WO2016002412A1 - Counter and shoe - Google Patents
Counter and shoe Download PDFInfo
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- WO2016002412A1 WO2016002412A1 PCT/JP2015/065783 JP2015065783W WO2016002412A1 WO 2016002412 A1 WO2016002412 A1 WO 2016002412A1 JP 2015065783 W JP2015065783 W JP 2015065783W WO 2016002412 A1 WO2016002412 A1 WO 2016002412A1
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- WIPO (PCT)
- Prior art keywords
- core
- moon
- shoe
- laminate
- heel
- Prior art date
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/08—Heel stiffeners; Toe stiffeners
- A43B23/14—Heel stiffeners; Toe stiffeners made of leather
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/08—Heel stiffeners; Toe stiffeners
- A43B23/16—Heel stiffeners; Toe stiffeners made of impregnated fabrics, plastics or the like
Definitions
- the present invention relates to a lunar wick and shoes, and more particularly to a novel lunar wick formed by a laminate formed by laminating a plurality of cloth-like bodies and a shoe provided with the same.
- shoes have a lunar core (also called a counter) interposed between the upper and inner skin as a core material for reinforcing the buttocks.
- this moon-shaped core is made by impregnating paper, synthetic resin, or cloth impregnated with resin on base paper made from wood pulp. Things have been widely used in the past. And this moon shaped core has been considered to be the best in terms of improving the appearance of the buttocks and fitting to the feet.
- a moon-shaped core other than Nume one made by attaching impregnated paper with an adhesive to one side of a tanned rawhide (Patent Document 1), a moon mold used for a curved part such as a heel part of a shoe, etc. Stretch made by applying thermosetting adhesives with different moisture contents to the front and back surfaces of the shoe core material (Patent Document 2), sandwiching a moon core made of a thermosetting material in a sandwich shape Of non-woven non-woven chemical sheet on the inner surface of the upper heel part, heating from the side of the cocoon member containing the lunar core to thermoset the thermosetting lumber core to form the heel part (Patent Document 3), etc. It has been known.
- the present inventors laminated a plurality of cloth-like bodies formed using a linear body obtained by stretching a thermoplastic resin, Attention was focused on a laminate formed by heating and compressing so that a part of the filaments melts.
- Such a laminate is called a self-reinforced polymer composite (Self Reinforced Plastics: SRP), and is a fiber-reinforced plastic (F ⁇ Reinforced Plastics: FRP) in which an adhesive component and a reinforcing fiber are formed from the same resin component.
- the same kind of resin component refers to a resin composed of the same kind of components such as polyolefin, polyamide, and polyester.
- the present inventor diligently studied a new application of the laminate, which is a self-reinforced polymer composite material.
- a moon core which is a shoe component
- the inventors have found that the present invention is suitable.
- an object of the present invention is to provide a novel lunar core formed by a laminated body formed by laminating a plurality of cloth-like bodies and a shoe equipped with the same.
- the lunar core according to 1 above which is formed by adhering or sewing tanned leather to one side of the laminate.
- a shoe comprising the lunar core according to any one of 1 to 4 in a heel part.
- FIG. 1 The perspective view which shows one Embodiment of the shoes using the moon core which concerns on this invention
- a view of the right foot wearing shoes as seen from the heel side Exploded perspective view of shoe upper 1 is an exploded perspective view of the shoe shown in FIG.
- FIG. 1 is a perspective view showing an embodiment of a shoe using a moon core according to the present invention
- FIG. 2 is a front view of a laminate forming the moon core.
- 1 is a shoe and 2 is a lunar core provided on the heel of the shoe 1.
- the lunar core 2 is applied to the heel of an athletic shoe.
- the moon-shaped core 2 according to the present invention is formed by laminating a plurality of cloth-like bodies formed using a linear body obtained by stretching a thermoplastic resin so that a part of the linear body melts. It has at least a laminate 3 that is heated and compressed to integrate the cloth-like body into a single sheet.
- the laminate 3 is a fiber reinforced plastic (FRP) called self-reinforced polymer composite material (SRP) described above.
- FRP fiber reinforced plastic
- SRP self-reinforced polymer composite material
- FIG. 3 is a view of the state when the right foot wearing the shoe 1 has landed as seen from the heel side.
- the heel at the moment of landing is in a state of falling slightly to the outside, but when the landing foot gets weight, as shown by the dotted line, trying to buffer the impact at the time of landing
- a phenomenon called pronation occurs in which the heel is deformed while falling slightly inside.
- the general lunar core is intended mainly for the shape retention of the heel of the shoe, and since it was formed relatively hard, it was difficult to deform to follow the movement of the heel of such a foot. . For this reason, the shoe strongly collides with the heel and easily rubs the shoe, and the fit with the moving heel is inferior, and there is a problem from the viewpoint of increasing the stability by holding the heel of the foot.
- the moon-shaped core 2 having the laminated body 3 has a rigidity required for the moon-shaped core 2 and has an appropriate elasticity, so that it moves so that the heel of the foot falls when landing. In this case, it can be easily elastically deformed following the movement. For this reason, no matter what kind of behavior of the foot heel in the shoe 1, it can be reliably held following the movement of the heel, improving the fit with the heel and the stability of the foot heel. Can be increased. In addition, since the heel portion of the shoe 1 does not apply an excessive force to the heel of the foot, it is difficult for the shoe to rub.
- the moon core 2 having the laminate 3 is not only easily deformed but also has a property of quick return (high return elasticity) when returning from the deformed state to the original state. . That is, the lunar core 2 tries to quickly restore its original shape after elastically deforming following the movement of the foot heel. At this time, the movement of the heel to return to the original state in the shoe 1 works so that the high return elasticity of the lunar core 2 assists. For this reason, even if it deform
- this moon-shaped core 2 is excellent in the fit property with respect to a heel by the moderate elasticity inherent in the laminated body 3, it is possible to suppress the occurrence of an excessive gap between the heel of the foot and the mouth of the shoe 1. Moreover, since the moon-shaped core 2 can easily follow the movement of the heel, it is possible to suppress sand and the like from entering between the heel of the foot and the mouth of the shoe 1. Of course, the shape retaining property of the heel of the original shoe 1 can be maintained by the rigidity of the laminate 3 itself.
- the laminate 3 is formed of a thermoplastic resin
- the moon core 2 having the laminate 3 can be easily deformed by heating with, for example, a dryer.
- the heel of the shoe 1 can be freely shaped to match the shape of the heel of the user's foot, making it a tailor-made shoe It can be set to 1, and a feeling of fitting and a feeling of use can be improved further.
- the laminate 3 is composed of a linear body obtained by stretching a thermoplastic resin, the moon core 2 having the laminate 3 is not easily cracked or broken, and is excellent in repeated flexibility. Etc., and high durability. For this reason, it does not become difficult to return to the original shape by stepping on the heel like a conventional lunar core made of ume.
- a lunar core 2 cut out in a substantially half-moon shape from the laminate 3 is sandwiched between the upper 6 and the inner skin 7 corresponding to the heel portion of the shoe 1 as shown in FIG.
- the upper portion 8 having the moon core 2 is formed.
- the shell 6 has a middle window shape.
- the moon core 2 is provided so that the laminate 3 is exposed on the surface of the shoe 1. This not only gives an accent to the design of the appearance of the shoe 1, but as described above, when the moon core 2 is shaped by the heat of a dryer or the like, hot air is directly applied to the laminate 3 exposed on the surface. Since it can be sprayed and heated, it is a preferred embodiment because the shaping operation can be performed easily and efficiently.
- the lunar core 2 may be provided inside the upper shell so as not to be exposed on the surface in the same manner as a normal lunar core.
- this moon core 2 was provided in the shoe 1 by sewing, it is needless to say that it is not limited to this and may have an adhesive structure.
- the sole portion 9 such as an insole 91, an insole 92, and an outer sole 93 is attached to the upper portion 8 in which the lunar core 2 is provided in the heel portion, as in a normal shoe.
- the shoe 1 is completed.
- the laminated body 3 is formed by laminating a plurality of cloth-like bodies formed by using a linear body 4 obtained by stretching a thermoplastic resin. By heating and compressing so as to melt, the respective cloth-like bodies are integrated to form a single sheet. In the heat compression, after heating the cloth-like laminate, the heated cloth-like laminate may be compressed, or the cloth-like laminate may be heated and compressed simultaneously. It may be.
