Process for the manufacture of porous film

Details Process for the manufacture of porous film Process for the manufacture of porous film

1987-10-21

1988-10-18

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

51289R, 264154, 264162, 264284, 264340, 4251748E, B29C 5904, B29C 7104

Patent

active

047786345

ABSTRACT:
A vapor and liquid permeable porous film suitable for disposable sanitary apparel structures is produced by first abrading an unoriented film by passing it through at least one set of at least two cooperating nip rollers, each having an abrasive grit surface and then subjecting the unoriented abraded film to a corona treatment.

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patent: 4563316 (1986-01-01), Isaka et al.

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