JP2750670B2 - How to make cup insoles for shoes - Google Patents
How to make cup insoles for shoesInfo
- Publication number
- JP2750670B2 JP2750670B2 JP7120896A JP12089695A JP2750670B2 JP 2750670 B2 JP2750670 B2 JP 2750670B2 JP 7120896 A JP7120896 A JP 7120896A JP 12089695 A JP12089695 A JP 12089695A JP 2750670 B2 JP2750670 B2 JP 2750670B2
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- synthetic resin
- thermoplastic
- rubber
- producing
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
- 239000000835 fiber Substances 0.000 claims description 17
- 229920003002 synthetic resin Polymers 0.000 claims description 14
- 239000000057 synthetic resin Substances 0.000 claims description 14
- 239000004952 Polyamide Substances 0.000 claims description 10
- 229920002647 polyamide Polymers 0.000 claims description 10
- 229920001169 thermoplastic Polymers 0.000 claims description 10
- 239000004416 thermosoftening plastic Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 7
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 7
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000005060 rubber Substances 0.000 claims description 4
- 238000010008 shearing Methods 0.000 claims description 3
- 229920001195 polyisoprene Polymers 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229920001400 block copolymer Polymers 0.000 claims 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical group C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims 1
- 229920000098 polyolefin Polymers 0.000 claims 1
- 239000006260 foam Substances 0.000 description 4
- 230000035699 permeability Effects 0.000 description 3
- 239000004831 Hot glue Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 239000002781 deodorant agent Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920006124 polyolefin elastomer Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Description
【０００１】本発明は、蒸れが生ぜず、薄くならず、弾
性も低下しない靴用カップインソールの製法に関する。The present invention relates to a method for producing a cup insole for shoes, which does not produce stuffiness, does not become thin, and does not lose elasticity.
【０００２】[0002]
【従来の技術】靴用カップインソールは、種々の材質や
構造のものが用いられている。最も代表的なものは、ポ
リエステルよりなる不織布、又はエチレン・酢酸ビニル
共重合体，ポリエチレンよりなる熱可塑性合成樹脂発泡
体等にポリエステル繊維，再生繊維等の織布を重ね合わ
せ、加熱し、軟化させた後、モールドキャビティ内に入
れ、押圧し、冷却後、所望形状に成形したものが用いら
れる。2. Description of the Related Art Various types of materials and structures are used for cup insoles for shoes. The most typical one is made by laminating a woven fabric such as polyester fiber and recycled fiber on a non-woven fabric made of polyester or a thermoplastic synthetic resin foam made of ethylene-vinyl acetate copolymer or polyethylene, heating and softening. After that, it is put into a mold cavity, pressed, cooled, and then molded into a desired shape.
【０００３】[0003]
【発明が解決しようとする課題】前記従来のカンプイン
ソールにおいて、基材が不織布であるものは、使用中に
体重により大きな歪みを生じ、薄くなり、柔らかさと弾
性を失い、履き心地を損ね、特に足踵部を傷めることが
多かった。又、基材が熱可塑性合成樹脂発泡体であるも
のは、その殆どが単独発泡体であるため通気性，透湿性
に乏しく、使用中蒸れ易く、更にエチレン・酢酸ビニル
共重合体の場合には、体温による靴内の温度上昇により
軟化し易く、厚みが半減し、強度が低下し、着脱時に折
れたり、靴により抜け出したりする欠点があった。本発
明は、前記従来使用されていたカップインソールの多く
の欠点を一挙に解決することを目的とするものである。In the above-mentioned conventional cam insole, when the base material is a non-woven fabric, a large strain is caused by the weight during use, it becomes thin, loses softness and elasticity, and impairs comfort. He often hurt his heels. In addition, when the base material is a thermoplastic synthetic resin foam, since most of the foam is a single foam, it is poor in air permeability and moisture permeability, easily stuffy during use, and in the case of an ethylene-vinyl acetate copolymer, However, there is a disadvantage that the temperature in the shoe is easily softened due to a rise in temperature due to body temperature, the thickness is reduced by half, the strength is reduced, and the shoe is broken at the time of attachment / detachment or comes out of the shoe. An object of the present invention is to solve many of the drawbacks of the conventionally used cup insoles at once.