- the base layer that is a high melting point resin component means that a part of the linear body 4 is melted. Is heated at a temperature at which the surface layer, which is a low-melting resin component, does not melt and melts.
- the filament 4 has a structure having a low melting point resin component having a sea-island structure in a high melting point resin component, the high melting point resin component is not melted, and the temperature is such that the low melting point resin component having a sea island structure melts. It is to heat at. Thereby, the high melting point resin component in the filament 4 becomes a reinforcing fiber, and the low melting point resin component becomes an adhesive component, so that it has a high bending elastic modulus and excellent impact resistance, and between adjacent cloth-like bodies. Can be formed.
- thermoplastic resin constituting the filament 4 a resin having a large stretching effect, generally a crystalline resin is used.
- a resin having a large stretching effect generally a crystalline resin is used.
- olefin polymers such as high density polyethylene, high pressure low density polyethylene, polypropylene, and ethylene / propylene block copolymers.
- polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon 6 and nylon 66, and the like can also be used.
- olefin polymers such as high-density polyethylene, high-pressure method low-density polyethylene, and polypropylene are preferred because of their workability and economy, and their low specific gravity.
- the shape of the filament 4 is arbitrary as long as it can form a cloth-like body.
- tape, yarn, split yarn, monofilament, multifilament, etc. can be used.
- the filament 4 is twisted as necessary.
- flat filaments such as tape and yarn are preferred, and flat yarns that are tape-like filaments are particularly preferred.
- the thickness of the striate body 4 can be arbitrarily selected according to the purpose, but in general, a range of 50 to 10,000 decitex (dt) is desirable.
- the cloth-like body formed by the filament 4 is generally a woven fabric woven using the filament 4 as the warp 4A and the weft 4B.
- Examples of the weaving method of the woven fabric include plain weave, twill weave, oblique pattern weave, silk weave and double weave.
- a large number of linear bodies 4 are juxtaposed in one direction, and a large number of linear bodies 4 are juxtaposed thereon so as to intersect in an arbitrary angle direction, and the intersection is an adhesive such as a hot melt agent. It is also possible to use a cross-bonded cloth (Sof) joined by heat sealing or heat sealing.
- a multiaxial fiber base in which a large number of linear bodies 4 are arranged side by side in one direction, and a large number of linear bodies 4 are arranged in parallel so as to intersect in an arbitrary angle direction and connected by stitching yarns. It can also be used as a material.
- the fabric-like body may be a knitted fabric formed by the linear body 4.
- the number of laminated fabrics is appropriately set to 2 or more so that the lunar core 2 has a desired thickness and rigidity.
- each of the laminated cloth-like bodies is not limited to the same one, and the cloth-like bodies having different types, widths, thicknesses, stretch ratios, the number of driving, the weaving method, and the like of the line bodies 4 are laminated. May be.
- the cloth-like body which made the same kind of cloth-like body or the line-like body 4, the width
- the thickness of the laminate 3 is preferably 0.5 mm to 2.5 mm. When it becomes thinner than 0.5 mm, when this is used independently and the moon core 2 is formed, the intensity
- the moon core 2 is cut from the laminated body 3 so as to have a desired shape.
- the cloth-shaped body may be formed in advance so as to have a desired moon-shaped core shape, and a plurality of the cloth-shaped bodies may be stacked and heated and compressed to obtain the moon-shaped core 2.
- the moon-shaped core 2 obtained by these is shaped so as to be curved along the shape of the heel of the shoe 1 as necessary.
- such a laminate 3 is made of a thermoplastic resin, the specific gravity is low and the mechanical strength is high. For this reason, the light and strong moon core 2 can be obtained. It contributes to weight reduction of the shoes 1 by being light.
- the laminated body 3 is comprised by the linear body 4 obtained by extending
- ASTM D 1052 was applied mutatis mutandis, and the laminate 3 was cut as a test piece into a thickness of 1.2 mm, a width of 25 mm, and a length of 152 mm, and attached to the test machine so that it bends 90 ° using a loss tester. The test was repeated 50000 times to confirm the presence or absence of damage, but there was no damage. Thus, the laminate 3 has extremely high durability against bending.
- the moon-shaped core 2 is formed only by the laminated body 3.
- the moon-shaped core 2 is formed by the laminated body 3 and the tanned leather 23. ing. That is, the moon-shaped core 2 is formed by forming a laminated piece 22 by cutting the laminated body 3 into a predetermined shape, and carrying out a predetermined tanning process on the laminated piece 22 to obtain a wrinkle cut into a predetermined shape.
- the leather 23 is laminated.
- the total thickness of the lunar core 2 is preferably 5 mm or less (the total thickness of the tanned leather 23 is 2.5 mm or less). This is because when the total thickness of the moon core 2 exceeds 5 mm, generally the rigidity of the moon core 2 becomes too high and the merit of using the laminate 3 is reduced.
- FIG. 7 shows an example in which a leather core 23 is laminated on one side of a laminate piece 22.
- the leather 23 is arranged on the inner side (foot heel side) of the moon core 2 and the laminate piece 22 is arranged on the outside.
- the tanned leather 23 acts to absorb moisture such as water vapor coming from the surface of the foot and adjust to the foot.
- the lunar core 2 can also be constituted by sandwiching the leather 23 on both sides so as to sandwich the laminate piece 22 at the center.
- both surfaces become the surfaces of the leather 23
- the lunar core 2 having the function of allowing the leather 23 to be adapted to the feet is formed in a predetermined curved shape as described above, regardless of the direction of the inside and outside. can do.
- the laminate piece 22 and the tanned leather 23 are bonded together using an appropriate adhesive such as rubber, epoxy, hot melt, etc.
- the moon core 2 can be formed by sewing. Further, in the embodiment of FIG. 7, the laminated piece 22 and the tanned leather 23 cut into a predetermined shape are used. However, after bonding or sewing, it may be cut into a predetermined shape. Needless to say.
- the moon core 2 described above has been illustrated as having a substantially half-moon shape, the shape of the moon core 2 can be changed as appropriate in relation to the heel of the shoe used.
- ribs 24 can be extended on the shoe sole side.
- the rib 24 plays a role of holding a predetermined curved shape of the moon core 2 and can also function as an adhesion portion with the insole or the main bottom.
- the moon core 2 may be configured integrally with the insole 92 as shown in FIG. In this case, after cutting the part of the insole 92 and the moon core 2 integrally from the sheet-like laminate 3, the moon core 2 may be shaped by press molding or the like, or the sheet-like laminate 3 In addition, the integrated body of the insole 92 and the lunar core 2 may be cut after being pressed or the like.
- Both the high melting point resin component (polypropylene) and the low melting point resin component (propylene-ethylene random copolymer) are polyolefins and are the same kind of resin component.
- the resulting film was slit with leather (razor).
- a 10% relaxation heat treatment is performed in a hot air circulating oven at a temperature of 145 ° C. to obtain a flat yarn having a yarn width of 4.5 mm and a fineness of 1700 dt. It was.
- the obtained flat yarn was woven into a twill weave of 15 warps / 25.4 mm and 15 wefts / 25.4 mm using a slewer loom to obtain a cloth-like body.
- an adhesive film was obtained.
- the obtained four cloth-like bodies and the obtained three adhesive films become a cloth-like body / adhesive film / cloth-like body / adhesive film / cloth-like body / adhesive film / cloth-like body. Were alternately laminated to obtain a cross laminate.
- the obtained cross laminate was heated and pressed for 2 minutes at a press temperature of 145 ° C. and a pressure of 5 MPa using a hydraulic press, and then cooled and pressed for 2 minutes at a press temperature of 25 ° C. and a pressure of 5 MPa using a hydraulic press. Obtained.
- a PET spunlace nonwoven fabric having a weight per unit area of 30 g / m 2 and an EMA (ethylene-methyl acrylate copolymer) film having a thickness of 30 ⁇ m were laminated in the order of laminate / EMA film / nonwoven fabric.
- the laminate was pressed for 1 minute at a press temperature of 25 ° C. and a pressure of 0.5 MPa with a hydraulic press machine. A sheet was obtained.
- the obtained laminate sheet was punched into the shape of a moon core, heated to 130 ° C., press-molded with an aluminum die, and shaped to obtain a laminate moon core (1).
- the floor reaction force Fx in the left-right direction is measured using a force plate 9281B manufactured by Kistler Co., Ltd. when the first step of kicking in order to move forward from a stepped-on state with the tester landing. did. From the maximum value of the Fx value (the point at which the heel fell outward) to the minimum value of the Fx value (the point at which the heel fell inward) is regarded as a pronation operation.
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- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
The objective of the present invention is to provide: a novel counter formed from a laminate body resulting from laminating a plurality of sheets of cloth-like bodies; and a shoe provided with the counter. The objective is achieved by means of a counter (2) having at least the laminate body resulting from a plurality of sheets of cloth-like bodies formed using striated bodies obtained by stretching a thermoplastic resin being laminated, a portion of the striated bodies being heated/compressed in a manner so as to melt, and a shoe (1) having the counter (2) at the heel section thereof. Preferably, tanned leather is adhered or sewn to one or both surfaces of the laminate body.
Description
本発明は月形芯及び靴に関し、詳しくは、複数枚の布状体を積層してなる積層体によって形成された新規な月形芯及びこれを備えた靴に関する。
The present invention relates to a lunar wick and shoes, and more particularly to a novel lunar wick formed by a laminate formed by laminating a plurality of cloth-like bodies and a shoe provided with the same.
一般に、靴は、踵部の補強をするための芯材として月形芯(カウンターともいう。)を、甲皮と内皮との間に挟んだ状態で介在させている。この月形芯は、牛など動物の皮をなめしたヌメと称される生皮のほか、木材パルプを抄造した原紙に樹脂を含浸してなる含浸紙、合成樹脂、若しくは布に糊を含浸させたものなどが従来から広く用いられている。そして、この月形芯は、踵部の見栄えを良くし、足にフィットさせる上では、ヌメが最良であるとされてきた。
Generally, shoes have a lunar core (also called a counter) interposed between the upper and inner skin as a core material for reinforcing the buttocks. In addition to raw hides that are tanned animal skins such as cattle, this moon-shaped core is made by impregnating paper, synthetic resin, or cloth impregnated with resin on base paper made from wood pulp. Things have been widely used in the past. And this moon shaped core has been considered to be the best in terms of improving the appearance of the buttocks and fitting to the feet.
他方、ヌメ以外の月形芯としては、なめした生皮の片面に接着剤にて含浸紙を貼着してなるもの(特許文献1)、靴の踵部などの曲部に用いる月型などの靴用芯材の表面と裏面に、それぞれ水分含有率の異なる熱硬化性の接着剤を塗布してなるもの(特許文献2)、熱硬化性素材からなる月形芯をサンドイッチ状に挟持したストレッチ性の不織布ケミカルシートを甲皮踵部内面に用い、月形芯入り踵部材側から加熱して熱硬化性の月形芯を熱硬化して踵部に成形する(特許文献3)等の技術が知られている。
On the other hand, as a moon-shaped core other than Nume, one made by attaching impregnated paper with an adhesive to one side of a tanned rawhide (Patent Document 1), a moon mold used for a curved part such as a heel part of a shoe, etc. Stretch made by applying thermosetting adhesives with different moisture contents to the front and back surfaces of the shoe core material (Patent Document 2), sandwiching a moon core made of a thermosetting material in a sandwich shape Of non-woven non-woven chemical sheet on the inner surface of the upper heel part, heating from the side of the cocoon member containing the lunar core to thermoset the thermosetting lumber core to form the heel part (Patent Document 3), etc. It has been known.
従来のヌメは弾力性に乏しく、熱に弱く、悪臭があり、踵部を踏むと崩れて元に戻り難くなり、熱で踵部の線が変化し易く、また、ヌメに浸みこませた油が浸み出して靴の内面を汚す等の欠点があった。他方、特許文献2、3等のように熱硬化性樹脂を用いる場合には、熱硬化後の月形芯は、完全に形状が固定することになり、たとえ足形で成形した場合であっても、歩行時などに、ヌメを用いた場合に比べて足とのフィット感が劣るものであった。
Conventional ume has poor elasticity, is weak against heat, has a foul odor, and when it is stepped on the buttock, it becomes difficult to return to its original position, and the heel line is easily changed by heat. There was a defect such as oozing out and soiling the inner surface of shoes. On the other hand, when a thermosetting resin is used as in Patent Documents 2, 3, etc., the shape of the moon core after thermosetting is completely fixed, even if it is molded in a foot shape. When walking, the fit with the foot was inferior to the case of using ume.
本発明者は、靴の踵に使用する月形芯の素材について種々検討した結果、熱可塑性樹脂を延伸して得られた線条体を用いて形成された布状体を複数枚積層し、線条体の一部分が溶融するように加熱圧縮することによって形成された積層体に着目した。
As a result of various studies on the material of the lunar core used for the shoe heel, the present inventors laminated a plurality of cloth-like bodies formed using a linear body obtained by stretching a thermoplastic resin, Attention was focused on a laminate formed by heating and compressing so that a part of the filaments melts.
このような積層体は、自己強化高分子複合材料(Self Reinforced Plastics:SRP)と称され、接着成分と強化繊維が同種の樹脂成分から形成された繊維強化プラスチック(Fiber Reinforced Plastics:FRP)である。ここで、同種の樹脂成分とは、ポリオレフィン、ポリアミド、ポリエステルなど、同種の成分から構成された樹脂を指す。
Such a laminate is called a self-reinforced polymer composite (Self Reinforced Plastics: SRP), and is a fiber-reinforced plastic (F た Reinforced Plastics: FRP) in which an adhesive component and a reinforcing fiber are formed from the same resin component. . Here, the same kind of resin component refers to a resin composed of the same kind of components such as polyolefin, polyamide, and polyester.
本発明者は、この自己強化高分子複合材料である積層体の新たな用途について鋭意検討したところ、靴の部品である月形芯をこの積層体によって形成することによって、従来の月形芯では得ることのできなかった数々の格別な効果が得られ、特に、サッカー、ラグビー、野球、陸上等のフィールド競技やランニング、ウォーキング等の運動に使用される靴の踵部に使用される月形芯として好適であることを見出し、新規な本発明を完成するに至った。
The present inventor diligently studied a new application of the laminate, which is a self-reinforced polymer composite material. By forming a moon core, which is a shoe component, with this laminate, Numerous special effects that could not be obtained, especially the moon core used for the heel of shoes used for field sports such as soccer, rugby, baseball, track and field, running, walking, etc. As a result, the inventors have found that the present invention is suitable.
すなわち、本発明は、複数枚の布状体を積層してなる積層体によって形成された新規な月形芯及びこれを備えた靴を提供することを課題とする。
That is, an object of the present invention is to provide a novel lunar core formed by a laminated body formed by laminating a plurality of cloth-like bodies and a shoe equipped with the same.
本発明の他の課題は、以下の記載により明らかとなる。
Other problems of the present invention will become apparent from the following description.
上記課題は以下の各発明によって解決される。
The above problems are solved by the following inventions.
1.熱可塑性樹脂を延伸して得られた線条体を用いて形成された布状体を複数枚積層し、前記線条体の一部分が溶融するように加熱圧縮されてなる積層体を少なくとも有していることを特徴とする月形芯。
1. It has at least a laminate formed by laminating a plurality of cloth-like bodies formed using a linear body obtained by stretching a thermoplastic resin, and heat-compressed so that a part of the linear body melts. Moon-shaped core characterized by
2.前記積層体の片面に、鞣し皮革を接着又は縫着することによって形成されることを特徴とする前記1記載の月形芯。
2. 2. The lunar core according to 1 above, which is formed by adhering or sewing tanned leather to one side of the laminate.
3.前記積層体の両面に、鞣し皮革を接着又は縫着することによって形成されることを特徴とする前記1記載の月形芯。
3. 2. The lunar core according to 1 above, which is formed by bonding or sewing tanned leather on both sides of the laminate.
4.前記積層体の厚みを、0.5~2.5mmとすることを特徴とする前記1、2又は3記載の月形芯。
4. 4. The moon core according to the above 1, 2, or 3, wherein the thickness of the laminate is 0.5 to 2.5 mm.
5.前記1~4の何れか記載の月形芯を踵部に有していることを特徴とする靴。
5. A shoe comprising the lunar core according to any one of 1 to 4 in a heel part.
6.前記1、2又は4記載の月形芯を踵部に有している靴であって、前記積層体が、靴の表面に露出するように設けられていることを特徴とする靴。
6. A shoe having the lunar core according to any one of claims 1, 2, and 4 in a heel portion, wherein the laminated body is provided so as to be exposed on a surface of the shoe.
