CN105911059A

CN105911059A - Acid-sensitive color change indicating device

Info

Publication number: CN105911059A
Application number: CN201610442423.8A
Authority: CN
Inventors: 刘永生; 郭欣; 刘文恒; 覃玲
Original assignee: Shenzhen Nine Stars Printing and Packaging Group Co Ltd
Current assignee: Shenzhen Nine Stars Printing and Packaging Group Co Ltd
Priority date: 2016-06-17
Filing date: 2016-06-17
Publication date: 2016-08-31
Anticipated expiration: 2036-06-17
Also published as: CN105911059B

Abstract

The invention relates to an acid-sensitive color change indicating device. The acid-sensitive color change indicating device comprises an indicating layer, a substrate layer, a base material layer and a starting device, wherein the indicating layer comprises an adsorption body and an indicating composition adsorbed to the adsorption body, the substrate layer is used for bearing the indicating layer, the indicating layer is stacked on the surface of the substrate layer, the base material layer covers the surface of the indicating layer, the base material layer is made of transparent materials, the base material layer and the edge of the substrate layer are in sealed connection to form a containing body capable of isolating gas, and the indicating layer is contained in the closed space of the containing body; the starting device is connected with the edge of the base material layer, and the starting device can drive the base material layer to move away from the substrate layer, so that the base material layer and the edge of the substrate layer are opened to form a gap for volatilizing volatile acid from the closed space. The acid-sensitive color change indicating device can conveniently adjust the color change period.

Description

Acid-sensitive complexion changed instruction device

Technical field

The present invention relates to a kind of acid-sensitive complexion changed instruction device.

Background technology

General product all has useful life or shelf-life, especially food, beverage and medicine etc. perishable Product store time be susceptible to putrid and deteriorated, in order to reduce oxygen in packaging, it is to avoid under oxygen atmosphere Rotten, generally use vacuum packaging or controlled atmospheric packing, and print in outer package the date of production and shelf-life with Judge the most expired for people.But, as fruit product packaging is opened or begins to use, how Effectively record is opened or the use time is particularly important.

Existing acid-sensitive 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, and protective layer is covered in Instruction unit surface is to protect instruction unit, along with product uses the increase of time, the volatilization in instruction unit Property acid can prolongation over time progressively volatilize, thus the color that pH indicator shows can produce change, according to The color of instruction unit may determine that use time or the opening time of product with reference section contrast.Protective layer covers On the surface of marker, marker being played a protective role, needing possess good breathability, so that waving The property sent out acid is volatilized by protective layer, simultaneously in order to avoid protective layer is on the impact with instruction unit variable color, generally selects With pH value in neutral material the material as protective layer.

But, protective layer covers on the surface of marker, plays a protective role marker, needs to possess good Good breathability, reacts so that volatile acid enters marker by protective layer, while in order to avoid Protective layer pair adversely affects with instruction unit variable color, generally selects pH value in neutral material as protective layer Material.But the gas transmission rate of protective layer can produce impact to the color change cycle of time-indicating arrangement, adjusts The gas transmission rate of protective layer is the most difficult.

Summary of the invention

Based on this, it is necessary to provide a kind of convenient acid-sensitive complexion changed instruction device adjusting color change cycle.

A kind of acid-sensitive complexion changed instruction device, including:

Marker, marker includes adsorbate and absorption indication composition in described adsorbate, described finger Show compositions in terms of mass fraction, including waving of 0.01 part～the pH of 20 parts and 0.1 part～50 parts Send out property acid, described pH selected from m-cresol purple, thymolphthalein, o-cresolphthalein, bromthymol blue, Cresol red, cetyltrimethyl ammonium cation, dimethyl diaminophenazine chloride, phenol red, rhodamine, Sulforhodamine 101 And at least one in thymol blue, described volatile acid is volatile carboxylic acid；

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 institute The edge seal connection stating basal layer forms the host body that can intercept gas, and described marker is contained in described The closing space of host body；

Starter, is connected with the edge of described substrate layer, described starter can drive described substrate layer to Moving in direction away from described basal layer, makes described substrate layer be unfolded into for institute with the edge of described basal layer State the gap that volatile acid volatilizees from described closing space.

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

Wherein in an embodiment, the marginal area of described substrate layer glues with the marginal area of described basal layer It is combined formation bonding part.

Wherein in an embodiment, described acid-sensitive 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 described dielectric layer described base of covering The part surface of the marginal area of sheet material layers or the marginal area of described basal layer amass, and from described bonding part away from The edge of described marker to the edge of the close described marker of described bonding part extend, described starter with Described substrate layer connects corresponding to the edge of the position of dielectric layer.

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

Wherein in an embodiment, described starter for convenience of grip handgrip, described starter with Described substrate layer 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 include the comparison layer being formed at described substrate layer surface, described comparison Layer includes observation window and comparison portion, and 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 described comparison The protective layer of layer.

Wherein in an embodiment, described indication composition also includes 0.05 part～the alkali of 30 parts, described alkali At least one in sodium hydroxide, magnesium hydroxide, potassium hydroxide and Lithium hydrate.

Above-mentioned acid-sensitive complexion changed instruction device, can adjust color change cycle easily by the size adjusting gap； Marker is by adsorbate internal adsorption indication composition, it is not necessary to adding binding agent etc., indicating effect is relatively For accurately；During use, pull starter gently, to one active force upwards of substrate layer, due to medium The existence of layer reduces the cohesive force of the bonding part at position, dielectric layer place, is arranging the position of dielectric layer by gently Easily open, a breathable gap occurs, so that volatile acid is by the inside from host body, the gap Volatilization, acid-sensitive complexion changed instruction device is activated, and volatile acid volatilizees from the inside of host body, in marker Acid-base value change, pH is along with the change generation color gradient of pH value, when marker Color change cycle open with product the shelf-life after packaging consistent time, people can pass through comparison reference color and observation The color that window shows is concluded that when the color that observation window shows is close to starting color intuitively, table Bright product is the freshest, can relieved use, when the color that observation window shows and intermediate colors close to time, show to produce Product are placed a period of time, do not go bad, and should use as early as possible, and 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 acid-sensitive complexion changed instruction device is by inhaling Attached preparation, technique is relatively easy.

Accompanying drawing explanation

Fig. 1 is the structural representation of the acid-sensitive complexion changed instruction device of an embodiment；

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

Fig. 3 is the structural representation of the acid-sensitive complexion changed instruction device of another embodiment；

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

Fig. 5 is the structural representation of the acid-sensitive complexion changed instruction device of another embodiment；

Fig. 6 is the structural representation of the acid-sensitive complexion changed instruction device of another embodiment.

Detailed description of the invention

Device is indicated to make further details of theory mainly in combination with specific embodiment and accompanying drawing acid labile complexion changed below Bright.

