Air-permeable and liquid-impermeable backsheet for use in body f

Details Air-permeable and liquid-impermeable backsheet for use in body f Air-permeable and liquid-impermeable backsheet for use in body f

1993-01-22

1994-11-15

Green, Randall L.

Surgery

Means and methods for collecting body fluids or waste material

Absorbent pad for external or internal application and...

604358, 604370, 604367, 604382, A61F 1315, A61F 1320

Patent

active

053643810

ABSTRACT:
Here is disclosed air-permeable and liquid-impermeable backsheet for use in body fluid absorbent articles.
Polyolefin plastic sheet containing inorganic filler particles is stretched and then thermo-embossed to obtain the backsheet 1. At least one surface of this backsheet 1 is composed of a rough surface zone 5 and a smooth surface zone 6 so that these two kinds of zones define together a desired surface pattern over the backsheet. The rough surface zone 5 has fine pores 7 for air-permeability and the smooth surface zone 6 facilitates an absorbent core of the body fluid absorbent article to be seen through this smooth surface zone 6.

REFERENCES:
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patent: 4629643 (1986-12-01), Curro et al.
patent: 5073316 (1991-12-01), Bizen et al.
patent: 5078708 (1992-01-01), Haque
Database WPIL, Section Ch, Week 8818, 24 Mar. 1988-Derwent Publications-London Class A08 AN 88-122681 JP-A-63 066 241 (Dainippon Printing KK).
Database WPIL, Section Ch Week 8809, 25 Jan. 1988 Derwent Publications London Class A04 AN-88061346 JP-63 017 941 Nitto Electric Ind kk.
Database WPIL Section Ch, Week 9112, Feb. 1991 Derwent Publications London Class A04 AN-91-084439 JPA-3 030 934 UniCharm KK.

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