Process for producing porous thermoplastic resin sheet

Details Process for producing porous thermoplastic resin sheet Process for producing porous thermoplastic resin sheet

1975-03-13

1976-11-16

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By treating occluded solids

260 25E, 260 174ST, 264175, B29D 2700, B29D 714

Patent

active

039924963

ABSTRACT:
A porous thermoplastic resin sheet is obtained by molding into a sheet a mixture comprising 100 parts by weight of a thermoplastic resin and 0.1 to 50 parts by weight of a pullulan powder, and then immersing the resulting thermoplastic resin sheet in water to dissolve-out and remove the said pullulan powder.

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patent: 3551210 (1970-12-01), Bahler et al.
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patent: 3784390 (1974-01-01), Hijiya
patent: 3888809 (1975-06-01), Nakashio et al.

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