CN106093295B

CN106093295B - Carbon dioxide sensitization time instruction device

Info

Publication number: CN106093295B
Application number: CN201610438508.9A
Authority: CN
Inventors: 余林飞; 刘永生; 郭欣; 刘文恒; 覃玲
Original assignee: Shenzhen Nine Stars Printing and Packaging Group Co Ltd
Current assignee: Shenzhen Nine Stars Printing and Packaging Group Co Ltd
Priority date: 2016-06-17
Filing date: 2016-06-17
Publication date: 2018-07-17
Anticipated expiration: 2036-06-17
Also published as: CN106093295A

Abstract

The present invention relates to a kind of carbon dioxide sensitization time instruction devices.A kind of carbon dioxide sensitization time instruction device, including：Marker, marker include adsorbent and the indication composition that is adsorbed in the adsorbent；Basal layer, for carrying the marker, the marker is laminated in the surface of the basal layer；Substrate layer covers the instruction layer surface, and the substrate layer is transparent material, and the substrate layer connect to form the host body that can obstruct gas with the edge seal of the basal layer, and the marker is contained in the enclosure space of the host body；Starter, including it is opened in the venthole of substrate layer and the sealing element for closing the venthole, the venthole runs through substrate layer, so as to so that extraneous gas enters the inside of host body.Above-mentioned carbon dioxide sensitization time instruction device color change cycle adjustment is relatively easy to.

Description

Carbon dioxide sensitization time instruction device

Technical field

The present invention relates to a kind of carbon dioxide sensitization time instruction devices.

Background technology

General product has the perishable products such as service life or shelf-life, especially food, beverage and drug Storage when be easy to happen it is putrid and deteriorated, in order to reduce packaging in oxygen, avoid under oxygen atmosphere go bad, generally use vacuum Packaging or controlled atmospheric packing, and the date of production and shelf-life are printed in outer packing so that whether people are to expired judging.So And if product packaging is opened or begins to use, how effectively to record opening or usage time is particularly important.

Existing carbon dioxide sensitization time instruction device includes basal layer, is formed in the marker of the substrate surface And protective layer, marker include instruction unit and reference section, instruction unit is prepared by printing, protective layer be covered in instruction unit surface with Instruction unit is protected, with the increase of product use time, instruction unit can with the time extension gradually in air Carbon dioxide reacts, to which the color that pH indicator is shown will produce variation, according to the color of instruction unit and reference section pair Than the usage time or opening time that may determine that product.Protective layer is covered in the surface of marker, and protection is played to marker Effect, needs to have good gas permeability, is reacted so that extraneous gas enters marker by protective layer, while in order to It avoids protective layer pair from instruction unit changing colour to adversely affect, usually selects material of the material that pH value is in neutrality as protective layer Material.

However, protective layer is covered in the surface of marker, play a protective role, needs to have good ventilative to marker Property, so that extraneous gas enters marker by protective layer and is reacted, while in order to avoid protective layer pair and instruction unit become Color adversely affects, and usually selects material of the material that pH value is in neutrality as protective layer.However the gas transmission rate of protective layer The color change cycle of time-indicating arrangement can be had an impact, the gas transmission rate for adjusting protective layer is more difficult.

Invention content

Based on this, it is necessary to provide a kind of carbon dioxide sensitization time instruction device facilitating adjustment color change cycle.

A kind of carbon dioxide sensitization time instruction device, including：

Marker, marker include adsorbent and the indication composition that is adsorbed in the adsorbent, the instruction combination Object is in terms of mass fraction, including 0.01 part~20 parts of pH indicator and 0.1 part~80 parts of carbon dioxide absorbing material, institute It states pH indicator and is selected from m-cresol purple, thymolphthalein, o-cresolphthalein, bromthymol blue, cresol red, cetyl trimethyl At least one of ammonium cation, dimethyl diaminophenazine chloride, phenol red, rhodamine, Sulforhodamine 101 and thymol blue, the carbon dioxide Sorbing material is selected from least one of quaternary ammonium salt, sodium hydroxide, lithium hydroxide, barium hydroxide, potassium hydroxide and sodium bicarbonate；

Basal layer, for carrying the marker, the marker is laminated in the surface of the basal layer；

Substrate layer, covers the instruction layer surface, and the substrate layer is transparent material, the substrate layer and the basal layer Edge seal connect the host body to be formed and can obstruct gas, the marker is contained in the enclosure space of the host body；

Starter, including it is opened in the venthole of substrate layer and the sealing element for closing the venthole, it is described logical Stomata runs through substrate layer, so as to so that extraneous gas enters the inside of host body.

The indication composition further includes 10 parts~100 parts of solvent in one of the embodiments, and the solvent is selected from At least one of ethyl alcohol, methanol, isopropanol, acetone and water.

The fringe region of the substrate layer and the fringe region of the basal layer are bonded in one in one of the embodiments, It rises and forms bonding part.

The sealing element affixes to the surface of the substrate layer by bonding glue-line in one of the embodiments,.

The venthole aperture is 1mm~15mm in one of the embodiments,.

Further include the comparison layer for being formed in the base material layer surface in one of the embodiments, the comparison layer includes Observation window and comparison portion, the observation window correspond to the marker, and the comparison portion provides reference color or other information.

Further include being laminated in the surface for comparing layer to be used to protect the guarantor for comparing layer in one of the embodiments, Sheath.

The venthole runs through the substrate layer, the comparison layer and the protective layer, institute in one of the embodiments, State the surface that sealing element affixes to the protective layer by bonding glue-line.

The thickness of the adsorbent is 1 μm~2000 μm in one of the embodiments, and the micropore of the adsorbent is put down Equal aperture is 1nm~5000nm.

Further include the glue for being laminated in a side surface of the basal layer far from the marker in one of the embodiments, Adhesion coating and the peeling layer for being adhered to the gluing layer surface.

Above-mentioned carbon dioxide sensitization time instruction device can easily adjust change by adjusting the pore size of venthole The color period；Marker in adsorbent by adsorbing indication composition, and it is not necessary that adhesive etc. is added, indicating effect is compared with subject to Really；In use, opening sealing element, so that extraneous gas enters the inside of host body by venthole, carbon dioxide is sensitive Time-indicating arrangement is activated, and external carbon dioxide gas enters the inside of host body, carbon dioxide gas contained in air Body reacts with the indication composition being attached on adsorbent, in indication composition, alkaline carbon dioxide absorbing material ratio As tetrabutylammonium hydroxide absorb sour gas carbon dioxide after, pH value reduce, pH indicator such as Bromothymol blue with It pH value and reduces and color gradient occurs, gradually become light blue from navy blue, and eventually become yellow, when the discoloration week of marker When phase is consistent with the shelf-life after product opening packaging, people can be intuitive by comparing the color that reference color and observation window be shown Draw the following conclusions：When the color that observation window is shown is close to starting color, show that product is very fresh, can be safe to use, when When the color that observation window is shown is close with intermediate colors, shows that product has placed a period of time, do not go bad, should use as early as possible, when When the color that observation window is shown is close with terminal colour, shows that product has gone bad, should not be continuing with；Above-mentioned carbon dioxide is sensitive The marker of time-indicating arrangement is prepared by adsorbing, and technique is relatively easy.

Description of the drawings

Fig. 1 is the structural schematic diagram of the carbon dioxide sensitization time instruction device of an embodiment；

Fig. 2 is the part-structure signal for comparing layer and starter of the carbon dioxide sensitization time instruction device in Fig. 1 Figure；

Fig. 3 is the structural schematic diagram of the carbon dioxide sensitization time instruction device of another embodiment；

Fig. 4 is the part-structure signal for comparing layer and starter of the carbon dioxide sensitization time instruction device in Fig. 3 Figure；

Fig. 5 is the structural schematic diagram of the carbon dioxide sensitization time instruction device of another embodiment；

Fig. 6 is the structural schematic diagram of the carbon dioxide sensitization time instruction device of another embodiment.

