B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/713
B29C 33/00 (2006.01)
Patent
CA 1317722
F6B/4.194 METHOD AND APPARATUS FOR THE MULTI-UNIT PRODUCTION OF THIN-WALLED TUBULAR PRODUCTS UTILIZING AN INJECTION MOLDING TECHNIQUE Abstract of the Disclosure Thin-walled elongated tubular products are individ- ually formed utilizing injection molding of a plastic melt into a mold cavity having an elongated core pin maintained in substantially centered relation on the interior thereof through the application of tension continuously being applied coaxially to the core pin. Multi-unit or mass production techniques include use of a plurality of mold cavities each successively subjected to receiving a hot plastic melt injection wherein the re- sulting formed product is, through successive steps, removed from the mold cavity, trimmed, separated from the core pin, and possibly further processed for depositing in collection facilities or transferred to other pro- cessing steps. Concurrently, each mold cavity and associated core pin are initially separated, processed separately and reunited for continued and repeated use and further subjected to precise and preprogrammed positioning relative to the inflow of plastic melt in order to overcome any imbalance or inconsistency in flow characteristics of the flow of the hot melt into the mold cavity.
600954
Fetherstonhaugh & Co.
Taut Inc.
LandOfFree
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