CN2220366Y - Durable chalk without touching hand - Google Patents
Durable chalk without touching hand Download PDFInfo
- Publication number
- CN2220366Y CN2220366Y CN 95208010 CN95208010U CN2220366Y CN 2220366 Y CN2220366 Y CN 2220366Y CN 95208010 CN95208010 CN 95208010 CN 95208010 U CN95208010 U CN 95208010U CN 2220366 Y CN2220366 Y CN 2220366Y
- Authority
- CN
- China
- Prior art keywords
- chalk
- ordinary
- durable
- utility
- model
- 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 - Fee Related
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- Cosmetics (AREA)
Abstract
The utility model relates to a durable chalk without touching hands, which belongs to a writing instrument. The durable chalk without touching hands is composed of an ordinary chalk and a film, and is characterized in that the film is glued on the ordinary chalk. The utility model has the characteristics of the same appearance with an ordinary chalk, easy writing, hard breaking and low cost, produces no powder fouling hands or bags when the durable chalk is used or put in a bag, is sanitary and clean and moistureproof. Therefore, the utility model overcomes the defects that powders adhere to chalks when the existing ordinary chalks are used for writing, etc., and is a substitute of the existing ordinary chalks.
Description
The utility model relates to a kind of Writing instrument.
Current, chalk is generally made by gypsum, its outward appearance be one thicker, one is thinner cylindrical, generally on blackboard, use, can also can only be contained in the box when carrying, or wrap in the paper along attached many powder on hand when writing, otherwise that can do is unhygienic, in use, will fracture with some strength chalk a little, be placed on moist place and just can not re-use.
The purpose of this utility model is to provide a kind of not frangibility, does not have powder when writing along investing on hand, is not afraid of moist novel chalk.
The utility model is achieved in that on the surface of existing chalk and covers thin film, and this layer film thickness is 0.01～0.02mm, and it can be made or material with glue is made by polyvinyl alcohol.
The utility model from outside watch equally substantially with common chalk, it has direct use writes easily, frangibility is not with low cost, puts into pocket or when using, does not have powder along attached for whole, clean hygiene, and be not afraid of humidity.
Figure is the utility model chalk profilograph.
1 is existing general chalk among the figure, on chalk 1, cover layer of transparent film 2, it is thick that this layer transparent membrane can be made into 0.01～0.02mm, it has gluey character, and is water insoluble under the normal temperature, is dispersed into the hydrophilic colloid of certain stability in water, skin is safe from harm, do not have smell, do not have color and luster, these layer film 2 electric available polyethylene alcohol are made.
Claims (3)
1, the durable chalk of not touching with one's hand is made of common chalk (1) and thin film (2), it is characterized in that: cover thin film on common chalk (1).
2, chalk according to claim 1 is characterized in that: film (2) thickness that covers on chalk (1) is 0.01～0.02mm.
3, chalk according to claim 1 and 2 is characterized in that: cover the film (2) on chalk (1), made by polyvinyl alcohol or material with gluey character.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95208010 CN2220366Y (en) | 1995-04-03 | 1995-04-03 | Durable chalk without touching hand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95208010 CN2220366Y (en) | 1995-04-03 | 1995-04-03 | Durable chalk without touching hand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2220366Y true CN2220366Y (en) | 1996-02-21 |
Family
ID=33859463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95208010 Expired - Fee Related CN2220366Y (en) | 1995-04-03 | 1995-04-03 | Durable chalk without touching hand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2220366Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102848798A (en) * | 2012-10-11 | 2013-01-02 | 向国忠 | Manufacturing method of clean chalk |
| CN103253445A (en) * | 2012-02-16 | 2013-08-21 | 真彩文具股份有限公司 | Method for manufacturing artistic oil painting stick outer membrane not apt to stain hands |
| CN103722938A (en) * | 2012-10-11 | 2014-04-16 | 向国忠 | Clean chalk |
-
1995
- 1995-04-03 CN CN 95208010 patent/CN2220366Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103253445A (en) * | 2012-02-16 | 2013-08-21 | 真彩文具股份有限公司 | Method for manufacturing artistic oil painting stick outer membrane not apt to stain hands |
| CN102848798A (en) * | 2012-10-11 | 2013-01-02 | 向国忠 | Manufacturing method of clean chalk |
| CN103722938A (en) * | 2012-10-11 | 2014-04-16 | 向国忠 | Clean chalk |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |