FR2380123A1 - Extruder die head mandrels for suppressing turbulent flow - to facilitate die design for tubular profiles - Google Patents

Extruder die head mandrels for suppressing turbulent flow - to facilitate die design for tubular profiles

Info

Publication number
FR2380123A1
FR2380123A1 FR7704049A FR7704049A FR2380123A1 FR 2380123 A1 FR2380123 A1 FR 2380123A1 FR 7704049 A FR7704049 A FR 7704049A FR 7704049 A FR7704049 A FR 7704049A FR 2380123 A1 FR2380123 A1 FR 2380123A1
Authority
FR
France
Prior art keywords
die
screw
tubular profiles
turbulent flow
design
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.)
Pending
Application number
FR7704049A
Other languages
French (fr)
Inventor
M Et Mme Blaise Franc Figuereo
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.)
EROPOL
Original Assignee
EROPOL
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 EROPOL filed Critical EROPOL
Priority to FR7704049A priority Critical patent/FR2380123A1/en
Publication of FR2380123A1 publication Critical patent/FR2380123A1/en
Pending 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/695—Flow dividers, e.g. breaker plates
    • B29C48/70—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows
    • 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
    • B29C48/30—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
    • B29C48/92—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
    • 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
    • B29C2948/92819—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
    • B29C48/03—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
    • B29C48/06—Rod-shaped

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

An extrusion die incorporates a static conical mandrel which butts with the end of the screw and channels the melt from the screw through an annular array of passages with outlets which are covered by individual flap valves. The positions of the flaps are controlled by rods which are adjustable from outside the die. The melt passes into the profile lands via a die entry having a profile of optimum form for suppressing local turbulence. Used for producing solid or tubular profiles from material flowing in a non-turbulent manner for which the flow characteristics are relatively predictable for the purpose of die design. The flow pattern can be adjusted and balanced while the machine is running, without involving relative radial shifts of the mandrel and the screw.
FR7704049A 1977-02-14 1977-02-14 Extruder die head mandrels for suppressing turbulent flow - to facilitate die design for tubular profiles Pending FR2380123A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7704049A FR2380123A1 (en) 1977-02-14 1977-02-14 Extruder die head mandrels for suppressing turbulent flow - to facilitate die design for tubular profiles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7704049A FR2380123A1 (en) 1977-02-14 1977-02-14 Extruder die head mandrels for suppressing turbulent flow - to facilitate die design for tubular profiles

Publications (1)

Publication Number Publication Date
FR2380123A1 true FR2380123A1 (en) 1978-09-08

Family

ID=9186679

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7704049A Pending FR2380123A1 (en) 1977-02-14 1977-02-14 Extruder die head mandrels for suppressing turbulent flow - to facilitate die design for tubular profiles

Country Status (1)

Country Link
FR (1) FR2380123A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2474394A1 (en) * 1979-12-19 1981-07-31 Eropol Extrusion nozzle with sliding baffles - to choke and baffle the flow for positive control of the flow area circumferentially
FR2494629A1 (en) * 1980-11-21 1982-05-28 Eropol Sa Extrusion nozzle with sliding baffles - to choke and baffle the flow for positive control of the flow area circumferentially
US4347050A (en) * 1979-12-19 1982-08-31 Figuereo Blaise F Extrusion vessel with controlled circular distribution of the extruded material
WO1988006514A1 (en) * 1987-03-05 1988-09-07 Siegle, Karl Device for guiding and apportioning extrudable substances

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2474394A1 (en) * 1979-12-19 1981-07-31 Eropol Extrusion nozzle with sliding baffles - to choke and baffle the flow for positive control of the flow area circumferentially
US4347050A (en) * 1979-12-19 1982-08-31 Figuereo Blaise F Extrusion vessel with controlled circular distribution of the extruded material
EP0031742B1 (en) * 1979-12-19 1983-12-14 EROPOL, Société Anonyme Extrusion enclosure for controlled circular distribution of the extruded material and for an incorporated nozzle
FR2494629A1 (en) * 1980-11-21 1982-05-28 Eropol Sa Extrusion nozzle with sliding baffles - to choke and baffle the flow for positive control of the flow area circumferentially
WO1988006514A1 (en) * 1987-03-05 1988-09-07 Siegle, Karl Device for guiding and apportioning extrudable substances

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Legal Events

Date Code Title Description
AR Application made for restoration
TP Transmission of property
BR Restoration of rights