ES404457A1 - Method of injection moulding synthetic resins - Google Patents
Method of injection moulding synthetic resinsInfo
- Publication number
- ES404457A1 ES404457A1 ES404457A ES404457A ES404457A1 ES 404457 A1 ES404457 A1 ES 404457A1 ES 404457 A ES404457 A ES 404457A ES 404457 A ES404457 A ES 404457A ES 404457 A1 ES404457 A1 ES 404457A1
- Authority
- ES
- Spain
- Prior art keywords
- mold
- resin
- mass
- injection moulding
- synthetic resins
- 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
- 238000000034 method Methods 0.000 title abstract 2
- 238000001746 injection moulding Methods 0.000 title 1
- 229920003002 synthetic resin Polymers 0.000 title 1
- 239000000057 synthetic resin Substances 0.000 title 1
- 239000011347 resin Substances 0.000 abstract 4
- 229920005989 resin Polymers 0.000 abstract 4
- 238000002347 injection Methods 0.000 abstract 3
- 239000007924 injection Substances 0.000 abstract 3
- 238000000465 moulding Methods 0.000 abstract 2
- 238000000137 annealing Methods 0.000 abstract 1
- 230000008602 contraction Effects 0.000 abstract 1
- 230000004927 fusion Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000007711 solidification Methods 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 229920001169 thermoplastic Polymers 0.000 abstract 1
- 239000004416 thermosoftening plastic Substances 0.000 abstract 1
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)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
A procedure for injecting thermoplastic synthetic molding resins, which consists of injecting molten resin into a mold at a temperature of 0º to 60ºC, essentially in the form of a laminar flow, regulating the injection speed; when the mold has been filled with the injected resin, slightly deviate in the injection direction that part of the resin that is still in the state of fusion in the inner section of the mold, with a higher additional injection pressure than that initially applied, so that an efficient annealing is carried out; and, at the time of molding, keep the temperature difference between the outer and central parts of a molded mass as much as possible, thereby intentionally producing the solidification contraction of said mass, produced concentrated in its central part, in the form of empty or hollow spaces. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4810371 | 1971-07-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES404457A1 true ES404457A1 (en) | 1975-06-01 |
Family
ID=12793966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES404457A Expired ES404457A1 (en) | 1971-07-02 | 1972-07-01 | Method of injection moulding synthetic resins |
Country Status (6)
| Country | Link |
|---|---|
| AU (1) | AU465857B2 (en) |
| DE (1) | DE2232094A1 (en) |
| ES (1) | ES404457A1 (en) |
| FR (1) | FR2144710B1 (en) |
| GB (1) | GB1381639A (en) |
| IT (1) | IT962357B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3478338D1 (en) * | 1983-02-18 | 1989-06-29 | Wavin Bv | Thick-walled moulded part, method for injection-moulding a thick-walled moulded part and apparatus with mould for carrying out this method |
| CH664924A5 (en) * | 1984-12-04 | 1988-04-15 | Stella Werke Ag | METHOD FOR PRODUCING DUROPLASTIC SHEET PANELS AND DEVICE FOR IMPLEMENTING THE METHOD. |
| CN112659402A (en) * | 2020-11-27 | 2021-04-16 | 浙江拓福塑业股份有限公司 | High-strength injection molding material for household appliance shell and injection molding method |
-
1972
- 1972-06-28 GB GB3026872A patent/GB1381639A/en not_active Expired
- 1972-06-30 AU AU44111/72A patent/AU465857B2/en not_active Expired
- 1972-06-30 FR FR7223845A patent/FR2144710B1/fr not_active Expired
- 1972-06-30 DE DE19722232094 patent/DE2232094A1/en active Pending
- 1972-07-01 ES ES404457A patent/ES404457A1/en not_active Expired
- 1972-07-03 IT IT2652972A patent/IT962357B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| GB1381639A (en) | 1975-01-22 |
| DE2232094A1 (en) | 1973-01-11 |
| FR2144710A1 (en) | 1973-02-16 |
| AU4411172A (en) | 1974-01-03 |
| AU465857B2 (en) | 1975-10-09 |
| IT962357B (en) | 1973-12-20 |
| FR2144710B1 (en) | 1976-06-11 |
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