JP2019205801A - Sole material - Google Patents

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JP2019205801A
JP2019205801A JP2018104020A JP2018104020A JP2019205801A JP 2019205801 A JP2019205801 A JP 2019205801A JP 2018104020 A JP2018104020 A JP 2018104020A JP 2018104020 A JP2018104020 A JP 2018104020A JP 2019205801 A JP2019205801 A JP 2019205801A
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protrusion
shoe sole
short fibers
unvulcanized rubber
rubber fabric
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JP7144830B2 (en
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博 金丸
Hiroshi Kanamaru
博 金丸
浩一郎 江西
Koichiro Enishi
浩一郎 江西
謙祐 岡
Kensuke Oka
謙祐 岡
田中春夫
Haruo Tanaka
春夫 田中
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Asahi Shoes Ltd
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Asahi Shoes Ltd
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Abstract

To provide a sole material enabling comfortable walking on an ice surface or on a snowy cold-district by improving antislip property of a sole.SOLUTION: When an unvulcanized rubber fabric having short fibers mixed therein is rolled by a roller into a sheet shape and properly cut and the obtained unvulcanized rubber fabric pieces 11 are arranged into a sole forming mold 3 having many individual projections 40, arrangement is performed so that the orientation of the short fibers becomes approximately parallel to a width direction of the projections. Then, the unvulcanized rubber fabric pieces are removed from the sole forming mold 3 molded by heat pressurization, and second projections 43 are removed by a buff to thereby expose the short fibers vertically onto a first projection bottom surface.SELECTED DRAWING: Figure 3

Description

本発明は靴底の耐滑性向上を目的とした靴底材の製造方法に関する発明である。 The present invention relates to a method for producing a shoe sole material for the purpose of improving the slip resistance of the shoe sole.

従来より靴底の耐滑性向上のため、靴底に多数の独立した突起を設けた靴底成形型にガラス繊維等の短繊維を混入した第１及び第２の未加硫ゴム生地を積層して配置し、加熱加圧して成形した靴底材をバフして突起の接地面側に短繊維を露出させることにより耐滑性を向上させる技術が提案されてきた。（特許文献１） Conventionally, in order to improve the slip resistance of the shoe sole, first and second unvulcanized rubber fabrics in which short fibers such as glass fiber are mixed are laminated on a shoe mold having a plurality of independent projections on the shoe sole. A technique has been proposed for improving slip resistance by buffing a shoe sole material formed by heating and pressurizing and exposing a short fiber to the ground contact surface side of the protrusion. (Patent Document 1)

特許第5305196号Patent No. 5305196

しかしながら、特許文献１の方法では短繊維を配合した未加硫ゴム生地を靴底成形型に配置する際、配置方向を定めていないため加熱加圧後の靴底材成形時に靴底下面の突起の接地面側に垂直に配向しないことがある。その結果、成形後のバフにより短繊維を露出させた際に垂直に露出しにくくなり、耐滑性が充分とはいえない。また、短繊維を混入した２枚の未加硫ゴム生地を積層して加熱加圧するため作業工程が多く効率がよいとはいえず、製造コスト高にもつながる。さらに、靴底下面の突起の立ち上がりが直角に形成されているため、加熱加圧後に靴底成形型からの脱型がスムーズに行われないことがあり、作業効率の低下や主に突起の立ち上がり付近に亀裂やひび割れが生じるおそれがあった。 However, in the method of Patent Document 1, when placing an unvulcanized rubber fabric blended with short fibers in a shoe mold, the arrangement direction is not defined, so that the projection on the bottom surface of the shoe sole is formed when molding the shoe material after heating and pressing. May not be oriented perpendicular to the ground plane side. As a result, when the short fiber is exposed by the buff after molding, it becomes difficult to expose vertically, and the slip resistance is not sufficient. Also, since two unvulcanized rubber fabrics mixed with short fibers are laminated and heated and pressed, the number of work steps is not high and the efficiency is high, leading to high manufacturing costs. Furthermore, since the protrusions on the bottom surface of the shoe sole are formed at a right angle, the mold release from the shoe mold may not be performed smoothly after heating and pressurization. There was a risk that cracks and cracks would occur in the vicinity.

