WO2009122821A1 - シューズ及びその製造方法 - Google Patents
シューズ及びその製造方法 Download PDFInfo
- Publication number
- WO2009122821A1 WO2009122821A1 PCT/JP2009/053208 JP2009053208W WO2009122821A1 WO 2009122821 A1 WO2009122821 A1 WO 2009122821A1 JP 2009053208 W JP2009053208 W JP 2009053208W WO 2009122821 A1 WO2009122821 A1 WO 2009122821A1
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- Prior art keywords
- shoe
- fabric
- foot
- stretchable fabric
- pulled
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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
- A43B23/02—Uppers; Boot legs
- A43B23/04—Uppers made of one piece; Uppers with inserted gussets
- A43B23/045—Uppers with inserted gussets
- A43B23/047—Uppers with inserted gussets the gusset being elastic
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B1/00—Footwear characterised by the material
- A43B1/02—Footwear characterised by the material made of fibres or fabrics made therefrom
- A43B1/04—Footwear characterised by the material made of fibres or fabrics made therefrom braided, knotted, knitted or crocheted
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B9/00—Footwear characterised by the assembling of the individual parts
- A43B9/12—Stuck or cemented footwear
Definitions
- the present invention relates to a shoe having a good fit with a foot and a manufacturing method thereof.
- Patent Document 1 discloses a shoe in which the fit with a foot is improved by adjusting the tightening of a shoelace and a connection / relaxation adjustment band.
- shoes that have improved fit with the feet during exercise have been designed in consideration of the deformation of the feet that is constantly changing during exercise.
- Patent Document 2 discloses an athletic shoe provided with an inner stretchable portion that covers a part of the inner side surface of a foot step portion that is disposed diagonally to each other and an outer stretchable portion that covers a portion of the outer side surface of the foot. Is disclosed.
- Patent Documents 1 and 2 have a problem that when the foot is bent during exercise, wrinkles are generated in the upper of the shoe, resulting in poor fit between the shoe and the foot.
- the present invention provides a shoe and a method for manufacturing the same, in which, when the foot is bent during exercise, the occurrence of wrinkles in the upper portion of the shoe is reduced to improve the fit between the shoe and the foot.
- the shoe of the present invention is a shoe using an elastic fabric for an upper (a shoe upper), and the elastic fabric is integrated with a sole (a shoe sole) in a stretched state.
- the method for manufacturing a shoe of the present invention is a method for manufacturing a shoe using a stretchable fabric as an upper, the step of producing an upper pattern based on a last having a size smaller than the size of the sole, and the upper pattern as a base of the sole. Expanding and fitting to the last that matches the size, producing an upper in a state where the stretchable fabric is pulled, and integrating the upper and the sole in a state where the stretchable fabric is pulled It is characterized by that.
- the elastic fabric is shrunk so that the upper follows the foot. Therefore, the occurrence of wrinkles on the upper is reduced, and the fit between the shoe and the foot is enhanced.
- the shoes of the present invention can preferably cope with a wide range of individual differences in foot sizes such as width and height.
- the shoes of the present invention preferably have excellent aesthetics because the legs look slim and the round shape of the heel appears beautifully.
- FIG. 4A is a partial view of the shoe of Example 1 of the present invention showing the stretch fabric piece used for the measurement of the tensile rate
- FIG. 4B shows the foot of the stretch fabric piece used for the measurement of the tensile rate of FIG. 4A.
- FIG. 6A is a side view of the outer side of the shoe showing the distribution of strain generated in the upper of the shoe during a running operation
- FIG. 6B is a side view of the inner side of the shoe of FIG. 6A
- FIG. 6C is the side view of FIG.
- It is a top view of the forefoot part of shoes.
- It is a perspective view of the foot
- FIG. 8A is a side view on the inner side of the foot in FIG. 7, and FIG. 8B is a side view on the outer side of the foot in FIG.
- FIG. 9 is a side view of a shoe of Example 6 of the present invention.
- FIG. 10 is a graph showing the tensile elongation of the double raschel warp knitted fabric of Production Example 2 measured according to JIS L 1018.
