JPH0452021Y2 - - Google Patents
Info
- Publication number
- JPH0452021Y2 JPH0452021Y2 JP1987019899U JP1989987U JPH0452021Y2 JP H0452021 Y2 JPH0452021 Y2 JP H0452021Y2 JP 1987019899 U JP1987019899 U JP 1987019899U JP 1989987 U JP1989987 U JP 1989987U JP H0452021 Y2 JPH0452021 Y2 JP H0452021Y2
- Authority
- JP
- Japan
- Prior art keywords
- mandrel
- methyl
- pentene
- poly
- reinforcing body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000003014 reinforcing effect Effects 0.000 claims description 26
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 claims description 23
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 229920006231 aramid fiber Polymers 0.000 claims description 7
- 239000004760 aramid Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 description 17
- 229920000642 polymer Polymers 0.000 description 7
- 230000002787 reinforcement Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000000155 melt Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000000576 coating method Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000007765 extrusion coating Methods 0.000 description 3
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 3
- AFFLGGQVNFXPEV-UHFFFAOYSA-N 1-decene Chemical compound CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 description 2
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 2
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 2
- HFDVRLIODXPAHB-UHFFFAOYSA-N 1-tetradecene Chemical compound CCCCCCCCCCCCC=C HFDVRLIODXPAHB-UHFFFAOYSA-N 0.000 description 2
- RYPKRALMXUUNKS-UHFFFAOYSA-N 2-Hexene Natural products CCCC=CC RYPKRALMXUUNKS-UHFFFAOYSA-N 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- CCCMONHAUSKTEQ-UHFFFAOYSA-N octadec-1-ene Chemical compound CCCCCCCCCCCCCCCCC=C CCCMONHAUSKTEQ-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000004711 α-olefin Substances 0.000 description 2
- ZZLCFHIKESPLTH-UHFFFAOYSA-N 4-Methylbiphenyl Chemical compound C1=CC(C)=CC=C1C1=CC=CC=C1 ZZLCFHIKESPLTH-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229920003368 Kevlar® 29 Polymers 0.000 description 1
- 229920003369 Kevlar® 49 Polymers 0.000 description 1
- 229920001410 Microfiber Polymers 0.000 description 1
- 229920000784 Nomex Polymers 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- -1 ethylene, propylene, 1-butyne Chemical class 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 239000004763 nomex Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Reinforced Plastic Materials (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案はポリ４−メチル−１−ペンテンを原料
として軽量性を損わずに抗張力を高めた補強体内
蔵の細物のホース製造用マンドレルに関する。[Detailed description of the invention] [Field of industrial application] The present invention is a thin hose manufacturing mandrel with a built-in reinforcing body that uses poly-4-methyl-1-pentene as a raw material and has increased tensile strength without sacrificing lightness. Regarding.
ポリ４−メチル−１−ペンテンは耐熱性、離型
性および耐加水分解性に優れているので、ホース
製造用マンドレルの原料として好適なことは実公
昭60−18903号公報で知られており、金属製の補
強体を内蔵させ得ることも同公報に示されてい
る。
It is known from Japanese Utility Model Publication No. 60-18903 that poly-4-methyl-1-pentene has excellent heat resistance, mold release properties, and hydrolysis resistance, and is therefore suitable as a raw material for mandrels for manufacturing hoses. The same publication also indicates that a metal reinforcing body can be incorporated.
ところで、ホース製造用マンドレルには、製造
対象のホースの種類によつては直径が10mm以下の
ような非常に細いマンドレルを要求されることが
ある。このような細いマンドレルに前記公報の技
術を応用すると以下に示すような問題が発生す
る。
By the way, depending on the type of hose to be manufactured, a very thin mandrel with a diameter of 10 mm or less may be required for the hose manufacturing mandrel. If the technique disclosed in the publication is applied to such a thin mandrel, the following problems will occur.
