JP3197487B2 - shoes - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lightweight shoe having excellent breathability and cushioning property, having water repellency on a surface layer and water absorbency on a back layer. It can be preferably used for sports shoes accompanied by intense sweating.

[0002]

2. Description of the Related Art Feet wearing shoes become stuffy or sticky, and are even more intense during exercise. In order to eliminate this discomfort, a knitted fabric having a multilayer structure using synthetic fibers is used as an upper material of shoes as a lightweight material having breathability and cushioning properties. For example, in Japanese Utility Model Laid-Open No. 63-25004, a synthetic fiber, a spun yarn, a natural fiber, and the like are used for the front and back knitted fabrics, and the upper material is knitted with a knitted fabric having a three-dimensional structure in which a yarn intervenes in a space therebetween. A shoe is disclosed. In addition, 3-320
No. 3 discloses a shoe using a multilayered knit using a water-absorbent product such as nylon on the front and back knitted fabrics and a strong yarn such as nylon as the front and back splice yarns for the upper material. Further, Japanese Utility Model Publication No. 1-16782 discloses a multilayer knitted fabric for clothing in which a water-repellent treatment is applied to a skin-side surface layer and a water-absorbing treatment is applied to the other surface layer, and an intermediate layer is formed of hydrophilic fibers. I have.

[0003]

However, in the above-mentioned multilayer knitted fabric for shoes and clothing, although the water absorbing property and the contact feeling at the time of sweating are considerably improved, the wearing feeling at the time of rainy weather or heavy exercise is not necessarily achieved. It was not satisfactory.
This is because the knitted fabric on the front and back and the middle layer are made of moisture-absorbing fibers such as spun yarn and natural fibers, so that the fluff impairs air permeability and the moisture accumulates on the knitted fabric, making it sticky during severe sweating. It is considered that the feeling and cushioning property are reduced, and the wearing feeling is deteriorated. An object of the present invention is to provide a lightweight shoe that prevents invasion of water from the outside, absorbs and diffuses moisture inside the shoe, and maintains appropriate cushioning properties.

[0004]

Means for Solving the Problems The present inventors have made intensive studies to solve the above-mentioned problems, and as a result, have reached the present invention. That is, the present invention relates to a shoe in which a multilayer knitted fabric comprising an outer surface layer and an intermediate layer on the front and back sides is used as an upper material, and the air permeability of the upper material is 100 cc / sec · c.
m ² or more, compression ratio 20% or more, bulk specific gravity 0.3 g /
cm ³ or less, and the surface layer of the knitted fabric has a water-repellent treatment,
The back layer is provided with shoes that have been subjected to water absorption processing.

Further, the present invention relates to a shoe using a multilayer knitted fabric composed of an outer surface layer on the front and back and an intermediate layer as an upper material, wherein the outer surface layer is mainly composed of a single fiber fineness of 1 to 5 denier. , Formed of a synthetic fiber multifilament having a total fineness of 30 to 150 deniers, and the intermediate layer is mainly composed of a single fiber fineness of 15
-30 denier synthetic fiber monofilament, the monofilament fineness of the monofilament of the intermediate layer is 3 to 30 times the single fiber fineness of the multifilament of the outer surface layer, the surface layer is water-repellent, and the back layer is Offers shoes that have been treated to absorb water.

The shoes of the present invention can be expected to further improve water repellency and water absorption by forming the water-repellent surface layer into a flat structure and the water-absorbing back layer into an uneven structure. Conversely, when the surface layer is formed in a concavo-convex structure and the back layer is formed in a flat structure, the air permeability, cushioning property, lightness, and the like can be appealed from a visual point of view. It is hygienic and preferable if antibacterial processing is given to the upper material.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION In the shoe of the present invention, which is stable in breathability, cushioning and lightness for a long period of time, the characteristics or material of the upper material are important. It can be manufactured by employing a multi-layer knitted fabric composed of layers and intermediate layers.