- the present inventors have distributed the strain in the shoe upper and the skin of the foot during the running operation.
- the results are shown in FIGS. 6 to 8, the degree 20 indicates the degree of distortion or shrinkage, and the degree of distortion or shrinkage is higher in the direction from I to II. 6 to 8, parts having the same function are denoted by the same reference numerals.
- FIG. 6A is a side view of the outer side of the shoe showing the distribution of strain generated in the upper of the shoe during a running operation
- FIG. 6B is a side view of the inner side of the shoe of FIG. 6A
- FIG. 6C is the side view of FIG. It is a top view of the forefoot part of shoes.
- FIG. 7 is a perspective view of the foot showing the distribution of shrinkage that occurs in the skin of the foot during the running operation.
- 8A is a side view on the inner side of the foot in FIG. 7
- FIG. 8B is a side view on the outer side of the foot in FIG.
- the upper portion of the shoe portion 13 may shrink in the range of 10 to 20% in the foot length direction compared to the case where the foot is not bent. I understand. Also, when the foot is floating in the air during running (when no load is applied), the upper part 13 of the shoe is 0 to 0 in the width direction of the foot compared to the state where the foot is on the ground (when loaded). It was found that it shrunk in the range of 8%.
- the present inventors have used the stretchable fabric for the upper, and at the same time, by integrating the upper in a state in which the stretchable fabric is pulled with the sole, that is, the upper of the shoe.
- the force to shrink By holding the force to shrink, it has been found that when the foot bends during exercise such as running, the occurrence of wrinkles in the upper of the shoe can be reduced and the fit between the shoe and the foot can be improved, and the present invention is It came to be completed.
- the shoe of the present invention is a shoe using an elastic fabric as an upper, and the elastic fabric is integrated with the sole in a stretched state.
- the “pulled state” can be said to be a state in which a force to shrink is held.
- the stretchable fabric is preferably pulled in the length direction of the shoe, more preferably in the width direction of the shoe.
- the stretchable fabric is pulled at a tensile rate of 10 to 40% in the length direction of the shoe, and preferably pulled at a tensile rate of 0 to 30% in the width direction of the shoe. More preferably, the stretchable fabric is pulled at a tensile rate of 10 to 20% in the length direction of the shoe and is pulled at a tensile rate of 0 to 8% in the width direction of the shoe.
- the stretch fabric is pulled at a tensile rate of 10 to 40% in the length direction of the shoe, and is pulled at a tensile rate of 0 to 30% in the width direction of the shoe.
- the balance of shrinking force becomes better. Therefore, when the foot is bent during exercise such as running, it is possible to reduce the occurrence of wrinkles in the upper of the shoe and enhance the fit between the shoe and the foot.
- the tensile rate of the stretchable fabric may be uniform or different at various portions of the shoe upper.
- tensile ratio indicates the degree of tension.
- the length in the foot length direction of the stretchable fabric in the stretched state is L1
- the length in the foot length direction of the stretchable fabric in the unstretched state When the thickness is L2, the general formula (1)
- Tensile rate (%) ⁇ (L1 ⁇ L2) / L1 ⁇ ⁇ 100 is obtained.
- the tensile rate in the width direction of the shoe is defined as W1 in the foot width direction of the stretchable fabric in the stretched state, and W2 in the foot width direction of the stretchable fabric in the unstretched state.
- the state which is not pulled means the state which cut
- the stretch fabric has a tensile elongation of 30 to 200% in the length direction of the foot per 5 cm width and a load of 20 N (2041 g) measured according to JIS L 1018, and the width direction of the foot. Is preferably 5 to 100%.
- the elastic fabric has a tensile elongation of 30 to 200% in the foot length direction and 5 to 100% in the foot width direction, more effectively, when the foot bends during exercise such as running, By reducing the occurrence of wrinkles in the shoe upper, the fit between the shoe and the foot can be enhanced.
- the stretchable fabric preferably extends better in the foot length direction than in the foot width direction.
