The invention provides (1) a propylene-ethylene-1-butene random copolymer having specific properties, (2) a resin composition comprising a propylene-ethylene-1-butene random copolymer with specific properties, and a nucleating agent, (3) a resin composition comprising a propylene-ethylene-1-butene random copolymer with specific properties, and a propylene-based polymer; and their films, and multi-layered, propylene-based laminates of which the outermost layer is made of a specific propylene-based polymer. The films and the laminates exhibit excellent heat-sealability, and have good slip characteristics and good anti-blocking characteristics.

Вымысел обеспечивает (1) сополимер propylene-ethylene-1-butene случайно имея специфически свойства, (2) состав смолаы состоя из сополимера propylene-ethylene-1-butene случайно с специфически свойствами, и nucleating веществом, (3) состав смолаы состоя из сополимера propylene-ethylene-1-butene случайно с специфически свойствами, и пропилен-osnovanny1 полимер; и их пропилен-osnovannye пленки, и multi-layered, прокатывают outermost слой сделан специфически пропилен-osnovannogo полимера. Пленки и прокатывают жар-heat-sealability экспоната превосходный, и имеют хорошие характеристики выскальзования и хорошие anti-blocking характеристики.