CN201808345U - Blackboard - Google Patents

Blackboard Download PDF

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Publication number
CN201808345U
CN201808345U CN2010205438344U CN201020543834U CN201808345U CN 201808345 U CN201808345 U CN 201808345U CN 2010205438344 U CN2010205438344 U CN 2010205438344U CN 201020543834 U CN201020543834 U CN 201020543834U CN 201808345 U CN201808345 U CN 201808345U
Authority
CN
China
Prior art keywords
blackboard
iron plate
coating
rough
crude
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
Application number
CN2010205438344U
Other languages
Chinese (zh)
Inventor
方佳乐
Original Assignee
方佳乐
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 方佳乐 filed Critical 方佳乐
Priority to CN2010205438344U priority Critical patent/CN201808345U/en
Application granted granted Critical
Publication of CN201808345U publication Critical patent/CN201808345U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides a blackboard which is composed of an iron plate (1) and a coating (2), wherein, the coating is a black resin coating with a rough surface (3), and the surface roughness is 5-50mm based on arithmetical mean deviation of the profile Ra. The blackboard provided by the utility model is formed by covering the black resin coating with the rough surface on the iron plate, wherein, a magnet can be firmly adsorbed on the iron plate, and chalk writing can be carried out on the black rough surface. Compared with the prior art, the utility model has the advantages that the defects such as failure in chalk writing due to a smooth surface of a white board, frangible ground glass, and easily demagnetized and expensive magnetic coating are solved; and the blackboard is firm and has low cost, chalk writing can be carried out on the blackboard, and the blackboard can absorb magnets.

Description

Blackboard
Technical field
The utility model relates to a kind of blackboard, belong to and to write in the operation or the blackboard field of drawing article.
Background technology
Blackboard is a kind ofly to be used to the instrument writing or paint in teaching or in other public occasions, has experienced from wooden, stone matter being fabricated into the development that frosted glass is plate body, and simple and crude also useful cement wall rinses that the lacquer back uses.Occurred again at present and can be sandwiched in the blackboard of the irony making on the plate or add the blackboard of having put magnetic material, as the blank of going up the making of coating whiting with iron plate, the frosted glass blackboard of back side coating magnetic coating with magnetic paper.But blank can only be write with marking pen, and the magnetic intensity of magnetic coating is not high, cost of manufacture is higher and easy demagnetization, and the former capital scope of application is wideless.
Summary of the invention
At above-mentioned defective, the utility model is exactly the irony blackboard that will provide a kind of available chalk to write.
The blackboard that the utility model provides is made of iron plate and dope layer, and said dope layer is the crude black resin coating in surface, and the roughmeter that surperficial crude degree is represented with profile arithmetic average error Ra is 5 ~ 50mm.
The blackboard that the utility model provides is gone up coated with the crude black resin coating formation in surface with iron plate, and wherein iron plate can make magnet adsorb securely on it, and black and crude surface make and can write with chalk thereon.Compared with prior art, overcome because of whiteboard surface smoothly, can not write, magnetic coating easy demagnetization frangible and expensive deficiency, provide a kind of firm, at a low price and can use chalk to write blackboard with magnet absorption with chalk with frosted glass.
Description of drawingsFig. 1 cuts open figure for the solid of the utility model one embodiment, among the figure: 1-iron plate, 2-dope layer, the surface that 3-is crude.
The specific embodimentAs shown in drawings, with iron plate, the higher iron plate of iron content preferably, the surface is with black resin coating, and at last with surperficial sanding, the roughmeter that surperficial crude degree is represented with profile arithmetic average error Ra is that it is constituted with the iron plate is base to 10mm, resin is for covering the blackboard that the surface is crude.

Claims (1)

1. a blackboard is made of iron plate and dope layer, it is characterized in that said dope layer is the crude black resin coating in surface, and the roughmeter that surperficial crude degree is represented with profile arithmetic average error Ra is 5 ~ 50mm.
CN2010205438344U 2010-09-27 2010-09-27 Blackboard Expired - Fee Related CN201808345U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010205438344U CN201808345U (en) 2010-09-27 2010-09-27 Blackboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010205438344U CN201808345U (en) 2010-09-27 2010-09-27 Blackboard

Publications (1)

Publication Number Publication Date
CN201808345U true CN201808345U (en) 2011-04-27

Family

ID=43891289

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010205438344U Expired - Fee Related CN201808345U (en) 2010-09-27 2010-09-27 Blackboard

Country Status (1)

Country Link
CN (1) CN201808345U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108454275A (en) * 2014-07-29 2018-08-28 上海易教信息科技有限公司 Anti-dazzle black combining glass and its production method and intelligent blackboard
CN111761969A (en) * 2020-06-29 2020-10-13 吕梁学院 Classroom teaching auxiliary device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108454275A (en) * 2014-07-29 2018-08-28 上海易教信息科技有限公司 Anti-dazzle black combining glass and its production method and intelligent blackboard
CN111761969A (en) * 2020-06-29 2020-10-13 吕梁学院 Classroom teaching auxiliary device

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110427

Termination date: 20110927

C17 Cessation of patent right