TW201544313A - Shapeable packaging material and shaped enclosure - Google Patents

Shapeable packaging material and shaped enclosure Download PDF

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Publication number
TW201544313A
TW201544313A TW104112343A TW104112343A TW201544313A TW 201544313 A TW201544313 A TW 201544313A TW 104112343 A TW104112343 A TW 104112343A TW 104112343 A TW104112343 A TW 104112343A TW 201544313 A TW201544313 A TW 201544313A
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Taiwan
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layer
packaging material
mass
molding
metal foil
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TW104112343A
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Chinese (zh)
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TWI649194B (en
Inventor
Susumu Takada
Yuji Minamibori
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Showa Denko Packaging Co Ltd
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Publication of TW201544313A publication Critical patent/TW201544313A/en
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Publication of TWI649194B publication Critical patent/TWI649194B/en

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • H01M50/116Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00Layered products comprising a layer of metal
    • B32B15/04Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00Layered products comprising a layer of metal
    • B32B15/04Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/09Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/18Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00Ancillary operations in connection with laminating processes
    • B32B38/14Printing or colouring
    • B32B38/145Printing
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • H01M50/116Primary casings; Jackets or wrappings characterised by the material
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • H01M50/116Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • H01M50/1245Primary casings; Jackets or wrappings characterised by the material having a layered structure characterised by the external coating on the casing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00Containers; Receptacles
    • B32B2439/70Food packaging
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00Electrical equipment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00Electrical equipment
    • B32B2457/10Batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)

Abstract

The present invention provides a shapeable packaging material 1, which comprises: a heat-resistant resin layer 2 serving as an outer layer, a thermoplastic resin layer 3 serving as an inner layer, a metal foil layer 4 arranged between these two layers, and a coloring ink layer 10 arranged between the metal foil layer and the heat-resistant resin layer and is characterized in that the coloring ink layer 10 is made out of a coloring ink composition, which comprises: a two-liquid hardening polyester polyurethane resin bonding agent composed of a polyester resin serving as a primary agent and a polyfunctional isocyanate compound serving as a hardening agent and a coloring pigment comprising an inorganic pigment. The polyester rasin has a number average molecular weight (Mn) of 8,000-25,000, a mass average molecular weight (Mw) of 15,000-50,000, and the ratio Mw/Mn is 1.3-2.5. The polyfunctional isocyanate compound comprises more than 50 mole% of aromatic polyfunctional isocyanate compound. The present invention provides a shapeable packaging material, which, in shaping and sealing, prevents the heat-resistant resin layer from peeling off, even in a slightly severe environment having high temperature and humidity.

Description

成形用包裝材及成形外殼 Forming packaging material and forming shell

本發明係關於例如可較佳地作為筆記型電腦用、行動電話用、車載用、固定型的蓄電池(鋰離子蓄電池)的外殼而使用;除此之外,亦可較佳地作為食品的包裝材、醫藥品的包裝材的成形用包裝材及成形外殼而使用者。 The present invention relates to, for example, a housing for a notebook computer, a mobile phone, a vehicle, or a stationary battery (lithium ion battery); in addition, it can be preferably used as a food package. Users of packaging materials for forming packaging materials for pharmaceuticals and pharmaceuticals, and molded outer casings.

鋰離子蓄電池等電池,為了統一裝設對象的電氣機器等機器的外觀與色彩,逐漸增加對著色的要求。例如,為了賦予穩重感、高級感,較多係將機器著色成黑色,此時電池亦往往著色成黑色。 A battery such as a lithium ion battery is required to gradually increase the coloring requirements in order to unify the appearance and color of a device such as an electric device. For example, in order to impart a sense of stability and a sense of high quality, the machine is colored black, and the battery is often colored black.

此種的電池,係電池本體由包裝材(成形外殼)所包裝而成者,該包裝材一般係於金屬箔的兩面積層基材樹脂層所成的積層體。因此,欲將電池著色時,有以下手段:將電池之包裝材所使用的基材樹脂層著色、於基材樹脂層的下方設置著色印刷層、將基材樹脂層與金屬箔之間的接著劑層著色、若基材樹脂層係由複數層構成時則將此等層間的接著劑層著色等。 In such a battery, the battery main body is packaged by a packaging material (molded outer casing), and the packaging material is generally a laminated body formed of a two-layer base resin layer of a metal foil. Therefore, when the battery is to be colored, there is a method of coloring the base resin layer used for the packaging material of the battery, providing a colored printed layer under the base resin layer, and continuing the substrate resin layer with the metal foil. When the base layer resin layer is composed of a plurality of layers, the adhesive layer between the layers is colored or the like.

以往,具有著色層之電池用包裝材,習知為:具有將基材層、接著劑層、金屬箔層、熱接著性樹脂層依序積層而成之構造,且係於基材 層、接著劑層、金屬箔層中之任一層含有珠光顏料或螢光顏料作為識別標示之構成者(參照專利文獻1);具有將基材層、接著劑層、金屬箔層、熱接著性樹脂層依序積層而成之構造,且於基材層、接著劑層、金屬箔層中之任一層添加顏料作為識別標示而成者(參照專利文獻2)。 Conventionally, a battery packaging material having a colored layer has a structure in which a base material layer, an adhesive layer, a metal foil layer, and a thermal adhesive resin layer are sequentially laminated, and is attached to a substrate. Any one of the layer, the adhesive layer, and the metal foil layer contains a pearl pigment or a fluorescent pigment as a constituent of the identification mark (refer to Patent Document 1); and has a base material layer, an adhesive layer, a metal foil layer, and thermal adhesion. The resin layer is laminated in a layered manner, and a pigment is added to any of the base layer, the adhesive layer, and the metal foil layer as an identification mark (see Patent Document 2).

此外,為提升電池之放熱性,習知為在金屬箔層與外層薄膜間具備碳材料等之黑體材料層之電池用外裝材(參照專利文獻3)。 In addition, in order to improve the heat dissipation property of the battery, a battery exterior material having a black material layer such as a carbon material is provided between the metal foil layer and the outer film (see Patent Document 3).

【先前技術文獻】[Previous Technical Literature] 【專利文獻】[Patent Literature]

【專利文獻1】國際公開第2011/016506號公報 [Patent Document 1] International Publication No. 2011/016506

【專利文獻2】特開2011-054563號公報 [Patent Document 2] JP-A-2011-054563

【專利文獻3】特開2011-096552號公報 [Patent Document 3] Special Publication 2011-096552

一般而言,將薄膜材、片材著色為黑色時,一般係以含碳黑等無機顏料的印刷油墨來設置印刷層。 In general, when a film material or a sheet material is colored black, a printing layer is generally provided by a printing ink containing an inorganic pigment such as carbon black.

然而,為了將電池著色為黑色,將含有碳黑作為顏料的黑色印刷層設置在構成電池包裝材的外側樹脂層的內面時,會產生下列問題。 However, in order to color the battery to black, when the black printing layer containing carbon black as a pigment is provided on the inner surface of the outer resin layer constituting the battery packaging material, the following problems occur.

亦即,將上述黑色包裝材進行深引伸成形或鼓脹成形而成形為容器(外殼)形狀時,會產生外側樹脂層由包裝材之黑色印刷層剝離的問題。 That is, when the black packaging material is subjected to deep drawing or bulging to form a shape of a container (outer casing), there is a problem that the outer resin layer is peeled off from the black printed layer of the packaging material.

如此之外側樹脂層的剝離,會發生在對於封入電極或電解液後的黑色包裝材進行密封時,或亦會發生於黑色包裝材所包裝的電池在高溫多濕等的稍微嚴苛的環境下使用時。 Such peeling of the outer side resin layer may occur when the black packaging material after sealing the electrode or the electrolytic solution is sealed, or the battery packaged in the black packaging material may be subjected to a slightly harsh environment such as high temperature and humidity. when using it.

並且,上述諸問題不限於使用碳黑的黑色包裝材,亦發生於使用其他無機顏料並以同樣方式著色成各種顏色的著色包裝材。 Further, the above problems are not limited to the use of black packaging materials using carbon black, but also in colored packaging materials which are colored in the same manner using other inorganic pigments in the same manner.

本發明係鑒於該技術背景而創作,目的在於提供一種成形用包裝材,其於成形時及密封時,且即使在高溫多濕等的稍微嚴苛的環境下使用時,耐熱性樹脂層亦不會剝離。 The present invention has been made in view of the above technical background, and an object of the present invention is to provide a packaging material for molding which is not used even when it is used in a slightly harsh environment such as high temperature and humidity during molding and sealing. Will be stripped.

為達成前述目的,本發明提供以下之手段。 To achieve the foregoing objects, the present invention provides the following means.

〔1〕一種成形用包裝材,其係包含:作為外側層之耐熱性樹脂層、作為內側層之熱可塑性樹脂層、配設於此等兩層間之金屬箔層、及配設於該金屬箔層與前述耐熱性樹脂層之間之著色油墨層,其特徵為:前述著色油墨層,係由著色油墨組成物所成,該著色油墨組成物係包含:作為主劑之聚酯樹脂及作為硬化劑之多官能異氰酸酯化合物所成之二液硬化型聚酯聚氨酯樹脂接著劑、及含有無機顏料之著色顏料;前述作為主劑之聚酯樹脂之數目平均分子量(Mn)為8000~25000,質量平均分子量(Mw)為15000~50000,該等之比率(Mw/Mn)為1.3~2.5; 前述作為硬化劑之多官能異氰酸酯化合物之50莫爾%以上為芳香族系多官能異氰酸酯化合物。 [1] A packaging material for molding, comprising: a heat resistant resin layer as an outer layer; a thermoplastic resin layer as an inner layer; a metal foil layer disposed between the two layers; and a metal foil disposed thereon A colored ink layer between the layer and the heat resistant resin layer, wherein the colored ink layer is formed of a colored ink composition comprising: a polyester resin as a main component and as a hardening A two-liquid-curing polyester urethane resin adhesive composed of a polyfunctional isocyanate compound and a coloring pigment containing an inorganic pigment; the number average molecular weight (Mn) of the polyester resin as a main component is 8000 to 25000, and the mass average The molecular weight (Mw) is from 15,000 to 50,000, and the ratio (Mw/Mn) is from 1.3 to 2.5; The 50% by mole or more of the polyfunctional isocyanate compound as the curing agent is an aromatic polyfunctional isocyanate compound.

〔2〕如前項1所記載之成形用包裝材,其中,前述著色油墨層中,相對於前述作為主劑之聚酯樹脂及前述著色顏料之合計質量,著色顏料之含有質量的比例為5質量%~60質量%。 The packaging material for molding according to the above-mentioned item 1, wherein the ratio of the mass of the coloring pigment to the total mass of the polyester resin as the main component and the coloring pigment is 5 mass. %~60% by mass.

〔3〕如前項1或2所記載之成形用包裝材,其中,前述著色顏料之50質量%以上係由前述無機顏料所構成。 The packaging material for molding according to the above-mentioned item 1 or 2, wherein 50% by mass or more of the coloring pigment is composed of the inorganic pigment.

〔4〕如前項1~3中任一項所記載之成形用包裝材,其中,前述二液硬化型聚酯聚氨酯樹脂接著劑,其藉由前述主劑與前述硬化劑反應後之硬化膜的拉伸試驗(JIS K7162)獲得之楊氏模量為70MPa~400MPa。 [4] The packaging material for molding according to any one of the preceding claims, wherein the two-liquid-curable polyester urethane resin adhesive agent is a cured film obtained by reacting the main agent with the curing agent. The Young's modulus obtained by the tensile test (JIS K7162) was 70 MPa to 400 MPa.

〔5〕如前項1~4中任一項所記載之成形用包裝材,其中,於前述金屬箔層之至少一面形成有化成皮膜者。 [5] The packaging material for molding according to any one of the preceding claims, wherein the film is formed on at least one surface of the metal foil layer.

〔6〕一種成形外殼,其特徵為其係對前項1~5中任一項所記載之成形用包裝材進行深引伸成形或鼓脹成形而成者。 [6] A molded case obtained by deep drawing or bulging a molding packaging material according to any one of the items 1 to 5 above.

〔7〕如前項6所記載之成形外殼,其中,其係作為電池外殼使用者。 [7] The molded case according to the above item 6, wherein the molded case is a battery case user.

根據〔1〕的發明,由於在金屬箔層與耐熱性樹脂層之間設置有著色油墨層,因此可賦予成形用包裝材之外面側顏色。此外,由於著色油墨層係由著色油墨組成物所構成,而該著色油墨組成物係包含:作為 主劑之聚酯樹脂及作為硬化劑之多官能異氰酸酯化合物所成之二液硬化型聚酯聚氨酯樹脂接著劑、及含有無機顏料之著色顏料所成;且前述作為主劑之聚酯樹脂之數目平均分子量(Mn)為8000~25000,質量平均分子量(Mw)為15000~50000,該等之比率(Mw/Mn)為1.3~2.5;因此著色油墨層(著色油墨塗膜)可獲得適當的強度、延伸度、與優異之耐熱性。更進一步,因多官能異氰酸酯化合物之50莫爾%以上係由芳香族系多官能異氰酸酯化合物所構成,故可提升硬化後之接著強度。從而,在對此包裝材進行深引伸成形、鼓脹成形等的成形時,且在將包裝材密封以進行封裝時,耐熱性樹脂層不會由著色油墨層剝離。此外,即使在高溫多濕等的稍微嚴苛的環境下使用時,耐熱性樹脂層亦不會由著色油墨層剝離。 According to the invention of [1], since the colored ink layer is provided between the metal foil layer and the heat resistant resin layer, the color of the outer surface side of the packaging material for molding can be imparted. Further, since the colored ink layer is composed of a colored ink composition, the colored ink composition includes: a two-liquid hardening type polyester urethane resin adhesive composed of a polyester resin of a main agent and a polyfunctional isocyanate compound as a curing agent, and a coloring pigment containing an inorganic pigment; and the number of the above-mentioned polyester resin as a main component The average molecular weight (Mn) is 8000 to 25000, the mass average molecular weight (Mw) is 15,000 to 50,000, and the ratio (Mw/Mn) is 1.3 to 2.5; therefore, the colored ink layer (colored ink coating film) can be used. Appropriate strength, elongation, and excellent heat resistance are obtained. Further, since 50 mol% or more of the polyfunctional isocyanate compound is composed of an aromatic polyfunctional isocyanate compound, the adhesion strength after curing can be improved. Therefore, when the packaging material is subjected to deep drawing molding, bulging molding or the like, and the packaging material is sealed for packaging, the heat resistant resin layer is not peeled off from the colored ink layer. Further, even when used in a slightly harsh environment such as high temperature and high humidity, the heat resistant resin layer is not peeled off from the colored ink layer.

根據〔2〕的發明,著色油墨層中,相對於聚酯聚氨酯樹脂接著劑與著色顏料之合計質量,著色顏料之含有比例為5質量%~60質量%,藉由在5質量%以上可得到充分隱蔽金屬箔層之效果,使金屬光澤無法直接以肉眼辨識,從而賦予穩重感、高級感,同時在60質量%以下,可充分確保著色油墨層對於耐熱性樹脂層之接著力。 According to the invention of [2], the content of the coloring pigment is 5% by mass to 60% by mass based on the total mass of the polyester urethane resin adhesive and the coloring pigment, and is 5% by mass or more. When the effect of the metal foil layer is sufficiently concealed, the metallic luster can not be directly recognized by the naked eye, and a feeling of stability and a high-grade feeling can be imparted, and at 60% by mass or less, the adhesion of the colored ink layer to the heat resistant resin layer can be sufficiently ensured.

根據〔3〕的發明,由於前述著色顏料之50質量%以上係由無機顏料所構成,故可得到更充分之隱蔽金屬箔層之隱蔽力,藉此,可形成能賦予更加充分之穩重感、高級感的特定色調之著色油墨層。又,傳統上,一般為提升隱蔽力,而將著色顏料中之無機顏料之含有率設計在50質量%以上時,會產生該著色油墨層之密著力降低的問題,然而,本發明採用「作為主劑之聚酯樹脂之數目平均分子量(Mn)為8000~2 5000,質量平均分子量(Mw)為15000~50000,該等之比率(Mw/Mn)為1.3~2.5,且多官能異氰酸酯化合物之50莫爾%以上係由芳香族系多官能異氰酸酯化合物所構成」之限定構成,因此即使採用「著色顏料之50質量%以上為無機顏料所構成」之構成,仍可確保著色油墨層具有充分的密著力。 According to the invention of [3], since 50% by mass or more of the coloring pigment is composed of an inorganic pigment, a concealing force for further concealing the metal foil layer can be obtained, whereby a more stable feeling can be formed, A color-sensitive ink layer of a specific tone of high-grade feeling. Further, conventionally, in order to improve the hiding power, when the content of the inorganic pigment in the coloring pigment is designed to be 50% by mass or more, the problem of lowering the adhesion of the colored ink layer is caused. However, the present invention adopts "as a The number average molecular weight (Mn) of the polyester resin of the main agent is 8000~2 5000, the mass average molecular weight (Mw) is 15000 to 50000, the ratio (Mw/Mn) is 1.3 to 2.5, and more than 50% by mole of the polyfunctional isocyanate compound is derived from the aromatic polyfunctional isocyanate. Since the composition of the compound is a limited configuration, even if the configuration is such that "50% by mass or more of the coloring pigment is composed of an inorganic pigment", it is possible to ensure sufficient adhesion of the colored ink layer.

根據〔4〕的發明,可使上述效果(在成形時及密封時,又即使在高溫多濕等的稍微嚴苛的環境下使用時,耐熱性樹脂層亦不會由著色油墨層剝離之效果)特別的優異。 According to the invention of [4], the above-described effects (the effect of peeling off the heat-resistant resin layer from the colored ink layer even when used in a slightly harsh environment such as high temperature and humidity during molding and sealing) can be obtained. ) exceptionally excellent.

根據〔5〕的發明,因在金屬箔層之至少一面形成有化成皮膜,故可充分防止金屬箔的腐蝕,從而可提供高耐腐蝕性的成形用包裝材。 According to the invention of [5], since the chemical conversion film is formed on at least one surface of the metal foil layer, corrosion of the metal foil can be sufficiently prevented, and a packaging material for molding having high corrosion resistance can be provided.

根據〔6〕的發明,可提供不僅在密封時,且即使在高溫多濕等的稍微嚴苛的環境下使用時,耐熱性樹脂層亦不會由著色油墨層剝離的成形外殼。 According to the invention of [6], it is possible to provide a molded case in which the heat-resistant resin layer is not peeled off from the colored ink layer even when it is used in a slightly harsh environment such as high temperature and humidity.

根據〔7〕的發明,可提供不僅在密封時,且即使在高溫多濕等的稍微嚴苛的環境下使用時,耐熱性樹脂層亦不會由著色油墨層剝離的電池外殼。 According to the invention of [7], it is possible to provide a battery case in which the heat-resistant resin layer is not peeled off from the colored ink layer even when it is used in a slightly harsh environment such as high temperature and humidity.

1‧‧‧成形用包裝材 1‧‧‧Forming packaging materials

2‧‧‧耐熱性樹脂層(外側層) 2‧‧‧Heat resistant resin layer (outer layer)

3‧‧‧熱可塑性樹脂層(內側層) 3‧‧‧ thermoplastic resin layer (inner layer)

4‧‧‧金屬箔層 4‧‧‧metal foil layer

4a‧‧‧金屬箔層內側面 4a‧‧‧ inside the metal foil layer

5‧‧‧第1接著劑層 5‧‧‧1st adhesive layer

6‧‧‧第2接著劑層 6‧‧‧2nd adhesive layer

10‧‧‧著色油墨層 10‧‧‧Colored ink layer

20‧‧‧馬特塗層 20‧‧‧Matt coating

【圖1】為表示本發明的成形用包裝材的一實施型態之斷面圖。 Fig. 1 is a cross-sectional view showing an embodiment of a packaging material for molding of the present invention.

【圖2】為表示本發明的成形用包裝材的另一實施型態之斷面圖。 Fig. 2 is a cross-sectional view showing another embodiment of the packaging material for molding of the present invention.

【圖3】為二液硬化型聚酯聚氨酯樹脂接著劑的硬化膜之S-S曲線 圖。 [Fig. 3] is an S-S curve of a cured film of a two-liquid-curing polyester urethane resin adhesive Figure.

本發明之成形用包裝材1的一實施型態如圖1所示。此成形用包裝材1,係作為鋰離子蓄電池外殼用包裝材使用。亦即,前述成形用包裝材1,係被提供至深引伸成形等的成形而作為蓄電池外殼使用者。 An embodiment of the packaging material for forming 1 of the present invention is shown in Fig. 1. This molding packaging material 1 is used as a packaging material for a lithium ion battery case. In other words, the molding packaging material 1 is supplied to a deep drawing or the like to be used as a battery case user.

前述成形用包裝材1,係包含在金屬箔層4的上表面隔著第1接著劑層5與耐熱性樹脂層(外側層)2積層一體化,並同時在前述金屬箔層4的下表面隔著第2接著劑層6與熱可塑性樹脂層(內側層)3積層一體化而成之構成。此外,在前述金屬箔層4與前述耐熱性樹脂層2之間配置有著色油墨層10(參照圖1)。本實施型態,係在前述金屬箔層4的上表面隔著第1接著劑層5積層與前述著色油墨層10積層,並在該著色油墨層10的上表面與前述耐熱性樹脂層2積層(參照圖1)。此外,本實施型態中,在前述耐熱性樹脂層2之下表面係藉由印刷而積層有前述著色油墨層10。 The packaging material for molding 1 is formed by laminating the upper surface of the metal foil layer 4 with the heat-resistant resin layer (outer layer) 2 via the first adhesive layer 5, and simultaneously on the lower surface of the metal foil layer 4. The second adhesive layer 6 and the thermoplastic resin layer (inner layer) 3 are laminated and integrated. Further, a colored ink layer 10 is disposed between the metal foil layer 4 and the heat resistant resin layer 2 (see FIG. 1). In the present embodiment, the colored ink layer 10 is laminated on the upper surface of the metal foil layer 4 via the first adhesive layer 5, and the heat resistant resin layer 2 is laminated on the upper surface of the colored ink layer 10. (Refer to Figure 1). Further, in the present embodiment, the colored ink layer 10 is laminated on the lower surface of the heat-resistant resin layer 2 by printing.

接著,對於本發明中各構成層進行詳細說明。 Next, each constituent layer in the present invention will be described in detail.

(耐熱性樹脂層) (heat resistant resin layer)

前述耐熱性樹脂層(外側層)2,雖無特別限定,但可列舉例如為,聚醯胺薄膜、聚酯薄膜等,使用此等的延伸薄膜為佳。其中,前述耐熱性樹脂層2,就成形性及強度觀點,以使用二軸延伸聚醯胺薄膜、二軸延伸聚對苯二甲酸丁二醇酯(PBT)膜、二軸延伸聚對苯二甲酸乙二醇酯(PET)膜、或二軸延伸聚萘二甲酸乙二醇酯(PEN)膜為特 佳。前述聚醯胺薄膜,雖無特別限定,但可列舉例如為,6-尼龍薄膜、6,6尼龍薄膜、MXD尼龍薄膜等。又,前述前述耐熱性樹脂層2,可由單層形成,亦或,可例如由PET膜/聚醯胺薄膜構成的複數層形成。 The heat-resistant resin layer (outer layer) 2 is not particularly limited, and examples thereof include a polyamide film and a polyester film. It is preferred to use such a stretch film. Among the heat-resistant resin layers 2, a biaxially stretched polyamide film, a biaxially stretched polybutylene terephthalate (PBT) film, and a biaxially oriented polyparaphenylene are used from the viewpoint of formability and strength. Ethylene glycolate (PET) film, or biaxially stretched polyethylene naphthalate (PEN) film is special good. The polyimide film is not particularly limited, and examples thereof include a 6-nylon film, a 6,6 nylon film, and an MXD nylon film. Further, the heat resistant resin layer 2 may be formed of a single layer or may be formed of, for example, a plurality of layers composed of a PET film/polyamide film.

前述耐熱性樹脂層2的厚度,以9μm~50μm為佳。使用聚酯薄膜時,厚度較佳為9μm~50μm,使用聚醯胺薄膜時,較佳厚度為10μm~50μm。藉由設定在上述較佳的下限值以上,可確保包裝材有充分之強度,並且藉由設定在上述較佳的上限值以下,可降低鼓脹成形時或深引伸成形時的應力而提升成形性。 The thickness of the heat resistant resin layer 2 is preferably 9 μm to 50 μm. When a polyester film is used, the thickness is preferably from 9 μm to 50 μm, and when a polyimide film is used, the thickness is preferably from 10 μm to 50 μm. By setting it at or above the above preferred lower limit value, it is possible to ensure sufficient strength of the packaging material, and by setting it below the above preferred upper limit value, it is possible to reduce stress during bulging forming or deep drawing forming. Formability.

(熱可塑性樹脂層) (thermoplastic resin layer)

前述熱可塑性樹脂層(內側層)3,係即使對於使用在鋰離子蓄電池等的腐蝕性高的電解液等,仍具備優異的耐藥品性,並同時擔負賦予包材熱密封性的作用者。 The thermoplastic resin layer (inner layer) 3 is excellent in chemical resistance even when it is used in an electrolyte solution having high corrosiveness such as a lithium ion battery, and is also responsible for imparting heat sealability to the packaging material.

前述熱可塑性樹脂層3,雖無特別限定,但較佳係熱可塑性樹脂未拉伸薄膜層。前述熱可塑性樹脂未拉伸薄膜層3,並無特別限定,以耐藥品性及熱密封性的觀點來看,由選自聚乙烯、聚丙烯、烯烴系共聚物、此等的酸改性物及離子聚合物所成群中至少1種之熱可塑性樹脂所組成的未拉伸薄膜所構成者為佳。 The thermoplastic resin layer 3 is not particularly limited, but is preferably a thermoplastic film unstretched film layer. The thermoplastic resin unstretched film layer 3 is not particularly limited, and is selected from the group consisting of polyethylene, polypropylene, olefin-based copolymers, and the like, from the viewpoint of chemical resistance and heat-sealing properties. It is preferred that the unstretched film composed of at least one of the thermoplastic resins in the group of ionic polymers is formed.

前述熱可塑性樹脂層3的厚度,設定於20μm~80μm為佳。藉由設定在20μm以上,可充分地防止針孔的產生,藉由設定在80μm以下,可降低樹脂用量而達到成本的降低。其中,前述熱可塑性樹脂層3的厚度設定於30μm~50μm為特佳。又,前述熱可塑性樹脂層3,可為單層亦可為複數層。複數層構成之熱可塑性樹脂層3,可例示於嵌段 聚丙烯薄膜的兩面積層無規聚丙烯薄膜而成的三層薄膜等。 The thickness of the thermoplastic resin layer 3 is preferably set to 20 μm to 80 μm. By setting it at 20 μm or more, the occurrence of pinholes can be sufficiently prevented, and by setting it to 80 μm or less, the amount of the resin can be lowered to achieve a cost reduction. Among them, it is particularly preferable that the thickness of the thermoplastic resin layer 3 is set to 30 μm to 50 μm. Further, the thermoplastic resin layer 3 may be a single layer or a plurality of layers. The thermoplastic resin layer 3 composed of a plurality of layers can be exemplified in the block A three-layer film made of a two-area layer of a random polypropylene film of a polypropylene film.

(金屬箔層) (metal foil layer)

前述金屬箔層4,係擔負賦予成形用包裝材1阻止氧或水分侵入之氣體阻障性的作用者。前述金屬箔層4,並無特別限定,可列舉例如,鋁箔、銅箔、不銹鋼箔等,而一般係使用鋁箔。前述金屬箔層4的厚度,以20μm~100μm為佳。當厚度為20μm以上,於製造金屬箔時,可防止壓延時的針孔的產生,同時,當厚度為為100μm以下可降低鼓脹成形時或深引伸成形時的應力而提升成形性。 The metal foil layer 4 is responsible for imparting gas barrier properties to the molding packaging material 1 for preventing oxygen or moisture from entering. The metal foil layer 4 is not particularly limited, and examples thereof include an aluminum foil, a copper foil, and a stainless steel foil. Generally, an aluminum foil is used. The thickness of the metal foil layer 4 is preferably 20 μm to 100 μm. When the thickness is 20 μm or more, the production of the metal foil can prevent the occurrence of the pinholes which are delayed, and at the same time, when the thickness is 100 μm or less, the stress at the time of inflation molding or deep drawing can be lowered to improve the formability.

前述金屬箔層4,至少在內側的面4a(第2接著劑層6側之面)施有化成處理為佳(參照圖1、2)。實施如此之化成處理可充分防止內容物(電池的電解液、食品、醫藥品等)所致之金屬箔表面腐蝕。例如可藉由實施以下所述之處理以進行金屬箔之化成處理。亦即,例如可藉由在進行脫脂處理後之金屬箔的表面,塗布下述1)~3)中任一項後使其乾燥以實施化成處理。 It is preferable that the metal foil layer 4 is subjected to a chemical conversion treatment at least on the inner surface 4a (the surface on the second adhesive layer 6 side) (see FIGS. 1 and 2). By performing such a chemical conversion treatment, it is possible to sufficiently prevent corrosion of the surface of the metal foil caused by the contents (electrolyte of the battery, food, medicine, etc.). For example, the chemical conversion treatment of the metal foil can be performed by performing the treatment described below. In other words, for example, any one of the following 1) to 3) may be applied to the surface of the metal foil after the degreasing treatment, and then dried to carry out a chemical conversion treatment.

1)含有選自磷酸、鉻酸、氟化物的金屬鹽及氟化物的非金屬鹽所成群中至少1種的化合物的混合物之水溶液 1) an aqueous solution containing a mixture of at least one compound selected from the group consisting of a metal salt of phosphoric acid, chromic acid, a fluoride, and a non-metal salt of a fluoride

2)含有磷酸、丙烯酸系樹脂、殼聚醣衍生物樹脂(Chitosan derivative resins)及苯酚系樹脂所成群中至少1種的樹脂,及選自鉻酸及鉻(III)鹽所成群中至少1種的化合物的混合物之水溶液 2) a resin containing at least one of a group consisting of phosphoric acid, an acrylic resin, a chitosan derivative resin, and a phenol resin, and at least one selected from the group consisting of chromic acid and chromium (III) salt An aqueous solution of a mixture of one compound

3)含有選自磷酸、丙烯酸系樹脂、殼聚醣衍生物樹脂、及苯酚系樹脂所成群中至少1種的樹脂、選自鉻酸及鉻(III)鹽所成群中至少1種的化合物、與選自氟化物的金屬鹽及氟化物的非金屬鹽所 成群中至少1種的化合物的混合物之水溶液。 3) a resin containing at least one selected from the group consisting of phosphoric acid, an acrylic resin, a chitosan derivative resin, and a phenol resin, and at least one selected from the group consisting of chromic acid and chromium (III) salt. a compound, a metal salt selected from a fluoride, and a non-metal salt of a fluoride An aqueous solution of a mixture of at least one compound in a population.

(著色油墨層) (colored ink layer)

前述著色油墨層中10,係配置於前述金屬箔層4與前述耐熱性樹脂層2之間之層,在上述實施形態中,係擔負接合前述第1接著劑層5與前述耐熱性樹脂層2的接合作用,並賦予成形用包裝材1之外面側顏色(包含無彩色)之層。 The colored ink layer 10 is a layer disposed between the metal foil layer 4 and the heat resistant resin layer 2, and in the above embodiment, the first adhesive layer 5 and the heat resistant resin layer 2 are bonded. The bonding action is given to the layer on the outer surface side of the forming packaging material 1 (including achromatic color).

前述著色油墨層10,係由著色油墨組成物之硬化膜構成,該著色油墨組成物係包含:作為主劑之聚酯樹脂及作為硬化劑之多官能異氰酸酯化合物所成之二液硬化型聚酯聚氨酯樹脂接著劑(B)、及含有無機顏料之著色顏料(A)。 The colored ink layer 10 is composed of a cured film of a colored ink composition comprising a polyester resin as a main component and a polyfunctional isocyanate compound as a hardener. A urethane resin adhesive (B) and a coloring pigment (A) containing an inorganic pigment.

前述著色顏料(A),係採用至少含有無機顏料之構成。前述著色顏料,除了前述無機顏料外,可列舉例如,偶氮系顏料、酞菁系顏料、縮合多環系顏料等。此外,前述無機顏料,並無特別限制,可列舉例如,碳黑、碳酸鈣、氧化鈦、氧化鋅、氧化鐵、氧化鋁粉等。其中,前述無機顏料係以使用碳黑為佳。前述無機顏料,使用平均粒徑為0.1μm~5μm者為佳。使用平均粒徑為0.5μm~2.5μm者為特佳。分散前述著色顏料時,使用顏料分散機使著色顏料分散為佳。分散前述著色顏料時,亦可使用界面活性劑等之顏料分散劑。 The coloring pigment (A) is a composition containing at least an inorganic pigment. In addition to the inorganic pigment, the coloring pigment may, for example, be an azo pigment, a phthalocyanine pigment, or a condensed polycyclic pigment. Further, the inorganic pigment is not particularly limited, and examples thereof include carbon black, calcium carbonate, titanium oxide, zinc oxide, iron oxide, and aluminum oxide powder. Among them, the above inorganic pigments are preferably carbon black. The inorganic pigment is preferably one having an average particle diameter of from 0.1 μm to 5 μm. It is particularly preferable to use an average particle diameter of 0.5 μm to 2.5 μm. When the coloring pigment described above is dispersed, it is preferred to use a pigment disperser to disperse the coloring pigment. When the coloring pigment is dispersed, a pigment dispersing agent such as a surfactant may be used.

前述著色顏料(A)之50質量%以上由前述無機顏料所構成為佳。此時,可得到更充分之隱蔽金屬箔層4之隱蔽力,而能夠形成可賦予充分之穩重感、高級感之特定色調之著色油墨層10。其中,前述著色顏料(A)之60質量%以上由前述無機顏料所構成為更佳。 It is preferable that 50% by mass or more of the coloring pigment (A) is composed of the above inorganic pigment. At this time, it is possible to obtain a more sufficient concealing force of the concealing metal foil layer 4, and it is possible to form the colored ink layer 10 which can impart a specific feeling of high quality and a high-grade feeling. In particular, 60% by mass or more of the coloring pigment (A) is more preferably composed of the inorganic pigment.

就前述二液硬化型聚酯聚氨酯樹脂接著劑(B)加以說明。前述作為主劑之聚酯樹脂,係以二羧酸及二醇作為原料而成的共聚物,較佳的材料及組成如以下所述。 The two-liquid curing polyester urethane resin adhesive (B) will be described. The polyester resin as the main component is a copolymer obtained by using a dicarboxylic acid and a diol as a raw material, and preferred materials and compositions are as follows.

前述二羧酸,較佳係使用脂肪族二羧酸與芳香族二羧酸兩者。此外,脂肪族二羧酸的伸甲基鏈的伸甲基數的奇偶係影響樹脂的結晶性的因子,由於具有偶數的伸甲基的二羧酸可形成結晶性高的硬樹脂,因此使用具有偶數的伸甲基的脂肪族二羧酸較佳。伸甲基數為偶數的脂肪族二羧酸,係可例如為琥珀酸(伸甲基數2)、己二酸(伸甲基數4)、辛二酸(伸甲基數6)、癸二酸(伸甲基數8)等。前述芳香族二羧酸,係可例如為間苯二甲酸、對苯二甲酸、萘二羧酸、鄰苯二甲酸酐等。 As the dicarboxylic acid, it is preferred to use both an aliphatic dicarboxylic acid and an aromatic dicarboxylic acid. In addition, the parity of the methyl group of the methyl dicarboxylic acid of the aliphatic dicarboxylic acid affects the crystallinity of the resin, and since the dicarboxylic acid having an even number of methyl groups can form a hard resin having high crystallinity, it is used. An aliphatic dicarboxylic acid having an even number of methyl groups is preferred. The aliphatic dicarboxylic acid having an even number of methyl groups may be, for example, succinic acid (methyl group 2), adipic acid (methyl group 4), suberic acid (methyl group 6), hydrazine. Diacid (methyl group 8) and the like. The aromatic dicarboxylic acid may be, for example, isophthalic acid, terephthalic acid, naphthalene dicarboxylic acid or phthalic anhydride.

此外,相對於脂肪族二羧酸和芳香族二羧酸的合計量,其芳香族二羧酸的含有率為40莫爾%~80莫爾%的範圍,換言之,將脂肪族二羧酸的含有率保持為20莫爾%~60莫爾%的範圍,可生成接著強度高且成形性好的樹脂,從而可成形為成形性好且側壁高的外殼,且可形成能充分防止耐熱性樹脂層2由著色油墨層10剝離之成形用包裝材。芳香族二羧酸的含有率未滿40莫爾%時,會降低膜物性而易發生凝集剝離,從而容易發生耐熱性樹脂層2由著色油墨層10剝離,因此較不佳。另一方面,芳香族二羧酸的含有率超過80莫爾%時,有樹脂變硬而密著性能降低的傾向,因此亦較不佳。其中,相對於脂肪族二羧酸和芳香族二羧酸的合計量,芳香族二羧酸的含有率為50莫爾%~70莫爾%之範圍為特佳。 Further, the content of the aromatic dicarboxylic acid in the total amount of the aliphatic dicarboxylic acid and the aromatic dicarboxylic acid is in the range of 40 mol% to 80 mol%, in other words, the aliphatic dicarboxylic acid is used. When the content rate is maintained in the range of 20 mol% to 60 mol%, a resin having high adhesion strength and good moldability can be produced, and the outer casing having good formability and high side wall can be formed, and the heat resistant resin can be sufficiently formed. The layer 2 is formed into a packaging material for forming which is peeled off from the colored ink layer 10. When the content of the aromatic dicarboxylic acid is less than 40% by mole, the physical properties of the film are lowered to cause aggregation and peeling, and the heat-resistant resin layer 2 is likely to be peeled off from the colored ink layer 10, which is not preferable. On the other hand, when the content of the aromatic dicarboxylic acid exceeds 80 mol%, the resin tends to be hard and the adhesion performance tends to be lowered, which is also undesirable. Among them, the content of the aromatic dicarboxylic acid is particularly preferably in the range of 50 mol% to 70 mol% based on the total amount of the aliphatic dicarboxylic acid and the aromatic dicarboxylic acid.

前述二醇,雖無特別限定,但可例如為,乙二醇、丙二醇、 1,3-丁二醇、1,4-丁二醇、二乙二醇、二丙二醇、新戊二醇、1,5-戊二醇、1,6-己二醇、辛二醇、1,4-環己二醇、2-丁基-2-乙基-1,3-丙二醇等。 The diol is not particularly limited, but may be, for example, ethylene glycol or propylene glycol. 1,3-butanediol, 1,4-butanediol, diethylene glycol, dipropylene glycol, neopentyl glycol, 1,5-pentanediol, 1,6-hexanediol, octanediol, 1 , 4-cyclohexanediol, 2-butyl-2-ethyl-1,3-propanediol, and the like.

前述聚酯樹脂(主劑)的分子量,係將數目平均分子量(Mn)設定為8000~25000,將重量平均分子量(Mw)設定為15000~50000,且更進一步使該等的比率(Mw/Mn)為1.3~2.5者。數目平均分子量(Mn)為8000以上、重量平均分子量(Mw)為15000以上時可得適性的塗膜強度與耐熱性,數目平均分子量(Mn)為25000以下、重量平均分子量(Mw)為50000以下時可得不會過硬且適性的塗膜延伸度。此外,此等之比率(Mw/Mn)為1.3~2.5時可形成適性的分子量分布而能保持接著劑塗佈適性(分布廣)與性能(分布狹窄)平衡。前述聚酯樹脂之數目平均分子量(Mn)為10000~23000特佳,特佳之重量平均分子量(Mw)為20000~40000,特佳之(Mw/Mn)為1.5~2.3。 The molecular weight of the polyester resin (main component) is set to a number average molecular weight (Mn) of 8,000 to 25,000, a weight average molecular weight (Mw) of 15,000 to 50,000, and a further ratio (Mw/Mn). ) is 1.3 to 2.5. When the number average molecular weight (Mn) is 8,000 or more and the weight average molecular weight (Mw) is 15000 or more, suitable coating film strength and heat resistance are obtained, and the number average molecular weight (Mn) is 25,000 or less, and the weight average molecular weight (Mw) is 50,000 or less. It is possible to obtain a coating film extension that is not too hard and suitable. Further, when the ratio (Mw/Mn) is 1.3 to 2.5, an appropriate molecular weight distribution can be formed, and the balance between the coating suitability (wide distribution) and the performance (small distribution) can be maintained. The number average molecular weight (Mn) of the polyester resin is preferably 10,000 to 23,000, particularly preferably a weight average molecular weight (Mw) of 20,000 to 40,000, and particularly preferably (Mw/Mn) of 1.5 to 2.3.

前述聚酯樹脂(主劑)的分子量,可藉由多官能性之異氰酸酯進行鏈伸長而調整。亦即,若將主劑中的聚酯成分以NCO連結可生成末端為羥基的聚合物,可藉由調整異氰酸酯基與聚酯的羥基的當量比以調整聚酯樹脂(主劑)的分子量。本發明中,使用以該等的當量比(OH/NCO)為1.01~10之方式連結而成者為佳。又,其他的分子量調整方法,可列舉如調整二羧酸與二醇之共聚合反應的反應條件(調整二羧酸與二醇的摻合莫爾比)。 The molecular weight of the polyester resin (main component) can be adjusted by chain extension of a polyfunctional isocyanate. That is, when the polyester component in the main component is linked by NCO to form a polymer having a terminal hydroxyl group, the molecular weight of the polyester resin (main agent) can be adjusted by adjusting the equivalent ratio of the isocyanate group to the hydroxyl group of the polyester. In the present invention, it is preferred to use a combination of such an equivalent ratio (OH/NCO) of 1.01 to 10. Further, as another method of adjusting the molecular weight, for example, a reaction condition for adjusting a copolymerization reaction of a dicarboxylic acid and a diol (adjusting a molar ratio of a dicarboxylic acid to a diol) can be mentioned.

亦可添加環氧系樹脂或丙烯酸系樹脂作為前述主劑之添加劑(著色油墨組成物之添加劑)。 An epoxy resin or an acrylic resin may be added as an additive of the above-mentioned main component (an additive of a colored ink composition).

又,前述聚酯樹脂(主劑),採用作為較佳構成而列舉的限定構成中之任一種以上時,即使採用著色顏料之50質量%以上為無機顏料所構成之構成,仍可確保著色油墨層具有更充足的密著力的優點。前述聚酯樹脂(主劑)之較佳構成,在可得如此之效果的特點上,係特別重要之技術。 In addition, when the polyester resin (main component) is used in any one or more of the above-described preferred configurations, the coloring ink can be ensured even if 50% by mass or more of the coloring pigment is used as the inorganic pigment. The layer has the advantage of more sufficient adhesion. The preferred constitution of the above polyester resin (main agent) is a particularly important technique in that such an effect can be obtained.

前述作為硬化劑的多官能異氰酸酯化合物,可使用芳香族系、脂肪族系、脂環族系的各種多官能異氰酸酯化合物。作為具體例,可列舉例如為,以脂肪族系的六亞甲基二異氰酸酯(HDI)、異佛爾酮二異氰酸酯(IPDI)、芳香族系的甲苯二異氰酸酯(TDI)、二苯基甲烷二異氰酸酯(MDI)等的二異氰酸酯的1種類或2種類以上做為基底而進行變性而成的多官能異氰酸酯變性體。作為變性手段,除了與水、甘油、三羥甲基丙烷等的多官能活性氫化合物的加成物以外,其他亦可列舉如利用異氰脲酸酯化、碳二醯亞胺化、聚合化等的多量化反應形成之多官能異氰酸酯變性體。可將此等的1種或2種以上混合使用。 As the polyfunctional isocyanate compound as the curing agent, various polyfunctional isocyanate compounds of an aromatic, aliphatic or alicyclic type can be used. Specific examples include aliphatic hexamethylene diisocyanate (HDI), isophorone diisocyanate (IPDI), aromatic toluene diisocyanate (TDI), and diphenylmethane. A polyfunctional isocyanate denatured product obtained by denaturation of one type or two or more types of diisocyanates such as isocyanate (MDI). Examples of the denaturing means include, in addition to an adduct of a polyfunctional active hydrogen compound such as water, glycerin or trimethylolpropane, such as isocyanuration, carboidization, and polymerization. A polyfunctional isocyanate denatured body formed by a multi-quantitative reaction. These may be used in combination of one type or two or more types.

前述作為硬化劑之多官能異氰酸酯化合物,其50莫爾%以上(50莫爾%以上100莫爾%以下)係由芳香族系多官能異氰酸酯化合物所構成。亦即,相對於多官能異氰酸酯化合物的全量100莫爾%,50莫爾%以上係由芳香族系多官能異氰酸酯化合物所構成。50莫爾%以上係由芳香族系多官能異氰酸酯化合物構成時,可增加硬化後之接著強度,故即使在進行更深之成型時,在成形時及密封時,且更進一步在高溫 多濕等的稍微嚴苛的環境下使用時,仍可充分防止耐熱性樹脂層著色層2由著色油墨層10剝離。其中,前述作為硬化劑之多官能異氰酸酯化合物,其70莫爾%以上由芳香族系多官能異氰酸酯化合物構成為佳,更進一步,其80莫爾%以上由芳香族系多官能異氰酸酯化合物構成為特佳。 The polyfunctional isocyanate compound as the curing agent is composed of an aromatic polyfunctional isocyanate compound in an amount of 50 mol% or more (50 mol% or more and 100 mol% or less). That is, 50 mol% or more of the total amount of 100% by mole of the polyfunctional isocyanate compound is composed of an aromatic polyfunctional isocyanate compound. When 50% Moore or more is composed of an aromatic polyfunctional isocyanate compound, the adhesion strength after curing can be increased, so that even when deeper molding is performed, at the time of molding and sealing, and further at a high temperature When used in a slightly harsh environment such as moisture, the heat-resistant resin layer colored layer 2 can be sufficiently prevented from being peeled off from the colored ink layer 10. In particular, the polyfunctional isocyanate compound as the curing agent is preferably 70 mol% or more of an aromatic polyfunctional isocyanate compound, and more preferably 80 mol% or more of an aromatic polyfunctional isocyanate compound. good.

又,前述多官能異氰酸酯化合物(硬化劑),採用被列舉為較佳構成的限定構成中之任一種以上時,即使採用著色顏料之50質量%以上為無機顏料所構成之構成,亦有能確保著色油墨層具有更充足的密著力的優點。前述多官能異氰酸酯化合物(硬化劑)較佳的構成,在可得如此之效果的特點上,係特別重要之技術。 In addition, when the polyfunctional isocyanate compound (curing agent) is one or more of the above-described preferred constituents, it is possible to ensure that even if 50% by mass or more of the coloring pigment is used as the inorganic pigment. The pigmented ink layer has the advantage of more sufficient adhesion. The preferred configuration of the above polyfunctional isocyanate compound (hardener) is a particularly important technique in that such an effect can be obtained.

前述二液硬化型聚酯聚氨酯樹脂接著劑中,主劑與硬化劑的摻合比例,以相對於多元醇羥基(OH)1莫爾異氰酸酯官能基(NCO)為2~25莫爾之比例摻合為佳。此等的莫爾比(NCO)/(OH)若未達2而異氰酸酯官能基(NCO)過少時,將無法充分進行硬化反應而無法得到適性的塗膜強度及耐熱性。另一方面,(NCO)/(OH)若超過25而異氰酸酯官能基(NCO)過多時,與多元醇以外的官能基反應太過,塗膜變得過硬而有無法得到適性的延伸之虞。多元醇羥基與異氰酸酯官能基的莫爾比(NCO)/(OH)為5~20為特佳。 In the above two-liquid-curing polyester urethane resin adhesive, the blending ratio of the main agent and the hardener is blended in a ratio of 2 to 25 moles relative to the polyol hydroxyl (OH) 1 moirocyanate functional group (NCO). It is better. When the molar ratio (NCO)/(OH) of these is less than 2 and the isocyanate functional group (NCO) is too small, the curing reaction cannot be sufficiently performed, and the coating film strength and heat resistance are not obtained. On the other hand, when the (NCO)/(OH) exceeds 25 and the isocyanate functional group (NCO) is too large, the reaction with the functional group other than the polyol is too large, and the coating film becomes too hard to be able to obtain an appropriate extension. It is particularly preferred that the polyol hydroxyl group and the isocyanate functional group have a molar ratio (NCO)/(OH) of 5 to 20.