本発明は前記課題を解決しようとするものであって、短繊維を配合した未加硫ゴム生地を多数の独立した突起を備えた靴底成形型に配置する際に、短繊維の配向と突起の幅方向が平行となるように配置して靴底材を成形することで、従来技術より多くの短繊維が接地面に対して垂直に露出し、かつ未加硫ゴム生地を積層する必要が無いため効率よく製造でき、製造コストが軽減する。その結果、完成した靴底材は従来技術より低コストで製造することができ、かつ耐滑性が向上し、氷面や雪寒地での快適な歩行を可能としたものである。 The present invention is intended to solve the above-mentioned problems, and when placing an unvulcanized rubber fabric blended with short fibers in a shoe mold with a large number of independent protrusions, the orientation and protrusions of the short fibers. It is necessary to laminate the unvulcanized rubber fabric by arranging so that the width direction of the shoe is parallel and molding the sole material so that more short fibers are exposed perpendicular to the ground surface than in the prior art Since there is no, it can manufacture efficiently and manufacturing cost is reduced. As a result, the completed shoe sole material can be manufactured at a lower cost than the prior art, and the slip resistance is improved, enabling comfortable walking on ice and snowy areas.

前記課題を解決するために請求項１記載の発明では、短繊維を混入させた未加硫ゴム生地を加熱加圧してなる靴底材において、その靴底材の下面に多数の独立した突起を設け、前記未加硫ゴム生地を靴底成形型に配置する際に、当該短繊維の配向と突起の幅方向が略平行となるように配置したことを特徴とするもので、これにより、加熱加圧による靴底材の成形の際に、短繊維が靴底下面に設けた突起の先端に向かって略垂直に配向する。すなわち、短繊維が接地面に対して略垂直に配向されるため、成形後のバフによって短繊維が略垂直状態で靴底から露出し、耐滑性を発揮する。 In order to solve the above-mentioned problems, in the invention according to claim 1, in a shoe sole material obtained by heating and pressurizing unvulcanized rubber cloth mixed with short fibers, a number of independent protrusions are formed on the lower surface of the shoe sole material. When the unvulcanized rubber fabric is disposed in a shoe sole mold, the short fiber orientation and the width direction of the protrusions are arranged so as to be substantially parallel. When forming the shoe sole material by pressurization, the short fibers are oriented substantially vertically toward the tip of the projection provided on the bottom surface of the shoe sole. That is, since the short fibers are oriented substantially perpendicular to the ground contact surface, the short fibers are exposed from the shoe sole in a substantially vertical state by the buff after molding, and exhibit slip resistance.

また、請求項２記載の発明では、前記請求項１記載の靴底材下面に設けた突起は、前記靴底材下面に設けた第１突起底面より接地面に対して伸びる第２突起を有した略凸形状からなり、当該第１突起の立ち上がりにアールを付し接地面に向かって略テーパー状となるように傾斜させ、かつ、前記第１突起底面から前記第２突起の先端までの長さを４〜１０mmとするとともに、前記第２突起底面の幅を２〜６mmとしたことを特徴とするもので、突起の形状を略凸形状としたことで加熱加圧後の成形時に短繊維が圧力により第２突起の先端に向かって流れ込み、接地面に向かって垂直に配向する。また、第１突起の立ち上がりにアールを付して丸みを持たせつつ先端に向かって略テーパー状に傾斜させ、かつ、前記第１突起から前記第２の突起先端までの突起全体の長さを４〜１０mmとすることで靴底成形型での加熱加圧後の脱型がスムーズに行われる。さらに、前記第２の突起底面の幅を２〜６mmとしたことで短繊維を露出させた接地面積が増大し、より耐滑性が発揮される。 In the invention according to claim 2, the protrusion provided on the bottom surface of the shoe sole material according to claim 1 has a second protrusion extending from the bottom surface of the first protrusion provided on the bottom surface of the shoe sole material to the grounding surface. The first protrusion is rounded so that the rising edge of the first protrusion is rounded so as to be substantially tapered toward the grounding surface, and the length from the bottom face of the first protrusion to the tip of the second protrusion is long. The length of the second projection bottom is 2 to 6 mm, and the length of the second projection is 2 to 6 mm. Flows toward the tip of the second protrusion due to pressure and is oriented vertically toward the ground plane. In addition, the rising of the first protrusion is rounded to have a rounded shape, and is inclined in a substantially tapered shape toward the tip, and the length of the entire protrusion from the first protrusion to the tip of the second protrusion is increased. By making the thickness 4 to 10 mm, demolding after heating and pressurization with a shoe mold is smoothly performed. Furthermore, by setting the width of the bottom surface of the second protrusion to 2 to 6 mm, the ground contact area where the short fibers are exposed is increased, and more slip resistance is exhibited.

