WO2019098336A1 - Gas processing member - Google Patents

Gas processing member Download PDF

Info

Publication number
WO2019098336A1
WO2019098336A1 PCT/JP2018/042529 JP2018042529W WO2019098336A1 WO 2019098336 A1 WO2019098336 A1 WO 2019098336A1 JP 2018042529 W JP2018042529 W JP 2018042529W WO 2019098336 A1 WO2019098336 A1 WO 2019098336A1
Authority
WO
WIPO (PCT)
Prior art keywords
protective layer
gas processing
layer
gas
agent
Prior art date
Application number
PCT/JP2018/042529
Other languages
French (fr)
Japanese (ja)
Inventor
勇三 村木
嘉也 高山
知洋 中村
悠一 阿部
Original Assignee
日東電工株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日東電工株式会社 filed Critical 日東電工株式会社
Publication of WO2019098336A1 publication Critical patent/WO2019098336A1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B01J20/26—Synthetic macromolecular compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material

Definitions

  • the present invention relates to a gas processing member provided with a gas processing agent having hygroscopicity, hygroscopicity and the like.
  • Gas treatment components comprising a gas treatment agent are known.
  • the gas processing member include a moisture absorbing member and a moisture absorbing and releasing member provided with a gas treating agent (hygroscopic agent or moisture absorbing and desorbing agent) that absorbs moisture (water vapor) contained in the gas.
  • the moisture absorbent is a processing agent capable of re-releasing moisture absorbed under a wet atmosphere under specific conditions, for example, under a dry atmosphere. By satisfying the above specific condition, the hygroscopicity of the moisture absorbent is restored.
  • the moisture absorbing member and the moisture absorbing and releasing member are used by being attached to the inside of an electronic device such as a camera, a precision device, an electronic component or the like, for example. The attachment of the members can suppress, for example, the occurrence of dew condensation inside these products.
  • Patent Document 1 includes a treatment agent for removing at least one selected from predetermined gas components and fine particles, and a wall material for separating the treatment agent from the external atmosphere, and the wall material includes a fluorine resin film or a fluorine resin film.
  • a gas processing member having a gas permeable area formed of a laminate.
  • Patent Document 1 has a wall material of a fluorine resin film 102 and a support material 101 whose peripheral end portions are joined to each other in a superimposed state, and the wall material is formed by the wall material
  • Patent Document 1 discloses polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP) and the like as the material of the support material 101.
  • the gas processing member of Patent Document 1 is not necessarily suitable for miniaturization.
  • stress may be concentrated on a part of the joint depending on the distribution of the treatment agent 103 on the support material 101, and the joint reliability of the joint may be lowered. .
  • an object of the present invention is to provide a gas processing member suitable for miniaturization.
  • the present invention A substrate composed of a double-sided adhesive tape, a gas treating agent disposed on the substrate, and a breathable protective layer disposed on the substrate so as to cover the gas treating agent; Equipped
  • the protective layer has a joint portion bonded to the pressure-sensitive adhesive layer of the double-sided pressure-sensitive adhesive tape,
  • the invention provides Equipped with a housing
  • the gas processing agent is disposed on the pressure-sensitive adhesive layer of the double-sided pressure-sensitive adhesive tape.
  • positional deviation of the gas processing agent when bonding the protective layer and the base, and positional deviation of the gas processing agent during use are suppressed. Since positional deviation of the gas processing agent with respect to the base can be suppressed, it is easy to ensure the reliability of the joint even when the width of the joint between the protective layer and the base is reduced.
  • a protective layer is joined to the adhesive layer of the double-sided adhesive tape which is a base material.
  • the shrinkage of the protective layer at bonding can be avoided, which may occur in heat welding and bonding by adhesive. As a result, even when the size of the protective layer is reduced, it is easy to ensure the reliability of the joint.
  • the gas processing member of the present invention is suitable for downsizing.
  • FIG. 1A is a cross-sectional view schematically showing an example of the gas processing member of the present invention.
  • FIG. 1B is a plan view of the gas processing member shown in FIG. 1A as viewed from the protective layer side.
  • FIG. 2 is a cross-sectional view schematically showing another example of the gas processing member of the present invention.
  • FIG. 3 is a figure for demonstrating the moisture absorption / release member produced in the Example.
  • FIG. 4 is a cross-sectional view schematically showing an example of the device of the present invention. It is sectional drawing which shows typically an example of the conventional member for gas processing.
  • FIG. 1A and 1B An example of the gas processing member of this invention is shown to FIG. 1A and 1B.
  • the gas processing member 1 viewed from the side of the protective layer 4 is shown in FIG. 1B.
  • FIG. 1A shows a cross section II shown in FIG. 1B.
  • the gas processing member 1 covers a base 2, a gas processing layer 3 formed of a gas processing agent disposed on the base 2, and the gas processing layer 3. And a breathable protective layer 4 disposed on the substrate 2 as described above.
  • the base material 2 is comprised by the double-sided adhesive tape.
  • the protective layer 4 has a bonding portion 11 bonded to the pressure-sensitive adhesive layer of the substrate 2.
  • the gas treatment layer 3 is disposed in the space between the pressure-sensitive adhesive layer of the double-sided pressure-sensitive adhesive tape and the protective layer 4 in a region surrounded by the bonding portion 11.
  • the bonding portion 11 corresponds to the outer peripheral edge portion of the protective layer 4.
  • the substrate 2 is made of the double-sided adhesive tape, for example, even when the member 1 is attached to a surface (such as a vertical surface) inclined with respect to the horizontal direction, the distribution of the gas treatment agent on the substrate 2 The bias can be suppressed.
  • the distribution of the gas treatment agent is uneven in the miniaturized member 1 and the thickness of the gas treatment layer 3 becomes uneven, depending on the degree, the bond between the base 2 and the protective layer 4 may be broken, or the gas treatment agent May fall off.
  • the member 1 is suitable for suppressing positional deviation of the gas treatment agent and maintaining the reliability of the bonding.
  • the gas processing member 1 can be attached, for example, to the inside of an electronic device or the like. More specifically, with respect to the surface located inside the housing of the electronic device, for example, with respect to the inner surface of the housing of the electronic device and / or the surfaces of various components housed inside the housing. , Member 1 can be attached.
  • the pressure-sensitive adhesive layer of the substrate 2 (the pressure-sensitive adhesive layer on the side opposite to the side on which the gas treatment agent is disposed) can be used to attach the member 1.
  • the member 1 before attachment may have a separator which covers the said adhesive layer. A well-known separator can be used for a separator. The separator is peeled off when the member 1 is attached.
  • the shapes of the gas processing member 1 and the base 2 provided in the member 1, the gas processing agent (for example, the gas processing layer 3), and the protective layer 4 are not limited.
  • the positional deviation of the gas treatment agent when bonding the protective layer 4 and the base 2 and the positional deviation of the gas treatment agent during use are suppressed. Since the positional deviation of the gas processing agent with respect to the base material 2 can be suppressed, it is easy to ensure the reliability of the joint portion 11 even when the width of the joint portion 11 between the protective layer 4 and the base member 2 is reduced. . Therefore, the member 1 can have a shape in which bonding of the protective layer 4 and the base 2 is relatively difficult. Therefore, while being suitable for miniaturization, the freedom degree of the shape which member 1 can take is high.
  • the gas processing member of the present invention is for gas processing wherein a moisture absorbing and releasing layer is accommodated inside a bag-like body having air permeability and not having an adhesive layer.
  • a member moisture absorbing and desorbing member was produced as follows.
  • the prepared support layer is a thermally laminated product (120 ⁇ m in thickness, thickness direction) of a PTFE porous membrane (10 ⁇ m in thickness) and a nonwoven fabric (30 g / m 2 in basis weight) of composite fibers having a core / sheath structure of PET / PE.
  • Gurley permeability of 0.2 sec / 100 mL, tensile elongation for a tensile stress of 5 N / 10 mm was 2.0% in the MD direction and 4.8% in the TD direction).
  • a gas treating agent to be contained in the bag-like body it is a square moisture absorbing / desorbing layer having a size of 5 mm ⁇ 5 mm, which is a non-woven fabric of polyacrylate fibers (378 g / m 2 basis weight, 40 to 60% RH (relative A moisture absorbing and desorbing layer having a thickness of 0.8 mm under humidity) was prepared.
  • the moisture absorption and release layer has a moisture absorption rate of 100 based on the thickness of the moisture absorption state (moisture absorption rate of about 30 to 50%) under a general humidity atmosphere for producing the moisture absorption and release member. % Indicates an increase in thickness of about 30 to 40%.
  • the size in the length direction and the width direction does not substantially change even by the fluctuation of the moisture absorption rate.
  • a moisture absorbing and releasing layer was placed on one of the support layers.
  • the moisture absorbing and releasing layer was disposed so that the center of the support layer and the center of the moisture absorbing and releasing layer were aligned, and the side of the support layer and the side of the moisture absorbing and releasing layer were parallel to each other.
  • the other support layer was disposed to cover the moisture absorption / release layer, and both support layers were joined by heat welding at the outer peripheral edge to obtain a bag-like body including the moisture absorption / release layer.
  • the other support layer was arranged so that the outer peripheries of both support layers coincide with each other.
  • the width of the bonding portion of the support layer was 1.5 mm.
  • the distance between the end of the moisture absorption and release layer and the end of the support layer was 2.5 mm.
  • the above-mentioned bag-like body is disposed on the pressure-sensitive adhesive layer of a square double-sided pressure-sensitive adhesive tape (No. 5000 NS, 160 ⁇ m thick, manufactured by Nitto Denko) having a size of 10 mm ⁇ 10 mm, Was produced.
  • the bag-like body was disposed such that the outer periphery of the bag-like body and the outer periphery of the double-sided pressure-sensitive adhesive tape coincided.
  • the moisture absorption rate described later was 95% for the produced moisture absorption and release member, and peeling of the bonding portion (thermally welded portion of the support layer) at the time of moisture absorption was not observed.
  • the shapes of the gas treating member 1, the base 2, the gas treating layer 3 and the protective layer 4 (hereinafter referred to as members 1 and members) viewed from the direction perpendicular to the main surface of the substrate 2.
  • the shape of each layer constituting 1 is a shape as viewed from the direction perpendicular to the main surface of the base material 2) is a square.
  • the shapes of the member 1, the base 2, the gas treatment layer 3 and the protective layer 4 are not limited to the above example, and independently of each other, a circle (including an approximate circle), an ellipse (including an approximate ellipse), and a rectangle And a polygon including a square.
  • the area of the gas treatment layer 3 viewed from the direction perpendicular to the main surface of the substrate 2 (hereinafter, the area of the members 1 and the layers constituting the member 1 is the area viewed from the direction perpendicular to the main surface of the substrate 2 ) Is usually smaller than the area of the substrate 2.
  • the shape and / or area of the protective layer 4 may be identical to the shape and / or area of the substrate 2.
  • the shape and area of the member 1 may be identical to the shape and area of the substrate 2.
  • the area of the gas processing member 1 and / or the base 2 is, for example, 2500 mm 2 or less. Depending on the configuration of the member 1, the area may be 100 mm 2 or less, 50 mm 2 or less, 25 mm 2 or less, or 1 mm 2 or less. The lower limit of the area is not limited, and is, for example, 0.01 mm 2 or more.
  • the thickness of the gas processing member 1 is, for example, 5 mm or less.
  • the thickness of the member 1 may be 1 mm or less, 0.5 mm or less, or even 0.1 mm or less.
  • the lower limit of the thickness of the member 1 is not limited, and is, for example, 0.01 mm or more. When the thickness of the member 1 is in these ranges, for example, it becomes easy to attach to a miniaturized electronic device or the like with a limited internal volume.
  • the substrate 2 is constituted by a double-sided adhesive tape.
  • a known double-sided pressure-sensitive adhesive tape can be used for the substrate 2.
  • the double-sided pressure-sensitive adhesive tape may be a tape with a base material having a base material layer or a tape without a base material layer.
  • the base material layer of the tape with a base material is, for example, a film, a non-woven fabric, a foam (foam) or the like made of a polyolefin such as PET, PE and PP, or a resin such as cellulose ester.
  • the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer of the tape various pressure-sensitive adhesives such as an acrylic pressure-sensitive adhesive, a silicone-based pressure-sensitive adhesive, and a rubber-based pressure-sensitive adhesive can be used. If the base material layer of the double-sided pressure-sensitive adhesive tape is a relatively soft layer such as non-woven fabric or foam, or if the double-sided pressure-sensitive adhesive tape is a substrateless tape, even when the gas treatment agent expands when using the member 1 The bonding with the protective layer 4 can be maintained more reliably.
  • the thickness of the substrate 2 is, for example, 0.005 to 5 mm.
  • the thickness of the substrate 2 may be 0.01 to 1 mm, and further 0.05 to 0.5 mm.
  • the thickness of the member 1 can be reduced while maintaining the strength, rigidity, etc. desired for the gas processing member 1.
  • the reduction of the thickness of the member 1 facilitates, for example, attachment to a miniaturized electronic device or the like with a limited internal volume.
  • the attachment property of the member 1 is securable.
  • the gas treatment agent is, for example, an absorbent that absorbs a substance contained in a gas (typically, air) that has permeated the protective layer 4 and / or a release agent that releases the substance into the gas.
  • a gas typically, air
  • the absorption of the substance may be chemical absorption or physical absorption.
  • the gas treatment agent may have the function of absorbing the substance contained in the gas and the function of re-releasing the absorbed substance into the gas under specific conditions.
  • the gas treatment agent is, for example, a hygroscopic agent that absorbs moisture (water vapor) contained in the gas; a hygroscopic agent that absorbs moisture contained in the gas and re-releases the absorbed moisture under specific conditions; Deodorizing agent that absorbs odorous substances; and adsorbents that absorb acid, alkali, corrosive gas, etc. contained in gas.
  • the gas treatment layer 3 may contain a hygroscopic agent or a hygroscopic agent.
  • the gas treating agent is not limited to the above example.
  • the gas treating agent may have a single function for the treatment of gas or multiple functions for the treatment of gas.
  • the gas treating agent may have a moisture absorbing and releasing function and a deodorizing function.
  • the gas treatment layer 3 may be composed of a single gas treatment agent or may be composed of two or more gas treatment agents. Further, the gas processing layer 3 may have a single layer structure or a laminated structure of two or more layers. In the gas treatment layer 3 composed of two or more gas treatment agents, each material can have different functions related to gas treatment. In the gas treatment layer 3 having a laminated structure of two or more layers, each layer can have different functions related to the treatment of gas.
  • the gas treatment layer 3 may contain any layer and / or material as long as the effects of the present invention can be obtained.
  • inorganic hygroscopic (moisture-desorption / moisture) agents such as silica gel, zeolite, clay, quick lime, and metal compounds such as calcium chloride, calcium carbonate, and magnesium chloride;
  • Organic hygroscopic materials such as acrylic fibers having moisture release property, fibers of organic polymers such as polyolefins or polyesters into which hydrophilic groups (such as carboxyl groups, sulfonic groups, quaternary ammonium groups, or salts thereof) are introduced by graft polymerization.
  • Dehumidifying agent such as silica gel, zeolite, clay, quick lime, and metal compounds such as calcium chloride, calcium carbonate, and magnesium chloride
  • organic hygroscopic materials such as acrylic fibers having moisture release property, fibers of organic polymers such as polyolefins or polyesters into which hydrophilic groups (such as carboxyl groups, sulfonic groups, quaternary ammonium groups, or salts thereof) are introduced
  • gas processing layer 3 which is a hygroscopic layer or moisture absorption and release layer
  • a publicly known hygroscopic agent and / or a hygroscopic agent can be adopted.
  • the deodorizing agent is, for example, silica gel, activated carbon, zeolite or the like. It is not restricted to the said example as a material which comprises the gas processing layer 3 which is a deodorizing layer, A well-known deodorizing agent is employable. These materials may be impregnated into a non-woven fabric, or may be used by being kneaded into a binder.
  • the gas processing agent which is a moisture absorbing and releasing agent may include an acrylic fiber having moisture absorbing and releasing properties.
  • An acrylic fiber having moisture absorption and release properties has a high amount of saturated moisture absorption per weight and is excellent in moisture absorption performance. Also, dehumidification proceeds easily and efficiently simply by placing in a dry atmosphere. For this reason, when the gas processing agent contains an acrylic fiber having moisture absorption and release properties, a gas processing member 1 exhibiting high moisture absorption and release performance while being miniaturized can be obtained.
  • Acrylic fiber is a fiber comprised from the acrylic resin which has a (meth) acrylic acid ester unit as a structural unit.
  • acrylic fibers having moisture absorption and release properties such as polyacrylate fibers such as crosslinked polyacrylic acid sodium salt fibers, and acrylic fibers having a surface subjected to hydrolysis treatment.
  • the gas treatment agent for example, the gas treatment layer 3 containing acrylic fiber having moisture absorption and release properties may include a processed layer of the fiber such as woven fabric or non-woven fabric, or may be processed of the fiber such as woven fabric or non-woven fabric It may be composed of layers.
  • the gas treatment agent may be a treatment agent that expands due to absorption of a substance that has permeated from the outside through the protective layer 4 in the space where the gas treatment agent is disposed.
  • positional deviation of the gas processing agent when bonding the protective layer 4 and the base 2 and positional deviation of the gas processing agent during use are suppressed. Since positional deviation of the gas processing agent with respect to the base material 2 can be suppressed, it is easy to ensure the reliability of the joint part 11 even when the width of the joint part between the protective layer 4 and the base material 2 is reduced.
  • the expanding gas treatment agent includes, for example, an acrylic fiber having moisture absorption and release properties.
  • the protective layer 4 is a layer having breathability.
  • the air permeability of the protective layer 4 may be such that the substance to be treated by the gas treatment agent can pass through the space where the gas treatment agent is disposed from the outside.
  • the processing speed of the substance in the gas processing member 1 can be controlled, for example, by the air permeability of the protective layer 4.
  • the material which constitutes the protective layer 4 is, for example, polyolefin such as PE and PP; polyester such as PET; polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVdF), and polyamide.
  • polyolefin such as PE and PP
  • polyester such as PET
  • PTFE polytetrafluoroethylene
  • PVdF polyvinylidene fluoride
  • polyamide polyamide
  • the form of the protective layer 4 is not limited, and is, for example, a breathable film, a woven fabric, a non-woven fabric, a mesh, or a porous membrane.
