Composite sheet comprising a non-woven fabric and a film

A composite laminated sheet comprising a thermoplastic crystalline film and a non-woven fabric comprising thermoplastic conjugated fibers,

• said thermoplastic conjugated fiber being composed of a low melting point component and a high-melting point component, and the difference in the melting points between the low melting point component and the high melting point component is not less than 10° C.;
• wherein the low melting point component is at least one selected from the group consisting of a butene-propylene copolymer comprising 50 to 99 wt. % of propylene and 1 to 50 wt. % of 1-butene, an ethylene-octene copolymer comprising 73 to 99 wt. % of ethylene and 1 to 27 wt . % of 1-octene, and an ethylene-butene-propylene copolymer comprising 84 to 97 wt. % of propylene, 1 to 15 wt. % of 1-butene and 1 to 10 wt. % of ethylene;
• the difference in the melting point between said thermoplastic crystalline film and said low melting point component of said conjugated fiber is not more than 30° C.;
• and
• the temperature of the position corresponding to 10% of the area from the side of a melting starting point of the endothermic peak of an entire conjugated fiber evaluated by DSC is between the melting starting point and the melting completion point of the endothermic peak of said film evaluated by DSC.