WO2021118023A1 - 다공성 신발중창 제조방법 및 이를 이용한 다공성 신발중창 - Google Patents
다공성 신발중창 제조방법 및 이를 이용한 다공성 신발중창 Download PDFInfo
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- WO2021118023A1 WO2021118023A1 PCT/KR2020/012817 KR2020012817W WO2021118023A1 WO 2021118023 A1 WO2021118023 A1 WO 2021118023A1 KR 2020012817 W KR2020012817 W KR 2020012817W WO 2021118023 A1 WO2021118023 A1 WO 2021118023A1
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- melting
- midsole
- porous
- fiber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/003—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor characterised by the choice of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/006—Pressing and sintering powders, granules or fibres
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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
- A43B1/025—Plant fibres
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B1/00—Footwear characterised by the material
- A43B1/06—Footwear characterised by the material made of wood, cork, card-board, paper or like fibrous material
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/026—Composites, e.g. carbon fibre or aramid fibre; the sole, one or more sole layers or sole part being made of a composite
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/06—Footwear with health or hygienic arrangements ventilated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/14—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D35/00—Producing footwear
- B29D35/0054—Producing footwear by compression moulding, vulcanising or the like; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D35/00—Producing footwear
- B29D35/12—Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique
- B29D35/122—Soles
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J201/00—Adhesives based on unspecified macromolecular compounds
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
- D04H1/544—Olefin series
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/009—Shaping techniques involving a cutting or machining operation after shaping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/48—Wearing apparel
- B29L2031/50—Footwear, e.g. shoes or parts thereof
- B29L2031/504—Soles
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
- D10B2321/021—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
- D10B2321/022—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polypropylene
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2501/00—Wearing apparel
Definitions
- the present invention relates to a method for manufacturing a porous shoe midsole and a porous shoe midsole using the same, and more specifically, to a method for manufacturing a porous shoe midsole having a high porosity and excellent ventilation and elasticity, and a porous shoe midsole using the same.
- the shoe midsole is attached to the upper surface of the shoe sole in the upper that is combined with the sole of the shoe to close the curved part made of the groove of the sole of the shoe, and is used to improve the fit when inserting the shoe insole. I use it with a shoe insole.
- the shoe midsole is made of one of the synthetic resin materials of urethane foam, PVC, TPR, or EVA, with excellent durability to stably support the weight of the wearer.
- PVC polyurethane foam
- TPR thermoplastic polyurethane foam
- EVA urethane foam
- the raw material is 40 kg of cotton, 80 kg of fiber of coconut husk, and 30 kg of polypropylene in a process of fine grinding and mixing by putting the weight of 30 kg of water into 3000 kg, and the mixed raw material is plate-shaped
- the bonding material is applied again, and again, as above, at
- Patent Registration No. 10-0661932 which is another prior art, a midsole manufactured by cutting a single disk-sponge composite, an iron core positioned on the lower surface of the midsole, and a reinforcing window positioned on the lower surface of the iron core, the midsole A sponge layer is formed to cover from the front end to the middle of the silver disk, and the material of the disk is any one selected from the group consisting of a paper compressed material, a fiber compressed material, and a non-woven fabric.
- the thickness of the sponge is gradually tapered from a point less than the middle part at the front shaft end of the disc, and a temperature of 100° C. to 600° C.
- the manufacturing process is complicated due to the multi-layer structure consisting of an iron core, a reinforcing window, a sponge layer, and an original plate.
- ventilation is not smooth, so when exposed to a humid environment, A negative effect followed, in which the reproduction of various harmful bacteria was activated.
- Patent Document 1 KR 10-1622706 B1 (2016.05.13.)
- Patent Document 2 KR 10-0661932 B1 (2006.12.20.)
- an object of the present invention is to provide a method for manufacturing a porous shoe midsole in which the central region (L2) has different densities and strengths from each other, and a porous shoe midsole using the same.
