GB1400142A - Extruder - Google Patents

Extruder

Info

Publication number
GB1400142A
GB1400142A GB660374A GB660374A GB1400142A GB 1400142 A GB1400142 A GB 1400142A GB 660374 A GB660374 A GB 660374A GB 660374 A GB660374 A GB 660374A GB 1400142 A GB1400142 A GB 1400142A
Authority
GB
United Kingdom
Prior art keywords
screw
groove
flow
elements
resisting
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
GB660374A
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.)
KraussMaffei Extrusion GmbH
Original Assignee
Hermann Berstorff Maschinenbau GmbH
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 Hermann Berstorff Maschinenbau GmbH filed Critical Hermann Berstorff Maschinenbau GmbH
Publication of GB1400142A publication Critical patent/GB1400142A/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
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
    • B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
    • B29B7/421—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix with screw and additionally other mixing elements on the same shaft, e.g. paddles, discs, bearings, rotor blades of the Banbury type
    • 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

Abstract

1400142 Screw means HERMANN BERSTORFF MASCHINENBAU GmbH 13 Feb 1974 [16 Feb 1973] 6603/74 Heading BIC [Also in Division B5] A screw extender for homogenising and mixing thermoplastics and rubber has in the grooves of the screw flow-resisting elements as at 6, 7, 8, 9 and openings in the lands of the screw as at 2a, 3a, 4a disposed so that the trailing edge of each opening lies in the normal to the groove which passes through the centre of an adjacent flow-resisting element, the cross-sectional area of the opening being equal to that part of the area of the groove which is obstructed by the screw. As shown, the effect is to repeatedly subdivide the flow in the groove into partial flows round and over the obstructions and through the openings, the partial flows being combined in a different combination. The flow-resisting elements are cylindrical or cubical or rhomboidel in cross-section; in the latter cases two edges are disposed along the groove and are chamfered. The elements may be pre-shrunk and then engaged in holes to be an interference fit.
GB660374A 1973-02-16 1974-02-13 Extruder Expired GB1400142A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2307616A DE2307616B2 (en) 1973-02-16 1973-02-16 Single or multi-start extruder screw for processing thermoplastics or rubber-like materials

Publications (1)

Publication Number Publication Date
GB1400142A true GB1400142A (en) 1975-07-16

Family

ID=5872078

Family Applications (1)

Application Number Title Priority Date Filing Date
GB660374A Expired GB1400142A (en) 1973-02-16 1974-02-13 Extruder

Country Status (4)

Country Link
DE (1) DE2307616B2 (en)
FR (1) FR2218184B1 (en)
GB (1) GB1400142A (en)
IT (1) IT1008215B (en)

Cited By (3)

* 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
WO2003084846A1 (en) * 2002-04-10 2003-10-16 Bühler AG Mixer with a smooth throughput
IT201600129563A1 (en) * 2016-12-21 2018-06-21 M R S Italia S R L MIXING DEVICE FOR PLASTICIZING SCREWS

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3132429A1 (en) * 1981-08-17 1983-02-24 Krauss-Maffei AG, 8000 München Screw for processing plastics, in particular for an injection-moulding machine
US5032073A (en) * 1989-10-06 1991-07-16 Thermax Wire Corp. Thin walled high velocity propagation of foamed thermoplastic resins
ES2880393T3 (en) * 2017-10-17 2021-11-24 Buss Ag Asymmetric double wing worm shaft for a mixing and kneading machine

Cited By (4)

* 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
WO2003084846A1 (en) * 2002-04-10 2003-10-16 Bühler AG Mixer with a smooth throughput
US7255223B2 (en) 2002-04-10 2007-08-14 Buehler Ag Mixture with a smooth throughput
IT201600129563A1 (en) * 2016-12-21 2018-06-21 M R S Italia S R L MIXING DEVICE FOR PLASTICIZING SCREWS

Also Published As

Publication number Publication date
FR2218184B1 (en) 1977-09-09
DE2307616B2 (en) 1975-06-05
FR2218184A1 (en) 1974-09-13
IT1008215B (en) 1976-11-10
DE2307616A1 (en) 1974-09-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee