FR2257409A1 - Multiple screw extruder with juxtaposed flight variations - to ensure positive cross blending during extrusion - Google Patents

Multiple screw extruder with juxtaposed flight variations - to ensure positive cross blending during extrusion

Info

Publication number
FR2257409A1
FR2257409A1 FR7441995A FR7441995A FR2257409A1 FR 2257409 A1 FR2257409 A1 FR 2257409A1 FR 7441995 A FR7441995 A FR 7441995A FR 7441995 A FR7441995 A FR 7441995A FR 2257409 A1 FR2257409 A1 FR 2257409A1
Authority
FR
France
Prior art keywords
flight
screw extruder
variations
during extrusion
multiple screw
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
FR7441995A
Other languages
English (en)
French (fr)
Other versions
FR2257409B1 (enrdf_load_stackoverflow
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.)
SOFISA
Original Assignee
SOFISA
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 SOFISA filed Critical SOFISA
Publication of FR2257409A1 publication Critical patent/FR2257409A1/fr
Application granted granted Critical
Publication of FR2257409B1 publication Critical patent/FR2257409B1/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
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B29B7/484—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws with two shafts provided with screws, e.g. one screw being shorter than the other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B29B7/488—Parts, e.g. casings, sealings; Accessories, e.g. flow controlling or throttling devices
    • B29B7/489—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
    • 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
    • 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
    • B29C48/42—Non-identical or non-mirrored 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
FR7441995A 1974-01-14 1974-12-19 Multiple screw extruder with juxtaposed flight variations - to ensure positive cross blending during extrusion Granted FR2257409A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH46474A CH577885A5 (enrdf_load_stackoverflow) 1974-01-14 1974-01-14

Publications (2)

Publication Number Publication Date
FR2257409A1 true FR2257409A1 (en) 1975-08-08
FR2257409B1 FR2257409B1 (enrdf_load_stackoverflow) 1976-12-31

Family

ID=4187608

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7441995A Granted FR2257409A1 (en) 1974-01-14 1974-12-19 Multiple screw extruder with juxtaposed flight variations - to ensure positive cross blending during extrusion

Country Status (8)

Country Link
JP (1) JPS50102655A (enrdf_load_stackoverflow)
BE (1) BE824367A (enrdf_load_stackoverflow)
CH (1) CH577885A5 (enrdf_load_stackoverflow)
DE (1) DE2500102A1 (enrdf_load_stackoverflow)
FR (1) FR2257409A1 (enrdf_load_stackoverflow)
IT (1) IT1028281B (enrdf_load_stackoverflow)
NL (1) NL7416188A (enrdf_load_stackoverflow)
SE (1) SE7500320L (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10624382B2 (en) 2017-06-01 2020-04-21 Wenger Manufacturing Inc. High specific mechanical energy extrusion screw assembly

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5358965U (enrdf_load_stackoverflow) * 1976-10-21 1978-05-19
JPS5999725U (ja) * 1982-12-24 1984-07-05 株式会社日本製鋼所 ２軸押出機
EP0265377A3 (fr) * 1986-10-23 1989-05-03 Charles Maillefer Extrudeuse multi-vis
JP4149283B2 (ja) * 2003-02-07 2008-09-10 住友ゴム工業株式会社 二軸混練押出機

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10624382B2 (en) 2017-06-01 2020-04-21 Wenger Manufacturing Inc. High specific mechanical energy extrusion screw assembly
US11254041B2 (en) 2017-06-01 2022-02-22 Wenger Manufacturing Inc. High specific mechanical energy extrusion screw assembly

Also Published As

Publication number Publication date
JPS50102655A (enrdf_load_stackoverflow) 1975-08-14
BE824367A (fr) 1975-07-14
IT1028281B (it) 1979-01-30
CH577885A5 (enrdf_load_stackoverflow) 1976-07-30
NL7416188A (nl) 1975-07-16
SE7500320L (enrdf_load_stackoverflow) 1975-07-15
DE2500102A1 (de) 1975-07-31
FR2257409B1 (enrdf_load_stackoverflow) 1976-12-31

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Legal Events

Date Code Title Description
ST Notification of lapse