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Tearable composite strip of materials

  • US 4,245,630 A
  • Filed: 03/02/1979
  • Issued: 01/20/1981
  • Est. Priority Date: 10/08/1976
  • Status: Expired due to Term
First Claim
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1. A composite multi-layered strip of materials tearable into individual medical dressings of any desired length comprising:

  • a finger-tearable outer backing strip layer having an external surface and an internal surface;

    a finger-tearable adhesive layer disposed on said internal surface of said outer backing strip layer;

    a finger-tearable absorbent strip layer adheredly disposed on said adhesive layers, said absorbent strip layer being narrower than said outer backing strip layer so as to provide exposed margins of said adhesive layer on either side of said absorbent strip layer; and

    a finger-tearable outer protective strip layer having an external surface and an internal surface being peelably adherent to said exposed margins of said adhesive layer, each of said outer backing strip layer and said outer protective strip layer being programmed in like predetermined transverse directions to be cleanly finger tearable from any point along the length of said multi-layered strip material, one of said outer strip layers influencing transverse tear in said predetermined transverse direction of any layer adherent thereto, said outer backing strip layer influencing transverse tear in said predetermined direction of said absorbent strip layer and at least a portion of said adhesive layer serving to adhere to said absorbent strip layer whereby a joint tear in said predetermined transverse direction extending across one of said exposed margins propagates separately and coincidentally in the said outer strip layer over an unadhered portion of said outer backing strip layer with said outer protective strip layer to meet at the same point on the other of said exposed margins to continue the joint tear and to provide clearly defined separate units of any length of said composite multi-layered strip material while leaving the remaining portion of said composite multi-layered strip material with a clean transverse edge.

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