Polymeric liner ply for tubular containers and methods and appar

Details Polymeric liner ply for tubular containers and methods and appar Polymeric liner ply for tubular containers and methods and appar

1997-02-06

1998-12-08

Davis, Jenna

Stock material or miscellaneous articles

Hollow or container type article

Paper containing

428 343, 428349, 428354, 428355EN, 428355AC, C09J 702

Patent

active

058466193

ABSTRACT:
A method of manufacturing multi-ply tubular containers for food products is provided including the steps of advancing a continuous body ply formed of paperboard towards a shaping mandrel and advancing a continuous polymeric liner ply adjacent to one surface of the paperboard body ply. The polymeric liner ply includes a moisture barrier layer and an adhesive layer defining one surface of the liner ply, wherein the adhesive layer includes a polymeric adhesive which is activated at a predetermined activation temperature. The body ply is heated to a temperature above the activation temperature of the adhesive, and the body ply and the liner ply are then passed in face-to-face contact through a nip to adhere the liner ply to the body ply. The body ply and liner ply are then wrapped around a shaping mandrel to create the tubular container. Accordingly, an advantageous tubular container can be manufactured having an unsupported and polymeric liner ply which is adhered to a body ply without the application of any separate adhesives.

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