B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
B29D 23/00 (2006.01) B29C 43/10 (2006.01) B29C 43/12 (2006.01) B29C 53/58 (2006.01) B29D 23/22 (1990.01)
Patent
CA 2076931
- 15 - ABSTRACT OF THE DISCLOSURE A process for the manufacture of tubular rubber articles is disclosed and comprises a) forming a tube of uncured rubber on a mandrel; b) wrapping the tubular rubber by winding with a film laminate comprising i) at least one layer of a heat stabilized, oriented nylon film having a thickness of from 13 to 50 µm 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 µm 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 µm and having a shrinkage of 0.5 to 1.5% in the machine direction; and c) curing the rubber at an elevated temperature..
Dimock Stratton Llp
Du Pont Canada Inc.
LandOfFree
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