WO2022044847A1 - マスク用耳掛け部、マスク、マスク用耳掛け部の製造方法、及びマスクの製造方法 - Google Patents
マスク用耳掛け部、マスク、マスク用耳掛け部の製造方法、及びマスクの製造方法 Download PDFInfo
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- WO2022044847A1 WO2022044847A1 PCT/JP2021/029799 JP2021029799W WO2022044847A1 WO 2022044847 A1 WO2022044847 A1 WO 2022044847A1 JP 2021029799 W JP2021029799 W JP 2021029799W WO 2022044847 A1 WO2022044847 A1 WO 2022044847A1
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- Prior art keywords
- ear
- mask
- ear hook
- sheet material
- band
- Prior art date
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- 239000000463 material Substances 0.000 claims abstract description 200
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- 101100269850 Caenorhabditis elegans mask-1 gene Proteins 0.000 description 24
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- 239000004677 Nylon Substances 0.000 description 2
- 238000004049 embossing Methods 0.000 description 2
- 239000004750 melt-blown nonwoven Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
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Images
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
- A62B23/02—Filters for breathing-protection purposes for respirators
- A62B23/025—Filters for breathing-protection purposes for respirators the filter having substantially the shape of a mask
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
- A41D13/1161—Means for fastening to the user's head
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
- A62B18/084—Means for fastening gas-masks to heads or helmets
Definitions
- the present invention relates to a mask ear hook, a mask, a method for manufacturing a mask ear hook, and a method for manufacturing a mask.
- the wearer As a configuration of the mask to be worn on the face, the wearer to hold the mask body that covers the wearer's face at least partially and the pair of ear hooks connected to the mask body, that is, the mask body at the wearing position. It is known to have a member that can be hung on each ear.
- a sheet-shaped one is known as an ear hook used for a mask.
- the mask disclosed in Patent Document 1 includes a single-sheet-shaped ear hook sheet extending on the same plane with both ear hook portions connected to each other at the connecting portion.
- Patent Document 1 describes that the ear hook portion is made of an elastic spunbonded non-woven fabric or the like.
- the portion extending in the left-right direction of the face is easily extended during the wearing operation.
- the portion of the ear hook portion located behind the ear when worn (during wearing) is not significantly stretched and deformed because the state of being in contact with the skin behind the ear can be stably maintained. Therefore, it is desirable that the extension characteristics or deformation characteristics of the sheet-shaped ear hook portion differ depending on the location from the viewpoint of improving the ease of wearing and the wearing feeling of the ear hook portion.
- such studies have not been made in the past.
- One aspect of the present invention in view of the above is an object of providing a mask ear hook portion with improved ease of wearing and wearing feeling.
- One aspect of the present invention is a first surface sheet material and a second surface sheet material bonded by a plurality of joints to both sides of the stretchable member and the stretchable member in a stretched state, respectively.
- An ear hook for a mask formed of a material having and It has an upper transition portion extending to and a lower transition portion that transitions from the base portion to the back of the ear on the lower side, and the number of the plurality of joints in the back of the ear per unit area is determined. The number is larger than the number of the plurality of joints in at least one of the upper transition portion and the lower transition portion per unit area.
- FIG. 1 is a cross-sectional view taken along the line II of FIG. It is a top view after each pair of ear hooks is opened sideways at the time of use.
- FIG. 4 is a sectional view taken along line II-II of FIG. It is sectional drawing of the ear hook part by one embodiment of this invention. It is a top view of the ear hook part by one embodiment of this invention. It is an enlarged view of the joint part.
- the mask in this embodiment may be a mask capable of covering the wearer's face, more specifically, at least the wearer's nose and mouth.
- the mask according to this embodiment may have a function of preventing foreign matter from reaching the face and preventing droplets generated from the wearer from scattering, and is also called a sanitary mask or a surgical mask. ..
- FIG. 1 shows a plan view of the mask 1.
- FIG. 1 is a view of the mask 1 viewed from the outside, that is, from the side exposed to the outside, which does not face the face when worn.
- FIG. 2 shows a plan view of the mask 1 as viewed from the inside (face side).
- FIG. 3 shows a sectional view taken along line II of FIG.
- the mask 1 As shown in FIG. 1, the mask 1 according to the present embodiment is arranged in front of the wearer's face at the time of wearing, and is coupled to the mask body 10 which can mainly cover the nose and mouth of the wearer and the mask body 10. It includes a pair of ear hooks 20a and 20a.
- the mask main body 10 has a vertical direction (vertical direction) D1 corresponding to the vertical direction of the wearer's face at the time of wearing, and a horizontal direction (horizontal direction) D2 orthogonal to the vertical direction D1.
- the mask body 10 has a rectangular plan view shape having long sides in the left-right direction D2, but the plan view shape of the mask body 10 is not limited to the one shown in the figure.
- the mask main body 10 has a pleated structure 15 formed by a plurality of folds arranged side by side in the vertical direction D1.
- the folds of the pleated structure 15 are formed by folding the sheet constituting the main body 10 along a folding line along the left-right direction D2. Then, in a state where a plurality of folds are formed, the side portions (ends of D2 in the left-right direction) of the mask main body 10 are joined and fixed by crimping or the like.
- the folds of the pleated structure 15 are widened in the vertical direction D1 so that the center of the horizontal direction D2 is curved so as to protrude toward the outer surface side of the mask 1 so as to match the three-dimensional shape of the face. Can be transformed into a different shape.
- the specific configuration of the pleated structure 15 is not particularly limited, and may be a known configuration formed on the mask body.
- the mask body 10 may have a multilayer structure in which a plurality of layers are laminated.
- the structure may include at least three layers in which an intermediate layer having an enhanced function of collecting foreign substances (dust, pollen, bacteria, viruses, etc.) is sandwiched between an outer layer and an inner layer.
- Each layer constituting the mask main body 10 preferably includes a fiber-containing layer such as a non-woven fabric, a woven fabric, or a knitted fabric, and more preferably contains a non-woven fabric.
- the non-woven fabric include spunbonded non-woven fabric, spunlaced non-woven fabric, meltblown non-woven fabric, air-through non-woven fabric, point-bonded non-woven fabric and the like.
- the fiber constituting the fiber-containing layer is preferably a resin fiber, and examples of the resin type of the resin fiber include polyethylene, polypropylene, polyethylene terephthalate, and nylon.
- the basis weight of the outer layer and the inner layer may be 10 to 50 g / m 2 , preferably 15 to 50 g / m 2 .
- the basis weight of the intermediate layer having a high foreign matter collecting property is preferably 10 to 100 g / m 2 , and more preferably 15 to 50 g / m 2 .
- the pair of ear hooks 20a and 20a may each have an annular shape (or a closed band shape) in a plan view, or may have a shape including a ring.
- the ear hook 20a can be hung on the inside of the ring of the ear hook 20a, that is, the wearer's ear is inserted into the opening 29 at the center of the ear hook 20a.
- the pair of ear hooks 20a and 20a are formed as a single sheet or a continuous ear hook sheet 20 separably connected to each other at the center of the left-right direction D2. It's okay.
- the "single sheet” refers to a form composed of one continuous sheet
- the "sheet” is a concept that may include a laminated body in which a plurality of layers are laminated. Since the pair of ear hooks 20a and 20a are in the form of a sheet, when the ear hook 20a is hung on the ear, it is on the back of the ear (or the back of the ear), that is, on the skin and / or the back of the earlobe behind the ear.