[0008] The characteristics of the upper material that can achieve the object of the present invention are that the air permeability is 100 cc / sec · cm ² or more, and more preferably 150 cc / sec · cm ² or more. If it is less than 100 cc / sec · cm ² , moisture release and heat radiation from the inside of the shoe to the outside become insufficient, and the inside of the shoe tends to be stuffy and uncomfortable. Further, from the viewpoints of waterproofness and safety, the ventilation rate is preferably 400 cc / sec · cm ² or less. The compression ratio of the upper material is 20% or more, more preferably 30% or more. If it is less than 20%, the knitted fabric becomes hard, and the bending resistance and the compression resistance are large, which causes a decrease in motor functionality and makes it difficult to absorb impact.
On the other hand, from the viewpoint of maintaining the form stability of the shoe, the compression ratio is preferably set to 80% or less. The bulk specific gravity of the upper material is 0.3 g / cm ³ or less, and more preferably 0.2 g / cm ³ or less. If it exceeds 0.3 g / cm ³ , the shoes become heavier and the exercise function tends to decrease. On the other hand, in order to stabilize the form of the shoes, the bulk specific gravity is preferably 0.05 g / cm ³ or more. In the present invention, the ventilation rate is JIS L 1096 (Fragile method).
, The compression ratio is a value obtained by measuring five times according to JIS L 1096 and averaging the measured values. The bulk specific gravity is a value obtained by measuring bulkiness according to JIS L 1018 and calculating the reciprocal of the measured value.

The upper material is provided with a water-repellent treatment on the surface layer and a water-absorbing treatment on the back surface layer, thereby preventing rainwater or the like from entering from the outside and improving the sticky feeling of the feet.
The water repellency is measured according to JIS L 1092 (spray method).
The score is 0 or more, and more preferably, no strike-through occurs at 80 or more after 5 washes. Water absorption is JIS L
It is measured by 1096 (drip method), preferably 10 seconds or less on the original cloth, 30 seconds or less after 5 washings, more preferably 5 seconds or less on the original cloth, and 10 seconds or less after 5 washings. The water-repellent processing is performed by a processing method that can selectively apply a general water-repellent resin such as a fluororesin, a silicon-based resin, or a wax-based resin to one surface, such as a printing method or a spraying method. The water-absorbing process uses a water-absorbing agent such as polyethylene glycol or a derivative thereof, and is applied to the back surface layer by dipping the knitted fabric in a working liquid after the water-repellent process or by the method used for the water-repellent process. The type and concentration of the processing agent used for the water-repellent processing and the water-absorbing processing can be determined by the water-repellent / water-absorbing performance required for the shoes. Further, if necessary, different performances such as antifouling property and antistatic property may be imparted to both outer surface layers.

The upper material for achieving the object of the present invention uses a synthetic fiber filament having relatively low hygroscopicity, such as polyester or polyamide, for the outer surface layer and the intermediate layer of the multilayer structure knitted fabric. The filament material has sufficient air permeability without causing the fabric to have excessive water retention, and it is easy to select a fineness and provide an appropriate cushioning property. Natural fibers such as cotton, hemp, and wool, and cellulosic fibers accumulate moisture, and spun yarns are not preferable because they have a basis weight and tend to fluff.

The outer layer of the knitted fabric used for the upper material is formed by using multifilaments having a single fiber fineness of 1 to 5 denier and a total fineness of 30 to 150 denier to make the surface soft and easy to process. When the single fiber fineness of the multifilament is less than 1 denier, single yarn breakage is liable to occur, and water repellency and water absorption are likely to decrease. On the other hand, if it exceeds 5 denier, the texture becomes coarse and hard,
Foot contact is reduced, and discomfort is easily caused. If the total fineness is less than 30 denier, the cover factor tends to decrease, and the strength of the upper material, and thus the effect of the water-repellent or water-absorbing treatment, tends to decrease. On the other hand, if the total fineness exceeds 150 denier, the basis weight increases, and the breathability and lightness of the shoe decrease.

The intermediate layer is formed of a monofilament having a single fiber fineness of 15 to 30 denier, preferably 20 to 25 denier. If the monofilament fineness of the monofilament is less than 15 denier, the cushioning property of the upper material becomes poor. On the other hand, if it exceeds 30 denier, the flexibility of the upper material may be impaired. Furthermore, when the monofilament fineness of the monofilament of the intermediate layer is in the range of 3 to 30 times, preferably 5 to 15 times, the monofilament fineness of the multifilament of at least one outer layer, the upper material It can have moderate cushioning and flexibility.