また、請求項３記載の発明では、前記請求項１記載の未加硫ゴム生地に混入する短繊維は、その長さが１〜５mmであって、かつ、未加硫ゴム生地１００部あたり１０〜５０部を混入することを特徴とするもので、これにより加熱加圧時に短繊維が突起先端に垂直に流動しやすくなる。また、成形後のバフにて短繊維を露出させ歩行、走行を経て摩耗しても適度に接地面に露出し、耐滑性を持続させる。 In the invention of claim 3, the short fibers mixed in the unvulcanized rubber fabric according to claim 1 have a length of 1 to 5 mm and 10 parts per 100 parts of the unvulcanized rubber fabric. ˜50 parts are mixed, and this makes it easy for the short fibers to flow perpendicularly to the tip of the protrusion during heating and pressurization. Moreover, even if the short fiber is exposed by the buff after molding to wear after walking and running, it is appropriately exposed to the grounding surface and maintains the slip resistance.

本発明の靴底材は短繊維が靴底下面の第２突起先端、すなわち接地面に対して垂直に配向して露出するため、氷面や雪上での歩行の際に短繊維が地面を引っかく又はつかむようにグリップ力が発揮されて滑りにくくなる。また、靴底下面の第１突起の立ち上がりにアールを付して丸みを持たせつつ先端に向かってテーパーを施したことによって、成形後の脱型をスムーズに行うことができ作業効率が改善され、さらに靴底成形型からの脱型の際に突起と靴底との間に亀裂や裂けが生じないため品質及び耐久性に優れている。 In the shoe sole material of the present invention, the short fibers are exposed by being oriented perpendicularly to the tip of the second protrusion on the bottom surface of the shoe sole, that is, the ground contact surface, so that the short fibers scratch the ground when walking on ice or snow. Or grip force is demonstrated so that it may be grasped, and it becomes difficult to slip. In addition, the first protrusion on the bottom surface of the shoe sole is rounded to give a roundness and taper toward the tip, so that the mold can be removed smoothly after molding, and work efficiency is improved. Furthermore, since the crack and tear do not occur between the projection and the sole at the time of releasing from the sole molding die, the quality and durability are excellent.

従来の靴底材成形後の短繊維の配向を示す斜視図The perspective view which shows the orientation of the short fiber after the conventional shoe sole material shaping | molding 短繊維を混入させた未加硫ゴム生地をシート状にした外観図External view of unvulcanized rubber fabric mixed with short fibers in sheet form 裁断した未加硫ゴム生地片を靴底成形型へ配置した状態を示す平面図The top view which shows the state which has arrange | positioned the cut unvulcanized rubber fabric piece to a shoe sole shaping die 靴底成形型を加熱加圧して成形した状態を示す靴底材の断面図Cross-sectional view of shoe sole material showing a state where the shoe mold is molded by heating and pressing 成形した靴底材の第２突起をバフで除去した状態を示す靴底材の断面図Sectional drawing of the sole material which shows the state which removed the 2nd processus | protrusion of the molded sole material with the buff その他の実施例を示す靴底材の断面図Cross-sectional view of a shoe sole material showing another embodiment 図６に示す靴底材の突起をバフにて除去した状態を示す靴底材の断面図Sectional drawing of the sole material which shows the state which removed the processus | protrusion of the sole material shown in FIG. 6 with the buff

