CN110494523A - Cementability protective film, battery and its manufacturing method - Google Patents

Cementability protective film, battery and its manufacturing method Download PDF

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Publication number
CN110494523A
CN110494523A CN201880022741.6A CN201880022741A CN110494523A CN 110494523 A CN110494523 A CN 110494523A CN 201880022741 A CN201880022741 A CN 201880022741A CN 110494523 A CN110494523 A CN 110494523A
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China
Prior art keywords
cementability
protective film
wavelength
layer
polyolefin
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CN110494523B (en
Inventor
田中润
饭泉安广
平木健太
高萩敦子
山下力也
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Dai Nippon Printing Co Ltd
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Dai Nippon Printing Co Ltd
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    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/241—Polyolefin, e.g.rubber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/178—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for pouch or flexible bag cells
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    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
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    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
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    • C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
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    • C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C09J123/26—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers modified by chemical after-treatment
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    • C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C09J123/26—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers modified by chemical after-treatment
    • C09J123/30—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers modified by chemical after-treatment by oxidation
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    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
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    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/21—Paper; Textile fabrics
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    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/241—Polyolefin, e.g.rubber
    • C09J7/243—Ethylene or propylene polymers
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    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/38—Pressure-sensitive adhesives [PSA]
    • C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
    • H01M50/124—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material having a layered structure
    • H01M50/126—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material having a layered structure comprising three or more layers
    • H01M50/129—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material having a layered structure comprising three or more layers with two or more layers of only organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/183—Sealing members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • H01M50/188—Sealing members characterised by the disposition of the sealing members the sealing members being arranged between the lid and terminal
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    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/33—Applications of adhesives in processes or use of adhesives in the form of films or foils for batteries or fuel cells
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    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
    • C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
    • C09J2301/124—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present on both sides of the carrier, e.g. double-sided adhesive tape
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    • C09J2423/00—Presence of polyolefin
    • C09J2423/04—Presence of homo or copolymers of ethene
    • C09J2423/046—Presence of homo or copolymers of ethene in the substrate
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    • C09J2423/00—Presence of polyolefin
    • C09J2423/10—Presence of homo or copolymers of propene
    • C09J2423/106—Presence of homo or copolymers of propene in the substrate
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    • C09J2467/006—Presence of polyester in the substrate
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    • C09J2477/00—Presence of polyamide
    • C09J2477/006—Presence of polyamide in the substrate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

The present invention provides a kind of cementability protective film that can be configured with high precision in specified position.The average value T through percentage of the light of the every difference 1nm of wavelength in the range for the wavelength 400nm above wavelength 800nm or less of cementability protective film of the invention measured using spectrophotometer400‑800It is 25% or more 91% or less.

Description

Cementability protective film, battery and its manufacturing method
Technical field
The present invention relates to cementability protective film, battery and its manufacturing methods.
Background technique
Currently, exploitation has various types of batteries, in all cells, for the batteries such as encapsulated electrode or electrolyte member The packaging material of part is essential component.For example, utilizing metal packet in the metal can battery for wide range of areas Package material (metal can) encapsulates cell device.
In addition, in recent years along with electric car, mixed power electric car, PC, camera, portable phone Deng high performance, to the diversified shape of battery request, and require slimming and lightweight.Therefore, add as easy Work is at diversified shape and can be realized slimming and light-weighted packaging material, proposes substrate layer/adhesive layer/resistance Interlayer/heat sealability resin layer successively laminated body membranaceous made of lamination.
Using such membranaceous packaging material, in the heat sealability tree for the innermost layer for being located at packaging material In the state that rouge layer is relative to each other, the edge part thermal welding of packaging material is made by sealing, to encapsulate using packaging material Cell device.The cell device that the heat seal lands of metal terminal from packaging material are outstanding, are encapsulated by packaging material, by with electricity Pond element electrode electrical connection metal terminal and and external electrical connections.That is, being formed as metal in the heat seal lands of packaging material Terminal is prominent to the outside of packaging material in the state that being heating-fusion bonded property resin layer clips.
In the part that packaging material is heat-sealed, part locating for metal terminal, the thickness of heat sealability resin layer is because of warm High temperature and high pressure when envelope and it is thinning, metal terminal is electrically connected through heat sealability resin layer with barrier layer, it may occur that Short circuit.Therefore, in the part that packaging material is heat-sealed, part locating for metal terminal, usually in metal terminal and packing timber Expect to configure cementability protective film (metal terminal cementability protective film) between (heat sealability resin layer) (referring for example to patent text It offers 1).
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2014-132538 bulletin
Summary of the invention
Technical problems to be solved by the inivention
It is configured at cementability protective film between metal terminal and packaging material for example, as shown in figure 4, is utilizing cementability In the state that protective film clips metal terminal from two sides, packaging material is sealed, thus by being coated around metal terminal.But It is, it, will shown 2 bondings around metal terminal of such as Fig. 5 once the location dislocation when configuring 2 cementability protective films Property protective film be overlapped partial transposition in the state of be heat-sealed.In this case, the leakproofness for the part being heat-sealed becomes It is unstable, there is a problem of being easy to cause the short circuit of the barrier layer in metal terminal and packaging material.Therefore, metal terminal with The cementability protective film configured between packaging material must be configured with very high position precision.
But the present inventor carry out research know, cementability protective film, configuration 2 cementability protective films when, Or the slight misalignment of position when using around 1 cementability protective film winding metal terminal etc., using with camera Sensor or range estimation can not detect sometimes, there is the case where being directly heat-sealed in the state of not carrying out corrections to dislocation effect.
In such a case, the main purpose of the present invention is to provide a kind of bondings that can be configured with high position accuracy Property protective film, battery and its manufacturing method using the cementability protective film.
For solving the means of technical problem
In order to solve the above-mentioned technical problem, the present inventor has made intensive studies.As a result, it has been found that by using benefit The light of the every difference 1nm of wavelength penetrates percentage in the range of the wavelength 400nm above wavelength 800nm or less measured with spectrophotometer The average value T of rate400-800For 25% or more 91% cementability protective film below, cementability can be protected when manufacturing battery Film is accurately configured in specified position.
In addition, it was found by the inventors of the present invention that being in the cementability of 50 or more 89 ranges below by using haze value Protective film also can accurately configure cementability protective film in specified position when manufacturing battery.Also, hair of the invention Bright people has found a kind of cementability protective film, by using the cementability protective film, can also protect cementability when manufacturing battery Cuticula is accurately configured in specified position, which is the cementability protective film by coloring, for above-mentioned viscous Connecing property protective film, the every difference 1nm of wavelength in the range of the wavelength 400nm above wavelength 800nm or less measured using spectrophotometer Light the average value T through percentage400-800, measured using spectrophotometer with by 2 above-mentioned cementability protective films are Chong Die Wavelength 400nm above wavelength 800nm or less range in the every difference 1nm of wavelength light the average value T through percentage (II)400-800Absolute value of the difference be 13 or more.In addition, the inventors found that a kind of cementability protective film, by making With the cementability protective film, also cementability protective film can accurately be configured in specified position when manufacturing battery, this is viscous Connecing property protective film is the cementability protective film by coloring, and 2 above-mentioned cementability protective film overlappings are measured using spectrophotometric The average value T through percentage of the light of the every difference 1nm of wavelength in the range of the wavelength 400nm above wavelength 800nm or less obtained (II)400-800It is 5% or more 50% or less.Also, the inventors found that a kind of cementability protective film, by using this Cementability protective film also can accurately configure cementability protective film in specified position when manufacturing battery, to above-mentioned viscous Haze value that connecing property protective film measures, and the absolute value of the difference of haze value that measures Chong Die with by 2 above-mentioned cementability protective films It is 8.5 or more.
The present invention is that research is further repeated based on such opinion and completes.
That is, the present invention provides the invention of following manner.
A kind of 1. cementability protective films of item, wherein the T of above-mentioned cementability protective film400-800For 25% or more 91% hereinafter, Above-mentioned T400-800It is the every difference 1nm of wavelength in the range of the wavelength 400nm above wavelength 800nm or less measured using spectrophotometer Light the average value through percentage.
2. cementability protective films as described in item 1 of item, wherein the T of above-mentioned cementability protective film800-1200It is 30% or more, Above-mentioned T800-1200It is the every difference of wavelength in the range of the wavelength 800nm above wavelength 1200nm or less measured using spectrophotometer The average value through percentage of the light of 1nm.
3. cementability protective films as described in item 1 or 2 of item, wherein the T of above-mentioned cementability protective film300-400It is 89.00% Hereinafter, above-mentioned T300-400It is that wavelength is every in the range of the wavelength 300nm above wavelength 400nm or less measured using spectrophotometer The average value through percentage of the light of poor 1nm.
4. cementability protective films as described in any one of item 1, wherein above-mentioned cementability protective film it is above-mentioned T400-800Divided by T300-400Obtained value is in 0.90 or more 8.00 range below, above-mentioned T300-400It is to utilize spectrophotometer The average value through percentage of the light of the every difference 1nm of wavelength in the range of the wavelength 300nm above wavelength 400nm or less measured.
Cementability protective film of the item 5. as described in any one of item 1~4, wherein the wavelength measured using spectrophotometer The light of 500nm penetrates percentage T500Divided by the transmission percentage T of the light of the wavelength 700nm measured using spectrophotometer700 Value in 0.75 or more 0.99 range below.
Cementability protective film of the item 6. as described in any one of item 1~5, wherein the wavelength measured using spectrophotometer The light of 550nm penetrates percentage T550Divided by the transmission percentage T of the light of the wavelength 350nm measured using spectrophotometer350 Value in 1.00 or more 35.00 ranges below.
Cementability protective film of the item 7. as described in any one of item 1~6, wherein the haze value of above-mentioned cementability protective film In 50 or more 89 ranges below.
Cementability protective film of the item 8. as described in any one of item 1~7, wherein the T of above-mentioned cementability protective film (II)400-800With above-mentioned T400-800Absolute value of the difference be 13 or more, T (II)400-800It is by 2 above-mentioned cementability protective film weights The light of the every difference 1nm of wavelength is saturating in the folded and range of wavelength 400nm above wavelength 800nm or less that is measured using spectrophotometer Cross the average value of percentage.
Cementability protective film of the item 9. as described in any one of item 1~8, wherein be overlapped 2 above-mentioned cementability protective films And the light of the every difference 1nm of wavelength in the range of the wavelength 400nm above wavelength 800nm or less measured using spectrophotometer is saturating Cross the average value T (II) of percentage400-800It is 5% or more 50% or less.
Cementability protective film of the item 10. as described in any one of item 1~9, wherein by 2 above-mentioned cementability protective film weights The absolute value of the difference of the folded haze value (II) measured and above-mentioned haze value is 8.5 or more.
Cementability protective film of the item 11. as described in any one of item 1~10, wherein include at least substrate and be located at above-mentioned The first polyolefin layer formed by acid modified polyolefin or polyolefin on one side surface of substrate.
Cementability protective film of the item 12. as described in item 11, wherein including at least on another side surface of above-mentioned substrate The second polyolefin layer formed by acid modified polyolefin or polyolefin.
Cementability protective film of the item 13. as described in item 12, wherein above-mentioned first polyolefin layer and above-mentioned second polyolefin layer At least one party constituted by 2 layers or more.
Cementability protective film of the item 14. as described in any one of item 11~13, wherein above-mentioned substrate and above-mentioned first polyene Between hydrocarbon layers and either between above-mentioned substrate and above-mentioned second polyolefin layer or both sides have adhesion promoter oxidant layer.
Cementability protective film of the item 15. as described in any one of item 1~14, wherein above-mentioned cementability protective film is to be clipped in Cementability between the metal terminal being electrically connected with the electrode of cell device and the packaging material of the above-mentioned cell device of encapsulation is protected Film.
The 16. cementability protective film as described in item 15, wherein above-mentioned packaging material by least successively including substrate layer, The laminated body of barrier layer and heat sealability resin layer is constituted,
Above-mentioned cementability protective film is clipped between above-mentioned heat sealability resin layer and above-mentioned metal terminal.
