JP7075992B2 - Manufacturing method of composite material for shoes, mold, and composite material for shoes - Google Patents

Manufacturing method of composite material for shoes, mold, and composite material for shoes Download PDF

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JP7075992B2
JP7075992B2 JP2020514875A JP2020514875A JP7075992B2 JP 7075992 B2 JP7075992 B2 JP 7075992B2 JP 2020514875 A JP2020514875 A JP 2020514875A JP 2020514875 A JP2020514875 A JP 2020514875A JP 7075992 B2 JP7075992 B2 JP 7075992B2
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cavity
particles
mold
shoe
foamed
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JPWO2019202716A1 (en
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健一 原野
義範 藤田
志雄 郭
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GIA-JIU ENTERPRISE MFG. CORPORATION
Asics Corp
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GIA-JIU ENTERPRISE MFG. CORPORATION
Asics Corp
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    • 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
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
    • B29C44/44—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/58—Moulds
    • 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

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

Description

本発明は、靴用複合材の製造方法、金型、および、靴用複合材に関する。 The present invention relates to a method for manufacturing a composite material for shoes, a mold, and a composite material for shoes.

靴は、足を保護するという機能だけでなく、用途や使用場所によって様々な機能が消費者から求められており、靴業界には、大きなビジネスチャンスが存在する。衝撃吸収部を有する靴を履いて歩けば、地面を踏むときの反発力が直接下肢に伝わるのを該衝撃吸収部によって抑制することができる。そのため、衝撃吸収材（発泡材料、エアクッション等）を有する靴が数多く作られており、例えば、靴底用部材として衝撃吸収材を有する靴が知られている。 In addition to the function of protecting the foot, shoes are required by consumers to have various functions depending on the purpose and place of use, and there are great business opportunities in the shoe industry. If a person wears shoes having a shock absorbing portion and walks, the repulsive force when stepping on the ground can be suppressed from being directly transmitted to the lower limbs by the shock absorbing portion. Therefore, many shoes having a shock absorbing material (foam material, air cushion, etc.) are made, and for example, shoes having a shock absorbing material are known as a member for a sole.

台湾実用新案Ｍ５１３６０３、台湾実用新案Ｍ４６７３３８、台湾実用新案Ｍ４０３２２７、台湾特許Ｉ５１９４０１では、発泡方式により靴底用部材を作製している。これら３件の台湾実用新案では、ＥＶＡ（エチレン－酢酸ビニル共重合体）樹脂発泡材を用いている。樹脂を金型内に入れてから加熱加圧発泡を行っている。前記台湾特許では、ＴＰＵ(熱可塑性ポリウレタン)を金型内に入れ、発泡成形している。 In Taiwan Utility Model M513603, Taiwan Utility Model M467338, Taiwan Utility Model M403227, and Taiwan Patent I519401, sole members are manufactured by a foaming method. In these three Taiwan utility models, EVA (ethylene-vinyl acetate copolymer) resin foaming material is used. After putting the resin in the mold, heat and pressure foaming is performed. In the Taiwanese patent, TPU (thermoplastic polyurethane) is placed in a mold and foam molded.

台湾実用新案Ｍ５１３６０３Taiwan Utility Model M513603 台湾実用新案Ｍ４６７３３８Taiwan Utility Model M467338 台湾実用新案Ｍ４０３２２７Taiwan Utility Model M403227 台湾特許Ｉ５１９４０１Taiwan Patent I519401

上述した特許では、ＴＰＵ発泡技術を用いており、得られた靴底用部材は、弾力性に優れ、圧縮による永久変形がし難いものとなるが、発泡後の靴底用部材に接着剤を塗り、そして、耐摩耗性及び滑り止め機能を有するゴム又はＥＶＡで作製した靴用パーツを貼り合せることが必要となる。よって、接着剤を塗る時間がかかってしまう。また、靴用パーツと靴底用部材との接着強度を高めることも求められる。 In the above-mentioned patent, TPU foaming technology is used, and the obtained sole member has excellent elasticity and is difficult to be permanently deformed by compression. However, an adhesive is applied to the foamed sole member. It is necessary to apply and bond shoe parts made of rubber or EVA with wear resistance and non-slip function. Therefore, it takes time to apply the adhesive. It is also required to increase the adhesive strength between the shoe parts and the sole member.

また、工業的に大量生産できるように縦型大面積の金型が求められ、また、従来のＴＰＵ発泡では、縦型発泡できる金型が用いられている。本発明では、今までにないＴＰＵ発泡の金型を水平に設置することを検討した。 Further, a vertical large-area mold is required so that it can be mass-produced industrially, and in the conventional TPU foaming, a mold capable of vertical foaming is used. In the present invention, it has been examined to horizontally install a TPU foaming mold that has never existed before.

本発明では、金型内発泡により、靴用パーツと発泡粒子層との結合強度が高い上に、接着剤を塗るステップを省略でき、短時間で簡便に靴用複合材を得ることができる、靴用複合材の製造方法を提供するとともに、金型、および、靴用複合材を提供することを課題とする。 In the present invention, by foaming in the mold, the bond strength between the shoe part and the foam particle layer is high, the step of applying the adhesive can be omitted, and the shoe composite material can be easily obtained in a short time. It is an object of the present invention to provide a method for manufacturing a composite material for shoes, and to provide a mold and a composite material for shoes.

