Process for producing flattened gusseted tubing from flat plasti

Details Process for producing flattened gusseted tubing from flat plasti Process for producing flattened gusseted tubing from flat plasti

1989-06-21

1990-09-25

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156465, 493226, B32B 3116

Patent

active

049591142

ABSTRACT:
In a process for producing flattened gusseted tubing from a flat continuous film of synthetic thermoplastic, gussets are formed in the flat continuous film in such a manner that lateral marginal portions of the film are superposed adjacent to the outer edge of a covering gusset. A portion of the covering gusset is then reversely folded on itself, the marginal portions are subsequently provided with a longitudinal seam weld in a region which was aligned with the outer edge of the covering gusset before the gusset portion was reversely folded, and the reversely folded portion is then unfolded.

REFERENCES:
patent: 3593622 (1971-07-01), Sengewald
patent: 4571235 (1986-02-01), Benoit
patent: 4597749 (1986-07-01), O'Brien et al.

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