  • the average pore diameter or opening of the protective layer 4 is preferably smaller than the average particle diameter, average fiber diameter, etc. of the gas treatment agent. In this case, it is possible to suppress scattering of powder, particles, dust, fine fibers and the like derived from the gas processing agent into the space where the gas processing member 1 is attached.
  • the average pore size or opening of the protective layer 4 may be, for example, 1 mm or less, 0.01 mm or less, or 0.001 mm or less.
  • the lower limit of the average pore diameter or opening of the protective layer 4 is, for example, 0.001 ⁇ m or more.
  • the protective layer 4 may include a porous film (PTFE porous film) formed by stretching and calcining a paste extrudate or a cast film containing PTFE particles.
  • the protective layer 4 may be a layer made of a PTFE porous membrane or may have a laminated structure of a PTFE porous membrane and another air-permeable layer.
  • Other breathable layers may be breathable films, woven fabrics, non-woven fabrics, meshes, porous membranes and the like.
  • the protective layer 4 including the PTFE porous membrane has high air permeability and high performance to prevent the permeation of substances other than gas. For this reason, for example, scattering of powder, particles, dust, fine fibers and the like derived from the gas processing agent can be suppressed in the space where the gas processing member 1 is attached. In addition, for example, even when a water layer is generated on the surface of the gas treatment agent due to moisture absorption, scattering of water droplets into the space where the member 1 is attached can be suppressed. Furthermore, the porous PTFE membrane has very low scattering properties (dusting properties) of the material constituting itself as compared with non-woven fabrics and the like.
  • the protective layer 4 preferably contains a PTFE porous membrane.
  • the protective layer 4 is preferably excellent in elongation characteristics.
  • the protective layer 4 may be a layer exhibiting a tensile elongation of 5% or more in the direction with respect to a tensile stress of 5 N / 10 mm applied in at least one in-plane direction.
  • the tensile elongation may be 6% or more, 20% or more, and further 100% or more.
  • the protective layer 4 exhibiting a tensile elongation in the above range is excellent in elongation characteristics and is flexible.
  • the gas processing agent is the above-mentioned expanding processing agent, it is possible to stretch itself in accordance with the expansion of the gas processing agent, so that the reliability of the bonding portion 11 between the protective layer 4 and the substrate 2 is more reliable. Can be secured. Moreover, the performance fall of the process layer 3 which may arise because expansion
  • the protective layer 4 including the porous PTFE membrane, particularly, the protective layer 4 made of the porous PTFE membrane can exhibit the tensile elongation in the above range.
  • the protective layer 4 may be treated to be liquid repellent.
  • the liquid repellent treatment can be carried out based on a known method.
  • the air permeability of the protective layer 4 was measured using the air permeability measurement method B (Gurley type method) defined in Japanese Industrial Standard (JIS) L1096 (Gurley air permeability) And may be, for example, 500 seconds / 100 mL or less, 50 seconds / 100 mL or less, and further 1 second / 100 mL or less.
  • JIS Japanese Industrial Standard
  • An example of the measuring jig is a polycarbonate disc having a thickness of 2 mm and a diameter of 47 mm, in which a through hole (having a circular cross section with a diameter of 1 mm or 2 mm) is provided at the center.
  • Gurley air permeability using this measurement jig can be carried out as follows.
  • the protective layer to be evaluated is fixed to one surface of the measurement jig so as to cover the opening of the through hole.
  • air passes only through the opening and the effective test part of the protective layer to be evaluated (the part overlapping the opening when viewed from the direction perpendicular to the main surface of the fixed protective layer), And the fixed part should not block the passage of air in the effective test part of the protective layer.
  • the protective layer it is possible to use a double-sided adhesive tape in which a vent having a shape corresponding to the shape of the opening is punched at the center.
  • the double-sided adhesive tape may be disposed between the measuring jig and the protective layer so that the circumference of the vent and the circumference of the opening coincide.
  • the measurement jig to which the protective layer is fixed is set in the Gurley air permeability tester so that the fixed surface of the protective layer is on the downstream side of the air flow at the time of measurement, and the Gurley air permeability is measured.
  • the configuration of the protective layer 4 is not limited to the above example as long as it has air permeability.
  • the gas processing member 1 can be provided with any layer and / or member other than those described above as long as the effects of the present invention can be obtained.
  • the gas processing agent for example, the gas processing layer 3
  • the base material 2 which is a double-sided adhesive tape
  • the protective layer 4 is disposed to cover the gas processing agent.
  • the protective layer 4 can be formed by bonding the pressure-sensitive adhesive layer of the substrate 2 such that 11 surrounds the gas treatment agent.
  • the hygroscopicity of the hygroscopic agent and the hygroscopic agent which are one of the gas treatment agents can be evaluated by the hygroscopicity.
  • the moisture absorption rate can be evaluated by the amount of moisture in the gas absorbed by the moisture absorbent or the moisture absorbent when the dried moisture absorbent or the moisture absorbent is placed in a wet atmosphere for a predetermined time. Specifically, the moisture absorption rate is the weight (weight at the time of drying) W1 (g) of the moisture absorbing agent or the moisture absorbing and releasing agent dried by leaving it to stand in the drier at a set temperature of 80 ° C.
  • Moisture absorption rate (%) (W2-W1) / W1 ⁇ 100
  • the moisture absorption rate of the moisture absorbing agent and the moisture absorbing and releasing agent is, for example, 80% or more, and may be 85% or more, 90% or more, and further 95% or more.
  • the gas processing member 1 can be supplied, for example, in the form of being disposed on a sheet-like base film, or disposed on a strip-like base film and wound in a roll or a reel.
  • the pressure-sensitive adhesive layer of the substrate 2 can be used to arrange the gas processing member 1 on the base film.
  • a release layer may be formed on the surface of the base film on which the gas processing member 1 is disposed, to facilitate the release of the member 1 from the base film.
  • the base film for example, a polymer film, paper, a metal film, a composite film of these, and the like can be used.
  • the gas treatment member 1 can be attached to any space.
  • the gas processing member 1 can be used by being attached to the inside of various devices such as an electronic device and an optical device.
  • the optical device may be one that does not have an electronic circuit, that is, one that is not an electronic device.
  • Electronic devices include precision devices, electronic components and the like.
  • the member 1 is, for example, a surface located inside the housing of these devices, and more specifically, the inner surface of the housing and / or a surface of various components housed inside the housing. It can be attached.
  • the pressure-sensitive adhesive layer of the substrate 2 (the pressure-sensitive adhesive layer on the side opposite to the side on which the gas treatment agent is disposed) can be used to attach the member 1.
  • the apparatus to which the gas processing member 1 can be attached is not limited to the above example.
  • the gas processing member 1 which is a moisture absorbing member or a moisture absorbing and releasing member is attached, for example, the occurrence of dew condensation in the attached space and / or the surface facing the space can be suppressed.
  • the gas processing member 1 be attached to a portion of the inside of the housing that should prevent condensation.
  • the site to prevent condensation is, for example, an optical member having an optical function of refracting, reflecting or transmitting light, in particular, the surface thereof.
  • the condensation on the optical member and its surface may impair the function and / or the performance of the device comprising the optical member.
  • the optical member examples include a lens, a refractive member such as a prism, a mirror, a reflective member such as a half mirror, an optical filter, a light transmissive window, a transmissive member such as a light transmissive protective film, a light guide member such as a light guide sheet, It is a light emitting member such as a retardation film, an interference member such as a light interference sheet, a light emitting diode (LED), a liquid crystal element and a display (LCD), an organic electroluminescence (OEL) element and a display (OLED).
  • the optical member is not limited to the above example.
  • the attachment of the optical member and the member 1 to the surface thereof may impair the function and / or performance of the optical member.
  • the member 1 may be attached in the vicinity of the portion of the inside of the housing where condensation should be prevented.
  • the member 1 may be attached at or near the site where condensation should be prevented inside the housing.
  • proximate means a position at an interval of, for example, 10 mm or less, preferably 5 mm or less, more preferably 1 mm or less, with respect to the target portion. The spacing may be 0 (zero) mm.
  • the portion to be prevented from dew condensation may be an electronic component such as a circuit board, or may be a portion (condensed portion) where condensation can occur inside the housing.
  • the portion to be subjected to dew condensation is typically a portion of the housing where the temperature change due to the fluctuation of the outside air temperature is large and the relative humidity of the facing space is likely to rise.
  • a specific example of the dew condensation target is an inner surface of a lens barrel of a camera lens, a thin wall portion of a housing, and a portion made of metal in the housing.
  • Being a portion subjected to condensation means, for example, that a device left for a predetermined time (for example, 6 hours) or more in a first atmosphere kept at a predetermined temperature and relative humidity (for example, 25.degree.
  • FIG. 4 shows a camera 31 which is a type of electronic device and optical device.
  • the camera 31 includes a body 32 and a camera lens 33.
  • the imaging device 35, the circuit board 36, the external monitor 37, and the electronic finder 38 are accommodated in the housing 43 of the body 32.
  • the housing 43 is provided with an opening 34 for guiding the light 45 transmitted through the camera lens 33 to the imaging device 35 and a finder window 39 for guiding the light 46 from the electronic finder 38 to the outside.
  • a portion in which the tiltable external monitor 37 is accommodated is a thin portion whose thickness is reduced as compared with other portions.
  • Lenses 40, 41 and 42 are fixed to a housing 44 of the camera lens 33.
  • At least one selected from the gas processing members 1A to 1I is accommodated inside the camera 31, more specifically, inside the housing of the camera 31 (body 32 and / or camera lens 33).
  • the at least one gas treatment member is the gas treatment member 1 of the present invention, and typically, the pressure-sensitive adhesive layer of the substrate 2 provided in the member (a gas treatment agent in the double-sided pressure-sensitive adhesive tape is disposed It is attached to the surface located inside housing 43 and / or housing 44 by the adhesive layer on the surface opposite to the side surface.
  • the position at which the gas processing member 1 is attached to the camera 31 is at or near a portion of the housing 43 and / or the housing 44 in which condensation is to be prevented.
  • the position is near the surface on the housing 44 side of the lens 40, near the surface on the housing 44 side of the lens 42, near the imaging device 35, near the circuit board 36, thin in the housing 43 It is the vicinity of the surface of the unit, the surface on the case 43 side of the finder window 39.
  • the device of the present invention is not limited to the example shown in FIG. An example of the device of the present invention and a portion of the device to prevent condensation is as described above.
  • Moisture absorption rate The moisture absorption performance of the produced moisture absorption and release member was evaluated by the moisture absorption rate of the moisture absorption and release layer with which the said member is equipped inside.
  • the evaluation method is as follows.
  • the moisture absorbing and desorbing layer incorporated in the moisture absorbing and desorbing member was allowed to stand in a drier (set temperature 80 ° C. or more) for 1 hour or more for drying, and the dry weight W1 (g) was measured.
  • a moisture absorbing / releasing member is manufactured using the moisture absorbing / releasing layer, and the manufactured moisture absorbing / releasing member is left in the dryer for 1 hour or more to dry, and the dry weight W3 (g) of the member is determined. It was measured.
  • the moisture absorbing / releasing member after drying was allowed to stand in a humidified atmosphere of 35 ° C.
  • Moisture absorption rate (%) (W4-W3) / W1 ⁇ 100
  • the tensile elongation to a tensile stress of 5 N / 10 mm was measured by a tensile test for the protective layer used for producing the moisture absorbent / desorbent member.
  • the tensile test was carried out using an autograph AG-1 manufactured by Shimadzu Corporation at a distance between chucks of 20 mm, a tensile speed of 200 mm / min, and a test temperature of 25 ° C.
  • the sample shape was a strip having a width of 10 mm and a length of 100 mm. The test was performed in any direction, with the MD direction or the TD direction of the PTFE porous membrane included in the protective layer as the tensile direction (the direction of the length of the sample).
  • Example 1 A square double-sided pressure-sensitive adhesive tape (manufactured by Nitto Denko, No. 5000 NS, 160 ⁇ m thick) having a size of 10 mm ⁇ 10 mm was prepared as a substrate. Moreover, the square protective layer (120 micrometers in thickness) which has a size of 10 mm x 10 mm was prepared. The prepared protective layer had a laminated structure by thermal lamination of a PTFE porous membrane (10 ⁇ m in thickness) and a nonwoven fabric of a composite fiber having a PET / PE core-sheath structure (30 g / m 2 in basis weight). The breathability of the protective layer was 0.2 seconds / 100 mL as expressed by Gurley permeability. The tensile elongation of the protective layer to a tensile stress of 5 N / 10 mm was 2.0% in the MD direction and 4.8% in the TD direction.
  • This moisture absorbing and releasing layer has a thickness when it is in a hygroscopic state (moisture absorbing state of about 30 to 50% of hygroscopicity) under 40 to 60% RH which is a general humidity atmosphere for producing a moisturizing and releasing member.
  • the 100% moisture absorption shows an increase in thickness of about 30 to 40% based on the following.
  • the size in the length direction and the width direction does not substantially change even by the fluctuation of the moisture absorption rate.
  • a moisture absorbing and releasing layer was disposed on the pressure-sensitive adhesive layer of the substrate.
  • the moisture absorbing and releasing layer was arranged so that the center of the substrate and the center of the moisture absorbing and releasing layer were aligned, and the side of the substrate and the side of the moisture absorbing and releasing layer were parallel to each other (see FIG. 3).
  • a protective layer was disposed so as to cover the moisture absorbing and releasing layer, and the pressure sensitive adhesive layer of the base material and the protective layer were joined at the outer peripheral edge of the protective layer to prepare a moisture absorbing and releasing member.
  • the protective layer was disposed such that the outer periphery of the substrate and the outer periphery of the protective layer coincided.
  • the width L1 of the bonding portion 22 between the base and the protective layer was 1.5 mm.
  • the distance L2 between the end 24 of the moisture absorbing and releasing layer and the end 23 of the substrate and the protective layer was 2.5 mm.
  • the moisture absorption rate of the produced moisture absorption and release member was 98%, and no peeling of the joint at the time of moisture absorption was observed.
  • Example 2 Example 1 and Example 1 except that the size of the substrate and the protective layer was changed to 7 mm ⁇ 7 mm, and the protective layer was changed to a single-layer PTFE porous membrane (80 ⁇ m thick, Gurley air permeability 1.0 second / 100 mL). In the same manner, a moisture absorbing and releasing member was produced.
  • the tensile elongation of the protective layer against a tensile stress of 5 N / 10 mm was 17.3% in the MD direction of the porous PTFE membrane and 25.0% or more in the TD direction.
  • the width L1 of the bonding portion 22 between the base and the protective layer was 0.8 mm.
  • the distance L2 between the end 24 of the moisture absorbing and releasing layer and the end 23 of the substrate and the protective layer was 1.0 mm.
  • the moisture absorption rate of the produced moisture absorption and release member was 95%, and peeling of the joint at the time of moisture absorption was not observed.
  • Example 3 A moisture absorbing and desorbing member was produced in the same manner as in Example 2 except that the protective layer was changed to another single-layer PTFE porous membrane (thickness 80 ⁇ m, Gurley air permeability 3.0 seconds / 100 mL). The tensile elongation of the protective layer against a tensile stress of 5 N / 10 mm was 7.5% in the MD direction of the PTFE porous membrane and 25.0% or more in the TD direction. The moisture absorption rate of the produced moisture absorption and release member was 96%, and no peeling of the joint at the time of moisture absorption was observed.
  • Example 4 The size and shape of the substrate and protective layer are changed to a 6 mm ⁇ 22 mm rectangle, and the size and shape of the moisture absorbing and releasing layer are changed to a 4 mm ⁇ 20 mm rectangle, and a single-layer PTFE porous membrane (80 ⁇ m thick, A moisture absorbing and releasing member was produced in the same manner as in Example 1 except that the protective layer was changed to a Gurley air permeability of 1.0 sec / 100 mL). The tensile elongation of the protective layer against a tensile stress of 5 N / 10 mm was 17.3% in the MD direction of the porous PTFE membrane and 25.0% or more in the TD direction.
  • the width L1 of the bonding portion 22 between the base and the protective layer was 0.8 mm.
  • the distance L2 between the end 24 of the moisture absorbing and releasing layer and the end 23 of the substrate and the protective layer was 1.0 mm.
  • the moisture absorption rate of the produced moisture absorption and release member was 95%, and peeling of the joint at the time of moisture absorption was not observed. Two moisture absorbing and releasing members were produced.
  • a bottomed cylindrical glass container (glass sample bottle, about 32 mm in diameter, about 65 mm in height) having an inner volume of 50 mL was prepared, and the side of the container was thermally insulated by the application of a heat insulating film.
  • a heat insulation film use a laminate of double-sided adhesive tape (No. 57115B manufactured by Nitto Denko, thickness 0.15 mm, PE foam base layer) and PET film (Lumirror manufactured by Toray Industries, thickness 100 ⁇ m), The above-mentioned heat insulation film was stuck on the whole side (outside side) of a container using the adhesive layer of a double-sided adhesive tape. In addition, sticking of the heat insulation film was not implemented with respect to the bottom face of the said container.
  • each long side direction would be the circumferential direction of the container and so as not to overlap each other.
  • the adhesive layer of the substrate was used for attachment.
  • the container was left without a lid (made of PE) in an environment of 25 ° C. and 60% RH for 6 hours or more, and the container was moved to an environment of ⁇ 15 ° C. immediately after closing the lid. It was visually confirmed whether condensation had formed on the bottom of the container when 5 minutes had elapsed from the movement, but no condensation had occurred.
  • One of the long side of each of the two moisture absorbing and desorbing members manufactured above is located at a distance of about 0.2 mm from the opening with respect to the side surface (inner side surface) near the opening in the container, and It was attached so that the side direction would be the circumferential direction of the container and not overlap each other.
  • the adhesive layer of the substrate was used for attachment.
  • the container was left without a lid (made of PE) in an environment of 25 ° C. and 60% RH for 6 hours or more, and the container was moved to an environment of ⁇ 15 ° C. immediately after closing the lid. It was visually confirmed whether condensation had occurred on the bottom of the container when 5 minutes had passed from the movement, and it was found that condensation had occurred on the bottom.
  • the gas processing member of the present invention can be attached to, for example, the inside of an electronic device, a precision device, an electronic component or the like, and used for gas processing of the space in the inside.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Laminated Bodies (AREA)
  • Lens Barrels (AREA)
  • Camera Bodies And Camera Details Or Accessories (AREA)
  • Drying Of Gases (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