【０００４】[0004]
【課題を解決するための手段】本発明は、下記（ａ）〜
（ｄ）の工程よりなる靴用カップインソールの製法を特
徴とする。 （ａ）熱可塑性合成樹脂又は熱可塑性ゴム１００重量部
に、ポリアミド繊維７０〜１３０重量部を剪断力をかけ
ながら混練する。 （ｂ）(a) 工程で得た混練物を圧延し、シート状にす
る。 （ｃ）(b) 工程で得たシートを熱空気中に入れ、膨張さ
せる。 （ｄ）(c) 工程で得た膨張シートの上面に、連続気泡性
合成樹脂シートと布帛とを順次接着剤を介して重ね、型
に入れ、加熱により前記樹脂シートを軟化状態とし、然
る後、型に入れ押圧し、冷却する。The present invention provides the following (a) to (d):
The method is characterized by a method for producing a shoe cup insole comprising the step (d). (A) 70 to 130 parts by weight of a polyamide fiber is kneaded with 100 parts by weight of a thermoplastic synthetic resin or a thermoplastic rubber while applying a shearing force. (B) The kneaded material obtained in the step (a) is rolled into a sheet. (C) The sheet obtained in the step (b) is put into hot air and expanded. (D) The open-cell synthetic resin sheet and the cloth are successively stacked on the upper surface of the expanded sheet obtained in the step (c) via an adhesive, placed in a mold, and the resin sheet is softened by heating. Then, it is put into a mold, pressed, and cooled.
【０００５】本発明を実施するに当たって、赤外分析法
で測定した酢酸ビニル含有量が２５〜３３％のエチレン
酢酸ビニル共重合体が用いられ、酢酸ビニル含有量が２
５％未満であれば、ポリアミド繊維との混合ができなく
なり、３３％を超えれば出来上がったカップインソール
の弾性が失われる。熱可塑性ゴムとしては、型中でのカ
ップインソールの形状に成形し易く、又、弾性もあるス
チレン・ブタジエン共重合ゴム，ポリオレフインゴム，
又は、ハイトランスー1.4 −ポリイソプレン用が用いら
れる。In carrying out the present invention, an ethylene-vinyl acetate copolymer having a vinyl acetate content of 25 to 33% as measured by infrared analysis is used, and the vinyl acetate content is 2%.
If it is less than 5%, it cannot be mixed with the polyamide fiber, and if it exceeds 33%, the elasticity of the resulting cup insole is lost. As the thermoplastic rubber, styrene-butadiene copolymer rubber, polyolefin rubber, and the like, which are easily formed into a cup insole shape in a mold and have elasticity, can be used.
Alternatively, a high trans-1.4-polyisoprene type is used.
【０００６】前記熱可塑性合成樹脂と熱可塑性ゴムはブ
レンドして用いられ、型中での成形性を良くするために
前者を主体として用いられる。前記ブレンド体には、そ
の１００重量部に対してポリアミド繊維が７０〜１００
重量部混合される。ポリアミド繊維は、ブレンド体との
混練，加熱等の工程において、混練分散し易く、伸張，
捲縮作用を受け易く、全体を嵩高とし易いためであり、
しかしながら、その量が７０重量部未満であれば、十分
な嵩高とはなり得ず、１３０重量部を超えればその結合
体の役目をもするブレンド体が少なすぎて、繊維の固ま
りが出来、分散不能となり、シート状にもなりにくくな
る。接着剤は型中の加熱により粘着性（又は接着性）を
発揮するホットメルト接着剤が用いられる。The thermoplastic synthetic resin and the thermoplastic rubber are used by blending, and the former is mainly used to improve moldability in a mold. In the blend, the polyamide fiber is 70 to 100 parts by weight based on 100 parts by weight.
Parts by weight. Polyamide fibers are easily kneaded and dispersed in processes such as kneading with a blend and heating.
Because it is easy to receive the crimping action and it is easy to make the whole bulky,
However, if the amount is less than 70 parts by weight, sufficient bulk cannot be obtained. If the amount exceeds 130 parts by weight, the amount of the blend that also serves as the binder is too small, so that the fibers are aggregated and dispersed. It becomes impossible, and it becomes difficult to form a sheet. As the adhesive, a hot melt adhesive which exhibits tackiness (or adhesiveness) by heating in a mold is used.
