GB791234A - Mixing and extruding apparatus for thermoplastic materials - Google Patents

Mixing and extruding apparatus for thermoplastic materials

Info

Publication number
GB791234A
GB791234A GB28126/54A GB2812654A GB791234A GB 791234 A GB791234 A GB 791234A GB 28126/54 A GB28126/54 A GB 28126/54A GB 2812654 A GB2812654 A GB 2812654A GB 791234 A GB791234 A GB 791234A
Authority
GB
United Kingdom
Prior art keywords
worm
casing
mixing
volume
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
GB28126/54A
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.)
Welding Engineers Inc
Original Assignee
Welding Engineers Inc
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 Welding Engineers Inc filed Critical Welding Engineers Inc
Priority to GB28126/54A priority Critical patent/GB791234A/en
Publication of GB791234A publication Critical patent/GB791234A/en
Expired 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
    • B29C48/03—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
    • B29C48/395—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)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

791,234. Continuous-discharge mixing- machines. WELDING ENGINEERS, Inc. Sept. 29, 1954 [Feb. 23, 1954], No. 28126/54. Class 86 [Also in Group V] In a mixing device comprising a worm 10 disposed in a cylindrical casing 11 which extrudes material through a die 14, the worm is so constructed that the free volume of space between the worm and casing progressively increases over a predetermined length of the worm in the direction of travel of the material. This increase in volume may be achieved by increasing the pitch of the worm, as shown in Fig. 3,. or by decreasing the diameter of the worm stem, as shown at the left-hand end of Fig. 1. In a modification, the increased volume is provided at the centre of the worm. In Fig. 5, a casing 50 has double bores 51, 52 containing worms 55, 56 which are rotated in opposite directions. The worm stems are reduced between G and H. Fig. 6 shows a worm 75 which tapers from the feeding opening 84 to a restriction 86 and thereafter the stem gradually decreases in diameter, the pitch remaining constant throughout. Jackets in the casing are provided to permit temperature control of the inner wall of the casing.
GB28126/54A 1954-09-29 1954-09-29 Mixing and extruding apparatus for thermoplastic materials Expired GB791234A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB28126/54A GB791234A (en) 1954-09-29 1954-09-29 Mixing and extruding apparatus for thermoplastic materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB28126/54A GB791234A (en) 1954-09-29 1954-09-29 Mixing and extruding apparatus for thermoplastic materials

Publications (1)

Publication Number Publication Date
GB791234A true GB791234A (en) 1958-02-26

Family

ID=22148579

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28126/54A Expired GB791234A (en) 1954-09-29 1954-09-29 Mixing and extruding apparatus for thermoplastic materials

Country Status (1)

Country Link
GB (1) GB791234A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014292A1 (en) * 1978-12-18 1980-08-20 Ford Motor Company Limited Method of compounding melt-forming resins and mica particles
WO2007101752A1 (en) * 2006-03-08 2007-09-13 Kraussmaffei Technologies Gmbh Extruder/injection molding screw
DE102010003601A1 (en) * 2010-04-01 2011-10-06 Frank Börner Twin-screw extruder and process for thermomechanical digestion of organic raw materials and residues

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014292A1 (en) * 1978-12-18 1980-08-20 Ford Motor Company Limited Method of compounding melt-forming resins and mica particles
WO2007101752A1 (en) * 2006-03-08 2007-09-13 Kraussmaffei Technologies Gmbh Extruder/injection molding screw
DE102010003601A1 (en) * 2010-04-01 2011-10-06 Frank Börner Twin-screw extruder and process for thermomechanical digestion of organic raw materials and residues
EP2371525A3 (en) * 2010-04-01 2011-12-07 Börner, Frank Twin screw extruder and method for the thermo-mechanical pulping of organic raw and residual materials
DE102010003601B4 (en) * 2010-04-01 2015-05-13 Frank Börner Twin-screw extruder

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