This gas processing member is provided with: a substrate formed from a double-sided adhesive tape; a gas processing agent which is provided on the substrate; and a protective layer which is air permeable, and which is provided on the substrate so as to cover the gas processing agent. The protective layer is provided with a joined portion which is joined to an adhesive layer of the double-sided adhesive tape. The gas processing agent is provided in a space between the protective layer and the adhesive layer of the double-sided adhesive tape in a region surrounded by the joined portion. This gas processing member is suitable for downsizing.

Description

気体処理用部材Gas treatment member
　本発明は、吸湿性、吸放湿性等を有する気体処理剤を備える気体処理用部材に関する。 The present invention relates to a gas processing member provided with a gas processing agent having hygroscopicity, hygroscopicity and the like.
　気体処理剤を備える気体処理用部材が知られている。気体処理用部材の一例に、気体に含まれる水分（水蒸気）を吸収する気体処理剤（吸湿剤又は吸放湿剤）を備える吸湿部材及び吸放湿部材がある。なお、吸放湿剤は、湿潤雰囲気下で吸収した水分を特定の条件下、例えば乾燥雰囲気下、において再放出可能な処理剤である。上記特定の条件が満たされることで、吸放湿剤の吸湿性が回復する。吸湿部材及び吸放湿部材は、例えば、カメラ等の電子機器、精密機器、電子部品等の内部に取り付けられて使用される。当該部材の取り付けにより、例えば、これらの製品の内部に結露が生じることを抑制できる。 Gas treatment components comprising a gas treatment agent are known. Examples of the gas processing member include a moisture absorbing member and a moisture absorbing and releasing member provided with a gas treating agent (hygroscopic agent or moisture absorbing and desorbing agent) that absorbs moisture (water vapor) contained in the gas. The moisture absorbent is a processing agent capable of re-releasing moisture absorbed under a wet atmosphere under specific conditions, for example, under a dry atmosphere. By satisfying the above specific condition, the hygroscopicity of the moisture absorbent is restored. The moisture absorbing member and the moisture absorbing and releasing member are used by being attached to the inside of an electronic device such as a camera, a precision device, an electronic component or the like, for example. The attachment of the members can suppress, for example, the occurrence of dew condensation inside these products.
　特許文献１には、所定の気体成分及び微粒子から選ばれる少なくとも一方を除去する処理剤と、処理剤と外部雰囲気とを隔てる壁材とを含み、壁材がフッ素樹脂フィルム又はフッ素樹脂フィルムを含む積層体からなる気体透過領域を有する気体処理用部材が開示されている。また、図５に示すように、特許文献１には、重ね合わせた状態で周端部が互いに接合されたフッ素樹脂フィルム１０２及び支持材１０１の壁材を有し、当該壁材により形成された袋状の容器内に処理剤１０３が内包された形態が記載されている。特許文献１には、支持材１０１の材料として、ポリエチレンテレフタレート（ＰＥＴ）、ポリエチレン（ＰＥ）、ポリプロピレン（ＰＰ）等が開示されている。 Patent Document 1 includes a treatment agent for removing at least one selected from predetermined gas components and fine particles, and a wall material for separating the treatment agent from the external atmosphere, and the wall material includes a fluorine resin film or a fluorine resin film. Disclosed is a gas processing member having a gas permeable area formed of a laminate. In addition, as shown in FIG. 5, Patent Document 1 has a wall material of a fluorine resin film 102 and a support material 101 whose peripheral end portions are joined to each other in a superimposed state, and the wall material is formed by the wall material An embodiment in which the treatment agent 103 is contained in a bag-like container is described. Patent Document 1 discloses polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP) and the like as the material of the support material 101.
特開２００１－１９８４２９号公報JP 2001-198429 A
　近年、気体処理用部材を取り付ける製品の小型化が進んでいる。小型化された製品に対応するために、気体処理用部材にも小型化が求められる状況にある。しかし、特許文献１の気体処理用部材は、必ずしも小型化に適していない。気体処理用部材の小型化のためには、当該部材の厚さ及び／又は大きさ（サイズ）を小さくする必要がある。しかし、気体処理用部材を取り付けるために必要な粘着剤を、面積が小さい支持材１０１の露出面に対して薄く均一に塗布することは容易ではない。また、サイズを小さくするには、フッ素樹脂フィルム１０２と支持材１０１との接合部の幅を小さくすることが望まれる。しかし、接合部の幅を小さくすると、支持材１０１上の処理剤１０３の分布の偏りによっては、接合部の一部に応力が集中するため、接合部の接合の信頼性が低下する場合がある。 In recent years, miniaturization of products to which a gas processing member is attached is in progress. In order to cope with the miniaturized products, the gas processing members are also required to be miniaturized. However, the gas processing member of Patent Document 1 is not necessarily suitable for miniaturization. In order to miniaturize the gas processing member, it is necessary to reduce the thickness and / or the size (size) of the member. However, it is not easy to thinly and uniformly apply the adhesive necessary for attaching the gas processing member to the exposed surface of the support member 101 having a small area. Moreover, in order to reduce the size, it is desirable to reduce the width of the bonding portion between the fluorine resin film 102 and the support material 101. However, if the width of the joint is reduced, stress may be concentrated on a part of the joint depending on the distribution of the treatment agent 103 on the support material 101, and the joint reliability of the joint may be lowered. .
　以上の事項に鑑み、本発明は、小型化に適した気体処理用部材を提供することを目的とする。 In view of the above-mentioned matters, an object of the present invention is to provide a gas processing member suitable for miniaturization.
　本発明は、
　両面粘着テープから構成される基材と、前記基材上に配置された気体処理剤と、前記気体処理剤を覆うように前記基材上に配置された、通気性を有する保護層と、を備え、
　前記保護層は、前記両面粘着テープの粘着剤層に接合された接合部を有し、
　前記気体処理剤は、前記接合部に囲まれた領域における前記両面粘着テープの前記粘着剤層と前記保護層との間の空間に配置されている、気体処理用部材、
　を提供する。 The present invention
A substrate composed of a double-sided adhesive tape, a gas treating agent disposed on the substrate, and a breathable protective layer disposed on the substrate so as to cover the gas treating agent; Equipped
The protective layer has a joint portion bonded to the pressure-sensitive adhesive layer of the double-sided pressure-sensitive adhesive tape,
The gas treating member, wherein the gas treating agent is disposed in a space between the pressure-sensitive adhesive layer and the protective layer of the double-sided pressure-sensitive adhesive tape in a region surrounded by the bonding portion.
I will provide a.
　別の側面によれば、本発明は、
　筐体を備え、
　上記本発明の気体処理用部材が前記筐体の内部に収容された機器、
　を提供する。 According to another aspect, the invention provides
Equipped with a housing
An apparatus in which the gas processing member of the present invention is accommodated in the housing,
I will provide a.
　本発明の気体処理用部材では、両面粘着テープの粘着剤層上に気体処理剤が配置されている。これにより、保護層と基材とを接合する際の気体処理剤の位置ずれや、使用中における気体処理剤の位置ずれが抑制される。基材に対する気体処理剤の位置ずれを抑制できるため、保護層と基材との接合部の幅を小さくした場合においても、接合部の信頼性を確保することが容易となる。 In the gas processing member of the present invention, the gas processing agent is disposed on the pressure-sensitive adhesive layer of the double-sided pressure-sensitive adhesive tape. Thereby, positional deviation of the gas processing agent when bonding the protective layer and the base, and positional deviation of the gas processing agent during use are suppressed. Since positional deviation of the gas processing agent with respect to the base can be suppressed, it is easy to ensure the reliability of the joint even when the width of the joint between the protective layer and the base is reduced.
　また、本発明の気体処理用部材では、基材である両面粘着テープの粘着剤層に保護層が接合されている。当該接合では、熱溶着及び接着剤による接合において生じることがある、接合時における保護層の収縮を回避できる。これにより、保護層のサイズを小さくした場合においても、接合部の信頼性を確保することが容易となる。 Moreover, in the member for gas processing of this invention, a protective layer is joined to the adhesive layer of the double-sided adhesive tape which is a base material. In the bonding, the shrinkage of the protective layer at bonding can be avoided, which may occur in heat welding and bonding by adhesive. As a result, even when the size of the protective layer is reduced, it is easy to ensure the reliability of the joint.
　したがって、本発明の気体処理用部材は小型化に適している。 Therefore, the gas processing member of the present invention is suitable for downsizing.
図１Ａは、本発明の気体処理用部材の一例を模式的に示す断面図である。FIG. 1A is a cross-sectional view schematically showing an example of the gas processing member of the present invention. 図１Ｂは、図１Ａに示す気体処理用部材を保護層の側から見た平面図である。FIG. 1B is a plan view of the gas processing member shown in FIG. 1A as viewed from the protective layer side. 図２は、本発明の気体処理用部材の別の一例を模式的に示す断面図である。FIG. 2 is a cross-sectional view schematically showing another example of the gas processing member of the present invention. 図３は、実施例において作製した吸放湿部材を説明するための図である。FIG. 3 is a figure for demonstrating the moisture absorption / release member produced in the Example. 図４は、本発明の機器の一例を模式的に示す断面図である。FIG. 4 is a cross-sectional view schematically showing an example of the device of the present invention. 従来の気体処理用部材の一例を模式的に示す断面図である。It is sectional drawing which shows typically an example of the conventional member for gas processing.
　以下、本発明の実施形態について、図面を参照しながら説明する。本発明は、以下の実施形態に限定されない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the following embodiments.
　［気体処理用部材］
　図１Ａ及び図１Ｂに、本発明の気体処理用部材の一例を示す。図１Ｂには、保護層４の側から見た気体処理用部材１が示されている。図１Ａには、図１Ｂに示す断面Ｉ－Ｉが示されている。 [Member for gas treatment]
An example of the gas processing member of this invention is shown to FIG. 1A and 1B. The gas processing member 1 viewed from the side of the protective layer 4 is shown in FIG. 1B. FIG. 1A shows a cross section II shown in FIG. 1B.
　図１Ａ及び図１Ｂに示すように、気体処理用部材１は、基材２と、基材２上に配置された、気体処理剤により形成された気体処理層３と、気体処理層３を覆うように基材２上に配置された、通気性を有する保護層４とを備える。基材２は、両面粘着テープにより構成されている。保護層４は、基材２の粘着剤層に接合された接合部１１を有する。気体処理層３は、接合部１１に囲まれた領域における両面粘着テープの粘着剤層と保護層４との間の空間に配置されている。図１Ａ及び図１Ｂに示す例において、接合部１１は保護層４の外周縁部に対応する。 As shown in FIGS. 1A and 1B, the gas processing member 1 covers a base 2, a gas processing layer 3 formed of a gas processing agent disposed on the base 2, and the gas processing layer 3. And a breathable protective layer 4 disposed on the substrate 2 as described above. The base material 2 is comprised by the double-sided adhesive tape. The protective layer 4 has a bonding portion 11 bonded to the pressure-sensitive adhesive layer of the substrate 2. The gas treatment layer 3 is disposed in the space between the pressure-sensitive adhesive layer of the double-sided pressure-sensitive adhesive tape and the protective layer 4 in a region surrounded by the bonding portion 11. In the example shown in FIGS. 1A and 1B, the bonding portion 11 corresponds to the outer peripheral edge portion of the protective layer 4.
　両面粘着テープにより基材２が構成されるため、例えば、水平方向に対して傾いた面（垂直面等）に部材１を取り付けたときにも、基材２上での気体処理剤の分布の偏りを抑制できる。小型化された部材１において気体処理剤の分布が偏って気体処理層３の厚さが不均一になると、その程度によっては、基材２と保護層４との接合が破れたり、気体処理剤が脱落することも考えられる。部材１は、気体処理剤の位置ずれを抑制し、上記接合の信頼性を維持することに適している。 Since the substrate 2 is made of the double-sided adhesive tape, for example, even when the member 1 is attached to a surface (such as a vertical surface) inclined with respect to the horizontal direction, the distribution of the gas treatment agent on the substrate 2 The bias can be suppressed. When the distribution of the gas treatment agent is uneven in the miniaturized member 1 and the thickness of the gas treatment layer 3 becomes uneven, depending on the degree, the bond between the base 2 and the protective layer 4 may be broken, or the gas treatment agent May fall off. The member 1 is suitable for suppressing positional deviation of the gas treatment agent and maintaining the reliability of the bonding.
　気体処理用部材１は、例えば、電子機器等の内部に取り付けることができる。より具体的には、電子機器の筐体の内部に位置する表面に対して、例えば、電子機器の筐体の内面及び／又は筐体の内部に収容された各種の構成部材の表面に対して、部材１を取り付けることができる。部材１の取り付けには、基材２の粘着剤層（気体処理剤が配置されている側の面とは反対側の面の粘着剤層）を利用できる。取り付ける前の部材１は、当該粘着剤層をカバーするセパレータを有していてもよい。セパレータには、公知のセパレータを使用できる。セパレータは、部材１を取り付ける際に剥離される。 The gas processing member 1 can be attached, for example, to the inside of an electronic device or the like. More specifically, with respect to the surface located inside the housing of the electronic device, for example, with respect to the inner surface of the housing of the electronic device and / or the surfaces of various components housed inside the housing. , Member 1 can be attached. The pressure-sensitive adhesive layer of the substrate 2 (the pressure-sensitive adhesive layer on the side opposite to the side on which the gas treatment agent is disposed) can be used to attach the member 1. The member 1 before attachment may have a separator which covers the said adhesive layer. A well-known separator can be used for a separator. The separator is peeled off when the member 1 is attached.
　気体処理用部材１、並びに当該部材１が備える基材２、気体処理剤（例えば気体処理層３）及び保護層４の形状は限定されない。部材１では、上述のように、保護層４と基材２とを接合する際の気体処理剤の位置ずれや、使用中における気体処理剤の位置ずれが抑制される。基材２に対する気体処理剤の位置ずれを抑制できるため、保護層４と基材２との接合部１１の幅を小さくした場合においても、接合部１１の信頼性を確保することが容易となる。このため、部材１は、保護層４と基材２との接合が比較的難しい形状をとりうる。したがって、小型化に適するとともに、部材１がとりうる形状の自由度は高い。 The shapes of the gas processing member 1 and the base 2 provided in the member 1, the gas processing agent (for example, the gas processing layer 3), and the protective layer 4 are not limited. In the member 1, as described above, the positional deviation of the gas treatment agent when bonding the protective layer 4 and the base 2 and the positional deviation of the gas treatment agent during use are suppressed. Since the positional deviation of the gas processing agent with respect to the base material 2 can be suppressed, it is easy to ensure the reliability of the joint portion 11 even when the width of the joint portion 11 between the protective layer 4 and the base member 2 is reduced. . Therefore, the member 1 can have a shape in which bonding of the protective layer 4 and the base 2 is relatively difficult. Therefore, while being suitable for miniaturization, the freedom degree of the shape which member 1 can take is high.
　本発明の気体処理用部材が小型化に適していることを確認するために、通気性を有するとともに粘着剤層を有さない袋状体の内部に吸放湿層が収容された気体処理用部材（吸放湿部材）を、以下のように作製した。 In order to confirm that the gas processing member of the present invention is suitable for miniaturization, it is for gas processing wherein a moisture absorbing and releasing layer is accommodated inside a bag-like body having air permeability and not having an adhesive layer. A member (moisture absorbing and desorbing member) was produced as follows.
　最初に、熱溶着による外周縁部の接合後に気体処理剤を収容する袋状体となる２枚の支持層（サイズ１０ｍｍ×１０ｍｍ）を準備した。準備した支持層は、ＰＴＦＥ多孔質膜（厚さ１０μｍ）と、ＰＥＴ／ＰＥの芯鞘構造を有する複合繊維の不織布（目付３０ｇ／ｍ2）との熱ラミネート品（厚さ１２０μｍ、厚さ方向のガーレー通気度０．２秒／１００ｍＬ、５Ｎ／１０ｍｍの引張応力に対する引張伸びがＭＤ方向について２．０％、ＴＤ方向について４．８％）であった。また、袋状体に収容する気体処理剤として、５ｍｍ×５ｍｍのサイズを有する正方形の吸放湿層であって、ポリアクリレート系繊維の不織布（目付３７８ｇ／ｍ2、４０～６０％ＲＨ（相対湿度）下での厚さ０．８ｍｍ）からなる吸放湿層を準備した。なお、この吸放湿層は、吸放湿部材を作製する一般的な湿度雰囲気下での吸湿状態（吸湿率３０～５０％程度の吸湿状態）のときの厚さを基準として、吸湿率１００％では３０～４０％程度の厚さの増加を示す。一方、長さ方向及び幅方向の大きさは、上記吸湿率の変動によってもほぼ変化しない。 First, two support layers (size: 10 mm × 10 mm) to be bag-like bodies for containing the gas treatment agent after bonding of the outer peripheral portion by heat welding were prepared. The prepared support layer is a thermally laminated product (120 μm in thickness, thickness direction) of a PTFE porous membrane (10 μm in thickness) and a nonwoven fabric (30 g / m 2 in basis weight) of composite fibers having a core / sheath structure of PET / PE. Gurley permeability of 0.2 sec / 100 mL, tensile elongation for a tensile stress of 5 N / 10 mm was 2.0% in the MD direction and 4.8% in the TD direction). In addition, as a gas treating agent to be contained in the bag-like body, it is a square moisture absorbing / desorbing layer having a size of 5 mm × 5 mm, which is a non-woven fabric of polyacrylate fibers (378 g / m 2 basis weight, 40 to 60% RH (relative A moisture absorbing and desorbing layer having a thickness of 0.8 mm under humidity) was prepared. The moisture absorption and release layer has a moisture absorption rate of 100 based on the thickness of the moisture absorption state (moisture absorption rate of about 30 to 50%) under a general humidity atmosphere for producing the moisture absorption and release member. % Indicates an increase in thickness of about 30 to 40%. On the other hand, the size in the length direction and the width direction does not substantially change even by the fluctuation of the moisture absorption rate.
　次に、一方の支持層の上に吸放湿層を配置した。吸放湿層は、支持層の中心と吸放湿層の中心とを揃えるとともに、支持層の辺と吸放湿層の辺とが互いに平行になるように配置した。次に、吸放湿層を覆うように他方の支持層を配置し、双方の支持層を外周縁部において熱溶着により接合して、吸放湿層を内包した袋状体を得た。他方の支持層は、双方の支持層の外周が互いに一致するように配置した。支持層の接合部の幅は１．５ｍｍとした。吸放湿層の端部と支持層の端部との距離は２．５ｍｍとした。次に、１０ｍｍ×１０ｍｍのサイズを有する正方形の両面粘着テープ（日東電工製、Ｎｏ．５０００ＮＳ、厚さ１６０μｍ）の粘着剤層の上に上記作製した袋状体を配置して、吸放湿部材を作製した。なお、袋状体は、袋状体の外周と両面粘着テープの外周とが一致するように配置した。作製した吸放湿部材について、後述する吸湿率は９５％であり、吸湿時における接合部（支持層の熱溶着部）の剥がれは見られなかった。 Next, a moisture absorbing and releasing layer was placed on one of the support layers. The moisture absorbing and releasing layer was disposed so that the center of the support layer and the center of the moisture absorbing and releasing layer were aligned, and the side of the support layer and the side of the moisture absorbing and releasing layer were parallel to each other. Next, the other support layer was disposed to cover the moisture absorption / release layer, and both support layers were joined by heat welding at the outer peripheral edge to obtain a bag-like body including the moisture absorption / release layer. The other support layer was arranged so that the outer peripheries of both support layers coincide with each other. The width of the bonding portion of the support layer was 1.5 mm. The distance between the end of the moisture absorption and release layer and the end of the support layer was 2.5 mm. Next, the above-mentioned bag-like body is disposed on the pressure-sensitive adhesive layer of a square double-sided pressure-sensitive adhesive tape (No. 5000 NS, 160 μm thick, manufactured by Nitto Denko) having a size of 10 mm × 10 mm, Was produced. The bag-like body was disposed such that the outer periphery of the bag-like body and the outer periphery of the double-sided pressure-sensitive adhesive tape coincided. The moisture absorption rate described later was 95% for the produced moisture absorption and release member, and peeling of the bonding portion (thermally welded portion of the support layer) at the time of moisture absorption was not observed.