- the pair of ear hooks 20a and 20a are in the form of a single sheet (because they are composed of the ear hook sheets 20), the pair of ear hooks 20a and 20a can be positioned at the same time at the time of manufacturing. Therefore, it is easy to manufacture masks.
- the ear hook sheet 20 is configured to be able to form a pair of ear hooks 20a, 20a separated by breaking at a predetermined position at the start of use. More specifically, in the form of FIG. 1, the pair of ear hook portions 20a and 20a are connected by the coupling portion 28.
- the bonding form of the bonding portion 28 is not particularly limited, but it is preferably a bond that can be separated by pulling with a normal force of the user. For example, it may be formed as a perforation as shown in FIG. Further, the joint portion 28 may be formed by reducing the thickness of the sheet or by other means such as weakening the boundary between the pair of ear hook portions 20a and 20a or making it easier for stress to be applied. ..
- a pair of single sheet-shaped ear hooks 20a, 20a, or ear hook sheets 20 are arranged so as to be overlapped with the mask main body 10.
- the ear hook sheet 20 may have a shape and a size that does not protrude from the mask main body 10 at least in the left-right direction D2 in a plan view.
- the length of the ear hook sheet 20 in the left-right direction D2 can be 70 to 95% of the length of the mask 1 in the left-right direction D2.
- the length of one ear hook portion 20a in the left-right direction D2 may be 60 to 90 mm, preferably 65 to 85 mm.
- the pair of ear hook portions 20a and 20a may be directly or indirectly coupled to the side portions (left-right direction D2 end portions) of the main body 10, respectively. That is, the outer portions of the pair of ear hooks 20a and 20a in the left-right direction D2 are coupled to the main body 10, and the other portions are not coupled to the main body 10.
- the user releases the coupling between the pair of ear hook portions 20a and 20a at the joint portion 28 before wearing the mask 1, and the ear hook portion 20a is started.
- 20a are separated from each other (also referred to as separation operation), and the portions of the ear hook portions 20a and 20a that are not joined to the main body 10 are opened laterally in the left-right direction D2 (also referred to as unfolding operation).
- the pair of ear hook portions 20a and 20a may be connected to both side portions of the mask main body 10 via the sheet-shaped auxiliary materials 30 and 30, respectively.
- the auxiliary material 30 By interposing the auxiliary material 30 in the connection between the ear hook portion 20a and the mask main body 10, the mask 1 can be formed without directly connecting the ear hook portion 20a and the mask main body 10. Therefore, the bond between the ear hook portion 20a and the auxiliary material 30 and the bond between the mask main body 10 and the auxiliary material 30 can be formed separately in appropriate forms. Further, it is possible to prevent a part of the region of the ear hook portion 20a from being used for fixing to the mask main body 10.
- the ear hook portion 20a can be moved more freely with respect to the mask body 10 as compared with the case where the ear hook portion 20a is directly connected to the mask body 10.
- the position of the ear hook 20a when the 20a is attached to the ear can be set more freely with respect to the ear.
- the mask main body 10 and the sheet-shaped auxiliary material 30 are overlapped and joined at the first side joint portion 50.
- the sheet-shaped ear hook portion 20a and the sheet-shaped auxiliary material 30 are overlapped and joined at the second side portion joining portion 60.
- the auxiliary material 30 may be a sheet-like member extending over the entire vertical direction D1 of the mask 1.
- the length (width) of the auxiliary material 30 in the left-right direction D2 is preferably 15 to 35 mm, although it depends on the size and configuration of the entire mask 1 and the size, shape, and material of the main body 10 and the ear hook portion 20a.
- the basis weight of the auxiliary material 30 may be 5 to 100 g / m 2 .
- the thickness of the auxiliary material 30 may be 100 to 1,000 ⁇ m.
- the auxiliary material 30 may be formed of a non-stretchable or small material, or may be formed of a material having a certain degree of elasticity.
- the auxiliary material 30 may include, for example, a stretchable non-woven fabric.
- the auxiliary material 30 preferably has elasticity at least in the left-right direction D2, but the elasticity of the auxiliary material 30 is preferably smaller than the elasticity of the ear hook portion 20a.
- the auxiliary material 30 may be formed of a material whose shape can be irreversibly deformed when a force is applied.
- the first side joint 50 and the second side joint 60 are means for joining the facing surfaces of the members, for example, by applying pressure and / or heat, for example, heat seal, ultrasonic seal, non-heating. It can be formed by embossing. Of these, it is preferable to use a heat seal because reliable bonding is possible.
- the left-right direction D2 length of the ear-hanging portion sheets 20 constituting the pair of ear-hooking portions 20a, 20a is shorter than the left-right direction D2 length of the mask 1.
- the outer end 21 of the left-right direction D2 of the ear hook portion 20a and the outer end 11 of the left-right direction D2 of the main body 10 can be displaced, and the left-right direction D2 end of the mask main body 10 not covered by the ear hook portion 20a.
- Auxiliary material 30 can be attached near the portion.
- the user can pinch or grasp the pair of ear hooks 20a, 20a with their respective hands and pull them in opposite directions. Thereby, first, the bond of the separable connecting portion 28 can be released. If the connecting portion 28 is composed of perforations formed along the boundary line between the pair of ear hook portions 20a and 20a, the perforations are broken and both ear hook portions 20a and 20a are bordered. Can be separated along. After that, the user can open the pair of ear hooks 20a and 20a to the outside (illustrated by the arrow) in the left-right direction D2 as shown in FIG. 3 while holding the pair of ear hooks 20a and 20a, respectively.
- FIG. 4 shows a state in which the pair of ear hooks 20a and 20a are opened outward from the left-right direction D2 from the state of FIG.
- FIG. 5 shows a sectional view taken along line II-II of FIG.
- the ear hooks 20a and 20a are turned inside out, that is, the main body of the ear hooks 20a and 20a in the state before the start of use. The surface facing the 10 is exposed.
- the mask body 10 is attached so that the face side surface of the mask body 10 faces the wearer's face. It is placed on the face of the wearer, and the ear hooks 20a and 20a are hung on the wearer's ears, respectively.
- the pair of ear hooks 20a and 20a (ear hook sheets 20) in the form of a single sheet are arranged so as to overlap the mask main body 10.
- the pair of ear hooks 20a and 20a may be overlapped on either surface of the mask body 10, but it is preferable that the pair of ear hooks 20a and 20a are overlapped on the outer surface of the mask body 10 as shown in the illustrated form.
- the mask 1 when the user wears the mask 1 on himself / herself, the mask 1 is placed on his / her face so that the inner surface of the mask body 10 faces his / her face, and the outer surface of the mask body 10 is pressed with one hand. With the other hand, the coupling of the ear hooks 20a and 20a at the joint 28 is released, and one ear hook 20a is hung on the ear. Then, after changing one hand holding the mask body 10 to the other hand, the other ear hook portion 20a can be hung on the ear with one hand.
- the user holds the pair of ear hooks 20a and 20a by hand, respectively, in the left-right direction D2. Open to the outside.
- the mask 1 is moved to the face of a wearer other than himself, and the mask body 10 is placed at a desired position on the wearer's face.