A kind of 17. batteries of item comprising: at least there is the cell device of anode, cathode and electrolyte；Encapsulate battery member The packaging material of part；And it is electrically connected with above-mentioned anode and above-mentioned cathode and outstanding to the outside of above-mentioned packaging material Metal terminal,
Cementability protective film described in any one of item 1~16 is clipped between above-mentioned metal terminal and above-mentioned packaging material.
A kind of 18. manufacturing methods of battery of item, above-mentioned battery include: the battery at least with anode, cathode and electrolyte Element；Encapsulate the packaging material of the cell device；And it is electrically connected with above-mentioned anode and above-mentioned cathode and to above-mentioned packaging The outside of material metal terminal outstanding,
The manufacturing method of above-mentioned battery includes that cementability protective film described in any one of item 1~16 is made to be clipped in above-mentioned metal Process between terminal and above-mentioned packaging material.
A kind of 19. cementability protective films of item, haze value is in 50 or more 89 ranges below.
A kind of 20. cementability protective films of item, are the cementability protective films by coloring, wherein
The T of above-mentioned cementability protective film400-800With T (II)400-800Absolute value of the difference be 13 or more, above-mentioned T400-800It is Wavelength in the range of the wavelength 400nm above wavelength 800nm or less measured to above-mentioned cementability protective film using spectrophotometer The average value through percentage of the light of every difference 1nm, above-mentioned T (II)400-800It is by 2 above-mentioned cementability protective film overlappings and benefit The light of the every difference 1nm of wavelength penetrates percentage in the range of the wavelength 400nm above wavelength 800nm or less measured with spectrophotometer The average value of rate.
A kind of 21. cementability protective films of item, are the cementability protective films by coloring, wherein
The T (II) of above-mentioned cementability protective film400-800For 5% or more 50% hereinafter, above-mentioned T (II)400-800It is by 2 on pieces State the overlapping of cementability protective film and wave in the range of wavelength 400nm above wavelength 800nm or less that measures using spectrophotometer The average value through percentage of the light of long every difference 1nm.
A kind of 22. cementability protective films, wherein haze value that above-mentioned cementability protective film is measured, with it is above-mentioned by 2 The absolute value of the difference for the haze value (II) that the overlapping of cementability protective film measures is 8.5 or more.
Invention effect
According to the present invention, a kind of cementability protective film that can accurately configure in specified position is provided.
In addition, the use of the battery of membranaceous packaging material of the invention including: that at least there is anode, cathode and electrolyte Cell device；Encapsulate the packaging material of the cell device；And with anode and cathode be electrically connected and to packaging material outside Side metal terminal outstanding, cementability protective film of the invention are clipped between metal terminal and packaging material.Therefore, this is being used In the battery of the membranaceous packaging material of invention, cementability protective film is accurately configured around metal terminal.
Detailed description of the invention
Fig. 1 is the schematic top plan view using the battery of membranaceous packaging material of the invention.
Fig. 2 is the schematic cross-section of the line A-A ' of Fig. 1.
Fig. 3 is the schematic cross-section of the line B-B ' of Fig. 1.
Fig. 4 is in part that membranaceous packaging material is heat-sealed, the schematic cross-section of part locating for metal terminal.
Fig. 5 is in part that membranaceous packaging material is heat-sealed, the schematic cross-section of part locating for metal terminal.
Fig. 6 is the schematic cross-section of an example of cementability protective film of the invention.
Fig. 7 is the schematic cross-section of an example of cementability protective film of the invention.
Fig. 8 is the schematic cross-section of an example of cementability protective film of the invention.
Fig. 9 is the schematic cross-section of an example of cementability protective film of the invention.
Figure 10 is the schematic cross-section of an example of cementability protective film of the invention.
Figure 11 is the schematic cross-section of an example of cementability protective film of the invention.
Figure 12 is the schematic cross-section of an example of cementability protective film of the invention.
Figure 13 is the schematic cross-section of packaging material used in battery using membranaceous packaging material of the invention.
Specific embodiment
1. cementability protective film
First cementability protective film of the invention is characterized in that, the wavelength 400nm or more measured using spectrophotometer The average value T through percentage of the light of the every difference 1nm of wavelength in the range of wavelength 800nm or less400-800It is 25% or more 91% Below.
Second cementability protective film of the invention is characterized in that, range of the haze value 50~89.
Third cementability protective film of the invention is characterized in that, to pass through the cementability protective film coloured, to above-mentioned The every difference 1nm of wavelength in the range for the wavelength 400nm above wavelength 800nm or less that cementability protective film is measured using spectrophotometer Light the average value T through percentage400-800, with by 2 above-mentioned cementability protective films it is Chong Die and using spectrophotometric measure The average value T through percentage of the light of the every difference 1nm of wavelength in the range of the wavelength 400nm above wavelength 800nm or less obtained (II)400-800Absolute value of the difference be 13 or more.
4th cementability protective film of the invention is characterized in that, to pass through the cementability protective film coloured, by 2 on pieces State the overlapping of cementability protective film and wave in the range of wavelength 400nm above wavelength 800nm or less that measures using spectrophotometer The average value T (II) through percentage of the light of long every difference 1nm400-800It is 5% or more 50% or less.
5th cementability protective film of the invention is characterized in that, haze value that above-mentioned cementability protective film is measured, with The absolute value of the difference for the haze value (II) that 2 above-mentioned cementability protective film overlappings are measured is 8.5 or more.
Hereinafter, to the first cementability protective film to the 5th cementability protective film of the invention and using their this hair Bright battery is described in detail.Wherein, in the following description, as representative of the invention, to the first cementability protective film It is described in detail.It is common into the 5th cementability protective film about the first cementability protective film and the second cementability protective film Item is denoted as omitting about a other of the first cementability protective film to the 5th cementability protective film explanation of the invention Explanation.
In the present specification, numberical range shown in "~" mean " more than ", " following ".For example, the statement of 2~15mm is anticipated Refer to 2mm or more 15mm or less.
In addition, in the present specification, " TA-B" it be the wavelength that will be measured using spectrophotometer is that Anm or more Bnm will be below Each wavelength of the every difference 1nm of wavelength is added, again divided by number obtained from (B-A+1) through percentage in range.For example, T400-800Being will be using each wave of the every difference 1nm of wavelength in the range for the above 800nm or less of wavelength 400nm that spectrophotometer measures Long is added, again divided by number obtained from (800-400+1) through percentage.In addition, " TA" it is to be measured using spectrophotometer Wavelength be Anm penetrate percentage.For example, T400It is that the wavelength measured using spectrophotometer penetrates percentage for 400nm Rate.Wherein, " TA-B" statement mean to 1 cementability protective film measured value, " T (II)400-800" statement mean it is viscous by 2 Connecing property protective film is overlapped and the value that measures.About aftermentioned " T300-400”、“T800-1200”“T500”、“T700”、“T550”、“T350”、 “T800-1200" etc., although being not particularly illustrated, they are the values measured to 1 cementability protective film.
The optical characteristics of cementability protective film
In the first cementability protective film of the invention, T400-800It is 25~91%, from further increasing cementability The identity of protective film accurately configures from the perspective of specified position, preferred lower limit can enumerate about 40% or more, About 50% or more, about 60% or more, the preferred upper limit can enumerate about 88% or less, about 60% or less.In addition, as T400-800 Range, be preferably listed 25~88% or so, 25~60% or so, 40~91% or so, 40~88% or so, 40~60% a left side The right side, 50~91% or so, 50~88% or so, 50~60% or so, 60~91% or so, 60~88% or so.Pass through T400-800The case where having a value that, dislocation has occurred when configuring cementability protective film 1 is (for example, as shown in figure 5, in gold Belong to around terminal, the state that the part that 2 cementability protective films are overlapped is staggered) under, the sensor with camera can be utilized Or range estimation etc. suitably detects.In existing cementability protective film, transparency height, T400-800More than 91% or color it is deep, T400-800Lower than 25%, therefore, in the case where dislocation has occurred when configuring cementability protective film 1, it is difficult to accurately detect. Also, there is also the situations for the dislocation that natively will not accurately detect cementability protective film.
In the present invention, light under each wavelength of cementability protective film measures in accordance with the following methods through percentage Value.
The measurement > through percentage of < light
Using spectrophotometer, from the light of the side of cementability protective film irradiation provision wavelengths, measure light penetrates percentage Rate.Determination condition is as described below.
Data break: 1nm
Measurement range: 190nm~1500nm
Ultraviolet-visible bandwidth: 5.0nm
Near-infrared bandwidth: 20.0nm
Response: quick (Fast)
Scanning speed: 1000nm/min
Light source: deuterium discharge tube, halogen lamp
Light source switching: 340nm
Diffraction grating switching: 800nm
Firstly, using the measurement area for not placing sampleSpecimen holder, obtain baseline.Then, in the specimen holder On, it placesFor the cementability protective film of dimensions above as sample, measure light penetrates percentage.Provision wavelengths range Light be through percentage the light of wavelength interval 1nm within the scope of this average value through percentage.For example, wavelength 400nm Above wavelength 800nm light below is measurement in range below wavelength 400nm above wavelength 800nm through percentage The average value through percentage through the obtained light of percentage of the light of the every difference 1nm of wavelength.
Spectrophotometer uses ultraviolet-visible-near infrared spectrometer.Upper surface and following table from cementability protective film The arbitrary face measurement light in face penetrates percentage, as long as but above-mentioned and following light the numerical value through percentage from upper At least one party in surface and lower surface meets when measuring.
From the viewpoint of further increasing the identity of cementability protective film, accurately configure specified position, benefit The light of the every difference 1nm of wavelength penetrates percentage in the range of the wavelength 300nm above wavelength 400nm or less measured with spectrophotometer The average value T of rate300-400Preferably from about 89.00% or less.T300-400Lower limit be preferably listed about 5.05% or more, more preferable column It lifts 10.00% or more, further preferably enumerate about 20.00% or more, about 87.00% or less, more preferably column is preferably listed in the upper limit Lift about 70.00% or less.As T300-400Preferred range, can enumerate 5.05~89.00% or so, 5.05~ 87.00% or so, 5.05~70.00% or so, 10.00~89.00% or so, 10.00~87.00% or so, 10.00~ 70.00% or so, 20.00~89.00% or so, 20.00~87.00% or so, 20.00~70.00% or so.Pass through T300-400It has a value that, is protected using the light source detection cementability of the light mainly comprising wavelength 300nm to wavelength 400nm When the allocation position of film, can accurately it configure in specified position.
In addition, from further increasing the identity of cementability protective film of the invention, accurately configuring in specified position From the perspective of, 2 cementability protective films are overlapped to the above-mentioned T (II) measured400-800And above-mentioned T400-800Absolute value of the difference | T400-800- T (II)400-800| preferably 13 or more, further preferably 14 or more.As | T400-800- T (II)400-800| Preferred range, such as 13~30 or so, 13~25 or so, 14~30 or so, 14~25 or so can be enumerated.From suitably general Above-mentioned absolute value | T400-800- T (II)400-800| it is set in from the perspective of 13 or more, preferably cementability protective film is coloured.Make For colorant, the general colorant such as carbon black, titanium oxide can be enumerated, they can be used alone or using a variety of.As Toner, preferably carbon black, titanium oxide etc..The color of cementability protective film is preferably black, grey etc..Also, about above-mentioned T400-800, preferably 25~90%, further preferably 25~60% or so.In addition, as described above, third of the invention is bonded Property protective film is characterized in that, cementability protective film coloured, | T400-800- T (II)400-800| it is 13 or more.
As by above-mentioned absolute value | T400-800- T (II)400-800| the method for being set in 13 or more, such as can enumerate and make With colorant, the method etc. of at least one layer of coloring of the layer of cementability protective film 1 will be constituted.Also, can also enumerate substrate makes The method through percentage of light is adjusted with non-woven fabrics etc..Furthermore it is also possible to enumerate the low resin of selection transparency, constituting Method used in the layer of cementability protective film 1.Also, the method for adjusting the thickness of cementability protective film 1 can also be enumerated.