本発明に係る靴用複合材の製造方法は、靴用パーツを金型のキャビティー内に入れ、該キャビティー内で靴用パーツの水平方向の位置を固定させ、
前記キャビティーに発泡粒子を詰め込んで、前記発泡粒子を前記靴用パーツの表面上に積み重ね、
前記キャビティー内の空気を前記キャビティー外に排出させて、前記キャビティー内を真空状態にし、
前記キャビティー内に蒸気を注入し前記キャビティー内を加熱することにより、前記発泡粒子を溶融発泡させ、前記発泡粒子を互いに粘着させるとともに、前記発泡粒子を前記靴用パーツに粘着させ、
前記キャビティー内に冷却液を注入して、前記キャビティー内を冷却し、
前記発泡粒子が発泡して形成された発泡粒子層の表面に、前記靴用パーツが結合して、前記発泡粒子層と前記靴用パーツとが一体化した靴用複合材を得る、靴用複合材の製造方法である。In the method for manufacturing a shoe composite material according to the present invention, a shoe part is placed in a cavity of a mold, and the horizontal position of the shoe part is fixed in the cavity.
The cavity is packed with foam particles, and the foam particles are stacked on the surface of the shoe part.
The air inside the cavity is discharged to the outside of the cavity to create a vacuum inside the cavity.
By injecting steam into the cavity and heating the inside of the cavity, the foamed particles are melt-foamed, the foamed particles are adhered to each other, and the foamed particles are adhered to the shoe parts.
A coolant is injected into the cavity to cool the inside of the cavity.
A shoe composite in which the shoe parts are bonded to the surface of the foam particle layer formed by foaming the foam particles to obtain a shoe composite material in which the foam particle layer and the shoe parts are integrated. It is a method of manufacturing materials.

また、本発明に係る金型は、上型と下型とを有する金型であって、
前記上型と前記下型とを重ね合せることで、前記上型と前記下型との間にキャビティーが形成されるように構成され、
前記キャビティーの底面には、靴用パーツの水平方向の位置を固定する固定位置を備え、
該固定位置で前記靴用パーツの水平方向の位置を固定し、前記キャビティー内に発泡粒子を充填させた後に、該発泡粒子を発泡させることによって、前記発泡粒子が発泡して形成された発泡粒子層の一方の表面に、前記靴用パーツが結合して、前記発泡粒子層と前記靴用パーツとが一体化した靴用複合材を作製する、金型である。Further, the mold according to the present invention is a mold having an upper mold and a lower mold.
By superimposing the upper mold and the lower mold, a cavity is formed between the upper mold and the lower mold.
The bottom surface of the cavity is provided with a fixed position for fixing the horizontal position of the shoe part.
Foaming formed by foaming the foamed particles by fixing the horizontal position of the shoe part at the fixed position, filling the cavity with the foamed particles, and then foaming the foamed particles. It is a mold for producing a composite material for shoes in which the foamed particle layer and the shoe parts are integrated by binding the shoe parts to one surface of the particle layer.

さらに、本発明に係る靴用複合材は、不均一な粒子径の複数個の発泡粒子が互いに積み重なることによって形成された発泡粒子層と、
該発泡粒子層の一の表面の前端、後端、又は、前端と後端との中間位置に配された１又は２以上の靴用パーツとを備えており、
金型内で前記発泡粒子が発泡して前記発泡粒子層が前記靴用パーツに粘着した靴用複合材である。Further, the composite material for shoes according to the present invention has a foamed particle layer formed by stacking a plurality of foamed particles having non-uniform particle diameters on each other.
It comprises one or more shoe parts arranged at the front end, the rear end, or the intermediate position between the front end and the rear end of one surface of the foamed particle layer.
It is a shoe composite material in which the foamed particles are foamed in a mold and the foamed particle layer is adhered to the shoe parts.

本実施形態に係る靴用複合材の製造方法のフロー図。The flow chart of the manufacturing method of the composite material for shoes which concerns on this embodiment. 靴用パーツを金型内に入れる模式図。Schematic diagram of putting shoe parts in the mold. 金型内に発泡粒子を詰め込む模式図。Schematic diagram of packing foam particles in a mold. 金型内に発泡粒子が詰め込まれた状態を示す模式図。The schematic diagram which shows the state which the foamed particles are packed in a mold. 金型内を真空にする模式図。Schematic diagram that evacuates the inside of the mold. 金型内を蒸気で加熱する模式図。Schematic diagram of heating the inside of the mold with steam. 完成品の断面模式図。Schematic diagram of the cross section of the finished product. 他実施形態に係る靴用複合材の製造方法のフロー図。The flow chart of the manufacturing method of the composite material for shoes which concerns on other embodiment. 他実施形態において、キャビティーを形成させつつ、上型と下型との距離を１～２ｍｍとした模式図。In another embodiment, a schematic diagram in which the distance between the upper mold and the lower mold is 1 to 2 mm while forming a cavity. 他実施形態において、２つの靴用パーツを積み重ねた模式図。In another embodiment, a schematic diagram in which two shoe parts are stacked. 他実施形態に係る靴用複合材であって、ゲル粒子と発泡粒子とが混合された発泡粒子層を備える靴用複合材の模式図。The schematic diagram of the composite material for shoes which concerns on another embodiment and includes the foamed particle layer which mixed gel particles and foamed particles. 混合機の斜視図。Perspective view of the mixer. 混合機の側面図。Side view of the mixer. 混合機の正面図。Front view of the mixer. 混合機の正面の断面図。Sectional view of the front of the mixer. 混合機の正面の断面図（複数種の粒子を混合槽に供給している状態を示す図。）。Cross-sectional view of the front of the mixer (a diagram showing a state in which a plurality of types of particles are supplied to the mixing tank). 混合機の正面の断面図（複数種の粒子を混合しつつ、混合状態の複数種の粒子を混合槽外に排出している状態を示す図。）。Cross-sectional view of the front of the mixer (a diagram showing a state in which a plurality of types of particles in a mixed state are discharged to the outside of the mixing tank while mixing a plurality of types of particles).

