GB1489462A - Process for moulding thin-walled products - Google Patents
Process for moulding thin-walled productsInfo
- Publication number
- GB1489462A GB1489462A GB1955/75A GB195575A GB1489462A GB 1489462 A GB1489462 A GB 1489462A GB 1955/75 A GB1955/75 A GB 1955/75A GB 195575 A GB195575 A GB 195575A GB 1489462 A GB1489462 A GB 1489462A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mould
- hopper
- cavity
- mould cavity
- passage
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
- B29C44/44—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form
- B29C44/445—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form in the form of expandable granules, particles or beads
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
Abstract
1489462 Moulding thin-walled articles R P DUCRUEZ 16 Jan 1975 [18 Jan 1974] 1955/75 Heading B5A In a process for forming thin-walled products, e.g. beakers and egg containers, in a mould cavity 6 which communicates with an annular passage 24 situated where the mould parts 13, 14 meet, a vacuum is applied to the mould cavity so as to draw granules of a thermoplastic resin from a hopper 1 through the passage 24 and into the mould cavity which is then sealed off and the mould is first heated and then cooled. After filling the cavity the mould parts may be pressed together to compress the moulding material. Excess granules remaining in the passage 24 may be returned to the hopper 1 through a duct 9 by means of an air nozzle 11. Vacuum is applied through perforated plugs 22, 22a which can also be used to supply compressed air to eject the moulded articles. Alternatively ejection may be effected by movement of the plugs 22, 22a to the right. A valve structure 20 is provided for sealing off the mould cavity 6. An agitator 3 may be connected to the hopper 1.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7401832A FR2258256B1 (en) | 1974-01-18 | 1974-01-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1489462A true GB1489462A (en) | 1977-10-19 |
Family
ID=9133695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1955/75A Expired GB1489462A (en) | 1974-01-18 | 1975-01-16 | Process for moulding thin-walled products |
Country Status (17)
| Country | Link |
|---|---|
| JP (1) | JPS50107066A (en) |
| AR (1) | AR204563A1 (en) |
| AT (1) | AT351244B (en) |
| BE (1) | BE824481A (en) |
| BR (1) | BR7500307A (en) |
| CH (1) | CH593780A5 (en) |
| DE (1) | DE2501627A1 (en) |
| ES (1) | ES433769A1 (en) |
| FI (1) | FI750110A (en) |
| FR (1) | FR2258256B1 (en) |
| GB (1) | GB1489462A (en) |
| IL (1) | IL46437A0 (en) |
| IT (1) | IT1028400B (en) |
| NL (1) | NL7500486A (en) |
| SE (1) | SE395128B (en) |
| SU (1) | SU635862A3 (en) |
| ZA (1) | ZA75226B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2434020A1 (en) * | 1978-08-25 | 1980-03-21 | Bischof & Klein | FEEDING DEVICE FOR AN EXTRUDER |
| US4544345A (en) * | 1981-11-10 | 1985-10-01 | Eugen Buhler | Device for the production of molded articles from a pourable substance |
| EP1149676A1 (en) * | 1999-10-12 | 2001-10-31 | Namba Press Works Co., Ltd. | Filled article |
-
1974
- 1974-01-18 FR FR7401832A patent/FR2258256B1/fr not_active Expired
-
1975
- 1975-01-01 AR AR257303A patent/AR204563A1/en active
- 1975-01-13 ZA ZA00750226A patent/ZA75226B/en unknown
- 1975-01-13 SE SE7500309A patent/SE395128B/en unknown
- 1975-01-13 CH CH34275A patent/CH593780A5/xx not_active IP Right Cessation
- 1975-01-14 ES ES433769A patent/ES433769A1/en not_active Expired
- 1975-01-15 NL NL7500486A patent/NL7500486A/en unknown
- 1975-01-15 IL IL46437A patent/IL46437A0/en unknown
- 1975-01-16 BR BR307/75A patent/BR7500307A/en unknown
- 1975-01-16 IT IT19315/75A patent/IT1028400B/en active
- 1975-01-16 GB GB1955/75A patent/GB1489462A/en not_active Expired
- 1975-01-16 DE DE19752501627 patent/DE2501627A1/en active Pending
- 1975-01-17 AT AT34975A patent/AT351244B/en not_active IP Right Cessation
- 1975-01-17 FI FI750110A patent/FI750110A/fi not_active Application Discontinuation
- 1975-01-17 SU SU752111242A patent/SU635862A3/en active
- 1975-01-17 BE BE152453A patent/BE824481A/en unknown
- 1975-01-18 JP JP50008301A patent/JPS50107066A/ja active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2434020A1 (en) * | 1978-08-25 | 1980-03-21 | Bischof & Klein | FEEDING DEVICE FOR AN EXTRUDER |
| US4544345A (en) * | 1981-11-10 | 1985-10-01 | Eugen Buhler | Device for the production of molded articles from a pourable substance |
| EP1149676A1 (en) * | 1999-10-12 | 2001-10-31 | Namba Press Works Co., Ltd. | Filled article |
| EP1149676A4 (en) * | 1999-10-12 | 2004-08-25 | Namba Press Kogyo Kk | Filled article |
| US6946043B1 (en) | 1999-10-12 | 2005-09-20 | Namba Press Works Co., Ltd. | Filled article |
Also Published As
| Publication number | Publication date |
|---|---|
| AT351244B (en) | 1979-07-10 |
| BR7500307A (en) | 1975-11-04 |
| BE824481A (en) | 1975-07-17 |
| IL46437A0 (en) | 1975-04-25 |
| FR2258256A1 (en) | 1975-08-18 |
| FI750110A (en) | 1975-07-19 |
| IT1028400B (en) | 1979-01-30 |
| ZA75226B (en) | 1976-01-28 |
| AR204563A1 (en) | 1976-02-12 |
| NL7500486A (en) | 1975-07-22 |
| JPS50107066A (en) | 1975-08-23 |
| SE7500309L (en) | 1975-07-21 |
| CH593780A5 (en) | 1977-12-15 |
| SU635862A3 (en) | 1978-11-30 |
| ES433769A1 (en) | 1977-02-16 |
| AU7733175A (en) | 1976-07-15 |
| DE2501627A1 (en) | 1975-07-24 |
| SE395128B (en) | 1977-08-01 |
| ATA34975A (en) | 1978-12-15 |
| FR2258256B1 (en) | 1978-10-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |