JPH05111404A - Production of injection molded shoes - Google Patents
Production of injection molded shoesInfo
- Publication number
- JPH05111404A JPH05111404A JP3299672A JP29967291A JPH05111404A JP H05111404 A JPH05111404 A JP H05111404A JP 3299672 A JP3299672 A JP 3299672A JP 29967291 A JP29967291 A JP 29967291A JP H05111404 A JPH05111404 A JP H05111404A
- Authority
- JP
- Japan
- Prior art keywords
- insole
- calif
- cloth
- semi
- shoe
- 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.)
- Pending
Links
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、簡単な工程によりカリ
フ縫いによる甲被内面に中敷又は半中敷を確実に接着し
うる射出成形靴の製造法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an injection-molded shoe capable of reliably adhering an insole or a semi-insole to the inner surface of an instep by caliphing by a simple process.
【0002】[0002]
【従来の技術】射出成形靴は、一般に中底布をカリフ縫
いした甲被を靴型に吊込み、下型と組み合わせ、その時
形成された空窩部にポリ塩化ビニル,ポリウレタン等を
射出充填し、加熱,冷却することにより製造されてい
る。この方法は通常、ダイレクトソーリング法といわれ
ている。この方法によって得られた射出成形靴は内面即
ち接足面において甲被下周縁と中底布周縁との縫目にラ
インが形成され、その縫目より射出充填した樹脂が漏れ
て外観上見苦しく、特に高級な靴には不向きであった。
従って、このラインを覆って見えなくするために、中
敷を靴内部に挿入する方法、半中敷を中底布に貼付け
る方法、中敷を中底布に貼付ける方法が実施されてい
た。2. Description of the Related Art Generally, an injection molded shoe is constructed by suspending an instep cover in which a calf cloth is sewn on an insole into a shoe mold, and combining it with a lower mold. It is manufactured by heating, cooling. This method is usually called a direct sawing method. In the injection-molded shoe obtained by this method, a line is formed in the seam between the lower instep peripheral edge and the insole peripheral edge on the inner surface, that is, the foot contact surface, and the injection-filled resin leaks from the seam and is unsightly in appearance. Especially unsuitable for high-end shoes.
Therefore, in order to cover this line and make it invisible, a method of inserting the insole inside the shoe, a method of attaching the semi-insole to the insole cloth, and a method of attaching the insole to the insole cloth have been carried out. ..
【0003】前記の方法による時は、中敷が柔らかい
合成皮革、又は高分子体のスポンジよりなる場合、履用
後靴を脱ぐときに足の爪先が中敷をめくってしまい、こ
れが繰り返されると、ついには折れ曲がって破損してし
まうため、殆どの場合前記の,の方法即ち、半中敷
又は中敷を中底布に貼付ける方法が採用されていた。こ
れには、自然加硫型の感圧天然ゴムラテックスを使用す
る方法とホットメルト樹脂を使用する方法とがあった。
自然加硫型の感圧天然ゴムラテックスを使用して半中敷
を中底布に貼付けるには、半中敷の裏面に前記ラテック
スをローラにて塗布し、靴履口部を汚さないように内部
に挿入し、手で軽く押さえしばらく放置し、乾燥しかか
った時に手で再度押さえることにより、貼付けられてお
り、又、中敷を中底布に貼合せるには、靴内部の中底布
に刷毛で前記ラテックスを塗布し、中敷をその上に載置
し、前記と同じ要領て手で押さえることにより貼付けて
いた。ホットメルト樹脂を使用して半中敷又は中敷を中
底布に貼付けるには、それらの裏面にホットメルト樹脂
を塗布しておき、その樹脂面を下面にして、靴内部に挿
入後、加熱された靴型により押圧し接着していた。According to the above method, if the insole is made of soft synthetic leather or a polymer sponge, the toes of the toes flip over the insole when taking off the shoes after wearing, and this is repeated. In most cases, the method described in the above, that is, the method of attaching the semi-insole or the insole to the insole is applied, because it is bent and damaged at last. There are a method using a natural vulcanization type pressure-sensitive natural rubber latex and a method using a hot melt resin.
To attach the insole to the insole using natural vulcanization type pressure-sensitive natural rubber latex, apply the latex to the back of the insole with a roller and keep the shoe boots clean. It is attached by inserting it inside, holding it lightly with your hand, leaving it for a while, and then pressing it again with your hand when it is about to dry. The latex was applied to the above with a brush, the insole was placed on it, and it was attached by pressing it by hand in the same manner as described above. To attach the semi-soles or insoles to the insole using hot-melt resin, apply hot-melt resin to the back surface of them and make the resin surface the lower surface, and insert it inside the shoe. It was pressed and adhered by a heated shoe mold.
【0004】[0004]
【発明が解決しようとする課題】しかし、自然加硫型の
感圧天然ゴムラテックスを使用して半中敷を中底布に貼
付ける方法は裏面にローラで塗布されたラテックスによ
り靴履口部を汚さないように靴内部に挿入するときは、
極めて細心の注意をはらわなければならず、熟練と時間
を要し、実際には実用化しにくく、又、前記ラテックス
を使用して中敷を中底布に貼付ける方法は、靴内部の爪
先までラテックスを十分に塗布することができず、直ぐ
その部分が剥離してしまう欠点があった。However, the method of sticking the half insole to the insole cloth by using the natural vulcanization type pressure sensitive natural rubber latex is to use the latex coated on the back surface with the latex to cover the shoe boots. When inserting it inside the shoes to keep it clean,
It requires extremely careful attention, requires skill and time, and is difficult to put into practical use in practice. Also, the method of sticking the insole to the insole using the latex is to the toes inside the shoe. There was a drawback that the latex could not be applied sufficiently and the portion was immediately peeled off.
【0005】一方、ホットメルト樹脂を使用して、半中
敷又は中敷を中底布に貼付ける方法は、熱プレス機を用
いて押圧する方法が採用されているため、サイズや品種
等により一つ一つが異なっている中底布面の立体形状に
熱プレス機の押圧面を合致するように取替えにくく、確
実に接着させることができなかった。本発明は、前記の
全ての方法が有している欠点を解決することを目的とす
るものである。On the other hand, the method of sticking the insole or the insole to the insole using the hot melt resin is a method of pressing with a heat press machine. It was difficult to replace the pressing surface of the heat press machine so that the pressing surface of the heat press machine would match the three-dimensional shape of the insole cloth surface, which was different from each other, and it was not possible to reliably bond them. The invention is aimed at overcoming the drawbacks of all the above-mentioned methods.
【0006】[0006]
【課題を解決するための手段】本発明は、中敷又は半中
敷片面にホットメルト性合成樹脂をラミネートし、前記
ラミネート層が下方に向くように靴型下面に仮着後、中
底布がカリフ縫いされている甲被を吊込み下型と組み合
わせ、そのとき形成された空窩部内に外底用合成樹脂コ
ンパウンドを射出充填し、適宜温度で加熱後冷却固化す
ることを要旨とするものである。ここで、ホットメルト
性合成樹脂としては、低融点例えば70〜80℃のエチ
レン・酢酸ビニル共重合体,ポリウレタン,ポリエステ
ル,ポリアミド等が使用される。According to the present invention, a hot-melt synthetic resin is laminated on one surface of an insole or a semi-insole, and after temporarily adhering to the lower surface of the shoe mold so that the laminated layer faces downward, an insole cloth is formed. The main point is to combine the instep cover that is sewn with a caliper with a hanging lower mold, inject the synthetic resin compound for the outer bottom into the cavity formed at that time, heat it at a suitable temperature and then solidify by cooling. Is. Here, as the hot-melt synthetic resin, a low melting point, for example, an ethylene / vinyl acetate copolymer having a temperature of 70 to 80 ° C., polyurethane, polyester, polyamide or the like is used.
【0007】中敷又は半中敷を靴型下面に仮着するに
は、靴型の踵部等に再剥離性のシリコン粘着剤を塗布
し、又は外部に通じる細孔を設け、靴型内部よりエアー
吸引することによって行われる。又、ラストは踵部が割
型になっているものを使用するとラストからの成形され
た靴の脱型が容易となる。In order to temporarily attach the insole or the semi-insole to the lower surface of the shoe mold, a removable silicone adhesive is applied to the heel of the shoe mold, or pores communicating with the outside are provided to form the inside of the shoe mold. It is performed by sucking more air. If the last has a split heel, it is easy to remove the molded shoe from the last.
【0008】[0008]
【作用及び効果】本発明は、中敷又は半中敷の片面の全
面に塗布されたホットメルト性合成樹脂が外底成形時の
熱と圧力とにより、溶融状態となり、外底成形時に同時
に中敷又は半中敷と中底布との接着が行われ、従って従
来実施されていたような別工程としての接着工程が全く
不要となり、且つ、その時全面で接着が確実に行われる
ので、爪先部であっても中敷と中底布とが剥離する虞れ
は全くない。又、半中敷の場合にあっては、接着された
後、半中敷表面とその他の部分の表面即ち中底布表面と
は同一水準であって、半中敷だけが突出していることは
なく、従って、履用を長期間にわたって繰り返しても半
中敷が剥離し易くなることはない。The operation and effect of the present invention is that the hot-melt synthetic resin applied to the entire surface of one side of the insole or the half insole becomes a molten state by the heat and pressure at the time of molding the outsole, and at the same time, at the time of molding the outsole. Since the insole or semi-insole and the insole are adhered to each other, there is no need for a separate adhering step that has been conventionally performed, and at that time, the entire surface is securely adhered. However, there is no possibility that the insole and the insole cloth are separated from each other. Also, in the case of a half insole, after being bonded, the surface of the half insole and the surface of the other part, that is, the surface of the insole cloth, are at the same level, and only the half insole is protruding. Therefore, even if the wearing is repeated over a long period of time, the semi-insole does not easily peel off.