In addition, from further increasing the identity of cementability protective film of the invention, accurately configuring in specified position From the perspective of, about the T (II) for measuring 2 cementability protective films overlappings400-800, preferably 5~50% or so, more preferably It is 5~40% or so, further preferably 8~35% or so.From suitably by above-mentioned T (II)400-800It is set in 5~50% left sides From the perspective of the right side, preferably cementability protective film is coloured.As colorant, it is general that carbon black, titanium oxide etc. can be enumerated Toner, they can be used alone or using a variety of.As colorant, preferably carbon black, titanium oxide etc..The face of cementability protective film Color is preferably black, grey etc..Also, about above-mentioned T400-800, preferably 25~90%, further preferably 25~60% is left It is right.In addition, as described above, the 4th cementability protective film of the invention is characterized in that cementability protective film is coloured, above-mentioned T (II)400-800It is 5~50%.
As suitably by above-mentioned T (II)400-800The method for being set in 5~50% or so, can enumerate will with above-mentioned Absolute value | T400-800- T (II)400-800| it is set in 13 or more the identical method of method.
From the viewpoint of further increasing the identity of cementability protective film, accurately configure specified position, benefit The transmission hundred of the light of the every difference 1nm of wavelength in the range of the wavelength 800nm above wavelength 1200nm or less measured with spectrophotometer Divide the average value T of rate800-1200Preferably from about 30% or more, it is even more preferably about 35% or more, more preferably about 40% or more. Pass through T800-1200More than above-mentioned lower limit, the thermal diffusivity of cementability protective film is excellent, such as can also be by inside battery heat release When heat effectively to external cooling.In addition, as T800-1200The upper limit, preferably from about 92% or less.Pass through T800-1200For About 92% hereinafter, in the configuration bit for using the mainly light source detection cementability protective film of the light comprising wavelength 800nm to 1200nm When setting, can accurately it configure in specified position.As T800-1200Preferred range, be preferably listed 30~92% or so, 35~92% or so, 40~92% or so.
In addition, from further increasing, the identity of cementability protective film, accurately the viewpoint that configured in specified position goes out Hair, in cementability protective film of the invention, preferably T400-800Divided by T300-400Obtained value (T400-800/T300-400) 0.90 ~8.00 range.T400-800/T300-400Lower limit be preferably listed about 1.02 or more, more preferably enumerate about 1.32 or more, the upper limit is excellent Choosing enumerates about 7.50 or less, more preferably enumerates about 7.00 or less.In addition, as T400-800/T300-400Preferred range, can be with Enumerate 0.90~7.50 or so, 0.90~7.00 or so, 1.02~8.00 or so, 1.02~7.50 or so, 1.02~7.00 left sides The right side, 1.32~8.00 or so, 1.32~7.50 or so, 1.32~7.00 or so.Pass through T400-800/T300-400It has a value that, The identity of cementability protective film can be further increased.That is, being used sometimes when detecting the allocation position of cementability protective film The light source of multisystem.For example, in the light source using the light mainly comprising wavelength 400nm~800nm and mainly including wavelength Dual system light source as the light source of the light of 300nm~400nm passes through bonding when detecting the allocation position of cementability protective film The T of property protective film400-800/T300-400Above-mentioned range can for the optical characteristics for being difficult to detect using single system light source It detects difference brought by contrast, can be realized more reliable position detection.Also, by using these dual system light Source, surface for cementability protective film or it is internal there are foreign matter, there are the detections of fold, internal flaw etc. also can be effectively It carries out.
In addition, from the same viewpoint, in cementability protective film of the invention, the light of optimal wavelength 500nm it is saturating Cross percentage T500Divided by the transmission percentage T of the light of wavelength 700nm700Obtained from value (T500/T700) 0.75~0.99 Range.T500/T700Lower limit more preferably enumerate about 0.76 or more, the upper limit more preferably enumerates about 0.90 or less.In addition, as T500/ T700Preferred range, be preferably listed 0.75~0.90 or so, 0.76~0.99 or so, 0.76~0.90 or so.Pass through T500/ T700It is further increased in the identity of the range, cementability protective film.That is, for example, mainly including wavelength 500nm's using Dual system light source as the light source of the light source of light and the main light comprising wavelength 700nm, detects the configuration of cementability protective film When position, due to the T of cementability protective film500/T700In above range, for being difficult to the optics detected spy using single system light source Property, it is capable of detecting when difference brought by contrast, can be realized more reliable position detection.Also, it is double by using these System source, surface for cementability protective film or inside there are foreign matter, there are the detections of fold, internal flaw etc. also can It is effectively performed.
In addition, from the same viewpoint, in cementability protective film of the invention, the light of optimal wavelength 550nm it is saturating Cross percentage T550Divided by the transmission percentage T of the light of wavelength 350nm350Obtained from value (T550/T350) 1.00~35.00 Range.T550/T350Lower limit be preferably listed about 1.10 or more, more preferably enumerate about 2.70 or more, the upper limit is preferably listed about 30.00 Below, about 29.50 or less are more preferably enumerated.In addition, as T550/T350Preferred range, be preferably listed 1.00~30.00 a left side It is right, 1.00~29.50 or so, 1.10~35.00 or so, 1.10~30.00 or so, 1.10~29.50 or so, 2.70~ 35.00 or so, 2.70~30.00 or so, 2.70~29.50 or so.Pass through T550/T350It has a value that, cementability protection The identity of film further increases.That is, for example, in the light source using the light mainly comprising wavelength 550nm and mainly including wavelength Dual system light source as the light source of the light of 350nm, when detecting the allocation position of cementability protective film, due to cementability protective film T550/T350Contrast institute band is capable of detecting when for the optical characteristics for being difficult to detect using single system light source in above range The difference come, can be realized more reliable position detection.Also, by using these dual system light sources, cementability is protected The surface of film or inside there are foreign matter, there are the detections of fold, internal flaw etc. can also be effectively performed.
Also, from the same viewpoint, in cementability protective film of the invention, preferred model of the haze value 50~89 It encloses.The lower limit of haze value more preferably enumerates about 55 or more, further preferably enumerates about 60 or more, the upper limit more preferably enumerate about 88 with Under, further preferably enumerate about 85 or less.In addition, the preferred range as haze value, it can enumerate 50~88 or so, 50~ 85 or so, 55~89 or so, 55~88 or so, 55~85 or so, 60~89 or so, 60~88 or so, 60~85 or so.Pass through Haze value has a value that the identity of cementability protective film further increases.As described above, the second cementability of the invention Protective film is characterized in that haze value in 50 or more 89 ranges below.Wherein, these haze values are to 1 cementability protective film The value measured.
In addition, from the same viewpoint, above-mentioned haze value that 1 cementability protective film is measured, with by 2 cementabilities The haze value (II) that protective film overlapping measures (haze value that 2 cementability protective film overlappings measure is denoted as " haze value (II) ") Absolute value of the difference | haze value-haze value (II) |, lower limit is preferably from about 8.5 or more, even more preferably about 9 or more, it is further excellent About 15 or more are selected as, the upper limit is preferably from about 30 or less, even more preferably about 25 or less, more preferably about 23 or less.In addition, making For | haze value-haze value (II) | preferred range, 8.5~30 or so, 8.5~25 or so, 8.5~23 left sides can be enumerated The right side, 9~30 or so, 9~25 or so, 9~23 or so, 15~30 or so, 15~25 or so, 15~23 or so.As described above, this 5th cementability protective film of invention is characterized in that, haze value that 1 above-mentioned cementability protective film is measured, with by 2 on pieces State the absolute value of the difference for the haze value that the overlapping of cementability protective film measures | haze value-haze value (II) | it is 8.5 or more.
In addition, from the same viewpoint, as the lower limit of haze value (II), preferably 80 or more, more preferably 85 with On, as the upper limit, preferably 98 hereinafter, more preferably 95 hereinafter, preferred range as haze value (II), can enumerate 80 ~98 or so, 80~95 or so, 85~98 or so, 85~95 or so.
In the present invention, the haze value of cementability protective film is the value measured as follows.
The measurement > of < haze value
It is measured using haze meter.Wherein, mist is measured from the arbitrary face of the upper and lower surfaces of cementability protective film Angle value, as long as but the numerical value of above-mentioned haze value meet when being measured from at least one party in upper and lower surfaces It can.
It as the method for the optical characteristics for adjusting cementability protective film 1 of the invention, is not particularly limited, for example, can be with Enumerate the method etc. of at least one layer of coloring for the layer that cementability protective film 1 will be constituted using colorant.Also, it can also enumerate The method that substrate adjusts the characteristic of light using non-woven fabrics etc..Furthermore it is also possible to enumerate the low resin of selection transparency, constituting Method used in the layer of cementability protective film 1.Also, the method for adjusting the thickness of cementability protective film 1 can also be enumerated.
It as colorant, is not particularly limited, well known pigment, dyestuff etc. can be used.As the concrete example of colorant, Carbon black, titanium oxide etc. can be enumerated.
The layer of cementability protective film is constituted
If above-mentioned, of the invention cementability protective film includes that the first cementability protective film is complete to the 5th cementability protective film Portion.Layer as cementability protective film of the invention is constituted, and is not particularly limited.It is glued referring to Fig. 6~12 pair are of the invention The layer composition of connecing property protective film 1 is illustrated.
For example, as shown in fig. 6, cementability protective film 1 can be made of single layer.
Also, it cementability protective film 1 can also be made of as shown in Figure 7 this 2 layers of substrate 11 and the first polyolefin layer 12a, It can also cementability protective film 1 be as shown in Figure 8 the first polyolefin layer 12a and the second polyolefin layer 12b across 11 lamination of substrate 3 layers composition.Also, at least one party of the first polyolefin layer 12a and the second polyolefin layer 12b can be constituted by 2 layers or more.Figure 2 layers of composition and second that the first polyolefin layer 12a is the first polyolefin layer 12aa and the first polyolefin layer 12ab are indicated in 9 The case where polyolefin layer 12b is 2 layers of composition of the second polyolefin layer 12ba and the second polyolefin layer 12bb.Such as Fig. 7~Fig. 9 institute Show, by can be improved the conformality of cementability protective film 1 with substrate 11.Also, as shown in Figure 8 and Figure 9, by having Substrate 11, the first polyolefin layer 12a formed by acid modified polyolefin or polyolefin on a side surface of substrate 11 and The second the polyolefin layer 12b, Neng Gouti formed by acid modified polyolefin or polyolefin on another side surface of substrate 11 The cementability on the two sides of high adhesiveness protective film 1.
Also, as shown in Figure 10~Figure 12, from improve between substrate 11 and the first polyolefin layer 12a, and/or substrate 11 with From the perspective of cementability between second polyolefin layer 12b, there is adhesion promoter oxidant layer 13 preferably between these layers.Especially Such as be made of the film of polyester etc. in substrate 11, the first polyolefin layer 12a and the second polyolefin layer 12b by acid modified polyolefin or In the case that polyolefin etc. is constituted, in order to improve the adaptation between these layers, preferably there is adhesion promoter oxidant layer 13.
On the other hand, in substrate 11 such as in the case where constituting by non-woven fabrics, it can have adhesion promoter oxidant layer 13, but It is to make substrate 11 be impregnated with the first polyolefin layer 12a and the second polyolefin layer 12b to can be improved the adaptation of these layers, therefore, i.e., Make do not have adhesion promoter oxidant layer 13 shown in such as Fig. 7~Fig. 9, can also ensure that the high adaptation between these layers.In addition, It is made of in substrate 11 polyolefin and the first polyolefin layer 12a or the second polyolefin layer 12b is also modified poly- by polyolefin or acid In the case that alkene is constituted, it is possible to have adhesion promoter oxidant layer 13, but because by resin laminate of the same race, so even if not With adhesion promoter oxidant layer 13, the high adhesion between these layers can also ensure that.
As the thickness (overall thickness) of cementability protective film 1, be not particularly limited, be preferably listed 50~150 μm or so, more It is preferably listed 70~150 μm or so.
In the case where cementability protective film 1 of the invention is made of single layer as shown in Figure 6, cementability protective film 1 can be with It is formed by the polyolefin or acid modified polyolefin that are illustrated in the column aftermentioned [the first polyolefin layer 12a], with the first polyolefin layer 12a is it is also possible to cooperate aftermentioned engagement ingredient.Also, cementability protection can also be formed by curability acid modified polyolefin Film 1.
