JP2005201389A - Silicone reinforced hose for food - Google Patents

Silicone reinforced hose for food Download PDF

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JP2005201389A
JP2005201389A JP2004009392A JP2004009392A JP2005201389A JP 2005201389 A JP2005201389 A JP 2005201389A JP 2004009392 A JP2004009392 A JP 2004009392A JP 2004009392 A JP2004009392 A JP 2004009392A JP 2005201389 A JP2005201389 A JP 2005201389A
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hose
reinforcing yarn
cut surface
silicone
reinforcing
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Yoshikazu Nabeshima
義和 鍋嶋
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Toyox Co Ltd
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Toyox Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To prevent entry of foreign matter in a hose concurrently with execution of end treatment of a splicing yarn. <P>SOLUTION: In the silicone reinforced hose, a hose cutting plane 4 with exposed laminate of a splicing yarn 3 formed by fusible chemical fibers, an inside layer 1, and an outside layer 2 is heated up to the fusing temperature or higher of the splicing yarn 3, so as to fuse the end 3a of the splicing yarn 3 projecting from the hose cutting plane 4. By doing so, while the silicone reinforced hose is fused close to the root of the end 3a of the splicing yarn 3 to be contracted, a fused chemical fiber material intrudes in the gap of the splicing yarn 3, the inside layer 1 and the outside layer 2 to be buried. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、例えば食品工場などで使用される柔軟性及び耐圧性に優れた食品用シリコーン補強ホースに関する。
詳しくは、主成分がシリコーンゴムで成形された内層と外層との間に補強糸を巻き付けてなる食品用シリコーン補強ホースに関する。 The present invention relates to a silicone reinforced hose for foods that is excellent in flexibility and pressure resistance used in, for example, food factories.
More specifically, the present invention relates to a silicone reinforced hose for foods in which a reinforcing yarn is wound between an inner layer and an outer layer whose main component is formed of silicone rubber.

従来、この種のシリコーン補強ホースとして、シリコーンゴム等からなる内層及び外層と、これら両層の間に補強糸を円筒状に巻き付けて介在させたブレード層との計３層の構成層を有し、これら内層及び外層と同じ材料又はゴム系のシール材や接着剤等の材料でリング板状に形成された密封材の周辺部を加熱し、該密封材とそれに面するホース切断面の内層及び外層を溶融して接合させ、その後、これらを冷却硬化させることでホース切断面を密封するか、或いは加熱を必要としないゴム系のシール材や接着剤等の密封材や金属製の密封材でホース切断面を密封することにより、ホース内を流れる流体がホース切断面に接触することを防止すると共に、層間への流体の浸透を防止したものがある（例えば、特許文献１参照）。   Conventionally, this type of silicone reinforced hose has a total of three constituent layers: an inner layer and an outer layer made of silicone rubber, etc., and a blade layer in which a reinforcing thread is wound between both layers in a cylindrical shape. The periphery of the sealing material formed in the shape of a ring plate is heated with the same material as the inner layer and outer layer or a material such as a rubber-based sealing material or adhesive, and the inner layer of the hose cut surface facing the sealing material and The outer layer is melted and bonded, and then the hose cut surface is sealed by cooling and hardening, or a sealing material such as a rubber-based sealant or adhesive that does not require heating, or a metal sealant. By sealing the hose cut surface, there is one that prevents the fluid flowing through the hose from coming into contact with the hose cut surface and prevents the fluid from penetrating between layers (for example, see Patent Document 1).

特開２００３−１６６６８４号公報（第２−７頁、図１−６）Japanese Patent Laid-Open No. 2003-166684 (page 2-7, FIG. 1-6)