前述二液硬化型聚酯聚氨酯樹脂接著劑,其反應後的硬化膜具有以下物性為佳。亦即,藉由前述主劑與前述硬化劑反應後之硬化膜之拉伸試驗(JIS K7162)獲得之楊氏模量為70MPa~400MPa為佳。楊氏模量為100MPa~300MPa為特佳。此外,前述硬化膜之斷裂強度為20MPa~70MPa,前述硬化膜之斷裂伸長 率為50%~400%為佳。斷裂強度30MPa~50MPa特佳,斷裂伸長率為100%~300%特佳。更進一步,二液硬化型聚酯聚氨酯樹脂接著劑之硬化膜的拉伸應力-歪斜曲線(S-S曲線)於斷裂前無顯示強度降低為佳。圖3係顯示S-S曲線的3種模式。相對於拉伸應力,模式A歪斜量較小而模式B歪斜量較大,但不論何者都伴隨拉伸應力增加而歪斜量增加,斷裂前亦無顯示強度降低。另一方面,模式C在歪斜量增加的過程,拉伸應力降低,於斷裂前顯示強度降低。本發明中,以二液硬化型接著劑的硬化膜的S-S曲線無強度降低為佳。更理想地,S-S曲線中無強度急遽變化的折點為更佳。 In the two-liquid-curing polyester urethane resin adhesive, the cured film after the reaction has the following physical properties. That is, the Young's modulus obtained by the tensile test (JIS K7162) of the cured film obtained by reacting the above-mentioned main agent with the above-mentioned hardener is preferably 70 MPa to 400 MPa. Young's modulus is particularly good from 100 MPa to 300 MPa. Further, the breaking strength of the cured film is 20 MPa to 70 MPa, and the elongation at break of the cured film The rate is preferably 50% to 400%. The breaking strength is particularly good at 30 MPa to 50 MPa, and the elongation at break is particularly preferably 100% to 300%. Further, the tensile stress-slant curve (S-S curve) of the cured film of the two-liquid-curing polyester urethane resin adhesive agent preferably has no display strength reduction before the fracture. Figure 3 shows three modes of the S-S curve. Compared with the tensile stress, the mode A skew amount is small and the mode B skew amount is large, but the skew amount is increased with the increase of the tensile stress, and the display strength is not decreased before the fracture. On the other hand, in the process in which the amount of skew increases in the mode C, the tensile stress is lowered, and the display strength is lowered before the fracture. In the present invention, it is preferred that the S-S curve of the cured film of the two-liquid curing type adhesive has no strength reduction. More desirably, the vertices of the S-S curve having no sharp change in intensity are more preferable.

含有前述二液硬化型聚酯聚氨酯樹脂之接著劑,係將作為聚酯樹脂的原料的二羧酸及二醇進行縮合,主要係進一步利用多官能性的異氰酸酯將鍊伸長,並將溶劑及聚氨酯化反應催化劑、用以提升接著力的偶聯劑或環氧樹脂、消泡劑、勻染劑、紫外線吸收劑、抗氧化劑等的各種添加劑混合而成流動狀的聚酯樹脂溶液,對此摻合作為硬化劑的多官能異氰酸酯化合物或更進一步摻合溶劑,從而製備成低黏度流體狀物。 The binder containing the two-liquid-curing polyester urethane resin is a condensation product of a dicarboxylic acid and a diol which are raw materials of the polyester resin, and mainly uses a polyfunctional isocyanate to elong the chain, and a solvent and a polyurethane. a reaction catalyst, a coupling agent for improving adhesion, or a polyester resin solution in which a mixture of various additives such as an epoxy resin, an antifoaming agent, a leveling agent, an ultraviolet absorber, an antioxidant, and the like are mixed, and the mixture is mixed. The polyfunctional isocyanate compound which is a hardener is blended or further blended with a solvent to prepare a low viscosity fluid.

前述著色油墨層10中,相對於前述聚酯樹脂(二液硬化型聚酯聚氨酯樹脂接著劑的主劑)與前述著色顏料的合計質量(當然,並不含溶劑),著色顏料較佳的含有質量之比例設定為5質量%~60質量%為佳。在5質量%以上可得到充分的隱蔽金屬箔層4之效果,使金屬光澤無法直接用肉眼辨識,從而賦予充分之穩重感、高級感,同時成形時該成形部中亦不會產生局部的色彩不均。此外,在60質量%以下,著色油墨層10不會變硬變脆,從而可充分確保著色油墨層10對於耐熱性樹脂層2 之接著力,於成形時及密封時,且在高溫多濕等的稍微嚴苛的環境下使用時,亦可充分防止耐熱性樹脂層2由著色油墨層10剝離。其中,前述著色油墨層10中,相對於前述聚酯樹脂與前述著色顏料的合計質量,將著色顏料的含有質量之比例設定為15質量%~60質量%為特佳。 In the colored ink layer 10, the coloring pigment is preferably contained in the total mass of the polyester resin (the main component of the two-liquid curing polyester urethane resin adhesive) and the coloring pigment (of course, without a solvent). The ratio of the mass is preferably set to 5 mass% to 60 mass%. The effect of sufficiently concealing the metal foil layer 4 can be obtained at 5% by mass or more, so that the metallic luster cannot be directly recognized by the naked eye, thereby giving a sufficient sense of stability and high-grade feeling, and at the same time, local color is not generated in the formed portion at the time of molding. Uneven. Further, at 60% by mass or less, the colored ink layer 10 does not become hard and brittle, so that the colored ink layer 10 can be sufficiently ensured for the heat resistant resin layer 2 The adhesive force can sufficiently prevent the heat-resistant resin layer 2 from being peeled off from the colored ink layer 10 when it is used in a slightly harsh environment such as high temperature and high humidity during molding and sealing. In the colored ink layer 10, it is particularly preferable to set the ratio of the content of the coloring pigment to 15% by mass to 60% by mass based on the total mass of the polyester resin and the coloring pigment.

前述著色油墨層(硬化膜)10之厚度,設定在1μm~5μm為佳。 The thickness of the colored ink layer (cured film) 10 is preferably 1 μm to 5 μm.

(第1接著劑層) (first adhesive layer)

前述第1接著劑層5,係擔負接合金屬箔層4與前述耐熱性樹脂層2(上述實施型態為著色油墨層10)之作用的層。前述第1接著劑層5,雖無特別限定,但可列舉例如:藉由2液硬化型接著劑所形成之接著劑層等。前述2液硬化型接著劑,可列舉例如,由選自於由聚氨酯系多元醇、聚酯系多元醇、聚醚系多元醇、及聚酯聚胺酯系多元醇所成群中之多元醇的1種或2種以上所構成之第1液、與由異氰酸酯所構成之第2液(硬化劑)構成之2液硬化型接著劑等。其中,使用由選自於聚酯系多元醇及聚酯聚氨酯系多元醇所成群中之多元醇的1種或2種以上所構成之第1液、與由異氰酸酯所構成之第2液(硬化劑)構成之2液硬化型接著劑為佳。前述第1接著劑層5,例如,可藉由凹版印刷法等方法,將前述2液硬化型接著劑等之接著劑塗佈於前述金屬箔層4之上表面或/及前述耐熱性樹脂層2之下表面(例如著色油墨層10之下表面)而形成。 The first adhesive layer 5 is a layer that functions as the bonding metal foil layer 4 and the heat resistant resin layer 2 (the above-described embodiment is the colored ink layer 10). The first adhesive layer 5 is not particularly limited, and examples thereof include an adhesive layer formed of a two-liquid curing type adhesive. The two-liquid-curing adhesive agent may, for example, be a polyol selected from the group consisting of a polyurethane-based polyol, a polyester-based polyol, a polyether-based polyol, and a polyester polyurethane-based polyol. A liquid-curing type adhesive comprising a first liquid composed of two or more kinds and a second liquid (curing agent) composed of an isocyanate. In addition, a first liquid composed of one or more selected from the group consisting of a polyester-based polyol and a polyester urethane-based polyol, and a second liquid composed of an isocyanate are used ( A two-liquid hardening type adhesive comprising a curing agent is preferred. In the first adhesive layer 5, for example, an adhesive such as the two-liquid curing adhesive can be applied to the upper surface of the metal foil layer 4 or the heat resistant resin layer by a method such as a gravure printing method. 2 is formed on the lower surface (for example, the lower surface of the colored ink layer 10).

前述金屬箔層4與前述耐熱性樹脂層2的貼合方法,雖無特別限制,但較為推薦稱為乾式層壓的方法。具體的說,於金屬箔層4的上表面或耐熱性樹脂層2的下表面(上述實施型態中為著色油墨層10之下 表面),或於此等之二側的面,塗布所調製的第1接著劑,使溶劑蒸發並形成乾燥被膜後,將金屬箔層4與耐熱性樹脂層2貼合。接著,根據第1接著劑的硬化條件使其硬化。藉此,將金屬箔層4與耐熱性樹脂層2隔著第1接著劑層5接合。又,第1接著劑的塗佈方法,可例示如凹版塗佈法、逆輥塗佈法、唇輥塗法等。 The method of bonding the metal foil layer 4 and the heat resistant resin layer 2 is not particularly limited, but is preferably referred to as a dry lamination method. Specifically, it is on the upper surface of the metal foil layer 4 or the lower surface of the heat resistant resin layer 2 (below the colored ink layer 10 in the above embodiment) On the surface of the surface, or the surface on the other side, the prepared first adhesive is applied, and the solvent is evaporated to form a dried film, and then the metal foil layer 4 and the heat-resistant resin layer 2 are bonded together. Next, it hardens according to the hardening conditions of a 1st adhesive agent. Thereby, the metal foil layer 4 and the heat resistant resin layer 2 are joined via the first adhesive layer 5 . Further, examples of the method of applying the first adhesive include a gravure coating method, a reverse roll coating method, and a lip roll coating method.

(第2接著劑層) (2nd adhesive layer)

前述第2接著劑層6,雖無特別限定,但可列舉為例如,由聚氨酯系接著劑、丙烯酸系接著劑、環氧系接著劑、聚烯烴系接著劑、彈性體系接著劑、氟系接著劑、酸變性聚丙烯接著劑等所形成的接著劑層。其中,使用丙烯酸系接著劑、聚烯烴系接著劑為佳,此時,可提升成形用包裝材1的耐電解液性及水蒸氣阻障性。 The second adhesive layer 6 is not particularly limited, and examples thereof include a urethane-based adhesive, an acrylic adhesive, an epoxy-based adhesive, a polyolefin-based adhesive, an elastic system adhesive, and a fluorine-based adhesive. An adhesive layer formed by a solvent, an acid-denatured polypropylene adhesive, or the like. Among them, an acrylic adhesive or a polyolefin-based adhesive is preferably used. In this case, the electrolytic solution resistance and the water vapor barrier property of the packaging material for molding 1 can be improved.

前述金屬箔層4與前述熱可塑性樹脂層3的貼合方法,雖無特別限定,但例如可如同上述金屬箔層4與耐熱性樹脂層2的貼合,塗佈第2接著劑並乾燥後,將金屬箔層4與熱可塑性樹脂層3貼合的乾式層壓法。 The bonding method of the metal foil layer 4 and the thermoplastic resin layer 3 is not particularly limited, but, for example, the bonding of the metal foil layer 4 and the heat-resistant resin layer 2 can be applied, and the second adhesive can be applied and dried. A dry lamination method in which the metal foil layer 4 and the thermoplastic resin layer 3 are bonded together.

本發明的成形用包裝材1,並不限定為如圖1所示的積層構造,亦可追加更多層使包裝材的機能提升。圖2所示的成形用包裝材1,係在圖1所示構成之包裝材中,更於耐熱性樹脂層2的外面形成有馬特塗層20者。 The packaging material for molding 1 of the present invention is not limited to the laminated structure shown in Fig. 1, and more layers may be added to improve the function of the packaging material. The packaging material 1 for molding shown in Fig. 2 is formed of a packaging material of the structure shown in Fig. 1 and a Marten coating 20 is formed on the outer surface of the heat-resistant resin layer 2.

(馬特塗層) (Matt coating)

前述馬特塗層20,係賦予成形用包裝材1的表面良好的滑動性,從而提高成形性所設置之表面層。 The matt coating layer 20 imparts good slidability to the surface of the packaging material for molding 1 and improves the surface layer provided for moldability.

