Process for producing a surfactant treated, formed, polymeric we

Details Process for producing a surfactant treated, formed, polymeric we Process for producing a surfactant treated, formed, polymeric we

1995-08-02

1996-05-28

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Perforation by differential fluid pressure; or smoothing,...

264557, 264570, 264571, 264156, 26417315, 26417316, 26417318, 2642102, 264280, 2642106, B29C 4706, B29D 900

Patent

active

055208754

ABSTRACT:
A coextruded, multilayer polymeric film having a core layer including a surfactant and at least one outer layer is placed on a forming structure. The forming structure moves in a direction parallel to the direction of travel of the multilayer film and carries the multilayer film in that direction. A fluid pressure differential is applied across the thickness of the multilayer film along the direction of movement of the forming structure. The fluid pressure differential is sufficiently great to cause the multilayer film to conform with the forming structure forming a formed polymeric web. The formed polymeric web is exposed to a temperature which is sufficiently great enough to allow the surfactant in the core layer to migrate to the outer layer to form a surfactant treated formed polymeric web.

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