Helically wound tubular wall material

Details Helically wound tubular wall material Helically wound tubular wall material

1975-05-08

1976-09-14

Aegerter, Richard E.

Pipes and tubular conduits

Distinct layers

Bonded to each other

138144, 138150, F16L 916

Patent

active

039801071

ABSTRACT:
This application describes a tubular container wall material of particular use in the packaging of dry and liquid products such as hydroscopic food products, and liquid foods. This wall material comprises an inner portion of liner ordinarily composed of four adherent plies of polyester-polyolefin-metal foil-heat seal coating-which liner bonds through the heat seal coating to an outer portion of rigidity-imparting material. This composite wall material constitutes the tubular wall for a container and is formed by winding elongate strips of its constituent plies onto a mandrel where they are bonded into an integral structure, for example, by heating. The can or container itself may then be formed by cutting the resultant tubular structure into appropriate lengths and attaching end closure means thereto.

REFERENCES:
patent: 2355584 (1944-08-01), Douglas
patent: 3037529 (1962-06-01), Hancik
patent: 3390704 (1968-07-01), Woodell

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