Mesh fabric for shoe upper and shoe upper manufactured using mesh fabric

Abstract

The present invention relates to a mesh fabric for a shoe upper and a shoe upper manufactured using the mesh fabric. The purpose of the present invention is to provide a mesh fabric for a shoe upper and a shoe upper manufactured using the mesh fabric, in which elastic yarn, reinforcing yarn, and heat-fusible bonding yarn are used to weave a mesh fabric, so that the mesh fabric and a sub-pattern or logo are thermally fused by the the heat-fusible bonding yarn and the reinforcing yarn, enabling easy and secure attachment, and the strength of the upper is maintained by the reinforcing yarn constituting the mesh fabric, thus preventing the problem of shape instability caused by exposure of an adhesive and weakening of the strength of the upper during use.

Description

Mesh fabric for a shoe upper and a shoe upper made of said mesh fabric

[0001] The present invention relates to a mesh fabric for a shoe upper and a shoe upper made of said mesh fabric, and more specifically, to a mesh fabric for a shoe upper and a shoe upper made of said mesh fabric that allows for easy attachment of a logo and sub-pattern while using the mesh fabric and maintains strength so that problems such as exposure of the adhesive and weakening of strength do not occur during use.

[0002] Generally, athletic shoes consist of two main elements: the upper and the sole structure.

[0003] As described above, the sole structure is fixed to the lower surface of the upper and is generally positioned between the foot and the ground to protect the foot from foreign substances and dampen the impact during walking.

[0004] And the upper is usually called the upper and refers to the upper part of the shoe, and it serves to maintain the external design and shape of the shoe and protect the instep and joints.

[0005] This upper forms a cavity inside the shoe to accommodate the foot, said cavity has an alternative shape of the foot, and since entry into the cavity is provided by an ankle opening, the upper extends over the instep and toe area of ​​the foot, the inner and outer sides of the foot, and around the heel area of ​​the foot.

[0006] The uppers of such shoes are often made of mesh, leather, synthetic leather, etc., and the basic requirements that the upper must provide include support, protection, breathability, and lightness.

[0007] In particular, breathability and lightness play a very important role in shoe uppers, and with the recent increase in the trekking and running population, there is a growing demand for lightweight and breathable shoes, leading to an increased demand for shoes with uppers made of mesh fabric.

[0008] In other words, the upper, which ensures lightness and breathability by using mesh fabric as described above, helps to reduce the effects of heat and sweat (perspiraton) that typically accumulate around the foot during sports activities.

[0009] However, the upper made of the above mesh fabric has the problem of not providing good support and foot protection.

[0010] In other words, since mesh fabric is typically formed in an open net shape using polyester monofilament yarn, it does not possess sufficient strength. Consequently, when the shoe is used for a long time, the weave of the mesh fabric loosens, and the position of the woven parts of the net structure changes, causing the shoe to become loose or fail to maintain its original upper shape.

[0011] Accordingly, in order for the shoe to maintain a constant shape during use, a sub-pattern composed of a film or the like, rather than mesh fabric, is attached to the upper made of conventional mesh fabric. The sub-pattern may have a pattern or manufacturer's logo printed on it to provide aesthetic appeal, or the sub-pattern may be manufactured in the form of a logo.

[0012] In addition, even in the case of shoes without the aforementioned sub-pattern, a logo is attached to the upper to provide aesthetic appeal, distinctiveness, and strength.

[0013] To attach these sub-patterns or logos to mesh fabric, sewing or adhesive is typically used.

[0014] However, in the case of sewing, there was a problem where the sewing thread was not firmly bonded between the mesh fabric and the logo or sub-pattern due to the large number of air pockets in the mesh fabric.

[0015] In addition, when using adhesive, a film-type hot melt adhesive is typically applied between the upper body and the sub-pattern or logo to bond them, but there was a problem where they easily separated due to the weakening of the adhesive's bonding strength during use, and over time, the adhesive spread into the loose mesh fabric, causing defects.

