Method of producing a reinforced rubber hose by using a plastic

Details Method of producing a reinforced rubber hose by using a plastic Method of producing a reinforced rubber hose by using a plastic

1988-05-26

1989-11-21

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264 37, 264103, 264149, 264166, 264173, 264236, 264317, 264347, 425215, B29C 3344

Patent

active

048821012

ABSTRACT:
A method of producing a reinforced rubber hose, including the steps of continuously extruding a long plastic mandrel from a plastic material and feeding the extruded plastic mandrel, extruding an unvulcanized inner rubber tube on the long plastic mandrel, forming a tubular reinforcing layer on the unvulcanized inner rubber tube, extruding an unvulcanized outer rubber tube on the tubular reinforcing layer, vulcanizing the unvulcanized rubber tubes, thereby preparing a long rubber hose formed on the long plastic mandrel, cutting the long rubber hose into short rubber hoses having a predetermined length, while concurrently cutting the long plastic mandrel into short plastic mandrels, removing the short plastic mandrels from the short rubber hoses, and crushing the short plastic mandrels into a starting form of the plastic material, and returning the starting form of the plastic material to an extruder for continuously extruding the long plastic mandrel.

REFERENCES:
patent: 3255284 (1966-06-01), Meislohn
patent: 3690796 (1972-09-01), Borsvold
patent: 3972757 (1976-08-01), Derderian et al.
patent: 4019939 (1977-04-01), Barbier et al.
patent: 4112031 (1978-09-01), Gohlisch
patent: 4242296 (1980-12-01), Bricker
patent: 4415518 (1983-11-01), Pochurek et al.
patent: 4444700 (1984-04-01), Fondren
patent: 4702867 (1987-10-01), Sejimo et al.

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