JP2004025752A - Multifunctional flexible hose made of pressure-resistant resin - Google Patents

Multifunctional flexible hose made of pressure-resistant resin Download PDF

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Publication number
JP2004025752A
JP2004025752A JP2002188658A JP2002188658A JP2004025752A JP 2004025752 A JP2004025752 A JP 2004025752A JP 2002188658 A JP2002188658 A JP 2002188658A JP 2002188658 A JP2002188658 A JP 2002188658A JP 2004025752 A JP2004025752 A JP 2004025752A
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Japan
Prior art keywords
layer
resin
flexible hose
fiber
pressure
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JP2002188658A
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Japanese (ja)
Inventor
Yuzo Fujii
藤井 佑三
Hideo Sasada
笹田 日出男
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FUJI KOATSU FLEXIBLE HOSE CO L
FUJI KOATSU FLEXIBLE HOSE CO Ltd
Original Assignee
FUJI KOATSU FLEXIBLE HOSE CO L
FUJI KOATSU FLEXIBLE HOSE CO Ltd
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Priority to JP2002188658A priority Critical patent/JP2004025752A/en
Publication of JP2004025752A publication Critical patent/JP2004025752A/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20Controlling water pollution; Waste water treatment

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multifunctional flexible hose made of a pressure-resistant resin having both flexibility and pressure resistance in relation to a transportation piping for such fluids and fluid substances as warm water, water, drinking water, fluid foods, medicines, toilet articles, organic solvents, ultrapure water, anti-freeze, oils (edible oils and hydraulic fluids), fuel oil and inks, and to a transportation piping for such gaseous fluids requiring high performance gas barrier properties as those used for medical purposes, agricultural and horticultural purposes, fuel purposes, industrial raw materials and the like. <P>SOLUTION: The multifunctional flexible hose made of the pressure-resistant resin which can cope with various performances for requirements can be economically and easily obtained by reinforcing the outside of a three-layered inner tube made of resins with a gas barrier resin, for example, as an intermediate layer with a fiber pressure-resistant braid as the fourth layer, and furthermore, providing a structure with an outer cover layer made of a resin as the fifth layer on the outer periphery. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は熱可塑性エラストマー樹脂・高ガスバリヤー性樹脂・補強繊維より構成された多目的用途向けガスバリヤー耐圧樹脂製フレキシブルホースに関するものである。
【0002】
【従来の技術】
現在、市場にて確認できる樹脂製フレキシブルホースは、構成する原料である熱可塑性エラストマーとして塩化ビニール系(TPVC)、ポリウレタン系(TPU)、ポリアミド系(TPA/TPEA)、ポリスチレン系(SDC)、ポリオレフィン系(TPO)、ポリエステル系(TPEE)等の熱可塑性エラストマー材料が主として用いられているが、その特徴として狭範囲の用途目的に限定した、物理的強度を主にに考慮した設計構造に重要性が置かれている。広範囲な多目的用途に使用可能で、尚且つ、ホース使用時の環境対策やホースの最終処分時の環境対策を考慮した樹脂製フレキシブルホースの存在は確認できていない。
【0003】
【発明が解決しようとする課題】
現在、市場にて流通している配管ホースは、原料に合成ゴムを用いたものが主流であり、広範囲な用途に使用されている。しかし、合成ゴム製ホースは主原料の合成ゴム自体にその化学構造上、NO ・SH・S・CF ・I・Br・CL・CN等の分子を有し、また、添加剤として加硫剤(硫黄・有機過酸化物等)、加硫促進剤、加工助剤、可塑剤、軟化剤、及び補強材・増量材等が配合設計された合成ゴムホースは、流動性食品・飲料水・超純水・食料油・燃料油等の輸送には不向きである。これは合成ゴムホースよりブリードまたはブルーミングによりゴム表面に析出した配合薬品が輸送中の流動体及び流動物を汚染する可能性が非常に大きい為である。また、合成ゴムホースの最終処分時、埋立処分では配合薬品等による土壌汚染の可能性があり、焼却処分では有害ガス発生による大気汚染の危険性がある。
【0004】
また現在市場に流通している熱可塑性エラストマーホースにおいて、軟質塩化ビニール系(TPVC)、ポリ塩化ビニリデン系(TVDC)、ポリウレタン系(TPU)、ポリアミド系(TPEA)、塩素化ポリエチレン系(T−CM)、フッ素ゴム系・フッ素樹脂系熱可塑性エラストマーが材料として主流であり、これらも廃棄時の最終処分では塩素ガス・シアンガス・ダイオキシン・環境ホルモン等の有毒ガスによる大気汚染や析出物による土中汚染の危険性がある。
【0005】
近年市場に環境対策材料として流通しているポリオレフィン系熱可塑性エラストマー(TPO)はポリプロピレン(PP)とオレフィン系ゴム(EPDM・IIR)とのポリマーアロイであるが、シャク解剤・加工助剤・加硫剤・加硫促進剤・軟化剤・可塑剤等の種々のゴム配合薬品が添加されており、これらの添加薬品のブリードやブルーミング現象による輸送流動体・流動物の汚染の危険性が考えられ飲食関係機器の配管には適さない。
【0006】
また、現在使用されている医療用ガス(酸素・窒素・二酸化炭素・ヘリウム・亜酸化窒素・及びこれらの混合ガス)用ホースアセンブリに使用されるフレキシブルホースの原料は主としてNBR等の合成ゴムが用いられている。NBR等の合成ゴムではガスバリヤー性能があまり良くない為、医療用ガスボンベの基バルブを開放したままにしておくと、短期間にボンベ内のガスが消失してしまうという報告もなされている。
【0007】
燃料油配管ホースにおいては屋内専用の配管ホースはあるが屋外でも使用可能な燃料油配管ホースは無く、原料が主として合成ゴムでおるために紫外線等によるゴム劣化が原因の為と考えられる。使用においてもゴム配合剤の一部が燃料油中にい溶出し、これが燃焼中のバーナーニードル部に灰分固着し燃焼阻害を起こすとの報告もある。
【0008】
このように配管ホース原料としては、配管ホース材料から析出する配合添加剤を含まず、輸送する流動体・流動物を汚染しない原料で、しかも最終処分時に有害物質が発生しない原料を用いて配管ホースを構成する必要がある。
【0009】
また、輸送する流動体・流動物より発生する揮発性ガスを大気中に放出させない。更に、輸送する流動体、流動物が配管ホース内で滞留中、配管ホース外部の空気中酸素が逆透過混入し、ホース内の物質の変質を防ぐガスバリヤー機能を併せ持った安価で経済的な多機能性耐圧樹脂製フレキシブルホースを提供しようとするものである。
【0010】
【課題を解決するための手段】
本発明は上記課題を解決するもので、多層ホース構成材料の各層に用いる材料は、接着・融着により各層が溶接できる機能を有し、且つ、種々の汚染原因になる可能性の高い軟化剤・可塑剤等の添加物を含まない無公害型で各国食品衛生規格に合格した熱可塑性エラストマー材料が好ましい。
