JP2004042321A - Kneading eraser - Google Patents
Kneading eraser Download PDFInfo
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- JP2004042321A JP2004042321A JP2002200169A JP2002200169A JP2004042321A JP 2004042321 A JP2004042321 A JP 2004042321A JP 2002200169 A JP2002200169 A JP 2002200169A JP 2002200169 A JP2002200169 A JP 2002200169A JP 2004042321 A JP2004042321 A JP 2004042321A
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- kneading
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- hollow microspheres
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Abstract
Description
【0001】
【発明の属する技術分野】
本発明は練り消しに関し、更に詳しくは、軽量で、練り易く、且つソフトで練り心地の良好な練り消しに関する。
【0002】
【従来の技術】
従来、練り消しは練ったり、引き伸ばしたりして造形を楽しむことを主たる目的とするものであるが、今日、その興趣性を高めるために、芳香や、各種果物や食物の香りを発するもの、練ったり、引き伸ばしたりしているうちに色が変色するもの、等が実用化されている。
【0003】
しかしながら、練り消しは主として年少の子供に向けられているにも拘らず、軽量性や練り易さ、練り心地、更には、使い方の多様性化については、これまで殆ど注目されていないのが実情である。
【0004】
【発明が解決しようとする課題】
本発明は、かかる実情に鑑み、軽量で、練り易く、且つ練り心地が改善され、多様な使い方の可能な練り消しを提供するものである。
【0005】
【課題を解決するための手段】
本発明者らは上記課題を解決するべく鋭意研究の結果、練り消し基材に、特定の中空微小球を配合することにより、所期の目的が達成されることを見い出し、本発明に到達した。
【0006】
即ち、本発明は粘弾性基材に、熱可塑性ポリマーの表面を不活性無機粉体でコーティングしたハイブリッド中空微小球を配合してなることを特徴とする練り消しを内容とする(請求項1)。
【0007】
好ましい態様としては、上記ハイブリッド中空微小球の配合量が粘弾性基材100重量部に対し10〜300重量部である練り消しである(請求項2)。
【0008】
より好ましい態様としては、上記ハイブリッド中空微小球の配合量が粘弾性基材100重量部に対し10〜250重量部である練り消しである(請求項3)。
【0009】
【作用】
本発明の練り消しは、熱可塑性ポリマーの表面を不活性無機粉体でコーティングしたハイブリッド中空微小球を配合したので、軽量化されるとともに、ソフトで練り易さ、練り心地に優れ、更には、従来の使い方の練り、引き伸ばしの他に、様々な使い方が可能となる、等多くの特徴を有する。
【0010】
例えば、軽く、ふわふわしたソフトな手触り感であるので、手の小さい年少の子供や手の力の弱い老人でも楽しむことができ、また軽く、ふわふわした感じで衝撃吸収力が強いので投げつけた時の危険性も小さい。また、水に浮く練り消しが得られるので、所望のキャラクターや動物の形に造形した後、水槽や浴槽に浮かせて楽しんだり、軽い練り消しと従来の重い練り消しとを混ぜ合わせ、両者の混合割合と沈み具合(又は浮き具合)を体感、学習する知育玩具としても利用できる。
【0011】
更に、軽量化されているので、体積当りの単価が安くなり、同一体積当りの輸送単価も安くなり、また、半製品や製品の持ち運びが容易である。
【0012】
【発明の実施の形態】
本発明に用いられる粘弾性基材としては、ゴム、樹脂、エラストマー等の粘弾性を有する物質が用いられる。
【0013】
ゴム系基材としては、例えば、IIR(ブチルゴム)、IR(イソプレンゴム)、SBR(スチレン−ブタジエンゴム)、BR(ブタジエンゴム)、EPM(エチレンプロピレンゴム)、EPDM(エチレンプロピレン三元共重合体)、アクリルゴム、ポリイソブチレン、NR(天然ゴム)が挙げられ、これらは単独でもよいが、好ましくは2種以上組み合わせて用いられる。更に、練り消しの機能を損なわない範囲で、スチレン系樹脂、オレフィン系樹脂、エチレン−酢酸ビニル系樹脂、塩化ビニル系樹脂等の他の基材と組み合わせても差し支えない。
【0014】
本発明に用いられる、熱可塑性ポリマーの表面を不活性無機粉体でコーティングしたハイブリッド中空微小球としては、例えば、ポリアクリロニトリルを主成分とする高分子中空微小球体の表面が、炭酸カルシウム、タルク、酸化チタン等の粉体でコーティングされたものが市販され、具体的には、松本油脂製薬株式会社製のマイクロスフェアーMFLシリーズ「100CA」、「80CA」、「80GCA」、「100SCA」等が挙げられる。これらは単独で又は必要に応じ2種以上組み合わせて用いられる。
【0015】
上記ハイブリッド中空微小球の配合量は、粘弾性基材100重量部に対し10〜300重量部が好適である。ハイブリッド中空微小球の配合量が10重量部未満では本発明の効果が不十分となり、一方、300重量部を越えると練り時間が長くなる傾向があり、また、そのためにハイブリッドバルーンが潰れるおそれがある。従って、より好ましくは、粘弾性基材100重量部に対し10〜250重量部である。
