Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1982-01-26
1983-08-23
Wityshyn, Michael G.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156290, 1563084, 156324, 156553, 156555, 1565801, 1565802, 156582, 264 23, 4251742, B29C 2708, B32B 3120
Patent
active
044002270
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.
REFERENCES:
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patent: 3531361 (1970-09-01), Grandinetti
patent: 3575752 (1971-04-01), Carpenter
patent: 3844869 (1974-10-01), Rust, Jr.
patent: 3855045 (1974-12-01), Brock
patent: 3939033 (1976-02-01), Grgach
patent: 4246058 (1981-01-01), Reed
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Braun Fredrick H.
Slone Thomas J.
The Procter & Gamble & Company
Witte Richard C.
Wityshyn Michael G.
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