- a feature of the present invention is the other surface step (S1) of mixing the low-melting-point fiber 12 and the high-melting-point fiber 14 to form a midsole 10 having porous pores 16;
- the low melting point fiber (LMF) 12 is formed of a synthetic fiber yarn of 3 to 7 denier having a melting point of 140 ° C. or less, and the high melting point fiber 14 has a melting point of 160 to 250 ° C. or more. It is made of any one or more of 40 denier polyethylene yarn and polypropylene yarn, and the midsole 10 is put into a heated press mold at the melting point temperature of the low-melting fiber 12 at a pressure of 100 kg/cm2 to 120 kg/cm2. It is characterized in that it is provided for compression thermoforming.
- the midsole 10 is cut to a size including the shoe midsole 100 region and the discarded part 200 region and thermoformed by compression in a press mold, and the midsole midsole part A cut-out groove 300 is formed at the boundary between 100 and the throwing part 200, and the shoe midsole part 100 is taken out from the press mold together with the throwing part 200 after compression thermoforming and cooled and hardened. It is characterized in that it is provided so that the shape is supported by the discarding part (200).
- the porous shoe midsole using the porous shoe midsole manufacturing method according to the present invention is a low-melting-point fiber by mixing the low-melting-point fiber 12 and the high-melting-point fiber 14 to the midsole 10 having porous pores 16.
- the porous voids 16 are formed between the high-melting-point fibers 14 by the melt adhesion of the low-melting-point fibers 12, and compression-adhered to the shoe midsole (100) It is characterized in that it comprises a configuration to form a.
- the bottom edge region L1 of the shoe midsole 100 is compression thermoformed to a thinner thickness than the central region L2, so that the intaglio belt groove 110 to which the shoe upper 1 is attached is formed, and the edge region (L1) is characterized in that the low-melting-point fiber 12 and the high-melting-point fiber 14 are melt-bonded together to form a heterogeneous layer having a density and strength different from that of the central region (L2).
- the reinforcing band groove 120 is formed at the bottom of the central region L2, and the reinforcing band groove 120 is melt-bonded with the low-melting fiber 12 and the high-melting fiber 14 together, compared to the central region L2. It is characterized in that it is formed as a high-density layer.
- the reinforcing band groove 120 is formed in the region corresponding to the midfoot portion P2 and the back portion P3 of the central region L2 of the shoe midsole 100 to constitute the reinforcement plate 101, and the foot
- the central region L2 corresponding to the front portion P1 is characterized in that the reinforcing band groove 120 is not formed and is formed as an elastic plate portion 102 that is flexibly bent and deformed in response to the bending motion of the toe bone during walking.
- the present invention is adhesively fixed by compression thermoforming using the melting point temperature difference between the low-melting-point fiber and the high-melting-point fiber, and the rim (edge) portion of the midsole has high density and thus has high strength and durability. great.
- the central region of the midsole has a low density as the high-melting-point fibers are point-adhered by the low-melting-point fibers, and thus has a high porosity, and thus the ventilation and elasticity are greatly improved. It is very useful as a midsole for functional shoes.
- FIG. 1 is a flow chart showing a method for manufacturing a porous shoe midsole provided by the present invention.
- Figure 2 is a schematic flow chart step by step of the porous shoe midsole manufacturing method according to the present invention.
- Figure 3 is a block diagram showing a porous shoe midsole manufactured by the method of manufacturing a porous shoe midsole of the present invention.
- Figure 4 is a longitudinal cross-sectional view showing the engraved band groove of the porous shoe midsole of the present invention.
- Figure 5 is a configuration diagram showing a state in which the reinforcing band groove of the porous shoe midsole is formed.
- Figure 6 is a bottom perspective view showing an example of a reinforcing band groove formed on the bottom surface of the porous shoe midsole.
- FIG. 1 is a flowchart illustrating a method for manufacturing a porous shoe midsole provided by the present invention
- FIG. 2 is a flowchart schematically illustrating a method for manufacturing a porous shoe midsole according to the present invention.
- the present invention relates to a method for manufacturing a porous shoe midsole and a porous shoe midsole using the same, which is adhered and fixed by compression thermoforming using a melting point temperature difference between a low-melting-point fiber and a high-melting-point fiber, so that it has excellent strength and water resistance, particularly low-melting-point fiber
- the high-melting-point fiber is point-bonded by the high porosity and consists of a main configuration including the other surface step (S1) and the crack forming step (S2) in order to have ventilation and elasticity.
- the other surface step (S1) according to the present invention is a step of mixing the low-melting-point fiber 12 and the high-melting-point fiber 14 to form the midsole 10 having porous pores 16 .
- the low-melting fiber 12 and the high-melting fiber 14 are prepared in the form of mixed cotton, put into a cotton pad, and fixed to the tissue by needle punching while riding to a certain thickness, in this case, the thickness of the midsole 10 is described later.
- the compression ratio in the thermoforming step (S2) it is formed in a size that is 2 to 4 times thicker than the final product, the thickness of the midsole of the shoe.
- the low-melting-point fiber 12 is formed of a synthetic fiber yarn of 3 to 7 denier having a melting point of 140° C. or less
- the high-melting point fiber 14 is a polyethylene yarn of 3 to 40 denier having a melting point of 160 to 250° C. or more, polypropylene consisting of one or more of the four
- the heat-melting fiber 14 is applied to a polyethylene yarn to form a shoe midsole, a texture close to a fabric is provided, and by applying a polypropylene yarn to a shoe midsole, a texture close to paper is provided.
- the heat melting point fiber 14 is formed to a thickness of 3 to 40 denier, it undergoes a thermoforming step (S2) to be described later to form the shoe midsole 100, which is the final product, between the heat melting point fibers 14.
- S2 thermoforming step
- a void is formed in the bar, where the heat melting point fiber 14 has an inverse relationship in that the larger the denier, the higher the porosity increases but the strength decreases, and the smaller the porosity is reduced but the strength is improved.
- the hot-melting-point fiber 14 has a melting point temperature of 160 to 250° C. or higher
- the low-melting-point fiber 12 for melt-bonding the hot melting point fiber 14 is less than 160° C., that is, while having a melting point temperature of 140° C. or less. It is formed from a synthetic fiber yarn with excellent adhesion.
- the components and materials of the high-melting-point fiber 14 are specified in the above, it is not limited thereto, and a configuration in which monofilament yarns or synthetic filament yarns having different melting points are applied is also possible.
- the low-melting-point fiber 12 is first melted at a lower temperature than the high-melting-point fiber 14 in the thermoforming step (S2) to be described later as it is formed of a low melting material having a melting point of 140° C. or less.
- the melting point fibers 14 are molded to form porous pores 16 therein in a point-adhesive state (a portion shown as 'A' in FIG. 3).
- the mixing amount of the low-melting-point fiber 12 is reduced compared to the high-melting-point fiber 14, the porosity of the final result, the midsole of the shoe increases, but the hardness decreases, and as the mixing amount of the low-melting-point fiber 12 increases, the porosity decreases, but the hardness Since has a mutually organic relationship to increase, it is possible to appropriately adjust the amount of the low-melting fiber 12 according to the type of shoe used in the shoe midsole produced by the present invention. For example, when applied to relatively hard shoes such as military boots, safety shoes, and formal shoes, the mixing ratio of the low-melting fiber 12 is increased, and in lightweight and highly elastic shoes such as running shoes or sports shoes, the mixing ratio of the low-melting fiber 12 is increased. It would be desirable to lower it to increase ventilation.
- the midsole 10 is compression thermoformed at the melting point temperature of the low-melting-point fiber 12, and the high-melting-point fiber 14 is formed by the melt adhesion of the low-melting-point fiber 12.
- the midsole 10 is thermoformed by compression at a pressure of 100 kg/cm2 to 120 kg/cm2 at the melting point temperature of the low-melting fiber 12 by putting the midsole 10 into a heated press mold.
- the midsole 10 that has undergone the step S1 is in an uncompressed state with a thickness of 7 to 12 mm, and is compressed and thermoformed in the thermoforming step (S2) to a thickness of 2 to 5 mm and simultaneously compressed to a high melting point fiber (14). ) are adhesively fixed by the low-melting fiber 12 and manufactured as a shoe midsole in the form of a compression plate having a certain strength.
