KR20170142880A - Sealant film for exterior material of electric storage device, exterior material for electric storage device and manufacturing method thereof - Google Patents

Abstract

A sealant film (3) is configured to include at least one non-oriented film layer having: polypropylene-based polymer; at least one kind of first lubricant selected from a group consisting of saturated fatty acid amide and unsaturated fatty acid amide; and at least one kind of second lubricant selected from a group consisting of saturated fatty acid bisamide and unsaturated fatty acid bisamide. By such configuration, provided is the sealant film for exterior material of an electric storage device which inhibits reduction of an amount of lubricant precipitated on a surface of the exterior material to have excellent moldability and makes it difficult to precipitate white powder on the surface.

Description

TECHNICAL FIELD [0001] The present invention relates to a sealant film for an exterior material of an electric storage device, an exterior material for an electric storage device, and a manufacturing method thereof. BACKGROUND OF THE INVENTION 1. Field of the Invention [0002]

The present invention constitutes a casing of a battery device such as a battery or a condenser used for a battery used in a portable device such as a smart phone or a tablet, a condenser, a hybrid car, an electric car, a wind power generator, A sealant film to be used, a casing for a power storage device using the sealant film, and a manufacturing method thereof.

Further, in the claims and the specification of the present application, the term " fatty acid amide " is used not to include " fatty acid bisamide. &Quot;

Description of the Related Art [0002] In recent years, as mobile electrical appliances such as smart phones and tablet terminals have become thinner and lighter in weight, they have been used as exterior materials for electric storage devices such as lithium ion secondary batteries, lithium polymer secondary batteries, lithium ion capacitors, A laminate composed of a heat resistant resin layer / adhesive layer / metal foil layer / adhesive layer / thermoplastic resin layer (inner sealant layer) is used in place of the conventional metal can. Also, power sources for electric vehicles, large-sized power sources for electric power storage, and capacitors have also been increasingly externally enclosed in the laminated body (outer casing). The laminate is formed into a three-dimensional shape such as a substantially rectangular parallelepiped shape by performing extrusion molding or deep drawing molding. By molding the battery into the three-dimensional shape, it is possible to secure a space for accommodating the power storage device main body portion.

In order to form such a three-dimensional shape in a good state without pinholes or fractures, it is required to improve the slidability of the surface of the inner sealant layer. A laminate obtained by sequentially laminating an exterior resin film, a first adhesive layer, a chemically treated aluminum foil, a second adhesive layer, and a sealant film in order to improve the slidability of the surface of the inner sealant layer to secure good moldability , Wherein the sealant film comprises a random copolymer of propylene and an? -Olefin having an? -Olefin content of 2 to 10% by weight and contains 1000 to 5000 ppm of a lubricant, A laminated material has been proposed (see Patent Document 1).

Patent Document 1: JP-A-2003-288865

However, in the above-mentioned conventional techniques, it is difficult to control the deposition amount of the surface lubricant by the heating holding time and the storage period in the production process of the casing (laminating material), and slipping property at the time of molding is good. However, Therefore, the lubricant adheres to and deposits on the molding surface of the molding die at the time of molding of the casing, so that white powder (white powder by lubricant) is generated. When such a white powder is adhered to and deposited on the molding surface, it is difficult to perform good molding. Therefore, it is necessary to clean the white powder every time the white powder adheres and deposits to remove the white powder. There is a problem that the productivity of the exterior material deteriorates.

Of course, when the amount of the lubricant added (lubricant content) is reduced, it is possible to suppress deposition and deposition of white powder, but in this case, there arises a problem that the amount of surface lubricant deposition is insufficient and the formability is poor. Thus, in the past, it has been difficult to achieve both excellent moldability and suppression of whitening on the surface of the casing.

SUMMARY OF THE INVENTION The present invention has been made in view of such a technical background, and it is an object of the present invention to provide an antifouling coating composition which can suppress a decrease in the amount of lubricant deposited on the surface of a casing, It is an object of the present invention to provide a sealant film for an exterior material of a battery device, an exterior material for a battery device, and a method of manufacturing the same.

In order to achieve the above object, the present invention provides the following means.

[1] A propylene-based polymer composition comprising a propylene polymer, at least one first lubricant selected from the group consisting of a saturated fatty acid amide and an unsaturated fatty acid amide, and at least one second lubricant selected from the group consisting of fatty acid bisamide and aromatic bisamide And at least one non-oriented film layer containing at least one non-oriented film layer.

At least one first lubricant selected from the group consisting of a propylene polymer, a saturated fatty acid amide and an unsaturated fatty acid amide, and at least one second lubricant selected from the group consisting of a fatty acid bisamide and an aromatic bisamide And a non-oriented film layer formed on the surface of the non-oriented film.

[3] The laminate of two or more layers comprising a first non-extensible film layer and a second non-extensible film layer laminated on one surface of the first non-extensible film layer, And the first non-stretchable film layer comprises a random copolymer containing a copolymerization component other than propylene and propylene as a copolymerization component and a lubricant, and the second non-stretched film layer Comprises a block copolymer containing a copolymerization component other than propylene and propylene as a copolymerization component and a lubricant, wherein the lubricant in the first non-extensible film layer and / or the lubricant in the second non-extensible film layer is saturated At least one first lubricant selected from the group consisting of fatty acid amides and unsaturated fatty acid amides and at least one second lubricant selected from the group consisting of fatty acid bisamide and aromatic bisamide A sealant film for a casing of an electrical storage device, characterized in that it comprises one kind of second lubricant.

A second non-extensible film layer laminated on one surface of the second non-extensible film layer; and a second non-extensible film layer laminated on the other surface of the second non-extensible film layer, Wherein at least one of the first non-extension film layer and the second non-extension film layer is composed of a laminate of three or more layers including a new film layer, , And a lubricant, and the second non-extensible film layer contains a block copolymer containing a copolymerization component other than propylene and propylene as a copolymerization component and a block copolymer containing a lubricant , The lubricant in the first non-tear film layer forming the innermost layer of the casing and / or the lubricant in the second non-tear film layer in the group consisting of the saturated fatty acid amide and the unsaturated fatty acid amide And the first lubricant, of at least one housing, fatty acid bisamides and aromatic exterior sealant film of the bis power storage device comprising a second lubricant, of at least one member selected from the group consisting of amides.

[5] The method according to item 3, wherein the total content of all the lubricants contained in the first non-tear film layer is in the range of 200 ppm to 7000 ppm, and the sum of the content concentrations of all the lubricants contained in the second non- A sealant film for a casing of an electric storage device according to claim 1 or 2.

[6] The storage medium according to any one of items 1 to 5 above, wherein the ratio of the content of the second lubricant to the total value of the content concentrations of all the lubricants in the layer containing the second lubricant is 5% to 90% Sealant film for exterior of device.

[7] An exterior member for an electric storage device, comprising an inner sealant layer made of the sealant film according to any one of the items 1 to 6, and a metal foil layer laminated on one side of the inner sealant layer.

[8] An outer casing for a power storage device, comprising a heat-resistant resin layer as an outer layer, an inner sealant layer comprising a sealant film as described in any one of items 1 to 6, and a metal foil layer disposed between these layers.

[9] An exterior member for electric storage devices according to item 7 or 8, wherein the amount of lubricant present on the surface of the first non-oriented film layer forming the innermost layer of the exterior material is in a range of 0.1 μg / cm 2 to 1.0 μg /

[10] An external case for an electric storage device comprising a molded article of an exterior material according to any one of [7] to [9].

[11] A process for producing a laminate comprising the sealant film described in any one of the above items 1 to 6 and a laminate obtained by laminating a metal foil with a first adhesive,

And an aging step of subjecting the laminate to a heat treatment to obtain an exterior material for a power storage device.

[12] The method for manufacturing an exterior member for an electric storage device according to the item 11, wherein the first adhesive is a thermosetting adhesive.

[13] A method for manufacturing a metal foil having a structure in which a heat-resistant resin film is laminated on one surface of a metal foil through a second adhesive and a sealant film described in any one of the items 1 to 6 is laminated on the other surface of the metal foil, A step of preparing a laminate,

And an aging step of subjecting the laminate to a heat treatment to obtain an exterior material for a power storage device.

[14] The method for manufacturing an exterior member for an electric storage device according to item 13, wherein the first adhesive is a thermosetting adhesive, and the second adhesive is a thermosetting adhesive.

[15] Any of the above-mentioned 11 to 14, wherein the amount of lubricant present on the surface of the first non-tear film layer forming the innermost layer of the jacket for electric storage devices obtained by the heat treatment is in the range of 0.1 μg / cm 2 to 1.0 μg / A method for manufacturing a jacket for a power storage device according to claim 1.

In the invention of [1], since at least one layer of the unstretched film layer containing the specific first lubricant and the specific second lubricant is contained, It is possible to suppress the reduction of the amount of lubricant to be deposited) and to secure a good slippery property at the time of molding, which is excellent in moldability and hardly shows white powder on the surface of the casing. In addition, since the amount of the lubricant present on the surface of the casing does not vary even when subjected to thermal hysteresis at the time of transportation or storage, it is possible to provide the casing with stably excellent moldability.

In the invention of [2], since the sealant film is constituted by the non-stretched film layer containing the specific first lubricant and the specific second lubricant, the sealant film can be easily removed from the surface of the outer sealant (the surface of the inner sealant layer) It is possible to suppress the reduction of the amount of lubricant to be deposited) and to secure a good slippery property at the time of molding, which is excellent in moldability and hardly shows white powder on the surface of the casing. In addition, since the amount of lubricant present on the surface of the casing does not fluctuate even when subjected to a thermal history during transport or storage, it is possible to provide a casing with stable formability.

