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:
Aug. 23, 1983
Filed:
Jan. 26, 1982
Coenraad E Riemersma, Cincinnati, OH (US);
The Procter & Gamble Company, Cincinnati, OH (US);
Abstract
An improved method and apparatus for bonding together juxtaposed webs which are subject to being ultrasonically bonded together such as, for example, thermoplastic films or non-woven thermoplastic webs or elastomeric films to form a laminate as the webs are being driven forward at a relatively high velocity. The apparatus includes an ultrasonic horn and a power-rotated anvil cylinder which define a bonding passageway therebetween, and a rotatable pressure roll which is biased towards the anvil adjacent the downstream end of the bonding passageway to apply a predetermined level of compressive force to the bonded regions of the laminate issuing from the passageway before the bonds in the bonded regions become fully set upon cooling. In a preferred apparatus embodiment of the invention the anvil has a relief-type bonding pattern on its circumferential surface; and the pressure roll is sufficiently rigid and so configured and disposed that substantially only the portions of the laminate juxtaposed raised elements of the bonding pattern are subjected to such post-bonding compression.