Specific implementation mode

Carbon dioxide sensitization time instruction device is made mainly in combination with specific embodiment and attached drawing below further details of Explanation.

Referring to Fig. 1, the carbon dioxide sensitivity discoloration instruction device 100 of an embodiment includes basal layer 110, substrate layer 120, marker 130, dielectric layer 150, comparison layer 160, protective layer 170, adhesive layer 180, peeling layer 185 and starter 190.

Basal layer 110 is for carrying marker 130.Basal layer 110 has good air-tightness, gas can be prevented to penetrate Basal layer 110.The material of basal layer 110 be polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET) or Surface recombination has the composite material of above-mentioned material.Pass through the side such as printing or compound opaque material in one of the embodiments, Method sets basal layer 110 to non-transparent material.Certainly, it should be noted that the material of basal layer 110 is not limited to above-mentioned material Material, other materials with good hot-melt bonding performance and air-tightness all can serve as the material of basal layer 110.

Substrate layer 120 is used to cooperatively form the host body 140 for accommodating marker 130 with basal layer 110.Substrate layer 120 have good transparency, so as to observe the face for being housed in the marker 130 in host body 140 by substrate layer 120 Color.Substrate layer 120 plays printing and compares 160 carrying of layer, air barrier effect and the effect with 110 hot melt adhesive of basal layer, With good transparency, the material of substrate layer 120 is polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET) or surface recombination has the composite transparent material of above-mentioned material.Certainly, it should be noted that the material of substrate layer 120 is unlimited In above-mentioned material, other materials with the good transparency, hot sticky performance and air-tightness all can serve as the material of substrate layer 120 Material.

Basal layer 110 and substrate layer 120 are stacked together, marker 130 between basal layer 110 and substrate layer 120, And cover the middle part of basal layer 110.The fringe region of basal layer 110 and the fringe region of substrate layer 120 are sealed to be formed Bonding part 125, to formed one with good air-tightness, can prevent gas by closed receiving space.It is illustrating Embodiment in, bonding part 125 be annular, have certain width.Substrate layer 120 and base in one of the embodiments, The contact surface material identical of bottom 110, when to hot melt adhesive, identical high molecular material at high temperature can be by intermolecular Gluing-free is realized in fusion.Certainly, in other examples, the marginal zone of the fringe region of basal layer 110 and substrate layer 120 Domain can be adhesively-bonded together to form bonding part 125 by glue.

Dielectric layer 150 is between basal layer 110 and substrate layer 120, and dielectric layer 150 is set to bonding part 125, and covers The subregion at 110 edge of basal layer, for reducing the cohesive force of 125 subregion of bonding part.In the illustrated embodiment, Dielectric layer 150 covers the part surface product of the fringe region of substrate layer 120 or the fringe region of basal layer 110.Dielectric layer 150 is Sheet, width of the dielectric layer 150 in the size and the bonding part 125 at the position where dielectric layer 150 of the width direction of bonding part 125 Spend identical, 150 autoadhesion portion 125 of dielectric layer extends to bonding part 125 far from marker 130 close to the side of marker 130 Side.The material of dielectric layer 150 is selected from least one of common ink, UV gloss oil, organic silicone oil and anodized aluminium.In bonding part 125 setting dielectric layers 140 facilitate so as to reduce cohesive force at the position of setting dielectric layer 150 by the substrate of this position Layer 110 detaches the gap to be formed and be entered for extraneous gas with substrate layer 120.The width in gap is 1mm~50mm.

Marker 130 is contained in the receiving space of host body 140.Marker 130 is including adsorbent and is adsorbed on absorption The indication composition of body.Carrier of the adsorbent as carrying indication composition, has micropore property to adsorb indication composition. The pH value of adsorbent itself is in neutrality in one of the embodiments, so as to avoid impacting indication composition.It inhales The material of attached body is microporous teflon membran, glass fibre porous film, microporous polypropylene membrane, pure pulp fibres, nylon fiber Or cloth, certainly, it should be noted that any pH value is in neutrality, and the material that can absorb liquid through capillary action can be made For the material of adsorbent.The thickness of adsorbent is 1 μm~2000 μm, and the average pore size of adsorbent micropore is 1nm~5000nm.

Specifically in the illustrated embodiment, indication composition is carbon dioxide sensitivity indication composition.Indication composition By the way that indicating liquid to be adsorbed in adsorbent, obtained after dry.Indicating liquid includes pH indicator, carbon dioxide adsorption material Material and solvent.Indication composition includes pH indicator and carbon dioxide absorbing material.Indicator solution in one of the embodiments, Body is in terms of mass fraction, including 0.01 part~20 parts of pH indicator, 0.1 part~80 parts of carbon dioxide absorbing material and 10 Part~100 parts of solvent.Indicant combination, instruction combination are obtained after the indicating liquid evaporation of the solvent drying being adsorbed in adsorbent Object includes 0.01 part~20 parts of pH indicator and 0.1 part~80 parts of carbon dioxide absorbing material.Certainly, other real Apply in example, indication composition is identical with the composition of indicating liquid, including 0.01 part~20 parts of pH indicator, 0.1 part ~80 parts of carbon dioxide absorbing material and 10 parts~100 parts of solvent, indicating liquid is adsorbed in adsorbent, without dry It is dry.

PH indicator changes sensitivity to pH value, occurs as indication composition pH value changes, the color of pH indicator Also it changes.PH indicator is selected from m-cresol purple (MCP), thymolphthalein, o-cresolphthalein, bromthymol blue (BTB), first Phenol red, cetyltrimethyl ammonium cationic (CTA), dimethyl diaminophenazine chloride (NR), phenol red (PR), rhodamine (R6G), Sulforhodamine At least one of 101 and thymol blue.It is appreciated that other also can be used as pH indicator to the material of pH sensitive.

Carbon dioxide absorbing material can absorb the sour gas carbon dioxide in air, and then changes the pH of indication composition Value.Carbon dioxide absorbing material is in quaternary ammonium salt, sodium hydroxide, lithium hydroxide, barium hydroxide, potassium hydroxide and sodium bicarbonate At least one.Quaternary ammonium salt is selected from tetrabutylammonium hydroxide, tetraethyl ammonium hydroxide, tetramethyl in one of the embodiments, At least one of ammonium hydroxide and tetrapropylammonium hydroxide.

Solvent can dissolve PH indicator and carbon dioxide absorbing material.Solvent be selected from ethyl alcohol, methanol, isopropanol, acetone and At least one of water.It is appreciated that other dissolvable pH indicators and carbon dioxide absorbing material and pH value were in neutrality Fluent material all can be used as solvent.

Indication composition is oxygen sensitive indication composition in one of the embodiments,.Indication composition will be by that will refer to Show liquid adsorption in adsorbent, is obtained after dry.Indicating liquid includes oxygen sensitive dyestuff, reducing agent and solvent.Key group It includes oxygen sensitive dyestuff and reducing agent to close object.Indicating liquid includes 0.01 part~20 parts of oxygen sensitive in terms of mass fraction Dyestuff, 0.01 part~50 parts of reducing agent and 10 parts~100 parts of solvent.The indicating liquid evaporation of the solvent being adsorbed in adsorbent Obtained after drying indicant combination, indication composition include 0.01 part~20 parts oxygen sensitive dyestuff and 0.01 part~50 parts Reducing agent.Certainly, in other examples, indication composition is identical with the composition of indicating liquid, including 0.01 part~ 20 parts of oxygen sensitive dyestuff, 0.01 part~50 parts of reducing agent and 10 parts~100 parts of solvent, indicating liquid is adsorbed on In attached body, it is not necessarily to drying.