As curability acid modified polyolefin, the resin combination containing acid modified polyolefin and curing agent can be enumerated. As acid modified polyolefin, can enumerate and the same substance that illustrates in the column aftermentioned [the first polyolefin layer 12a].Example Such as, as shown in Figures 1 to 3, the part of the clamping of material 3 is packaged in metal terminal 2, using by containing acid modified polyolefin and solidification 2 cementability protective films 1 that the resin combination of agent is formed sandwich metal terminal 2, configuration in two surface sides of metal terminal 2, from The two sides of packaging material 3 are sealed, and thus encapsulate cell device 20, later, to 2 irradiation ionization of cementability protective film 1 Radiation, thus it enables that cementability protective film 1 solidifies.That is, in cementability protective film 1, when being configured at specified position, solidification Property acid modified polyolefin it is preferably thermoplastic and have ionizing radiation curable.
As curing agent, as long as sour modified polyolefin can be made by irradiation ionising radiations such as electron ray or gamma-rays etc. Hydrocarbon solidification, is not particularly limited, can enumerate the esters etc. of acrylic or methacrylic acid.Specifically have: ethylene glycol dipropyl Olefin(e) acid ester, diethylene glycol diacrylate, triethylene glycol diacrylate, trimethylolpropane trimethacrylate, ethylene glycol two The esters of the acrylic or methacrylic acid of methacrylate, trimethylol-propane trimethacrylate etc.；Divinyl The divinyl compound of benzene, divinyl pyridine etc.；The allyl alcohol and acrylic or methacrylic of diaryl fumarate etc. The esters of acid；Triallylcyanurate, Triallyl isocyanurate etc..Although additive amount is more, the degree of cross linking is higher, It is easy embrittlement, thus needs selected optimum value.The additive amount of curing agent can be 23 mass % or less.
As the commercially available product of curing agent, Triallyl isocyanurate (such as Japanization strain formula meeting can be used for example The TAIC (registered trademark) etc. of society's production), additive amount is preferably 0.5~10 mass %.In addition, the irradiation of ionising radiation is preferred It enumerates 50~200kGy or so, more preferably enumerate 70~130kGy or so.
By cooperating colorant in the cementability protective film 1 of single layer, cementability protective film 1 can be made to colour, adjusted saturating Luminosity.In addition, the resin that selection transparency is low, can adjust the light transmittance of cementability protective film 1.
In addition, cementability protective film 1 can be formed as substrate 11, the first polyolefin layer 12a, the second polyolefin layer 12b, glue Connect laminated body made of at least 2 layer laminates promoted in oxidant layer 13 etc..
[substrate 11]
In cementability protective film 1, substrate 11 is the layer to play a role as the supporter of cementability protective film 1.
About the raw material for forming substrate 11, it is not particularly limited.As the raw material of formation substrate 11, such as can enumerate poly- Alkene, polyamide, polyester, epoxy resin, acrylic resin, fluororesin, silicone resin, phenolic resin, polyetherimide, polyamides are sub- Amine, polycarbonate and their mixture or copolymer etc..
As polyolefin, can specifically enumerate: low density polyethylene (LDPE), medium density polyethylene, high density polyethylene (HDPE), line style are low The polyethylene such as density polyethylene；Homo-polypropylene, polyacrylic block copolymer (for example, block copolymer of propylene and ethylene), Crystallinity or non-crystalline polypropylene such as polyacrylic random copolymer (for example, random copolymer of propylene and ethylene)；Second Alkene-butene-propylene ter-polymers etc..In these polyolefin, be preferably listed polyethylene and polypropylene, more preferably enumerate it is poly- Propylene.
It as polyamide, can specifically enumerate: nylon 6, nylon66 fiber, nylon 610, nylon 12, nylon 46, nylon 6 and Buddhist nun The fatty family polyamide of the copolymer of dragon 66 etc.；Include the structural unit from terephthalic acid (TPA) and/or M-phthalic acid The hexa-methylene two of nylon 6I, nylon 6T, nylon 6IT, nylon 6I6T (I indicates that M-phthalic acid, T indicate terephthalic acid (TPA)) etc. Amine-M-phthalic acid-terephthalic acid (TPA) copolyamide, poly-meta-xylylene adipamide (MXD6) etc. gather comprising aromatic Amide；The alicyclic series polyamide of poly bis (4- aminocyclohexyl) methane adipamide etc.；And lactams ingredient or 4, Polyamide obtained from the isocyanate prepolymer composition copolymerization of 4 '-diphenyl methanes-diisocyanate etc., as copolyamide and poly- The polyester-amide copolymer or polyether ester amide copolymers of ester or the copolymer of polyalkylene ether glycols；Their copolymer etc.. These polyamide can be used alone, and two or more can also be applied in combination.
It as polyester, can specifically enumerate: polyethylene terephthalate, polybutylene terephthalate (PBT), poly- naphthalene Naphthalate polybutylene naphthalate, polyethylene glycol isophthalate, with ethylene glycol terephthalate is The copolyester of the main body of repetitive unit, using mutual-phenenyl two acid bromide two alcohol ester as copolyester of the main body of repetitive unit etc..Separately Outside, it as using ethylene glycol terephthalate as the copolyester of the main body of repetitive unit, can specifically enumerate: with terephthaldehyde Sour glycol ester is the main body of repetitive unit, the copolymer polyester that polymerize with ethylene isophthalate (referring to poly- Asia Ethyl (terephthalate/isophthalic acid ester) abbreviation), poly- ethylidene (terephthalate/isophthalic acid ester), poly- Asia Ethyl (terephthalate/adipate ester), poly- ethylidene (terephthalate/isophthalic acid ester sodium sulfonate), poly- sub- second Base (terephthalate/isophthalic acid ester sodium), poly- ethylidene (terephthalate/phenyl-dicarboxylic acid esters), poly- sub- second Base (terephthalate/decane dicarboxylic ester) etc..In addition, as using mutual-phenenyl two acid bromide two alcohol ester as the main body of repetitive unit Copolyester, can specifically enumerate: using mutual-phenenyl two acid bromide two alcohol ester as the main body of repetitive unit, with M-phthalic acid fourth two Copolymer polyester (abridging referring to polybutylene (terephthalate/isophthalic acid ester)), the polytetramethylene of alcohol polyisocyanate polyaddition Base (terephthalate/adipate ester), polybutylene (terephthalate/sebacate), polybutylene (terephthalic acid (TPA) Ester/decane dicarboxylic ester), polybutylene naphthalate etc..These polyester can be used alone, and can also be by 2 kinds Combination of the above uses.
Substrate 11 can be made of the resin film Jing Guo uniaxial or biaxial stretching, and can also be by non-stretched resin film It constitutes.Among these, the resin film, particularly the biaxial stretch-formed resin film of process by uniaxial or biaxial stretching are by taking To crystallization heat resistance is improved, thus is suitable as the use of substrate 11.
As the example for the resin film for forming substrate 11, polyester film, especially polyethylene naphthalate can be enumerated Film is preferred because of water vapor barrier property height and excellent heat resistance.Poly (ethylene naphthalate) film is by poly- naphthalenedicarboxylic acid ethylene glycol The film that ester (hereinafter sometimes referred to as " PEN ") is formed.
Pen film is compared with polyethylene terephthalate (PET) film, polyolefin film, acid modified polyolefin film etc., fusing point It is high with glass transition temperature, the mechanical strength under hot environment.Therefore, even if in cementability protective film 1 to be clipped in gold Belong in the case that the state between terminal 2 and packaging material 3 is heat-sealed, pen film is also not easy thinning, can effectively inhibit metal The short circuit of the barrier layer 33 of terminal 2 and packaging material 3.
Also, pen film steam permeability compared with PET film is small, water vapor barrier property is excellent, it is thus possible to effectively press down Vapor processed enters inside battery through pen film.Therefore, battery life can be made to realize projected life.
It is formed in addition, substrate 11 can use by the non-woven fabrics that above-mentioned resin is formed.The case where substrate 11 is non-woven fabrics Under, preferred substrates 11 are made of above-mentioned polyolefin, polyamide etc..
Also, as described above, substrate 11 can be also made containing colorant by cooperating colorant in substrate 11 Layer.Furthermore it is also possible to which the resin that selects transparency low adjusts light transmittance.In the case where substrate 11 is film, can also use Coloring film or the low film of transparency.In addition, can use in the case where substrate 11 is non-woven fabrics and use the fibre containing colorant The low non-woven fabrics of the non-woven fabrics or transparency of dimension or adhesive.
In the case where substrate 11 is made of resin film, it can according to need and the surface of substrate 11 is implemented at corona discharge Easy adhesion means well known to reason, ozone treatment, corona treatment etc..
It about the thickness of substrate 11, is not particularly limited, from the viewpoint of preventing short circuit, 5~100 μm of left sides is preferably listed The right side more preferably enumerates 8~80 μm or so.
[the first polyolefin layer 12a]
Cementability protective film 1 can have the first polyolefin layer 12a formed by acid modified polyolefin or polyolefin.First Polyolefin layer 12a is located on a side surface of substrate 11.
First polyolefin layer 12a includes polyolefin backbone.First polyolefin layer 12a includes that polyolefin backbone for example being capable of benefit It is analyzed with infra-red sepectrometry, gas chromatography mass spectrometry etc., analysis method is not particularly limited.For example, utilizing infrared light When spectrometry measures maleic anhydride modified polyolefin, in wave number 1760cm-1Neighbouring and wave number 1780cm-1Nearby it detected from horse Come the peak of acid anhydrides.It as polyolefin contained by the first polyolefin layer 12a, is not particularly limited, from being not only suitable for and resin component It is closely sealed, be also suitable for the inorganic component such as metal or ceramics it is closely sealed from the perspective of, acid modified polyolefin is preferably listed.
The compatibility of the heat sealability resin such as acid modified polyolefin and metal and polyolefin is high.Thus, for example that will be bonded Property protective film 1 be applied to the battery using membranaceous packaging material in the case where, by modified by acid in the configuration of 2 side of metal terminal The first polyolefin layer 12a that polyolefin is formed can be improved the adaptation at the interface of the first polyolefin layer 12a and metal terminal 2.
As the polyolefin for forming the first polyolefin layer 12a, can specifically enumerate: low density polyethylene (LDPE), the poly- second of middle density The polyethylene such as alkene, high density polyethylene (HDPE), linear low density polyethylene (LLDPE)；Homo-polypropylene, polyacrylic block copolymer are (for example, third The block copolymer of alkene and ethylene), the crystallinity such as polyacrylic random copolymer (for example, random copolymer of propylene and ethylene) Or non-crystalline polypropylene；The ter-polymers etc. of ethylene-butene-propylene.In these polyolefin, be preferably listed polyethylene and Polypropylene.
Polyolefin can be cyclic polyolefin.For example, carboxyl acid modified cyclic polyolefin refers to by that will constitute cyclic polyolefin A part of the monomer of hydrocarbon replaces with alpha, beta-unsaturated carboxylic acid or its acid anhydrides carries out copolymerization or by making α, β-unsaturation carboxylic Polymer obtained from acid or its acid anhydrides and cyclic polyolefin block polymerization or graft polymerization.Cyclic polyolefin is alkene and ring-type The copolymer of monomer as the alkene for the composition monomer for becoming above-mentioned cyclic polyolefin, such as can enumerate ethylene, propylene, 4- Methyl-1-pentene, butadiene, isoprene etc..In addition, the ring-type as the composition monomer for becoming above-mentioned cyclic polyolefin is single Body, such as the cyclic olefins such as norbornene can be enumerated；Cyclopentadiene, bicyclopentadiene, cyclohexadiene, drop can specifically be enumerated The cyclic diene etc. of borneol diene etc..In these polyolefin, cyclic olefin is preferably listed, further preferably enumerates norbornene.
In addition, as the acid modified polyolefin for forming the first polyolefin layer 12a, as long as being through the modified polyolefin of peracid Can, be not particularly limited, be preferably listed using unsaturated carboxylic acid or its it is anhydride grafting modified after polyolefin.