本発明によれば、複数枚の布状体を積層してなる積層体によって形成された新規な月形芯及びこれを備えた靴を提供することができる。
According to the present invention, it is possible to provide a novel lunar core formed by a laminated body formed by laminating a plurality of cloth-like bodies and a shoe equipped with the same.
以下、本発明の実施の形態について図面を用いて説明する。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
図1は、本発明に係る月形芯を用いた靴の一実施形態を示す斜視図、図2は、月形芯を形成する積層体の正面図である。
FIG. 1 is a perspective view showing an embodiment of a shoe using a moon core according to the present invention, and FIG. 2 is a front view of a laminate forming the moon core.
図1において、1は靴、2は靴1の踵部に設けられた月形芯である。ここでは、運動靴の踵部に月形芯2を適用した例を示している。
In FIG. 1, 1 is a shoe and 2 is a lunar core provided on the heel of the shoe 1. Here, an example is shown in which the lunar core 2 is applied to the heel of an athletic shoe.
本発明に係る月形芯2は、熱可塑性樹脂を延伸して得られた線条体を用いて形成された布状体を複数枚積層し、これを線条体の一部分が溶融するように加熱圧縮し、布状体を一体化して一枚のシート状とされた積層体3を少なくとも有している。
The moon-shaped core 2 according to the present invention is formed by laminating a plurality of cloth-like bodies formed using a linear body obtained by stretching a thermoplastic resin so that a part of the linear body melts. It has at least a laminate 3 that is heated and compressed to integrate the cloth-like body into a single sheet.
この積層体3は、前述した自己強化高分子複合材料(SRP)と称される繊維強化プラスチック(FRP)である。本発明者は、この積層体3を用いて形成された月形芯2について検討したところ、足の踵をホールドする効果を高め、スポーツ競技のような激しい動きを伴う際の足の踵の安定性を向上させることができることを見出した。
The laminate 3 is a fiber reinforced plastic (FRP) called self-reinforced polymer composite material (SRP) described above. The present inventor has examined the lunar core 2 formed using the laminate 3, and as a result, the effect of holding the foot heel is enhanced, and the stability of the foot heel when accompanied by intense movements such as sports competitions. It was found that the property can be improved.
すなわち、一般に足の踵は、踏み出しや着地の際に靴の中で常に動いている。例えば、図3は、靴1を履いた右足が着地した際の様子を踵側から見た図である。着地した瞬間の踵は、実線で示すように、やや外側に倒れた状態になっているが、その後、着地した足に体重が掛かると、着地時の衝撃を緩衝しようとして、点線で示すように、踵がやや内側に倒れながら変形するプロネーションと呼ばれる現象が起こる。一般的な月形芯は、専ら靴の踵部の保形が目的であり、比較的硬質に形成されていたため、このような足の踵の動きに追随するように変形し難いものであった。このため靴が踵と強く衝突して靴擦れを生じ易く、また、動きのある踵とのフィット性に劣り、足の踵をホールドして安定性を高める観点からは課題があった。
That is, in general, the footpad is always moving in the shoe when stepping on or landing. For example, FIG. 3 is a view of the state when the right foot wearing the shoe 1 has landed as seen from the heel side. As shown by the solid line, the heel at the moment of landing is in a state of falling slightly to the outside, but when the landing foot gets weight, as shown by the dotted line, trying to buffer the impact at the time of landing A phenomenon called pronation occurs in which the heel is deformed while falling slightly inside. The general lunar core is intended mainly for the shape retention of the heel of the shoe, and since it was formed relatively hard, it was difficult to deform to follow the movement of the heel of such a foot. . For this reason, the shoe strongly collides with the heel and easily rubs the shoe, and the fit with the moving heel is inferior, and there is a problem from the viewpoint of increasing the stability by holding the heel of the foot.
これに対し、積層体3を有する月形芯2は、月形芯2として要求される剛性を備えながらも、適度な弾性を有するため、着地時等に足の踵が倒れるような動きをした際に、その動きに追随して容易に弾性変形することができる。このため、靴1の中で足の踵がどのような挙動を示しても、踵の動きに追随して確実にホールドすることができ、踵とのフィット性を高めて足の踵の安定性を高めることができる。しかも、靴1の踵部が足の踵に対して無理な力を掛けることがないため、靴擦れも起きにくくなる。
On the other hand, the moon-shaped core 2 having the laminated body 3 has a rigidity required for the moon-shaped core 2 and has an appropriate elasticity, so that it moves so that the heel of the foot falls when landing. In this case, it can be easily elastically deformed following the movement. For this reason, no matter what kind of behavior of the foot heel in the shoe 1, it can be reliably held following the movement of the heel, improving the fit with the heel and the stability of the foot heel. Can be increased. In addition, since the heel portion of the shoe 1 does not apply an excessive force to the heel of the foot, it is difficult for the shoe to rub.
この積層体3を有する月形芯2は、単に変形し易いだけでなく、変形した状態から元の状態に戻る際の戻りが早い(戻り弾性が高い)性質を有していることが判った。つまり、月形芯2は、足の踵の動きに追随して弾性変形した後、迅速に元の形状に復元しようとする。このとき、踵が靴1の中で元の状態に戻ろうとする動きを、月形芯2の高い戻り弾性が補助するように働く。このため、着地時のプロネーションによって足の踵が内側に倒れるように変形しても、月形芯2の戻り弾性に補助されて迅速に元の状態に戻ることができるようになる。これによって、着地後の次の踏み出し動作に迅速に移行できるようになり、より俊敏な動作が可能となる。
It was found that the moon core 2 having the laminate 3 is not only easily deformed but also has a property of quick return (high return elasticity) when returning from the deformed state to the original state. . That is, the lunar core 2 tries to quickly restore its original shape after elastically deforming following the movement of the foot heel. At this time, the movement of the heel to return to the original state in the shoe 1 works so that the high return elasticity of the lunar core 2 assists. For this reason, even if it deform | transforms so that a heel of a foot may fall inward by the pronation at the time of landing, it will be able to return to an original state rapidly with the assistance of the return elasticity of the moon-shaped core 2. FIG. Thereby, it becomes possible to quickly shift to the next stepping operation after landing, and a more agile operation is possible.
また、この月形芯2は、積層体3本来の適度な弾性によって踵に対するフィット性に優れるため、足の踵と靴1の履き口との間に過大な隙間が生じることを抑制できる。また、月形芯2が踵の動きに容易に追随できるため、足の踵と靴1の履き口との間から内部に砂等が侵入することを抑制することができる。もちろん、積層体3自体が有する剛性によって月形芯本来の靴1の踵部の保形性も維持できる。
Moreover, since this moon-shaped core 2 is excellent in the fit property with respect to a heel by the moderate elasticity inherent in the laminated body 3, it is possible to suppress the occurrence of an excessive gap between the heel of the foot and the mouth of the shoe 1. Moreover, since the moon-shaped core 2 can easily follow the movement of the heel, it is possible to suppress sand and the like from entering between the heel of the foot and the mouth of the shoe 1. Of course, the shape retaining property of the heel of the original shoe 1 can be maintained by the rigidity of the laminate 3 itself.
積層体3は熱可塑性樹脂によって形成されているため、これを有する月形芯2は、例えばドライヤー等によって加熱することによって容易に変形させることもできる。例えば、靴1を履いた状態で月形芯2を加熱することで、靴1の踵部を使用者の足の踵の形状に合わせるように自由に形付けることができ、オーダーメイド感覚の靴1とすることができてフィット感、使用感をさらに向上させることができる。
Since the laminate 3 is formed of a thermoplastic resin, the moon core 2 having the laminate 3 can be easily deformed by heating with, for example, a dryer. For example, by heating the lunar core 2 with the shoe 1 on, the heel of the shoe 1 can be freely shaped to match the shape of the heel of the user's foot, making it a tailor-made shoe It can be set to 1, and a feeling of fitting and a feeling of use can be improved further.
さらに、積層体3は、熱可塑性樹脂を延伸して得られた線条体によって構成されているため、これを有する月形芯2は、割れ、折れ等が起き難く、繰り返しの屈曲性に優れる等、高い耐久性も有している。このため、従来のヌメからなる月形芯のように踵を踏むと崩れて元に戻り難くなるようなことはない。
Furthermore, since the laminate 3 is composed of a linear body obtained by stretching a thermoplastic resin, the moon core 2 having the laminate 3 is not easily cracked or broken, and is excellent in repeated flexibility. Etc., and high durability. For this reason, it does not become difficult to return to the original shape by stepping on the heel like a conventional lunar core made of ume.