しかし乍ら、このような従来のシリコーン補強ホースでは、ホースとは別個にリング板状の密封材が必要になるが、ホースは使用目的に応じて外径や内径や肉厚寸法が異なるため、それに合わせて寸法の異なる密封材を多数用意しなければならず、これらの管理作業や選択作業が面倒で実現的でないという問題がある。
そこで、上述した密封材を使用せずにホース切断面を露出させたまま接続しても、該ホース切断面に流体が接触したことで発生する問題点の解決策が要望されていた。
また、シリコーン補強ホースをカッターやハサミなどで切断した場合、内層と外層は容易に切れるが、補強糸は切れ難くて、切断後の状態でホース切断面から補強糸の末端部が飛び出してしまう。
このようにホース切断面から補強糸の末端部が飛び出したまま配管接続した際には、この飛び出た補強糸の末端部に雑菌が発生して繁殖する恐れがあるため、例えば食品工場などの衛生面に気を遣うに場所には、衛生面の上から不安要素があった。
ところで、このようなホース切断面から飛び出した補強糸の末端部を一本ずつ、鋭利な刃物で確実に切断すれば、飛び出した末端部の根本近くから切れるが、切断した補強糸がホース切断面からホースの中に入り込んで食品に混入する恐れがある。
特に、内層と外層はシリコーンゴム製であるため、補強糸の切断後にホース全体が軸方向へ引っ張られたり内圧変化に伴って膨張するとシリコーンゴムは軸方向へ伸縮したり径方向へ膨張し易いが、補強糸の材質はシリコーンゴムの伸縮率に比べて著しく低く、これに加えてシリコーンゴムは離型性や潤滑性が高いから、ホースが伸縮や膨張を繰り返す度に補強糸が徐々にホース切断面から内部に移動してホース切断面に糸穴が開き易く、この糸穴が雑菌の発生原因となったり、流体の浸透原因となるばかりでなく、このような糸抜けした部分の耐圧性能が著しく低下するという問題があった。 However, in such a conventional silicone reinforced hose, a ring plate-like sealing material is required separately from the hose, but the hose has different outer diameter, inner diameter and wall thickness depending on the purpose of use. Accordingly, a large number of sealing materials having different dimensions must be prepared, and there is a problem that these management operations and selection operations are troublesome and impractical.
Therefore, there has been a demand for a solution to a problem that occurs when a fluid contacts the hose cut surface even if the hose cut surface is exposed without using the sealing material described above.
Further, when the silicone reinforcing hose is cut with a cutter or scissors, the inner layer and the outer layer can be easily cut, but the reinforcing yarn is difficult to cut, and the end portion of the reinforcing yarn protrudes from the hose cut surface after cutting.
In this way, when the pipe is connected with the end portion of the reinforcing thread protruding from the hose cut surface, there is a risk that germs may grow and propagate at the end portion of the protruding reinforcing thread. There was an anxiety factor in terms of hygiene in the places where care was taken.
By the way, if you cut the end part of the reinforcing yarn jumping out from the hose cut surface one by one with a sharp blade, you can cut from the base of the protruding end part. There is a risk of getting into the hose and mixing into food.
In particular, since the inner layer and the outer layer are made of silicone rubber, if the entire hose is pulled in the axial direction or expands with changes in internal pressure after the reinforcing yarn is cut, the silicone rubber easily expands and contracts in the axial direction or expands in the radial direction. The material of the reinforcement thread is remarkably lower than the expansion rate of silicone rubber. In addition, the silicone rubber has high releasability and lubricity, so the reinforcement thread gradually cuts the hose whenever the hose repeatedly expands and contracts. The thread hole is easy to open on the hose cut surface by moving from the surface to the inside, and this thread hole not only causes the generation of germs and the penetration of fluid, but also the pressure resistance performance of such a thread missing part. There was a problem of significant reduction.

本発明のうち請求項１記載の発明は、補強糸の端部処理を行いながら同時にホース内部への異物の浸入を防止することを目的としたものである。
請求項２記載の発明は、請求項１に記載の発明の目的に加えて、補強糸の端部処理とホース内部への異物の浸入防止を極めて簡単な作業で正確に行うことを目的としたものである。
請求項３記載の発明は、請求項１または２に記載の発明の目的に加えて、内層及び外層の熱劣化を心配することなく確実に補強糸の端部処理を行うことを目的としたものである。
請求項４記載の発明は、請求項１、２または３に記載の発明の目的に加えて、ホース切断面の糸穴や糸抜けの発生を防止することを目的としたものである。 The invention according to the first aspect of the present invention aims to prevent foreign matter from entering the hose while performing the end treatment of the reinforcing yarn.
In addition to the object of the invention described in claim 1, the invention described in claim 2 is intended to accurately perform end processing of the reinforcing yarn and prevention of foreign matter intrusion into the hose by an extremely simple operation. Is.
In addition to the object of the invention described in claim 1 or 2, the invention described in claim 3 is intended to reliably perform the end treatment of the reinforcing yarn without worrying about thermal deterioration of the inner layer and the outer layer. It is.
In addition to the object of the invention described in claim 1, 2 or 3, the invention described in claim 4 is intended to prevent the occurrence of a thread hole or a thread omission in the cut surface of the hose.