- the measurement of the tensile elongation according to JIS L 1018 is specifically performed under the condition that the distance between the grips is 20 cm and the tensile speed is 20 cm / min.
- the stretch fabric is not particularly limited, and examples thereof include knitted fabrics such as warp knitted fabric, circular knitted fabric, and flat knitted fabric that have stretch properties themselves, and are lightweight, breathable, and durable.
- a double raschel warp knitted fabric is preferable from the viewpoint of superiority.
- the stretchable fabric includes stretchable artificial leather, synthetic leather, and synthetic rubber (polychloroprene rubber).
- the fiber used for the production of the stretchable fabric is not particularly limited.
- examples include fibers.
- polyester fibers and mixed fibers containing polyester fibers are preferable from the viewpoint of durability, and elastic polyurethane fibers and mixed fibers including elastic polyurethane fibers are preferable from the viewpoint of stretchability.
- the double raschel warp knitted fabric refers to a warp knitted fabric having a three-layer structure composed of base fabrics on the front and back surfaces and connecting yarns connecting the base fabrics.
- the double raschel warp knitted fabric is knitted as a separately controlled variable structure including a non-mesh structure part and a mesh structure part, with the base fabric on one side being jacquard controlled by a double needle warp knitting machine,
- the surface fabric is preferably knitted into a uniform non-mesh structure.
- the other surface may be the same organization or a different organization.
- the warp knitting machine used for manufacturing the double raschel warp knitted fabric is marketed by Meyer in Germany (including Japan Meyer, a Japanese corporation).
- the yarn constituting the back surface and the surface of the double raschel warp knitted fabric and the connecting yarn connecting the surface and the back surface are not particularly limited.
- polyurethane yarn, polyester yarn, nylon yarn, polypropylene yarn, acrylic yarn, elastic polyurethane yarn examples thereof include elastic polyester yarns and elastic polyamide yarns, polyester yarns are preferable from the viewpoint of durability, and polyethylene terephthalate yarns are particularly preferable.
- the yarn constituting the back surface of the double raschel warp knitted fabric may be a polyester yarn and an elastic polyurethane yarn alignment yarn, or a covering yarn in which an elastic polyurethane yarn is covered with a polyester yarn. preferable.
- the upper is only required to use the stretchable fabric, and one surface has a non-mesh structure, and the other surface preferably includes a mesh structure. From the viewpoint of aesthetics and breathability, the mesh structure is preferable. It is particularly preferable to use a surface including the surface. Further, the upper may use the elastic fabric as a whole, and the elastic fabric is used only for a part corresponding to the front foot portion of the foot, the tip portion of the front foot portion of the foot or the base portion of the toe of the foot. May be.
- the method for producing a shoe using the stretch fabric of the present invention for the upper is not particularly limited.
- the difference between the size of the last and the sole smaller than the sole is preferably 1 to 5 cm. If the difference between the last size of the sole and the size of the sole is less than 1 cm, the strain generated in the shoe upper cannot be sufficiently absorbed during movement such as running, effectively generating wrinkles in the shoe upper. There is a tendency that cannot be resolved. Further, if the difference between the last size smaller than the sole and the size of the sole exceeds 5 cm, it tends to be difficult to sew together with a reinforcing material or the like at the time of shoe manufacture.
- the manufacturing method of the upper is not particularly limited, and examples thereof include a normal bag sewing manufacturing method, a treasure manufacturing method, and a hanging manufacturing method. Also, the method for integrating the upper and the sole is not particularly limited, and examples thereof include integration by a normal cemented manufacturing method.
- the toe portion, the heel portion, and the eyelet portion of the shoe of the present invention using artificial leather.
- the shape of the shoe can be maintained and the holdability can be maintained.
- the heel portion does not have to be reinforced when a true weight reduction is required.
- FIG. 1 is a side view of a shoe of Example 1 of the present invention.
- FIG. 2 is a plan view of the shoe of Example 1 in which a notch is made substantially perpendicular to the foot length direction in the upper part of the shoe part corresponding to the base part of the toe.
- FIG. 3 is a plan view of the shoe of Comparative Example 1 in which a cut is made substantially perpendicular to the foot length direction in the upper portion of the shoe portion corresponding to the base portion of the toe.
- FIG. 1 is a side view of a shoe of Example 1 of the present invention.
- FIG. 2 is a plan view of the shoe of Example 1 in which a notch is made substantially perpendicular to the foot length direction in the upper part of the shoe part corresponding to the base part of the toe.
- FIG. 3 is a plan view of the shoe of Comparative Example 1 in which a cut is made substantially perpendicular to the foot length direction in the upper portion of the shoe portion corresponding to the base portion of the to
- FIG. 4A is a partial view of the shoe of Example 1 of the present invention showing the stretchable fabric piece used for measuring the tensile rate.
- FIG. 4B is a partial view of the shoe of Example 1 of the present invention when the stretch fabric piece used for measuring the tensile rate of the shoe of FIG. 4A is cut almost perpendicular to the foot length direction.
- FIG. 5 is an explanatory diagram showing an outline of the manufacturing process of the shoe of Example 1 of the present invention.
- FIG. 9 is a side view of a shoe of Example 6 of the present invention.
- FIG. 10 is a graph showing the tensile elongation of the double raschel warp knitted fabric of Production Example 2 measured according to JIS L 1018. 1 to 5, parts having the same function are denoted by the same reference numerals.
- Multifilament fiber yarn made of polyester (total fineness: 75 dtex, number of filaments: 36, mixing ratio: 10 mass%) and multifilament fiber yarn made of polyester (total fineness: 75 dtex, number of filaments: 36) This is a uniform yarn (yield: 62 g / m 2 ) with a mixing ratio of 10% by mass.
- a multifilament fiber yarn made of polyester (total fineness: 75 dtex, number of filaments: 36, mixing ratio: 27 mass%) and a monofilament fiber yarn made of elastic polyurethane (total fineness: 70 dtex, number of filaments) constituting the back surface : 1 piece, mixing ratio: 20% by mass), and an aligned yarn (yarn amount: 103 g / m 2 ) was used.
- the monofilament fiber yarn (Total fineness: 30 dtex, The number of filaments: 1 piece, Mixing ratio: 33 mass%, Yarn amount: 147 g / m ⁇ 2 >) which consists of polyester was used for the connecting yarn which connects the surface and a back surface.
- a double raschel warp knitted fabric was knitted using these yarns.
- the “mixing ratio” refers to mass% when all the yarns in the double raschel warp knitted fabric are 100 mass%.
- the double raschel warp knitted fabric has a non-mesh knitting structure on the back surface, and the front surface includes a mesh structure portion and a non-mesh structure portion.
- the thickness of the knitted double raschel warp knitted fabric was 3 mm.
- the gauge of the knitting machine used for knitting the double raschel warp knitted fabric was 22 gauge, and the basis weight of the entire knitted fabric was 312 g / m 2 . This double raschel warp knitted fabric was used as an elastic fabric.
- nylon yarn total fineness: 100 dtex, number of filaments: 24, mixing ratio: 26% by mass
- monofilament fiber yarn total fineness: 140 dtex, number of filaments: 1, mixed yarn
- a uniform yarn yield: 157 g / m 2 ) with a ratio of 13% by mass
- the monofilament fiber yarn total fineness: 30 dtex, the number of filaments: 1 piece, the mixing rate: 21 mass%, the amount of yarns: 84 g / m ⁇ 2 >
- polyester which connects the surface and a back surface.
- a double raschel warp knitted fabric of Production Example 2 was obtained in the same manner as Production Example 1 except that these yarns were used and the basis weight of the entire knitted fabric was 401 g / m 2 . Further, the tensile elongation of the double raschel warp knitted fabric of Production Example 2 at a load of 20 N per 5 cm width was determined according to JIS L 1018, and the result is shown in FIG. As can be seen from FIG. 10, the tensile elongation in the foot length direction was 89%, and the tensile elongation in the foot width direction was 28%.
- Example 1 A shoe of Example 1 was produced using the double raschel warp knitted fabric knitted in Production Example 1 as an elastic fabric.
- an upper pattern as shown in FIG. 5A was prepared and sewn based on the last of 24 cm.
- the upper pattern was expanded and fitted into a 27-cm last, and the upper 2 in a state where the stretchable fabric was pulled was produced.
- an adhesive was applied to the bottom surface of the upper 2 in a state where the stretchable fabric was pulled and the top surface of the 27 cm sole 3 shown in FIG. 5C.
- FIG. 5C An adhesive was applied to the bottom surface of the upper 2 in a state where the stretchable fabric was pulled and the top surface of the 27 cm sole 3 shown in FIG. 5C.
- Example 2 A shoe of Example 2 was produced in the same manner as Example 1 except that an upper pattern was produced based on a 22.5 cm last.
- Example 3 A shoe of Example 3 was produced in the same manner as Example 1 except that an upper pattern was produced based on a 25.5 cm last.
- Example 4 Using a stretchable fabric having a tensile elongation rate of 5% per 5 cm width and a load of 20 N measured in accordance with JIS L 1018 is 57% in the foot length direction and 7% in the foot width direction.
- a shoe of Example 4 was produced in the same manner as Example 1 except that an upper pattern was produced based on a last of 24 cm in the width direction and 27 cm in the width direction.
- Example 5 A stretchable fabric having a tensile elongation of 5% per 5 cm width and a load of 20 N measured in accordance with JIS L 1018 is 57% in the foot length direction and 57% in the foot width direction.
- a shoe of Example 5 was produced in the same manner as Example 1 except that an upper pattern was produced based on a last of 24 cm in the width direction and 22 cm in the width direction.
- Example 6 A shoe of Example 6 was produced using the double raschel warp knitted fabric knitted in Production Example 2 as an elastic fabric. A shoe of Example 6 was produced in the same manner as Example 1 except that the upper pattern was produced based on a last of 22 cm in the length direction and 27 cm in the width direction. In Example 6, a stretchable fabric was used only for the front end portion 14 of the forefoot portion of the shoe, and a non-stretchable fabric was used for the other portions.
- Comparative Example 1 Using the double raschel warp knitted fabric knitted in Production Example 1 as a stretchable fabric, a shoe of Comparative Example 1 having a size of 27 cm was produced. A shoe of Comparative Example 1 was produced in the same manner as in Example 1 except that an upper pattern was produced based on the 27 cm last.
- FIGS. 1 and the shoe of Comparative Example 1 when the upper part of the shoe part 13 corresponding to the base part 12 of the toe is cut almost perpendicularly to the foot length direction are shown in FIGS. It was shown to. 2 and 3, the upper portion of the shoe portion 13 of Comparative Example 1 with the incision is not open, whereas the upper portion of the shoe portion 13 of Example 1 with the incision is about 5 mm. You can see that there is an opening. Similarly, when incisions were made in the upper part of the part 13 of the shoes of Examples 2 to 5, there were openings of about 5.5 mm, 4.5 mm, 5 mm, and 5 mm, respectively. This indicates that in the shoes of Examples 1 to 5, the upper stretchable fabric is being pulled.
- the elastic fabric piece 4 having a length of 40 mm (L1) and a width of 20 mm (W1), that is, in a stretched state, from the upper end of the front foot portion 11 of the shoe of Example 1.
- the elastic fabric 4 was cut.
- they were 35 mm and 19 mm, respectively.
- tensile rate (%) ⁇ (L1 ⁇ L2) / L1 ⁇ ⁇ 100
- the length of the elastic fabric shoe at the tip of the front foot 11 of the shoe of Example 1 The tensile rate in the direction was 13%.
- tensile rate (%) ⁇ (W1 ⁇ W2) / W1 ⁇ ⁇ 100
- the tensile rate in the width direction was 5%.
