JP2916370B2 - Shoe sole - Google Patents
Shoe soleInfo
- Publication number
- JP2916370B2 JP2916370B2 JP10369194A JP10369194A JP2916370B2 JP 2916370 B2 JP2916370 B2 JP 2916370B2 JP 10369194 A JP10369194 A JP 10369194A JP 10369194 A JP10369194 A JP 10369194A JP 2916370 B2 JP2916370 B2 JP 2916370B2
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- outsole
- resin
- shoe sole
- resin sheet
- 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 - Fee Related
Links
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Laminated Bodies (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は本底の少なくとも一部を
繊維強化樹脂シートで置換することにより補強した靴底
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe sole reinforced by replacing at least a part of the sole with a fiber-reinforced resin sheet.
【０００２】[0002]
【従来の技術】従来から靴底には各種の補強材が使用さ
れており、例えば炭素繊維からなる織物やマットなどを
エポキシ樹脂、ポリエステル樹脂、フェノール樹脂など
の熱硬化性樹脂でシート状にした繊維強化プラスチック
シートから成る補強材を靴底に内蔵または接着剤等によ
り適当な箇所に接着せしめた靴底が利用されている。2. Description of the Related Art Conventionally, various reinforcing materials have been used for shoe soles. For example, a woven fabric or mat made of carbon fiber is formed into a sheet with a thermosetting resin such as an epoxy resin, a polyester resin or a phenol resin. A shoe sole in which a reinforcing material made of a fiber reinforced plastic sheet is incorporated in the shoe sole or bonded to an appropriate place with an adhesive or the like is used.
【０００３】しかしながら、上記繊維強化プラスチック
シートは、靴底の本底に使用されるウレタン樹脂やポリ
アミド樹脂に比べて曲げ弾性率が高いため、靴底の可撓
性を阻害し、屈曲の反復により繊維強化プラスチック材
料とがずり変形して靴底と剥離しやすい欠点があった。However, since the fiber-reinforced plastic sheet has a higher flexural modulus than urethane resin or polyamide resin used for the sole of the shoe sole, it inhibits the flexibility of the shoe sole and causes repeated bending. There was a drawback that the fiber-reinforced plastic material was easily deformed and easily peeled off from the shoe sole.
【０００４】本底と繊維強化樹脂シートとの相溶性を向
上させる手段として様々な提案が成されているが(例え
ば、実開昭６２−１１９８０４号公報)、未だ激しい屈
曲による靴底と繊維強化樹脂シートとの界面剥離との問
題は完全には解決されていない。Various proposals have been made as means for improving the compatibility between the outsole and the fiber-reinforced resin sheet (for example, Japanese Utility Model Laid-Open No. Sho 62-119804), but the shoe sole and the fiber reinforced due to severe bending are still in use. The problem of interface delamination with the resin sheet has not been completely solved.
【０００５】[0005]
【発明が解決しようとする課題】本発明者らは、本底お
よび繊維強化樹脂シートに用いられている樹脂の種類を
種々に変更し、剥離強度等の試験を行った結果、特定の
樹脂の組み合わせがその界面剥離の問題を大きく改善す
ることを見出し、本発明を成した。SUMMARY OF THE INVENTION The present inventors changed the types of resins used for the outsole and the fiber-reinforced resin sheet in various ways and conducted tests such as peel strength. The inventors have found that the combination greatly improves the problem of interfacial delamination, and have made the present invention.
【０００６】[0006]
【課題を解決するための手段】すなわち、本発明は本底
の少なくとも一部を繊維強化樹脂シートで置換すること
により補強した靴底であって、本底が熱可塑性ポリウレ
タン樹脂より成り、繊維強化樹脂シートが繊維層と、熱
硬化性ポリウレタン樹脂から成る樹脂層とから成ること
を特徴とする靴底を提供する。That is, the present invention relates to a shoe sole reinforced by replacing at least a part of the sole with a fiber-reinforced resin sheet, wherein the sole is made of a thermoplastic polyurethane resin, A shoe sole characterized in that the resin sheet comprises a fiber layer and a resin layer made of a thermosetting polyurethane resin.
【０００７】本発明の繊維強化樹脂シートを構成する繊
維層は長繊維を織ったものでもよいし、短繊維を樹脂マ
トリックスに分散させたものでもよい。[0007] The fiber layer constituting the fiber reinforced resin sheet of the present invention may be a woven long fiber or a short fiber dispersed in a resin matrix.
