Process for producing porous film or sheet

Details Process for producing porous film or sheet Process for producing porous film or sheet

1982-03-02

1984-09-18

Czaja, Donald E.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

264147, 264DIG13, 524481, 524583, B29H 720

Patent

active

044723288

ABSTRACT:
A process for producing a porous film or sheet, which comprises melt-molding a composition prepared by compounding 100 parts by weight of a polyolefin resin with 25 to 400 parts by weight of a filler and 1 to 100 parts by weight of a liquid or waxy hydrocarbon polymer into film or sheet, and stretching the resulting film or sheet.

REFERENCES:
patent: 3154461 (1964-10-01), Johnson
patent: 3551538 (1966-10-01), Yamamoto et al.
patent: 3775521 (1973-11-01), Yamamoto et al.
patent: 3882063 (1975-05-01), Gouw
patent: 3903234 (1975-09-01), Ikeda et al.
patent: 4024213 (1977-05-01), Honda et al.
patent: 4154715 (1979-05-01), Kruse
patent: 4335026 (1982-06-01), Balinth

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