GB1367769A - Extruder worms - Google Patents
Extruder wormsInfo
- Publication number
- GB1367769A GB1367769A GB5491371A GB5491371A GB1367769A GB 1367769 A GB1367769 A GB 1367769A GB 5491371 A GB5491371 A GB 5491371A GB 5491371 A GB5491371 A GB 5491371A GB 1367769 A GB1367769 A GB 1367769A
- Authority
- GB
- United Kingdom
- Prior art keywords
- thread
- worm
- zone
- shearing
- threads
- 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
- 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
- B29C48/56—Screws having grooves or cavities other than the thread or the channel
-
- 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
- B29C48/59—Screws characterised by details of the thread, i.e. the shape of a single thread of the material-feeding screw
- B29C48/605—Screws characterised by details of the thread, i.e. the shape of a single thread of the material-feeding screw the thread being discontinuous
-
- 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
1367769 Screw mixers K KOCH 26 Nov 1971 [28 Nov 1970] 54913/71 Heading B1C [Also in Division B5] An extruder worm, which is divided into a plurality of zones, has in at least one of the zones a worm structure comprising a thread proceeding from one or more starts upon which thread portions of an additional single or multi-start interrupted thread having a different pitch and smaller thread depth, are arranged. The structure may comprise a four start thread (9) (Fig. 2, not shown) having superposed thereon portions (10) of a two-start thread. In an alternative arrangement (Fig. 3, not shown) a two-start thread (6) has superposed thereon a multi-start thread (7). For extruding rubber mixes the zone A has the above defined worm structure, which effects plasticising and heating of the material, and the mix thereafter passes to a shearing zone B and a threaded zone C. The shearing zone contains worm threads 12 having therebetween shearing ridges 13 substantially parallel to the worm axis and having in a section a wedgelike profile, the apex of each ridge being at least 0.1 mm. and at most 30% of the worm threads 12 depth below the top of the worm threads.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702058642 DE2058642B2 (en) | 1970-11-28 | 1970-11-28 | EXTRUDER SCREW FOR THE PROCESSING OF PLASTIC, IN PARTICULAR RUBBER-LIKE MATERIALS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1367769A true GB1367769A (en) | 1974-09-25 |
Family
ID=5789380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5491371A Expired GB1367769A (en) | 1970-11-28 | 1971-11-26 | Extruder worms |
Country Status (11)
| Country | Link |
|---|---|
| JP (1) | JPS5443550B1 (en) |
| BE (1) | BE775834A (en) |
| CH (1) | CH528363A (en) |
| DE (1) | DE2058642B2 (en) |
| FI (1) | FI50392C (en) |
| FR (1) | FR2116098A5 (en) |
| GB (1) | GB1367769A (en) |
| IT (1) | IT941317B (en) |
| LU (1) | LU64348A1 (en) |
| NL (1) | NL7116249A (en) |
| SE (1) | SE364468B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103073779A (en) * | 2013-01-15 | 2013-05-01 | 东莞市开源塑化科技有限公司 | Manufacturing formula of dedicated vinyl acetate copolymer for transparent drinking water pipes, manufacturing technique and dedicated processing equipment |
| CN113752520A (en) * | 2021-09-01 | 2021-12-07 | 青岛科技大学 | Screw rod |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4202821C2 (en) * | 1992-01-31 | 1995-01-26 | S Rockstedt Gmbh Maschf | Multi-shaft continuously working mixing and kneading machine for plasticizable masses |
| DE4338795C1 (en) * | 1993-11-12 | 1995-06-14 | S Rockstedt Gmbh Maschf | Multi-shaft continuously operating mixing machine for plasticizable masses |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2896253A (en) * | 1957-01-17 | 1959-07-28 | Du Pont | Screw for handling thermoplastic resins |
| US2838794A (en) * | 1957-04-08 | 1958-06-17 | Du Pont | Extrusion apparatus |
| GB1266142A (en) * | 1968-03-21 | 1972-03-08 |
-
1970
- 1970-11-28 DE DE19702058642 patent/DE2058642B2/en not_active Ceased
-
1971
- 1971-11-23 SE SE14952/71A patent/SE364468B/xx unknown
- 1971-11-25 IT IT31606/71A patent/IT941317B/en active
- 1971-11-26 CH CH1722971A patent/CH528363A/en not_active IP Right Cessation
- 1971-11-26 FI FI713396A patent/FI50392C/en active
- 1971-11-26 BE BE775834A patent/BE775834A/en unknown
- 1971-11-26 FR FR7142441A patent/FR2116098A5/fr not_active Expired
- 1971-11-26 LU LU64348D patent/LU64348A1/xx unknown
- 1971-11-26 NL NL7116249A patent/NL7116249A/xx not_active Application Discontinuation
- 1971-11-26 GB GB5491371A patent/GB1367769A/en not_active Expired
- 1971-11-29 JP JP9622471A patent/JPS5443550B1/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103073779A (en) * | 2013-01-15 | 2013-05-01 | 东莞市开源塑化科技有限公司 | Manufacturing formula of dedicated vinyl acetate copolymer for transparent drinking water pipes, manufacturing technique and dedicated processing equipment |
| CN113752520A (en) * | 2021-09-01 | 2021-12-07 | 青岛科技大学 | Screw rod |
Also Published As
| Publication number | Publication date |
|---|---|
| FI50392B (en) | 1975-12-01 |
| LU64348A1 (en) | 1972-06-15 |
| FR2116098A5 (en) | 1972-07-07 |
| CH528363A (en) | 1972-09-30 |
| DE2058642B2 (en) | 1972-05-25 |
| FI50392C (en) | 1976-03-10 |
| DE2058642A1 (en) | 1972-05-25 |
| IT941317B (en) | 1973-03-01 |
| JPS5443550B1 (en) | 1979-12-20 |
| SE364468B (en) | 1974-02-25 |
| NL7116249A (en) | 1972-05-30 |
| BE775834A (en) | 1972-03-16 |
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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 |