Manufacturing container or tube from paper; or other manufacturi – Container making – Pliable container
Patent
1981-03-16
1984-02-07
Coan, James F.
Manufacturing container or tube from paper; or other manufacturi
Container making
Pliable container
1565833, 493207, 493209, B31B 164
Patent
active
044300697
ABSTRACT:
Opposed strips of heat-sealable thermoplastic strips are advanced along a path past a pouch-forming and incomplete cut-out zone, a filling zone and a pouch-sealing and cut-off zone. Each incompletely cut-out pouch has a spout whose open end extends to opposed marginal bands of the strips. Nozzles are projected into the spouts at the filling zone. A tight fit of the nozzles in the spouts prevents escape of fluid around the nozzles during the filling operation. The marginal bands of the strips are gripped adjacent each spout to enable the nozzles to be pushed into the spouts. The filled pouches settle onto a conveyor while the marginal bands hold the open ends of the spouts at a higher level, preventing discharge of fluid from the spouts until the filled pouches are sealed. Sufficient height of the spout opening above the mean level of the filled body of each pouch tends to form a discharge-blocking pinch across the spout, and a still-higher level of the spout opening prevents the discharge of fluid by gravity. Filling nozzles extend in opposite directions toward the centerline of the strips for insertion into oppositely directed spouts where the pouches are formed at successive positions along the strips and each slender spout lies between the bodies of neighboring pouches. Multiple pouches can be formed simultaneously by multiple seam-forming and cut-out reciprocating dies. Composite cut-out dies, and seam-forming dies are heated to relatively high and lower temperatures, respectively, and the dies press the thermoplastic strips against a heat-resistant rubbery platen.
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