×

Linerless pressure-sensitive adhesive tape having elastomeric backing

  • US 3,876,454 A
  • Filed: 03/28/1973
  • Issued: 04/08/1975
  • Est. Priority Date: 03/28/1973
  • Status: Expired due to Term
First Claim
Patent Images

1. A LINERLESS ELECRICALLY INSULATING TAPE WHICH HAS IMMEDIATE ADHESION TO INSULATION AND METAL CONDUCTOR SURFACES YET CAN BE WOUND UPON ITSELF AND STORED IN ROLL FORM FOR PROLONGED PERIODS AND CAN THEREAFTER BE UNWOUND WITHOUT DAMAGE THERETO, CONSISTING ESSENTIALLY OF IN COMBINATION, AN ELASTOMERIC BACKING SHEET HAVING A THICKNESS IN THE RANGE OF ABOUT 4 TO 50 MILS AND A TENSILE STRENGTH OF AT LEAST 200 POUNDS PER SQUARE INCH AND, COEXTENSIVE WITH AND FIRMLY UNITED TO ONE MAJOR SURFACE OF THE BACKING SHEET, A LAYER AT LEAST 0.4 MIL IN THICKNESS OF PRESSURE-SENSITIVE ELASTOMERIC ACRYLATE ESTER COPOLYMER ADHESIVE, SAID ELASTOMES BEING PHYSICALLY INCOMPATIBLE, SAID ADHESIVE HAVING ADHESION TO STEEL OF AT LEAST 3 OUNCES PER INCH WIDTH, SAID BACKING SHEET AND SAID ADHESIVE BEING SELECTED TO PROVIDE A STRIPPING DISTANCE OF GREATER THAN 1 INCH AND AN ELONGATION OF LESS THAN 100% WHEN A ONE INCH WIDE STRIP OF SAID BACKING SHEET, ADHERED UNDER PRESSURE OF A

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×