Heat-activatable adhesive article
AssigneeMinnesota Mining and Manufacturing Company
InventorsClyde D. Calhoun, David C. Koskenmaki
Life of this patent
Estimating the term…
Abstract
A heat-activatable adhesive article is provided. The article, preferably a tape, includes a substantially laterally stable heat recoverable carrier film having at least one surface comprising a recessed surface portion and a raised surface portion therein; and an adhesive layer in the recessed surface portion in an amount such that the adhesive does not extend above the raised surface portion thereby forming an exposed raised surface portion. In use, the carrier film recovers upon exposure to heat thereby allowing the adhesive in the recessed surface portion to contact a substrate. The heat-activatable adhesive article can be positionable, repositionable, or both.
Claims25
A heat-activatable adhesive article comprising:
- (a) a substantially laterally stable heat recoverable carrier film of memory shaped material and having at least one surface comprising a recessed surface portion and a raised surface portion therein;
- and
- (b) an adhesive layer in the recessed surface portion in an amount such that the adhesive does not extend above the raised surface portion thereby forming an exposed raised surface portion.
A heat-activatable positionable adhesive tape comprising:
- (a) a carrier film having two oppositely parallel surfaces wherein at least one of the surfaces comprises at least one recess that is substantially continuous and interrupted by projections protruding therefrom,
- (b) a pressure sensitive adhesive in the recess;
- wherein the carrier film recovers upon exposure to heat thereby allowing the adhesive in the recess to contact a substrate.
A method of adhering a heat-activatable adhesive article to a substrate comprising:
- (a) applying the heat-activatable adhesive article to the substrate;
- wherein the heat-activatable adhesive article comprises:
- (i) a substantially laterally stable heat recoverable carrier film of memory shaped material and having at least one surface comprising a recessed surface portion and a raised surface portion therein;
- and
- (ii) an adhesive layer in the recessed surface portion in an amount such that the adhesive does not extend above the raised surface portion thereby forming an exposed raised surface portion;
- and
- (b) applying a sufficient amount of heat to the heat-activatable adhesive article such that the carrier film is modified to allow the adhesive in the recessed surface portion to contact the substrate.
Dependencies are inferred from the claim text.