【0009】[0009]
【実施例1】厚み2mmのポリウレタン系合成皮革製半中
敷の裏面にエチレン・酢酸ビニル共重合体( ヒロダイン
工業株式会社製ヒロダイン(登録商標),エチレン含有量
78%,酢酸ビニル含有量22%)をTダイにて80ミ
クロンラミネートし、このラミネート層が下方に向くよ
うに靴型(約80℃に加熱されている)下面に仮着し
た。仮着には、シリコン粘着剤(東芝シリコン(株)製
YR3340)に炭酸カルシウム10%を添加したもの
を使用した。炭酸カルシウムを添加したのは、再剥離性
を確実にするためである。このラストに中底布がカリフ
縫いされている甲被を吊込み、下型と組み合わせそのと
き形成された空窩部内にポリ塩化ビニル(平均重合度1
000),可塑剤DOP80重量部,安定剤ブチル・錫
・ラウレート3重量部,酸化チタン5重量部よりなるコ
ンパウンドを180℃で射出充填し、冷却後、脱型し
た。このようにして極めて簡単な工程で製造された靴
を、一日当り7〜8時間履用し6カ月間続けたが、半中
敷は全く剥離しなかった。Example 1 An ethylene / vinyl acetate copolymer (Hirodine (registered trademark) manufactured by Hirodyne Industry Co., Ltd., ethylene content 78%, vinyl acetate content 22%) was formed on the back surface of a polyurethane synthetic leather insole having a thickness of 2 mm. 80) was laminated with a T-die for 80 μm and was temporarily attached to the lower surface of the shoe mold (heated to about 80 ° C.) so that the laminated layer faces downward. For temporary attachment, a silicon adhesive (YR3340 manufactured by Toshiba Silicon Co., Ltd.) to which 10% of calcium carbonate was added was used. The reason for adding calcium carbonate is to ensure removability. The instep cover with the insole cloth sewn on is hung on this last, and combined with the lower mold, polyvinyl chloride (average polymerization degree 1
000), 80 parts by weight of plasticizer DOP, 3 parts by weight of stabilizer butyl / tin / laurate, and 5 parts by weight of titanium oxide were injection-filled at 180 ° C., cooled, and then demolded. The shoes thus manufactured by a very simple process were worn for 7 to 8 hours per day and continued for 6 months, but the half insoles did not peel off at all.
【0010】[0010]
【実施例2】実施例1におけるポリウレタン系合成皮革
製半中敷の代わりに、ポリエステル系合成皮革製中敷を
使用し、靴型下面との仮着手段として、靴型下面に平均
的に6カ所に細孔を設け、内部より吸引する方法を用
い、他は実施例と同じ方法で靴を製造し、同じ効果を得
た。Example 2 A polyester synthetic leather insole was used in place of the polyurethane synthetic leather insole in Example 1, and an average of 6 on the lower surface of the shoe was used as a temporary attachment means with the lower surface of the shoe. A shoe was manufactured in the same manner as in Example except that pores were provided at some places and suction was performed from the inside, and the same effect was obtained.
Claims (1)
合成樹脂をラミネートし、前記ラミネート層が下方に向
くように靴型下面に仮着後、中底布がカリフ縫いされて
いる甲被を吊込み、下型と組み合わせ、そのとき形成さ
れた空隙部に外底用合成樹脂コンパウンドを射出充填
し、適宜温度で加熱後、冷却固化することを特徴とする
射出成形靴の製造法。1. An instep in which a hot-melt synthetic resin is laminated on one surface of an insole or a semi-insole and is temporarily attached to the lower surface of the shoe so that the laminated layer faces downward, and then the insole cloth is sewn in caliph. A method for manufacturing an injection-molded shoe, which comprises suspending a cover, combining the lower mold with the lower mold, injecting a synthetic resin compound for an outsole into the void formed at that time, heating at an appropriate temperature, and then cooling and solidifying.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3299672A JPH05111404A (en) | 1991-10-18 | 1991-10-18 | Production of injection molded shoes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3299672A JPH05111404A (en) | 1991-10-18 | 1991-10-18 | Production of injection molded shoes |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH05111404A true JPH05111404A (en) | 1993-05-07 |
Family
ID=17875579
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3299672A Pending JPH05111404A (en) | 1991-10-18 | 1991-10-18 | Production of injection molded shoes |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH05111404A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5757501A (en) * | 1980-09-24 | 1982-04-06 | Kohkoku Chem Ind | Production of injection molded shoes |
JPS59103603A (en) * | 1982-12-07 | 1984-06-15 | アキレス株式会社 | Production of conductive foots |
-
1991
- 1991-10-18 JP JP3299672A patent/JPH05111404A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5757501A (en) * | 1980-09-24 | 1982-04-06 | Kohkoku Chem Ind | Production of injection molded shoes |
JPS59103603A (en) * | 1982-12-07 | 1984-06-15 | アキレス株式会社 | Production of conductive foots |
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