【０００７】[0007]
【作用】熱可塑性合成樹脂又は熱可塑性ゴム１００重量
部にポリアミド繊維を７０〜１３０重量部を剪断力をか
けながら、例えばロール機等で混練すると、ポリアミド
繊維は伸張状態で分散されるが、これをシート状にする
と、更にその伸張状態は促進され、このような状態のと
きに、熱空気により加熱されると、前記合成樹脂又はゴ
ムが熱可塑性であるので、流動状態となり、前記繊維の
テンションがかかった伸張状態が緩和され、逆に捲縮状
態となり、空隙ができると同時に嵩高の状態となり、処
理前に比べ３〜５倍の嵩高となる。このようにして、通
気性とフエルト状の外観と弾性が付与される。When polyamide fiber is kneaded with, for example, a roll machine while applying a shearing force of 70 to 130 parts by weight of polyamide fiber to 100 parts by weight of thermoplastic synthetic resin or thermoplastic rubber, the polyamide fiber is dispersed in an expanded state. In the form of a sheet, the stretched state is further promoted, and in such a state, when heated by hot air, the synthetic resin or rubber is thermoplastic, so that it is in a fluid state, and the tension of the fiber is increased. Is relaxed, conversely crimped, and voids are formed and at the same time become bulky, which is 3 to 5 times larger than before treatment. In this way, breathability, felt-like appearance and elasticity are imparted.
【０００８】このフエルト状のシートはその上面に連続
気泡性合成繊維シート，布帛等と重ねて、型中に入れ、
カップインソールに成形するときの加熱，押圧，冷却等
の工程で、その基体となっている合成樹脂ゴム等が熱可
塑性であるので、型の形状，意匠等が忠実に付与され、
形状，外観の優れたカップインソールが得られる。[0008] The felt-like sheet is placed on an upper surface thereof with an open-cell synthetic fiber sheet, a cloth or the like, and placed in a mold.
In the steps of heating, pressing, cooling, etc., when molding into a cup insole, the synthetic resin rubber, etc., which is its base, is thermoplastic, so that the shape, design, etc. of the mold are given faithfully,
A cup insole with excellent shape and appearance can be obtained.
【０００９】又、前記ポリアミド繊維は、成形後は補強
剤としての役目をすると同時に体重がかかったときのバ
ネの働きも合成樹脂及びゴムと相まって現出しうる。併
せてヘタリ等も防止しうる。更に又、フエルト状シート
の上面に重ねられる連続気泡合成樹脂シートは、通常、
ポリウレタンが用いられ、足裏に対する心地よい弾性を
付与するのに役立つ。最上層にある布帛は吸湿性のよい
天然繊維，再生繊維等が用いられ履き心地の向上のみな
らず、所与の薬剤で処理すれば防臭，抗菌の働きもする
ことができる。In addition, the polyamide fiber functions as a reinforcing agent after molding, and at the same time, the function of a spring when a weight is applied can appear in combination with the synthetic resin and rubber. At the same time, settling and the like can be prevented. Furthermore, the open-cell synthetic resin sheet superimposed on the upper surface of the felt-like sheet is usually
Polyurethane is used to help provide comfortable elasticity to the soles. The fabric in the uppermost layer is made of natural fibers, regenerated fibers and the like having good hygroscopicity, and can not only improve comfort, but also can perform deodorant and antibacterial functions when treated with a given agent.
【００１０】[0010]
【実施例】エチレン酢酸ビニル共重合体（酢酸ビニル含
有量３０％）１００重量部，天然ゴム１０重量部，ポリ
アミド繊維（直径２０デニル，長さ１５mm）１００重量
部，顔料２．０重量部を温度４０℃±のオープンロール
機により３０分間混練し、０．７mmの厚みにシーティン
グした。このシートの上面に４．５mm厚みの連続気泡ポ
リウレタンシートをエチレン酢酸ビニル共重合体製ホッ
トメルト接着剤を介して重ね合わせ、更にその上面に天
然繊維製織物を同接着剤を介して重ねて、１３０〜１６
０℃の熱風循環式のオーブン中に５分間入れ、約３倍に
膨張させた。この膨張シートをカップインソール１０枚
取りの１５０℃の型中に入れ、７０kg/cm2にて２分間型
締めし、その後１５０℃で冷却し、型から取出し切断
し、１０枚（左右５枚づつ）のカップインソールを得
た。EXAMPLE 100 parts by weight of ethylene vinyl acetate copolymer (vinyl acetate content 30%), 10 parts by weight of natural rubber, 100 parts by weight of polyamide fiber (20 denier in diameter, 15 mm in length), and 2.0 parts by weight of pigment The mixture was kneaded with an open roll machine at a temperature of 40 ° C. ± 30 minutes and sheeted to a thickness of 0.7 mm. A 4.5 mm thick open-cell polyurethane sheet is laminated on the upper surface of this sheet via a hot-melt adhesive made of ethylene vinyl acetate copolymer, and a natural fiber fabric is further laminated on the upper surface thereof via the adhesive. 130-16
It was placed in a hot air circulating oven at 0 ° C. for 5 minutes and expanded about three times. This inflatable sheet is placed in a 150 ° C. mold having 10 cup insoles, clamped at 70 kg / cm 2 for 2 minutes, then cooled at 150 ° C., removed from the mold and cut, and 10 sheets (5 sheets each on the left and right sides) ) Cup insole was obtained.
【００１１】[0011]
【効果】前記本発明の製法で得た靴用カップインソール
は通気性が良いので、足蒸れが生ぜず、体重によって薄
くなることもなく、従って、常時、当初の弾性が保持さ
れ、履き心地を損ねることはなく、又、強度も十分あ
り、着脱時に折れたり、靴から抜け出すこともない。The shoe insole obtained by the method of the present invention has good air permeability, so that the foot does not get stuffy and does not become thin due to weight, so that the original elasticity is always maintained and the comfort is improved. It is not damaged, and has sufficient strength, so that it does not break or slip out of shoes when attaching or detaching.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｂ２９Ｋ 105:08 Ｂ２９Ｌ 9:00 31:50 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code FI B29K 105: 08 B29L 9:00 31:50
Claims (5)
カップインソールの製法。 （ａ）熱可塑性合成樹脂又は熱可塑性ゴム１００重量部
に、ポリアミド繊維70〜１３０重量部を剪断力をかけな
がら混練する。 （ｂ）(a) 工程で得た混練物を圧延し、シート状にす
る。 （ｃ）(b) 工程で得たシートを熱空気中に入れ、膨張さ
せる。 （ｄ）(c) 工程で得た膨張シートの上面に、連続気泡性
合成樹脂シートと布帛とを順次接着剤を介して重ね、型
に入れ、加熱により前記樹脂シートを軟化状態とし、然
る後、型に入れ押圧し、冷却する。1. A method for producing a shoe cup insole comprising the following steps (a) to (d). (A) 70-130 parts by weight of a polyamide fiber is kneaded with 100 parts by weight of a thermoplastic synthetic resin or a thermoplastic rubber while applying a shearing force. (B) The kneaded material obtained in the step (a) is rolled into a sheet. (C) The sheet obtained in the step (b) is put into hot air and expanded. (D) An open-cell synthetic resin sheet and a cloth are sequentially laminated on the upper surface of the expanded sheet obtained in the step (c) via an adhesive, placed in a mold, and the resin sheet is softened by heating. Then, it is put into a mold, pressed, and cooled.
定した酢酸ビニル含有量が２５〜３３％のエチレン酢酸
ビニル共重合体である請求項１記載の靴用カップインソ
ールの製法。2. The method according to claim 1, wherein the thermoplastic synthetic resin is an ethylene vinyl acetate copolymer having a vinyl acetate content of 25 to 33% as measured by infrared analysis.
ンブロック共重合ゴム，ポリオレフイン共重合ゴム、又
はハイトランスー1.4 −ポリイソプレンである請求項１
記載の靴用カップインソールの製法。3. The thermoplastic rubber is styrene / butadiene block copolymer rubber, polyolefin copolymer rubber, or high trans-1.4-polyisoprene.
The method for producing the described cup insole for shoes.
塑性ゴムのブレンド体である請求項１記載のカップイン
ソールの製法。4. The method for producing a cup insole according to claim 1, wherein the thermoplastic synthetic resin is a blend of a thermoplastic rubber having less than an equal amount.
いて、加熱前に比べ３〜５倍に膨張している請求項１記
載の靴用カップインソールの製法。5. The method for producing a shoe cup insole according to claim 1, wherein the sheet obtained in the step (C) expands 3 to 5 times in thickness compared to before heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7120896A JP2750670B2 (en) | 1995-04-20 | 1995-04-20 | How to make cup insoles for shoes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7120896A JP2750670B2 (en) | 1995-04-20 | 1995-04-20 | How to make cup insoles for shoes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08289805A JPH08289805A (en) | 1996-11-05 |
| JP2750670B2 true JP2750670B2 (en) | 1998-05-13 |
Family
ID=14797684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7120896A Expired - Fee Related JP2750670B2 (en) | 1995-04-20 | 1995-04-20 | How to make cup insoles for shoes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2750670B2 (en) |
-
1995
- 1995-04-20 JP JP7120896A patent/JP2750670B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08289805A (en) | 1996-11-05 |
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