JPS5529554A - Preparation of pencil lead - Google Patents

Preparation of pencil lead

Info

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
Application number
JP10243078A
Other languages
Japanese (ja)
Other versions
JPS586758B2 (en
Inventor
Akio Hatanaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sakura Color Products Corp
Original Assignee
Sakura Color Products Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sakura Color Products Corp filed Critical Sakura Color Products Corp
Priority to JP53102430A priority Critical patent/JPS586758B2/en
Publication of JPS5529554A publication Critical patent/JPS5529554A/en
Publication of JPS586758B2 publication Critical patent/JPS586758B2/en
Expired legal-status Critical Current

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
JP53102430A 1978-08-22 1978-08-22 How to make pencil lead Expired JPS586758B2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220083387A (en) 2020-12-11 2022-06-20 엘지전자 주식회사 Fan motor

Cited By (5)

* Cited by examiner, † Cited by third party
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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