Pick up a glass bottle with plastic process to form a tubular sleeve plastica encolhivel, process of applying a protective sleeve, and the process of Fab

摘要

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 (one-half 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 DEG 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. Bottle heat is furnished either: (1) by an auxiliary pre-heat oven, or (2) by heat of formation of the container in its manufacture, such as obtained in the annealing lehr. The initial placement of the sleeve allows a bottom end overlap of the sleeve on the bottle and shrinking the plastic results in covering the bottle at least along its body, bottom corner and onto the bottom end at an annular bearing surface thereon.