As the polyolefin modified by acid, may be exemplified and the polyolefin illustration as the first polyolefin layer 12a of formation The same substance of substance.
As the modified used carboxylic acid of acid or its acid anhydrides, such as maleic acid, acrylic acid, itaconic acid, crotons can be enumerated Acid, maleic anhydride, itaconic anhydride etc..
From the viewpoint of component inorganic for metal or ceramics etc. also can it is suitably closely sealed, in the first polyolefin layer In polyolefin contained by 12a, the improved polyalkenes such as particularly preferred maleic anhydride modified polypropylene.
First polyolefin layer 12a can be formed individually by a kind of resin component, can also be by resin component group of more than two kinds Alloyed polymer made of conjunction is formed.Also, the first polyolefin layer 12a can be formed only by 1 layer, also can use identical or not Same resin component is formed above by 2 layers.As described above, illustrating the first polyolefin layer 12a in Fig. 9 is the first polyolefin layer 12aa With the example of 2 layers of composition of the first polyolefin layer 12ab.
As the ratio of polyolefin contained by the first polyolefin layer 12a or acid modified polyolefin, it is not particularly limited, as Lower limit is preferably listed about 70 mass % or more, more preferably enumerates about 80 mass % or more, as the upper limit, about 100 matter are preferably listed Amount % or less, about 95 mass % or less are more preferably enumerated, further preferably enumerate about 90 mass % or less.In addition, as polyene 70~100 mass % or so, 70~95 mass % or so, 70~90 mass % or so, 80 are preferably listed in the range of the ratio of hydrocarbon ~100 mass % or so, 80~95 mass % or so, 80~90 mass % or so.By gathering contained by the first polyolefin layer 12a The ratio of alkene or acid modified polyolefin has a value that cementability protective film 1 of the invention can suitably play excellent Adaptation.
First polyolefin layer 12a is preferably also containing engagement ingredient.More specifically, the first polyolefin layer 12a is preferably by containing The polyolefin or acid modified polyolefin for having engagement ingredient are constituted.Contain engagement ingredient by the first polyolefin layer 12a, can make to glue First polyolefin layer of connecing property protective film 1 suitably with the pre-terminated such as metal terminal, is able to suppress the dislocation etc. when thermal welding.Its In, in the present invention, pre-terminated means to make its pre-glued, the state that can also remove after temporary pre-glued.
As engagement ingredient, as long as zygosity can be assigned to the first polyolefin layer 12a, it is not particularly limited, example It can such as enumerate: rosin, hydrogenated rosin, newtrex, rosin ester rosin or derivatives thereof；Australene, nopinene, lemon The terpenic series resins such as alkene；Terpene phenolic resin, coumarone-indene resin, phenylethylene resin series, diformazan benzene series resin, phenolic aldehyde system tree Rouge, Petropols, hydrogenated petroleum resin etc..In addition, terpene resin, rosin resin, Petropols and styrene through over hydrogenation The elastomer phase of based block copolymer is compatible, the visible very high effect in terms of improving with the closing force of the nonpolar component such as polyolefin Fruit, diformazan benzene series resin, phenolic aldehyde system resin, phenylethylene resin series etc. are mutually compatible with styrene, have the effect of improving cohesiveness. Accordingly it is also possible to by terpene resin, rosin resin, Petropols and diformazan benzene series resin, phenolic aldehyde system resin, benzene through over hydrogenation The combinations such as vinylite are as engagement ingredient.
In addition, amorphous polyolefin can also be used as engagement ingredient.As amorphous polyolefin, such as whether there is or not fixed The copolymer etc. of shape polypropylene or amorphous propene and other alpha-olefins can enumerate propylene-ethylene copolymerization as concrete example Object, -1 copolymer of propene-1-butene, propene-1-butene -1- ethylene-dien terpolymer, butene-hexene -1- octene-1 ternary are poly- It is total to close object, -1 terpolymer of butene-hexene -1-4- methylpentene, -1 ternary of butene-hexene -1-4- methylpentene Polymers, PB Polybutene-1 etc..In the amorphous poly as object, the number preferably more than low molecular weight compositions content is divided equally Son amount is 20000 or less and glass transition temperature is -20 DEG C of polyolefin below.
As engagement ingredient, preferably amorphous polyolefin.As the commercially available product of amorphous polyolefin, such as can enumerate REXtac2280 (REXtac.LLC production) etc..It is used in the first polyolefin layer 12a, such as engagement ingredient REXtac2280 and using in the case where acid modified polyolefin, as the content of REXtac2280, relative to sour modified polyolefin 100 mass parts of hydrocarbon, preferably from about 10 mass parts or so or about 20 mass parts or so.
Engagement ingredient can be used alone, two or more can also be applied in combination.
As the ratio for engaging ingredient contained by the first polyolefin layer 12a, it is not particularly limited, as lower limit, preferably arranges It lifts about 1 mass % or more, more preferably enumerate about 5 mass % or more, as the upper limit, about 30 mass % or less, more excellent are preferably listed About 25 mass % or less are enumerated in choosing.In addition, the range of the ratio as engagement ingredient, is preferably listed 1~30 mass % or so, 1 ~25 mass % or so, 5~30 mass % or so, 5~25 mass % or so.Pass through engagement contained by the first polyolefin layer 12a The ratio of ingredient has a value that, cementability protective film 1 of the invention can suitably play excellent zygosity and excellent Heat sealability, can more suitably with the thermal weldings such as metal terminal.It especially can suitably make cementability protective film 1 and gold Belong to the pre-terminated such as terminal, is able to suppress the dislocation etc. when thermal welding, makes the thermal weldings such as cementability protective film 1 and metal terminal.
In the case where the first polyolefin layer 12a is made up of multiple layers, can make at least 1 layer comprising cement, cement It can be only contained in 1 layer, also may include in multiple layers.
First polyolefin layer 12a can according to need containing the additive for playing the function as spacer (Spacer). Contain additive by the first polyolefin layer 12a, can further effectively inhibit the resistance of metal terminal 2 Yu packaging material 3 Short circuit between interlayer 33.As the partial size of additive, 0.1~35 μm or so can be enumerated, 5.0~30 μm of left sides are preferably listed Range that is right, more preferably enumerating 10~25 μm or so.In addition, the content as additive, relative to forming the first polyolefin layer 100 mass parts of resin component of 12a, 5~30 mass parts or so can be enumerated, more preferably enumerate 10~20 mass parts or so.
As additive, inorganic system, any additive of organic system are usable.As inorganic system's additive, such as can With enumerate charcoal (carbon, graphite), silica, aluminium oxide, barium titanate, iron oxide, silicon carbide, zirconium oxide, zirconium silicate, magnesia, Titanium oxide, calcium metaaluminate, calcium hydroxide, aluminium hydroxide, magnesium hydroxide, calcium carbonate etc..In addition, as organic system additive, example Fluororesin, phenolic resin, urea resin, epoxy resin, acrylic resin, benzoguanamine-formaldehyde condensation products, three can such as be enumerated Poly cyanamid-formaldehyde condensation products, polymethyl methacrylate cross-linking agent, polyethylene crosslinking substance etc..From the stability of shape, rigidity, From the perspective of content patience, preferably aluminium oxide, silica, fluororesin, acrylic resin, benzoguanamine-formaldehyde condensation Object, wherein particularly preferably spherical aluminium oxide, more preferable silica.As to formed the first polyolefin layer 12a resin at Point in additive package method, can use: advance with banbury mixers etc. by the two melting mixing, mother will be made again Material after material is set as the method for regulation mixing ratio；The method etc. directly mixed with resin component.
Also, colorant can also be cooperated in the first polyolefin layer 12a as described above, to make the first polyolefin layer 12a becomes the layer containing colorant.Light transmittance is adjusted alternatively, it is also possible to the resin that selects transparency low.
In the case where the first polyolefin layer 12a is made up of multiple layers, can will at least 1 layer coloring or reduce the transparency, can Only by 1 layer of coloring or the reduction transparency, multilayer can also be coloured or be reduced the transparency.
As the thickness of the first polyolefin layer 12a, appropriate selection can be constituted according to the layer of cementability protective film 1, is being answered In the case where battery for using membranaceous packaging material, it is contemplated that the landfill of the resin after heat-sealing, perforation are preferably listed respectively 10~100 μm or so, more preferably enumerate 12~90 μm or so.
[the second polyolefin layer 12b]
Cementability protective film 1 can have the second polyolefin layer 12b formed by acid modified polyolefin or polyolefin.Second Polyolefin layer 12b is located on the surface with the first polyolefin layer 12a opposite side of substrate 11.
It, can be with as the concrete example for forming the polyolefin of the second polyolefin layer 12b, acid modified polyolefin, engagement ingredient etc. The identical substance for illustrating and being illustrated in above-mentioned column [the first polyolefin layer 12a].In addition, the second polyolefin layer 12b by In the case that multilayer is constituted, it can make comprising cement at least 1 layer, cement can be only contained in 1 layer, also may include In multiple layers.
Second polyolefin layer 12b can be formed individually by a kind of resin component, can also be by by resin component of more than two kinds The alloyed polymer being composed is formed.Also, the second polyolefin layer 12b can be formed only by 1 layer, also can use it is identical or Different resin components forms 2 layers or more.As described above, indicating that the second polyolefin layer 12b is the second polyolefin in Fig. 9 and Figure 12 The example of 2 layers of composition of layer 12ba and the second polyolefin layer 12bb.
Also, the second polyolefin layer 12b can according to need containing additive.Contain addition in the second polyolefin layer 12b In the case where agent, content, type etc. are identical as above-mentioned [the first polyolefin layer 12a].
Furthermore it is also possible to cooperate colorant in the second polyolefin layer 12b as described above, to make the second polyolefin layer 12b becomes the layer containing colorant.Light transmittance is adjusted alternatively, it is also possible to the resin that selects transparency low.In the second polyolefin In the case that layer 12b is made up of multiple layers, at least 1 layer coloring or the transparency can will be reduced, can only by 1 layer of coloring or reduced saturating Multilayer can also be coloured or be reduced the transparency by bright property.
As the thickness of the second polyolefin layer 12b, appropriate selection can be constituted according to the layer of cementability protective film 1, is being answered In the case where battery for using membranaceous packaging material, it is contemplated that the landfill of the resin after heat-sealing, perforation are preferably listed respectively 10~100 μm or so, more preferably enumerate 12~90 μm or so.
[adhesion promoter oxidant layer 13]
Adhesion promoter oxidant layer 13 is to make between substrate 11 and the first polyolefin layer 12a, and/or substrate 11 and second poly- The layer for being bonded and being set as needed securely between olefin layer 12b.Adhesion promoters 13 can be provided only on substrate 11 and One and the second side between polyolefin layer 12a, 12b, it also can be set in two sides.
As described above, especially in cementability protective film of the invention, such as in substrate 11 by poly terephthalic acid second The film of diol ester (PET) or polyethylene naphthalate (PEN) etc. constitutes and the first polyolefin layer 12a and the second polyolefin In the case that layer 12b is made of acid modified polyolefin or polyolefin etc., in order to improve the adaptation of these interlayers, preferably have viscous It connects and promotes oxidant layer 13.
Isocyanates system, polyethyleneimine amine system, Polyester, polyurethane series, polybutadiene can be used in adhesion promoter oxidant layer 13 Adhesion promoters well known to alkene system etc. are formed.And it is also possible to use biliquid curing type bonding agent or single solution curing type bonding agent It is formed Deng well known bonding agent.From the viewpoint of further increasing electrolyte resistance, among these, preferably by isocyanates system Adhesion promoters formed.As the adhesion promoters of isocyanates system, by triisocyanate monomer, polymeric MDI The reduction of the adhesion promoters that isocyanate prepolymer composition is constituted, the lamination strength after lamination strength is excellent and electrolyte dipping is small. In particular, particularly preferably using by as 4,4 ', the 4 "-triisocyanate of triphenyl methane-or work of triisocyanate monomer For polymethylene polyphenyl base polyisocyanate (NCO containing ratio is about 30%, viscosity is 200~700mPas) structure of polymeric MDI At adhesion promoters formed.It is also preferable to using will be as three (to isocyanate phenyl) sulphur of triisocyanate monomer Substituted phosphate or polyethyleneimine amine system as host agent, using polycarbodiimide as the adhesion promoter of the biliquid curing type of crosslinking agent Dosage form at.
