Polyhydroxy acid films

Details Polyhydroxy acid films Polyhydroxy acid films

1990-07-16

1991-12-31

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Vacuum treatment of work

2642107, 2642358, 2642902, 26433121, 525413, 525415, 528354, 528359, B29C 4700, B29C 5512

Patent

active

050769839

ABSTRACT:
The present invention relates to a process for producing degradable, shrinkable films of polyhydroxy acid and plasticizers including melt processing the materials to obtain uniform composition, forming the composition into a film, and biaxially orienting the film. Also, non-shrinkable films are produced by heat-setting the biaxially oriented films at temperature above the composition glass transition temperature and below its melt temperature while maintaining the film under restraint. Films thus produced are useful for disposable, environmentally benign packaging and other conventional film uses.

REFERENCES:
patent: 1095205 (1914-05-01), Gruter et al.
patent: 2668162 (1954-01-01), Lowe
patent: 2703316 (1955-03-01), Schneider
patent: 3878284 (1975-04-01), Schmitt et al.
patent: 4033938 (1977-07-01), Augurt et al.
patent: 4727163 (1988-02-01), Bellis
patent: 4797468 (1989-01-01), De Vries
patent: 4800219 (1989-01-01), Murdoch et al.
patent: 4835293 (1989-05-01), Bhatia
patent: 4895681 (1990-01-01), Herrmann et al.
patent: 4966982 (1990-10-01), Ono et al.
patent: 4983745 (1991-01-01), Muller et al.
patent: 4990222 (1991-02-01), Aigner et al.
English-Language Translation of Fed. Rep. of Germany 3,724,933 (Published Feb. 9, 1989).
English-Language Translation of Fed. of Rep. of Germany 3,708,915 (Published Sep. 29, 1988).

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