JPH0225798B2 - - Google Patents
Info
- Publication number
- JPH0225798B2 JPH0225798B2 JP8897185A JP8897185A JPH0225798B2 JP H0225798 B2 JPH0225798 B2 JP H0225798B2 JP 8897185 A JP8897185 A JP 8897185A JP 8897185 A JP8897185 A JP 8897185A JP H0225798 B2 JPH0225798 B2 JP H0225798B2
- Authority
- JP
- Japan
- Prior art keywords
- lead
- core
- diameter
- molding material
- extrusion molding
- 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.)
- Expired
Links
- 238000001125 extrusion Methods 0.000 claims description 10
- 239000012778 molding material Substances 0.000 claims description 8
- 239000011230 binding agent Substances 0.000 claims description 5
- 239000001993 wax Substances 0.000 claims description 4
- 239000003086 colorant Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000013078 crystal Substances 0.000 description 5
- 239000006229 carbon black Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229920000915 polyvinyl chloride Polymers 0.000 description 3
- 239000004800 polyvinyl chloride Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- -1 inorganic fillers Chemical compound 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 1
- 239000012461 cellulose resin Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000007849 furan resin Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 229940057995 liquid paraffin Drugs 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
Landscapes
- Inks, Pencil-Leads, Or Crayons (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8897185A JPS61248798A (ja) | 1985-04-26 | 1985-04-26 | シヤ−プペンシル用芯の製造方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8897185A JPS61248798A (ja) | 1985-04-26 | 1985-04-26 | シヤ−プペンシル用芯の製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61248798A JPS61248798A (ja) | 1986-11-06 |
| JPH0225798B2 true JPH0225798B2 (US07714131-20100511-C00038.png) | 1990-06-05 |
Family
ID=13957696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8897185A Granted JPS61248798A (ja) | 1985-04-26 | 1985-04-26 | シヤ−プペンシル用芯の製造方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61248798A (US07714131-20100511-C00038.png) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03118396U (US07714131-20100511-C00038.png) * | 1990-03-20 | 1991-12-06 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6405835B2 (ja) * | 2013-12-27 | 2018-10-17 | ぺんてる株式会社 | 焼成鉛筆芯 |
-
1985
- 1985-04-26 JP JP8897185A patent/JPS61248798A/ja active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03118396U (US07714131-20100511-C00038.png) * | 1990-03-20 | 1991-12-06 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61248798A (ja) | 1986-11-06 |
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