초록 ▼

An insulating paperboard container is disclosed including a container body having a side wall and a bottom wall with the one side wall including a base layer and an insulating layer on at least a portion of the base layer, preferably on an inside surface of the side wall. The insulating layer being

An insulating paperboard container is disclosed including a container body having a side wall and a bottom wall with the one side wall including a base layer and an insulating layer on at least a portion of the base layer, preferably on an inside surface of the side wall. The insulating layer being selectively adhered to at least a portion of the base layer such that the selective adhering of the insulating layer to the base layer creates air pockets between the insulating layer and the base layer with the air pockets being expandable in response to contact with a heated liquid. Such a container is formed from an insulating stock material comprising a paperboard base layer and an insulating layer overlying at least a portion of at least of one surface of the base layer with the insulating layer being selectively adhered to the surface of the base layer forming enclosed regions between the base layer and the insulating layer. In order to ensure the formation of pronounced air pockets between the insulating layer and the base layer, the paperboard base layer may be debossed, creating debossed regions with the insulating layer being adhered over the openings of the debossed regions.

대표청구항 ▼

[ We claim:] [1.]1. A paperboard heat insulating container comprising:a container body having at least one side wall and a bottom wall, said at least one side wall includinga base layer having an inside surface and an outside surface; andan insulating layer forming an innermost layer of said side wa

[ We claim:] [1.]1. A paperboard heat insulating container comprising:a container body having at least one side wall and a bottom wall, said at least one side wall includinga base layer having an inside surface and an outside surface; andan insulating layer forming an innermost layer of said side wall selectively adhered to at least a portion of said inside surface of said base layer;wherein said selective adhering of said insulating layer to said inside surface of said base layer creates air pockets between said insulating film and said base layer, said air pockets being expandable in response to contact with heated contents of the container.