　次に、２枚の支持層のサイズを７ｍｍ×７ｍｍに変更するとともに、支持層の接合部の幅を０．８ｍｍとした以外は上記と同様にして吸放湿部材の作製を試みた。しかし、支持層の外周縁部を熱溶着する際に支持層が熱収縮することで支持層と吸放湿層との位置ずれが発生し、吸放湿部材の作製が困難であった。通気性を有するとともに粘着剤層を有さない袋状体の内部に吸放湿層が収容された上記吸放湿部材は小型化に必ずしも適していないことが、確認された。 Next, while changing the size of two support layers to 7 mm x 7 mm, and trying the manufacture of a moisture absorption / release member similarly to the above except having made the width | variety of the junction part of a support layer 0.8 mm. However, when the outer peripheral edge portion of the support layer is heat-welded, the support layer is thermally shrunk to cause positional deviation between the support layer and the moisture absorbing and releasing layer, making it difficult to manufacture the moisture absorbing and releasing member. It was confirmed that the above-mentioned moisture absorbing and desorbing member in which the moisture absorbing and desorbing layer was accommodated inside the bag-like body having air permeability and having no adhesive layer was not necessarily suitable for miniaturization.
　図１Ａ及び図１Ｂに示す例では、基材２の主面に垂直な方向からみて、気体処理用部材１、基材２、気体処理層３及び保護層４の形状（以下、部材１及び部材１を構成する各層の形状は、基材２の主面に垂直な方向から見た形状とする）は、正方形である。ただし、部材１、基材２、気体処理層３及び保護層４の形状は上記例に限定されず、互いに独立して、円（略円を含む）、楕円（略楕円を含む）、並びに長方形及び正方形を含む多角形であってもよい。基材２の主面に垂直な方向から見た気体処理層３の面積（以下、部材１及び部材１を構成する各層の面積は、基材２の主面に垂直な方向から見た面積とする）は、通常、基材２の面積よりも小さい。保護層４の形状及び／又は面積は、基材２の形状及び／又は面積と同一であってもよい。部材１の形状及び面積は、基材２の形状及び面積と同一であってもよい。 In the example shown in FIGS. 1A and 1B, the shapes of the gas treating member 1, the base 2, the gas treating layer 3 and the protective layer 4 (hereinafter referred to as members 1 and members) viewed from the direction perpendicular to the main surface of the substrate 2. The shape of each layer constituting 1 is a shape as viewed from the direction perpendicular to the main surface of the base material 2) is a square. However, the shapes of the member 1, the base 2, the gas treatment layer 3 and the protective layer 4 are not limited to the above example, and independently of each other, a circle (including an approximate circle), an ellipse (including an approximate ellipse), and a rectangle And a polygon including a square. The area of the gas treatment layer 3 viewed from the direction perpendicular to the main surface of the substrate 2 (hereinafter, the area of the members 1 and the layers constituting the member 1 is the area viewed from the direction perpendicular to the main surface of the substrate 2 ) Is usually smaller than the area of the substrate 2. The shape and / or area of the protective layer 4 may be identical to the shape and / or area of the substrate 2. The shape and area of the member 1 may be identical to the shape and area of the substrate 2.
　気体処理用部材１及び／又は基材２の面積は、例えば２５００ｍｍ2以下である。部材１の構成によっては、当該面積は、１００ｍｍ2以下、５０ｍｍ2以下、２５ｍｍ2以下、更には１ｍｍ2以下であってもよい。当該面積の下限は限定されず、例えば０．０１ｍｍ2以上である。 The area of the gas processing member 1 and / or the base 2 is, for example, 2500 mm 2 or less. Depending on the configuration of the member 1, the area may be 100 mm 2 or less, 50 mm 2 or less, 25 mm 2 or less, or 1 mm 2 or less. The lower limit of the area is not limited, and is, for example, 0.01 mm 2 or more.
　気体処理用部材１の厚さは、例えば５ｍｍ以下である。部材１の厚さは、１ｍｍ以下、０．５ｍｍ以下、更には０．１ｍｍ以下であってもよい。部材１の厚さの下限は限定されず、例えば０．０１ｍｍ以上である。部材１の厚さがこれらの範囲にある場合、例えば、内部の容積が限定された、小型化された電子機器等への取り付けが容易となる。 The thickness of the gas processing member 1 is, for example, 5 mm or less. The thickness of the member 1 may be 1 mm or less, 0.5 mm or less, or even 0.1 mm or less. The lower limit of the thickness of the member 1 is not limited, and is, for example, 0.01 mm or more. When the thickness of the member 1 is in these ranges, for example, it becomes easy to attach to a miniaturized electronic device or the like with a limited internal volume.
　基材２は両面粘着テープにより構成される。基材２には、公知の両面粘着テープを使用できる。両面粘着テープは、基材層を有する基材付テープであっても、基材層を持たない基材レスのテープであってもよい。基材付テープの基材層は、例えば、ＰＥＴ、ＰＥ及びＰＰ等のポリオレフィン、あるいはセルロースエステル等の樹脂により構成されるフィルム、不織布、フォーム（発泡体）等である。当該テープの粘着剤層を構成する粘着剤には、アクリル系粘着剤、シリコーン系粘着剤、ゴム系粘着剤等の各種の粘着剤を使用できる。なお、両面粘着テープの基材層が不織布、フォーム等の比較的柔らかい層であるか、両面粘着テープが基材レスのテープである場合、部材１の使用時に気体処理剤が膨張する場合においても、保護層４との接合をより確実に維持できる。 The substrate 2 is constituted by a double-sided adhesive tape. A known double-sided pressure-sensitive adhesive tape can be used for the substrate 2. The double-sided pressure-sensitive adhesive tape may be a tape with a base material having a base material layer or a tape without a base material layer. The base material layer of the tape with a base material is, for example, a film, a non-woven fabric, a foam (foam) or the like made of a polyolefin such as PET, PE and PP, or a resin such as cellulose ester. As the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer of the tape, various pressure-sensitive adhesives such as an acrylic pressure-sensitive adhesive, a silicone-based pressure-sensitive adhesive, and a rubber-based pressure-sensitive adhesive can be used. If the base material layer of the double-sided pressure-sensitive adhesive tape is a relatively soft layer such as non-woven fabric or foam, or if the double-sided pressure-sensitive adhesive tape is a substrateless tape, even when the gas treatment agent expands when using the member 1 The bonding with the protective layer 4 can be maintained more reliably.
　基材２の厚さは、例えば０．００５～５ｍｍである。基材２の厚さは、０．０１～１ｍｍ、更には０．０５～０．５ｍｍであってもよい。基材２の厚さがこれらの範囲にある場合、気体処理用部材１として望まれる強度、剛性等を保ちながら、部材１の厚さを低減できる。部材１の厚さの低減により、例えば、内部の容積が限定された、小型化された電子機器等への取り付けが容易となる。また、基材２の厚さがこれらの範囲にある場合、部材１の取り付け性を確保できる。 The thickness of the substrate 2 is, for example, 0.005 to 5 mm. The thickness of the substrate 2 may be 0.01 to 1 mm, and further 0.05 to 0.5 mm. When the thickness of the base material 2 is in these ranges, the thickness of the member 1 can be reduced while maintaining the strength, rigidity, etc. desired for the gas processing member 1. The reduction of the thickness of the member 1 facilitates, for example, attachment to a miniaturized electronic device or the like with a limited internal volume. Moreover, when the thickness of the base material 2 exists in these ranges, the attachment property of the member 1 is securable.
　気体処理剤は、例えば、保護層４を透過した気体（典型的には空気）に含まれる物質を吸収する吸収剤、及び／又は当該気体中に物質を放出する放出剤である。物質の吸収は、化学的吸収であっても物理的吸収であってもよい。気体処理剤は、気体に含まれる物質を吸収する機能と、吸収した物質を特定の条件下で気体中に再放出する機能とを有していてもよい。気体処理剤は、例えば、気体に含まれる水分（水蒸気）を吸収する吸湿剤；気体に含まれる水分を吸収し、吸収した水分を特定の条件下で再放出する吸放湿剤；気体に含まれる臭気物質を吸収する脱臭剤；気体に含まれる酸、アルカリ、腐食性ガス等を吸収する吸着剤である。気体処理層３は、吸湿剤又は吸放湿剤を含んでいてもよい。ただし、気体処理剤は上記例に限定されない。 The gas treatment agent is, for example, an absorbent that absorbs a substance contained in a gas (typically, air) that has permeated the protective layer 4 and / or a release agent that releases the substance into the gas. The absorption of the substance may be chemical absorption or physical absorption. The gas treatment agent may have the function of absorbing the substance contained in the gas and the function of re-releasing the absorbed substance into the gas under specific conditions. The gas treatment agent is, for example, a hygroscopic agent that absorbs moisture (water vapor) contained in the gas; a hygroscopic agent that absorbs moisture contained in the gas and re-releases the absorbed moisture under specific conditions; Deodorizing agent that absorbs odorous substances; and adsorbents that absorb acid, alkali, corrosive gas, etc. contained in gas. The gas treatment layer 3 may contain a hygroscopic agent or a hygroscopic agent. However, the gas treating agent is not limited to the above example.
　気体処理剤は、気体の処理に関する単一の機能を有していても、気体の処理に関する複数の機能を有していてもよい。例えば、気体処理剤は、吸放湿機能及び脱臭機能を有していてもよい。 The gas treating agent may have a single function for the treatment of gas or multiple functions for the treatment of gas. For example, the gas treating agent may have a moisture absorbing and releasing function and a deodorizing function.
　気体処理層３は、単一の気体処理剤から構成されていても、２以上の気体処理剤から構成されていてもよい。また、気体処理層３は、単層構造を有していても、２以上の層の積層構造を有していてもよい。２以上の気体処理剤から構成される気体処理層３において、気体の処理に関する異なる機能を各材料は有することができる。２以上の層の積層構造を有する気体処理層３において、気体の処理に関する異なる機能を各層は有することができる。本発明の効果が得られる限り、気体処理層３は任意の層及び／又は材料を含んでいてもよい。 The gas treatment layer 3 may be composed of a single gas treatment agent or may be composed of two or more gas treatment agents. Further, the gas processing layer 3 may have a single layer structure or a laminated structure of two or more layers. In the gas treatment layer 3 composed of two or more gas treatment agents, each material can have different functions related to gas treatment. In the gas treatment layer 3 having a laminated structure of two or more layers, each layer can have different functions related to the treatment of gas. The gas treatment layer 3 may contain any layer and / or material as long as the effects of the present invention can be obtained.
　吸湿剤又は吸放湿剤である気体処理剤は、例えば、シリカゲル、ゼオライト、クレイ、生石灰、及び塩化カルシウム、炭酸カルシウム、塩化マグネシウム等の金属化合物といった無機吸湿（吸放湿）剤；並びに、吸放湿性を有するアクリル繊維、グラフト重合により親水性基（カルボキシル基、スルホン酸基、４級アンモニウム基、又はこれらの塩等）を導入したポリオレフィン又はポリエステル等の有機高分子の繊維といった有機吸湿（吸放湿）剤である。吸湿層又は吸放湿層である気体処理層３を構成する材料として、上記例に限られず、公知の吸湿剤及び／又は吸放湿剤を採用できる。脱臭剤は、例えば、シリカゲル、活性炭、ゼオライト等である。脱臭層である気体処理層３を構成する材料として、上記例に限られず、公知の脱臭剤を採用できる。これらの材料は、不織布に含浸させたり、バインダーに練り込んで使用してもよい。 For example, inorganic hygroscopic (moisture-desorption / moisture) agents such as silica gel, zeolite, clay, quick lime, and metal compounds such as calcium chloride, calcium carbonate, and magnesium chloride; Organic hygroscopic materials such as acrylic fibers having moisture release property, fibers of organic polymers such as polyolefins or polyesters into which hydrophilic groups (such as carboxyl groups, sulfonic groups, quaternary ammonium groups, or salts thereof) are introduced by graft polymerization. Dehumidifying agent. As a material which constitutes gas processing layer 3 which is a hygroscopic layer or moisture absorption and release layer, it is not restricted to the above-mentioned example, but a publicly known hygroscopic agent and / or a hygroscopic agent can be adopted. The deodorizing agent is, for example, silica gel, activated carbon, zeolite or the like. It is not restricted to the said example as a material which comprises the gas processing layer 3 which is a deodorizing layer, A well-known deodorizing agent is employable. These materials may be impregnated into a non-woven fabric, or may be used by being kneaded into a binder.
　吸放湿剤である気体処理剤は、吸放湿性を有するアクリル繊維を含んでいてもよい。吸放湿性を有するアクリル繊維は、重量あたりの飽和吸湿量が高く、吸湿性能に優れる。また、乾燥雰囲気に置くだけで、容易かつ効率的に放湿が進行する。このため、吸放湿性を有するアクリル繊維を気体処理剤が含む場合、小型化されながら高い吸放湿性能を示す気体処理用部材１が得られる。アクリル繊維は、（メタ）アクリル酸エステル単位を構成単位として有するアクリル樹脂から構成される繊維である。吸放湿性を有するアクリル繊維として、架橋ポリアクリル酸ナトリウム塩系繊維等のポリアクリレート系繊維、表面を加水分解処理したアクリル繊維等、各種の繊維が知られている。吸放湿性を有するアクリル繊維を含む気体処理剤（例えば気体処理層３）は、織布、不織布等の当該繊維の加工層を含んでいてもよいし、織布、不織布等の当該繊維の加工層から構成されてもよい。 The gas processing agent which is a moisture absorbing and releasing agent may include an acrylic fiber having moisture absorbing and releasing properties. An acrylic fiber having moisture absorption and release properties has a high amount of saturated moisture absorption per weight and is excellent in moisture absorption performance. Also, dehumidification proceeds easily and efficiently simply by placing in a dry atmosphere. For this reason, when the gas processing agent contains an acrylic fiber having moisture absorption and release properties, a gas processing member 1 exhibiting high moisture absorption and release performance while being miniaturized can be obtained. Acrylic fiber is a fiber comprised from the acrylic resin which has a (meth) acrylic acid ester unit as a structural unit. Various types of fibers are known as acrylic fibers having moisture absorption and release properties, such as polyacrylate fibers such as crosslinked polyacrylic acid sodium salt fibers, and acrylic fibers having a surface subjected to hydrolysis treatment. The gas treatment agent (for example, the gas treatment layer 3) containing acrylic fiber having moisture absorption and release properties may include a processed layer of the fiber such as woven fabric or non-woven fabric, or may be processed of the fiber such as woven fabric or non-woven fabric It may be composed of layers.
　気体処理剤は、気体処理剤が配置された空間に保護層４を経て外部から透過した物質の吸収により膨張する処理剤であってもよい。気体処理用部材１では、上述のように、保護層４と基材２とを接合する際の気体処理剤の位置ずれや、使用中における気体処理剤の位置ずれが抑制される。基材２に対する気体処理剤の位置ずれを抑制できるため、保護層４と基材２との接合部の幅を小さくした場合においても、接合部１１の信頼性を確保することが容易となる。このため、気体処理剤が上記膨張する処理剤であり、物質の吸収により膨張した場合にも、保護層４と基材２との接合の維持がより確実となる。したがって、部材１では、小型化されながらも上記膨張する気体処理剤の採用が可能となる。上記膨張する気体処理剤は、例えば、吸放湿性を有するアクリル繊維を含む。 The gas treatment agent may be a treatment agent that expands due to absorption of a substance that has permeated from the outside through the protective layer 4 in the space where the gas treatment agent is disposed. In the gas processing member 1, as described above, positional deviation of the gas processing agent when bonding the protective layer 4 and the base 2 and positional deviation of the gas processing agent during use are suppressed. Since positional deviation of the gas processing agent with respect to the base material 2 can be suppressed, it is easy to ensure the reliability of the joint part 11 even when the width of the joint part between the protective layer 4 and the base material 2 is reduced. Therefore, even when the gas treating agent is the above-mentioned expanding treating agent and expands due to the absorption of the substance, the maintenance of the bonding between the protective layer 4 and the base 2 becomes more reliable. Therefore, in the member 1, it is possible to adopt the gas treatment agent that expands while being miniaturized. The expanding gas treatment agent includes, for example, an acrylic fiber having moisture absorption and release properties.
　保護層４は、通気性を有する層である。保護層４の通気性は、気体処理剤の処理する物質が、気体処理剤が配置された上記空間へ外部から透過可能な程度以上であればよい。なお、保護層４の通気性によって、例えば、気体処理用部材１における物質の処理速度を制御できる。 The protective layer 4 is a layer having breathability. The air permeability of the protective layer 4 may be such that the substance to be treated by the gas treatment agent can pass through the space where the gas treatment agent is disposed from the outside. In addition, the processing speed of the substance in the gas processing member 1 can be controlled, for example, by the air permeability of the protective layer 4.
　保護層４を構成する材料は、例えば、ＰＥ及びＰＰ等のポリオレフィン；ＰＥＴ等のポリエステル；ポリテトラフルオロエチレン（ＰＴＦＥ）、ポリフッ化ビニリデン（ＰＶｄＦ）、ポリアミドである。 The material which constitutes the protective layer 4 is, for example, polyolefin such as PE and PP; polyester such as PET; polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVdF), and polyamide.
　保護層４の形態は限定されず、例えば、通気性フィルム、織布、不織布、メッシュ、多孔質膜である。保護層４の平均孔径又は目開きは、気体処理剤の平均粒径、平均繊維径等よりも小さいことが好ましい。この場合、気体処理用部材１を取り付けた空間に対する、気体処理剤に由来する粉末、粒子、粉塵、微細繊維等の飛散を抑制できる。 The form of the protective layer 4 is not limited, and is, for example, a breathable film, a woven fabric, a non-woven fabric, a mesh, or a porous membrane. The average pore diameter or opening of the protective layer 4 is preferably smaller than the average particle diameter, average fiber diameter, etc. of the gas treatment agent. In this case, it is possible to suppress scattering of powder, particles, dust, fine fibers and the like derived from the gas processing agent into the space where the gas processing member 1 is attached.
　保護層４の平均孔径又は目開きは、例えば１ｍｍ以下であり、０．０１ｍｍ以下、更には０．００１ｍｍ以下であってもよい。保護層４の平均孔径又は目開きの下限は、例えば０．００１μｍ以上である。 The average pore size or opening of the protective layer 4 may be, for example, 1 mm or less, 0.01 mm or less, or 0.001 mm or less. The lower limit of the average pore diameter or opening of the protective layer 4 is, for example, 0.001 μm or more.
　保護層４は、ＰＴＦＥ粒子を含むペースト押出物又はキャスト膜を延伸及び焼成して形成した多孔質膜（ＰＴＦＥ多孔質膜）を含んでいてもよい。保護層４は、ＰＴＦＥ多孔質膜からなる層であっても、ＰＴＦＥ多孔質膜と他の通気性層との積層構造を有していてもよい。他の通気性層は、通気性フィルム、織布、不織布、メッシュ、多孔質膜等であってもよい。 The protective layer 4 may include a porous film (PTFE porous film) formed by stretching and calcining a paste extrudate or a cast film containing PTFE particles. The protective layer 4 may be a layer made of a PTFE porous membrane or may have a laminated structure of a PTFE porous membrane and another air-permeable layer. Other breathable layers may be breathable films, woven fabrics, non-woven fabrics, meshes, porous membranes and the like.