- the compression thermoforming time of the thermoforming step (S2) is delayed, the low melting point fibers 12 are excessively melted and agglomerated with each other to form a film, resulting in a decrease in porosity, and conversely, if the compression thermoforming time is short, the applied Since all of the low-melting-point fibers 12 cannot be melted, leading to a decrease in strength, preferably, the compression thermoforming time is set to 20 to 40 seconds to obtain an optimal bonding state between the low-melting-point fibers 12 and the high-melting-point fibers 14. to form
- the shoe midsole manufactured by this manufacturing method has excellent air permeability, and the strength and elasticity of the midsole are improved, so that it has excellent shape retention even when manufactured as an ergonomic and three-dimensional midsole according to the curvature of the sole. Therefore, when applied as a midsole for hard shoes such as formal shoes or military boots, it has the advantage of providing a pleasant and comfortable fit due to its ergonomic shape with excellent breathability.
- the midsole 10 is cut to a size including the shoe midsole 100 region and the discarded part 200 region and thermoformed by compression in a press mold, and the midsole midsole part A cutting groove 300 is formed at the boundary between 100 and the discarding part 200 .
- the cut-out groove 300 is thinly formed to a thickness of 10-20% based on the thickness of the midsole for footwear, which is the final product, and when it is cooled and hardened after compression heat, the midfoot midsole part 100 and the discarded part with the cut-out groove 300 as a boundary (200) is separated.
- the shoe midsole part 100 is taken out from the press mold together with the throwing part 200 after compression thermoforming, and the shape is supported by the throwing part 200 during cooling and hardening. . Accordingly, after compression thermoforming, deformation due to bending is prevented while taking out the shoe midsole part 100, and the shape is supported by the discard part 200 even during cooling and hardening, thereby preventing distortion and deformation.
- FIG. 3 is a configuration diagram showing a porous shoe midsole manufactured by the method for manufacturing a porous shoe midsole of the present invention
- FIG. 4 is a longitudinal cross-sectional view showing an intaglio band groove of the porous shoe midsole of the present invention
- FIG. 5 is a reinforcing band groove of the porous shoe midsole It is a configuration diagram showing the state in which the
- the porous shoe midsole using the porous shoe midsole manufacturing method according to the present invention is a low-melting-point fiber (12) mixed with a low-melting-point fiber (12) and a high-melting-point fiber (14) into a midsole (10) having porous pores (16). ) by compression thermoforming at a melting point temperature of the low-melting-point fiber 12 by the melt-adhesive force of the high-melting-point fibers 14 to form a porous void 16 between the high-melting-point fibers 14 and compression-adhesive to form the shoe midsole 100 including the configuration to
- the porous shoe midsole is a configuration formed by the porous shoe midsole manufacturing method, a detailed description of the manufacturing method will be omitted.
- the bottom edge region L1 of the shoe midsole 100 is compression thermoformed to a thinner thickness than the central region L2, so that the intaglio belt groove 110 to which the shoe upper 1 is attached in the shoe manufacturing process is formed.
- the edge region (L1) is formed as a heterogeneous layer having a thickness, density, and strength different from that of the central region (L2) by melt-bonding the low-melting-point fiber 12 and the high-melting-point fiber 14 together.
- the intaglio band groove 110 is formed in the bottom edge region L1 of the midsole 10, and the intaglio The band groove 110 is recessed to a depth of 1.6-2.4mm in consideration of the 1.6-2.4mm thickness of the shoe upper 1 .
- the central region L2 is formed to have a thickness 1.5 to 3 times greater than that of the edge region L1.
- the thick central region L2 has a lower density than the relatively thin edge region L1, but has high air permeability, elasticity, and flexibility.
- the shoe upper 1 when the shoe upper 1 is coupled to cover the edge of the bottom surface of the midsole 10 during the manufacturing process of the shoe, the shoe upper 1 is attached to the intaglio belt groove 110 as shown in FIG. 4, and the shoe upper 1 is attached.
- the flatness of the bottom surface of the midsole 10 is maintained even after, the fixing force with the sole of the shoe is strong, and the shape of the midsole can be maintained even after wearing the shoe.