In the inventions of [3] and [4], it is preferable that the lubricant in the lubricant and / or the second non-tear film layer in the first non-tear film layer forming the innermost layer of the casing is composed of the specific first lubricant and the specific second lubricant It is possible to suppress the decrease in the amount of (lustering) of the lubricant present on the surface of the exterior material (the surface 7a of the innermost layer of the inner sealant layer), so that it is possible to secure a good slippery property at the time of molding And it is difficult to display white powder on the surface of the exterior material (the surface 7a of the innermost layer of the inner sealant layer). Further, since the amount of the lubricant present on the surface of the casing does not fluctuate even when it is subjected to heat history during transport or storage, it is possible to provide a casing having stably excellent moldability.

In the invention of [5], since the total content of all the lubricants in the first non-rolled film layer is 200 ppm to 7000 ppm and the total value of the contained concentrations of all lubricants in the second non-rolled film layer is 500 ppm to 7000 ppm, The amount of lubricant to be deposited on the surface of the casing can be controlled within the range of 0.1 / / cm 2 to 1.0 / / cm 2 even when receiving heat history during transportation or storage.

In the invention of [6], in the layer containing the second lubricant, since the ratio of the content concentration of the second lubricant to the sum of the content concentrations of all the lubricants in the layer is 5% to 90% The migration of the lubricant can be restricted, and the amount of lubricant deposited on the surface of the casing can be controlled within the range of 0.1 占 퐂 / cm2 to 1.0 占 퐂 / cm2.

[7] and [8], it is possible to suppress a reduction in the amount of (lubricating) lubricant present on the surface of the casing (the innermost layer surface 7a of the inner sealant layer) It is possible to provide an exterior material for an electric storage device which is excellent in moldability and is hardly exposed to the surface (the surface 7a of the innermost layer of the inner sealant layer) of the exterior material. In addition, since the amount of lubricant present on the surface of the casing does not fluctuate even when subjected to a thermal history during transport or storage, it is possible to provide a casing with stable formability.

Further, in the invention of [8], since the heat-resistant resin layer as the outer layer is provided, it is possible to sufficiently secure insulation on the opposite side of the inner sealant layer in the metal foil layer and to improve the physical strength and impact resistance have.

According to the invention of [9], since the amount of lubricant present on the surface of the innermost layer is in the range of 0.1 μg / cm 2 to 1.0 μg / cm 2, better slipperiness can be exhibited during molding and satisfactory moldability can be ensured , It is possible to sufficiently suppress the appearance of white powder on the surface of the casing, thereby preventing contamination of the working apparatus.

According to the invention of [10], it is possible to provide an external case for an electric storage device in which a portion is not easily exposed on the surface (the surface of the innermost layer of the inner sealant layer) of the external case as an external case with good molding.

According to the inventions of [11] to [14], it is possible to suppress the decrease (decrease) in the amount of the lubricant present on the surface of the casing (the innermost layer surface 7a of the inner sealant layer) It is possible to obtain an exterior material for an electric storage device which is excellent in moldability and is hardly exposed to the surface (the surface 7a of the innermost layer of the inner sealant layer) of the exterior material.

In addition, since the heat-resistant resin layer as the outer layer is provided in the inventions of [13] and [14], it is possible to sufficiently secure insulation on the opposite side of the inner sealant layer in the metal foil layer, Can be improved.

In the invention of [15], since the amount of lubricant present on the surface of the innermost layer is in the range of 0.1 μg / cm 2 to 1.0 μg / cm 2, better slipperiness can be exhibited during molding and satisfactory moldability can be ensured It is possible to manufacture an exterior material for a power storage device that can prevent the appearance of white powder. Further, the amount of lubricant (0.1 μg / cm 2 to 1.0 μg / cm 2) present on the surface of the outer cover material for the electrical device thus obtained does not fluctuate even when subjected to thermal hysteresis during transport or storage, Can be provided.

1 is a cross-sectional view showing a first embodiment of a casing for a power storage device according to the present invention.
2 is a cross-sectional view showing a second embodiment of a casing for a power storage device according to the present invention.
3 is a cross-sectional view showing a third embodiment of a casing material for a power storage device according to the present invention.
4 is a cross-sectional view showing an embodiment of a power storage device according to the present invention.
Fig. 5 is a perspective view showing a casing (planar type) constituting the power storage device of Fig. 4, a power storage device main body portion, and an external case (formed body molded in a three-dimensional shape) before being heat-sealed.

The sealant film (3) for a casing of a battery device according to the present invention is characterized by comprising a propylene polymer, at least one first lubricant selected from the group consisting of a saturated fatty acid amide and an unsaturated fatty acid amide, And at least one non-oriented film layer comprising one or more second lubricants selected from the group consisting of aromatic bisamide.

Examples of the propylene-based polymer include, but are not particularly limited to, a random copolymer containing "propylene" and "another copolymerizable component other than propylene" as the copolymerization component, "propylene" Copolymerizable component ", homopolypropylene, and the like.

Three embodiments of the sealant film 3 for a casing of a power storage device according to the present invention are shown in Figs. 1 to 3, respectively. These three embodiments are merely representative examples, and the present invention is not limited to such a configuration.

The outer casing sealant film 3 of the first embodiment shown in Fig. 1 has a first non-extensible film layer 7 and a second non-extensible film layer 8 laminated on one surface of the first non-extensible film layer, (A two-layer laminated structure). The first non-extension film layer 7 is disposed on the innermost layer side (see Fig. 1) and the second non-extension film layer 8 is formed on the innermost layer side And the first non-stretch film layer 7 is exposed on the inner surface of the jacket 1 (see Fig. 1).

The second sealant film 3 according to the second embodiment shown in Fig. 2 has a second non-extensible film layer 8 and a second non-extensible film layer 8 laminated on one surface of the second non- Layer structure composed of a film layer 7 and a first non-extensible film layer 9 laminated on the other surface of the second non-extensible film layer 8. In the case member 1 constituted by using the sealant film 3, one of the first lead-free leadfilm film layers 7 is disposed on the innermost layer side of the covering member 1 (see FIG. 2) The non-oriented film layer 9 is disposed on the metal foil layer 4 side and the first non-oriented film layer 7 on one side is exposed on the inner surface of the covering material 1 (see FIG. 2).

In the sealant film for exterior packaging material (3) according to the first and second embodiments, the first non-stretchable film layer (7, 9) comprises a random copolymer containing a copolymerization component other than propylene and propylene as a copolymerization component, And the second lead-free film layer (8) contains a block copolymer containing a copolymerization component other than propylene and propylene as a copolymerization component, and a lubricant. The lubricant in the first non-tear film layer (7) and / or the lubricant in the second non-tear film layer (8) forming the innermost layer of the casing member (1) are preferably composed of a saturated fatty acid amide and an unsaturated fatty acid amide And at least one second lubricant selected from the group consisting of fatty acid bisamides and aromatic bisamides. By employing such a specific constitution with respect to the content of the lubricant, it is possible to suppress the decrease in the amount of the lubricant present (precipitate) on the surface of the casing member 1 (the surface 7a of the innermost layer of the inner sealant layer) It is possible to secure a good slippery property at the time of molding, so that the moldability is excellent and the surface is hardly exposed on the surface of the casing member 1 (the surface 7a of the innermost layer of the inner sealant layer).

The exterior sealant film 3 of the third embodiment shown in Fig. 3 is composed of only the first non-stretchable film layer 7. The first non-stretchable film layer 7 is disposed on the innermost layer side (see Fig. 3), and the first non-stretchable film layer 7 is disposed on the innermost layer side of the covering material 1 formed by using the sealant film 3 And exposed on the inner surface of the casing member 1 (see Fig. 3). In the sealant film for exterior packaging material (3) of the third embodiment, the first non-stretchable film layer (7) is composed of a propylene-based polymer and at least one kind of polymer selected from the group consisting of a saturated fatty acid amide and an unsaturated fatty acid amide 1 lubricant and at least one second lubricant selected from the group consisting of fatty acid bisamide and aromatic bisamide. By adopting such a specific constitution with respect to the content of the lubricant, it is possible to suppress a reduction in the amount of lubricant (present in the surface of the inner sealant layer) present on the surface of the casing member 1, So that it is excellent in moldability, and it is difficult to express white powder on the surface of the casing member 1.

In the present invention, the specific second bobbin is contained together with the specific first bobbin, and the content of the specific second bobbin increases the association size of the lubricant (the association size increases), and as a result, Excessive migration to the surface, and excessive migration of the lubricant to adjacent layers can be sufficiently suppressed.

In the sealant film 3 of the present invention, when the sealant film 3 employs a multilayer structure of two or more layers (Figs. 1 and 2), it is preferable to employ the following structure. That is, as the propylene polymer constituting the first and second lead-free film layers 7 and 9, it is preferable to use a random copolymer containing "propylene" and "another copolymer component other than propylene" as the copolymerization component. With respect to the random copolymer, the "other copolymer component excluding propylene" is not particularly limited, and examples thereof include ethylene, 1-butene, 1-hexene, 1-pentene and 4-methyl- In addition to the olefin component, butadiene and the like can be mentioned.

As the propylene polymer constituting the second non-tear film layer 8, it is preferable to use a block copolymer containing "propylene" and "another copolymer component other than propylene" as the copolymerization component. With regard to the block copolymer, the "other copolymer component excluding propylene" is not particularly limited, and examples thereof include ethylene, 1-butene, 1-hexene, 1-pentene and 4-methyl- In addition to the olefin component, butadiene and the like can be mentioned.

