CN106153619A - Carbon dioxide sensitivity complexion changed instruction device - Google Patents

Abstract

The present invention relates to a kind of carbon dioxide sensitivity complexion changed instruction device.A kind of carbon dioxide sensitivity complexion changed instruction device, including: marker, marker includes adsorbate and absorption indication composition in described adsorbate；Basal layer, is used for carrying described marker, and described marker is laminated in the surface of described basal layer；Substrate layer, covers described marker surface, and described substrate layer is transparent material, and described substrate layer is connected formation with the edge seal of described basal layer can intercept the host body of gas, and described marker is contained in the closing space of described host body；Starter, is connected with the edge of described substrate layer, and described starter can drive described substrate layer to move to the direction away from described basal layer, makes the edge of described substrate layer and described basal layer be unfolded into supplied gas and enters the gap in described closing space.The marker of above-mentioned carbon dioxide sensitivity complexion changed instruction device is prepared by absorption, and technique is relatively simple.

Description

Carbon dioxide sensitivity complexion changed instruction device

Technical field

The present invention relates to a kind of carbon dioxide sensitivity complexion changed instruction device.

Background technology

General product all has the perishable products such as useful life or shelf-life, especially food, beverage and medicine It is susceptible to when storing putrid and deteriorated, in order to reduce oxygen in packaging, it is to avoid rotten under oxygen atmosphere, generally uses vacuum Packaging or controlled atmospheric packing, and in outer package, print the date of production and shelf-life judge the most expired for people.So And, as fruit product packaging is opened or begins to use, the most effectively record and open or the use time is particularly important.

Existing carbon dioxide sensitivity complexion changed instruction device includes basal layer, is formed at the marker of described substrate surface And protective layer, marker includes instruction unit and reference section, and instruction unit is prepared by printing, protective layer be covered in instruction unit surface with Instruction unit is protected, along with product uses the increase of time, instruction unit can prolongation over time progressively with in air Carbon dioxide reacts, thus the color that pH indicator shows can produce change, according to color and the reference section pair of instruction unit Than the use time or the opening time that may determine that product.Protective layer covers on the surface of marker, and marker is played protection Effect, need possess good breathability so that extraneous gas by protective layer enter marker react, while in order to Avoid protective layer on the impact with instruction unit variable color, generally select the pH value material in neutrality as the material of protective layer.

But, protective layer covers on the surface of marker, plays a protective role marker, needs possess good breathing freely Property, so that extraneous gas enters marker by protective layer and reacts, become with instruction unit in order to avoid protective layer pair simultaneously Color adversely affects, and generally selects the pH value material in neutrality as the material of protective layer.But the gas transmission rate of protective layer The color change cycle of time-indicating arrangement can be produced impact, the gas transmission rate adjusting protective layer is the most difficult.

Summary of the invention

Based on this, it is necessary to provide a kind of convenient carbon dioxide sensitivity complexion changed instruction device adjusting color change cycle.

A kind of carbon dioxide sensitivity complexion changed instruction device, including:

Marker, marker includes adsorbate and absorption indication composition in described adsorbate, and described instruction is combined Thing is in terms of mass fraction, including 0.01 part～the pH of 20 parts and 0.1 part～the carbon dioxide absorbing material of 80 parts, institute State pH selected from m-cresol purple, thymolphthalein, o-cresolphthalein, bromthymol blue, cresol red, cetyl trimethyl At least one in ammonium cation, dimethyl diaminophenazine chloride, phenol red, rhodamine, Sulforhodamine 101 and thymol blue, described carbon dioxide At least one in quaternary ammonium salt, sodium hydroxide, Lithium hydrate, barium hydroxide, potassium hydroxide and sodium bicarbonate of adsorbing material；

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

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

Starter, is connected with the edge of described substrate layer, and described starter can drive described substrate layer to away from institute State the direction motion of basal layer, make described substrate layer and the edge of described basal layer be unfolded into supplied gas and enter described closing sky Between gap.

Wherein in an embodiment, described indication composition also includes 10 parts～the solvent of 100 parts, and described solvent is selected from At least one in ethanol, methanol, isopropanol, acetone and water.

Wherein in an embodiment, the marginal area of described substrate layer is bonded in one with the marginal area of described basal layer Rise and form bonding part.

Wherein in an embodiment, described carbon dioxide sensitivity complexion changed instruction device also includes for reducing bonding part portion The dielectric layer of subregion cohesive force, described dielectric layer is located at described bonding part, the edge of the described dielectric layer described substrate layer of covering The part surface of the marginal area of region or described basal layer amasss, and from described bonding part away from the edge of described marker to institute Stating bonding part to extend near the edge of described marker, described starter and described substrate layer correspond to the position of dielectric layer Edge connects.

Wherein in an embodiment, the material of described dielectric layer selected from selected from common ink, UV gloss oil, organic silicone oil and At least one in anodized aluminium.

Wherein in an embodiment, described starter is for convenience of the handgrip gripped, described starter and described base Sheet material layers is one-body molded, stretches out from the edge in the region that described substrate layer is provided with described dielectric layer.

Wherein in an embodiment, described starter is formed with impression with the junction of described substrate layer.

Wherein in an embodiment, also including the comparison layer being formed at described substrate layer surface, described comparison layer includes Observation window and comparison portion, described observation window corresponds to described marker, and described comparison portion provides reference color or other information.

Wherein in an embodiment, also include that the surface being laminated in described comparison layer is for protecting the guarantor of described comparison layer Sheath.

Wherein in an embodiment, also include the glue being laminated in described basal layer away from a side surface of described marker Adhesion coating and adhere to the peel ply on described adhesive layer surface.

Above-mentioned carbon dioxide sensitivity complexion changed instruction device, can adjust variable color week easily by the size adjusting gap Phase；Marker is by adsorbate internal adsorption indication composition, it is not necessary to adding binding agent etc., indicating effect is the most accurate； During use, pullling starter gently, to one active force upwards of substrate layer, the edge of substrate layer and described basal layer is opened Formed supplied gas enter described closing space gap so that extraneous gas by gap enter host body inside, two Carbonoxide sensitivity complexion changed instruction device is activated, and outside carbon dioxide enters the inside of host body, contained by air Carbon dioxide reacts with the indication composition being attached on adsorbate, in indication composition, and the carbon dioxide of alkalescence After absorbing material such as TBAH absorbs sour gas carbon dioxide, its pH value reduces, pH such as bromine hundred In fragrant phenol is blue along with pH value reduces, color gradient occurs, gradually become light blue from navy blue, and eventually become yellow, work as instruction The color change cycle of layer open with product the shelf-life after packaging consistent time, people can pass through comparison reference color and observation window and show Color be concluded that intuitively when the color that observation window shows is close to starting color, show that product is the freshest, can put The heart uses, when the color that observation window show and intermediate colors close to time, show that product is placed a period of time, do not go bad, should use up Fast use, when the color that observation window show and terminal colour close to time, show that product is the most rotten, should not be continuing with；Above-mentioned two The marker of carbonoxide sensitivity complexion changed instruction device is prepared by absorption, and technique is relatively easy.

Accompanying drawing explanation

Fig. 1 is the structural representation of the carbon dioxide sensitivity complexion changed instruction device of an embodiment；

Fig. 2 is comparison layer and the part-structure signal of starter of the carbon dioxide sensitivity complexion changed instruction device in Fig. 1 Figure；

Fig. 3 is the structural representation of the carbon dioxide sensitivity complexion changed instruction device of another embodiment；

Fig. 4 is comparison layer and the part-structure signal of starter of the carbon dioxide sensitivity complexion changed instruction device in Fig. 3 Figure；

Fig. 5 is the structural representation of the carbon dioxide sensitivity complexion changed instruction device of another embodiment；

Fig. 6 is the structural representation of the carbon dioxide sensitivity complexion changed instruction device of another embodiment.

Detailed description of the invention

Mainly in combination with specific embodiment and accompanying drawing, carbon dioxide sensitivity complexion changed instruction device is made further details of below Explanation.

Referring to Fig. 1, the carbon dioxide sensitivity complexion changed 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, peel ply 185 and starter 190.

Basal layer 110 is used for carrying marker 130.Basal layer 110 has good air-tightness, can stop gas permeation Basal layer 110.The material of basal layer 110 be polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET) or Surface recombination has the composite of above-mentioned material.Composite can be the composite ("/" of common PET/aluminium foil/heat-sealing PET Represent stacking, lower with), common PP/ aluminium foil/heat-sealing CPP composite, LDPE/ aluminium foil/PP composite, HDPE/ aluminium foil/PET Composite.Wherein CPP represents un-stretched polypropylene.Wherein in an embodiment, by printing or compound opaque material Etc. method, basal layer 110 is set to non-transparent material.Certainly, it should be noted that on the material of basal layer 110 is not limited to Stating material, other have a good hot-melt bonding performance and bubble-tight material can serve as the material of basal layer 110.

Substrate layer 120 is for cooperatively forming the host body 140 for housing marker 130 with basal layer 110.Substrate layer 120 have good transparency, such that it is able to observed the face of the marker 130 being housed in host body 140 by substrate layer 120 Color.Substrate layer 120 plays printing comparison layer 160 carrying effect, air barrier effect and the effect with basal layer 110 hot melt adhesive, Having good transparency, the material of substrate layer 120 is polyethylene (PE), polypropylene (PP), polyethylene terephthalate Or surface recombination has the composite transparent material of above-mentioned material (PET).Composite transparent material can be answering of common PET/heat-sealing PET Condensation material, common PP/ seal CPP composite, LDPE/PP composite, HDPE/PET composite.Certainly, explanation is needed , the material of substrate layer 120 is not limited to above-mentioned material, and other have good performance transparent, hot sticky and bubble-tight material Material can serve as the material of substrate layer 120.

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 marginal area of basal layer 110 and the marginal area of substrate layer 120 are sealed formation Bonding part 125, thus formed one there is good air-tightness, the receiving space of closing that gas can be stoped to pass through.In diagram Embodiment in, bonding part 125 be annular, there is certain width.Wherein in an embodiment, substrate layer 120 and base The contact surface material of bottom 110 is identical, thus during hot melt adhesive, identical macromolecular material at high temperature can be by intermolecular Merge and realize gluing-free.Certainly, in other examples, the marginal area of basal layer 110 and the marginal zone of substrate layer 120 Territory 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 located at bonding part 125, and covers The subregion at basal layer 110 edge, for reducing the cohesive force of bonding part 125 subregion.In the illustrated embodiment, Dielectric layer 150 covers the part surface of the marginal area of substrate layer 120 or the marginal area of basal layer 110 and amasss.Dielectric layer 150 is Lamellar, dielectric layer 150 is at the width of the bonding part 125 at the position at size and dielectric layer 150 place of the width of bonding part 125 Spending identical, dielectric layer 150 autoadhesion portion 125 extends to bonding part 125 away from marker 130 near the side of marker 130 Side.At least one in common ink, UV gloss oil, organic silicone oil and anodized aluminium of the material of dielectric layer 150.At bonding part 125 arrange dielectric layer 140, such that it is able to reduce cohesive force at the position arranging dielectric layer 150, convenient by the substrate of this position Layer 110 separates the gap formed for extraneous gas entrance 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 includes that adsorbate and absorption are in absorption The indication composition of body.Adsorbate, as the carrier of carrying indication composition, has micropore character to adsorb indication composition. Wherein in an embodiment, the pH value of adsorbate itself is neutrality, such that it is able to avoid impacting indication composition.Inhale 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 neutrality, and can be able to be made by the material of capillarity absorption liquid Material for adsorbate.The thickness of adsorbate is 1 μm～2000 μm, and the average pore size of adsorbate micropore is 1nm～5000nm.

The most in the illustrated embodiment, indication composition is carbon dioxide sensitivity indication composition.Indication composition By indicating liquid is adsorbed in adsorbate, obtain after drying.Indicating liquid includes pH, carbon dioxide adsorption material Material and solvent.Indication composition includes pH and carbon dioxide absorbing material.Wherein in an embodiment, indicator solution Body is in terms of mass fraction, including 0.01 part～the pH of 20 parts, 0.1 part～the carbon dioxide absorbing material of 80 parts and 10 Part～the solvent of 100 parts.Absorption obtains indicant combination, instruction combination after the indicating liquid solvent evaporation drying in adsorbate Thing includes 0.01 part～the pH of 20 parts and 0.1 part～the carbon dioxide absorbing material of 80 parts.Certainly, in other reality Executing in example, indication composition is identical with the composition of indicating liquid, including 0.01 part～the pH of 20 parts, 0.1 part ～the carbon dioxide absorbing material of 80 parts and 10 parts～the solvent of 100 parts, indicating liquid is adsorbed in adsorbate, it is not necessary to dry Dry.

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

The sour gas carbon dioxide that carbon dioxide absorbing material can absorb in air, and then change the pH of indication composition Value.Carbon dioxide absorbing material is in quaternary ammonium salt, sodium hydroxide, Lithium hydrate, barium hydroxide, potassium hydroxide and sodium bicarbonate At least one.Wherein in an embodiment, quaternary ammonium salt is selected from TBAH, tetraethyl ammonium hydroxide, tetramethyl At least one in ammonium hydroxide and TPAOH.

Solvent solubilized PH indicator and carbon dioxide absorbing material.Solvent selected from ethanol, methanol, isopropanol, acetone and At least one in water.It is appreciated that other solubilized pH and carbon dioxide absorbing material and pH value are in neutrality Fluent material all can be as solvent.

Wherein in an embodiment, indication composition is oxygen sensitive indication composition.Indication composition will be by referring to Show that liquid adsorption, in adsorbate, obtains after drying.Indicating liquid includes oxygen sensitive dyestuff, reducing agent and solvent.Instruction group Compound includes oxygen sensitive dyestuff and reducing agent.Indicating liquid is in terms of mass fraction, including 0.01 part～the oxygen sensitive of 20 parts Dyestuff, 0.01 part～the reducing agent of 50 parts and 10 parts～the solvent of 100 parts.Absorption indicating liquid solvent evaporation in adsorbate Obtaining indicant combination after drying, indication composition includes the oxygen sensitive dyestuff of 0.01 part～20 parts 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～ Oxygen sensitive dyestuff, 0.01 part～the reducing agent of 50 parts of 20 parts and 10 parts～the solvent of 100 parts, inhaling indicating liquid absorption In attached body, it is not necessary to be dried.

Oxygen sensitive dyestuff has two kinds of forms of oxidized and reduced, the most corresponding two kinds of different colors, oxidation state Oxygen sensitive dyestuff can be reduced agent reduction, be in reduction-state after reduction, the oxygen sensitive dyestuff of reduction-state can be sent out with oxygen Raw redox reaction, course of reaction generation color changes.Oxygen sensitive dye selection thiazine dye, oxazine dye, azine contaminate At least one in material, indophenol dye and bipseudoindoxyl dye.The most frequently used oxygen sensitive active dyestuff is methylene blue.Thiazine dye selects At least one in methylene blue, 3,7-Diaminophenothiazine. and toluidine blue.Oxazine dye is selected from "diazoresorcinol", Safranine O, phenosafraine and sky At least one in cordierite basket.At least one in m-cresol purple and reddish black A of azine dye.Indophenol dye is dichloro indigo Phenol.At least one in indigo and indigo-blue carmine of bipseudoindoxyl dye.Should be appreciated that other oxidation-reduction indicator also can be made Oxygen sensitive dyestuff for the present invention.

The oxygen sensitive dyestuff of the reducible oxidation state of reducing agent so that it is possess and the energy of oxygen generation redox reaction Power.Reducing agent is selected from dithionite, the oxidation product of dithionite, sulphite, boron hydrogen sodium sulfite, hydroboration At least one in sodium, glucose.Dithionite can be sodium dithionite.The oxidation product choosing of dithionite At least one in sodium thiosulfate and bisulfites freely.Bisulfites selected from sodium sulfite, Potassium acid sulfite and At least one in magnesium bisulfite.At least one in calcium sulfite, potassium sulfite and magnesium sulfite of sulphite.Should Working as understanding, the reducing agent of other reducible above-mentioned oxygen sensitive dyestuff also can be as the reducing agent of the present invention.And add excess Reducing agent can extend color change cycle.

Solvent is used for dissolved oxygen sensitive dye and reducing agent.In solvent selected from ethanol, methanol, isopropanol, acetone and water At least one.It is appreciated that other solubilized oxygen sensitive dyestuff and reducing agent and pH value all may be used in neutral fluent material As solvent.

Wherein in an embodiment, indication composition is acid-sensitive indication composition.Indicating liquid includes that pH value indicates Agent and solvent.Indication composition includes pH and volatile acid.Indication composition is by inhaling indicating liquid absorption In attached body, spray volatile acid after solvent seasoning and obtain.Indicating liquid is in terms of mass fraction, including 0.01 part～the pH value of 20 parts Indicator, 10 parts～the solvent of 100 parts.Absorption sprays 0.1 part～50 after the indicating liquid solvent evaporation drying in adsorbate Part volatile acid obtain indicant combination, indication composition includes 0.01 part～the pH of 20 parts and 0.1 part～50 The volatile acid of part.Certainly, in other embodiments, indication composition include 0.01 part～the pH of 20 parts, 10 parts ～the solvent of 100 parts and 0.1 part～the volatile acid of 50 parts, directly indication composition is adsorbed at adsorbate.

Wherein in an embodiment, indication composition also includes 0.05 part～the alkali of 30 parts.Alkali is selected from sodium hydroxide, hydrogen At least one in magnesium oxide, potassium hydroxide and Lithium hydrate.During preparation, alkali is mixed with other components with a small amount of water dissolution or By alkali dissolution the most in a solvent.

