Arrangement for affixing the bottom of a thermoplastic container

Details Arrangement for affixing the bottom of a thermoplastic container Arrangement for affixing the bottom of a thermoplastic container

1982-03-22

1983-07-19

Wityshyn, Michael G.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Presses or press platen structures, per se

156 69, 156 731, 1565802, 228 1R, 493108, 493156, B29C 2708, B32B 3116

Patent

active

043942091

ABSTRACT:
An improved arrangement for weldingly connecting an annular connecting edge of a synthetic thermoplastic bottom to a cylindrical thermoplastic section to form a cylindrical container having one open end and one end which is closed by the bottom. The arrangement includes a supporting frame having a pair of confronting vertical wall portions. A first disc is rotatably mounted via a first shaft in a first vertical wall portion. A second hollow shaft is coaxially slidably and freely rotatably mounted with respect to the first shaft in a second confronting vertical wall. A counter pressure second disc is coaxially slidably freely rotatably mounted in the second hollow shaft. The thermoplastic bottom is adapted to be clampingly held between the first and second discs. At least one freely rotatable anvil roller is mounted on the second hollow shaft for engaging the connecting edge of the thermoplastic bottom or the inside wall of the cylindrical thermoplastic section. An ultrasonic welding device having a welding head is mounted on the machine frame and is adapted to weld the connecting edge to the thermoplastic cylindrical section.

REFERENCES:
patent: 3429028 (1969-02-01), Maropis et al.
patent: 3438824 (1969-04-01), Balamuth
patent: 3456564 (1969-07-01), McCandless
patent: 3604320 (1971-09-01), Duvall et al.
patent: 4187768 (1980-02-01), Suzuki
patent: 4226652 (1980-10-01), Berg

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