Rubber tube manufacture, with film laminate overwrap

Details Rubber tube manufacture, with film laminate overwrap Rubber tube manufacture, with film laminate overwrap

1992-08-26

1994-05-31

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

156184, 264316, 264319, B29C 4100, B29D 2322

Patent

active

053167139

ABSTRACT:
A process for the manufacture of tubular rubber articles includes a) forming a tube of uncured rubber on a mandrel; b) wrapping the tubular rubber by winding with a film laminate including i) at least one layer of a heat stabilized, oriented nylon film having a thickness of from 13 to 50 .mu.m and having a shrinkage of 2 to 10% in the machine direction, laminated to ii) at least one heat stabilized film selected from an oriented nylon film having a thickness of from 13 to 50 .mu.m and having a shrinkage of 2 to 10% in the machine direction, or a cast nylon film having a thickness of from 15 to 155 .mu.m and having a shrinkage of 0.5 to 1.5% in the machine direction; and c) curing the rubber at an elevated temperature.

REFERENCES:
patent: 2444903 (1948-07-01), Van Buren
patent: 2705227 (1955-03-01), Stamatoff
patent: 3883384 (1975-05-01), Hopkins
patent: 4324607 (1982-04-01), Dugger
patent: 4559095 (1985-12-01), Babbin
patent: 4737210 (1988-04-01), Dougherty
patent: 4762589 (1988-08-01), Akiyama et al.

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