CN103722938A - Clean chalk - Google Patents
Clean chalk Download PDFInfo
- Publication number
- CN103722938A CN103722938A CN201210383910.3A CN201210383910A CN103722938A CN 103722938 A CN103722938 A CN 103722938A CN 201210383910 A CN201210383910 A CN 201210383910A CN 103722938 A CN103722938 A CN 103722938A
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- China
- Prior art keywords
- chalk
- clean
- rough
- present
- user
- 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.)
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Abstract
The invention relates to clean chalk which comprises a chalk body. The clean chalk is characterized in that the surface of the side wall of the chalk body is rough, and an edible gelatine layer is arranged on the rough surface of the side wall. The clean chalk is simple in structure and low in cost, effective quarantine can be formed between the surface of the chalk and a user, and the phenomenon that a large amount of chalk dust falls on a hand of a user during writing is avoided.
Description
Technical field
The present invention relates to a kind of chalk, relate in particular to a kind of clean chalk.
Background technology
The main deficiency that the chalk using now exists is that teacher can be stained with on hand a large amount of chalk dusts in writing process, if will stick in because of carelessness on clothes, therefore needs to wash one's hands in time.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of clean chalk simple in structure, with low cost.
For addressing the above problem, the clean chalk of one of the present invention, comprises chalk body, it is characterized in that: the sidewall surfaces of described chalk body is rough-shape, and this coarse shape sidewall surfaces is provided with edible gelatin layer.
The present invention compared with prior art has the following advantages:
1, owing to being provided with nontoxic, harmless edible gelatin layer in the present invention, therefore, to user's health, can not cause infringement.
2, due to chalk surface uniform of the present invention wrap up edible gelatin layer, therefore, can make between chalk surface and user to form effectively isolation, the phenomenon of having avoided user can be stained with on hand a large amount of chalk dusts in writing process occurs.
3, the present invention is simple in structure, with low cost.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is structural representation of the present invention.
In figure: 1-chalk body, 2-edible gelatin layer.
The specific embodiment
As shown in Figure 1, a kind of clean chalk, comprises chalk body 1.The sidewall surfaces of chalk body 1 is rough-shape, and this coarse shape sidewall surfaces is provided with edible gelatin layer 2.
Claims (1)
1. a clean chalk, comprises chalk body (1), it is characterized in that: the sidewall surfaces of described chalk body (1) is rough-shape, and this coarse shape sidewall surfaces is provided with edible gelatin layer (2).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210383910.3A CN103722938A (en) | 2012-10-11 | 2012-10-11 | Clean chalk |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210383910.3A CN103722938A (en) | 2012-10-11 | 2012-10-11 | Clean chalk |
Publications (1)
Publication Number | Publication Date |
---|---|
CN103722938A true CN103722938A (en) | 2014-04-16 |
Family
ID=50447337
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201210383910.3A Pending CN103722938A (en) | 2012-10-11 | 2012-10-11 | Clean chalk |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN103722938A (en) |
Citations (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN86207837U (en) * | 1986-10-11 | 1987-05-13 | 王凤祥 | Chalk with protective coating |
CN86204320U (en) * | 1986-11-19 | 1987-06-03 | 胡建人 | Chalk with membrane |
CN1046746A (en) * | 1989-04-29 | 1990-11-07 | 刘凤义 | Film enveloped chalk is made liquid |
CN2172717Y (en) * | 1993-03-02 | 1994-07-27 | 林石 | Chalk without polluting hand |
CN2219205Y (en) * | 1995-01-25 | 1996-02-07 | 章培善 | Sanitary chalk |
