GB733585A - Screw press for mixing and extruding plastic materials - Google Patents
Screw press for mixing and extruding plastic materialsInfo
- Publication number
- GB733585A GB733585A GB21200/53A GB2120053A GB733585A GB 733585 A GB733585 A GB 733585A GB 21200/53 A GB21200/53 A GB 21200/53A GB 2120053 A GB2120053 A GB 2120053A GB 733585 A GB733585 A GB 733585A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screws
- mixing
- screw
- screw press
- diameter
- 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
- 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
- B30B11/245—Extrusion presses; Dies therefor using screws or worms using two or more screws working in different chambers
-
- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
- B29C48/38—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in the same barrel
-
- 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
- B29C48/40—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 using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
- B29C48/41—Intermeshing counter-rotating screws
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
733,585. Mixing-appliances. PASQUETTI, C. July 30, 1953 [Oct. 2, 1952], No. 21200/53. Class 86. [Also in Group V] A screw press for plastic material such as thermoplastic resins and compositions comprises mixing-chambers 3a, 3b, 3c, 3d communicating with each other via openings 6a, 6b, 6c, and housing pairs of side-by-side intermeshing screws 4a, 4b, 4c, 4d driven by mechanisms, shown diagrammatically at 9a, 9b, 9c, 9d at different speeds in each chamber, either by independent motors with variable transmission or by one motor and gear transmission. The material is fed in via hopper 5 and in opposite directions through alternate chambers to the extrusion die 7. The screws may be either constant in diameter and gradually reduced in pitch, with consequent variation in the number of threads, or each pair of screws may be of constant screw pitch and number of threads smaller than those of the preceding pair of screws. Each screw may alternatively be subdivided into several sections decreasing in diameter. A hole 11 is formed in bushing 10 supporting screws 4 to discharge material reaching the clearance between parts 8 and 10.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT317570X | 1952-10-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB733585A true GB733585A (en) | 1955-07-13 |
Family
ID=11234320
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB21200/53A Expired GB733585A (en) | 1952-10-02 | 1953-07-30 | Screw press for mixing and extruding plastic materials |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH317570A (en) |
FR (1) | FR1082192A (en) |
GB (1) | GB733585A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1063075A2 (en) * | 1999-06-11 | 2000-12-27 | COSTRUZIONI MECCANICHE LUIGI BANDERA S.p.A. | Compact extruder with multiple parallel screws |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
LU34234A1 (en) * | 1955-08-23 | 1900-01-01 | ||
DE1168631B (en) * | 1958-08-29 | 1964-04-23 | Basf Ag | Device for processing thermoplastic plastics on screw presses and kneaders |
-
1953
- 1953-07-27 CH CH317570D patent/CH317570A/en unknown
- 1953-07-30 GB GB21200/53A patent/GB733585A/en not_active Expired
- 1953-08-07 FR FR1082192D patent/FR1082192A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1063075A2 (en) * | 1999-06-11 | 2000-12-27 | COSTRUZIONI MECCANICHE LUIGI BANDERA S.p.A. | Compact extruder with multiple parallel screws |
EP1063075A3 (en) * | 1999-06-11 | 2004-07-28 | COSTRUZIONI MECCANICHE LUIGI BANDERA S.p.A. | Compact extruder with multiple parallel screws |
Also Published As
Publication number | Publication date |
---|---|
CH317570A (en) | 1956-11-30 |
FR1082192A (en) | 1954-12-27 |
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