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US 6,308,883 B1Granted
Heat insulating paper cups
AssigneeFort James Corporation
InventorsMichael A. Schmelzer, Diana L. Penn, Mikel A. Ingram
Life of this patent
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AssigneeFort James Corporation
InventorsMichael A. Schmelzer, Diana L. Penn, Mikel A. Ingram
Estimating the term…
A heat insulating paper cup with improved insulation in areas where printed matter exists. The printed matter is applied using a water-based alkyd or epoxy ink. In one embodiment the cup can include a body member having an inside surface and an outside surface, and a bottom panel member having a upper surface and a bottom surface. The body member is coated on its outside surface with a foamed synthetic resin, and on its inside surface with an unfoamed synthetic resin. The bottom panel member is optionally coated on its upper surface with a foamed or an unfoamed synthetic resin. The body member and bottom panel member are oriented and joined to form a seal at an interface between a portion of inside surface of the body member and a portion of the upper surface of the bottom panel member. The printed matter is applied prior to foaming of the synthetic resin on the outer surface of the cup.
A heat insulating paper-based container comprising a body member with an outside surface laminate of synthetic resin, at least a portion of which is foamed, wherein at least a portion of the foamed surface laminate includes applied indicia derived from a water-based alkyd or epoxy ink, or from a water-based ink which contains both an epoxy and an alkyd, and wherein the at least a portion of the foamed surface laminate including applied indicia has a foam caliper averaging at least about 85% of the foam caliper in the foamed portion not containing applied indicia for a single layer of ink.
A heat insulating paper-based container comprising a body member with an outside surface laminate of synthetic resin, at least a portion of which is foamed, wherein at least a portion of the foamed surface laminate has applied thereon indicia derived from an ink effective to provide a printed foam caliper averaging at least about 85% of unprinted area foam caliper for a single layer of ink.
Dependencies are inferred from the claim text.