ZA816076B - Process and apparatus for cooling plastics hollow profiles - Google Patents

Process and apparatus for cooling plastics hollow profiles

Info

Publication number
ZA816076B
ZA816076B ZA816076A ZA816076A ZA816076B ZA 816076 B ZA816076 B ZA 816076B ZA 816076 A ZA816076 A ZA 816076A ZA 816076 A ZA816076 A ZA 816076A ZA 816076 B ZA816076 B ZA 816076B
Authority
ZA
South Africa
Prior art keywords
hollow profiles
cooling
synthetic material
plastics hollow
capillary tube
Prior art date
Application number
ZA816076A
Inventor
Gerhard V Hoesslin
Juergen Hesse
Original Assignee
Messer Griesheim Gmbh
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 Messer Griesheim Gmbh filed Critical Messer Griesheim Gmbh
Publication of ZA816076B publication Critical patent/ZA816076B/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
    • F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
    • 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
    • B29C48/911—Cooling
    • B29C48/9115—Cooling of hollow articles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A61M2025/1043—Balloon catheters with special features or adapted for special applications
    • A61M2025/105—Balloon catheters with special features or adapted for special applications having a balloon suitable for drug delivery, e.g. by using holes for delivery, drug coating or membranes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

1. Process for cooling of hollow synthetic material profiles during extrusion by means of direct heat exchange with liquid nitrogen, which is introduced via a boring in the mandrel (3) of the extrusion tool into the interior of the hollow synthetic material (6), characterised in that the nitrogen has a pressure of 2 to 8 bar and a temperature below its boiling point, what means that it is subcooled, and that the liquid in the extrusion tool moves through a capillary tube (4) with a maximum inside diameter of 1,2 mm, which capillary tube is enclosed by an insulation tube (5).
ZA816076A 1980-09-03 1981-09-02 Process and apparatus for cooling plastics hollow profiles ZA816076B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19803033054 DE3033054A1 (en) 1980-09-03 1980-09-03 METHOD AND DEVICE FOR COOLING HOLLOW PLASTIC PROFILES

Publications (1)

Publication Number Publication Date
ZA816076B true ZA816076B (en) 1982-09-29

Family

ID=6110971

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA816076A ZA816076B (en) 1980-09-03 1981-09-02 Process and apparatus for cooling plastics hollow profiles

Country Status (4)

Country Link
EP (1) EP0047378B1 (en)
AT (1) ATE13499T1 (en)
DE (1) DE3033054A1 (en)
ZA (1) ZA816076B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3241005A1 (en) * 1982-11-06 1984-08-02 Battenfeld Maschinenfabriken Gmbh, 5882 Meinerzhagen Process and device for cooling hollow profiles, especially pipes or tubes, of thermoplastics during extrusion
DE3609410A1 (en) * 1986-03-20 1987-09-24 Hans Udo Reichstadt Process for introducing a reflective coating layer into the cavities of plastic window profiles or the like
DE9112244U1 (en) * 1991-10-01 1991-12-05 Link, Edmar, 7500 Karlsruhe, De
DE4111229A1 (en) * 1991-04-08 1992-10-15 Wilhelm Hegler DEVICE FOR PRODUCING PLASTIC TUBES
DE4117221C2 (en) * 1991-05-27 1996-02-22 Schueco Int Kg Method and device for producing extruded hollow chamber profiles from thermoplastic material
AT409474B (en) * 1992-09-01 2002-08-26 Greiner & Soehne C A EXTRUSION TOOL FOR COMPONENTS PROVIDED WITH AT LEAST ONE CAVITY AND METHOD FOR PRODUCING SUCH COMPONENTS
EP0857560A1 (en) * 1997-02-05 1998-08-12 Linde Aktiengesellschaft Method and apparatus for cooling hollow extruded profiles
ATE249328T1 (en) * 1997-02-05 2003-09-15 Linde Ag METHOD AND DEVICE FOR COOLING EXTRUDED HOLLOW PROFILES
DE19832259B4 (en) * 1998-07-17 2005-06-16 Profine Gmbh Extrusion tool for window profiles
EP2039381B1 (en) 2006-07-11 2013-09-04 Tsukada Medical Research Co., Ltd. Continuous drug solution infusion device
CN106826390B (en) * 2017-02-23 2019-03-05 华中科技大学 A kind of difficult-to-machine material deep cooling system of processing automating liquid nitrogen flow control
CN111843600B (en) * 2020-07-16 2022-01-14 佛山市迈界金属制品有限公司 Cutting machine capable of cooling and processing metal and keeping tabletop clean

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2324133A1 (en) * 1973-05-12 1974-11-28 Hoechst Ag OUTSIDE CALIBRATION OF EXTRUDED HOLLOW PROFILES MADE OF THERMOPLASTIC PLASTIC
DE2345957C2 (en) * 1973-09-12 1984-05-24 Erich 8151 Neukolbing Weichenrieder Method and device for the production of extruded, strand-shaped plastic hollow profiles
DE2456386A1 (en) * 1974-11-29 1976-06-10 Linde Ag METHOD AND DEVICE FOR PRODUCING A PLASTIC PIPE
FR2442714A1 (en) * 1978-11-29 1980-06-27 Ind Plastiche Vernici Spa Extrusion die with sprays for internal cooling - to increase and control the rate of cooling throughout the multichannel hollow profiles

Also Published As

Publication number Publication date
DE3033054A1 (en) 1982-04-01
EP0047378A2 (en) 1982-03-17
EP0047378A3 (en) 1983-01-05
DE3033054C2 (en) 1988-05-26
EP0047378B1 (en) 1985-05-29
ATE13499T1 (en) 1985-06-15

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