JPH01238802A - Manufacture of insole made of polyurethane - Google Patents
Manufacture of insole made of polyurethaneInfo
- Publication number
- JPH01238802A JPH01238802A JP63066189A JP6618988A JPH01238802A JP H01238802 A JPH01238802 A JP H01238802A JP 63066189 A JP63066189 A JP 63066189A JP 6618988 A JP6618988 A JP 6618988A JP H01238802 A JPH01238802 A JP H01238802A
- Authority
- JP
- Japan
- Prior art keywords
- foam
- liquid mixture
- insole
- latex
- foamed
- 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.)
- Granted
Links
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 38
- 239000004814 polyurethane Substances 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000004744 fabric Substances 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 18
- 229920000126 latex Polymers 0.000 claims abstract description 13
- 239000004816 latex Substances 0.000 claims abstract description 11
- 238000005187 foaming Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 3
- 239000006260 foam Substances 0.000 abstract description 10
- 238000001035 drying Methods 0.000 abstract description 6
- 229920006173 natural rubber latex Polymers 0.000 abstract description 2
- 239000011800 void material Substances 0.000 abstract 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 229920001512 foam latex Polymers 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- 230000005484 gravity Effects 0.000 description 4
- 239000005977 Ethylene Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- -1 dry it Substances 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920006264 polyurethane film Polymers 0.000 description 2
- PAALZGOZEUHCET-UHFFFAOYSA-N 1,4-dioxecane-5,10-dione Chemical compound O=C1CCCCC(=O)OCCO1 PAALZGOZEUHCET-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 229920003054 adipate polyester Polymers 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- KIQKWYUGPPFMBV-UHFFFAOYSA-N diisocyanatomethane Chemical compound O=C=NCN=C=O KIQKWYUGPPFMBV-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000010058 rubber compounding Methods 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
Description
【発明の詳細な説明】 イ）産業上の利用分野 本発明はポリウレタン製インソールの製法に関する。[Detailed description of the invention] b) Industrial application field The present invention relates to a method for manufacturing polyurethane insoles.
口）従来の技術
ポリウレタン製インソールの表面には、通常、使用時の
足裏への感触、耐久性、外観等を向上させるために、布
帛が重層されている。(Example) Conventional technology The surface of a polyurethane insole is usually layered with fabric in order to improve the feel to the sole of the foot, durability, appearance, etc. during use.
この布帛の重層は、下型のインソール形状の空窩部に発
泡ポリウレタン液状混合物を所定量入れ、重層しようと
する布帛により前記空窩部を覆い、上型と組合せ、加熱
等により発泡ポリウレタン液状混合物を発泡硬化させ、
一体止することにより行われていた。This layering of fabric is performed by placing a predetermined amount of the foamed polyurethane liquid mixture into the insole-shaped cavity of the lower mold, covering the cavity with the fabric to be layered, combining it with the upper mold, and heating the foamed polyurethane liquid mixture. foam and harden,
This was done by stopping all at once.
前記工程に於いて、下型空窩部内で発泡ポリウレタン液
状混合物を加熱等により発泡硬化させ布帛と一体化させ
るときに、布帛の織目１編目等から液状の発泡ポリウレ
タンが透過してきて出来上がったインソール表面に現出
し、汚れたようになり、外観を低下させていた。In the above step, when the foamed polyurethane liquid mixture is foamed and hardened by heating etc. in the lower mold cavity and integrated with the fabric, the liquid foamed polyurethane permeates through the first stitch of the fabric, etc., resulting in an insole. It appeared on the surface and looked dirty, degrading its appearance.
そのため、従来、インソールの製造工程で下面に予めポ
リウレタンフィルムを熱圧着した布帛を使用して、発泡
ポリウレタン液状混合物を入れた下型空窩部を覆う方法
、又、下面にポリウレタン接着剤を厚めに塗布し乾燥さ
せた布帛を使用して発泡ポリウレタン液状混合物を入れ
た下型空窩部を覆う方法等が実施されていた。For this reason, conventionally, in the insole manufacturing process, a fabric with a polyurethane film bonded under heat and pressure to the lower surface of the fabric was used to cover the lower mold cavity filled with a foamed polyurethane liquid mixture, or a polyurethane adhesive was applied thickly to the lower surface. A method has been practiced in which a fabric that has been applied and dried is used to cover the cavity of the lower mold containing a foamed polyurethane liquid mixture.
ハ）発明が解決しようとする課題
しかし、前者によれば、フィルムが高価なため製造コス
トを上昇させ、その上昇を避けようとしてフィルムを薄
くした場合、下型空窩部への発泡ポリウレタン液状混合
物の注入を全面にわたって均等にしておかないと、部分
的に多量に注入された箇所で、織目２編目等に発泡途中
で発泡ポリウレタンが浸透して表面に現出するおそれが
あり、後者によれば、ポリウレタン接着剤が織目１編目
等に充填してしまい、乾燥後硬くなり、足裏への感触を
著しく低下させていた。C) Problems to be Solved by the Invention However, according to the former, the film is expensive, which increases the manufacturing cost, and if the film is made thinner in order to avoid this increase, the foamed polyurethane liquid mixture is added to the lower mold cavity. If the polyurethane is not injected evenly over the entire surface, there is a risk that the polyurethane foam will penetrate into the second stitch of the weave during foaming and appear on the surface in areas where a large amount of polyurethane has been injected. For example, the polyurethane adhesive filled the first stitch of the fabric and became hard after drying, significantly reducing the feel on the soles of the feet.
本発明は、前記のような従来のポリウレタン製インソー
ルの製法が有していた欠点を解決することを目的とする
ものである。The present invention aims to solve the drawbacks of the conventional method for manufacturing polyurethane insoles as described above.
二）課題を解決するための手段
本発明のポリウレタン製インソールの製法は、起泡ラテ
ックスを布帛の下面に塗布し乾燥し発泡硬化させ、下型
のインソール形状の空窩部に発泡ポリウレタン液状混合
物を所定量入れ、前記布帛のラテックス発泡硬化面を下
にして前記空窩部上面を覆い、上型と組合せ、適宜条件
で前記発泡ポリウレタン液状混合物を発泡硬化させ、前
記布帛と一体とすることを特徴とするものである。2) Means for Solving the Problems The method of manufacturing the polyurethane insole of the present invention is to apply foamed latex to the lower surface of the fabric, dry it, foam and harden it, and then apply the foamed polyurethane liquid mixture to the hollow part of the insole shape of the lower mold. A predetermined amount of the foamed polyurethane liquid mixture is poured into the fabric to cover the upper surface of the cavity with the foamed and hardened side of the fabric facing down, and combined with an upper mold, and the foamed polyurethane liquid mixture is foamed and cured under appropriate conditions to be integrated with the fabric. That is.
起泡ラテックスは、乾燥後の比重が０．２〜０．４にな
るように機械発泡した、天然ゴムラテックス、スチレン
−ブタジェン共重合ゴムラテックス、アクリルニトリル
−ブタジェン共重合ゴムラテックス、ポリウレタンエマ
ルジョン、エチレン−酢酸ビニルエマルジョン等が適宜
使用される。Foamed latex includes natural rubber latex, styrene-butadiene copolymer rubber latex, acrylonitrile-butadiene copolymer rubber latex, polyurethane emulsion, and ethylene, which are mechanically foamed to have a specific gravity of 0.2 to 0.4 after drying. - Vinyl acetate emulsion etc. are used as appropriate.
このとき、前記範囲より比重が大きいと塗布した布帛の
硬さが増し、小さすぎると織目１編目等から目もれし、
何れにしても好ましくない。At this time, if the specific gravity is larger than the above range, the hardness of the applied fabric will increase, and if it is too small, it will leak from the first stitch, etc.
Either way, I don't like it.
布帛は、インソールに突起やアーチ状の膨出部があって
も、支障な（対応できるように伸縮性の布帛が適宜使用
される。Even if the insole has protrusions or arch-shaped bulges, a stretchable fabric is used as appropriate to avoid problems.
【実 施 例］
所定量の加硫剤、加硫促進剤、起泡剤、充填剤等のゴム
配合剤が添加され、乾燥後の比重が０．３になるように
機械発泡された天然ゴムラテックスをフレンチパイル（
ポリアミド系）の下面に塗布しく厚みＩ ｎ） 、緊張
状態で１４０〜１５０℃の乾燥装置中に１０分間入れ、
加硫し乾燥する。[Example] Natural rubber that is mechanically foamed to have a specific gravity of 0.3 after drying by adding a specified amount of rubber compounding agents such as a vulcanizing agent, a vulcanization accelerator, a foaming agent, and a filler. French pile latex (
Apply it to the bottom surface of the polyamide type (with a thickness of I n), put it under tension in a drying device at 140 to 150°C for 10 minutes,
Vulcanize and dry.
下型（温度４０℃）のインソール形状の空窩部に、硬化
後の比重が０．３になる、エチレンアジペート系ポリエ
ステル、エチレンジオール、メチレンジイソシアネート
を主成分とする発泡ポリウレタン液状混合物を入れ、こ
の上面を、前記フレンチパイルのラテックス発泡硬化面
を下にして覆い、上型（温度４０℃）と組合せ、５分間
静置し、空窩部内の発泡ポリウレタン液状混合物を発泡
硬化させ、同時にフレンチパイル下面と一体化させる。A foamed polyurethane liquid mixture containing ethylene adipate polyester, ethylene diol, and methylene diisocyanate as main components and having a specific gravity of 0.3 after curing is put into the insole-shaped cavity of the lower mold (temperature 40°C). Cover the upper surface of the French pile with the latex foamed hardened side down, combine with the upper mold (temperature 40°C), and leave to stand for 5 minutes to foam and harden the foamed polyurethane liquid mixture in the cavity, and at the same time cover the lower surface of the French pile. be integrated with.
上型を取り除き、発泡硬化物を型抜きし、周縁部のはみ
だし等を切断し、所期のポリウレタン製インソールを得
た。The upper mold was removed, the cured foam product was cut out, and the protruding edges were cut off to obtain the desired polyurethane insole.
へ）作用及び効果
インソールのベースである発泡ポリウレタン部と上面で
一体となっている布帛は、目もれ防止のために処理した
層が発泡したラテックス皮膜であるため柔軟であり、し
かも乾燥前の流動時には起泡状態であるため織目９編目
等を詰めることはなく、かかる点からも柔軟性はいささ
かも失われない。F) Function and Effect The fabric that is integrated with the foamed polyurethane part that is the base of the insole on the upper surface is flexible because the layer treated to prevent leakage is a foamed latex film, and it is flexible before drying. Since it is in a foamed state during flow, it is not packed with 9 stitches of weave, and from this point of view, flexibility is not lost in the slightest.
又、板金、製造工程中、下型空窩部への発泡ポリウレタ
ン液状混合物の注入が不均一であっても、布帛下面のラ
テックス皮膜は厚みが全面均一で部分的に薄い箇所がな
いため、ポリウレタンの発泡中の圧力に耐えられ破れる
ことはなく、発泡ポリウレタンの織目１編目への浸透を
防ぎ、従って、インソール表面への現出を確実に防ぎう
る。In addition, even if the foamed polyurethane liquid mixture is not uniformly injected into the lower mold cavity during the sheet metal manufacturing process, the latex film on the bottom surface of the fabric has a uniform thickness over the entire surface and there are no thin areas, so the polyurethane It can withstand the pressure during foaming and will not tear, preventing the foamed polyurethane from penetrating into the first stitch of the weave, and therefore reliably preventing it from appearing on the insole surface.
しかも、前記発泡は、殆どの場合、連続気孔を形成する
ので、足裏の発汗による熱気は周縁の切断面から容易に
放散し、履用感を向上させることができる。Moreover, since the foam forms continuous pores in most cases, hot air caused by perspiration on the sole of the foot can be easily dissipated from the cut surface of the periphery, improving the feeling of wearing.
さらに又、起泡ラテックスはポリウレタンフィルム等に
比べて安価であるため、発泡ポリウレタンインソールの
コストダウンにも貢献する。Furthermore, since foamed latex is cheaper than polyurethane films and the like, it also contributes to reducing the cost of foamed polyurethane insoles.
尚、上記ポリウレタン製インソールの製法についての技
術思想は、内布を有するポリウレタン製ブーツ及びイン
ナーブーツにも全く同様に適用される。Note that the technical idea regarding the manufacturing method of the polyurethane insole described above is also applied to polyurethane boots and inner boots having an inner fabric in exactly the same manner.
特許出願人 月星化成株式会社Patent applicant Tsukiboshi Kasei Co., Ltd.
Claims (1)
せ、下型のインソール形状の空窩部に発泡ポリウレタン
液状混合物を所定量入れ、前記布帛のラテックス発泡硬
化面を下にして、前記空窩部上面を覆い、上型と組合せ
適宜条件で前記発泡ポリウレタン液状混合物を発泡硬化
させ、前記布帛と一体とすることを特徴とするポリウレ
タン製インソールの製法。Foaming latex is applied to the lower surface of the fabric, dried and foamed to harden. A predetermined amount of the foamed polyurethane liquid mixture is poured into the insole-shaped cavity of the lower mold, and the foamed latex cured side of the fabric is facing down. A method for manufacturing a polyurethane insole, comprising: covering the upper surface of the polyurethane insole, foaming and hardening the foamed polyurethane liquid mixture under appropriate conditions in combination with an upper mold, and integrating the foamed polyurethane liquid mixture with the fabric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63066189A JPH0618521B2 (en) | 1988-03-18 | 1988-03-18 | How to make polyurethane insoles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63066189A JPH0618521B2 (en) | 1988-03-18 | 1988-03-18 | How to make polyurethane insoles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01238802A true JPH01238802A (en) | 1989-09-25 |
| JPH0618521B2 JPH0618521B2 (en) | 1994-03-16 |
Family
ID=13308649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63066189A Expired - Lifetime JPH0618521B2 (en) | 1988-03-18 | 1988-03-18 | How to make polyurethane insoles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0618521B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990046549A (en) * | 1999-03-24 | 1999-07-05 | 추대진 | Manufacture method of footwear in-sole |
-
1988
- 1988-03-18 JP JP63066189A patent/JPH0618521B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990046549A (en) * | 1999-03-24 | 1999-07-05 | 추대진 | Manufacture method of footwear in-sole |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0618521B2 (en) | 1994-03-16 |
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