JPH11291692A - Eraser - Google Patents
EraserInfo
- Publication number
- JPH11291692A JPH11291692A JP13252598A JP13252598A JPH11291692A JP H11291692 A JPH11291692 A JP H11291692A JP 13252598 A JP13252598 A JP 13252598A JP 13252598 A JP13252598 A JP 13252598A JP H11291692 A JPH11291692 A JP H11291692A
- Authority
- JP
- Japan
- Prior art keywords
- eraser
- starch
- pts
- water
- polyvinyl alcohol
- 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
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、澱粉、ポリビニルアル
コール、多価アルコールと水から成る混合原料を加熱、
加圧処理することにより得られるプラスチックゲルを基
材とする消しゴムに関するものである。BACKGROUND OF THE INVENTION The present invention relates to a method of heating a mixed raw material comprising starch, polyvinyl alcohol, polyhydric alcohol and water,
The present invention relates to an eraser based on a plastic gel obtained by a pressure treatment.
【０００２】[0002]
【従来の技術】従来用いられている消しゴムは、基材樹
脂と可塑剤と必要に応じて充填剤、安定剤、二次可塑剤
等を適宜混合したものを材料とし、これを加熱成形や押
出し、射出成形により得られている。基材樹脂としては
ポリ塩化ビニル樹脂が用いられており、このポリ塩化ビ
ニル系消しゴムは消去性能が優れていることから、以前
の天然ゴム系消しゴムからほとんど置き代わっている。2. Description of the Related Art A conventionally used eraser is a material obtained by appropriately mixing a base resin, a plasticizer, and, if necessary, a filler, a stabilizer, a secondary plasticizer, and the like. , Obtained by injection molding. A polyvinyl chloride resin is used as the base resin, and since the polyvinyl chloride-based eraser has excellent erasing performance, it almost replaces the previous natural rubber-based eraser.
【０００３】昨今、様々な環境汚染問題がクローズアッ
プされる中で、廃棄物を焼却処理する際に発生するダイ
オキシンにも注目が集まっている。この有毒物質は塩化
ビニル系樹脂が高温で燃焼する際に発生することが知ら
れており、ヨーロッパ等では塩化ビニル系樹脂の全廃運
動も行なわれている。この様な最近の情勢の中で、消し
ゴムにおいてもポリ塩化ビニル樹脂に代わる基材が、ま
た、子供達も手にすることの多いものだけに、誤って口
に入れてもよいぐらい、人体に対して安全なもので構成
された消しゴム組成物が望まれる。[0003] In recent years, as various environmental pollution problems are highlighted, dioxin generated when incinerating wastes has also attracted attention. It is known that this toxic substance is generated when the vinyl chloride resin is burned at a high temperature, and in Europe and the like, the vinyl chloride resin is completely abolished. Under such recent circumstances, the base material that can replace the polyvinyl chloride resin in the eraser is also used only for those that children often have, so that they can be accidentally put into the mouth, An eraser composition composed of a safe material is desired.
【０００４】[0004]
【発明が解決しようとする問題点】本発明は、従来の消
しゴムが持つ消去性能を有し、かつ、より人体に対して
安全なものを基材とする消しゴムを提供する点にある。SUMMARY OF THE INVENTION The object of the present invention is to provide an eraser which has the erasing performance of a conventional eraser and is made of a material which is safer for the human body.
【０００５】[0005]
【問題を解決するための手段】本発明の消しゴムは、澱
粉、ポリビニルアルコール、多価アルコールと水から成
る混合原料を加熱、加圧処理することにより得られるプ
ラスチックゲルを基材とすることを特徴とする。The eraser of the present invention is characterized in that a base material is a plastic gel obtained by heating and pressing a mixed raw material comprising starch, polyvinyl alcohol, polyhydric alcohol and water. And
【０００６】本発明において、澱粉とは馬鈴薯、コーン
スターチ、タピオカ、小麦、米、薩摩芋、サゴヤシ等か
ら得られる澱粉を使用する。ポリビニルアルコールは粉
体で澱粉とほぼ均一に混じり合うものを用いる。In the present invention, starch obtained from potato, corn starch, tapioca, wheat, rice, sweet potato, sago palm and the like is used. The polyvinyl alcohol used is a powder which is almost uniformly mixed with the starch.
【０００７】また多価アルコールは、グリセリン、ジグ
リセリン、ポリグリセリン、ソルビトール、プロピレン
グリコール、エチレングリコール、ジエチレングリコー
ル、ポリエチレングリコールなどまたはこれらの混合物
から選択できる。より好ましくは、人体に対して安全な
グリセリン、ソルビトール、プロピレングリコールが選
択される。The polyhydric alcohol can be selected from glycerin, diglycerin, polyglycerin, sorbitol, propylene glycol, ethylene glycol, diethylene glycol, polyethylene glycol and the like, or a mixture thereof. More preferably, glycerin, sorbitol, and propylene glycol that are safe for the human body are selected.
【０００８】本発明の消しゴムは、澱粉、ポリビニルア
ルコール、多価アルコールと水を所定の割合で添加し、
良く攪拌混合した原料を型に流し込み、加熱、加圧処理
することにより製造する。あるいは、同混合原料を押出
成形機や射出成形機に投入し、加熱、加圧処理するとい
った従来の消しゴムと同じ製造方法によって製造するこ
とができる。[0008] The eraser of the present invention is obtained by adding starch, polyvinyl alcohol, polyhydric alcohol and water at a predetermined ratio,
It is manufactured by pouring a well-mixed raw material into a mold and subjecting it to heat and pressure treatment. Alternatively, it can be manufactured by the same manufacturing method as that of a conventional eraser, in which the mixed raw material is put into an extrusion molding machine or an injection molding machine and subjected to heating and pressure treatment.
