Patterned pressure sensitive adhesive transfer tape
AssigneeMinnesota Mining and Manufacturing Company
InventorsClyde D. Calhoun, David C. Koskenmaki, Mieczyslaw H. Mazurek
Life of this patent
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Abstract
A carrier web with recesses or pockets therein which contain pressure sensitive adhesive. The recesses in the carrier web maintain the adhesive in a discrete pattern during handling and storage and prevent lateral flow of the pressure sensitive adhesive under ambient conditions. The patterned adhesive may be transferred to an article directly from the recesses in the carrier by pressing the article onto the carrier web or indirectly by transferring the adhesive first to a cover sheet or to the flat backside of the web and thence to the article.
Claims28
An adhesive transfer tape comprising:
- a) a carrier having two oppositely parallel surfaces wherein a first of said surfaces contains a series of recesses therein and the second of said surfaces is smoother than said first surface, and
- b) a pressure sensitive adhesive in said recesses to provide segments of said adhesive in said recesses, said segments being surrounded by an area substantially free from said adhesive, so that when said tape is wound upon itself with said first surface contacting said second surface and thereafter unwound, said adhesive transfers from said recesses to said second surface.
An adhesive transfer tape comprising:
- a) a carrier having two oppositely parallel surfaces wherein one of said surfaces comprises a series of recesses therein, and
- b) a pressure sensitive adhesive in said recesses, to provide segments of said adhesive in said recesses, said segments being surrounded by an area substantially free from said adhesive, wherein as an article is pressed into contact with exposed adhesive in said recesses, the adhesive transfers to the article as said article is lifted from the tape.
Dependencies are inferred from the claim text.