【0011】
【実施例】
本発明の多機能性耐圧樹脂製フレキシブルホースの構造を図面に基づいて説明すると、図1は符号1で示す多機能性耐圧フレキシブルホースの構造例を示したものでは11はインナーチューブ内層,12はインナーチューブ中間層,13はインナーチューブ外層,14は補強繊維ブレード層および15はアウターカバー層をそれぞれ示す。
図1における合成樹脂製フレキシブルホースは、複数層構造により構成され、各層毎に目的機能に応じた材料により構成されている。また各層の熱可塑性エラストマー材料や補強繊維等はその各層が全て溶接され一体化されている。これによりホースの最小曲げによるキンク特性・引張強度・耐圧強度等の物理特性の向上を得ることができる。
また、広範囲の用途分野で使用可能としたその構造は、ホース性能・加工性・製造コストの面からみて5層で構成されているのが理想的である。
【0012】
図1におけるホース構造の各層毎の材料について説明する。
インナーチューブ内層11、インナーチューブ中間層12、インナーチューブ外層13で構成されるインナーチューブの最適な合成樹脂材料は、
「インナーチューブ11」
ポリオレフィン樹脂(PE/PP/ポリブテン)、ポリメチルペンテン−1(PMP)、ポリエステルエラストマー(TPEE)、スチレン系エラストマー(SBS/SIS/SEBS/SEPS)、エチレン系エラストマー(TEEA/TEVA/TEMA)、酸無水物基を有するエチレン系共重合体(日本ポリオレフィン社製レクスパールET等)、ポリオレフィン系熱可塑性架橋樹脂(日本ポリオレフィン社製レクスパールRC等)、無水マレイン酸をグラフトした変性ポリオレフィン樹脂(MAH−g−PE/MAH−g−PP)。
及び、これらの合成樹脂材料を任意に組み合せたポリマーアロイ組成物が好ましい。
「インナーチューブ12」
ガスバリヤー性・溶剤バリヤー性・耐油性・耐有機溶剤性・保香性等の優れた機能特性を有した、エチレンビニルアルコール共重合樹脂(EVOH)、エチレン・アクリル酸エチル共重合樹脂(TEEA)、エチレン−メチルアクリレート共重合樹脂(TEMA)が好ましい。
「インナーチューブ13」
ポリオレフィン樹脂(PE/PP/ポリブテン)、ポリメチルペンテン−1(PMP)、ポリエステルエラストマー(TPEE)、スチレン系エラストマー(SBS/SIS/SEBS/SEPS)、エチレン系エラストマー(TEEA/TEVA/TEMA)、酸無水物基を有するエチレン系共重合体(日本ポリオレフィン社製レクスパールET等)、ポリオレフィン系熱可塑性架橋樹脂(日本ポリオレフィン社製レクスパールRC等)、無水マレイン酸をグラフトした変性ポリオレフィン樹脂(MAH−g−PE/MAH−g−PP)。
及び、これらの合成樹脂を任意に組み合せたポリマーアロイ組成物が好ましい。
【0013】
「補強繊維ブレード層14」
フレキシブルホースの耐圧力性・引張強度等の物理強度特性を確保するための補強層であり、ポリエステル繊維、ポリエチレン繊維、ポリアリレート繊維、炭素繊維、ガラス繊維、金属繊維等の補強ブレード材料が好ましい。
【0014】
「アウターカバー層15」
ポリオレフィン樹脂(PE/PP/ポリブテン)、ポリメチルペンテン−1樹脂(PMP)、ポリエステルエラストマー(TPEE)、スチレン系エラストマー(SBS/SIS/SEBS/SEPS)、エチレン系エラストマー(TEEA/TEVA/TEMA)、酸無水物基を有するエチレン系共重合体(日本ポリオレフィン社製レクスパールET等)、ポリオレフィン系熱可塑性架橋樹脂(日本ポリオレフィン社製レクスパールRC等)、無水マレイン酸をグラフトした変性ポリオレフィン樹脂(MAH−g−PE/MAH−g−PP)。
及び、これらの合成樹脂を任意に組み合せたポリマーアロイ組成物が好ましい。
【0015】
次に本発明の多機能性耐圧樹脂製フレキシブルホースの製造方法について図1の構造図例を用いて説明する。
内層11、中間層12、外層13の3層で構成される3層インナーチューブは、多層押手成形にて同時に3層チューブを一体成形する共押出成形法(多層押出成形法)が各層毎の溶接強度及び経済性からみて最適である。
例えば、内層11の材料にポリエチレン(PE:LLDPE)、中間層12の材料にエチレンビニルアルコール(EVOH)、外層13の材料にポリエチレン(PE:LLDPE)を用いた3層インナーチューブを得るには、3台の押出機で個々に溶融軟化させた個々の材料を1個の共通ダイに送り込み一体化した3層インナーチューブを成形する。
【0016】
次に、3層インナーチューブに物理強度を向上させる目的でブレーダーマシーンを用いてポリエチレン繊維で編組し、補強ブレード層14を形成する。
【0017】
次に、ポリエチレン樹脂補強ブレード層14を形成した3層インナーチューブに、ポメチルペンテン−1樹脂(PMP)材料を用いて、クロスヘッドダイを装着した押出被覆成形装置にてアウターカバー層15を形成する。
【0018】
