Device for producing plastic containers by stretch blow forming

Details Device for producing plastic containers by stretch blow forming Device for producing plastic containers by stretch blow forming

2005-08-09

2005-08-09

Davis, Robert B. (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

Means utilizing force from explosive or thermic composition

C264S084000, C425S529000, C425S535000

Reexamination Certificate

active

06926506

ABSTRACT:
The invention relates to a device for producing containers from a plastic material that can be shaped by means of stretch blow forming and whose inner space corresponds to the finished container, said container being retained on its open end by a receiving element with gas flow pipes. A moveable stretch die (1) is axially guided through the receiving element and an ignition device is mounted in order to ignite an explosive gas mixture inside the container. In order to produce plastic containers having a better outer appearance, such as a substantially clear, transparent wall, and improve reliability of production, the receiving element can be engaged in a fluidically tight manner with the main distribution block (2) by the end thereof that faces the container, the stretching die (1) being movably guided through said distribution block in the axial extension of the receiving element. At least one first fluidic connection (13) is provided in a first area of the main distribution block (2) facing away from the container, and an additional fluidic connection (14) is provided in an opposite second area of the main distribution block (2) facing the container. The pipes (26, 14, 15) from the two fluidic connections (13, 14) in the second area in the main distribution block (2) are connected together. A single common flow channel (15) is formed between the connecting point (16) and the receiving element.

REFERENCES:
patent: 6796780 (2004-09-01), Chatard et al.
patent: 696 07 636 (2000-11-01), None
patent: 1026056 (1966-04-01), None
patent: WO 97/13632 (1997-04-01), None
patent: WO 9806559 (1998-02-01), None
patent: WO 0112416 (2001-02-01), None

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