GB1335768A - Screw extruder - Google Patents

Screw extruder

Info

Publication number
GB1335768A
GB1335768A GB2941471A GB2941471A GB1335768A GB 1335768 A GB1335768 A GB 1335768A GB 2941471 A GB2941471 A GB 2941471A GB 2941471 A GB2941471 A GB 2941471A GB 1335768 A GB1335768 A GB 1335768A
Authority
GB
United Kingdom
Prior art keywords
projections
diameter
screw
june
adjacent
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
GB2941471A
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.)
Oerlikon Barmag AG
Original Assignee
Barmag Barmer Maschinenfabrik AG
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 DE19702030756 external-priority patent/DE2030756C2/en
Application filed by Barmag Barmer Maschinenfabrik AG filed Critical Barmag Barmer Maschinenfabrik AG
Publication of GB1335768A publication Critical patent/GB1335768A/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
    • B29C48/565—Screws having projections other than the thread, e.g. pins
    • 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)

Abstract

1335768 Mixing apparatus BARMAG BARMER MASCHINENFABRIK AG 23 June 1971 [23 June 1970] 29414/71 Heading B1C [Also in Division B5] Apparatus for homogenizing, thermally equalising and extruding thermoplastics comprises a single screw 4 having an inflighted zone adjacent the exit which has a length of at least twice the screw major diameter and is provided with projections 5, 6 of at least two different heights, the ratio of projection diameter to height being 0.25-2. The projections may be arranged irregularly or in herring- bone pattern (see Fig. 2, not shown) and may be polished and have rounded tops. They may all have substantially the same diameter and be spaced a distance of 1.5 times the diameter. Projections may extend into the adjacent flighted portion of the screw.
GB2941471A 1970-06-23 1971-06-23 Screw extruder Expired GB1335768A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702030756 DE2030756C2 (en) 1970-06-23 Screw extruder for the continuous processing of thermoplastics

Publications (1)

Publication Number Publication Date
GB1335768A true GB1335768A (en) 1973-10-31

Family

ID=5774627

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2941471A Expired GB1335768A (en) 1970-06-23 1971-06-23 Screw extruder

Country Status (9)

Country Link
JP (1) JPS5341179B1 (en)
AT (1) AT321562B (en)
CH (1) CH522495A (en)
FR (1) FR2099809A5 (en)
GB (1) GB1335768A (en)
LU (1) LU63383A1 (en)
NL (1) NL7108574A (en)
RO (1) RO84935B (en)
ZA (1) ZA713746B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2140314A (en) * 1983-03-14 1984-11-28 Chisso Corp Process and apparatus for producing organic filler-blended resin compositions
WO2020180862A1 (en) * 2019-03-04 2020-09-10 Integrated Composite Products, Inc. Screw designs for use when molding products that include sheer sensitive materials

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2140314A (en) * 1983-03-14 1984-11-28 Chisso Corp Process and apparatus for producing organic filler-blended resin compositions
WO2020180862A1 (en) * 2019-03-04 2020-09-10 Integrated Composite Products, Inc. Screw designs for use when molding products that include sheer sensitive materials

Also Published As

Publication number Publication date
DE2030756B2 (en) 1971-12-09
ZA713746B (en) 1972-04-26
FR2099809A5 (en) 1972-03-17
RO84935B (en) 1984-11-30
CH522495A (en) 1972-06-30
LU63383A1 (en) 1971-09-21
RO84935A (en) 1984-10-31
JPS5341179B1 (en) 1978-10-31
NL7108574A (en) 1971-12-27
DE2030756A1 (en) 1971-12-09
AT321562B (en) 1975-04-10

Similar Documents

Publication Publication Date Title
GB1382056A (en) Moulding apparatus
GB1414799A (en) Apparatus and method for interrupting textile yarn forming operations
CA1001394A (en) Commingling jet and process for multifilament yarn
CA958199A (en) Apparatus for texturing or drawing and texturing synthetic yarns
GB1335768A (en) Screw extruder
GB1273402A (en) Improved method of and apparatus for mixing polymers
GB1299955A (en) Extruder screw
GB1412231A (en) Process for the continuous dyeing of threads and slivers of dry spun acrylonitrile polymers
CA932918A (en) Synthetic yarns and fibres
FR2057816A5 (en) Extrusion of incompatible mixed polymers - into filaments and sheet
GB1314465A (en) Extrusion moulding machines
CA935260A (en) Process for the continuous dyeing of synthetic fibre materials
CA940657A (en) Process for the continuous dyeing of synthetic fibre materials
JPS5274024A (en) Production of bulked yarn
AU1640370A (en) New acrylic multi-colored textile products and process for producing the same
CA935953A (en) Process for the continuous dyeing of synthetic fibre materials
CA932329A (en) Process for the continuous dyeing of synthetic fibre materials
CA934515A (en) Merging extruded asbestos filaments while coagulating and forming yarn
CA955024A (en) Synthetic fibers and methods for producing the same
AU1640170A (en) Acrylic multi-colored textile products having tone-on-tone effect and process for producing the same
AU456275B2 (en) Process for dyeing protein fibres and forming polymers therein
CA935952A (en) Process for the continuous dyeing of synthetic fibre materials
CA936988A (en) Synthetic linear polyester fiber having improved antistatic properties and process for the preparation thereof
CA946235A (en) Apparatus for handling undrawn spun yarn in synthetic yarn producing mill
CA964015A (en) Synthetic fibres and yarns

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee