DE2139321C3 - Vorrichtung zum kontinuierlichen Extrudieren von Strängen aus geschmolzenem Kunststoff - Google Patents

Vorrichtung zum kontinuierlichen Extrudieren von Strängen aus geschmolzenem Kunststoff

Info

Publication number
DE2139321C3
DE2139321C3 DE2139321A DE2139321A DE2139321C3 DE 2139321 C3 DE2139321 C3 DE 2139321C3 DE 2139321 A DE2139321 A DE 2139321A DE 2139321 A DE2139321 A DE 2139321A DE 2139321 C3 DE2139321 C3 DE 2139321C3
Authority
DE
Germany
Prior art keywords
piston
extruder
pressure
plastic
line
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.)
Expired
Application number
DE2139321A
Other languages
German (de)
English (en)
Other versions
DE2139321B2 (de
DE2139321A1 (de
Inventor
Norbert William Burlis
Daniel Andreas Talonn
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.)
Sherwood Medical Co
Original Assignee
Sherwood Medical Industries Inc
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 Sherwood Medical Industries Inc filed Critical Sherwood Medical Industries Inc
Publication of DE2139321A1 publication Critical patent/DE2139321A1/de
Publication of DE2139321B2 publication Critical patent/DE2139321B2/de
Application granted granted Critical
Publication of DE2139321C3 publication Critical patent/DE2139321C3/de
Expired legal-status Critical Current

Links

Classifications

    • 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
    • A61M25/0009—Making of catheters or other medical or surgical tubes
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/325—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/388—Plasticisers, homogenisers or feeders comprising two or more stages using a screw extruder and a ram or piston
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/475—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pistons, accumulators or press rams
    • 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)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Biophysics (AREA)
  • Pulmonology (AREA)
  • Anesthesiology (AREA)
  • Manufacturing & Machinery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
DE2139321A 1970-08-06 1971-08-05 Vorrichtung zum kontinuierlichen Extrudieren von Strängen aus geschmolzenem Kunststoff Expired DE2139321C3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6171570A 1970-08-06 1970-08-06

Publications (3)

Publication Number Publication Date
DE2139321A1 DE2139321A1 (de) 1972-02-10
DE2139321B2 DE2139321B2 (de) 1978-02-23
DE2139321C3 true DE2139321C3 (de) 1978-09-28

Family

ID=22037637

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2139321A Expired DE2139321C3 (de) 1970-08-06 1971-08-05 Vorrichtung zum kontinuierlichen Extrudieren von Strängen aus geschmolzenem Kunststoff

Country Status (7)

Country Link
US (1) US3674404A (enExample)
BE (1) BE770997A (enExample)
CA (1) CA964418A (enExample)
DE (1) DE2139321C3 (enExample)
FR (1) FR2101991A5 (enExample)
GB (1) GB1363914A (enExample)
SE (1) SE391479B (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023132852A1 (de) * 2023-11-24 2025-05-28 Technische Universität Darmstadt Körperschaft des öffentlichen Rechts Verfahren zum werkzeuglosen Herstellen einer Hohlstruktur

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4056344A (en) * 1970-09-01 1977-11-01 Lemelson Jerome H Apparatus for producing composite extrusions
GB1471115A (en) * 1973-04-11 1977-04-21 Gen Engineering Co Extrusion of plastics materials
US3983203A (en) * 1973-11-16 1976-09-28 Sherwood Medical Industries Inc. Method of making a catheter with an integral Luer lock means
US3914002A (en) * 1974-04-17 1975-10-21 Sherwood Medical Ind Inc Conductive tubing and method of making same
US4138457A (en) * 1976-08-13 1979-02-06 Sherwood Medical Industries Inc. Method of making a plastic tube with plural lumens
US4255107A (en) * 1978-05-26 1981-03-10 Advanced Drainage Systems, Inc. Control apparatus for producing uniform thickness corrugated tubing
US4333906A (en) * 1979-03-12 1982-06-08 Extracorporeal Medical Specialties, Inc. Process for producing hollow fibers having a non-uniform wall thickness and a non-uniform cross-sectional area
US4380520A (en) * 1979-03-12 1983-04-19 Extracorporeal Medical Specialties, Inc. Process for producing hollow fibres having a uniform wall thickness and a non-uniform cross-sectional area
US4364383A (en) * 1980-08-25 1982-12-21 Vcelka John L I.V. Flashback indication
DE3306533A1 (de) * 1983-02-24 1984-08-30 Bm-Elektronik Meletzky Kg, 1000 Berlin Wanddickenprogrammiervorrichtung fuer eine blasformmaschine
ATE81058T1 (de) * 1986-07-12 1992-10-15 Fly Fishing Techn Ltd Verfahren und vorrichtung zur herstellung von angelschnueren.
DE3708695A1 (de) * 1987-03-18 1988-09-29 Reinhard Michael Granulator zum granulieren schmelzender und erweichender stoffe
US4791914A (en) * 1987-04-24 1988-12-20 May Stephen C Endotracheal device
US4787894A (en) * 1987-10-26 1988-11-29 Turnbull Christopher J Meconium aspiration device
DE3737104A1 (de) * 1987-11-02 1989-05-11 Altenkirchener Kunststoff Schlauchstueck aus elastischem, gut rueckstellbarem kunststoff und verfahren zu seiner herstellung
DE3829234A1 (de) * 1988-08-29 1990-03-08 Nittel Gmbh & Co Kg Verfahren und vorrichtung zur herstellung von schlauchfolien
US5112546A (en) * 1991-05-10 1992-05-12 Comfort Gordon A Method of controlling thickness of thermoplastic extruded profile
EP0633120B1 (de) * 1993-06-29 1996-02-14 GREGOR HOFBAUER GmbH Verfahren und Vorrichtung zum Herstellen von Blasformteilen
US5614136A (en) * 1995-03-02 1997-03-25 Scimed Life Systems, Inc. Process to form dimensionally variable tubular members for use in catheter procedures
JP2001073933A (ja) * 1999-09-01 2001-03-21 Bridgestone Corp 容積型押出装置および粘性材料の押出方法
AU2003209418A1 (en) * 2002-01-29 2003-09-02 Amersham Biosciences Membrane Separations Corp. Spiraled surface hollow fiber membranes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023132852A1 (de) * 2023-11-24 2025-05-28 Technische Universität Darmstadt Körperschaft des öffentlichen Rechts Verfahren zum werkzeuglosen Herstellen einer Hohlstruktur

Also Published As

Publication number Publication date
DE2139321B2 (de) 1978-02-23
CA964418A (en) 1975-03-18
DE2139321A1 (de) 1972-02-10
GB1363914A (en) 1974-08-21
SE391479B (sv) 1977-02-21
BE770997A (fr) 1971-12-16
US3674404A (en) 1972-07-04
FR2101991A5 (enExample) 1972-03-31

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
8327 Change in the person/name/address of the patent owner

Owner name: SHERWOOD MEDICAL CO., 63103 ST. LOUIS, MO., US

8328 Change in the person/name/address of the agent

Free format text: WEICKMANN, H., DIPL.-ING. FINCKE, K., DIPL.-PHYS. DR. WEICKMANN, F., DIPL.-ING. HUBER, B., DIPL.-CHEM. LISKA, H., DIPL.-ING. DR.-ING. PRECHTEL, J., DIPL.-PHYS. DR.RER.NAT., PAT.-ANW., 8000 MUENCHEN

8339 Ceased/non-payment of the annual fee