Abstract: A terminal resin film of at least seven layers, with at least a layer A, a layer B, a layer C, and a layer D, and a structure being layer A, the layer B, the layer A, and the layer C or the layer D; or, the structure being layer A, the layer B, and the layer A, and Layer A: A layer formed from a resin composition including an acid-modified polyolefin resin and having an MFR of 2.0 to 50 g/10 mins; Layer B: A layer formed from a resin composition including a polyolefin resin and having an MFR of 0.05 g/10 mins or more and less than 2.0 g/10 mins; Layer C: A layer formed from a resin composition including an unmodified polyolefin resin and having an MFR of 0.05 to 50 g/10 mins; and, Layer D: An adhesive layer including a resin having a cross-linked structure.

Abstract: A resin film for a terminal which includes at least three layers, which define a first outer surface and a second outer surface of the resin film, the first outer surface being opposed to the second outer surface; a first adhesive layer which is one of the three layers and is arranged to form the first outer surface of the resin film; a second adhesive layer which is one of the three layers and is arranged to form the second outer surface of the resin film; and an insulating layer which is arranged between the first adhesive layer and the second adhesive layer. The first adhesive layer contains first polypropylene and second polypropylene. The first polypropylene has a long-chain branched structure. The second polypropylene has no long-chain branched structure and has a melting point of 80° C. to 155° C.

Abstract: A power storage device packaging material including a substrate layer, a barrier layer, a thermal adhesive resin layer or an adhesive layer, and a sealant layer that are laminated in this order, wherein in a case where (I) represents the sealant layer or the thermal adhesive resin layer and the sealant layer and (II) represents the substrate layer, a loop stiffness value of (I) is 10 mN or more and 80 mN or less, a loop stiffness value of (II) is 2 mN or more and 20 mN or less, a ratio (I/II) between the loop stiffness value of (I) and the loop stiffness value of (II) is 1.0 or more and 15 or less, and a ratio (I/II) between a thickness of (I) and a thickness of (II) is 1.0 or more and 8.0 or less.

Abstract: The disclosure provides a packaging material for a power storage device including at least a substrate layer, a barrier layer, an adhesive layer, and a sealant layer in this order, wherein the hydrogen sulfide gas permeability at 100° C. in the thickness direction of the sealant layer and the adhesive layer is 3.7×10?15 to 1.8×10?12 [(mol·m)/(m2·s·Pa)].

Abstract: A packaging material for a power storage device includes at least a substrate layer, a barrier layer, an adhesive layer, and a sealant layer in this order. In the packaging material, at least either of the adhesive layer and the sealant layer includes a filler-containing layer that contains a filler containing layered clay minerals. The filler-containing layer may be obtained using a resin composition containing a resin and a filler. Of the adhesive layer and the sealant layer, the adhesive layer may include the filler-containing layer, and the resin in the resin composition may comprise a modified polyolefin resin.

Abstract: A power storage device packaging material is used for a power storage device. The power storage device packaging material at least contains a substrate layer; a barrier layer; and a sealant layer in this order, wherein the sealant layer has an oxygen transmission rate at 100° C. of 1.0×10?15 to 1.0×10?13 [(mol·m)/(m2·s·Pa)].

Abstract: A packaging material for a power storage device, comprising at least: a substrate layer; a metallic foil layer with an anti-corrosion treatment layer being disposed on one face or both faces thereof; and a sealant layer in this order, wherein a sealant layer includes a resin layer containing a polypropylene-based resin (A) and an incompatible component (B) incompatible with a polypropylene-based resin (A), and as for loss tangent tan ? obtained by dynamic viscoelasticity measurement at a frequency of 1.0 Hz, the sealant layer has a maximal value of tan ? at ?30 to 30° C., and in addition, a ratio (II/I) of the maximal value (II) of tan ? at ?30 to 30° C. to a value (1) of tan ? at ?50° C. is 2.50 or more.

Abstract: A packaging material for a power storage device includes at least a substrate layer, a barrier layer, and a sealant layer in this order, in which the sealant layer contains a polypropylene resin and an incompatible component that is incompatible with the polypropylene resin, and, when a cross section of the sealant layer taken along a TD direction is observed, an area proportion S1 of the incompatible component (B) in the cross section is 10 to 50%.

Abstract: A power storage device terminal film for covering an outer peripheral surface of part of a metal terminal constituting a power storage device, the power storage device terminal film containing polypropylene and polyethylene, wherein the terminal film has a first surface satisfying Formula (A1): 0.3?a2/a1?6.2(A1), where a1 represents an absorption intensity at a wave number of 720 cm?1 measured by attenuated total reflection infrared spectroscopy, and a2 represents an absorption intensity at a wave number of 841 cm?1 measured by attenuated total reflection infrared spectroscopy.

Abstract: A power storage device packaging material according to an aspect of the present disclosure includes at least a substrate layer, a first adhesive layer, a primer layer, a barrier layer, a second adhesive layer or an adhesive resin layer, and a sealant layer in this order, wherein by X-ray photoelectron spectroscopy analysis of a surface of the primer layer facing the first adhesive layer, a peak P (Si) derived from Si 2p3/2 is detected in a range of 99 eV to 104 eV, and a peak P(N) derived from N1s is detected in a range of 396 eV to 404 eV, and an area ratio S (Si)/S (N) between a peak area S (Si) of the peak P (Si) and a peak area S (N) of the peak P(N) is 2.0 or less.

Abstract: A tab sealant disposed covering at least a part of an outer surface of metal terminals of a power storage device, the tab sealant including: a first sealant layer disposed facing the metal terminal; a high-melting-point layer containing a polyolefin resin; and a second sealant layer, which are laminated in this order, wherein each of the first sealant layer and the second sealant layer includes a low-melting-point layer containing acid-modified polyolefin resin and a medium-melting-point layer disposed between the low-melting-point layer and the high-melting-point layer, the low-melting-point layer has a melting point of 100° ° C.to 135° ° C., the high-melting-point layer has a melting point of 140° ° C.to 170° C., and the melting point of the medium-melting-point layer is higher than the melting point of the low-melting-point layer by 10° C. or more and lower than the melting point of the high-melting-point layer by 10° C. or more.

Abstract: A power storage device packaging material includes at least a substrate layer, a metal foil layer having an anticorrosion treatment layer on one or both sides thereof, and a sealant layer in this order. In the packaging material, the sealant layer includes a propylene-based branched polymer-containing layer that contains a propylene-based branched polymer having branched chains.

Abstract: A terminal resin film of at least seven layers, with at least a layer A, a layer B, a layer C, and a layer D, and a structure being layer A, the layer B, the layer A, and the layer C or the layer D; or, the structure being layer A, the layer B, and the layer A, and Layer A: A layer formed from a resin composition including an acid-modified polyolefin resin and having an MFR of 2.0 to 50 g/10 mins; Layer B: A layer formed from a resin composition including a polyolefin resin and having an MFR of 0.05 g/10 mins or more and less than 2.0 g/10 mins; Layer C: A layer formed from a resin composition including an unmodified polyolefin resin and having an MFR of 0.05 to 50 g/10 mins; and, Layer D: An adhesive layer including a resin having a cross-linked structure.

Abstract: A resin film for a terminal which includes at least three layers, which define a first outer surface and a second outer surface of the resin film, the first outer surface being opposed to the second outer surface; a first adhesive layer which is one of the three layers and is arranged to form the first outer surface of the resin film; a second adhesive layer which is one of the three layers and is arranged to form the second outer surface of the resin film; and an insulating layer which is arranged between the first adhesive layer and the second adhesive layer. The first adhesive layer contains first polypropylene and second polypropylene. The first polypropylene has a long-chain branched structure. The second polypropylene has no long-chain branched structure and has a melting point of 80° C. to 155° C.

Abstract: A packaging material for a power storage device, comprising at least: a substrate layer; a metallic foil layer with an anti-corrosion treatment layer being disposed on one face or both faces thereof; and a sealant layer in this order, wherein the sealant layer includes a polypropylene-based resin (A) and 1 to 40% by mass of incompatible component (B), and maximum seal strength SM in an adhered portion resulting from adhesion by heat-sealing the packaging material is 35 N/15 mm or more, and in addition, the packaging material for a power storage device satisfies the following requirements (1) or (2): (1) a ratio SS/SM of seal strength SS to maximum seal strength SM in a stable range is 0.3 or more; (2) a ratio SA/SM of average seal strength SA to maximum seal strength SM is 0.3 or more.

Abstract: A resin film for a terminal according to one aspect of the present disclosure is for covering the outer peripheral surface of part of a metal terminal that constitutes a power storage device, and includes a resin layer containing: a polyethylene; and a compatibilizer having a region which is compatible with the polyethylene and a region which is compatible with polypropylene.

Abstract: A packaging material for a power storage device and a power storage device using the same, a method of producing a packaging material for a power storage device, and a method of selecting a sealant film used as a sealant layer in the packaging material for a power storage device are provided.

Abstract: A terminal-coating resin film according to one aspect of the present disclosure is so disposed in a power storage device including a power storage device body and a terminal electrically connected to the power storage device body as to cover an outer peripheral surface of part of the terminal. The terminal-coating resin film has a single-layer structure or a multilayer structure and includes a resin layer having at least one secondary dispersion peak ? within a range of ?130° C. to ?50° C. in a profile of a loss tangent tan ? obtained by dynamic viscoelastic measurement under a condition of 1.0 Hz. The terminal-coating film is comprised of a resin composition including a first resin including polyolefin and a second resin including at least one resin selected from polyester, polyamide, polycarbonate, and polyphenylene ether.

Abstract: A packaging material for a power storage device, the packaging material being prepared by laminating at least a substrate layer, a metallic foil layer with an anti-corrosion treatment layer being disposed on one face or both faces thereof, and a sealant layer in this order, wherein the sealant layer comprises an associative organic compound having two or more associative functional groups and a hydrocarbon group having 4 or more carbon atoms.

Abstract: An exterior material for a lithium ion battery comprising at least a substrate layer, a metal foil layer, and a sealant layer in that order, wherein the sealant layer comprises an anionic functional group-containing layer containing a compound having an anionic functional group, and the concentration of the anionic functional group contained in the anionic functional group-containing layer is about 1.0 mass % or more based on the total amount of the components constituting the anionic functional group-containing layer.