MOULD FOR FORMING THE HEADPIECE OF DEFORMABLE TUBULAR PLASTIC CONTAINERS

WIPO Patent Application WO2003053649

B1

The mould comprises a punch (10) having an outer surface (11') arranged to engage the container tubular body (51) as an exact fit, and an end portion (13) projecting axially from the lower end of the cylindrical outer surface (11'), and a die (30) arranged to form, in combination with the lower surface (13') of the punch, a cavity (F) for forming the headpiece (52) of the container; the die (30) has a concave surface 832') arranged to receive as an exact fit, by axial penetration, the lower end of the cylindrical outer surface (11') of the punch together with the lower end of the tubular body (51) of the container. The headpiece 852) is formed within the forming cavity (F). According to the invention, the punch (10) comprises a radial deformation means (22, 25, 62, 65), positioned on its outer surface (11') and extending annularly along the entire circumference of this surface to act on the tubular body (51) of the container, and is arranged to assume a normal position in which its outer surface does not project radially from the cylindrical outer surface (11') of the punch, and an active position in which it is urged in a centrifugal direction in such a manner as to press the tubular body (51) against the opposing surface of teh die, means being provided to urge the radial deformation means (22, 25, 62, 65) in the centrigal direction during the forming of the container headpiece (52).

JPH061381

A fusion liquid feeder

BERGAMI STEFANO (IT)
ZUFFA ZENO (IT)

PCT/EP2002/013877

September 04, 2003

December 05, 2002

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SACMI (IT)
BERGAMI STEFANO (IT)
ZUFFA ZENO (IT)

B29C31/00; B29C43/18; B29C43/36; B29C43/42; B29C45/14; B29L23/20; (IPC1-7): B29C33/00; B29C43/36; B29C43/42

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