前述した目的を達成するために、本発明のうち請求項１記載の発明は、補強糸３を溶融可能な化学繊維で形成し、この補強糸３と内層１及び外層２との積層状態が露出するホース切断面４を、補強糸３の溶融温度以上に加熱して、該ホース切断面４から突出する補強糸３の末端部３ａを溶かしたことを特徴とするものである。
請求項２記載の発明は、請求項１記載の発明の構成に、前記ホース切断面４を、補強糸３の溶融温度以上に発熱した平坦な加熱盤５に接触させて、該ホース切断面４から突出する補強糸３の末端部３ａを加熱し溶かした構成を加えたことを特徴とする。
請求項３記載の発明は、請求項１または２記載の発明の構成に、前記ホース切断面４の加熱温度の上限を、内層１及び外層２の主成分であるシリコーンゴムの耐熱温度未満に設定した構成を加えたことを特徴とする。
請求項４記載の発明は、請求項１、２または３記載の発明の構成に、前記補強糸３を筒状にニット編みして層状に形成した構成を加えたことを特徴とする。
なお、本発明は、上述した請求項１〜４記載の食品用シリコーン補強ホースに限定されず、下記に示すような食品用シリコーン補強ホースの端面処理方法も含まれる。
即ち、この食品用シリコーン補強ホースの端面処理方法は、主成分がシリコーンゴムで成形された内層１と外層２との間に、溶融可能な化学繊維で形成された補強糸３を巻き付けてなる食品用シリコーン補強ホースの端面処理方法において、
前記補強糸３と内層１及び外層２との積層状態が露出するホース切断面４を、補強糸３の溶融温度以上に加熱するか、より詳しくは補強糸３の溶融温度以上（約２４０〜３５０℃、好ましくは約３００〜３５０℃）に発熱した平坦な加熱盤５に接触させるか又は圧接させることにより、該ホース切断面４から突出する補強糸３の末端部３ａを溶かしたことを特徴とする食品用シリコーン補強ホースの端面処理方法。 In order to achieve the above-mentioned object, the invention according to claim 1 of the present invention is such that the reinforcing yarn 3 is formed of a meltable chemical fiber, and the laminated state of the reinforcing yarn 3 and the inner layer 1 and the outer layer 2 is exposed. The hose cut surface 4 to be heated is heated to a temperature higher than the melting temperature of the reinforcing yarn 3 to melt the end portion 3a of the reinforcing yarn 3 protruding from the hose cut surface 4.
According to a second aspect of the present invention, in the configuration of the first aspect of the invention, the hose cut surface 4 is brought into contact with a flat heating panel 5 that generates heat at a temperature higher than the melting temperature of the reinforcing yarn 3. It is characterized in that a configuration in which the end portion 3a of the reinforcing yarn 3 protruding from is heated and melted is added.
The invention according to claim 3 sets the upper limit of the heating temperature of the hose cut surface 4 in the configuration of the invention according to claim 1 or 2 below the heat resistance temperature of the silicone rubber which is the main component of the inner layer 1 and the outer layer 2. It is characterized by adding the above-described configuration.
The invention according to claim 4 is characterized in that a configuration in which the reinforcing yarn 3 is knitted into a cylindrical shape and layered is added to the configuration of the invention according to claim 1, 2 or 3.
In addition, this invention is not limited to the silicone reinforcement hose for foodstuffs of Claims 1-4 mentioned above, The end surface processing method of the silicone reinforcement hose for foodstuffs as shown below is also included.
That is, the method for treating the end face of a silicone reinforced hose for food is a food product in which a reinforcing yarn 3 formed of a meltable chemical fiber is wound between an inner layer 1 and an outer layer 2 whose main component is formed of silicone rubber. In the method of treating the end face of the silicone reinforced hose for
The hose cut surface 4 where the laminated state of the reinforcing yarn 3 and the inner layer 1 and the outer layer 2 is exposed is heated to the melting temperature of the reinforcing yarn 3 or more specifically, the melting temperature of the reinforcing yarn 3 or more (about 240 to 350). The end portion 3a of the reinforcing yarn 3 protruding from the hose cutting surface 4 is melted by bringing it into contact with or pressure contact with a flat heating plate 5 that has generated heat at a temperature of about 300 to 350 ° C. A method for treating the end face of a silicone reinforced hose for food.

