GB1259105A - - Google Patents

Info

Publication number
GB1259105A
GB1259105A GB992868A GB1259105DA GB1259105A GB 1259105 A GB1259105 A GB 1259105A GB 992868 A GB992868 A GB 992868A GB 1259105D A GB1259105D A GB 1259105DA GB 1259105 A GB1259105 A GB 1259105A
Authority
GB
United Kingdom
Prior art keywords
screw
zone
thread
plasticising
feb
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
GB992868A
Other languages
English (en)
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 filed Critical
Publication of GB1259105A publication Critical patent/GB1259105A/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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/64—Screws with two or more threads
    • 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)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
GB992868A 1968-02-29 1968-02-29 Expired GB1259105A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB992868 1968-02-29

Publications (1)

Publication Number Publication Date
GB1259105A true GB1259105A (enrdf_load_stackoverflow) 1972-01-05

Family

ID=9881371

Family Applications (1)

Application Number Title Priority Date Filing Date
GB992868A Expired GB1259105A (enrdf_load_stackoverflow) 1968-02-29 1968-02-29

Country Status (1)

Country Link
GB (1) GB1259105A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4384837A (en) 1980-07-08 1983-05-24 Oryza Oil & Fat Chemical Co., Ltd. Apparatus for pretreatment for extracting crude oil from rice bran
GB2166079A (en) * 1984-10-10 1986-04-30 Bp Chem Int Ltd Internally heated extruder screw for thermoplastic extrusion process
GB2221646A (en) * 1988-07-06 1990-02-14 Ultra Span Employing an auxiliary auger in a concrete extrusion/slide casting machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4384837A (en) 1980-07-08 1983-05-24 Oryza Oil & Fat Chemical Co., Ltd. Apparatus for pretreatment for extracting crude oil from rice bran
GB2166079A (en) * 1984-10-10 1986-04-30 Bp Chem Int Ltd Internally heated extruder screw for thermoplastic extrusion process
GB2221646A (en) * 1988-07-06 1990-02-14 Ultra Span Employing an auxiliary auger in a concrete extrusion/slide casting machine
GB2221646B (en) * 1988-07-06 1992-09-09 Ultra Span Auxiliary auger assembly for hollow core slab production

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees