Porous film

Details Porous film Porous film

1987-05-27

1988-12-27

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

264 41, 264 453, 2642888, 2642902, 521143, 521182, C08L 6700, C08L 7700

Patent

active

047941286

ABSTRACT:
A porous film comprises a polyolefin resin, a filler and a polyester obtained from a polybasic acid, a polyhydric alcohol and a monobasic acid having 14 to 22 carbon atoms and/or a monohydric alcohol having 12 to 22 carbon atoms or a polyester obtained from a polybasic acid and a monohydric alcohol, the film being obtained by melting and moulding and then stretching. It has a good permeability to moisture and impermeability to liquid, and is useful for a sanitary napkin.

REFERENCES:
patent: 3459736 (1969-08-01), Dalibor
patent: 4100238 (1978-07-01), Shinomura
patent: 4105737 (1978-08-01), Suzuki
patent: 4116892 (1978-09-01), Schwarz
patent: 4454256 (1984-06-01), Pellicelli
patent: 4563317 (1986-01-01), Kamei et al.
patent: 4705812 (1987-11-01), Ito et al.
patent: 4705813 (1987-11-01), Ito et al.
Chemical Abstracts, vol. 101, No. 56083a, p. 39 (1984).
Chemical Abstracts, vol. 104, No. 150457j, p. 72 (1986).

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