Abstract: The specification discloses a film for a cell pouch and a storage method of the film. According to this disclosure, the efficiency of a slip agent may be improved by controlling the storage temperature after manufacturing the film for a cell pouch. The phenomenon of excessive leakage of the slip agent on the surface is minimized while comprising a small amount of the slip agent. Therefore, the film according to the present disclosure may exhibit excellent formability and at the same time prevents excessive leakage of the slip agent, thereby preventing a decrease in process efficiency due to the slip agent.

Abstract: Disclosed are a film for cell pouch, that may minimize the winding tension applied to the metal layer and the film for the cell pouch, thereby minimizing the mechanical deformation of the metal layer, minimizing the deformation of a film laminate for cell pouch, and that may improve tensile strength and formability according to the improvement in the manufacturing process, and improving curl characteristics before and after molding, according to an improvement in the manufacturing process; a cell pouch including the same; and a method for manufacturing the said film for cell pouch.

Abstract: The present disclosure is directed to a film for a cell pouch and a manufacturing method thereof. A cell pouch film and a manufacturing method thereof according to an example embodiment of the present disclosure has good mechanical strength, low deviation in mechanical strength due to low stress on the film, and good formability.

Abstract: Disclosed are a cell pouch film having improved formability, a method for preparing the same, and a secondary battery using the same. The cell pouch film can suppress the occurrence of cracks in edge portion generated during deep molding, allowing the edge portion to be formed thickly, thereby exhibiting excellent deep molding properties. Since such a cell pouch film can improve the energy density of a secondary battery, it is particularly useful as a medium to large-sized cell pouch for electric vehicles, energy storage devices, and the like.

Abstract: Proposed are a method and apparatus for manufacturing a laminate film for a cell-type battery pouch. More specifically, the present disclosure relates to a technology of manufacturing a pouch film used to manufacture a pouch-type battery. Specifically, when manufacturing a laminate film for a pouch using a dry lamination process, induction heating rolls that are controllable in heat generation thereof are used to perform a post thermal treatment process after performing a lamination process using thermal rolls. The method and apparatus can reduce an aging period that is required to improve the physical properties of a manufactured pouch or can improve the physical properties of a manufactured pouch without an aging process.

Abstract: Provided is a secondary battery pouch film in which at least an outer layer, a barrier layer, and a sealant layer are structured in that order, wherein the outer layer includes nylon and polyethylene terephthalate films, the barrier layer is made of aluminum, and the Poisson's ratio is 0.4 to 0.5, a method for preparing the pouch film, a secondary battery using the same, and a method for manufacturing the secondary battery. The cracks at the edge that occur during deep forming of the secondary battery pouch film may be suppressed, and the edge may be formed thick, thereby providing excellent high formability. Since the secondary battery pouch film is capable of improving the energy density of secondary batteries, it is particularly useful as a medium to large-sized secondary battery pouch film for electric vehicles or energy storage devices.

Abstract: Disclosed is a secondary electrode pouch film comprising at least an outer layer, a barrier layer, and a sealant layer laminated sequentially, wherein the sealant layer thickness T1 and T2 measured according to a tear test method satisfy 0.6<T1/T2<0.85 or 30 ?m<T2?T1<85 ?m, respectively, a secondary battery using the same, and a method for preparing the same. The pouch film has excellent sealing strength at ambient temperature and high temperature, as well as excellent sealing strength maintenance characteristics at ambient temperature, and especially excellent sealing strength maintenance characteristics at high temperature.

Abstract: Disclosed is a cell pouch film, comprising at least an outer layer, a barrier layer, and a sealant layer structured in that order, wherein the sealant layer is formed by extrusion on the barrier layer, wherein the sealant layer has a glass transition temperature (Tg) of ?10° C. to ?7° C., and wherein a crystallinity of the sealant layer is 28% to 32%, a preparation method thereof, a secondary battery using the cell pouch film, and a manufacturing method for the secondary battery. The sealing strength of the pouch film may be maintained or increased at high temperatures, thereby providing excellent high-temperature stability, which prevents electrolyte leakage during battery use in high-temperature environments and ensures battery safety with fewer defects.

