Lining intended to be part of a container packing; wall tube wrapped in helical direction adapted to form a cylindrical packaging containers; process for the production of wall t.Ubular wrapped in helical direction adapted to form cylindrical containers, packaging and packing cylindrical container;

摘要

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.