上記の作業により全ての層が溶接一体化された、物理強度・耐候性・ガスバリヤー性・溶剤バリヤー性・耐水性・耐温水性・耐油性・耐有機溶剤性・保香性・食品衛生性等の優れた特性を持った広範囲の業種分野にて使用できる多機能性耐圧樹脂製フレキシブルホースを安易に経済的に得ることができる。
【0019】
また、上記の同じ成形方法を用い、請求項2、3、4の材料を任意に選定し組み合せることにより、より高度な仕様条件を必要とする分野での用途にも安易に対応でき、地球環境対策に配慮した、輸送流体を汚染しない多機能性耐圧樹脂製フレキシブルホースを安易に経済的に得ることができる。
【0020】
【発明の効果】
以上課題を解決するための手段で説明した方法により得られた本発明の多機能性耐圧樹脂製フレキシブルホースは、
(1)食品衛生性・耐水性・耐候性・ガスバリヤー性・溶剤バリヤー性・耐溶剤性・保香性そして耐圧・引張強度等の物理強度に優れた高性能な特性を持つ本配管用フレキシブルホースは、水・温水・飲料水・流動性食品・薬品・化粧品・有機溶剤・超純水・作動油・食料油・燃料油・インク・ペイント等の流動体及び流動物、そして空気・窒素・酸素・水素・ヘリウム・二酸化炭素・亜酸化窒素(笑気ガス)・アセチレンガス・プロパンガス・天然ガス・エチレン・ブタン等の医療用、溶接、燃料、有機合成化学工業用原料に用いられる気体の輸送配管に使用できる。
(2)各種業界分野の用途しては、給湯・給水機器、衛生機器、建築物の床暖房機器、飲料・食料用機器、医療機器、水処理機器、油圧・空圧機器、有機溶剤・超純水洗浄機器、空調機器、薬品関連機器、燃料油輸送機器、OA機器、工作機械、工業用設備、農業用温床機器、農業用・園芸用温室暖房機器等の広い分野での使用ができ、且つ、周辺環境を汚染させない機能と配管ホースの清潔さ及び自由な着色性による取り付け機器商品のイメージアップが期待できる。
(3)大気環境破壊の原因となる塩素化合物(塩素系フロンガス/塩素系有機溶剤)・有機溶剤から揮発する有害ガスや土壌汚染の原因となるガソリン・軽油・灯油等の燃料油から発生する揮発性ガス。このような大気・土壌汚染につながるような有害ガスをバリヤーする機能を有し、尚且つ本発明の樹脂製フレキシブルホースは自体の最終処分時にダイオキシン・環境ホルモン・塩素ガス・青酸ガス等の有害ガスを発生させない原材料で構成されており生物と地球環境に配慮した配管製品である。
【図面の簡単な説明】
【図1】この発明に係るフレキシブルホースの説明図である。
【符号の説明】
11 インナーチューブ内層
12 インナーチューブ中間層
13 インナーチューブ外層
14 補強繊維ブレード層
15 アウターカバー層
[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a gas barrier pressure-resistant resin flexible hose for a multipurpose use, which is composed of a thermoplastic elastomer resin, a high gas barrier resin, and a reinforcing fiber.
[0002]
[Prior art]
At present, resin-made flexible hoses that can be confirmed on the market include vinyl chloride-based (TPVC), polyurethane-based (TPU), polyamide-based (TPA / TPEA), polystyrene-based (SDC), and polyolefin thermoplastic elastomers as constituent materials. Thermoplastic elastomer materials such as polyester-based (TPO) and polyester-based (TPEE) are mainly used, but their features are limited to a narrow range of application purposes and are important for a design structure mainly considering physical strength. Is placed. It has not been confirmed that there is a flexible hose made of resin that can be used for a wide range of multipurpose applications and that takes into account environmental measures at the time of using the hose and environmental measures at the time of final disposal of the hose.
