Nippon Petrochemicals Company, Limited

Masato Katou

Tsutomu Miyamoto

Hiroshi Shimizu

Fusao Tokuhiro

A method for laminating a porous sheet 1 and a coarse mesh reinforcing material 2 which includes an adhesive layer and is reinforced by drawing, by heat pressing with that adhesive layer in between, in which, (1) the heating temperature during heat pressing is equal to or above the melting point of the adhesive layer and equal to or below the melting point of the porous sheet, (2) a specific relationship is maintained among the difference between the heating temperature and the melting point of the adhesive layer, the difference between the heating temperature and the softening point of the porous sheet, and the heating time, and (3) the unrolling tension of the porous sheet is maintained at 200 to 550 g/mm.sup.2. The method allows a reinforced laminated material that retains moisture permeability and has excellent mechanical strength to be obtained inexpensively without the occurrence of wrinkling or remarkable curling

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Chiba-ken, Japan

Masato Katou