Process for manufacturing hose having reinforcement incorporated

Details Process for manufacturing hose having reinforcement incorporated Process for manufacturing hose having reinforcement incorporated

1993-07-12

1994-10-25

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

15624413, 15624414, 15624415, 15624418, 15624421, 15624424, 156250, 156255, 156500, 156510, B29C 4706

Patent

active

053585801

ABSTRACT:
A hose manufacturing process and a method therefor capable of leading to an increase in production efficiency and productivity and improving configurational and dimensional stability of the hose. A die is provided for co-extruding a flexible synthetic resin material and a rigid synthetic resin material to concurrently form an inner tube of a small diameter and a reinforcement which is concentric with the inner tube and has a diameter larger than the inner tube, respectively. Also, a cutter is arranged forward of the die in a direction of extrusion of the reinforcement for cutting the reinforcement into a spiral shape. Further, a compression air feed passage is formed in the die so as to feed compressed air into the inner tube, to thereby expand it. This permits the inner tube to be contacted with the reinforcement for adhesion therebetween.

REFERENCES:
patent: 3669824 (1972-06-01), Hess
patent: 3706173 (1972-12-01), Taylor
patent: 4132576 (1979-01-01), Neroni et al.
patent: 4473525 (1984-09-01), Drori
patent: 4500284 (1985-02-01), Lupke
patent: 4716001 (1987-12-01), Kottke
patent: 4859264 (1989-08-01), Buluschek

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