- the stretchable fabric 5 in a stretched state having a length of 40 mm (L1) and a width of 20 mm (W1) is formed from the upper portion of the front foot portion 11 of the shoe of Example 1. Cut. Then, as a result of measuring the length and the width
- the stretchable fabric 6 in a stretched state having a length of 40 mm (L1) and a width of 20 mm (W1) is formed from the upper portion of the front foot portion 11 of the shoe of Example 1. Cut. Then, as a result of measuring the length and the width
- the tensile rate of the stretchable fabric in the uppers of the shoes of Examples 2 to 5 was measured.
- the tensile ratios in the length direction of the stretchable fabric of the elastic fabric at the tip of the forefoot portion 11 of the shoes of Examples 2 to 5 were 15%, 10%, 13%, and 13%, respectively.
- the tensile rates in the width direction were 8%, 3%, 0%, and 15%, respectively.
- the tensile rate in the length direction of the stretchable fabric on the outer side portion of the forefoot portion 11 of the shoes of Examples 2 to 5 is 15%, 10%, 13%, and 13%, respectively.
- Tensile ratios in the directions were 8%, 3%, 0%, and 15%, respectively.
- the tensile rate in the length direction of the stretchable fabric of the stretch fabric on the inner side of the forefoot portion 11 of the shoes of Examples 2 to 5 is 15%, 10%, 13%, and 13%, respectively.
- Tensile ratios in the directions were 8%, 3%, 0%, and 15%, respectively.
- the tensile rate of the stretchable fabric in the upper of the shoe of Example 6 was measured.
- the tensile rate in the length direction of the shoe of the stretchable fabric of the front end portion 14 of the forefoot portion of Example 6 was 16.7%
- the tensile rate in the width direction of the shoe was 0%.
- the non-stretchable fabric is used for the portion excluding the tip portion 14 of the forefoot portion of the shoe, only the fabric of the tip portion of the forefoot portion of the shoe is pulled.
- the shoes of Examples 1 to 6 were able to cope with a wide range of individual differences in foot sizes such as wide and instep height, and further suppressed the upper doubledness, making the feet look slim and excellent in aesthetics.
