Bonded article
AssigneeRaychem Corporation
InventorsDerek R. Chambers, Michael Carpenter
Life of this patent
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Abstract
A hollow, heat-recoverable article 1, for enclosing objects such as electronic components etc. has a thermoplastic lining on its interior surface and includes a fusion bonded portion 2 in which different parts of the article have been brought together and bonded by fusion of the lining with substantially no welding of the heat-recoverable material forming the wall. The lining has a melting point that is higher than the recovery temperature of the article, thereby enabling subsequent recovery of the article without rupture of the bonded portion.
Claims10
A hollow, heat-recoverable article for enclosing part of an object, the article having a thermoplastic lining on its interior surface and including a fusion bonded portion in which different parts of the article have been brought together and bonded together by fusion of the lining with substantially no welding of the heat-recoverable material forming the article wall, the thermoplastic lining having a softening point that is at least 20.degree. C. higher than the recovery temperature to enable the article to be recovered without rupture of the fusion bonded portion.
A process for the manufacture of a heat-recoverable article which comprises forming a heat-recoverable sheet or tube of material that has a thermoplastic lining, bringing together opposed portions of one or more such sheets or of the tube and bonding them together by fusion of the thermoplastic lining with substantially no welding of the material forming the sheet or tube wall, the thermoplastic lining having a softening point that is at least 20.degree. C. higher than the recovery temperature of the heat-recoverable material.
Dependencies are inferred from the claim text.