Adhesion promoter oxidant layer 13 can be by being carried out using rubbing method well known to stick coating method, rolling method, gravure coating process etc. It is coated and dried to form.As the coating weight of adhesion promoters, the adhesion promoters being made of triisocyanate the case where Under, it is 20~100mg/m2, preferably 40~60mg/m2；In the case where the adhesion promoters being made of polymeric MDI, be 40~ 150mg/m2, preferably 60~100mg/m2；Using polyethyleneimine amine system as host agent, using polycarbodiimide as crosslinking agent Biliquid curing type adhesion promoters in the case where, be 5~50mg/m2, preferably 10~30mg/m2.Using well known viscous In the case where agent is connect as adhesion promoters, the upper limit of coating weight is preferably from about 10g/m2Hereinafter, lower limit is preferably from about 1g/m2.Its In, triisocyanate monomer is the monomer in 1 molecule with 3 isocyanate group, and polymeric MDI is that MDI and MDI is polymerized The mixture of MDI oligomer is substance shown in following formula (1).
Cementability protective film 1 of the invention for example with layer shown in Fig. 8 constitute in the case where, can be by substrate 11 side surface stack the first polyolefin layer 12a and manufacture.In addition, for example in the case where being constituted with layer shown in Fig. 9, It can be manufactured and distinguishing lamination the first, second polyolefin layer 12a, 12b on the two sides of substrate 11.
The lamination of substrate 11 and first, second polyolefin layer 12a, 12b can be public by squeezing out laminating method, lamination methods etc. The method known carries out lamination.First polyolefin layer 12a and the second polyolefin layer 12b is also the same when being respectively 2 layers or more.In addition, In the case where substrate 11 and first, second polyolefin layer 12a, 12b are across adhesion promoter 13 lamination of oxidant layer, such as can be according to The adhesion promoters for constituting adhesion promoter oxidant layer 13 are coated on substrate 11 and are dried by above-mentioned method, from adhesion promoter The first, second polyolefin layer of lamination 12a, 12b are distinguished in oxidant layer 13.
Cementability protective film 1 of the invention can further lamination and substrate 11, the first polyolefin layer 12a, the second polyene The different other layers of hydrocarbon layers 12b, adhesion promoter oxidant layer 13.
Also, cementability protective film 1 of the invention can according to need containing lubricant, antioxidant, ultraviolet radiation absorption The others additive such as agent, light stabilizer.In addition, cementability protective film 1 is also sent out because of the type of additive, content etc. sometimes Change color.
Cementability protective film 1 of the invention, can will be as made from extrusion molding etc. in the case where being made of single layer Resin film is as cementability protective film 1.In addition, for substrate 11, the first polyolefin layer 12a, the second polyolefin layer 12b, In the case where the laminated body of adhesion promoter oxidant layer 13 etc., these layer laminates can be manufactured.As described above, as these layers Laminating method is not particularly limited, and lamination methods, interlayer laminating method, extrusion laminating method etc. can be used for example and carry out.
2. the purposes of cementability protective film
Cementability protective film 1 of the invention is for example clipped in and battery as in battery of the manufacture using membranaceous packaging material Material between the metal terminal 2 of the electrode electrical connection of element 20 and the packaging material 3 for encapsulating cell device 20 is useful.Tool For body, such as shown in Figures 1 to 3, cementability protective film 1 of the invention can be clipped in be electrically connected with the electrode of cell device 20 Metal terminal 2 and encapsulate cell device 20 packaging material 3 between.Cementability protective film 1 of the invention is due to T400-800If Be scheduled in the range of 25~91%, thus before for heat-sealing, using 2 cementability protective films 1 from the two of metal terminal 2 When the case where 1 cementability protective film 1 of the case where side sandwiches or utilization is wound around metal terminal 2, bonding Property the part that is overlapped of protective film 1 and the differentiation of the color of underlapped part be easy.That is, the part being overlapped Color is deeper than underlapped part.Therefore, the sensor with camera or range estimation easily detection cementability protection can be utilized Whether the position of film 1 misplaces.
In addition, as be described hereinafter, cementability protective film 1 of the invention is in addition to being clipped in metal terminal and encapsulating the packaging of cell device Other than purposes between material, additionally it is possible to extensive with using on the way.
Metal terminal 2 is prominent to the outside of packaging material 3, in the edge part 3a for the packaging material 3 being heat-sealed, across bonding Property protective film 1 be packaged material 3 clamping.Wherein, in the present invention, as heat when sealing packaging material, usually 160 ~190 DEG C or so of range, as pressure, the usually range of 1.0~2.0MPa or so.
As making cementability protective film 1 be clipped in the method between metal terminal 2 and packaging material 3, it is not particularly limited, example As shown in Figures 1 to 3, it is packaged the part of the clamping of material 3 in metal terminal 2, metal end can be sandwiched using cementability protective film 1 Son 2 and configure in two surface sides of metal terminal 2.
Hereinafter, the metal terminal 2 and packaging material 3 that use when for manufacturing the battery using membranaceous packaging material carry out It is described in detail.
[metal terminal 2]
Cementability protective film 1 of the invention can be clipped between metal terminal 2 and packaging material 3 and use.Metal terminal 2 (corbel back slab) is the component being electrically connected with the electrode of cell device 20 (positive or negative pole), is made of metal material.It is golden as constituting The metal material for belonging to terminal 2, be not particularly limited, such as aluminium, nickel, copper can be enumerated etc..For example, the anode with lithium ion battery The metal terminal 2 of connection is usually made of aluminium etc..In addition, the metal terminal being connect with the cathode of lithium ion battery usually by copper, Nickel etc. is constituted.
From the viewpoint of improving electrolyte resistance, chemical conversion processing is preferably implemented in the surface of metal terminal 2.Example Such as, in the case where metal terminal 2 is formed by aluminium, as chemical conversion processing concrete example, can enumerate to be formed phosphate, The well known method of the acid resistance overlay film of chromate, fluoride, mercapto-triazine compound etc..In the method for forming acid resistance overlay film Among, it is preferable to use the substance being made of phenolic resin, charomic fluoride (III) compound, phosphoric acid these three ingredients phosphoric acid chromic acid Salt treatment.
The size of metal terminal 2 can be suitably set according to the size etc. of used battery.Thickness as metal terminal 2 Degree, is preferably listed 50~1000 μm or so, more preferably enumerates 70~800 μm or so.In addition, the length as metal terminal 2, excellent Choosing enumerates 1~200mm or so, more preferably enumerates 3~150mm or so.In addition, the width as metal terminal 2, is preferably listed 1 ~200mm or so, 3~150mm or so is more preferably enumerated.
[packaging material 3]
As packaging material 3, the material with laminated construction can be enumerated, the laminated construction is by least successively having substrate The laminated body of layer 31, barrier layer 33 and heat sealability resin layer 34 is formed.Cross section structure in Figure 13, as packaging material 3 An example, indicate substrate layer 31, adhesive layer 32, barrier layer 33, adhesive layer 35 and heat sealability resin layer 34 successively lamination and At mode.In packaging material 3, substrate layer 31 becomes outermost layer side, and heat sealability resin layer 34 becomes innermost layer.It is assembling It, will by making the heat sealability resin layer 34 positioned at the edge of cell device 20 contact with each other on surface and carrying out thermal welding when battery Cell device 20 seals, and cell device 20 is packed.Wherein, indicate what use was obtained by moldings such as embossing moldings in Fig. 1~3 Battery 10 when the packaging material 3 of embossing type, packaging material 3 are also possible to unformed pouch-type.Wherein, pouch-type has tripartite close Envelope, quad seals, pillow-type etc., any type.
[substrate layer 31]
In packaging material 3, it is to form outermost layer that substrate layer 31, which is the layer for playing the function of the substrate as packaging material, The layer of side.
About the raw material for forming substrate layer 31, it is limited with having insulating properties, is not particularly limited.As formation substrate layer 31 Raw material, such as polyester, polyamide, epoxy, acrylic acid, fluororesin, polyurethane, silicone resin, phenolic aldehyde, polyetherimide can be enumerated Amine, polyimides, polycarbonate and their mixture or copolymer etc..
About the thickness of substrate layer 31, such as 3~50 μm or so can be enumerated, be preferably listed 10~35 μm or so.
[adhesive layer 32]
In packaging material 3, adhesive layer 32 is in order to the imparting adaptation of substrate layer 31 and as needed in substrate layer The layer configured on 31.That is, adhesive layer 32 is set as needed between substrate layer 31 and barrier layer 33.
Adhesive layer 32 is by that can form the bonding agent be bonded with barrier layer 33 of substrate layer 31.It is used to form adhesive layer 32 bonding agent can be biliquid curing type bonding agent, or single solution curing type bonding agent.In addition, viscous about being used to form The bonding mechanism for connecing the bonding agent of oxidant layer 32, is not particularly limited, chemical reaction type, solvent volatile-type, hot-melt type, hot pressing type Equal any types.
About the thickness of adhesive layer 32, such as 1~10 μm or so can be enumerated, be preferably listed 2~5 μm or so.
[barrier layer 33]
In packaging material, barrier layer 33 be with improve battery use packing material intensity and prevent vapor, oxygen, Light etc. invades the layer of the function of inside battery.As the metal for constituting barrier layer 33, aluminium, stainless steel, titanium etc. can be specifically enumerated, Aluminium is preferably listed.Barrier layer 33 for example can be by metal foil or metal deposition film, inorganic oxide evaporation film, carbon containing inorganic oxide Object evaporation film, film equipped with these evaporation films etc. are formed, and are preferably formed by metal foil, are more preferably formed by aluminium foil.From preventing From the perspective of barrier layer 33 generates fold or perforation when manufacturing battery use packing material, barrier layer is for example more preferably by by moving back Fire processing aluminium (JIS H4160:1994A8021H-O, JIS H4160:1994A8079H-O, JIS H4000: 2014A8021P-O, JIS H4000:2014A8079P-O) etc. soft aluminium foil formed.
About the thickness of barrier layer 33, as long as the function of the barrier layer as vapor etc. can be played, without spy It does not limit, such as can be 10~100 μm or so, preferably 10~80 μm or so.
[adhesive layer 35]
In packaging material 3, adhesive layer 35 is existed as needed in order to which heat sealability resin layer 34 to be bonded securely The layer being arranged between barrier layer 33 and heat sealability resin layer 34.
Adhesive layer 35 is by that can form the bonding agent be bonded with heat sealability resin layer 34 of barrier layer 33.It is viscous about being formed The composition of the bonding agent used when connecing layer, is not particularly limited, such as can enumerate the resin combination containing acid modified polyolefin Object.As acid modified polyolefin, such as may be exemplified and the same substance that is illustrated in the first polyolefin layer 12a.Also, may be used also With illustrate using unsaturated carboxylic acid or its acid anhydrides (such as the substance illustrated in the first polyolefin layer 12a) to low density polyethylene (LDPE), Polyethylene such as medium density polyethylene, high density polyethylene (HDPE), linear low density polyethylene (LLDPE) etc. carry out substance obtained from acid is modified.
About the thickness of adhesive layer 35, such as 1~50 μm or so can be enumerated, be preferably listed 2~40 μm or so.
[heat sealability resin layer 34]
In packaging material 3, heat sealability resin layer 34 is equivalent to innermost layer, is the heat sealability resin in assembled battery Layer each other thermal welding and by cell device seal layer.
The resin component used in heat sealability resin layer 34, with can thermal welding be limited, be not particularly limited, example Polyolefin, acid modified polyolefin can such as be enumerated.
As said polyolefins, can enumerate and the same substance or low-density that are illustrated in the first polyolefin layer 12a Polyethylene such as polyethylene, medium density polyethylene, high density polyethylene (HDPE), linear low density polyethylene (LLDPE) etc..In addition, modified poly- as acid Alkene can also be enumerated and the same substance that illustrates in the first polyolefin layer 12a.