[0016] In particular, when using adhesive, there was a problem where the logo and the upper material were different, so they did not adhere well.

[0017] [Prior Art Literature]

[0018] [Patent Literature]

[0019] Registered Patent 10-1367445

[0020] The objective of the present invention to solve the above-mentioned problems is to provide a mesh fabric for a shoe upper and a shoe upper manufactured from said mesh fabric, wherein the mesh fabric is woven using elastic yarn, strength reinforcing yarn, and melt bonding yarn, so that the mesh fabric and the sub-pattern or logo are attached by heat fusion through the melt bonding yarn and strength reinforcing yarn, making attachment easy and sturdy, and the strength of the upper is maintained by the strength reinforcing yarn constituting the mesh fabric, thereby preventing problems of shape instability caused by exposure of the adhesive and weakening of the strength of the upper during use.

[0021] In another embodiment of the present invention, instead of spinning the strength-reinforcing yarn and the melt-bonding yarn, the strength-reinforcing raw material and the melt-bonding raw material are formed into a single yarn to ensure both strength and adhesive strength.

[0022] Furthermore, it is evident that the technical challenges are not limited to those described above, and that other technical challenges may be derived from the following description.

[0023] The feature of the present invention for achieving the above-mentioned purpose is a mesh fabric for shoe uppers woven by mixing elastic yarns, strength-reinforcing yarns, and melt-bonding yarns in the warp and weft.

[0024] The above mesh fabric uses elastic yarns as warp threads and arranges elastic yarns, strength-reinforcing yarns, and melt-bonding yarns as weft threads.

[0025] In addition, another feature of the present invention is a mesh fabric for shoe uppers woven by mixing elastic yarn, strength reinforcing material, and melt adhesive material into warp and weft yarns.

[0026] The above mesh fabric uses elastic yarns as the warp and arranges elastic yarns and mixed yarns as the weft.

[0027] Meanwhile, the mesh fabric mentioned above is woven in a Leno weave.

[0028] The above elastic yarn is selected from TPEE yarn, spandex yarn, polyurethane yarn, nylon yarn, and polyester yarn.

[0029] The strength reinforcing raw material of the above strength reinforcing yarn or blended yarn is selected from PVDF, high-strength polyester, polyamide, carbon, and polyvinyl chloride (PVC).

[0030] The raw material for melt bonding of the above melt bonding yarn or blended yarn is selected from EVA, polyurethane, polyester, nylon, and high-strength polypropylene.

[0031] Another feature of the present invention is a shoe upper composed of a mesh fabric woven using a mixture of elastic yarn, strength reinforcing yarn, and melt bonding yarn in the warp and weft, and formed into a predetermined shape as a one-piece by heat-fusion through tenter processing.

[0032] Another feature of the present invention is a shoe upper composed of a mesh fabric woven using a mixture of elastic yarn, strength reinforcing material, and melt adhesive material mixed and spun in the warp and weft, and heat-fused through tenter processing to form a one-piece shape.

[0033] According to the present invention configured as described above, by weaving a mesh fabric using elastic yarn, strength reinforcing yarn, and melt bonding yarn, the mesh fabric and the sub-pattern or logo are attached by heat fusion through the melt bonding yarn and the strength reinforcing yarn, making attachment easy and sturdy. Furthermore, the strength of the upper is maintained by the strength reinforcing yarn constituting the mesh fabric, thereby preventing problems of shape instability caused by exposure of the adhesive and weakening of the upper's strength during use, thus providing a shoe that is lightweight, has excellent breathability, and has improved productivity.

[0034] Furthermore, since the effects of the present invention described above are naturally manifested by the composition of the described content regardless of whether the inventor is aware of them, the effects described above are merely a few effects based on the described content and should not be recognized as having described all effects understood or actually existing by the inventor.

[0035] In addition, the effects of the present invention should be further understood from the overall description in the specification, and even if not explicitly stated, if an effect can be recognized as having such effect through the present specification by a person of ordinary knowledge in the technical field to which the described content belongs, it should be considered as an effect described in the present specification.

