FR2180570A1 - Multiple screw extrusion dies - with independent flow and control downstream from each screw tip - Google Patents

Multiple screw extrusion dies - with independent flow and control downstream from each screw tip

Info

Publication number
FR2180570A1
FR2180570A1 FR7214209A FR7214209A FR2180570A1 FR 2180570 A1 FR2180570 A1 FR 2180570A1 FR 7214209 A FR7214209 A FR 7214209A FR 7214209 A FR7214209 A FR 7214209A FR 2180570 A1 FR2180570 A1 FR 2180570A1
Authority
FR
France
Prior art keywords
die
screw
pref
independent flow
extrusion dies
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
FR7214209A
Other languages
French (fr)
Other versions
FR2180570B1 (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.)
Saint Gobain PAM SA
Original Assignee
Saint Gobain PAM SA
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 Saint Gobain PAM SA filed Critical Saint Gobain PAM SA
Priority to FR7214209A priority Critical patent/FR2180570A1/en
Publication of FR2180570A1 publication Critical patent/FR2180570A1/en
Application granted granted Critical
Publication of FR2180570B1 publication Critical patent/FR2180570B1/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
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • 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
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered 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
    • B29C48/03—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
    • B29C48/345—Extrusion nozzles comprising two or more adjacently arranged ports, for simultaneously extruding multiple strands, e.g. for pelletising
    • 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
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B29C48/41—Intermeshing counter-rotating screws
    • 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
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • B29C49/04108—Extrusion blow-moulding extruding several parisons parallel to each other at the same time

Landscapes

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

Abstract

Multiple screw extruder where the output from each screw tip is fed to a different outlet die. Pref. any flow differentials due to variations in die path length are balanced by restricting the shorter path(s), pref. by extending the die lands. Pref. the outlet passages can be adjusted individually w.r.t. the screw tips and their axes. Claimed for extrusion blow moulding machines using multiple parisons. Overall die length said to be shorter than systems which split a common extrudate to different dies, to thus facilitate integration with a blow moulding system and independent balancing of the parison extrusion rates.
FR7214209A 1972-04-21 1972-04-21 Multiple screw extrusion dies - with independent flow and control downstream from each screw tip Granted FR2180570A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7214209A FR2180570A1 (en) 1972-04-21 1972-04-21 Multiple screw extrusion dies - with independent flow and control downstream from each screw tip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7214209A FR2180570A1 (en) 1972-04-21 1972-04-21 Multiple screw extrusion dies - with independent flow and control downstream from each screw tip

Publications (2)

Publication Number Publication Date
FR2180570A1 true FR2180570A1 (en) 1973-11-30
FR2180570B1 FR2180570B1 (en) 1974-12-20

Family

ID=9097304

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7214209A Granted FR2180570A1 (en) 1972-04-21 1972-04-21 Multiple screw extrusion dies - with independent flow and control downstream from each screw tip

Country Status (1)

Country Link
FR (1) FR2180570A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002066229A1 (en) * 2001-02-16 2002-08-29 Unicor Gmbh Rahn Plastmaschinen Device for producing plastic pipes
WO2009141027A1 (en) * 2008-05-21 2009-11-26 Alpla Werke Alwin Lehner Gmbh & Co. Kg Extrusion blow-molding method for plastic containers, particularly plastic bottles

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002066229A1 (en) * 2001-02-16 2002-08-29 Unicor Gmbh Rahn Plastmaschinen Device for producing plastic pipes
WO2009141027A1 (en) * 2008-05-21 2009-11-26 Alpla Werke Alwin Lehner Gmbh & Co. Kg Extrusion blow-molding method for plastic containers, particularly plastic bottles
US9138930B2 (en) 2008-05-21 2015-09-22 Alpla Werke Alwin Lehner Gmbh & Co. Kg Extrusion blow molding method for plastic containers, especially plastic bottles

Also Published As

Publication number Publication date
FR2180570B1 (en) 1974-12-20

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Legal Events

Date Code Title Description
ST Notification of lapse