[0003]
[Problems to be solved by the invention]
Currently, most of the pipe hoses on the market that use synthetic rubber as a raw material are used for a wide range of applications. However, a synthetic rubber hose has molecules such as NO 2 , SH, S, CF 2 , I, Br, CL, and CN in the chemical structure of the synthetic rubber itself as a main raw material. Rubber hoses, which are formulated with additives (sulfur, organic peroxides, etc.), vulcanization accelerators, processing aids, plasticizers, softeners, reinforcing materials and extenders, are designed for fluid foods, drinking water, super It is not suitable for transportation of pure water, food oil, fuel oil, etc. This is because the compounded chemical deposited on the rubber surface by bleeding or blooming from the synthetic rubber hose is very likely to contaminate the fluid and the fluid during transportation. In addition, at the time of final disposal of synthetic rubber hose, there is a possibility of soil contamination due to compounding chemicals in landfill disposal, and there is a risk of air pollution due to generation of harmful gas in incineration disposal.
[0004]
In addition, among thermoplastic elastomer hoses currently on the market, soft vinyl chloride (TPVC), polyvinylidene chloride (TVDC), polyurethane (TPU), polyamide (TPEA), and chlorinated polyethylene (T-CM) ) And fluoroelastomer-based thermoplastic elastomers are the mainstream materials, and in the final disposal at the time of disposal, these also cause air pollution by toxic gases such as chlorine gas, cyanogen gas, dioxin, environmental hormones, and soil pollution by deposits. There is a danger.
[0005]
In recent years, polyolefin-based thermoplastic elastomers (TPO) that have been marketed as environmentally friendly materials are polymer alloys of polypropylene (PP) and olefin-based rubber (EPDM / IIR). Various rubber compounding chemicals such as vulcanizing agents, vulcanization accelerators, softeners, and plasticizers are added, and there is a risk of contamination of transported fluids and fluids due to bleeding and blooming of these added chemicals. Not suitable for piping of eating and drinking related equipment.
[0006]
In addition, the raw material of the flexible hose used for the currently used medical gas (oxygen, nitrogen, carbon dioxide, helium, nitrous oxide, and a mixed gas thereof) hose assembly is mainly made of synthetic rubber such as NBR. Have been. Since synthetic rubber such as NBR has poor gas barrier performance, it has been reported that if the base valve of a medical gas cylinder is left open, gas in the cylinder will disappear in a short time.
[0007]
Although there is a fuel hose for fuel oil only for indoor use, there is no fuel hose for fuel oil which can be used outdoors. It is considered that rubber is deteriorated by ultraviolet rays or the like because the raw material is mainly made of synthetic rubber. It has been reported that even during use, a part of the rubber compounding agent is eluted in the fuel oil, and this ash adheres to the burner needle part during combustion, causing combustion inhibition.
[0008]
As described above, the pipe hose raw material does not contain the blending additives precipitated from the pipe hose material, does not contaminate the fluids and fluids to be transported, and does not generate harmful substances at the time of final disposal. Need to be configured.
[0009]
In addition, the volatile substances generated from the transported fluid / fluid are not released into the atmosphere. In addition, while the fluid to be transported and the fluid stay in the piping hose, oxygen in the air outside the piping hose is reversely permeated and mixed, it is an inexpensive and economical gas barrier that also has a gas barrier function to prevent deterioration of the substance in the hose. An object of the present invention is to provide a flexible hose made of a functional pressure-resistant resin.
[0010]
[Means for Solving the Problems]
The present invention solves the above-mentioned problems, and the material used for each layer of the multi-layer hose constituent material has a function of welding each layer by adhesion and fusion, and has a high possibility of causing various kinds of contamination. -A non-polluting thermoplastic elastomer material that does not contain additives such as plasticizers and has passed the food hygiene standards of each country is preferable.
[0011]
【Example】
The structure of the multifunctional pressure-resistant resin flexible hose of the present invention will be described with reference to the drawings. FIG. 1 shows an example of the structure of a multifunctional pressure-resistant flexible hose indicated by reference numeral 1, where 11 is an inner tube inner layer, and 12 is an inner tube. An inner tube intermediate layer, 13 indicates an inner tube outer layer, 14 indicates a reinforcing fiber blade layer, and 15 indicates an outer cover layer.
The flexible hose made of synthetic resin in FIG. 1 has a multi-layer structure, and each layer is made of a material corresponding to a target function. Further, the thermoplastic elastomer material, the reinforcing fiber and the like of each layer are all welded and integrated with each other. As a result, it is possible to improve physical properties such as kink characteristics, tensile strength, and pressure resistance due to the minimum bending of the hose.
