Heat-shrinkable article
AssigneeHigh Voltage Engineering Corporation
InventorJack H. Smuckler
Life of this patent
Estimating the term…
Abstract
Heat-resistant pressure-sensitive adhesives are used to form the closure of a heat-shrinkable wrap-around sleeve. Suitable pressure-sensitive adhesives include silicone-based adhesives, thermosetting acrylic adhesives, and thermosetting rubber/resin adhesives. However, silicone-based adhesives are not claimed herein, but are claimed in my co-pending application, Ser. No. 944,887, filed Sept. 22, 1978, now U.S. Patent No. 4,268,559, issued on May 19, 1981.
Claims9
A heat-shrinkable article comprising a heat-shrinkable sheet having two edges adapted to form a closure, said edges being heat-stable, at least one of said edges having thereon a pressure sensitive adhesive adapted, after compression against the other of said edges to form a closure having a minimum lap-shear bond strength of greater than approximately 1.0 psi at 300.degree. F., to maintain said closure at a temperature sufficiently high to shrink said heat-shrinkable sheet.
A process for making a heat-shrinkable article comprising the following steps:
- forming a heat-shrinkable sheet having two edges adapted to form a closure, said edges being heat-stable, and pressing against at least one of said edges a pressure-sensitive adhesive adapted, after compression against the other of said edges to form a closure having a minimum lap-shear bond strength of greater than approximately 1.0 psi at 300.degree. F., to maintain said closure at a temperature sufficiently high to shrink said heat-shrinkable sheet.
A process for ensleeving an article comprising the following steps:
- wrapping about an article to be ensleeved a heat-shrinkable article comprising a heat-shrinkable sheet having two edges adapted to form a closure, said edges being heat-stable, at least one of said edges having thereon a pressure sensitive adhesive adapted, after compression against the other of said edges to form a closure having a minimum lap-shear bond strength of greater than approximately 1.0 psi at 300.degree. F., to maintain said closure at a temperature sufficiently high to shrink said heat-shrinkable sheet, compressing said two edges together so as to form a closure, and heating said heat-shrinkable article to a temperature sufficiently high to shrink said heat-shrinkable sheet.
Dependencies are inferred from the claim text.