[0036] FIG. 1 is a drawing showing a mesh fabric for a shoe upper according to the present invention.

[0037] FIGS. 2 and FIGS. 3 are drawings showing a shoe with an upper applied according to the present invention.

[0038] FIG. 4 is an enlarged view showing the configuration of the heat-fused portion of the mesh fabric and sub-pattern of FIG. 3.

[0039] FIG. 5 is a drawing showing another yarn structure for a mesh fabric for a shoe upper according to the present invention.

[0040] *Explanation of symbols for major parts of the drawing*

[0041] 10 : Slope

[0042] 20 : Weft

[0043]

[0044] In this application, terms such as “comprising,” “having,” or “having” are intended to specify the existence of the features, numbers, steps, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0045] Furthermore, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application.

[0046]

[0047] Embodiments of the present invention will be described below with reference to the attached drawings.

[0048]

[0049] In the first embodiment of the mesh fabric for a shoe upper according to the present invention, elastic yarns are used for the warp and weft, and strength reinforcing yarns and melt bonding yarns are used between the elastic yarns to weave the fabric.

[0050] The warp and weft yarns for the above mesh fabric are manufactured as monofilament or multifilament yarns; for example, the yarn for strength reinforcement is manufactured as multifilament, and the yarn for melt bonding is manufactured as monofilament.

[0051] In addition, the yarns constituting the mesh fabric may be manufactured by adding functional materials during the spinning process, for example, by including antibacterial or deodorizing agents, or by including dyes.

[0052] However, if the amount of added material increases in this way, problems such as the yarn breaking or uneven thickness may occur during the spinning process, so the amount added is used at 2-10% by weight based on the total weight of the yarn resin.

[0053] In addition, additives may be mixed and spun as described above to impart color or functionality to the aforementioned yarn, or a resin layer containing functional additives may be coated on the outer circumference of the yarn to form a core-sheath structure.

[0054] And the above elastic yarn, strength reinforcing yarn, and melt bonding yarn are all mixed and used as a single strand for warp and weft, or each yarn forms a single strand for warp and weft and is woven in a specific arrangement.

[0055] For example, multiple strands of melt bonding yarn can be sequentially arranged and used as warp and weft threads, followed by multiple strands of elastic yarn, and then multiple strands of strength reinforcing yarn can be sequentially arranged and used.

[0056] As another example, the above elastic yarn, strength reinforcing yarn, and melt bonding yarn are used one strand each in sequence for the warp and weft.

[0057] As another example, only elastic yarns can be used for the warp, while elastic yarns, steel reinforcement yarns, and melt bonding yarns can be arranged sequentially as weft yarns.

[0058] In addition, it can be used with various combinations of warp and weft threads.

[0059]

[0060] Meanwhile, in one embodiment of the mesh fabric for a shoe upper according to the second embodiment of the present invention, elastic yarns are used for the warp and weft, and a mixed yarn is woven using a mixture in which a strength reinforcing material and a melt adhesive material are mixed and spun between the elastic yarns, and the remaining conditions are the same as in the first embodiment.

[0061] In the above, the mixed yarn may be formed by spinning the strength reinforcing raw material and the melt adhesive raw material into a sheath-core structure, or the strength reinforcing raw material and the melt adhesive raw material may be formed to have a uniform arrangement in the cross-section of the yarn.

[0062]

[0063] TPEE is used as an example of the elastic yarn mentioned above. TPEE (thermoplastic elastomeric polyester elastomer) is a thermoplastic polyester elastomer, which is a polymer material that possesses the properties of both rubber and plastic.

[0064] Specifically, the above TPEE yarn has excellent tensile strength and durability, so when used as yarn, it has excellent abrasion resistance and durability and a long lifespan.

[0065] In addition, it has thermoplastic properties and can maintain stable properties even at relatively high temperatures. Typically, it can be used in high-temperature environments as there is little change in properties even at high temperatures of 200°C or higher.

[0066] And it exhibits strong resistance to various chemical environments, such as chemicals, oils, and grease.

[0067] In addition, it provides elasticity and flexibility similar to rubber, offering excellent shock absorption and resilience.

[0068] And TPEE is a recyclable thermoplastic material that has a small environmental impact and supports eco-friendly production and disposal processes.

[0069] Yarns that can replace the characteristics of TPEE include spandex yarn, polyurethane yarn, nylon yarn, and polyester yarn, and these yarns provide excellent elasticity and stretchability.

[0070]

[0071] PVDF (Polyvinylidene fluoride), a type of fluoropolymer, is used as the above-mentioned strength reinforcing yarn.

[0072] The above PVDF provides a high tensile strength of 50-70 MPa, which allows it to withstand external physical forces well, is resistant to friction, and has low wear, providing a long service life.

[0073] It also has very strong resistance to various chemicals, acids, bases, and organic solvents.

[0074] It can maintain stable mechanical strength even at high temperatures, with a typical operating temperature range of -40°C to 150°C and a short-term range of up to 175°C.

[0075] In addition, it does not break easily when sudden force is applied or it is subjected to impact, has excellent resistance to twisting or bending, withstands aging caused by UV, oxygen, and heat well, and has minimal reduction in strength even under long-term environmental changes.

[0076] Yarns that can replace the aforementioned PVDF include high-strength polyester yarn, polyamide (Nylon) yarn, carbon yarn, and polyvinyl chloride (PVC) yarn. These yarns provide strength similar to PVDF and possess excellent properties such as durability, chemical resistance, and heat resistance, making them suitable alternative materials for manufacturing mesh fabrics.

[0077]

[0078] EVA (ethylene vinyl acetate) yarn is used as the above-mentioned melt adhesive yarn, and the above-mentioned EVA is a copolymer of ethylene and vinyl acetate, which is a thermoplastic resin that possesses the properties of both rubber and plastic.

[0079] Yarns made from this EVA resin provide flexibility and elasticity similar to rubber, have excellent shock absorption and cushioning properties, and are relatively lightweight, making them suitable for sports and fitness equipment and enabling the creation of products that can be worn for extended periods.

[0080] It also possesses excellent durability and resistance to wear.

[0081] And it has strong properties against moisture and oil.

[0082] In addition, it has the characteristic of combining well with other substances.

[0083] Suitable yarns to replace the above EVA yarn include those with excellent adhesive properties, such as polyurethane yarn, polyester yarn, nylon yarn, and high-strength polypropylene yarn.

[0084]

[0085] As a preferred embodiment of the present invention, as shown in FIG. 1, TPEE yarn is used as the warp (10), and PVDF yarn, TPEE yarn, and EVA yarn are arranged and woven in the weft (20).

[0086] As mentioned above, PVDF yarn, TPEE yarn, and EVA yarn can be mixed and used as a single weft yarn, or PVDF yarn, TPEE yarn, and EVA yarn can be arranged and used as multiple weft yarns, as shown in FIG. 1, and can also be arranged and used in various other combinations.

[0087] Meanwhile, the TPEE yarn mentioned above is a monofilament yarn, the PVDF yarn is a multifilament yarn, and the EVA yarn is a monofilament yarn.

[0088] At this time, the weaving is performed on a dobby or jacquard loom, and a Leno weave is used as an example of the weave. The Leno weave is produced by crossing two strands of yarn with the warp yarns to intertwine the weft yarns, so that the weft yarns are firmly maintained and cannot move in the direction of the warp yarns.

[0089] As described above, the woven fabric is processed in a tenter machine at a predetermined temperature and speed to ensure that the warp and weft threads are heat-fused so that the threads do not separate.

[0090] At this time, if the temperature of the turntable processing is lower than the set temperature or the processing speed is higher than the set speed, heat fusion does not occur, and if the temperature is higher than the set temperature or the processing speed is lower than the set speed, gas is released and product defects occur.

[0091] Meanwhile, since the melting temperatures of the above EVA and PVDF are different, in the embodiment of the present invention, tenter processing is performed at the melting temperature of EVA (80-100℃).

[0092]

[0093] As an example of a shoe made with a mesh fabric for the upper configured in this way, as shown in FIG. 2, pigments are mixed during the yarn melting process to produce yarns of various colors, and yarns of various colors can be selected during the weaving process to form a desired pattern.

[0094] In addition, as shown in FIGS. 3 and 4, the sub-pattern (200) and the mesh fabric (100) for the upper can be bonded without using a separate adhesive by fusion between the yarns and between the yarns and the sub-pattern through heat fusion.

[0095]

[0096] Meanwhile, as shown in FIG. 5, as an example of a mixed yarn in which a strength reinforcing material and a melt adhesive material are mixed and spun in the second embodiment of the present invention, PVDF, which is a strength reinforcing material, and EVA, which is a melt adhesive material, may be spun into a sheath-core structure, and the strength reinforcing material and the melt adhesive material may be formed to have a uniform arrangement in the cross-section of the yarn.

[0097]

[0098] Therefore, the shoe equipped with an upper made of the mesh fabric of the present invention can be used alone as the mesh fabric secures its own strength, so there is no need to use other auxiliary materials, making it lightweight, and since an overlapping structure is not required, it has excellent breathability.

[0099] In addition, since the subpattern is heat-fused with the above EVA yarn, it has excellent adhesive properties, so there is no need to use a separate adhesive (hot melt film), and thus, even if stored for a long time, the problem of the adhesive melting out and causing inconvenience does not occur.

[0100] In addition, the above mesh fabric maintains its shape over time and has excellent abrasion resistance.

[0101] In addition, according to the present invention configured as described above, the upper can be manufactured from a single piece of fabric, thereby enabling the upper to be manufactured as a one-piece, which improves productivity.

[0102] In other words, the mesh fabric of the present invention does not require a hot melt film for adhesion or other components for enhancing durability, and allows sub-patterns or logos to be simply attached when necessary.

[0103]

Claims

1. A mesh fabric for shoe uppers characterized by being woven using a mixture of elastic yarn, strength reinforcing yarn, and melt bonding yarn in the warp and weft.

2. A mesh fabric for a shoe upper according to claim 1, characterized in that the mesh fabric uses elastic yarns as warp threads and arranges elastic yarns, strength reinforcing yarns, and melt bonding yarns as weft threads.

3. A mesh fabric for a shoe upper characterized by being woven using a mixture of elastic yarn, strength reinforcing material, and melt adhesive material mixed and spun, mixed in the warp and weft.

4. The above mesh fabric uses elastic yarns as warp threads and arranges elastic yarns and mixed yarns as weft threads.

5. A mesh fabric for a shoe upper according to claim 1 or 3, characterized in that the mesh fabric is woven in a Leno weave.

6. A mesh fabric for a shoe upper, characterized in that, in either claim 1 or claim 3, the elastic yarn is selected from TPEE yarn, spandex yarn, polyurethane yarn, nylon yarn, and polyester yarn.

7. A mesh fabric for a shoe upper, characterized in that, in either claim 1 or claim 3, the strength reinforcing raw material of the strength reinforcing yarn or blended yarn is selected from PVDF, high-strength polyester, polyamide, carbon, and polyvinyl chloride (PVC).

8. A mesh fabric for a shoe upper, characterized in that, in either claim 1 or claim 3, the raw material for melt bonding of the melt bonding yarn or mixed yarn is selected from EVA, polyurethane, polyester, nylon, and high-strength polypropylene.

9. A shoe upper characterized by being composed of a mesh fabric woven using a mixture of elastic yarn, strength reinforcing yarn, and melt bonding yarn in the warp and weft, and formed into a predetermined shape as a one-piece by heat-fusion through tenter processing.

10. A shoe upper characterized by being composed of a mesh fabric woven using a mixture of elastic yarn, strength reinforcing material, and melt bonding material mixed and spun in the warp and weft, and heat-fused through tenter processing to be formed into a one-piece shape.

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