B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
18/111
B29D 99/00 (2010.01)
Patent
CA 1085115
Mold Release Film Abstract of the Disclosure It has been discovered that thermosetting stereotype matrices can be prepared from plastic pattern plates using a thin cast film of propylene polymer as a release agent. The propylene polymer release films are readily available, inexpensive, assure complete coverage, yield readily: to afford matrices which replicate the surface of the pattern plates with excellent fidelity and prevent adhesion.
277978
Fetherstonhaugh & Co.
Hercules Incorporated
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