以上説明したように、本発明のうち請求項１記載の発明は、溶融可能な化学繊維で形成された補強糸３と内層１及び外層２との積層状態が露出するホース切断面４を、補強糸３の溶融温度以上に加熱して、該ホース切断面４から突出した補強糸３の末端部３ａを溶かすことにより、補強糸３の末端部３ａの根本近くまで溶けて収縮すると共に、この溶融した化学繊維材料が補強糸３と内層１及び外層２と隙間に入り込んで埋められる。
従って、補強糸３の端部処理を行いながら同時にホース内部への異物の浸入を防止することができる。
その結果、ホースとは別個にリング板状の密封材が必要になる従来のものに比べ、面倒な密封材の管理作業や選択作業が不要であるから実現性に優れ、しかもコストの低減化が図れる。 As described above, the invention according to claim 1 of the present invention reinforces the hose cut surface 4 where the laminated state of the reinforcing yarn 3 formed of the meltable chemical fiber and the inner layer 1 and the outer layer 2 is exposed. By heating the yarn 3 above the melting temperature of the yarn 3 to melt the end portion 3a of the reinforcing yarn 3 protruding from the hose cutting surface 4, the melted portion closes to the root of the end portion 3a of the reinforcing yarn 3 and shrinks. The obtained chemical fiber material enters the gaps between the reinforcing yarn 3 and the inner layer 1 and the outer layer 2 and is buried.
Accordingly, it is possible to prevent foreign matter from entering the hose while processing the end portion of the reinforcing yarn 3.
As a result, compared to conventional products that require a ring plate-like sealant separately from the hose, there is no need for troublesome management and selection work of the sealant, so it is highly feasible and the cost is reduced. I can plan.

請求項２の発明は、請求項１の発明の効果に加えて、ホース切断面４を補強糸３の溶融温度以上に発熱した平坦な加熱盤５に接触させて、該ホース切断面４から突出した補強糸３の末端部３ａを加熱し溶かすことにより、この溶融した化学繊維材料が、該補強糸３と内層１及び外層２との隙間に押し込まれて均一に埋められる。
従って、補強糸３の端部処理とホース内部への異物の浸入防止を極めて簡単な作業で正確に行うことができる。
その結果、補強糸３の端部処理を素早く行えて製造コストの低減が図れる。 In addition to the effect of the invention of claim 1, the invention of claim 2 projects from the hose cutting surface 4 by bringing the hose cutting surface 4 into contact with a flat heating panel 5 that generates heat above the melting temperature of the reinforcing yarn 3. By heating and melting the end portion 3 a of the reinforcing yarn 3, the molten chemical fiber material is pushed into the gap between the reinforcing yarn 3 and the inner layer 1 and the outer layer 2 to be uniformly filled.
Therefore, it is possible to accurately perform the end processing of the reinforcing yarn 3 and the prevention of the intrusion of foreign matter into the hose by a very simple operation.
As a result, the end portion of the reinforcing yarn 3 can be quickly processed and the manufacturing cost can be reduced.

請求項３の発明は、請求項１または２の発明の効果に加えて、ホース切断面４の加熱温度の上限を、内層１及び外層２の主成分であるシリコーンゴムの耐熱温度未満に設定することにより、ホース切断面４を加熱しても、シリコーンゴム製の内層１及び外層２は熱劣化することなく、該ホース切断面４から突出した補強糸３の末端部３ａのみが溶ける。
従って、内層１及び外層２の熱劣化を心配することなく確実に補強糸３の端部処理を行うことができる。
その結果、補強糸３の端部処理を誰にでも綺麗に行えて商品価値を高く維持できる。 In the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, the upper limit of the heating temperature of the hose cut surface 4 is set below the heat resistance temperature of the silicone rubber which is the main component of the inner layer 1 and the outer layer 2. Thus, even if the hose cut surface 4 is heated, the inner layer 1 and the outer layer 2 made of silicone rubber are not thermally deteriorated, and only the end portion 3a of the reinforcing yarn 3 protruding from the hose cut surface 4 is melted.
Therefore, the end portion of the reinforcing yarn 3 can be reliably processed without worrying about thermal degradation of the inner layer 1 and the outer layer 2.
As a result, the end portion of the reinforcing yarn 3 can be cleanly treated by anyone and the product value can be maintained high.

請求項４の発明は、請求項１、２または３の発明の効果に加えて、シリコーンゴムからなる内層１及び外層２がホースの軸方向へ伸縮したり径方向へ膨張することに伴って、筒状にニット編みされた補強糸３も同方向へ伸縮や膨張する。
従って、ホース切断面の糸穴や糸抜けの発生を防止することができる。
その結果、ホース切断面に発生した糸穴による雑菌の発生や流体の浸透を防止できると共に、糸抜けによる破裂を防止してホース全体の耐圧性能を高く維持できる。 In addition to the effects of the invention of claim 1, 2 or 3, the invention of claim 4 is accompanied by the expansion and contraction of the inner layer 1 and outer layer 2 made of silicone rubber in the axial direction of the hose or in the radial direction. Reinforcing yarn 3 knitted into a cylindrical shape also expands and contracts in the same direction.
Accordingly, it is possible to prevent the occurrence of thread holes and thread dropout on the hose cut surface.
As a result, it is possible to prevent generation of germs and fluid permeation due to the thread hole generated on the cut surface of the hose, and to prevent rupture due to thread drop and maintain high pressure resistance of the entire hose.