　ＰＴＦＥ多孔質膜を含む保護層４は、高い通気性を有しながら、気体以外の物質の透過を防ぐ性能が高い。このため、例えば、気体処理用部材１を取り付けた空間に対する、気体処理剤に由来する粉末、粒子、粉塵、微細繊維等の飛散を抑制できる。また、例えば、吸湿によって気体処理剤の表面に水層が生じる場合にも、部材１を取り付けた空間への水滴の飛散を抑制できる。さらに、ＰＴＦＥ多孔質膜は、自身を構成する材料の飛散性（発塵性）が不織布等に比べて非常に低い。このため、部材１を取り付けた空間にＰＴＦＥ多孔質膜が面するように保護層４を基材２に接合することにより、当該空間への保護層４を構成する材料の飛散を抑制できる。なお、吸放湿性を有するアクリル繊維では、吸湿によって表面に水層が生じる。したがって、吸放湿性を有するアクリル繊維を気体処理剤が含む場合、保護層４はＰＴＦＥ多孔質膜を含むことが好ましい。 The protective layer 4 including the PTFE porous membrane has high air permeability and high performance to prevent the permeation of substances other than gas. For this reason, for example, scattering of powder, particles, dust, fine fibers and the like derived from the gas processing agent can be suppressed in the space where the gas processing member 1 is attached. In addition, for example, even when a water layer is generated on the surface of the gas treatment agent due to moisture absorption, scattering of water droplets into the space where the member 1 is attached can be suppressed. Furthermore, the porous PTFE membrane has very low scattering properties (dusting properties) of the material constituting itself as compared with non-woven fabrics and the like. For this reason, scattering of the material which comprises the protective layer 4 to the said space can be suppressed by joining the protective layer 4 to the base material 2 so that a PTFE porous membrane may face the space which attached the member 1. FIG. In addition, in the acrylic fiber which has moisture absorption / release property, a water layer arises on the surface by moisture absorption. Therefore, when the gas treatment agent contains acrylic fiber having moisture absorption and release properties, the protective layer 4 preferably contains a PTFE porous membrane.
　保護層４は、伸び特性に優れることが好ましい。具体的には、保護層４は、少なくとも１つの面内方向に加えられた５Ｎ／１０ｍｍの引張応力に対して、当該方向に５％以上の引張伸びを示す層であってもよい。上記引張伸びは６％以上、２０％以上、更には１００％以上であってもよい。上記範囲の引張伸びを示す保護層４は、伸び特性に優れ、柔軟である。このため、気体処理剤が上記膨張する処理剤である場合にも、気体処理剤の膨張に合わせて自身が伸張できることにより、保護層４と基材２との接合部１１の信頼性をより確実に確保できる。また、気体処理剤の膨張が制限されることで生じうる処理層３の性能低下を抑制できる。ＰＴＦＥ多孔質膜を含む保護層４、特に、ＰＴＦＥ多孔質膜からなる保護層４、は、上記範囲の引張伸びを示しうる。 The protective layer 4 is preferably excellent in elongation characteristics. Specifically, the protective layer 4 may be a layer exhibiting a tensile elongation of 5% or more in the direction with respect to a tensile stress of 5 N / 10 mm applied in at least one in-plane direction. The tensile elongation may be 6% or more, 20% or more, and further 100% or more. The protective layer 4 exhibiting a tensile elongation in the above range is excellent in elongation characteristics and is flexible. For this reason, even when the gas processing agent is the above-mentioned expanding processing agent, it is possible to stretch itself in accordance with the expansion of the gas processing agent, so that the reliability of the bonding portion 11 between the protective layer 4 and the substrate 2 is more reliable. Can be secured. Moreover, the performance fall of the process layer 3 which may arise because expansion | swelling of a gas processing agent is restricted can be suppressed. The protective layer 4 including the porous PTFE membrane, particularly, the protective layer 4 made of the porous PTFE membrane can exhibit the tensile elongation in the above range.
　保護層４は撥液処理されていてもよい。この場合、例えば、吸湿によって気体処理剤の表面に水層が生じる場合にも、部材１を取り付けた空間への水滴の飛散をより確実に抑制できる。撥液処理は、公知の方法に基づいて実施できる。 The protective layer 4 may be treated to be liquid repellent. In this case, for example, even when an aqueous layer is generated on the surface of the gas treatment agent due to moisture absorption, it is possible to more reliably suppress the scattering of water droplets into the space where the member 1 is attached. The liquid repellent treatment can be carried out based on a known method.
　保護層４の通気性（厚さ方向の通気性）は、日本工業規格（ＪＩＳ）Ｌ１０９６に定められた通気性測定Ｂ法（ガーレー形法）に準拠して測定した空気透過度（ガーレー通気度）にして、例えば５００秒／１００ｍＬ以下であり、５０秒／１００ｍＬ以下、更には１秒／１００ｍＬ以下であってもよい。なお、保護層４のサイズが、上記ガーレー形法における試験片のサイズ（約５０ｍｍ×５０ｍｍ）に満たない場合にも、測定冶具の使用により、上記ガーレー通気度の評価が可能である。測定冶具の一例は、貫通孔（直径１ｍｍ又は２ｍｍの円形の断面を有する）が中央に設けられた、厚さ２ｍｍ、直径４７ｍｍのポリカーボネート製円板である。この測定冶具を用いたガーレー通気度の測定は、以下のように実施できる。 The air permeability of the protective layer 4 (air permeability in the thickness direction) was measured using the air permeability measurement method B (Gurley type method) defined in Japanese Industrial Standard (JIS) L1096 (Gurley air permeability) And may be, for example, 500 seconds / 100 mL or less, 50 seconds / 100 mL or less, and further 1 second / 100 mL or less. In addition, also when the size of the protective layer 4 is less than the size (about 50 mm x 50 mm) of the test piece in the said Gurley type | mold method, evaluation of the said Gurley permeability is possible by use of a measurement jig. An example of the measuring jig is a polycarbonate disc having a thickness of 2 mm and a diameter of 47 mm, in which a through hole (having a circular cross section with a diameter of 1 mm or 2 mm) is provided at the center. The measurement of Gurley air permeability using this measurement jig can be carried out as follows.
　貫通孔の開口を覆うように、測定冶具の一方の面に評価対象である保護層を固定する。固定は、ガーレー通気度の測定中、開口及び評価対象である保護層の有効試験部（固定した保護層の主面に垂直な方向から見て開口と重複する部分）のみを空気が通過し、かつ保護層の有効試験部における空気の通過を固定部分が阻害しないように行う。保護層の固定には、開口の形状と一致した形状を有する通気口が中心部に打ち抜かれた両面粘着テープを利用できる。両面粘着テープは、通気口の周と開口の周とが一致するように測定冶具と保護層との間に配置すればよい。次に、保護層を固定した測定冶具を、保護層の固定面が測定時の空気流の下流側となるようにガーレー形通気性試験機にセットして、ガーレー通気度を測定する。次に、測定したガーレー通気度を、ＪＩＳ　Ｌ１０９６の通気性測定Ｂ法（ガーレー形法）に定められた有効面積６４２[ｍｍ2]あたりの値ｔに、式ｔ＝｛（測定値）×（保護層の有効試験部の面積[ｍｍ2]）／６４２[ｍｍ2]｝により換算し、得られた換算値ｔを、保護層のガーレー通気度とすることができる。 The protective layer to be evaluated is fixed to one surface of the measurement jig so as to cover the opening of the through hole. For fixing, during measurement of Gurley permeability, air passes only through the opening and the effective test part of the protective layer to be evaluated (the part overlapping the opening when viewed from the direction perpendicular to the main surface of the fixed protective layer), And the fixed part should not block the passage of air in the effective test part of the protective layer. For fixing the protective layer, it is possible to use a double-sided adhesive tape in which a vent having a shape corresponding to the shape of the opening is punched at the center. The double-sided adhesive tape may be disposed between the measuring jig and the protective layer so that the circumference of the vent and the circumference of the opening coincide. Next, the measurement jig to which the protective layer is fixed is set in the Gurley air permeability tester so that the fixed surface of the protective layer is on the downstream side of the air flow at the time of measurement, and the Gurley air permeability is measured. Next, the measured Gurley air permeability is converted into a value t per effective area 642 [mm 2 ] defined by the air permeability measurement method B (Gurley type method) of JIS L1096, the formula t = {(measured value) × ( It can be converted by the area [mm 2 ]) / 642 [mm 2 ]} of the effective test portion of the protective layer, and the obtained converted value t can be made the Gurley permeability of the protective layer.
　保護層４の構成は、通気性を有する限り、上記例に限定されない。 The configuration of the protective layer 4 is not limited to the above example as long as it has air permeability.
　気体処理用部材１は、本発明の効果が得られる限り、上述した以外の任意の層、及び／又は部材を備えることができる。 The gas processing member 1 can be provided with any layer and / or member other than those described above as long as the effects of the present invention can be obtained.
　気体処理用部材１は、例えば、両面粘着テープである基材２の上に気体処理剤（例えば気体処理層３）を配置し、気体処理剤を覆うように保護層４を配置し、接合部１１が気体処理剤を囲むように基材２の粘着剤層に保護層４を接合して形成できる。 In the gas processing member 1, for example, the gas processing agent (for example, the gas processing layer 3) is disposed on the base material 2 which is a double-sided adhesive tape, and the protective layer 4 is disposed to cover the gas processing agent. The protective layer 4 can be formed by bonding the pressure-sensitive adhesive layer of the substrate 2 such that 11 surrounds the gas treatment agent.
　気体処理剤の一種である吸湿剤及び吸放湿剤について、その吸湿性能を吸湿率により評価できる。吸湿率は、乾燥させた吸湿剤又は吸放湿剤を湿潤雰囲気に所定の時間置いたときに吸湿剤又は吸放湿剤が吸収する気体中の水分の量により評価できる。具体的に、吸湿率は、設定温度８０℃以上の乾燥機内に１時間以上放置して乾燥させた吸湿剤又は吸放湿剤の重量（乾燥時重量）Ｗ１（ｇ）と、乾燥後の吸湿剤又は吸放湿剤を３５℃、９０％ＲＨの湿潤雰囲気に６時間放置した後の重量（吸湿時重量）Ｗ２（ｇ）とから、以下の式により求めることができる。
　式：吸湿率（％）＝（Ｗ２－Ｗ１）／Ｗ１×１００ The hygroscopicity of the hygroscopic agent and the hygroscopic agent which are one of the gas treatment agents can be evaluated by the hygroscopicity. The moisture absorption rate can be evaluated by the amount of moisture in the gas absorbed by the moisture absorbent or the moisture absorbent when the dried moisture absorbent or the moisture absorbent is placed in a wet atmosphere for a predetermined time. Specifically, the moisture absorption rate is the weight (weight at the time of drying) W1 (g) of the moisture absorbing agent or the moisture absorbing and releasing agent dried by leaving it to stand in the drier at a set temperature of 80 ° C. or more for 1 hour or more From the weight (weight at the time of moisture absorption) W2 (g) after leaving the agent or the moisture absorbent at a wet atmosphere of 35 ° C., 90% RH for 6 hours, it can be determined by the following equation.
Formula: Moisture absorption rate (%) = (W2-W1) / W1 × 100
　吸湿剤及び吸放湿剤の吸湿率は、例えば８０％以上であり、８５％以上、９０％以上、更には９５％以上であってもよい。 The moisture absorption rate of the moisture absorbing agent and the moisture absorbing and releasing agent is, for example, 80% or more, and may be 85% or more, 90% or more, and further 95% or more.
　気体処理用部材１は、例えば、枚葉状のベースフィルム上に配置した形態、帯状のベースフィルム上に配置し、ロール又はリールに巻回した形態で供給できる。ベースフィルムへの気体処理用部材１の配置には、基材２の粘着剤層を利用できる。ベースフィルムにおける気体処理用部材１が配置される面には、ベースフィルムからの当該部材１の剥離を容易とする剥離層が形成されていてもよい。ベースフィルムには、例えば、高分子フィルム、紙、金属フィルム、及びこれらの複合フィルム等を使用できる。部材１をベースフィルム上に配置した状態の一例を図２に示す。図２に示す例では、基材２の粘着剤層を介してベースフィルム２１上に部材１が配置されている。 The gas processing member 1 can be supplied, for example, in the form of being disposed on a sheet-like base film, or disposed on a strip-like base film and wound in a roll or a reel. The pressure-sensitive adhesive layer of the substrate 2 can be used to arrange the gas processing member 1 on the base film. A release layer may be formed on the surface of the base film on which the gas processing member 1 is disposed, to facilitate the release of the member 1 from the base film. As the base film, for example, a polymer film, paper, a metal film, a composite film of these, and the like can be used. An example of the state which arrange | positioned the member 1 on the base film is shown in FIG. In the example shown in FIG. 2, the member 1 is disposed on the base film 21 via the pressure-sensitive adhesive layer of the substrate 2.
　気体処理用部材１は、任意の空間に取り付けることができる。気体処理用部材１は、例えば、電子機器、光学機器等の各種の機器の内部に取り付けられて使用できる。光学機器は、電子回路を有さないもの、即ち、電子機器ではないものであってもよい。電子機器には、精密機器、電子部品等が含まれる。部材１は、例えば、これらの機器の筐体の内部に位置する表面、より具体的な例として、筐体の内面及び／又は筐体の内部に収容された各種の構成部材の表面に対して取り付けることができる。部材１の取り付けには、基材２の粘着剤層（気体処理剤が配置されている側の面とは反対側の面の粘着剤層）を利用できる。これらの機器の具体的な例は、カメラ、カメラレンズ等の撮像機器、車載用レーダー等のセンシング機器、カメラ、カメラレンズ、レンズカバー等の光学機器、光センサー等の光学電子部品である。ただし、気体処理用部材１を取り付け可能な機器は、上記例に限定されない。吸湿部材又は吸放湿部材である気体処理用部材１を取り付けた場合、例えば、取り付けた空間、及び／又は当該空間に面する表面における結露の発生を抑制できる。 The gas treatment member 1 can be attached to any space. The gas processing member 1 can be used by being attached to the inside of various devices such as an electronic device and an optical device. The optical device may be one that does not have an electronic circuit, that is, one that is not an electronic device. Electronic devices include precision devices, electronic components and the like. The member 1 is, for example, a surface located inside the housing of these devices, and more specifically, the inner surface of the housing and / or a surface of various components housed inside the housing. It can be attached. The pressure-sensitive adhesive layer of the substrate 2 (the pressure-sensitive adhesive layer on the side opposite to the side on which the gas treatment agent is disposed) can be used to attach the member 1. Specific examples of these devices are imaging devices such as cameras and camera lenses, sensing devices such as in-vehicle radars, optical devices such as cameras, camera lenses and lens covers, and optical electronic components such as optical sensors. However, the apparatus to which the gas processing member 1 can be attached is not limited to the above example. When the gas processing member 1 which is a moisture absorbing member or a moisture absorbing and releasing member is attached, for example, the occurrence of dew condensation in the attached space and / or the surface facing the space can be suppressed.
　気体処理用部材１は、筐体の内部における結露を防ぐべき部位に取り付けられることが好ましい。結露を防ぐべき部位は、例えば、光を屈折、反射、あるいは透過等させる光学機能を有する光学部材、特に、その表面である。光学部材及びその表面への結露は、光学部材を備える機器の機能及び／又は性能を損なうことがある。光学部材の例は、レンズ、プリズム等の屈折部材、ミラー、ハーフミラー等の反射部材、光学フィルタ、光透過窓、光透過性保護フィルム等の透過部材、導光シート等の導光部材、位相差フィルム、光干渉シート等の干渉部材、発光ダイオード（ＬＥＤ）、液晶素子及びディスプレイ（ＬＣＤ）、有機エレクトロルミネッセンス（ＯＥＬ）素子及びディスプレイ（ＯＬＥＤ）等の発光部材である。ただし、光学部材は上記例に限定されない。また、光学部材及びその表面への部材１の取り付けは、光学部材の機能及び／又は性能を損なうことがある。このような場合には、筐体の内部における結露を防ぐべき部位の近傍に部材１を取り付けてもよい。言い換えると、部材１は、筐体の内部における結露を防ぐべき部位又は当該部位の近傍に取り付けられてもよい。なお、本明細書において「近傍」とは、対象となる部位に対して、例えば１０ｍｍ以下、好ましくは５ｍｍ以下、より好ましくは１ｍｍ以下の間隔にある位置を意味している。間隔は、０（ゼロ）ｍｍであってもよい。 It is preferable that the gas processing member 1 be attached to a portion of the inside of the housing that should prevent condensation. The site to prevent condensation is, for example, an optical member having an optical function of refracting, reflecting or transmitting light, in particular, the surface thereof. The condensation on the optical member and its surface may impair the function and / or the performance of the device comprising the optical member. Examples of the optical member include a lens, a refractive member such as a prism, a mirror, a reflective member such as a half mirror, an optical filter, a light transmissive window, a transmissive member such as a light transmissive protective film, a light guide member such as a light guide sheet, It is a light emitting member such as a retardation film, an interference member such as a light interference sheet, a light emitting diode (LED), a liquid crystal element and a display (LCD), an organic electroluminescence (OEL) element and a display (OLED). However, the optical member is not limited to the above example. Also, the attachment of the optical member and the member 1 to the surface thereof may impair the function and / or performance of the optical member. In such a case, the member 1 may be attached in the vicinity of the portion of the inside of the housing where condensation should be prevented. In other words, the member 1 may be attached at or near the site where condensation should be prevented inside the housing. In the present specification, the term “proximate” means a position at an interval of, for example, 10 mm or less, preferably 5 mm or less, more preferably 1 mm or less, with respect to the target portion. The spacing may be 0 (zero) mm.
　結露を防ぐべき部位は、回路基板等の電子部品であってもよく、筐体の内部における結露が生じうる部分（被結露部）であってもよい。被結露部は、典型的には、筐体において外気温の変動による温度変化が大きく、面する空間の相対湿度が上昇しやすい部分である。被結露部の具体例は、カメラレンズの鏡胴の内面、筐体の薄肉部、及び筐体において金属により構成される部位である。被結露部であることは、例えば、所定の温度及び相対湿度（例えば、２５℃及び６０％ＲＨ）に保たれた第１の雰囲気に所定の時間（例えば６時間）以上放置した機器を、より温度の低い第２の雰囲気（例えば、－１５℃）に移動させる試験を実施したときに結露が生じる部分として確認できる。この試験では、第２の雰囲気への移動時に筐体の内部の水蒸気が外部に拡散することを防ぎ、これにより、結露をより確実に発生させることで上記部分の確認を容易とするために、第２の雰囲気に移動させる際に筐体を密閉状態としてもよい。 The portion to be prevented from dew condensation may be an electronic component such as a circuit board, or may be a portion (condensed portion) where condensation can occur inside the housing. The portion to be subjected to dew condensation is typically a portion of the housing where the temperature change due to the fluctuation of the outside air temperature is large and the relative humidity of the facing space is likely to rise. A specific example of the dew condensation target is an inner surface of a lens barrel of a camera lens, a thin wall portion of a housing, and a portion made of metal in the housing. Being a portion subjected to condensation means, for example, that a device left for a predetermined time (for example, 6 hours) or more in a first atmosphere kept at a predetermined temperature and relative humidity (for example, 25.degree. C. and 60% RH). It can be confirmed as a portion where condensation occurs when a test in which the temperature is moved to a second atmosphere (for example, -15.degree. C.) is performed. In this test, in order to prevent the water vapor inside the housing from diffusing to the outside when moving to the second atmosphere, thereby more reliably generating condensation, the above-mentioned portion can be easily confirmed. The housing may be sealed when moved to the second atmosphere.
　［機器］
　本発明の機器の一例を図４に示す。図４には、電子機器及び光学機器の一種であるカメラ３１が示されている。カメラ３１は、ボディ３２とカメラレンズ３３とを備える。ボディ３２の筐体４３の内部には、撮像素子３５、回路基板３６、外部モニタ３７、及び電子ファインダー３８が収容されている。また、筐体４３には、カメラレンズ３３を透過した光４５を撮像素子３５に導く開口３４、及び電子ファインダー３８からの光４６を外部に導くファインダー窓３９が設けられている。筐体４３において、チルト可能な外部モニタ３７が収容される部分は、他の部分に比べて厚さが削減された薄肉部となっている。カメラレンズ３３の筐体４４には、レンズ４０，４１，４２が固定されている。カメラ３１の内部、より具体的には、カメラ３１（ボディ３２及び／又はカメラレンズ３３）の筐体の内部には、気体処理用部材１Ａ～１Ｉから選ばれる少なくとも１つが収容されている。当該少なくとも１つの気体処理用部材は、本発明の気体処理用部材１であり、典型的には、当該部材が備える基材２の粘着剤層（両面粘着テープにおける気体処理剤が配置されている側の面とは反対側の面の粘着剤層）によって筐体４３及び／又は筐体４４の内部に位置する表面に対して取り付けられている。カメラ３１における気体処理用部材１が取り付けられている位置は、筐体４３及び／又は筐体４４の内部における結露を防ぐべき部位又はその近傍である。具体的には、上記位置は、レンズ４０における筐体４４側の面の近傍、レンズ４２における筐体４４側の面の近傍、撮像素子３５の近傍、回路基板３６の近傍、筐体４３の薄肉部の表面、ファインダー窓３９における筐体４３側の面の近傍である。 [machine]
