JP2007040333A - Duct hose - Google Patents

Duct hose Download PDF

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Publication number
JP2007040333A
JP2007040333A JP2005222609A JP2005222609A JP2007040333A JP 2007040333 A JP2007040333 A JP 2007040333A JP 2005222609 A JP2005222609 A JP 2005222609A JP 2005222609 A JP2005222609 A JP 2005222609A JP 2007040333 A JP2007040333 A JP 2007040333A
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Japan
Prior art keywords
resin
resin film
tape
resin tape
hose
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JP2005222609A
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JP4666610B2 (en
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Tetsuya Inagake
哲哉 稲掛
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Tigers Polymer Corp
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Tigers Polymer Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a duct hose capable of preventing impairing of strength of a resin film when adjacent side edges of the spirally wound resin film are joined by using a molten hard resin reinforcement body. <P>SOLUTION: The resin film is spirally wound to form a cylindrical body, and a molten resin tape is spirally wound over the adjacent side edges of the resin film to be thermally fused, connected and integrated with the resin film. The molten resin tape is composed of a thin soft resin tape directly heat-sealed to the resin film, and a thick hard resin tape heat-sealed to an outer side of the soft resin tape. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、屈曲自在に配管できるフレキシブルなダクトホースに関し、殊に、超軽量で製造コストの低いダクトホースに関するものである。   The present invention relates to a flexible duct hose that can be bent freely, and more particularly to a duct hose that is ultralight and low in manufacturing cost.

従来、ダクトホースとして、ホース内に発泡樹脂層などの断熱層を設けた断熱ダクトホースが下記特許文献１で知られている。しかし、専ら低コスト化を目的として断熱層を形成しない非断熱性のダクトホースに対する需要も大きい。
特開平１１−１９０４９２号公報 Conventionally, as a duct hose, a heat insulating duct hose in which a heat insulating layer such as a foamed resin layer is provided in the hose is known in Patent Document 1 below. However, there is a great demand for a non-insulating duct hose that does not form a heat insulating layer exclusively for the purpose of cost reduction.
JP-A-11-190492

特許文献１においては、ホースの基本構造として、発泡樹脂層とその外面にラミネートした樹脂フィルムを含む積層テープを螺旋状に捲回して筒状体となし、上記樹脂フィルムの外側に溶融した硬質樹脂補強体を螺旋状に捲回して熱融着させることにより、上記筒状体を補強するとともに連結一体化するようにしている。他方、断熱層を形成しない非断熱性のダクトホースにあっては、単に樹脂フィルを螺旋状に捲回して筒状体を形成し、この筒状体の外側に溶融した硬質樹脂補強体を螺旋状に捲回し熱融着させてダクトホースを成形することが通常行われる。   In Patent Document 1, as a basic structure of a hose, a hard resin melted on the outside of the resin film is formed by spirally winding a laminated tape including a foamed resin layer and a resin film laminated on the outer surface thereof into a cylindrical body. The reinforcing body is spirally wound and heat-sealed to reinforce the tubular body and to be connected and integrated. On the other hand, in a non-insulating duct hose that does not form a heat insulating layer, a resin body is simply wound in a spiral shape to form a cylindrical body, and a molten hard resin reinforcement body is spiraled outside the cylindrical body It is usually performed to form a duct hose by winding in a shape and heat-sealing.

しかし、補強のためその断面積を比較的大きくした厚肉の硬質樹脂補強体を樹脂フィルムに直接熱融着させると、樹脂フィルムが硬質樹脂補強体の接合部分付近で過剰に溶融してしまい、当該付近での薄肉化や亀裂の虞を招く問題があった。本発明は、上記の問題を解決し、螺旋状に捲回した樹脂フィルムの隣接する側縁同士を溶融した硬質樹脂補強体で接合する際に、樹脂フィルムの強度を低下させないダクトホースを提供することを目的とする。   However, if a thick hard resin reinforcing body having a relatively large cross-sectional area for reinforcement is directly heat-sealed to the resin film, the resin film is excessively melted near the joint portion of the hard resin reinforcing body, There was a problem that caused the possibility of thinning and cracking in the vicinity. The present invention solves the above problems and provides a duct hose that does not reduce the strength of a resin film when joining adjacent side edges of a spirally wound resin film with a molten hard resin reinforcement. For the purpose.

本発明は、上記目的を達成するため、ダクトホースをつぎのように構成した。
すなわち、樹脂フィルムを螺旋状に捲回して筒状体を形成するとともに、上記樹脂フィルムの隣接する側縁同士間に跨って溶融樹脂テープを螺旋状に捲回し、上記樹脂フィルムに熱融着させて連結一体化した可撓性ホースであって、上記溶融樹脂テープを上記樹脂フィルムに直接熱融着する薄肉の軟質樹脂テープとこの軟質樹脂テープの外側に熱融着する厚肉の硬質樹脂テープとで構成したダクトホース。 In the present invention, in order to achieve the above object, a duct hose is configured as follows.
That is, the resin film is spirally wound to form a cylindrical body, and the molten resin tape is spirally wound between adjacent side edges of the resin film to be thermally fused to the resin film. A flexible hose that is connected and integrated, and is a thin-walled soft resin tape that directly heat-fuses the molten resin tape to the resin film, and a thick-walled hard resin tape that is heat-sealed to the outside of the soft resin tape. A duct hose composed of

本発明においては、まず硬質樹脂テープよりも軟質かつ薄肉の軟質樹脂テープを直接ホース主体を形成する樹脂フィルムに熱融着させてその側縁同士を連結一体化させ、つぎに軟質樹脂テープの外周に補強用の硬質樹脂テープを熱融着させてあり、軟質樹脂テープを緩衝層として介在させることにより、補強用の硬質樹脂テープが樹脂フィルムに直接熱融着することを避けてホースを形成している。   In the present invention, first, a soft resin tape that is softer and thinner than a hard resin tape is directly heat-sealed to a resin film that forms a hose main body, and the side edges are connected and integrated, and then the outer periphery of the soft resin tape A hard resin tape for reinforcement is heat-sealed, and a soft resin tape is interposed as a buffer layer to prevent the hard resin tape for reinforcement from being directly heat-sealed to the resin film to form a hose. ing.

本発明によれば、樹脂フィルムで形成したホース壁にその強度を低下させることなく硬質樹脂補強体を熱融着により添着でき、超薄肉で軽量な割に強度の高い低コストのダストホースを得ることができる。   According to the present invention, a hard resin reinforcing body can be attached to a hose wall formed of a resin film by thermal fusion without reducing its strength, and an ultra-thin and light weight dust hose that is high in strength and low in cost. Obtainable.

以下、本発明の実施例を図面を参照して説明する。
図１は本発明のダクトホースの一部断面正面図、図２はその一部拡大断面図である。 Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a partially sectional front view of a duct hose of the present invention, and FIG. 2 is a partially enlarged sectional view thereof.

本発明のダクトホース１は、市販の高密度ポリエチレン（ＨＤＰＥ）フィルムなどをスリットした長尺の樹脂フィルムをその隣接する側縁同士を突合せ状にして螺旋状に捲回してホース壁２を形成し、ホース壁２の外周面にＥＶＡなどからなる軟質樹脂テープ３を螺旋状に捲回してホース壁２に熱融着して一体化させ、軟質樹脂テープ３の外側にＨＤＰＥなどの硬質樹脂テープ４を螺旋状に捲回して熱融着して一体化させて形成されている。   The duct hose 1 of the present invention forms a hose wall 2 by spirally winding a long resin film obtained by slitting a commercially available high-density polyethylene (HDPE) film with the adjacent side edges butting each other. A soft resin tape 3 made of EVA or the like is spirally wound around the outer peripheral surface of the hose wall 2 and thermally fused to the hose wall 2 to be integrated. A hard resin tape 4 such as HDPE is formed outside the soft resin tape 3. Are spirally wound and heat-sealed to be integrated.

上記軟質樹脂テープ３は、断面が薄い平板状であり、上記硬質樹脂テープ４よりも薄肉でかつ硬度の低い樹脂でホース壁２に熱融着できる材料で形成され、しかも硬質樹脂テープ４とも熱融着可能な材料が選択される。 The soft resin tape 3 has a flat plate shape with a thin cross section, is formed of a material that is thinner than the hard resin tape 4 and has a low hardness, and can be heat-sealed to the hose wall 2. A material that can be fused is selected.

上記のダクトホース１は、あらかじめスリットされた長尺の樹脂フィルムと押出成形した直後の軟質樹脂テープ３並びに硬質樹脂テープ４を同時に図示しないホース成形軸に螺旋状に捲回して成形され、樹脂フィルムはその隣接する側縁同士がほぼ当接するように捲回され、やや幅広で平板状の熱溶融状態の軟質樹脂テープ３が隣接する側縁同士間に跨る状態で樹脂フィルムの外面に添着されており、樹脂フィルムの各側縁がそれぞれ軟質樹脂テープ３と熱融着することを介して接合一体化され、軟質樹脂テープ３よりもやや幅が狭い底面部４aと外方に延びる凸部４bを有する硬質樹脂テープ４がホース壁２とは接触することなく軟質樹脂テープ３の外側に熱融着して接合一体化している。 The duct hose 1 is formed by winding a long resin film slit in advance, a soft resin tape 3 just after extrusion molding, and a hard resin tape 4 spirally around a hose molding shaft (not shown). Is wound so that its adjacent side edges are almost in contact with each other, and a slightly wide, flat plate-like heat-melt soft resin tape 3 is attached to the outer surface of the resin film in a state of straddling between the adjacent side edges. The side edges of the resin film are joined and integrated with each other by heat-sealing with the soft resin tape 3, and the bottom portion 4a having a slightly narrower width than the soft resin tape 3 and the convex portion 4b extending outward are provided. The hard resin tape 4 is heat-fused to the outside of the soft resin tape 3 without being in contact with the hose wall 2 and is integrally integrated.

