B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 49/00 (2006.01) B29C 49/78 (2006.01)
Patent
CA 2524346
The invention relates to a device for manufacturing a double double-walled thermoplastic pipe with a connecting sleeve. When the pipe is manufactured by using this device, there forms an approximately annular space (A), which is defined by an extrusion head (1), a first flexible tube (2), which is extruded into a molding tunnel (4), and a second flexible tube (5), which is extruded into the first flexible tube (2). The invention envisages connecting the space (A) to a compressed-gas reservoir (24), so that pressure changes in the space (A) are attenuated by the compressed-gas vessel (Fig. 1).
L'invention concerne un dispositif de fabrication d'un tuyau thermoplastique à double paroi avec un manchon de raccord. Pendant la fabrication du tuyau au moyen de ce dispositif, il se forme un espace (A) à peu près annulaire défini par une tête d'injection (1), un premier tuyau (2) extrudé dans un tunnel de moulage (4) et un deuxième tuyau (5) extrudé dans le premier tuyau (2). L'invention prévoir de relier l'espace (A) à un réservoir (24) de gaz comprimé afin d'atténuer les fluctuations de la pression dans l'espace (A) au moyen du conteneur de gaz comprimé.
Lupke Manfred Arno Alfred
Lupke Stefan A.
Dennison Associates
Lupke Manfred Arno Alfred
LandOfFree
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