In the case where the sealant film 3 has a two-layer structure or more (Figs. 1 and 2), the total concentration of the content of all the lubricants contained in the first non-tear film layer 7 is 200 ppm to 7000 ppm , And the sum of the content concentrations of all the lubricants contained in the second non-tear film layer (8) is in the range of 500 ppm to 7000 ppm. Further, it is preferable that the total concentration of all the lubricants contained in the first non-tear film layer (9) is 200 ppm to 7000 ppm. By satisfying this condition, it is possible to suppress the movement of the lubricant present in the first non-extension film layer 7 into the second non-extension film layer 8 when the aging treatment for curing the adhesive is performed It is possible to secure the amount of lubricant to be deposited on the surface of the casing member 1 (the surface 7a of the innermost first non-extruded film layer), so that good slipperiness can be secured during molding of the casing member, Moldability can be obtained. If the concentration of the lubricant in the first non-tear film layer 7 is less than 200 ppm, the amount of lubricant present on the surface 7a of the innermost layer becomes small after the aging treatment for curing the adhesive, However, if the amount exceeds 7000 ppm, it is likely that the surface 7a of the innermost layer easily becomes white after the aging treatment for curing the adhesive, so that it is necessary to clean and remove the white powder, And when it is used as an exterior material, it is also not preferable because adhesion with the metal foil layer is reduced and contamination of the electrolytic solution tends to occur. When the content concentration of the lubricant in the second non-tear film layer 8 is less than 500 ppm, when the aging treatment for curing the adhesive is carried out, the first non-rolled film layer 7, which is the innermost layer, The lubricant is liable to move to the layer 8 and the amount of lubricant present on the surface 7a of the innermost layer becomes small and the formability is deteriorated. When it exceeds 7000 ppm, the aging treatment for curing the adhesive is performed , The lubricant is likely to move from the second non-rolled film layer (8) to the first non-rolled film layer (7, 9), and the contamination of the device during production is apt to occur. It is not preferable because contamination of the electrolytic solution tends to occur.

Among them, the concentration of the lubricant in the first non-tear film layer (7, 9) is preferably in the range of 300 ppm to 2000 ppm, and more preferably in the range of 800 ppm to 1500 ppm. The concentration of the lubricant in the second non-toughened film layer (8) is preferably in the range of 700 ppm to 3000 ppm, more preferably in the range of 800 ppm to 2500 ppm.

In the case where the sealant film 3 employs a two-layer structure or more (Figs. 1 and 2), the concentration of the lubricant contained in the second non-extensible film layer 8 is set so that the innermost layer of the outer casing 1 Is preferably 0.1 to 10 times the concentration of the lubricant in the first non-tear film layer (7) to be formed. 0.1 times or more, the aging treatment for curing the adhesive causes the interface between the lubricant concentration gradient of the lubricant from the first non-rolled film layer (7) as the innermost layer to the second non-rolled film layer (8) (The interface between the layers 7 and 8) can be suppressed, whereby the amount of the lubricant present on the surface 7a of the innermost layer is sufficient, and more excellent formability can be obtained, When the aging treatment for curing the adhesive is performed, the interface by the lubricant concentration gradient of the lubricant from the second non-rolled film layer 8 to the innermost first non-rolled film layer 7 (both film layers 7 and 8 ) Can be suppressed, and the variation of the content of the lubricant in the innermost layer of the first non-oriented film layer 7 can be sufficiently suppressed. Among them, the concentration of the lubricant contained in the second non-tear film layer 8 is preferably 0.5 to 5.0 times the concentration of the lubricant in the first non-tear film layer 7 forming the innermost layer of the casing material 1 A double-layer structure is more preferable.

In the sealant film (3) of the present invention, in the layer containing the second lubricant, the ratio of the content of the second lubricant to the total of the content concentrations of all the lubricants in the layer is preferably 5% to 90% And more preferably 10% to 50%.

As the first lubricant, at least one lubricant selected from the group consisting of a saturated fatty acid amide and an unsaturated fatty acid amide is used. Examples of the saturated fatty acid amide include, but are not limited to, lauric acid amide, palmitic acid amide, stearic acid amide, behenic acid amide, and hydroxystearic acid amide. Examples of the unsaturated fatty acid amide include, but are not limited to, oleic acid amide and erucic acid amide. Also, in this specification, the term "saturated fatty acid amide" does not include saturated fatty acid bisamide, and the term "unsaturated fatty acid amide" does not include unsaturated fatty acid bisamide.

As the second lubricant, one or two or more lubricants selected from the group consisting of fatty acid bisamide and aromatic bisamide are used. Examples of the fatty acid bisamides include saturated fatty acid bisamides and unsaturated fatty acid bisamides. Examples of the saturated fatty acid bisamide include, but are not limited to, methylene bisstearic acid amide, ethylene biscaprylic acid amide, ethylene bislauric acid amide, ethylene bisstearic acid amide (EBSA), ethylene bishydroxystearic acid amide, Hexamethylenebisbenzamide amide, hexamethylene hydroxystearamide amide, N, N'-distearyl adipic acid amide, N, N'-distearyl sebacic acid amide, etc. . Examples of the unsaturated fatty acid bisamide include, but are not limited to, ethylenbis oleic acid amide (EBOA), ethylene bis erucic acid amide, hexamethylene bis oleic acid amide, N, N'-dioleoyl adipic acid amide, N , N'-dioleyl sebacic acid amide, and the like.

Examples of the aromatic bisamide include, but are not limited to, m-xylylene bisstearic acid amide, m-xylylene bishydroxystearic acid amide, N, N'-distearyl isophthalic acid amide and the like .

The thickness of the sealant film 3 is preferably set to 10 to 100 m. By setting the thickness to 10 mu m or more, the occurrence of pinholes can be sufficiently prevented, and by setting the thickness to 100 mu m or less, the amount of resin used can be reduced and the cost can be reduced.

1 is adopted as the sealant film 3, the ratio of the thickness of the two layers is set so that the thickness of the first non-stretched film layer 7 / the thickness of the second non-stretched film layer 8, The thickness of the first non-rolled film layer 7 / the thickness of the second non-rolled film layer 8 = 5 to 40/95 to 10, And particularly preferably in the range of 95 to 60.

In the case of employing the three-layer laminated structure of Fig. 2 as the sealant film 3, the ratio of the thickness of the three layers is preferably set such that the thickness of the first non-stretched film layer 7 / The thickness of the first non-stretchable film layer 8 is preferably set in the range of 5 to 45/90 to 10/5 to 45, It is particularly preferable that the thickness / thickness of the second non-extensible film layer 8 / thickness of the first non-extensible film layer 9 is in the range of 5 to 20/90 to 60/5 to 20.

An anti-blocking agent may be contained in the first non-stretched film layer 7 forming the innermost layer. An anti-blocking agent may be added to both the first non-tear film layer (7) forming the innermost layer and the first non-tear film layer (9) on the metal foil layer side. The anti-blocking agent is not particularly limited, and examples thereof include silica particles, acrylic resin particles, aluminum silicate particles, and the like. The average particle diameter of the anti-blocking agent is preferably in the range of 0.1 to 10 占 퐉, and more preferably in the range of 1 to 5 占 퐉. When the anti-blocking agent is contained in the first non-extending film layers 7 and 9, the content thereof is preferably set to 100 ppm to 5000 ppm.

By containing the anti-blocking agent (particles) in the first non-stretched film layer 7 forming the innermost layer, fine protrusions are formed on the surface 7a of the innermost layer 7, The blocking of the sealant films can be suppressed. In addition, by containing an anti-blocking agent (particle) together with the lubricant, slipperiness during molding can be further improved.

The sealant film 3 is preferably produced by a molding method such as multilayer extrusion molding, inflation molding, and T-die cast film molding.

The casing (1) for a battery device according to the present invention is manufactured by using the sealant film (3) having the above-described structure. A heat-resistant resin film (outer layer) 2 is laminated on one surface of the metal foil 4 through a second adhesive (outer adhesive) 5 and a first adhesive (inner side) is laminated on the other surface of the metal foil 4 (Adhesive agent) 6 is laminated on the sealant film 3 of the first embodiment. At this time, the second unstretched film layer 8 of the sealant film 3 abuts against the first adhesive (inner adhesive) 6 (see Fig. 1). That is, the first non-stretched film layer 7 of the sealant film 3 forms the innermost layer (see Fig. 1). Next, the outer cover material (1) for an electrical storage device of the present invention having the structure shown in Fig. 1 can be obtained by heat treatment (aging treatment) of the obtained laminate.

A heat-resistant resin film (outer layer) 2 is laminated on one surface of the metal foil 4 through a second adhesive (outer adhesive) 5 and a first adhesive (Inner adhesive) 6 to prepare a laminate having a structure in which the sealant film 3 of the second embodiment is laminated. At this time, one of the first non-tear film layers 9 of the sealant film 3 abuts against the first adhesive (inner adhesive) 6 (see Fig. 2). That is, the other first non-leadable film layer 7 of the sealant film 3 forms the innermost layer (see FIG. 2). Next, by applying the heat treatment (aging treatment) to the obtained laminate, the outer casing 1 for the power storage device of the present invention having the structure shown in Fig. 2 can be obtained.

A heat-resistant resin film (outer layer) 2 is laminated on one surface of the metal foil 4 through a second adhesive (outer adhesive) 5 and a first adhesive (Inner adhesive) 6 to prepare a laminate in which the sealant film 3 of the third embodiment is laminated. At this time, the first non-stretch film layer 7 of the sealant film 3 abuts against the first adhesive (inner adhesive) 6 (see Fig. 3). Further, the first non-stretched film layer 7 of the sealant film 3 forms the innermost layer (see Fig. 3). Next, the outer cover material 1 for an electric storage device of the present invention having the structure shown in Fig. 3 can be obtained by heat treatment (aging treatment) of the obtained laminate.