- FIG. 5 is a configuration diagram showing an example in which a reinforcement belt groove is formed in the porous shoe midsole provided in the present invention
- FIG. 6 is a bottom perspective view showing an example in which a reinforcement belt groove is formed on the bottom surface of the porous shoe midsole, the central region (L2) )
- a reinforcing band groove 120 is formed at the bottom, and the reinforcing band groove 120 is formed as a high-density layer compared to the central region L2 by melting the low-melting fiber 12 and the high-melting fiber 14 together. is thin, but has high strength and low breathability.
- Reinforcement band groove 120 is compression thermoformed to a thickness 10-50% thinner than that of the central region (L2), and is arranged in a grid shape over the entire region of the central region (L2) as shown in FIG. By reinforcing the foot, the midfoot part (P2) and the back part (P3) of the sole are stably supported.
- the reinforcing band groove 120 is the central region L2 of the shoe midsole 100, the midfoot portion P2 and the heel portion P3. ) is formed in the region corresponding to the reinforcing plate portion 101, and the central region (L2) corresponding to the forefoot portion P1 may be composed of an elastic plate portion 102 in which the reinforcing belt groove 120 is not formed. .
- the reinforcing band groove 120 having high strength is not formed in the forefoot portion so that it is flexibly deformed while having an elastic force in response to the bending motion of the toe bone during walking.
- the midsole 100 of the shoe has high strength by the reinforcing belt groove 120 in the region corresponding to the midfoot portion P2 and the back foot portion P3, whereas the region corresponding to the forefoot portion P1 is flexible
- the action of the sole of the shoe is soft when walking, providing a soft feeling of wearing to accommodate the bending motion of the toe bone, and has the effect of providing relatively higher ventilation to the pressure-pressing part where sweat is generated.
- FIG. 7 and 8 are extracts of the results of testing air permeability and moisture permeability by providing a sample of the present invention to FITI (Fabric Inspection Testing Institute), an accredited testing research institute in Korea, in order to objectively examine air permeability and moisture permeability.
- the tested sample corresponds to the central region L2 of FIG. 3 .
- the volume (cm3) of air passing through 1 cm2 of fabric in 1 second under the condition of a pressure difference of 200 Pa was 302.3 (cm3/cm2/s).
- the shoe midsole manufactured by the manufacturing method of the present invention has high strength to prevent distortion of the shoe sole and has excellent breathability and moisture permeability, so it can be widely used as a sole for functional shoes.
- porous shoe midsole manufacturing method according to the present invention and the porous shoe midsole using the same have excellent strength due to high density in the rim (edge) portion of the midsole, and the central region of the midsole has excellent ventilation, so its utility as a midsole for functional shoes is very high. high invention.
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Abstract
Description
Claims (7)
- 저융점 섬유(12)와 고융점 섬유(14)를 혼합하여 다공성 공극(16)을 가진 중창지(10)를 형성하는 타면단계(S1);상기 중창지(10)를 저융점 섬유(12)의 용융점 온도로 압축 열성형하여, 저융점 섬유(12)의 용융 접착력에 의해 고융점 섬유(14)들을 압축상태로 접착 고정하는 열성형단계(S2);를 포함하여 이루어지는 것을 특징으로 하는 다공성 신발중창 제조방법.
- 제 1항에 있어서,상기 저융점 섬유(12)는 융점이 140℃이하인 3~7데니어의 합성섬유사로 형성되고, 상기 고융점 섬유(14)는 융점이 160~250℃이상인 3~40데니어의 폴리에틸렌사, 폴리프로필렌사 중 어느 하나 이상으로 이루어지며, 상기 중창지(10)는 히팅된 프레스금형에 투입되어 저융점 섬유(12)의 용융점 온도에서 100kg/cm²내지 120kg/cm²압력으로 압축 열성형되도록 구비되는 것을 특징으로 하는 다공성 신발중창 제조방법.