Oxygen sensitive dyestuff has two kinds of forms of oxidized and reduced, corresponds to two different colors, oxidation state respectively Oxygen sensitive dyestuff can be reduced agent reduction, reduction-state is in after reduction, the oxygen sensitive dyestuff of reduction-state can send out with oxygen Color change occurs for raw redox reaction, reaction process.Oxygen sensitive dye selection thiazine dye, oxazine dye, azine dye At least one of material, indophenol dye and bipseudoindoxyl dye.Most common oxygen sensitive active dyestuff is methylene blue.Thiazine dye selects From at least one of methylene blue, thionine and toluidine blue.Oxazine dye is selected from resazurin, Safranine O, phenosafraine and day At least one of green stone indigo plant.Azine dye is selected from least one of m-cresol purple and reddish black A.Indophenol dye is dichloro indigo Phenol.Bipseudoindoxyl dye is selected from least one of indigo and indigo-blue famille rose.It should be appreciated that other oxidation-reduction indicators can also be made For the oxygen sensitive dyestuff of the present invention.

Reducing agent can reduction-oxidation state oxygen sensitive dyestuff, make it have with oxygen occur redox reaction energy Power.Reducing agent is selected from dithionite, the oxidation product of dithionite, sulphite, boron hydrogen sodium sulfite, hydroboration At least one of sodium, glucose.Dithionite can be sodium dithionite.The oxidation product of dithionite selects At least one of sodium thiosulfate and bisulfites freely.Bisulfites be selected from sodium hydrogensulfite, potassium bisulfite and At least one of magnesium bisulfite.Sulphite is selected from least one of calcium sulfite, potassium sulfite and magnesium sulfite.It answers Work as understanding, other reducing agents for restoring above-mentioned oxygen sensitive dyestuff also can be used as the reducing agent of the present invention.And it is added excessive Reducing agent can extend color change cycle.

Solvent is used for dissolved oxygen sensitive dye and reducing agent.Solvent is in ethyl alcohol, methanol, isopropanol, acetone and water At least one.It is appreciated that the fluent material that other dissolvable oxygen sensitive dyestuffs and reducing agent and pH value are in neutrality all may be used As solvent.

Indication composition is acid-sensitive indication composition in one of the embodiments,.Indicating liquid includes pH value instruction Agent and solvent.Indication composition includes pH indicator and volatile acid.Indication composition is by the way that indicating liquid to be adsorbed on Volatile acid is sprayed in attached body, after solvent seasoning to obtain.Indicating liquid includes 0.01 part~20 parts of pH value in terms of mass fraction Indicator, 10 parts~100 parts of solvent.0.1 part~50 are sprayed after the indicating liquid evaporation of the solvent drying being adsorbed in adsorbent The volatile acid of part obtains indicant combination, and indication composition includes 0.01 part~20 parts of pH indicator and 0.1 part~50 The volatile acid of part.Certainly, in other embodiments, indication composition include 0.01 part~20 parts pH indicator, 10 parts ~100 parts of solvent and 0.1 part~50 parts of volatile acid, are directly adsorbed on adsorbent by indication composition.

Indication composition further includes 0.05 part~30 parts of alkali in one of the embodiments,.Alkali is selected from sodium hydroxide, hydrogen At least one of magnesia, potassium hydroxide and lithium hydroxide.When preparation, alkali is mixed with a small amount of water dissolution with other components or Directly in a solvent by alkali soluble solution.

PH indicator changes sensitivity to pH value, and color change occurs as pH value changes.PH indicator be selected between Cresol-purple (MCP), thymolphthalein, o-cresolphthalein, bromthymol blue (BTB), cresol red, cetyltrimethyl ammonium cation (CTA), at least one of dimethyl diaminophenazine chloride (NR), phenol red (PR), rhodamine (R6G) Sulforhodamine 101 and thymol blue.It should Understand, other materials to pH sensitive all can be used as pH indicator.

Volatile acid has volatility, for changing the pH value of indication composition.Volatile acid is carboxylic acid.Carboxylic acid is selected from second At least one of acid, propionic acid, butyric acid and other higher carbon chain carboxylic acids.It is appreciated that other have volatile acid Matter also can be used as volatile acid.

Solvent is for dissolving pH indicator.Solvent is selected from least one of ethyl alcohol, methanol, isopropanol, acetone and water. It is appreciated that the fluent material that other dissolvable pH indicators and pH value are in neutrality all can be used as solvent.

Alkali is used to expand the pH value variation range of instruction component, and after alkali is added in indicating liquid, initial pH value is in alkalinity, Spray excessive volatile acid after being adsorbed by drying, volatile acid is reacted with highly basic generates strong base-weak acid salt, due to volatile acid with Alkali is compared to excessively, and pH value is in acidity, and with the volatilization of volatile acid, instruction component pH value gradually rises, when volatile acid is complete After full volatilization, instruction component is because strong base weak acid salt hydrolysis is in alkalinity, that is, after alkali being added, indicates that the pH value variation range of component can be from Acidity becomes alkalinity (the instruction component pH value variation range that alkali is not added is to become neutral from acidity), makes the color of instruction component Variation becomes apparent from.Alkali is at least one of soluble highly basic such as sodium hydroxide, potassium hydroxide, magnesium hydroxide, lithium hydroxide.When So, it is added without alkali, can also be served the same role using alkaline adsorption body.

Indication composition is alkali sensitivity indication composition in one of the embodiments,.Indicating liquid includes pH value instruction Agent and solvent.Indication composition includes pH indicator and volatile base.Indication composition is by the way that indicating liquid to be adsorbed on Volatile base is sprayed in attached body, after solvent seasoning to obtain.Indicating liquid includes 0.01 part~20 parts of pH value in terms of mass fraction Indicator and 10 parts~100 parts of solvent.0.1 part~50 are sprayed after the indicating liquid evaporation of the solvent drying being adsorbed in adsorbent The volatile base of part obtains indicant combination, and indication composition includes 0.01 part~20 parts of pH indicator and 0.1 part~50 The volatile base of part.Certainly, in other embodiments, indication composition include 0.01 part~20 parts pH indicator, 10 parts ~100 parts of solvent and 0.1 part~50 parts of volatile base, are directly adsorbed on adsorbent by indication composition.

Indication composition further includes 0.05 part~30 parts of acid in one of the embodiments,.Acid is selected from HCl, H₂SO₄And HNO₃At least one of.When preparation, acid is added in the form of hydrochloric acid, the concentrated sulfuric acid or concentrated nitric acid, what number said before referred to It is active ingredient (HCl, H in hydrochloric acid, the concentrated sulfuric acid or concentrated nitric acid₂SO₄Or HNO₃) number, do not include the water that wherein contains.

PH indicator changes sensitivity to pH value, and color change occurs as pH value changes.PH indicator be selected between Cresol-purple (MCP), thymolphthalein, o-cresolphthalein, bromthymol blue (BTB), cresol red, cetyltrimethyl ammonium cation (CTA), at least one of dimethyl diaminophenazine chloride (NR), phenol red (PR), rhodamine (R6G) Sulforhodamine 101 and thymol blue.It can be with Understand, other materials to pH sensitive all can be used as the pH indicator of the present invention.

Volatile base has volatility, for changing the pH value of indication composition.Volatile base is selected from ammonium hydroxide, hydroxide At least one of ammonium, propylamine, n-butylamine, n-hexylamine and n-octyl amine.It should be appreciated that other have volatile alkaline matter It can be used as volatile base.

It is sour that for expanding the pH value variation range for indicating component, after acid is added in indicating liquid, initial pH value is in acidity, Excessive volatile base is sprayed after absorption indicating liquid drying, volatile base is reacted with strong acid generates strong acid weak base salt, due to waving For hair property alkali with acid compared to excessive, pH value is in alkalinity, with the volatilization of volatile base, indicates that component pH value continuously decreases, when waving After the volatilization completely of hair property alkali, instruction component is because strong acid weak base salt hydrolysis is in acidity, that is, after acid being added, indicates the pH value variation of component Range can become acid (the instruction component pH value variation range that acid is not added is to become neutral from alkalinity) from alkalinity, make key group The color change of part becomes apparent from.Certainly, it is added without acid, can also be served the same role using acid adsorbent.