In addition, the thickness as heat sealability resin layer 34, is not particularly limited, be preferably listed 100 μm or less, more preferably It enumerates 15~60 μm or so, further preferably enumerate 15~40 μm or so.
3. battery
It in the present invention, the use of the battery 10 of membranaceous packaging material include: that at least there is anode, cathode and electrolyte Cell device 20；Encapsulate the packaging material 3 of the cell device 20；It is electrically connected, with anode and cathode to packaging material 3 Outside metal terminal 2 outstanding.Battery 10 of the invention is characterized in that cementability protective film 1 of the invention is clipped in metal end Between son 2 and packaging material 3.
Specifically, at least having the cell device of anode, cathode and electrolyte, using packaging material 3, with just In the state that the metal terminal 2 that pole and cathode are separately connected protrudes outward, cementability protective film 1 of the invention is clipped in metal Between terminal 2 and heat sealability resin layer 34, the flange part (hot melt of packaging material can be formed at the edge of cell device 20 The region that connecing property resin layer 34 is in contact with each other, the edge part 3a of packaging material) mode cover, by the heat sealability tree of flange part Rouge layer 34 is heat-sealed with one another and makes its sealing, and thus, it is possible to improve the battery 10 for using packaging material 3.Wherein, packing timber is being used In the case where 3 storage cell device 20 of material, (connect with cell device 20 with the heat sealability resin layer 34 of packaging material 3 for inside The face of touching) mode use.
Each battery of the invention can be one-shot battery, any battery of secondary cell, preferably secondary cell.For two The type of primary cell, is not particularly limited, for example, can enumerate lithium ion battery, lithium ion polymer battery, lead storage battery, Nickel-hydrogen dattery, nickel-cadmium accumulator, Ni-Fe battery, nickel-zinc battery, oxidation silver zinc storage battery, metal-air battery, Polyvalent cation battery, capacitor (condenser), capacitor (capacitor) etc..In these secondary cells, it is preferably listed Lithium ion battery and lithium ion polymer battery.
Cementability protective film 1 of the invention can also be used to be clipped in metal terminal and encapsulate cell device packaging material it Between purposes other than purposes, can be widely used for resin component, metal parts, ceramic component using cementability protective film Deng the purposes for being sandwiched from two sides and being bonded it.Also, cementability protective film 1 of the invention can be widely used for and resin portion The purposes of the bondings such as part, metal parts, ceramic component and demand position precision.
Embodiment
Hereinafter, the present invention will be described in detail for illustrative embodiments and comparative example.But the present invention is not limited to realities Apply example.
The manufacture > of < cementability protective film
(embodiment 1)
In the polyethylene naphthalate (12 μm of PEN, thickness) as substrate for implementing two sides Corona discharge Treatment A side surface be coated with 50mg/m be calculated as with solid state component2Triphenyl methane -4,4 ', the bondings of 4 "-triisocyanates promotees Into agent, also, using extrusion coated 44 μ m thick of T mould extruder as the maleic anhydride modified polypropylene of the first polyolefin layer (PPa).Then, it is coated on another surface of substrate and 50mg/m is calculated as with solid state component2Same adhesion promoters, and benefit Use the PPa as the second polyolefin layer of extrusion coated 44 μ m thick of T mould extruder.Later, maturation process is carried out, PPa is obtained Cementability protective film made of (44 μm)/adhesion promoter oxidant layer/PEN (12 μm)/adhesion promoter oxidant layer/PPa (44 μm) lamination.Its In, the PPa as the first polyolefin layer, the second polyolefin layer is coloured using carbon black.
(embodiment 2)
In the polyethylene naphthalate (12 μm of PEN, thickness) as substrate for implementing two sides Corona discharge Treatment A side surface be coated with 50mg/m be calculated as with solid state component2Triphenyl methane -4,4 ', the bondings of 4 "-triisocyanates promotees Into agent, also, using extrusion coated 30 μ m thick of T mould extruder as the maleic anhydride modified polypropylene of the first polyolefin layer (PPa).Then, it is coated on another surface of substrate and 50mg/m is calculated as with solid state component2Same adhesion promoters, and benefit Coating PPa (30 μm of thickness) is coextruded in a manner of the side PPa and adhesion promoters layer laminate with T mould extruder and maleic anhydride changes Property polyethylene 2 layers of (33 μm of PEa, thickness), form the second polyolefin layer.Later, maturation process is carried out, PPa (30 μm)/viscous is obtained Connect cementability protective film made of promotion oxidant layer/PEN (12 μm)/adhesion promoter oxidant layer/PPa (30 μm)/PEa (33 μm) lamination. PPa contained by the PPa of first polyolefin layer, the second polyolefin layer is utilized respectively carbon black coloring.
(embodiment 3)
In a side surface of the non-woven fabrics (16 μm of thickness) of the polyethylene as substrate, is squeezed out and applied using T mould extruder The maleic anhydride modified polypropylene (PPa) as the first polyolefin layer of 67 μ m thick of cloth.Then, in the other side table of non-woven fabrics Face forms the second polyolefin layer using the PPa same as the first polyolefin layer of extrusion coated 67 μ m thick of T mould extruder.It Afterwards, maturation process is carried out, cementability protective film made of PPa (67 μm)/non-woven fabrics (16 μm)/PPa (67 μm) lamination is obtained. To the cementability protective film of white.
(embodiment 4)
In a side surface of the non-woven fabrics (12 μm of thickness) of the polyamide as substrate, is squeezed out and applied using T mould extruder The maleic anhydride modified polypropylene (PPa) as the first polyolefin layer of 44 μ m thick of cloth.Then, in the other side table of non-woven fabrics Face forms the second polyolefin layer using the PPa same as the first polyolefin layer of extrusion coated 44 μ m thick of T mould extruder.It Afterwards, maturation process is carried out, cementability protective film made of PPa (44 μm)/non-woven fabrics (12 μm)/PPa (44 μm) lamination is obtained. To flaxen cementability protective film.
(embodiment 5)
In a side surface of the non-extended polypropylene film (60 μm of CPP, thickness) as substrate, squeezed out using T mould extruder It is coated with the maleic anhydride modified polypropylene (PPa) as the first polyolefin layer of 20 μ m thicks.Then, in the other side table of substrate Face forms the second polyolefin layer using the PPa same as the first polyolefin layer of extrusion coated 20 μ m thick of T mould extruder.It Afterwards, maturation process is carried out, cementability protective film made of PPa (20 μm)/CPP (60 μm)/PPa (20 μm) lamination is obtained.
(embodiment 6)
In a side surface of the polypropylene screen (70 μm of PP, thickness) as substrate, extrusion coated 20 μm using T mould extruder Thickness as the polypropylene of the first polyolefin layer and the hybrid resin (PP+PE) of polyethylene.Then, in the other side table of substrate Face utilizes the hybrid resin (PP+PE) same as the first polyolefin layer of extrusion coated 20 μ m thick of T mould extruder.Later, into Row maturation process obtains cementability protective film made of PP+PE (20 μm)/PP (70 μm)/PP+PE (20 μm) lamination.
(embodiment 7)
It is poly- using T mould extruder coextrusion coating in a side surface of the polypropylene screen (10 μm of PP, thickness) as substrate 2 layers of the hybrid resin (PP+PE, 35 μm) of propylene (15 μm of PP, thickness) and polypropylene and polyethylene forms the first polyolefin layer. Then, in another side surface of substrate, painting polypropylene (15 μm of PP, thickness) and poly- third are equally coextruded using T mould extruder 2 layers of the hybrid resin (PP+PE, 25 μm) of alkene and polyethylene forms the second polyolefin layer.Later, maturation process is carried out, PP is obtained Cementability protective film made of+PE (35 μm)/PP (15 μm)/PP (10 μm)/PP (15 μm)/PP+PE (25 μm) lamination.PP(15μ M) it is colored as grey.
(embodiment 8)
In a side surface of the polypropylene screen (40 μm of PP, thickness) as substrate, extrusion coated 30 μm using T mould extruder The polypropylene of thickness and the hybrid resin (PP+PE) of polyethylene form the first polyolefin layer.Then, in the other side table of substrate Face forms the using the hybrid resin (PP+PE) same as the first polyolefin layer of extrusion coated 30 μ m thick of T mould extruder Dimerized cleans layer.Later, maturation process is carried out, obtains gluing made of PP+PE (30 μm)/PP (40 μm)/PP+PE (30 μm) lamination Connecing property protective film.
(comparative example 1)
Using 12 μm of thickness of polyethylene naphthalate (PEN) film as cementability protective film.
(comparative example 2)
There is the film of carbon black as cementability protective film (12 μ of thickness for being kneaded in polyethylene terephthalate (PET) m)。
(comparative example 3)
The film for having the color of carbon black more shallow than comparative example 2 will be kneaded in polyethylene terephthalate (PET) as bonding Property protective film (12 μm of thickness).
The measurement > through percentage of < light
Using spectrophotometer (the device name V670 of Japan Spectroscopy Corporation's production), for obtained each among the above Cementability protective film, from the light of the side of cementability protective film irradiation provision wavelengths, measure light penetrates percentage.Determination condition As described below.Show the result in table 1.
Data break: 1nm
Measurement range: 190nm~1500nm
Ultraviolet-visible bandwidth: 5.0nm
Near-infrared bandwidth: 20.0nm
Response: quick (Fast)
Scanning speed: 1000nm/min
Light source: deuterium discharge tube, halogen lamp
Light source switching: 340nm
Diffraction grating switching: 800nm
Firstly, using the measurement area for not placing sampleSpecimen holder, obtain baseline.Then, in the specimen holder On, it placesFor the cementability protective film of dimensions above as sample, measure light penetrates percentage.The light of wave-length coverage Be through percentage the light of wavelength interval 1nm within the scope of this average value through percentage.For example, wavelength 400nm or more The light of wavelength 800nm range below is to survey in range below wavelength 400nm above wavelength 800nm through percentage The average value through percentage through the obtained light of percentage of the light of the long every difference 1nm of standing wave.
The measurement > of < haze value
For each cementability protective film obtained as described above, using haze meter, (Murakami K. K.'s dye technology is studied Device name HM-150), according to JIS K7136:2000 measure haze value.Sample is having a size of 30mm × 30mm or so, light source For the halogen lamp with dichroscope, optical filter is A light, D65 light optical filtering suitching type, and light receiving element is plane silicon photocell. Wherein, JIS K7136:2000 is injection line, but HM-150 is multiray.In addition, JIS K7136:2000 can be suitable for mist The material below of angle value 40%, but be measured in the present invention as benchmark.Show the result in table 1.
The evaluation > of < position precision
Each cementability protective film obtained as described above is cut into 60mm (longitudinal direction) × 4mm (transverse direction) rectangle, point It Zhun Bei not be 2.Also, prepare the metal terminal (50mm (longitudinal direction) × 3mm (transverse direction)) of 1 100 μm of thickness of aluminum.Then, In a manner of the lateral central part pairing of the lateral central part and cementability protective film of metal terminal, it is longitudinally, laterally right to make It closes, and is sandwiched metal terminal from two sides using 2 cementability protective films, using hot plate from the two of 2 cementability protective films Side heat-sealing (heat seal condition is 190 DEG C of temperature, face pressure 1.0MPa, 3 seconds time), production metal terminal and cementability protective film Conjugant.Observe obtained conjugant, 2 cementability protective films underlapped part each other length within 0.1mm In the case where, it misplaces and is easy detection, amendment, being evaluated as cementability protective film can be configured with high position accuracy.On the other hand, In In the case that the length of underlapped part is more than 0.1mm each other, dislocation is difficult to detect, and is evaluated as the configuration of cementability protective film Position precision it is low, misplaced.Carry out 10 each cementability protective films position precision measurement, according to following benchmark into Row evaluation.Show the result in table 1.
A: dislocation occurs as 0 time
B: dislocation is only 1 time
C: dislocation occurs as 2 times or more
[table 1]
Using T400-800In the case where cementability protective film for 25% or more 91% Examples 1 to 8 below, 2 The part of cementability protective film overlapping and the color difference of underlapped part are big, dislocation is easy corrects, therefore, as shown in Table 1, Cementability protective film can be configured with high position accuracy.On the other hand, in T400-800In comparative example 1 more than 91%, 2 bondings Property protective film overlapping part and underlapped part color difference it is small, dislocation be difficult to detect, therefore, become cementability protective film The low result of the position precision of configuration.On the other hand, in T400-800In comparative example 2 lower than 25%, 2 cementability protective films The part of overlapping and the color difference of underlapped part are small, and dislocation is difficult to detect, and therefore, become the position of the configuration of cementability protective film Set the low result of precision.
