Helically wound tubular wall material and method of production

Details Helically wound tubular wall material and method of production Helically wound tubular wall material and method of production

B - Operations, Transporting

65

D

190/43, 154/53.1

B65D 25/14 (2006.01) B65D 3/22 (2006.01) B65D 65/40 (2006.01)

Patent

CA 1072896

ABSTRACT OF THE DISCLOSURE This application describes a liner destined to form part of a tubular container useful in the packaging of dry and liquid products such as hydroscopic oil, food products, and liquid foods. The liner of the tubular container may be 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. The composite structure 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 appropri- ate lengths and attaching end closure means thereto.

252160

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