Patent Number: 6,252,128

Title: Porous sheet

Abstract: A porous sheet suitable for use in first-aid sticking plasters, poultices, etc. as the substrate is described. The porous sheet comprises a thermoplastic polymer, and an arbitrary cross section of the porous sheet has a polymer packing of 30 to 90% and contains 2 to 100 polymer sections having a sectional area of 0.001 mm.sup.2 or less per millimeter along the surface of the porous sheet. At least one surface of the porous sheet is in net-work structure (a) formed by fiber-like bodies which are integrally bonded to each other at intersections by fusion of polymer constituting the fiber-like bodies and/or net-work structure (b) formed by fiber-like protrusions. With such structures, the porous sheet has a moderate air permeability, and is good in soft texture and highly resistant to fluff formation by rubbing.

Inventors: Obata; Soichi (Ehime-ken, JP)

Assignee: Kuraray Co., Ltd.

International Classification: C08J 5/18 (20060101); A61F 013/00 ()

Expiration Date: 06/26/2018