WET TYPE NONWOVEN FABRIC FOR PACKING MATERIAL

摘要

PROBLEM TO BE SOLVED: To obtain a wet type nonwoven fabric for a packing material having excellent gas barrier properties and followingness. SOLUTION: This nonwoven fabric for a packing material is composed of a staple fiber having <=20 mm length and the ratio L/D of the length (L) of the staple fiber to the diameter (D) of single fiber of the staple fiber of 500-2,000 and has the ratio of warp/weft of tensile strength of 1.0-2.0 and a distance between fibers represented by the formula distance between fibers=D× (π×ρ/2×31/2×d)1/2-1} of <=25 μm (D is the average diameter [μm] of single fiber of the staple fiber; ρ is the density [g/cm3] of a polymer constituting the single fiber; d is the density [g/cm3] of the nonwoven fabric; π is a circle ratio.).