Please refer to Fig. 1 and Fig. 2, the surface that layer 160 is formed in substrate layer 120 is compared.It includes observation window to compare layer 160 162 and comparison portion 164.Observation window 162 is located at the middle part for comparing layer 160 in order to observe the color of marker 130, in diagram In embodiment, 162 face marker 130 of observation window.In the illustrated embodiment, it compares 160 middle part hollow out of layer and forms sight Window 162 is examined, certainly, in other embodiments, observation window 162 can be transparent material, be not necessarily to hollow out.Comparison portion 164 carries Color or other information for reference, the comparison for being used as marker 130 identify, and comparison portion 164 can be by printing on 120 surface of substrate layer Scopiform at.Reference color can be the terminal colour of indication composition discoloration, and certainly, reference color can also include indication composition Starting color, in the illustrated embodiment, comparison portion 164 includes three kinds of reference colors, provides indication composition respectively Starting color, intermediate colors and terminal colour.When the color that marker 130 is shown is starting color, indicate that carbon dioxide is quick The product for feeling 100 instruction of discoloration instruction device is more fresh, when the color that marker 130 is shown is intermediate colors, indicates production Product will use as early as possible, when the color that marker 130 is shown is terminal colour, indicate that product has gone bad.Certainly, as needed, Reference color could be provided as graduated colors.

Protective layer 170, which is laminated in, compares the surface of layer 160 to protect comparison layer 160.Protective layer 170 can be protection oil reservoir or Protection film layer.The material of protective layer 170 in water-based gloss oil, aqueous mute oil, UV gloss oil PET film and PP films at least one Kind.

Adhesive layer 180 is formed in a side surface of the basal layer 110 far from marker 130.Adhesive layer 180 is for referring to discoloration Showing device 100 is adhered to the surface of other articles, and the material of adhesive layer 180 is in acrylic resin, pressure sensitive adhesive and polyurethane At least one.

Peeling layer 185 is adhered to the surface of adhesive layer 180.Preferably, peeling layer 185 for glassine paper or is coated with silicone oil Paper, so as to the sur-face peeling by peeling layer 185 from adhesive layer 180.

Starter 190 is used to open the enclosure space of the formation of host body 140, and extraneous gas is made to enter host body 140. In embodiment illustrated, starter 190 is a handgrip for facilitating gripping.Starter 190 corresponds to substrate layer 120 The edge of the position of dielectric layer 150 connects.To by pullling starter 190, give 120 1 upward effects of substrate layer Power, since the presence of dielectric layer 150 reduces the cohesive force of the bonding part 125 at 150 place position of dielectric layer, in setting dielectric layer 150 position is opened easily, and a breathable gap occurs, so that extraneous gas enters host body by gap 140 inside, carbon dioxide sensitivity discoloration instruction device 100 are activated.

In the illustrated embodiment, starter 190 is rectangular patch, is three-decker, first layer and substrate layer 120 It is integrally formed, second is integrally formed with layer 160 is compared, and third layer is integrally formed with protective layer 170, and starter 190 is from base The edge of material layer 120 extends outwardly.

In the illustrated embodiment, starter 190 and substrate layer 120, the connection for comparing layer 160 and protective layer 170 Place is formed with impression 192, so that starter 190 tilts slightly to the direction far from basal layer 110, is held with facilitating.

Above-mentioned carbon dioxide sensitivity discoloration instruction device 100 can easily adjust discoloration by adjusting the size in gap Period；Marker in adsorbent by adsorbing indication composition, and it is not necessary that adhesive etc. is added, indicating effect is compared with subject to Really；In use, gently pullling starter 190,120 1 upward active forces of substrate layer are given, due to the presence of dielectric layer 150 The cohesive force for reducing the bonding part 125 at 150 place position of dielectric layer is opened easily in the position of setting dielectric layer 150, goes out An existing breathable gap, so that extraneous gas enters the inside of host body 140, carbon dioxide sensitivity color by gap Become instruction device 100 to be activated, external carbon dioxide gas enters the inside of host body 140, titanium dioxide contained in air Carbon gas reacts with the indication composition being attached on adsorbent, in indication composition, alkaline carbon dioxide absorption material After material such as tetrabutylammonium hydroxide absorbs sour gas carbon dioxide, pH value reduces, pH indicator such as bromine Thymol As pH value reduces color gradient occurs for indigo plant, gradually becomes light blue from navy blue, and eventually become yellow, when marker 130 Color change cycle and product open the shelf-life after packaging it is consistent when, people can be by comparing reference color and observation window show Color is intuitively drawn the following conclusions：When the color that observation window is shown is close to starting color, show that product is very fresh, can trust It uses, when the color that observation window is shown is close with intermediate colors, shows that product has placed a period of time, do not go bad, it should be as early as possible It uses, when the color that observation window is shown is close with terminal colour, shows that product has gone bad, should not be continuing with.Carbon dioxide The marker of sensitive discoloration instruction device is prepared by adsorbing, and technique is relatively easy.

It should be further noted that the discoloration of marker 130 can be adjusted by adjusting the concentration of indicating liquid ingredient Period, by adjusting the thickness of marker 130 and the aperture of adsorbent micropore, adsorbent was adsorbed on so as to control certainly The total amount of interior indication composition.By adjusting the cross-sectional width in air inlet gap, can be indicated with regulation of carbon dioxide sensitivity discoloration The size in the gap that device 100 is formed when starting enters internal rate to control air, and then controls color change cycle.

Referring to Fig. 3, the carbon dioxide sensitivity discoloration instruction device 200 of an embodiment includes basal layer 210, substrate layer 220, marker 230, comparison layer 260, protective layer 270, adhesive layer 280, peeling layer 285 and starter 290.

Basal layer 210 is for carrying marker 230.Basal layer 210 has good air-tightness, gas can be prevented to penetrate Basal layer 210.The material of basal layer 210 be polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET) or Surface recombination has the composite material of above-mentioned material.Pass through the side such as printing or compound opaque material in one of the embodiments, Method sets basal layer 210 to non-transparent material.Certainly, it should be noted that the material of basal layer 210 is not limited to above-mentioned material Material, other materials with good hot sticky performance and air-tightness all can serve as the material of basal layer 210.

Substrate layer 220 is used to cooperatively form the host body 240 for accommodating marker 230 with basal layer 210.Substrate layer 220 have good transparency, so as to observe the face for being housed in the marker 230 in host body 140 by substrate layer 220 Color.The material of substrate layer 220 is polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET) or surface recombination There is the composite transparent material of above-mentioned material.Certainly, it should be noted that the material of substrate layer 220 is not limited to above-mentioned material, other Material with the good transparency, hot sticky performance and air-tightness all can serve as the material of substrate layer 220.

Basal layer 210 and substrate layer 220 are stacked together, marker 230 between basal layer 210 and substrate layer 220, And cover the middle part of basal layer 210.The fringe region of basal layer 210 and the fringe region of substrate layer 220 are sealed to be formed Bonding part 225, to formed one with good air-tightness, can prevent gas by closed receiving space.Wherein In one embodiment, the contact surface material identical of substrate layer 220 and basal layer 210, when to hot melt adhesive, identical material exists Gluing-free can be realized under high temperature by intermolecular fusion.Certainly, in other examples, the marginal zone of basal layer 210 The fringe region of domain and substrate layer 220 can be adhesively-bonded together to form bonding part 225 by glue.

Marker 230 is contained in the receiving space of host body 240.Marker 230 is including adsorbent and is adsorbed on absorption The indication composition of body.Carrier of the adsorbent as carrying indication composition, has micropore property to adsorb indication composition. The pH value of adsorbent itself is in neutrality in one of the embodiments, so as to avoid causing negative shadow to indication composition It rings.The material of adsorbent is microporous teflon membran, glass fibre porous film, microporous polypropylene membrane, pure pulp fibres, nylon Fiber or cloth, certainly, it should be noted that any pH value is in neutrality, and the material that can absorb liquid through capillary action all may be used Using the material as adsorbent.