本実施形態に示す靴1は、積層体3から略半月状に切り出した月形芯2を、図4に示すように靴1の踵部に相当する甲皮6と内皮7との間に挟んで縫着し、これによって月形芯2を有するアッパー部8を形成している。
In the shoe 1 shown in the present embodiment, a lunar core 2 cut out in a substantially half-moon shape from the laminate 3 is sandwiched between the upper 6 and the inner skin 7 corresponding to the heel portion of the shoe 1 as shown in FIG. Thus, the upper portion 8 having the moon core 2 is formed.
甲皮6は中窓形状のものを用いている。これによって、月形芯2は、積層体3が靴1の表面に露出するように設けられている。これは、靴1の外観のデザインにアクセントを与えるだけでなく、上述したように、月形芯2をドライヤー等の熱によって形付けする場合、表面に露出する積層体3に対して直接熱風を吹き付けて加熱することができるため、形付け作業を容易且つ効率的に行うことができることから好ましい態様である。
The shell 6 has a middle window shape. Thereby, the moon core 2 is provided so that the laminate 3 is exposed on the surface of the shoe 1. This not only gives an accent to the design of the appearance of the shoe 1, but as described above, when the moon core 2 is shaped by the heat of a dryer or the like, hot air is directly applied to the laminate 3 exposed on the surface. Since it can be sprayed and heated, it is a preferred embodiment because the shaping operation can be performed easily and efficiently.
しかし、月形芯2は通常の月形芯と同様に表面に露出させないように甲皮の内部に設けてもよいことはもちろんである。また、この月形芯2は縫着によって靴1に設けるようにしたが、これに限らず接着構造のものであっても良い事は言うまでも無い。
However, of course, the lunar core 2 may be provided inside the upper shell so as not to be exposed on the surface in the same manner as a normal lunar core. Moreover, although this moon core 2 was provided in the shoe 1 by sewing, it is needless to say that it is not limited to this and may have an adhesive structure.
踵部に月形芯2が設けられたアッパー部8には、図5に示すように、通常の靴と同様に、中敷91、中底92、アウターソール93等のソール部9が取り付けられ、靴1が完成する。
As shown in FIG. 5, the sole portion 9 such as an insole 91, an insole 92, and an outer sole 93 is attached to the upper portion 8 in which the lunar core 2 is provided in the heel portion, as in a normal shoe. The shoe 1 is completed.
次に、月形芯2を形成する積層体3について述べる。
Next, the laminate 3 that forms the moon core 2 will be described.
積層体3は、図2に示すように、熱可塑性樹脂を延伸して得られた線条体4を用いて形成された布状体を複数枚積層し、これを線条体4の一部分が溶融するように加熱圧縮することによって、各布状体を一体化して一枚のシート状となるように形成されている。加熱圧縮は、布状体の積層物を加熱した後に、加熱された布状体の積層物に対して圧縮してもよいし、布状体の積層物に対して加熱と圧縮を同時に行うようにしてもよい。
As shown in FIG. 2, the laminated body 3 is formed by laminating a plurality of cloth-like bodies formed by using a linear body 4 obtained by stretching a thermoplastic resin. By heating and compressing so as to melt, the respective cloth-like bodies are integrated to form a single sheet. In the heat compression, after heating the cloth-like laminate, the heated cloth-like laminate may be compressed, or the cloth-like laminate may be heated and compressed simultaneously. It may be.
なお、線条体4の一部分が溶融するようにとは、例えば線条体4が、基層とこの基層よりも融点が低い表面層とを有する層構造である場合、高融点樹脂成分である基層が溶融せず、低融点樹脂成分である表面層が溶融する程度の温度で加熱を行うことである。また、線条体4が、高融点樹脂成分中に海島構造の低融点樹脂成分を有する構造である場合、高融点樹脂成分は溶融せず、海島構造の低融点樹脂成分が溶融する程度の温度で加熱を行うことである。これにより、線条体4における高融点樹脂成分が強化繊維となり、低融点樹脂成分が接着成分となることにより、高い曲げ弾性率を有し、耐衝撃性に優れると共に、隣接する布状体間が強固に接着された積層体3を形成することができる。
For example, when the linear body 4 has a layer structure having a base layer and a surface layer having a melting point lower than that of the base layer, the base layer that is a high melting point resin component means that a part of the linear body 4 is melted. Is heated at a temperature at which the surface layer, which is a low-melting resin component, does not melt and melts. When the filament 4 has a structure having a low melting point resin component having a sea-island structure in a high melting point resin component, the high melting point resin component is not melted, and the temperature is such that the low melting point resin component having a sea island structure melts. It is to heat at. Thereby, the high melting point resin component in the filament 4 becomes a reinforcing fiber, and the low melting point resin component becomes an adhesive component, so that it has a high bending elastic modulus and excellent impact resistance, and between adjacent cloth-like bodies. Can be formed.
線条体4を構成する熱可塑性樹脂としては、延伸効果の大きい樹脂、一般には結晶性樹脂が使用される。具体的には、高密度ポリエチレン、高圧法低密度ポリエチレン、ポリプロピレン、エチレン・プロピレンブロック共重合体等のオレフィン系重合体が挙げられる。この他、ポリエチレンテレフタレート、ポリブチレンテレフタレート等のポリエステル、ナイロン6、ナイロン66等のポリアミド等を用いることもできる。中でも加工性と経済性、さらには比重の小ささから高密度ポリエチレン、高圧法低密度ポリエチレン、ポリプロピレン等のオレフィン系重合体が好ましい。
As the thermoplastic resin constituting the filament 4, a resin having a large stretching effect, generally a crystalline resin is used. Specific examples include olefin polymers such as high density polyethylene, high pressure low density polyethylene, polypropylene, and ethylene / propylene block copolymers. In addition, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon 6 and nylon 66, and the like can also be used. Of these, olefin polymers such as high-density polyethylene, high-pressure method low-density polyethylene, and polypropylene are preferred because of their workability and economy, and their low specific gravity.
また、線条体4の形状は、布状体を形成し得るものであれば任意である。例えば、テープ、ヤーン、スプリットヤーン、モノフィラメント、マルチフィラメント等を用いることができる。線条体4は必要に応じて撚糸される。中でもテープ、ヤーン等の扁平な線条体が好ましく、特にテープ状線条体であるフラットヤーンが好ましい。
Moreover, the shape of the filament 4 is arbitrary as long as it can form a cloth-like body. For example, tape, yarn, split yarn, monofilament, multifilament, etc. can be used. The filament 4 is twisted as necessary. Of these, flat filaments such as tape and yarn are preferred, and flat yarns that are tape-like filaments are particularly preferred.
線条体4の太さは目的に応じて任意に選定することができるが、一般的には、50~10000デシテックス(dt)の範囲が望ましい。
The thickness of the striate body 4 can be arbitrarily selected according to the purpose, but in general, a range of 50 to 10,000 decitex (dt) is desirable.
線条体4によって形成される布状体は、図2に例示したように、線条体4を経糸4A及び緯糸4Bに使用して織成された織布が一般的である。織布の織り方は、例えば平織、綾織、斜紋織、畦織、二重織等が挙げられる。
As illustrated in FIG. 2, the cloth-like body formed by the filament 4 is generally a woven fabric woven using the filament 4 as the warp 4A and the weft 4B. Examples of the weaving method of the woven fabric include plain weave, twill weave, oblique pattern weave, silk weave and double weave.
その他、多数の線条体4を一方向に並設し、その上に任意の角度方向に交差するように多数の線条体4を並設して、その交点をホットメルト剤等の接着剤を用いて、あるいは熱融着によって接合した交差結合布(ソフ)とすることもできる。また、多数の線条体4を一方向に並設し、その上に任意の角度方向に交差するように多数の線条体4を並設して、ステッチング糸で連結した多軸繊維基材とすることもできる。さらに、布状体は線条体4によって形成した編物でもよい。
In addition, a large number of linear bodies 4 are juxtaposed in one direction, and a large number of linear bodies 4 are juxtaposed thereon so as to intersect in an arbitrary angle direction, and the intersection is an adhesive such as a hot melt agent. It is also possible to use a cross-bonded cloth (Sof) joined by heat sealing or heat sealing. In addition, a multiaxial fiber base in which a large number of linear bodies 4 are arranged side by side in one direction, and a large number of linear bodies 4 are arranged in parallel so as to intersect in an arbitrary angle direction and connected by stitching yarns. It can also be used as a material. Further, the fabric-like body may be a knitted fabric formed by the linear body 4.
布状体の積層枚数は、月形芯2が所望の厚みや剛性となるように2枚以上で適宜設定される。このとき、積層される布状体の各々は同一のものに限らず、線条体4の種類、幅、厚み、延伸倍率、打ち込み本数、織り方等を異ならせた布状体同士を積層してもよい。
The number of laminated fabrics is appropriately set to 2 or more so that the lunar core 2 has a desired thickness and rigidity. At this time, each of the laminated cloth-like bodies is not limited to the same one, and the cloth-like bodies having different types, widths, thicknesses, stretch ratios, the number of driving, the weaving method, and the like of the line bodies 4 are laminated. May be.
また、図6に示すように、積層体3を形成する際、同様の布状体又は線条体4の種類、幅、厚み、延伸倍率、打ち込み本数、織り方等を異ならせた布状体によって、月形芯2の大きさよりも小さくなるように形成した小布状体21を部分的に積層することで、強度や剛性を部分的に異ならせた月形芯2を得るようにしてもよい。
Moreover, as shown in FIG. 6, when forming the laminated body 3, the cloth-like body which made the same kind of cloth-like body or the line-like body 4, the width | variety, thickness, the draw ratio, the number of implantations, the weaving method etc. different. Accordingly, by partially laminating the small cloth-like bodies 21 formed so as to be smaller than the size of the moon core 2, the moon core 2 having partially different strength and rigidity may be obtained. Good.
積層体3の厚みは、0.5mm~2.5mmとすることが好ましい。0.5mmよりも薄くなると、これを単独で使用して月形芯2を形成した場合、月形芯2としての強度が得難くなる。また、2.5mmを超えるようになると、月形芯2の剛性が高くなりすぎ、積層体3を月形芯2に使用することのメリットが得難くなる。
The thickness of the laminate 3 is preferably 0.5 mm to 2.5 mm. When it becomes thinner than 0.5 mm, when this is used independently and the moon core 2 is formed, the intensity | strength as the moon core 2 will become difficult to obtain. Moreover, when it exceeds 2.5 mm, the rigidity of the moon core 2 becomes too high, and it becomes difficult to obtain the merit of using the laminated body 3 for the moon core 2.
月形芯2は、積層体3から所望の形状となるように裁断される。また、予め布状体を所望の月形芯形状となるように形成しておき、この布状体を複数枚積層し、加熱圧縮することによって月形芯2を得るようにしてもよい。これらによって得られた月形芯2は、必要に応じて靴1の踵部の形状に沿って湾曲するように形付けされる。
The moon core 2 is cut from the laminated body 3 so as to have a desired shape. Alternatively, the cloth-shaped body may be formed in advance so as to have a desired moon-shaped core shape, and a plurality of the cloth-shaped bodies may be stacked and heated and compressed to obtain the moon-shaped core 2. The moon-shaped core 2 obtained by these is shaped so as to be curved along the shape of the heel of the shoe 1 as necessary.
このような積層体3は、熱可塑性樹脂で構成されていることから比重が低く軽量であり、機械的強度も高い。このため、軽くて強度の高い月形芯2を得ることができる。軽いことにより、靴1の軽量化にも寄与する。
Since such a laminate 3 is made of a thermoplastic resin, the specific gravity is low and the mechanical strength is high. For this reason, the light and strong moon core 2 can be obtained. It contributes to weight reduction of the shoes 1 by being light.
また、積層体3は、熱可塑性樹脂を延伸して得られた線条体4によって構成されているため、この積層体3を有する月形芯2は、割れ、折れ等が起き難く、繰り返しの屈曲性に優れる等、高い耐久性も有する。このため、ヌメのように踵を踏むと崩れて元に戻り難くなることはない。
Moreover, since the laminated body 3 is comprised by the linear body 4 obtained by extending | stretching a thermoplastic resin, the moon-shaped core 2 which has this laminated body 3 does not easily break, bend, etc., and repeats. It also has high durability such as excellent flexibility. For this reason, if you step on the casket like Nume, it will not be difficult to return to the original.
即ち、ASTM D 1052を準用して、試験片として積層体3を厚み1.2mm、幅25mm、長さ152mmに裁断し、ロス式試験機を用い、90°屈曲するように試験機に取り付け、50000回繰り返し試験を行って破損の有無を確認したが、破損は無かった。このように、積層体3は屈曲に対して極めて高い耐久性を有している。
That is, ASTM D 1052 was applied mutatis mutandis, and the laminate 3 was cut as a test piece into a thickness of 1.2 mm, a width of 25 mm, and a length of 152 mm, and attached to the test machine so that it bends 90 ° using a loss tester. The test was repeated 50000 times to confirm the presence or absence of damage, but there was no damage. Thus, the laminate 3 has extremely high durability against bending.
次に、図7に示す実施の形態について述べる。
Next, the embodiment shown in FIG. 7 will be described.
以上説明した実施形態では、積層体3のみによって月形芯2を形成するようにしたが、図7に示す実施形態では、積層体3と鞣し皮革23とで月形芯2を形成するようにしている。すなわち、この月形芯2は、積層体3を所定の形状に切断することによって積層体片22を形成し、この積層体片22に、所定の鞣し加工を行って所定の形状に切断した鞣し皮革23を積層したものである。
In the embodiment described above, the moon-shaped core 2 is formed only by the laminated body 3. However, in the embodiment shown in FIG. 7, the moon-shaped core 2 is formed by the laminated body 3 and the tanned leather 23. ing. That is, the moon-shaped core 2 is formed by forming a laminated piece 22 by cutting the laminated body 3 into a predetermined shape, and carrying out a predetermined tanning process on the laminated piece 22 to obtain a wrinkle cut into a predetermined shape. The leather 23 is laminated.
この時、月形芯2の総厚みは5mm以下(鞣し皮革23の総厚みが2.5mm以下)とすることが好ましい。月形芯2の総厚みが5mmを超えるようになると、一般的に月形芯2の剛性が高くなりすぎ、積層体3を用いるメリットが少なくなるからである。
At this time, the total thickness of the lunar core 2 is preferably 5 mm or less (the total thickness of the tanned leather 23 is 2.5 mm or less). This is because when the total thickness of the moon core 2 exceeds 5 mm, generally the rigidity of the moon core 2 becomes too high and the merit of using the laminate 3 is reduced.
図7に示す月形芯2は、積層体片22の片面に鞣し皮革23を積層した例を示している。このように積層体片22の片面に鞣し皮革23を積層した場合、月形芯2の内側(足の踵側)に鞣し皮革23、外側に積層体片22が配置されるようにすることが好ましい。鞣し皮革23が、足の表面から出る水蒸気等の水分を吸収し、足になじむように作用するからである。
7 shows an example in which a leather core 23 is laminated on one side of a laminate piece 22. In this way, when the leather 23 is laminated on one side of the laminate piece 22, the leather 23 is arranged on the inner side (foot heel side) of the moon core 2 and the laminate piece 22 is arranged on the outside. preferable. This is because the tanned leather 23 acts to absorb moisture such as water vapor coming from the surface of the foot and adjust to the foot.
また、図示しないが、積層体片22を中心にサンドイッチするように、その両面に鞣し皮革23を積層することによって月形芯2を構成することもできる。この場合はいずれの面も鞣し皮革23の面となるため、内側外側の向きを選ばずに、上記のように鞣し皮革23が足になじむ作用を有する月形芯2を所定の湾曲形状に形成することができる。
Further, although not shown, the lunar core 2 can also be constituted by sandwiching the leather 23 on both sides so as to sandwich the laminate piece 22 at the center. In this case, since both surfaces become the surfaces of the leather 23, the lunar core 2 having the function of allowing the leather 23 to be adapted to the feet is formed in a predetermined curved shape as described above, regardless of the direction of the inside and outside. can do.
なお、鞣し皮革23を積層した月形芯2の作製に当たって、積層体片22と鞣し皮革23は、例えばゴム系、エポキシ系、ホットメルト系等の適宜接着剤を用いて接着する他、これらを縫着することにより月形芯2を形成することができる。また、図7の実施の形態においては、所定の形状に切断した積層体片22と鞣し皮革23を用いているが、接着又は縫着した後に、所定の形状に切断を行ってもよいことは言うまでも無い。
In preparing the lunar core 2 in which the tanned leather 23 is laminated, the laminate piece 22 and the tanned leather 23 are bonded together using an appropriate adhesive such as rubber, epoxy, hot melt, etc. The moon core 2 can be formed by sewing. Further, in the embodiment of FIG. 7, the laminated piece 22 and the tanned leather 23 cut into a predetermined shape are used. However, after bonding or sewing, it may be cut into a predetermined shape. Needless to say.