Abstract: Disclosed is a secondary battery pouch film including a layered structure wherein at least an outer layer, a barrier layer, and a sealant layer are structured in that order, wherein the sealant layer includes an extrusion (EC) layer and a polypropylene (PP) layer below the extrusion (EC) layer, wherein a thickness ratio of the polypropylene (PP) layer to the sealant layer is more than 0.5, wherein an upper yield strength (N/mm2) in an MD direction of the sealant layer is 17.50 to 19.99, and an upper yield strength (N/mm2) in a TD direction thereof is 17.00 to 19.99, wherein a glass transition temperature (Tg) of the sealant layer is ?20° C. to ?10° C. The pouch film not only has excellent sealing strength at ambient temperature and high temperature, but also has excellent sealing strength maintenance at ambient temperature and especially at high temperature.

Abstract: A pouch film for a secondary battery, wherein at least an outer layer, a barrier layer, and a sealant layer are structured in this order, the sealant layer includes an extrusion (EC) layer and a polypropylene (PP) layer below the extrusion (EC) layer, having excellent sealing strength at ambient and high temperatures, and having excellent sealing strength maintenance properties at ambient and especially high temperatures, a method for preparing the pouch film, a secondary battery using the pouch film, and a method for manufacturing the same are disclosed. The pouch film for the secondary battery has excellent high temperature long-term reliability in battery pack manufacturing, and can be useful for medium to large-sized batteries.

Abstract: Disclosed is a cell pouch film and a method for preparing the same, secondary battery using the same, and a method for manufacturing the secondary battery, wherein the cell pouch film includes at least an outer layer, a barrier layer, and a sealant layer which is an inner layer, the outer layer comprises a PET film of 7 to 12 ?m on an outer side and a nylon film of 20 to 30 ?m in an inner side, the barrier layer has a thickness of 60 to 80 ?m, and the inner layer has a thickness of 60 to 100 ?m. The cell pouch film is excellent in insulation resistance properties while having high rigidity and high formability, and this is useful as a medium and large size, particularly next-generation cell pouch for electric vehicles.

Abstract: Provided is a secondary battery pouch film, comprising an outer layer, a metal layer, and a sealant layer, wherein the sealant layer comprises a cast polypropylene (CPP) layer without an extruded polypropylene (PP) layer or comprises the cast polypropylene (CPP) layer and the extruded polypropylene (PP) layer, and the secondary battery pouch film satisfies specific equations. The pouch film has excellent formability, curling, insulation, bending, and peel strength.

Abstract: Disclosed is a secondary battery pouch film, including an outer layer, a metal layer, and a sealant layer, wherein the sealant layer includes a cast polypropylene (CPP) layer and an extruded polypropylene (PP) layer, and the secondary battery pouch film satisfies the [Equation 1] where A+B<1.354, 0.6?C. In [Equation 1], A is a value obtained by dividing a thickness of the metal layer by a total thickness of the secondary battery pouch film, B is a value obtained by dividing a thickness of the metal layer by a thickness of the sealant layer, and C is a value obtained by dividing a thickness of the extruded polypropylene (PP) layer of the sealant layer by a thickness of the cast polypropylene (CPP) layer of the sealant layer. The pouch film has excellent formability, curling, insulation, bending, and peel strength.

Abstract: Disclosed are a method for manufacturing a secondary battery pouch film having at least an outer layer, a metal layer, a primer layer, and a sealant layer, or at least an outer layer, a metal layer, a primer layer, a melt-extrusion resin layer, and a sealant layer in this order, the method including: a drying process of applying and heating a primer layer composition on the metal layer so as to dry the primer layer composition and cure at least a part of the primer layer composition. The organic solvent-based emulsion composition contains acid-modified polypropylene and a curing agent and has a curing start temperature of 150° C. or lower, preferably 135° C. to 150° C., and a drying process temperature of 150° C. or lower, preferably 135° C. to 150° C. The method is not subjected to a thermal lamination process when laminating sealant layer.