次に本発明の実施の形態について説明する。短繊維２を混入させた未加硫ゴム生地をロール機によりシート状１に圧延し、これを適宜裁断し得られた未加硫ゴム生地片１１を靴底成形型３に配置する。このとき、短繊維２の配向と靴底成形型３に備えた多数の独立した突起の幅方向が略平行となるように配置する。その後靴底成形型３を加熱加圧することにより短繊維２が加圧により第２突起４３の先端４４に向かって略垂直に流動する。成形後成形型３から脱型し、靴底材をバフで第２突起４３を除去し第１突起の底面４２を露出させ、この靴底材を適宜靴底に接着する。 Next, an embodiment of the present invention will be described. The unvulcanized rubber cloth mixed with the short fibers 2 is rolled into a sheet 1 by a roll machine, and the unvulcanized rubber cloth piece 11 obtained by appropriately cutting the sheet is placed in the shoe sole mold 3. At this time, it arrange | positions so that the orientation of the short fiber 2 and the width direction of many independent protrusions with which the shoe-sole shaping | molding die 3 was equipped become substantially parallel. Thereafter, the shoe sole mold 3 is heated and pressed to cause the short fibers 2 to flow substantially perpendicularly toward the tip 44 of the second protrusion 43 by pressing. After the molding, the mold 3 is removed from the mold 3, the second projection 43 is removed by buffing the shoe sole material to expose the bottom surface 42 of the first projection, and the shoe sole material is appropriately bonded to the shoe sole.

この発明において、未加硫ゴム生地は天然ゴム、スチレンブタジエンゴム、ブタジエンゴム、イソプレンゴム、ハイスチレンゴム、アクリルニトリルゴム、クロロプレインゴムなどの１種または２種以上の混合物を主成分として使用される。これに加硫剤、加硫助剤、加硫促進剤、充填剤、顔料、安定剤等のゴム配合用の常用薬品を添加し、バンバリーミキサー、ヘンシルミキサー、ミキシングロール、ニーダーなどの混合機によって混合し、これをロールによって圧延しシーティングする。 In the present invention, the unvulcanized rubber fabric is mainly composed of one or a mixture of two or more of natural rubber, styrene butadiene rubber, butadiene rubber, isoprene rubber, high styrene rubber, acrylonitrile rubber, chloroprene rubber and the like. The Add chemicals for rubber compounding such as vulcanizing agents, vulcanizing aids, vulcanization accelerators, fillers, pigments, stabilizers, etc., and mixers such as Banbury mixers, hensil mixers, mixing rolls, kneaders, etc. And then rolling and sheeting with a roll.

前記未加硫ゴム生地に添加される短繊維３は、ガラス繊維、アラミド繊維、アクリル繊維、ナイロン繊維、セルロース繊維、岩綿、ロックウール、石英繊維、シリカ繊維、ワラストナイト繊維、セラミックス繊維などの無機質繊維、金属繊維、炭素繊維等の１種または２種以上の混合物なる硬質繊維が使用される。また、前記短繊維２の大きさは直径が０．０５μｍ〜１００μｍで、より好ましくは１０〜５０μｍが良く、その長さは１〜５ｍｍのものを使用する。 The short fibers 3 added to the unvulcanized rubber fabric are glass fiber, aramid fiber, acrylic fiber, nylon fiber, cellulose fiber, rock wool, rock wool, quartz fiber, silica fiber, wollastonite fiber, ceramic fiber, etc. Hard fibers made of one kind or a mixture of two or more kinds of inorganic fibers, metal fibers, carbon fibers and the like are used. The short fiber 2 has a diameter of 0.05 μm to 100 μm, more preferably 10 to 50 μm, and a length of 1 to 5 mm.

前記未加硫ゴム生地は１００重量部に対して１０〜５０重量部の割合で短繊維を混入させる。このとき、短繊維の混入量が１０以下の場合は突起内の短繊維の量及び接地面への露出が少なくなり耐滑性が低下し、５０以上だと加熱加圧後のゴム生地の耐久性が低下する。そのため、短繊維の混入量は２０〜４０重量部が好ましい。また未加硫ゴム生地の硬度はＪＩＳ−Ｋ６３０１加硫ゴム物理試験方法によるスプリング式硬さ試験器Ａ形による測定で５０〜８０度とし、好ましくは６０±５度とする。また、短繊維とともに顔料を混入させることで所望する配色の靴底材となり、視覚上美的効果がある。 The unvulcanized rubber fabric is mixed with short fibers at a ratio of 10 to 50 parts by weight with respect to 100 parts by weight. At this time, if the amount of short fibers mixed is 10 or less, the amount of short fibers in the protrusion and the exposure to the grounding surface are reduced, and slip resistance is lowered, and if it is 50 or more, the durability of the rubber fabric after heating and pressing is reduced. Decreases. Therefore, the amount of short fibers mixed is preferably 20 to 40 parts by weight. The hardness of the unvulcanized rubber fabric is 50 to 80 degrees, preferably 60 ± 5 degrees as measured by a spring type hardness tester A type according to the physical test method of vulcanized rubber JIS-K6301. Also, by mixing the pigment together with the short fibers, it becomes a shoe sole material having a desired color scheme, and has a visual aesthetic effect.

前記未加硫ゴム生地に前記短繊維２を混入させ、ロールによって圧延しシーティングすると、短繊維２はロールの圧延方向に配向される。このシート状の未加硫ゴム生地１を適宜裁断し得られた未加硫ゴム生地片１１を靴底成形型３に配置する際に、短繊維２の配向と靴底成形型に備えた多数の独立した突起の幅方向が平行となるように配置する。このとき、短繊維２の配向と突起の幅方向が垂直となるように配置すると、図１に示すように加熱加圧の際に第２突起先端に向かって垂直に流動せず短繊維が水平のまま突起内で留まるため、成形後のバフにより第２突起４３を除去させても接地面に対して垂直に配向しにくい。 When the short fibers 2 are mixed into the unvulcanized rubber fabric, rolled with a roll and sheeted, the short fibers 2 are oriented in the rolling direction of the roll. When the unvulcanized rubber fabric piece 11 obtained by appropriately cutting the sheet-like unvulcanized rubber fabric 1 is placed on the shoe sole molding die 3, the orientation of the short fibers 2 and a large number provided in the shoe sole molding die are provided. The independent protrusions are arranged so that the width directions thereof are parallel to each other. At this time, if the short fibers 2 are arranged so that the orientation of the short fibers 2 and the width direction of the protrusions are perpendicular to each other, as shown in FIG. Therefore, even if the second protrusion 43 is removed by the buff after forming, it is difficult to orient perpendicularly to the ground plane.

前記のように靴底成形型３に未加硫ゴム生地片１１を配置し加熱加圧すると、圧力によって短繊維２が第２突起４３の先端４４に向かって垂直に流動して配向し、第２突起の内部でほぼ垂直に留まる。このとき突起全体を略凸形状としたこと、及び第１突起底面から第２突起先端に向かってテーパー状に傾斜を設けたことで短繊維２がより垂直方向に流動しやすくなっている。さらに第１突起底面から第２突起先端までの長さを４〜１０ｍｍとしたことで加圧による短繊維の流動経路を確保でき、垂直に配向しやすくなる。ここで突起全体の長さを４ｍｍ以下とした場合、加圧による流動経路が短くなり短繊維が垂直に配向される前に突起先端に留まることになり、また１０ｍｍ以上とした場合、成形後の脱型が容易ではなく、その結果靴底材に亀裂や裂けが生じて効率的ではない。 As described above, when the unvulcanized rubber fabric piece 11 is arranged on the shoe sole mold 3 and heated and pressurized, the short fibers 2 are vertically flowed and oriented toward the tip 44 of the second projection 43 by the pressure. It stays almost vertical inside the two protrusions. At this time, the short fibers 2 are more likely to flow in the vertical direction because the entire protrusion has a substantially convex shape, and a tapered slope is provided from the bottom surface of the first protrusion toward the tip of the second protrusion. Furthermore, when the length from the bottom surface of the first protrusion to the tip end of the second protrusion is 4 to 10 mm, a flow path of the short fibers by pressurization can be secured, and it becomes easy to align vertically. Here, when the length of the whole protrusion is 4 mm or less, the flow path by pressurization is shortened, and the short fiber is left at the tip of the protrusion before being vertically oriented, and when it is 10 mm or more, Demolding is not easy, and as a result, cracks and tears occur in the sole material, which is not efficient.

成形後、成形型から脱型した靴底材をバフで第２突起４３を除去すると垂直に配向された短繊維が第１突起底面４２に露出し、露出した短繊維の面積は第１突起底面のうち約４０％を占める。またこのとき、第１突起の底面もバフにより削られるため短繊維が露出しさらに耐滑性能が向上する。その後靴底に接着するため靴底材を所望の大きさに適宜裁断した後、靴底材上面をバフし表面をシボ状に粗くした後ゴムまたはウレタンあるいはＥＶＡ製の靴底と接着する。 After forming, when the second protrusion 43 is removed by buffing the shoe sole material removed from the mold, the vertically oriented short fibers are exposed on the first protrusion bottom face 42, and the area of the exposed short fibers is the first protrusion bottom face. About 40% of the total. At this time, the bottom surface of the first protrusion is also shaved by the buff, so that the short fibers are exposed and the slip resistance is further improved. Thereafter, the shoe sole material is appropriately cut to a desired size for bonding to the shoe sole, and then the upper surface of the shoe sole material is buffed to roughen the surface into a textured shape, and then bonded to a shoe sole made of rubber, urethane, or EVA.

本発明の靴底材下面の多数の独立した突起は、その平面視形状を限定するものではなく、長方形、正方形、多角形、星形でも良い。またその配列についても特定のものに限定されず、同一方向に均等に配列または略稲妻状（ジグザグ）に配列しても良い。なお、略稲妻状に配列した場合は歩行時に多方向にグリップ力が発揮され、短繊維による耐滑性能に加えて耐滑性能がさらに向上する。 The large number of independent protrusions on the bottom surface of the shoe sole material of the present invention are not limited in shape in plan view, and may be rectangular, square, polygonal, or star-shaped. Further, the arrangement is not limited to a specific one, and the arrangement may be equally arranged in the same direction or arranged in a substantially lightning pattern (zigzag). In addition, when arranged in a substantially lightning bolt shape, grip force is exhibited in multiple directions during walking, and the slip resistance performance is further improved in addition to the slip resistance performance due to the short fibers.

以下、本発明の実施の形態を図面を用いて説明する。図１は従来技術による短繊維の配向を示す概略図、図２は未加硫ゴム生地に短繊維２を混入しロールによって圧延しシート状にした状態を示す外観図、図３は図２において裁断した未加硫ゴム生地片１１を靴底成形型３に配置した状態を示す平面図、図４は靴底成形型３に未加硫ゴム生地片１１を配置し加熱加圧した後の状態を示す靴底材の断面図、図５は図４において作成された靴底材をバフにより第２突起４３を除去した状態を示す断面図、図６は他の実施例を示す靴底材の断面図。符号１は未加硫ゴム生地シート、符号２は短繊維、符号３は靴底成形型、符号４は靴底材、符号１１は未加硫ゴム生地片、符号４０は突起、符号４１は第１突起、符号４２は第１突起底面、符号４３は第２突起、符号４４は第２突起先端、符号４５は立ち上がり角、符号５０は第２突起ａ、符号５１は第２突起ｂ、符号６０は第３突起を示す。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view showing the orientation of short fibers according to the prior art, FIG. 2 is an external view showing a state in which the short fibers 2 are mixed into an unvulcanized rubber fabric and rolled with a roll, and FIG. FIG. 4 is a plan view showing a state in which the cut unvulcanized rubber fabric piece 11 is arranged on the shoe sole molding die 3, and FIG. 4 shows a state after the unvulcanized rubber fabric piece 11 is arranged on the shoe sole molding die 3 and heated and pressurized. FIG. 5 is a sectional view showing a state in which the second protrusion 43 is removed by buffing the shoe sole material created in FIG. 4, and FIG. 6 is a shoe sole material showing another embodiment. Sectional drawing. Reference numeral 1 is an unvulcanized rubber cloth sheet, reference numeral 2 is a short fiber, reference numeral 3 is a shoe molding mold, reference numeral 4 is a shoe sole material, reference numeral 11 is an unvulcanized rubber cloth piece, reference numeral 40 is a protrusion, reference numeral 41 is the first 1 protrusion, reference numeral 42 is the first protrusion bottom surface, reference numeral 43 is the second protrusion, reference numeral 44 is the tip of the second protrusion, reference numeral 45 is the rising angle, reference numeral 50 is the second protrusion a, reference numeral 51 is the second protrusion b, reference numeral 60 Indicates a third protrusion.

未加硫ゴム生地は天然ゴムをベースとしスチレンブタジエンゴムをブレンドしたゴム主成分１００重量部に対してガラス繊維４０重量部を添加し、ニーダーで混練したものを圧延ロールで圧延する。圧延ロールの方向にガラス繊維が配向された５ｍｍ厚のシート状にした未加硫ゴム生地シート１を靴底成形型に適合する大きさに適宜裁断し、未加硫ゴム生地片１１が得られる。 The unvulcanized rubber fabric is prepared by adding 40 parts by weight of glass fiber to 100 parts by weight of a rubber main component obtained by blending styrene butadiene rubber with natural rubber as a base, and kneading with a kneader and rolling with a rolling roll. An unvulcanized rubber dough sheet 1 in the form of a sheet having a thickness of 5 mm in which glass fibers are oriented in the direction of the rolling roll is appropriately cut to a size suitable for a shoe sole mold, and an unvulcanized rubber dough piece 11 is obtained. .

