JP5120870B2 - Leg protection half boots and manufacturing method thereof - Google Patents
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Description
本発明は、脚部保護用半長靴に関する。さらに詳しくは、本発明は、緊急の事態が生じたときに、脚部保護用ゴム靴下と同時に迅速に着用することができる脚部保護用半長靴に関する。 The present invention relates to leg boots. More particularly, the present invention relates to a leg protection half boot that can be quickly worn simultaneously with a rubber sock for leg protection when an emergency situation occurs.
気体又は液体の薬品や、細菌で汚染された場所で作業する際に、脚部の保護を目的として、ゴム靴下が着用される。しかし、ゴム靴下を着用した上で靴を履こうとすると、ゴム靴下の外側は滑らないので、靴が非常に履きにくい。さりとて、ゴム靴下を着用することなく、靴のみを履いていると、靴に傷や破れが発生した場合には、薬品や細菌から脚部を保護することができない。そのために、ゴム靴下を着用した上で、作業用の安全半長靴などを履いて作業にあたる。ゴム靴下は通気性がないので、常時着用することは不可能であり、汚染場所での作業の必要性が生じたときに着用される。
ゴム靴下は滑り性がないので、布製の靴下のように簡単に着用することができず、例えば、ゴム靴下をいったん裏返しにして爪先から順次反転させながら着用する、ゴム靴下の内側に滑り粉、シリコーン、水などを散布して滑り性を与えて着用するなどの手段が取られる。また、ゴム靴下を着用した状態で靴を履こうとしても、ゴム靴下に滑り性がないことが障害となって、寸法の合った靴を手際よく履くことは困難である。
しかし、気体又は液体の薬品や、細菌による汚染は、突発的な緊急事態として発生する場合もあり、そのような場合には、迅速にゴム靴下を着用し、作業用の靴を履いて出動することが要求される。このために、短時間で着用することができる脚部保護用ゴム靴下と脚部保護用靴が求められている。
Rubber socks are worn for the purpose of protecting the legs when working in a place contaminated with gaseous or liquid chemicals or bacteria. However, if an attempt is made to wear a shoe while wearing a rubber sock, the outer side of the rubber sock does not slip, making it very difficult to wear the shoe. When wearing only shoes without wearing rubber socks, the legs cannot be protected from chemicals and bacteria when the shoes are damaged or torn. For this purpose, wear rubber socks and wear work safety boots. Since rubber socks are not breathable, they cannot be worn at all times and are worn when there is a need to work in a contaminated area.
Since rubber socks are not slippery, they cannot be worn easily like cloth socks. Means such as spraying silicone, water, etc. to give slipperiness are used. Further, even if an attempt is made to wear a shoe while wearing a rubber sock, the lack of slipperiness of the rubber sock is an obstacle, and it is difficult to wear a shoe having a suitable size.
However, contamination by gas or liquid chemicals or bacteria may occur as a sudden emergency. In such a case, wear rubber socks promptly and wear work shoes. Is required. For this reason, there is a need for leg protection rubber socks and leg protection shoes that can be worn in a short time.
本発明は、緊急の事態が生じたときに、脚部保護用ゴム靴下と同時に迅速に着用することができる脚部保護用半長靴を提供することを目的としてなされたものである。 An object of the present invention is to provide a leg protection half boot that can be quickly worn simultaneously with a rubber sock for leg protection when an emergency situation occurs.
