JP2003291283A5 - - Google Patents

Claims (13)

A laminate comprising at least two layers, wherein one surface layer is composed of a potassium ionomer of ethylene / unsaturated carboxylic acid copolymer or a mixture of the potassium ionomer and a thermoplastic resin, and the other surface. The layers are composed of a thermoplastic resin having a surface resistivity of 1 × 10 ¹⁴ Ω or more, and both surface layers have a 10% decay time of 20 seconds or less at an applied voltage of +5000 V measured in an atmosphere of 23 ° C. and 50% relative humidity A laminate characterized by the above. The potassium ionomer is a potassium ionomer of two or more kinds of ethylene / unsaturated carboxylic acid copolymers having different acid contents, and the average acid content of the ethylene / unsaturated carboxylic acid copolymer is 10 to 20% by weight. The laminate according to claim 1 , wherein the acid content difference between the highest acid content and the lowest acid content is 2 to 20% by weight, and the degree of neutralization with potassium ions is 60% or more. body. The laminate according to claim 1 or 2 , wherein the potassium ionomer layer contains 15% by weight or less of a polyhydroxy compound. The laminate according to any one of claims 1 to 3, wherein the thermoplastic resin is an olefin polymer. The laminate according to claim 4 , wherein the olefin polymer is a linear low density polyethylene. The laminate according to claim 4 , wherein the olefin polymer is an ethylene polymer produced in the presence of a metallocene catalyst. The laminate according to any one of claims 1 to 6, wherein an adhesive layer and / or a recovery layer is provided between the potassium ionomer layer and the thermoplastic resin layer. The thickness of the thermoplastic resin layer or the ratio of the total thickness of the thermoplastic resin layer and the adhesive layer and / or the recovery layer to the thickness of the potassium ionomer layer is in the range of 0.1 to 100. The laminated body in any one of 1-7. It is a sheet | seat or a film, The laminated body in any one of Claims 1-8. The laminate according to claim 9 , wherein the sliding friction coefficient is 1.0 or less. The laminate according to any one of claims 1 to 8 , wherein the laminate is a bag or a multilayer container, and the potassium ionomer layer is an outer layer. The laminate according to claim 11 , wherein the multilayer container is obtained by blow molding. The laminate according to any one of claims 1 to 8 , wherein the laminate is a bag or a multilayer container, and the potassium ionomer layer is an innermost layer or an outermost layer.