The measurement > through percentage of light when 2 cementability protective films are overlapped by <
For each cementability protective film of embodiment 1,2,7 and comparative example 3, in addition to by 2 identical cementability protective films Same as the measurement > through percentage of above-mentioned < light to operate other than overlapping is measured, measure light penetrates percentage T (II)400-800.Wherein, the method being overlapped as 2 pastes 100 μm of left sides of thickness in the upper and lower end parts of a cementability protective film Right double faced adhesive tape, is bonded another cementability protective film in a manner of not generating fold, implements to measure using the sample.By sample The part of product not being bonded using double faced adhesive tape is as measurement site.It indicates to survey 1 each cementability protective film in following table 2 The light obtained penetrates percentage T400-800, light that 2 each cementability protective films overlappings measure penetrated into percentage T (II)400-800, light penetrate percentage T400-800With light through percentage T (II)400-800Absolute value of the difference (| T400-800 T(II)400-800|) and above-mentioned position precision result.
[table 2]
Result as shown in Table 2 is it is found that penetrate percentage T the cementability protective film as coloring, light400-800With Light penetrates percentage T (II)400-800Absolute value of the difference (| T400-800- T (II)400-800|) in big embodiment 1,2,7, energy It is enough that cementability protective film is configured with high position accuracy.
The measurement > of haze value when 2 cementability protective films are overlapped by <
For each cementability protective film of embodiment 1,2,4,5 and comparative example 1, in addition to 2 identical cementabilities are protected It is same as the above-mentioned measurement > of < haze value to operate other than film overlapping is measured, it measures haze value (II).Wherein, as 2 The method of piece overlapping pastes 100 μm or so of double faced adhesive tape in the upper and lower end parts of a cementability protective film, not generate fold Mode be bonded another cementability protective film, utilize the sample implement measurement.Sample is not utilized into double faced adhesive tape fitting Part is used as measurement site.The haze value measured to 1 each cementability protective film is indicated in following Table 3, by 2 each cementabilities The protective film haze value (II) that measures of overlapping and haze value and haze value (II) absolute value of the difference (| haze value-haze value (II) |) and above-mentioned position precision result.
[table 3]
Embodiment 1 Embodiment 2 Embodiment 4 Embodiment 5 Comparative example 1
Haze value 84.2 62.9 70.6 83.5 8.6
Haze value (II) 93.6 86.3 91.3 93.3 16.8
| haze value-haze value (II) | 9.4 23.4 20.7 9.8 8.2
Position precision A A A A C
Result as shown in Table 3 it is found that haze value and haze value (II) absolute value of the difference (| haze value-haze value (II) |) in big embodiment 1,2,4,5, cementability protective film can be configured with high position accuracy.
Symbol description
1: cementability protective film；2: metal terminal；3: packaging material；10: battery；11: substrate；12a: the first polyolefin Layer；12aa: the first polyolefin layer；12ab: the first polyolefin layer；12b: the second polyolefin layer；12ba: the second polyolefin layer； 12bb: the second polyolefin layer；13: adhesion promoter oxidant layer；20: cell device；31: substrate layer；32: adhesive layer；33: barrier Layer；34: heat sealability resin layer；35: adhesive layer.

Claims (22)

1. a kind of cementability protective film, it is characterised in that:
The T of the cementability protective film400-800It is 25% or more 91% or less, wherein the T400-800It is to utilize spectrophotometer The average value through percentage of the light of the every difference 1nm of wavelength in the range of the wavelength 400nm above wavelength 800nm or less measured.
2. cementability protective film as described in claim 1, it is characterised in that:
The T of the cementability protective film800-1200It is 30% or more, wherein the T800-1200It is to be measured using spectrophotometer The average value through percentage of the light of the every difference 1nm of wavelength in the range of wavelength 800nm above wavelength 1200nm or less.
3. cementability protective film as claimed in claim 1 or 2, it is characterised in that:
The T of the cementability protective film300-400It is 89.00% or less, wherein the T300-400It is to be measured using spectrophotometer Wavelength 300nm above wavelength 400nm or less range in the every difference 1nm of wavelength light the average value through percentage.
4. cementability protective film according to any one of claims 1 to 3, it is characterised in that:
The T of the cementability protective film400-800Divided by T300-400Obtained value is in 0.90 or more 8.00 range below It is interior, wherein the T300-400It is wave in the range of the wavelength 300nm above wavelength 400nm or less measured using spectrophotometer The average value through percentage of the light of long every difference 1nm.
5. cementability protective film as described in any one of claims 1 to 4, it is characterised in that:
The light of the wavelength 500nm measured using spectrophotometer penetrates percentage T500Divided by what is measured using spectrophotometer The light of wavelength 700nm penetrates percentage T700Value in 0.75 or more 0.99 range below.
6. such as cementability protective film according to any one of claims 1 to 5, it is characterised in that:
The light of the wavelength 550nm measured using spectrophotometer penetrates percentage T550Divided by what is measured using spectrophotometer The light of wavelength 350nm penetrates percentage T350Value in 1.00 or more 35.00 ranges below.
7. such as cementability protective film according to any one of claims 1 to 6, it is characterised in that:
The haze value of the cementability protective film is in 50 or more 89 ranges below.
8. such as cementability protective film according to any one of claims 1 to 7, it is characterised in that:
T(II)400-800With the T400-800Absolute value of the difference be 13 or more, wherein the T (II)400-800Being will be described in 2 The overlapping of cementability protective film, the wavelength 400nm above wavelength 800nm or less measured using spectrophotometer range in wavelength it is every The average value through percentage of the light of poor 1nm.
9. such as cementability protective film according to any one of claims 1 to 8, it is characterised in that:
The wavelength 400nm above wavelength 800nm or less that 2 cementability protective films are overlapped, are measured using spectrophotometer In the range of the every difference 1nm of wavelength light the average value T (II) through percentage400-800It is 5% or more 50% or less.
10. such as cementability protective film according to any one of claims 1 to 9, it is characterised in that:
Absolute value of the difference by haze value (II) and the haze value that 2 cementability protective films overlappings measure be 8.5 with On.
11. such as cementability protective film according to any one of claims 1 to 10, it is characterised in that: include at least substrate and position In the first polyolefin layer formed by acid modified polyolefin or polyolefin on a side surface of the substrate.
12. cementability protective film as claimed in claim 11, it is characterised in that:
Including at least the second polyene formed by acid modified polyolefin or polyolefin on another side surface for being located at the substrate Hydrocarbon layers.
13. cementability protective film as claimed in claim 12, it is characterised in that:
At least one party of first polyolefin layer and second polyolefin layer is constituted by 2 layers or more.
14. the cementability protective film as described in any one of claim 11~13, it is characterised in that: the substrate and described the Between one polyolefin layer and either between the substrate and second polyolefin layer or both sides have adhesion promoters Layer.
15. the cementability protective film as described in any one of claim 1~14, it is characterised in that: the cementability protective film It is to be clipped in and the metal terminal of the electrode of cell device electrical connection, bonding between the packaging material of the encapsulation cell device Property protective film.
16. cementability protective film as claimed in claim 15, it is characterised in that:
The packaging material by least successively being constituted including the laminated body of substrate layer, barrier layer and heat sealability resin layer,
The cementability protective film is clipped between the heat sealability resin layer and the metal terminal.
17. a kind of battery characterized by comprising
At least there is the cell device of anode, cathode and electrolyte；Encapsulate the packaging material of the cell device；And with it is described just Pole and the cathode are electrically connected and to the outside of packaging material metal terminals outstanding,
Cementability protective film described in any one of claim 1~16 be clipped in the metal terminal and the packaging material it Between.
18. a kind of manufacturing method of battery, it is characterised in that:
The battery includes: the cell device at least with anode, cathode and electrolyte；Encapsulate the packing timber of the cell device Material；And be electrically connected with the anode and the cathode and to the outside of packaging material metal terminal outstanding,
The manufacturing method of the battery includes that cementability protective film described in any one of claim 1~16 is made to be clipped in the gold Belong to the process between terminal and the packaging material.
19. a kind of cementability protective film, it is characterised in that:
Haze value is in 50 or more 89 ranges below.
20. a kind of cementability protective film, it is characterised in that:
It is the cementability protective film by coloring,
T400-800With T (II)400-800Absolute value of the difference be 13 or more, wherein the T400-800It is to the cementability protective film The transmission hundred of the light of the every difference 1nm of wavelength in the range of the wavelength 400nm above wavelength 800nm or less measured using spectrophotometer Divide the average value of rate, the T (II)400-800It is the wave that 2 cementability protective films are overlapped, are measured using spectrophotometer The average value through percentage of the light of the every difference 1nm of wavelength in the range of long 400nm above wavelength 800nm or less.
21. a kind of cementability protective film, it is characterised in that:
It is the cementability protective film by coloring,
T(II)400-800It is 5% or more 50% or less, wherein the T (II)400-800It is by 2 cementability protective film weights Folded, the every difference 1nm of wavelength in the range of wavelength 400nm above wavelength 800nm or less that is measured using spectrophotometer light it is saturating Cross the average value of percentage.
22. a kind of cementability protective film, it is characterised in that:
Haze value that the cementability protective film is measured, with by the Chong Die haze value measured of 2 cementability protective films (II) absolute value of the difference is 8.5 or more.
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Families Citing this family (5)

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CN114096628A (en) * 2019-07-10 2022-02-25 大日本印刷株式会社 Adhesive film for metal terminal, metal terminal with adhesive film for metal terminal, electric storage device using adhesive film for metal terminal, and method for manufacturing electric storage device
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EP4170786A1 (en) * 2020-06-23 2023-04-26 Fujimori Kogyo Co., Ltd. Sealing film, electrode lead member, and battery

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003123710A (en) * 2001-10-19 2003-04-25 Dainippon Printing Co Ltd Film for lead wire
JP2004095543A (en) * 2002-08-06 2004-03-25 Dainippon Printing Co Ltd Adhesive film for sealing lithium battery metal terminal part
CN103222084A (en) * 2010-11-11 2013-07-24 藤森工业株式会社 Process for producing sealing film, and sealing film
JP2014208729A (en) * 2013-04-16 2014-11-06 株式会社カネカ Laminated sealant film for sealing tab lead composed of modified polyolefin-based resin film and thermoplastic resin film
JP2017069107A (en) * 2015-09-30 2017-04-06 大日本印刷株式会社 Adhesive protection film

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009027283A1 (en) * 2009-04-03 2010-10-07 Tesa Se Adhesive film for closing vessels and channels, production and use thereof
JP6281176B2 (en) 2013-01-07 2018-02-21 凸版印刷株式会社 Electrode terminal, manufacturing method thereof, and battery pack
KR20210130275A (en) * 2013-08-01 2021-10-29 린텍 가부시키가이샤 Protective film formation-use composite sheet
JP6673208B2 (en) * 2014-09-30 2020-03-25 大日本印刷株式会社 Adhesive film for metal terminals
JP2016186873A (en) * 2015-03-27 2016-10-27 大日本印刷株式会社 Adhesive film for metal terminal

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003123710A (en) * 2001-10-19 2003-04-25 Dainippon Printing Co Ltd Film for lead wire
JP2004095543A (en) * 2002-08-06 2004-03-25 Dainippon Printing Co Ltd Adhesive film for sealing lithium battery metal terminal part
CN103222084A (en) * 2010-11-11 2013-07-24 藤森工业株式会社 Process for producing sealing film, and sealing film
JP2014208729A (en) * 2013-04-16 2014-11-06 株式会社カネカ Laminated sealant film for sealing tab lead composed of modified polyolefin-based resin film and thermoplastic resin film
JP2017069107A (en) * 2015-09-30 2017-04-06 大日本印刷株式会社 Adhesive protection film

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