【０００９】澱粉、ポリビニルアルコール、多価アルコ
ールと水との混合割合は、澱粉１００重量部に対してポ
リビニルアルコール１０〜４０重量部、多価アルコール
３０〜６０重量部、水３０〜６０重量部であることが好
ましい。The mixing ratio of starch, polyvinyl alcohol, polyhydric alcohol and water is 10 to 40 parts by weight of polyvinyl alcohol, 30 to 60 parts by weight of polyhydric alcohol, and 30 to 60 parts by weight of water per 100 parts by weight of starch. Preferably, there is.
【００１０】加熱、加圧条件は、温度が１００〜２００
℃、好ましくは１２０〜１６０℃、圧力が５〜５０ｋｇ
／ｃｍ２、好ましくは３５〜４５ｋｇ／ｃｍ２で行な
う。The heating and pressurizing conditions are as follows.
° C, preferably 120-160 ° C, pressure 5-50kg
/ Cm 2 , preferably 35 to 45 kg / cm 2 .
【００１１】ここで、温度が１００℃未満、圧力が５ｋ
ｇ／ｃｍ２未満であれば、澱粉のゲル化が充分でなく好
ましくない。また、温度が２００℃を越えると澱粉が熱
分解を起こし、圧力も５０ｋｇ／ｃｍ２を越えるとこれ
を助長するため好ましくない。Here, the temperature is lower than 100 ° C. and the pressure is 5 k
If it is less than g / cm 2 , the gelatinization of starch is not sufficient, which is not preferable. On the other hand, if the temperature exceeds 200 ° C., the starch is thermally decomposed, and if the pressure exceeds 50 kg / cm 2 , it promotes this, which is not preferable.
【００１２】[0012]
【実施例】以下に本発明の一実施例を挙げて詳細に説明
するが、例示は単に説明用のもので、本発明の適用範囲
等を制限並びに限定するものではない。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to an embodiment, but the illustration is merely for explanation and does not limit or limit the scope of application of the present invention.
【００１３】馬鈴薯澱粉１００重量部、ポリビニルアル
コール２０重量部、グリセリン５０重量部と水５０重量
部を配合し、よく混合した。この混合原料を温度１２０
℃、圧力３０ｋｇ／ｃｍ２の条件で射出成形して消しゴ
ムを得た。100 parts by weight of potato starch, 20 parts by weight of polyvinyl alcohol, 50 parts by weight of glycerin and 50 parts by weight of water were mixed and mixed well. This mixed raw material is heated to a temperature of 120.
Injection molding was performed at 30 ° C. and a pressure of 30 kg / cm 2 to obtain an eraser.
【００１４】上記実施例で作成したものと市販の消しゴ
ム（ポリ塩化ビニル系）について、使用感、消字性能、
紙面の損傷を比較、評価した。その結果を表１に示す。The feeling of use, erasure performance, and the eraser prepared in the above-described embodiment and a commercially available eraser (polyvinyl chloride) were used.
Paper damage was compared and evaluated. Table 1 shows the results.
【００１５】[0015]
【表１】 [Table 1]
【００１６】[0016]
【発明の効果】以上、本発明の消しゴムは従来の消しゴ
ムが持つ消去性能、使用感を有し、かつ、より人体に対
して安全なものを基材とするものである。また、消し屑
も自然の腐敗により分解消滅し、焼却廃棄したとしても
環境汚染を引き起こしにくいにという利点がある。As described above, the eraser of the present invention has a base material which has the erasing performance and feeling of use of a conventional eraser and is more safe for the human body. In addition, there is an advantage that even the scraps can be eliminated by natural decay and hardly cause environmental pollution even if incinerated.
Claims (1)
コールと水から成る混合原料を加熱、加圧処理すること
により得られるプラスチックゲルを基材とする消しゴ
ム。1. An eraser based on a plastic gel obtained by subjecting a mixed raw material comprising starch, polyvinyl alcohol, polyhydric alcohol and water to heat and pressure treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13252598A JPH11291692A (en) | 1998-04-06 | 1998-04-06 | Eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13252598A JPH11291692A (en) | 1998-04-06 | 1998-04-06 | Eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11291692A true JPH11291692A (en) | 1999-10-26 |
Family
ID=15083346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13252598A Pending JPH11291692A (en) | 1998-04-06 | 1998-04-06 | Eraser |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11291692A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI395674B (en) * | 2008-12-03 | 2013-05-11 | Bandai Co | Eraser moulding toy and method of forming an eraser |
| KR101601867B1 (en) * | 2015-07-03 | 2016-03-14 | 박현 | Eraser without plasticizer using natural starch composition and production method thereof |
-
1998
- 1998-04-06 JP JP13252598A patent/JPH11291692A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI395674B (en) * | 2008-12-03 | 2013-05-11 | Bandai Co | Eraser moulding toy and method of forming an eraser |
| KR101601867B1 (en) * | 2015-07-03 | 2016-03-14 | 박현 | Eraser without plasticizer using natural starch composition and production method thereof |
| WO2017007116A1 (en) * | 2015-07-03 | 2017-01-12 | 박현 | Eraser using natural starch composition and containing no plasticizers, and manufacturing method therefor |
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