JPS56109136A - Production of resin coated sand for molding - Google Patents
Production of resin coated sand for moldingInfo
- Publication number
- JPS56109136A JPS56109136A JP1000880A JP1000880A JPS56109136A JP S56109136 A JPS56109136 A JP S56109136A JP 1000880 A JP1000880 A JP 1000880A JP 1000880 A JP1000880 A JP 1000880A JP S56109136 A JPS56109136 A JP S56109136A
- Authority
- JP
- Japan
- Prior art keywords
- sand
- resin
- coated
- added
- unsaturated polyester
- 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.)
- Granted
Links
Landscapes
- Macromonomer-Based Addition Polymer (AREA)
- Mold Materials And Core Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
PURPOSE: To eliminate the stickiness of resin coated sand and improve sand clogging characteristic by adding a specific amount of a crystal nucleus agent to a crystalline unsaturated polyester resin as a binder at the time of producing resin coated sand for molds and cores.
CONSTITUTION: At the time of producing the resin coated sand for molds and cores in casting at relatively low temp. such as of Al by a hot melt method, sand is heated above the softening temp. of the resin to be coated and a crystalline unsaturated polyester resin is added thereto with agitation, whereby the surfaces of the molding sand are coated with the resin. In this case, a crystal nucleus agent of inorg. oxide such as silica or alumina having ≤1μ mean grain sizes is beforehand added at 0.1W3pts.wt. to 100pts.wt. of the crystalline unsaturated polyester resin to be added to the heated molding sand, and in the process of coating the same to the sand grains by a hot melt method, said crystal nucleus agent is again added at 1W5pts.wt. to 100pts.wt. resin. The coated sand free from stickiness is obtained in a short time.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1000880A JPS6043821B2 (en) | 1980-02-01 | 1980-02-01 | Manufacturing method of resin-coated sand for foundries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1000880A JPS6043821B2 (en) | 1980-02-01 | 1980-02-01 | Manufacturing method of resin-coated sand for foundries |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56109136A true JPS56109136A (en) | 1981-08-29 |
| JPS6043821B2 JPS6043821B2 (en) | 1985-09-30 |
Family
ID=11738366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1000880A Expired JPS6043821B2 (en) | 1980-02-01 | 1980-02-01 | Manufacturing method of resin-coated sand for foundries |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6043821B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5897461A (en) * | 1981-12-02 | 1983-06-09 | Hitachi Chem Co Ltd | Resin composition for binding of molding sand grains |
| JPS5947041A (en) * | 1982-09-13 | 1984-03-16 | Hitachi Chem Co Ltd | Production of resin coated sand for casting |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102873270B (en) * | 2012-09-29 | 2014-09-17 | 温州市康霸洁具有限公司 | Production device of resin gel core sand |
-
1980
- 1980-02-01 JP JP1000880A patent/JPS6043821B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5897461A (en) * | 1981-12-02 | 1983-06-09 | Hitachi Chem Co Ltd | Resin composition for binding of molding sand grains |
| JPS5947041A (en) * | 1982-09-13 | 1984-03-16 | Hitachi Chem Co Ltd | Production of resin coated sand for casting |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6043821B2 (en) | 1985-09-30 |
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