GB953310A - Improvements relating to screw extruders - Google Patents

Improvements relating to screw extruders

Info

Publication number
GB953310A
GB953310A GB5718/63A GB571863A GB953310A GB 953310 A GB953310 A GB 953310A GB 5718/63 A GB5718/63 A GB 5718/63A GB 571863 A GB571863 A GB 571863A GB 953310 A GB953310 A GB 953310A
Authority
GB
United Kingdom
Prior art keywords
screw
zone
diameter
length
casing
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
GB5718/63A
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
Application filed by Barmag Barmer Maschinenfabrik AG filed Critical Barmag Barmer Maschinenfabrik AG
Publication of GB953310A publication Critical patent/GB953310A/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
    • B30B11/248—Means preventing the material from turning with the screw or returning towards the feed hopper
    • 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
    • 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
    • B29C48/501—Extruder feed section
    • 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
    • B29C48/68—Barrels or cylinders
    • 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

Abstract

953,310. Extrusion machines. BARMER MASCHINENFABRIK A.G. Feb. 12, 1963 [Dec. 20, 1962], No. 5718/63. Heading B5A. A screw extruder, particularly for processing thermoplastic scrap materials of low bulk density, comprises a heatable casing having an inlet 5, a rotatable screw 1 having a thread 7 decreasing in depth in the direction of feed, the major diameter of the screw in the length thereof contained in the feed zone 2 and an adjacent inlet zone 3 being reduced to not more than one third of the initial diameter, the reduction in the major diameter per thread turn in the zone 2 being at least equal to half the length of the screw pitch, and the major screw diameter being approximately constant throughout a melt zone 4. The screw 1 has a core of constant diameter throughout its length. The casing in the region of the inlet zone 2 has a ridged friction generating surface 8. In the feed zone 2 the edge of the thread 7 has notches 12 and cooperates with knives 14 on the casing wall to disintegrate the inflowing material.
GB5718/63A 1962-12-20 1963-02-12 Improvements relating to screw extruders Expired GB953310A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB0070077 1962-12-20

Publications (1)

Publication Number Publication Date
GB953310A true GB953310A (en) 1964-03-25

Family

ID=6976529

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5718/63A Expired GB953310A (en) 1962-12-20 1963-02-12 Improvements relating to screw extruders

Country Status (3)

Country Link
BE (1) BE640831A (en)
GB (1) GB953310A (en)
NL (1) NL301127A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3932086A (en) * 1973-11-13 1976-01-13 Tadashi Kasamatsu Extruder
DE3010825A1 (en) * 1980-03-21 1981-10-08 Plastik-Maschinenbau Gmbh & Co Kg Entwicklungsgesellschaft, 5489 Kelberg PREPARATION MACHINE FOR DISPOSED THERMOPLASTIC PLASTIC FILMS AND THE LIKE
GB2226273A (en) * 1988-12-10 1990-06-27 Berstorff Gmbh Masch Hermann An extrusion device for incorporating additives into a thermoplastics material melt
CN110126236A (en) * 2019-06-14 2019-08-16 深圳市畅形增材科技有限公司 Diameter progressive screw and the thermoplastic granulates material molten extrusion device for using diameter progressive screw

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3954366A (en) * 1975-01-06 1976-05-04 Fields Reuben T Two-stage single screw extrusion apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3932086A (en) * 1973-11-13 1976-01-13 Tadashi Kasamatsu Extruder
DE3010825A1 (en) * 1980-03-21 1981-10-08 Plastik-Maschinenbau Gmbh & Co Kg Entwicklungsgesellschaft, 5489 Kelberg PREPARATION MACHINE FOR DISPOSED THERMOPLASTIC PLASTIC FILMS AND THE LIKE
GB2226273A (en) * 1988-12-10 1990-06-27 Berstorff Gmbh Masch Hermann An extrusion device for incorporating additives into a thermoplastics material melt
CN110126236A (en) * 2019-06-14 2019-08-16 深圳市畅形增材科技有限公司 Diameter progressive screw and the thermoplastic granulates material molten extrusion device for using diameter progressive screw

Also Published As

Publication number Publication date
BE640831A (en) 1964-04-01
NL301127A (en) 1900-01-01

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