POROUS PRESSURE SENSITIVE ADHESIVE AND TAPES
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United States of America Patent
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Issued Date -
Apr 9, 2009
app pub date -
Oct 8, 2008
filing date -
Oct 9, 2007
priority date (Note) -
Abandoned
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Abstract
A pressure sensitive adhesive includes a substantially continuous polymer phase having pressure sensitive adhesive properties, and a plurality of pores arranged within the substantially continuous polymer phase and disposed to permit fluid to pass from a first side through at least a portion of the plurality of pores to a second side. The plurality of pores is substantially resistant to cold flow. A method of forming a porous pressure sensitive adhesive tape includes providing a solution for forming an adhesive having pressure sensitive adhesive properties, the solution including a pore forming material, casting a film comprising the solution, laminating a liner on the film, and exposing the adhesive to an energy source to form pores in the adhesive and cure the adhesive to form the pressure sensitive adhesive tape.
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