Referring to Fig. 1, the acid-sensitive complexion changed instruction device 100 of an embodiment includes basal layer 110, base material Layer 120, marker 130, dielectric layer 150, comparison layer 160, protective layer 170, adhesive layer 180, stripping Layer 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 is polyethylene (PE), polypropylene (PP), poly-right PET (PET) or surface recombination have the composite of above-mentioned material.Composite can be The composite ("/" represents stacking, lower same) of common PET/aluminium foil/heat-sealing PET, common PP/ aluminium foil/heat Envelope 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 compound opaque material etc. Method, is set to non-transparent material by basal layer 110.Certainly, it should be noted that basal layer 110 Material is not limited to above-mentioned material, and other have good hot-melt bonding performance and bubble-tight material can be made Material for 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 has good transparency, is housed in host body 140 such that it is able to observed by substrate layer 120 The color of interior marker 130.Substrate layer 120 plays printing comparison layer 160 carrying effect, air barrier is made With and with the effect of basal layer 110 hot melt adhesive, there is good transparency, the material of substrate layer 120 is On polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET) or surface recombination have State the composite transparent material of material.Composite transparent material can be common PET/heat-sealing PET composite, Common PP/ seals CPP composite, LDPE/PP composite, HDPE/PET composite.Certainly, It should be noted that the material of substrate layer 120 is not limited to above-mentioned material, other have the good transparency, Hot sticky performance and bubble-tight material can serve as the material of substrate layer 120.

Basal layer 110 and substrate layer 120 are stacked together, and marker 130 is positioned at basal layer 110 and base material Between layer 120, and cover the middle part of basal layer 110.The marginal area of basal layer 110 and substrate layer 120 Marginal area be sealed formation bonding part 125, thus form one and there is good air-tightness, can hinder The only receiving space of the closing that gas passes through.In the illustrated embodiment, bonding part 125 is annular, tool There is certain width.Wherein in an embodiment, substrate layer 120 and the contact surface material of basal layer 110 Identical, thus during hot melt adhesive, identical macromolecular material at high temperature can be realized by intermolecular fusion Gluing-free.Certainly, in other examples, the marginal area of basal layer 110 and substrate layer 120 Marginal area 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 cover the subregion at basal layer 110 edge, for reducing the bonding of bonding part 125 subregion Power.In the illustrated embodiment, dielectric layer 150 covers marginal area or the basal layer 110 of substrate layer 120 Marginal area part surface amass.Dielectric layer 150 is lamellar, and dielectric layer 150 is at the width of bonding part 125 The size in degree direction is identical with the width of the bonding part 125 at the position at dielectric layer 150 place, dielectric layer 150 Autoadhesion portion 125 extends to the bonding part 125 side away from marker 130 near the side of marker 130. 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, dielectric layer 140 is set, such that it is able to reduce cohesive force at the position arranging dielectric layer 150, Convenient separation with substrate layer 120 by the basal layer 110 of this position forms the seam volatilized away for volatile acid Gap.The width in gap is 1mm～50mm.

Marker 130 is contained in the receiving space of host body 140.Marker 130 includes adsorbate and suction It is attached to the indication composition of adsorbate.Adsorbate, as the carrier of carrying indication composition, has microporosity Matter is to adsorb indication composition.Wherein in an embodiment, the pH value of adsorbate itself is neutrality, thus Can avoid indication composition is impacted.The material of adsorbate is microporous teflon membran, glass fibers Dimension microporous membrane, microporous polypropylene membrane, pure pulp fibres, nylon fiber or cloth, certainly, it should be noted that Any pH value is neutrality, and can be can serve as the material of adsorbate by the material of capillarity absorption liquid Material.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 acid-sensitive indication composition.Indicating liquid bag Include pH and solvent.Indication composition includes pH and volatile acid.Indication composition By indicating liquid is adsorbed in adsorbate, spray volatile acid after solvent seasoning and obtain.Indicating liquid with Mass fraction meter, including 0.01 part～the pH of 20 parts, 10 parts～the solvent of 100 parts.Adsorb The volatile acid spraying 0.1 part～50 parts after indicating liquid solvent evaporation drying in adsorbate obtains indicant group Closing, indication composition includes 0.01 part～the pH of 20 parts and 0.1 part～the volatile acid of 50 parts. 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 hydrogen-oxygen Change at least one in sodium, magnesium hydroxide, potassium hydroxide and Lithium hydrate.During preparation, alkali is used a small amount of water Dissolve mix with other components or direct by alkali dissolution the most in a solvent.

PH is to pH value sensitive, along with pH value change occurs color change.PH value indicates Agent is selected from m-cresol purple (MCP), thymolphthalein, o-cresolphthalein, bromthymol blue (BTB), cresol Red, cetyltrimethyl ammonium cation (CTA), dimethyl diaminophenazine chloride (NR), phenol red (PR), rhodamine (R6G), At least one in Sulforhodamine 101 and thymol blue.Should be appreciated that other material to pH sensitive All can be as pH.

Volatile acid has volatility, for changing the pH value of indication composition.Volatile acid is carboxylic acid.Carboxylic At least one in acetic acid, propanoic acid, butanoic acid and other higher carbon chain carboxylic acids of acid.It is appreciated that it It has volatile acidic materials also can be as volatile acid.

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

Alkali is for expanding the pH value excursion of instruction component, after indicating liquid adds alkali, and its initial pH Value, in alkalescence, sprays the volatile acid of excess after adsorption dry, it is weak that volatile acid and highly basic react generation highly basic Hydrochlorate, due to volatile acid excess compared with alkali, its pH value is acidity, along with the volatilization of volatile acid, refers to Show that component pH value gradually rises, after volatile acid volatilizees completely, instruction component because of strong base weak acid salt hydrolysis in Alkalescence, after i.e. adding alkali, the pH value excursion of instruction component can become alkalescence from acidity and (not add alkali Instruction component pH value excursion is for becoming neutral from acidity), make the color change of instruction component become 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 carbon dioxide sensitivity indication composition, the most acid-sensitive Sense complexion changed instruction device is that carbon dioxide sensitivity complexion changed indicates device.Indication composition is by inhaling indicating liquid It is attached in adsorbate, obtains after drying.Indicating liquid include pH, carbon dioxide absorbing material and Solvent.Indication composition includes pH and carbon dioxide absorbing material.Wherein in an embodiment, Indicating liquid is in terms of mass fraction, including 0.01 part～the pH of 20 parts, 0.1 part～the two of 80 parts Carbonoxide adsorbing material and 10 parts～the solvent of 100 parts.Absorption indicating liquid solvent evaporation in adsorbate is dry Obtaining indicant combination after dry, indication composition includes 0.01 part～the pH of 20 parts and 0.1 part～80 The carbon dioxide absorbing material of part.Certainly, in other examples, indication composition and indicating liquid Forming identical, the carbon dioxide including 0.01 part～the pH of 20 parts, 0.1 part～80 parts is inhaled Enclosure material and 10 parts～the solvent of 100 parts, adsorb indicating liquid in adsorbate, it is not necessary to is dried.