PH is to pH value sensitive, along with pH value change occurs color change.PH be selected between Cresol-purple (MCP), thymolphthalein, o-cresolphthalein, bromthymol blue (BTB), cresol red, cetyltrimethyl ammonium cation (CTA), at least one in dimethyl diaminophenazine chloride (NR), phenol red (PR), rhodamine (R6G) Sulforhodamine 101 and thymol blue.Should Understanding, other all can be as pH to the material of pH sensitive.

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 in acid, propanoic acid, butanoic acid and other higher carbon chain carboxylic acids.It is appreciated that other has volatile acid Matter also can be as volatile acid.

Solvent is used for dissolving pH.At least one in solvent selected from ethanol, methanol, isopropanol, acetone and water. It is appreciated that other solubilized pH and pH value all can be as solvents in neutral fluent material.

Alkali is for expanding the pH value excursion of instruction component, and after adding alkali in indicating liquid, its original ph is alkalescence, Spraying the volatile acid of excess after adsorption dry, volatile acid and highly basic reacts and generate strong base-weak acid salt, due to volatile acid and Alkali compares excess, and its pH value is acidity, and along with the volatilization of volatile acid, instruction component pH value gradually rises, when volatile acid is complete After full volatilization, instruction component is alkalescence because of strong base weak acid salt hydrolysis, and after i.e. adding alkali, the pH value excursion of instruction component can be from Acidity becomes alkalescence (not adding the instruction component pH value excursion of alkali for becoming neutral from acidity), makes the color of instruction component Change becomes apparent from.Alkali is at least one in the solubility highly basic such as sodium hydroxide, potassium hydroxide, magnesium hydroxide, Lithium hydrate.When So, it is added without alkali, uses alkaline adsorption body to may also function as identical effect.

Wherein in an embodiment, indication composition is alkali sensitivity indication composition.Indicating liquid includes that pH value indicates Agent and solvent.Indication composition includes pH and volatile base.Indication composition is by inhaling indicating liquid absorption In attached body, spray volatile base after solvent seasoning and obtain.Indicating liquid is in terms of mass fraction, including 0.01 part～the pH value of 20 parts Indicator and 10 parts～the solvent of 100 parts.Absorption sprays 0.1 part～50 after the indicating liquid solvent evaporation drying in adsorbate Part volatile base obtain indicant combination, indication composition includes 0.01 part～the pH of 20 parts and 0.1 part～50 The volatile base of part.Certainly, in other embodiments, indication composition include 0.01 part～the pH of 20 parts, 10 parts ～the solvent of 100 parts and 0.1 part～the volatile base of 50 parts, directly indication composition is adsorbed at adsorbate.

Wherein in an embodiment, indication composition also includes 0.05 part～the acid of 30 parts.Acid is selected from HCl, H₂SO₄And HNO₃In at least one.During preparation, acid adds with the form of hydrochloric acid, concentrated sulphuric acid or concentrated nitric acid, and number said before refers to It is effective ingredient (HCl, H in hydrochloric acid, concentrated sulphuric acid or concentrated nitric acid₂SO₄Or HNO₃) number, do not include the water wherein contained.

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

Volatile base has volatility, for changing the pH value of indication composition.Volatile base is selected from ammonia, hydroxide At least one in ammonium, propylamine, n-butylamine, n-hexylamine and 1-Aminooctane.Should be appreciated that other has volatile alkaline matter also Can be as volatile base.

Solvent is used for dissolving pH.At least one in solvent selected from ethanol, methanol, isopropanol, acetone and water. It is appreciated that other solubilized pH and pH value all can be as solvents in neutral fluent material.

Acid is for expanding the pH value excursion of instruction component, and after adding acid in indicating liquid, its original ph is acidity, Absorption indicating liquid sprays the volatile base of excess after drying, and volatile base and strong acid react generation strong acid weak base salt, owing to waving The property sent out alkali excess compared with acid, its pH value is alkalescence, and along with the volatilization of volatile base, instruction component pH value is gradually lowered, when waving After the property sent out alkali volatilizees completely, instruction component is acidity because of strong acid weak base salt hydrolysis, after i.e. adding acid, and the pH value change of instruction component Scope can become acid (not adding the instruction component pH value excursion of acid for becoming neutral from alkalescence) from alkalescence, makes instruction group The color change of part becomes apparent from.Certainly, it is added without acid, uses the adsorbate of acidity to serve the same role.

Please refer to Fig. 1 and Fig. 2, comparison layer 160 is formed at the surface of substrate layer 120.Comparison layer 160 includes observation window 162 and comparison portion 164.Observation window 162 is positioned at the middle part of comparison layer 160 so that observing the color of marker 130, in diagram In embodiment, observation window 162 is just to marker 130.In the illustrated embodiment, in the middle part of comparison layer 160, hollow out forms sight Examining window 162, certainly, in other embodiments, observation window 162 can be transparent material, it is not necessary to hollow out.Comparison portion 164 carries Color or other information for reference, the comparison as marker 130 identifies, and comparison portion 164 can be by printing on substrate layer 120 surface Scopiform becomes.Reference color can be the terminal colour of indication composition variable color, and certainly, reference color can also comprise 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 of marker 130 display is starting color, represent that carbon dioxide is quick The product of sense complexion changed instruction device 100 instruction is the freshest, when the color of marker 130 display is intermediate colors, represents and produces Product to use as early as possible, when the color of marker 130 display is terminal colour, represents that product is the most rotten.Certainly, as required, Reference color could be arranged to graduated colors.

Protective layer 170 is laminated in the surface of comparison layer 160 to protect comparison layer 160.Protective layer 170 can be formation protection or Protecting film layer.The material of protective layer 170 is selected from least in water-based gloss oil, the mute oil of aqueous, UV gloss oil PET film and PP thin film Kind.

Adhesive layer 180 is formed at the basal layer 110 side surface away from marker 130.Adhesive layer 180 is for referring to complexion changed Showing device 100 sticks to the surface of other article, and the material of adhesive layer 180 is in acrylic resin, pressure sensitive adhesive and polyurethane At least one.

Peel ply 185 sticks to the surface of adhesive layer 180.Preferably, peel ply 185 for cellophane or is coated with silicone oil Paper, such that it is able to by peel ply 185 from the sur-face peeling of adhesive layer 180.

Starter 190, for opening the closing space that host body 140 is formed, makes extraneous gas enter host body 140.? In embodiment illustrated, starter 190 is a convenient handgrip gripped.Starter 190 corresponds to substrate layer 120 The edge of the position of dielectric layer 150 connects.Thus, by pullling starter 190, to 120 1 effects upwards of substrate layer Power, reduces the cohesive force of the bonding part 125 at position, dielectric layer 150 place, is arranging dielectric layer due to the existence of dielectric layer 150 The position of 150 is opened easily, and a breathable gap occurs, so that extraneous gas enters host body by gap The inside of 140, carbon dioxide sensitivity complexion changed instruction device 100 is activated.

In the illustrated embodiment, starter 190 is rectangular patch, for three-decker, ground floor and substrate layer 120 One-body molded, second time is one-body molded with comparison layer 160, and third layer is one-body molded with protective layer 170, and starter 190 is from base The edge of sheet material layers 120 stretches out.

In the illustrated embodiment, starter 190 and substrate layer 120, comparison layer 160 and the connection of protective layer 170 Place is formed with impression 192, so that starter 190 tilts slightly to the direction away from basal layer 110, to facilitate gripping.

Above-mentioned carbon dioxide sensitivity complexion changed instruction device 100, can adjust variable color easily by the size adjusting gap Cycle；Marker is by adsorbate internal adsorption indication composition, it is not necessary to adding binding agent etc., indicating effect is relatively as the criterion Really；During use, pull starter 190 gently, to 120 1 active forces upwards of substrate layer, due to the existence of dielectric layer 150 Reduce the cohesive force of the bonding part 125 at position, dielectric layer 150 place, be opened easily in the position arranging dielectric layer 150, go out An existing breathable gap, so that extraneous gas enters the inside of host body 140, carbon dioxide sensitivity color by gap Becoming instruction device 100 to be activated, outside carbon dioxide enters the inside of host body 140, titanium dioxide contained in air Carbon gas reacts with the indication composition being attached on adsorbate, in indication composition, and the carbon dioxide absorption material of alkalescence After expecting that such as TBAH absorbs sour gas carbon dioxide, its pH value reduces, pH such as bromine thymol Blue along with pH value reduction generation color gradient, gradually become light blue from navy blue, and eventually become yellow, when marker 130 Color change cycle open with product the shelf-life after packaging consistent time, people can be shown by comparison reference color and observation window Color is concluded that intuitively when the color that observation window shows is close to starting color, shows that product is the freshest, can be relieved Use, when the color that observation window show and intermediate colors close to time, show that product is placed a period of time, do not go bad, should be as early as possible Use, when the color that observation window show and terminal colour close to time, show that product is the most rotten, should not be continuing with.Carbon dioxide The marker of sensitive complexion changed instruction device is prepared by absorption, and technique is relatively easy.

