Method of making a container employing inner liner and vents for thermal insulation

A method of making a container blank suitable for preparing an insulated container:

• a) providing a container material web comprising paperboard, wherein the web is of a sufficient width to provide one or more container blanks cuttable from the web;
• b) cutting the container material web so as to provide one or more vents in a sidewall of one or more container blanks cuttable from the web;
• c) providing a shrink film web, wherein the shrink film is activatable by contact with a hot material having an initial temperature of from about 130° F. to up to about 212° F.;
• d) applying an adhesive in an adhesive pattern to the shrink film web, wherein the pattern coincides with a perimeter of one or more container blanks cuttable from the shrink film web, thereby providing one or more adhesive patterns on the shrink film web;
• e) marrying the shrink film web with the container material web, thereby providing container material-shrink film laminate, wherein the container material is adhered to the shrink film web in the locations defined by the adhesive pattern;
• f) cutting the container material-shrink film laminate to provide one or more container blanks, wherein the container blanks comprise one or more vents in a location within a perimeter defined by the adhesive pattern, wherein the one or more vents substantially eliminate the formation of a vacuum in a space between the container material web and the shrink film during an activation of the shrink film;
• wherein the container blank is suitable for preparing an insulated container.