GB606879A - Improvements in or relating to plasticising apparatus for the moulding of plastics - Google Patents
Improvements in or relating to plasticising apparatus for the moulding of plasticsInfo
- Publication number
- GB606879A GB606879A GB1820643A GB1820643A GB606879A GB 606879 A GB606879 A GB 606879A GB 1820643 A GB1820643 A GB 1820643A GB 1820643 A GB1820643 A GB 1820643A GB 606879 A GB606879 A GB 606879A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrode
- live
- moulding
- electrodes
- carrier
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/74—Heating or cooling of the injection unit
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
606,879. Dielectric heating. COMMUNICATIONS PATENTS, Ltd., and YOULE, F. Nov. 3, 1943, No. 18206. [Class 39(iii)] [Also in Group V] To subject plastic material to high frequency heating prior to moulding, a plunger 3 forces the material between an inner torpedo shaped live electrode 16 and the inside surface of a metal tube 4 which acts as the earthed electrode. The material passes through holes 19 in a mica or ceramic carrier 18 and then between a live electrode 15 and the inner surface of a nozzle 10, which acts as the earthed electrode. The electrodes 15, 10 may be closer together at the nozzle to obtain maximum plasticity prior to moulding. The carrier supports a rod 17 to which are removably attached the live electrodes. The rod 17 is connected to a source of high frequency alternating electric current of at least 30 Mc/s. The tube 4 is also electrically connected to the source and these connections are made by means of a cable of the low loss concentric type. The energization of the electrode system may be timed with the movement of the plunger or may be continuous. Two or more parts of the electrode system may be supplied with different voltages. Additional heating means may be used. A mica or ceramic layer may be moulded around the live electrodes or it may be formed homogeneous with the carrier. Specifications 517,798, 572,425 and U.S.A. Specification 2,179,261 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1820643A GB606879A (en) | 1943-11-03 | 1943-11-03 | Improvements in or relating to plasticising apparatus for the moulding of plastics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1820643A GB606879A (en) | 1943-11-03 | 1943-11-03 | Improvements in or relating to plasticising apparatus for the moulding of plastics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB606879A true GB606879A (en) | 1948-08-23 |
Family
ID=10108473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1820643A Expired GB606879A (en) | 1943-11-03 | 1943-11-03 | Improvements in or relating to plasticising apparatus for the moulding of plastics |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB606879A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3010155A (en) * | 1959-02-05 | 1961-11-28 | Bopp Decker Plastics Inc | Internally heated nozzle and molding method |
| US3077636A (en) * | 1959-10-06 | 1963-02-19 | Phillips Petroleum Co | Injection molding of plastic materials |
| DE1198536B (en) * | 1954-09-01 | 1965-08-12 | Lester Engineering Company | Injection cylinder for injection molding machines for processing thermoplastic materials |
| US3281898A (en) * | 1963-10-28 | 1966-11-01 | Farrel Corp | Preset nozzle retainer for an injection molding machine |
| EP0595189A1 (en) * | 1992-10-29 | 1994-05-04 | FRIEDRICH THEYSOHN GmbH | Method of plastifying plastic material |
-
1943
- 1943-11-03 GB GB1820643A patent/GB606879A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1198536B (en) * | 1954-09-01 | 1965-08-12 | Lester Engineering Company | Injection cylinder for injection molding machines for processing thermoplastic materials |
| US3010155A (en) * | 1959-02-05 | 1961-11-28 | Bopp Decker Plastics Inc | Internally heated nozzle and molding method |
| US3077636A (en) * | 1959-10-06 | 1963-02-19 | Phillips Petroleum Co | Injection molding of plastic materials |
| US3281898A (en) * | 1963-10-28 | 1966-11-01 | Farrel Corp | Preset nozzle retainer for an injection molding machine |
| EP0595189A1 (en) * | 1992-10-29 | 1994-05-04 | FRIEDRICH THEYSOHN GmbH | Method of plastifying plastic material |
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