The structure that can be used in a wide range of application fields is ideally composed of five layers from the viewpoint of hose performance, workability, and manufacturing cost.
[0012]
The material for each layer of the hose structure in FIG. 1 will be described.
The optimum synthetic resin material of the inner tube composed of the inner tube inner layer 11, the inner tube intermediate layer 12, and the inner tube outer layer 13 is as follows:
"Inner tube 11"
Polyolefin resin (PE / PP / polybutene), polymethylpentene-1 (PMP), polyester elastomer (TPEE), styrene-based elastomer (SBS / SIS / SEBS / SEPS), ethylene-based elastomer (TEEA / TEVA / TEMA), acid Ethylene copolymer having an anhydride group (such as Lexpearl ET manufactured by Nippon Polyolefin Co., Ltd.), thermoplastic thermoplastic crosslinked resin (such as Lexpearl RC manufactured by Nippon Polyolefin Co., Ltd.), and modified polyolefin resin (MAH-) grafted with maleic anhydride g-PE / MAH-g-PP).
Further, a polymer alloy composition obtained by arbitrarily combining these synthetic resin materials is preferable.
"Inner tube 12"
Ethylene vinyl alcohol copolymer resin (EVOH) and ethylene-ethyl acrylate copolymer resin (TEEA) with excellent functional properties such as gas barrier properties, solvent barrier properties, oil resistance, organic solvent resistance, and fragrance retention And ethylene-methyl acrylate copolymer resin (TEMA).
"Inner tube 13"
Polyolefin resin (PE / PP / polybutene), polymethylpentene-1 (PMP), polyester elastomer (TPEE), styrene-based elastomer (SBS / SIS / SEBS / SEPS), ethylene-based elastomer (TEEA / TEVA / TEMA), acid Ethylene copolymer having an anhydride group (such as Lexpearl ET manufactured by Nippon Polyolefin Co., Ltd.), thermoplastic thermoplastic crosslinked resin (such as Lexpearl RC manufactured by Nippon Polyolefin Co., Ltd.), and modified polyolefin resin (MAH-) grafted with maleic anhydride g-PE / MAH-g-PP).
Further, a polymer alloy composition obtained by arbitrarily combining these synthetic resins is preferable.
[0013]
"Reinforcing fiber blade layer 14"
It is a reinforcing layer for securing physical strength characteristics such as pressure resistance and tensile strength of the flexible hose, and a reinforcing blade material such as polyester fiber, polyethylene fiber, polyarylate fiber, carbon fiber, glass fiber, and metal fiber is preferable.
[0014]
"Outer cover layer 15"
Polyolefin resin (PE / PP / polybutene), polymethylpentene-1 resin (PMP), polyester elastomer (TPEE), styrene elastomer (SBS / SIS / SEBS / SEPS), ethylene elastomer (TEEA / TEVA / TEMA), Ethylene copolymers having acid anhydride groups (such as Lexpearl ET manufactured by Nippon Polyolefin Co., Ltd.), polyolefin thermoplastic crosslinked resins (such as Lexpearl RC manufactured by Nippon Polyolefin Co., Ltd.), and modified polyolefin resins grafted with maleic anhydride (MAH) -G-PE / MAH-g-PP).
Further, a polymer alloy composition obtained by arbitrarily combining these synthetic resins is preferable.
[0015]
Next, a method for manufacturing the multifunctional pressure-resistant resin flexible hose of the present invention will be described with reference to the structural diagram example of FIG.
The three-layer inner tube composed of the three layers of the inner layer 11, the middle layer 12, and the outer layer 13 is a co-extrusion molding method (multi-layer extrusion molding method) in which a three-layer tube is integrally formed simultaneously by multilayer push-molding. Optimum in terms of strength and economy.
For example, to obtain a three-layer inner tube using polyethylene (PE: LLDPE) for the material of the inner layer 11, ethylene vinyl alcohol (EVOH) for the material of the intermediate layer 12, and polyethylene (PE: LLDPE) for the material of the outer layer 13, Individual materials melt-softened individually by three extruders are fed into one common die to form an integrated three-layer inner tube.
