GB721413A - Improvements in an extrusion press for thermoplastic material - Google Patents
Improvements in an extrusion press for thermoplastic materialInfo
- Publication number
- GB721413A GB721413A GB24504/52A GB2450452A GB721413A GB 721413 A GB721413 A GB 721413A GB 24504/52 A GB24504/52 A GB 24504/52A GB 2450452 A GB2450452 A GB 2450452A GB 721413 A GB721413 A GB 721413A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screw
- wall
- chamber
- press
- thermoplastic material
- 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
- B29C48/03—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
-
- 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
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
721,413. Extrusion machines for thermoplastics. NAAMLOOZE VENNOOTSCHAP ONDERZOEKINGSINSTITUUT RESEARCH. Sept. 30, 1952 [Dec. 21, 1951], No. 24504/52. Class 87 (2). An extrusion press having a horizontal screw 4 and a filling chamber 1 for feeding granular material to the screw, the chamber being connected to the screw housing 3, is characterized in that the wall 6 of the said chamber is shaped that at the place where the wall is near the downwardlymoving part of the screw the wall makes an angle, a, directed towards the filling opening, of at least 90 degrees with the tangential plane to the rib of the screw; and the wall 6 surrounds the said part of the screw, at least over its greatest part, at a distance which is not greater than the smallest dimension of the grains of thermoplastic material to be treated. The press may be adapted from an existing press by securing inserts (shown shaded' in Figs. 2 and 3) to the usual filling chamber. The angle alpha may be 120-140 degrees.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL721413X | 1951-12-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB721413A true GB721413A (en) | 1955-01-05 |
Family
ID=19817182
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB24504/52A Expired GB721413A (en) | 1951-12-21 | 1952-09-30 | Improvements in an extrusion press for thermoplastic material |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB721413A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3534748A1 (en) * | 1985-09-28 | 1987-04-02 | Krupp Gmbh | Screw extruder |
EP0099431B1 (en) * | 1982-07-20 | 1987-10-28 | Amoco Corporation | Process for production of maleic anhydride |
WO2009070031A1 (en) | 2007-11-29 | 2009-06-04 | Eltek Valere As | Control system and method for controlling a bridgeless boost converter |
-
1952
- 1952-09-30 GB GB24504/52A patent/GB721413A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0099431B1 (en) * | 1982-07-20 | 1987-10-28 | Amoco Corporation | Process for production of maleic anhydride |
DE3534748A1 (en) * | 1985-09-28 | 1987-04-02 | Krupp Gmbh | Screw extruder |
WO2009070031A1 (en) | 2007-11-29 | 2009-06-04 | Eltek Valere As | Control system and method for controlling a bridgeless boost converter |
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