- the present invention can be used for various athletic shoes such as running shoes, walking shoes, competition shoes, such as volleyball shoes and basketball shoes. It can also be used as leisure shoes.
Abstract
Description
表面を構成する糸としてポリエステルからなるマルチフィラメント繊維糸(トータル繊度:75dtex、フィラメント数:36本、混合割合:10質量%)とポリエステルからなるマルチフィラメント繊維糸(トータル繊度:75dtex、フィラメント数:36本、混合割合:10質量%)との引き揃え糸(糸量:62g/m2)を使用した。また、裏面を構成する糸としてポリエステルからなるマルチフィラメント繊維糸(トータル繊度:75dtex、フィラメント数:36本、混合割合:27質量%)と弾性ポリウレタンからなるモノフィラメント繊維糸(トータル繊度:70dtex、フィラメント数:1本、混合割合:20質量%)との引き揃え糸(糸量:103g/m2)を使用した。また、表面と裏面をつなぐ連結糸は、ポリエステルからなるモノフィラメント繊維糸(トータル繊度:30dtex、フィラメント数:1本、混合割合:33質量%、糸量:147g/m2)を使用した。これらの糸を使用し、ダブルラッセル経編地を編成した。前記「混合割合」は、前記ダブルラッセル経編地における全ての糸を100質量%とした場合の質量%をいう。前記ダブルラッセル経編地は、裏面は非メッシュの交編構造であり、表面はメッシュ構造部分と非メッシュ構造部分を含むようにした。編成したダブルラッセル経編地の厚さは3mmであった。なお、前記ダブルラッセル経編地の編成に用いた編み機のゲージは22ゲージ、編地全体の目付けは312g/m2であった。このダブルラッセル経編地を伸縮性生地として用いた。また、JIS L 1018の規定により、5cm幅当たり、荷重20Nの時の、前記ダブルラッセル経編地の引張伸び率を調べたところ、足の長さ方向の引張伸び率は57%であり、足の幅方向の引張伸び率は33%であった。
表面を構成する糸としてポリエステルからなるマルチフィラメント繊維糸(トータル繊度:150dtex、フィラメント数:48本、混合割合:37質量%)とナイロン糸(トータル繊度:200dtex、フィラメント数:24本、混合割合:3質量%)との引き揃え糸(糸量:160g/m2)を使用した。また、裏面を構成する糸としてナイロン糸(トータル繊度:100dtex、フィラメント数:24本、混合割合:26質量%)と弾性ポリウレタンからなるモノフィラメント繊維糸(トータル繊度:140dtex、フィラメント数:1本、混合割合:13質量%)との引き揃え糸(糸量:157g/m2)を使用した。また、表面と裏面をつなぐ連結糸は、ポリエステルからなるモノフィラメント繊維糸(トータル繊度:30dtex、フィラメント数:1本、混合割合:21質量%、糸量:84g/m2)を使用した。これらの糸を使用し、編地全体の目付けを401g/m2にした以外は、製造例1と同様にして、製造例2のダブルラッセル経編地を得た。また、JIS L 1018の規定により、5cm幅当たり、荷重20Nの時の、製造例2のダブルラッセル経編地の引張伸び率を調べ、その結果を図10に示した。図10から分かるように、足の長さ方向の引張伸び率は89%であり、足の幅方向の引張伸び率は28%であった。
製造例1で編成したダブルラッセル経編地を伸縮性生地として用いて実施例1のシューズを作製した。先ず、製造例1のダブルラッセル経編地を用い、24cmのラストをベースとして図5Aに示すようなアッパーパターンを作製し、縫製した。その後、前記アッパーパターンを、図5Bに示すように、27cmのラストに拡張して嵌め込み、前記伸縮性生地が引っ張られた状態のアッパー2を作製した。続いて前記伸縮性生地が引っ張られた状態のアッパー2の底面及び図5Cに示している27cmのソール3の上面に接着剤を塗布した。その後、図5Dに示すように、接着剤が塗布された前記アッパー2の底面と前記ソール3の上面を合わせて圧着により一体化し、図1に示すシューズと同様のシューズを作製した。なお、アッパーパターンを作製する際、通常のシューズのアッパーの作製と同様、シューズのデザインに従い、爪先部、踵部、及びハトメ部などの補強部を設けた。
22.5cmのラストをベースとしてアッパーパターンを作製した以外は、実施例1と同様にして実施例2のシューズを作製した。
25.5cmのラストをベースとしてアッパーパターンを作製した以外は、実施例1と同様にして実施例3のシューズを作製した。
JIS L 1018の規定により測定した、5cm幅当たり、荷重20Nの時の引張伸び率が、足の長さ方向において57%であり、足の幅方向において7%である伸縮性生地を用い、長さ方向は24cm、幅方向は27cmのラストをベースとしてアッパーパターンを作製した以外は、実施例1と同様にして実施例4のシューズを作製した。
JIS L 1018の規定により測定した、5cm幅当たり、荷重20Nの時の引張伸び率が、足の長さ方向において57%であり、足の幅方向において57%である伸縮性生地を用い、長さ方向は24cm、幅方向は22cmのラストをベースとしてアッパーパターンを作製した以外は、実施例1と同様にして実施例5のシューズを作製した。