以下、本発明の一実施例を図面に基づいて説明する。
この実施例は、図１（ａ）（ｂ）に示す如く、食品用シリコーン補強ホースＨが、内層１と外層２との間に補強糸３を筒状にニット編みして層状に形成することにより、これら内層１及び外層２と補強糸３とが一体化され、該ホースＨの切断面４から突出した補強糸３の末端部３ａを加熱盤５で加熱して溶かす場合を示すものである。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
In this embodiment, as shown in FIGS. 1A and 1B, a silicone reinforcing hose H for food is formed into a layer by knitting a reinforcing thread 3 in a cylindrical shape between an inner layer 1 and an outer layer 2. Thus, the inner layer 1 and the outer layer 2 and the reinforcing yarn 3 are integrated, and the end portion 3a of the reinforcing yarn 3 protruding from the cut surface 4 of the hose H is heated and melted by the heating panel 5. .

上記内層１及び外層２は、その主成分が柔軟性に優れた熱加硫型シリコーンゴムで成形され、例えば特開平８−２０７１１０号公報に開示されるような押し出し成形装置によって、先ず内層１を押し出し成形した後に、その外周面に沿って編み機（図示せず）により後述する補強糸３を編み込み、更に該補強糸３の外側に外層２を押し出し成形して積層される。   The inner layer 1 and the outer layer 2 are molded from a heat-curing silicone rubber whose main component is excellent in flexibility. For example, the inner layer 1 is first formed by an extrusion molding apparatus as disclosed in JP-A-8-207110. After the extrusion molding, a reinforcing yarn 3 (to be described later) is knitted along the outer peripheral surface by a knitting machine (not shown), and the outer layer 2 is extruded and laminated outside the reinforcing yarn 3.

この補強糸３は、例えばポリエステル繊維やナイロン繊維などの合成繊維又はレーヨン繊維などの再生繊維などを含んで加熱により溶融する化学繊維（人造繊維）であり、上記ホースＨの軸方向へ連続する縦編み列３ｂ…と、これに交差してホースＨの周方向へ連続する横編み列３ｃ…とを、夫々等間隔毎に略Ｕ字形に折り曲げて、相互に伸縮自在に編み込んでいる。   The reinforcing yarn 3 is a chemical fiber (artificial fiber) that is melted by heating, including, for example, synthetic fibers such as polyester fibers and nylon fibers, or regenerated fibers such as rayon fibers, and the longitudinal direction continuous in the axial direction of the hose H. The knitting rows 3b ... and the weft knitting rows 3c ... that intersect with the knitting rows 3b and continue in the circumferential direction of the hose H are bent into a substantially U shape at equal intervals, and are knitted in a mutually stretchable manner.

そして、これら縦編み列３ｂ…及び横編み列３ｃ…の編み込み方向は、縦編み列３ｂ…をホースＨの軸方向と平行にすると共に、これに対して横編み列３ｃ…を直交させるように編み込むか、或いは図示せる如く、上記ホースＨのねじれに対して縦編み列３ｂ…及び横編み列３ｃ…に作用する力が釣り合うように、上記ホースＨの軸方向から所定角度に傾斜させて螺旋状に巻き付ける。   The warp knitting rows 3b ... and the weft knitting rows 3c ... are knitted in a direction so that the warp knitting rows 3b ... are parallel to the axial direction of the hose H, and the weft knitting rows 3c ... As shown in the figure, the hose H is twisted at a predetermined angle from the axial direction of the hose H so that the forces acting on the warp knitting rows 3b. Wrap it in a shape.

図示例の場合には、縦編み列３ｂ…を上記ホースＨの軸方向に対し適宜角度で傾斜させて螺旋状に編み込むと共に、該縦編み列３ｂ…に対して横編み列３ｃ…を略直交するように編み込んでいる。
これら縦編み列３ｂ…と横編み列３ｃ…の交差角度は、図示した略直角以外に適宜角度に傾斜させても良い。 In the case of the illustrated example, the warp knitting row 3b is inclined at an appropriate angle with respect to the axial direction of the hose H and is knitted in a spiral shape, and the weft knitting row 3c is substantially orthogonal to the warp knitting row 3b. Weaving to do.
The intersecting angle between the warp knitting rows 3b ... and the weft knitting rows 3c ... may be inclined at an appropriate angle other than the substantially right angle shown.