Oxygen sensitive dyestuff has two kinds of forms of oxidized and reduced, corresponds to two different colors, oxidation state respectively Oxygen sensitive dyestuff can be reduced agent reduction, reduction-state is in after reduction, the oxygen sensitive dyestuff of reduction-state can send out with oxygen Color change occurs for raw redox reaction, reaction process.Thiazine dye, oxazine dye, azine may be selected in oxygen sensitive dyestuff At least one of dyestuff, indophenol dye and bipseudoindoxyl dye.Most common oxygen sensitive active dyestuff is methylene blue.Thiazine dye Selected from least one of methylene blue, thionine and toluidine blue.Oxazine dye be selected from resazurin, Safranine O, phenosafraine and At least one of celestine blue.Azine dye is selected from least one of m-cresol purple and reddish black A.Indophenol dye is dichloro indigo Phenol.Bipseudoindoxyl dye is selected from least one of indigo and indigo-blue famille rose.It should be appreciated that other oxidation-reduction indicators can also be made For the oxygen sensitive dyestuff of the present invention.

Please refer to Fig. 3 and Fig. 4, the surface that layer 260 is formed in substrate layer 220 is compared.It includes observation window to compare layer 260 262 and comparison portion 264.Observation window 262 is located at the middle part for comparing layer 260 in order to observe the color of marker 230, in diagram In embodiment, 262 face marker 230 of observation window.In the illustrated embodiment, it compares 260 middle part hollow out of layer and forms sight Window 262 is examined, certainly, in other embodiments, observation window 262 can be transparent material, be not necessarily to hollow out.Comparison portion 264 carries Color or other information for reference, the comparison for being used as marker 230 identify, and comparison portion 264 can be by printing on 220 surface of substrate layer Scopiform at.Reference color can be the terminal colour of indication composition discoloration, and certainly, reference color can also include indication composition Starting color, in the illustrated embodiment, comparison portion 264 includes three kinds of reference colors, provides indication composition respectively Starting color, intermediate colors and terminal colour.When the color that marker 230 is shown is starting color, indicate that carbon dioxide is quick The product for feeling 200 instruction of discoloration instruction device is more fresh, when the color that marker 230 is shown is intermediate colors, indicates production Product will use as early as possible, when the color that marker 230 is shown is terminal colour, indicate that product has gone bad.Certainly, as needed, Reference color could be provided as graduated colors.

Protective layer 270, which is laminated in, compares the surface of layer 260 to protect comparison layer 260.Protective layer 270 can be protection oil reservoir or Protection film layer.The material of protective layer 270 in water-based gloss oil, aqueous mute oil, UV gloss oil PP films and PET film at least one Kind.

Adhesive layer 280 is formed in a side surface of the basal layer 210 far from marker 230.Adhesive layer 280 is for referring to discoloration Showing device 200 is adhered to the material of the surface adhesive layer 280 of other articles in acrylic resin, pressure sensitive adhesive and polyurethane It is at least one.

Peeling layer 285 is adhered to the surface of adhesive layer 280.Preferably, peeling layer 285 for glassine paper or is coated with silicone oil Paper, so as to the sur-face peeling by peeling layer 285 from adhesive layer 280.

Starter 290 is used to open the enclosure space of the formation of host body 240, and extraneous gas is made to enter host body 240.

In the illustrated embodiment, starter 290 includes venthole 292 and the sealing for closing venthole 292 Part 294.Venthole 292 is opened in host body 240, enters for extraneous gas for opening host body 240, specifically, ventilation Hole 292 is through protective layer 270, comparison layer 260 and substrate layer 220, so as to so that extraneous gas enters in host body 240 Portion, carbon dioxide sensitivity discoloration instruction device 200 are activated.292 aperture of venthole is 1mm~15mm.

Sealing element 294 is Obstruct membrane, the material of sealing element 294 be selected from PET film, PP films, PVC film, aluminizer and comprising At least one of composite material of above-mentioned material.Sealing element 294 affixes to protective layer 270 by bonding glue-line 296 and closes Venthole 292.In the illustrated embodiment, 294 one end of sealing element extends to form the handgrip for facilitating gripping.In use, catching Handgrip removes sealing element 294, to open the inside that venthole 292 makes extraneous gas enter host body 240.Bond glue-line 296 material is selected from least one of UV glue, pressure sensitive adhesive and acrylic resin.

Above-mentioned carbon dioxide sensitivity discoloration instruction device 200, by adjusting the size of venthole that can easily adjust discoloration Period；In use, gently pullling starter 290, sealing element 294 is removed, opens venthole 292 so that extraneous gas Enter the inside of host body 240 by gap, carbon dioxide sensitivity discoloration instruction device 200 is activated, external carbon dioxide Gas enters the inside of host body 240, carbon dioxide gas and the indication composition being attached on adsorbent contained in air It reacts, in indication composition, alkaline carbon dioxide absorbing material such as tetrabutylammonium hydroxide absorbs sour gas two After carbonoxide, pH value reduces, and as pH value reduces color gradient occurs for pH indicator such as Bromothymol blue, gradually from depth Blue becomes light blue, and eventually becomes yellow, when color change cycle and the product of marker 230 open the shelf-life one after packaging When cause, people can intuitively be drawn the following conclusions by comparing the color that reference color and observation window are shown：When observation window is shown Color close to starting color when, show that product is very fresh, can be safe to use, when the color that observation window is shown connects with intermediate colors When close, show that product has placed a period of time, do not go bad, should use as early as possible, when the color that observation window is shown connects with terminal colour When close, show that product has gone bad, should not be continuing with.The marker of carbon dioxide sensitivity discoloration instruction device is made by adsorbing Standby, technique is relatively easy.

It should be further noted that the discoloration of marker 230 can be adjusted by adjusting the concentration of indicating liquid ingredient Period, by adjusting the thickness of marker 230 and the aperture of adsorbent micropore, adsorbent was adsorbed on so as to control certainly The total amount of interior indication composition.By adjusting the aperture of venthole 292, enter internal rate to control air, to Control color change cycle.

Referring to Fig. 5, the structure of the carbon dioxide sensitization time instruction device 300 of an embodiment is sensitive with carbon dioxide The structure of time-indicating arrangement 100 is roughly the same, and carbon dioxide sensitization time instruction device 300 includes basal layer 310, substrate layer 320, marker 330, dielectric layer 350, protective layer 370, adhesive layer 380, peeling layer 385 and starter 390, difference exist In carbon dioxide sensitization time instruction device 300 does not include comparing layer, the knot of other structures and sensitive discoloration instruction device 100 Structure is identical.

Specifically, basal layer 310 is for carrying marker 330.Basal layer 310 has good air-tightness, can prevent Gas penetrates basal layer 310.The material of basal layer 310 is polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET) or surface recombination has the composite material of above-mentioned material.Pass through printing or compound opaque material in one of the embodiments, The methods of material, sets basal layer 310 to non-transparent material.Certainly, it should be noted that the material of basal layer 310 is not limited to Above-mentioned material, other materials with good hot-melt bonding performance and air-tightness all can serve as the material of basal layer 310.

Substrate layer 320 is used to cooperatively form the host body 340 for accommodating marker 330 with basal layer 310.Substrate layer 320 have good transparency, so as to observe the face for being housed in the marker 330 in host body 340 by substrate layer 320 Color.Substrate layer 320 plays air barrier and the effect with 110 hot melt adhesive of basal layer, has good transparency, substrate layer 320 material, which is polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET) or surface recombination, above-mentioned material The composite transparent material of material.Certainly, it should be noted that the material of substrate layer 320 is not limited to above-mentioned material, other have good Transparent, hot sticky performance and the material of air-tightness all can serve as the material of substrate layer 320.