An example of the device of the present invention is shown in FIG. FIG. 4 shows a camera 31 which is a type of electronic device and optical device. The camera 31 includes a body 32 and a camera lens 33. The imaging device 35, the circuit board 36, the external monitor 37, and the electronic finder 38 are accommodated in the housing 43 of the body 32. Further, the housing 43 is provided with an opening 34 for guiding the light 45 transmitted through the camera lens 33 to the imaging device 35 and a finder window 39 for guiding the light 46 from the electronic finder 38 to the outside. In the housing 43, a portion in which the tiltable external monitor 37 is accommodated is a thin portion whose thickness is reduced as compared with other portions. Lenses 40, 41 and 42 are fixed to a housing 44 of the camera lens 33. At least one selected from the gas processing members 1A to 1I is accommodated inside the camera 31, more specifically, inside the housing of the camera 31 (body 32 and / or camera lens 33). The at least one gas treatment member is the gas treatment member 1 of the present invention, and typically, the pressure-sensitive adhesive layer of the substrate 2 provided in the member (a gas treatment agent in the double-sided pressure-sensitive adhesive tape is disposed It is attached to the surface located inside housing 43 and / or housing 44 by the adhesive layer on the surface opposite to the side surface. The position at which the gas processing member 1 is attached to the camera 31 is at or near a portion of the housing 43 and / or the housing 44 in which condensation is to be prevented. Specifically, the position is near the surface on the housing 44 side of the lens 40, near the surface on the housing 44 side of the lens 42, near the imaging device 35, near the circuit board 36, thin in the housing 43 It is the vicinity of the surface of the unit, the surface on the case 43 side of the finder window 39.
　本発明の機器は、図４に示す例に限定されない。本発明の機器及び当該機器における結露を防ぐべき部位の例は、上述のとおりである。 The device of the present invention is not limited to the example shown in FIG. An example of the device of the present invention and a portion of the device to prevent condensation is as described above.
　以下、実施例により、本発明をさらに具体的に説明する。本発明は、以下に示す実施例に限定されない。 Hereinafter, the present invention will be more specifically described by way of examples. The present invention is not limited to the examples shown below.
　最初に、本実施例において作製した気体処理用部材（吸放湿部材）の評価方法を示す。 First, an evaluation method of the gas processing member (the moisture absorbing and desorbing member) manufactured in the present example will be shown.
　［吸湿率］
　作製した吸放湿部材の吸湿性能を、当該部材が内部に備える吸放湿層の吸湿率により評価した。評価方法は次のとおりである。 Moisture absorption rate
The moisture absorption performance of the produced moisture absorption and release member was evaluated by the moisture absorption rate of the moisture absorption and release layer with which the said member is equipped inside. The evaluation method is as follows.
　最初に、吸放湿部材に組み込む吸放湿層を乾燥機（設定温度８０℃以上）内に１時間以上放置して乾燥させ、乾燥時重量Ｗ１（ｇ）を測定した。次に、当該吸放湿層を用いて吸放湿部材を作製し、作製した吸放湿部材を上記乾燥機内に１時間以上放置して乾燥させ、当該部材の乾燥時重量Ｗ３（ｇ）を測定した。次に、乾燥後の吸放湿部材を３５℃、９０％ＲＨの湿潤雰囲気に６時間放置して空気中の水分を吸収させ、当該部材の吸湿時重量Ｗ４（ｇ）を測定した。測定したＷ１、Ｗ３及びＷ４から、以下の式により、吸放湿層の吸湿率を求めた。
　式：吸湿率（％）＝（Ｗ４－Ｗ３）／Ｗ１×１００ First, the moisture absorbing and desorbing layer incorporated in the moisture absorbing and desorbing member was allowed to stand in a drier (set temperature 80 ° C. or more) for 1 hour or more for drying, and the dry weight W1 (g) was measured. Next, a moisture absorbing / releasing member is manufactured using the moisture absorbing / releasing layer, and the manufactured moisture absorbing / releasing member is left in the dryer for 1 hour or more to dry, and the dry weight W3 (g) of the member is determined. It was measured. Next, the moisture absorbing / releasing member after drying was allowed to stand in a humidified atmosphere of 35 ° C. and 90% RH for 6 hours to absorb moisture in the air, and the weight W4 (g) at moisture absorption of the member was measured. From the measured W1, W3 and W4, the moisture absorption rate of the moisture absorbing and releasing layer was determined by the following equation.
Formula: Moisture absorption rate (%) = (W4-W3) / W1 × 100
　［吸湿時における接合部の剥がれの有無］
　作製した吸放湿部材を、３５℃、９０％ＲＨの湿潤雰囲気に６時間放置して空気中の水分を吸収させた後、接合部における基材からの保護層の剥がれがないかを、目視により確認した。 [Presence or absence of peeling of the joint at the time of moisture absorption]
The moisture absorbing / releasing member thus prepared is left in a humid atmosphere of 35 ° C. and 90% RH for 6 hours to absorb moisture in the air, and then it is visually observed whether or not the protective layer is peeled off from the base material at the bonding portion It confirmed by.
　［引張応力に対する引張伸び］
　吸放湿部材の作製に使用した保護層について、５Ｎ／１０ｍｍの引張応力に対する引張伸びを引張試験により測定した。引張試験は、島津製作所製オートグラフＡＧ－１を用い、チャック間距離２０ｍｍ、引張速度２００ｍｍ／分、及び試験温度２５℃の条件にて実施した。サンプル形状は、幅１０ｍｍ、長さ１００ｍｍの短冊状とした。試験は、保護層が含むＰＴＦＥ多孔質膜のＭＤ方向又はＴＤ方向を引張方向（上記サンプルの長さ方向）として、いずれの方向に対しても実施した。 [Tensile elongation to tensile stress]
The tensile elongation to a tensile stress of 5 N / 10 mm was measured by a tensile test for the protective layer used for producing the moisture absorbent / desorbent member. The tensile test was carried out using an autograph AG-1 manufactured by Shimadzu Corporation at a distance between chucks of 20 mm, a tensile speed of 200 mm / min, and a test temperature of 25 ° C. The sample shape was a strip having a width of 10 mm and a length of 100 mm. The test was performed in any direction, with the MD direction or the TD direction of the PTFE porous membrane included in the protective layer as the tensile direction (the direction of the length of the sample).
　（実施例１）
　１０ｍｍ×１０ｍｍのサイズを有する正方形の両面粘着テープ（日東電工製、Ｎｏ．５０００ＮＳ、厚さ１６０μｍ）を基材として準備した。また、１０ｍｍ×１０ｍｍのサイズを有する正方形の保護層（厚さ１２０μｍ）を準備した。準備した保護層は、ＰＴＦＥ多孔質膜（厚さ１０μｍ）と、ＰＥＴ／ＰＥの芯鞘構造を有する複合繊維の不織布（目付３０ｇ／ｍ2）との熱ラミネートによる積層構造を有していた。保護層の通気性は、ガーレー通気度により表して０．２秒／１００ｍＬであった。５Ｎ／１０ｍｍの引張応力に対する保護層の引張伸びは、ＭＤ方向について２．０％、ＴＤ方向について４．８％であった。 Example 1
A square double-sided pressure-sensitive adhesive tape (manufactured by Nitto Denko, No. 5000 NS, 160 μm thick) having a size of 10 mm × 10 mm was prepared as a substrate. Moreover, the square protective layer (120 micrometers in thickness) which has a size of 10 mm x 10 mm was prepared. The prepared protective layer had a laminated structure by thermal lamination of a PTFE porous membrane (10 μm in thickness) and a nonwoven fabric of a composite fiber having a PET / PE core-sheath structure (30 g / m 2 in basis weight). The breathability of the protective layer was 0.2 seconds / 100 mL as expressed by Gurley permeability. The tensile elongation of the protective layer to a tensile stress of 5 N / 10 mm was 2.0% in the MD direction and 4.8% in the TD direction.
　５ｍｍ×５ｍｍのサイズを有する正方形の吸放湿層であって、ポリアクリレート系繊維の不織布（目付３７８ｇ／ｍ2、４０～６０％ＲＨ下での厚さ０．８ｍｍ）からなる吸放湿層を準備した。なお、この吸放湿層は、吸放湿部材を作製する一般的な湿度雰囲気である４０～６０％ＲＨ下での吸湿状態（吸湿率３０～５０％程度の吸湿状態）のときの厚さを基準として、吸湿率１００％では３０～４０％程度の厚さの増加を示す。一方、長さ方向及び幅方向の大きさは、上記吸湿率の変動によってもほぼ変化しない。 It is a square moisture absorbing and releasing layer having a size of 5 mm × 5 mm, which is made of non-woven fabric of polyacrylate fiber (378 g / m 2 basis weight, 0.8 mm thickness under 40 to 60% RH) Prepared. This moisture absorbing and releasing layer has a thickness when it is in a hygroscopic state (moisture absorbing state of about 30 to 50% of hygroscopicity) under 40 to 60% RH which is a general humidity atmosphere for producing a moisturizing and releasing member. The 100% moisture absorption shows an increase in thickness of about 30 to 40% based on the following. On the other hand, the size in the length direction and the width direction does not substantially change even by the fluctuation of the moisture absorption rate.
　次に、基材の粘着剤層上に吸放湿層を配置した。吸放湿層は、基材の中心と吸放湿層の中心とを揃えるとともに、基材の辺と吸放湿層の辺とが互いに平行になるように配置した（図３参照）。次に、吸放湿層を覆うように保護層を配置し、保護層の外周縁部において基材の粘着剤層と保護層とを接合して吸放湿部材を作製できた。保護層は、基材の外周と保護層の外周とが一致するように配置した。基材と保護層との接合部２２の幅Ｌ１は１．５ｍｍとした。吸放湿層の端部２４と基材及び保護層の端部２３との距離Ｌ２は２．５ｍｍであった。作製した吸放湿部材について、吸湿率は９８％であり、吸湿時における接合部の剥がれは見られなかった。 Next, a moisture absorbing and releasing layer was disposed on the pressure-sensitive adhesive layer of the substrate. The moisture absorbing and releasing layer was arranged so that the center of the substrate and the center of the moisture absorbing and releasing layer were aligned, and the side of the substrate and the side of the moisture absorbing and releasing layer were parallel to each other (see FIG. 3). Next, a protective layer was disposed so as to cover the moisture absorbing and releasing layer, and the pressure sensitive adhesive layer of the base material and the protective layer were joined at the outer peripheral edge of the protective layer to prepare a moisture absorbing and releasing member. The protective layer was disposed such that the outer periphery of the substrate and the outer periphery of the protective layer coincided. The width L1 of the bonding portion 22 between the base and the protective layer was 1.5 mm. The distance L2 between the end 24 of the moisture absorbing and releasing layer and the end 23 of the substrate and the protective layer was 2.5 mm. The moisture absorption rate of the produced moisture absorption and release member was 98%, and no peeling of the joint at the time of moisture absorption was observed.
　（実施例２）
　基材及び保護層のサイズを７ｍｍ×７ｍｍに変更するとともに、単層のＰＴＦＥ多孔質膜（厚さ８０μｍ、ガーレー通気度１．０秒／１００ｍＬ）に保護層を変更した以外は実施例１と同様にして、吸放湿部材を作製できた。５Ｎ／１０ｍｍの引張応力に対する保護層の引張伸びは、ＰＴＦＥ多孔質膜のＭＤ方向について１７．３％、ＴＤ方向について２５．０％以上であった。基材と保護層との接合部２２の幅Ｌ１は０．８ｍｍとした。吸放湿層の端部２４と基材及び保護層の端部２３との距離Ｌ２は１．０ｍｍであった。作製した吸放湿部材について、吸湿率は９５％であり、吸湿時における接合部の剥がれは見られなかった。 (Example 2)
Example 1 and Example 1 except that the size of the substrate and the protective layer was changed to 7 mm × 7 mm, and the protective layer was changed to a single-layer PTFE porous membrane (80 μm thick, Gurley air permeability 1.0 second / 100 mL). In the same manner, a moisture absorbing and releasing member was produced. The tensile elongation of the protective layer against a tensile stress of 5 N / 10 mm was 17.3% in the MD direction of the porous PTFE membrane and 25.0% or more in the TD direction. The width L1 of the bonding portion 22 between the base and the protective layer was 0.8 mm. The distance L2 between the end 24 of the moisture absorbing and releasing layer and the end 23 of the substrate and the protective layer was 1.0 mm. The moisture absorption rate of the produced moisture absorption and release member was 95%, and peeling of the joint at the time of moisture absorption was not observed.
　（実施例３）
　保護層を別の単層のＰＴＦＥ多孔質膜（厚さ８０μｍ、ガーレー通気度３．０秒／１００ｍＬ）に変更した以外は実施例２と同様にして、吸放湿部材を作製できた。５Ｎ／１０ｍｍの引張応力に対する保護層の引張伸びは、ＰＴＦＥ多孔質膜のＭＤ方向について７．５％、ＴＤ方向について２５．０％以上であった。作製した吸放湿部材について、吸湿率は９６％であり、吸湿時における接合部の剥がれは見られなかった。 (Example 3)
A moisture absorbing and desorbing member was produced in the same manner as in Example 2 except that the protective layer was changed to another single-layer PTFE porous membrane (thickness 80 μm, Gurley air permeability 3.0 seconds / 100 mL). The tensile elongation of the protective layer against a tensile stress of 5 N / 10 mm was 7.5% in the MD direction of the PTFE porous membrane and 25.0% or more in the TD direction. The moisture absorption rate of the produced moisture absorption and release member was 96%, and no peeling of the joint at the time of moisture absorption was observed.
　（実施例４）
　基材及び保護層のサイズ及び形状を６ｍｍ×２２ｍｍの長方形に変更し、吸放湿層のサイズ及び形状を４ｍｍ×２０ｍｍの長方形に変更するとともに、単層のＰＴＦＥ多孔質膜（厚さ８０μｍ、ガーレー通気度１．０秒／１００ｍＬ）に保護層を変更した以外は実施例１と同様にして、吸放湿部材を作製できた。５Ｎ／１０ｍｍの引張応力に対する保護層の引張伸びは、ＰＴＦＥ多孔質膜のＭＤ方向について１７．３％、ＴＤ方向について２５．０％以上であった。基材と保護層との接合部２２の幅Ｌ１は０．８ｍｍとした。吸放湿層の端部２４と基材及び保護層の端部２３との距離Ｌ２は１．０ｍｍであった。作製した吸放湿部材について、吸湿率は９５％であり、吸湿時における接合部の剥がれは見られなかった。吸放湿部材は、２つ作製した。 (Example 4)
The size and shape of the substrate and protective layer are changed to a 6 mm × 22 mm rectangle, and the size and shape of the moisture absorbing and releasing layer are changed to a 4 mm × 20 mm rectangle, and a single-layer PTFE porous membrane (80 μm thick, A moisture absorbing and releasing member was produced in the same manner as in Example 1 except that the protective layer was changed to a Gurley air permeability of 1.0 sec / 100 mL). The tensile elongation of the protective layer against a tensile stress of 5 N / 10 mm was 17.3% in the MD direction of the porous PTFE membrane and 25.0% or more in the TD direction. The width L1 of the bonding portion 22 between the base and the protective layer was 0.8 mm. The distance L2 between the end 24 of the moisture absorbing and releasing layer and the end 23 of the substrate and the protective layer was 1.0 mm. The moisture absorption rate of the produced moisture absorption and release member was 95%, and peeling of the joint at the time of moisture absorption was not observed. Two moisture absorbing and releasing members were produced.
　次に、内容積５０ｍＬの有底円筒状のガラス容器（ガラス製サンプル瓶、直径約３２ｍｍ、高さ約６５ｍｍ）を準備し、断熱フィルムの貼付によって当該容器の側面を断熱した。断熱フィルムには、両面粘着テープ（日東電工製Ｎｏ．５７１１５Ｂ、厚さ０．１５ｍｍ、基材層がＰＥフォーム）と、ＰＥＴフィルム（東レ製ルミラー、厚さ１００μｍ）との積層品を使用し、両面粘着テープの粘着剤層を用いて容器の側面（外側面）の全体に上記断熱フィルムを貼付した。なお、当該容器の底面に対しては、断熱フィルムの貼付は実施しなかった。次に、上記作製した２つの吸放湿部材を、上記容器内の底面近傍の側面（内側面）に対して、各々の一方の長辺が上記底面から約０．２ｍｍ離間する位置となり、かつ各々の長辺方向が容器の周方向となるように、また、互いに重複しないように、取り付けた。取り付けには、基材の粘着剤層を使用した。次に、２５℃及び６０％ＲＨの環境下に６時間以上、蓋（ＰＥ製）をしない状態で容器を放置した後、蓋を閉めてすぐに－１５℃の環境に容器を移動させた。移動から５分が経過した時点において容器の底面に結露が生じたかを目視により確認したところ、結露は生じていなかった。 Next, a bottomed cylindrical glass container (glass sample bottle, about 32 mm in diameter, about 65 mm in height) having an inner volume of 50 mL was prepared, and the side of the container was thermally insulated by the application of a heat insulating film. For the heat insulation film, use a laminate of double-sided adhesive tape (No. 57115B manufactured by Nitto Denko, thickness 0.15 mm, PE foam base layer) and PET film (Lumirror manufactured by Toray Industries, thickness 100 μm), The above-mentioned heat insulation film was stuck on the whole side (outside side) of a container using the adhesive layer of a double-sided adhesive tape. In addition, sticking of the heat insulation film was not implemented with respect to the bottom face of the said container. Next, with respect to the side surface (inner side surface) in the vicinity of the bottom surface in the container, one long side of each of the two manufactured moisture absorbing and desorbing members is separated from the bottom surface by about 0.2 mm, It was attached so that each long side direction would be the circumferential direction of the container and so as not to overlap each other. The adhesive layer of the substrate was used for attachment. Next, the container was left without a lid (made of PE) in an environment of 25 ° C. and 60% RH for 6 hours or more, and the container was moved to an environment of −15 ° C. immediately after closing the lid. It was visually confirmed whether condensation had formed on the bottom of the container when 5 minutes had elapsed from the movement, but no condensation had occurred.
　（参考例）
　上記作製した２つの吸放湿部材を、上記容器内の開口近傍の側面（内側面）に対して、各々の一方の長辺が上記開口から約０．２ｍｍ離間する位置となり、かつ各々の長辺方向が容器の周方向となるように、また、互いに重複しないように、取り付けた。取り付けには、基材の粘着剤層を使用した。次に、２５℃及び６０％ＲＨの環境下に６時間以上、蓋（ＰＥ製）をしない状態で容器を放置した後、蓋を閉めてすぐに－１５℃の環境に容器を移動させた。移動から５分が経過した時点において容器の底面に結露が生じたかを目視により確認したところ、底面には結露が発生していた。 (Reference example)
One of the long side of each of the two moisture absorbing and desorbing members manufactured above is located at a distance of about 0.2 mm from the opening with respect to the side surface (inner side surface) near the opening in the container, and It was attached so that the side direction would be the circumferential direction of the container and not overlap each other. The adhesive layer of the substrate was used for attachment. Next, the container was left without a lid (made of PE) in an environment of 25 ° C. and 60% RH for 6 hours or more, and the container was moved to an environment of −15 ° C. immediately after closing the lid. It was visually confirmed whether condensation had occurred on the bottom of the container when 5 minutes had passed from the movement, and it was found that condensation had occurred on the bottom.
　本発明は、その意図及び本質的な特徴から逸脱しない限り、他の実施形態に適用しうる。この明細書に開示されている実施形態は、あらゆる点で説明的なものであってこれに限定されない。本発明の範囲は、上記説明ではなく添付したクレームによって示されており、クレームと均等な意味及び範囲にあるすべての変更はそれに含まれる。 The present invention can be applied to other embodiments without departing from the intention and essential characteristics. The embodiments disclosed in this specification are illustrative in all respects and not limiting. The scope of the present invention is indicated not by the above description but by the appended claims, and all the modifications that are equivalent in meaning and scope to the claims are included therein.
　本発明の気体処理用部材は、例えば、電子機器、精密機器、電子部品等の内部に取り付けて、当該内部の空間の気体処理に使用できる。 The gas processing member of the present invention can be attached to, for example, the inside of an electronic device, a precision device, an electronic component or the like, and used for gas processing of the space in the inside.
　１，１Ａ，１Ｂ，１Ｃ，１Ｄ，１Ｅ，１Ｆ，１Ｇ，１Ｈ，１Ｉ　気体処理用部材
　２　基材
　３　気体処理層
　４　保護層
　１１　接合部
　２１　ベースフィルム
　２２　接合部
　２３　端部
　２４　端部
　３１　カメラ
　３２　ボディ
　３３　カメラレンズ
　３４　開口
　３５　撮像素子
　３６　回路基板
　３７　外部モニタ
　３８　電子ファインダー
　３９　ファインダー窓
　４０，４１，４２　レンズ
　４３　筐体
　４４　筐体
　４５，４６　光
　１０１　支持材
　１０２　フッ素樹脂フィルム
　１０３　処理剤 1, 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I Gas treatment members 2 base material 3 gas treatment layer 4 protective layer 11 bonding portion 21 base film 22 bonding portion 23 end portion 24 end portion 31 camera Reference Signs List 32 body 33 camera lens 34 opening 35 image pickup element 36 circuit board 37 external monitor 38 electronic finder 39 finder window 40, 41, 42 lens 43 housing 44 housing 45, 46 light 101 support material 102 fluoro resin film 103 treatment agent