PH is to pH value sensitive, and along with the change of indication composition pH value occurs, pH value refers to Show that the color of agent also changes.PH is selected from m-cresol purple (MCP), thymolphthalein, neighbour Cresolphthalein, bromthymol blue (BTB), cresol red, cetyltrimethyl ammonium cation (CTA), neutrality In red (NR), phenol red (PR), rhodamine (R6G), Sulforhodamine 101 and thymol blue at least A kind of.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 instruction combination The pH value of thing.Carbon dioxide absorbing material selected from quaternary ammonium salt, sodium hydroxide, Lithium hydrate, barium hydroxide, At least one in potassium hydroxide and sodium bicarbonate.Wherein in an embodiment, quaternary ammonium salt is selected from the tetrabutyl At least one in ammonium hydroxide, tetraethyl ammonium hydroxide, Tetramethylammonium hydroxide and TPAOH.

Solvent solubilized PH indicator and carbon dioxide absorbing material.Solvent selected from ethanol, methanol, isopropanol, At least one in acetone and water.It is appreciated that other solubilized pH and carbon dioxide adsorption material Material and pH value all can be as solvents in neutral fluent material.

Wherein in an embodiment, indication composition is oxygen sensitive indication composition, now acid-sensitive color Become instruction device and indicate device into oxygen sensitive complexion changed.Indication composition is by adsorbing indicating liquid absorption In body, obtain after drying.Indicating liquid includes oxygen sensitive dyestuff, reducing agent and solvent.Indication composition Including oxygen sensitive dyestuff and reducing agent.Indicating liquid is in terms of mass fraction, including 0.01 part～the oxygen of 20 parts Gas sensitive dye, 0.01 part～the reducing agent of 50 parts and 10 parts～the solvent of 100 parts.Absorption is in adsorbate Obtaining indicant combination after indicating liquid solvent evaporation drying, indication composition includes 0.01 part～the oxygen of 20 parts Gas sensitive dye and 0.01 part～the reducing agent of 50 parts.Certainly, in other examples, indication composition Identical with the composition of indicating liquid, including the oxygen sensitive dyestuff of 0.01 part～20 parts, 0.01 part～50 The reducing agent of part and 10 parts～the solvent of 100 parts, adsorb indicating liquid in adsorbate, it is not necessary to is dried.

Oxygen sensitive dyestuff has two kinds of forms of oxidized and reduced, the most corresponding two kinds of different colors, The oxygen sensitive dyestuff of oxidation state can be reduced agent reduction, is in reduction-state after reduction, and the oxygen of reduction-state is quick Infecting material can be with oxygen generation redox reaction, and course of reaction generation color changes.Oxygen sensitive dyestuff selects Select at least one in thiazine dye, oxazine dye, azine dye, indophenol dye and bipseudoindoxyl dye.The most normal Oxygen sensitive active dyestuff be methylene blue.Thiazine dye is selected from methylene blue, 3,7-Diaminophenothiazine. and toluidine blue In at least one.At least one in "diazoresorcinol", Safranine O and celestine blue of oxazine dye.Azine At least one in m-cresol purple and reddish black A of dyestuff.Indophenol dye is dichloroindophenol.Bipseudoindoxyl dye selects At least one in indigo and indigo-blue carmine.Should be appreciated that other oxidation-reduction indicator also can conduct The oxygen sensitive dyestuff of the present invention.

The oxygen sensitive dyestuff of the reducible oxidation state of reducing agent so that it is possess and oxygen generation redox reaction Ability.Reducing agent is selected from dithionite, the oxidation product of dithionite, sulphite, boron At least one in hydrogen sodium sulfite, sodium borohydride, glucose.Dithionite can be to connect two sulfurous Acid sodium.The oxidation product of dithionite is selected from such as at least one in sodium thiosulfate and bisulfites. At least one in sodium sulfite, Potassium acid sulfite and magnesium bisulfite of bisulfites.Sulfurous acid At least one in calcium sulfite, potassium sulfite and magnesium sulfite of salt.Should be appreciated that other is reducible The material of oxidation state oxygen sensitive dyestuff, it is possible to as the reducing agent of the present invention.

Solvent is used for dissolved oxygen sensitive dye and reducing agent.Solvent selected from ethanol, methanol, isopropanol, third At least one in ketone and water.It is appreciated that other solubilized oxygen sensitive dyestuff and reducing agent and pH value All can be as solvent in neutral fluent material.

Wherein in an embodiment, indication composition is alkali sensitivity indication composition, now acid-sensitive complexion changed Instruction device is that alkali sensitivity complexion changed indicates device.Indicating liquid includes pH and solvent.Instruction combination Thing includes pH and volatile base.Indication composition by by indicating liquid adsorb in adsorbate, Spray volatile base after solvent seasoning to obtain.Indicating liquid is in terms of mass fraction, including 0.01 part～20 parts PH and 10 parts～the solvent of 100 parts.Absorption indicating liquid solvent evaporation drying in adsorbate The volatile base that rear spraying is 0.1 part～50 parts obtains indicant combination, and indication composition includes 0.01 part～20 parts PH and 0.1 part～the volatile base of 50 parts.Certainly, in other embodiments, instruction combination Thing includes 0.01 part～the pH of 20 parts, 10 parts～the solvent of 100 parts and 0.1 part～the volatilization of 50 parts Property alkali, directly by indication composition adsorb at adsorbate.

Wherein in an embodiment, indication composition also includes 0.05 part～the acid of 30 parts.Acid 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, Number said before refers to 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 value indicates Agent is selected from m-cresol purple (MCP), thymolphthalein, o-cresolphthalein, bromthymol blue (BTB), cresol Red, cetyltrimethyl ammonium cation (CTA), dimethyl diaminophenazine chloride (NR), phenol red (PR), rhodamine (R6G), At least one in Sulforhodamine 101 and thymol blue.It is appreciated that other material to pH sensitive All can be as the pH of the present invention.

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

Acid is for expanding the pH value excursion of instruction component, after indicating liquid adds acid, and its initial pH Value is in acidity, and absorption indicating liquid sprays the volatile base of excess after drying, and volatile base and strong acid react raw Becoming strong acid weak base salt, due to volatile base excess compared with acid, its pH value is alkalescence, along with volatile base Volatilization, instruction component pH value is gradually lowered, and after volatile base volatilizees completely, instruction component is because of strong acid weak base Salt hydrolysis is acidity, and after i.e. adding acid, the pH value excursion of instruction component can become acidity (not from alkalescence Add the instruction component pH value excursion of acid for becoming neutral from alkalescence), make the color of instruction component change Become 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 Including observation window 162 and comparison portion 164.Observation window 162 is positioned at the middle part of comparison layer 160 so that observing and referring to Showing the color of layer 130, in the illustrated embodiment, observation window 162 is just to marker 130.In diagram In embodiment, hollow out formation observation window 162 in the middle part of comparison layer 160, certainly, in other embodiments, Observation window 162 can be transparent material, it is not necessary to hollow out.Comparison portion 164 provides reference color or other letters Breath, the comparison as marker 130 identifies, and comparison portion 164 can be by substrate layer 120 surface printing shape Become.Reference color can be the terminal colour of indication composition variable color, and certainly, reference color can also comprise finger Showing the starting color of compositions, in the illustrated embodiment, comparison portion 164 includes three kinds of reference colors, The starting color of indication composition, intermediate colors and terminal colour are provided respectively.When marker 130 display When color is starting color, represents that the product of acid-sensitive complexion changed instruction device 100 instruction is the freshest, work as finger Show when the color that layer 130 shows is intermediate colors, represent that product to use, as early as possible when marker 130 shows Color when being terminal colour, represent that product is the most rotten.Certainly, as required, reference color can be arranged For graduated colors.