以下、添付図面を参照しつつ、本発明の一実施形態について説明する。 Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

図１には、本実施形態に係る靴用複合材の製造方法のフロー図を示す。本実施形態に係る靴用複合材の製造方法では、靴用パーツを金型内に入れ、金型内に発泡粒子を詰め込み、金型内を真空にし、金型内を蒸気で加熱し、金型内を冷却してから、靴用複合材を取り出す。 FIG. 1 shows a flow chart of a method for manufacturing a composite material for shoes according to the present embodiment. In the method for manufacturing a composite material for shoes according to the present embodiment, shoe parts are placed in a mold, foam particles are packed in the mold, the inside of the mold is evacuated, the inside of the mold is heated by steam, and the mold is used. After cooling the inside of the mold, remove the shoe composite.

図２～７に、本実施形態に係る製造方法を詳しく示す。靴用パーツ１を金型２のキャビティー２１内に入れ、該キャビティー２１内で靴用パーツ１の水平方向の位置を固定位置２２で固定する。靴用パーツ１は単一材料で形成され、該単一材料をゴムとすることができる。固定位置２２は、キャビティー２１内に設けられた凹入パターンであり、キャビティー２１の前端、後端、又は中間位置に設けられ、２か所以上設けられてもよい。前記金型２のキャビティー２１をアウトソールの形成に用いる場合には、金型２は、キャビティー２１を１つのみ備えてもよく、２以上備えてもよい。 FIGS. 2 to 7 show in detail the manufacturing method according to this embodiment. The shoe part 1 is placed in the cavity 21 of the mold 2, and the horizontal position of the shoe part 1 is fixed at the fixed position 22 in the cavity 21. The shoe part 1 is made of a single material, and the single material can be rubber. The fixed position 22 is a recessed pattern provided in the cavity 21, and may be provided at the front end, the rear end, or the intermediate position of the cavity 21 and may be provided at two or more places. When the cavity 21 of the mold 2 is used for forming the outsole, the mold 2 may be provided with only one cavity 21 or two or more cavities 21.

図３、４に示すように、金型２のキャビティー２１内に発泡粒子３を詰め込んで、発泡粒子３の一部を靴用パーツ１の表面上に積み重ねる。前記発泡粒子３は、ＥＰＯＰ（非架橋ＴＰＵ発泡粒子）である。粒子径が均一であり単一種類の発泡粒子３を金型２のキャビティー２１内に充填する例を挙げて、本実施形態を説明する。 As shown in FIGS. 3 and 4, the foamed particles 3 are packed in the cavity 21 of the mold 2, and a part of the foamed particles 3 is stacked on the surface of the shoe part 1. The foamed particles 3 are EPOP (non-crosslinked TPU foamed particles). The present embodiment will be described with reference to an example in which a single type of foamed particles 3 having a uniform particle diameter is filled in the cavity 21 of the mold 2.

図５に示すように、キャビティー２１内の空気をキャビティー２１外に排出させて、キャビティー２１内を真空状態にする。キャビティー２１内に残っている空気をキャビティー２１外に排出することにより、キャビティー２１は、靴用パーツ１及び発泡粒子３が存在する部分以外の部分が真空状態になる。 As shown in FIG. 5, the air inside the cavity 21 is discharged to the outside of the cavity 21 to create a vacuum state inside the cavity 21. By discharging the air remaining in the cavity 21 to the outside of the cavity 21, the cavity 21 is in a vacuum state except for the portion where the shoe part 1 and the foam particles 3 are present.

図６に示すように、キャビティー２１内に蒸気を注入しキャビティー２１内を加熱することにより、発泡粒子３を溶融発泡させ、発泡粒子３を互いに粘着させるとともに、発泡粒子３を靴用パーツ１に粘着させる。蒸気は、水蒸気であり、また、水蒸気の温度は１００℃以上である。 As shown in FIG. 6, by injecting steam into the cavity 21 and heating the inside of the cavity 21, the foamed particles 3 are melt-foamed, the foamed particles 3 adhere to each other, and the foamed particles 3 are used as shoe parts. Adhere to 1. The steam is steam, and the temperature of the steam is 100 ° C. or higher.

キャビティー２１内に冷却液を注入して、キャビティー２１内を冷却する。金型２の冷却後に、金型２内に水を注入して金型２の温度を２５℃～３５℃に保つ。 A cooling liquid is injected into the cavity 21 to cool the inside of the cavity 21. After cooling the mold 2, water is injected into the mold 2 to keep the temperature of the mold 2 at 25 ° C to 35 ° C.

図７に示すように、前記発泡粒子３が発泡して形成された発泡粒子層３０の表面に、前記靴用パーツ１が結合して、前記発泡粒子層と前記靴用パーツ１とが一体化した靴用複合材を得る。即ち、加熱発泡後の複数の発泡粒子３が、一層の発泡粒子層３０を構成し、該発泡粒子層３０の表面に靴用パーツ１が結合している。また、本実施形態及び図面では、アウトソール及び滑り止め靴底を組み合わせた例を示す。 As shown in FIG. 7, the shoe part 1 is bonded to the surface of the foam particle layer 30 formed by foaming the foam particles 3, and the foam particle layer and the shoe part 1 are integrated. Obtain the composite material for shoes. That is, the plurality of foamed particles 3 after heat foaming constitute one layer of the foamed particle layer 30, and the shoe part 1 is bonded to the surface of the foamed particle layer 30. Further, in the present embodiment and the drawings, an example in which an outsole and a non-slip sole are combined is shown.

上述したように、金型内発泡により、靴用パーツ１と発泡粒子層３０とが一体化して靴用複合材を得ることができる。靴用パーツ１と発泡粒子層３０との結合強度が高い上に、接着剤を塗るステップを省略でき、短時間で簡便に靴用複合材を得ることができるから、本発明の目的を達成できることがわかる。 As described above, by foaming in the mold, the shoe part 1 and the foam particle layer 30 can be integrated to obtain a shoe composite material. The object of the present invention can be achieved because the bond strength between the shoe part 1 and the foam particle layer 30 is high, the step of applying the adhesive can be omitted, and the shoe composite material can be easily obtained in a short time. I understand.

