JPS5529554A - Preparation of pencil lead - Google Patents
Preparation of pencil leadInfo
- Publication number
- JPS5529554A JPS5529554A JP10243078A JP10243078A JPS5529554A JP S5529554 A JPS5529554 A JP S5529554A JP 10243078 A JP10243078 A JP 10243078A JP 10243078 A JP10243078 A JP 10243078A JP S5529554 A JPS5529554 A JP S5529554A
- Authority
- JP
- Japan
- Prior art keywords
- polyethylene
- temperature
- aluminum
- powder
- bronze
- 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
Abstract
PURPOSE: To obtain a pencil lead having improved breaking strength and writing property, by molding a uniform mixture of an emulsifiable polyethylene, a metal pigment, e.g. aluminum or bronze powder, and a colorant, at the softening temperature of the polyethylene or below.
CONSTITUTION: (A) 15W40wt% of an emulsifiable low-molecular polyethylene having carboxyl groups in the molecule, a softening point (T) of 110W140°C, and an acid value ≥10, is kneaded with (B) 35W75wt% of finely divided scaly metal powder, e.g. aluminum, bronze, gold, or silver powder, having a thickness ≤0.1μ, (C) 10W40wt% of a heat-resistant pigment having an upper limit of heat resistance ≥180°C or an oil-soluble dye, e.g. Phthalocyanine Blue or Green at a temperature 20W30°C higher than T in a kneader, extruded and molded at a temperature a little lower than T, then cut to the desired length.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53102430A JPS586758B2 (en) | 1978-08-22 | 1978-08-22 | How to make pencil lead |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53102430A JPS586758B2 (en) | 1978-08-22 | 1978-08-22 | How to make pencil lead |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5529554A true JPS5529554A (en) | 1980-03-01 |
JPS586758B2 JPS586758B2 (en) | 1983-02-05 |
Family
ID=14327239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53102430A Expired JPS586758B2 (en) | 1978-08-22 | 1978-08-22 | How to make pencil lead |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS586758B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5998176A (en) * | 1982-11-29 | 1984-06-06 | Pentel Kk | Manufacture of core of colored pencil |
JPS59211981A (en) * | 1983-05-14 | 1984-11-30 | 富士電機株式会社 | Connecting socket |
CN102964925A (en) * | 2012-11-29 | 2013-03-13 | 山西大学 | Blue solid writing pen |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20220083387A (en) | 2020-12-11 | 2022-06-20 | 엘지전자 주식회사 | Fan motor |
-
1978
- 1978-08-22 JP JP53102430A patent/JPS586758B2/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5998176A (en) * | 1982-11-29 | 1984-06-06 | Pentel Kk | Manufacture of core of colored pencil |
JPH0352506B2 (en) * | 1982-11-29 | 1991-08-12 | Pentel Kk | |
JPS59211981A (en) * | 1983-05-14 | 1984-11-30 | 富士電機株式会社 | Connecting socket |
JPS6310871B2 (en) * | 1983-05-14 | 1988-03-09 | Fuji Electric Co Ltd | |
CN102964925A (en) * | 2012-11-29 | 2013-03-13 | 山西大学 | Blue solid writing pen |
Also Published As
Publication number | Publication date |
---|---|
JPS586758B2 (en) | 1983-02-05 |
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