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

Adhesive layer 180 is formed at the basal layer 110 side surface away from marker 130.Adhesive layer 180 is used In complexion changed indicates device 100 stick to the surface of other article, the material of adhesive layer 180 is selected from acrylic acid At least one in resin, pressure sensitive adhesive and polyurethane.

Peel ply 185 sticks to the surface of adhesive layer 180.Preferably, peel ply 185 is cellophane or painting It is furnished with the paper of silicone oil, 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 volatile acid from host body Volatilize away in 140 inside.In the illustrated embodiment, starter 190 is a convenient handgrip gripped. Starter 190 is connected corresponding to the edge of the position of dielectric layer 150 with substrate layer 120.Thus, pass through Pull starter 190, to 120 1 active forces upwards of substrate layer, owing to the existence of dielectric layer 150 is dropped The cohesive force of the bonding part 125 at low position, dielectric layer 150 place, is arranging the position quilt of dielectric layer 150 Open easily, a breathable gap occurs, so that volatile acid passes through gap from host body 140 Inside volatilize away, acid-sensitive complexion changed instruction device 100 be activated.

In the illustrated embodiment, starter 190 is rectangular patch, for three-decker, ground floor with Substrate layer 120 is one-body molded, and second time is one-body molded with comparison layer 160, third layer and protective layer 170 1 Body formed, starter 190 stretches out from the edge of substrate layer 120.

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

Above-mentioned acid-sensitive complexion changed instruction device 100, 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 add binding agent etc., instruction effect Fruit is the most accurate；During use, pull starter 190 gently, to 120 1 active forces upwards of substrate layer, The cohesive force of the bonding part 125 at position, dielectric layer 150 place is reduced due to the existence of dielectric layer 150, The position arranging dielectric layer 150 is opened easily, and a breathable gap occurs, so that volatility Acid is volatilized from the inside of host body 140 by gap, and acid-sensitive complexion changed instruction device 100 is activated, volatilization Property acid from the inside of host body 140 volatilize, the acid-base value in marker changes, pH with The change generation color gradient of pH value, the guarantor after color change cycle and the product of marker 130 open packaging When the matter phase is consistent, people can draw following knot intuitively by the color that comparison reference color and observation window show Opinion: when the color that observation window shows is close to starting color, show that product is 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 Continuous use.The marker of acid-sensitive complexion changed instruction device is prepared by absorption, and technique is relatively easy.

Need it is further noted that marker 130 can be adjusted by the concentration of regulation indicating liquid composition Color change cycle, certainly, by the regulation thickness of marker 130 and the aperture of adsorbate micropore, thus can To control the total amount of absorption indication composition in adsorbate.By adjusting the cross-sectional width in gap, permissible The size in the gap that regulation acid-sensitive complexion changed instruction device 100 is formed when starting, thus control volatile acid Evaporation rate, and then control color change cycle.

Referring to Fig. 3, the acid-sensitive complexion changed instruction device 200 of an embodiment includes basal layer 210, base material Layer 220, marker 230, comparison layer 260, protective layer 270, adhesive layer 280, peel ply 285 and startup Device 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 is polyethylene (PE), polypropylene (PP), poly-right PET (PET) or surface recombination have the composite of above-mentioned material.Composite can be The composite of common PET/aluminium foil/heat-sealing PET, common PP/ aluminium foil/heat-sealing CPP composite, LDPE/ Aluminium foil/PP composite, HDPE/ aluminium foil/PET composite material.Wherein in an embodiment, by printing Or the method such as compound opaque material, basal layer 210 is set to non-transparent material.Certainly, explanation is needed , the material of basal layer 210 is not limited to above-mentioned material, and other have good hot sticky performance and air-tightness 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 has good transparency, is housed in host body 140 such that it is able to observed by substrate layer 220 The color of interior marker 230.The material of substrate layer 220 is polyethylene (PE), polypropylene (PP), gathers Ethylene glycol terephthalate (PET) or surface recombination have 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 all Can be as the material of substrate layer 220.

Basal layer 210 and substrate layer 220 are stacked together, and marker 230 is positioned at basal layer 210 and base material Between layer 220, and cover the middle part of basal layer 210.The marginal area of basal layer 210 and substrate layer 220 Marginal area be sealed formation bonding part 225, thus form one and there is good air-tightness, can hinder The only receiving space of the closing that gas passes through.Wherein in an embodiment, substrate layer 220 and basal layer 210 Contact surface material identical, thus during hot melt adhesive, identical material at high temperature can be melted by intermolecular Conjunction realizes gluing-free.Certainly, in other examples, the marginal area of basal layer 210 and substrate layer The marginal area of 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 adsorbate and suction It is attached to the indication composition of adsorbate.Adsorbate, as the carrier of carrying indication composition, has microporosity Matter is to adsorb indication composition.The pH value of adsorbate itself is neutrality, such that it is able to avoid indication composition Adversely affect.The material of adsorbate is microporous teflon membran, glass fibre porous film, polypropylene Microporous membrane, pure pulp fibres, nylon fiber or cloth, certainly, it should be noted that any pH value is neutrality, And the material of adsorbate can be can serve as by the material of capillarity absorption liquid.

PH is to pH value sensitive, along with pH value change occurs color change.PH value indicates Agent is selected from m-cresol purple (MCP), thymolphthalein, o-cresolphthalein, bromthymol blue (BTB), cresol Red, cetyltrimethyl ammonium cation (CTA), dimethyl diaminophenazine chloride (NR), phenol red (PR), rhodamine (R6G) At least one in Sulforhodamine 101 and thymol blue.It is appreciated that other material to pH sensitive All can be as the pH of the present invention.

Please refer to Fig. 3 and Fig. 4, comparison layer 260 is formed at the surface of substrate layer 220.Comparison layer 260 Including observation window 262 and comparison portion 264.Observation window 262 is positioned at the middle part of comparison layer 260 so that observing and referring to Showing the color of layer 230, in the illustrated embodiment, observation window 262 is just to marker 230.In diagram In embodiment, hollow out formation observation window 262 in the middle part of comparison layer 260, certainly, in other embodiments, Observation window 262 can be transparent material, it is not necessary to hollow out.Comparison portion 264 provides reference color or other letters Breath, the comparison as marker 230 identifies, and comparison portion 264 can be by substrate layer 220 surface printing shape Become.Reference color can be the terminal colour of indication composition variable color, and certainly, reference color can also comprise finger Showing the starting color of compositions, in the illustrated embodiment, comparison portion 264 includes three kinds of reference colors, The starting color of indication composition, intermediate colors and terminal colour are provided respectively.When marker 230 display When color is starting color, represents that the product of acid-sensitive complexion changed instruction device 200 instruction is the freshest, work as finger Show when the color that layer 230 shows is intermediate colors, represent that product to use, as early as possible when marker 230 shows Color when being terminal colour, represent that product is the most rotten.Certainly, as required, reference color can be arranged For graduated colors.

