Cork line having foamed thermoplastic resin floats integrally bo

Details Cork line having foamed thermoplastic resin floats integrally bo Cork line having foamed thermoplastic resin floats integrally bo

1977-04-27

1979-05-08

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Outside of mold sintering or vitrifying of shaped inorganic...

Including plural heating steps

264 455, 264 464, 264 469, 264251, 264297, 264328, 264DIG14, 264DIG83, B29D 2700, B63B 2152

Patent

active

041527984

ABSTRACT:
A process for producing cork lines which comprises holding a leader or lers with a pair of metal molds having at the junctional surfaces thereof one or more cavities for forming a float or floats and one or more furrows formed so as to pass through said cavity or cavities for holding said leader or leaders, injecting a molten synthetic resin mixed witha foaming agent into said cavity or cavities to effect molding and foaming of said resin, cooling said metal molds and taking out a flat or floats integrally fixed to said leader or leaders from said metal molds. An apparatus for producing cork lines which comprises an injection molding machine having a pair of metal molds with a cavity or cavities to form a float or floats and with furrows formed so as to pass through said cavity or cavities for holding a leader or leaders on the junctional surfaces of sid metal molds, a device for maintaining said leader or leaders in stretched state between said metal molds and a device for intermittently conveying said leader or leaders in stretched state for a given distance in the longitudinal direction. A cork line thus produced can be used in various fields of industry, especially for fisheries.

REFERENCES:
patent: 2465656 (1949-03-01), Morin
patent: 2744289 (1956-05-01), Wanders
patent: 2920354 (1960-01-01), Zumbrunnen
patent: 3268636 (1966-08-01), Angell
patent: 3269047 (1966-08-01), Slattery
patent: 3511736 (1970-05-01), Nielsen et al.
patent: 3578763 (1971-05-01), Platou
patent: 3879780 (1975-04-01), Williams
patent: 4000532 (1977-01-01), Nielsen
patent: 4009237 (1977-02-01), Kimura et al.

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