FR2372014A1 - Procede pour uniformiser l'epaisseur des parois de corps creux en matiere thermoplastique et dispositif pour la mise en oeuvre du procede - Google Patents

Procede pour uniformiser l'epaisseur des parois de corps creux en matiere thermoplastique et dispositif pour la mise en oeuvre du procede

Info

Publication number
FR2372014A1
FR2372014A1 FR7735737A FR7735737A FR2372014A1 FR 2372014 A1 FR2372014 A1 FR 2372014A1 FR 7735737 A FR7735737 A FR 7735737A FR 7735737 A FR7735737 A FR 7735737A FR 2372014 A1 FR2372014 A1 FR 2372014A1
Authority
FR
France
Prior art keywords
thickness
elongate
wall
hollow
hollow body
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
FR7735737A
Other languages
English (en)
Other versions
FR2372014B1 (fr
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of FR2372014A1 publication Critical patent/FR2372014A1/fr
Application granted granted Critical
Publication of FR2372014B1 publication Critical patent/FR2372014B1/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
    • 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
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • B29C48/09—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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular 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
    • B29C48/30—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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/34—Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92571—Position, e.g. linear or angular
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92609—Dimensions
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92609—Dimensions
    • B29C2948/92647—Thickness
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92904—Die; Nozzle zone
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour sa mise en oeuvre destinés à uniformiser l'épaisseur des parois de corps creux en matière thermoplastique. Pour former ces objets, la matière plastique est extrudée en cordon, transformée aussitôt en un cordon creux et finalement étirée à la forme définitive par une pression interne, l'épaisseur de la paroi du cordon creux étant influencée avant allongement en fonction de la facilité variable de s'allonger, de façon que dans les zones s'allongeant facilement et/ou s'allongeant fortement, soit prévue une grande épaisseur correspondante et dans les zones pouvant s'allonger faiblement et/ou s'allongeant faiblement, soit prévue une faible épaisseur correspondante de la paroi, de façon que l'épaisseur de la paroi du corps creux après allongement corresponde à l'épaisseur désirée en tout point. Le procédé et le dispositif pour son application sont destinés à la fabrication de récipients, de tubes, de feuilles soufflées, etc.
FR7735737A 1976-11-27 1977-11-28 Procede pour uniformiser l'epaisseur des parois de corps creux en matiere thermoplastique et dispositif pour la mise en oeuvre du procede Granted FR2372014A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2654001A DE2654001C2 (de) 1976-11-27 1976-11-27 Vorrichtung zum Herstellen von aus thermoplastischem Kunstoff bestehenden Hohlkörpern

Publications (2)

Publication Number Publication Date
FR2372014A1 true FR2372014A1 (fr) 1978-06-23
FR2372014B1 FR2372014B1 (fr) 1983-02-18

Family

ID=5994163

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7735737A Granted FR2372014A1 (fr) 1976-11-27 1977-11-28 Procede pour uniformiser l'epaisseur des parois de corps creux en matiere thermoplastique et dispositif pour la mise en oeuvre du procede

Country Status (13)

Country Link
US (2) US4279857A (fr)
JP (1) JPS6054171B2 (fr)
AT (1) AT376606B (fr)
BR (1) BR7707871A (fr)
CA (1) CA1144323A (fr)
CH (1) CH629415A5 (fr)
DE (1) DE2654001C2 (fr)
ES (1) ES464475A1 (fr)
FR (1) FR2372014A1 (fr)
GB (1) GB1595599A (fr)
IT (1) IT1115545B (fr)
NL (1) NL7712957A (fr)
SE (1) SE7713105L (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
FR2512390A1 (fr) * 1980-11-15 1983-03-11 Mauser Werke Gmbh Buse de sortie d'une tete de filiere

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US4422838A (en) * 1979-12-27 1983-12-27 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Extrusion head for use in blow molding machine
DE3001705C2 (de) * 1980-01-18 1984-10-18 Wavin B.V., Zwolle Zentriervorrichtung für Formwerkzeuge von Strangpressen
JPS56144197A (en) * 1980-04-14 1981-11-10 Teibow Co Ltd Molding device for pen point in synthetic resin
DE3031333C2 (de) * 1980-08-20 1983-07-14 Battenfeld Maschinenfabriken Gmbh, 5882 Meinerzhagen Verfahren und Vorrichtung zum Einstellen der Wanddicke eines aus thermoplastischem Kunststoff extrudierten Schlauches
DE3043228A1 (de) * 1980-11-15 1982-07-01 Mauser-Werke GmbH, 5040 Brühl Strangpresskopf
US4735834A (en) * 1982-08-30 1988-04-05 Phillips Petroleum Company Plastic molding
US4496301A (en) * 1982-08-30 1985-01-29 Phillips Petroleum Company Plastic molding apparatus
US4650629A (en) * 1982-08-30 1987-03-17 Phillips Petroleum Company Plastic molding process
US4547246A (en) * 1982-08-31 1985-10-15 At&T Technologies, Inc. Extrusion method
US4495022A (en) * 1982-08-31 1985-01-22 At&T Technologies, Inc. Extrusion method and apparatus
DE3301248C2 (de) * 1983-01-15 1987-01-02 Mauser-Werke GmbH, 5040 Brühl Strangpreßkopf
DE3305242A1 (de) * 1983-02-16 1984-08-16 Battenfeld-Fischer Blasformtechnik GmbH, 5204 Lohmar Pinole fuer den dorn eines schlauchkopfes zur herstellung von schlauchabschnitten oder schlaeuchen aus thermoplastischem kunststoff
US4518343A (en) * 1983-03-07 1985-05-21 E. I. Du Pont De Nemours And Company Extrusion die
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US4279857A (en) 1981-07-21
CH629415A5 (de) 1982-04-30
SE7713105L (sv) 1978-05-28
NL7712957A (nl) 1978-05-30
CA1144323A (fr) 1983-04-12
JPS5377260A (en) 1978-07-08
IT1115545B (it) 1986-02-03
DE2654001A1 (de) 1978-06-08
GB1595599A (en) 1981-08-12
ES464475A1 (es) 1978-08-01
FR2372014B1 (fr) 1983-02-18
BR7707871A (pt) 1978-06-13
US4382766A (en) 1983-05-10
JPS6054171B2 (ja) 1985-11-29
AT376606B (de) 1984-12-10
ATA851777A (de) 1984-05-15
DE2654001C2 (de) 1986-02-06

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