Manufacturing container or tube from paper; or other manufacturi – Container making – Rigid container
Patent
1997-12-30
1999-10-26
Vo, Peter
Manufacturing container or tube from paper; or other manufacturi
Container making
Rigid container
493143, 493124, 493171, B31B 162
Patent
active
059719060
ABSTRACT:
A tray forming apparatus and method are provided which advantageously increase the quality and production speed of tray type containers. The apparatus takes a precut paperboard blank through loading, forming, glueing, and compressing phases of operation to form a tray, which phases include conveying blanks from a stacked position to forming the blanks in a partially folded position, gluing using only a single pair of glueing heads for minor panels of the blank, and compressing the folded blank for securing the folds in a structural position sufficient for relying on the strength of the paperboard during the stacking of loaded trays. The tray forming apparatus includes suction cup styled conveyors for moving the blank from a stored position to a position for folding, a platen that contacts a bottom panel of the blank and moves the blank through fold guiding arms for positioning the blank in a partially folded position between guide rails for movement downstream to additional folding arms that hold major panels and minor panels in a position for adding adhesive to the major panels just prior to compression of the partially folded blank into its fully folded position. By applying adhesive just prior to compression of the panels, and by securing the panels in a structurally sound position, the adhesive is effective in securing the blank into its fully formed tray and to forming the tray with folds that provide the structural support necessary to support stacking fully loaded trays without depending on the adhesive for such stacking.
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Herrin Robert M.
Tharpe, Jr. Johnny M.
Luby Matthew
Vo Peter
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