Further, the upper material used in the shoe of the present invention has a flat surface structure of the surface layer to be subjected to the water repellent treatment.
It is preferable to form the surface of the back surface layer to be subjected to the water absorbing process into an uneven structure. On the surface of the flat structure, the water repellent does not penetrate too much into the intermediate layer, and on the surface of the uneven structure, the contact area between the shoes and the skin is reduced, so that a good touch can be obtained with a dry feel . Conversely, by forming the surface of the surface layer into an uneven structure and the surface of the back layer into a flat structure, the water repellency and water absorption are maintained, while the appearance of the uneven structure of the surface layer shows breathability, cushioning, and lightness. A feeling can be appealed from the visual aspect. The surface of the flat structure can be formed by, for example, flat knitting, and the surface of the uneven structure can be formed by, for example, mesh knitting, needle-free structure, or tack knitting. FIG. 1 is a schematic cross-sectional view of an upper material in which a surface layer has a flat structure and a back layer has an uneven structure.

It is preferable from the viewpoint of shoe hygiene that the antibacterial property is imparted to a part or the whole of the upper material so as to impart antibacterial properties. The antibacterial processing may be performed by a general processing method. The antibacterial property is measured by a bacteria count method (SEK standard), and the difference between the increase and decrease is preferably 1.6 or more.

The multilayer structure knitted fabric used for the upper material of the present invention can be knitted using, for example, a double Russell knitting machine, a double tricot knitting machine, a circular knitting machine or the like. After knitting, post-processing such as relaxation, scouring, water-repellent processing, and water-absorbing processing can be performed to obtain the shoe upper material according to the present invention.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The shoes of the present invention will be described below in more detail with reference to specific examples. Example 1 First, using a double Russell 22G knitting machine, according to the organization diagram shown in FIG. Knitted at 48 courses / inch. Polyester multifilaments having a total fineness of 75 denier and 36 filaments were used for both outer layers, and polyester monofilaments having a denier of 20 denier were used for the intermediate layer. After relaxing and scouring the obtained greige fabric by a conventional method, using a 2% owf solution of Asahi Guard AG710 (manufactured by Asahi Glass Co., Ltd.), curing is performed at 170 ° C. for 1 minute, and the flat surface is water-repellent. Processed. After that, using a 5% owf solution of SR1000 (manufactured by Takamatsu Oil & Fat Co., Ltd.), the drying set was 1
The treatment was performed at 80 ° C. for 40 seconds, and the uneven surface was subjected to a water absorbing process to obtain an upper material. Various physical properties of the obtained upper material were measured, and the results are shown in Table 1. The shoe of the present invention was manufactured using the obtained upper material. This shoe was a breathable, cushion-free, lightweight, and non-greasy, comfortable shoe.

Example 2 A three-layer knitted fabric obtained in the same manner as in Example 1
1 copy of NTON 20 (manufactured by Teikoku Chemical Industry Co., Ltd.) and 1 copy of Sumitex Resin M-3 (manufactured by Sumitomo Chemical Co., Ltd.).
025 parts, 0.0025 parts of Sumitex Accelerator ACX (manufactured by Sumitomo Chemical Co., Ltd.), and 100 parts of water were added to the antibacterial processing liquid, and the resultant was immersed in an antibacterial processing solution. Was squeezed to 100%, dried and treated at 180 ° C. for 1 minute under curing conditions to obtain an antibacterial upper material. Table 1 shows the results of measuring various physical properties of the obtained upper material. The shoe of the present invention was manufactured using the obtained upper material.
The shoes produced were comfortable and hygienic.

Example 3 The same procedure as in Example 1 was repeated except that a polyester multifilament having a total fineness of 75 denier and 48 filaments was used for the outer layer and a monofilament having a denier of 30 denier was used for the intermediate layer. Knitting was performed in courses / inch. After treating in a conventional manner in the same manner as in Example 1, water repellency treatment and water absorption treatment were performed to obtain an upper material. Table 1 shows various physical properties of the obtained upper material. Shoes were manufactured using the obtained upper material. These shoes were excellent in fashionability, had a soft feel, and had good foot contact.

Example 4 The same procedure as in Example 1 was carried out except that the outer layer was made of a polyester multifilament having a total fineness of 50 denier and 18 filaments, and a monofilament having a denier of 20 was used as the intermediate layer. Knitting was performed in courses / inch. After treating in a conventional manner in the same manner as in Example 1, water repellency treatment and water absorption treatment were performed to obtain an upper material. Table 1 shows various physical properties of the obtained upper material. Shoes were manufactured using the obtained upper material. This shoe was a comfortable shoe with a smooth feel with less discomfort.

