Abstract: A polarizer protective film of the present invention comprises a thermoplastic resin layer having a moisture permeability of 100 g/m2/24 hours or less; and a resin layer that contains a nylon resin and is laminated on the thermoplastic resin layer. The polarizer protective film can have good adhesion to a polarizer when it is bonded to the polarizer through an adhesive layer to form a polarizing plate, and can form a polarizing plate with good polarization properties.

Abstract: A polarizer protective film of the present invention comprises a thermoplastic resin layer having a moisture permeability of 100 g/m2/24 hours or less; and a resin layer that comprises a copolymer containing a styrene monomer unit and is laminated on the thermoplastic resin layer through an adhesive resin layer. The polarizer protective film can have good adhesion to a polarizer when it is bonded to the polarizer through an adhesive layer to form a polarizing plate, and can form a polarizing plate with good polarization properties.

Abstract: A laminate obtained by laminating a resin composed chiefly of a polyester on a base material, said resin layer having a melt viscosity ratio (R) defined by the following formula (1),R=.eta..sub.12.2 /.eta..sub.1216 (1)wherein .eta..sub.12.2 is a melt viscosity at an extrusion temperature of the polyester at a shearing rate of 12.2 sec.sup.-1, and .eta..sub.1216 is a melt viscosity at an extrusion temperature of the polyester at a shearing rate of 1216 sec.sup.-1,of not smaller than 2.0 at a melt extrusion temperature of the polyester, and having .eta..sub.1216 of not smaller than 500 poises, and said resin layer being further quickly quenched after it is melt-extruded.

Abstract: A laminate for can-making is disclosed, comprising a metal sheet and a thermoplastic resin layer provided on the surface of the metal sheet. The thermoplastic resin layer comprises a laminate film layer comprising a polyester-base resin intermediate layer (A) containing 10 wt % or more of coloring agent particles, a polyester-base resin outer surface layer (B) and a polyester-base resin backing layer (C). The outer surface layer (B) and the backing layer (C) each contains the coloring agent particles in an amount of 20 wt % or less and at the same time, in an amount less than that contained in the intermediate layer (A). Also disclosed is a process for making a can using the laminate.