本発明者らは、上記の課題を解決すべく鋭意研究を重ねた結果、内側の略全面に布が取り付けられたゴム靴下を半長靴の中に入れ、ゴム靴下の底部及び足首部で半長靴の内側と接着し、ゴム靴下の底部と足首部の中間部で半長靴と遊離させることにより、ゴム靴下の中へ脚部を円滑に入れて着用することができ、しかも、一つの動作でゴム靴下を着用すると同時に半長靴を履き得ることを見いだし、この知見に基づいて本発明を完成するに至った。
すなわち、本発明は、
（１）作業の際に着用される脚部保護用半長靴であって、半長靴の内側に厚さ０.４〜１.２ｍｍのゴム靴下が備えられ、該ゴム靴下の内側の略全面に目開きが１０〜５００μｍであり、目開き率が１０〜６０％であるメッシュクロスが取り付けられ、該ゴム靴下が底部及び足首部において半長靴の内側と接着されてなり、該ゴム靴下の底部と足首部の中間部において半長靴の内側と遊離されてなることを特徴とする脚部保護用半長靴、
（２）ゴム靴下を構成するゴムがブチルゴムである(１)記載の脚部保護用半長靴、
（３）半長靴が、ブチルゴムにより構成されてなることを特徴とする(１)又は(２)記載の脚部保護用半長靴、
（４）脚型に、目開きが１０〜５００μｍであり、目開き率が１０〜６０％であるメッシュ靴下を装着し、ゴム配合物を、脚型に装着したメッシュ靴下の上に、０.４〜１.２ｍｍの厚さにコーティングし、加熱加硫後、脚型から取り外して、メッシュクロスが内側に取り付けられたゴム靴下を得て、別に、ゴム配合物を加熱成形して脚部保護用半長靴の表底接地部を作成して半長靴の表底を得て、得られた表底にゴム配合物を用いて甲部と胴部を形成して半長靴を得たのち、前記ゴム靴下の底部及び足首部の円周部を、ゴム糊を用いて半長靴の内側に前記ゴム靴下の底部及び足首部の中間部を前記半長靴から遊離させた状態で接着することを特徴とする脚部保護用半長靴の製造方法、
（５）(４)において、別に、ゴム配合物を加熱成形して脚部保護用半長靴の表底接地部を作成した後、発泡シート、金属板及びブチルゴムシートを、表底接地部の形状に切断し、この順に表底接地部に積層して接着し、半長靴の表底を得ることを特徴とする脚部保護用半長靴の製造方法、
（６）ゴム配合物がブチルゴム配合物である(４)又は(５)記載の脚部保護用半長靴の製造方法、及び、
（７）半長靴の表底に、中敷き鋼鉄板を積層することを特徴とする(４)〜(６)のいずれかに記載の脚部保護用半長靴の製造方法、
を提供するものである。
As a result of intensive research to solve the above problems, the present inventors have put a rubber sock with a cloth attached to almost the entire inner surface in the half boot, and the bottom and ankle of the rubber sock Adhesive to the inside of the rubber sock, and the middle part between the bottom of the rubber socks and the middle part of the ankle can be separated from the long boots so that the legs can be smoothly put into the rubber socks and worn in one operation. It has been found that half-boots can be worn at the same time as wearing socks, and the present invention has been completed based on this finding.
That is, the present invention
(1) Leg protection half boots worn during work, with rubber socks having a thickness of 0.4 to 1.2 mm provided on the inner side of the half boots, on substantially the entire inner surface of the rubber socks. A mesh cloth having an opening of 10 to 500 μm and an opening ratio of 10 to 60% is attached, and the rubber socks are bonded to the inside of the half boots at the bottom and ankles, Leg boots, characterized by being separated from the inside of the boots at the middle of the ankle,
(2) The rubber boots for protecting leg portions according to (1), wherein the rubber constituting the rubber socks is butyl rubber,
(3) The boots for leg protection according to (1) or (2), wherein the boots are made of butyl rubber,
(4) A mesh sock having an opening of 10 to 500 μm and an opening rate of 10 to 60% is mounted on the leg mold, and the rubber compound is placed on the mesh sock mounted on the leg mold by adding 0.00. Coating to a thickness of 4 to 1.2 mm, heat vulcanization, remove from the leg mold, get rubber socks with mesh cloth attached inside, separately heat molding rubber compound to protect the leg After creating an outsole of the boots by creating an outsole grounding part of the boots for the boots, and forming the upper part and the trunk using a rubber compound on the obtained outsole, The bottom part of the rubber sock and the circumference part of the ankle part are bonded to the inside of the half boots using rubber glue in a state where the bottom part of the rubber socks and the middle part of the ankle part are separated from the half boots. A method for manufacturing leg boots,
(5) In (4), separately, the rubber compound is heat-molded to create the ground contact part for the leg boots, and then the foam sheet, metal plate and butyl rubber sheet are formed into the shape of the ground contact part. Cut into two, and laminated and bonded to the bottom surface ground contact portion in this order to obtain the bottom surface of the half boots, a method for manufacturing leg boots,
(6) The method for producing a boot for protecting leg parts according to (4) or (5), wherein the rubber compound is a butyl rubber compound, and
(7) The method for manufacturing the boots for protecting leg portions according to any one of (4) to (6), wherein an insole steel plate is laminated on the bottom of the boots;
Is to provide.