靴底成形型３は多数の独立した突起を備えており、各々の突起は高さ４〜１０mm、幅７mmで、突起の立ち上がりにアールを付して丸みを持たせつつ接地面に向かってテーパーを施した第１突起４１を形成し、さらに第１突起４１の底面４２からは接地面に向かってテーパーを施しつつ伸びる第２突起４３を形成し、全体として第１突起の立ち上がり４５から第２突起先端４４までテーパーを施し傾斜を設けている。この靴底成形型３にガラス繊維２の配向と突起の幅方向が平行となるように未加硫ゴム生地片１１を配置し、１５０℃、１００ｋｇ／cmで６分間加熱加圧して靴底材を成形する。 The shoe mold 3 has a large number of independent protrusions, each of which has a height of 4 to 10 mm and a width of 7 mm. The first protrusion 41 is formed, and the second protrusion 43 extending from the bottom surface 42 of the first protrusion 41 while being tapered toward the grounding surface is formed. A taper is provided to the tip 44 of the protrusion to provide an inclination. An unvulcanized rubber fabric piece 11 is arranged on the shoe sole mold 3 so that the orientation of the glass fibers 2 and the width direction of the projections are parallel to each other, and heated and pressed at 150 ° C. and 100 kg / cm for 6 minutes for the shoe sole material. Is molded.

成形後、靴底成形型３から脱型した靴底材をバフで第２突起４３を除去すると本発明の靴底材４が完成する。この靴底材を靴底の所望の位置に配置し、ＰＵインジェクション又は直接貼り付けによって靴底に接着する。 After the molding, the shoe sole material 4 of the present invention is completed by removing the second protrusions 43 by buffing the shoe sole material removed from the shoe sole mold 3. The shoe sole material is placed at a desired position on the shoe sole and bonded to the shoe sole by PU injection or direct attachment.

また、図６に示すように靴底下面の第1突起の底面４２に接地面に向かって伸びる突起を２つ設けると共に、前記突起４０よりも接地面方向に高くした第３突起６０を所定位置に配置することでさらに耐滑性を向上させることができる。このとき第３突起６０の高さを８mm、幅を３〜４mmとすることで突起４０よりも多く短繊維が露出し、さらに耐滑性の向上が期待できる。 Further, as shown in FIG. 6, two protrusions extending toward the ground contact surface are provided on the bottom surface 42 of the first protrusion on the bottom surface of the shoe sole, and the third protrusion 60 which is higher in the ground contact surface direction than the protrusion 40 is provided at a predetermined position. The slip resistance can be further improved by disposing in the above. At this time, by setting the height of the third protrusion 60 to 8 mm and the width to 3 to 4 mm, more short fibers are exposed than the protrusion 40, and further improvement in slip resistance can be expected.

１ 未加硫ゴム生地シート
２ 短繊維
１１ 未加硫ゴム生地片
３ 靴底成形金型
４ 靴底材
４０ 突起
４１ 第１突起
４２ 第１突起底面
４３ 第２突起
４４ 第２突起先端
４５ 立ち上がり
５０ 第2突起a
５１ 第2突起b
６０ 第３突起 DESCRIPTION OF SYMBOLS 1 Unvulcanized rubber fabric sheet 2 Short fiber 11 Unvulcanized rubber fabric piece 3 Shoe sole molding die 4 Sole material 40 Protrusion 41 First protrusion 42 First protrusion bottom surface 43 Second protrusion 44 Second protrusion tip 45 Rise 50 Second protrusion a
51 2nd protrusion b
60 3rd protrusion

Claims (3)