- the pair of ear hooks 20a and 20a can be hung on the wearer's ears without changing. Therefore, the mask 1 according to the present embodiment can also be suitably used when a person who has difficulty in wearing the mask by himself / herself, such as a child or a sick person, is to wear the mask.
- the user can also have the grips 25 and 25 protruding outward from the rings of the ear hooks 20a and 20a in a plan view.
- the knobs 25 and 25 By handling the ear hooks 20a and 20a by holding the knobs 25 and 25, the mask can be separated and unfolded more hygienically. As shown in FIG. 1, it is preferable that the knob portions 25, 25 project beyond the outer edge of the mask main body 10, and particularly beyond the lower end of the mask main body 10.
- the main body 10 may be formed with a mark 18 that enables distinction between the front and back surfaces (outer surface and inner surface) of the main body 10 by embossing, printing, sewing, or the like.
- the form of the mark 18 is not limited as long as it can be visually recognized by the user.
- the mark 18 may be a character, a number, a symbol, a figure, a logo, or the like. If the mark 18 is a character, the side on which the user can read the character correctly can be recognized as the outer surface.
- FIG. 6A shows a partially enlarged cross-sectional view of the material constituting the ear hook portion 20a or the ear hook portion sheet 20 cut along the left-right direction D2.
- the material constituting the ear hook portion 20a or the ear hook portion sheet 20 may be a sheet in which a plurality of layers are laminated.
- the material includes the stretchable material (stretchable film) 5, and the first surface sheet is on the first surface, which is one side of the stretchable material (stretchable film) 5.
- the second surface sheet material 3 is arranged on the second surface, which is the surface opposite to the first surface of the material 2.
- the elastic member can be extended in at least one direction by applying a tensile force, and the original length (natural length) by releasing the applied tensile force (without applying an external force). ) Is a member having the property of returning to.
- the stretchable film 5 is used as the stretchable member in this example.
- the material of the elastic film 5 include polyolefins such as polyethylene and polypropylene, polyurethane and the like.
- the stretchability of the stretchable film 5 is preferably one having a maximum stretch ratio of 3.5 to 4.0 times the natural length as measured by a tensile tester.
- the elastic film 5 may have a function of allowing moisture to pass through.
- a thread-like stretchable body aggregate in which a plurality of thread-like stretchable bodies (or thread-like elastic bodies) such as rubber threads are juxtaposed may be provided.
- it is an elastic member in the form of a film, that is, if it is in the form of a film that is a flat molded body having a substantially uniform thickness, high elasticity or extensibility can be obtained and it is easy to handle at the time of manufacture. It is preferable in that it is.
- the materials shown in FIG. 6A have a first surface sheet material and a second surface sheet material on both sides (first surface and second surface) of the elastic film in a stretched state.
- the surface sheet material is joined by a plurality of joint portions 40, 40, ....
- a tensile external force T is applied to the stretchable film 5 to stretch the stretchable film 5 from its natural length, and the stretchable film 5 is stretched from its natural length.
- the first surface sheet material 2 and the second surface sheet material 3 in the natural state which are not shrunk in the state, are intermittently joined at a plurality of joint portions 40, 40, ... (Detailed later). Then, by releasing the tensile external force T and relaxing the elastic film 5, the material in the natural state shown in FIG. 6A can be obtained.
- the state of the material shown in FIG. 6A is a natural state, that is, a state in which no external force is applied (a state having a natural length). In this state, wrinkles (folds) are formed on the first surface sheet material 2 and the second surface sheet material 3, which were flat when the tensile external force T shown in FIG. 6B was applied. , It is wavy when viewed in cross section (FIG. 6 (a)). This is because when the length of the elastic film 5 returns to the natural length, the portions other than the portions joined by the plurality of joint portions 40, 40, ... Are raised so as to be separated from the elastic film 5. ..
- the stretch direction (extension direction) of the elastic film 5 is set to be along the left-right direction D2 of the mask. As a result, a plurality of wrinkles extending substantially along the vertical direction D1 of the mask 1 are formed on the surface of the ear hook portion 20a (ear hook portion sheet 20).
- the first surface sheet material 2 and the second surface sheet material 3 may be the same or different. Further, it is preferable that both the first surface sheet material 2 and the second surface sheet material 3 are fiber structures.
- the fiber structure include non-woven fabrics, woven fabrics, knitted fabrics, etc. Among them, non-woven fabrics are preferable because they have good touch and breathability and contribute to improvement of wearing feeling.
- the non-woven fabric include air-through non-woven fabric, spunbond non-woven fabric, spunlace non-woven fabric, needle punch non-woven fabric, chemical bond non-woven fabric and the like. Of these, a spunbonded non-woven fabric having no fluff and high strength, a soft air-through nonwoven fabric, and the like can be appropriately selected.
- the fiber contained in the nonwoven fabric is preferably a resin fiber, and examples of the resin type of the resin fiber include polyethylene, polypropylene, polyethylene terephthalate, and nylon.
- the basis weight of the non-woven fabric may be 5 to 50 g / m 2 , and particularly preferably 8 to 25 g / m 2 .
- the ear hook portion 20a of the present embodiment is made of a material in which the elastic film 5 is covered on both sides by the first surface sheet material 2 and the second surface sheet material 3, the elastic film 5 and the skin are attached to each other when the mask is attached. Direct contact can be avoided and the wearing feeling can be improved.
- the above-mentioned joint portions 40, 40, ... Can be formed by using a fusion means such as an ultrasonic seal or a heat seal, or an adhesive or the like, but since more reliable bonding is possible, fusion is possible. It is preferably formed by means, especially an ultrasonic seal.
- the joint portion (welded portion) 40, In 40, ... All three layers are welded to each other and integrated. Further, depending on the formation conditions of the fused portion, a through hole may be formed in the joint portion. In that case, the air permeability of the ear hook portion 20a (ear hook portion sheet 20) can be improved.
- FIG. 7 shows a plan view of the ear hook portions 20a and 20a (ear hook portion sheet 20) according to the present embodiment.
- the ear hook portion 20a may be annular (or closed band-shaped) in a plan view, or may have a shape including a ring.
- the ear hook portion 20a is fixed to the mask body 10 (in the form of FIG. 1 and is coupled to the mask body 10 via an auxiliary material), and the ear back arrangement located behind the wearer's ear.
- the base portion 22 and the back-ear arrangement portion 24 extend substantially along the vertical direction D1 and face each other. Further, the upper transition portion 23 and the lower transition portion 26 extend substantially along the left-right direction D2 and face each other.
- the shape of the ring contained in the ear material 20a is approximately a rectangular ring, but may be approximately circular or elliptical.
- the ear material 20a has a shape in which there are three places where the direction is significantly changed along the circumferential direction of the ring (that is, a triangular ring), or a shape in which there are five or more (that is, a polygonal ring other than a rectangular ring). You may.
- the ear hooks 20a and 20a are made of the above-mentioned material, that is, the stretchable member 5, and a plurality of joints 40, 40, ... It is formed of a material having a first surface sheet material 2 and a second surface sheet material 3 joined to each other.
- the distribution of the plurality of joints 40, 40, ... Is not uniform.
- the ear hook portions 20a, 20a have sparse distribution regions R1 A , R1 B (sometimes collectively referred to as R1) in which the joint portions 41, 41, ... Are roughly distributed, and the joint portions 42, It has a dense distribution region R2 in which 42, ... Are more densely distributed.
- the sparse distribution regions R1 A and R1 B preferably have the same configuration.
- FIG. 8A shows a partially enlarged plan view of the sparsely distributed regions R1 A and R1 B. Further, FIG. 8B shows a partially enlarged plan view of the dense distribution region R2.
- the densities of the formed joints 42, 42, ... That is, the number N2 per unit area is the sparse distribution region R1 A , R1.
- the density of the joints 41, 41, ... Formed in B is larger than the density, that is, the number N1 per unit area.
- the number per unit area is the number measured in the maximum extended state of the ear hook portion 20a or the ear hook portion sheet 20.
- the maximum stretched state refers to a state in which the ear hook portion 20a or the ear hook portion sheet 20 is stretched so that the surface sheet material has a natural length, that is, a state in which wrinkles of the surface sheet material are not substantially confirmed.
- the ear back arrangement portion 24 has a dense distribution region R2, the upper transition portion 23 has an upper sparse distribution region R1 A , and the lower transition portion 26 has a lower sparse distribution region 26. It may have a distribution region R1 B. Further, the back of the ear arrangement portion 24 is composed of a dense distribution region R2, the upper transition portion 23 is composed of an upper sparse distribution region R1 A , and the lower transition portion 26 is composed of a lower sparse distribution region R1 B. good. Therefore, the number of joints in the ear back arrangement portion 24 per unit area is larger than the number of joints in the upper transition portion 23 per unit area, and is larger than the number of joints in the lower transition portion 26 per unit area.
- the base 22 also has the dense distribution region R2, but the base 22 does not necessarily have the dense distribution region R2.
- the band-shaped dense distribution region R2 can be continuously formed along the transport direction (corresponding to the left-right direction D2) of the ear hook sheet band 20A to be the ear hook sheet 20 (FIGS. 9, 10). See below).
- the sparsely distributed regions R1 A and R1 B can also be formed in a continuous strip shape along the transport direction on both sides of the strip-shaped dense distribution region R2, respectively.
- the joint portion is formed more densely in the ear back arrangement portion 24 means that the first surface sheet material 2, the elastic member 5, and the second surface sheet material 3 are all fixed in the ear back arrangement portion 24. It means that there are more places per unit area. Therefore, the ear back arrangement portion 24 has a relatively large resistance to tension and is difficult to be stretched. Since the back of the ear arrangement portion 24 is usually attached to the back of the ear, that is, the skin behind the ear and / or the back surface of the earlobe in a surface contact state, the skin is formed when the back of the ear arrangement portion 24 itself is greatly extended and deformed. There is a possibility that a feeling of strangeness may occur due to friction with. However, according to the above configuration of the present embodiment, such a feeling of strangeness can be reduced.
- the joint portion is formed more densely, the first surface sheet material 2, the elastic member 5, and the second surface sheet material 3 are less likely to be peeled off, and the strength of the ear back arrangement portion 24 is also increased. Therefore, even if a relatively large force is applied to the vicinity of the joint portion 28 during the separation operation of the pair of ear hook portions 20a and 20a described above, the structure of the material is not easily broken.
- the joint points are formed more sparsely, which is the first surface sheet material 2, expansion and contraction.
- the number of places where the sex member 5 and the second surface sheet material 3 are fixed together is relatively small per unit area. Therefore, the upper transition portion 23 and the lower transition portion 26 have relatively small resistance to tension and are easily stretched. Therefore, during the wearing operation, the upper transition portion 23 and the lower transition portion 26 can be extended in the left-right direction D2 with a relatively small force, and the operation of hooking the ear hook portions 20a and 20a on the ears can be smoothly performed. ..
- the cutting position is used. Due to the compressive stress acting in the surface direction, the edge portion of the elastic film 5 is more likely to be drawn inward than the edge portion of the first surface sheet material 2 and the edge portion of the second surface sheet material 3. In that case, since the first surface sheet material 2 and the second surface sheet material 3 protrude from the edge, it may be easily peeled off from the edge.
- the edge edge easily hits the skin, so that the possibility of peeling may be higher than other portions of the ear hook portion 20a. Therefore, since the ear back arranging portion 24 has a dense distribution region R2 having a large number of joint portions 40, 40, ... The arrangement portion 24 is less likely to break. Further, the state where the first surface sheet material 2 and the second surface sheet material 3 protrude from the edge may impair the appearance, but the elastic film 5 is suppressed from being pulled in at the conspicuous ear back arrangement portion 24. If possible, the appearance of the ear hooks 20a, 20a, and eventually the mask 1 as a whole can be improved.
- the number N 2 of the joint portions 42, 42, ... Per unit area in the dense distribution region R2 may be preferably 2 to 50 pieces / cm 2 , and more preferably 8 to 34 pieces / cm 2 .
- the number N 1 of the joint portions 41, 41, ... Per unit area in the sparse distribution region R1 may be 1 to 20 pieces / cm 2 , more preferably 5 to 15 pieces / cm 2 .
- N 1 may be preferably 1.5 to 2.5, more preferably 1.75 to 2.25.
- the area S2 of each of the joints 42 in the dense distribution region R2 is larger than the area S1 of each of the joints 41 in the sparse distribution region R1. It may be smaller.
- the back of the ear arrangement portion 24 has a dense distribution region R2
- the upper transition portion 23 has an upper sparse distribution region R1 A
- the lower transition portion 26 has a lower sparse distribution region R1 B.
- the area of each one of the joints in the ear back arrangement portion 24 may be smaller than the area of each one of the joints in the upper transition portion 23 and smaller than the area of each one of the joint portions in the lower transition portion 26. ..
- the area S2 of each of the joints 42 in the dense distribution region R2 is small in this way, the deformation that bends or bends the entire dense distribution region R2 can be performed more freely. Since the back of ear arrangement portion 24 has the dense distribution region R2, it becomes easier to deform the back of the ear arrangement portion 24 to match the shape of the portion behind the user's ear and / or the shape of the ear. .. In addition, if the area of each joint is excessively large, the user may feel hardness when touching the skin, which may lead to discomfort. Therefore, the ear pressed against the back side of the ear and / or the back side of the ear. By reducing the area of the area S2 of each of the joint portions 42 in the back arrangement portion 24, discomfort and discomfort can be reduced.
- the fact that the area of the joint is small means that the circumference per area of the joint is long.
- the peeling starts when the joints are particularly strongly joined. Since it is the peripheral edge of the portion, the long peripheral length per area of the joint portion increases the resistance to mutual initial peeling of the first surface sheet material 2, the elastic member 5, and the second surface sheet material 3. Become. Therefore, the ear back arrangement portion 24 including the dense distribution region R2 can be configured to be more resistant to peeling and more durable.
- the area S2 of each one of the joints 42 in the dense distribution region R2 may be preferably 0.02 to 0.72 mm 2 , more preferably 0.08 to 0.45 mm 2 .
- the area S 1 of each of the joint portions 41 in the sparse distribution region R1 may be preferably 0.2 to 0.8 mm 2 , more preferably 0.3 to 0.6 mm 2 .
