Special receptacle or package – With pallet feature – Knockdown or collapsible type
Patent
1987-04-10
1987-12-15
Marcus, Stephen
Special receptacle or package
With pallet feature
Knockdown or collapsible type
229137, B65D 506
Patent
active
047127279
ABSTRACT:
A gable-top thermoplastic coated container with controllably enhanced sealing and opening characteristics includes at least one fillet attached to the gable rib panels and/or roof rib panels which form the spout. The fillet comprises a thin strip of stiff material coated with a layer of adhesive. The strip is resistant to the thermal carton-sealing process, and extends along a portion of the panel length to increase the applied opening force which may be transmitted to the tip of the spout where the gable rib panels are adjoined and prevent buckling of the spout panels. The unadhered surface of the strip does not strongly adhere to the opposing thermoplastic coated panel, so that the spout may be opened with a controlled low force, without tearing or delamination of the carton panels. The portion of the fillet-carrying panel not covered by the fillet will bond to the opposing panel by thermoplastic fusion. Preferably, the adhesion layer is of such a thickness that a portion thereof is extruded during the carton sealing process, forming a bead of adhesive along the edges of the strip to bond the gable rib panels to the roof rib panels. The result is a hermetic seal which is readily opened without destruction of the spout panels.
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Elkins Gary E.
Marcus Stephen
Minnesota Mining and Manufacturing Company
Schultz Leland D.
Sell Donald M.
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