Plastic and nonmetallic article shaping or treating: processes – With printing or coating of workpiece – Anti-stick or adhesion preventing coating
Patent
1988-05-23
1989-11-14
Woo, Jay H.
Plastic and nonmetallic article shaping or treating: processes
With printing or coating of workpiece
Anti-stick or adhesion preventing coating
264257, 264313, 264321, 2643287, 264230, 249117, B29C 4556, B29C 3342, B29C 3356
Patent
active
048805831
ABSTRACT:
A method for the reductin of mold cycle time. A heat recoverable member in a compressed state is placed within a channel defined relative to the surface of a mold. A hardenable liquid used to form the article then flows in an accelerated manner through the channel. Thermal energy supplied to the heat recoverable material causes the heat recoverable material to expand within the channel, thereby displacing the hardenable liquid from the channel. The temperature of gelation of the hardenable liquid and the recovery temperature of the heat recoverable material may be selected such that the channels are substantially filled by the heat recoverable material prior to the hardening of the hardenable liquid. In this manner, the heat recoverable material becomes flush with the surface of the mold prior to hardening of the liquid so as to yield an article of manufacture having a relatively planar surface.
REFERENCES:
patent: 2460820 (1949-02-01), Hagopian
patent: 2794233 (1957-06-01), Morton
patent: 2852807 (1958-09-01), Altschuler
patent: 3135640 (1964-06-01), Kepka
patent: 3309450 (1967-03-01), Rodgers
patent: 3525799 (1968-05-01), Ellis
patent: 3758916 (1973-09-01), Wetmore
patent: 3832745 (1974-09-01), Dorfman
patent: 4035007 (1977-07-01), Harrison et al.
patent: 4116841 (1978-09-01), Borsanyi
patent: 4124678 (1978-11-01), Stroup
patent: 4148597 (1979-04-01), Larsen
patent: 4165287 (1979-08-01), Gayne
patent: 4238437 (1980-12-01), Rolston
patent: 4239625 (1980-12-01), Hlavinka
patent: 4666164 (1987-05-01), Becker et al.
Douglas Paul I.
Durkin II Jeremiah F.
Shell Oil Company
Woo Jay H.
LandOfFree
Method for reduction of mold cycle time does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for reduction of mold cycle time, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for reduction of mold cycle time will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1851732