AIR PERMEABLE PACKAGING MATERIAL HAVING HEAT-SEALING PROPERTY AND PACKAGE

摘要

PROBLEM TO BE SOLVED: To provide an air permeable packaging material which can be easily fabricated and which has high mechanical strength and sealing strength. SOLUTION: The air permeable packaging material 1 includes a cross lamination nonwoven fabric 2 and a spun bonded nonwoven fabric 3 made of a polyolefin resin laminated on one side surface of the nonwoven fabric 2. The cross lamination nonwoven fabric 2 is constituted by laminating two unidirectionally oriented and arranged nonwoven fabrics 2a, 2b with which filaments are unidirectionally arranged and oriented so that arranging direction of the filament may intersect perpendicularly mutually. COPYRIGHT: (C)2004,JPO