Cross-linked olefine-ester tapes
AssigneeRaychem Corporation
InventorsRichard John Penneck, Robin James Thomas Clabburn
Life of this patent
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Abstract
A process of wrapping a substrate to insulate or protect it, wherein a tape comprising a cross-linked copolymer derived from an ethylenically unsaturated hydrocarbon and a carboxylic acid ester having ethylenic unsaturation is wrapped around the substrate, and subsequently shrunk. Although the tape is cross-linked, it nevertheless fuses sufficiently to bond to itself to form an integral structure. The substrate can if desired be removed, the tape serving as the inner layer to a hose.
Claims20
A method of covering a substrate, which comprises applying to the substrate a heat shrinkable tape in overlapping relation, said tape comprising a cross-linked copolymer formed from an ethylenically unsaturated hydrocarbon and a carboxylic acid ester having ethylenic unsaturation said tape having the property of adhesively bonding to itself upon heating, and heating the tape to cause it to shrink about the substrate and the overlapping layers to adhesively bond to each other.
A process for the manufacture of a hose, which comprises:
- applying to a cylindrical mandrel a heat shrinkable tape in overlapping relation, said tape comprising a polymer formed from an ethylenically unsaturated hydrocarbon and a carboxylic acid ester having ethylenic unsaturation, said tape having the property of adhesively bonding to itself upon heating;
- heating the covered mandrel to cause the tape to shrink about the mandrel and the overlapping layers of the tape to adhesively bond to each other;
- applying hose-forming components to the covered mandrel;
- and subsequently removing the mandrel.
Dependencies are inferred from the claim text.