Debondable Adhesive Article and Methods of Making and Using the Same

摘要

A heat-debondable adhesive article having two opposing sides is provided that includes a shape-memory polymer sheet in its temporary strained shape that includes a plurality of slits therein and a first adhesive on one opposing side of the polymer sheet and a second adhesive on the other opposing side of the polymer sheet. The provided article, optionally, includes a first substrate in contact with the first adhesive and a second substrate in contact with the second adhesive. The article can be debonded by heating the article to a temperature equal to or greater than a transition temperature for the shape-memory polymer sheet.

主权项

1. A heat-debondable adhesive article comprising:
a shape-memory polymer sheet with an area having a strained temporary shape and an intrinsic shape, first and second opposing surfaces, and comprising at least one of a plurality of slits each having a width therein, and wherein the plurality of slits defines a total slit length, wherein if heated to or above a transition temperature range, the shape-memory sheet at least partially converts from its strained temporary shape to its intrinsic shape; a first adhesive layer having a first thickness and first and second opposing surfaces, wherein the first adhesive layer comprises a pressure-sensitive adhesive, andwherein a substantial portion of the first opposing surface of the first adhesive layer is disposed upon a substantial portion of the first opposing surface of the shape-memory polymer sheet in its strained temporary shape; and
a second adhesive layer having a second thickness, first and second opposing sides, wherein a substantial portion of the first opposing side of the second adhesive layer is disposed upon a substantial portion of the second opposing side of the shape-memory polymer in its strained temporary shape, wherein at least one of the adhesive layers comprises a foamed adhesive.