本発明の脚部保護用半長靴は、その内側に備えられたゴム靴下の着用と同時に一つの動作で迅速に履くことができるので、緊急事態が発生した場合であっても、ゴム靴下と半長靴を着用して速やかに出動することができる。 Since the rubber boots for protecting the leg of the present invention can be quickly put on in one operation simultaneously with the wearing of the rubber socks provided on the inside thereof, even if an emergency occurs, the rubber socks and the half boots can be worn. Wearing boots can be dispatched promptly.
本発明の脚部保護用半長靴は、作業の際に着用される脚部保護用半長靴であって、半長靴の内側にゴム靴下が備えられ、該ゴム靴下の内側の略全面に布が取り付けられ、該ゴム靴下が底部及び足首部において半長靴の内側と接着されてなり、該ゴム靴下の底部と足首部の中間部において半長靴の内側と遊離されてなる脚部保護用半長靴である。
本発明の脚部保護用半長靴は、ゴム靴下を着用すると同時に一つの動作で半長靴を履くことができる。本発明の脚部保護用半長靴を着用することにより、地面、床面などが、有害な気体又は液体の薬品や、細菌などに汚染されたとき、脚部に障害を受けるおそれがなく、汚染物の除去作業を安全に行うことができる。薬品や細菌による汚染が緊急事態として発生したとき、本発明の脚部保護用半長靴を手早く着用して、迅速に出動することができる。
The leg protection half boots of the present invention are leg protection half boots worn at the time of work, and are provided with rubber socks on the inside of the half boots, and cloth is provided on substantially the entire inner side of the rubber socks. A rubber boot for protecting leg portions, wherein the rubber socks are attached to the inside of the boots at the bottom and ankles, and are separated from the inside of the boots at the middle of the bottoms and ankles of the rubber socks. is there.
The leg protection boots according to the present invention can be worn with a single operation while wearing rubber socks. By wearing the boots for leg protection of the present invention, when the ground, floor, etc. are contaminated with harmful gas or liquid chemicals, bacteria, etc., there is no risk of damage to the legs and contamination. It is possible to safely remove objects. When contamination by chemicals or bacteria occurs as an emergency, the leg protection half boots of the present invention can be quickly worn and dispatched quickly.
図１は、本発明の脚部保護用半長靴の一態様の説明図である。本態様の脚部保護用半長靴は、半長靴１の内側にゴム靴下２が備えられ、ゴム靴下の内側３の全面に布が取り付けられている。ゴム靴下は脚との滑り性が悪く、着用することは容易ではないが、本態様の脚部保護用半長靴においては、ゴム靴下の内側の全面に布が取り付けられているので、脚との滑り性が良好であり、通常の布製の靴下を着用する場合と同様に脚を円滑に入れて着用することができる。
図１に示す態様の脚部保護用半長靴においては、ゴム靴下が底部４及び足首部５において半長靴の内側と接着されており、底部と足首部の中間部６において、半長靴の内側と遊離されている。また、ゴム靴下の足首部の上部７においても、半長靴の内側と遊離されている。半長靴の内側に備えられたゴム靴下を、底部と足首部において半長靴の内側と接着し、底部と足首部の中間部において半長靴の内側と遊離させることにより、ゴム靴下の中へ脚を入れてゴム靴下を着用すると同時に一つの動作で半長靴を履くことができ、しかも、ゴム靴下を着用し、半長靴を履いた状態で円滑に活動することができる。
FIG. 1 is an explanatory view of one aspect of the leg protection half boots of the present invention. The leg protection half boots of this aspect are provided with a rubber sock 2 inside the half boot 1 and a cloth is attached to the entire inner side 3 of the rubber sock. The rubber socks have poor slipperiness with the legs and are not easy to wear.However, in the leg protection half boots of this aspect, the cloth is attached to the entire inner surface of the rubber socks. The slipperiness is good, and the legs can be smoothly put on and worn as in the case of wearing ordinary cloth socks.
