WO1990002644A1 - Procede de fabrication de tuyaux - Google Patents

Procede de fabrication de tuyaux Download PDF

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Publication number
WO1990002644A1
WO1990002644A1 PCT/AU1989/000398 AU8900398W WO9002644A1 WO 1990002644 A1 WO1990002644 A1 WO 1990002644A1 AU 8900398 W AU8900398 W AU 8900398W WO 9002644 A1 WO9002644 A1 WO 9002644A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
temperature
wall
pipe
desired orientation
Prior art date
Application number
PCT/AU1989/000398
Other languages
English (en)
Inventor
George Macovaz
Peter Glanville Chapman
James Dunstone Townsend
Original Assignee
Vinidex Tubemakers Pty. Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vinidex Tubemakers Pty. Limited filed Critical Vinidex Tubemakers Pty. Limited
Publication of WO1990002644A1 publication Critical patent/WO1990002644A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/22—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of tubes
    • B29C55/24—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of tubes radial
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/908—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article characterised by calibrator surface, e.g. structure or holes for lubrication, cooling or venting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/91—Heating, e.g. for cross linking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9115—Cooling of hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/905—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article using wet calibration, i.e. in a quenching tank
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/06—PVC, i.e. polyvinylchloride

Definitions

  • This invention relates to a process and apparatus which can be used to produce thermo-plastic pipes of enhanced characteristics, and to pipes made by that process.
  • the process has particular application to the enhancement of burst pressure and tensile strength of uPVC pipes.
  • thermoplastic materials can be enhanced by molecular orientation induced by stretching or drawing the material, usually at an elevated temperature, followed by cooling to lock in the orientation.
  • the basic principles of orientation of pipes and tubes are described in the literature. Diedrich et al (US Patent No. 2961711) descibes the processing conditions appropriate generally to polyolefin materials and the general method for drawing or stretching as a continuous (on-line) or discontinuous (off-line) process.
  • Yazawa et al (US Patent No. 3313870) also teaches a method primarily applicable to thin film tubes.
  • a further major problem not addressed by these authors relates to attainment of the appropriate thermal conditions for the orientation of thick-walled tubes.
  • a high degree of temperature uniformity is required to achieve dimensional stability of wall thickness when expanding tubes, since variations in temperature of the material result in variations in the rheological properties, with varying visco-elastic response to stress around, along and/or through the wall of the tube.
  • This is particularly critical for materials such as polyvinyl chloride (PVC) for which properties change markedly in the vicinity of the optimum temperature for orientation, that is, where the greatest capacity for material strain can be achieved.
  • PVC polyvinyl chloride
  • thermoplastics material pipe having a wall which is drawn or stretched to achieve material orientation, including the steps of continuously:
  • the term "tube” is used to denote the extruded material prior to and during the expansion and the term “pipe” is used to denote the tube after expansion.
  • the method is particularly advantageous when the tube produced by the initial extrusion step is a medium- or thick-walled tube.
  • the expanded pipe is passed through a sizing device such as a sizing sleeve or convex sizing rollers to limit expansion and control the external diameter of the pipe.
  • a sizing device such as a sizing sleeve or convex sizing rollers to limit expansion and control the external diameter of the pipe.
  • the sizing device may also cool the pipe.
  • the expandable plug is preferably expanded by hydraulic or pneumatic pressure, which may be due to hydraulic or pneumatic fluid introduced to a cavity within the plug.
  • the fluid may then be allowed to enter the internal pressure region through one or more orifices in the plug and may further be allowed to enter temperature conditioning zone within the tube through one or more orifices in an upstream plug which limits the upstream end of the internal pressure region.
  • the expansion of the tube is effected by a pressure differential between the internal pressure zone and an external pressure region in which the pressure is adjustable, thereby allowing better control over the rate of expansion.
  • thermoplastics material pipe having a wall which is drawn or stretched to achieve material orientation, including the steps of continuously:
  • the cooling step results in a temperature profile across the tube wall such that the temperature of the outer surface of the wall is below the desired orientation temperature and the temperature of the inner surface of the wall is above the desired orientation temperature.
  • the temperature profile may be such that the temperatures across the tube wall after the cooling step would tend to equalise below the desired orientation temperature under adiabatic conditions.
  • the heating step preferably results in a temperature profile across the tube wall such that both the inner and outer surfaces of the wall are above the desired orientation temperature and at least one point within the tube wall is below the desired orientation temperature.
  • the temperature profile may be such that the temperatures across the tube wall after the heating step tend to equalise at approximately the desired orientation temperature.
  • FIG 1 is in the most schematic way an illustration of an apparatus shown in elevation, to effect manufacture in accordance with the invention, but is not intended to disclose in great detail the technical workings of the invention except in general principle;
  • FIG 2 shows detail A of FIG 1
  • FIG 3 shows detail B of FIG 1
  • FIG 4 shows detail C of FIG 1
  • FIGS 5(a), 5(b) and 5(c) illustrate the temperature profiles across the tube wall
  • FIG 6 illustrates an alternative means for controlling the external diameter of the pipe.
  • An extruder of standard commercially available type preferably fitted with an offset or cross head 1, extrudes a thick-walled "feedstock" tube 3 via a standand circular pipe die with a hollow center pin.
  • the tube 3 passes into a cooling bath 2, containing circulating fluid which is held at a temperature well below the desired orientation temperature.
  • a standard sizing sleeve 4 to which the feedstock tube 3 is held by maintaining vacuum in the cooling bath 2, or by applying air pressure internally via the hollow extruder head and die pin.
  • the tube 3 then passes from the cooling bath through a tractor 17, which pulls it from the bath 2 and the extrusion die, moving at regulated speed to control the wall thickness of the tube.
