Mold for suction/blowing system
AssigneeSIG Blowtec GmbH & Co. KG
InventorsWilli Döhmen, Frank Schüller, Dirk Wehrens
Life of this patent
Estimating the term…
Abstract
A molding apparatus has a pair of mold halves having faces engageable together to form a nonstraight passage having an intake end and an output end, extruder means for forming a hollow plastic preform and feeding it to the intake end of the passage, pump means connected to the output end of the passage for drawing gas therefrom and thereby applying drawing the preform through the passage, and a seal carried on one of the faces, extending along the passage, and engaging the other of the faces for preventing gas flow between the faces into the passage when the mold halves are closed together.
Claims7
A molding apparatus comprising:
- a pair of mold halves having faces engageable together to form a nonstraight passage having an intake end and an output end;
- extruder means for forming a hollow plastic preform and feeding it to the intake end of the passage;
- pump means connected to the output end of the passage for drawing gas therefrom and thereby applying drawing the preform through the passage;
- and
- means including a seal carried on one of the faces, extending along the passage, and engaging the other of the faces for preventing gas flow between the faces into the passage when the mold halves are closed together.
Dependencies are inferred from the claim text.