本発明は上記実施例に限定されるものでなく、上記ホース壁を形成する樹脂フィルムはその隣接する側縁同士を若干オーバーラップさせて螺旋状に捲回してもよく、この場合でも、溶融樹脂テープにより樹脂フィルム同士が熱融着により連結一体化される。また、ホース壁を形成する樹脂フィルムが発泡樹脂層にラミネートされたもので断熱層が形成されるダクトホースにおいても、本発明の溶融樹脂テープを用いて樹脂フィルム同士を熱融着により連結一体化することができる。 The present invention is not limited to the above-described embodiment, and the resin film forming the hose wall may be wound spirally by slightly overlapping the adjacent side edges. The resin films are connected and integrated with each other by heat fusion. In addition, in duct hoses where a heat insulation layer is formed by laminating a resin film that forms a hose wall to a foamed resin layer, the resin films are joined and integrated by heat fusion using the molten resin tape of the present invention. can do.

本発明のダクトホースの一部断面正面図The partial cross-sectional front view of the duct hose of the present invention 本発明のダクトホースの一部拡大断面図Partial enlarged sectional view of the duct hose of the present invention

符号の説明Explanation of symbols

１ ダクトホース
２ ホース壁
３ 軟質樹脂テープ
４ 硬質樹脂テープ
４a 底面部
４b 凸部
1 Duct hose 2 Hose wall 3 Soft resin tape 4 Hard resin tape 4a Bottom part 4b Convex part

Claims (1)

樹脂フィルムを螺旋状に捲回して筒状体を形成するとともに、上記樹脂フィルムの隣接する側縁同士間に跨って溶融樹脂テープを螺旋状に捲回し、上記樹脂フィルムに熱融着させて連結一体化した可撓性ホースであって、上記溶融樹脂テープを上記樹脂フィルムに直接熱融着する薄肉の軟質樹脂テープとこの軟質樹脂テープの外側に熱融着する厚肉の硬質樹脂テープとで構成したことを特徴とするダクトホース。   A resin film is spirally wound to form a cylindrical body, and a molten resin tape is spirally wound between adjacent side edges of the resin film, and the resin film is thermally fused and connected. An integrated flexible hose comprising a thin-walled soft resin tape that directly heat-fuses the molten resin tape to the resin film and a thick-walled hard resin tape that is heat-sealed to the outside of the soft resin tape. A duct hose characterized by comprising.
JP2005222609A 2005-08-01 2005-08-01 Duct hose forming method Active JP4666610B2 (en)

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JP4666610B2 JP4666610B2 (en) 2011-04-06

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007157825A (en) * 2005-12-01 2007-06-21 Inoac Corp Electromagnetic shield tube and manufacturing method thereof
JP2009287770A (en) * 2008-04-28 2009-12-10 Tigers Polymer Corp Thermally insulated hose and method for producing the same

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0322191U (en) * 1989-07-13 1991-03-06
JPH09222183A (en) * 1996-02-16 1997-08-26 Tigers Polymer Corp Abrasive resistant complex hose
JPH10160062A (en) * 1996-11-22 1998-06-16 Tigers Polymer Corp Synthetic resin flexible pipe
JPH10227379A (en) * 1997-02-17 1998-08-25 Tigers Polymer Corp Flexible hose
JP2001182865A (en) * 1999-12-27 2001-07-06 Kana Flex Corporation Kk Heat insulated hose
JP2005155751A (en) * 2003-11-25 2005-06-16 Kanaflex Corporation Flexible hose

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0322191U (en) * 1989-07-13 1991-03-06
JPH09222183A (en) * 1996-02-16 1997-08-26 Tigers Polymer Corp Abrasive resistant complex hose
JPH10160062A (en) * 1996-11-22 1998-06-16 Tigers Polymer Corp Synthetic resin flexible pipe
JPH10227379A (en) * 1997-02-17 1998-08-25 Tigers Polymer Corp Flexible hose
JP2001182865A (en) * 1999-12-27 2001-07-06 Kana Flex Corporation Kk Heat insulated hose
JP2005155751A (en) * 2003-11-25 2005-06-16 Kanaflex Corporation Flexible hose

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007157825A (en) * 2005-12-01 2007-06-21 Inoac Corp Electromagnetic shield tube and manufacturing method thereof
JP2009287770A (en) * 2008-04-28 2009-12-10 Tigers Polymer Corp Thermally insulated hose and method for producing the same

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