図８には、他実施形態に係る靴用複合材の製造方法のフロー図を示す。
前記金型として、水平割りの金型を用いる。金型は下型と上型とを有する。
図９には、本実施形態の金型のキャビティー内に発泡粒子を詰め込む前に、下型と、上型とでキャビティーを形成させつつ、下型と、上型との距離を１～２ｍｍとした状態を示す。金型２を水平に配置し、下型と、上型とでキャビティー２１を形成させつつ、下型と、上型との距離を１～２ｍｍとした状態で、キャビティー２１内に発泡粒子を詰め込む。そして、前記距離を縮め前記発泡粒子３を圧縮させた状態で、前記キャビティー２１内を真空状態にする。下型と、上型とでキャビティー２１を形成させつつ、下型と、上型との距離を１～２ｍｍとした状態で、キャビティー２１内に発泡粒子を詰め込むことにより、キャビティー２１全体の空間が大きい状態で発泡粒子３をキャビティー２１内に詰め込むことができるので、キャビティー２１内に発泡粒子３を多く詰め込むことができる。また、前記距離を縮め前記発泡粒子３を圧縮させた状態で、前記キャビティー２１内を真空状態にすることにより、発泡粒子３をきちんと整列させた状態で前記キャビティー２１内を真空状態にすることができる。FIG. 8 shows a flow chart of a method for manufacturing a composite material for shoes according to another embodiment.
As the mold, a horizontally split mold is used. The mold has a lower mold and an upper mold.
In FIG. 9, before the foamed particles are packed in the cavity of the mold of the present embodiment, the distance between the lower mold and the upper mold is set to 1 to 1 while forming the cavity between the lower mold and the upper mold. The state of 2 mm is shown. The mold 2 is arranged horizontally, and the cavity 21 is formed by the lower mold and the upper mold, and the distance between the lower mold and the upper mold is 1 to 2 mm, and the foamed particles are formed in the cavity 21. Pack. Then, in a state where the distance is shortened and the foamed particles 3 are compressed, the inside of the cavity 21 is put into a vacuum state. The entire cavity 21 is formed by filling the cavity 21 with foamed particles while forming the cavity 21 between the lower mold and the upper mold and keeping the distance between the lower mold and the upper mold 1 to 2 mm. Since the foamed particles 3 can be packed in the cavity 21 in a state where the space is large, a large amount of the foamed particles 3 can be packed in the cavity 21. Further, by reducing the distance and compressing the foamed particles 3, the inside of the cavity 21 is put into a vacuum state, so that the inside of the cavity 21 is put into a vacuum state with the foamed particles 3 properly aligned. be able to.

図１０には、他の実施形態を示す。図１０の靴用パーツ１と、靴用パーツ１０とは、機能、形状、用途が異なる。また、２つの靴用パーツ１、１０を直接積み重ね、又は、水平方向に間隔を空けて配置する。また、２つの靴用パーツ１、１０を直接積み重ねる場合には、一方の靴用パーツ１の水平方向の位置をキャビティー２１内で固定させる。前記靴用パーツは、ＲＢ、ＥＶＡ、ＴＰＵ、及び、発泡ゴムの中から選ばれた異なる材料で形成されている。 FIG. 10 shows another embodiment. The shoe part 1 of FIG. 10 and the shoe part 10 have different functions, shapes, and uses. Further, the two shoe parts 1 and 10 are directly stacked or arranged at a horizontal interval. When the two shoe parts 1 and 10 are directly stacked, the horizontal position of one shoe part 1 is fixed in the cavity 21. The shoe parts are made of a different material selected from RB, EVA, TPU, and foam rubber.

図１１には、本実施形態の金型２のキャビティー２１内に発泡粒子３を詰め込むステップにおいて、単一種類の発泡粒子３（ＥＰＯＰ、非架橋ＴＰＵ発泡粒子）を用い、ゲル粒子３１と発泡粒子３とを混ぜてキャビティー２１内に入れ、且つ、ゲル粒子３１の数量は発泡粒子３の数量よりも少なく、ゲル粒子３１はポリウレタンゲル粒子である、靴用複合材を示す。 In FIG. 11, in the step of packing the foamed particles 3 into the cavity 21 of the mold 2 of the present embodiment, a single type of foamed particles 3 (EPOP, non-crosslinked TPU foamed particles) is used, and the gel particles 31 and foamed particles 31 are used. A composite material for shoes is shown in which the particles 3 are mixed and placed in the cavity 21, and the number of gel particles 31 is smaller than the number of foamed particles 3, and the gel particles 31 are polyurethane gel particles.