【０００８】繊維は炭素、芳香族ポリアミド繊維、ポリ
アミド繊維、ポリエチレン繊維、ボロン繊維、ポリエス
テル繊維、アクリル繊維などの合成繊維または天然繊維
が用いられ、更にこれらに接着処理を施したものが望ま
しい。炭素繊維は強度弾性率の点で望ましく、例えば東
レ株式会社から市販の炭素繊維５Ｔ３４７が挙げられ
る。As the fiber, synthetic fiber or natural fiber such as carbon, aromatic polyamide fiber, polyamide fiber, polyethylene fiber, boron fiber, polyester fiber and acrylic fiber is used, and it is preferable that these fibers are further subjected to an adhesive treatment. Carbon fibers are desirable from the viewpoint of strength elastic modulus, and include, for example, carbon fiber 5T347 commercially available from Toray Industries, Inc.
【０００９】繊維強化樹脂シートは上記繊維を熱硬化性
ポリウレタン樹脂と硬化剤とを混合した液状樹脂に浸
漬、含浸させた後、熱硬化させたものが一般的である
が、熱硬化させなくてもよい。一液タイプの熱硬化性ポ
リウレタン樹脂、即ち硬化剤を必要とせずに熱や紫外線
で硬化するタイプのものを用いてもよい。樹脂含浸量は
繊維強化樹脂シート中の樹脂／繊維重量比が５／９５〜
９０／１０であることが好ましい。The fiber-reinforced resin sheet is generally obtained by immersing and impregnating the above-mentioned fibers in a liquid resin obtained by mixing a thermosetting polyurethane resin and a curing agent, and then heat-curing. Is also good. A one-part type thermosetting polyurethane resin, that is, a type that cures with heat or ultraviolet light without using a curing agent may be used. The resin impregnation amount is such that the resin / fiber weight ratio in the fiber reinforced resin sheet is 5 / 95-
It is preferably 90/10.
【００１０】本発明では繊維強化樹脂シートの樹脂とし
て熱硬化性ポリウレタンを採用し、本底の樹脂として熱
可塑性ポリウレタン樹脂を採用することを特徴とする。
このような樹脂を選択することにより、本底との接着性
が大きく改善され、繊維強化樹脂シートによる補強効果
が十分に発揮される。一般的に熱可塑性とは、加熱する
と軟化、流動し、冷却すると再び硬くなる性質、熱硬化
性とは、加熱により硬化反応を起こして硬化する性質を
いう。ポリウレタンの場合、イソシアネート基がアミン
(−ＮＨ2)基、水酸基(−ＯＨ)と反応し、３次元的に架
橋するタイプを熱硬化性ウレタンと言う。熱可塑性ウレ
タンにはこのような架橋反応は存在しない。The present invention is characterized in that a thermosetting polyurethane is used as the resin of the fiber reinforced resin sheet, and a thermoplastic polyurethane resin is used as the resin of the outsole.
By selecting such a resin, the adhesiveness to the outsole is greatly improved, and the reinforcing effect of the fiber-reinforced resin sheet is sufficiently exhibited. In general, thermoplastic refers to a property of softening and flowing when heated and becoming hard again when cooled, and thermosetting refers to a property of causing a curing reaction to be cured by heating. In the case of polyurethane, isocyanate groups are amine
(-NH 2) and reactive groups, and a hydroxyl group (-OH), a refers to the type of crosslinking three-dimensionally and thermoset urethane. No such crosslinking reaction exists in thermoplastic urethanes.
【００１１】本発明の繊維強化樹脂シートの代表的な例
を図１に示す。図１中１は繊維層を示し、２はその繊維
層を挾んだ形の樹脂層を示す。FIG. 1 shows a typical example of the fiber-reinforced resin sheet of the present invention. In FIG. 1, 1 indicates a fiber layer, and 2 indicates a resin layer sandwiching the fiber layer.
【００１２】本発明において「本底」とは、靴底の主要
な部分を占める樹脂部分を言い、図２を参照して述べる
と３と４が共に本底を形成する。本発明ではこの本底の
少なくとも一部を前述の繊維強化樹脂シートで置換する
ことにより本底を補強し、靴底として優れたものを提供
する。置換の仕方は図２に示すように、本底のつま先部
分の上部を本発明の繊維強化樹脂シートで置換してもよ
い。また、図３および図４に示すように、本底の中央部
あるいは底の部分を繊維強化樹脂シートで置換してもよ
い。In the present invention, the "outsole" refers to a resin portion occupying a major part of the shoe sole, and when referring to FIG. 2, 3 and 4 together form the outsole. In the present invention, at least a part of the outsole is replaced with the above-mentioned fiber-reinforced resin sheet to reinforce the outsole and provide an excellent shoe sole. As shown in FIG. 2, the upper part of the toe portion of the outsole may be replaced with the fiber reinforced resin sheet of the present invention. Further, as shown in FIGS. 3 and 4, the central portion or the bottom portion of the outsole may be replaced with a fiber reinforced resin sheet.
