Method for fabricating heat insulating paper cups

A method for fabricating a heat insulating paper container from a paper-based body member with an inside surface and an outside surface, and a paper-based bottom panel member with an upper surface and a bottom surface, said method comprising:

• applying to the inside surface of said body member an inside surface laminate of a synthetic resin effective to prevent penetration of liquid into the paper during use, and applying to said outside surface an outside surface laminate of foamable synthetic resin;
• printing at least a portion of the outside surface of said body member having applied thereto an outside surface laminate, with a water-based alkyd or epoxy ink, or with a water-based ink which contains both an epoxy and an alkyd;
• and
• fabricating said container so that said body member is bonded to said bottom panel member, and said outside surface laminate of synthetic resin is foamed;
• wherein the water-based ink is selected in an amount which provides a printed foam caliper averaging at least about 85% of unprinted area foam caliper for a single layer of ink.