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1. (WO1991008101) PLASTIC PIPE WITH A WALL MADE UP OF A PLASTIC-FILLER LAYER
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/008101 International Application No.: PCT/NL1990/000176
Publication Date: 13.06.1991 International Filing Date: 27.11.1990
Chapter 2 Demand Filed: 14.12.1990
IPC:
B29C 67/24 (2006.01) ,B29C 70/02 (2006.01) ,F16L 9/133 (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
67
Shaping techniques not covered by groups B29C39/-B29C65/93
24
characterised by the choice of material
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
70
Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
02
comprising combinations of reinforcements and fillers incorporated in matrix material, forming one or more layers, with or without non-reinforced or non-filled layers
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
L
PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
9
Rigid pipes
12
of plastics with or without reinforcement
133
the walls consisting of two layers
Applicants:
WAVIN B.V. [NL/NL]; Händellaan 251 NL-8031 EM Zwolle, NL (AllExceptUS)
VAN DER PLOEG, Frederik [NL/NL]; NL (UsOnly)
Inventors:
VAN DER PLOEG, Frederik; NL
Agent:
VAN DER VEKEN, J., A.; Exterpatent B.V. P.O. Box 3241 NL-2280 GE Rijswik, NL
Priority Data:
890295029.11.1989NL
Title (EN) PLASTIC PIPE WITH A WALL MADE UP OF A PLASTIC-FILLER LAYER
(FR) TUYAU EN PLASTIQUE POSSEDANT UNE PAROI CONSTITUEE D'UNE COUCHE DE CHARGE PLASTIQUE
Abstract:
(EN) A plastic pipe (1) having a wall consisting of a thermoplastic-filler layer (2) covered at one or both sides with a fibre reinforced thermoplastic layer (10). The thermoplastic is polypropylene, preferably a polypropylene copolymer. The filler is a particulate inorganic filler material such as sand and the thermoplastic-filler layer contains at least 60-95 % b.w. of filler. The fibre reinforced layer (10) is formed by tangentially winding a plastic tape of polypropylene or polypropylene copolymer comprising a longitudinally extending reinforcement preferably in the form of a continuous glass fibre. The pipe of thermoplastic-filler layer (2) may advantageously be formed by shaping an extruded or cast sheet of thin web (11) of thermoplastic-filler material and subsequently welding the edge sections of such a sheet or web together by means of weld joint (9). The shaping of the sheet or web is executed at a temperature within the softening range of the thermoplastic. The pipe may also be formed by winding a sheet or web (11) the subsequent layers of sheet or web (11) being preferably joined to each other by melting the thermoplastic. At last the pipe (1) may contain a reinforcing tape (5') comprising a reinforcement extending in the axial direction of the pipe (1).
(FR) Tuyau en plastique (1) possédant une paroi constituée d'une couche de charge thermoplastique (2) recouverte d'un côté ou des deux côtés par une couche thermoplastique (10) renforcée par fibres. Le thermoplastique est le polypropylène, de préférence un copolymère de polypropylène. La charge, telle que du sable, est inorganique et particulaire, et la couche de charge thermoplastique contient entre 60 et 95 % en poids de charge. On forme la couche (10) renforcée par fibres en enroulant de manière tangentielle une bande plastique de polypropylène ou de copolymère de polypropylène comprenant un renforcement longitudinal de préférence sous forme de fibre de verre continue. Le tuyau à couche de charge thermoplastique (2) peut être formé par formage d'une feuille ou d'une bande mince (11) extrudée ou coulée en matériau thermoplastique puis par soudage des parties périphériques d'une telle feuille ou bande au moyen d'un joint soudé (9). Le formage de la feuille ou de la bande s'effectue à une température comprise dans l'intervalle de ramollissement du thermoplastique. On peut également former le tuyau en enroulant une feuille ou une bande (11) dont les couches ultérieures sont liées de préférence par la fusion du thermoplastique. Enfin, le tuyau peut contenir un profil de renforcement (5') comportant un renforcement qui s'étend dans le sens axial du tuyau.
Designated States: AU, BB, BG, BR, CA, FI, HU, JP, KP, KR, LK, MC, MG, MW, NO, RO, SD, SU, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CM, GA, ML, MR, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
ES2092558EP0593449DE000069028220AU1991069550DK0593449