Abstract:
The disclosure relates to a machine for making a plastic covering on a rigid base article which in the illustrated form comprises a glass bottle and a conforming shrunken plastic covering thereon. The plastic is fed in oriented sheet form to the turret apparatus, cut into lengths and wrapped and seamed on successive mandrels as sleeves. Bottles are simultaneously processed to preheat condition and indexed over the sleeves, the latter telescopically assembled on the rigid base article, i.e. the bottle, and the combination carried to a heat tunnel. The plastic sleeve shrinks into snug surface fit on the adjacent surface portion of the rigid base article. The bottle is preheated in one of two embodiments by: 1. A PREHEAT TUNNEL ON THE MACHINE WHICH RAISES THE BOTTLES FROM ROOM TEMPERATURE TO ABOUT 220*F, or (2) the preheat is carried over as latent heat in the glass bottle from the annealing lehr, a part of the bottle manufacturing process. The machine includes novel subassemblies comprised of (1) a bottle chuck and loading station for assuring proper loading of the bottles on the machine, (2) bottle handling, (3) plastic strip handling and feed mechanism for placing oriented cut lengths onto mandrels of the turret, (4) the turret for making seamed sleeves in succession and feeding them onto registered bottles carried by the bottle handling apparatus, and (5) unloading device for transfer of the covered bottles to a conveyor and with said transfer smoothening the bottom surface of the covering on the bottle.
Abstract:
The disclosure relates to a machine for making a plastic covering on a rigid base article which in the illustrated form comprises a glass bottle and a conforming shrunken plastic covering thereon. The plastic is fed in oriented sheet form to the turret apparatus, cut into lengths and wrapped and seamed on successive mandrels as sleeves. Bottles are simultaneously processed to preheat condition and indexed over the sleeves, the latter telescopically assembled on the rigid base article, i.e. the bottle, and the combination carried to a heat tunnel. The plastic sleeve shrinks into snug surface fit on the adjacent surface portion of the rigid base article. The bottle is preheated in one of two embodiments by: (1) a preheat tunnel on the machine which raises the bottles from room temperature to about 220*F, or (2) the preheat is carried over as latent heat in the glass bottle from the annealing lehr, a part of the bottle manufacturing process. The machine includes novel subassemblies comprised of (1) a bottle chuck and loading station for assuring proper loading of the bottles on the machine, (2) bottle handling, (3) plastic strip handling and feed mechanism for placing oriented cut lengths onto mandrels of the turret, (4) the turret for making seamed sleeves in succession and feeding them onto registered bottles carried by the bottle handling apparatus, and (5) unloading device for transfer of the covered bottles to a conveyor and with said transfer smoothening the bottom surface of the covering on the bottle.
Abstract:
A printer for cups or similar articles, or articles with a surface of revolution having a straight line generatrix, has a helical printing plate. The articles are advanced along a line parallel to the axis of the plate and the sidewall is imprinted while it follows a substantially helical path. Cups or containers are fed through in partially nested condition.
Abstract:
The disclosure relates to a method of making a container comprised of a glass bottle and a plastic covering thereon. The plastic is processed into sheet form and highly oriented for shrink property along one dimension. A minor orientation (onehalf or less) is provided in the other dimension. The sheet is pre-printed and formed into strips fed to a mandrel-type machine for making individual, lap-seamed, cylindrical sleeves of the plastic, the major shrink orientation being oriented circumferentially of the sleeve. The sleeves are telescopically located to a predetermined height on a rigid base article, a bottle that has been preheated to around 220*F and the sleeve and bottle carried into an oven for shrinking the plastic onto the bottle. Differential surface skin is provided in the plastic, the greater depth skin being placed next to the bottle.
Abstract:
A two-piece plastic container is fabricated by selecting a sheet of expanded plastic material having an integral skin, the skin having a density approaching that of the basic unfoamed plastic, while the intermediate body of foamed plastic has a relatively low density of the order of 11-14 lbs./cu.ft. and a cell size of from about 0.2 to about 0.3 mm., the overall thickness of the sheet being about 0.030 inch to about 0.050 inch. Blanks are cut from the aforesaid sheet, treated with a solvent along the margins at the bottom and end, and folded around a mandrel to bring opposite ends into overlapping position with the solvent therebetween whereupon the overlapped ends are pressed together to form a seam. A bottom member is solvent sealed to the bottom edge of the side wall blank.
Abstract:
The present invention relates to a method and apparatus for forming articles from a web of single-ply or laminate plastic material that may have information thereon, and which information is to be in register with the article formed.
Abstract:
Molded pulp plate having continuous unseamed liner of polypropylene film bonded to its interior surfaces by pigmented polyamide ink, or a pigmented resin emulsion, which serves as adhesive and also provides all or part of a decorative design visible through the transparent film. Underside of polypropylene film may have further decorative printing of conventional ink, the adhesive being printed or coated thereover. Method includes clamping a sheet of polypropylene film, having the dried resin adhesive on its underside surface, against the smooth rim of the plate; heating the plate and film to a temperature which is above the softening point temperature of the resin constituent of the pigmented coating but below the softening point temperature of polypropylene; and drawing a vacuum through the bottom of the plate to press the film against the interior surfaces of the plate.