Abstract:
Provided is a gas adsorption sheet for a secondary battery, which contains gas adsorbent particles excellent in gas adsorption property, and allows the gas adsorption performance of the gas adsorbent particles to be sufficiently exhibited. According to one embodiment of the present invention, there is provided a gas adsorption sheet for a secondary battery, including: a heat-resistant base material; and a gas adsorption layer arranged on at least one surface of the heat-resistant base material, wherein the gas adsorption layer contains: a binder resin; and gas adsorbent particles each of which is formed of an inorganic porous material having pores, and is capable of adsorbing a gas.
Abstract:
A covering material-provided non-aqueous secondary cell includes a non-aqueous secondary cell including a cell main body having one surface, the other surface disposed in opposed relation at spaced intervals to the one surface, and circumferential side surfaces connecting a circumferential end edge of the one surface to a circumferential end edge of the other surface and a terminal provided on at least any one of the one surface and the other surface and a covering material covering the cell main body so as to expose the terminal. The covering material includes a substrate and a pressure-sensitive adhesive layer disposed on one surface of the substrate and by allowing the pressure-sensitive adhesive layer to pressure-sensitively adhere to at least a part of the circumferential end edge of at least any one of the one surface and the other surface of the cell main body, the covering material covers at least a part of the circumferential end edge of at least any one of the one surface and the other surface of the cell main body.
Abstract:
Provided is a pressure-sensitive adhesive tape that can be used in the fixing of an electrode and a separator at the time of the production of a secondary battery, and that can satisfactorily fix the separator and the electrode to each other while maintaining the permeability of an electrolytic solution into the separator. A pressure-sensitive adhesive tape according to one embodiment of the present invention includes: a first base material; and a pressure-sensitive adhesive layer formed in a peelable manner on the first base material, in which the pressure-sensitive adhesive layer is formed by patterning.
Abstract:
Provided is a pressure-sensitive adhesive tape for a battery outer packaging having the following feature: the shift (adhesive shift) of the tape in its pressure-sensitive adhesive surface and liquid penetration when the tape is subjected to a salt water immersion test are prevented, and hence the tape is useful for the outer packaging of a battery. The pressure-sensitive adhesive tape for a battery outer packaging includes: a base material; and a pressure-sensitive adhesive layer arranged on one surface of the base material, in which: a value calculated from an expression “a loss modulus of elasticity (G″) of the pressure-sensitive adhesive tape for a battery outer packaging at 70° C.×a thickness (mm) of the pressure-sensitive adhesive layer/a thickness (mm) of the pressure-sensitive adhesive tape for a battery outer packaging” is 8×103 Pa or more; a value calculated from an expression “a storage modulus of elasticity (G′) of the pressure-sensitive adhesive tape for a battery outer packaging at 23° C.×the thickness (mm) of the pressure-sensitive adhesive layer/the thickness (mm) of the pressure-sensitive adhesive tape for a battery outer packaging” is 3×105 Pa or less; and a pressure-sensitive adhesive strength of the pressure-sensitive adhesive tape for a battery outer packaging to a stainless-steel plate at 23° C. is 2 N/10 mm or more.
Abstract:
A pressure sensitive adhesive having tackiness sufficient for fixing an article even when heated and having adhesive strength that may be lowered when heated to a higher temperature is provided. The pressure sensitive adhesive polymer comprises a copolymer of a (meth)acrylic monomer represented by a general formula, CH2═C(R1)COOR2 (wherein R1 is a hydrogen group or a methyl group and R2 is a hydrogen group or an alkyl group having of 1 to 20 carbon atoms) and a comonomer having a double bond copolymerizable with the (meth)acrylic monomer, in which the comonomer has a ring structure having two or more carbon atoms and one or more double bonds and containing one or more atoms other than carbon, and the polymer is obtained by copolymerizing 1 to 20 parts by weight of the monomer having a ring structure with 100 parts by weight of the (meth)acrylic monomer.
Abstract:
There are provided a base material-less double-sided pressure-sensitive adhesive sheet without warping due to shrinkage of a base material after heat treatment, and having good peelability in heat peeling, and a method for manufacturing electronic parts or semiconductors by using the pressure-sensitive adhesive sheet. A heat-peelable pressure-sensitive adhesive sheet which is a base material-less double-sided pressure-sensitive adhesive sheet including a heat-expandable pressure-sensitive adhesive layer containing heat-expandable microspheres and a pressure-sensitive adhesive layer different from the heat-expandable pressure-sensitive adhesive layer and laminated thereon, wherein the pressure-sensitive adhesive layer has a higher elastic modulus than the heat-expandable pressure-sensitive adhesive layer.