また、上述したシリコーン補強ホースＨを必要長さに切断する場合には、例えばカッターやハサミなどを使用するが、内層１と外層２は容易に切れるものの補強糸３は切れ難く、鋭利な刃物を使用しても、図１（ａ）に示す如く、このホースＨの切断面４から該補強糸３の末端部３ａが飛び出してしまう。   Further, when the above-described silicone reinforcing hose H is cut to a required length, for example, a cutter or scissors is used. Even if it is used, as shown in FIG. 1A, the end portion 3 a of the reinforcing yarn 3 protrudes from the cut surface 4 of the hose H.

このような場合には、上記ホース切断面４を、前記補強糸３の溶融温度以上に加熱して、該ホース切断面４から突出した補強糸３の末端部３ａを溶かす。
その方法の一例としては、上記ホース切断面４を、補強糸３の溶融温度以上に発熱した平坦な加熱盤５に接触又は好ましくは圧接させることで、該ホース切断面４から突出した補強糸３の末端部３ａを加熱して溶かす。 In such a case, the hose cutting surface 4 is heated to a temperature higher than the melting temperature of the reinforcing yarn 3 to melt the end portion 3 a of the reinforcing yarn 3 protruding from the hose cutting surface 4.
As an example of the method, the reinforcing thread 3 protruding from the hose cutting surface 4 is brought into contact with or preferably pressed against the flat heating panel 5 that generates heat above the melting temperature of the reinforcing thread 3. The end portion 3a is heated and melted.

具体的に説明すれば、上記加熱盤５とは、内蔵した電気ヒータ（図示せず）に通電することにより、平坦な加熱面５ａを設定温度まで上昇させ維持する従来周知構造の電気加熱盤であり、前記ホース切断面４から突出した補強糸３の末端部３ａを溶かすために使用する場合には、該加熱面５ａの発熱温度を補強糸３の溶融温度である約２４０℃以上に設定している。   Specifically, the heating panel 5 is an electric heating panel having a conventionally known structure that raises and maintains the flat heating surface 5a up to a set temperature by energizing a built-in electric heater (not shown). Yes, when used for melting the end portion 3a of the reinforcing yarn 3 protruding from the hose cutting surface 4, the heating temperature of the heating surface 5a is set to about 240 ° C. or more, which is the melting temperature of the reinforcing yarn 3. ing.

また、ホース切断面４の加熱温度の上限は、内層１及び外層２の主成分である熱加硫型シリコーンゴムの耐熱温度、例えば約３５０℃未満に設定する。
即ち、加熱盤５の加熱面５ａは、約２４０〜３５０℃の発熱温度を設定するが、ホース切断面４から突出した補強糸３の末端部３ａを速やかに溶かすために約３００〜３５０℃に設定することが好ましい。 Further, the upper limit of the heating temperature of the hose cut surface 4 is set to a heat resistant temperature of the heat vulcanizing silicone rubber, which is the main component of the inner layer 1 and the outer layer 2, for example, less than about 350 ° C.
That is, the heating surface 5a of the heating panel 5 sets an exothermic temperature of about 240 to 350 ° C., but is about 300 to 350 ° C. in order to quickly melt the end portion 3a of the reinforcing yarn 3 protruding from the hose cutting surface 4. It is preferable to set.

次に、斯かる食品用シリコーン補強ホースＨの作用について説明する。
ホース切断面４から突出した補強糸３の末端部３ａを、その溶融温度以上に加熱して溶かすことにより、該補強糸３の末端部３ａの根本近くまで溶けて収縮すると共に、この溶融した化学繊維材料が補強糸３と内層１及び外層２と隙間に入り込んで埋められる。
その結果、補強糸３の端部処理を行いながら同時にホースＨ内部への異物の浸入を防止することができる。 Next, the action of the food-grade silicone reinforced hose H will be described.
By heating and melting the end portion 3a of the reinforcing yarn 3 protruding from the hose cut surface 4 to a temperature equal to or higher than its melting temperature, it melts and shrinks to the vicinity of the base of the end portion 3a of the reinforcing yarn 3, and this melted chemical The fiber material enters the gap between the reinforcing yarn 3, the inner layer 1, and the outer layer 2, and is buried.
As a result, it is possible to prevent foreign matter from entering the hose H while processing the end portion of the reinforcing yarn 3.