Basal layer 310 and substrate layer 320 are stacked together, marker 330 between basal layer 310 and substrate layer 320, And cover the middle part of basal layer 310.The fringe region of basal layer 310 and the fringe region of substrate layer 320 are sealed to be formed Bonding part 325, to formed one with good air-tightness, can prevent gas by closed receiving space.It is illustrating Embodiment in, bonding part 325 be annular, have certain width.Substrate layer 320 and base in one of the embodiments, The contact surface material identical of bottom 310, when to hot melt adhesive, identical material at high temperature can be real by intermolecular fusion Existing gluing-free.Certainly, in other examples, the fringe region of the fringe region of basal layer 310 and substrate layer 320 can be with It is adhesively-bonded together to form bonding part 325 by glue.

Dielectric layer 350 is between basal layer 310 and substrate layer 320, and dielectric layer 350 is set to bonding part 325, and covers The subregion at 310 edge of basal layer, for reducing the cohesive force of 325 subregion of bonding part.In the illustrated embodiment, Dielectric layer 350 covers the part surface product of the fringe region of substrate layer 320 or the fringe region of basal layer 310.Dielectric layer 350 is Sheet, width of the dielectric layer 350 in the size and the bonding part 325 at the position where dielectric layer 350 of the width direction of bonding part 325 Spend identical, 350 autoadhesion portion 325 of dielectric layer extends to bonding part 325 far from marker 330 close to the side of marker 330 Side.The material of dielectric layer 350 is selected from least one of common ink, UV gloss oil, organic silicone oil and anodized aluminium.In bonding part 325 setting dielectric layers 340 facilitate so as to reduce cohesive force at the position of setting dielectric layer 350 by the substrate of this position Layer 310 detaches the gap to be formed and be entered for extraneous gas with substrate layer 320.The width in gap is 1mm~50mm.

Marker 330 is carbon dioxide sensitivity marker, oxygen sensitive marker, acid-sensitive marker or the instruction of alkali sensitivity Layer.

Marker 330 is contained in the receiving space of host body 340.Marker 330 is including adsorbent and is adsorbed on absorption The indication composition of body.Carrier of the adsorbent as carrying indication composition, has micropore property to adsorb indication composition. The pH value of adsorbent itself is in neutrality, so as to avoid impacting indication composition.The material of adsorbent is polytetrafluoro Ethylene microporous barrier, glass fibre porous film, microporous polypropylene membrane, pure pulp fibres, nylon fiber or cloth need to illustrate certainly , the material that any pH value is in neutrality, and can absorb liquid through capillary action all can serve as the material of adsorbent.Absorption The thickness of body is 1 μm~1000 μm, and the average pore size of adsorbent micropore is 1nm~5000nm.

Indication composition is carbon dioxide sensitivity indication composition, oxygen sensitive indication composition, acid-sensitive instruction combination Object or alkali sensitivity indication composition.

Protective layer 370 is laminated in 320 surface of substrate layer to protect substrate layer 320.Protective layer 370 can be protection oil reservoir or guarantor Cuticular layer.The material of protective layer 370 in water-based gloss oil, aqueous mute oil, UV gloss oil PET film and PP films at least one Kind.

Adhesive layer 380 is formed in a side surface of the basal layer 310 far from marker 330.Adhesive layer 380 is for referring to discoloration Showing device 300 is adhered to the material of the surface adhesive layer 380 of other articles in acrylic resin, pressure sensitive adhesive and polyurethane It is at least one.

Peeling layer 385 is adhered to the surface of adhesive layer 380.Preferably, peeling layer 385 for glassine paper or is coated with silicone oil Paper, so as to the sur-face peeling by peeling layer 385 from adhesive layer 380.

Starter 390 is used to open the enclosure space of the formation of host body 340, and extraneous gas is made to enter host body 340. In embodiment illustrated, starter 390 is a handgrip for facilitating gripping.Starter 390 corresponds to substrate layer 320 The edge of the position of dielectric layer 350 connects.To by pullling starter 390, give 320 1 upward effects of substrate layer Power, since the presence of dielectric layer 350 reduces the cohesive force of the bonding part 325 at 350 place position of dielectric layer, in setting dielectric layer 350 position is opened easily, and a breathable gap occurs, so that extraneous gas enters host body by gap 340 inside, carbon dioxide sensitization time instruction device 300 are activated.

In the illustrated embodiment, starter 390 is rectangular patch, is two-layer structure, first layer and substrate layer 320 It is integrally formed, the second layer is integrally formed with protective layer 370, and starter 390 extends outwardly from the edge of substrate layer 320.

In the illustrated embodiment, starter 390 and the junction of substrate layer 320 and protective layer 370 are formed with pressure Trace 392 is held so that starter 390 tilts slightly to the direction far from basal layer 310 with facilitating.

Above-mentioned carbon dioxide sensitization time instruction device 300 can easily adjust discoloration by adjusting the size in gap Period；In use, gently pullling starter 390,320 1 upward active forces of substrate layer are given, due to depositing for dielectric layer 350 In the cohesive force for the bonding part 325 for reducing 350 place position of dielectric layer, it is opened easily in the position of setting dielectric layer 350, There is a breathable gap, so that extraneous gas enters the inside of host body 340 by gap, carbon dioxide is sensitive Time-indicating arrangement 300 is activated, and external gas enters the inside of host body 340, air and the finger being attached on adsorbent Show that composition reacts, the color of marker is made to change, after color change cycle and the product of marker 330, which are opened, to be packed Shelf-life it is consistent when, people can by compare intuitively draw the following conclusions：When the close starting face of the color that marker is shown When color, show that product is very fresh, can be safe to use, when the color that marker is shown is close with intermediate colors, show product A period of time is placed, does not go bad, should use as early as possible, when the color that marker is shown is close with terminal colour, shows product It is rotten, it should not be continuing with.The marker of carbon dioxide sensitization time instruction device is prepared by adsorbing, and technique is relatively easy.

Carbon dioxide sensitization time instruction device 300 can coordinate individual colorimetric card to use, or in the specification of product Middle printing colorimetric card, colorimetric card provide reference color or other information.

Referring to Fig. 6, the structure of the carbon dioxide sensitization time instruction device 400 of an embodiment is sensitive with carbon dioxide The structure of time-indicating arrangement 200 is roughly the same, and carbon dioxide sensitization time instruction device 400 includes basal layer 410, substrate layer 420, marker 430, protective layer 470, adhesive layer 480, peeling layer 485 and starter 490, difference is, carbon dioxide Sensitization time instruction device 400 does not include comparing layer, and other structures are identical as the structure of sensitive discoloration instruction device 200.

Basal layer 410 is for carrying marker 430.Basal layer 410 has good air-tightness, gas can be prevented to penetrate Basal layer 410.The material of basal layer 410 be polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET) or Surface recombination has the composite material of above-mentioned material.Pass through the side such as printing or compound opaque material in one of the embodiments, Method sets basal layer 410 to non-transparent material.Certainly, it should be noted that the material of basal layer 410 is not limited to above-mentioned material Material, other materials with good hot sticky performance and air-tightness all can serve as the material of basal layer 410.

Substrate layer 420 is used to cooperatively form the host body 440 for accommodating marker 430 with basal layer 410.Substrate layer 420 have good transparency, so as to observe the face for being housed in the marker 430 in host body 440 by substrate layer 420 Color.The material of substrate layer 420 is polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET) or surface recombination There is the composite transparent material of above-mentioned material.Certainly, it should be noted that the material of substrate layer 420 is not limited to above-mentioned material, other Material with the good transparency, hot sticky performance and air-tightness all can serve as the material of substrate layer 420.

