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Films having improved characteristics and methods for their preparation and use

  • US 5,931,165 A
  • Filed: 02/06/1997
  • Issued: 08/03/1999
  • Est. Priority Date: 09/06/1994
  • Status: Expired due to Fees
First Claim
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1. A gelatin film characterized by:

  • a film thickness in the range from 0.03 mm to 0.2 mm;

    a pliability in the range from 1 mN to 4 mN; and

    at least one characteristic selected from the group consisting of;

    a moisture content in the range from 11% to 16%;

    an elasticity in the range from 30% to 150%;

    a tensile strength in the range from 150 N/cm2 to 260 N/cm2 ;

    a melting temperature in the range from 33°

    C. to 40°

    C.;

    a collagenase digestion time in the range from 10 min. to 40 min, anda degree of swelling (V/Vo) in the range from 4.5 to 6.5.

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