尚、充填剤を配合しない場合は、練りや引き伸ばし性の面からは30重量部以上使用するのが好ましい。
【0016】
本発明の練り消しは、更に、必要に応じて、プロセス油、流動パラフィン、菜種油、綿実油等の軟化剤、重質炭酸カルシウム、軽質炭酸カルシウム、シリカ、珪藻土、酸化マグネシウム、タルク、セリサイト、石英粉末、モンモリロナイト、ホタテ、カキ、しじみなどの貝殻粉末などの充填剤、有機中空粒子、無機中空粒子及び有機・無機顔料、染料などの着色材、香料、安定剤、滑剤、酸化防止剤、紫外線吸収剤、防カビ剤などの他の添加物も適宜任意に使用することも可能である。
【0017】
上記の如き成分からなる練り消しは、混練され、プレス成形、射出成形、押出成形等により成形され、所定の寸法に裁断されて製品とされる。
【0018】
【実施例】
以下、実施例及び比較例に基づいて本発明を更に詳細に説明するが、これらは本発明の範囲を何ら制限するものではない。
【0019】
以下の実施例及び比較例で用いた材料を表1に示す。尚、以下の記載において、「部」は特に断らない限り「重量部」を表す。
【0020】
【表1】
【0021】
実施例1〜4
表2に示す配合からなる樹脂組成物を混練した後、所定の寸法の金型にて押出成形により練り消し試料を得た。
各試料について、軽量性及び加工性(練り具合、引き伸ばし具合、手触り)を下記の方法で測定、評価した。結果を表2に示す。
【0022】
軽量性
練り消し試料の重さを体積で除した値で表した。
【0023】
加工性
練り消し試料を練ったり、引き伸ばしたりした時のべたつき、手触りを下記の基準で評価した。
◎:ブリード感及びべたつき感が全くなく手触りも良好である。
○:ブリード感及びべたつき感がなく、手触りも良好である。
□:ブリード感はないが、べたつき感があり、手触りも不良である。
△:ブリード感及びべたつき感がないが、時間と共に生地が変形する。
×:べたつき感があり、生地も時間と共に変形する。
【0024】
【表2】
【0025】
比較例1〜4
ハイブリッド中空微小球「MFL−100SCA」を使用しなかった他は、実施例1〜4と同様に操作し、得られた練り消し試料の特性を測定、評価した。結果を表3に示す。
【0026】
【表3】
【0027】
実施例5〜10
表4に示す配合に変更した以外は、実施例1〜4と同様に操作し、得られた練り消し試料の特性を測定、評価した。結果を表4に示す。
【0028】
【表4】
【0029】
比較例5〜10
ハイブリッド中空微小球「MFL−100SCA」を使用しなかった他は、実施例5〜10と同様に操作し、得られた練り消し試料の特性を測定、評価した。結果を表5に示す。
【0030】
【表5】
【0031】
実施例11〜16、比較例11〜15
表6に示す配合に変更した以外は、実施例1〜4と同様に操作し、得られた練り消し試料の特性を測定、評価した。結果を表6に示す。尚、実施例16では、ハイブリッド中空微小球が多いため、混練中に一部が壊れ若干重くなっている。
【0032】
【表6】
【0033】
上記表2〜表6から、熱可塑性ポリマーの表面を不活性無機粉体でコーティングしたハイブリッド中空微小球を配合することにより、軽量化されるとともに、加工性、即ち、練り易く、ブリード感及びべたつき感がなく、ソフトで練り心地の良好な練り消しが得られることが分かる。
【0034】
また、表6から明かなように、上記ハイブリッド中空微小球の代わりに、架橋スチレン−アクリル中空粒子〔JSR SX866(A)〕を用いた場合は、比較例14、15に示すように、べたつき感があり、手触りも不良で、また軽量化の効果も小さい。更に、有機系中空球体(マイクロスフェアーF−80ED)を用いた場合は、比較例11〜13に示すように、軽量化は十分であるが、配合及び混練時に粉が舞い上がり、取り扱い性及び作業環境上問題がある。
【0035】
実施例17〜22
表7に示すように、軽質炭酸カルシウムを使用しなかった他は実施例1〜4と同様に操作し、得られた練り消し試料の特性を測定、評価した。結果を表7に示す。
【0036】
【表7】
【0037】
上記表7から、充填剤を使用しない場合でも、加工性の良好な練り消しが得られ、この練り消しは充填剤を含有していないため、驚異的に軽量化されていることが分かる。
【0038】
【発明の効果】
叙上のとおり、本発明の、熱可塑性ポリマーの表面を不活性無機粉体でコーティングしたハイブリッド中空微小球を配合した練り消しは、軽量で、且つソフトで練り易さ、練り心地に優れている。
【0039】
また、本発明の練り消しは、軽量でソフトな手触りを有するので、年少の子供や老人でも扱い易く、また非常に軽いので危険も少ない。更に、水に浮かせることも可能で、本発明の軽い練り消しと従来の重い練り消しとを混ぜ合わせて、沈み具合(又は浮き具合)を体感、学習する知育玩具としても利用可能である。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a kneading machine, and more particularly, to a kneading machine that is lightweight, easy to knead, soft and has good kneading comfort.
[0002]
[Prior art]
Conventionally, kneading has been mainly intended to enjoy shaping by kneading or stretching, but today, in order to enhance its amusement, fragrances, fragrances of various fruits and foods, kneading and kneading are used. Those that change color while being stretched or stretched have been put to practical use.
[0003]
However, despite the fact that kneading is mainly aimed at younger children, little attention has been paid to lightweightness, ease of kneading, kneading comfort, and diversification of usage. It is.
[0004]
[Problems to be solved by the invention]
In view of the above circumstances, the present invention provides a kneading eraser that is lightweight, easy to knead, has improved kneading comfort, and can be used in various ways.
[0005]
[Means for Solving the Problems]
The present inventors have conducted intensive studies to solve the above problems, and found that the intended purpose was achieved by blending specific hollow microspheres into the kneaded base material, and reached the present invention. .
[0006]
That is, the present invention provides a kneading method characterized in that hybrid hollow microspheres obtained by coating the surface of a thermoplastic polymer with an inert inorganic powder are blended with a viscoelastic substrate (claim 1). .
[0007]
In a preferred embodiment, the blending of the hybrid hollow microspheres is 10 to 300 parts by weight with respect to 100 parts by weight of the viscoelastic substrate (claim 2).
[0008]
In a more preferred embodiment, the blending of the hybrid hollow microspheres is 10 to 250 parts by weight with respect to 100 parts by weight of the viscoelastic substrate (claim 3).
[0009]
[Action]
The kneading of the present invention is a blend of hybrid hollow microspheres coated on the surface of a thermoplastic polymer with an inert inorganic powder, so that while reducing the weight, soft and easy to knead, excellent kneading comfort, further, It has many features such as being able to be used in various ways, in addition to kneading and stretching of conventional usage.
[0010]
For example, it is light, fluffy and soft, so it can be enjoyed by young children with small hands and old people with weak hands, and when thrown because it is light, fluffy and has a strong shock absorption capacity The danger is small. In addition, since it can be removed from the water, it can be shaped into a desired character or animal, and then floated in a water tub or bathtub to enjoy it. It can also be used as an educational toy to experience and learn the ratio and the degree of sinking (or the degree of floating).