- the ratio value ( S2 / S1) of the area S2 of each one of the joints 42 in the dense distribution region R2 to the area S1 of each one of the joints 41 in the sparse distribution region R1 is preferably 0. It may be 1 to 0.9, more preferably 0.25 to 0.75.
- the joint portions 41, 41 in the sparse distribution region R1 It may be smaller than the pitch p x 1 in the left-right direction D2. Since the back of the ear arrangement portion 24 has a dense distribution region R2, the upper transition portion 23 has an upper sparse distribution region R1 A , and the lower transition portion 26 has a lower sparse distribution region R1 B.
- the pitch of the joint portion in the left-right direction D2 of the ear back arrangement portion 24 is smaller than the pitch of the joint portion in the left-right direction D2 of the upper transition portion 23 and smaller than the pitch of the joint portion in the lower transition portion 26 in the left-right direction D2. You may be.
- the pitch of the joints in the left-right direction D2 is small, the distance between the first surface sheet material 2, the elastic member 5, and the second surface sheet material 3 is small in the left-right direction D2. Since the ear hooks 20a and 20a (ear hook seats 20) are mainly stretched in the left-right direction D2, the ease of stretching the ear back arrangement portion 24 and the upper transition portion 23 and the lower portion are affected by the difference in pitch in the left-right direction D2. The ease of stretching of the side transition portion 26 can be further different, the wearing feeling at the time of mounting can be improved, and the effect of facilitating the mounting operation can be enhanced.
- the pitch p x2 of the joint portions 42, 42, ... In the dense distribution region R2 in the left-right direction D2 is also smaller than the pitch p x1 of the joint portions 41, 41, ... In the sparse distribution region R1 in the left-right direction D2. good.
- the pitch of the joint portion in the left-right direction D2 of the ear back arrangement portion 24 is smaller than the pitch of the joint portion in the left-right direction D2 of the upper transition portion 23 and smaller than the pitch of the joint portion in the lower transition portion 26 in the left-right direction D2. It may be.
- the pitch p x 2 of the joint portion 42 in the left-right direction D2 in the dense distribution region R2 may be preferably 0.3 to 13.5 mm, more preferably 1.25 to 7.5 mm.
- the pitch px1 in the left-right direction of the joint portion 41 in the sparse distribution region R1 may be preferably 3 to 15 mm, more preferably 5 to 10 mm.
- the ratio value (p x2 / px1 ) of the pitch p x2 in the left-right direction of the joint portion 42 in the dense distribution region R2 to the pitch p x1 in the left-right direction of the joint portion 41 in the sparse distribution region R1 is preferably 0. It may be 1 to 0.9, more preferably 0.25 to 0.75.
- the pitch is a pitch measured in the maximum extended state of the ear hook portion 20a or the ear hook portion sheet 20.
- the pitch py2 of the joints 42, 42, ... In the vertical direction D1 in the dense distribution region R2 is smaller than the pitch py1 of the joints 41, 41, ... In the sparse distribution region R1 in the vertical direction D1. It may be larger, it may be larger, or it may be about the same. However, if the pitch py2 of the joints 42, 42, ... In the vertical direction D1 in the dense distribution region R2 is smaller than the pitch py1 of the joints 41, 41, ... In the sparse distribution region R1 in the vertical direction D1, it is dense. It is preferable from the viewpoint that the joint portions 42, 42, ... In the distribution region R2 can be formed more densely.
- the joints 40, 40, ... are preferably arranged in a staggered manner in a plan view, but may be in a grid pattern. Further, the arrangement may be neither staggered nor lattice-shaped. For example, as shown in FIG. 8C, rows of joints arranged along the left-right direction D2 are arranged side by side in the vertical direction D1, and adjacent rows are arranged in the left-right direction D2 and in the left-right direction D2. The pitch may be slightly shifted by a distance smaller than 1/2 of the pitch p x 2 .
- the shape of the joint portion 40 may be circular (may be FIG. 8A, or elliptical) (FIG. 8B and FIG. 8B) regardless of whether the joint portion 40 is a sparse distribution region R1 or a dense distribution region R2. It may be (c)) or another shape, for example, a polygon. Also, as shown in FIGS. 8A and 8B, the sparse distribution region R1 (R1 A , R1 B ) may be used. ) May be different from the shape of the joint portion 42 of the dense distribution region R2.
- the shape of the joint portion 42 of the dense distribution region R2 is an ellipse having a major axis in the vertical direction D1. Since the length of the joint portion 42 in the left-right direction D2 can be shortened, the distance between the wrinkles formed on the material can be narrowed, and the height of the wrinkles can be made smaller, so that the appearance can be improved.
- the total area of the plurality of joints 40, 40, ... Can be 1 to 20% of the area of the ear hooks 20a, 20a (ear hook sheet 20).
- the ratio of the areas of the plurality of joint portions 40, 40, ... Is a value measured in the maximum extended state of the ear hook portion 20a or the ear hook portion sheet 20.
- FIG. 9 shows a schematic view of the mask manufacturing apparatus 300.
- the mask manufacturing device 300 is provided with an ear hook manufacturing device 100 upstream of the mask manufacturing device 300, followed by a mask member combining device 200 that combines the manufactured mask ear hook and other members of the mask. Has been done.
- the ear hook manufacturing apparatus 100 forms the stretchable film band supply means 123 and the first surface sheet material 2 for supplying the stretchable film band (stretchable member band) 5A for forming the stretchable film 5.
- First surface sheet material band supply means 121 for supplying the surface sheet material band 2A, and second surface sheet material band supply for supplying the second surface sheet material band 3A forming the second surface sheet material 3.
- the means 122 is provided.
- a long material that is, an elastic film band 5A, a first surface sheet material band 2A, and a second surface sheet material band 3A is supplied from each supply means, and subsequently, one surface of the elastic film band 5A ( The first surface sheet material band 2A is overlapped on the first surface), and the second surface sheet material band 3A is overlapped on the other surface (second surface) to form the multilayer structure 6A.
- the multilayer structure 6A is transported in the transport direction Dt.
- the stretchable film band 5A is conveyed in a state of being stretched in the transport direction Dt, that is, in a state in which a tensile force (tension) is applied in the transport direction Dt.
- the degree of elongation of the stretchable film band 5A is controlled by the feeding speed of the stretchable film band supply means 123 and the transport means (not shown).
- the stretchable film band 5A is preferably stretched so as to be, for example, 1.5 to 4 times, preferably about 2 to 3 times, the natural length.
- the first surface sheet material band 2A and the second surface sheet material band 3A are conveyed in a state of having a natural length (in a state of not being pulled). Therefore, the surfaces of the first surface sheet material band 2A and the second surface sheet material band 3A laminated on each surface of the elastic film band 5A have a wrinkle-free state.
- the multilayer structure 6A is sent to the joining means 140, and is between the elastic film band 5A and the first surface sheet material band 2A, and between the elastic film band 5A and the second surface sheet material band 3A.
- a discontinuous joint that is, a welded portion, is formed over the entire multilayer structure 6A.
- the joining means 140 is preferably an ultrasonic sealing means, but may use another means such as fusion.
- the laminated body 8A can be obtained by joining the layers of the multilayer structure 6A with a plurality of discontinuous joining portions 40.
- FIG. 9 also shows an enlarged cross-sectional view of Part III.
