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1. (WO1991006417) METHOD AND APPARATUS FOR MANUFACTURING RIBBED PIPE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/006417 International Application No.: PCT/FI1990/000249
Publication Date: 16.05.1991 International Filing Date: 23.10.1990
IPC:
B29C 47/00 (2006.01) ,B29C 47/12 (2006.01) ,B29C 47/88 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
47
Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
47
Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
08
Component parts, details or accessories; Auxiliary operations
12
Extrusion nozzles or dies
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
47
Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
08
Component parts, details or accessories; Auxiliary operations
78
Heating or cooling the material to be extruded or the stream of extruded material
88
Heating or cooling the stream of extruded material
Applicants:
UPONOR N.V. [NL/NL]; Emmaplein, Fouress Building P.O. Box 259 Philipsburg Sint Maarten, AN (AllExceptUS)
HÖLSÖ, Paul [SE/SE]; SE (UsOnly)
HÖLSÖ, Eino [SE/SE]; SE (UsOnly)
JÄRVENKYLÄ, Jyri [FI/FI]; FI (UsOnly)
SCHARWÄCHTER, Dieter [DE/FI]; FI (UsOnly)
ÅGREN, Lennart [SE/SE]; SE (UsOnly)
Inventors:
HÖLSÖ, Paul; SE
HÖLSÖ, Eino; SE
JÄRVENKYLÄ, Jyri; FI
SCHARWÄCHTER, Dieter; FI
ÅGREN, Lennart; SE
Agent:
OY KOLSTER AB; Stora Robertsgatan 23 P.O. Box 148 SF-00121 Helsinki, FI
Priority Data:
89510627.10.1989FI
Title (EN) METHOD AND APPARATUS FOR MANUFACTURING RIBBED PIPE
(FR) PROCEDE ET APPAREIL DE FABRICATION D'UN TUYAU A NERVURES
Abstract:
(EN) The invention relates to a method and apparatus for manufacturing ribbed pipes, wherein a formable mass in a plastic state is extruded into a substantially cylindrical forming space of a corrugator (12), said forming space being delimited by forming means, i.e. moulds (17), movable in the production direction of the apparatus and having grooves on the inner surface thereof for forming rib flanges (10), and a stationary kernel (16) forming the inner surface of the pipe, and wherein the mass formed as a pipe (18) in the forming space is cooled. In accordance with the invention, the ribbed pipe (18) is cooled from the inner surface of the pipe with the kernel (16) which extends an essential length externally of the forming space constituted by the forming means (17) of the corrugator (12).
(FR) On décrit un procédé et un appareil de fabrication de tuyaux à nervures. Une masse formable à l'état plastique est extrudée et introduite dans l'espace de formage sensiblement cylindrique d'une machine strieuse (12), ledit espace de formage étant défini par des moyens de formage, c'est-à-dire des moules (17), amovibles dans le sens de fabrication de l'appareil et possédant sur leur surface interne des rainures destinées à former des nervures (10). Un noyau immobile (16) forme la surface interne du tuyau et l'on refroidit la masse à laquelle l'on a donné la forme d'un tuyau (18) dans l'espace de formage. Selon le procédé, on refroidit le tuyau à nervures (18) à partir de sa surface interne au moyen du noyau (16) qui s'étend essentiellement jusqu'à l'extérieur de l'espace de formage constitué des moyens de formage (17) de la machine strieuse (12).
Designated States: AU, CA, JP, KR, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0451241US5139730JPH04505430CA2039736DE000069018964KR1019920700883
AU1990065341