前述馬特塗層20,係於耐熱性樹脂成分中分散含有無機微粒子的樹脂組成物所成的馬特塗層。其中,前述馬特塗層20,宜為由在二液硬化型之耐熱性樹脂中含有0.1質量%~1質量%之平均粒徑1μm~10μm之無機微粒子而成之樹脂組成物組成之構成。前述耐熱性樹脂,可列舉例如,丙烯酸系樹脂、環氧系樹脂、聚酯系樹脂、聚氨酯系樹脂、聚烯烴系樹脂、氟系樹脂、苯氧系樹脂等,而就耐熱性、耐藥品性的觀點,使用四氟乙烯或氟乙烯乙烯基醚(fluoroethylenevinylether)作為基底的氟系樹脂為佳。前述無機微粒子,雖無特別限定,但可列舉例如,二氧化矽、礬土、氧化鈣、碳酸鈣、硫酸鈣、矽酸鈣等,其中使用二氧化矽為佳。 The matt coating layer 20 is a Matt coating layer obtained by dispersing a resin composition containing inorganic fine particles in a heat resistant resin component. In addition, it is preferable that the matte coating layer 20 is composed of a resin composition containing 0.1% by mass to 1% by mass of inorganic fine particles having an average particle diameter of 1 μm to 10 μm in the heat-resistant resin of the two-liquid curing type. Composition. Examples of the heat-resistant resin include an acrylic resin, an epoxy resin, a polyester resin, a urethane resin, a polyolefin resin, a fluorine resin, and a phenoxy resin, and heat resistance and chemical resistance. From the viewpoint, a fluorine-based resin using tetrafluoroethylene or fluoroethylene vinylether as a substrate is preferred. The inorganic fine particles are not particularly limited, and examples thereof include cerium oxide, alumina, calcium oxide, calcium carbonate, calcium sulfate, calcium citrate, and the like. Among them, cerium oxide is preferably used.

前述馬特塗層20的形成,可藉由將含有上述無機微粒子與耐熱性樹脂的馬特塗層組成物塗佈於前述耐熱性樹脂層2的表面並使其硬化以實施。 The formation of the matte coating layer 20 can be carried out by applying a Matt coating composition containing the above inorganic fine particles and a heat resistant resin to the surface of the heat resistant resin layer 2 and curing it.

前述馬特塗層20的厚度(硬化後的厚度)係0.5~5μm為佳。設定為前述較佳下限值以上可充分得到提高滑動性的效果,同時設定為前述較佳上限值以下可抑制成本。其中,前述馬特塗層20的厚度(硬化後的厚度),特佳係1~3μm。 The thickness (thickness after hardening) of the aforementioned Matt coating 20 is preferably 0.5 to 5 μm. The effect of improving the slidability can be sufficiently obtained by setting it to the above-described preferable lower limit value, and the cost can be suppressed by setting it to the above-described preferable upper limit value. The thickness of the matte coating 20 (thickness after hardening) is particularly preferably 1 to 3 μm.

前述馬特塗層20的表面的總值(gloss value),基於JIS Z8741之60°反射角測定值,設定為1%~15%為佳。前述總值(gloss value),係利用BYK社製的gloss測定器「micro-TRI-gloss-s」於60°反射角測定而得之值。 The gloss value of the surface of the matte coating 20 is preferably 1% to 15% based on the measured value of the 60° reflection angle of JIS Z8741. The gloss value is a value measured by a 60° reflection angle using a gloss meter "micro-TRI-gloss-s" manufactured by BYK Corporation.

又,形成前述馬特塗層20的步驟之實施時期(實施順序)雖無特別限定,但接續在將耐熱性樹脂層2貼合於金屬箔層4(隔著第1 接著劑層5、著色油墨層10)的步驟後進行為佳。 Moreover, although the implementation stage (the execution order) of the step of forming the above-described matte coating layer 20 is not particularly limited, the heat resistant resin layer 2 is bonded to the metal foil layer 4 (the first step is interposed) It is preferable to carry out the step of the layer 5 and the colored ink layer 10).

上述實施型態中,雖採用在耐熱性樹脂層2之上表面積層有馬特塗層20的構成,但此馬特塗層20並非必須之構成層,亦可如圖1所示,採用不具有馬特塗層20之構成。 In the above embodiment, the Matt coating layer 20 is formed on the surface layer of the heat-resistant resin layer 2, but the Matt coating layer 20 is not necessarily a constituent layer, and may be used as shown in FIG. The composition of the Matt Coating 20.

此外,上述實施型態中,雖採用設置有第1接著劑層5與第2接著劑層6之構成,但此兩層5、6皆並非必須之構成層,亦可採用不設置此等之構成。 Further, in the above embodiment, the first adhesive layer 5 and the second adhesive layer 6 are provided. However, the two layers 5 and 6 are not essential constituent layers, and may be omitted. Composition.

本發明之成形用包裝材1,並不限於以包含各層之貼合方法的上述例示之製造方法製造者,以其他製造方法製造者亦為本發明所包含。 The packaging material for molding 1 of the present invention is not limited to the above-described manufacturing method including the bonding method of each layer, and the manufacturer of other manufacturing methods is also included in the present invention.

可藉由將本發明之成形用包裝材1進行成形(深引伸成形、鼓脹成形等)以得到成形外殼(電池外殼等)。 The molded packaging material 1 of the present invention can be molded (deep-stretching, bulging molding, etc.) to obtain a molded outer casing (battery casing or the like).

此外,本發明之成形用包裝材1,雖然可適宜地作為鋰離子蓄電池外殼用包材使用,但並不特別限定為此用途。 Further, the packaging material for molding 1 of the present invention can be suitably used as a packaging material for a lithium ion battery case, but is not particularly limited to such use.

【實施例】[Examples]

接著,說明本發明的具體的實施例,但本發明並不特別限定於該等實施例。 Next, specific examples of the invention will be described, but the invention is not particularly limited to the examples.

<實施例1> <Example 1>

在厚度35μm的鋁箔(A8079鋁箔)4之兩面,塗佈由聚丙烯酸、三價鉻化合物、水、醇類所成的化成處理液,並在150℃進行乾燥,藉此製造在兩面形成有化成皮膜的鋁箔。此化成皮膜的鉻附著量,單面為為5mg/m2On both sides of an aluminum foil (A8079 aluminum foil) 4 having a thickness of 35 μm, a chemical conversion treatment liquid composed of polyacrylic acid, a trivalent chromium compound, water, and an alcohol was applied, and dried at 150 ° C to thereby form a formation on both sides. Aluminum foil for the film. The chromium adhesion amount of the chemical conversion film was 5 mg/m 2 on one side.

製得作為二液硬化型聚酯聚氨酯樹脂接著劑之主劑的聚酯樹脂(聚酯多元醇)。將新戊二醇30莫爾份、乙二醇30莫爾份、1,6-己二醇40莫爾份於80℃熔融後,一邊攪拌一邊將由脂肪族二羧酸的己二酸30莫爾份及芳香族二羧酸之間苯二甲酸70莫爾份構成之二羧酸混合物於210℃進行20小時之縮合反應,從而得到作為主劑的聚酯多元醇(聚酯樹脂)。此聚酯多元醇,數目平均分子量(Mn)為12000、重量平均分子量(Mw)為20500,此等的比率(Mw/Mn)為1.71。更進一步,對於前述獲得之聚酯多元醇40質量份加入乙酸乙酯60質量份,得到流動狀的聚酯多元醇樹脂溶液。此聚酯多元醇樹脂溶液中聚酯多元醇的羥值為2.2mgKOH/g(溶液值)。 A polyester resin (polyester polyol) as a main component of a two-part curable polyester urethane resin adhesive was obtained. 30 parts of neopentyl glycol, 50 parts of ethylene glycol, and 40 parts of 1,6-hexanediol were melted at 80 ° C, and then adipic acid 30 mol of aliphatic dicarboxylic acid was stirred. A dicarboxylic acid mixture composed of 70 parts by mole of phthalic acid and an aromatic dicarboxylic acid was subjected to a condensation reaction at 210 ° C for 20 hours to obtain a polyester polyol (polyester resin) as a main component. This polyester polyol had a number average molecular weight (Mn) of 12,000 and a weight average molecular weight (Mw) of 20,500, and the ratio (Mw/Mn) was 1.71. Furthermore, 60 parts by mass of ethyl acetate was added to 40 parts by mass of the polyester polyol obtained above to obtain a fluid polyester polyol resin solution. The polyester polyol of this polyester polyol resin solution had a hydroxyl value of 2.2 mgKOH/g (solution value).

接著,將平均粒徑1.0μm的碳黑13.3質量份、上述的聚酯多元醇樹脂溶液100質量份(聚酯多元醇40質量份)、與乙酸乙酯64.4質量份混合後,使用顏料分散機將碳黑顏料分散,藉此得到主劑油墨組成物。前述主劑油墨組成物中固體成分(聚酯多元醇及碳黑)之含有率為30質量%,固體成分中之著色顏料(碳黑)之含有率為25質量%。 Next, 13.3 parts by mass of carbon black having an average particle diameter of 1.0 μm, 100 parts by mass of the above polyester polyol resin solution (40 parts by mass of polyester polyol), and 64.4 parts by mass of ethyl acetate were mixed. The carbon black pigment was dispersed using a pigment disperser, whereby a main component ink composition was obtained. The content of the solid component (polyester polyol and carbon black) in the main ink composition was 30% by mass, and the content of the color pigment (carbon black) in the solid content was 25% by mass.

相對於前述主劑油墨組成物100質量份,摻合作為硬化劑之甲苯二異氰酸酯(TDI)與三羥甲基丙烷所成的加合物(NCO%13.0%、固體成分75%;芳香族系多官能異氰酸酯化合物)7.1質量份,再摻合乙酸乙酯34.1質量份並予以攪拌,藉此得到著色油墨組成物。 An adduct of toluene diisocyanate (TDI) and trimethylolpropane blended as a hardener (NCO% 13.0%, solid content 75%; aromatic) with respect to 100 parts by mass of the above-mentioned main-agent ink composition The compound polyfunctional isocyanate compound (7.1 parts by mass) was further blended with 34.1 parts by mass of ethyl acetate and stirred to obtain a colored ink composition.

前述著色油墨組成物中,異氰酸酯官能基(NCO)與聚酯 多元醇羥基(OH)的莫爾比(NCO)/(OH)為10。 Isocyanate functional group (NCO) and polyester in the aforementioned pigmented ink composition The polyol hydroxyl group (OH) has a molar ratio (NCO) / (OH) of 10.

接著,於厚度15μm之二軸延伸尼龍薄膜(耐熱性樹脂層)2之一側的面上,塗布前述著色油墨組成物並將其乾燥,藉此形成著色油墨層10。此著色油墨層10乾燥後的厚度為3μm。 Next, the colored ink composition was applied onto one surface of the biaxially stretched nylon film (heat resistant resin layer) 2 having a thickness of 15 μm and dried to form a colored ink layer 10. The thickness of this colored ink layer 10 after drying was 3 μm.

接著,在前述於兩面形成有化成皮膜的鋁箔4的一側的面上,塗布二液硬化型聚酯聚氨酯樹脂接著劑並予以乾燥而形成第1接著劑層5,於該第1接著劑層5之表面貼合前述二軸延伸尼龍薄膜2之著色油墨層10側,並在鋁箔4的另一側的面上塗布聚丙烯酸接著劑並予以乾燥而形成第2接著劑層6,於第2接著劑層6之表面貼合厚度30μm之未延伸聚丙烯薄膜(熱可塑性樹脂層)3。將此積層體在40℃環境下放置5天,藉此得到圖1所示構成之成形用包裝材1。 Next, a two-liquid-curable polyester urethane resin adhesive is applied onto the surface of the aluminum foil 4 on which the film formation is formed on both surfaces, and dried to form a first adhesive layer 5 on the first adhesive layer. The surface of 5 is bonded to the colored ink layer 10 side of the above-mentioned biaxially stretched nylon film 2, and a polyacrylic acid adhesive is applied to the other surface of the aluminum foil 4 and dried to form a second adhesive layer 6, which is 2nd. Next, the surface of the agent layer 6 was bonded to an unstretched polypropylene film (thermoplastic resin layer) 3 having a thickness of 30 μm. This laminate was allowed to stand in an environment of 40 ° C for 5 days to obtain a packaging material 1 for molding having the structure shown in Fig. 1 .

<實施例2> <Example 2>

使用與實施例1相同之起始材料,並將二醇成分全量相對於二羧酸全量的摻合莫爾比調整成較實施例1為多,藉此獲得數目平均分子量(Mn)為8900、重量平均分子量(Mw)為15000、此等比率Mw/Mn為1.69之聚酯多元醇。 The same starting material as in Example 1 was used, and the blending molar amount of the total amount of the diol component relative to the total amount of the dicarboxylic acid was adjusted to be larger than that of Example 1, whereby the number average molecular weight (Mn) was 8,900. A polyester polyol having a weight average molecular weight (Mw) of 15,000 and such a ratio Mw/Mn of 1.69.