- a plurality of joints 40, 40, ... Are intermittent between the elastic film band 5A and the first surface sheet material band 2A, and between the elastic film band 5A and the second surface sheet material band 3A, respectively. Is formed in.
- the joint portions 40, 40, ... Are attached to the obtained ear hook portions 20a, 20a (ear hook portion sheet 20) with the joint portions 40, 40, ... Regions with different degrees of density are formed (see later with reference to FIG. 10).
- the laminated body 8A is sent to the relaxing means 160.
- the tension applied to the elastic film band 5A is relaxed in the transport direction Dt.
- the degree to which the tension is relaxed in the relaxing means 160 is not limited, but it is preferably until the elastic film band 5A returns to its natural length.
- the elastic film band 5A contracts.
- the first surface sheet material band 2A, the elastic film band 5A, and the second surface sheet material band 3A are joined by the joint portions 40, 40, ..., And are fixed at that position. Therefore, when the elastic film band 5A contracts and the length is shortened, the portions of the first surface sheet material 2 and the second surface sheet material 3 that are not joined by the joint portions 40, 40, ... Are the elastic film.
- FIG. 9 also shows an enlarged cross-sectional view of Part IV.
- the elastic film band 5A is flat, but the first surface sheet material band 2A and the second surface sheet material band 3A are loose and wrinkles are formed. ..
- the ear hook portion sheet band 20A when the first surface sheet material band 2A and the second surface sheet material band 3A are cut in a cross section along the transport direction Dt, continuous unevenness is formed along the transport direction Dt. Has been done.
- the ear hook sheet band 20A is sent to the punching means 180.
- the punching means 180 the ear hook sheet band 20A is punched by a punching die so that the shape of each ear hook sheet 20 can be obtained.
- the punching means 180 can be used to obtain a plurality of ear hook sheets 20, 20, ....
- the elastic film band 5A having the first surface and the second surface opposite to the first surface is extended in a predetermined direction (transport direction Dt).
- the first surface sheet material band 2A and the second surface sheet material band 3A are arranged on both sides of the elastic film band 5A, respectively, and the first surface sheet material band 2A, the elastic film band 5A, and the second surface are arranged.
- a pair of ear hooks in which a laminated body 8A in which the sheet material strips 3A are joined at a plurality of joints is obtained, the laminated body 8A is contracted in a predetermined direction (transportation direction Dt), cut, and bonded to each other in a separable manner. It includes forming a plurality of ear hook sheet 20 constituting the portion.
- the ear hook sheets 20, 20, ... Are sent to the mask member combining device 200.
- the auxiliary material band 30A is arranged on one surface of the ear hook sheet 20.
- the mask member combination device 200 includes a mask body band supply means 221 for supplying the mask body band 10A forming the mask body.
- the mask body band supply means 221 supplies the mask body band 10A to the side of the ear hook sheet 20 opposite to the side on which the auxiliary material band 30A is arranged.
- the auxiliary material band 30A is arranged on the outermost side, but it can also be arranged between the ear hook sheet 20 and the mask main body band 10A.
- the auxiliary material band 30A, and the mask main body band 10A are combined, they are joined by the joining / cutting portion 240 at a predetermined position by a heat seal or the like, and the first side joining portion 50 described above. And the second side joint 60 (FIG. 1, FIG. 3, etc.) is formed. It is also cut following or at the same time as joining. Thereby, individual masks 1 can be obtained.
- FIG. 10 schematically shows the process in the mask ear hook manufacturing device 100 and the mask member combining device 200 in a plan view.
- the ear hook sheet band 20A obtained through the joining means 140 and the relaxing means 160 has regions having different degrees of density of the joining portions 40, 40, ... Along the transport direction Dt, that is, sparse.
- Distribution regions R1 A , R1 B , and dense distribution regions R2 are formed.
- the sparse distribution region R1 A , R1 B , and the dense distribution region R2 are formed in a band shape adjacent to the direction orthogonal to the transport direction Dt (the width direction of the ear hook sheet band 20A).
- the ear hook sheet band 20 A having the sparse distribution regions R1 A and R1 B and the dense distribution region R2 can be punched out by the punching means 180 to obtain the ear hook seat 20.
- the sparse distribution regions R1 A and R1 B and the dense distribution regions R2 that are continuous along the transport direction Dt are formed on the ear hook seat band 20A so as to be adjacent to each other in the direction orthogonal to the transport direction Dt.
- the degree of density of the joint portion 40 is changed between the ear back arrangement portion 24 of the ear hook portion 20a to be obtained and the upper transition portion 23 and the lower transition portion 26 without major setting change of the joining means 140. Can be done.
- the obtained ear hook sheet 20 is further separated and further conveyed, and one auxiliary material band 30A is joined to the side portion of the ear hook. Further, after joining to the mask main body band 10A, the auxiliary material band 30A and the mask main body band 10A are cut to form an individual mask 1.
- Appendix 1 An aspect according to Appendix 1 is a first surface sheet material and a second surface sheet material bonded by a plurality of joints to both sides of the stretchable member and the stretchable member in a stretched state, respectively.
- An ear hook for a mask formed of a material having and It has an upper transition portion extending to and a lower transition portion that transitions from the base portion to the back of the ear on the lower side, and the number of the plurality of joints in the back of the ear per unit area is determined. The number is larger than the number of the plurality of joints in at least one of the upper transition portion and the lower transition portion per unit area.
- a material having a stretchable member and a first surface sheet material and a second surface sheet material joined by a plurality of joints on both sides in a stretched state Is formed from.
- a desired stretchability can be achieved by adjusting the degree of stretchability of the stretchable member at the time of manufacturing the material, so that an ear hook portion having high stretchability can be obtained.
- the above-mentioned material is in a state where a large number of small wrinkles are formed on the first surface sheet material and the second surface sheet material, so that the material can be microscopically discontinuously contacted with the skin and therefore feels soft to the touch. Is also good.
- the joint points are formed more densely in the back of the ear arrangement portion. That is, since the number of places where the first surface sheet material, the elastic member, and the second surface sheet material are fixed together is relatively large per unit area, the resistance to tension is relatively large and it is difficult to stretch. .. Since the back of the ear is usually attached to the back of the ear, that is, the skin behind the ear and / or the back of the earlobe in a state of contact with the surface, when the back of the ear itself is greatly extended and deformed, it is attached to the skin. Friction may cause discomfort, but according to this embodiment, such discomfort can be reduced.
- the joint points are formed more sparsely. That is, since the number of places where the first surface sheet material, the elastic member, and the second surface sheet material are fixed together is relatively small per unit area, the resistance to tension is relatively small and the material is easily stretched. It has become. Therefore, it is possible to smoothly perform the mounting operation. As described above, according to this aspect, it is possible to reduce the feeling of discomfort at the time of wearing and improve the feeling of wearing, and the wearing operation is also easy.
- Appendix 2 In the embodiment according to Appendix 2, the area of each of the plurality of joints in the back of the ear is smaller than the area of each of the plurality of joints in at least one of the upper transition and the lower transition. ..
- the peripheral length per area of the joint is smaller. Is getting longer.
- the peripheral edge of the joint portion starts to peel off, so that the peripheral length per area of the joint portion is increased.
- the ear back arrangement portion can be configured to be more resistant to peeling and more durable.
