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Hot melt pressure sensitive adhesive and diaper tape closures coated therewith

  • US 4,411,954 A
  • Filed: 08/16/1982
  • Issued: 10/25/1983
  • Est. Priority Date: 08/16/1982
  • Status: Expired due to Term
First Claim
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1. Pressure sensitive tape comprising a sheet backing coated with a layer of normally tacky and hot melt pressure-sensitive adhesive comprising(a) 15 to 40% by weight of a mixture of an A-B-A styrene-isoprene-styrene copolymer and a selectively hydrogenated A-B-A type block copolymer wherein the non-elastomeric block A units in both A-B-A copolymers are present in amounts less than about 25% by weight and wherein the weight ratio of the styrene-isoprene-styrene copolymer to the selectively hydrogenated copolymer is within the range of 10:

  • 90 to 40;

    60;

    (b) 30 to 70% by weight of a tackifying resin;

    (c) 5 to 30% by weight of a plasticizing oil or liquid polyterpene tackifying resin; and

    (d) 0.05 to 2.0% by weight of an antioxidant.

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