短繊維を混入させた未加硫ゴム生地を加熱加圧してなる靴底材において、その靴底材の下面に多数の独立した突起を設けた靴底材成形型に未加硫ゴム生地を配置する際に、当該短繊維の配向と突起の幅方向が略平行となるように配置したことを特徴とする靴底材。 In a shoe sole made by heating and pressing unvulcanized rubber fabric mixed with short fibers, the unvulcanized rubber fabric is placed in a shoe sole mold with many independent protrusions on the bottom of the shoe sole. The shoe sole material is arranged so that the orientation of the short fibers and the width direction of the protrusions are substantially parallel to each other. 前記記載の靴底材下面に設けた突起は、前記靴底下面に設けた第１突起底面より接地面に伸びる第２突起を有した略凸形状からなり、前記第１突起の立ち上がりにアールを付し突起全体が接地面に向かって先細りするように略テーパー状の傾斜を設け、かつ、前記第１突起底面から第２突起先端までの長さを４〜１０mmとするとともに、前記第２突起底面の幅を２〜６mmとし、前記靴底成形型による加熱加圧後、脱型した靴底材をバフ処理により第２突起を除去し短繊維を露出させることを特徴とする請求項１記載の靴底材。 The protrusion provided on the bottom surface of the shoe sole material has a substantially convex shape having a second protrusion extending from the bottom surface of the first protrusion provided on the bottom surface of the shoe sole to the ground surface. The second protrusion is provided with a substantially tapered slope so that the entire protrusion is tapered toward the ground surface, and the length from the bottom surface of the first protrusion to the tip of the second protrusion is 4 to 10 mm. The width of the bottom is set to 2 to 6 mm, and after heating and pressurizing by the shoe sole forming die, the second protrusion is removed by buffing the removed shoe sole material to expose the short fibers. Shoe sole material. 前記記載の未加硫ゴム生地に混入する短繊維は、その長さが少なくとも１〜５mmであって、かつ、未加硫ゴム生地１００部あたり少なくとも２０〜５０部を混入することを特徴とする請求項１または２記載の靴底材。 The short fibers mixed in the unvulcanized rubber fabric described above have a length of at least 1 to 5 mm, and are mixed with at least 20 to 50 parts per 100 parts of the unvulcanized rubber fabric. The sole material according to claim 1 or 2.
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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5873104U (en) * 1981-11-13 1983-05-18 藤倉ゴム工業株式会社 athletic shoe soles
JPH01254102A (en) * 1988-04-02 1989-10-11 Asahi Corp Method of molding antislip shoe sole
JPH01310601A (en) * 1988-06-08 1989-12-14 Asics Corp Production of shoe sole
JPH044802U (en) * 1990-04-27 1992-01-17
JPH09276003A (en) * 1996-04-12 1997-10-28 Moon Star Co Sole for shoes
JP2004049682A (en) * 2002-07-23 2004-02-19 Asahi Corp Forming method of sole material
JP2010099212A (en) * 2008-10-23 2010-05-06 Asahi Corp Shoe sole material and its forming method
US20110258886A1 (en) * 2010-04-26 2011-10-27 Ku Do Moon Slip-Resistant Rubber Composition, Outsole Using the Rubber Composition and Method of Manufacturing the Outsole
JP2015150013A (en) * 2014-02-10 2015-08-24 株式会社ブンシジャパン Sole of shoe

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5873104U (en) * 1981-11-13 1983-05-18 藤倉ゴム工業株式会社 athletic shoe soles
JPH01254102A (en) * 1988-04-02 1989-10-11 Asahi Corp Method of molding antislip shoe sole
US5091125A (en) * 1988-04-02 1992-02-25 Asahi Corporation Method of forming anti-slip shoe sole
JPH01310601A (en) * 1988-06-08 1989-12-14 Asics Corp Production of shoe sole
JPH044802U (en) * 1990-04-27 1992-01-17
JPH09276003A (en) * 1996-04-12 1997-10-28 Moon Star Co Sole for shoes
JP2004049682A (en) * 2002-07-23 2004-02-19 Asahi Corp Forming method of sole material
JP2010099212A (en) * 2008-10-23 2010-05-06 Asahi Corp Shoe sole material and its forming method
JP5305196B2 (en) * 2008-10-23 2013-10-02 株式会社アサヒコーポレーション Shoe sole material and molding method thereof
US20110258886A1 (en) * 2010-04-26 2011-10-27 Ku Do Moon Slip-Resistant Rubber Composition, Outsole Using the Rubber Composition and Method of Manufacturing the Outsole
JP2015150013A (en) * 2014-02-10 2015-08-24 株式会社ブンシジャパン Sole of shoe

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