Comparative Example 1 A three-layer knitted fabric was knitted in the same manner as in Example 1 using a multifilament having a total fineness of 75 denier and 72 filaments for the outer layer and a monofilament having a denier of 40 denier for the intermediate layer.
The obtained greige was relaxed, scoured and dyed by a conventional method to obtain an upper material. Table 1 shows various physical properties of the obtained upper material. Shoes were manufactured using the obtained upper material. The manufactured shoes had a sticky feeling and poor cushioning properties. In addition, water repellency and water absorption were insufficient.

Comparative Example 2 Knitting of a three-layer knitted fabric was carried out in the same manner as in Example 1 except that a multifilament having a total fineness of 30 denier and 12 filaments was used for the intermediate layer. The obtained greige was relaxed, scoured, and dyed by a conventional method to obtain an upper material. Table 1 shows the physical properties of the obtained upper material. Shoes were manufactured using the obtained upper material. This shoe had poor air permeability, was heavy when worn, and had a feeling of discomfort.

[0022]

[Table 1]

[0023]

According to the shoe of the present invention, the outer layer and the intermediate layer are each formed optimally by using a multilayer structure knitted fabric for the upper material, so that high breathability can be obtained even under high humidity or during exercise. And moderate cushioning properties, and is lightweight. In addition, the surface layer has high water repellency on the surface and the back layer has high water absorption, so it has a light touch and a moderate fit even when it is raining or exercising, so it can be worn lightly . Suitable for sports shoes with severe sweating.

[Brief description of the drawings]

FIG. 1 is a schematic view of an upper material having a flat surface layer and an uneven surface layer.

FIG. 2 shows a case in which the surface layer is a flat knit and the back layer is a mesh knitted fabric.
The organization chart of the layered upper material.

[Explanation of symbols]

11; flat layer surface layer 12; intermediate layer 1
3: Back surface layer L1 and L2 of uneven structure; yarns L3 and L4 constituting mesh-shaped knitted fabric; connecting yarns L5 and L6; yarns constituting flat knitting

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takeshi Ohre 1-12-3, Minamikohoku, Suminoe-ku, Osaka-shi, Osaka Inside Mizuno Corporation (72) Inventor Toshiaki Kida 1-chome, Minamikohoku, Suminoe-ku, Osaka-shi, Osaka No. 12, No. 35 Inside Mizuno Co., Ltd. (56) References JP-A-6-209804 (JP, A) Japanese Utility Model Showa 63-57909 (JP, U) Japanese Utility Model Showa 63-2504 (JP, U) Japanese Utility Model Showa 62 -40905 (JP, U) Japanese Utility Model Showa 60-137806 (JP, U) Japanese Utility Model Showa 54-95341 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A43B 23/02 101 A43B 1/00 A43B 5/00

Claims (5)

(57) [Claims] 1. A shoe using a multilayer knitted fabric comprising an outer surface layer and an intermediate layer on the front and back sides as an upper material, wherein the upper material has a ventilation rate of 100 cc / sec.cm ² or more and a compression ratio of 20. % Or more, the bulk specific gravity is 0.3 g / cm ³
The shoe according to the present invention, wherein the surface layer of the knitted fabric is subjected to a water-repellent treatment, and the back surface layer is subjected to a water-absorbing treatment. 2. A shoe using, as an upper material, a knitted fabric having a multilayer structure composed of an outer surface layer and an intermediate layer on the front and back sides, wherein the outer surface layer of the knitted fabric mainly has a single fiber fineness of 1 to 5 denier. , Formed of synthetic fiber multifilaments having a total fineness of 30 to 150 denier, and the intermediate layer is mainly composed of a single fiber fineness of 15 to 150 denier.
It is formed of 30 denier synthetic fiber monofilament. The monofilament fineness of the monofilament of the intermediate layer is 3 to 30 times that of the multifilament of the outer surface layer. A shoe characterized by being subjected to water absorption processing. 3. The shoe according to claim 1, wherein the surface layer of the multilayer structure knitted fabric has a flat structure, and the back surface layer has an uneven structure. 4. The surface layer of the multilayer knitted fabric has an uneven structure,
3. The shoe according to claim 1, wherein the back layer is formed in a flat structure. 5. The shoe according to claim 1, wherein an antibacterial treatment is applied to the upper material.