The first adhesive (inner adhesive) 6 is not particularly limited, and for example, a thermosetting adhesive may be used. The second adhesive (outer adhesive) 5 is not particularly limited, and examples thereof include a thermosetting adhesive. The thermosetting adhesive is not particularly limited, and examples thereof include olefin adhesives, epoxy adhesives, acrylic adhesives, and the like.

The heating temperature of the aging treatment is preferably set at 65 DEG C or lower and is preferably 35 DEG C to 45 DEG C from the viewpoints of the curing degree of the adhesive and the maintenance of an appropriate amount of the lubricant present on the surface 7a of the casing. Lt; 0 > C. As to the heating time of the aging treatment, the curing time varies depending on the kind of the adhesive. Therefore, it is sufficient that the heating time of the aging treatment is not less than the time required to obtain sufficient adhesive strength in accordance with the type of the adhesive. However, Should be as short as possible as long as sufficient adhesive strength can be obtained.

The exterior material 1 for an electrical storage device of the present invention obtained through such an aging treatment is obtained by applying a second adhesive layer (outer adhesive layer) 5 on one surface of the metal foil layer 4 to the heat resistant resin layer And the inner sealant film (inner layer) 3 (inner sealant film) are bonded to the other surface of the metal foil layer 4 via the first adhesive layer (inner adhesive layer) 6 (See Figs. 1 to 3). When the thermosetting adhesive is used as the first and second adhesives, the first adhesive layer 6 is made of a cured product of a thermosetting adhesive, and the second adhesive layer 5 is made of a cured product of a thermosetting adhesive.

Since the sealant film 3 used in the manufacture of the outer casing 1 for an electric storage device obtained through the aging treatment has the above-described specific structure, the inner layer 1 of the outer casing 1 after the aging treatment, The amount of the lubricant present on the surface 7a of the first non-stretchable film layer 7 forming the second non-stretchable film layer 7 can be controlled within a range of 0.1 / / cm2 to 1.0 / / cm2. Therefore, the outer casing 1 for electric power storage device thus obtained can suppress the reduction of the amount of lubricant existing on the surface (the surface 7a of the innermost layer of the inner sealant layer) (excellent in slipperiness during molding) And it is difficult to express white powder on the surface of the exterior material 1 (the surface 7a of the innermost layer of the inner sealant layer).

It is preferable that the surface friction coefficient of the surface 7a of the first non-leadable film layer (innermost layer) 7 is in the range of 0.10 to 0.50. 0.50 or less, slipperiness can be improved, good moldability can be ensured, and the amount of bleeding of the lubricant on the innermost layer surface 7a can be reduced by 0.10 or more.

The casing (1) for an electric storage device of the present invention is used, for example, as a casing for a lithium ion secondary battery. The exterior material 1 for the power storage device may be used as an exterior material without being subjected to molding (see Fig. 5), provided for molding such as deep drawing molding or injection molding, (See FIG. 5).

In the casing material 1 for an electric storage device of the present invention, the inner sealant layer (inner layer) 3 is provided with excellent chemical resistance against a corrosive electrolyte or the like used in a lithium ion secondary battery or the like, It plays a role of giving a hit reality.

The heat-resistant resin layer (base layer; outer layer) 2 is not an essential constituent layer, but a second adhesive (not shown) is provided on the other surface (the surface opposite to the inner sealant layer) It is preferable to adopt a configuration in which the heat resistant resin layer 2 is laminated via a layer (outer adhesive layer) 5 (see Figs. 1 to 3). By providing such a heat-resistant resin layer 2, it is possible to sufficiently secure insulation on the other surface (the surface opposite to the inner sealant layer) side of the metal foil layer 4, The impact resistance can be improved.

As the heat-resistant resin constituting the heat-resistant resin layer (base layer: outer layer) 2, a heat-resistant resin which does not melt at the heat room temperature at the time of heat sealing is used. As the heat resistant resin, it is preferable to use a heat resistant resin having a melting point higher than the melting point of the block copolymer constituting the first non-tear film layer (7) by at least 10 DEG C, and the first non-extension film layer (7) It is particularly preferable to use a heat-resistant resin having a melting point higher than the melting point of the block copolymer by 20 占 폚 or more.

The heat resistant resin layer (outer layer) 2 is not particularly limited, and for example, a polyamide film such as a nylon film, a polyester film, and the like are preferably used. The heat resistant resin layer 2 is preferably a biaxially oriented polyamide film such as a biaxially oriented nylon film, a biaxially oriented polybutylene terephthalate (PBT) film, a biaxially oriented polyethylene terephthalate (PET) film, or a biaxially oriented poly It is particularly preferable to use a biaxially stretched polyethyl naphthalate (PEN) film. The nylon film is not particularly limited, and examples thereof include 6 nylon film, 6,6 nylon film, and MXD nylon film. The heat resistant resin layer 2 may be formed of a single layer or may be formed of a multilayer (PET film / nylon film, for example) layer made of a polyester film / polyamide film.

The thickness of the heat resistant resin layer (outer layer) 2 is preferably 2 m to 50 m. When a polyester film is used, the thickness is preferably 2 m to 50 m, and when the nylon film is used, the thickness is preferably 7 m to 50 m. By setting the upper limit to a value not less than the appropriate lower limit value, sufficient strength can be ensured as the exterior material, and by setting the upper limit at or below the appropriate upper limit, the stress during molding such as injection molding and drawing can be reduced and moldability can be improved.

In the exterior member 1 for an electrical storage device according to the present invention, a surface of the heat-resistant resin layer (outer layer) 2 opposite to the metal foil layer 4 is provided with a heat- It is preferable that the lubricant contained in the one non-oriented film (7) adhere. This adhesive agent is applied to the inner layer 3 by contact with the surface 7a of the inner sealant layer 3 in a wound state when the outer casing 1 for a power storage device obtained by the laminating process is wound, Lt; / RTI > The deposition amount after the transfer is preferably in the range of 0.1 / / cm 2 to 0.8 / / cm 2. If the deposition amount is in this range, the moldability of the casing member 1 for a power storage device can be enhanced. Among them, the adhesion amount after the transfer is more preferably in the range of 0.1 / / cm 2 to 0.6 / / cm 2, and particularly preferably in the range of 0.15 / / cm 2 to 0.45 / / cm 2. After the outer casing 1 for the power storage device is formed by deep drawing or the like, the transfer lubricant may be removed, left to stand, or disappear naturally.

The metal foil layer 4 plays a role of imparting gas barrier properties to the exterior material 1 so as to prevent the intrusion of oxygen and moisture. The metal foil layer 4 is not particularly limited. Examples of the metal foil layer 4 include aluminum foil, SUS foil (stainless steel foil) and copper foil. Among them, aluminum foil and SUS foil (stainless foil) . The thickness of the metal foil layer 4 is preferably 5 to 120 mu m. It is possible to prevent occurrence of pinholes at the time of rolling at the time of producing the metal foil and to reduce the stress at the time of forming such as extrusion molding and drawing by making it 120 탆 or less, have. In particular, the thickness of the metal foil layer 4 is more preferably from 10 탆 to 80 탆.

It is preferable that the metal foil layer 4 is chemically treated at least on the inner surface (the surface on the inner sealant layer 3 side). Since such a chemical treatment is carried out, the corrosion of the surface of the metal foil by the contents (electrolytic solution of the battery, etc.) can be sufficiently prevented. For example, the metal foil is subjected to a chemical conversion treatment by the following process. That is, for example, on the surface of the metal foil subjected to the degreasing treatment,

1) An aqueous solution of a mixture comprising at least one compound selected from the group consisting of phosphoric acid, chromic acid, and metal salts of fluoride and non-metal salts of fluoride.

2) a mixture containing at least one resin selected from the group consisting of phosphoric acid, an acrylic resin, a chitosan derivative resin and a phenol resin, and at least one compound selected from the group consisting of chromic acid and chromium (III) salt Of aqueous solution.

3) at least one resin selected from the group consisting of phosphoric acid, an acrylic resin, a chitosan derivative resin and a phenol resin; at least one compound selected from the group consisting of chromic acid and chromium (III) salt; And a non-metallic salt of a metal salt and a fluoride.

The chemicals in 1) to 3) above are subjected to a chemical treatment by applying one aqueous solution and then drying.

The above-mentioned chemical conversion film is preferably from 0.1 mg / m 2 to 50 mg / m 2, particularly preferably from 2 mg / m 2 to 20 mg / m 2 as the chromium adhering amount (per one side).

The thickness of the second adhesive layer (outer adhesive layer) 5 is preferably set to 1 m to 5 m. In particular, from the viewpoint of thinning and lightening of the exterior member 1, it is particularly preferable that the thickness of the external adhesive layer 5 is set to 1 탆 to 3 탆.

The thickness of the first adhesive layer (inner adhesive layer) 6 is preferably set to 1 m to 5 m. Particularly, from the viewpoint of thinning and lightening of the facer material 1, it is particularly preferable that the thickness of the inner adhesive layer 6 is set to 1 탆 to 3 탆.

An external case (battery case or the like) 10 can be obtained by molding (by deep drawing molding, extrusion molding, etc.) of the exterior member 1 of the present invention (see Figs. In addition, the outer sheath 1 of the present invention can be used as it is without being provided for molding (see Figs. 4 and 5).

