Package making – With cover-adjunct application or formation – By printing
Patent
1974-12-10
1976-06-29
Spruill, Robert L.
Package making
With cover-adjunct application or formation
By printing
53 29, B65B 102, B65B 904
Patent
active
039656519
ABSTRACT:
A method of forming packages in which a first thermoformable strip is provided with a plurality of parallel longitudinal grooves or depressions, the grooves are filled with a material to be packaged, and the grooves are then covered by a sealing a second, flat strip to the regions of the first strip between the grooves and along the edge margins thereof. The grooves are formed sequentially from the center of the first strip outwardly toward the side edges in pairs. The filled and covered continuous article is then transversely sealed and severed into individual packages. A machine for performing this method includes a forming plate having a longitudinal parallel grooved surface, means for moving the strip along the surface, and a plurality of forming rolls, each roll having pairs of annular ridges which press the strip into the grooves on the plate to form the depression. The first one of the rolls has a pair of such ridges near and straddling the centerline of the strip, the second has an additional pair spaced outwardly farther from the centerline, the third has another pair, and so forth, so that the depressions are formed sequentially from the center of the strip outwardly. The forming plate can be heated and adjustable to vary the spacing thereof from the rolls. A cooling plate is provided downstream of the forming plate, along with filling, sealing and severing means, and means for driving the rolls.
REFERENCES:
patent: 2384492 (1945-09-01), Rebechini
patent: 2793676 (1957-05-01), Hubmeier
patent: 3020687 (1962-02-01), Joa
patent: 3178494 (1965-04-01), Tisdale
patent: 3314110 (1967-04-01), Missbach
patent: 3645066 (1972-02-01), Drygulski
patent: 3808772 (1974-05-01), Turtschan
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