Need it is further noted that the variable color of marker 130 can be adjusted by the concentration of regulation indicating liquid composition Cycle, certainly, by thickness and the aperture of adsorbate micropore of regulation marker 130, such that it is able to control absorption at adsorbate The total amount of interior indication composition.By adjusting the cross-sectional width in air inlet gap, can indicate with regulation of carbon dioxide sensitivity complexion changed The size in the gap formed when device 100 starts, thus control the speed within air entrance, and then control color change cycle.

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

Basal layer 210 is used for carrying marker 230.Basal layer 210 has good air-tightness, can stop gas permeation Basal layer 210.The material of basal layer 210 be polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET) or Surface recombination has the composite of above-mentioned material.Composite can be the composite of common PET/aluminium foil/heat-sealing PET, general Logical PP/ aluminium foil/heat-sealing CPP composite, LDPE/ aluminium foil/PP composite, HDPE/ aluminium foil/PET composite material.Wherein one In individual embodiment, by methods such as printing or compound opaque materials, basal layer 210 is set to non-transparent material.Certainly, need Being noted that the material of basal layer 210 is not limited to above-mentioned material, other have good hot sticky performance and bubble-tight material Can serve as the material of basal layer 210.

Substrate layer 220 is for cooperatively forming the host body 240 for housing marker 230 with basal layer 210.Substrate layer 220 have good transparency, such that it is able to observed the face of the marker 230 being housed 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.Composite transparent material can be the composite of common PET/heat-sealing PET, common PP/ Heat-sealing CPP composite, LDPE/PP composite, HDPE/PET composite.Certainly, it should be noted that substrate layer 220 Material be not limited to above-mentioned material, other have good performance transparent, hot sticky and bubble-tight material can serve as base The material of sheet material layers 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 marginal area of basal layer 210 and the marginal area of substrate layer 220 are sealed formation Bonding part 225, thus formed one there is good air-tightness, the receiving space of closing that gas can be stoped to pass through.Wherein In one embodiment, substrate layer 220 is identical with the contact surface material of basal layer 210, thus during hot melt adhesive, identical material exists Gluing-free can be realized by intermolecular fusion under high temperature.Certainly, in other examples, the marginal zone of basal layer 210 The marginal area of territory 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 includes that adsorbate and absorption are in absorption The indication composition of body.Adsorbate, as the carrier of carrying indication composition, has micropore character to adsorb indication composition. Wherein in an embodiment, the pH value of adsorbate itself is neutrality, such that it is able to avoid causing indication composition negative shadow Ring.The material of adsorbate 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 neutrality, and can all may be used by the material of capillarity absorption liquid Using the material as adsorbate.

The most in the illustrated embodiment, indication composition is carbon dioxide sensitivity indication composition.Indication composition By indicating liquid is adsorbed in adsorbate, obtain after drying.Indicating liquid includes pH, carbon dioxide adsorption material Material and solvent.Indication composition includes pH and carbon dioxide absorbing material.Wherein in an embodiment, indicator solution Body is in terms of mass fraction, including 0.01 part～the pH of 20 parts, 0.1 part～the carbon dioxide absorbing material of 80 parts and 10 Part～the solvent of 100 parts.Absorption obtains indicant combination, instruction combination after the indicating liquid solvent evaporation drying in adsorbate Thing includes 0.01 part～the pH of 20 parts and 0.1 part～the carbon dioxide absorbing material of 80 parts.Certainly, in other reality Executing in example, indication composition is identical with the composition of indicating liquid, including 0.01 part～the pH of 20 parts, 0.1 part ～the carbon dioxide absorbing material of 80 parts and 10 parts～the solvent of 100 parts, indicating liquid is adsorbed in adsorbate, it is not necessary to dry Dry.

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

The sour gas carbon dioxide that carbon dioxide absorbing material can absorb in air, and then change the pH of indication composition Value.Carbon dioxide absorbing material is in quaternary ammonium salt, sodium hydroxide, Lithium hydrate, barium hydroxide, potassium hydroxide and sodium bicarbonate At least one.Wherein in an embodiment, quaternary ammonium salt is selected from TBAH, tetraethyl ammonium hydroxide, tetramethyl At least one in ammonium hydroxide and TPAOH.

Solvent solubilized PH indicator and carbon dioxide absorbing material.Solvent selected from ethanol, methanol, isopropanol, acetone and At least one in water.It is appreciated that other solubilized pH and carbon dioxide absorbing material and pH value are in neutrality Fluent material all can be as solvent.

Wherein in an embodiment, indication composition is oxygen sensitive indication composition.Indication composition will be by referring to Show that liquid adsorption, in adsorbate, obtains after drying.Indicating liquid includes oxygen sensitive dyestuff, reducing agent and solvent.Instruction group Compound includes oxygen sensitive dyestuff and reducing agent.Indicating liquid is in terms of mass fraction, including 0.01 part～the oxygen sensitive of 20 parts Dyestuff, 0.01 part～the reducing agent of 50 parts and 10 parts～the solvent of 100 parts.Absorption indicating liquid solvent evaporation in adsorbate Obtaining indicant combination after drying, indication composition includes the oxygen sensitive dyestuff of 0.01 part～20 parts 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～ Oxygen sensitive dyestuff, 0.01 part～the reducing agent of 50 parts of 20 parts and 10 parts～the solvent of 100 parts, inhaling indicating liquid absorption In attached body, it is not necessary to be dried.

Oxygen sensitive dyestuff has two kinds of forms of oxidized and reduced, the most corresponding two kinds of different colors, oxidation state Oxygen sensitive dyestuff can be reduced agent reduction, be in reduction-state after reduction, the oxygen sensitive dyestuff of reduction-state can be sent out with oxygen Raw redox reaction, course of reaction generation color changes.Oxygen sensitive dyestuff may select thiazine dye, oxazine dye, azine At least one in dyestuff, indophenol dye and bipseudoindoxyl dye.The most frequently used oxygen sensitive active dyestuff is methylene blue.Thiazine dye At least one in methylene blue, 3,7-Diaminophenothiazine. and toluidine blue.Oxazine dye selected from "diazoresorcinol", Safranine O, phenosafraine and At least one in celestine blue.At least one in m-cresol purple and reddish black A of azine dye.Indophenol dye is dichloro indigo Phenol.At least one in indigo and indigo-blue carmine of bipseudoindoxyl dye.Should be appreciated that other oxidation-reduction indicator also can be made Oxygen sensitive dyestuff for the present invention.

The oxygen sensitive dyestuff of the reducible oxidation state of reducing agent so that it is possess and the energy of oxygen generation redox reaction Power.Reducing agent is selected from dithionite, the oxidation product of dithionite, sulphite, boron hydrogen sodium sulfite, hydroboration At least one in sodium, glucose.Dithionite can be sodium dithionite.The oxidation product choosing of dithionite At least one in sodium thiosulfate and bisulfites freely.Bisulfites selected from sodium sulfite, Potassium acid sulfite and At least one in magnesium bisulfite.At least one in calcium sulfite, potassium sulfite and magnesium sulfite of sulphite.Should Working as understanding, the reducing agent of other reducible above-mentioned oxygen sensitive dyestuff also can be as the reducing agent of the present invention.And add excess Reducing agent can extend color change cycle.

Solvent is used for dissolved oxygen sensitive dye and reducing agent.In solvent selected from ethanol, methanol, isopropanol, acetone and water At least one.It is appreciated that other solubilized oxygen sensitive dyestuff and reducing agent and pH value all may be used in neutral fluent material As solvent.

Wherein in an embodiment, indication composition is acid-sensitive indication composition.Indicating liquid includes that pH value indicates Agent and solvent.Indication composition includes pH and volatile acid.Indication composition is by inhaling indicating liquid absorption In attached body, spray volatile acid after solvent seasoning and obtain.Indicating liquid is in terms of mass fraction, including 0.01 part～the pH value of 20 parts Indicator, 10 parts～the solvent of 100 parts.Absorption sprays 0.1 part～50 after the indicating liquid solvent evaporation drying in adsorbate Part volatile acid obtain indicant combination, indication composition includes 0.01 part～the pH of 20 parts and 0.1 part～50 The volatile acid of part.Certainly, in other embodiments, indication composition include 0.01 part～the pH of 20 parts, 10 parts ～the solvent of 100 parts and 0.1 part～the volatile acid of 50 parts, directly indication composition is adsorbed at adsorbate.

Wherein in an embodiment, indication composition also includes 0.05 part～the alkali of 30 parts.Alkali is selected from sodium hydroxide, hydrogen At least one in magnesium oxide, potassium hydroxide and Lithium hydrate.During preparation, alkali is mixed with other components with a small amount of water dissolution or By alkali dissolution the most in a solvent.