An embodiment of the electrical storage device 30 constructed using the exterior member 1 of the present invention is shown in Fig. This electric storage device 30 is a lithium ion secondary battery. In this embodiment, as shown in Figs. 4 and 5, an outer case 10 obtained by molding the outer case 1 and an outer case 1 of a planar type constitute an outer case 15. Fig. An electric storage device main body (electrochemical device or the like) 31 having an approximately rectangular parallelepiped shape is accommodated in the housing recessed portion of the outer case 10 obtained by molding the exterior material 1 of the present invention, The outer sealant 1 of the present invention is disposed on the inner sealant layer 3 of the planar outer casing 1 without forming the inner sealant layer 3 on the inner sealant layer 31, (The first non-extension film layer 7) of the flange portion (sealing periphery portion) 29 of the outer case 10 and the inner sealant layer 3 (the first non-extension film layer 7) Sealed by the heat seal and sealed, thereby constituting the electrical storage device 30 of the present invention (see Figs. 4 and 5). The inner surface of the receiving recess of the outer case 10 is the inner sealant layer 3 (the first non-leadable film layer 7) and the outer surface of the receiving recess is the heat resistant resin layer (outer layer) (See Fig. 5).

4, reference numeral 39 denotes a heat seal portion in which the periphery of the casing member 1 and the flange portion (sealing periphery portion) 29 of the casing 10 are joined (welded). In the electrical storage device 30, the leading end of the tab lead connected to the power storage device main body portion 31 is led out to the exterior of the exterior member 15, but illustration thereof is omitted.

The power storage device main body 31 is not particularly limited, and examples thereof include a battery main body, a capacitor main body, and a capacitor main body.

The width of the heat seal portion 39 is preferably set to 0.5 mm or more. By setting it to 0.5 mm or more, sealing can be reliably performed. In particular, the width of the heat seal portion 39 is preferably set to 3 mm to 15 mm.

In the above-described embodiment, the case member 15 is composed of the case member 10 obtained by molding the case member 1 and the case member 1 in a planar shape (see FIGS. 4 and 5) For example, the exterior member 15 may be constituted by a pair of planar exterior materials 1, or may be constituted by a pair of exterior cases 10.

Example

Next, specific examples of the present invention will be described, but the present invention is not limited to these examples.

<Example 1>

A chemical conversion treatment liquid composed of phosphoric acid, polyacrylic acid (acrylic resin), chromium (III) salt compound, water and alcohol was applied to both surfaces of an aluminum foil 4 having a thickness of 40 탆 and then dried at 180 캜, To form a film. The deposition amount of chromium in this chemical conversion coating is 10 mg / m 2 per one side.

Next, biaxially stretched 6 nylon film 2 having a thickness of 25 占 퐉 was dry-laminated (bonded) to one surface of the chemically treated aluminum foil 4 through a two-liquid curing type urethane adhesive 5, .

Next, a first unleaded film (7) having a thickness of 4.5 占 퐉 and containing ethylene-propylene random copolymer, 1000 ppm of erucic acid amide and silica particles (anti-blocking agent), an ethylene-propylene block copolymer, Extruded using a T-die so as to laminate two layers of the second lead-free film 8 having a thickness of 25.5 占 퐉 and containing 200 ppm of ethylenebis oleic acid amide, (First non-stretch film layer 7 / second non-stretch film layer 8) (3) having a thickness of 30 占 퐉 was formed on the surface of the second non-stretched film layer (3) 8) face was overlaid on the other side of the aluminum foil 4 after the dry lamination through a two-liquid curing type maleic acid-modified polypropylene adhesive 6, and a rubber nip roll, a laminate roll heated to 100 ° C And by pressing it, Laminate, and after that, by 10 days-aging also (heating box) with 40 ℃, to obtain a power storage device, the casing (1) for the configuration shown in FIG.

As the two-component curing type maleic anhydride modified polypropylene adhesive, 100 parts by weight of a maleic acid-modified polypropylene (melting point 80 占 폚, acid value 10 mgKOH / g) as a main component, an isocyanurate compound of hexamethylene diisocyanate : 20 mass%) and an adhesive were used. The adhesive solution was applied to the other surface of the aluminum foil 4 so as to have a solid content of 2 g / m &lt; 2 &gt; , And then the film was overlaid on the second unstretched film layer (8) side of the sealant film (3).

<Practical Example 2>

The first undamed film (7) as the innermost layer contained 250 ppm of erucic acid amide and 750 ppm of ethylene bis-oleic acid amide as the lubricant, and the second unmodified film (8) contained 500 ppm of erucic acid amide (Refer to Table 1), the outer casing 1 for the power storage device having the structure shown in Fig. 1 was obtained.

&Lt; Example 3 >

The first lead-free film (7) as the innermost layer contained 2000 ppm of erucic acid amide and 2000 ppm of ethylene bis-oleic acid amide as the lubricant, the second lead-free film (8) contained 300 ppm of erucic acid amide as a lubricant and 200 ppm Of ethylenebis oleic acid amide (see Table 1) was used in place of the ethylenebis oleic acid amide used in Example 1, to obtain the outer casing 1 for the power storage device shown in Fig.

<Example 4>

A chemical conversion treatment liquid composed of phosphoric acid, polyacrylic acid (acrylic resin), chromium (III) salt compound, water and alcohol was applied to both surfaces of an aluminum foil 4 having a thickness of 40 탆 and then dried at 180 캜, To form a film. The deposition amount of chromium in this chemical conversion coating is 10 mg / m 2 per one side.

Next, biaxially stretched 6 nylon film 2 having a thickness of 25 占 퐉 was dry-laminated (bonded) to one surface of the chemically treated aluminum foil 4 through a two-liquid curing type urethane adhesive 5, .

Next, a sealant comprising a 30 mu m-thick first non-oriented film 7 containing an ethylene-propylene random copolymer, 1000 ppm of erucic acid amide, 500 ppm of ethylene bis-oleate amide and silica particles (anti- After the film 3 is obtained, the sealant film 3 is overlaid on the other side of the aluminum foil 4 after the dry lamination through the two-liquid curing type maleic acid-modified polypropylene adhesive 6, The laminate was sandwiched between a roll and a laminate roll heated to 100 占 폚, and was subjected to dry lamination by compression. After that, the laminate was subjected to aging at 40 占 폚 for 10 days (heating) Thereby obtaining the facer material 1.

As the two-component curing type maleic anhydride modified polypropylene adhesive, 100 parts by weight of a maleic acid-modified polypropylene (melting point 80 占 폚, acid value 10 mgKOH / g) as a main component, an isocyanurate compound of hexamethylene diisocyanate : 20 mass%) and an adhesive were used. The adhesive solution was applied to the other surface of the aluminum foil 4 so as to have a solid content of 2 g / m &lt; 2 &gt; , And then the film was overlapped with the sealant film (3).

&Lt; Example 5 >

A chemical conversion treatment liquid composed of phosphoric acid, polyacrylic acid (acrylic resin), chromium (III) salt compound, water and alcohol was applied to both surfaces of an aluminum foil 4 having a thickness of 40 탆 and then dried at 180 캜, To form a film. The deposition amount of chromium in this chemical conversion coating is 10 mg / m 2 per one side.

Next, biaxially stretched 6 nylon film 2 having a thickness of 25 占 퐉 was dry-laminated (bonded) to one surface of the chemically treated aluminum foil 4 through a two-liquid curing type urethane adhesive 5, .

Next, a first unleaded film 7 having a thickness of 4.5 占 퐉 and containing an ethylene-propylene random copolymer, 1000 ppm of erucic acid amide and 2000 ppm of silica particles (anti-blocking agent), an ethylene-propylene block copolymer, An ethylene-propylene random copolymer, 1000 ppm of an erucic acid amide, and 2000 ppm of silica particles (anti-amorphous) having a thickness of 21 mu m and containing 200 ppm of erucic acid amide and 200 ppm of ethylene bis Extruding the first lead-free film 9 having a thickness of 4.5 占 퐉, which had been formed by laminating three layers in this order, using a T-die so as to form a sealant film (First non-extensible film layer 7 / second non-extensible film layer 8 / first non-extensible film layer 9) (3) The surface of the new film layer (9) was immersed in a two-liquid curing type maleic anhydride modified poles Laminated on the other surface of the aluminum foil 4 after the dry lamination through a propylene adhesive 6 and sandwiched between a rubber nip roll and a laminate roll heated to 100 캜 to carry out dry lamination, Thereafter, by aging at 40 占 폚 for 10 days (heating), a jacket 1 for a power storage device having the structure shown in Fig. 2 was obtained.

As the two-component curing type maleic anhydride modified polypropylene adhesive, 100 parts by weight of a maleic acid-modified polypropylene (melting point 80 占 폚, acid value 10 mgKOH / g) as a main component, an isocyanurate compound of hexamethylene diisocyanate : 20 mass%) and an adhesive were used. The adhesive solution was applied to the other surface of the aluminum foil 4 so as to have a solid content of 2 g / m &lt; 2 &gt; Thereafter, the first non-stretched film layer 9 of one side of the sealant film 3 was overlapped.

&Lt; Example 6 >

The first non-tear film (7) as the innermost layer contains 200 ppm of erucic acid amide as the lubricant, the first undrawn film (9) on the metal foil layer side contains 200 ppm of the erucic acid amide as the lubricant, 2 was prepared in the same manner as in Example 5 except that the non-oriented film 8 contained 400 ppm of erucic acid amide and 400 ppm of ethylene bis-oleic acid amide as lubricants (see Table 1). Thereby obtaining an exterior member 1 for a power storage device.

