JPS55142627A - Method of expansion molding - Google Patents
Method of expansion moldingInfo
- Publication number
- JPS55142627A JPS55142627A JP5166379A JP5166379A JPS55142627A JP S55142627 A JPS55142627 A JP S55142627A JP 5166379 A JP5166379 A JP 5166379A JP 5166379 A JP5166379 A JP 5166379A JP S55142627 A JPS55142627 A JP S55142627A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- cooling
- foam
- air
- indent
- 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.)
- Pending
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
-
- 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
- B29C44/3415—Heating or cooling
- B29C44/3426—Heating by introducing steam in the mould
Landscapes
- Molding Of Porous Articles (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
PURPOSE:To remove shrinkage and well of foam shaped articles to improve their quality by filling the mold indent with preliminary foaming particles heating to swell the particles to foam-shape the material, and thereafter carrying out the mold cooling by forcible air cooling. CONSTITUTION:When the mold closure is carried out to mutually match a cavity mold 1 with a core mold 2, a mold indent 3 is formed as a cavity between both molds 1 and 2, and the material can be placed in the mold indent. Further, a filler 4 is arranged to be filled with preliminary foaming particles consisting of a thermoplastic resin excellent in heat resistance through a material inlet port 41. In carrying out foam shaping, the preliminary foaming particles excellent in heat resistance placed in the mold indent 3 by means of the filler 4, and are subjected to heating by steam to swell and foam-shape the foaming particles and, thereafter, cooling air is supplied through spray holes 15 and 25 of air pilelines 14 and 24 via supply holes 13 and 23 of respective molds, without using cooling with water, and thus the mold cooling is carried out by forcible cooling by air.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5166379A JPS55142627A (en) | 1979-04-25 | 1979-04-25 | Method of expansion molding |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5166379A JPS55142627A (en) | 1979-04-25 | 1979-04-25 | Method of expansion molding |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55142627A true JPS55142627A (en) | 1980-11-07 |
Family
ID=12893109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5166379A Pending JPS55142627A (en) | 1979-04-25 | 1979-04-25 | Method of expansion molding |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55142627A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5978819A (en) * | 1982-10-27 | 1984-05-07 | Kanegafuchi Chem Ind Co Ltd | Cooling method of thermoplastic foamed resin being molded in mold |
CN105984133A (en) * | 2015-01-27 | 2016-10-05 | 常州市东科电子科技有限公司 | Multifunctional 3D printing head |
CN105984142A (en) * | 2015-01-27 | 2016-10-05 | 常州市东科电子科技有限公司 | Double-row-pore-filling 3D printing head |
CN105984139A (en) * | 2015-01-27 | 2016-10-05 | 常州市东科电子科技有限公司 | 3D printing apparatus with hot air polishing and cold air shaping |
-
1979
- 1979-04-25 JP JP5166379A patent/JPS55142627A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5978819A (en) * | 1982-10-27 | 1984-05-07 | Kanegafuchi Chem Ind Co Ltd | Cooling method of thermoplastic foamed resin being molded in mold |
CN105984133A (en) * | 2015-01-27 | 2016-10-05 | 常州市东科电子科技有限公司 | Multifunctional 3D printing head |
CN105984142A (en) * | 2015-01-27 | 2016-10-05 | 常州市东科电子科技有限公司 | Double-row-pore-filling 3D printing head |
CN105984139A (en) * | 2015-01-27 | 2016-10-05 | 常州市东科电子科技有限公司 | 3D printing apparatus with hot air polishing and cold air shaping |
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