Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Presses or press platen structures – per se
Patent
1984-12-14
1986-08-19
Wityshyn, Michael
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
Presses or press platen structures, per se
156 731, 1565802, 228 11, 264 23, 4251742, B29C 6508
Patent
active
046067868
ABSTRACT:
An arrangements for ultrasonic sealing comprises a sealing jaw which is combined with an ultrasonics source and a counterjaw. During the sealing the parts which are to be sealed to each other are pressed together between working surfaces of the jaws with simultaneous activation of the ultrasonics source as a result of which the parts are welded together. In the sealing of thin material layers it is very difficult to obtain a uniform compression over the whole surface which means that the risk of burning asunder or unsatisfactory sealing increases. In the invention this is prevented with the help of supporting elements which engage with two stop faces located in the nodal plane of the sealing jaw and on the one hand determine the minimum distance between the working surface, and on the other hand orientate the flexibly suspended jaw so that the working surfaces are parallel.
REFERENCES:
patent: 3431593 (1969-03-01), Miller
patent: 3647599 (1972-03-01), Gardner
patent: 3683470 (1972-08-01), McMaster et al.
Tetra Pak International AB
Wityshyn Michael
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