Method of forming a master and a mold by promoting the solubility of a polymeric material
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United States of America Patent
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N/A
Issued Date -
Oct 18, 2001
app pub date -
Jun 20, 2001
filing date -
Feb 8, 1999
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
This invention involves a method of promoting solubility of a polymeric material of a master for separating the master from a mold in contact therewith to form a desired geometry on the mold. The method comprises providing a mixture of a non-polymeric organic material and polymeric material, and providing a molten material and a supercritical fluid. The non-polymeric organic material represents about 25% to 75% of the weight of the master. The polymeric material represents the balance of the weight of the master. The method further includes forming a master from the mixture. It has a predetermined shape on a contact surface thereof. The method further includes forming a mold in contact with the contact surface of the master, wherein the master and mold have relative mating surfaces to form the desired geometry on the mold. The method further includes separating the master from the mold by exposing the master to the supercritical fluid.
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