【００１３】繊維強化樹脂シートで本底の一部を置換す
る方法は、種々の方法が挙げられる。一般には予め成形
した繊維強化樹脂シートを形内に挿入して本底の樹脂を
さらに型内に供給することにより本底の一部が繊維強化
樹脂シートで置換される(一体成形)。もちろん必要に応
じて本底と繊維強化樹脂シートを別々に成形した後、適
当な接着剤あるいは融着などの方法で接着してもよい。
一般的には一体成形が好ましい。There are various methods for replacing a part of the outsole with the fiber reinforced resin sheet. In general, a preformed fiber-reinforced resin sheet is inserted into a shape, and the resin of the outsole is further supplied into the mold, whereby a part of the outsole is replaced with the fiber-reinforced resin sheet (integral molding). Of course, if necessary, the outsole and the fiber reinforced resin sheet may be separately formed and then bonded by a suitable adhesive or a method such as fusion.
Generally, integral molding is preferred.
【００１４】[0014]
【実施例】本発明を実施例によりさらに詳細に説明す
る。本発明はこれら実施例に限定されるものではない。EXAMPLES The present invention will be described in more detail with reference to Examples. The present invention is not limited to these examples.
【００１５】実施例１および比較例１〜７ 実施例および比較例に用いた樹脂層の材質を以下に示
す。実施例中ではこの表１に記載の略号を用いている。 Example 1 and Comparative Examples 1 to 7 The materials of the resin layers used in Examples and Comparative Examples are shown below. Abbreviations described in Table 1 are used in the examples.
【００１６】[0016]
【表１】 [Table 1]
【００１７】これら樹脂の耐溶剤性試験を、トルエン４
０℃で２４時間浸漬した後の重量変化率で測定した。耐
溶剤性は本底がその靴本体と接着剤で固定されるため、
接着剤中のトルエンなどの溶剤に対する試験であって、
耐溶剤性の低いものは使用することはできない。The solvent resistance test of these resins was conducted using toluene 4
It was measured by the weight change rate after immersion at 0 ° C. for 24 hours. Solvent resistance because the outsole is fixed to the shoe body and adhesive,
A test for a solvent such as toluene in the adhesive,
Those having low solvent resistance cannot be used.
【００１８】まず、実施例１及び比較例１については、
液状樹脂を補強繊維に含漬させ、シートを作成した。ま
た、比較例２〜７については、補強繊維の表裏両面に樹
脂層を積層し、図１に示すようなシートを作成した。こ
のシートに成形によりポリウレタンを成形することによ
り、本底を図２に示すように置換したものを形成した。
この本底を一般の運動靴の本体と組み合わせて運動用靴
を作製した。First, in Example 1 and Comparative Example 1,
The sheet was prepared by impregnating the liquid resin with the reinforcing fibers. Further, in Comparative Examples 2 to 7, resin layers were laminated on both the front and back surfaces of the reinforcing fiber to prepare a sheet as shown in FIG. The sheet was molded from polyurethane to form a sheet in which the outsole was replaced as shown in FIG.
The outsole was combined with the body of a general athletic shoe to produce an athletic shoe.
【００１９】得られた靴に対し剥離強度試験および屈曲
疲労試験を行った。剥離強度試験は靴底２５mm×１００
mmに打ち抜き、ＪＩＳ Ｋ６３０１の方法に準じて剥離
強度試験を行った。得られた数値が高いほど剥離強度が
優れている。屈曲疲労試験: 得られた靴を９０°まで曲
げ、そして元に戻すことを繰り返し、１００００回毎に
チェックし、剥離が起こるまでの回数を表２に記載す
る。The resulting shoes were subjected to a peel strength test and a bending fatigue test. Peeling strength test: shoe sole 25mm x 100
The sheet was punched into a mm, and subjected to a peel strength test according to the method of JIS K6301. The higher the numerical value obtained, the better the peel strength. Flexural Fatigue Test: The resulting shoe is repeatedly bent and turned back to 90 °, checked every 10,000 times and the number of times until delamination occurs is listed in Table 2.
【００２０】実施例１が剥離強度、屈曲疲労度ともに優
れる理由は、熱硬化性ポリウレタンは分子量が低く、反
応性の高い官能基を有しており、本底に早く低温で拡散
浸透し、また本底と直接反応するためと思われる。The reason why Example 1 is excellent in both peel strength and flex fatigue is that the thermosetting polyurethane has a low molecular weight and a highly reactive functional group, and diffuses and penetrates into the outsole at a low temperature quickly. Probably because it reacts directly with the outsole.