以上説明した月形芯2は、略半月状に形成されたものを例示したが、月形芯2の形状は、使用される靴の踵部との関係で適宜変更することができる。例えば、図8に示すように、靴底側にリブ24を延設することもできる。このリブ24は、月形芯2の所定の湾曲形状を保持する役目を果たすと共に、中底や本底等との接着部位として機能させることもできる。
Although the moon core 2 described above has been illustrated as having a substantially half-moon shape, the shape of the moon core 2 can be changed as appropriate in relation to the heel of the shoe used. For example, as shown in FIG. 8, ribs 24 can be extended on the shoe sole side. The rib 24 plays a role of holding a predetermined curved shape of the moon core 2 and can also function as an adhesion portion with the insole or the main bottom.
また、月形芯2は、図9に示すように、中底92と一体的に構成してもよい。この場合、シート状の積層体3から中底92と月形芯2の部位を一体に裁断した後、プレス成形等によって月形芯2を形付けしてもよいし、シート状の積層体3に中底92と月形芯2との一体物をプレス成形等した後に、裁断するようにしてもよい。
The moon core 2 may be configured integrally with the insole 92 as shown in FIG. In this case, after cutting the part of the insole 92 and the moon core 2 integrally from the sheet-like laminate 3, the moon core 2 may be shaped by press molding or the like, or the sheet-like laminate 3 In addition, the integrated body of the insole 92 and the lunar core 2 may be cut after being pressed or the like.
以下に、本発明の実施例について説明するが、本発明はかかる実施例により限定されない。
Examples of the present invention will be described below, but the present invention is not limited to these examples.
(実施例1)
高融点樹脂成分としてポリプロピレン(MFR=0.4g/10分、重量平均分子量Mw=630,000、融解ピーク温度164℃)と、低融点樹脂成分としてプロピレン-エチレンランダム共重合体(MFR=7.0g/10分、重量平均分子量Mw=220,000、融解ピーク温度125℃)とを用いて、インフレーション成形法によって、低融点樹脂成分を両外層とし、高融点樹脂成分を中間層とした3層フィルム(層厚み比1/8/1)を得た。 (Example 1)
Polypropylene (MFR = 0.4 g / 10 min, weight average molecular weight Mw = 630,000, melting peak temperature 164 ° C.) as the high melting point resin component and propylene-ethylene random copolymer (MFR = 7. 5) as the low melting point resin component. 3 layers with a low melting point resin component as both outer layers and a high melting point resin component as an intermediate layer by an inflation molding method using 0 g / 10 min, weight average molecular weight Mw = 220,000, melting peak temperature 125 ° C.) A film (layer thickness ratio 1/8/1) was obtained.
高融点樹脂成分としてポリプロピレン(MFR=0.4g/10分、重量平均分子量Mw=630,000、融解ピーク温度164℃)と、低融点樹脂成分としてプロピレン-エチレンランダム共重合体(MFR=7.0g/10分、重量平均分子量Mw=220,000、融解ピーク温度125℃)とを用いて、インフレーション成形法によって、低融点樹脂成分を両外層とし、高融点樹脂成分を中間層とした3層フィルム(層厚み比1/8/1)を得た。 (Example 1)
Polypropylene (MFR = 0.4 g / 10 min, weight average molecular weight Mw = 630,000, melting peak temperature 164 ° C.) as the high melting point resin component and propylene-ethylene random copolymer (MFR = 7. 5) as the low melting point resin component. 3 layers with a low melting point resin component as both outer layers and a high melting point resin component as an intermediate layer by an inflation molding method using 0 g / 10 min, weight average molecular weight Mw = 220,000, melting peak temperature 125 ° C.) A film (
高融点樹脂成分(ポリプロピレン)と、低融点樹脂成分(プロピレン-エチレンランダム共重合体)は、何れもポリオレフィンであり、同種の樹脂成分である。
Both the high melting point resin component (polypropylene) and the low melting point resin component (propylene-ethylene random copolymer) are polyolefins and are the same kind of resin component.
得られたフィルムを、レザー(razor)でスリットした。次いで、温度110~120℃の熱板上で7倍に延伸した後、温度145℃の熱風循環式オーブン内で10%の弛緩熱処理を行い、糸巾4.5mm、繊度1700dtのフラットヤーンを得た。
The resulting film was slit with leather (razor). Next, after stretching 7 times on a hot plate at a temperature of 110 to 120 ° C., a 10% relaxation heat treatment is performed in a hot air circulating oven at a temperature of 145 ° C. to obtain a flat yarn having a yarn width of 4.5 mm and a fineness of 1700 dt. It was.
得られたフラットヤーンを、スルーザー織機を用いて、経糸15本/25.4mm、緯糸15本/25.4mmの綾織に織成することによって布状体を得た。
The obtained flat yarn was woven into a twill weave of 15 warps / 25.4 mm and 15 wefts / 25.4 mm using a slewer loom to obtain a cloth-like body.
一方、低融点樹脂成分としてプロピレン-エチレンランダム共重合体(MFR=7.0g/10分、重量平均分子量Mw=220,000、融解ピーク温度125℃)と、高融点樹脂成分としてポリプロピレン(MFR=1.9g/10分、重量平均分子量Mw=500,000、融解ピーク温度161℃)とを、重量比率として、低融点樹脂成分:高融点樹脂成分=80:20で混合して、インフレーション成形法によって接着用フィルムを得た。
On the other hand, propylene-ethylene random copolymer (MFR = 7.0 g / 10 min, weight average molecular weight Mw = 220,000, melting peak temperature 125 ° C.) as a low melting point resin component and polypropylene (MFR = 1.9 g / 10 min, weight average molecular weight Mw = 500,000, melting peak temperature 161 ° C.) as a weight ratio, and mixed at a low melting point resin component: high melting point resin component = 80: 20, and subjected to an inflation molding method. Thus, an adhesive film was obtained.
得られた布状体4枚と、得られた接着用フィルム3枚を、布状体/接着用フィルム/布状体/接着用フィルム/布状体/接着用フィルム/布状体となるように交互に積層してクロス積層物を得た。
The obtained four cloth-like bodies and the obtained three adhesive films become a cloth-like body / adhesive film / cloth-like body / adhesive film / cloth-like body / adhesive film / cloth-like body. Were alternately laminated to obtain a cross laminate.
得られたクロス積層物を、油圧式プレス機でプレス温度145℃、圧力5MPaで2分間加熱プレスした後、油圧式プレス機でプレス温度25℃、圧力5MPaで2分間冷却プレスして積層体を得た。
The obtained cross laminate was heated and pressed for 2 minutes at a press temperature of 145 ° C. and a pressure of 5 MPa using a hydraulic press, and then cooled and pressed for 2 minutes at a press temperature of 25 ° C. and a pressure of 5 MPa using a hydraulic press. Obtained.
得られた積層体の片面に、目付重量30g/m2のPETスパンレース不織布と、厚み30μmのEMA(エチレン-アクリル酸メチル共重合体)フィルムを、積層体/EMAフィルム/不織布の順に積層し、油圧式プレス機でプレス温度125℃、圧力0.5MPaで1分間プレスした後、油圧式プレス機でプレス温度25℃、圧力0.5MPaで1分間プレスして厚さ1.0mmの積層体シートを得た。
On one side of the obtained laminate, a PET spunlace nonwoven fabric having a weight per unit area of 30 g / m 2 and an EMA (ethylene-methyl acrylate copolymer) film having a thickness of 30 μm were laminated in the order of laminate / EMA film / nonwoven fabric. After pressing for 1 minute at a press temperature of 125 ° C. and a pressure of 0.5 MPa with a hydraulic press machine, the laminate was pressed for 1 minute at a press temperature of 25 ° C. and a pressure of 0.5 MPa with a hydraulic press machine. A sheet was obtained.
得られた積層体シートを月形芯の形状に打抜いた後、130℃に加熱し、アルミ型にてプレス成形して形付けし、積層体月形芯(1)を得た。
The obtained laminate sheet was punched into the shape of a moon core, heated to 130 ° C., press-molded with an aluminum die, and shaped to obtain a laminate moon core (1).
