Filled biaxially oriented polymeric film
Abstract
Abstract A THERMOPLASTIC FILM AND A PROCESS FOR PREPARING THE FILM WHICH IS CHARACTERIZED AS A CELLULAR POLYMER MATRIX WITH A FILLER DISPERSED THEREIN, BIAXIALLY ORIENTED BY STRETCHING IN MUTUALLY PERPENDICULAR DIRECTIONS AND HAVING A VOID CONTENT OF AT LEAST ABOUT 30 TO 70%, AN ELONGATION AT BREAK AT 22* C. OF AT LEAST ABOUT 8% IN EITHER DIRECTION OF STRETCH, A FIBROUS SURFACE HAVING ABOUT 2 TO 40 SURFACE RUPTURES PER SQUARE MILLIMETER, AND AN OXYGEN PERMEABILITY OF ABOUT 900 TO 10,000,000 CC./100 AQ. IN./ 24 HRS./ATMOSPHERE/MIL. THIS FILM HAS MANY DESIRABLE AND CONTROLLABLLE PROPERTIES SUCH AS DENSITY, OPACITY, POROSITY, STRENGTH AND SURFACE TEXTURE MAKING IT USEFUL FOR VARIOUS APPLICATIONS SUCH AS A BAG FOR PACKAGING GROCERIES, A SYNTHETIC WRITING PAPER, AN ULTRA FILTER, OR A SUBSTRATE FOR AN ION EXCHANGE MEMBRANE.
Inventors
- 👤 R Ikeda
- 👤 G Ostapchenko
Bibliographic Details
Claims Analysis
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