PH is to pH value sensitive, along with pH value change occurs color change.PH be selected between Cresol-purple (MCP), thymolphthalein, o-cresolphthalein, bromthymol blue (BTB), cresol red, cetyltrimethyl ammonium cation (CTA), at least one in dimethyl diaminophenazine chloride (NR), phenol red (PR), rhodamine (R6G) Sulforhodamine 101 and thymol blue.Should Understanding, other all can be as pH to the material of pH sensitive.

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 in acid, propanoic acid, butanoic acid and other higher carbon chain carboxylic acids.It is appreciated that other has volatile acid Matter also can be as volatile acid.

Solvent is used for dissolving pH.At least one in solvent selected from ethanol, methanol, isopropanol, acetone and water. It is appreciated that other solubilized pH and pH value all can be as solvents in neutral fluent material.

Alkali is for expanding the pH value excursion of instruction component, and after adding alkali in indicating liquid, its original ph is alkalescence, Spraying the volatile acid of excess after adsorption dry, volatile acid and highly basic reacts and generate strong base-weak acid salt, due to volatile acid and Alkali compares excess, and its pH value is acidity, and along with the volatilization of volatile acid, instruction component pH value gradually rises, when volatile acid is complete After full volatilization, instruction component is alkalescence because of strong base weak acid salt hydrolysis, and after i.e. adding alkali, the pH value excursion of instruction component can be from Acidity becomes alkalescence (not adding the instruction component pH value excursion of alkali for becoming neutral from acidity), makes the color of instruction component Change becomes apparent from.Alkali is at least one in the solubility highly basic such as sodium hydroxide, potassium hydroxide, magnesium hydroxide, Lithium hydrate.When So, it is added without alkali, uses alkaline adsorption body to may also function as identical effect.

Wherein in an embodiment, indication composition is alkali sensitivity indication composition.Indicating liquid includes that pH value indicates Agent and solvent.Indication composition includes pH and volatile base.Indication composition is by inhaling indicating liquid absorption In attached body, spray volatile base after solvent seasoning and obtain.Indicating liquid is in terms of mass fraction, including 0.01 part～the pH value of 20 parts Indicator and 10 parts～the solvent of 100 parts.Absorption sprays 0.1 part～50 after the indicating liquid solvent evaporation drying in adsorbate Part volatile base obtain indicant combination, indication composition includes 0.01 part～the pH of 20 parts and 0.1 part～50 The volatile base of part.Certainly, in other embodiments, indication composition include 0.01 part～the pH of 20 parts, 10 parts ～the solvent of 100 parts and 0.1 part～the volatile base of 50 parts, directly indication composition is adsorbed at adsorbate.

Wherein in an embodiment, indication composition also includes 0.05 part～the acid of 30 parts.Acid is selected from HCl, H₂SO₄And HNO₃In at least one.During preparation, acid adds with the form of hydrochloric acid, concentrated sulphuric acid or concentrated nitric acid, and number said before refers to It is effective ingredient (HCl, H in hydrochloric acid, concentrated sulphuric acid or concentrated nitric acid₂SO₄Or HNO₃) number, do not include the water wherein contained.

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

Volatile base has volatility, for changing the pH value of indication composition.Volatile base is selected from ammonia, hydroxide At least one in ammonium, propylamine, n-butylamine, n-hexylamine and 1-Aminooctane.Should be appreciated that other has volatile alkaline matter also Can be as volatile base.

Solvent is used for dissolving pH.At least one in solvent selected from ethanol, methanol, isopropanol, acetone and water. It is appreciated that other solubilized pH and pH value all can be as solvents in neutral fluent material.

Acid is for expanding the pH value excursion of instruction component, and after adding acid in indicating liquid, its original ph is acidity, Absorption indicating liquid sprays the volatile base of excess after drying, and volatile base and strong acid react generation strong acid weak base salt, owing to waving The property sent out alkali excess compared with acid, its pH value is alkalescence, and along with the volatilization of volatile base, instruction component pH value is gradually lowered, when waving After the property sent out alkali volatilizees completely, instruction component is acidity because of strong acid weak base salt hydrolysis, after i.e. adding acid, and the pH value change of instruction component Scope can become acid (not adding the instruction component pH value excursion of acid for becoming neutral from alkalescence) from alkalescence, makes instruction group The color change of part becomes apparent from.Certainly, it is added without acid, uses the adsorbate of acidity to serve the same role.

Please refer to Fig. 3 and Fig. 4, comparison layer 260 is formed at the surface of substrate layer 220.Comparison layer 260 includes observation window 262 and comparison portion 264.Observation window 262 is positioned at the middle part of comparison layer 260 so that observing the color of marker 230, in diagram In embodiment, observation window 262 is just to marker 230.In the illustrated embodiment, in the middle part of comparison layer 260, hollow out forms sight Examining window 262, certainly, in other embodiments, observation window 262 can be transparent material, it is not necessary to hollow out.Comparison portion 264 carries Color or other information for reference, the comparison as marker 230 identifies, and comparison portion 264 can be by printing on substrate layer 220 surface Scopiform becomes.Reference color can be the terminal colour of indication composition variable color, and certainly, reference color can also comprise 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 of marker 230 display is starting color, represent that carbon dioxide is quick The product of sense complexion changed instruction device 200 instruction is the freshest, when the color of marker 230 display is intermediate colors, represents and produces Product to use as early as possible, when the color of marker 230 display is terminal colour, represents that product is the most rotten.Certainly, as required, Reference color could be arranged to graduated colors.

Protective layer 270 is laminated in the surface of comparison layer 260 to protect comparison layer 260.Protective layer 270 can be formation protection or Protecting film layer.The material of protective layer 270 is selected from least in water-based gloss oil, the mute oil of aqueous, UV gloss oil PP thin film and PET film Kind.

Adhesive layer 280 is formed at the basal layer 210 side surface away from marker 230.Adhesive layer 280 is for referring to complexion changed Showing device 200 sticks to the material of the surface glue adhesion coating 280 of other article in acrylic resin, pressure sensitive adhesive and polyurethane At least one.

Peel ply 285 sticks to the surface of adhesive layer 280.Preferably, peel ply 285 for cellophane or is coated with silicone oil Paper, such that it is able to by peel ply 285 from the sur-face peeling of adhesive layer 280.

Starter 290, for opening the closing space that host body 240 is formed, makes extraneous gas enter host body 240.

In the illustrated embodiment, starter 290 includes passage 292 and for closing the sealing of passage 292 Part 294.Passage 292 is opened in host body 240, enters for extraneous gas for being opened by host body 240, concrete, ventilation Protective layer 270, comparison layer 260 and substrate layer 220 are run through in hole 292, such that it is able to make extraneous gas enter the interior of host body 240 Portion, carbon dioxide sensitivity complexion changed instruction device 200 is activated.Passage 292 aperture is 1mm～15mm.

Sealing member 294 is Obstruct membrane, and the material of sealing member 294 is selected from PET film, PP film, PVC film, aluminizer and comprises At least one in the composite of above-mentioned material.Sealing member 294 is affixed to protective layer 270 by bonding glue-line 296 and is closed Passage 292.In the illustrated embodiment, sealing member 294 one end extends and forms the convenient handgrip gripped.During use, catch Sealing member 294 is peeled off by handgrip, thus opens passage 292 and make extraneous gas enter the inside of host body 240.Bonding glue-line At least one in UV glue, pressure sensitive adhesive and acrylic resin of the material of 296.

Above-mentioned carbon dioxide sensitivity complexion changed instruction device 200, can adjust variable color easily by the size adjusting passage Cycle；During use, pull starter 290 gently, sealing member 294 is peeled off, open passage 292 so that extraneous gas Entered the inside of host body 240 by gap, carbon dioxide sensitivity complexion changed instruction device 200 is activated, outside carbon dioxide Gas enters the inside of host body 240, carbon dioxide contained in air and the indication composition being attached on adsorbate Reacting, in indication composition, the carbon dioxide absorbing material such as TBAH of alkalescence absorbs sour gas two After carbonoxide, its pH value reduces, and pH such as Bromothymol blue occurs color gradient, gradually from deeply along with pH value reduces Blueness becomes light blue, and eventually becomes yellow, the shelf-life one after color change cycle and the product of marker 230 open packaging During cause, people can be concluded that when observation window shows intuitively by the color that comparison reference color and observation window show Color close to starting color time, show that product is the freshest, can relieved use, the color shown when observation window connects with intermediate colors Time near, showing that product is placed a period of time, do not go bad, should use as early as possible, the color shown when observation window connects with terminal colour Time near, show that product is the most rotten, should not be continuing with.The marker of carbon dioxide sensitivity complexion changed instruction device is by absorption system Standby, technique is relatively easy.

