AU3438684A - Verfahren zum herstellen von kunststoffteilen - Google Patents
Verfahren zum herstellen von kunststoffteilenInfo
- Publication number
- AU3438684A AU3438684A AU34386/84A AU3438684A AU3438684A AU 3438684 A AU3438684 A AU 3438684A AU 34386/84 A AU34386/84 A AU 34386/84A AU 3438684 A AU3438684 A AU 3438684A AU 3438684 A AU3438684 A AU 3438684A
- Authority
- AU
- Australia
- Prior art keywords
- plastic material
- pressure
- feedhead
- mould
- temperature
- 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.)
- Abandoned
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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Meat, Egg Or Seafood Products (AREA)
Abstract
The objects to be manufactured, particularly from partially crystallized plastic material are obtained by injecting liquid plastic material into a mould cavity through a feedhead; the plastic material is then allowed to cool and is removed from the mould. In order to obtain objects having a highly orientated crystalline structure without the need to apply extreme pressures, the temperature of the flowing plastic material during the injection operation is maintained at the most 50<o>C above the melting point of the material or above the temperature at the start of the melting and a pressure is used at the beginning of the injection which is comprised between 1400 and 2000 bars, which pressure is maintained until the pressure inside the mould cavity falls down to a very small value following the solidification of the synthetic material. The feedhead is kept permeable and the pressure in the cavity is measured, preferably after the feedhead.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0345183A AT381063B (en) | 1983-09-28 | 1983-09-28 | METHOD FOR PRODUCING PLASTIC PARTS |
| AT3451/83 | 1983-09-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU3438684A true AU3438684A (en) | 1985-04-23 |
Family
ID=3550700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU34386/84A Abandoned AU3438684A (en) | 1983-09-28 | 1984-09-28 | Verfahren zum herstellen von kunststoffteilen |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0157856B1 (en) |
| AT (2) | AT381063B (en) |
| AU (1) | AU3438684A (en) |
| DE (1) | DE3470395D1 (en) |
| IT (1) | IT1199437B (en) |
| WO (1) | WO1985001469A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62204451A (en) * | 1986-03-03 | 1987-09-09 | Daicel Chem Ind Ltd | Plastic substrate for optical disk and its production |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2361900A (en) * | 1941-10-13 | 1944-10-31 | Dow Chemical Co | Method of molding |
| GB1433136A (en) * | 1972-05-25 | 1976-04-22 | Imp Metal Ind Kynoch Ltd | Moulding articles |
| EP0091903A1 (en) * | 1981-05-21 | 1983-10-26 | KUBAT, Josef | Injection moulding process using high pressures |
| DE3138242C2 (en) * | 1981-09-25 | 1986-06-12 | Vsevolod Vasil'evič Abramov | Injection molding process for producing injection molded parts from thermoplastics and injection mold for carrying out the process |
-
1983
- 1983-09-28 AT AT0345183A patent/AT381063B/en not_active IP Right Cessation
-
1984
- 1984-09-28 AT AT84903708T patent/ATE33465T1/en not_active IP Right Cessation
- 1984-09-28 WO PCT/AT1984/000032 patent/WO1985001469A1/en active IP Right Grant
- 1984-09-28 EP EP84903708A patent/EP0157856B1/en not_active Expired
- 1984-09-28 AU AU34386/84A patent/AU3438684A/en not_active Abandoned
- 1984-09-28 IT IT04868/84A patent/IT1199437B/en active
- 1984-09-28 DE DE8484903708T patent/DE3470395D1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| AT381063B (en) | 1986-08-25 |
| IT1199437B (en) | 1988-12-30 |
| EP0157856A1 (en) | 1985-10-16 |
| WO1985001469A1 (en) | 1985-04-11 |
| ATE33465T1 (en) | 1988-04-15 |
| EP0157856B1 (en) | 1988-04-13 |
| IT8404868A0 (en) | 1984-09-28 |
| ATA345183A (en) | 1986-01-15 |
| DE3470395D1 (en) | 1988-05-19 |
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