GB1400142A - Extruder - Google Patents
ExtruderInfo
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
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.
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)
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)
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 |
-
1973
- 1973-02-16 DE DE2307616A patent/DE2307616B2/en not_active Ceased
-
1974
- 1974-02-11 IT IT48252/74A patent/IT1008215B/en active
- 1974-02-13 GB GB660374A patent/GB1400142A/en not_active Expired
- 1974-02-15 FR FR7405172A patent/FR2218184B1/fr not_active Expired
Cited By (4)
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 |
DE2307616A1 (en) | 1974-09-05 |
IT1008215B (en) | 1976-11-10 |
FR2218184A1 (en) | 1974-09-13 |
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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 |