Need it is further noted that the variable color of marker 230 can be adjusted by the concentration of regulation indicating liquid composition Cycle, certainly, by thickness and the aperture of adsorbate micropore of regulation marker 230, such that it is able to control absorption at adsorbate The total amount of interior indication composition.By adjusting the aperture of passage 292, thus control the speed within air entrance, thus 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, peel ply 385 and starter 390, its difference exists In, carbon dioxide sensitization time instruction device 300 does not include comparison layer, and other structures indicate the knot of device 100 with sensitive complexion changed Structure is identical.

Concrete, basal layer 310 is used for carrying marker 330.Basal layer 310 has good air-tightness, can stop Gas permeation basal layer 310.The material of basal layer 310 is polyethylene (PE), polypropylene (PP), polyethylene terephthalate Or surface recombination has the composite of above-mentioned material (PET).Composite can be the compound of common PET/aluminium foil/heat-sealing PET Material ("/" represents stacking, lower same), common PP/ aluminium foil/heat-sealing CPP composite, LDPE/ aluminium foil/PP composite, HDPE/ Aluminium foil/PET composite material.Wherein CPP represents un-stretched polypropylene.Wherein in an embodiment, by printing or being combined not The methods such as transparent material, are set to non-transparent material by basal layer 310.Certainly, it should be noted that the material of basal layer 310 Being not limited to above-mentioned material, other have good hot-melt bonding performance and bubble-tight material can serve as basal layer 310 Material.

Substrate layer 320 is for cooperatively forming the host body 340 for housing marker 330 with basal layer 310.Substrate layer 320 have good transparency, such that it is able to observed the face of the marker 330 being housed in host body 340 by substrate layer 320 Color.Substrate layer 320 plays air barrier effect and the effect with basal layer 110 hot melt adhesive, has good transparency, substrate layer The material of 320 is that polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET) or surface recombination have above-mentioned material The composite transparent material of material.It is multiple that composite transparent material can be the composite of common PET/heat-sealing PET, common PP/ seals CPP Condensation material, LDPE/PP composite, HDPE/PET composite.Certainly, it should be noted that the material of substrate layer 320 does not limits In above-mentioned material, other have a good performance transparent, hot sticky and bubble-tight material can serve as the material of substrate layer 320 Material.

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 marginal area of basal layer 310 and the marginal area of substrate layer 320 are sealed formation Bonding part 325, thus formed one there is good air-tightness, the receiving space of closing that gas can be stoped to pass through.In diagram Embodiment in, bonding part 325 be annular, there is certain width.Wherein in an embodiment, substrate layer 320 and base The contact surface material of bottom 310 is identical, thus during hot melt adhesive, identical material at high temperature can be merged in fact by intermolecular Existing gluing-free.Certainly, in other examples, the marginal area of basal layer 310 and the marginal area of substrate layer 320 are permissible 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 located at bonding part 325, and covers The subregion at basal layer 310 edge, for reducing the cohesive force of bonding part 325 subregion.In the illustrated embodiment, Dielectric layer 350 covers the part surface of the marginal area of substrate layer 320 or the marginal area of basal layer 310 and amasss.Dielectric layer 350 is Lamellar, dielectric layer 350 is at the width of the bonding part 325 at the position at size and dielectric layer 350 place of the width of bonding part 325 Spending identical, dielectric layer 350 autoadhesion portion 325 extends to bonding part 325 away from marker 330 near the side of marker 330 Side.At least one in common ink, UV gloss oil, organic silicone oil and anodized aluminium of the material of dielectric layer 350.At bonding part 325 arrange dielectric layer 340, such that it is able to reduce cohesive force at the position arranging dielectric layer 350, convenient by the substrate of this position Layer 310 separates the gap formed for extraneous gas entrance 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 includes that adsorbate and absorption are in absorption The indication composition of body.Adsorbate, as the carrier of carrying indication composition, has micropore character to adsorb indication composition. The pH value of adsorbate itself is neutrality, such that it is able to avoid impacting indication composition.The material of adsorbate is polytetrafluoro Ethylene microporous membrane, glass fibre porous film, microporous polypropylene membrane, pure pulp fibres, nylon fiber or cloth, certainly, need explanation , any pH value is neutrality, and can be can serve as the material of adsorbate by the material of capillarity absorption liquid.Absorption The thickness of body is 1 μm～1000 μm, and the average pore size of adsorbate micropore is 1nm～5000nm.

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

Protective layer 370 is laminated in substrate layer 320 surface with protection group sheet material layers 320.Protective layer 370 can be formation protection or guarantor Cuticular layer.The material of protective layer 370 is selected from least in water-based gloss oil, the mute oil of aqueous, UV gloss oil PET film and PP thin film Kind.

Adhesive layer 380 is formed at the basal layer 310 side surface away from marker 330.Adhesive layer 380 is for referring to complexion changed Showing device 300 sticks to the material of the surface glue adhesion coating 380 of other article in acrylic resin, pressure sensitive adhesive and polyurethane At least one.

Peel ply 385 sticks to the surface of adhesive layer 380.Preferably, peel ply 385 for cellophane or is coated with silicone oil Paper, such that it is able to by peel ply 385 from the sur-face peeling of adhesive layer 380.

Starter 390, for opening the closing space that host body 340 is formed, makes extraneous gas enter host body 340.? In embodiment illustrated, starter 390 is a convenient handgrip gripped.Starter 390 corresponds to substrate layer 320 The edge of the position of dielectric layer 350 connects.Thus, by pullling starter 390, to 320 1 effects upwards of substrate layer Power, reduces the cohesive force of the bonding part 325 at position, dielectric layer 350 place, is arranging dielectric layer due to the existence of dielectric layer 350 The position of 350 is opened easily, and a breathable gap occurs, so that extraneous gas enters host body by gap The inside of 340, carbon dioxide sensitization time instruction device 300 is activated.

In the illustrated embodiment, starter 390 is rectangular patch, for two-layer structure, ground floor and substrate layer 320 One-body molded, the second layer is one-body molded with protective layer 370, and starter 390 stretches out from the edge of substrate layer 320.

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

Above-mentioned carbon dioxide sensitization time instruction device 300, can adjust variable color easily by the size adjusting gap Cycle；During use, pull starter 390 gently, to 320 1 active forces upwards of substrate layer, due to depositing of dielectric layer 350 In the cohesive force of the bonding part 325 reducing position, dielectric layer 350 place, it is opened easily in the position arranging dielectric layer 350, A breathable gap occur, so that extraneous gas enters the inside of host body 340 by gap, carbon dioxide is sensitive Time-indicating arrangement 300 is activated, and outside gas enters the inside of host body 340, air and the finger being attached on adsorbate Show that compositions reacts, make the color of marker change, after color change cycle and the product of marker 330 open packaging Shelf-life consistent time, people can be concluded that by comparison that color show when marker is close to initiateing face intuitively During color, show that product is the freshest, can relieved use, when the color that marker shows and intermediate colors close to time, show that product is Place a period of time, do not go bad, should use as early as possible, when the color that marker show and terminal colour close to time, show that product is Rotten, should not be continuing with.The marker of carbon dioxide sensitization time instruction device is prepared by absorption, and technique is relatively easy.

Carbon dioxide sensitization time instruction device 300 can coordinate single colorimetric card to use, or the description at product Middle printing colorimetric card, colorimetric card provides 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, peel ply 485 and starter 490, its difference is, carbon dioxide Sensitization time instruction device 400 does not include comparison layer, and other structures are identical with the structure of sensitive complexion changed instruction device 200.

Basal layer 410 is used for carrying marker 430.Basal layer 410 has good air-tightness, can stop gas permeation Basal layer 410.The material of basal layer 410 be polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET) or Surface recombination has the composite of above-mentioned material.Composite can be the composite ("/" of common PET/aluminium foil/heat-sealing PET Represent stacking, lower with), common PP/ aluminium foil/heat-sealing CPP composite, LDPE/ aluminium foil/PP composite, HDPE/ aluminium foil/PET Composite.Wherein CPP represents un-stretched polypropylene.Wherein in an embodiment, by printing or compound opaque material Etc. method, basal layer 410 is set to non-transparent material.Certainly, it should be noted that on the material of basal layer 410 is not limited to Stating material, other have a good hot sticky performance and bubble-tight material can serve as the material of basal layer 410.