[0016]
Next, the three-layer inner tube is braided with polyethylene fibers using a braider machine for the purpose of improving the physical strength, and the reinforcing blade layer 14 is formed.
[0017]
Next, the outer cover layer 15 is formed on the three-layer inner tube on which the polyethylene resin reinforcing blade layer 14 is formed by using an extrusion coating molding apparatus equipped with a crosshead die using pomethylpentene-1 resin (PMP) material. I do.
[0018]
Physical strength, weather resistance, gas barrier property, solvent barrier property, water resistance, warm water resistance, oil resistance, organic solvent resistance, fragrance retention, food sanitation Thus, a flexible hose made of a multifunctional pressure-resistant resin which has excellent characteristics and can be used in a wide range of business fields can be obtained easily and economically.
[0019]
Further, by using the same molding method as described above and arbitrarily selecting and combining the materials of claims 2, 3, and 4, it is possible to easily cope with applications in fields that require more advanced specification conditions. It is possible to easily and economically obtain a flexible hose made of a multifunctional pressure-resistant resin that does not contaminate a transport fluid while considering environmental measures.
[0020]
【The invention's effect】
The flexible hose made of multifunctional pressure-resistant resin of the present invention obtained by the method described in the means for solving the above problems,
(1) Flexible for piping with high performance characteristics such as food hygiene, water resistance, weather resistance, gas barrier properties, solvent barrier properties, solvent resistance, fragrance retention, and physical strength such as pressure resistance and tensile strength. Hose is used for fluids and fluids such as water, hot water, drinking water, fluid foods, pharmaceuticals, cosmetics, organic solvents, ultrapure water, hydraulic oil, food oil, fuel oil, ink, paint, and air, nitrogen, Oxygen, hydrogen, helium, carbon dioxide, nitrous oxide (laughing gas), acetylene gas, propane gas, natural gas, ethylene, butane, etc. Can be used for transportation piping.
(2) Applications in various industrial fields include hot and cold water supply equipment, sanitary equipment, floor heating equipment for buildings, beverage and food equipment, medical equipment, water treatment equipment, hydraulic and pneumatic equipment, organic solvents and ultra It can be used in a wide range of fields such as pure water washing equipment, air conditioning equipment, chemical related equipment, fuel oil transport equipment, OA equipment, machine tools, industrial equipment, agricultural hotbed equipment, agricultural and horticultural greenhouse heating equipment, etc. In addition, the function of not contaminating the surrounding environment, the cleanliness of the piping hose, and the free coloring can be expected to enhance the image of the attached equipment product.
(3) Chlorine compounds (chlorine-based chlorofluorocarbon gas / chlorine-based organic solvent) that cause destruction of the air environment, harmful gases volatilized from organic solvents, and volatilization generated from fuel oil such as gasoline, light oil, and kerosene that cause soil pollution. Gas. It has a function of barriering harmful gases that may lead to such air and soil pollution, and the resin-made flexible hose of the present invention is capable of removing harmful gases such as dioxin, environmental hormones, chlorine gas and hydrocyanic acid gas at the time of final disposal. It is a plumbing product that is made of raw materials that do not generate harmful substances and that is friendly to living organisms and the global environment.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a flexible hose according to the present invention.