  • the tube 3 then passes into a heating bath 5, in which the circulating fluid temperature is maintained above the orientation temperature, then enters the finishing bath 6 , in which the circulating fluid temperature is maintained substantially at the desired orientation temperature. It continues to move through the finishing bath 6 until the temperature profile across the wall of the tube has evened out to within the desired tolerances of the orientation temperature.
  • the tube may be passed through additional baths at temperatures below and above the orientation temperature.
  • Internal plug 7 has a fixed external diameter substantially equal to the internal diameter of the feedstock tube.
  • a second plug 8 is fitted at an appropriate point further downstream, to provide a pressurised expansion chamber 18 in conjunction with plug 7. Plugs 7 and 8 are shown in more detail in Figs . 3 and 4 respectively.
  • Plug 8 effectively enables the process to be started.
  • Plug 8 is capable of diametral expansion, being constructed, in this example, partly or wholly of elastomeric material, and is expanded under applied internal pressure to contact and seal against the internal surface of the wall of the pipe. It has an initial and minimum diameter approximately equal to the internal diameter of the feedstock, and a maximum expanded diameter equal to the internal diameter of the expanded pipe.
  • One form of construction is of low friction elastomeric material, supported by end plates.
  • Plugs 7 and 8 are affixed to and restrained in position by metal conduit 9, which passes along the full length of the feedstock tube and through and beyond the extruder head, and through which pressurised fluid at a temperature substantially equal to orientation temperature is introduced to the interior of plug 8.
  • the fluid flows back through control orifices 10 into the expansion chamber 18 to provide internal pressure required to expand the feedstock tube, and thence through control orifices 11 into internal temperature conditioning zone 12.
  • conduit 14 concentric with conduit 9 allows removal of backflow fluid without backpressure, or with slight backpressure if required to maintain shape support of the feedstock tube.
  • Scavenge seals 13 affixed to conduit 14 seal against the internal surface of the feedstock tube 3 to contain the backflow fluid within conditioning zone 12.
  • Flow of fluid through the orifices 10 causes a drop in pressure in the backflow fluid, such that the pressure in the expansion chamber 18 is maintained at a level somewhat below that in plug 8, the differential being just sufficient to ensure effective sealing action of plug 8.
  • Flow through orifices 11 again causes a pressure drop, and the differential is sufficient to maintain the pressure in the expansion chamber 18 at the level required to bring about expansion of the tube at the desired rate.
  • the expandable plug may be independently pressurised by a hydraulic tube introduced within the delivery pipe 9.
  • fluid for expansion and temperature control is delivered directly to the expansion chamber 18 via conduit 9.
  • the tube is immersed in the expansion bath 19, in which fluid is circulated also at orientation temperature.
  • Bath 19 may be a continuation of conditioning bath ⁇ , or separated as shown in the schematic. The latter arrangement enables the expansion bath 19 to be pressurised at some lower pressure than that within the expansion chamber 18, or subjected to vacuum, which pressure or vacuum may be independantly adjusted to improve control over the rate of expansion.
  • Sizing sleeve 15 contains and limits the expansion of the tube and extends from the expansion bath 19 into the cooling bath 16, in which coolant at ambient temperature is circulated.
  • sleeve 15 is a vacuum sizing sleeve, of the standard design and operation used in general extrusion practice, whereby cooling water is drawn in over the surface of the pipe to better cool and lubricate its passage through the sleeve.
  • the plug 8 is positioned downstream of the start of the cooling bath a distance sufficient to maintain internal pressure within the pipe until the outer surface of the pipe has cooled and hardenned enough for the pipe to be self supporting.
  • the finished pipe is supported and drawn forward by a tractor (not shown), the speed of which is adjusted to provide tension to the pipe and feedstock tube, and to control the degree of draw or stretch in the axial direction induced during the forming process.
  • the temperature and flow rate of the incoming fluid via conduit 9 are adjusted to maintain the temperature in the expansion zone, monitored by remote sensors (not shown), sensibly at the desired orientation temperature. Orifices 10 and 11 are set to a size required to produced the required pressure drops at this flow rate.
  • Such temperature, flow rate, pressures and dimensions may readily be predicted using known mathematical modelling techniques, given the thermal and rheological characteristics over the relevant temperature range of the thermoplastic material as established for example from laboratory measurement.
  • Scavenge seals 13 may be positioned anywhere along the feedstock tube, but preferably at the start of conditioning bath 5.
  • the temperatures, conditioning fluids, and conditions of operation can vary considerably depending on the material subject to orientation. Where the desired temperatures are outside of the range obtainable by using water as the heat transfer medium, other liquids or solutions such as ethylene glycol in water may be appropriate.
  • the cooling bath 2 can be refrigerated, and in one embodiment may use liquid nitrogen as a heat sink.
  • the heating bath 5 can be sealed to allow high pressures (necessarily compensated by higher backpressure in the internal conditioning zone 12) and thus elevated temperatures.
  • Figs 5(a), 5(b) and 5(c) Temperature profiles across the wall of the tube are illustrated in Figs 5(a), 5(b) and 5(c).
  • the desired orientation temperature is denoted by reference numeral 20 and the upper and lower tolerances are denoted by numerals 21 and 22 respectively.
  • Fig 5(a) show the profile at the end of bath 2, with heat extracted vigorously from the outer surface of the tube. The high rate of heat transfer causes a substantial temperature gradient across the wall.
  • Fig 5(b) shows the profile at the end of bath 5, following external heating by bath 5 and internal cooling by zone 12.
  • Fig 5(c) shows the profile at the end of finishing bath 6, with the temperature profile being within the required tolerances.
  • the total heat extracted via bath 2 and zone 12 is in excess of that required to bring the temperature of the tube to the target temperature, and this excess is balanced by the surplus heat supplied via bath 5.
  • the lengths of baths and temperatures required to achieve the desired balance can readily be estimated, given the thermal characteristics of the material, heat transfer fluids, and line speeds.
  • the sizing sleeve 15 is replaced by a set of sizing rollers 23.
  • the rollers are concave in shape to match the required pipe external diameter, and overlapping in position to provide adequate and uniform support to the pipe- Advantages of this system are the reduction of friction, which is desirable where it is preferred to minimise the degree of axial draw, and also more rapid cooling of the finished pipe is possible.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

Le procédé décrit sert à produire un tuyau en matériau thermoplastique comportant une paroi qui est soumise à une traction ou à un étirage destiné à assurer l'orientation du matériau. Ledit procédé consiste à effectuer en continu l'extrusion initiale d'un tube (3), à le soumettre à un traitement thermique jusqu'à obtenir une température d'orientation désirée, à effectuer l'expansion du tube par pression à l'intérieur d'une région de pression interne (18) et à le refroidir. Dans un premier mode de réalisation de la présente invention, la région de pression interne est limitée à son extrémité avale par un bouchon obturateur expansible (8). Dans un autre mode de réalisation de la présente invention, le tube extrudé est amené à la température d'orientation désirée par refroidissement de la surface externe de la paroi jusqu'à un niveau inférieur à la température désirée, par chauffage ultérieur de la surface externe de la paroi du tube, puis par traitement thermique de la paroi du tube.
PCT/AU1989/000398 1988-09-15 1989-09-15 Procede de fabrication de tuyaux WO1990002644A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPJ042788 1988-09-15
AUPJ0427 1988-09-15

Publications (1)

Publication Number Publication Date
WO1990002644A1 true WO1990002644A1 (fr) 1990-03-22

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PCT/AU1989/000398 WO1990002644A1 (fr) 1988-09-15 1989-09-15 Procede de fabrication de tuyaux

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997006940A1 (fr) * 1995-08-18 1997-02-27 Vinidex Tubemakers Pty. Limited Procede de regulation de la fabrication de tubes plastiques orientes
WO1997010096A1 (fr) * 1995-09-15 1997-03-20 Vinidex Tubemakers Pty. Limited Etirement biaxial de tubes en plastique
WO1997010941A1 (fr) * 1995-09-20 1997-03-27 Uponor B.V. Produits polymeres orientes
US5629493A (en) * 1992-11-17 1997-05-13 Nitro Nobel Ab Low energy fuse having improved properties in both axial and radial directions
US5817270A (en) * 1994-03-22 1998-10-06 Wavin B.V. Method and device for manufacturing biaxially oriented tubing from thermoplastic material
US5942171A (en) * 1994-05-04 1999-08-24 Wavin B.V. Method for manufacturing biaxially oriented tubing from thermoplastic material
US6050800A (en) * 1995-09-15 2000-04-18 Vindex Tubemakers Pty. Limited Sizing apparatus
US6203651B1 (en) 1995-09-20 2001-03-20 Uponor Innovation Ab Method and apparatus for making an extrusion product, and an extrusion product
US6416211B1 (en) 1996-02-20 2002-07-09 Conenor Oy Method and apparatus for molding plastic
US6726863B2 (en) 1999-03-05 2004-04-27 Wavin B.V. Thermoplastic tube
US6905642B2 (en) 2000-03-29 2005-06-14 Alphacan Method and continuous production line of plastic tubes with bi-axial drawing, and resulting plastic tube
EP1615761A1 (fr) * 2003-04-08 2006-01-18 Vinidex Pty Limited Procede et appareil de commande de processus d'orientation de tubes en plastique
ES2317747A1 (es) * 2006-10-10 2009-04-16 Jose Fernando Lopez Diaz Dispositivo conformador para la orientacion radial biaxial de tuberias termoplasticas.
EP2130662A1 (fr) 2008-06-04 2009-12-09 Battenfeld Extrusionstechnik GmbH Procédé et dispositif destinés à la fabrication de profils en plastique
WO2011049436A2 (fr) 2009-10-19 2011-04-28 Rollepaal Holding B.V. Procédés et dispositifs pour la fabrication de tubes à orientation biaxiale
WO2013151420A1 (fr) 2012-04-06 2013-10-10 Hoppmann International B.V. Procédé et installation pour la fabrication de tubes à orientation biaxiale
AU2015203536B2 (en) * 2009-10-19 2016-07-28 Hoppmann International B.V. Methods and devices for manufacturing biaxially oriented tubing
CN110815802A (zh) * 2019-09-26 2020-02-21 宜宾天亿新材料科技有限公司 制造pvc-o管材的方法及其扩张装置
WO2020130835A3 (fr) * 2018-12-21 2020-09-03 RPFlow R&D B.V. Procédés et installations de production d'un tube orienté biaxialement à partir d'un matériau thermoplastique

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2961711A (en) * 1956-09-06 1960-11-29 Hoechst Ag Process for strengthening hollow bodies of plastic material
DE1166458B (de) * 1959-09-18 1964-03-26 Krauss Maffei Ag Schneckenpresse mit einer Ringduese

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2961711A (en) * 1956-09-06 1960-11-29 Hoechst Ag Process for strengthening hollow bodies of plastic material
DE1166458B (de) * 1959-09-18 1964-03-26 Krauss Maffei Ag Schneckenpresse mit einer Ringduese

