C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 5/18 (2006.01)
Patent
CA 2310910
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 mm2 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.
Kuraray Co. Ltd.
Smart & Biggar
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