Abstract: Disclosed are a method for manufacturing a secondary battery pouch film having at least an outer layer, a metal layer, a primer layer, and a sealant layer, or at least an outer layer, a metal layer, a primer layer, a melt-extrusion resin layer, and a sealant layer in this order, the method including: a drying process of applying and heating a primer layer composition on the metal layer so as to dry the primer layer composition and cure at least a part of the primer layer composition. The organic solvent-based emulsion composition contains acid-modified polypropylene and a curing agent and has a curing start temperature of 150° C. or lower, preferably 135° C. to 150° C., and a drying process temperature of 150° C. or lower, preferably 135° C. to 150° C. The method is not subjected to a thermal lamination process when laminating sealant layer.

Abstract: Disclosed are a method for manufacturing a secondary battery pouch film having at least an outer layer, a metal layer, a primer layer, and a sealant layer, or at least an outer layer, a metal layer, a primer layer, a melt-extrusion resin layer, and a sealant layer in this order, the method including: a drying process of applying and heating a primer layer composition on the metal layer so as to dry the primer layer composition and cure at least a part of the primer layer composition. The organic solvent-based emulsion composition contains acid-modified polypropylene and a curing agent and has a curing start temperature of 150° C. or lower, preferably 135° C. to 150° C., and a drying process temperature of 150° C. or lower, preferably 135° C. to 150° C. The method is not subjected to a thermal lamination process when laminating sealant layer.

Abstract: Disclosed are a method for manufacturing a secondary battery pouch film having at least an outer layer, a metal layer, a primer layer, and a sealant layer, or at least an outer layer, a metal layer, a primer layer, a melt-extrusion resin layer, and a sealant layer in this order, the method including: a drying process of applying and heating a primer layer composition on the metal layer so as to dry the primer layer composition and cure at least a part of the primer layer composition. The organic solvent-based emulsion composition contains acid-modified polypropylene and a curing agent and has a curing start temperature of 150° C. or lower, preferably 135° C. to 150° C., and a drying process temperature of 150° C. or lower, preferably 135° C. to 150° C. The method is not subjected to a thermal lamination process when laminating sealant layer.

Abstract: Disclosed are a method for manufacturing a secondary battery pouch film having at least an outer layer, a metal layer, a primer layer, and a sealant layer, or at least an outer layer, a metal layer, a primer layer, a melt-extrusion resin layer, and a sealant layer in this order, the method including: a drying process of applying and heating a primer layer composition on the metal layer so as to dry the primer layer composition and cure at least a part of the primer layer composition. The organic solvent-based emulsion composition contains acid-modified polypropylene and a curing agent and has a curing start temperature of 150° C. or lower, preferably 135° C. to 150° C., and a drying process temperature of 150° C. or lower, preferably 135° C. to 150° C. The method is not subjected to a thermal lamination process when laminating sealant layer.

Abstract: Disclosed is a cell pouch having excellent formability, which includes a high elongation nylon film. When the high elongation nylon film is stretched in a machine direction (MD), an increment of a tensile strength value with respect to an increment of an elongation value (an increment of tensile strength/an increment of elongation) increasing from 6.7% to 100% is more than 0.04 and less than 0.05, and when the high elongation nylon film is stretched in a transverse direction (TD), an increment of a tensile strength value with respect to an increment of an elongation value increasing from 6.7% to 100% is more than 0.06 and less than 0.08.

Abstract: The present specification discloses a cell pouch having excellent formability, which includes a high elongation nylon film. When the high elongation nylon film is stretched in a machine direction (MD), an increment of a tensile strength value with respect to an increment of an elongation value (an increment of tensile strength/an increment of elongation) increasing from 6.7% to 100% is more than 0.04 and less than 0.05, and when the high elongation nylon film is stretched in a transverse direction (TD), an increment of a tensile strength value with respect to an increment of an elongation value increasing from 6.7% to 100% is more than 0.06 and less than 0.08.