CN1069503A - 光滑粉笔及其生产方法 - Google Patents
光滑粉笔及其生产方法 Download PDFInfo
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- CN1069503A CN1069503A CN 92109562 CN92109562A CN1069503A CN 1069503 A CN1069503 A CN 1069503A CN 92109562 CN92109562 CN 92109562 CN 92109562 A CN92109562 A CN 92109562A CN 1069503 A CN1069503 A CN 1069503A
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- chalk
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- gesso
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 5
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229920002472 Starch Polymers 0.000 claims abstract description 5
- 239000003292 glue Substances 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 235000019698 starch Nutrition 0.000 claims abstract description 5
- 239000008107 starch Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 4
- 238000004806 packaging method and process Methods 0.000 claims abstract description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 239000010440 gypsum Substances 0.000 abstract 1
- 229910052602 gypsum Inorganic materials 0.000 abstract 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000011507 gypsum plaster Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Landscapes
- Cosmetics (AREA)
- Dental Preparations (AREA)
Abstract
本发明公开了一种光滑粉笔及其生产方法，其主
要原料采用熟石膏粉，加少量滑石粉，微量聚乙烯醇
混合加水制成，然后用淀粉液浸入干粉笔过胶晒干包
装成品。其优点是对人体无害、书写流利、光滑不粘
手、卫生清洁、保护皮肤、不易断、成本低等。
Description
本发明涉及粉笔，特别是一种光滑粉笔及其生产方法。
现有微尘或无尘粉笔，其原料由石灰粉和滑石粉做成，由于石灰碱性大，对教师的健康有一定的影响，书写时粉末粘手，特别是冬天对手的皮肤导致龟裂症。
本发明的目的提供一种其主要原料用熟石膏粉代替石灰粉，用淀粉液过胶的光滑粉笔。
本发明的技术解决方案是这样的，光滑粉笔其主要原料是熟石膏粉，加少量的滑石粉，微量的聚乙稀醇混合加水做成。
生产光滑粉笔的方法是把熟石膏粉、滑石粉、聚乙稀混合，加水搅拌1-2分钟后倒进模具成型，凝结1-3分钟脱模，然后晒干或凉干，最后用1%淀粉液浸入干的粉笔过胶1-2秒钟，晒干包装成品。
本发明的优点是：对人体无害，不粘手，保护皮肤，无尘卫生，书写流利，不易断，而且降低成本。
本发明的最佳实施方案是：将生石膏煅烧脱水生成熟石膏，然后粉碎过300目备用。按一次生产500支的模具配料，熟石膏粉1650克、滑石粉75克、聚乙稀醇1克混合加水2050克搅拌均匀1-2分钟后，倒入模具成型，凝结1-3分钟即可脱模。然后晒干或凉干，再用1%淀粉液浸入干的粉笔过胶1-2秒钟，晒干包装成品。
Claims (2)
1、一种光滑粉笔，其特征在于用熟石膏粉为主要原料，
2、一种生产如权利要求1所述光滑粉笔的方法，其特征在于：将熟石膏粉、滑石粉、聚乙稀醇混合后加水搅拌1-2分钟，倒进模具成型，凝结1-3分钟脱模，然后晒干或凉干，最后再1%淀粉液浸入干的粉笔过胶1-2秒钟，晒干包装成品。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92109562 CN1069503A (zh) | 1992-08-15 | 1992-08-15 | 光滑粉笔及其生产方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92109562 CN1069503A (zh) | 1992-08-15 | 1992-08-15 | 光滑粉笔及其生产方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1069503A true CN1069503A (zh) | 1993-03-03 |
Family
ID=4944220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92109562 Pending CN1069503A (zh) | 1992-08-15 | 1992-08-15 | 光滑粉笔及其生产方法 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1069503A (zh) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106433322A (zh) * | 2016-12-09 | 2017-02-22 | 徐浩 | 一种无尘粉笔及其制备方法 |
-
1992
- 1992-08-15 CN CN 92109562 patent/CN1069503A/zh active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106433322A (zh) * | 2016-12-09 | 2017-02-22 | 徐浩 | 一种无尘粉笔及其制备方法 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |