FR2292574A1 - Rapidly cooling extruded tubing - by injecting liquid nitrogen into the tubing (BE280576) - Google Patents

Rapidly cooling extruded tubing - by injecting liquid nitrogen into the tubing (BE280576)

Info

Publication number
FR2292574A1
FR2292574A1 FR7535790A FR7535790A FR2292574A1 FR 2292574 A1 FR2292574 A1 FR 2292574A1 FR 7535790 A FR7535790 A FR 7535790A FR 7535790 A FR7535790 A FR 7535790A FR 2292574 A1 FR2292574 A1 FR 2292574A1
Authority
FR
France
Prior art keywords
tubing
liquid nitrogen
nozzle
die
rapidly cooling
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
FR7535790A
Other languages
French (fr)
Other versions
FR2292574B3 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Linde GmbH
Original Assignee
Linde 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 Linde GmbH filed Critical Linde GmbH
Publication of FR2292574A1 publication Critical patent/FR2292574A1/en
Application granted granted Critical
Publication of FR2292574B3 publication Critical patent/FR2292574B3/fr
Granted legal-status Critical Current

Links

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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/0015—Making articles of indefinite length, e.g. corrugated tubes
    • B29C49/0021—Making articles of indefinite length, e.g. corrugated tubes using moulds or mould parts movable in a closed path, e.g. mounted on movable endless supports
    • 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
    • B29C48/03—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
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • 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
    • B29C48/901—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 of hollow bodies
    • B29C48/903—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 of hollow bodies externally
    • 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
    • B29C48/904—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 dry calibration, i.e. no quenching tank, e.g. with water spray for cooling or lubrication
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/66—Cooling by refrigerant introduced into the blown article
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/16—Cooling
    • B29C2035/1616—Cooling using liquids
    • B29C2035/1625—Cooling using liquids other than water
    • B29C2035/165—Cooling using liquids other than water liquified gases
    • 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
    • B29C48/911—Cooling
    • B29C48/9115—Cooling of hollow articles
    • B29C48/912—Cooling of hollow articles of tubular films
    • B29C48/913—Cooling of hollow articles of tubular films externally
    • 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
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/003—Tubular articles having irregular or rough surfaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

Plastic tubing is produced in a cooled die, in which an overpressure is applied to the interior of the tubing where an extremely cold medium is injected which evaporates or sublimes. The cooling method produces a higher output rate with low-cost equipment. The extruder nozzle and a central thermally insulated bore for liquid nitrogen are fed from a supply source. This coolant is injected from a nozzle into the tubing so that it evaporates before even reaching the tube wall. A plug, located at about the end of the die, is connected to the nozzle e.g. by a chain and acts as a pressure regulator, the nitrogen escaping via the outlet in the plug. The die itself is water-cooled.
FR7535790A 1974-11-29 1975-11-24 Rapidly cooling extruded tubing - by injecting liquid nitrogen into the tubing (BE280576) Granted FR2292574A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742456386 DE2456386A1 (en) 1974-11-29 1974-11-29 METHOD AND DEVICE FOR PRODUCING A PLASTIC PIPE

Publications (2)

Publication Number Publication Date
FR2292574A1 true FR2292574A1 (en) 1976-06-25
FR2292574B3 FR2292574B3 (en) 1978-08-25

Family

ID=5931992

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7535790A Granted FR2292574A1 (en) 1974-11-29 1975-11-24 Rapidly cooling extruded tubing - by injecting liquid nitrogen into the tubing (BE280576)

Country Status (9)

Country Link
BE (1) BE836133A (en)
BR (1) BR7507871A (en)
CH (1) CH601004A5 (en)
DE (1) DE2456386A1 (en)
ES (1) ES443100A1 (en)
FR (1) FR2292574A1 (en)
NL (1) NL7513933A (en)
NO (1) NO754022L (en)
ZA (1) ZA757365B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2530531A1 (en) * 1982-04-29 1984-01-27 Aga Ab METHOD AND APPARATUS FOR INTERIOR COOLING TUBULAR OBJECTS DURING THEIR EXTRUSION

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL168750C (en) * 1976-11-11 1982-05-17 Ir Jan Floris Ingen Housz METHOD AND APPARATUS FOR MANUFACTURING AN EXTERNALLY CALIBRATED TUBE FROM A THERMOPLASTIC PLASTIC BY EXTRUSION
DE3033054A1 (en) * 1980-09-03 1982-04-01 Messer Griesheim Gmbh, 6000 Frankfurt METHOD AND DEVICE FOR COOLING HOLLOW PLASTIC PROFILES
DE4020896C2 (en) * 1989-07-10 1993-11-18 Gehring Sondermaschinenbau Sch Process and device for external cooling of extruded thermoplastic plastic profiles
ATE249328T1 (en) 1997-02-05 2003-09-15 Linde Ag METHOD AND DEVICE FOR COOLING EXTRUDED HOLLOW PROFILES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2530531A1 (en) * 1982-04-29 1984-01-27 Aga Ab METHOD AND APPARATUS FOR INTERIOR COOLING TUBULAR OBJECTS DURING THEIR EXTRUSION

Also Published As

Publication number Publication date
NO754022L (en) 1976-06-01
ZA757365B (en) 1976-11-24
BR7507871A (en) 1976-08-10
FR2292574B3 (en) 1978-08-25
CH601004A5 (en) 1978-06-30
ES443100A1 (en) 1977-04-16
AU8710475A (en) 1977-06-02
DE2456386A1 (en) 1976-06-10
NL7513933A (en) 1976-06-01
BE836133A (en) 1976-05-28

Similar Documents

Publication Publication Date Title
US3661483A (en) Apparatus for controlling the flow of liquid
GB1064573A (en) Method and means for extruding profiled tubing made of thermoplastic synthetic material
ES388337A1 (en) Manufacture of insulated electric cables
GB1217729A (en) Method of and plant for continuously providing a metal tube with a heat and sound insulating sheath
FR2292574A1 (en) Rapidly cooling extruded tubing - by injecting liquid nitrogen into the tubing (BE280576)
US3500497A (en) Blow molding apparatus with cooling means
ZA816076B (en) Process and apparatus for cooling plastics hollow profiles
FR2086713A5 (en) Drawing thermoplastic profiles - expanded by vacuum and calibrated
US3760599A (en) Method and apparatus for controlling the flowliquid
ES251719A1 (en) Improved apparatus and process for the production of tubes and tubular films
GB1263562A (en) Method of perforating a tube
GB783449A (en) Improvements in or relating to the extrusion of organic thermoplastic materials
ES463034A1 (en) Method of producing a thermally and acoustically insulated pipe
GB1104079A (en) Apparatus for producing synthetic resin tubes
GB1201485A (en) Methods of and apparatus for extruding solid plastic materials
NL6916021A (en) Chilling blow-moulded or calibrated parisons - mouldings or extrudates with supercritical liquid
ES390958A1 (en) Foamed thermoplastics
GB1536713A (en) Method and apparatus for extruding thermoplastics film
GB1433136A (en) Moulding articles
ES383545A1 (en) Extrusion of thermoplastic materials
ES431181A2 (en) Manufacture of insulated electric cables
NL7511268A (en) Deforming thermoplastic tube into double pipe sockets - in mould with pressurised gas followed by pressurised coolant flow
FR2252566A1 (en) Temperature sensor for fluids in pipes - clamp and shell maintain sensor in contact with pipe
GB1296339A (en)
SE7310168L (en)

Legal Events

Date Code Title Description
ST Notification of lapse