すなわち、ポリ４−メチル−１−ペンテンと金
属との接着性は悪いので、補強体として金属単線
を使用するとホース製造時のマンドレル引抜き工
程時に補強体とマンドレルが分離して補強効果を
失うことがある。そこで、通常撚合せによつて生
じる凹凸部のアンカー効果を期待して撚合せ線を
補強体として使用するが、その効果が充分でない
ばかりか、前記の如き細いマンドレルの補強体に
用いると、撚合せ線周囲に被覆されるポリマー層
の厚みが薄いため、撚合せの凹凸がそのままマン
ドレル周面に浮上り、平滑面を有するマンドレル
が得られないという問題がある。勿論、撚合せ線
の径を細くすれば問題は解決されるが、補強用金
属撚合せ線の細径に限界がある事と径の細いもの
は強度が弱く製造中に切断する等の不都合があつ
て補強体として使用できない。 In other words, since the adhesion between poly-4-methyl-1-pentene and metal is poor, if a single metal wire is used as a reinforcing body, the reinforcing body and mandrel may separate during the mandrel drawing process during hose manufacturing, and the reinforcing effect may be lost. be. Therefore, twisted wires are usually used as reinforcing bodies in hopes of providing an anchor effect for the irregularities created by twisting, but not only are the effects insufficient, but when used as reinforcing bodies for thin mandrels such as those mentioned above, twisted wires are used as reinforcing bodies. Since the thickness of the polymer layer covering the periphery of the wires is thin, the unevenness of the twisting directly floats onto the circumferential surface of the mandrel, making it impossible to obtain a mandrel with a smooth surface. Of course, the problem can be solved by reducing the diameter of the stranded wire, but there is a limit to the diameter of the reinforcing metal stranded wire, and thinner diameter wires have weak strength and may have to be cut during manufacturing. It cannot be used as a reinforcing body.
第２の問題点は、ポリ４−メチル−１−ペンテ
ン製マンドレルの特長の１つである軽量性が金属
補強体の存在によつて失われる点である。この傾
向は、とくにポリマー量の少い細いマンドレルに
おいて顕著である。 The second problem is that the light weight, which is one of the features of the poly-4-methyl-1-pentene mandrel, is lost due to the presence of the metal reinforcement. This tendency is particularly noticeable in thin mandrels with a small amount of polymer.
第３の問題点は金属とポリマーの熱容量差から
くるマンドレル製造上の不都合である。すなわ
ち、補強体内蔵マンドレルを連続生産するには、
電線被覆と同様に加熱した補強体を連続供給して
その周囲にポリ４−メチル−１−ペンテンを押出
被覆し、その後冷却し引取るのであるが、この冷
却時に金属補強体が優先的に冷却されて、押出被
覆工程付近の金属補強体の熱量まで失われ、押出
被覆がうまくできず界面接着力の乏しい補強体内
蔵マンドレルになるという問題である。この傾向
も、被覆するポリマー量の少い細いマンドレルに
おいて顕著である。 The third problem is the inconvenience in manufacturing the mandrel due to the difference in heat capacity between the metal and the polymer. In other words, in order to continuously produce mandrels with built-in reinforcing bodies,
In the same way as wire coating, a heated reinforcing body is continuously supplied, poly-4-methyl-1-pentene is extruded around it, and then it is cooled and taken off. During this cooling, the metal reinforcing body is preferentially cooled. This causes a problem in that the amount of heat in the metal reinforcing body near the extrusion coating process is also lost, resulting in poor extrusion coating and a reinforcing body built-in mandrel with poor interfacial adhesion. This tendency is also noticeable in thin mandrels with a small amount of polymer coating.
第４の問題点は、金属とポリマーの線膨張係数
の差からくるマンドレル製造上の不都合である。
すなわち加熱状態から冷却される際収縮率の差が
大きいため、得られたマンドレルのポリマー層と
金属補強体との間で長さの違いが生じ任意点で切
断すると樹脂断面により金属補強材が突出すると
いう問題である。 The fourth problem is the inconvenience in manufacturing the mandrel due to the difference in linear expansion coefficient between the metal and the polymer.
In other words, since there is a large difference in shrinkage rate when cooling from a heated state, there is a difference in length between the polymer layer and the metal reinforcement of the obtained mandrel, and when cut at an arbitrary point, the metal reinforcement protrudes due to the resin cross section. The problem is to do so.
すなわち本考案は以上の従来技術における補強
体内蔵の細いマンドレルの問題を解決することを
目的とするものであつて、より具体的には軽量
性、表面平滑性に優れ、補強体とポリマー層の接
着力が大きく、製造上の種々の不都合を解決した
補強体内蔵ポリ４−メチル−１−ペンテン製ホー
ス製造用マンドレルを提供することにある。
In other words, the present invention aims to solve the problem of the thin mandrel with a built-in reinforcing body in the prior art. It is an object of the present invention to provide a poly-4-methyl-1-pentene hose manufacturing mandrel with a built-in reinforcing body, which has a high adhesive strength and solves various manufacturing problems.
