WO2005006903A1 - Semelle intermediaire en phylon moulée par injection - Google Patents

Semelle intermediaire en phylon moulée par injection Download PDF

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Publication number
WO2005006903A1
WO2005006903A1 PCT/KR2003/001416 KR0301416W WO2005006903A1 WO 2005006903 A1 WO2005006903 A1 WO 2005006903A1 KR 0301416 W KR0301416 W KR 0301416W WO 2005006903 A1 WO2005006903 A1 WO 2005006903A1
Authority
WO
WIPO (PCT)
Prior art keywords
midsole
groove
outsole
injection molded
bonded
Prior art date
Application number
PCT/KR2003/001416
Other languages
English (en)
Inventor
Soo-Hoo Beak
Original Assignee
Soo-Hoo Beak
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Soo-Hoo Beak filed Critical Soo-Hoo Beak
Priority to US10/481,341 priority Critical patent/US20060143950A1/en
Priority to PCT/KR2003/001416 priority patent/WO2005006903A1/fr
Priority to AU2003247183A priority patent/AU2003247183A1/en
Publication of WO2005006903A1 publication Critical patent/WO2005006903A1/fr

Links

Classifications

    • 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
    • A43B13/12—Soles with several layers of different materials
    • A43B13/125—Soles with several layers of different materials characterised by the midsole or middle layer
    • 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
    • A43B13/04—Plastics, rubber or vulcanised fibre
    • 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
    • A43B13/141—Soles; Sole-and-heel integral units characterised by the constructive form with a part of the sole being flexible, e.g. permitting articulation or torsion
    • 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
    • A43B13/18—Resilient soles
    • A43B13/181—Resiliency achieved by the structure of the sole