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

Adhesive layer 280 is formed at the basal layer 210 side surface away from marker 230.Adhesive layer 280 is used Material in the surface glue adhesion coating 280 that complexion changed indicates device 200 stick to other article is selected from acrylic acid tree At least one in fat, pressure sensitive adhesive and polyurethane.

Peel ply 285 sticks to the surface of adhesive layer 280.Preferably, peel ply 285 is cellophane or painting It is furnished with the paper of silicone oil, 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 volatile acid from host body Volatilize away in 240 inside.

In the illustrated embodiment, starter 290 includes passage 292 and for closing passage 292 Sealing member 294.Passage 292 is opened in host body 240, makes volatility for being opened by host body 240 Acid volatilization is escaped, and concrete, passage 292 runs through protective layer 270, comparison layer 260 and substrate layer 220, Such that it is able to make the inside volatilization of volatile acid host body 240 escape, acid-sensitive complexion changed instruction device 200 quilt Activate.Passage 292 aperture is 1mm～15mm.

Sealing member 294 is Obstruct membrane, the material of sealing member 294 selected from PET film, PP film, PVC film, Aluminizer and at least one in comprising the composite of above-mentioned material.Sealing member 294 is by bonding glue-line 296 Affix to protective layer 270 and close passage 292.In the illustrated embodiment, sealing member 294 one end is prolonged Stretch and form the convenient handgrip gripped.During use, catch handgrip to be peeled off by sealing member 294, thus open ventilation Hole 292 makes volatile acid volatilize away from the inside of host body 240.The material of bonding glue-line 296 is selected from UV At least one in glue, pressure sensitive adhesive and acrylic resin.

Above-mentioned acid-sensitive complexion changed instruction device 200, can adjust variable color week easily by the size adjusting passage Phase；During use, pull starter 290 gently, sealing member 294 peeled off, open passage 292 thus Volatile acid is volatilized away from the inside of host body 240 by passage, acid-sensitive complexion changed instruction device 200 Being activated, volatile acid volatilizees away from the inside of host body 240, and the pH value of marker changes, pH PH indicator is along with the change generation color gradient of pH value, when the color change cycle of marker 230 is opened with product When shelf-life after packaging is consistent, the color that people can be shown by comparison reference color and observation window is intuitively It is concluded that when the color that observation window shows is close to starting color, shows 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 as early as possible, when the color that observation window shows and terminal colour close to time, show that product becomes Matter, should not be continuing with.The marker of acid-sensitive complexion changed instruction device is prepared by absorption, and technique is the simplest Single.

Need it is further noted that marker 230 can be adjusted by the concentration of regulation indicating liquid composition Color change cycle, certainly, by the regulation thickness of marker 230 and the aperture of adsorbate micropore, thus can To control the total amount of absorption indication composition in adsorbate.By adjusting the aperture of passage 292, from And control the speed of volatile acid volatilization, thus control color change cycle.

Referring to Fig. 5, the structure of the acid-sensitive complexion changed instruction device 300 of an embodiment refers to acid-sensitive complexion changed The structure of showing device 100 is roughly the same, and acid-sensitive complexion changed 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 startup dress Putting 390, its difference is, acid-sensitive complexion changed instruction device 300 does not include comparison layer, and other structures are with sensitive The structure of complexion changed instruction device 100 is identical.

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

Substrate layer 320 is for cooperatively forming the host body 340 for housing marker 330 with basal layer 310. Substrate layer 320 has good transparency, is housed in host body 340 such that it is able to observed by substrate layer 320 The color of interior marker 330.Substrate layer 320 play air barrier effect and with basal layer 110 hot melt adhesive Effect, there is good transparency, the material of substrate layer 320 be polyethylene (PE), polypropylene (PP), Polyethylene terephthalate (PET) or surface recombination have the composite transparent material of above-mentioned material.Compound saturating Bright 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 320 Material be not limited to above-mentioned material, other have good performance transparent, hot sticky and bubble-tight material all Can be as the material of substrate layer 320.

Basal layer 310 and substrate layer 320 are stacked together, and marker 330 is positioned at basal layer 310 and base material Between layer 320, and cover the middle part of basal layer 310.The marginal area of basal layer 310 and substrate layer 320 Marginal area be sealed formation bonding part 325, thus form one and there is good air-tightness, can hinder The only receiving space of the closing that gas passes through.In the illustrated embodiment, bonding part 325 is annular, tool There is certain width.Wherein in an embodiment, substrate layer 320 and the contact surface material of basal layer 310 Identical, thus during hot melt adhesive, identical material at high temperature can realize adhesion without adhesiver by intermolecular fusion Close.Certainly, in other examples, the marginal area of basal layer 310 and the marginal zone of substrate layer 320 Territory can be 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 cover the subregion at basal layer 310 edge, for reducing the bonding of bonding part 325 subregion Power.In the illustrated embodiment, dielectric layer 350 covers marginal area or the basal layer 310 of substrate layer 320 Marginal area part surface amass.Dielectric layer 350 is lamellar, and dielectric layer 350 is at the width of bonding part 325 The size in degree direction is identical with the width of the bonding part 325 at the position at dielectric layer 350 place, dielectric layer 350 Autoadhesion portion 325 extends to the bonding part 325 side away from marker 330 near the side of marker 330. 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, dielectric layer 340 is set, such that it is able to reduce cohesive force at the position arranging dielectric layer 350, Convenient separation with substrate layer 320 by the basal layer 310 of this position forms the seam volatilized away for volatile acid Gap.The width in gap is 1mm～50mm.

Marker 330 is carbon dioxide sensitivity marker, oxygen sensitive marker, acid-sensitive marker or alkali Sensitive marker.

Marker 330 is contained in the receiving space of host body 340.Marker 330 includes adsorbate and suction It is attached to the indication composition of adsorbate.Adsorbate, as the carrier of carrying indication composition, has microporosity Matter is to adsorb indication composition.The pH value of adsorbate itself is neutrality, such that it is able to avoid indication composition Impact.The material of adsorbate is microporous teflon membran, glass fibre porous film, polypropylene microporous Film, pure pulp fibres, nylon fiber or cloth, certainly, it should be noted that any pH value is neutrality, and The material of adsorbate can be can serve as by the material of capillarity absorption liquid.The thickness of adsorbate is 1 μm～1000 μm, the average pore size of adsorbate micropore is 1nm～5000nm.

Indication composition is that carbon dioxide sensitivity indication composition, oxygen sensitive indication composition, acid-sensitive refer to Show compositions 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 protection Oil reservoir or protecting film layer.The material of protective layer 370 is selected from water-based gloss oil, the mute oil of aqueous, UV gloss oil PET At least one in thin film and PP thin film.

Adhesive layer 380 is formed at the basal layer 310 side surface away from marker 330.Adhesive layer 380 is used Material in the surface glue adhesion coating 380 that complexion changed indicates device 300 stick to other article is selected from acrylic acid tree At least one in fat, pressure sensitive adhesive and polyurethane.