(比較例1)
厚さ1mmの含浸紙を月形芯の形状に打抜いて月形芯(2)を得た。 (Comparative Example 1)
An impregnated paper having a thickness of 1 mm was punched into the shape of a moon core to obtain a moon core (2).
厚さ1mmの含浸紙を月形芯の形状に打抜いて月形芯(2)を得た。 (Comparative Example 1)
An impregnated paper having a thickness of 1 mm was punched into the shape of a moon core to obtain a moon core (2).
<評価方法>
実施例1及び比較例1で得られた月形芯を用いて、26.5cmのフットサル用靴を製造し、以下の評価方法に基づき俊敏性の効果を評価した。 <Evaluation method>
Using the lunar core obtained in Example 1 and Comparative Example 1, a 26.5 cm futsal shoe was manufactured, and the effect of agility was evaluated based on the following evaluation method.
実施例1及び比較例1で得られた月形芯を用いて、26.5cmのフットサル用靴を製造し、以下の評価方法に基づき俊敏性の効果を評価した。 <Evaluation method>
Using the lunar core obtained in Example 1 and Comparative Example 1, a 26.5 cm futsal shoe was manufactured, and the effect of agility was evaluated based on the following evaluation method.
試技者に当該靴を履かせ、足踏みした状態から前進するために蹴り出した一歩目が着床した際における、左右方向の床反力Fxを、キスラー(株)製フォースプレート9281Bを用いて測定した。Fx値の最大値(踵が外側に倒れた点)から、Fx値の最小値(踵が内側に倒れた点)までをプロネーション動作と見なす。
The floor reaction force Fx in the left-right direction is measured using a force plate 9281B manufactured by Kistler Co., Ltd. when the first step of kicking in order to move forward from a stepped-on state with the tester landing. did. From the maximum value of the Fx value (the point at which the heel fell outward) to the minimum value of the Fx value (the point at which the heel fell inward) is regarded as a pronation operation.
試技者1名あたり各フットサル用靴について5回ずつの試技を行い、それぞれのプロネーション動作時間の平均値を求めた。その結果を表1に示す。また、試技者の身長及び体重も表1に示す。
[5] For each futsal shoe per tester, five trials were performed, and the average value of each pronation operation time was obtained. The results are shown in Table 1. Table 1 also shows the height and weight of the tester.
<評価>
表1より、実施例1の積層体月形芯(1)を用いた靴の場合、比較例1の月形芯(2)を用いた靴の場合と比較して、プロネーション動作時間が短縮でき、着地後の次の踏み出し動作に迅速に移行できることがわかり、すなわち俊敏性が向上していると言える。 <Evaluation>
From Table 1, in the case of the shoe using the laminated moon core (1) of Example 1, the pronation operation time is shortened compared to the case of the shoe using the moon core (2) of Comparative Example 1. It can be said that it can quickly move to the next stepping action after landing, that is, it can be said that agility is improved.
表1より、実施例1の積層体月形芯(1)を用いた靴の場合、比較例1の月形芯(2)を用いた靴の場合と比較して、プロネーション動作時間が短縮でき、着地後の次の踏み出し動作に迅速に移行できることがわかり、すなわち俊敏性が向上していると言える。 <Evaluation>
From Table 1, in the case of the shoe using the laminated moon core (1) of Example 1, the pronation operation time is shortened compared to the case of the shoe using the moon core (2) of Comparative Example 1. It can be said that it can quickly move to the next stepping action after landing, that is, it can be said that agility is improved.
1:靴
2:月形芯
21:小布状体
22:積層体片
23:鞣し皮革
24:リブ
3:積層体
4:線条体
4A:経糸
4B:緯糸
6:甲皮
7:内皮
8:アッパー部
9:ソール部
91:中敷
92:中底
93:アウターソール
1: Shoe 2: Moon-shaped core 21: Small cloth body 22: Laminate piece 23: Wrinkled leather 24: Rib 3: Laminate body 4: Striated body 4A: Warp 4B: Weft 6: Upper 7: Endothelium 8: Upper part 9: Sole part 91: Insole 92: Insole 93: Outer sole
2:月形芯
21:小布状体
22:積層体片
23:鞣し皮革
24:リブ
3:積層体
4:線条体
4A:経糸
4B:緯糸
6:甲皮
7:内皮
8:アッパー部
9:ソール部
91:中敷
92:中底
93:アウターソール
1: Shoe 2: Moon-shaped core 21: Small cloth body 22: Laminate piece 23: Wrinkled leather 24: Rib 3: Laminate body 4: Striated body 4A: Warp 4B: Weft 6: Upper 7: Endothelium 8: Upper part 9: Sole part 91: Insole 92: Insole 93: Outer sole
Claims (6)
- 熱可塑性樹脂を延伸して得られた線条体を用いて形成された布状体を複数枚積層し、前記線条体の一部分が溶融するように加熱圧縮されてなる積層体を少なくとも有していることを特徴とする月形芯。 It has at least a laminate formed by laminating a plurality of cloth-like bodies formed using a linear body obtained by stretching a thermoplastic resin, and heat-compressed so that a part of the linear body melts. Moon-shaped core characterized by
- 前記積層体の片面に、鞣し皮革を接着又は縫着することによって形成されることを特徴とする請求項1記載の月形芯。 The moon core according to claim 1, wherein the lumber core is formed by adhering or sewing tanned leather to one side of the laminate.
- 前記積層体の両面に、鞣し皮革を接着又は縫着することによって形成されることを特徴とする請求項1記載の月形芯。 The lunar core according to claim 1, wherein the lumber core is formed by bonding or sewing tanned leather on both sides of the laminate.
- 前記積層体の厚みを、0.5~2.5mmとすることを特徴とする請求項1、2又は3記載の月形芯。 The moon core according to claim 1, 2 or 3, wherein the thickness of the laminate is 0.5 to 2.5 mm.
- 請求項1~4の何れか記載の月形芯を踵部に有していることを特徴とする靴。 A shoe characterized by having the lunar core according to any one of claims 1 to 4 in a heel part.
- 請求項1、2又は4記載の月形芯を踵部に有している靴であって、前記積層体が、靴の表面に露出するように設けられていることを特徴とする靴。
5. A shoe having the lunar core according to claim 1, 2, or 4, wherein the laminated body is provided so as to be exposed on a surface of the shoe.
Priority Applications (1)
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JP2016531205A JPWO2016002412A1 (en) | 2014-07-03 | 2015-06-01 | Moon core and shoes |
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JP2014138088 | 2014-07-03 | ||
JP2014-138088 | 2014-07-03 |
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WO2016002412A1 true WO2016002412A1 (en) | 2016-01-07 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2015/065783 WO2016002412A1 (en) | 2014-07-03 | 2015-06-01 | Counter and shoe |
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JP (1) | JPWO2016002412A1 (en) |
TW (1) | TW201603738A (en) |
WO (1) | WO2016002412A1 (en) |
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CN109890236A (en) * | 2016-10-26 | 2019-06-14 | 耐克创新有限合伙公司 | Footwear heel spring arrangement |
US10897956B2 (en) | 2018-12-21 | 2021-01-26 | Nike, Inc. | Footwear article with asymmetric ankle collar |
JP2021090602A (en) * | 2019-12-10 | 2021-06-17 | フェアストーン株式会社 | Shoe for child |
US11191321B2 (en) | 2019-02-13 | 2021-12-07 | Nike, Inc. | Footwear heel support device |
US11191320B2 (en) | 2018-12-28 | 2021-12-07 | Nike, Inc. | Footwear with vertically extended heel counter |
US11219274B2 (en) | 2018-12-21 | 2022-01-11 | Nike, Inc. | Footwear article with tongue reinforcer |
US11304477B2 (en) | 2016-10-26 | 2022-04-19 | Nike, Inc. | Footwear heel spring device |
US11344077B2 (en) | 2018-12-28 | 2022-05-31 | Nike, Inc. | Footwear article with collar elevator |
US11464287B2 (en) | 2018-12-28 | 2022-10-11 | Nike, Inc. | Footwear element with locating pegs and method of manufacturing an article of footwear |
US11470919B2 (en) | 2018-12-28 | 2022-10-18 | Nike, Inc. | Heel structure with locating pegs and method of manufacturing an article of footwear |
US11758972B2 (en) | 2018-12-21 | 2023-09-19 | Nike, Inc. | Footwear article with collar elevator |
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