GB902099A - Improvements relating to extrusion - Google Patents
Improvements relating to extrusionInfo
- Publication number
- GB902099A GB902099A GB36672/59A GB3667259A GB902099A GB 902099 A GB902099 A GB 902099A GB 36672/59 A GB36672/59 A GB 36672/59A GB 3667259 A GB3667259 A GB 3667259A GB 902099 A GB902099 A GB 902099A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plunger
- screw
- orifice
- length
- pressure
- 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
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92514—Pressure
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92571—Position, e.g. linear or angular
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92809—Particular value claimed
-
- 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
902,099. Extrusion machines. MONSANTO CHEMICALS Ltd. Sept. 20, 1960 [Oct. 28, 1959], No. 36672/59. Class 87(2). The back-pressure in a machine for extruding thermoplastic synthetic resins can be varied by changing the length of an orifice of annular cross-section situated between the screw and the die, the cross-section being uniform along the length. In the machine illustrated, resin fed from the screw 3 to the die 5 has to pass through the orifice 9 formed between that part of the passage 4 through the manifold 1 which is of reduced diameter and that part of a plunger 7 which is of increased diameter. The length of the orifice 9 is altered by screwing the plunger 7 in or out by means of the hand-wheel 11 so as to adjust the back-pressure to the minimum value which will achieve the desired degree of refining or nixing of the resin, thus minimising the power required for the extrusion operation. The plunger need not be at right angles to the screw and may, for example, be placed in line with it, or it can be integral with the end of the screw itself, The movement of the plunger may be controlled by the back-pressure through a suitable servo-mechanism. The plunger may be capable of rotation relative to the mainifold at speeds of up to 5,000 r.p.m.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB36672/59A GB902099A (en) | 1959-10-28 | 1959-10-28 | Improvements relating to extrusion |
FR842025A FR1271922A (en) | 1959-10-28 | 1960-10-24 | Improvements to extruders or extruders |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB36672/59A GB902099A (en) | 1959-10-28 | 1959-10-28 | Improvements relating to extrusion |
Publications (1)
Publication Number | Publication Date |
---|---|
GB902099A true GB902099A (en) | 1962-07-25 |
Family
ID=37440717
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB36672/59A Expired GB902099A (en) | 1959-10-28 | 1959-10-28 | Improvements relating to extrusion |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR1271922A (en) |
GB (1) | GB902099A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4081231A (en) * | 1976-12-23 | 1978-03-28 | Mobil Oil Corporation | Flow distribution valve for dual thermoplastic tube extrusion |
CA1090678A (en) * | 1977-05-27 | 1980-12-02 | Fox J. Herrington | Flow distribution valve |
NL7810687A (en) * | 1977-11-07 | 1979-05-09 | Mobil Oil Corp | FLOW CONTROL VALVE FOR PLASTIC EXTRUSION. |
-
1959
- 1959-10-28 GB GB36672/59A patent/GB902099A/en not_active Expired
-
1960
- 1960-10-24 FR FR842025A patent/FR1271922A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR1271922A (en) | 1961-09-15 |
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