Peel ply 385 sticks to the surface of adhesive layer 380.Preferably, peel ply 385 is cellophane or painting It is furnished with the paper of silicone oil, 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 volatile acid from host body Volatilize away in 340.In the illustrated embodiment, starter 390 is a convenient handgrip gripped. Starter 390 is connected corresponding to the edge of the position of dielectric layer 350 with substrate layer 320.Thus, pass through Pull starter 390, to 320 1 active forces upwards of substrate layer, owing to the existence of dielectric layer 350 is dropped The cohesive force of the bonding part 325 at low position, dielectric layer 350 place, is arranging the position quilt of dielectric layer 350 Open easily, a breathable gap occurs, so that volatile acid passes through gap from host body 340 Inside volatilize away, acid-sensitive complexion changed instruction device 300 be activated.

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

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

Above-mentioned acid-sensitive complexion changed instruction device 300, can adjust variable color week easily by the size adjusting gap Phase；During use, pull starter 390 gently, to 320 1 active forces upwards of substrate layer, owing to being situated between The existence of matter layer 350 reduces the cohesive force of the bonding part 325 at position, dielectric layer 350 place, is arranging Jie The position of matter layer 350 is opened easily, and a breathable gap occurs, and volatile acid is received certainly by gap The inside volatilization of volume 340, acid-sensitive complexion changed instruction device 300 is activated, and volatile acid is from host body 340 Inside volatilization, the acid-base value in marker changes, pH along with pH value change occur Color gradient, when the color change cycle of marker 330 open with product the shelf-life after packaging consistent time, people Can be concluded that intuitively when the color that marker shows is close to starting color by comparison, show Product is the freshest, can relieved use, when the color that marker shows and intermediate colors close to time, show product Placing a period of time, do not go bad, should use as early as possible, the color shown when marker is close with terminal colour Time, show that product is the most rotten, should not be continuing with.The marker of acid-sensitive complexion changed instruction device is by absorption Preparation, technique is relatively easy.

Acid-sensitive complexion changed 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 acid-sensitive complexion changed instruction device 400 of an embodiment refers to acid-sensitive complexion changed The structure of showing device 200 is roughly the same, and acid-sensitive complexion changed instruction device 400 includes basal layer 410, substrate layer 420, marker 430, protective layer 470, adhesive layer 480, peel ply 485 and starter 490, it is not With being, acid-sensitive complexion changed instruction device 400 does not include comparison layer, other structures and sensitive complexion changed instruction dress Put 200 structure identical.

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 is polyethylene (PE), polypropylene (PP), poly-right PET (PET) or surface recombination have the composite of above-mentioned material.Composite can be The composite ("/" represents stacking, lower same) of common PET/aluminium foil/heat-sealing PET, common PP/ aluminium foil/heat Envelope 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 compound opaque material etc. Method, is set to non-transparent material by basal layer 410.Certainly, it should be noted that basal layer 410 Material is not limited to above-mentioned material, and other have good hot sticky performance and bubble-tight material can serve as base The material of bottom 410.

Substrate layer 420 is for cooperatively forming the host body 440 for housing marker 430 with basal layer 410. Substrate layer 420 has good transparency, is housed in host body 440 such that it is able to observed by substrate layer 420 The color of interior marker 430.The material of substrate layer 420 is polyethylene (PE), polypropylene (PP), gathers Ethylene glycol terephthalate (PET) or surface recombination have 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 all Can be as the material of substrate layer 420.

Basal layer 410 and substrate layer 420 are stacked together, and marker 430 is positioned at basal layer 410 and base material Between layer 420, and cover the middle part of basal layer 410.The marginal area of basal layer 410 and substrate layer 420 Marginal area be sealed formation bonding part 425, thus form one and there is good air-tightness, can hinder The only receiving space of the closing that gas passes through.Wherein in an embodiment, substrate layer 420 and basal layer 410 Contact surface material identical, thus during hot melt adhesive, identical material at high temperature can be melted by intermolecular Conjunction realizes gluing-free.Certainly, in other examples, the marginal area of basal layer 410 and substrate layer The marginal area of 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 alkali Sensitive marker.

Marker 430 is contained in the receiving space of host body 440.Marker 430 includes adsorbate and suction It is attached to the indication composition of adsorbate.Adsorbate, as the carrier of carrying indication composition, has microporosity Matter is to adsorb indication composition.The pH value of adsorbate itself is neutrality, such that it is able to avoid indication composition Adversely affect.The material of adsorbate is microporous teflon membran, glass fibre porous film, polypropylene Microporous membrane, pure pulp fibres, nylon fiber or cloth, certainly, it should be noted that any pH value is neutrality, And the material of adsorbate can be can serve as by the material of capillarity absorption liquid.The thickness of adsorbate is 1 μm～2000 μm, the average pore size of adsorbate micropore is 1nm～5000nm.

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

Adhesive layer 480 is formed at the basal layer 410 side surface away from marker 430.Adhesive layer 480 is used Material in the surface glue adhesion coating 480 that complexion changed indicates device 400 stick to other article is selected from acrylic acid tree At least one in fat, pressure sensitive adhesive and polyurethane.

Peel ply 485 sticks to the surface of adhesive layer 480.Preferably, peel ply 485 is cellophane or painting It is furnished with the paper of silicone oil, 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 volatile acid from host body Volatilize away in 440 inside.

In the illustrated embodiment, starter 490 includes passage 492 and for closing passage 492 Sealing member 494.Passage 492 is opened in host body 440, makes volatility for being opened by host body 440 Acid volatilization is escaped, and concrete, passage 492 runs through protective layer 470 and substrate layer 420, such that it is able to make to wave The inside volatilization of the property sent out acid host body 440 is escaped, and acid-sensitive complexion changed instruction device 400 is activated.Passage 492 apertures are 1mm～15mm.

Sealing member 494 is Obstruct membrane, the material of sealing member 494 selected from PET film, PP film, PVC film, Aluminizer and at least one in comprising the composite of above-mentioned material.Sealing member 494 is by bonding glue-line 496 Affix to protective layer 470 and close passage 492.The material of bonding glue-line 496 is selected from UV glue, pressure sensitive adhesive And at least one in polyurethane.In the illustrated embodiment, sealing member 494 one end extends formation conveniently The handgrip gripped.During use, catch handgrip to be peeled off by sealing member 494, thus open passage 492 and volatilize Property acid from the inside of host body 440 volatilization escape.

Above-mentioned acid-sensitive complexion changed instruction device 400, can adjust variable color easily by adjusting the diameter of passage Cycle；During use, pull starter 490 gently, sealing member 494 peeled off, open passage 492 from And make volatile acid pass through passage from the volatilization escape of the inside of host body 440, acid-sensitive complexion changed instruction dress Put 400 to be activated, volatile acid by passage from the inside of host body 440 volatilization escape, marker PH value changes, and the color of marker is along with changing, when color change cycle and the product of marker 430 Open the shelf-life after packaging consistent time, the color that people can be shown by comparison reference color and observation window is straight That sees is concluded that when the color that observation window shows is close to starting color, shows that product is the freshest, Can relieved use, when the color that observation window shows and intermediate colors close to time, show when product has placed one section Between, do not go bad, should use as early as possible, when the color that observation window shows and terminal colour close to time, show product The most rotten, should not be continuing with.The marker of acid-sensitive complexion changed instruction device is prepared by absorption, technique phase To simply.

