The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 18, 1989
Filed:
Dec. 08, 1986
John M Dubowik, Nashua, NH (US);
Velcro Industries B.V., Amsterdam, NL;
Abstract
Apparatus for attaching touch fastener material capable of self-bonding to a porous surface such as fabric and the like by the application of an electrical current therethrough. The material comprises a backing material with front and rear surfaces and having one portion of a touch fastening system on the front surface thereof. A layer of thermoplastic and thermosetting adhesive is bonded to the rear surface. Heat generating means are incorporated into the layer of adhesive for producing sufficient heat in the adhesive when a low voltage and high current electrical source is applied therethrough to cause the adhesive to adhere to a porous surface with which it is in contact. In one embodiment, the heat generating means comprises a strip of metal foil embedded within the layer of adhesive. In a second embodiment, the heat generating means comprising a plurality of electrically conductive/resistive particles embedded within the layer of adhesive. The apparatus includes embodiments having a roller and band moving in combination, a pair of opposed rollers, and mirror imaged feet moving in the manner of a sewing machine drive foot. Each embodiment includes contact pins for contacting the adhesive passing low voltage high current electricity therethrough.