更に本実施例の場合には、上記ホース切断面４を、補強糸３の溶融温度、例えば約２４０℃以上に発熱した平坦な加熱盤５に接触又は圧接させれば、該補強糸３の末端部３ａが加熱して溶け、この溶融した化学繊維材料が、該補強糸３と内層１及び外層２との隙間に押し込まれて均一に埋められる。
その結果、補強糸３の端部処理とホースＨ内部への異物の浸入防止を極めて簡単な作業で正確に行えるという利点がある。 Furthermore, in the case of the present embodiment, if the hose cut surface 4 is brought into contact or pressure contact with a flat heating panel 5 that generates heat at a melting temperature of the reinforcing yarn 3, for example, about 240 ° C. or more, the end of the reinforcing yarn 3 is obtained. The portion 3a is heated and melted, and the molten chemical fiber material is pushed into the gap between the reinforcing yarn 3 and the inner layer 1 and the outer layer 2 to be uniformly filled.
As a result, there is an advantage that the end processing of the reinforcing yarn 3 and the prevention of the invasion of foreign matter into the hose H can be accurately performed by an extremely simple operation.

また、ホース切断面４の加熱温度の上限を、内層１及び外層２の主成分であるシリコーンゴムの耐熱温度、例えば約３５０℃未満に設定すれば、ホース切断面４を加熱しても、熱加硫型シリコーンゴム製の内層１及び外層２は熱劣化することなく、該ホース切断面４から突出した補強糸３の末端部３ａのみが溶ける。
その結果、内層１及び外層２の熱劣化を心配することなく確実に補強糸３の端部処理を行えるという利点がある。 Further, if the upper limit of the heating temperature of the hose cut surface 4 is set to the heat resistant temperature of the silicone rubber that is the main component of the inner layer 1 and the outer layer 2, for example, less than about 350 ° C., even if the hose cut surface 4 is heated, The inner layer 1 and the outer layer 2 made of vulcanized silicone rubber are not thermally deteriorated, and only the end portion 3a of the reinforcing yarn 3 protruding from the hose cut surface 4 is melted.
As a result, there is an advantage that the end treatment of the reinforcing yarn 3 can be reliably performed without worrying about thermal degradation of the inner layer 1 and the outer layer 2.

また更に、前記補強糸３を筒状にニット編みして層状に形成すれば、シリコーンゴムからなる内層１及び外層２がホースの軸方向へ伸縮したり径方向へ膨張することに伴って、筒状にニット編みされた補強糸３も同方向へ伸縮や膨張する。
その結果、ホース切断面４の糸穴や糸抜けの発生を防止できるという利点がある。 Furthermore, if the reinforcing yarn 3 is knit knitted into a cylinder and formed into a layer, the inner layer 1 and the outer layer 2 made of silicone rubber expand and contract in the axial direction of the hose and expand in the radial direction. The reinforcing yarn 3 knitted into a shape also expands and contracts in the same direction.
As a result, there is an advantage that it is possible to prevent the occurrence of thread holes and thread loss in the hose cut surface 4.

尚、前示実施例では、内層１と外層２との間に補強糸３を筒状にニット編みして層状に形成することにより、これら内層１及び外層２と補強糸３とが一体化された場合を示したが、これに限定されず、例えば特開２００３−１６６６８４号公報に開示される如く、複数の補強糸３を螺旋状に巻き付けて格子状するなど、補強糸３の本数及び巻き付け形状は任意である。   In the previous embodiment, the inner layer 1 and the outer layer 2 and the reinforcing yarn 3 are integrated by forming the reinforcing yarn 3 between the inner layer 1 and the outer layer 2 in a cylindrical shape by knit knitting. However, the present invention is not limited to this. For example, as disclosed in Japanese Patent Application Laid-Open No. 2003-166684, the number of the reinforcing yarns 3 and the winding of the reinforcing yarns 3 such as a plurality of reinforcing yarns 3 are spirally wound to form a lattice. The shape is arbitrary.

また、前記ホース切断面４から突出した補強糸３の末端部３ａを、その溶融温度以上に発熱した加熱盤５に接触又は圧接させることにより加熱して溶かす場合を示したが、これに限定されず、同様な機能があれば他の方法であっても良い。   Moreover, although the case where the end part 3a of the reinforcing yarn 3 protruding from the hose cut surface 4 is heated and melted by being brought into contact with or pressed against the heating panel 5 that has generated heat above its melting temperature is shown, it is limited to this. Alternatively, other methods may be used as long as they have similar functions.