Basal layer 410 and substrate layer 420 are stacked together, marker 430 between basal layer 410 and substrate layer 420, And cover the middle part of basal layer 410.The fringe region of basal layer 410 and the fringe region of substrate layer 420 are sealed to be formed Bonding part 425, to formed one with good air-tightness, can prevent gas by closed receiving space.Wherein In one embodiment, the contact surface material identical of substrate layer 420 and basal layer 410, when to hot melt adhesive, identical material exists Gluing-free can be realized under high temperature by intermolecular fusion.Certainly, in other examples, the marginal zone of basal layer 410 The fringe region of domain and substrate layer 420 can be adhesively-bonded together to form bonding part 425 by glue.

Marker 430 is carbon dioxide sensitivity marker, oxygen sensitive marker, acid-sensitive marker or the instruction of alkali sensitivity Layer.

Marker 430 is contained in the receiving space of host body 440.Marker 430 is including adsorbent and is adsorbed on absorption The indication composition of body.Carrier of the adsorbent as carrying indication composition, has micropore property to adsorb indication composition. The pH value of adsorbent itself is in neutrality, so as to avoid adversely affecting indication composition.The material of adsorbent is poly- Tetrafluoroethene microporous barrier, glass fibre porous film, microporous polypropylene membrane, pure pulp fibres, nylon fiber or cloth need certainly Illustrate, any pH value is in neutrality, and the material that can absorb liquid through capillary action all can serve as the material of adsorbent. The thickness of adsorbent is 1 μm~2000 μm, and the average pore size of adsorbent micropore is 1nm~5000nm.

Protective layer 470 is laminated in the surface of substrate layer 420 to protect substrate layer 420.Protective layer 470 can be protection oil reservoir or Protection film layer.The material of protective layer 470 in water-based gloss oil, aqueous mute oil, UV gloss oil PP films and PET film at least one Kind.

Adhesive layer 480 is formed in a side surface of the basal layer 410 far from marker 430.Adhesive layer 480 is for referring to discoloration Showing device 400 is adhered to the material of the surface adhesive layer 480 of other articles in acrylic resin, pressure sensitive adhesive and polyurethane It is at least one.

Peeling layer 485 is adhered to the surface of adhesive layer 480.Preferably, peeling layer 485 for glassine paper or is coated with silicone oil Paper, so as to the sur-face peeling by peeling layer 485 from adhesive layer 480.

Starter 490 is used to open the enclosure space of the formation of host body 440, and extraneous gas is made to enter host body 440.

In the illustrated embodiment, starter 490 includes venthole 492 and the sealing for closing venthole 492 Part 494.Venthole 492 is opened in host body 440, enters for extraneous gas for opening host body 440, specifically, ventilation Protective layer 470 and substrate layer 420 are run through in hole 492, so as to so that extraneous gas enters the inside of host body 440, carbon dioxide Sensitization time instruction device 400 is activated.492 aperture of venthole is 1mm~15mm.

Sealing element 494 is Obstruct membrane, the material of sealing element 494 be selected from PET film, PP films, PVC film, aluminizer and comprising At least one of composite material of above-mentioned material.Sealing element 494 affixes to protective layer 470 by bonding glue-line 496 and closes Venthole 492.In the illustrated embodiment, 494 one end of sealing element extends to form the handgrip for facilitating gripping.In use, catching Handgrip removes sealing element 494, to open the inside that venthole 492 makes extraneous gas enter host body 440.

Above-mentioned carbon dioxide sensitization time instruction device 400 can easily adjust change by adjusting the diameter of venthole The color period；In use, gently pullling starter 490, sealing element 494 is removed, opens venthole 492 so that external gas Body enters the inside of host body 440 by gap, and carbon dioxide sensitization time instruction device 400 is activated, external gas into The inside for entering host body 440 reacts with the indication composition being attached on adsorbent, and the color of marker changes, When shelf-life after the color change cycle of marker 430 and product open packaging is consistent, people can by compare reference color and The color that observation window is shown intuitively is drawn the following conclusions：When the color that observation window is shown is close to starting color, show product It is very fresh, can be safe to use, when the color that observation window is shown is close with intermediate colors, show that product has placed a period of time, Do not go bad, should use as early as possible, when the color that observation window is shown is close with terminal colour, shows that product has gone bad, should not continue It uses.The marker of carbon dioxide sensitization time instruction device is prepared by adsorbing, and technique is relatively easy.

Carbon dioxide sensitization time instruction device 400 can coordinate individual colorimetric card to use, or in the specification of product Middle printing colorimetric card.

Hereinafter, being illustrated in connection with specific embodiments.

Embodiment 1

The carbon dioxide sensitization time instruction device structure of embodiment 1 is as shown in figure 3, including basal layer 210, substrate layer 220, marker 230, comparison layer 260, protective layer 270, adhesive layer 280, peeling layer 285 and starter 290.

Wherein, the material of basal layer 210 is the composite material of common PET/aluminium foil/heat-sealing PET, the material of substrate layer 220 For the composite material of common PET/heat-sealing PET, when heat-sealing, the heat-sealing PET of basal layer is contacted with the heat-sealing PET material of substrate layer, The hot melt adhesive at the temperature of heat-sealing version and pressure effect.Marker 230 includes adsorbent and the key group for being adsorbed on adsorbent Object is closed, the material of adsorbent is microporous teflon membran, and thickness is 10 μm, and the average pore size of adsorbent micropore is 30nm, is referred to Show that composition includes 0.01 part of Bromothymol blue and 0.1 part of tetrabutylammonium hydroxide.

The fringe region of basal layer 210 and the fringe region of substrate layer 220 are sealed to form bonding part 225.

It includes navy blue, light blue and three kinds of colors of yellow to compare layer 260, provides the starting face of indication composition respectively Color, intermediate colors and terminal colour.

The material of protective layer 270 is PET film, and the material of adhesive layer 280 is pressure sensitive adhesive, and the material of peeling layer 285 is glass Glass paper.

The material of a diameter of 5mm of the venthole of starter 290, sealing element 294 are PET film, and sealing element 294 passes through UV Glue is adhered to 270 surface of protective layer.

In use, opening sealing element 294, venthole is opened, carbon dioxide sensitization time instruction device is activated.It is adsorbed with It indicates that the color of the marker 230 of component gradually becomes light blue from navy blue, eventually becomes yellow, color change cycle is 2 days.By It is not contacted (except sour gas) with any non-neutral substance in the pH value sensitive dye of marker, reaction process is not by uncontrollable Factor is interfered, and discoloration clocking effect accuracy substantially enhances.

Traditional instruction device is needed using instruction ink printing instruction layer to meet the printing adaptability requirement of ink A large amount of binder and a small amount of auxiliary agent are added in ink, there are two the factors for influencing ink discoloration：First, passing through absorption Sour gas carbon dioxide in air changes colour, second is that, non-neutral substance is influenced to change colour in by ink composition.Experiment It proves, binder and auxiliary agent pH value cause both sides to influence in non-neutral (mostly weakly acidic)：On the one hand, due to adding A large amount of binder is entered, has caused to indicate that component is diluted, on the other hand lighter indicates the initial ph value of component because of two Carbon adsorbing material is aoxidized in alkalinity, after binder and the auxiliary agent (mostly weakly acidic) of non-neutral is added, ink entirety pH value drop Low, the lighter of pH value sensitive dye, both sides factor causes ink colour saturation relatively low jointly, and ink is light blue after printing Color, that is, the color for being in " fresh " state are light blue.Indicate that component absorbs sour gas dioxy after activation, in transformation region ink Change carbon, color is caused to change, since accounting is more than 70% to binder in cured printing ink, pH value (faintly acid) Determine that the terminal colour of ink is light yellow, i.e., ink can only fade to light yellow from light blue, and color change interval is small.By above-mentioned Compare it is found that the color change interval of instruction accuracy and instruction device can be greatly improved using instruction device provided by the invention.

Embodiment 2

The carbon dioxide sensitization time instruction device structure of embodiment 2 is as shown in figure 3, including basal layer 210, substrate layer 220, marker 230, comparison layer 260, protective layer 270, adhesive layer 280, peeling layer 285 and starter 290.

