Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Production of continuous or running length
Patent
1987-08-24
1988-09-20
Anderson, Philip
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Production of continuous or running length
264154, 264280, 264299, 264504, 264555, 425290, 425304, 4253261, 425365, 425384, 425385, 4253871, 425DIG37, 604378, 604383, 6043851, B29C 5904, B29C 6902
Patent
active
047724447
ABSTRACT:
A method for hydraulically deforming a web of polymeric film while the film is supported on a moving forming structure to produce a novel microbubbled substantially fluid-impervious web exhibiting substantially the same consumer preferred soft and silky tactile impression and reduced noise generation levels heretofore only achievable in microapertured, and hence substantially fluid pervious polymeric webs. In a particularly preferred embodiment, the microbubbled polymeric web exhibits a fine-scale pattern of discrete mushroom shaped surface aberrations, each of said surface aberrations having its amplitude oriented substantially perpendicular to the surface in which the surface aberration originates. The method may also be utilized to produce fluid pervious microapertured webs which are known in the art. Apparatus for producing microbubbled and/or microapertured webs either in "planar" or "macroscopically expanded" form are also disclosed.
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Chappell Charles W.
Cree James W.
Curro John J.
Anderson Philip
Gorman John V.
Linman E. Kelly
The Procter & Gamble & Company
Witte Richard C.
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