本実施形態の金型は、上型２４と下型２３とを備え、上型２４と下型２３とを重ね合せることで上型２４と下型２３との間にキャビティー２１が形成されるように構成され、キャビティー２１の底面には、靴用パーツ１の水平方向の位置を固定する固定位置２２を備え、固定位置２２で靴用パーツ１の水平方向の位置を固定し、キャビティー２１内に発泡粒子３を充填させた後に、発泡粒子３を発泡させることによって、発泡粒子３が発泡して形成された発泡粒子層３０の一方の表面に、靴用パーツ１が結合して、発泡粒子層３０と靴用パーツ１とが一体化した靴用複合材を作製する。上型２４には、発泡粒子を供給するためのフィーダー、蒸気通路、冷却水通路、及び、前記真空状態にするために空気を排出する排出通路が含まれ、下型２３には、蒸気通路、冷却水通路、及び、前記真空状態にするために空気を排出する排出通路が含まれる。 The mold of the present embodiment includes an upper mold 24 and a lower mold 23, and a cavity 21 is formed between the upper mold 24 and the lower mold 23 by superimposing the upper mold 24 and the lower mold 23. The bottom surface of the cavity 21 is provided with a fixed position 22 for fixing the horizontal position of the shoe part 1, and the fixed position 22 fixes the horizontal position of the shoe part 1 to fix the cavity. After the foamed particles 3 are filled in 21, the foamed particles 3 are foamed, so that the shoe parts 1 are bonded to one surface of the foamed particle layer 30 formed by foaming the foamed particles 3. A composite material for shoes in which the foamed particle layer 30 and the parts 1 for shoes are integrated is produced. The upper mold 24 includes a feeder for supplying foamed particles, a steam passage, a cooling water passage, and a discharge passage for discharging air to create the vacuum state, and the lower mold 23 includes a steam passage. It includes a cooling water passage and a discharge passage for discharging air to create the vacuum state.

上述した製造方法により、複数個の発泡粒子３が不均一な粒子径で互いに積み重なることによって発泡粒子層３０が形成され、かつ、発泡粒子層３０の一の表面の前端、後端、又は、前端と後端との中間位置に靴用パーツ１が配される。金型内で発泡粒子３が発泡して発泡粒子層３０が靴用パーツ１に粘着した靴用複合材を作製することができる。 By the above-mentioned manufacturing method, a plurality of foamed particles 3 are stacked on each other with a non-uniform particle size to form a foamed particle layer 30, and the front end, the rear end, or the front end of one surface of the foamed particle layer 30 is formed. The shoe part 1 is arranged at an intermediate position between the particle and the rear end. It is possible to produce a shoe composite material in which the foamed particles 3 are foamed in the mold and the foamed particle layer 30 is adhered to the shoe part 1.

なお、本発明に係る靴用複合材の製造方法、金型、および、靴用複合材は、上記実施形態に限定されるものではない。また、本発明に係る靴用複合材の製造方法、金型、および、靴用複合材は、上記した作用効果によって限定されるものでもない。さらに、本発明に係る靴用複合材の製造方法、金型、および、靴用複合材は、本発明の要旨を逸脱しない範囲で種々の変更が可能である。 The method for manufacturing the composite material for shoes, the mold, and the composite material for shoes according to the present invention are not limited to the above-described embodiment. Further, the method for manufacturing the composite material for shoes, the mold, and the composite material for shoes according to the present invention are not limited by the above-mentioned effects. Further, the method for manufacturing the composite material for shoes, the mold, and the composite material for shoes according to the present invention can be variously changed without departing from the gist of the present invention.

例えば、靴用複合材は、前記発泡粒子がＴＰＵ（熱可塑性ポリウレタン）で形成され、前記靴用パーツがゴムで形成されている場合、前記靴用パーツは、該ゴムで形成されたゴム層と、該ゴム層に積層され且つゴム及びＴＰＵで形成された表面層とを備え、前記表面層と前記発泡粒子層とは、結合されており、前記ゴム層のゴム濃度は、表面層のゴム濃度よりも高いことが好ましい。
靴用複合材は、斯かる構成を有することにより、靴用パーツと発泡粒子層との結合力が高くなるという利点を有する。
前記表面層は、ゴム及びＴＰＵに加えて、相溶化剤を含むことが好ましい。
前記表面層は、ゴムを４０～８５質量％、ＴＰＵを１０～４０質量％、前記相溶化剤を５～２０質量％含有することが好ましい。For example, in a composite material for shoes, when the foam particles are formed of TPU (thermoplastic polyurethane) and the parts for shoes are made of rubber, the parts for shoes have a rubber layer formed of the rubber. A surface layer laminated on the rubber layer and formed of rubber and TPU is provided, and the surface layer and the foamed particle layer are bonded to each other, and the rubber concentration of the rubber layer is the rubber concentration of the surface layer. It is preferably higher than.
By having such a structure, the shoe composite material has an advantage that the bonding force between the shoe parts and the foamed particle layer is increased.
The surface layer preferably contains a compatibilizer in addition to the rubber and TPU.
The surface layer preferably contains 40 to 85% by mass of rubber, 10 to 40% by mass of TPU, and 5 to 20% by mass of the compatibilizer.