&Lt; Example 7 >

The first non-tear film (7) as the innermost layer contains 1000 ppm of the erucic acid amide as the lubricant, the first undrawn film (9) on the metal foil layer side contains 1000 ppm of the erucic acid amide as the lubricant, 2 was prepared in the same manner as in Example 5 except that the non-oriented film 8 contained 2,000 ppm of erucic acid amide and 500 ppm of ethylene bis-oleic acid amide as lubricants (see Table 1). Thereby obtaining an exterior member 1 for a power storage device.

&Lt; Example 8 >

The first undrawn film (7) as the innermost layer contains 3000 ppm of erucic acid amide as the lubricant, the first undrawn film (9) on the metal foil layer side contains 3000 ppm of the erucic acid amide as the lubricant, 2 was prepared in the same manner as in Example 5 except that the non-oriented film 8 contained 2,000 ppm of erucic acid amide and 500 ppm of ethylene bis-oleic acid amide as lubricants (see Table 1). Thereby obtaining an exterior member 1 for a power storage device.

&Lt; Example 9 &

The first non-tear film (7) as the innermost layer contained 200 ppm of behenic acid amide as the lubricant, the first undrawn film (9) on the metal foil layer side contained 200 ppm of behenic acid amide as the lubricant, The same procedure as in Example 5 was repeated except that the film (8) contained 400 ppm of behenic acid amide and 400 ppm of ethylene bis-oleic acid amide as the lubricant (see Table 1) Thereby obtaining the facer material 1.

&Lt; Example 10 &

The first non-tear film (7) as the innermost layer contained 800 ppm of erucic acid amide and 200 ppm of ethylene bis (oleic acid amide) as the lubricant, and the first undrawn film (9) on the metal foil layer side contained 800 ppm of erucic acid Amide and ethylenebis oleic acid amide of 200 ppm and the second lead-free film (8) containing 2000 ppm of erucic acid amide and 200 ppm of ethylene bis-oleic acid amide as lubricants (see Table 1) In the same manner as in Example 5, the outer casing 1 for the power storage device shown in Fig. 2 was obtained.

<Example 11>

The first non-tear film (7) as the innermost layer contains 2500 ppm of erucic acid amide and 500 ppm of ethylene bis-oleic acid amide as the lubricant, and the first undrawn film (9) on the metal foil layer side contains 2500 ppm of erucic acid Amide and ethylenebis oleic acid amide of 500 ppm and the second lead-free film (8) containing 300 ppm of erucic acid amide and 500 ppm of ethylene bis-oleic acid amide as a lubricant (see Table 1) In the same manner as in Example 5, the outer casing 1 for the power storage device shown in Fig. 2 was obtained.

<Example 12>

A casing member 1 for a power storage device shown in Fig. 2 was obtained in the same manner as in Example 11 except that oleic acid amide was used in place of the erucic acid amide (see Table 1).

&Lt; Example 13 >

The first non-tear film (7) as the innermost layer contained 1000 ppm of erucic acid amide and 200 ppm of ethylene bis-oleic acid amide as the lubricant, and the first undrawn film (9) on the metal foil layer side contained 1000 ppm of erucic acid Amide and ethylenebis oleic acid amide of 200 ppm and the second lead-free film (8) containing 2000 ppm of erucic acid amide as a lubricant (see Table 1). An outer sheath 1 for a power storage device having the structure shown in Fig. 2 was obtained.

<Example 14>

The first non-tear film (7) as the innermost layer contains 2500 ppm of erucic acid amide and 500 ppm of ethylene bis-oleic acid amide as the lubricant, and the first undrawn film (9) on the metal foil layer side contains 2500 ppm of erucic acid Amide and ethylenebis oleic acid amide of 500 ppm and the second lead-free film (8) containing 800 ppm of erucic acid amide as a lubricant (see Table 1). An outer sheath 1 for a power storage device having the structure shown in Fig. 2 was obtained.

&Lt; Example 15 >

A casing member 1 for a power storage device shown in Fig. 2 was obtained in the same manner as in Example 11 except that a behenic acid amide was used in place of the erucic acid amide (see Table 1).

&Lt; Example 16 >

A jacket 1 for a power storage device having the structure shown in Fig. 2 was obtained in the same manner as in Example 6 except that the composition was an ethylenebisstearic acid amide (instead of ethylenebisstearic acid amide) (see Table 1).

<Example 17>

A casing member 1 for a power storage device having the structure shown in Fig. 2 was obtained in the same manner as in Example 14, except that a composition using ethylene bisstearic acid amide was used in place of the ethylene bis-oleic acid amide (see Table 1).

&Lt; Example 18 >

(See Table 1) except that the second non-tear film 8 contained 300 ppm of erucic acid amide and 500 ppm of ethylene bisstearic acid amide as lubricants (see Table 1) Thereby obtaining the outer casing 1 for the power storage device.

&Lt; Example 19 >

The first undrawn film (7) as the innermost layer contains 3000 ppm of erucic acid amide as the lubricant, the first undrawn film (9) on the metal foil layer side contains 3000 ppm of the erucic acid amide as the lubricant, The same procedure as in Example 5 was repeated except that the non-oriented film 8 contained 400 ppm of erucic acid amide and 400 ppm of ethylene bis-oleic acid amide as lubricants (see Table 2) Thereby obtaining an exterior member 1 for a power storage device.

&Lt; Example 20 >

The first lead-free film (7) as the innermost layer contained 200 ppm of stearic acid amide as a lubricant, the first lead-free film (9) on the metal foil layer side contained 200 ppm of stearamide as a lubricant, and the second lead- 8) An outer casing 1 for power storage device 1 shown in Fig. 2 was prepared in the same manner as in Example 5, except that the composition contained 400 ppm of stearic acid amide and 400 ppm of ethylene bis-oleic acid amide as the lubricant (see Table 2) ).

&Lt; Example 21 >

The first non-tear film (7) as the innermost layer contained 1000 ppm of erucic acid amide and 100 ppm of ethylene bis-oleic acid amide as the lubricant, and the first undrawn film (9) on the metal foil layer side contained 1000 ppm of erucic acid Amide and ethylenebis oleic acid amide of 100 ppm and the second lead-free film (8) containing 2000 ppm of erucic acid amide as a lubricant (see Table 2) An outer sheath 1 for a power storage device having the structure shown in Fig. 2 was obtained.

&Lt; Example 22 >

The first non-tear film (7) as the innermost layer contained 1000 ppm of erucic acid amide and 2000 ppm of ethylene bis-oleic acid amide as the lubricant, and the first undrawn film (9) on the metal foil layer side contained 1000 ppm of erucic acid Amide and 2000 ppm of ethylene bis-oleic acid amide, and the second lead-free film 8 contained 800 ppm of erucic acid amide as a lubricant (see Table 2). An outer sheath 1 for a power storage device having the structure shown in Fig. 2 was obtained.

&Lt; Example 23 >

The first non-tear film (7) as the innermost layer contained 1000 ppm of erucic acid amide and 100 ppm of ethylene bis-oleic acid amide as the lubricant, and the first undrawn film (9) on the metal foil layer side contained 1000 ppm of erucic acid Amide and ethylenebis oleic acid amide of 100 ppm and the second lead-free film (8) containing 2000 ppm of erucic acid amide and 100 ppm of ethylene bis-oleic acid amide as a lubricant (see Table 2) In the same manner as in Example 5, the outer casing 1 for the power storage device shown in Fig. 2 was obtained.

&Lt; Example 24 >

The first non-tear film (7) as the innermost layer contains 1000 ppm of erucic acid amide and 1500 ppm of ethylene bis-oleic acid amide as the lubricant, and the first undrawn film (9) on the metal foil layer side contains 1000 ppm of erucic acid Amide and 1500 ppm of ethylene bis-oleic acid amide, and the second lead-free film (8) contains 2000 ppm of erucic acid amide and 1000 ppm of ethylene bis-oleic acid amide as lubricants (see Table 2) In the same manner as in Example 5, the outer casing 1 for the power storage device shown in Fig. 2 was obtained.

&Lt; Example 25 >

The first undamed film (7) as the innermost layer contained 1000 ppm of erucic acid amide as the lubricant, the second undamned film (8) contained 2000 ppm of erucic acid amide and 100 ppm of ethylene bis (Refer to Table 2), the outer casing 1 for the power storage device having the structure shown in Fig. 1 was obtained.

&Lt; Example 26 >

(7) containing 1000 ppm of behenic acid amide as the lubricant and the second lead-free film (8) containing 300 ppm of behenic acid amide and 200 ppm of ethylene bis (See Table 2), the outer casing 1 for the power storage device having the structure shown in Fig. 1 was obtained.

&Lt; Example 27 >

The first lead-free film (7), which is the innermost layer, contains 1000 ppm of an elastomeric amide and 100 ppm of ethylenebis oleic acid amide as a lubricant, and the second lead-free film (8) contains 2,000 ppm of an erucic acid amide (Refer to Table 2), the outer casing 1 for the power storage device having the structure shown in Fig. 1 was obtained.

&Lt; Example 28 >

The first undamed film (7), which is the innermost layer, contains 1000 ppm of an erucic acid amide and 1500 ppm of ethylene bis-oleic acid amide as a lubricant, and the second undamned film (8) contains 2000 ppm of an erucic acid amide (Refer to Table 2), the outer casing 1 for the power storage device having the structure shown in Fig. 1 was obtained.

&Lt; Example 29 >

The first non-tear film (7) as the innermost layer contained 2000 ppm of erucic acid amide and 2000 ppm of ethylene bis-oleic acid amide as the lubricant, and the first undrawn film (9) on the metal foil layer side contained 2000 ppm of erucic acid Amide and 2000 ppm ethylenebis oleic acid amide and that the second lead-free film 8 contained 500 ppm of erucic acid amide as a lubricant (see Table 2). An outer sheath 1 for a power storage device having the structure shown in Fig. 2 was obtained.