Definitions

  • the present invention relates to an injection molded Phylon (foam ethylene vinyl acetate) midsole having distinguished advantages, such as increased productivity, improved quality, decreased manufacturing cost, reduced fraction defective, reduced weight or the like, in relation to a conventional injection molded Phylon midsole.
  • Phylon having some physical properties comprising light weight, high elasticity and good shock absorption.
  • a conventional Phylon midsole is manufactured in a sheet shape, and is cut by a press moldinging of the same size as that of a midsole to be made. Then, the cut midsole is ground to conform to a correct shape of the wanted midsole. Since the midsole is cut (punched) by the press molding of the same size as the midsole, a required size variation of the midsole is not large. Therefore, the conventional method may reduce a fraction defective related to the variation. Because material loss is excessive (about 40%) after carrying out the press process, and its productivity is poor, mass production is difficult. For the above reasons, a manufacturing cost is increased, and wasted material should be processed.
  • a method of manufacturing a Phylon midsole using injection molding has been proposed. Specifically, a volume of a midsole molding consisting of an upper molding and a lower molding is adapted to have 60% size relative to actual size of the midsole. Preheated ethylene vinyl acetate comprising a forming agent is injected into the moldings. After the upper and lower moldings are heated during a predetermined time, when the upper and lower moldings are opened, the midsole expanded in the upper and lower moldings is released from the moldings. The injection molded Phylon midsole is completed by the above process.
  • the midsole is formed in the upper and lower moldings at a high pressure and a high temperature and is expanded at the same time as the open of the upper and lower moldings, a size variation of the completed midsole is serious due to factors such as a compounding ratio of the forming agent, a temperature variation of machines, a temperature variation of worksite, weather, a temperature variation resulted from thermal conductivity of heat transferred from an exterior of the molding to an interior thereof. Therefore, it is impossible to manufacture the midsole of uniform size, and a fraction defective is increased, thereby causing the economical loss and failing a production scheme.
  • the size variation of the midsole is very important factor.
  • an allowable size variation of the injection molded Phylon midsole used in present is within a range of ⁇ 2 to 3 mm in relation to a standard size.
  • the midsole deviating from the variation range is not actually allowed due to the defective problem, and is not used.
  • the midsole deviating from the variation range of ⁇ 2 to 3 mm falls into disuse.
  • the present invention can manufacture all of midsoles without falling into disuse.
  • the midsole 1 is bonded to the outsole 2 by carefully bonding edges of them and then forcibly pressing a center portion thereof using a press (referring to Fig. 2).
  • the midsole 1 having a variation of average 2 to 3 mm is forcibly bonded to the outsole 2 to make a shoe, but the completed shoe is almost deformed into a shape shown in Fig. 2. Accordingly, the midsole having a variation of above ⁇ 3 mm should fall into disuse. Referring to Fig.
  • the midsole 1 tends to return to its original size. Specifically, since the bottom surface of the midsole 1 is bonded to the upper surface of the outsole, the bottom surface of the midsole cannot be deformed. Force tending to return to its original size acts upon the upper surface and side of the midsole 1. Therefore, side protrusions lb of the midsole 1 are widened left and right (toward an exterior of the shoe), and the center portion of the midsole convexes to form a center bossed portion la.
  • the center portion of the outsole 2 is deformed with the midsole 1 to form a center bossed portion 2a and thus make a deformed article.
  • the outsole is boned to the midsole of a small size than that of the outsole, a phenomenon contrary to the above description happens. Specifically, the protrusions lb are moved toward the center thereof, and the center bossed portion la are protruded not upwardly but downwardly to a bottom of the midsole 1, i.e., the outsole 2, so that the center portion of the outsole 2 convexes toward the bottom (the ground). These cases must be a defective.
  • the shoes made from the conventional midsole have a poor landing feeling and cause inconvenience to wearer's feet. Since the side protrusions lb always tend to be outwardly spread or inwardly shrunk, the bonding force of the midsole to the shoe upper becomes weak, thereby dissatisfying a consumer. In addition, since the Phylon midsole is not reusable, it falls into disuse as an industrial waste, thereby causing an economical loss and going against environmental protection.
  • an object of the present invention is to solve the problems involved in the prior art, and to provide an injection molded Phylon midsole.
  • an injection molded Phylon midsole manufactured by an upper molding and a lower molding, wherein the midsole is formed with a vertical through-groove, a horizontal through-groove, or a cross through-groove, and wherein when the midsole is bonded to an outsole, the midsole of a proper size within an allowable variation or deviating from the allowable variation widens or constrains the through-groove, so that the midsole is exactly bonded to the outsole without deforming the midsole.
  • Fig. 1 is a cross-sectional view illustrating a state prior to that a conventional Phylon midsole is bonded to an outsole.
  • Fig. 2 is a cross-sectional view illustrating a state of bonding a conventional Phylon midsole to an outsole.
  • Fig. 3 is a perspective view of an injection molded Phylon midsole according to a preferred embodiment of the present invention.
  • Fig. 4 is a cross-sectional view taken along a line 100-100 in Fig. 3.
  • Fig. 5 is a cross-sectional view taken along a line 200-200 in Fig. 3.
  • Fig. 1 is a cross-sectional view illustrating a state prior to that a conventional Phylon midsole is bonded to an outsole.
  • Fig. 2 is a cross-sectional view illustrating a state of bonding a conventional Phylon midsole to an outsole.
  • Fig. 3 is a perspective view of an injection molded Phylon midsole according to a preferred embodiment of the present
  • FIG. 6 is a cross-sectional view illustrating a state of bonding an injection molded Phylon midsole of the present invention to an outsole.
  • Fig. 7 is a plan view of an injection molded Phylon midsole according to one preferred embodiment of the present invention.
  • Figs. 8, 9 and 10 are plan views of an injection molded Phylon midsole according to alternative embodiments of the present invention.
  • Figs. 11, 12 and 13 are plan views of an injection molded Phylon midsole according to alternative embodiments of the present invention.
  • Figs. 14 and 15 are plan views of an injection molded Phylon midsole according to alternative embodiments of the present invention.
  • Fig. 16 is a cross-sectional view of an upper molding and a lower molding for manufacturing the midsole according to one preferred embodiment of the present invention.
  • Fig. 17 is a cross-sectional view illustrating a process of manufacturing the midsole according to one preferred embodiment of the present invention by use of the moldings.
  • an upper molding 30 is prepared to include a protruded portion 30a of a small size than that of a midsole 10 but formed in the same shape as the midsole at a bottom surface thereof.
  • a lower molding 40 is prepared to include a molding cavity 40a of a small size than that of the midsole 10 but formed in the same shape as the midsole.
  • the molding cavity 40a is formed therein with a groove shaping protrusion 40b corresponding to a through-groove 11 formed in the midsole. Then, as shown in Fig. 15, the upper molding 30 is coupled to the lower molding 40, and foam ethylene vinyl acetate comprising a forming agent is injected into the moldings. After the upper and lower moldings 30 and 40 are heated during a predetermined time, if the material is heated and aged, the upper and lower moldings 30 and 40 are opened. Accordingly, the midsole 10 shaped as shown in Figs. 3, 4 and 5 is completed.
  • midsoles 10-1, 10-2, 10-3 and 10-4 with a cross through-groove 11 or a vertical through-groove 11 formed may be manufactured.
  • a midsole with a horizontal through-groove 11 may be manufactured.
  • the midsole 10 manufactured as described above has no any problem due to a size variation. Specifically, the midsole 10 must be precisely bonded to the outsole 2 in the state that each size does not coincide with each other, as shown in Fig. 4.
  • the midsole 10 of the present invention is formed with a horizontal, vertical or cross through-groove 11 at a center portion thereof.
  • An edge of the outsole 2 is first bonded to an edge of the midsole 10, while a center portion of the midsole is lightly pressed. At that time, the center portion of the midsole 10 is spread toward the through-groove 11, and thus a width of the through-groove 11 is reduced (contracted). Simultaneously, the midsole is bonded to the outsole 2. Even though the midsole 10 of the present invention is bonded to the outsole 2, the through-groove 11 is not protruded but contacted by a center convex portion of the midsole so as to maintain a flat state, dissimilar from a conventional midsole 1 (referring to Fig.
  • the midsole 10 of the present invention can be exactly and clearly bonded to the outsole 2.
  • the through-groove 11 is contracted as a contracted groove 11R, as shown in Fig. 6. Width and position of the through-groove 11 or blind groove lib, lie and lid formed at the completed midsole 10 according to the present invention may be freely determined depending upon a variation of the midsole and a design of the shoe. Referring to Figs.
  • a midsole 10 may include a blind groove lib formed at an upper surface thereof and a middle rib 10a formed at a bottom thereof.
  • a middle sole 10 may include a blind groove lie formed at a bottom thereof and a middle rib 10a formed at an upper surface thereof.
  • a midsole 10 may include a symmetrical blind groove lid formed at upper and lower portions thereof and a middle rib 10a formed at a boundary region of the blind groove lid.
  • the middle rib 10a does not matter to the contraction of width and length of the midsole 10, even if the blind groove lib, lie or lid is contracted. The reason is that the middle rib 10a is of about 1 to 2 mm in thickness. If the middle rib 10a obstructs to the bonding work, the middle rib may be simply cut by use of a knife or press molding. Therefore, the midsoles 10 shown in Figs. 11, 12 and 13 may be usefully employed.
  • the middle rib 10a is adapted to have a thickness of 1 mm to 2 mm. If the thickness is less than 1 mm, it is difficult to manufacture the Phylon midsole due to a characteristic of injection foaming work.
  • the thickness of the middle rib 10a is preferably in range of 1 mm to 2 mm.
  • a midsole 10 is formed with at least two holes 11a around a seriously deformed portion of the midsole.
  • the hole 11a may be formed in various shapes such as a circular, an oval or a polygon.
  • the hole 11a has a diameter of 5 to 10 mm. It will be understood that the modification may be applied, similar to the preferred embodiment and alternative embodiments and does not matter to the bonding work with the outsole.
  • the through-groove 11 or hole 11a or the blind grooves lib, lie and lid formed at the midsole of the present invention does not cause inconvenience to wearer's feet.
  • the midsole is more softly bent, thereby improving the wearing feeling of the shoe and also increasing the shock absorption.
  • the present invention is not limited to the shown and illustrated embodiments, but the grooves may have various designs and shapes.
  • the embodiments of the present invention describes the case that the outsole is bonded to the midsole having a large variation than that of the outsole, but a midsole having a small size (a few millimeters) than that of the outsole may be bonded to the outsole by pulling the midsole and bonding them from the edge of the outsole.
  • the present invention employs a method of manufacturing the midsole by cutting (punching) a sheet of Phylon using a press molding, thereby easily manufacturing the Phylon midsole.
  • the through-groove 11 may be formed at the midsole when cutting (punching) the Phylon by use of the press molding.
  • the preset invention may employ the method of manufacturing the Phylon midsol by use of the press molding or other method, besides the injection molding using an upper molding and a lower molding.
  • the present invention may reuse most of midsoles regarded as defective in the conventional process by forming the through-groove 11, the blind grooves lib, lie and lid or the hole 11a, as the above embodiments.
  • the midsole of the present invention is allowable for a wide range of variation, so that it may be bonded to an outsole, without deforming the midsole. Therefore, bonding durability of the midsole and a shoe upper may be remarkably increased, thereby allowing a user to properly put on a shoe and increasing wearing feeling, landing feeling and shock absorption.
  • the present invention does not generate the defective due to the size variation, thereby providing a large economical benefit and contributing to the environmental protection.
  • the bonding work of the midsole of the present invention and the outsole is conveniently implemented. Since the defective does not happen, the productivity is significantly increased, and mass production of articles of the best quality is possible, thereby lowering the manufacturing cost.
  • the midsole of the present invention is formed with the groove, so that its weight may be reduced in relation to a conventional midsole. Therefore, a weight of the shoe may be decreased and its flexibility may be increased, thereby improving the productivity thereof.
  • the groove forming protrusion 40b formed integrally with the lower molding rapidly transfers the heat applied from the exterior to the protruded portion 30a of the upper molding 30, and rapidly and uniformly transfers the heat to the material contained in the upper and lower moldings, thereby decreasing a manufacturing time of the midsole and thus improving its productivity and the quality of the midsole.
  • the present invention may reuse most of midsoles regarded as defective in the conventional process by forming the through-groove 11, the blind grooves lib, lie and lid or the hole 11a, as the above embodiments. Furthermore, the present invention does not generate the defective due to the size variation, thereby providing a large economical benefit and contributing to the environmental protection.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