[0011]
Further, since the weight is reduced, the unit price per volume is reduced, the unit price per unit volume is reduced, and semi-finished products and products can be easily carried.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
As the viscoelastic base material used in the present invention, a viscoelastic substance such as rubber, resin, or elastomer is used.
[0013]
Examples of the rubber base material include IIR (butyl rubber), IR (isoprene rubber), SBR (styrene-butadiene rubber), BR (butadiene rubber), EPM (ethylene propylene rubber), and EPDM (ethylene propylene terpolymer). ), Acrylic rubber, polyisobutylene, and NR (natural rubber). These may be used alone, but preferably used in combination of two or more. Further, as long as the function of kneading is not impaired, it may be combined with another base material such as a styrene resin, an olefin resin, an ethylene-vinyl acetate resin or a vinyl chloride resin.
[0014]
As the hybrid hollow microspheres coated on the surface of the thermoplastic polymer with the inert inorganic powder used in the present invention, for example, the surface of the polymer hollow microspheres mainly composed of polyacrylonitrile is calcium carbonate, talc, Those coated with a powder of titanium oxide or the like are commercially available, and specifically, Microsphere MFL series “100CA”, “80CA”, “80GCA”, “100SCA”, etc., manufactured by Matsumoto Yushi Seiyaku Co., Ltd. Can be These may be used alone or in combination of two or more as necessary.
[0015]
The amount of the hybrid hollow microspheres is preferably 10 to 300 parts by weight based on 100 parts by weight of the viscoelastic base material. If the blending amount of the hybrid hollow microspheres is less than 10 parts by weight, the effect of the present invention will be insufficient. On the other hand, if it exceeds 300 parts by weight, the kneading time tends to be long, and the hybrid balloon may be crushed. . Therefore, it is more preferably 10 to 250 parts by weight based on 100 parts by weight of the viscoelastic base material.
When a filler is not blended, it is preferable to use 30 parts by weight or more from the viewpoint of kneading and stretching properties.
[0016]
The kneading of the present invention further comprises, if necessary, a process oil, a liquid paraffin, a rapeseed oil, a softener such as cottonseed oil, heavy calcium carbonate, light calcium carbonate, silica, diatomaceous earth, magnesium oxide, talc, sericite, quartz. Fillers such as powders, shell powders such as montmorillonite, scallops, oysters, sea cucumber, organic hollow particles, inorganic hollow particles and coloring materials such as organic and inorganic pigments, dyes, fragrances, stabilizers, lubricants, antioxidants, and ultraviolet absorption Other additives such as an agent and a fungicide can also be used as appropriate.
[0017]
The kneading made of the above components is kneaded, molded by press molding, injection molding, extrusion molding or the like, and cut into predetermined dimensions to obtain a product.
[0018]
【Example】
Hereinafter, the present invention will be described in more detail based on Examples and Comparative Examples, but these do not limit the scope of the present invention at all.
[0019]
Table 1 shows materials used in the following examples and comparative examples. In the following description, “parts” means “parts by weight” unless otherwise specified.
[0020]
[Table 1]
[0021]
Examples 1-4
After kneading the resin composition having the composition shown in Table 2, a kneaded sample was obtained by extrusion molding using a mold having a predetermined size.
For each sample, lightness and workability (kneading, stretching, feel) were measured and evaluated by the following methods. Table 2 shows the results.
[0022]
It was expressed as a value obtained by dividing the weight of the light weight kneaded sample by the volume.
[0023]
The stickiness and feel when the kneaded or stretched sample was kneaded or stretched were evaluated according to the following criteria.
:: There is no bleeding feeling and no sticky feeling, and the feel is good.
:: No bleeding or stickiness, and good feel.
□: No bleeding feeling, but sticky feeling and poor touch.
Δ: There is no bleeding or sticky feeling, but the fabric is deformed with time.
×: There is a sticky feeling, and the fabric is deformed with time.
