| 摘要 |
A composition used to form thermoplastic films and coatings comprising a thermoplastic polyolefin and a ground natural mineral material wherein a film or coating formed of said composition heat seals at or above 200 degrees F. with a dwell time exceeding approximately 0.5 seconds, has a TAPPI T-525 Whiteness % over 78, a TAPPI T-425 Opacity % over 78, a post corona treated ASTM D-2578 dyne level over 38, a minimum moisture barrier transmission rate of 4.0 g/mil/100 sq. in./24 hrs. at 100 degrees F. at 90% relative humidity, and a minimum oxygen barrier of 350 cc/mil/100 sq. in/24 hrs. at 23 degrees C.
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