Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1985-04-25
1987-03-17
Kittle, John E.
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
428913, 174DIG8, 138140, 138178, 156 52, 156 86, F16L 914, B32B 3100
Patent
active
046507035
ABSTRACT:
A tubular heat recoverable article has two layers in thermal contact, one inside the other. The two layers have appreciably different recovery temperatures. Shrinking of the article on to a substrate is effected by applying heat to the outer layer (1) of higher recovery temperature such that conduction to the inner layer (2) of lower recovery temperature ensures that the inner layer (2) reaches its recovery temperature, and thus becomes elastomeric, before the outer layer begins to recover. The article, which may be used in an electric power cable splice, thus combines good storage life with good recovery time.
REFERENCES:
patent: 4207364 (1980-06-01), Nyberg
patent: 4234758 (1980-11-01), Guzy
patent: 4450871 (1984-05-01), Sato
patent: 4576871 (1986-03-01), Destreich
Burkard Herbert G.
Kittle John E.
Raychem GmbH
Rice Edith A.
Seidleck James J.
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