HEAT-SEALING SHEET, BAG, AND METHODS FOR MANUFACTURING THE SAMES

摘要

PROBLEM TO BE SOLVED: To improve the heat-sealing property of a heat-sealing sheet.

SOLUTION: The heat-sealing sheet 1 includes reticular films 2 which are provided with three-dimensional thermoplastic resin fibers or tapes that intersect with each other in a net-like fashion and base materials 3 which are pasted with the reticular films. The reticular films are equipped with openings which are demarcated by fibers or tapes and penetrate the reticular films in the thickness direction, and the openings are constituted in a way that they are practically blocked when reticular films abut against each other and are heated and pressurized.

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