B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 49/04 (2006.01) B29C 49/42 (2006.01)
Patent
CA 2517389
The invention relates to a method for the production of hollow bodies (B), especially plastic bottles, wherein a section of a plastic flexible hose (T) is placed in a cavity (7) of a blow mould (6) by an extruder head (4) according to a predefined clocked pulse. The plastic flexible hose (FT) is inflated inside the blow mould (6) by means of a blow mandrel (11) by overpressure according to the blow mould cavity. The manufactured inflated hollow body (B) is subsequently removed from the mould. According to the invention, the plastic hose (T) is continually held on opposite sides of the blow mould arrangement during the entire extrusion and blow cycle. The invention also relates to a device for carrying out the inventive method.
L'invention concerne un procédé pour fabriquer des corps creux (B), notamment des bouteilles en plastique, selon lequel un segment de tube de plastique (T) est amené par une tête d'extrudeuse (4) dans une cavité (7) d'outil de soufflage (6) à une cadence déterminée. Dans l'outil de soufflage (6), le tube de plastique (FT) est soufflé conformément à la cavité de soufflage (7), par surpression au moyen d'un mandrin de soufflage (11). Le corps creux (B) ainsi soufflé est alors démoulé. Selon l'invention, le tube de plastique (T) est maintenu en permanence sur les faces opposées de l'ensemble outil de soufflage pendant un cycle complet d'extrusion et de soufflage. La présente invention porte également sur un dispositif pour réaliser ledit procédé.
Dueringer Markus
Hammerle Martin
Moffat & Co.
Soplar Sa
LandOfFree
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