COLLAPSIBLE PACKAGE

摘要

Apparatus and method of forming a container. The method includes heat softening a sheet of thermoplastic material, holding the sheet, moving a stretching tool relative to the sheet so as to cause the tool to press against the sheet and to stretch the sheet and moving a plurality of fingers provided on the stretching tool. The fingers moving outwardly from the axis of the tool to dilate the sheet as the tool moves relative to the sheet to form a hollow container with a base. Providing a cavity of smaller cross section than the container and causing a portion of the base of the container to conform to the surface profile of the cavity whereby an integral neck is formed on the hollow container. Apparatus is also provided to carry out the method according to the invention.