製造例2で編成したダブルラッセル経編地を伸縮性生地として用いて実施例6のシューズを作製した。長さ方向は22cm、幅方向は27cmのラストをベースとしてアッパーパターンを作製した以外は、実施例1と同様にして実施例6のシューズを作製した。なお、実施例6においては、シューズの前足部の先端部14のみに伸縮性生地を用いており、他の部分は非伸縮性生地を用いた。
製造例1で編成したダブルラッセル経編地を伸縮性生地として用い、サイズが27cmの比較例1のシューズを作製した。27cmのラストをベースとしてアッパーパターンを作製した以外は、実施例1と同様にして、比較例1のシューズを作製した。
図4Aに示しているように、実施例1のシューズの前足部11の先端部のアッパーから、長さ40mm(L1)、幅20mm(W1)の伸縮性生地片4、即ち引っ張られた状態の伸縮性生地4をカットした。その後、図4Bに示している、カットした後の引っ張られていない状態の伸縮性生地片7の長さ(L2)及び幅(W2)を測定した結果、それぞれ35mm、19mmであった。上記の一般式(1)引張率(%)={(L1-L2)/L1}×100により求めた結果、実施例1のシューズの前足部11の先端部の伸縮性生地のシューズの長さ方向における引張率は13%であった。同じく、上記の一般式(2)引張率(%)={(W1-W2)/W1}×100により求めた結果、実施例1のシューズの前足部11の先端部の伸縮性生地のシューズの幅方向における引張率は5%であった。
実施例1及び比較例1のシューズを着用した被験者を時速10kmで約1分間ランニングさせ、その際のシューズのアッパーの皺の程度、及び足とのフィット感などを下記の基準で評価し、その結果を下記表1に示した。被験者は、それぞれ10名とした。
前記ランニング時のシューズのアッパーを高速度カメラで撮影し、シューズのアッパーに発生する皺の程度を観察し、評価した。
A 皺の発生が小さい
B 皺の発生が大きい
足全体のフィット感及び足の各部位のフィット感を比較例1のシューズを基準に一対比較法により5段階で評価した。
5 良い
4 やや良い
3 同等
2 やや悪い
1 悪い
2 アッパー
3 ソール
4、5、6、7、8、9 引張率の測定に用いた伸縮性生地片
11 シューズの前足部
12 足の指の付け根部位
13 足の指の付け根部位に対応するシューズの部位
14 シューズの前足部の先端部
20 歪み又は縮みの程度を示す度合
Claims (12)
- 伸縮性生地をアッパーに用いたシューズであって、
前記伸縮性生地は引っ張られた状態でソールと一体化されていることを特徴とするシューズ。 - 前記伸縮性生地は、シューズの長さ方向に引っ張られている請求項1に記載のシューズ。
- 前記伸縮性生地は、シューズの幅方向にも引っ張られている請求項2に記載のシューズ。
- 前記伸縮性生地は、シューズの長さ方向において10~40%の引張率で引っ張られている請求項1~3のいずれか1項に記載のシューズ。
- 前記伸縮性生地は、シューズの幅方向において0~30%の引張率で引っ張られている請求項1~4のいずれか1項に記載のシューズ。
- 前記伸縮性生地は、シューズの長さ方向において10~20%の引張率で引っ張られ、かつシューズの幅方向において0~8%の引張率で引っ張られている請求項1~5のいずれか1項に記載のシューズ。
- 前記伸縮性生地は、シューズの長さ方向における引張率/シューズの幅方向における引張率=1.25以上である引張率で引っ張られている請求項1~6のいずれか1項に記載のシューズ。
- 前記伸縮性生地は、JIS L 1018の規定により測定した5cm幅当たり、荷重20Nの時の引張伸び率が、足の長さ方向において30~200%であり、足の幅方向において5~100%である請求項1~7のいずれか1項に記載のシューズ。
- 前記伸縮性生地は、ダブルラッセル経編地である請求項1~8のいずれか1項に記載のシューズ。
- 前記ダブルラッセル経編地の裏面を構成する糸は、ポリエステル糸と弾性ポリウレタン糸の引き揃え糸である請求項9に記載のシューズ。
- 前記伸縮性生地は、足の前足部、足の前足部の先端部又は足の指の付け根部位に対応する前記アッパーの一部のみに用いられている請求項1~10のいずれか1項に記載のシューズ。
- 伸縮性生地をアッパーに用いたシューズの製造方法であって、
ソールのサイズより小さいサイズのラストをベースとしてアッパーパターンを作製する工程と、
前記アッパーパターンをソールのサイズに合致するラストに拡張して嵌め込み、前記伸縮性生地が引っ張られた状態のアッパーを作製する工程と、
前記伸縮性生地が引っ張られた状態のアッパーとソールとを一体化する工程とを含むことを特徴とするシューズの製造方法。
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US8296972B2 (en) | 2012-10-30 |
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