CN2220366Y (en) * | 1995-04-03 | 1996-02-21 | 赵建平 | Durable chalk without touching hand |
DE19860258A1 (en) * | 1998-12-24 | 2000-06-29 | Nele Kosmetik Gmbh | Manufacturing method for cosmetic pens with wood sleeve uses spacer cartridges glued between timber plates and melted out to form mold for pen cartridge |
JP2000253929A (en) * | 1999-03-10 | 2000-09-19 | I Meito:Kk | Cosmetic pencil with thick and narrow cores |
CN2400285Y (en) * | 1999-11-26 | 2000-10-11 | 刘旭光 | Sanitary durable chalks |
CN2543714Y (en) * | 2002-06-08 | 2003-04-09 | 王庆元 | Surface coated powder free chalk |
CN2544957Y (en) * | 2001-12-14 | 2003-04-16 | 梁树清 | Environmentally friendly chalk |
CN2557336Y (en) * | 2002-03-12 | 2003-06-25 | 刘德喜 | Environment protection chalk |
CN2581190Y (en) * | 2002-12-03 | 2003-10-22 | 北京市门头沟区粉笔厂 | Environmental protection chalk capable of making hand hold clean |
CN1597337A (en) * | 2004-09-07 | 2005-03-23 | 邓社文 | Manufacturing method of sanitary chalk |
CN1676558A (en) * | 2005-01-31 | 2005-10-05 | 罗南博 | Preparation for preventing chalk dust from sticking hand |
CN1817659A (en) * | 2006-03-15 | 2006-08-16 | 周巽 | Chalk having no pollution on finger for writing |
CN2875822Y (en) * | 2006-03-08 | 2007-03-07 | 孙一鸣 | Hand clean dustless chalk |
CN2913028Y (en) * | 2006-05-24 | 2007-06-20 | 张伟 | Dustless sanitation chalk |
CN200992047Y (en) * | 2006-12-29 | 2007-12-19 | 程思 | Clean chalk |
CN101423627A (en) * | 2008-10-24 | 2009-05-06 | 山西大学 | Polymer-coated materials for solid writing substance and polymer-coated method thereof |
CN202123836U (en) * | 2011-06-14 | 2012-01-25 | 马栋材 | Clean hand protecting chalk |
-
2012
- 2012-10-11 CN CN201210383910.3A patent/CN103722938A/en active Pending
Patent Citations (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN86207837U (en) * | 1986-10-11 | 1987-05-13 | 王凤祥 | Chalk with protective coating |
CN86204320U (en) * | 1986-11-19 | 1987-06-03 | 胡建人 | Chalk with membrane |
CN1046746A (en) * | 1989-04-29 | 1990-11-07 | 刘凤义 | Film enveloped chalk is made liquid |
CN2172717Y (en) * | 1993-03-02 | 1994-07-27 | 林石 | Chalk without polluting hand |
CN2219205Y (en) * | 1995-01-25 | 1996-02-07 | 章培善 | Sanitary chalk |
CN2220366Y (en) * | 1995-04-03 | 1996-02-21 | 赵建平 | Durable chalk without touching hand |
DE19860258A1 (en) * | 1998-12-24 | 2000-06-29 | Nele Kosmetik Gmbh | Manufacturing method for cosmetic pens with wood sleeve uses spacer cartridges glued between timber plates and melted out to form mold for pen cartridge |
JP2000253929A (en) * | 1999-03-10 | 2000-09-19 | I Meito:Kk | Cosmetic pencil with thick and narrow cores |
CN2400285Y (en) * | 1999-11-26 | 2000-10-11 | 刘旭光 | Sanitary durable chalks |
CN2544957Y (en) * | 2001-12-14 | 2003-04-16 | 梁树清 | Environmentally friendly chalk |
CN2557336Y (en) * | 2002-03-12 | 2003-06-25 | 刘德喜 | Environment protection chalk |
CN2543714Y (en) * | 2002-06-08 | 2003-04-09 | 王庆元 | Surface coated powder free chalk |
CN2581190Y (en) * | 2002-12-03 | 2003-10-22 | 北京市门头沟区粉笔厂 | Environmental protection chalk capable of making hand hold clean |
CN1597337A (en) * | 2004-09-07 | 2005-03-23 | 邓社文 | Manufacturing method of sanitary chalk |
CN1676558A (en) * | 2005-01-31 | 2005-10-05 | 罗南博 | Preparation for preventing chalk dust from sticking hand |
CN2875822Y (en) * | 2006-03-08 | 2007-03-07 | 孙一鸣 | Hand clean dustless chalk |
CN1817659A (en) * | 2006-03-15 | 2006-08-16 | 周巽 | Chalk having no pollution on finger for writing |
CN2913028Y (en) * | 2006-05-24 | 2007-06-20 | 张伟 | Dustless sanitation chalk |
CN200992047Y (en) * | 2006-12-29 | 2007-12-19 | 程思 | Clean chalk |
CN101423627A (en) * | 2008-10-24 | 2009-05-06 | 山西大学 | Polymer-coated materials for solid writing substance and polymer-coated method thereof |
CN202123836U (en) * | 2011-06-14 | 2012-01-25 | 马栋材 | Clean hand protecting chalk |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
EXSB | Decision made by sipo to initiate substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140416 |
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RJ01 | Rejection of invention patent application after publication |