JPS60260454A - Chalk and manufacture - Google Patents

Chalk and manufacture

Info

Publication number
JPS60260454A
JPS60260454A JP11093684A JP11093684A JPS60260454A JP S60260454 A JPS60260454 A JP S60260454A JP 11093684 A JP11093684 A JP 11093684A JP 11093684 A JP11093684 A JP 11093684A JP S60260454 A JPS60260454 A JP S60260454A
Authority
JP
Japan
Prior art keywords
chalk
powder
manufacture
application
present
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.)
Pending
Application number
JP11093684A
Other languages
Japanese (ja)
Inventor
塩津　静也
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP11093684A priority Critical patent/JPS60260454A/en
Publication of JPS60260454A publication Critical patent/JPS60260454A/en
Pending legal-status Critical Current

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  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は黒板に書くのに用いろｎる白墨またはその製法
に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to chalk used for writing on a blackboard and a method for producing the same.

（従来の技術） 従来から白墨は、焼セッコウ筐たは白亜の粉末を水でこ
ねて棒状に同化、乾燥したもので、顔料を混ぜて着色し
たものもある。(Conventional technology) Chalk has traditionally been made by kneading calcined gypsum powder or chalk powder with water, assimilating it into a stick shape, and drying it, and it has also been colored by mixing it with pigments.

（発明が！４決しようとする問題点ン しかし従来の白墨は、黒板に誉く字を消す時に白墨の粉
末が飛散して空気に浮遊し、被服を汚しｙ’ｃＤ、ｕ＋
吸と共に人体に吸引されることが多く、・教室の環境を
悪化させている。(The invention is trying to solve 4 problems.) However, when using conventional chalk, when erasing letters on a blackboard, chalk powder scatters and becomes airborne, staining clothing.
It is often inhaled into the human body when inhaled, causing a deterioration of the classroom environment.

そこで本発明は粉末が飛散しない白墨及びその製法’ｋ
Ａ供することｔ目的とするものである。Therefore, the present invention provides chalk that does not scatter powder and its manufacturing method.
The purpose is to provide.

２（問題点を解決するための手段） 本発明の特徴は、生理的にほとんど無害であると知られ
ているカルボキシメチルセルロースナトリウム（以下Ｃ
ＭＣナトリクムという）を含有させたところにある。2 (Means for Solving the Problems) The present invention is characterized by the use of carboxymethyl cellulose sodium (hereinafter referred to as C), which is known to be physiologically almost harmless.
This is because it contains MC sodium cum).

本発明の他の％敵は、ＣＭＣナトリウムを含有する水で
脱セツコワまたは白亜の粉本ｔこねて固化乾燥さぜると
ころにちる。Another advantage of the present invention is to knead the powder or chalk powder with water containing sodium CMC and mix it to solidify and dry.

（作用う ＣＭＣナトリウムを含有する白墨で、黒板に字など書い
たり消したすしても、白墨の粉末は直ちに空気中の水分
を吸収し粘性を帯び、そのまま黒板の面上ｔすべり落ち
、そのため空気中に浮遊しない、。(Even when writing or erasing characters on a blackboard with chalk containing CMC sodium, the chalk powder immediately absorbs moisture in the air, becomes viscous, and slides down on the blackboard surface, causing air to escape.) It doesn't float inside.

（夾施例） 水ａｏｏｃｃの中にＣｓｆｉ　Ｃナトリウム４ｇ（中ス
プーン一杯）を加えて加熱し、濾過し九水溶液と焼セツ
コウの粉末とｔ混練し、加熱乾燥した。(Example) 4 g (one medium spoonful) of Csfi C sodium was added to water aoocc, heated, filtered, kneaded with the nine-aqueous solution and the powder of yakiniku powder, and heated and dried.

（本発明の効果） 本発明による白墨の粉末は空気中全浮遊しないため教室
などの環境保持に極めて有効である。(Effects of the present invention) The chalk powder according to the present invention does not float in the air at all, so it is extremely effective for maintaining the environment of classrooms and the like.

以上 特許出願人　堰　幇　靜　也 同　上　松　原　端 手続補正書（自発） 昭和５９年１２　Ｊ’ｌ　１２１１ 特許庁長官　、３−＋’ｇ　半　殿 １事件の表示 昭和５９年特許願第１１０９３６号 ２発明の名称 白墨及びその製法 ３補正をする者 事件との関係　特許出願人 三重県尾鷲市栄町７番２５月 塩　津　静　也　（外１名） ４代　理　人 （１）願書の特許法第３８条ただし書の規定による特許
出願の表示の欄。Applicants for the above patents: Seiya Dokami, Matsuhara, End-procedure amendment (spontaneous), December 1980, J'l 1211 Commissioner of the Japan Patent Office, 1988 Patent Application No. 110936 2. Name of the invention in chalk and its manufacturing method 3. Relationship with the person making the amendment Patent applicant Shizuya Shiotsu, 7-25 Sakaemachi, Owase City, Mie Prefecture (1 other person) 4. Agent (1) Patent Law No. 1 of the application Column for indication of patent application pursuant to the proviso to Article 38.

（２）願書の特許請求の範囲に記載された発明の数の欄
。(2) A column for the number of inventions stated in the claims of the application.

６補正の内容 （１）願１に特許法第６８条ただし書の規定による特許
出願との記載を加入する。6. Contents of amendment (1) Addition of the statement that Application 1 is a patent application pursuant to the proviso to Article 68 of the Patent Act.

（２）願書の発明の名称の欄と発明者の欄との間に特許
請求の範囲に記載された発明の数２を加入する。(2) Add the number 2 of the inventions stated in the claims between the title of the invention column and the inventor column of the application.

Claims (1)

【特許請求の範囲】 （υ　カルボキシメチルセルロースナトリウム全含有す
ることｔ−特徴とする白墨。 （２）焼セツコウまたは白亜の粉末ｔ、カルボキシメチ
ルセルロースナトリウムを加え友水でこね、棒状に固化
、乾燥したこと′ｆｔ１ｌ＃徴とする白墨の製法。[Scope of Claims] (υ Chalk characterized by containing all sodium carboxymethyl cellulose. (2) Powder of charcoal or chalk, sodium carboxymethyl cellulose added, kneaded with tofu water, solidified into a rod shape, and dried. How to make chalk with 'ft1l# characteristics.
JP11093684A 1984-06-01 1984-06-01 Chalk and manufacture Pending JPS60260454A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11093684A JPS60260454A (en) 1984-06-01 1984-06-01 Chalk and manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11093684A JPS60260454A (en) 1984-06-01 1984-06-01 Chalk and manufacture

Publications (1)

Publication Number Publication Date
JPS60260454A true JPS60260454A (en) 1985-12-23

Family

ID=14548339

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11093684A Pending JPS60260454A (en) 1984-06-01 1984-06-01 Chalk and manufacture

Country Status (1)

Country Link
JP (1) JPS60260454A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112793342A (en) * 2020-12-31 2021-05-14 张海星 Chalk reproducing machine capable of automatically erasing blackboard

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55236A (en) * 1978-06-19 1980-01-05 Kanden Hankiyuu Shoji Kk Extruding molding method of dihydric gypsum
JPS5650151A (en) * 1979-10-01 1981-05-07 Idemitsu Kosan Co Sound absorbing gypsum formed body

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55236A (en) * 1978-06-19 1980-01-05 Kanden Hankiyuu Shoji Kk Extruding molding method of dihydric gypsum
JPS5650151A (en) * 1979-10-01 1981-05-07 Idemitsu Kosan Co Sound absorbing gypsum formed body

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112793342A (en) * 2020-12-31 2021-05-14 张海星 Chalk reproducing machine capable of automatically erasing blackboard
CN112793342B (en) * 2020-12-31 2022-06-03 西藏米优科技有限公司 Chalk reproducing machine capable of automatically wiping blackboard

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