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Pattern coating of thick film pressure sensitive adhesives

  • US 5,773,080 A
  • Filed: 04/17/1997
  • Issued: 06/30/1998
  • Est. Priority Date: 04/17/1997
  • Status: Expired due to Term
First Claim
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1. A process for pattern coating a plurality of strips of adhesive onto a release web comprising the steps of:

  • feeding an adhesive into a feed manifold in a die assembly,the die assembly comprising;

    a die body having at least two exit ports in a front face of the die body; and

    at least two die cavity forming means, each of which receive adhesive exiting from at least one die body exit port, each die cavity forming means having at least one opening through which the adhesive can exit the die cavity forming means;

    passing a silicone-coated web under the openings of the die cavity forming means in the die assembly and depositing at least two non-contacting adhesive strips thereon;

    drying or curing the adhesive wherein the process of curing is selected from the group consisting of electron beam curing, ultraviolet curing and heat curing; and

    winding the adhesive coated web.

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