Claims (10)

  1. 　両面粘着テープから構成される基材と、前記基材上に配置された気体処理剤と、前記気体処理剤を覆うように前記基材上に配置された、通気性を有する保護層と、を備え、
    　前記保護層は、前記両面粘着テープの粘着剤層に接合された接合部を有し、
    　前記気体処理剤は、前記接合部に囲まれた領域における前記両面粘着テープの前記粘着剤層と前記保護層との間の空間に配置されている、気体処理用部材。     A substrate composed of a double-sided adhesive tape, a gas treating agent disposed on the substrate, and a breathable protective layer disposed on the substrate so as to cover the gas treating agent; Equipped
    The protective layer has a joint portion bonded to the pressure-sensitive adhesive layer of the double-sided pressure-sensitive adhesive tape,
    The member for gas treatment, wherein the gas treatment agent is disposed in a space between the pressure-sensitive adhesive layer of the double-sided pressure-sensitive adhesive tape and the protective layer in a region surrounded by the bonding portion.
  2. 　前記気体処理剤が、吸湿剤及び／又は吸放湿剤を含む請求項１に記載の気体処理用部材。 The member for gas treatment according to claim 1, wherein the gas treatment agent contains a hygroscopic agent and / or a hygroscopic agent.
  3. 　前記吸放湿剤が、吸放湿性を有するアクリル繊維を含む請求項２に記載の気体処理用部材。 The member for gas treatment according to claim 2, wherein the moisture absorbent contains an acrylic fiber having moisture absorbent property.
  4. 　前記気体処理剤が、前記保護層を経て外部から前記空間に透過した物質の吸収により膨張する請求項１～３のいずれかに記載の気体処理用部材。 The gas processing member according to any one of claims 1 to 3, wherein the gas processing agent expands due to absorption of a substance which has permeated the space from the outside through the protective layer.
  5. 　前記保護層が、ポリテトラフルオロエチレン（ＰＴＦＥ）多孔質膜を含む請求項１～４のいずれかに記載の気体処理用部材。 The gas processing member according to any one of claims 1 to 4, wherein the protective layer comprises a polytetrafluoroethylene (PTFE) porous membrane.
  6. 　前記保護層が、少なくとも１つの面内方向に加えられた５Ｎ／１０ｍｍの引張応力に対して、当該方向に５％以上の引張伸びを示す請求項１～５のいずれかに記載の気体処理用部材。 The gas processing system according to any one of claims 1 to 5, wherein said protective layer exhibits a tensile elongation of 5% or more in said direction with respect to a tensile stress of 5 N / 10 mm applied in at least one in-plane direction. Element.
  7. 　筐体を備え、
    　請求項１～６のいずれかに記載の気体処理用部材が前記筐体の内部に収容された機器。     Equipped with a housing
    An apparatus in which the gas processing member according to any one of claims 1 to 6 is housed inside the housing.
  8. 　前記気体処理用部材が、前記筐体の内部に位置する表面に対して、前記両面粘着テープにおける前記気体処理剤が配置されている側の面とは反対側の面の粘着剤層により取り付けられている請求項７に記載の機器。 The gas processing member is attached to a surface located inside the housing by a pressure-sensitive adhesive layer on the surface of the double-sided pressure-sensitive adhesive tape opposite to the surface on which the gas processing agent is disposed. The device according to claim 7.
  9. 　前記気体処理用部材が、前記筐体の内部における結露を防ぐべき部位又は当該部位の近傍に取り付けられている請求項７又は８に記載の機器。 The device according to claim 7, wherein the gas processing member is attached to a portion of the inside of the housing to prevent condensation or in the vicinity of the portion.
  10. 　電子機器又は光学機器である請求項７～９のいずれかに記載の機器。 The device according to any one of claims 7 to 9, which is an electronic device or an optical device.
PCT/JP2018/042529 2017-11-17 2018-11-16 Gas processing member WO2019098336A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-222251 2017-11-17
JP2017222251 2017-11-17