すなわち本考案はアラミド繊維を補強体として
内蔵しているポリ４−メチル−１−ペンテンから
構成される所望の断面形状の長尺体からなること
を特徴とするホース製造用マンドレルに関する。
That is, the present invention relates to a mandrel for manufacturing a hose, characterized in that it is made of a long body of poly-4-methyl-1-pentene having a desired cross-sectional shape and has aramid fibers incorporated therein as reinforcing bodies.
本考案において補強体として使用するものは、
ポリ４−メチル−１−ペンテンと同等の熱容量と
線膨張率を有すると共に径が細くても高強度を有
する線状物であり、かつ、製造上の点からポリ４
−メチル−１−ペンテンの融点以上の耐熱性を有
し、さらにポリ４−メチル−１−ペンテンとの接
着性も良好なる線状物であり、このような要求性
能の面から、本考案においてはアラミド繊維を使
用する。アラミド繊維としては、市販されている
ものをそのまま使用でき、たとえばノーメツクス
、ケブラー
２９、ケブラー
４９等が例示で
き、これらは単繊維状でも使用できるが、通常は
15μ以下の極細繊維のため、細いマンドレルの表
面形状を悪化させない程度の太さにまで撚合せて
使用することもできる。
What is used as a reinforcing body in this invention is:
It is a linear material that has the same heat capacity and coefficient of linear expansion as poly-4-methyl-1-pentene, and has high strength even if it has a small diameter.
- It is a linear material that has heat resistance higher than the melting point of methyl-1-pentene and also has good adhesive properties with poly-4-methyl-1-pentene. uses aramid fiber. Commercially available aramid fibers can be used as they are, such as Nomex, Kevlar 29, Kevlar 49, etc. These can also be used in the form of single fibers, but usually
Because it is an ultra-fine fiber of 15μ or less, it can be twisted to a thickness that does not deteriorate the surface shape of a thin mandrel.
ポリ４−メチル−１−ペンテンは４−メチル−
１−ペンテンの単独重合体もしくは４−メチル−
１−ペンテンと他のα−オレフイン、例えばエチ
レン、プロピレン、１−ブチン、１−ヘキセン、
１−オクテン、１−デセン、１−テトラデセン、
１−オクタデセン等の炭素数２ないし20のα−オ
レフインとの共重合体で通常４−メチル−１−ペ
ンテンを85モル％以上含む４−メチル−１−ペン
テンを主体とした重合体である。ポリ４−メチル
−１−ペンテンＡのメルトフローレート（荷重：
５Kg、温度：260℃）は好ましくは0.5ないし
200g／10mmの範囲のものである。メルトフロー
レートが0.5g／10mm未満のものは溶融粘度が高く
成形性に劣り、メルトフローレートが200g／10
mmを超えるものは溶融粘度が低く成形性に劣り、
また機械的強度も低い。 Poly 4-methyl-1-pentene is 4-methyl-
Homopolymer of 1-pentene or 4-methyl-
1-Pentene and other α-olefins such as ethylene, propylene, 1-butyne, 1-hexene,
1-octene, 1-decene, 1-tetradecene,
It is a copolymer with an α-olefin having 2 to 20 carbon atoms such as 1-octadecene, and usually contains 4-methyl-1-pentene in an amount of 85 mol% or more. Melt flow rate of poly-4-methyl-1-pentene A (load:
5Kg, temperature: 260℃) is preferably 0.5 to
It is in the range of 200g/10mm. If the melt flow rate is less than 0.5g/10mm, the melt viscosity is high and the moldability is poor, and the melt flow rate is 200g/10mm.
If the diameter exceeds mm, the melt viscosity is low and the moldability is poor.
It also has low mechanical strength.
また本考案においては前記ポリ４−メチル−１
−ペンテンの他に、可撓性を付与するために各種
炭化水素油やオリゴマー等を30重量％まで含ませ
てもかまわない。また、接着性を高めるためポリ
４−メチル−１−ペンテンの一部または全部をマ
レイン酸や無水マレイン酸の如き不飽和カルボン
酸類でグラフト変性してもかまわない。 In addition, in the present invention, the poly-4-methyl-1
-In addition to pentene, up to 30% by weight of various hydrocarbon oils, oligomers, etc. may be included to impart flexibility. Further, in order to improve adhesiveness, part or all of the poly-4-methyl-1-pentene may be graft-modified with an unsaturated carboxylic acid such as maleic acid or maleic anhydride.