[Explanation of symbols]
11 inner tube inner layer 12 inner tube intermediate layer 13 inner tube outer layer 14 reinforcing fiber blade layer 15 outer cover layer

Claims (4)

最内層(第1層)/中間層(第2層)/外層(第3層)の構成をした3層インナーチューブと補強繊維ブレード層(第4層)と最外層のアウターカバー層(第5層)とで構成した多機能性耐圧樹脂製フレキシブルホース。A three-layer inner tube having the structure of innermost layer (first layer) / intermediate layer (second layer) / outer layer (third layer), reinforcing fiber blade layer (fourth layer), and outermost outer cover layer (fifth layer) Layer) and a flexible hose made of multifunctional pressure-resistant resin. 3層インナーチューブの最内層(第1層)と外層(第3層)、最外層のアウターカバー層(第5層)に使用する熱可塑性合成樹脂材料としては、ポリオレフィン系樹脂(ポリエチレン/ポリブテン)、ポリアミド樹脂(PA)、ポリウレタン樹脂(TPU)、ポリ−4−メチルペンテン−1(PMP)、ポリエステルエラストマー(PTEE)、スチレン系エラストマー(SIS/SEBS/SEPS)、エチレン系エラストマー(TEEA/TEVA/TEMA)、酸無水物基を有するエチレン系共重合体(日本ポリオレフィン社製レクスパールET等)、ポリオレフィン系熱可塑性架橋樹脂(日本ポリオレフィン社製レクスパールRC等)、無水マレイン酸をグラフトした変性ポリオレフィン系樹脂(MAH−g−PP/MAH−g−PE)とスチレン系エラストマー(SIS/SEBS/SEPS)とのアロイ組成物等の材料を組み合わせて構成した請求項1の多機能性耐圧樹脂製フレキシブルホース。As the thermoplastic synthetic resin material used for the innermost layer (first layer) and outer layer (third layer) of the three-layer inner tube and the outermost outer cover layer (fifth layer), polyolefin resin (polyethylene / polybutene) is used. , Polyamide resin (PA), polyurethane resin (TPU), poly-4-methylpentene-1 (PMP), polyester elastomer (PTEE), styrene-based elastomer (SIS / SEBS / SEPS), ethylene-based elastomer (TEEA / TEVA / TEMA), an ethylene copolymer having an acid anhydride group (such as Lexpearl ET manufactured by Japan Polyolefin Co., Ltd.), a polyolefin-based thermoplastic cross-linked resin (such as Lexpearl RC manufactured by Japan Polyolefin Co., Ltd.), and a modified polyolefin grafted with maleic anhydride. Resin (MAH-g-PP / MAH-g-P) ) And styrene elastomers (SIS / SEBS / SEPS) and multifunctional withstand plastic flexible hose according to claim 1 which is constructed by combining a material such as alloy composition. ガスバリヤー性・耐油性・耐有機溶剤性・保香性等の特性を有したガスバリヤー層である3層インナーチューブの中間層(第2層)は、エチレン・ビニルアルコール共重合樹脂(EVOH)、エチレン・アクリル酸エチル共重合樹脂(TEEA)、エチレン−メチルアクリレート共重合樹脂(TEMA)等の材料より構成した多機能性耐圧樹脂製フレキシブルホース。The middle layer (second layer) of the three-layer inner tube, which is a gas barrier layer having properties such as gas barrier properties, oil resistance, organic solvent resistance, and fragrance retention properties, is an ethylene-vinyl alcohol copolymer resin (EVOH). A flexible hose made of a multifunctional pressure-resistant resin made of a material such as ethylene-ethyl acrylate copolymer resin (TEEA) and ethylene-methyl acrylate copolymer resin (TEMA). フレキシブルホースの耐圧・引張強度等の物理強度特性を確保する補強繊維ブレード層(第4層)は、ポリエステル繊維、ポリプロピレン繊維、ポリエチレン繊維、ポリアリレート繊維、アラミド繊維、炭素繊維、ガラス繊維、金属繊維等の材料より構成した請求項1の多機能性耐圧樹脂製フレキシブルホース。The reinforcing fiber blade layer (fourth layer) that secures physical strength characteristics such as pressure resistance and tensile strength of the flexible hose is made of polyester fiber, polypropylene fiber, polyethylene fiber, polyarylate fiber, aramid fiber, carbon fiber, glass fiber, metal fiber The flexible hose made of a multifunctional pressure-resistant resin according to claim 1, which is made of a material such as the above.
JP2002188658A 2002-06-27 2002-06-27 Multifunctional flexible hose made of pressure-resistant resin Pending JP2004025752A (en)

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JP2004216665A (en) * 2003-01-14 2004-08-05 Bridgestone Corp High pressure low-gas-permeable hose
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JP2007015279A (en) * 2005-07-08 2007-01-25 Bridgestone Corp Hose for gas supply
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JP2010094837A (en) * 2008-10-14 2010-04-30 Toyox Co Ltd Gas-barrier synthetic resin tube
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CN112912246A (en) * 2018-10-17 2021-06-04 积水化学工业株式会社 Ultrapure water pipe and multilayer pipe
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