• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    This invention relates to a method of making a tube of thermoplastic material, comprising longitudinal channels of circular cross-section and having such wall stresses that, after axially cutting the tube, the edge parts along the cut edge overlap each other for less than 8% of the outer circumference of the tube.
    公开号:SU1052171A3
    申请号:SU782602654
    申请日:1978-04-06
    公开日:1983-10-30
    发明作者:Петер Ван Донгерен Ян
    申请人:Вавин Б.В. (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to the production of pipes made of plastic grated material and can be used in almost all the branches of the national economy. There are known methods for producing a pipe from a thermoplastic material, which involves extruding a thermoplastic material through a caliber followed by cooling the pipe to a final temperature flj. The closest to the proposed technical essence and the achieved effect is a method of producing pipes from a thermoplastic material, which consists in connecting the inner and outer walls of the pipe with longitudinal partitions to form longitudinal channels using an extruded plastic material through a caliber and then cooling the pipe to the final temperature using a cooling liquids 12 J..,. A disadvantage of pipes obtained by known methods is that when striking with a sharp tool, a gap forms on their outside, which then increases and spreads nq the entire length of the pipe, as a result of which the coarse goes out of order. These breaks are due to the fact that the outer side of the extruded plastic pipe is first cooled, and then (at a later stage) the inner wall connected to the outer wall is cooled down. As a result, the outer wall is under tension. It causes tension in the bijy wall. The purpose of the invention is to improve the quality of the pipe. This goal is achieved by the fact that according to the method of making a pipe from a thermoplastic material, consisting in connecting the inner and outer walls of the pile with longitudinal partitions with the formation of longitudinal channels by extruding the plastic material through a gauge and subsequent cooling of the pipe to the final temperature by means of cooling liquid the outer wall of the pipe is reheated to 50 ° -OoC, and the heating process takes less than 5 minutes. The heating process is carried out within 0.2-2 minutes. By extruding the plastic material, the inner and outer walls of the pipe are connected by longitudinal baffles to the formation of longitudinal channels and cooled to a final temperature, then the outer surface of the outer wall of the pipe is heated to 50-100 ° C, and the heating process is additionally less than 5 loin The heating process is carried out for 0.2-2 minutes. As a result, the elastic modulus of the outer seawater increases significantly and, consequently, the stress or tension of the inner wall supported at ambient temperature significantly decreases. A good result is obtained when the pipe is heated throughout the entire cross-section), in this case, internal and external. The sides are cooled gradually and simultaneously. The specified limits must be maintained. The same effect can be obtained by uniformly cooling the heat pipe (inner pipe from the inside and the outside. The existing voltage in the pipe can also be removed by volumetric heating of the pipe. The pipes obtained by the method are of high quality.
    权利要求:
    Claims (2)
    [1]
    1. METHOD OF PIPE MANUFACTURE FROM THERMOPLASTIC MATERIAL, which involves connecting the inner and outer walls of the pipe with longitudinal partitions with the formation of longitudinal channels by extruding plastic material through a gauge and then cooling the pipe to a final temperature by means of coolant, heating the fact that, in order to improve the quality of the pipe, the outer surface of the outer wall of the pipe is reheated to 50-100 ° C; moreover, the heating process is carried out for less than 5 minutes
    [2]
    2. The method according to p. 1, characterized by the fact that the heating process is carried out for 0.27 = 2 ’minutes.
    >
    .. I
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1052171A3|1983-10-30|Method for making pipe from thermoplastic material
    SU1648244A3|1991-05-07|Device for manufacturing tubes with crosswise ribs from thermoplastic polymer
    US4260640A|1981-04-07|Moulding food products
    GB550991A|1943-02-03|Improvements in and relating to the manufacture of coarse filaments
    EP0161802B1|1990-06-27|Solid phase deformation process
    US3646186A|1972-02-29|Process for producing continuous round jacketed lightguides
    US3246055A|1966-04-12|Applying ultrasonic vibration to thermoplastic polymers during molding
    CA2025995A1|1991-03-23|Process for producing a large calibre plastic pipe and an extrusion tool for the process
    GB514618A|1939-11-14|Apparatus for producing portions of desired size and/or shape from a mass of soft but solid consistency, for instance butter
    FI75524C|1988-07-11|Extruded plastic pipe with longitudinal channels in the wall.