以上述之聚酯多元醇替代實施例1之聚酯多元醇,並摻合作為硬化劑之甲苯二異氰酸酯(TDI)與三羥甲基丙烷的加合物(NCO%13.0%、固體成分75%;芳香族系多官能異氰酸酯化合物)4.8質量份,使著色油墨組成物中,硬化劑之異氰酸酯官能基(NCO)與聚酯多元醇羥基(OH)的莫爾比(NCO/OH)為5。除此之外,皆與實施例1相同,得到圖1所示之成形用包裝材1。 The above polyester polyol was used in place of the polyester polyol of Example 1, and the adduct of toluene diisocyanate (TDI) and trimethylolpropane (NCO% 13.0%, solid content) was added as a hardener. 75%; aromatic polyfunctional isocyanate compound) 4.8 parts by mass, in the colored ink composition, the isocyanate functional group (NCO) of the hardener and the molar ratio of the polyester polyol hydroxyl group (OH) (NCO/OH ) is 5. In the same manner as in Example 1, except that the packaging material 1 for molding shown in Fig. 1 was obtained.

<實施例3> <Example 3>

將實施例1的硬化劑的二異氰酸酯成分,變更成係芳香族的甲苯二異氰酸酯(TDI)70莫爾%與脂肪族異氰酸酯化合物的六亞甲基二異氰酸酯(HDI)30莫爾%所成之混合異氰酸酯和三羥甲基丙烷反應而得之加合物的多官能異氰酸酯化合物(NCO%13.0%、固形分75%),除此之外,皆與實施例1相同,得到圖1所示之成形用包裝材1。 The diisocyanate component of the curing agent of Example 1 was changed to an aromatic toluene diisocyanate (TDI) 70 mol% and an aliphatic isocyanate compound of hexamethylene diisocyanate (HDI) 30 mol%. The polyisocyanate compound (NCO% 13.0%, solid fraction: 75%) of the adduct obtained by mixing the isocyanate and trimethylolpropane was the same as in Example 1, and the obtained Fig. 1 was obtained. The packaging material 1 for molding is shown.

<實施例4> <Example 4>

將平均粒徑1.0μm之碳黑4.4質量份、聚酯多元醇樹脂溶液100質量份、乙酸乙酯43.6質量份混合以替代實施例1的將平均粒徑1.0μm之碳黑13.3質量份、聚酯多元醇樹脂溶液100質量份、乙酸乙酯64.4質量份混合之方式,藉此將相對於聚酯樹脂與碳黑之合計質量之碳黑之含有比例設定為10質量%,除此之外,皆與實施例1相同,得到圖1所示之成形用包裝材1。 4.4 parts by mass of carbon black having an average particle diameter of 1.0 μm, 100 parts by mass of a polyester polyol resin solution, and 43.6 parts by mass of ethyl acetate were mixed in place of carbon of an average particle diameter of 1.0 μm of Example 1. The ratio of the content of carbon black to the total mass of the polyester resin and the carbon black is set by mixing 13.3 parts by mass of black, 100 parts by mass of the polyester polyol resin solution, and 64.4 parts by mass of ethyl acetate. In the same manner as in Example 1, except that the amount was 10% by mass, the packaging material for molding 1 shown in Fig. 1 was obtained.

<實施例5> <Example 5>

不採用實施例1中相對於主劑油墨組成物100質量份摻合作為硬化劑之甲苯二異氰酸酯(TDI)與三羥甲基丙烷所成的加合物(NCO%13.0%、固體成分75%;芳香族系多官能異氰酸酯化合物)7.1質量份,再摻合乙酸乙酯34.1質量份而得到著色油墨組成物之方式,而改採相對於主劑油墨組成物100質量份摻合作為硬化劑之甲苯二異氰酸酯(TDI)與三羥甲基丙烷所成的加合物(NCO%13.0%、固體成分75%;芳香族系多官能異氰酸酯化合物)3.6質量份, 再摻合乙酸乙酯31質量份而得到著色油墨組成物之方式,藉此使硬化劑之異氰酸酯官能基(NCO)與聚酯多元醇羥基(OH)的莫爾比(NCO/OH)為5,除此之外,皆與實施例1相同,得到圖1所示之成形用包裝材1。 An adduct (NCO% 13.0%, solid content) of toluene diisocyanate (TDI) and trimethylolpropane blended as a hardener with respect to 100 parts by mass of the main component ink composition in Example 1 was not used. 7.1 parts by mass of 75% by mass of an aromatic polyfunctional isocyanate compound, and 34.1 parts by mass of ethyl acetate were blended to obtain a colored ink composition, and 100 parts by mass of the ink composition of the main component was changed. An adduct (NCO% 13.0%, solid content 75%; aromatic polyfunctional isocyanate compound) of 3.6 parts by mass of toluene diisocyanate (TDI) and trimethylolpropane blended as a hardener , Further blending 31 parts by mass of ethyl acetate to obtain a colored ink composition, whereby the molar ratio (NCO/OH) of the isocyanate functional group (NCO) of the hardener to the hydroxyl group (OH) of the polyester polyol was 5 In the same manner as in Example 1, except that the packaging material 1 for molding shown in Fig. 1 was obtained.

<實施例6> <Example 6>

將氟乙烯乙烯基酯(耐熱性樹脂)80質量份、硫酸鋇(無機微粒子)10質量份、粉狀二氧化矽(無機微粒子)10質量份混合而製得馬特塗層組成物。接續在實施例1之二軸延伸尼龍薄膜(耐熱性樹脂層)2的貼合步驟後,將此馬特塗層組成物,塗佈於二軸延伸尼龍薄膜(耐熱性樹脂層)2之表面,形成乾燥後之厚度為2μm之馬特塗層20,除此之外,皆與實施例1相同,得到圖2所示構成之成形用包裝材1。 80 parts by mass of fluoroethylene vinyl ester (heat resistant resin), 10 parts by mass of barium sulfate (inorganic fine particles), and 10 parts by mass of powdered ceria (inorganic fine particles) were mixed to obtain a Matt coating composition. After the bonding step of the biaxially stretched nylon film (heat resistant resin layer) 2 of Example 1, the Matt coating composition was applied to the surface of the biaxially stretched nylon film (heat resistant resin layer) 2 In the same manner as in Example 1, except that the Matt coating layer 20 having a thickness of 2 μm after drying was formed, the packaging material for molding 1 having the structure shown in Fig. 2 was obtained.

針對前述馬特塗層20之表面,以BYK社製的總值(gloss value)測定器「micro-TRI-gloss-s」於60°反射角測定光澤度,結果馬特塗層20之表面的總值(基於JIS Z8741之60°反射角測定值)為1.9%。 For the surface of the aforementioned Matter Coating 20, the gloss was measured at a 60° reflection angle by a gloss value measuring device "micro-TRI-gloss-s" manufactured by BYK, and the surface of the Matt Coating 20 was The total value (based on the 60° reflection angle measurement value of JIS Z8741) was 1.9%.

<比較例1> <Comparative Example 1>

使用與實施例1相同的起始材料,並改變反應條件(將二醇成分全量相對於二羧酸全量之摻合莫爾比調整為較實施例1多),藉此獲得數目平均分子量(Mn)為6700、重量平均分子量(Mw)為8400、此等之比率(Mw/Mn)為1.25之聚酯多元醇。 The same starting materials as in Example 1 were used, and the reaction conditions were changed (the total amount of the diol component was adjusted to be more than the blending molar ratio of the total amount of the dicarboxylic acid to be more than Example 1), whereby the number average molecular weight (Mn) was obtained. ) is a polyester polyol having 6700, a weight average molecular weight (Mw) of 8400, and a ratio (Mw/Mn) of 1.25.

以上述之聚酯多元醇替代實施例1之聚酯多元醇,除此之外,皆與實施例1相同,得到成形用包裝材。又,著色油墨組成物中,異 氰酸酯官能基(NCO)與聚酯多元醇羥基(OH)的莫爾比(NCO/OH)為4。 A packaging material for molding was obtained in the same manner as in Example 1 except that the above-mentioned polyester polyol was used instead of the polyester polyol of Example 1. Also, in the colored ink composition, The molar ratio (NCO/OH) of the cyanate ester functional group (NCO) to the polyester polyol hydroxyl group (OH) is 4.

<比較例2> <Comparative Example 2>

不使用實施例1之甲苯二異氰酸酯(TDI)與三羥甲基丙烷所成的加合物(NCO%13.0%、固體成分75質量%;芳香族系多官能異氰酸酯化合物)7.1質量份,而改用由甲苯二異氰酸酯(TDI)30莫爾%與六亞甲基二異氰酸酯(HDI)70莫爾%構成之混合異氰酸酯和三羥甲基丙烷反應而得之加合物(NCO%13.0%、固體成分75%;多官能異氰酸酯化合物)7.1質量份作為硬化劑,除此之外,皆與實施例1相同,得到成形用包裝材。 An adduct of toluene diisocyanate (TDI) of Example 1 and trimethylolpropane (NCO% 13.0%, solid content: 75 mass%; aromatic polyfunctional isocyanate compound) 7.1 mass was not used. And using an adduct obtained by reacting mixed isocyanate composed of toluene diisocyanate (TDI) 30 mol% with hexamethylene diisocyanate (HDI) 70 mol% and trimethylolpropane (NCO%) A packaging material for molding was obtained in the same manner as in Example 1 except that 7.1 parts by mass of a polyfunctional isocyanate compound and 7.1 parts by mass were used as a curing agent.

<比較例3> <Comparative Example 3>

不使用實施例2之甲苯二異氰酸酯(TDI)與三羥甲基丙烷所成的加合物(NCO%13.0%、固體成分75質量%;芳香族系多官能異氰酸酯化合物)4.8質量份,而改用由甲苯二異氰酸酯(TDI)30莫爾%與六亞甲基二異氰酸酯(HDI)70莫爾%構成之混合異氰酸酯和三羥甲基丙烷反應而得之加合物(NCO%13.0%、固體成分75%;多官能異氰酸酯化合物)4.8質量份作為硬化劑,除此之外,皆與實施例2相同,得到成形用包裝材。 The adduct of toluene diisocyanate (TDI) of Example 2 and trimethylolpropane (NCO% 13.0%, solid content: 75 mass%; aromatic polyfunctional isocyanate compound) 4.8 mass was not used. And using an adduct obtained by reacting mixed isocyanate composed of toluene diisocyanate (TDI) 30 mol% with hexamethylene diisocyanate (HDI) 70 mol% and trimethylolpropane (NCO%) A packaging material for molding was obtained in the same manner as in Example 2 except that 4.8 parts by mass of a polyfunctional isocyanate compound and 4.8 parts by mass of a polyfunctional isocyanate compound were used as a curing agent.

針對上述所得的各成形用包裝材,以下述評估法作為基準進行性能評估。其等之結果如表1所示。 The performance of each of the molding packaging materials obtained above was evaluated based on the following evaluation method. The results of these are shown in Table 1.

<成形品的外觀(有無色彩不均)的評估法> <Evaluation method of appearance of molded article (with or without color unevenness)>

對各實施例、各比較例的每個例子,分別製作30個成形用包裝材,以肉眼確認此些中耐熱性樹脂層2並未由鋁箔4剝離後,使用衝頭及模頭等,以使內側的熱可塑性樹脂層3與衝頭接觸的型態,進行深引伸成形而形成縱50mm×橫35mm×深5.5mm之直方體形狀,製作出周圍具有輪緣部的成形用外殼。 For each of the examples and the respective comparative examples, 30 molding packaging materials were produced, and it was visually confirmed that the heat-resistant resin layer 2 was not peeled off from the aluminum foil 4, and then a punch, a die, or the like was used. The shape in which the inner thermoplastic resin layer 3 was brought into contact with the punch was subjected to deep drawing molding to form a rectangular parallelepiped shape of 50 mm in length × 35 mm in width × 5.5 mm in depth, and a molding case having a rim portion around the periphery was produced.

從耐熱性樹脂層側目測觀察已製成的成形用外殼的外觀,並根據下列判定基準評估於成形處等有無色彩不均。 The appearance of the formed outer casing was visually observed from the side of the heat-resistant resin layer, and the presence or absence of color unevenness at the molding site or the like was evaluated based on the following criteria.

