Manufacturing container or tube from paper; or other manufacturi – Tube making – With cutting – breaking – tearing – or abrading
Patent
1979-09-07
1981-03-17
Coan, James F.
Manufacturing container or tube from paper; or other manufacturi
Tube making
With cutting, breaking, tearing, or abrading
493111, 493196, 493235, B31B 4900, B31C 100
Patent
active
042560284
ABSTRACT:
This invention relates to method and apparatus for making plastic tubular preforms for assemblying bottles or other containers into individual mutli-unit packages. The bottles for an integral multi-container package are arranged in a tightly-assembled group and the tubular preform is placed around the group. The tubular preform is formed from a lengthy sheet of flexible heat-shrinkable thermoplastic material which preferably is comprised of a composite foam and film laminate with the preform having a thermal fusion seal extending in an axial direction. The preform is flat-folded with a pair of axial pleated folds in diametrically opposite sides and then double-folded centrally for use in multiple unit packaging of like containers. The preforms has a primary orientation in a circumferential direction and a secondary orientation in an axial direction making it particularly useful when fully opened for heat shrinking around a group of like containers. This invention pertains to the method and apparatus for making such tubular preform which in heat-shrunken condition forms a tight package convenient for handling, shipment and use.
REFERENCES:
patent: 2163318 (1939-06-01), Scusa et al.
patent: 3252387 (1966-05-01), Schur
patent: 3352214 (1967-11-01), McColgan
patent: 3400810 (1968-09-01), Makowski
patent: 3507094 (1970-04-01), Coles
patent: 3656274 (1972-04-01), Vind
patent: 3762282 (1973-10-01), Van der Meulen
patent: 3834525 (1974-09-01), Morgese et al.
patent: 3855907 (1974-12-01), Johnson et al.
patent: 4151787 (1979-05-01), Rohr et al.
Coan James F.
Holler E. J.
Owens--Illinois, Inc.
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