[0024]
[Table 2]
[0025]
Comparative Examples 1-4
Except not using the hybrid hollow microspheres “MFL-100SCA”, the same operation as in Examples 1 to 4 was performed, and the characteristics of the obtained milled sample were measured and evaluated. Table 3 shows the results.
[0026]
[Table 3]
[0027]
Examples 5 to 10
The same operation as in Examples 1 to 4 was carried out except that the composition was changed to the composition shown in Table 4, and the characteristics of the obtained kneaded sample were measured and evaluated. Table 4 shows the results.
[0028]
[Table 4]
[0029]
Comparative Examples 5 to 10
The operations were performed in the same manner as in Examples 5 to 10 except that the hybrid hollow microspheres “MFL-100SCA” were not used, and the characteristics of the obtained milled sample were measured and evaluated. Table 5 shows the results.
[0030]
[Table 5]
[0031]
Examples 11 to 16, Comparative Examples 11 to 15
The same operation as in Examples 1 to 4 was performed except that the composition was changed to the composition shown in Table 6, and the characteristics of the obtained kneaded sample were measured and evaluated. Table 6 shows the results. In addition, in Example 16, since there were many hybrid hollow microspheres, a part thereof was broken during the kneading and the weight became slightly heavy.
[0032]
[Table 6]
[0033]
From the above Tables 2 to 6, from the fact that the hybrid hollow microspheres coated with an inert inorganic powder on the surface of the thermoplastic polymer are blended, the weight is reduced and the workability, that is, easy to knead, bleeding feeling and stickiness are obtained. It can be seen that there is no feeling, and soft kneading with good kneading comfort can be obtained.
[0034]
Further, as is clear from Table 6, when the crosslinked styrene-acrylic hollow particles [JSR SX866 (A)] were used instead of the hybrid hollow microspheres, as shown in Comparative Examples 14 and 15, a sticky feeling was obtained. And the touch is poor, and the effect of weight reduction is small. Furthermore, when organic hollow spheres (Microsphere F-80ED) are used, as shown in Comparative Examples 11 to 13, the weight is sufficiently reduced, but the powder flies up during blending and kneading, and handling and workability are improved. There is an environmental problem.
[0035]
Examples 17 to 22
As shown in Table 7, the same operation as in Examples 1 to 4 was carried out except that light calcium carbonate was not used, and the characteristics of the obtained kneaded sample were measured and evaluated. Table 7 shows the results.
[0036]
[Table 7]
[0037]
From Table 7 above, it can be seen that even when no filler is used, good kneading with good processability is obtained, and since this kneading does not contain a filler, the weight is surprisingly reduced.
[0038]
【The invention's effect】
As described above, the kneading of the present invention, in which the hybrid hollow microspheres coated with the inert inorganic powder on the surface of the thermoplastic polymer are blended, is lightweight, soft, easy to knead, and excellent in kneading comfort. .
[0039]
Further, the kneading device of the present invention has a light and soft touch, so that it can be easily handled even by young children and old people, and is very light, so that there is little danger. Furthermore, it can be floated on water, and it can be used as an educational toy that combines the light kneading of the present invention with the conventional heavy kneading to sense and learn the degree of sinking (or floating).
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002200169A JP3993798B2 (en) | 2002-07-09 | 2002-07-09 | Kneading |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002200169A JP3993798B2 (en) | 2002-07-09 | 2002-07-09 | Kneading |
Publications (2)
Publication Number | Publication Date |
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JP2004042321A true JP2004042321A (en) | 2004-02-12 |
JP3993798B2 JP3993798B2 (en) | 2007-10-17 |
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Application Number | Title | Priority Date | Filing Date |
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JP2002200169A Expired - Fee Related JP3993798B2 (en) | 2002-07-09 | 2002-07-09 | Kneading |
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JP (1) | JP3993798B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009149915A (en) * | 2009-04-08 | 2009-07-09 | Seed:Kk | Elastomer composition, process for its production, and eraser using the composition |
-
2002
- 2002-07-09 JP JP2002200169A patent/JP3993798B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009149915A (en) * | 2009-04-08 | 2009-07-09 | Seed:Kk | Elastomer composition, process for its production, and eraser using the composition |
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JP3993798B2 (en) | 2007-10-17 |
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