- the pitch in the left-right direction of the plurality of joints in the back-arranged portion is larger than the pitch in the left-right direction of the plurality of joints in at least one of the upper transition portion and the lower transition portion. small.
- the pitch in the left-right direction of the plurality of joints in the back of the ear arrangement portion is smaller, and the pitch in the left-right direction of the plurality of joint portions in the upper transition portion and / or the lower transition portion is larger. It's getting bigger.
- the ear back arrangement portion is more easily extended in the left-right direction, and the operation of extending the ear hook portion in the left-right direction becomes smoother during the wearing operation.
- the joint portion is a fused portion in which the elastic member, the first surface sheet material, and the second surface sheet material are all fused together.
- the joint portion is the fused portion, the first surface sheet material, the elastic member, and the second surface sheet material can be joined more reliably and integrally.
- the stretchable member is a stretchable film.
- high elasticity can be obtained by forming the elastic member in the form of a film.
- the ear hook portion can be easily manufactured.
- the first surface sheet material and the second surface sheet material include a non-woven fabric.
- the surface of the ear material can be softened, and the wearing feeling of the ear material can be imparted. Can be improved.
- the mask main body and the mask ear hook portion of any one of the first to the sixth aspects are paired, and the ear back arrangement portions of the mask ear hook portion are separably coupled to each other. It is a mask provided with an ear hook sheet.
- the joint portion between the ear hook portion and the auxiliary material and the mask main body and the auxiliary material are formed.
- the joints with and can be formed separately and in the appropriate coupling form.
- the ear hook is attached to the mask body as compared with the case where the ear hook is directly connected to the mask body. Since it can be moved more freely, the degree of freedom in the mounting position of the ear hook is increased.
- the aspect according to the supplementary note 9 is a method of manufacturing an ear hook portion for a mask, wherein the elastic member band is extended in a predetermined direction on both sides of the elastic member band (a1), and the first surface sheet is formed.
- a material band and a second surface sheet material band are arranged respectively, and (a2) the first surface sheet material band, the elastic member band, and the second surface sheet material band are joined and laminated at a plurality of joint portions.
- a body is obtained, (a3) the laminated body is relaxed in the predetermined direction, and (a4) is cut into a predetermined shape to form a pair of ear hooks in which the ear hooks are separably connected.
- the upper side of the ear hook for the mask extends from the base to the back of the ear, including a base fixed to the main body of the mask, a back-of-ear arrangement portion located on the back of the ear of the wearer, and an upper side. It has a transition portion and a lower transition portion that transitions from the base portion to the back of the ear arrangement portion on the lower side, and at the time of the connection of the (a2), the unit area of the plurality of joint portions in the back of the ear arrangement portion. Make sure that the number of hits is greater than the number per unit area of the plurality of joints in at least one of the upper transition portion and the lower transition portion.
- the aspect according to the supplementary note 10 is a method for manufacturing a mask, in which (a) a mask ear hook sheet is manufactured by the manufacturing method according to the above appendix 9, and (b) the two ear hooks are separated from each other.
- One auxiliary material band is joined to the side portion of the sheet, (c) the auxiliary material band is joined to the mask main body band, and (d) the auxiliary material band and the mask main body band are cut to form individual masks.
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Abstract
Description
まず、本形態におけるマスクの基本構成について説明する。本形態におけるマスクは、装着者の顔、より具体的には装着者の少なくとも鼻及び口を覆うことのできるマスクであってよい。本形態によるマスクは、異物が顔に到達することを防止したり、装着者から発生する飛沫が飛散することを防止したりする機能を有し得るものであって、衛生マスク又はサージカルマスクとも呼ばれる。
