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1. WO2007144070 - MANUFACTURING PROCEDURE FOR TUBULAR PRODUCTS OBTAINED BY CONTINUOUS ASSEMBLY OF EXTRUDED PROFILES OF PLASTIC MATERIAL WITH EXPANDING POLYMERS

Publication Number WO/2007/144070
Publication Date 21.12.2007
International Application No. PCT/EP2007/004786
International Filing Date 30.05.2007
IPC
B29C 44/32 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
44Shaping by internal pressure generated in the material, e.g. swelling or foaming
20for articles of indefinite length
32Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
CPC
B29C 44/324
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
44Shaping by internal pressure generated in the material, e.g. swelling or foaming ; ; Producing porous or cellular expanded plastics articles
20for articles of indefinite length
32Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
322the preformed parts being elongated inserts, e.g. cables
324the preformed parts being tubular or folded to a tubular shape
Applicants
  • CAVEDAGNA, Nicolo [IT]/[IT]
  • CAVEDAGNA, Francesca [IT]/[IT]
Inventors
  • CAVEDAGNA, Nicolo
  • CAVEDAGNA, Francesca
Agents
  • PETRUZZIELLO, Aldo
Priority Data
RA2006A00003313.06.2006IT
RA2006A00007621.12.2006IT
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MANUFACTURING PROCEDURE FOR TUBULAR PRODUCTS OBTAINED BY CONTINUOUS ASSEMBLY OF EXTRUDED PROFILES OF PLASTIC MATERIAL WITH EXPANDING POLYMERS
(FR) PROCÉDURE DE FABRICATION POUR DES PRODUITS TUBULAIRES OBTENUS PAR UN ASSEMBLAGE CONTINU DE PROFILS EXTRUDÉS DE MATIÈRE PLASTIQUE AVEC DES POLYMÈRES EXPANSÉS
Abstract
(EN)
A manufacturing procedure for tubular products obtained by continuous assembly of tubular profiles of plastic material with expanding polymers placed on their inside, comprising the following steps: - extruding an open tubular profile (20) provided with a side opening (21) on at least one side of the profile; - introducing an expanding polymer (23) inside the open tubular profile (20), through said side opening (21), and - closing the tubular profile filled with the expanding polymer and containing said closed tubular profile (22) for the time necessary for the chemical expansion of the polymer.
(FR)
L'invention concerne une procédure de fabrication pour des produits tubulaires obtenus par un assemblage continu de profils tubulaires de matière plastique avec des polymères expansés placés à l'intérieur de ceux-ci, comprenant les étapes consistant à : - extruder un profil tubulaire ouvert (20) muni d'une ouverture latérale (21) sur au moins un côté du profil ; - introduire un polymère expansé (23) à l'intérieur du profil tubulaire ouvert (20), à travers ladite ouverture latérale (21), et – fermer le profil tubulaire rempli de polymère expansé et contenant ledit profil tubulaire fermé (22) pendant le temps nécessaire à l'expansion chimique du polymère.
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