Heat insulating paper cups

Details Heat insulating paper cups Heat insulating paper cups

1998-06-01

2000-10-10

Kim, Eugene

Manufacturing container or tube from paper; or other manufacturi

Container making

Rigid container

493903, B31B 100, B31B 1700, B31B 700

Patent

active

061296538

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.

REFERENCES:
patent: 4435344 (1984-03-01), Iioka
patent: 5145107 (1992-09-01), Silver et al.
patent: 5363982 (1994-11-01), Sadlier
patent: 5490631 (1996-02-01), Ioka et al.
patent: 5725916 (1998-03-01), Ishii et al.
patent: 5766709 (1998-06-01), Geddes et al.

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