IT1028281B - EXTRUDER WITH MANY SCREWS IN PARTICULAR FOR THERMOPLASTIC MATERIALS - Google Patents

EXTRUDER WITH MANY SCREWS IN PARTICULAR FOR THERMOPLASTIC MATERIALS

Info

Publication number
IT1028281B
IT1028281B IT19152/75A IT1915275A IT1028281B IT 1028281 B IT1028281 B IT 1028281B IT 19152/75 A IT19152/75 A IT 19152/75A IT 1915275 A IT1915275 A IT 1915275A IT 1028281 B IT1028281 B IT 1028281B
Authority
IT
Italy
Prior art keywords
extruder
thermoplastic materials
many screws
screws
many
Prior art date
Application number
IT19152/75A
Other languages
Italian (it)
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
Application granted granted Critical
Publication of IT1028281B publication Critical patent/IT1028281B/en

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)
IT19152/75A 1974-01-14 1975-01-10 EXTRUDER WITH MANY SCREWS IN PARTICULAR FOR THERMOPLASTIC MATERIALS IT1028281B (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
IT1028281B true IT1028281B (en) 1979-01-30

Family

ID=4187608

Family Applications (1)

Application Number Title Priority Date Filing Date
IT19152/75A IT1028281B (en) 1974-01-14 1975-01-10 EXTRUDER WITH MANY SCREWS IN PARTICULAR FOR THERMOPLASTIC MATERIALS

Country Status (8)

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

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5358965U (en) * 1976-10-21 1978-05-19
JPS5999725U (en) * 1982-12-24 1984-07-05 株式会社日本製鋼所 twin screw extruder
EP0265377A3 (en) * 1986-10-23 1989-05-03 Charles Maillefer Multiple screw extruder
JP4149283B2 (en) * 2003-02-07 2008-09-10 住友ゴム工業株式会社 Twin-screw kneading extruder
MX2019009375A (en) 2017-06-01 2019-09-23 Wenger Mfg High specific mechanical energy extrusion screw assembly.

Also Published As

Publication number Publication date
JPS50102655A (en) 1975-08-14
FR2257409A1 (en) 1975-08-08
CH577885A5 (en) 1976-07-30
NL7416188A (en) 1975-07-16
SE7500320L (en) 1975-07-15
FR2257409B1 (en) 1976-12-31
DE2500102A1 (en) 1975-07-31
BE824367A (en) 1975-07-14

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