GB733585A - Screw press for mixing and extruding plastic materials - Google Patents

Screw press for mixing and extruding plastic materials

Info

Publication number
GB733585A
GB733585A GB21200/53A GB2120053A GB733585A GB 733585 A GB733585 A GB 733585A GB 21200/53 A GB21200/53 A GB 21200/53A GB 2120053 A GB2120053 A GB 2120053A GB 733585 A GB733585 A GB 733585A
Authority
GB
United Kingdom
Prior art keywords
screws
mixing
screw
screw press
diameter
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.)
Expired
Application number
GB21200/53A
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 GB733585A publication Critical patent/GB733585A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/24—Extrusion presses; Dies therefor using screws or worms
    • B30B11/245—Extrusion presses; Dies therefor using screws or worms using two or more screws working in different chambers
    • 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
    • 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
    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/38—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in the same barrel
    • 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

Landscapes

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

Abstract

733,585. Mixing-appliances. PASQUETTI, C. July 30, 1953 [Oct. 2, 1952], No. 21200/53. Class 86. [Also in Group V] A screw press for plastic material such as thermoplastic resins and compositions comprises mixing-chambers 3a, 3b, 3c, 3d communicating with each other via openings 6a, 6b, 6c, and housing pairs of side-by-side intermeshing screws 4a, 4b, 4c, 4d driven by mechanisms, shown diagrammatically at 9a, 9b, 9c, 9d at different speeds in each chamber, either by independent motors with variable transmission or by one motor and gear transmission. The material is fed in via hopper 5 and in opposite directions through alternate chambers to the extrusion die 7. The screws may be either constant in diameter and gradually reduced in pitch, with consequent variation in the number of threads, or each pair of screws may be of constant screw pitch and number of threads smaller than those of the preceding pair of screws. Each screw may alternatively be subdivided into several sections decreasing in diameter. A hole 11 is formed in bushing 10 supporting screws 4 to discharge material reaching the clearance between parts 8 and 10.
GB21200/53A 1952-10-02 1953-07-30 Screw press for mixing and extruding plastic materials Expired GB733585A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT317570X 1952-10-02

Publications (1)

Publication Number Publication Date
GB733585A true GB733585A (en) 1955-07-13

Family

ID=11234320

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21200/53A Expired GB733585A (en) 1952-10-02 1953-07-30 Screw press for mixing and extruding plastic materials

Country Status (3)

Country Link
CH (1) CH317570A (en)
FR (1) FR1082192A (en)
GB (1) GB733585A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1063075A2 (en) * 1999-06-11 2000-12-27 COSTRUZIONI MECCANICHE LUIGI BANDERA S.p.A. Compact extruder with multiple parallel screws

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU34234A1 (en) * 1955-08-23 1900-01-01
DE1168631B (en) * 1958-08-29 1964-04-23 Basf Ag Device for processing thermoplastic plastics on screw presses and kneaders

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1063075A2 (en) * 1999-06-11 2000-12-27 COSTRUZIONI MECCANICHE LUIGI BANDERA S.p.A. Compact extruder with multiple parallel screws
EP1063075A3 (en) * 1999-06-11 2004-07-28 COSTRUZIONI MECCANICHE LUIGI BANDERA S.p.A. Compact extruder with multiple parallel screws

Also Published As

Publication number Publication date
CH317570A (en) 1956-11-30
FR1082192A (en) 1954-12-27

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