Insulated stock material and containers and methods of making th

Details Insulated stock material and containers and methods of making th Insulated stock material and containers and methods of making th

1997-04-11

1998-11-24

Dye, Rena L.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156 78, 264 451, 264 456, B32B 518

Patent

active

058401393

ABSTRACT:
An insulating container comprising a container body having at least one side wall and a bottom wall with the side wall including a base layer, an insulating layer on at least a portion of the base layer and a printed pattern, mineral oil application or combination thereof on at least a portion of the surface of the insulating layer is disclosed wherein a thickness of the insulating layer is controlled by the printed pattern and/or mineral oil on the selected portion of the insulating layer. Similarly, stock material incorporating the present invention includes a base layer, an insulating layer formed on at least a portion of the base layer and a printed pattern printed on and or mineral oil applied to the insulating layer is disclosed wherein the thickness of the insulating layer is again controlled by the printed pattern and/or mineral oil on the portion of the insulating layer. The container may be formed of pre-manufactured stock material, by unexpanded stock material or by forming a container body from a paper or paperboard material including a bottom wall and at least one side wall, coating at least the side wall portion of the container body with a thermoplastic synthetic resin film and subsequently printing a pattern on the surface of the thermoplastic synthetic resin film. Once formed, the container is heated at a predetermined temperature for a predetermined time period sufficient to form a heat-insulating layer on the outer surface of the container by expanding the thermoplastic synthetic resin film. The expansion of the thermoplastic synthetic resin is controlled by a thickness of the printed pattern placed thereon, the mineral oil coating or a combination thereof.

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patent: 5547124 (1996-08-01), Mueller
patent: 5766709 (1998-06-01), Geddes et al.

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