Publications (1)

Publication Number Publication Date
WO2019098336A1 true WO2019098336A1 (en) 2019-05-23

Family

ID=66539709

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/042529 WO2019098336A1 (en) 2017-11-17 2018-11-16 Gas processing member

Country Status (3)

Country Link
JP (1) JP7016788B2 (en)
TW (1) TW201924767A (en)
WO (1) WO2019098336A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110699002A (en) * 2019-10-15 2020-01-17 苏州优派克电子科技有限公司 Waterproof breathable film for camera module Holder leakage hole and production method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000024648A1 (en) * 1998-10-28 2000-05-04 Donaldson Company, Inc. Pouch assembly for moisture control
JP2003340233A (en) * 2002-05-30 2003-12-02 Japan Gore Tex Inc Moisture absorbent unit and quasi-hermetic container having the unit
JP2007331228A (en) * 2006-06-15 2007-12-27 Japan Gore Tex Inc Stretch composite substrate and drawn porous polytetrafluoroethylene film

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080226534A1 (en) 2007-03-13 2008-09-18 Gidumal Rajan H Adsorbent Articles for Disk Drives
JP2010207663A (en) * 2009-03-06 2010-09-24 Japan Gore Tex Inc Ventilation filter and electric device using the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000024648A1 (en) * 1998-10-28 2000-05-04 Donaldson Company, Inc. Pouch assembly for moisture control
JP2003340233A (en) * 2002-05-30 2003-12-02 Japan Gore Tex Inc Moisture absorbent unit and quasi-hermetic container having the unit
JP2007331228A (en) * 2006-06-15 2007-12-27 Japan Gore Tex Inc Stretch composite substrate and drawn porous polytetrafluoroethylene film

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110699002A (en) * 2019-10-15 2020-01-17 苏州优派克电子科技有限公司 Waterproof breathable film for camera module Holder leakage hole and production method

Also Published As

Publication number Publication date
TW201924767A (en) 2019-07-01
JP2019093384A (en) 2019-06-20
JP7016788B2 (en) 2022-02-07

Similar Documents

Publication Publication Date Title
US10458640B2 (en) Ventilation and humidity-conditioning unit and apparatus
KR102395624B1 (en) Sound-passing membrane, sound-passing membrane member having same, microphone, and electronic device
KR101896367B1 (en) Breathable waterproof sheet
TWI789477B (en) Waterproof components and electronic equipment
KR101624766B1 (en) Ventilation filter and electric device using same
JP4261191B2 (en) Device for reducing moisture present inside a housing including a heat source
JP2010000464A (en) Vent filter and method for manufacturing thereof
WO2016009583A1 (en) Water-resistant member, and electronic apparatus provided with water-resistant member
JP2003320215A (en) Adsorbent molded object and adsorbent unit
JP2012020280A5 (en)
US11534715B2 (en) Dust cover for automotive lamps with excellent moisture control performance
JP2006334537A (en) Aeration member, aeration member kit, ventilation basket using these, and ventilation tank
JP2011519136A (en) Lamp enclosure ventilation system
WO2019098336A1 (en) Gas processing member
US20160325238A1 (en) Moisture permeable filter medium
JPWO2018119398A5 (en)
US11554350B2 (en) Infernal pressure adjustment member and electrical component for transport equipment
JP6219173B2 (en) Agricultural house insulation
JP2004314311A (en) Moisture absorbing and discharging nonwoven fabric structure and moisture conditioning agent using it
US20220159852A1 (en) Member for ventilation hole, method for manufacturing electronic device including member for ventilation hole, and tape for feeding member
JP2013202506A (en) Hygroscopic sheet, and sheet-like desiccant
JPH0120675B2 (en)
CN115279855A (en) Protective cover member and member supply sheet
JP6522039B2 (en) Protective film-attached film piece, method of removing protective film of protective film-attached film piece, and method of manufacturing electric device
JP2001198429A (en) Fluoroplastic resin composite member covered with peelable moisture impermeable film

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18879277

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18879277

Country of ref document: EP

Kind code of ref document: A1