Elastic band applicator and sheet folder

Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With bending – folding – winding – or wrapping means

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Details

156471, 156496, 156554, 156578, 156494, 156581, 156264, B32B 3100, B32B 3104, B31F 500, B29C 1900

Patent

active

044926081

ABSTRACT:
In an elastic band applicator for diapers using hot melt glue, a longitudinally tensioned moving plastic backing sheet is run over a roll that is parallel to and spaced from a stationary cylinder. A shoe deflects the central region of the sheet away from its plane at a location between the roll and cylinder. This results in the margins of the sheet beyond opposite ends of the shoe becoming loose flaps. Glue stripes are applied by means of nozzles to the sheet near its edges before the sheet encounters the shoe which has passageways for the glue stripes. Elastic bands are fed into the passageways onto the glue stripes. After passing the shoe, the margins encounter plows which turn or fold the margins over the glue stripes and bands and press the sheet against a cylinder to smooth the margin. Means are provided for retracting the sheet away from the hot nozzles if the sheet stops moving.

REFERENCES:
patent: 3298353 (1967-01-01), Huffman
patent: 3553053 (1971-01-01), Good
patent: 3837972 (1974-09-01), Schuster
patent: 3984272 (1976-10-01), Teed
patent: 4081301 (1978-03-01), Buell
patent: 4240866 (1980-12-01), Rega
patent: 4261782 (1981-04-01), Teed
patent: 4300967 (1981-11-01), Sigl
patent: 4353762 (1982-10-01), Bouda
patent: 4412881 (1983-11-01), Sigl

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