Substrate layer 420 is for cooperatively forming the host body 440 for housing marker 430 with basal layer 410.Substrate layer 420 have good transparency, such that it is able to observed the face of the marker 430 being housed 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.Composite transparent material can be the composite of common PET/heat-sealing PET, common PP/ Heat-sealing CPP composite, LDPE/PP composite, HDPE/PET composite.Certainly, it should be noted that substrate layer 420 Material be not limited to above-mentioned material, other have good performance transparent, hot sticky and bubble-tight material can serve as base The material of sheet material layers 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 marginal area of basal layer 410 and the marginal area of substrate layer 420 are sealed formation Bonding part 425, thus formed one there is good air-tightness, the receiving space of closing that gas can be stoped to pass through.Wherein In one embodiment, substrate layer 420 is identical with the contact surface material of basal layer 410, thus during hot melt adhesive, identical material exists Gluing-free can be realized by intermolecular fusion under high temperature.Certainly, in other examples, the marginal zone of basal layer 410 The marginal area of territory 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 includes that adsorbate and absorption are in absorption The indication composition of body.Adsorbate, as the carrier of carrying indication composition, has micropore character to adsorb indication composition. The pH value of adsorbate itself is neutrality, such that it is able to avoid adversely affecting indication composition.The material of adsorbate is poly- Tetrafluoroethene microporous membrane, glass fibre porous film, microporous polypropylene membrane, pure pulp fibres, nylon fiber or cloth, certainly, need Illustrating, any pH value is neutrality, and can be can serve as the material of adsorbate by the material of capillarity absorption liquid. The thickness of adsorbate is 1 μm～2000 μm, and the average pore size of adsorbate micropore is 1nm～5000nm.

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

Protective layer 470 is laminated in the surface of substrate layer 420 with protection group sheet material layers 420.Protective layer 470 can be formation protection or Protecting film layer.The material of protective layer 470 is selected from least in water-based gloss oil, the mute oil of aqueous, UV gloss oil PP thin film and PET film Kind.

Adhesive layer 480 is formed at the basal layer 410 side surface away from marker 430.Adhesive layer 480 is for referring to complexion changed Showing device 400 sticks to the material of the surface glue adhesion coating 480 of other article in acrylic resin, pressure sensitive adhesive and polyurethane At least one.

Peel ply 485 sticks to the surface of adhesive layer 480.Preferably, peel ply 485 for cellophane or is coated with silicone oil Paper, such that it is able to by peel ply 485 from the sur-face peeling of adhesive layer 480.

Starter 490, for opening the closing space that host body 440 is formed, makes extraneous gas enter host body 440.

In the illustrated embodiment, starter 490 includes passage 492 and for closing the sealing of passage 492 Part 494.Passage 492 is opened in host body 440, enters for extraneous gas for being opened by host body 440, concrete, ventilation Protective layer 470 and substrate layer 420 are run through in hole 492, such that it is able to make extraneous gas enter the inside of host body 440, carbon dioxide Sensitization time instruction device 400 is activated.Passage 492 aperture is 1mm～15mm.

Sealing member 494 is Obstruct membrane, and the material of sealing member 494 is selected from PET film, PP film, PVC film, aluminizer and comprises At least one in the composite of above-mentioned material.Sealing member 494 is affixed to protective layer 470 by bonding glue-line 496 and is closed Passage 492.At least one in UV glue, pressure sensitive adhesive and polyurethane of the material of bonding glue-line 496.Embodiment party in diagram In formula, sealing member 494 one end extends and forms the convenient handgrip gripped.During use, handgrip is caught to be peeled off by sealing member 494, thus Opening passage 492 makes extraneous gas enter the inside of host body 440.

Above-mentioned carbon dioxide sensitization time instruction device 400, can adjust change easily by adjusting the diameter of passage The color cycle；During use, pull starter 490 gently, sealing member 494 is peeled off, open passage 492 so that outside gas Body enters the inside of host body 440 by gap, and carbon dioxide sensitization time instruction device 400 is activated, and outside gas enters Entering the inside of host body 440, react with the indication composition being attached on adsorbate, the color of marker changes, When the color change cycle of marker 430 open with product the shelf-life after packaging consistent time, people can by comparison reference color and The color that observation window shows is concluded that intuitively when the color that observation window shows is close to starting color, shows product The freshest, can relieved use, when the color that observation window shows and intermediate colors close to time, show that product is placed a period of time, Do not go bad, should use as early as possible, when the color that observation window shows and terminal colour close to time, show that product is the most rotten, should not continue Use.The marker of carbon dioxide sensitization time instruction device is prepared by absorption, and technique is relatively easy.

Carbon dioxide sensitization time instruction device 400 can coordinate single colorimetric card to use, or the description at product Middle printing colorimetric card.

Hereinafter, it is illustrated in connection with specific embodiments.

Embodiment 1

The carbon dioxide sensitivity complexion changed instruction apparatus structure of embodiment 1 is as it is shown in figure 1, include basal layer 110, substrate layer 120, marker 130, dielectric layer 150, comparison layer 160, protective layer 170, adhesive layer 180, peel ply 185 and starter 190.

Wherein, the material of basal layer 110 is the composite of common PET/aluminium foil/heat-sealing PET, the material of substrate layer 120 For the composite of common PET/heat-sealing PET, during heat-sealing, the heat-sealing PET of basal layer contacts with the heat-sealing PET material of substrate layer, Hot melt adhesive at the temperature and pressure effect of heat-sealing version.Marker 130 includes adsorbate and the absorption instruction group at adsorbate Compound, the material of adsorbate is microporous teflon membran, and thickness is 10 μm, and the average pore size of adsorbate micropore is 30nm, refers to Show that compositions includes the Bromothymol blue of 0.01 part and the TBAH of 0.1 part.

The marginal area of basal layer 110 and the marginal area of substrate layer 120 are sealed and form bonding part 125, bonding Portion 125 is annular, and width is 10mm, and the material of dielectric layer 150 is UV gloss oil.

Comparison layer 160 includes navy blue, light blue and three kinds of colors of yellow, provides the initial face of indication composition respectively Color, intermediate colors and terminal colour.

The material of protective layer 170 is PET film, and the material of adhesive layer 180 is pressure sensitive adhesive, and the material of peel ply 185 is glass Glass paper.

During use, pull starter 190, to 120 1 active forces upwards of substrate layer, due to depositing of dielectric layer 150 In the cohesive force of the bonding part 125 reducing position, dielectric layer 150 place, it is opened easily in the position arranging dielectric layer 150, A breathable gap occur, at the minimum in gap, width is 5mm.Now, this instruction device is activated, and air can pass through seam Gap enters in the host body 140 being made up of underlayment 110 and substrate layer 120, the finger of absorption on marker 130 in host body 140 Show that the carbon dioxide absorbing material in component can react with sour gas carbon dioxide, along with the carrying out of reaction, instruction group The pH value of part is gradually lowered, and the pH sensitive dye colour comprised in instruction component gradually becomes light blue from navy blue, finally Becoming yellow, color change cycle is 4 days.Owing to the pH value of marker adsorbate is neutrality, the instruction component of its absorption is not with any Material contact (except sour gas) of pH value non-neutral, the factor only one of which of impact instruction component variable color, i.e. by absorbing Sour gas carbon dioxide generation variable color, therefore, the variable color clocking effect accuracy of instruction device significantly strengthens.

Traditional instruction device uses instruction ink printing marker, for meeting the printing adaptability requirement of ink, needs Adding substantial amounts of binding agent and a small amount of auxiliary agent in ink, affect ink variable color is by absorbing because have two: one Sour gas carbon dioxide generation variable color in air, two are, are affected generation variable color by non-neutral material in ink composition.Experiment Proving, binding agent and auxiliary agent pH value are non-neutral (mostly in faintly acid), and it causes both sides impact: on the one hand, owing to adding Having entered substantial amounts of binding agent, caused indicating component to be diluted, lighter, on the other hand, the initial ph value of instruction component is because of two Carbonoxide adsorbing material is alkalescence, and after adding binding agent and the auxiliary agent (mostly in faintly acid) of non-neutral, ink entirety pH value drops Low, the lighter of pH sensitive dyestuff, both sides factor causes ink colour saturation on the low side jointly, and after printing, ink is light blue Color, the color being i.e. in " fresh " state is light blue.After activation, transformation region ink indicate component absorb sour gas dioxy Changing carbon, cause color to change, due to binding agent, in cured printing ink, accounting is more than 70%, therefore, and its pH value (faintly acid) The terminal colour determining ink is light yellow, i.e. ink can only fade to light yellow from light blue, and color change interval is little.Through above-mentioned Relatively understanding, the instruction device using the present invention to provide can be greatly improved instruction accuracy and the color change interval of instruction device.

Embodiment 2

The carbon dioxide sensitivity complexion changed instruction apparatus structure of embodiment 2 is as it is shown in figure 1, include basal layer 110, substrate layer 120, marker 130, dielectric layer 150, comparison layer 160, protective layer 170, adhesive layer 180, peel ply 185 and starter 190.

Wherein, the material of basal layer 110 is common PP/ aluminium foil/heat-sealing CPP composite, and the material of substrate layer 120 is general Logical PP/ seals CPP composite, and during heat-sealing, the heat-sealing CPP of basal layer and the heat-sealing CPP material of substrate layer, in heat-sealing version Temperature and pressure effect under hot melt adhesive.Marker 130 includes adsorbate and the absorption indication composition at adsorbate, absorption The material of body is glass fibre porous film, and thickness is 2000 μm, and the average pore size of adsorbate micropore is 5000nm, indication composition Including the phenol red and sodium hydroxide of 80 parts of 10 parts.

The marginal area of basal layer 110 and the marginal area of substrate layer 120 are sealed and form bonding part 125, bonding Portion 125 is annular, and width is 10mm, and the material of dielectric layer 150 is organic silicone oil.

Comparison layer 160 includes peony, light red and three kinds of colors of yellow, provides the initial face of indication composition respectively Color, intermediate colors and terminal colour.

The material of protective layer 170 is PP thin film, and the material of adhesive layer 180 is polyurethane, and the material of peel ply 185 is coating There is the paper of silicone oil.

During use, pull starter 190, to 120 1 active forces upwards of substrate layer, due to depositing of dielectric layer 150 In the cohesive force of the bonding part 125 reducing position, dielectric layer 150 place, it is opened easily in the position arranging dielectric layer 150, A breathable gap occur, at the minimum in gap, width is 10mm.

The color change cycle of carbon dioxide sensitivity complexion changed instruction device is 180 days.

Embodiment 3

The carbon dioxide sensitivity complexion changed instruction apparatus structure of embodiment 3 is as it is shown in figure 1, include basal layer 110, substrate layer 120, marker 130, dielectric layer 150, comparison layer 160, protective layer 170, adhesive layer 180, peel ply 185 and starter 190.

Wherein, the material of basal layer 110 is LDPE/ aluminium foil/PP composite, and the material of substrate layer 120 is that LDPE/PP is multiple Condensation material, during heat-sealing, the LDPE of basal layer and the LDPE material of substrate layer, heat at the temperature and pressure effect of heat-sealing version Fusible conjunction.Marker 130 includes adsorbate and the absorption indication composition at adsorbate, and the material of adsorbate is that glass fibre is micro- Pore membrane, thickness is 1 μm, and the average pore size of adsorbate micropore is 1nm, and indication composition includes the m-cresol purple of 10 parts and 40 parts Sodium bicarbonate.

The marginal area of basal layer 110 and the marginal area of substrate layer 120 are sealed and form bonding part 125, bonding Portion 125 is annular, and the material of dielectric layer 150 is anodized aluminium.

Comparison layer 160 includes darkviolet, lilac and three kinds of colors of yellow, provides the initial face of indication composition respectively Color, intermediate colors and terminal colour.

The material of protective layer 170 is water-based gloss oil, and the material of adhesive layer 180 is acrylic resin, the material of peel ply 185 For cellophane.

During use, pull starter 190, to 120 1 active forces upwards of substrate layer, due to depositing of dielectric layer 150 In the cohesive force of the bonding part 125 reducing position, dielectric layer 150 place, it is opened easily in the position arranging dielectric layer 150, A breathable gap occur, at the minimum in gap, width is 3mm.

The color change cycle of carbon dioxide sensitivity complexion changed instruction device is 40 days.

Embodiment 4

The carbon dioxide sensitivity complexion changed instruction apparatus structure of embodiment 4 is as it is shown in figure 5, include basal layer 310, substrate layer 320, marker 330, dielectric layer 350, protective layer 370, adhesive layer 380, peel ply 385 and starter 390.

Wherein, the material of basal layer 310 is HDPE/ aluminium foil/PET composite material, and the material of substrate layer 320 is HDPE/PET Composite, during heat-sealing, the HDPE of basal layer contacts with the HDPE material of substrate layer, at the temperature and pressure effect of heat-sealing version Hot melt adhesive.Marker 330 includes adsorbate and the absorption indication composition at adsorbate, and the material of adsorbate is polytetrafluoroethyl-ne Alkene microporous membrane, thickness is 500 μm, and the average pore size of adsorbate micropore is 2000nm, and indication composition includes the dimethyl diaminophenazine chloride of 10 parts The TBAH of 101 and 50 parts.

The marginal area of basal layer 310 and the marginal area of substrate layer 320 are sealed and form bonding part 325, bonding Portion 325 is annular, and the material of dielectric layer 350 is common ink.

The material of protective layer 370 is PET film, and the material of adhesive layer 380 is pressure sensitive adhesive, and the material of peel ply 385 is glass Glass paper.

During use, pull starter 390, to 320 1 active forces upwards of substrate layer, due to depositing of dielectric layer 350 In the cohesive force of the bonding part 325 reducing position, dielectric layer 350 place, it is opened easily in the position arranging dielectric layer 350, A breathable gap occur, at the minimum in gap, width is 4mm.

Comparison card includes deep yellow, light yellow and red three kinds of colors, provide respectively indication composition starting color, Intermediate colors and terminal colour.

The color change cycle of carbon dioxide sensitivity complexion changed instruction device is 60 days.

Embodiment 5

The structure of the carbon dioxide sensitivity complexion changed instruction device of embodiment 5 is roughly the same with embodiment 1, and its difference is, At the minimum in gap, width is 8mm, and color change cycle is 2 days.

Embodiment 6

The structure of the carbon dioxide sensitivity complexion changed instruction device of embodiment 6 is roughly the same with embodiment 2, and its difference is, At the minimum in gap, width is 15mm, and color change cycle is 120 days.

Embodiment 7

The structure of the carbon dioxide sensitivity complexion changed instruction device of embodiment 7 is roughly the same with embodiment 3, and its difference is, At the minimum in gap, width is 5mm, and color change cycle is 16 days.

Embodiment 8

The structure of the carbon dioxide sensitivity complexion changed instruction device of embodiment 8 is roughly the same with embodiment 4, and its difference is, At the minimum in gap, width is 8mm, and color change cycle is 30 days.

Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, not to above-mentioned reality The all possible combination of each technical characteristic executed in example is all described, but, as long as the combination of these technical characteristics is not deposited In contradiction, all it is considered to be the scope that this specification is recorded.

Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed, but also Can not therefore be construed as limiting the scope of the patent.It should be pointed out that, come for those of ordinary skill in the art Saying, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement, these broadly fall into the protection of the present invention Scope.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.

Claims (10)

1. a carbon dioxide sensitivity complexion changed instruction device, it is characterised in that including:

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

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

Substrate layer, covers described marker surface, and described substrate layer is transparent material, described substrate layer and the limit of described basal layer Edge is tightly connected and forms the host body that can intercept gas, and described marker is contained in the closing space of described host body；

Starter, is connected with the edge of described substrate layer, and described starter can drive described substrate layer to away from described base The direction motion of bottom, makes described substrate layer be unfolded into the described closing space of supplied gas entrance with the edge of described basal layer Gap.

Carbon dioxide sensitivity complexion changed the most according to claim 1 instruction device, it is characterised in that described indication composition is also Including 10 parts～the solvent of 100 parts, at least one in described solvent selected from ethanol, methanol, isopropanol, acetone and water.

Carbon dioxide sensitivity complexion changed the most according to claim 1 instruction device, it is characterised in that the edge of described substrate layer Region is adhesively-bonded together to form bonding part with the marginal area of described basal layer.

Carbon dioxide sensitivity complexion changed the most according to claim 3 instruction device, it is characterised in that described carbon dioxide is sensitive Complexion changed instruction device also includes the dielectric layer of the cohesive force for reducing bonding part subregion, and described dielectric layer is located at described viscous Conjunction portion, described dielectric layer covers the part surface of the marginal area of described substrate layer or the marginal area of described basal layer and amasss, and Extend to the edge of the close described marker of described bonding part away from the edge of described marker from described bonding part, described startup Device is connected corresponding to the edge of the position of dielectric layer with described substrate layer.

Carbon dioxide sensitivity complexion changed the most according to claim 4 instruction device, it is characterised in that the material of described dielectric layer At least one in common ink, UV gloss oil, organic silicone oil and anodized aluminium.

Carbon dioxide sensitivity complexion changed the most according to claim 4 instruction device, it is characterised in that the described starter side of being Just the handgrip gripped, described starter is one-body molded with described substrate layer, is provided with the district of described dielectric layer from described substrate layer The edge in territory stretches out.

Carbon dioxide sensitivity complexion changed the most according to claim 6 instruction device, it is characterised in that described starter and institute The junction stating substrate layer is formed with impression.

Carbon dioxide sensitivity complexion changed the most according to claim 1 instruction device, it is characterised in that also include being formed at described The comparison layer on substrate layer surface, described comparison layer includes observation window and comparison portion, and described observation window corresponds to described marker, institute State comparison portion and reference color or other information are provided.

Carbon dioxide sensitivity complexion changed the most according to claim 8 instruction device, it is characterised in that also include being laminated in described The surface of comparison layer is for protecting the protective layer of described comparison layer.

Carbon dioxide sensitivity complexion changed the most according to claim 8 instruction device, it is characterised in that also include being laminated in institute State basal layer away from the adhesive layer of a side surface of described marker and the peel ply that adheres to described adhesive layer surface.