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5629493A (en) * 1992-11-17 1997-05-13 Nitro Nobel Ab Low energy fuse having improved properties in both axial and radial directions
US5817270A (en) * 1994-03-22 1998-10-06 Wavin B.V. Method and device for manufacturing biaxially oriented tubing from thermoplastic material
US5942171A (en) * 1994-05-04 1999-08-24 Wavin B.V. Method for manufacturing biaxially oriented tubing from thermoplastic material
EP0844927A1 (fr) * 1995-08-18 1998-06-03 Vinidex Tubemakers Pty. Ltd. Procede de regulation de la fabrication de tubes plastiques orientes
EP0844927A4 (fr) * 1995-08-18 2001-04-04 Vinidex Tubemakers Pty Ltd Procede de regulation de la fabrication de tubes plastiques orientes
WO1997006940A1 (fr) * 1995-08-18 1997-02-27 Vinidex Tubemakers Pty. Limited Procede de regulation de la fabrication de tubes plastiques orientes
CN1064587C (zh) * 1995-08-18 2001-04-18 温尼德斯制管商有限公司 制造定向塑料管用的控制方法
CN1064588C (zh) * 1995-09-15 2001-04-18 温尼德斯制管商有限公司 塑料管的双轴向拉伸
WO1997010096A1 (fr) * 1995-09-15 1997-03-20 Vinidex Tubemakers Pty. Limited Etirement biaxial de tubes en plastique
US6050800A (en) * 1995-09-15 2000-04-18 Vindex Tubemakers Pty. Limited Sizing apparatus
AU701249B2 (en) * 1995-09-15 1999-01-21 Vinidex Pty Limited Biaxial stretching of plastic tubes
EP0850136A4 (fr) * 1995-09-15 2001-10-04 Vinidex Pty Ltd Etirement biaxial de tubes en plastique
EP0850136A1 (fr) * 1995-09-15 1998-07-01 Vinidex Tubemakers Pty. Ltd. Etirement biaxial de tubes en plastique
US6053214A (en) * 1995-09-20 2000-04-25 Uponor Bv Oriented polymeric products
US6203651B1 (en) 1995-09-20 2001-03-20 Uponor Innovation Ab Method and apparatus for making an extrusion product, and an extrusion product
WO1997010941A1 (fr) * 1995-09-20 1997-03-27 Uponor B.V. Produits polymeres orientes
US6416211B1 (en) 1996-02-20 2002-07-09 Conenor Oy Method and apparatus for molding plastic
US7217379B2 (en) 1999-03-05 2007-05-15 Wavin B.V. Thermoplastic tube
US6726863B2 (en) 1999-03-05 2004-04-27 Wavin B.V. Thermoplastic tube
US6905642B2 (en) 2000-03-29 2005-06-14 Alphacan Method and continuous production line of plastic tubes with bi-axial drawing, and resulting plastic tube
EP1615761A1 (fr) * 2003-04-08 2006-01-18 Vinidex Pty Limited Procede et appareil de commande de processus d'orientation de tubes en plastique
EP1615761A4 (fr) * 2003-04-08 2011-04-20 Vinidex Pty Ltd Procede et appareil de commande de processus d'orientation de tubes en plastique
ES2317747A1 (es) * 2006-10-10 2009-04-16 Jose Fernando Lopez Diaz Dispositivo conformador para la orientacion radial biaxial de tuberias termoplasticas.
EP2130662A1 (fr) 2008-06-04 2009-12-09 Battenfeld Extrusionstechnik GmbH Procédé et dispositif destinés à la fabrication de profils en plastique
EP2679379A2 (fr) 2009-10-19 2014-01-01 Hoppmann International B.V. Procédés etdispositifs pour la fabrication de tubes à orientation biaxiale
WO2011049436A3 (fr) * 2009-10-19 2011-09-09 Rollepaal Holding B.V. Procédés et dispositifs pour la fabrication de tubes à orientation biaxiale
NL2007592A (en) * 2009-10-19 2012-04-19 Rollepaal Holding B V Methods and devices for manufacturing biaxially oriented tubing.
WO2011049436A2 (fr) 2009-10-19 2011-04-28 Rollepaal Holding B.V. Procédés et dispositifs pour la fabrication de tubes à orientation biaxiale
US8911660B2 (en) 2009-10-19 2014-12-16 Hoppmann International B.V. Methods and devices for manufacturing biaxially oriented tubing
AU2015203536B2 (en) * 2009-10-19 2016-07-28 Hoppmann International B.V. Methods and devices for manufacturing biaxially oriented tubing
EA026645B1 (ru) * 2009-10-19 2017-04-28 Хоппманн Интернешнел Б.В. Способ и установка для изготовления трубы из биаксиально-ориентированного термопластического материала
EP3173210A1 (fr) 2009-10-19 2017-05-31 Hoppmann International B.V. Procédé et dispositif de fabrication de tube à orientation biaxiale
US9744731B2 (en) 2009-10-19 2017-08-29 Hoppmann International B.V. Installations for manufacturing biaxially oriented tubing and the tubing itself
WO2013151420A1 (fr) 2012-04-06 2013-10-10 Hoppmann International B.V. Procédé et installation pour la fabrication de tubes à orientation biaxiale
WO2020130835A3 (fr) * 2018-12-21 2020-09-03 RPFlow R&D B.V. Procédés et installations de production d'un tube orienté biaxialement à partir d'un matériau thermoplastique
CN110815802A (zh) * 2019-09-26 2020-02-21 宜宾天亿新材料科技有限公司 制造pvc-o管材的方法及其扩张装置
CN110815802B (zh) * 2019-09-26 2024-05-24 宜宾天亿新材料科技有限公司 制造pvc-o管材的方法及其扩张装置

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