JPS5722093A - Manufacture of artificial clamshell "goishi" - Google Patents
Manufacture of artificial clamshell "goishi"Info
- Publication number
- JPS5722093A JPS5722093A JP9687780A JP9687780A JPS5722093A JP S5722093 A JPS5722093 A JP S5722093A JP 9687780 A JP9687780 A JP 9687780A JP 9687780 A JP9687780 A JP 9687780A JP S5722093 A JPS5722093 A JP S5722093A
- Authority
- JP
- Japan
- Prior art keywords
- clamshell
- stonelike
- stone
- manufacture
- plastics
- 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
- Printing Methods (AREA)
- Decoration By Transfer Pictures (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
PURPOSE: To manufacture, with good reproducibility, an aritificial clamshell "go" stone which makes click sound closely similar to a real clamshell stone when placed on a "go" board, by forming into a "go" stonelike shape of a mixture of plastics and a filler of a specific gravity, and by printing clamshell pattern on thus formed stone.
CONSTITUTION: After adding a polymerized catalyst (such as benzoyl peroxide) to a mixture of 15W60wt% of plastics (such as unsaturated polyester resin) and 85W45wt% of a filler (such as BaSo4) having specific gravity of 2.5 or more, it is left as it is for a while to allow viscosity to rise so as to form a semisolid material. Then, thus formed material is put into a metallic mold which has a "go" stonelike cavity and has been heated up to 80W160°C in advance, and pressure of 5kg/cm2 or more is applied to form the material into "go" stonelike object. Then, clamshell pattern is transfer copied and printed onto the surface of the "go" stonelike object.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9687780A JPS6059877B2 (en) | 1980-07-17 | 1980-07-17 | Method for manufacturing clam shell-like Go stones |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9687780A JPS6059877B2 (en) | 1980-07-17 | 1980-07-17 | Method for manufacturing clam shell-like Go stones |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5722093A true JPS5722093A (en) | 1982-02-04 |
JPS6059877B2 JPS6059877B2 (en) | 1985-12-27 |
Family
ID=14176640
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9687780A Expired JPS6059877B2 (en) | 1980-07-17 | 1980-07-17 | Method for manufacturing clam shell-like Go stones |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6059877B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0527449U (en) * | 1991-08-02 | 1993-04-09 | 株式会社竹村製作所 | Check valve |
JPH06109153A (en) * | 1992-09-22 | 1994-04-19 | Hirakawa Gaidamu:Kk | Valve with relief valve and piping method using valve with relief valve |
-
1980
- 1980-07-17 JP JP9687780A patent/JPS6059877B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6059877B2 (en) | 1985-12-27 |
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