L'invention concerne une semelle intermédiaire en phylon (mousse d'acétate de vinyle-éthylène) qui, par rapport aux semelles intermédiaires en phylon moulées par injection classiques, possède d'importants avantages, tels que : productivité accrue, meilleure qualité, coût de fabrication réduit, proportion de défectueux réduite, poids réduit, etc.. Par ailleurs, la semelle intermédiaire en phylon moulée par injection est fabriquée par moulage supérieur et moulage inférieur. Cette semelle intermédiaire (10) comporte une rainure traversante verticale (11), une rainure traversante horizontale (11), ou une rainure traversante en croix (11). Lorsqu'elle est collée sur la semelle extérieure (2), la semelle intermédiaire (10) d'une taille correcte, avec une tolérance de variation dans les limites admises, élargit ou restreint la rainure traversante (11) pour adhérer parfaitement à la semelle extérieure (2) sans subir de déformation.
PCT/KR2003/001416 2003-07-16 2003-07-16 Semelle intermediaire en phylon moulée par injection WO2005006903A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US10/481,341 US20060143950A1 (en) 2003-07-16 2003-07-16 Injection molded phylon midsole
PCT/KR2003/001416 WO2005006903A1 (fr) 2003-07-16 2003-07-16 Semelle intermediaire en phylon moulée par injection
AU2003247183A AU2003247183A1 (en) 2003-07-16 2003-07-16 Injection molded phylon midsole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2003/001416 WO2005006903A1 (fr) 2003-07-16 2003-07-16 Semelle intermediaire en phylon moulée par injection

