Stock material for container body of insulating paper container, insulating paper container and process for making them
AssigneeSanyo Pax Kabushiki Kaisha
InventorsHIROMI WATANABE, ISAO KUWAHARA
Life of this patent
Estimating the term…
Abstract
An insulating paper container's body has a low m.p. thermoplastic synthetic resin film laminated on its outer wall surface and a compatibly expansile ink applied to the outer surface either as a primer or as indicia to provide stock material improved in its printability for bar codes or the like as well as in its insulating property. In addition there is provided a process for making such stock material.
Claims144
A process for making stock material for a container body of an insulating paper container, said process comprising the steps of:
- laminating a low m.p. thermoplastic synthetic resin film expandable by a heating treatment on an outer wall surface of a base paper forming stock material for an insulating paper container;
- and
- applying to the surface of said low m.p. thermoplastic synthetic resin film a compatibly expansile ink adapted to be expansile compatibly with the expansion of said film.
Stock material for a container body of an insulating paper container, said stock material comprising:
- base paper;
- a high m.p. thermoplastic synthetic resin film laminated on the inner wall surface of said base paper;
- a low m.p. thermoplastic synthetic resin film laminated on the outer wall surface of said base paper wherein said low m.p. thermoplastic synthetic resin film is expandable by heat treatment;
- and
- a compatibly expansile ink applied on an outer surface of said low m.p. thermoplastic synthetic resin film.
An insulating paper container generally comprising a container body and a bottom wall, said insulating paper container further comprising:
- a high m.p. thermoplastic synthetic resin film laminated on the inner wall surface of a base paper for said container body and said bottom wall;
- a low m.p. thermoplastic synthetic resin film laminated on the outer wall surface of said base paper for said container body;
- a compatibly expansile ink applied on the outer surface of said low m.p. thermoplastic synthetic resin film so that said ink may follow expansion of said low m.p. thermoplastic synthetic resin film;
- and
- wherein said low m.p. thermoplastic synthetic resin film is expanded by subjecting the lamination to heating treatment.
A process for making an insulating paper container generally comprising a container body and a bottom wall, said process comprising steps of:
- laminating a high m.p. thermoplastic synthetic resin film on the inner wall surface of base paper for said container body and bottom wall;
- laminating a low m.p. thermoplastic synthetic resin film on the outer wall surface of the base paper for said container body;
- applying to the outer surface of said low m.p. thermoplastic synthetic resin film a compatibly expansile ink so that said ink may follow expansion of said low m.p. thermoplastic synthetic resin film;
- and
- after the container has been formed by said container body and bottom wall, expanding said low m.p. thermoplastic synthetic resin film by subjecting the lamination to heating.
Dependencies are inferred from the claim text.