靴用複合材の製造方法で、発泡粒子を含む複数種の粒子（例えば、ゲル粒子及び発泡粒子を含む複数種の粒子）をキャビティー内に供給する場合、複数種の粒子を混合状態でキャビティー内に供給することが好ましい。具体的には、複数種の粒子を混合しつつ、この混合により混合状態となった複数種の粒子をキャビティー内に供給することが好ましい。より具体的には、複数種の粒子を混合機で混合しつつ、この混合により混合状態となった複数種の粒子を混合機からキャビティー内に供給することが好ましい。
図１２～１５に示すように、前記混合機１００は、横型円筒状の混合槽１０１と、混合槽１０１内に複数種の粒子を供給する供給部１０２と、混合槽１０１内の複数種の粒子を撹拌する撹拌装置１０３と、該撹拌により混合状態となった複数種の粒子を混合槽１０１外に排出する排出部１０４とを備える。
また、前記混合機１００は、混合状態の複数種の粒子を排出部１０４からキャビティーに供給するように構成されている。
前記撹拌装置１０３は、前記混合槽１０１の仮想中心軸に沿って配され且つ軸周りに回転するシャフト１３１と、該シャフト１３１に装着され、且つ、該シャフト１３１から混合槽１０１の円筒状の壁面近傍まで延びる板状の回転翼１３２とを備える。
前記混合機１００は、図１６、１７に示すように、供給部１０２によって複数種の粒子１０５を混合槽１０１内に供給し、該供給により混合槽１０１の底部に溜まった複数種の粒子１０５を、回転翼１３２が回転することで、混合槽１０１の上部まで持ち上げるように構成されている。
すなわち、靴用複合材の製造方法では、複数種の粒子が混合槽１０１の底部に溜まった状態で回転翼１３２を回転させると、混合槽１０１の底部に溜まった複数種の粒子を回転翼１３２によって持ち上げ、そして、回転翼１３２の先端がシャフト１３１よりも上方の位置まで上がると、複数種の粒子がシャフト方向に向かって転がり、複数種の粒子が混合される。
また、靴用複合材の製造方法では、供給部１０２によって複数種の粒子が混合槽１０１内に供給されると、比重や粒径の関係で複数種の粒子の中で比較的下方に溜まりやすい粒子（以下、「下方に溜まりやすい粒子」ともいう。）が存在し、複数種の粒子が偏在してしまう。靴用複合材の製造方法では、下方に溜まりやすい粒子が回転翼１３２によって混合槽１０１の壁面に沿って持ち上がり、回転翼１３２の先端がシャフト１３１よりも上方の位置まで上がると、下方に溜まりやすい粒子は混合槽１０１の壁面側からシャフト方向に向かって他の粒子よりも速い速度で転がり、その結果、複数種の粒子が十分に混合された状態となる。
また、排出部１０４は、前記混合槽１０１の壁面に設けられた排出口１４１と、該排出口１４１から混合状態の複数種の粒子を吸引する吸引部とを有する。
前記排出口１４１は、シャフト１３１よりも上方に設けられている。前記混合槽１０１の壁面の円形状断面において、前記混合槽１０１の壁面の頂点１１１と、前記排出口１４１の中心との間の角度θは、３５°～４５°が好ましい。
言い換えれば、靴用複合材の製造方法では、複数種の粒子をすくい上げて、相対的に下方にあった粒子を相対的に上方にあった粒子よりも上側にすくい上げることで、粒子の上下位置を逆転させて、複数種の粒子を十分に混合させる。そして、十分に混合された状態で複数種の粒子を取り出す。
従って、靴用複合材の製造方法では、十分に混合された状態で複数種の粒子をキャビティー内に供給することができる。In the method of manufacturing a composite material for shoes, when a plurality of kinds of particles including foamed particles (for example, a plurality of kinds of particles including gel particles and foamed particles) are supplied into the cavity, the plurality of kinds of particles are mixed in a cavity. It is preferable to supply the particles in the tee. Specifically, it is preferable to mix a plurality of types of particles and supply the plurality of types of particles in a mixed state by this mixing into the cavity. More specifically, it is preferable to mix a plurality of types of particles with a mixer and supply the plurality of types of particles in a mixed state from the mixer into the cavity.
As shown in FIGS. 12 to 15, the mixer 100 includes a horizontal cylindrical mixing tank 101, a supply unit 102 for supplying a plurality of types of particles into the mixing tank 101, and a plurality of types of particles in the mixing tank 101. It is provided with a stirring device 103 for stirring the particles, and a discharging unit 104 for discharging a plurality of types of particles mixed by the stirring to the outside of the mixing tank 101.
Further, the mixer 100 is configured to supply a plurality of types of particles in a mixed state from the discharge unit 104 to the cavity.
The stirring device 103 includes a shaft 131 arranged along the virtual central axis of the mixing tank 101 and rotating around the axis, and a cylindrical wall surface of the mixing tank 101 mounted on the shaft 131 and from the shaft 131 to the mixing tank 101. It is provided with a plate-shaped rotary blade 132 extending to the vicinity.
As shown in FIGS. 16 and 17, the mixer 100 supplies a plurality of types of particles 105 into the mixing tank 101 by the supply unit 102, and the plurality of types of particles 105 accumulated at the bottom of the mixing tank 101 by the supply. , The rotary blade 132 is configured to be lifted to the upper part of the mixing tank 101 by rotating.
That is, in the method for manufacturing a composite material for shoes, when the rotary blade 132 is rotated with a plurality of types of particles accumulated at the bottom of the mixing tank 101, the plurality of types of particles accumulated at the bottom of the mixing tank 101 are collected at the bottom of the mixing tank 101. And when the tip of the rotor 132 rises above the shaft 131, the plurality of particles roll toward the shaft and the plurality of particles are mixed.
Further, in the method for manufacturing a composite material for shoes, when a plurality of types of particles are supplied into the mixing tank 101 by the supply unit 102, they tend to accumulate relatively downward among the plurality of types of particles due to the specific gravity and the particle size. Particles (hereinafter, also referred to as "particles that tend to accumulate downward") exist, and a plurality of types of particles are unevenly distributed. In the method for manufacturing a composite material for shoes, particles that tend to collect downward are lifted along the wall surface of the mixing tank 101 by the rotary blade 132, and when the tip of the rotary blade 132 rises to a position above the shaft 131, the particles tend to collect downward. The particles roll from the wall surface side of the mixing tank 101 toward the shaft at a speed higher than that of the other particles, and as a result, a plurality of types of particles are sufficiently mixed.
Further, the discharge unit 104 has a discharge port 141 provided on the wall surface of the mixing tank 101, and a suction unit that sucks a plurality of types of particles in a mixed state from the discharge port 141.
The discharge port 141 is provided above the shaft 131. In the circular cross section of the wall surface of the mixing tank 101, the angle θ between the apex 111 of the wall surface of the mixing tank 101 and the center of the discharge port 141 is preferably 35 ° to 45 °.
In other words, in the method of manufacturing a composite material for shoes, a plurality of types of particles are scooped up, and the particles that were relatively lower are scooped up above the particles that were relatively upward, so that the vertical position of the particles is moved. Invert and mix the particles well. Then, a plurality of kinds of particles are taken out in a sufficiently mixed state.
Therefore, in the method for producing a composite material for shoes, a plurality of types of particles can be supplied into the cavity in a sufficiently mixed state.

１：靴用パーツ、１０：靴用パーツ、２：金型、２１：キャビティー、２２：固定位置、３：発泡粒子、３０：発泡粒子層、３１：ゲル粒子、
１００：混合機、１０１：混合槽、１０２：供給部、１０３：撹拌装置、１０４：排出部、１０５：複数種の粒子、１１１：頂点、１３１：シャフト、１３２：回転翼、１４１：排出口1: Shoe parts, 10: Shoe parts, 2: Mold, 21: Cavity, 22: Fixed position, 3: Foam particles, 30: Foam particle layer, 31: Gel particles,
100: Mixer, 101: Mixing tank, 102: Supply unit, 103: Stirrer, 104: Discharge unit, 105: Multiple types of particles, 111: Vertex, 131: Shaft, 132: Rotor blade, 141: Discharge port

Claims (11)

靴用パーツを金型のキャビティー内に入れ、該キャビティー内で靴用パーツの水平方向の位置を固定させ、
前記キャビティーに発泡粒子を詰め込んで、前記発泡粒子を前記靴用パーツの表面上に積み重ね、
前記キャビティー内の空気を前記キャビティー外に排出させて、前記キャビティー内を真空状態にし、
前記キャビティー内に蒸気を注入し前記キャビティー内を加熱することにより、前記発泡粒子を溶融発泡させ、前記発泡粒子を互いに粘着させるとともに、前記発泡粒子を前記靴用パーツに粘着させ、
前記キャビティー内に冷却液を注入して、前記キャビティー内を冷却し、
前記発泡粒子が発泡して形成された発泡粒子層の表面に、前記靴用パーツが結合して、前記発泡粒子層と前記靴用パーツとが一体化した靴用複合材を得、
前記キャビティー内に発泡粒子を詰め込むステップにおいて、
ゲル粒子と前記発泡粒子とを混合し、
混合された前記ゲル粒子と前記発泡粒子とを前記キャビティー内に入れ、
前記ゲル粒子の数量は発泡粒子の数量よりも少なく、
前記発泡粒子が、非架橋ＴＰＵ発泡粒子であり、
前記ゲル粒子が、ポリウレタンゲル粒子である、
靴用複合材の製造方法。 The shoe part is placed in the cavity of the mold, and the horizontal position of the shoe part is fixed in the cavity.
The cavity is packed with foam particles, and the foam particles are stacked on the surface of the shoe part.
The air inside the cavity is discharged to the outside of the cavity to create a vacuum inside the cavity.
By injecting steam into the cavity and heating the inside of the cavity, the foamed particles are melt-foamed, the foamed particles are adhered to each other, and the foamed particles are adhered to the shoe parts.
A coolant is injected into the cavity to cool the inside of the cavity.
The shoe parts are bonded to the surface of the foam particle layer formed by foaming the foam particles to obtain a shoe composite material in which the foam particle layer and the shoe parts are integrated.
In the step of packing the foamed particles into the cavity,
The gel particles and the foamed particles are mixed and
The mixed gel particles and the foamed particles are placed in the cavity, and the mixture is placed in the cavity.
The number of gel particles is less than the number of foamed particles,
The foamed particles are non-crosslinked TPU foamed particles.
The gel particles are polyurethane gel particles.
A method for manufacturing composite materials for shoes. 前記発泡粒子は、ＴＰＵで形成され、
前記靴用パーツは、ゴムで形成されたゴム層と、該ゴム層に積層され且つゴム及びＴＰＵで形成された表面層とを備え、
前記表面層と前記発泡粒子層とは、結合されており、
前記ゴム層のゴム濃度は、前記表面層のゴム濃度よりも高い、請求項１に記載の靴用複合材の製造方法。 The foamed particles are formed of TPU and
The shoe part comprises a rubber layer made of rubber and a surface layer laminated on the rubber layer and made of rubber and TPU.
The surface layer and the foamed particle layer are bonded to each other.
The method for producing a composite material for shoes according to claim 1, wherein the rubber concentration of the rubber layer is higher than the rubber concentration of the surface layer. 靴用パーツを金型のキャビティー内に入れ、該キャビティー内で靴用パーツの水平方向の位置を固定させ、
前記キャビティーに発泡粒子を詰め込んで、前記発泡粒子を前記靴用パーツの表面上に積み重ね、
前記キャビティー内の空気を前記キャビティー外に排出させて、前記キャビティー内を真空状態にし、
前記キャビティー内に蒸気を注入し前記キャビティー内を加熱することにより、前記発泡粒子を溶融発泡させ、前記発泡粒子を互いに粘着させるとともに、前記発泡粒子を前記靴用パーツに粘着させ、
前記キャビティー内に冷却液を注入して、前記キャビティー内を冷却し、
前記発泡粒子が発泡して形成された発泡粒子層の表面に、前記靴用パーツが結合して、前記発泡粒子層と前記靴用パーツとが一体化した靴用複合材を得、
前記発泡粒子は、ＴＰＵで形成され、
前記靴用パーツは、ゴムで形成されたゴム層と、該ゴム層に積層され且つゴム及びＴＰＵで形成された表面層とを備え、
前記表面層と前記発泡粒子層とは、結合されており、
前記ゴム層のゴム濃度は、前記表面層のゴム濃度よりも高い、
靴用複合材の製造方法。 The shoe part is placed in the cavity of the mold, and the horizontal position of the shoe part is fixed in the cavity.
The cavity is packed with foam particles, and the foam particles are stacked on the surface of the shoe part.
The air inside the cavity is discharged to the outside of the cavity to create a vacuum inside the cavity.
By injecting steam into the cavity and heating the inside of the cavity, the foamed particles are melt-foamed, the foamed particles are adhered to each other, and the foamed particles are adhered to the shoe parts.
A coolant is injected into the cavity to cool the inside of the cavity.
The shoe parts are bonded to the surface of the foam particle layer formed by foaming the foam particles to obtain a shoe composite material in which the foam particle layer and the shoe parts are integrated.
The foamed particles are formed of TPU and
The shoe part comprises a rubber layer made of rubber and a surface layer laminated on the rubber layer and made of rubber and TPU.