Publications (1)

Publication Number Publication Date
WO2005006903A1 true WO2005006903A1 (fr) 2005-01-27

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ID=34074806

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2003/001416 WO2005006903A1 (fr) 2003-07-16 2003-07-16 Semelle intermediaire en phylon moulée par injection

Country Status (3)

Country Link
US (1) US20060143950A1 (fr)
AU (1) AU2003247183A1 (fr)
WO (1) WO2005006903A1 (fr)

Cited By (2)

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WO2016032586A1 (fr) * 2014-08-25 2016-03-03 Nike Innovate C.V. Article pourvu d'une structure de semelle à plusieurs composants
CN106418896A (zh) * 2016-10-20 2017-02-22 大东亚(福建)体育用品有限公司 一种自适应大小的鞋底和采用该鞋底的鞋

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US8051583B2 (en) * 2007-09-06 2011-11-08 Nike, Inc. Article of footwear with improved stability and balance
US8166592B2 (en) 2009-01-13 2012-05-01 Nike, Inc. Sole with adjustable sizing
US8778251B2 (en) * 2010-09-13 2014-07-15 Sakurai Sports Mfg. Co., Ltd. Method and apparatus for manufacturing one-piece shoe shells having different widths
US9538811B2 (en) * 2013-09-18 2017-01-10 Nike, Inc. Sole structure with holes arranged in auxetic configuration
US9549590B2 (en) * 2013-09-18 2017-01-24 Nike, Inc. Auxetic structures and footwear with soles having auxetic structures
US9456656B2 (en) * 2013-09-18 2016-10-04 Nike, Inc. Midsole component and outer sole members with auxetic structure
US9554622B2 (en) * 2013-09-18 2017-01-31 Nike, Inc. Multi-component sole structure having an auxetic configuration
KR101880103B1 (ko) * 2013-11-14 2018-07-23 삼성전자주식회사 실내기의 전면패널 및 그의 제조방법
US9894958B2 (en) * 2015-01-30 2018-02-20 Wolverine Outdoors, Inc. Flexible article of footwear and related method of manufacture
US20160302519A1 (en) * 2015-04-17 2016-10-20 Adidas Ag Article of Footwear Having a Midsole and Methods of Making the Same
US9615625B1 (en) * 2015-09-17 2017-04-11 Wolverine Outdoors, Inc. Sole assembly for article of footwear
USD841959S1 (en) 2017-03-14 2019-03-05 Wolverine Outdoors, Inc. Footwear sole
USD842596S1 (en) 2017-03-14 2019-03-12 Wolverine Outdoors, Inc. Footwear sole
CN118121006A (zh) * 2017-04-21 2024-06-04 耐克创新有限合伙公司 具有本体感受元件的鞋底结构及鞋底结构的制造方法
USD943259S1 (en) * 2021-03-01 2022-02-15 Nike, Inc. Shoe
USD951615S1 (en) * 2021-04-16 2022-05-17 Nike, Inc. Shoe
USD949532S1 (en) * 2021-04-16 2022-04-26 Nike, Inc. Shoe
USD949531S1 (en) * 2021-04-16 2022-04-26 Nike, Inc. Shoe

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US20030093920A1 (en) * 2001-11-21 2003-05-22 Nike, Inc. Footwear with removable foot-supporting member

Cited By (7)

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Publication number Priority date Publication date Assignee Title
WO2016032586A1 (fr) * 2014-08-25 2016-03-03 Nike Innovate C.V. Article pourvu d'une structure de semelle à plusieurs composants
US10342291B2 (en) 2014-08-25 2019-07-09 Nike, Inc. Article with sole structure having multiple components
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CN106418896B (zh) * 2016-10-20 2018-09-07 大东亚(福建)体育用品有限公司 一种自适应大小的鞋底和采用该鞋底的鞋

Also Published As

Publication number Publication date
US20060143950A1 (en) 2006-07-06
AU2003247183A1 (en) 2005-02-04

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