Acid-sensitive complexion changed 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 acid-sensitive 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, substrate layer The material of 120 is the composite of common PET/heat-sealing PET, during heat-sealing, the heat-sealing PET of basal layer and base The heat-sealing PET material contact of sheet material layers, hot melt adhesive at the temperature and pressure effect of heat-sealing version.Marker 130 Including adsorbate and absorption at the indication composition of adsorbate, the material of adsorbate is microporous teflon membran, Thickness is 10 μm, and the average pore size of adsorbate micropore is 30nm, and indication composition includes the phenol of 0.01 part Red and the glacial acetic acid of 0.1 part.

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

Comparison layer 160 includes buff, light yellow and three kinds of colors of light red, provides indication composition respectively Starting 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, peel ply 185 Material be cellophane.

During use, pull starter 190, to 120 1 active forces upwards of substrate layer, due to dielectric layer The existence of 150 reduces the cohesive force of the bonding part 125 at position, dielectric layer 150 place, is arranging dielectric layer The position of 150 is opened easily, and a breathable gap occurs, and at the minimum in gap, width is 5mm. Now, this instruction device is activated, and volatile acid is made up of with substrate layer 120 underlayment 110 gap Host body 140 in volatilization escape, the pH value of indication composition changes, and comprises in indication composition PH sensitive dye colour gradually becomes light yellow from buff, eventually becomes light red, under 4 DEG C of environment, Color change cycle is 20 hours.Owing to the pH value of marker adsorbate is neutrality, the instruction component of its absorption is not Contacting (except volatile acid) with the material of any pH value non-neutral, the factor of impact instruction component variable color is only There is one, i.e. by absorbing the volatilization generation variable color of volatile acid, therefore, the variable color timing effect of instruction device Really accuracy significantly strengthens.

Traditional instruction device uses instruction ink printing marker, for meeting the printing adaptability requirement of ink, Need in ink, add substantial amounts of binding agent and a small amount of auxiliary agent, affect ink variable color because have two: One is the volatilization generation variable color by volatile acid, and two are, are affected generation by non-neutral material in ink composition Variable color.It is demonstrated experimentally that binding agent and auxiliary agent pH value are non-neutral (mostly in faintly acid), it causes two sides The impact in face: on the one hand, owing to adding substantial amounts of binding agent, causes indicating component to be diluted, and color becomes Shallow, on the other hand, the initial ph value of instruction component is acidity because of volatile acid, adds the binding agent of non-neutral And after auxiliary agent (mostly in faintly acid), ink entirety pH value reduces, the lighter of pH sensitive dyestuff, Both sides factor causes ink colour saturation on the low side jointly, and after printing, ink is light yellow, is i.e. in " fresh " The color of state is light yellow.After activation, transformation region ink indicates volatile acid volatilization in component, causes Color changes, and due to binding agent, in cured printing ink, accounting is more than 70%, therefore, and its pH value (weak acid Property) terminal colour that determines ink is weak yellow, i.e. ink can only fade to weak yellow, variable color from light yellow Scope is little.Understanding through above-mentioned comparison, the instruction device using the present invention to provide can be greatly improved instruction accurately Degree and the color change interval of instruction device.

Embodiment 2

The acid-sensitive 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 the composite of common PET/aluminium foil/heat-sealing PET, substrate layer The material of 120 is the composite of common PET/heat-sealing PET, during heat-sealing, the heat-sealing PET of basal layer and base The heat-sealing PET material contact of sheet material layers, hot melt adhesive at the temperature and pressure effect of heat-sealing version.Marker 130 Including adsorbate and absorption at the indication composition of adsorbate, the material of adsorbate is microporous teflon membran, Thickness is 10 μm, and the average pore size of adsorbate micropore is 30nm, and indication composition includes the phenol of 0.01 part Red, the sodium hydroxide of 0.05 part and the glacial acetic acid of 0.1 part.

Comparison layer 160 includes buff, orange and three kinds of colors of peony, provides indication composition respectively Starting color, intermediate colors and terminal colour.

During use, pull starter 190, to 120 1 active forces upwards of substrate layer, due to dielectric layer The existence of 150 reduces the cohesive force of the bonding part 125 at position, dielectric layer 150 place, is arranging dielectric layer The position of 150 is opened easily, and a breathable gap occurs, and at the minimum in gap, width is 5mm. Now, this instruction device is activated, and volatile acid is made up of with substrate layer 120 underlayment 110 gap Host body 140 in volatilization escape, the pH value of indication composition changes, and comprises in indication composition PH sensitive dye colour gradually becomes orange from buff, after volatile acid volatilizees completely, indicates component Because the hydrolysis of strong base-weak acid salt sodium acetate is alkalescence, therefore, instruction component eventually becomes peony.At 4 DEG C Under environment, color change cycle is 14 hours.Owing to the pH value of marker adsorbate is neutrality, the finger of its absorption Show that the component material not with any pH value non-neutral contacts (except volatile acid and alkali), impact instruction component The factor only one of which of variable color, i.e. by absorbing the volatilization generation variable color of volatile acid, therefore, indicates device Variable color clocking effect accuracy significantly strengthen.

Embodiment 3

The acid-sensitive 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 common PP/ aluminium foil/heat-sealing CPP composite, substrate layer 120 Material be that common PP/ seals CPP composite, during heat-sealing, the heat-sealing CPP of basal layer and substrate layer Heat-sealing CPP material, hot melt adhesive at the temperature and pressure effect of heat-sealing version.Marker 130 includes Adsorbate and absorption are at the indication composition of adsorbate, and the material of adsorbate is glass fibre porous film, thickness Being 2000 μm, the average pore size of adsorbate micropore is 5000nm, and indication composition includes first between 20 parts Phenol violet and the propanoic acid of 50 parts.

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

Comparison layer 160 includes buff, light yellow and weak three kinds of colors of yellow, provides indication composition respectively Starting 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, peel ply 185 Material is the paper being coated with silicone oil.

During use, pull starter 190, to 120 1 active forces upwards of substrate layer, due to dielectric layer The existence of 150 reduces the cohesive force of the bonding part 125 at position, dielectric layer 150 place, is arranging dielectric layer The position of 150 is opened easily, and a breathable gap occurs, and at the minimum in gap, width is 10mm. In the environment of 4 DEG C, the color change cycle of acid-sensitive complexion changed instruction device is 14 days.

Embodiment 4

The acid-sensitive complexion changed instruction apparatus structure of embodiment 4 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, substrate layer 120 Material be that common PP/ seals CPP composite, during heat-sealing, the heat-sealing CPP of basal layer and substrate layer Heat-sealing CPP material, hot melt adhesive at the temperature and pressure effect of heat-sealing version.Marker 130 includes Adsorbate and absorption are at the indication composition of adsorbate, and the material of adsorbate is glass fibre porous film, thickness Being 2000 μm, the average pore size of adsorbate micropore is 5000nm, and indication composition includes first between 20 parts Phenol violet, the potassium hydroxide of 10 parts and the propanoic acid of 50 parts.