The surface layer and the foamed particle layer are bonded to each other.
The rubber concentration of the rubber layer is higher than the rubber concentration of the surface layer.
A method for manufacturing composite materials for shoes. 前記キャビティー内で前記靴用パーツの水平方向の位置を固定させる固定位置は、前記キャビティー内に設けられた凹入パターンである、請求項１～３の何れか１項に記載の靴用複合材の製造方法。 The shoe product according to any one of claims 1 to 3, wherein the fixing position for fixing the horizontal position of the shoe part in the cavity is a recessed pattern provided in the cavity. Method of manufacturing composite material. 前記靴用パーツが単一材料で形成され、該単一材料がゴムである、請求項１に記載の靴用複合材の製造方法。 The method for manufacturing a composite material for shoes according to claim 1 , wherein the parts for shoes are formed of a single material, and the single material is rubber. 前記靴用パーツとして、材料が異なる靴用パーツを２つ用い、且つ、これらの靴用パーツを直接積み重ねることによって、一方の靴用パーツの水平方向の位置を前記キャビティー内で固定させ、前記靴用パーツは、ＲＢ、ＥＶＡ、ＴＰＵ、及び、発泡ゴムの中から選ばれた異なる材料で形成されている、請求項５に記載の靴用複合材の製造方法。 As the shoe parts, two shoe parts made of different materials are used, and these shoe parts are directly stacked to fix the horizontal position of one shoe part in the cavity. The method for manufacturing a shoe composite material according to claim 5 , wherein the shoe part is made of a different material selected from RB, EVA, TPU, and foam rubber. 前記蒸気は、１００℃以上の水蒸気であり、
前記金型の冷却後に、該金型内に水を注入して該金型の温度を３５℃～２５℃に保つ、請求項１～６の何れか１項に記載の靴用複合材の製造方法。 The steam is steam of 100 ° C. or higher, and is
The production of the composite material for shoes according to any one of claims 1 to 6 , wherein after cooling the mold, water is injected into the mold to keep the temperature of the mold at 35 ° C to 25 ° C. Method. 前記金型として、水平割りの金型を用い、該金型が下型と上型とを有し、
前記下型と、前記上型とで前記キャビティーを形成させつつ、前記下型と、前記上型との距離を１～２ｍｍとした状態で、前記キャビティー内に前記発泡粒子を詰め込み、
前記距離を縮め前記発泡粒子を圧縮させた状態で、前記キャビティー内を真空状態にする、請求項１～７の何れか１項に記載の靴用複合材の製造方法。 As the mold, a horizontally split mold is used, and the mold has a lower mold and an upper mold.
While forming the cavity with the lower mold and the upper mold, the foamed particles are packed in the cavity with the distance between the lower mold and the upper mold being 1 to 2 mm.
The method for producing a composite material for shoes according to any one of claims 1 to 7 , wherein the inside of the cavity is evacuated in a state where the distance is shortened and the foamed particles are compressed. 前記金型として、下型と上型とを有する金型を用い、
前記キャビティー内で靴用パーツの水平方向の位置を固定させる固定位置は、前記下型の前記キャビティーの底面に配され、且つ、前記キャビティーの前端、後端又は中間位置の何れか１箇所又は２箇所以上に配される、請求項１～８の何れか１項に記載の靴用複合材の製造方法。 As the mold, a mold having a lower mold and an upper mold is used.
The fixing position for fixing the horizontal position of the shoe part in the cavity is arranged on the bottom surface of the cavity of the lower mold, and is any one of the front end, the rear end, and the intermediate position of the cavity. The method for manufacturing a composite material for shoes according to any one of claims 1 to 8 , which is arranged at one place or at two or more places. 前記キャビティー内に発泡粒子を詰め込むステップでは、前記発泡粒子を含む複数種の粒子を混合状態で前記キャビティー内に供給する、請求項１～９の何れか１項に記載の靴用複合材の製造方法。 The composite material for shoes according to any one of claims 1 to 9 , wherein in the step of packing the foamed particles into the cavity, a plurality of kinds of particles including the foamed particles are supplied into the cavity in a mixed state. Manufacturing method. 前記キャビティー内に発泡粒子を詰め込むステップでは、前記複数種の粒子を混合しつつ、この混合により混合状態となった前記複数種の粒子を前記キャビティー内に供給する、請求項１０に記載の靴用複合材の製造方法。 The tenth aspect of the present invention, wherein in the step of packing the foamed particles into the cavity, the plurality of types of particles are mixed and the plurality of types of particles in a mixed state are supplied into the cavity. A method for manufacturing composite materials for shoes.
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JP2013220354A (en) 2012-04-13 2013-10-28 Adidas Ag Sole for sports shoe
JP2014158708A (en) 2013-02-13 2014-09-04 Adidas Ag Methods for manufacturing cushioning elements for sports apparel
JP2016141153A (en) 2015-02-05 2016-08-08 アディダス アーゲー Method for manufacture of plastic component, plastic component, and shoe
JP2017061143A (en) 2015-09-11 2017-03-30 サンコ・インク・カンパニー・リミテッドＳｕｎｋｏ Ｉｎｋ Ｃｏ．， Ｌｔｄ． Microwave molded article and manufacturing method therefor
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