In the leg protection half boots shown in FIG. 1, rubber socks are bonded to the inside of the half boots at the bottom part 4 and the
脚部保護用半長靴のゴム靴下が、底部と足首部の間に半長靴の内側と遊離された中間部を有せず、底部から足首部までが全面で半長靴の内側に接着されていると、ゴム靴下の剛性が高くなり、伸縮性がなくなって、着用することがほとんど不可能となる。中間部が部分的にでも半長靴の内側に接着されていると、着用が困難となるのみならず、ゴム靴下を着用し、半長靴を履いた状態での円滑な活動が妨げられる。脚部保護用半長靴のゴム靴下の底部における半長靴の内側との接着、又は、ゴム靴下の足首部における半長靴の内側との接着を省くと、ゴム靴下を着用し、半長靴を履いた状態での安定性がなくなり、円滑に作業することが困難となるおそれがある。
本発明の脚部保護用半長靴を履く場合は、爪先をゴム靴下の口に差し込み、ゴム靴下の口を両手で持って引き上げることにより、通常の布製の靴下と同様に迅速に着用することができ、靴下の着用と同時に半長靴も引き上げられて、半長靴を履いた状態となるので、装着に時間がかからない。また、外側の半長靴に万一傷ができても、内側のゴム靴下で有害ガスなどが遮断され、安全に作業を進めることができる。
The rubber socks of the boots for leg protection do not have the inner part of the boots and the free middle part between the bottom part and the ankle part, and the entire part from the bottom part to the ankle part is bonded to the inner part of the boots. Then, the rigidity of the rubber socks increases, the elasticity is lost, and it becomes almost impossible to wear. If the middle part is partially adhered to the inside of the half boots, not only will it be difficult to wear, but smooth activities will be hindered when wearing rubber socks and wearing half boots. The rubber socks were worn and the boots were worn when the adhesion of the rubber boots of the leg protection half boots to the inside of the boots or the adhesion of the rubber socks to the inside of the boots was omitted. The stability in the state is lost, and it may be difficult to work smoothly.
When wearing the leg protection half boots of the present invention, it can be quickly worn like a normal cloth socks by inserting the toes into the mouth of the rubber socks and pulling the mouth of the rubber socks with both hands. Yes, the boots are lifted at the same time as the socks are worn, and the boots are put on. In addition, even if the outer boots are damaged, harmful gas or the like is blocked by the inner rubber socks, and the work can proceed safely.
本発明の脚部保護用半長靴のゴム靴下に用いるゴム素材に特に制限はなく、例えば、天然ゴム、クロロプレンゴム、ニトリルゴム、エチレンプロビレンゴム、ブチルゴム、ウレタンゴム、シリコーンゴム、フッ素ゴムなどを挙げることができる。これらの中で、ブチルゴムは、各種の気体の透過性が極めて低く、耐熱性、耐老化性、耐光性、耐オゾン性、耐薬品性、耐コロナ性、電気絶縁性、低反発弾性、衝撃吸収性、防振性、緩衝性などに優れているので特に好適に用いることができる。
本発明において、脚部保護用半長靴のゴム靴下のゴムの厚さに特に制限はないが、０.４〜１.２ｍｍであることが好ましく、０.６〜１.０ｍｍであることがより好ましい。ゴムの厚さが０.４ｍｍ未満であると、ゴム靴下の強度が不足するおそれがある。ゴムの厚さが１.２ｍｍを超えると、着用感が低下するおそれがある。
There is no particular limitation on the rubber material used for the rubber socks of the leg protection half boots of the present invention, such as natural rubber, chloroprene rubber, nitrile rubber, ethylene propylene rubber, butyl rubber, urethane rubber, silicone rubber, fluorine rubber, etc. Can be mentioned. Of these, butyl rubber has extremely low gas permeability, heat resistance, aging resistance, light resistance, ozone resistance, chemical resistance, corona resistance, electrical insulation, low rebound resilience, shock absorption It is particularly suitable for use because of its excellent properties, anti-vibration properties, buffering properties and the like.
In the present invention, the rubber thickness of the rubber socks of the leg protection half boots is not particularly limited, but is preferably 0.4 to 1.2 mm, more preferably 0.6 to 1.0 mm. preferable. If the rubber thickness is less than 0.4 mm, the strength of the rubber socks may be insufficient. If the rubber thickness exceeds 1.2 mm, the wearing feeling may be reduced.
本発明の脚部保護用半長靴においては、ゴム靴下の内側の略全面に取り付ける布がメッシュクロスであることが好ましい。ゴム靴下の内側にメッシュクロスを取り付けることにより、脚との抵抗を減じていっそう迅速に着用することができる。本発明に用いるメッシュクロスの材質に特に制限はなく、例えば、ポリエステル、ナイロン、ポリエチレン、ポリプロピレン、ポリテトラフルオロエチレン、綿などを挙げることができる。これらの中で、ナイロンのメッシュクロスは、伸縮性が大きく、ゴムとの接着性が良好なので好適に用いることができる。
本発明に用いるメッシュクロスは、目開きが１０〜５００μｍであることが好ましく、１００〜３００μｍであることがより好ましい。メッシュクロスの目開きが１０μｍ未満であっても、５００μｍを超えても、脚部保護用半長靴のゴム靴下と脚部との滑り性を向上する効果が十分に発現しないおそれがある。
本発明に用いるメッシュクロスは、目開き率が１０〜６０％であることが好ましく、３０〜５０％であることがより好ましい。メッシュクロスの目開き率が１０％未満であっても、６０％を超えても、脚部保護用半長靴のゴム靴下と脚部との滑り性を向上する効果が十分に発現しないおそれがある。
In the leg protection half boots of the present invention, it is preferable that the cloth attached to the substantially entire inner surface of the rubber socks is a mesh cloth. By attaching a mesh cloth to the inside of the rubber socks, it can be worn more quickly with reduced resistance to the legs. There is no restriction | limiting in particular in the material of the mesh cloth used for this invention, For example, polyester, nylon, polyethylene, a polypropylene, polytetrafluoroethylene, cotton etc. can be mentioned. Among these, nylon mesh cloth can be suitably used because it has high stretchability and good adhesion to rubber.
The mesh cloth used in the present invention preferably has an opening of 10 to 500 μm, and more preferably 100 to 300 μm. Even if the mesh cloth has an opening of less than 10 μm or more than 500 μm, the effect of improving the slipperiness between the rubber socks and the leg portions of the leg protection half boots may not be sufficiently exhibited.
The mesh cloth used in the present invention preferably has an opening ratio of 10 to 60%, more preferably 30 to 50%. Even if the mesh cloth has an opening ratio of less than 10% or more than 60%, the effect of improving the slipperiness between the rubber socks and the legs of the leg protection half-boots may not be sufficiently exhibited. .
本発明の脚部保護用半長靴のゴム靴下を製造する方法に特に制限はなく、例えば、脚型にメッシュクロスからなる靴下を装着して内側の全面のメッシュクロスとし、その上にゴム配合物をコーティングし、加熱して加硫することにより、ゴム靴下を得ることができる。メッシュクロスからなる靴下としては、例えば、市販の綿メッシュ靴下、ナイロンメッシュ靴下などを用いることができる。ゴム配合物としては、例えば、生ゴムに、硫黄、加硫促進剤、充填剤などを添加して混練した配合物を挙げることができる。
本発明の脚部保護用半長靴の甲被の材質に特に制限はなく、例えば、皮革、合成ゴムなどを挙げることができる。甲被の材質は、脚部保護用半長靴の使用状況に応じて適宜選択することができ、例えば、機械的損傷の防止が重要な場合には、クロムなめし又はクロムタンニン混合なめしによる牛革を用いることが好ましく、有毒ガスの透過の防止が重要な場合には、各種の気体の透過性が極めて低いブチルゴムを用いることが好ましい。必要に応じて、爪先を保護するために先しんを付けることができる。
本発明の脚部保護用半長靴の表底の材質に特に制限はなく、例えば、耐油性合成ゴム、発泡ポリウレタン、それらの重層組み合わせなどを挙げることができる。表底には、必要に応じて、中敷き鋼鉄板を積層することができる。本発明の脚部保護用半長靴の表底は、ＪＩＳ Ｔ ８１０１ ８.５の耐踏抜き試験において、釘が貫通したときの力が１,１００Ｎ以上であることが好ましい。
There is no particular limitation on the method for producing the rubber socks for the leg protection half boots of the present invention, for example, a socks made of mesh cloth is attached to the leg mold to form a mesh cloth on the entire inner surface, and a rubber compound is formed thereon. A rubber sock can be obtained by coating and heating and vulcanizing. As the socks made of mesh cloth, for example, commercially available cotton mesh socks, nylon mesh socks and the like can be used. Examples of the rubber compound include a compound in which sulfur, a vulcanization accelerator, a filler and the like are added to raw rubber and kneaded.