Wherein, the material of basal layer 210 is common PP/ aluminium foils/heat-sealing CPP composite materials, and the material of substrate layer 220 is general Logical PP/ seals CPP composite materials, when heat-sealing, the heat-sealing CPP materials of the heat-sealing CPP and substrate layer of basal layer, in heat-sealing version Temperature and the lower hot melt adhesive of pressure effect.Marker 230 includes adsorbent and the indication composition for being adsorbed on adsorbent, absorption The material of body is glass fibre porous film, and thickness is 2000 μm, and the average pore size of adsorbent micropore is 5000nm, indication composition Sodium hydroxide including 10 parts phenol red and 80 parts.

It includes three kinds of peony, light red and yellow colors to compare layer 260, provides the starting face of indication composition respectively Color, intermediate colors and terminal colour.

The material of protective layer 270 is PP films, and the material of adhesive layer 280 is polyurethane, and the material of peeling layer 285 is glass Paper.

The material of a diameter of 10mm of the venthole of starter 290, sealing element 294 are PVC film.Sealing element 294 is logical It crosses UV glue and is adhered to 270 surface of protective layer.

Color change cycle is 90 days.

Embodiment 3

The carbon dioxide sensitization time instruction device structure of embodiment 3 is as shown in figure 3, including basal layer 210, substrate layer 220, marker 230, comparison layer 260, protective layer 270, adhesive layer 280, peeling layer 285 and starter 290.

Wherein, the material of basal layer 210 is LDPE/ aluminium foils/PP composite materials, and the material of substrate layer 220 is multiple for LDPE/PP Condensation material, when heat-sealing, the LDPE of basal layer and the LDPE materials of substrate layer, the heat at the temperature of heat-sealing version and pressure effect Fusible conjunction.Marker 230 includes adsorbent and the indication composition for being adsorbed on adsorbent, and the material of adsorbent is that glass fibre is micro- Pore membrane, thickness are 1 μm, and the average pore size of adsorbent micropore is 1nm, indication composition include 10 parts m-cresol purple and 40 parts Sodium bicarbonate.

It includes three kinds of darkviolet, lilac and yellow colors to compare layer 260, provides the starting face of indication composition respectively Color, intermediate colors and terminal colour.

The material of protective layer 270 is water-based gloss oil, and the material of adhesive layer 280 is acrylic resin, the material of peeling layer 285 For glassine paper.

The material of a diameter of 3mm of the venthole of starter 290, sealing element 294 are aluminizer.Sealing element 294 passes through Pressure-sensitive glue is adhered to 270 surface of protective layer.

Color change cycle is 20 days.

Embodiment 4

The carbon dioxide sensitization time instruction device structure of embodiment 4 is as shown in fig. 6, including basal layer 410, substrate layer 420, marker 430, protective layer 470, adhesive layer 480, peeling layer 485 and starter 490.

Wherein, the material of basal layer 410 is HDPE/ aluminium foils/PET composite material, and the material of substrate layer 420 is HDPE/PET Composite material, when heat-sealing, the HDPE of basal layer is contacted with the HDPE material of substrate layer, at the temperature of heat-sealing version and pressure effect Hot melt adhesive.Marker 430 includes adsorbent and the indication composition for being adsorbed on adsorbent, and the material of adsorbent is polytetrafluoroethyl-ne Alkene microporous barrier, thickness are 500 μm, and the average pore size of adsorbent micropore is 2000nm, and indication composition includes 10 parts of dimethyl diaminophenazine chloride And 50 parts of tetrabutylammonium hydroxide.

The fringe region of basal layer 410 and the fringe region of substrate layer 420 are sealed to form bonding part 425.

The material of protective layer 470 is PET film, and the material of adhesive layer 480 is pressure sensitive adhesive, and the material of peeling layer 485 is glass Glass paper.

The material of a diameter of 4mm of the venthole of starter 490, sealing element 494 are PET film.Sealing element 494 passes through UV Glue is adhered to 470 surface of protective layer.

Color change cycle is 30 days.

Compare card includes buff, light yellow and red three kinds of colors, respectively the starting color of offer indication composition, in Between color and terminal colour.

Embodiment 5

The structure of the carbon dioxide sensitivity discoloration instruction device of embodiment 5 is roughly the same with embodiment 1, and difference is, A diameter of 8mm of venthole, color change cycle are 1 day.

Embodiment 6

The structure of the carbon dioxide sensitivity discoloration instruction device of embodiment 6 is roughly the same with embodiment 2, and difference is, A diameter of 15mm of venthole, color change cycle are 60 days.

Embodiment 7

The structure of the carbon dioxide sensitivity discoloration instruction device of embodiment 7 is roughly the same with embodiment 3, and difference is, A diameter of 8mm of venthole, color change cycle are 8 days.

Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, it is all considered to be the range of this specification record.

Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.

Claims

1. a kind of carbon dioxide sensitization time instruction device, which is characterized in that including：

Marker, marker include adsorbent and the indication composition that is adsorbed in the adsorbent, the indication composition with Mass fraction meter, including 0.01 part~20 parts of pH indicator and 0.1 part~80 parts of carbon dioxide absorbing material, the pH PH indicator is selected from m-cresol purple, thymolphthalein, o-cresolphthalein, bromthymol blue, cresol red, cetyltrimethyl ammonium sun At least one of ion, dimethyl diaminophenazine chloride, phenol red, rhodamine, Sulforhodamine 101 and thymol blue, the carbon dioxide adsorption Material is selected from least one of quaternary ammonium salt, sodium hydroxide, lithium hydroxide, barium hydroxide, potassium hydroxide and sodium bicarbonate；

Substrate layer, covers the instruction layer surface, and the substrate layer is transparent material, the side of the substrate layer and the basal layer Edge is tightly connected the host body to be formed and can obstruct gas, and the marker is contained in the enclosure space of the host body；

Starter, including it is opened in the venthole of substrate layer and the sealing element for closing the venthole, the venthole Through substrate layer, so as to so that extraneous gas enters the inside of host body；

The venthole aperture is 3mm~15mm；

Further include the comparison layer for being formed in the base material layer surface, the comparison layer includes observation window and comparison portion, observation window position In comparing the middle part of layer in order to observing the color of marker, observation window face marker；

The venthole is through the substrate layer and the comparison portion for comparing layer.

2. carbon dioxide sensitization time instruction device according to claim 1, which is characterized in that the indication composition is also Include 10 parts~100 parts of solvent, the solvent is selected from least one of ethyl alcohol, methanol, isopropanol, acetone and water.

3. carbon dioxide sensitization time instruction device according to claim 1, which is characterized in that the edge of the substrate layer Region and the fringe region of the basal layer are adhesively-bonded together to form bonding part.

4. carbon dioxide sensitization time instruction device according to claim 1, which is characterized in that the sealing element passes through viscous Close the surface that glue-line affixes to the substrate layer.

5. carbon dioxide sensitization time instruction device according to claim 1, which is characterized in that the comparison portion provides ginseng Examine color.

6. carbon dioxide sensitization time instruction device according to claim 5, which is characterized in that further include be laminated in it is described The surface for comparing layer is used to protect the protective layer for comparing layer.

7. carbon dioxide sensitization time instruction device according to claim 6, which is characterized in that the venthole runs through institute Protective layer is stated, the sealing element affixes to the surface of the protective layer by bonding glue-line.

8. carbon dioxide sensitization time instruction device according to claim 1, which is characterized in that the thickness of the adsorbent It it is 1 μm~2000 μm, the average pore size of the micropore of the adsorbent is 1nm~5000nm.

9. carbon dioxide sensitization time instruction device according to claim 1, which is characterized in that further include be laminated in it is described The adhesive layer of a side surface of the basal layer far from the marker and the peeling layer for being adhered to the gluing layer surface.