Comparison layer 160 includes buff, orange and three kinds of colors of aubergine, provides indication composition respectively Starting color, intermediate colors and terminal colour.

During use, pull starter 190, to 120 1 active forces upwards of substrate layer, due to dielectric layer The existence of 150 reduces the cohesive force of the bonding part 125 at position, dielectric layer 150 place, is arranging dielectric layer The position of 150 is opened easily, and a breathable gap occurs, and at the minimum in gap, width is 10mm.

In the environment of 4 DEG C, the color change cycle of acid-sensitive complexion changed instruction device is 10 days.

Embodiment 5

The acid-sensitive complexion changed instruction apparatus structure of embodiment 5 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 LDPE/PP composite, during heat-sealing, the LDPE of basal layer and the LDPE material of substrate layer, Hot melt adhesive at the temperature of heat-sealing version and pressure effect.Marker 130 includes that adsorbate and absorption are at adsorbate Indication composition, the material of adsorbate is glass fibre porous film, and thickness is 1 μm, adsorbate micropore Average pore size is 1nm, and indication composition includes the cresol red of 10 parts, 10 parts of magnesium hydroxide and the fourth of 40 parts Acid.

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

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

During use, pull starter 190, to 120 1 active forces upwards of substrate layer, due to dielectric layer The existence of 150 reduces the cohesive force of the bonding part 125 at position, dielectric layer 150 place, is arranging dielectric layer The position of 150 is opened easily, and a breathable gap occurs, and at the minimum in gap, width is 3mm.

In the environment of 4 DEG C, the color change cycle of acid-sensitive complexion changed instruction device is 20 days.

Embodiment 6

The acid-sensitive complexion changed instruction apparatus structure of embodiment 6 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 startup dress Put 390.

Wherein, the material of basal layer 310 is HDPE/ aluminium foil/PET composite material, the material of substrate layer 320 For HDPE/PET composite, during heat-sealing, the HDPE of basal layer contacts with the HDPE material of substrate layer, Hot melt adhesive at the temperature and pressure effect of heat-sealing version.Marker 330 includes that adsorbate and absorption are in absorption The indication composition of body, the material of adsorbate is microporous teflon membran, and thickness is 500 μm, adsorbate The average pore size of micropore is 2000nm, and indication composition includes the thymol blue of 10 parts, 20 parts of sodium hydroxide And the Glacial acetic acid of 50 parts.

The marginal area of basal layer 310 and the marginal area of substrate layer 320 are sealed formation bonding part 325, bonding part 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, peel ply 385 Material be cellophane.

During use, pull starter 390, to 320 1 active forces upwards of substrate layer, due to dielectric layer The existence of 350 reduces the cohesive force of the bonding part 325 at position, dielectric layer 350 place, is arranging dielectric layer The position of 350 is opened easily, and a breathable gap occurs, and at the minimum in gap, width is 4mm.

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

In the environment of 4 DEG C, the color change cycle of acid-sensitive complexion changed instruction device is 18 days.

Embodiment 7

The structure of the acid-sensitive complexion changed instruction device of embodiment 7 is roughly the same with embodiment 1, and its difference is, At the minimum in gap, width is 8mm, and in the environment of 4 DEG C, color change cycle is 14 hours.

Embodiment 8

The structure of the acid-sensitive complexion changed instruction device of embodiment 8 is roughly the same with embodiment 2, and its difference is, At the minimum in gap, width is 8mm, and in the environment of 4 DEG C, color change cycle is 10 hours.

Embodiment 9

The structure of the acid-sensitive complexion changed instruction device of embodiment 9 is roughly the same with embodiment 3, and its difference is, At the minimum in gap, width is 15mm, and in the environment of 4 DEG C, color change cycle is 10 days.

Embodiment 10

The structure of the acid-sensitive complexion changed instruction device of embodiment 10 is roughly the same with embodiment 4, and its difference is, At the minimum in gap, width is 15mm, and in the environment of 4 DEG C, color change cycle is 8 days.

Embodiment 11

The structure of the acid-sensitive complexion changed instruction device of embodiment 11 is roughly the same with embodiment 5, and its difference is, At the minimum in gap, width is 5mm, and in the environment of 4 DEG C, color change cycle is 14 days.

Embodiment 12

The structure of the acid-sensitive complexion changed instruction device of embodiment 12 is roughly the same with embodiment 6, and its difference is, At the minimum in gap, width is 8mm, and in the environment of 4 DEG C, color change cycle is 10 days.

Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, the most right The all possible combination of each technical characteristic in above-described embodiment is all described, but, if these skills There is not contradiction in the combination of art feature, is all 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 can not therefore be construed as limiting the scope of the patent.It should be pointed out that, for this area For those of ordinary skill, without departing from the inventive concept of the premise, it is also possible to make some deformation and change Entering, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended power Profit requires to be as the criterion.

Claims

1. an acid-sensitive complexion changed instruction device, it is characterised in that including:

Acid-sensitive complexion changed the most according to claim 1 instruction device, it is characterised in that described instruction group Compound also includes 10 parts～the solvent of 100 parts, described solvent selected from ethanol, methanol, isopropanol, acetone and water In at least one.

Acid-sensitive complexion changed the most according to claim 1 instruction device, it is characterised in that described substrate layer The marginal area of marginal area and described basal layer be adhesively-bonded together to form bonding part.

Acid-sensitive complexion changed the most according to claim 3 instruction device, it is characterised in that described acid-sensitive Complexion changed instruction device also includes the dielectric layer of the cohesive force for reducing bonding part subregion, described dielectric layer Being located at described bonding part, described dielectric layer covers marginal area or the edge of described basal layer of described substrate layer The part surface in region amasss, and close to described bonding part away from the edge of described marker from described bonding part The edge of described marker extends, and described starter corresponds to the limit of the position of dielectric layer with described substrate layer Edge connects.

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

Acid-sensitive complexion changed the most according to claim 4 instruction device, it is characterised in that described startup fills Being set to the handgrip conveniently gripped, described starter is one-body molded with described substrate layer, sets from described substrate layer The edge in the region having stated dielectric layer stretches out.

Acid-sensitive complexion changed the most according to claim 6 instruction device, it is characterised in that described startup fills Put the junction with described substrate layer and be formed with impression.

Acid-sensitive complexion changed the most according to claim 1 instruction device, it is characterised in that also include being formed In the comparison layer on described substrate layer surface, described comparison layer includes observation window and comparison portion, described observation window pair Marker described in Ying Yu, described comparison portion provides reference color or other information.

Acid-sensitive complexion changed the most according to claim 8 instruction device, it is characterised in that also include stacking In the surface of described comparison layer for protecting the protective layer of described comparison layer.

Acid-sensitive complexion changed the most according to claim 1 instruction device, it is characterised in that described instruction Compositions also includes 0.05 part～the alkali of 30 parts, and described alkali is selected from sodium hydroxide, magnesium hydroxide, potassium hydroxide And at least one in Lithium hydrate.