There is no restriction | limiting in particular in the material of the upper of the boots for leg protection of this invention, For example, leather, a synthetic rubber, etc. can be mentioned. The material of the upper can be appropriately selected according to the use situation of the boots for protecting the leg. For example, when prevention of mechanical damage is important, use cowhide with chrome tanning or chrome tannin mixed tanning In the case where it is important to prevent the permeation of toxic gas, it is preferable to use butyl rubber having extremely low permeability to various gases. If necessary, a tip can be applied to protect the toes.
There are no particular restrictions on the material of the bottom of the boots for protecting leg portions of the present invention, and examples thereof include oil-resistant synthetic rubber, foamed polyurethane, and multilayer combinations thereof. An insole steel plate can be laminated on the outsole as required. It is preferable that the front bottom of the leg protection half boots of the present invention has a force of 1,100 N or more when the nail penetrates in the step-out resistance test of JIS T 8101 8.5.
以下に、実施例を挙げて本発明をさらに詳細に説明するが、本発明はこれらの実施例によりなんら限定されるものではない。
実施例１
脚型に、寸法２４〜２６ｃｍの綿メッシュ靴下（黒）を装着した。ブチルゴム［日本ブチル(株)、Ｂｕｔｙｌ ２６８］１００重量部、亜鉛華３重量部、硫黄１.７５重量部、ステアリン酸１重量部、オイルファーネスブラック５０重量部及びテトラメチルチウラムジスルフィド１重量部を混練して、ブチルゴム配合物を調製し、脚型に装着した綿メッシュ靴下の上に、厚さ０.８ｍｍにコーティングした。１５０℃で４０分間加硫して、脚部保護用半長靴のゴム靴下を完成し、脚型から取り外した。
アクリロニトリル結合量３５モル％のアクリロニトリルブタジエンゴム１００重量部、シリカ４０重量部、フタル酸ジ(２−エチルヘキシル)５重量部、酸化亜鉛５重量部、ステアリン酸２重量部、２,２,４−トリメチル−１,２−ジヒドロキノリン重合体２重量部、２−ベンゾチアゾリルジスルフィド１.５重量部、テトラメチルチウラムジスルフィド０.５重量部及び硫黄１.５を混練して、アクリロニトリルブタジエンゴム配合物を調製し、１７０℃で４分間プレス成形して、サイズ２５.５ｃｍで、最も薄い部分の厚さが２.５ｍｍのリップル底つき表底接地部を得た。厚さ１.０ｍｍの発泡ポリウレタンシート、厚さ０.２ｍｍの鋼板及び厚さ０.８ｍｍのブチルゴムシートを、表底接地部の形状に切断し、この順に積層して接着し、半長靴の表底を得た。得られた表底に、ゴム靴下の作製に用いたブチルゴム配合物を用いて、厚さ１.６ｍｍの甲部と胴部を形成し、靴丈２８.０ｃｍの半長靴を得た。
上記のゴム靴下の底部と、足首部の幅２０ｍｍの円周部を、ゴム糊を用いて半長靴の内側に接着し、脚部保護用半長靴を完成した。この脚部保護用半長靴について、着用試験を行った。ゴム靴下の口に爪先を差し込み、両手で口を持って引き上げると、滑らかに靴下を着用することができ、同時に半長靴がゴム靴下に引かれて引き上げられ、簡単に脚部保護用半長靴を履くことができた。脚部保護用半長靴の着用を開始してから、両脚に履き終えるまでに要した時間は、１５秒であった。
Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.
Example 1
A cotton mesh sock (black) having a size of 24 to 26 cm was attached to the leg mold. 100 parts by weight of butyl rubber [Nippon Butyl Co., Butyl 268], 3 parts by weight of zinc white, 1.75 parts by weight of sulfur, 1 part by weight of stearic acid, 50 parts by weight of oil furnace black and 1 part by weight of tetramethylthiuram disulfide A butyl rubber formulation was then prepared and coated to a thickness of 0.8 mm on a cotton mesh sock fitted to the leg. The rubber socks for the leg protection half boots were completed by vulcanization at 150 ° C. for 40 minutes and removed from the leg mold.
