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1. (WO1994027806) A METHOD OF PRODUCING BOTTLE OR TUBE-LIKE, CAPPED PACKAGING CONTAINERS FROM A POLYMER MATERIAL

Pub. No.:    WO/1994/027806    International Application No.:    PCT/EP1994/001668
Publication Date: Dec 8, 1994 International Filing Date: May 24, 1994
IPC: B29C 49/20
B29C 51/08
B29C 51/10
B29C 51/12
Applicants: TETRA LAVAL HOLDINGS & FINANCE S.A.
BRUHN, Krister
Inventors: BRUHN, Krister
Title: A METHOD OF PRODUCING BOTTLE OR TUBE-LIKE, CAPPED PACKAGING CONTAINERS FROM A POLYMER MATERIAL
Abstract:
The disclosure relates to a method of producing bottle or tube-like, capped packages from a polymer material which is plastically formable in the heated state. In the forming operation, a sheet (7) of polymer material heated to plasticity is fixedly clamped over the aperture (2) of a conically shaped cavity (1) corresponding to the form and size of the produced packaging container. The plastic sheet (7) is pressed into the cavity (1) by means of a mandrel (9) at the same time as blades or vanes (10) supported by the mandrel (9) are folded out in the radial direction from the mandrel (9) and urge the plastic polymer material against the walls (3) of the cavity (1), the walls being provided with channels or slots which may be placed in communication with a vacuum source. The forward portion (11) of the mandrel (9) forces parts of the polymer material into a cap (5) disposed in the innermost region of the cavity (1), with which cap the polymer material can be united. Finally, the hollow body (4) formed from the polymer material is removed from the cavity (1), filled with its intended contents and sealed by means of a preformed bottom portion (12).