GB1166167A - Compression Molding Apparatus - Google Patents
Compression Molding ApparatusInfo
- Publication number
- GB1166167A GB1166167A GB4448967A GB4448967A GB1166167A GB 1166167 A GB1166167 A GB 1166167A GB 4448967 A GB4448967 A GB 4448967A GB 4448967 A GB4448967 A GB 4448967A GB 1166167 A GB1166167 A GB 1166167A
- Authority
- GB
- United Kingdom
- Prior art keywords
- well
- plunger
- biased
- mould
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
Abstract
1,166,167. Compression moulding. E. I. VALYI. 29 Sept., 1967 [27 Feb., 1967], No. 44489/67. Heading B5A. A compression mould has a mould cavity 12, Fig. 2, an overflow well 21, in the female member 10, a plunger 23 in said well biased to substantially close said well by means which yields in response to moulding pressure in excess of a predetermined value to allow excess plastics to enter the well and to compensate for shrinkage. The plunger may be biased by a spring or fluid pressure. In another example, in which an article of non-uniform thickness is produced, Fig. 3, an additional chamber 37 in the female member communicates with the cavity and contains a plunger 37 biased, e.g. by a spring or by fluid pressure, to exert a pressure on the material so as to compensate for shrinkage. The material supplied to the mould may come from an extruder directly or indirectly and be measured as described in Specification 1,166,168.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US61886267A | 1967-02-27 | 1967-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1166167A true GB1166167A (en) | 1969-10-08 |
Family
ID=24479431
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2697068A Expired GB1166168A (en) | 1967-02-27 | 1967-09-29 | Apparatus for Measuring a Quantity of Plastics Material |
| GB4448967A Expired GB1166167A (en) | 1967-02-27 | 1967-09-29 | Compression Molding Apparatus |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2697068A Expired GB1166168A (en) | 1967-02-27 | 1967-09-29 | Apparatus for Measuring a Quantity of Plastics Material |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE704858A (en) |
| CH (1) | CH468880A (en) |
| FR (1) | FR1549702A (en) |
| GB (2) | GB1166168A (en) |
-
1967
- 1967-09-29 GB GB2697068A patent/GB1166168A/en not_active Expired
- 1967-09-29 GB GB4448967A patent/GB1166167A/en not_active Expired
- 1967-10-09 BE BE704858D patent/BE704858A/xx unknown
- 1967-10-20 CH CH1470167A patent/CH468880A/en unknown
- 1967-12-13 FR FR1549702D patent/FR1549702A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1549702A (en) | 1968-12-13 |
| GB1166168A (en) | 1969-10-08 |
| BE704858A (en) | 1968-02-15 |
| CH468880A (en) | 1969-02-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |