SU1623879A1 - Pencil - Google Patents
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- Publication number
- SU1623879A1 SU1623879A1 SU874286579A SU4286579A SU1623879A1 SU 1623879 A1 SU1623879 A1 SU 1623879A1 SU 874286579 A SU874286579 A SU 874286579A SU 4286579 A SU4286579 A SU 4286579A SU 1623879 A1 SU1623879 A1 SU 1623879A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- pencil
- improving
- lead
- polyurethane foam
- performance properties
- Prior art date
Links
- 229920005830 Polyurethane Foam Polymers 0.000 claims abstract description 4
- 239000011496 polyurethane foam Substances 0.000 claims abstract description 4
- 239000006260 foam Substances 0.000 claims 1
- 229920003023 plastic Polymers 0.000 claims 1
- 239000004033 plastic Substances 0.000 claims 1
- 239000010454 slate Substances 0.000 claims 1
- 241001149231 Arachnis x Vanda Species 0.000 description 1
- NYBBQAJSSIYJKU-UHFFFAOYSA-N ClC(C)(Cl)Cl.P(=O)(O)(O)O Chemical compound ClC(C)(Cl)Cl.P(=O)(O)(O)O NYBBQAJSSIYJKU-UHFFFAOYSA-N 0.000 description 1
- 241001422033 Thestylus Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
Landscapes
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
Изобретение относитс к канцел рским принадлежност м и позволь ет повысить качество каранадаша па счет улучшени его эксплуатационных свойств. Карандаш содержит грифель и оболочку, выполненную из пенополиуретана замкнуто- чеистой структуры с плотностью 200-400 кг/м .The invention relates to stationery and allows improving the quality of karadadash by improving its performance properties. The pencil contains a lead and a shell made of polyurethane foam of a closed-cellular structure with a density of 200-400 kg / m.
Description
Изобретение относитс к канцел рским принадлежност м, в частности к конструкции карандашей.This invention relates to stationery, in particular, to the construction of pencils.
Цель изобретени - повышение качества карандаша за счет улучшени его эксплуатационных свойств.The purpose of the invention is to improve the quality of a pencil by improving its performance properties.
Карандаш содержит грифель и оболочку , выполненную из пенополиуретана замкнуто- чеистой структуры с плотностью 200-АОО кг/м3.The pencil contains a lead and a shell made of polyurethane foam of a closed-cellular structure with a density of 200 kg / m3.
Карандли изготовл ют следующим образом.The pencils are made as follows.
В объемную форму карандаша по оси устанавливают грифель и в свободное пространство ввод т реакционную смесь, например, следующих компонентов в соотношении, мас.%: лапромол 20А-60.0; полиэфир П7-АО.О; трихлор- этанфосфат 30,0; эмульгатор ВНИИСС 20,0; полиизоцианпт-Е 200,0. После затвердевани пенополиуретана форму открывают и извлекают карандаш.A stylus is placed in the volumetric shape of a pencil and the reaction mixture is introduced into free space, for example, of the following components in a ratio, wt%: lapromol 20A-60.0; polyester P7-AO.O; trichloro ethane phosphate 30.0; emulsifier VNIISS 20.0; polyisocyanpt-E 200.0. After curing the polyurethane foam, the mold is opened and the pencil is removed.
Предлагаемый карандаш обладает улучшенными эксплуатационными свойствами за счет исключени выскальзывани грифел из оболочки. Повышенна механическа адгези грифел к оболочке достигаетс в результате заполнени материалом оболочки макронеровностей , по вл ющихс на поверхности грифел в результате выплавлени парафина, вход щего в состав грифел , при формировании оболочки к арандапа.The proposed pencil has improved performance properties by eliminating the slip of the stylus from the shell. Increased mechanical adhesion of the lead to the shell is achieved as a result of filling the shell with macro-roughness, which appears on the surface of the lead as a result of melting paraffin, which is part of the lead, during the formation of the shell to the aranda.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU874286579A SU1623879A1 (en) | 1987-07-20 | 1987-07-20 | Pencil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU874286579A SU1623879A1 (en) | 1987-07-20 | 1987-07-20 | Pencil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1623879A1 true SU1623879A1 (en) | 1991-01-30 |
Family
ID=21320322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU874286579A SU1623879A1 (en) | 1987-07-20 | 1987-07-20 | Pencil |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1623879A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5735622A (en) * | 1995-12-14 | 1998-04-07 | Pentech International Inc. | Writing instrument with a compressible friction coating and method of making |
| RU2732375C2 (en) * | 2016-06-21 | 2020-09-16 | Конте | Simple or colored pencil |
-
1987
- 1987-07-20 SU SU874286579A patent/SU1623879A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Патент DE Г 1461292, кл. В A3 К 19/16, 1972. * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5735622A (en) * | 1995-12-14 | 1998-04-07 | Pentech International Inc. | Writing instrument with a compressible friction coating and method of making |
| RU2732375C2 (en) * | 2016-06-21 | 2020-09-16 | Конте | Simple or colored pencil |
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