Method and apparatus for the forming, sealing and closing of packages utilizing blanks created from fiberboard substratum to which sheeting having thermoplastic characteristics is laminated by a moisture-resistant heat-weakenable substance, such as microcrystalline wax. A tubular blank having an interior sheeting lining is first formed from the flat blank, as by forming a fin-type side seam which may be located in one body wall. The end closure is formed by panels hinged to each of the four body walls, with one of these panels serving as the main closure panel and being of sufficient size to overlie the entire end opening. A pair of gusset panels flank the main panel and a short flange panel is hinged to the opposite, parallel body wall. After outfolding the gussets and the flange panel, a continuous membrane seal is created along the three edges of the end opening by heat-sealing the sheeting associated with these panels. Delamination is effected during this heat-sealing, and after infolding the gussets and the flange panel, the main closure panel is secured in overlying position as by a hot melt adhesive.
This application is a continuation of Ser. No. 830,102, filed Sept. 2, 1977, now abandoned, which was a division of application Ser. No. 234,105, filed Mar. 13, 1972, now U.S. Pat. No. 4,046,308.
Priority Data
Mar 24, 1971 [GB] 7709/71 Apr 21, 1971 [GB] 10351/71 Apr 21, 1971 [GB] 10352/71 Jun 09, 1971 [GB] 19550/71
An insulation assembly includes an elongated batt of fibrous insulation material having two opposed major surfaces, where the batt has a first facing secured on its first major surface. The first facing extends beyond the side edges of the batt to form opposed flanges suitable for attaching the insulation assembly to a building structure. The batt has a second facing secured on its second major surface, with the second facing extending beyond the side edges of the batt to form opposed flanges suitable for attaching the insulation assembly to a building structure. The method of making an insulation assembly includes moving a pack of fibrous insulation material along a path, where the fibrous insulation material has two opposed major surfaces. A continuous encapsulation material is applied to the pack, and a portion of the encapsulation material is continuously gathered to form a two part fold. The two parts of the fold are bonded together to form a flange suitable for attaching the insulation assembly to a building structure.
An insulation assembly includes an elongated batt of fibrous insulation material having two opposed major surfaces, where the batt has a first facing secured on its first major surface. The first facing extends beyond the side edges of the batt to form opposed flanges suitable for attaching the insulation assembly to a building structure. The batt has a second facing secured on its second major surface, with the second facing extending beyond the side edges of the batt to form opposed flanges suitable for attaching the insulation assembly to a building structure. The method of making an insulation assembly includes moving a pack of fibrous insulation material along a path, where the fibrous insulation material has two opposed major surfaces. A continuous encapsulation material is applied to the pack, and a portion of the encapsulation material is continuously gathered to form a two part fold. The two parts of the fold are bonded together to form a flange suitable for attaching the insulation assembly to a building structure.
A carton blank for forming a leakproof carton comprising an outer enclosure formed from a relatively rigid material an openable top a closed bottom and a central body and a leakproof inner liner having a central body portion secured to the central body of the outer enclosure, a closed bottom and an openable closed top so that after portions of the material in the carton have been removed the top portion and adjacent portions of the inner liner's central body may be separated from the central body of the outer enclosure and folded downwardly to protect the remaining material in the carton. In one embodiment, after all the material has been removed from the carton, the leakproof inner liner may be completely removed from the outer enclosure.
A carton, formed from a unitary sheet of a relatively rigid material having a sheet of a relatively flexible fluid impervious material secured thereto and wherein a top portion of the sheet of a relatively flexible fluid impervious material extends upwardly from a common plane formed below the fold lines of the top panels of the unitary sheet of a relatively rigid material, wherein the top portion of the sheet of a relatively flexible fluid impervious material has facing surfaces adjacent to the top edge thereof that can be folded over two times to form a folded portion lying substantially in a plane parallel to the common plane.
A carton blank and a leakproof carton formed therefrom which carton has an outer enclosure formed from a relatively rigid material and having an openable top portion and a closed bottom portion and a leakproof inner liner having a central body portion secured to an opposed central body of the outer enclosure, a closed bottom and an openable closed top so that after portions of the material in the carton have been removed the top portion and adjacent portions of the inner liner's central body may be separated from the central body of the outer enclosure and folded downwardly to protect the remaining material in the carton. In one embodiment, after all the material has been removed from the carton, the leakproof inner liner may be completely removed from the outer enclosure.
