Apparatus for producing bags of plastics material

Details Apparatus for producing bags of plastics material Apparatus for producing bags of plastics material

1979-07-12

1981-09-08

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With work cooling means

156499, 156515, 156522, 156538, 156540, 156547, B32B 3104

Patent

active

042882796

ABSTRACT:
Apparatus for producing a bag of plastics material having an opening closable by a flap which is provided with a band of adhesive for securing the flap to the bag after closing of the opening, the band of adhesive being covered by a releasable strip of plastics material. The apparatus includes a reel holder for rotatably supporting a reel of the releasable strip, a first guide for feeding the strip in succession passed an adhesive applicator for applying a band of adhesive to one side of the strip, a second guide for guiding a continuous length of folded plastics material for forming the bag to heat a severing mechanism which operates to sever separate bags from the continuous length of material and also fuse together the edges of each separated bag, a pressure mechanism situated to apply the strip to the continuous length of material so that the strip is secured by the band of adhesive to the continuous length of material before it is fed to the severing mechanism, and a reel holder including a table rotatable about a vertical axis and arranged to support the reel horizontally. A brake mechanism is provided for restraining the rotation of the table so that the strip is tensioned as it is pulled off the reel.

REFERENCES:
patent: 1904874 (1933-04-01), Meader
patent: 2625287 (1953-01-01), Holt et al.
patent: 3518152 (1970-06-01), Storti
patent: 3560310 (1971-02-01), Bolton
patent: 3746596 (1973-07-01), Van Hart

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