GB1145800A - Improved extrusion apparatus - Google Patents

Improved extrusion apparatus

Info

Publication number
GB1145800A
GB1145800A GB26646/67A GB2664667A GB1145800A GB 1145800 A GB1145800 A GB 1145800A GB 26646/67 A GB26646/67 A GB 26646/67A GB 2664667 A GB2664667 A GB 2664667A GB 1145800 A GB1145800 A GB 1145800A
Authority
GB
United Kingdom
Prior art keywords
conduit
cavity
plug
engages
zone
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
GB26646/67A
Inventor
Gordon Eugene Gould
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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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
Priority claimed from US519066A external-priority patent/US3331100A/en
Priority to BE699563D priority Critical patent/BE699563A/xx
Priority to DE19671629749 priority patent/DE1629749A1/en
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Priority to GB26646/67A priority patent/GB1145800A/en
Priority to NL6708161A priority patent/NL6708161A/xx
Priority claimed from NL6708161A external-priority patent/NL6708161A/xx
Priority to FR110256A priority patent/FR1527351A/en
Publication of GB1145800A publication Critical patent/GB1145800A/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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/84—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders by heating or cooling the feeding screws
    • B29C48/85—Cooling
    • 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
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/51—Screws with internal flow passages, e.g. for molten material
    • B29C48/515—Screws with internal flow passages, e.g. for molten material for auxiliary fluids, e.g. foaming agents
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/84—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders by heating or cooling the feeding 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/84—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders by heating or cooling the feeding screws
    • B29C48/845—Heating
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/875—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones

Landscapes

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

Abstract

1,145,800. Screw extrusion machines. DOW CHEMICAL CO. 9 June, 1967, No. 26646/67. Heading B5A. [Also in Division B1] A screw 21 in an extrusion cyclinder 11 comprises a hollow cylindrical cavity 26 divided into heat exchange zones by a plug 33 which selectively engages and disengages a wall of the cavity to vary the respective sizes of the zones as required. Each zone 28, 29 is served by inlet and outlet conduits, those for the second zone 29 being coaxially disposed within those for the first zone 28. The plug 33 comprises a fixed part 34 attached to the outlet conduit 31 of the second zone, an expansible sealing ring 38 and a part 36 screwingly engaged on the conduit 31. In operation, to adjust the position of the plug, a packing assembly 50 is loosened and a conduit 42 is moved inwardly until a cam 44 thereon engages a rotating element 40 on the part 36 when the part 36 is rotated until the ring 38 is freed from the wall of the cavity and the plug is free to slide. The conduit 31 is then adjusted to a desired position and the conduit 42 is slid to engage elements 44 and 40 to rotate the part 36 and nip the ring 38 between surfaces 35, 37 when it is expanded and sealingly engages the wall once more. In a modification, Fig. 2-4 (not shown), the plug comprises a conduit (66) with an externally threaded end (67) to which is attached a shoulder part (68) and a cam part (69) which locates with a part (75) an expansible ring (71). A frusto-conical surface (76) on the part (75) engages arms (79) of a cavity engaging member (78). In operation, the conduit (66) is positioned in the screw internal cavity and a second conduit is placed therearound and engages in grooves (80) of the member (78). Rotation of conduit (66) causes arms (79) to ride up surface (78) and engage the cavity, which is then engaged by the sealing ring on continued rotation.
GB26646/67A 1966-01-06 1967-06-09 Improved extrusion apparatus Expired GB1145800A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE699563D BE699563A (en) 1966-01-06 1967-06-06
DE19671629749 DE1629749A1 (en) 1966-01-06 1967-06-07 Extruder for thermoplastic resins
GB26646/67A GB1145800A (en) 1966-01-06 1967-06-09 Improved extrusion apparatus
NL6708161A NL6708161A (en) 1966-01-06 1967-06-13
FR110256A FR1527351A (en) 1966-01-06 1967-06-14 Improvement provided to the extruder

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US519066A US3331100A (en) 1966-01-06 1966-01-06 Extrusion apparatus
DED0053276 1967-06-07
GB26646/67A GB1145800A (en) 1966-01-06 1967-06-09 Improved extrusion apparatus
NL6708161A NL6708161A (en) 1966-01-06 1967-06-13
FR110256A FR1527351A (en) 1966-01-06 1967-06-14 Improvement provided to the extruder

Publications (1)

Publication Number Publication Date
GB1145800A true GB1145800A (en) 1969-03-19

Family

ID=27511999

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26646/67A Expired GB1145800A (en) 1966-01-06 1967-06-09 Improved extrusion apparatus

Country Status (4)

Country Link
BE (1) BE699563A (en)
DE (1) DE1629749A1 (en)
FR (1) FR1527351A (en)
GB (1) GB1145800A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2166079A (en) * 1984-10-10 1986-04-30 Bp Chem Int Ltd Internally heated extruder screw for thermoplastic extrusion process
WO1992021496A1 (en) * 1991-06-07 1992-12-10 Farrel Corporation Rotor zone cooling apparatus for rotors in continuous mixers of plastic materials
US5273356A (en) * 1991-06-07 1993-12-28 Farrel Corporation Rotor zone cooling method and apparatus for rotors in continuous mixers of plastic materials
EP1419872A1 (en) * 2002-11-14 2004-05-19 Nexans Method for extruding a mixture

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4168943A (en) * 1975-03-20 1979-09-25 Caterpillar Tractor Co. Arrangement for feeding elastomeric particles into an extruder
CH612375A5 (en) * 1977-03-29 1979-07-31 Maillefer Sa

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2166079A (en) * 1984-10-10 1986-04-30 Bp Chem Int Ltd Internally heated extruder screw for thermoplastic extrusion process
WO1992021496A1 (en) * 1991-06-07 1992-12-10 Farrel Corporation Rotor zone cooling apparatus for rotors in continuous mixers of plastic materials
US5273356A (en) * 1991-06-07 1993-12-28 Farrel Corporation Rotor zone cooling method and apparatus for rotors in continuous mixers of plastic materials
EP1419872A1 (en) * 2002-11-14 2004-05-19 Nexans Method for extruding a mixture

Also Published As

Publication number Publication date
FR1527351A (en) 1968-05-31
DE1629749A1 (en) 1971-01-28
BE699563A (en) 1967-12-06

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