    CA2266386A1|1998-04-02|Method and installation for treating plastic tubes with bi-axial drawing
    SU639417A3|1978-12-25|Method of producing wafer pipes
    SU1510967A1|1989-09-30|Method of preparing a pipe for bending
    GB2064576A|1981-06-17|Improvements in or relating to the manufacture of ethylene
    SU488639A1|1975-10-25|The method of calibration holes in parts
    SU1006254A1|1983-03-23|Method of making tubes from copolymer of methylmethacrylate with polybutadiene and styrene
    SU488641A1|1975-10-25|The method of pressing the distribution by freezing water parts such as pipes in tube boards
    SU925270A1|1982-05-07|Pot cheese cooling device
    JPH09117928A|1997-05-06|Method for molding thermoplastic material by injection on rotary core mold
    SU706215A1|1979-12-30|Method of producing bimetallic tubes by diffusion welding
    SU1303599A1|1987-04-15|Method for producing uniaxially oriented high-density polyethylene film
    JPH08323885A|1996-12-10|Manufacture of crystalline polyolefin tube
    US2146781A|1939-02-14|Method of producing transparent blocks of camphor
    SU1252002A1|1986-08-23|Method of producing straight-seam welded pipes
    SU806439A1|1981-03-03|Method of making thermoshrinking tubes
    同族专利:
    公开号 | 公开日
    SE7803862L|1978-10-07|
    SE8303187D0|1983-06-06|
    YU80978A|1984-04-30|
    IT1102562B|1985-10-07|
    GB1599845A|1981-10-07|
    DE2814595C2|1985-09-12|
    FR2386761A1|1978-11-03|
    NO153272C|1986-02-12|
    IE780670L|1978-10-06|
    ES469372A1|1979-02-01|
    NL7703820A|1978-10-10|
    SE8303187L|1983-06-06|
    FR2386761B1|1982-11-05|
    NL176804B|1985-01-02|
    DK151858C|1988-09-05|
    ATA244978A|1981-02-15|
    US4305899A|1981-12-15|
    IE46521B1|1983-07-13|
    BR7802169A|1978-11-21|
    IT7848751D0|1978-04-05|
    BE865742A|1978-10-06|
    JPS5640012B2|1981-09-17|
    FI781032A|1978-10-07|
    NL176804C|1985-06-03|
    AT364206B|1981-10-12|
    CH624458A5|1981-07-31|
    FI67193C|1985-02-11|
    MX147106A|1982-10-06|
    US4440195A|1984-04-03|
    DE2858267A1|1985-05-09|
    FI67193B|1984-10-31|
    DK153778A|1978-10-07|
    YU132283A|1986-06-30|
    SE430316B|1983-11-07|
    IN153728B|1984-08-11|
    NO852127L|1978-10-09|
    JPS5415524A|1979-02-05|
    SE457904B|1989-02-06|
    NO781175L|1978-10-09|
    NO153272B|1985-11-04|
    DK151858B|1988-01-11|
    DE2814595A1|1978-10-19|
    引用文献:
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    US3507939A|1966-12-12|1970-04-21|Phillips Petroleum Co|Plastic extrusion|
    BE722009A|1967-10-13|1969-03-14|
    DE1775674A1|1968-09-09|1970-12-17|Franz Baumgartner|Plastic pipes made of thermoplastics with a hollow pipe wall for large nominal widths for pressure pipes and non-pressurized pipes with and without reinforcement|
    US3668288A|1968-11-18|1972-06-06|Keiichi Takahashi|Method for making thermoplastic synthetic resin hollow structure articles|
    DE1914255A1|1969-03-20|1970-10-01|Buerkle Kg Kehlleistenfabrik|Preventing loss of support medium in - continuous hollow profiled plastics mfe|
    JPS4889971A|1972-02-29|1973-11-24|
    DE2324133A1|1973-05-12|1974-11-28|Hoechst Ag|OUTSIDE CALIBRATION OF EXTRUDED HOLLOW PROFILES MADE OF THERMOPLASTIC PLASTIC|
    US3907961A|1974-01-28|1975-09-23|Phillips Petroleum Co|Flexible cylinder for cooling an extruded pipe|
    US3941157A|1974-07-24|1976-03-02|Barnett Louis H|High strength multiple passageway plastic conduit|
    JPS5117260A|1974-08-01|1976-02-12|Kubota Ltd|Enkabinirupaipuno naimenmudokukaoshidashiseikeihoho|
    JPS5117261A|1974-08-01|1976-02-12|Kubota Ltd|Enkabinirupaipuno naimensenjooshidashiseikeihoho|
    JPS523215B2|1974-09-27|1977-01-26|
    JPS5144772U|1974-09-28|1976-04-02|
    NL7500386A|1975-01-13|1976-07-15|Wavin Bv|METHOD AND DEVICE FOR MANUFACTURING A PLASTIC TUBE WITH ELONGATED CHANNELS IN THE WALL.|
    JPS51111872A|1975-03-28|1976-10-02|Kubota Ltd|Method of extruding long plastic tubu to produce tubu with connecting socket protion|
    JPS51137462U|1975-04-30|1976-11-06|NL175753C|1977-11-18|1984-12-17|Wavin Bv|SOURCE TUBE.|
    DE3317661C2|1983-05-14|1986-06-26|Stettner & Co, 8560 Lauf|Chimney pipe|
    FR2596692B1|1986-04-04|1988-09-09|Atochem|EXTRUDED SEMICRYSTALLINE PLASTIC TUBES HAVING RESISTANCE TO COLD SHOCK AND IMPROVED TRACTION THROUGH HEAT TREATMENT AND THEIR MANUFACTURING METHOD|
    US5252157A|1989-05-01|1993-10-12|Central Plastics Company|Electrothermal fusion of large diameter pipes by electric heating wire wrapping and sleeve connector|
    US5514069A|1993-12-22|1996-05-07|Baxter International Inc.|Stress-bearing umbilicus for a compact centrifuge|
    US5661263A|1995-05-10|1997-08-26|Phaeton, Llc|Surface raceway and method|
    US6344020B1|1997-04-11|2002-02-05|Baxter International Inc.|Bearing and umbilicus gimbal with bearing retainer in blood processing system|
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    CA2408388C|2000-05-10|2007-04-17|Stephen Paletta|Multi-purpose rehabilitation of conduits|
    US6311730B2|2000-10-05|2001-11-06|G. Gregory Penza|Communications conduit installation method and conduit-containing product suitable for use therein|
    US6748982B2|2001-11-13|2004-06-15|Tokheim Holding B.V.|Integrated fuel delivery and vapor recovery system for a fuel dispenser|
    US7479123B2|2002-03-04|2009-01-20|Therakos, Inc.|Method for collecting a desired blood component and performing a photopheresis treatment|
    US7211037B2|2002-03-04|2007-05-01|Therakos, Inc.|Apparatus for the continuous separation of biological fluids into components and method of using same|
    JP4171280B2|2002-03-06|2008-10-22|積水化学工業株式会社|Rigid vinyl chloride resin tube|
    NL1021124C2|2002-03-28|2003-09-30|Nefit Buderus B V|Heat exchanger, combustion device comprising a heat exchanger, closing element for use in such a heat exchanger and method for manufacturing a heat exchanger.|
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    GB0620246D0|2006-10-12|2006-11-22|Univ Cambridge Tech|Extruded materials having capillary channels|
    US8277369B2|2010-06-15|2012-10-02|Fenwal, Inc.|Bearing and bearing assembly for umbilicus of a fluid processing system|
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    US9383044B2|2013-02-15|2016-07-05|Fenwal, Inc.|Low cost umbilicus without overmolding|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    NLAANVRAGE7703820,A|NL176804C|1977-04-06|1977-04-06|PLASTIC TUBE WITH LONG CHANNELS IN HIS WALL, AND METHOD FOR MANUFACTURING SUCH PLASTIC TUBE.|
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