【００２１】[0021]
【表２】 [Table 2]
【００２２】[0022]
【発明の効果】本発明では、繊維強化樹脂シートと本底
の樹脂との接着性が非常によく、本底の動きに対し繊維
強化樹脂シートが追従しやすく、本底と繊維強化樹脂シ
ートの剥離が起こりにくくなる。According to the present invention, the adhesion between the fiber reinforced resin sheet and the resin at the outsole is very good, and the fiber reinforced resin sheet easily follows the movement of the outsole. Peeling is less likely to occur.
【００２３】本発明では本底との繊維強化樹脂の境界面
が完全に密着しているので、過度の屈曲に対しても、剥
離が生じず、弾性、屈曲疲労性、耐久性に優れている。
本発明の靴底は靴の変形防止に対し多大の効果を発揮す
る。また、繊維強化樹脂シートの硬化により、従来の靴
底の肉厚のものに比べ、薄い肉厚のもので十分な使用に
耐えうるので、薄く軽量な靴底が提供できる。In the present invention, since the boundary surface of the fiber reinforced resin with the outsole is completely adhered, even if it is excessively bent, it does not peel off and is excellent in elasticity, bending fatigue resistance and durability. .
The shoe sole of the present invention has a great effect on preventing deformation of shoes. Further, by curing the fiber-reinforced resin sheet, a thinner and more lightweight shoe sole can be provided since the thinner one can withstand sufficient use as compared with the conventional thicker one.
【００２４】本発明の靴底は種々のスポーツや運動靴に
使用することができ、特にゴルフ、野球、サッカー、ラ
グビーなどのスパイクやポイントの付いた靴では、突き
あげ感のない靴が提供できる。The sole of the present invention can be used for various sports and athletic shoes, and in particular, shoes with spikes and points, such as golf, baseball, soccer, and rugby, can provide shoes without a feeling of thrust. .
【００２５】また、本底の底部を繊維強化樹脂シートに
置換した場合に、使用する繊維強化樹脂シートと本底と
のコントラストを明確にすることにより、外観に優れた
靴底も提供できる。When the sole of the outsole is replaced with a fiber-reinforced resin sheet, the contrast between the fiber-reinforced resin sheet to be used and the outsole is clarified, so that a shoe sole with excellent appearance can be provided.
【図１】 本発明で用いる繊維強化樹脂シートの模式断
面図。FIG. 1 is a schematic sectional view of a fiber reinforced resin sheet used in the present invention.
【図２】 本発明で得られる靴の一例を示す図。FIG. 2 is a view showing an example of shoes obtained by the present invention.
【図３】 本発明の靴底の一例をの模式断面図。FIG. 3 is a schematic cross-sectional view of an example of the shoe sole of the present invention.
【図４】 本発明の靴底の別の例を模式断面図。FIG. 4 is a schematic sectional view showing another example of the shoe sole of the present invention.
１…繊維層、２…樹脂層、３…繊維強化樹脂シート、４
…本底。DESCRIPTION OF SYMBOLS 1 ... fiber layer, 2 ... resin layer, 3 ... fiber reinforced resin sheet, 4
... the outsole.
Claims (1)
ートで置換することにより補強した靴底であって、本底
が熱可塑性ポリウレタン樹脂より成り、繊維強化樹脂シ
ートが繊維層と、熱硬化性ポリウレタン樹脂から成る樹
脂層とから成ることを特徴とする靴底。1. A shoe sole reinforced by replacing at least a part of the outsole with a fiber reinforced resin sheet, wherein the outsole is made of a thermoplastic polyurethane resin, and the fiber reinforced resin sheet is made of a fiber layer and a thermosetting resin. And a resin layer made of a conductive polyurethane resin.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10369194A JP2916370B2 (en) | 1994-05-18 | 1994-05-18 | Shoe sole |
| CN 95105268 CN1104214C (en) | 1994-05-18 | 1995-05-18 | The present invention relates to a shoe sole of which a portion is substituted with a fiber reinforced resin sheet |
| TW084105398A TW365521B (en) | 1994-05-18 | 1995-05-29 | Sole for shoes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10369194A JP2916370B2 (en) | 1994-05-18 | 1994-05-18 | Shoe sole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07308203A JPH07308203A (en) | 1995-11-28 |
| JP2916370B2 true JP2916370B2 (en) | 1999-07-05 |
Family
ID=14360811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10369194A Expired - Fee Related JP2916370B2 (en) | 1994-05-18 | 1994-05-18 | Shoe sole |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2916370B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7178267B2 (en) | 2003-12-12 | 2007-02-20 | Polyworks, Inc. | Method for forming footwear structures using thermoforming |
| US20230024019A1 (en) * | 2019-12-12 | 2023-01-26 | Asics Corporation | Shoe sole and shoe including the same |
-
1994
- 1994-05-18 JP JP10369194A patent/JP2916370B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07308203A (en) | 1995-11-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |