JPH0826268B2 - Manufacturing method of marking chalk - Google Patents
Manufacturing method of marking chalkInfo
- Publication number
- JPH0826268B2 JPH0826268B2 JP2079788A JP7978890A JPH0826268B2 JP H0826268 B2 JPH0826268 B2 JP H0826268B2 JP 2079788 A JP2079788 A JP 2079788A JP 7978890 A JP7978890 A JP 7978890A JP H0826268 B2 JPH0826268 B2 JP H0826268B2
- Authority
- JP
- Japan
- Prior art keywords
- chalk
- marking chalk
- manufacturing
- marking
- mixed
- 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 - Lifetime
Links
Landscapes
- Inks, Pencil-Leads, Or Crayons (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、光の反射光線により事故路面に描いたチョ
ークの痕跡を夜間撮影用に用いるマーキングチョークの
製造方法に関するものである。Description: TECHNICAL FIELD The present invention relates to a manufacturing method of a marking chalk in which traces of the chalk drawn on an accident road surface by reflected light rays are used for nighttime photographing.
従来のマーキングチョークはパラフィンワックス、石
油系オイル、酸化チタン、炭酸カルシウム等の混合資料
を加熱し、溶解後冷却して所定の成型器で成形したチョ
ークを用いて事故現場の状態を路面に描いている。In the conventional marking chalk, a mixture of paraffin wax, petroleum-based oil, titanium oxide, calcium carbonate, etc. is heated, melted and cooled, and the chalk at the accident site is drawn on the road surface using a chalk molded with a specified molding machine. There is.
また、教材に使用するチョークは焼石膏の粉末を棒状
に固めたもので、もっぱら黒板に字を書くために用いら
れている。In addition, the chalk used for teaching materials is a stick made of calcined gypsum powder and is used exclusively for writing letters on the blackboard.
従来のマーキングチョークの交通事故現場等における
路面表示用に使用した場合の反射効率は、5m未満の近距
離の撮影の場合には特に支障はないが、それ以上の距離
になると、反射効率が悪いので路面に表示した線や記号
が実況見分等の写真に写り難いほか、目視状況において
も確実に見にくい等の問題点があった。The reflection efficiency of the conventional marking chalk when used for road surface display at a traffic accident site etc. is not a problem when shooting at a short distance of less than 5 m, but at a distance longer than that, the reflection efficiency is poor. As a result, the lines and symbols displayed on the road surface were difficult to see in photographs such as the live commentary, and it was difficult to see even under visual conditions.
また黒板用のチョークは黒板に文字図形等を描くため
の石膏より成るもので、警察等の事故現場の路面に表示
するのには不適切である。Moreover, the chalk for the blackboard is made of gypsum for drawing characters and figures on the blackboard and is not suitable for being displayed on the road surface at the scene of an accident such as police.
そこで、本発明は、従来公知公用のマーキングチョー
ク等の資料内に球状硝子微粒子を混合して、反射効率を
高め、路面に表示した線や記号が鮮明に反射して不便を
解消することが容易であり、特に夜間における事故現場
撮影について機能を発揮するマーキングチョークの製造
方法を提供することを目的としている。Therefore, the present invention mixes spherical glass fine particles into a material such as a publicly known publicly known marking chalk to enhance the reflection efficiency, and it is easy to eliminate the inconvenience that lines and symbols displayed on the road surface are clearly reflected. In particular, it is an object of the present invention to provide a manufacturing method of a marking chalk that exerts a function particularly for photographing an accident scene at night.
上記目的を達成するために、本発明のマーキングチョ
ークの製造方法は、従来周知の手段としてパラフィンワ
ックス、石油系オイル、酸化チタン、炭酸カルシウム等
の混合資料を撹拌混合して加熱溶解した後に球状硝子微
粒子を添加撹拌し、前記混合資料内に該硝子微粒子を均
等に混在させてこの練成物を任意形状の成型器に注入し
て冷却固形化させた製造方法である。In order to achieve the above-mentioned object, the method for producing the marking chalk of the present invention comprises a well-known means such as paraffin wax, petroleum-based oil, titanium oxide, calcium carbonate, etc., which are mixed by stirring to heat and melt the spherical glass. It is a manufacturing method in which fine particles are added and stirred, and the fine glass particles are mixed evenly in the mixed material, and this kneaded product is poured into a molding machine of an arbitrary shape to be cooled and solidified.
上記のように構成されたマーキングチョークを使用し
て現在使用している交通事故現場等における路面表示用
としてその反射効率について、各種発光資料を添加して
得たる試作品について実験の結果次の通りであった。Regarding the reflection efficiency of the marking chalk configured as described above for road surface display at the current traffic accident site, etc., about the prototype obtained by adding various luminous materials, the results of the experiment are as follows. Met.
上述のように従来のマーキングチョークに対して夜間
撮影する場合は試験データーでは5mの範囲の距離で視認
性が認められるけれども、現在警察署の交通課事故処理
係においてはＣ欄における「マーキングチョーク」1:
「ガラス粒子」２の混合割合によるものがもっとも好ま
しい。 As mentioned above, when shooting at night with the conventional marking chalk, the visibility is recognized in the range of 5 m in the test data, but at the present time, in the accident handling section of the traffic department of the police station, "Marking chalk" in column C 1:
Most preferable is a mixture ratio of “glass particles” 2.
実施例 本発明の実施例を説明すると、先づ第１工程としてパ
ラフィンワックス約60％、石油系オイル（硬化油）約３
％、酸化チタン（チタン白）約７％、炭酸カルシュウム
約30％を原材料として混合して約100゜前後にて加熱溶
解して撹拌により均一に混合する。EXAMPLE An example of the present invention will be described. First, as the first step, about 60% of paraffin wax and about 3 parts of petroleum oil (hardened oil).
%, Titanium oxide (titanium white) about 7%, and calcium carbonate about 30% are mixed as raw materials, and they are heated and dissolved at about 100 ° and mixed uniformly by stirring.
この場合のマーキングチョークの混合資料を１とした
場合に球状硝子微粒子２の割合を以って、原材料の溶解
中に添加し、撹拌混合し加工容易なる程度の温度時に成
型器内に入れて約30分〜60分程度冷却（常温）して固形
化させるものである。In this case, assuming that the mixing material of the marking chalk is 1, the spherical glass fine particles 2 are added during the melting of the raw materials, and the mixture is stirred and mixed into the molding machine at a temperature at which processing is easy. It is solidified by cooling (normal temperature) for about 30 to 60 minutes.
また、従来のマーキングチョークの資料にガラス粒子
を混入したものは長さは235mmとし、直径40mmのものを
製作したものが好ましいが必ずしも長さ径には制限され
ない。Further, it is preferable that the length of the conventional marking chalk material mixed with glass particles is 235 mm and the diameter of 40 mm is manufactured, but the length is not necessarily limited.
本発明は以上のように形成されているので以下記載さ
れるような効果を奏する。Since the present invention is formed as described above, it has the following effects.
マーキングチョークに球状硝子微粒子を混合して形成
されたチョークの反射効率を高め路面表示した線や記号
を鮮明に反射することにより特に夜間の目視効果が良好
で、実況見分の写真写りも良好であって、現場の実際を
的確に把握することのできる特異性がある。By enhancing the reflection efficiency of the chalk formed by mixing spherical glass particles with the marking chalk and clearly reflecting the lines and symbols displayed on the road surface, the visual effect at night is particularly good, and the picture taken in the live condition is also good. Therefore, it has the peculiarity of being able to accurately grasp the actual situation at the site.
Claims (1)
チタン・炭酸カルシウム等の混合資料を加熱し溶解して
製造しているマーキングチョークにおいて、球状硝子微
粒子を添加し、撹拌混合冷却させて任意形状に固形する
ことを特徴とするマーキングチョークの製造方法1. In a marking chalk manufactured by heating and melting a mixed material such as paraffin wax, petroleum oil, titanium oxide, calcium carbonate, spherical glass fine particles are added, and the mixture is stirred, mixed and cooled to have an arbitrary shape. Manufacturing method of marking chalk characterized by solidification
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2079788A JPH0826268B2 (en) | 1990-03-27 | 1990-03-27 | Manufacturing method of marking chalk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2079788A JPH0826268B2 (en) | 1990-03-27 | 1990-03-27 | Manufacturing method of marking chalk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03277594A JPH03277594A (en) | 1991-12-09 |
| JPH0826268B2 true JPH0826268B2 (en) | 1996-03-13 |
Family
ID=13699955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2079788A Expired - Lifetime JPH0826268B2 (en) | 1990-03-27 | 1990-03-27 | Manufacturing method of marking chalk |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0826268B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5580370B2 (en) * | 2012-07-24 | 2014-08-27 | 株式会社小松プロセス | Retroreflective solid marking material manufacturing method, retroreflective solid marking material, and writing article |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58134166A (en) * | 1982-02-03 | 1983-08-10 | Takashi Sekiya | Brilliant recording material |
-
1990
- 1990-03-27 JP JP2079788A patent/JPH0826268B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03277594A (en) | 1991-12-09 |
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