本発明の一実施例を示す食品用シリコーン補強ホースの斜視図であり、（ａ）は端面処理前の状態を一部切欠して示し、（ｂ）は端面処理後の状態を部分拡大して示している。BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of the silicone reinforcement hose for foodstuffs which shows one Example of this invention, (a) shows the state before an end surface process partially notched, (b) expands the state after an end surface process partially. Show.

符号の説明Explanation of symbols

Ｈ 食品用シリコーン補強ホース １ 内層
２ 外層 ３ 補強糸
３ａ 末端部 ３ｂ 縦編み列
３ｃ 横編み列 ４ ホース切断面
５ 加熱盤 ５ａ 加熱面 H Food Reinforced Silicone Reinforced Hose 1 Inner Layer 2 Outer Layer 3 Reinforcement Yarn 3a Terminal 3b Warp Knitting 3c Weft Knitting 4 Hose Cut Surface 5 Heating Panel 5a Heating Surface

Claims (4)

主成分がシリコーンゴムで成形された内層（１）と外層（２）との間に補強糸（３）を巻き付けてなる食品用シリコーン補強ホースにおいて、
前記補強糸（３）を溶融可能な化学繊維で形成し、この補強糸（３）と内層（１）及び外層（２）との積層状態が露出するホース切断面（４）を、補強糸（３）の溶融温度以上に加熱して、該ホース切断面（４）から突出する補強糸（３）の末端部（３ａ）を溶かしたことを特徴とする食品用シリコーン補強ホース。 In the silicone reinforcing hose for foods, in which the reinforcing yarn (3) is wound between the inner layer (1) and the outer layer (2), the main component of which is formed of silicone rubber,
The reinforcing yarn (3) is formed of a meltable chemical fiber, and the hose cut surface (4) from which the laminated state of the reinforcing yarn (3) and the inner layer (1) and the outer layer (2) is exposed is a reinforcing yarn ( 3) A silicone reinforced hose for food, wherein the end portion (3a) of the reinforcing yarn (3) protruding from the hose cut surface (4) is melted by heating to the melting temperature of 3) or higher. 前記ホース切断面（４）を、補強糸（３）の溶融温度以上に発熱した平坦な加熱盤（５）に接触させて、該ホース切断面（４）から突出する補強糸（３）の末端部（３ａ）を加熱し溶かした請求項１記載の食品用シリコーン補強ホース。 The hose cut surface (4) is brought into contact with a flat heating panel (5) that generates heat above the melting temperature of the reinforcing yarn (3), and the end of the reinforcing yarn (3) protruding from the hose cut surface (4) The silicone reinforced hose for foodstuffs of Claim 1 which heated and melt | dissolved the part (3a). 前記ホース切断面（４）の加熱温度の上限を、内層（１）及び外層（２）の主成分であるシリコーンゴムの耐熱温度未満に設定した請求項１または２記載の食品用シリコーン補強ホース。 The silicone reinforced hose for foodstuffs of Claim 1 or 2 which set the upper limit of the heating temperature of the said hose cut surface (4) below the heat-resistant temperature of the silicone rubber which is a main component of an inner layer (1) and an outer layer (2). 前記補強糸（３）を筒状にニット編みして層状に形成した請求項１、２または３記載の食品用シリコーン補強ホース。 The silicone reinforcing hose for foodstuffs according to claim 1, 2 or 3, wherein the reinforcing yarn (3) is knitted into a cylinder and formed into a layer.
JP2004009392A 2004-01-16 2004-01-16 Silicone reinforced hose for food Pending JP2005201389A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007198494A (en) * 2006-01-26 2007-08-09 Toyox Co Ltd End face structure for reinforcement hose, its end face treating method, and hose end face treating kit
JP2008272974A (en) * 2007-04-26 2008-11-13 Toyox Co Ltd Reinforced laminated hose
US20110073206A1 (en) * 2009-09-28 2011-03-31 Hyundai Motor Company Silicon hose integrated with sensor port and method for manufacturing the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007198494A (en) * 2006-01-26 2007-08-09 Toyox Co Ltd End face structure for reinforcement hose, its end face treating method, and hose end face treating kit
JP2008272974A (en) * 2007-04-26 2008-11-13 Toyox Co Ltd Reinforced laminated hose
US20110073206A1 (en) * 2009-09-28 2011-03-31 Hyundai Motor Company Silicon hose integrated with sensor port and method for manufacturing the same
US8833400B2 (en) * 2009-09-28 2014-09-16 Hyundai Motor Company Silicon hose integrated with sensor port and method for manufacturing the same

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