&Lt; Example 30 >

The first non-tear film (7) as the innermost layer contained 1000 ppm of erucic acid amide and 100 ppm of m-xylylene bisstearic acid amide as the lubricant, and the first non-tear film (9) on the metal foil layer side contained 1000 ppm Of n-xylylene bisstearic acid amide and 100 ppm of m-xylylene bisstearic acid amide, and the second lead-free film (8) contains 2000 ppm of erucic acid amide and 100 ppm of m-xylylene bisstearic acid amide (See Table 2) was used to obtain the outer casing 1 for the power storage device shown in Fig.

&Lt; Example 31 >

The first non-oriented film (7) as the innermost layer contained 2000 ppm of stearic acid amide and 1000 ppm of m-xylylene bisstearic acid amide as the lubricant, and the first unstretched film (9) on the metal foil layer side contained 2000 ppm of stearic acid Amide and the second lead-free film (8) contained 500 ppm of stearic acid amide and 1000 ppm of m-xylylene bisstearic acid amide as lubricants (see Table 2). Thus, the outer casing 1 for the power storage device having the structure shown in Fig. 2 was obtained.

&Lt; Example 32 >

The first non-tear film (7) as the innermost layer contained 6,000 ppm of erucic acid amide and 500 ppm of ethylene bis-oleic acid amide as the lubricant, and the first undrawn film (9) on the metal foil layer side contained 6,000 ppm of erucic acid Amide and ethylenebis oleic acid amide of 500 ppm and the second lead-free film (8) containing 300 ppm of erucic acid amide and 500 ppm of ethylene bis-oleic acid amide as the lubricant (see Table 2) In the same manner as in Example 5, the outer casing 1 for the power storage device shown in Fig. 2 was obtained.

&Lt; Example 33 >

The first non-tear film (7) as the innermost layer contained 1000 ppm of the erucic acid amide and 500 ppm of the ethylene bis-oleic acid amide as the lubricant, and the first undrawn film (9) on the metal foil layer side contained 1000 ppm of erucic acid Amide and ethylenebis oleic acid amide of 500 ppm and the second lead-free film (8) containing 5000 ppm of erucic acid amide and 500 ppm of ethylene bis-oleic acid amide as lubricants (see Table 2) In the same manner as in Example 5, the outer casing 1 for the power storage device shown in Fig. 2 was obtained.

<Comparative Example 1>

(See Table 3) in which the first undamed new film 7 as the innermost layer contains 1000 ppm of the erucic acid amide as the lubricant and the second unmodified film 8 contains 500 ppm of the erucic acid amide as the lubricant, , A casing for a power storage device was obtained in the same manner as in Example 1.

<Comparative Example 2>

The first non-tear film (7) as the innermost layer contains 1000 ppm of the erucic acid amide as the lubricant, the first undrawn film (9) on the metal foil layer side contains 1000 ppm of the erucic acid amide as the lubricant, A casing for a power storage device was obtained in the same manner as in Example 5 except that the non-oriented film (8) contained 500 ppm of erucic acid amide as a lubricant (see Table 3).

<Comparative Example 3>

The first non-tear film (7) as the innermost layer contains 200 ppm of erucic acid amide as the lubricant, the first undrawn film (9) on the metal foil layer side contains 200 ppm of the erucic acid amide as the lubricant, A casing for electric storage devices was obtained in the same manner as in Example 5 except that the non-oriented film (8) contained 800 ppm of erucic acid amide as a lubricant (see Table 3).

<Comparative Example 4>

The first undrawn film (7) as the innermost layer contains 3000 ppm of erucic acid amide as the lubricant, the first undrawn film (9) on the metal foil layer side contains 3000 ppm of the erucic acid amide as the lubricant, A casing for electric storage devices was obtained in the same manner as in Example 5 except that the non-oriented film (8) contained 800 ppm of erucic acid amide as a lubricant (see Table 3).

<Comparative Example 5>

The first non-tear film (7) as the innermost layer contains 200 ppm of erucic acid amide as the lubricant, the first undrawn film (9) on the metal foil layer side contains 200 ppm of the erucic acid amide as the lubricant, A casing for electric storage devices was obtained in the same manner as in Example 5 except that the non-oriented film (8) contained 1,500 ppm of erucic acid amide as a lubricant (see Table 3).

<Comparative Example 6>

(See Table 3) in which the first undamed new film 7 as the innermost layer contained 250 ppm of the erucic acid amide as the lubricant and the second unmodified film 8 contained 100 ppm of the erucic acid amide as the lubricant, , A casing for a power storage device was obtained in the same manner as in Example 1.

<Comparative Example 7>

The first non-tear film (7) as the innermost layer contains 250 ppm of erucic acid amide as the lubricant, the first non-tear film (9) on the metal foil layer side contains 250 ppm of the erucic acid amide as the lubricant, A casing for a power storage device was obtained in the same manner as in Example 5 except that the non-oriented film (8) contained 100 ppm of erucic acid amide as a lubricant (see Table 3).

<Comparative Example 8>

The first non-tear film (7) as the innermost layer contains 200 ppm of erucic acid amide as the lubricant, the first undrawn film (9) on the metal foil layer side contains 200 ppm of the erucic acid amide as the lubricant, A casing for a power storage device was obtained in the same manner as in Example 5 except that the non-oriented film (8) contained 7000 ppm of erucic acid amide as a lubricant (see Table 3).

<Comparative Example 9>

The first undamed film (7) as the innermost layer contains 3500 ppm of erucic acid amide as the lubricant, the first undamed film (9) on the metal foil layer side contains 3500 ppm of erucic acid amide as the lubricant, A casing for a power storage device was obtained in the same manner as in Example 5 except that the non-oriented film (8) contained 21000 ppm of erucic acid amide as an activator (see Table 3).

<Comparative Example 10>

The first undamed film (7) as the innermost layer contains 3500 ppm of erucic acid amide as the lubricant, the first undamed film (9) on the metal foil layer side contains 3500 ppm of erucic acid amide as the lubricant, A casing for a power storage device was obtained in the same manner as in Example 5 except that the non-oriented film (8) contained 100 ppm of erucic acid amide as a lubricant (see Table 3).

<Comparative Example 11>

(See Table 3) in which the first undamed film (7) as the innermost layer contains 4000 ppm of erucic acid amide as the lubricant and the second lead-free film (8) contains 500 ppm of erucic acid amide as a lubricant. , A casing for a power storage device was obtained in the same manner as in Example 1.

<Comparative Example 12>

Wherein the first undamed new film (7) as the innermost layer contains 4000 ppm of erucic acid amide as the lubricant, the first undamed film (9) on the metal foil layer side contains 4000 ppm of erucic acid amide as the lubricant, A casing for a power storage device was obtained in the same manner as in Example 5 except that the non-oriented film (8) contained 500 ppm of erucic acid amide as a lubricant (see Table 3).

<Comparative Example 13>

The first non-tear film (7) as the innermost layer contains 4000 ppm of oleic acid amide as the lubricant, the first non-tear film (9) on the metal foil layer side contains 4000 ppm of oleic acid amide as the lubricant, 8) A casing for a power storage device was obtained in the same manner as in Example 5 except that the composition containing 500 ppm oleic acid amide as the lubricant (see Table 3) was used.

<Comparative Example 14>

Wherein the first undrawn film (7) as the innermost layer contains 4000 ppm of behenic acid amide as the lubricant, the first undrawn film (9) on the metal foil layer side contains 4000 ppm of behenic acid amide as the lubricant, and the second undrawn film A casing for a power storage device was obtained in the same manner as in Example 5 except that the film (8) contained 500 ppm of behenic acid amide as a lubricant (see Table 3).

<Comparative Example 15>

A casing for a power storage device was obtained in the same manner as in Example 4 except that the innermost layer of the first lead-free film (7) contained 1000 ppm of erucic acid amide as a lubricant (see Table 3).

The exterior materials for each of the power storage devices obtained as described above were evaluated based on the following evaluation methods. The results are shown in Table 4. The coefficient of dynamic friction shown in Table 4 is a coefficient of dynamic friction measured with respect to the surface 7a of the innermost layer of each outer sheath in accordance with JIS K7125-1995. In Tables 1 to 3, "EBOA" is an abbreviation of ethylene bis oleic acid amide, "EBSA" is abbreviation of ethylene bisstearic acid amide, and "KBSA" is abbreviation of m-xylylene bisstearic acid amide .

&Lt; Evaluation method of lubricant amount present on the surface of the innermost layer of exterior material >

Two rectangular test pieces of 100 mm long and 100 mm wide were cut out from the casing for each power storage device. The two test pieces were stacked and heat-sealed between the circumferential portions of the sealant layers at a heat chamber temperature of 200 ° C, Respectively. 1 ml of acetone was poured into the internal space of the pouch and acetone was left in contact with the surface 7a of the innermost layer 7 of the sealant layer for 3 minutes and acetone in the pouch was withdrawn. The amount of lubricant contained in the withdrawn liquid was measured and analyzed by gas chromatography to determine the amount of lubricant (占 퐂 / cm2) existing on the surface of the innermost layer of the casing. That is, the amount of lubricant per 1 cm 2 of the surface of the innermost layer was determined.