「○」...30個成形品皆無色彩不均 "○"...30 molded products have no color unevenness

「△」...有少量色彩不均之成形品存在 "△"...There is a small amount of molded products with uneven color

「×」...有明顯色彩不均之成形品存在 "X"...There is a molded product with obvious uneven color

<剝離有無的評估法> <Evaluation method of peeling presence>

對各實施例及各比較例的每個例子,分別製造30個成形用包裝材,並對此等包裝材在下列a)、b)、c)的3個狀態下以肉眼觀察耐熱性樹脂層有無剝離,並根據下列判定基準來評估。 For each of the examples and the comparative examples, 30 molding packaging materials were separately produced, and the heat-resistant resin layers were visually observed in the following three conditions of a), b), and c). There was no peeling and it was evaluated according to the following criteria.

(判定基準) (judgment basis)

「◎」...耐熱性樹脂層從鋁箔剝離者,於30個中為0個 "◎"...The heat-resistant resin layer is peeled from the aluminum foil, and it is 0 out of 30.

「○」...耐熱性樹脂層從鋁箔剝離者,於30個中有1個或2個 "○"...The heat-resistant resin layer is peeled from the aluminum foil, and there are one or two of the 30

「△」...耐熱性樹脂層從鋁箔剝離者,於30個中有3個~5個 "△"...The heat-resistant resin layer is peeled off from the aluminum foil, and there are 3 to 5 out of 30

「×」...耐熱性樹脂層從鋁箔剝離者,於30個中有6個~30個。 "X"... The heat-resistant resin layer is peeled from the aluminum foil, and there are 6 to 30 in 30.

a)深引伸成形後不久的成形用包裝材。(亦即進行上述成形品外觀評估後之成形外殼) a) Forming packaging materials shortly after deep drawing. (that is, the formed outer casing after the appearance evaluation of the above-mentioned molded article)

b)準備與上述a)的成形外殼相同構成的成形前的平面之成形用包裝材(以下,稱為「蓋材」)。另一方面,由上述a)的成形外殼僅選出耐熱性樹脂層未剝離者,將此無剝離的成形外殼的輪緣部與上述蓋材(的邊緣部)重合,以200℃×0.3MPa×6秒的條件進行熱封,此熱封後不久的成形用包裝材。 b) A flat packaging material for molding (hereinafter referred to as "cover material") before molding, which has the same configuration as that of the molded outer casing of the above a). On the other hand, in the molded case of the above a), only the heat-resistant resin layer is not peeled off, and the rim portion of the peel-free molded case is overlapped with the edge portion of the cover member at 200 ° C × 0.3 MPa. ×6 seconds of heat sealing, the packaging material for forming shortly after heat sealing.

c)由上述a)的成形外殼僅選出耐熱性樹脂層未剝離者,將此無剝離的成形外殼,放入60℃×95%RH的高溫高濕試驗機中持續72小時後,取出並於常溫下放置5日後的成形用包裝材。 c) Only the heat-resistant resin layer is not peeled off from the molded case of the above a), and the peeled molded case is placed in a high-temperature and high-humidity tester at 60 ° C × 95% RH for 72 hours, and then taken out and The packaging material for molding after leaving for 5 days at normal temperature.

<硬化膜的物性評估> <Physical property evaluation of hardened film>

製作出實施例1~6、比較例1~3所使用的二液硬化型聚酯聚氨酯樹脂接著劑的硬化膜(亦即,由各著色油墨組成物中除去作為著色劑的碳黑後之組成的組成物之硬化膜;換言之,主劑與硬化劑反應而成之硬化膜),並評估此硬化膜之物性。 The cured film of the two-component curable polyester urethane resin adhesive used in Examples 1 to 6 and Comparative Examples 1 to 3 was produced (that is, the composition of the carbon black as a colorant was removed from each of the colored ink compositions) The cured film of the composition; in other words, the cured film obtained by reacting the main agent with the hardener), and the physical properties of the cured film are evaluated.

亦即,在非接著性的未處理PP薄膜上,塗佈二液硬化型聚酯聚氨酯樹脂接著劑,使乾燥後的厚度成為50μm,使溶劑乾燥後,於60℃進行老化使其硬化至殘存的異氰酸酯為5%以下為止而形成硬化膜。從未處理PP薄膜剝離硬化膜後,將該硬化膜裁切成寬15mm、長100mm之長尺材並以此作為試驗片。 That is, a two-liquid-curing polyester urethane resin adhesive is applied to a non-adhesive untreated PP film to have a thickness of 50 μm after drying, and the solvent is dried, and then aged at 60° C. to be hardened to remain. The isocyanate is formed to have a cured film of 5% or less. After the PP film peeling cured film was not treated, the cured film was cut into a long material having a width of 15 mm and a length of 100 mm and used as a test piece.

對於製作的試驗片,在標點距離50mm、拉伸速度200mm/min的條件下,依據JIS K7162進行拉伸試驗,測定楊氏模量、斷裂強度及斷裂伸長率。此外,求取此拉伸試驗的S-S曲線,實施例1~6為圖3所示的模式A,比較例1~3為圖3所示的模式B。 The test piece produced was subjected to a tensile test in accordance with JIS K7162 under the conditions of a punctuation distance of 50 mm and a tensile speed of 200 mm/min, and the Young's modulus, breaking strength and elongation at break were measured. Further, the S-S curve of the tensile test was obtained, and Examples 1 to 6 were Mode A shown in FIG. 3, and Comparative Examples 1 to 3 were Mode B shown in FIG.

由表1可明確得知,本發明的實施例1~6的成形用包裝材,於成形時及熱封時,其耐熱性樹脂層不會剝離,即使於高溫多濕的環境下使用時耐熱性樹脂層也幾乎不剝離。 As is clear from Table 1, in the packaging materials for molding of Examples 1 to 6 of the present invention, the heat-resistant resin layer is not peeled off during molding and heat sealing, and is heat-resistant even in a high-temperature and high-humidity environment. The resin layer was also hardly peeled off.

相較於此,作為主劑使用的聚酯樹脂之分子量等偏離本發明之規定範圍的比較例1之成形用包裝材,於熱封時及在高溫多濕的環境下使用後,耐熱性樹脂層剝離的情形較多。此外,作為硬化劑的多官能異氰酸酯化合物中的芳香族系多官能異氰酸酯化合物之含有率未達50莫爾%的比較例2、3之成形用包裝材,於熱封時及在高溫多濕的環境下使用後,耐熱性樹脂層剝離的情形較多。 In contrast, the molding packaging material of Comparative Example 1 having a molecular weight or the like which is used as a main component deviating from the predetermined range of the present invention is used after heat sealing and in a high-temperature and high-humidity environment, and the heat-resistant resin is used. There are many cases where the layer is peeled off. In addition, the packaging materials for molding of Comparative Examples 2 and 3 in which the content of the aromatic polyfunctional isocyanate compound in the polyfunctional isocyanate compound as the curing agent is less than 50 mol% are hot-sealed and humid at high temperature. After the use in the environment, the heat resistant resin layer is often peeled off.

【產業上利用的可能性】[The possibility of industrial use]

本發明的成形用包裝材,係可較佳地作為筆記型電腦用、行動電話用、車載用、固定型的鋰離子聚合物蓄電池等的電池外殼使用;除此之外,亦可較佳地作為食品的包裝材、醫藥品的包裝材,且並無限定僅能作為此等用途。其中,特佳係作為電池外殼使用。 The packaging material for molding of the present invention can be preferably used as a battery case for a notebook computer, a mobile phone, a vehicle, or a stationary lithium ion polymer battery; As a packaging material for foods and a packaging material for pharmaceuticals, it is not limited to such use. Among them, the special system is used as a battery case.

本申請案,係伴隨著在2014年5月16日提出申請的日本專利申請案的特願2014-102149號的優先權主張,其揭示內容直接構成本申請案的一部分。 The present application claims priority to Japanese Patent Application No. 2014-102149, the entire disclosure of which is incorporated herein by reference.

在此所使用的用語及說明,係用以說明本發明的實施形態所使用,但本發明並不限定於此。在本發明所揭示且敘述的特徵事項的任何均等物皆不應被排除,且在本發明所請求的範圍內的各種變形亦應被理解為係可被接受的。 The terms and descriptions used herein are for describing embodiments of the invention, but the invention is not limited thereto. It is to be understood that any equivalents of the features disclosed and described herein are not to be construed as limited.

1‧‧‧成形用包裝材 1‧‧‧Forming packaging materials

2‧‧‧耐熱性樹脂層(外側層) 2‧‧‧Heat resistant resin layer (outer layer)

3‧‧‧熱可塑性樹脂層(內側層) 3‧‧‧ thermoplastic resin layer (inner layer)

4‧‧‧金屬箔層 4‧‧‧metal foil layer

4a‧‧‧金屬箔層內側面 4a‧‧‧ inside the metal foil layer

5‧‧‧第1接著劑層 5‧‧‧1st adhesive layer

6‧‧‧第2接著劑層 6‧‧‧2nd adhesive layer

10‧‧‧著色油墨層 10‧‧‧Colored ink layer

Claims (7)

一種成形用包裝材,其係包含:作為外側層之耐熱性樹脂層、作為內側層之熱可塑性樹脂層、配設於此等兩層間之金屬箔層、及配設於該金屬箔層與前述耐熱性樹脂層之間之著色油墨層,其特徵為:前述著色油墨層,係由著色油墨組成物所成,該著色油墨組成物係包含:作為主劑之聚酯樹脂及作為硬化劑之多官能異氰酸酯化合物所成之二液硬化型聚酯聚氨酯樹脂接著劑、及含有無機顏料之著色顏料;前述作為主劑之聚酯樹脂之數目平均分子量(Mn)為8000~25000,質量平均分子量(Mw)為15000~50000,該等之比率(Mw/Mn)為1.3~2.5;前述作為硬化劑之多官能異氰酸酯化合物之50莫爾%以上為芳香族系多官能異氰酸酯化合物。 A packaging material for molding, comprising: a heat-resistant resin layer as an outer layer; a thermoplastic resin layer as an inner layer; a metal foil layer disposed between the two layers; and a metal foil layer disposed thereon A colored ink layer between the heat resistant resin layers, wherein the colored ink layer is formed of a colored ink composition comprising: a polyester resin as a main component and a hardener a two-liquid-curing polyester urethane resin adhesive composed of a functional isocyanate compound, and a color pigment containing an inorganic pigment; the number average molecular weight (Mn) of the polyester resin as a main component is 8000 to 25000, and the mass average molecular weight (Mw) The ratio is (Mw/Mn) of 1.3 to 2.5, and the 50% by mole or more of the polyfunctional isocyanate compound as the curing agent is an aromatic polyfunctional isocyanate compound. 如申請專利範圍第1項所記載之成形用包裝材,其中,前述著色油墨層中,相對於前述作為主劑之聚酯樹脂及前述著色顏料之合計質量,著色顏料之含有質量的比例為5質量%~60質量%。 The packaging material for molding according to the first aspect of the invention, wherein the ratio of the mass of the coloring pigment to the total mass of the polyester resin as the main component and the coloring pigment is 5 Mass%~60% by mass. 如申請專利範圍第1或第2項所記載之成形用包裝材,其中,前述著色顏料之50質量%以上係由前述無機顏料所構成。 The packaging material for molding according to the first or second aspect of the invention, wherein the coloring pigment is 50% by mass or more of the inorganic pigment. 如申請專利範圍第1~3項中任一項所記載之成形用包裝材,其中,前述二液硬化型聚酯聚氨酯樹脂接著劑,其藉由前述主劑與前述硬化劑反應後之硬化膜的拉伸試驗(JIS K7162)獲得之楊氏模量為70MPa~400MPa。 The packaging material for molding according to any one of the first to third aspect of the invention, wherein the two-liquid-curable polyester urethane resin adhesive agent is a cured film obtained by reacting the main agent with the curing agent. The Young's modulus obtained by the tensile test (JIS K7162) is 70 MPa to 400 MPa. 如申請專利範圍第1~4項中任一項所記載之成形用包裝材,其中,於前述金屬箔層之至少一面形成有化成皮膜。 The packaging material for molding according to any one of claims 1 to 4, wherein a chemical conversion film is formed on at least one surface of the metal foil layer. 一種成形外殼,其特徵為其係對申請專利範圍第1~5項中任一項所記載之成形用包裝材進行深引伸成形或鼓脹成形而成者。 A molded case which is characterized by being subjected to deep drawing or bulging molding of the packaging material for molding described in any one of claims 1 to 5. 如申請專利範圍第6項所記載之成形外殼,其中,其係作為電池外殼使用者。 The molded case according to claim 6, wherein the molded case is a battery case user.
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