100 parts by weight of acrylonitrile butadiene rubber having an acrylonitrile bond of 35 mol%, 40 parts by weight of silica, 5 parts by weight of di (2-ethylhexyl) phthalate, 5 parts by weight of zinc oxide, 2 parts by weight of stearic acid, 2,2,4-trimethyl 1,2-dihydroquinoline polymer 2 parts, 2-benzothiazolyl disulfide 1.5 parts, tetramethylthiuram disulfide 0.5 parts and sulfur 1.5 And press-molded at 170 ° C. for 4 minutes to obtain a grounded bottom portion with a ripple bottom having a size of 25.5 cm and a thickness of the thinnest portion of 2.5 mm. A foamed polyurethane sheet with a thickness of 1.0 mm, a steel sheet with a thickness of 0.2 mm, and a butyl rubber sheet with a thickness of 0.8 mm are cut into the shape of the ground contact portion of the bottom, laminated in this order, and bonded together. Got the bottom. Using the butyl rubber compound used for the production of the rubber socks on the obtained outsole, an instep part and a torso part having a thickness of 1.6 mm were formed to obtain a half-length boot having a shoe length of 28.0 cm.
The bottom part of the rubber socks and the circumference part of the ankle part with a width of 20 mm were adhered to the inside of the half boots using rubber glue to complete the leg protection half boots. A wearing test was conducted on the leg protection half boots. If you insert your toes into the mouth of the rubber socks and pull it up with both hands, you can wear the socks smoothly, and at the same time the half boots are pulled up by the rubber socks and you can easily wear the leg boots I was able to wear it. The time taken from the start of wearing the leg protection boots to the end of both legs was 15 seconds.
比較例１
脚型に綿メッシュ靴下を装着しなかった以外は、実施例１と同様にして、ブチルゴムのみからなるゴム靴下を作製した。このゴム靴下と、実施例１で作製したサイズ２５.５ｃｍ、靴丈２８.０ｃｍの半長靴とを用いて、着用試験を行った。
ゴム靴下の口に爪先を差し込み、両手で口を持って引っ張っても、足の３分の１までしか入らなかったので、爪先からゴム靴下を反転させながら着用した。両脚にゴム靴下を着用するために要した時間は、１分２０秒であった。
次いで、ゴム靴下を着用した足を半長靴に入れようとしたが、ゴム同士が滑らないために、足を半長靴に入れることができなかった。半長靴の胴部を反転させたが、ゴム靴下より厚いために取り扱いにくく、半長靴の甲部は表底が付いているために反転させることができず、半長靴を履くことは極めて困難であった。悪戦苦闘の末に、３２分を要してようやく両脚を半長靴の中に収めたが、ゴム靴下に皺や引きつれがある感じで、安定した履き心地ではなかった。
Comparative Example 1
A rubber sock made only of butyl rubber was prepared in the same manner as in Example 1 except that the cotton mesh sock was not attached to the leg mold. A wearing test was conducted using this rubber sock and the half-length shoe having a size of 25.5 cm and a shoe length of 28.0 cm produced in Example 1.
I inserted my toes into the mouth of a rubber sock and pulled it with both hands, and only one third of my foot was inserted, so I wore it while flipping the rubber sock from the toe. The time required to wear the rubber socks on both legs was 1 minute 20 seconds.
Next, an attempt was made to put a foot wearing rubber socks in a half-boot, but because the rubber did not slip, the foot could not be put in the half-boot. The trunk of the boots was inverted, but it was difficult to handle because it was thicker than the rubber socks, and the upper part of the boots could not be inverted because of the outsole, making it very difficult to wear the boots. there were. After struggling, it took 32 minutes to put both legs in half boots, but the rubber socks seemed to have heels and pulling, so it was not stable.
本発明の脚部保護用半長靴は、その内側に備えられたゴム靴下の着用と同時に一つの動作で迅速に履くことができるので、緊急事態が発生した場合であっても、ゴム靴下と半長靴を着用して速やかに出動することができる。 Since the rubber boots for protecting the leg of the present invention can be quickly put on in one operation simultaneously with the wearing of the rubber socks provided on the inside thereof, even if an emergency occurs, the rubber socks and the half boots can be worn. Wearing boots can be dispatched promptly.
１ 半長靴
２ ゴム靴下
３ 内側
４ 底部
５ 足首部
６ 中間部
７ 上部
1 Half boots 2 Rubber socks 3 Inside 4
Claims (7)
The method for producing a boot for protecting leg portions according to any one of claims 4 to 6, wherein an insole steel plate is laminated on the bottom of the boot.
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