<Moldability Evaluation Method>

Deep drawing one-stage molding was performed on the exterior material using the straight mold of the molding depth-free form under the following molding conditions, and each molding depth (9 mm, 8 mm, 7 mm, 6 mm, 5 mm, Mm, 2 mm), and the maximum molding depth (mm) capable of performing good molding without causing any pinhole at the corner portion was investigated. The determination was made such that the maximum molding depth was 5 mm or more, &quot;? &Quot;, the maximum molding depth was 2 mm or more and less than 5 mm was &quot; DELTA &quot;, and the maximum molding depth was less than 2 mm. The results are shown in Table 4. The presence or absence of pinholes was examined by visually observing the presence or absence of the transmitted light passing through the pinhole.

(Molding conditions)

Molding mold ... Punch: 33.3 mm x 53.9 mm, die: 80 mm x 120 mm, corner R: 2 mm, punch R: 1.3 mm, die R:

Wrinkle pushing pressure ... Gauge pressure: 0.475 MPa, actual pressure (calculated value): 0.7 MPa

material … SC (carbon steel) material, Punch R chrome plating only.

<Method of evaluating the presence /

A rectangular test piece having a length of 600 mm and a width of 100 mm was cut out from the outer sheath for each power storage device. The obtained test piece was placed on the test bench with the inner sealant layer 3 surface (that is, the innermost layer surface 7a) (Weight: 1.3 kg, ground surface size: 55 mm × 50 mm) made of black and having a surface blackened by winding black waste on the upper surface of the test piece The weight was pulled in a horizontal direction parallel to the upper surface of the test piece in a stretched state at a tensile speed of 4 cm / sec to stretch over a length of 400 mm in contact with the upper surface of the test piece. (Black) of the contact surface of the weights after the tensile movement was visually observed, and those in which white powder was remarkably formed on the surface of wax (black) were evaluated as &quot; X &quot;, and those in which only white powder was slightly developed were evaluated as &quot;Quot;, and &quot; no &quot;, or &quot; no &quot; As the black wes, "static electricity removing sheet SSD2525 3100" manufactured by TRUSCO Co., Ltd. was used.

<Overall judgment>

A &quot; in the comprehensive judgment, and the evaluation of moldability and the presence or absence of white powder were evaluated as &quot; DELTA &quot; and the other was evaluated as &quot; ? &Quot;, and &quot;? &Quot;, and at least one of the formability evaluation and the presence / absence of white matter was evaluated as &quot; x &quot; &Quot; &quot; or &quot; DELTA &quot; in the comprehensive judgment.

As apparent from Table 1, the outer sheath for electrical storage devices of Examples 1 to 33 constructed using the sealant film of the present invention was excellent in moldability and was hardly exposed to the surface of the casing.

On the other hand, in Comparative Examples 1 to 3, 5 to 8, and 10 deviating from the scope of the present invention, the moldability of the exterior material was not good, and Comparative Examples 3, 4, 9 and 11 to 15, white powder is remarkably formed on the surface of the casing. That is, in Comparative Examples 1 to 15 deviating from the scope of the present invention, the overall judgment was "x".

[Industrial Availability]

As a concrete example, the exterior material for a power storage device manufactured using the sealant film according to the present invention and the exterior material for a power storage device according to the present invention are, for example,

· Power storage devices such as lithium secondary batteries (lithium ion batteries, lithium polymer batteries, etc.)

· Lithium ion capacitor

· Electric double layer condenser

And the like. Further, the electrical storage device according to the present invention includes all the solid-state batteries in addition to the above-described electrical storage device.

This application is a continuation-in-part of PCT Application No. 2016-120918, filed on June 17, 2016, which is incorporated herein by reference in its entirety.

The terms and explanations used here are used for explaining the embodiments of the present invention, and the present invention is not limited thereto. It is intended that the present invention not be limited by any of the details of the description provided herein except as defined in the appended claims.

1: Outer material for power storage device
2: Heat resistant resin layer (outer layer)
3: Inner sealant layer (sealant film) (inner layer)
4: metal foil layer
5: Second adhesive layer (outer adhesive layer)
6: First adhesive layer (inner adhesive layer)
7: First undrawn film layer (innermost layer)
7a: the surface of the first non-stretched film layer (the surface of the innermost layer of the casing)
8: second undrawn film layer
9: first non-oriented film layer (metal foil layer side)
10: External case for power storage device (molded product)
15: outer member
30: Power storage device
31: Power storage device main body part

Claims (19)

Propylene-based polymer,
At least one first lubricant selected from the group consisting of saturated fatty acid amides and unsaturated fatty acid amides,
At least one non-oriented film layer comprising at least one second lubricant selected from the group consisting of fatty acid bisamides and aromatic bisamides, is contained in the sealant film. Propylene-based polymer,
At least one first lubricant selected from the group consisting of saturated fatty acid amides and unsaturated fatty acid amides,
A non-oriented film layer comprising at least one second lubricant selected from the group consisting of a fatty acid bisamide and an aromatic bisamide. And a second non-stretched film layer laminated on one surface of the first non-stretched film layer,
The first non-extension film layer forms the innermost layer of the casing,
Wherein the first non-stretched film layer comprises a random copolymer containing a copolymerization component other than propylene and propylene as a copolymerization component,
Wherein the second non-stretched film layer comprises a block copolymer containing a copolymerization component other than propylene and propylene as a copolymerization component,
Wherein the lubricant in the first non-tear film layer and / or the lubricant in the second non-tear film layer comprises at least one first lubricant selected from the group consisting of a saturated fatty acid amide and an unsaturated fatty acid amide, And at least one second lubricant selected from the group consisting of bisamide and bisamide. The method of claim 3,
Wherein the ratio of the thickness of the first non-extension film layer to the thickness of the second non-extension film layer is 5 To 90/95/10. &Lt; / RTI &gt; A second non-rolled film layer laminated on one surface of the second non-rolled film layer; and a second non-rolled film layer laminated on the other surface of the second non-rolled film layer, And a laminated body of three or more layers,
The first non-stretchable film layer of either one of them forms the innermost layer of the casing,
Wherein the first non-stretched film layer contains a random copolymer containing a copolymerization component other than propylene and propylene as a copolymerization component and a lubricant,
Wherein the second non-stretched film layer comprises a block copolymer containing a copolymerization component other than propylene and propylene as a copolymerization component,
Wherein the lubricant in the first non-tear film layer forming the innermost layer of the casing and / or the lubricant in the second non-tear film layer is at least one first lubricant selected from the group consisting of a saturated fatty acid amide and an unsaturated fatty acid amide And at least one second lubricant selected from the group consisting of fatty acid bisamides and aromatic bisamides. 2. A sealant film for a casing of a battery device, comprising: 6. The method of claim 5,
Wherein the first non-rolled film layer and the second non-rolled film layer are laminated on both sides of the second non-rolled film layer, wherein the ratio of the thickness of the third non-rolled film layer / Wherein the thickness of the first non-stretched film layer / the thickness of the first non-stretched film layer is in the range of 5 to 45/90 to 10/5 to 45. 7. The method according to any one of claims 3 to 6,
Wherein the total content concentration of all the lubricants contained in the first non-tear film layer is from 200 ppm to 7000 ppm, and the sum of the contained concentrations of all the lubricants contained in the second non-extruded film layer is from 500 ppm to 7000 ppm. Sealant film for exterior of device. 7. The method according to any one of claims 3 to 6,
Wherein the concentration of the lubricant in the second non-tear film layer is 0.1 to 10 times the concentration of the lubricant in the first non-tear film layer forming the innermost layer of the casing. . 7. The method according to any one of claims 1 to 6,
Wherein the ratio of the content of the second lubricant to the total value of the content concentrations of all the lubricants in the layer containing the second lubricant is 5% to 90%. An outer casing for an electric storage device, comprising an inner sealant layer made of the sealant film according to any one of claims 1 to 9 and a metal foil layer laminated on one surface side of the inner sealant layer. A heat-resistant resin layer as an outer layer, an inner sealant layer comprising a sealant film as described in any one of claims 1 to 9, and a metal foil layer disposed between the two layers. The method according to claim 10 or 11,
Wherein the amount of lubricant present on the surface of the first non-tear film layer forming the innermost layer of the casing is in the range of 0.1 占 퐂 / cm2 to 1.0 占 퐂 / cm2. The method according to claim 10 or 11,
Wherein a coefficient of dynamic friction of the surface of the first non-extensible film layer forming the innermost layer of the casing material is 0.10 to 0.50. A method for producing a laminated body, comprising the steps of: preparing a laminate obtained by laminating a sealant film according to any one of claims 1 to 9 and a metal foil through a first adhesive;
And an aging step of subjecting the laminate to a heat treatment to obtain an exterior material for a power storage device. 15. The method of claim 14,
Wherein the first adhesive is a thermosetting adhesive. A heat-resistant resin film is laminated on one surface of a metal foil through a second adhesive, and a sealant film according to any one of claims 1 to 9 is laminated on the other surface of the metal foil through a first adhesive agent A step of preparing a laminate,
And an aging step of subjecting the laminate to a heat treatment to obtain an exterior material for a power storage device. 17. The method of claim 16,
Wherein the first adhesive is a thermosetting adhesive, and the second adhesive is a thermosetting adhesive. 18. The method according to any one of claims 14 to 17,
Characterized in that the amount of lubricant present on the surface of the first non-tear film layer forming the innermost layer of the jacket for a power storage device obtained by the heat treatment is in the range of 0.1 μg / cm 2 to 1.0 g / Gt; 18. The method according to claim 16 or 17,
In the aging step, the laminated body is subjected to the heat treatment in a state in which the surface of the heat-resistant resin film and the surface of the sealant film are in contact with each other, whereby the adhesion amount of the lubricant on the surface of the heat- To obtain an exterior material for a power storage device in a range of 0.1 to 0.8 mu g / cm &lt; 2 &gt;.

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