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FR2397933A1 Expired / Lapsed FR ⏱️ 0.0 years remaining

Die and mandrel for extruding corrugated tubing - with a smooth internal lining, by co:extrusion of the coaxial components

Assignee: USINAGE TUBES POUR ELECTR
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Filing: 1977-07-22
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Granted: —
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Expires: 1997-07-22
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Abstract

Abstract Translated from French L'invention concerne la fabrication continue des tubes en matière synthétique thermoplastique dits annelés présentant une gaine intérieure lisse. Selon l'invention, le dispositif comporte un système d'extrusion secondaire coaxial inférieur à la torpille de la tête d'extrusion et deux canaux indépendants pour l'acheminement de l'air, un premier canal pour la conformation du tube, et un deuxième canal pour le gainage du tube conformé. Application aux tubes annelés gainés lisses intérieurement, notamment pour câbles électriques. The invention relates to the continuous manufacture of so-called corrugated thermoplastic synthetic tubes having a smooth inner sheath. According to the invention, the device comprises a coaxial secondary extrusion system lower than the torpedo of the extrusion head and two independent channels for conveying air, a first channel for shaping the tube, and a second channel for the sheathing of the shaped tube. Application to corrugated tubes sheathed smooth internally, in particular for electric cables.

Inventors

  • 👤 Rene Aubert

Bibliographic Details

Application Number —
Jurisdiction FR
Data Source google_patents
Last Synchronized 2026-10-24 20:31
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/0015; B29C49/0021; B29C48/00; B29C48/001; B29C48/0013; B29C48/0015; B29C48/03; B29C48/09; B29C48/16; B29C48/18; B29C48/21; B29C48/25; B29C48/30; B29C48/32; B29C48/06; B29C48/13; B29L; B29L2024/00; B29L2024/003; B29L2031/00; B29L2031/60; B29L2031/601

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