- 제 1항에 있어서,상기 열성형단계(S2)에서, 상기 중창지(10)은 신발 중창부(100) 영역과 버림부(200) 영역을 포함하는 사이즈로 재단되어 프레스금형에서 압축 열성형되고, 중발 중창부(100)와 버림부(200) 경계에는 따내기홈(300)이 형성되며, 상기 신발 중창부(100)는 압축 열성형 후, 버림부(200)와 함께 프레스금형에서 취출되어 냉각 경화되는 동안 버림부(200)에 의해 형상이 지지되도록 구비되는 것을 특징으로 하는 다공성 신발중창 제조방법.
- 청구항 제 1항 내지 제 3항 중 어느 한 항의 다공성 신발중창 제조방법을 이용하여, 저융점 섬유(12)와 고융점 섬유(14)를 혼합하여 다공성 공극(16)을 가진 중창지(10)를 저융점 섬유(12)의 용융점 온도로 압축 열성형하여, 저융점 섬유(12)의 용융 접착력에 의해 고융점 섬유(14)들 사이에 다공성 공극(16)이 형성된 상태로 압축 접착되어 신발 중창부(100)를 형성하는 구성을 포함하여 이루어지는 것을 특징으로 하는 다공성 신발중창 제조방법을 이용한 다공성 신발중창.
- 제 4항에 있어서,상기 신발 중창부(100) 저면 가장자리영역(L1)은 중앙영역(L2) 대비 얇은 두께로 압축 열성형되어, 신발갑피(1)가 부착되는 음각띠홈(110)이 형성되고, 상기 가장자리영역(L1)은 저융점 섬유(12)와 고융점 섬유(14)가 함께 용융 접합되어 중앙영역(L2)과 상이한 밀도와 강도를 가진 이종계층으로 형성되는 것을 특징으로 하는 다공성 신발중창 제조방법을 이용한 다공성 신발중창.
- 제 4항에 있어서,상기 신발 중창부(100) 저면 가장자리영역(L1)을 제외한 중앙영역(L2)의 바닥에 보강띠홈(120)이 형성되고, 상기 보강띠홈(120)은 저융점 섬유(12)와 고융점 섬유(14)가 함께 용융 접합되어 중앙영역(L2) 대비 고밀도층으로 형성되는 것을 특징으로 하는 다공성 신발중창 제조방법을 이용한 다공성 신발중창.
- 제 6항에 있어서,상기 보강띠홈(120)은 신발 중창부(100)의 중앙영역(L2)에서 발중간부(P2) 및 발뒤부(P3)와 대응하는 영역에 형성되어 보강판부(101)를 구성하고, 발앞부(P1)와 대응하는 중앙영역(L2)은 보강띠홈(120)이 미형성되어 보행시 발가락뼈의 굽힘 동작에 대응하여 유연하게 굽힘 변형되는 탄성판부(102)로 형성되는 것을 특징으로 하는 다공성 신발중창 제조방법을 이용한 다공성 신발중창.
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CN202080079576.5A CN114761220B (zh) | 2019-12-09 | 2020-09-23 | 多孔性鞋中底制造方法及使用其的多孔性鞋中底 |
US17/779,762 US20220410442A1 (en) | 2019-12-09 | 2020-09-23 | Method for manufacturing porous midsole, and porous midsole using same |
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KR10-2019-0163025 | 2019-12-09 | ||
KR10-2020-0035232 | 2019-12-09 | ||
KR1020190163025A KR102127505B1 (ko) | 2019-07-11 | 2019-12-09 | 다공성 신발중창 제조방법 및 이를 이용한 다공성 신발중창 |
KR1020200035232A KR102263757B1 (ko) | 2019-12-09 | 2020-03-23 | 다공성 신발중창 제조방법 및 이를 이용한 다공성 신발중창 |
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- 2020-03-23 KR KR1020200035232A patent/KR102263757B1/ko active IP Right Grant
- 2020-09-23 US US17/779,762 patent/US20220410442A1/en active Pending
- 2020-09-23 CN CN202080079576.5A patent/CN114761220B/zh active Active
- 2020-09-23 WO PCT/KR2020/012817 patent/WO2021118023A1/ko active Application Filing
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US20220410442A1 (en) | 2022-12-29 |
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CN114761220A (zh) | 2022-07-15 |
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