なお、一対の耳掛け部20a、20aは、図1及び図3に示すように、それぞれシート状の補助材30、30を介してマスク本体10の両側部に結合されていてよい。耳掛け部20aとマスク本体10との結合に補助材30を介在させることによって、耳掛け部20aとマスク本体10とを直接結合することなく、マスク1を形成することができる。よって、耳掛け部20aと補助材30との結合、及びマスク本体10と補助材30との結合を別々に、それぞれ適切な形式で形成できる。また、耳掛け部20aの領域の一部がマスク本体10との固定のために使われることを回避できる。よって、補助材30を用いることで、耳掛け部20aが直接マスク本体10に結合されている場合に比べ、耳掛け部20aをマスク本体10に対してより自由に動かすことができ、耳掛け部20aを耳に装着する際の耳掛け部20aの、耳に対する位置をより自由に設定できる。図1~図3に示す形態では、マスク本体10とシート状の補助材30とが重ねられて、第1側部接合部50にて接合されている。また、シート状の耳掛け部20aとシート状の補助材30とが重ねられて、第2側部接合部60にて接合されている。
マスク1の使用開始時に、使用者は、一対の耳掛け部20a、20aをそれぞれの手で摘まんで又は把持して、互いに反対方向に引っ張ることができる。これにより、まず、分離可能な結合部28の結合を解除することができる。結合部28が、一対の耳掛け部20a、20a間の境界線に沿って形成されたミシン目から構成されているのであれば、ミシン目を破断して両耳掛け部20a、20aを境界線に沿って分離できる。その後、使用者は、一対の耳掛け部20a、20aをそれぞれ把持したまま、図3に示されているように、左右方向D2の外方(矢印で図示)へ開くことができる。
図6(a)に、耳掛け部20a又は耳掛け部シート20を構成する材料を、左右方向D2に沿って切った部分的な拡大断面図を示す。図6(a)に示すように、耳掛け部20a又は耳掛け部シート20を構成する材料は、複数の層が積層されてなるシートであってよい。図6(a)の例では、当該材料は、伸縮性材料(伸縮性フィルム)5を備えており、伸縮性材料(伸縮性フィルム)5の一方の面である第1面に第1表面シート材2が、第1面の反対側の面である第2面に第2表面シート材3が配置されている。なお、伸縮性部材は、引張り力を加えることによって少なくも1つの方向に伸長可能であり、且つ加えていた引張り力を解除することによって(外力を加えない状態で)元の長さ(自然長)に戻る性質を有する部材である。
図9に、マスクの製造装置300の概略図を示す。このマスクの製造装置300は、その上流に、耳掛け部の製造装置100を備え、続いて、製造されたマスク用耳掛け部とマスクの他の部材とを組み合わせる、マスク部材組み合わせ装置200が設けられている。
付記1に係る態様は、伸縮性部材と、前記伸縮性部材が伸長された状態で当該伸縮性部材の両面にそれぞれ、複数の接合部により接合された第1表面シート材及び第2表面シート材とを有する材料から形成されたマスク用耳掛け部であって、マスク本体に固定される基部と、装着者の耳裏に位置する耳裏配置部と、上側で前記基部から前記耳裏配置部へと延在する上側移行部と、下側で前記基部から耳裏配置部へ移行する下側移行部とを有し、前記耳裏配置部における前記複数の接合部の単位面積当たり個数が、前記上側移行部及び前記下側移行部の少なくとも一方における前記複数の接合部の単位面積当たり個数より多い。
付記2に係る態様では、前記耳裏配置部における前記複数の接合部の各一の面積が、前記上側移行部及び下側移行部の少なくとも一方における前記複数の接合部の各一の面積より小さい。
付記3に係る態様では、前記耳裏配置部における前記複数の接合部の左右方向のピッチが、前記上側移行部及び前記下側移行部の少なくとも一方における前記複数の接合部の左右方向のピッチより小さい。
付記4に係る態様では、前記接合部が、前記伸縮性部材、前記第1表面シート材、及び前記第2表面シート材がともに融着された融着部である。
付記5に係る態様では、前記伸縮性部材が伸縮性フィルムである。
付記6に係る態様では、前記第1表面シート材及び第2表面シート材が不織布を含む。
付記7に係る態様は、マスク本体と、上記第一から第六のいずれかの態様のマスク用耳掛け部が対にされ、当該マスク用耳掛け部の耳裏配置部同士が分離可能に結合されてなる耳掛け部シートとを備えた、マスクである。
付記8に係る態様では、前記マスク本体の両側部にそれぞれ配置された補助材を備え、前記耳掛け部の基部がそれぞれ、前記補助材を介して前記マスク本体に結合されている。
付記9に係る態様は、マスク用耳掛け部の製造方法であって、(a1)伸縮性部材帯の両面にそれぞれ、当該伸縮性部材帯を所定方向に伸長させた状態で、第1表面シート材帯及び第2表面シート材帯をそれぞれ配置し、(a2)前記第1表面シート材帯、前記伸縮性部材帯、及び前記第2表面シート材帯を、複数の接合部で接合して積層体を得て、(a3)前記積層体を前記所定方向に弛緩させ、(a4)所定形状に切断して、一対に耳掛け部が分離可能に結合されてなる耳掛け部シートを形成することを含み、前記マスク用耳掛け部が、マスク本体に固定される基部と、装着者の耳裏に位置する耳裏配置部と、上側で前記基部から前記耳裏配置部へと延在する上側移行部と、下側で前記基部から耳裏配置部へ移行する下側移行部とを有し、前記(a2)の接合の際に、前記耳裏配置部における前記複数の接合部の単位面積当たり個数が、前記上側移行部及び前記下側移行部の少なくとも一方における前記複数の接合部の単位面積当たり個数より多くなるようにする
付記10に係る態様は、マスクの製造方法であって、(a)上記付記9に係る態様の製造方法によってマスク用耳掛け部シートを製造し、(b)離間させた2つの前記耳掛け部シートの側部に1つの補助材帯を接合し、(c)前記補助材帯をマスク本体帯に接合させ、(d)前記補助材帯及び前記マスク本体帯を切断して、個別のマスクを形成する。
2 第1表面シート材
2A 第1表面シート材帯
3 第2表面シート材
3A 第2表面シート材帯
5 伸縮性フィルム(伸縮性部材)
5A 伸縮性フィルム帯(伸縮性部材帯)
6A 多層構造体
8A 積層体
10 マスク本体
10A マスク本体帯
15 プリーツ
20 耳掛け部シート
20a 耳掛け部
20A 耳掛け部シート帯
22 基部
23 上側移行部
24 耳裏配置部
25 摘み部
26 下側移行部
28 分離可能な結合部
29 開口
30 補助材
30A 補助材帯
40、41、42 接合部
50 第1側部接合部
60 第2側部接合部
100 マスク用耳掛け部製造装置
121 第1表面シート材帯供給手段
122 第2表面シート材帯供給手段
123 伸縮性フィルム帯供給手段
140 接合手段
160 弛緩手段
180 打ち抜き手段
200 マスク部材組み合わせ装置
221 マスク本体帯供給手段
240 接合・切断部
300 マスク製造装置
R1、R1A、R1B 疎分布領域
R2 密分布領域
D1 マスクの上下方向
D2 マスクの左右方向
Dt 搬送方向
Claims (10)
- 伸縮性部材と、前記伸縮性部材が伸長された状態で当該伸縮性部材の両面にそれぞれ、複数の接合部により接合された第1表面シート材及び第2表面シート材とを有する材料から形成されたマスク用耳掛け部であって、
マスク本体に固定される基部と、装着者の耳裏に位置する耳裏配置部と、上側で前記基部から前記耳裏配置部へと延在する上側移行部と、下側で前記基部から耳裏配置部へ移行する下側移行部とを有し、
前記耳裏配置部における前記複数の接合部の単位面積当たり個数が、前記上側移行部及び前記下側移行部の少なくとも一方における前記複数の接合部の単位面積当たり個数より多い、マスク用耳掛け部。 - 前記耳裏配置部における前記複数の接合部の各一の面積が、前記上側移行部及び下側移行部の少なくとも一方における前記複数の接合部の各一の面積より小さい、請求項1に記載のマスク用耳掛け部。
- 前記耳裏配置部における前記複数の接合部の左右方向のピッチが、前記上側移行部及び前記下側移行部の少なくとも一方における前記複数の接合部の左右方向のピッチより小さい、請求項1又は2に記載のマスク用耳掛け部。
- 前記接合部が、前記伸縮性部材、前記第1表面シート材、及び前記第2表面シート材がともに融着された融着部である、請求項1から3のいずれか一項に記載のマスク用耳掛け部。
- 前記伸縮性部材が伸縮性フィルムである、請求項1から4のいずれ一項に記載のマスク用耳掛け部。
- 前記第1表面シート材及び第2表面シート材が不織布を含む、請求項1から5のいずれか一項に記載のマスク用耳掛け部。
- マスク本体と、
請求項1から6のいずれか一項に記載のマスク用耳掛け部が対にされ、当該マスク用耳掛け部の耳裏配置部同士が分離可能に結合されてなる耳掛け部シートとを備えた、マスク。 - 前記マスク本体の両側部にそれぞれ配置された補助材を備え、
前記耳掛け部の基部がそれぞれ、前記補助材を介して前記マスク本体に結合されている、請求項7に記載のマスク。 - マスク用耳掛け部の製造方法であって、
(a1)伸縮性部材帯の両面にそれぞれ、当該伸縮性部材帯を所定方向に伸長させた状態で、第1表面シート材帯及び第2表面シート材帯をそれぞれ配置し、
(a2)前記第1表面シート材帯、前記伸縮性部材帯、及び前記第2表面シート材帯を、複数の接合部で接合して積層体を得て、
(a3)前記積層体を前記所定方向に弛緩させ、
(a4)所定形状に切断して、一対に耳掛け部が分離可能に結合されてなる耳掛け部シートを形成することを含み、
前記マスク用耳掛け部が、マスク本体に固定される基部と、装着者の耳裏に位置する耳裏配置部と、上側で前記基部から前記耳裏配置部へと延在する上側移行部と、下側で前記基部から耳裏配置部へ移行する下側移行部とを有し、
前記(a2)接合の際に、前記耳裏配置部における前記複数の接合部の単位面積当たり個数が、前記上側移行部及び前記下側移行部の少なくとも一方における前記複数の接合部の単位面積当たり個数より多くなるようにする、マスク用耳掛け部の製造方法。 - マスクの製造方法であって、
(a)請求項9に記載の製造方法によってマスク用耳掛け部シートを製造し、
(b)離間させた2つの前記耳掛け部シートの側部に1つの補助材帯を接合し、
(c)前記補助材帯をマスク本体帯に接合させ、
(d)前記補助材帯及び前記マスク本体帯を切断して、個別のマスクを形成する、マスクの製造方法。
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