Heat insulating paper cups

Details Heat insulating paper cups Heat insulating paper cups

2007-03-27

2007-03-27

Miggins, Michael C. (Department: 1772)

Stock material or miscellaneous articles

Hollow or container type article

Paper containing

C428S036500, C428S159000, C428S349000, C428S511000, C428S537500, C229S400000, C229S403000, C493S084000, C493S093000, C493S095000, C493S096000, C493S099000

Reexamination Certificate

active

10734238

ABSTRACT:
A heat insulating paper cup having an improved seal. 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 (or in some instances partially coated) on its outside surface with a foamed low density polyethylene, and on its inside surface with an unfoamed modified low density polyethylene. The bottom panel member is coated on its upper surface with a foamed or an unfoamed low density polyethylene or foamed or unfoamed modified low density polyethylene. The body member and bottom panel member are oriented and joined to form a heat seal at an interface between a portion of the unfoamed modified low density polyethylene coated on the inside surface of the body member and a portion of unfoamed low density polyethylene or unfoamed modified low density polyethylene coated on the upper surface of the bottom panel member.

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