本考案のマンドレルは、直径は10mm以下好まし
くは７mm以下の細いマンドレルを対象とすればと
くにその効果が大きい。すなわち10mmを超える太
いマンドレルは、補強体として金属の撚合せ線を
用いても前述したような問題は生じ難く、本考案
の構成を採る必要性は薄くなるからである。 The mandrel of the present invention is particularly effective when used with thin mandrels having a diameter of 10 mm or less, preferably 7 mm or less. In other words, with a thick mandrel exceeding 10 mm, the above-mentioned problem is unlikely to occur even if metal twisted wires are used as a reinforcing body, and there is no need to adopt the configuration of the present invention.
第１図は、本考案の実施例の一部斜視図であつ
て、１はポリ４−メチル−１−ペンテンからなる
断面円形の長尺体からなるホース製造用マンドレ
ル本体、２はアラミド繊維からなる補強体であ
る。マンドレルの断面形状は、円形のほか製造目
的のホース形状にあわせて種々採用することがで
きる。 FIG. 1 is a partial perspective view of an embodiment of the present invention, in which 1 is a main body of a hose manufacturing mandrel made of poly-4-methyl-1-pentene with a circular cross section, and 2 is made of aramid fiber. It is a reinforcement body. The cross-sectional shape of the mandrel may be circular or various other shapes depending on the shape of the hose to be manufactured.
本考案によれば、
ポリ４−メチル−１−ペンテン製の細物マン
ドレルの抗張力を向上することができる。
According to the present invention, it is possible to improve the tensile strength of a thin mandrel made of poly-4-methyl-1-pentene.
補強体内蔵による重量増加もほとんどないの
でマンドレルの軽量性が損われない。 There is almost no weight increase due to the built-in reinforcing body, so the lightness of the mandrel is not compromised.
引張り強度が大きいアラミド繊維を用いたこ
とにより内蔵する補強体の太さを細く出来ると
共に外観の良好なマンドレルが提供できる。 By using aramid fibers with high tensile strength, the thickness of the built-in reinforcing body can be reduced, and a mandrel with a good appearance can be provided.
補強体が不燃性の金属ではないので廃棄物処
理の問題も解決できる。 Since the reinforcing body is not made of non-flammable metal, the problem of waste disposal can also be solved.
補強体がポリマーであるのでポリ４−メチル
−１−ペンテンとの接着性が比較的良好であ
る。 Since the reinforcing body is a polymer, it has relatively good adhesion to poly-4-methyl-1-pentene.
ポリ４−メチル−１−ペンテンとアラミド繊
維の線膨張係数が金属線の場合と比べて極端に
異ならないので、収縮差に基づいて補強体端部
が樹脂の端面よりはみ出ることがない。 Since the linear expansion coefficients of poly-4-methyl-1-pentene and aramid fibers are not significantly different from those of metal wires, the ends of the reinforcing body do not protrude beyond the end surfaces of the resin due to differences in shrinkage.
熱容量も同程度のため、押出被覆後の冷却工
程で補強体とポリ４−メチル−１−ペンテンが
同速度で冷却され、金属を用いる場合のように
金属補強体が優先的に冷却されて押出被覆工程
での金属補強体にまで温度が低下して接着が十
分にいかず単線では1m以上、撚線でも0.5m程
度のものが手作業で容易に引抜けるといつた虞
もない。 Since the heat capacity is about the same, the reinforcement and poly-4-methyl-1-pentene are cooled at the same rate in the cooling process after extrusion coating, and as in the case of using metal, the metal reinforcement is preferentially cooled and extruded. There is no risk that the temperature of the metal reinforcement during the coating process will drop and the adhesion will not be sufficient, and that a single wire of 1 m or more, or a stranded wire of about 0.5 m, will be easily pulled out by hand.
といつた効果を示す。This shows the effect of
第１図は本考案のマンドレルを示す図。 FIG. 1 is a diagram showing the mandrel of the present invention.
Claims (1)
リ４−メチル−１−ペンテンから構成される所
望の断面形状の長尺体からなることを特徴とす
るホース製造用マンドレル。 (2) 断面直径が10mm以下である実用新案登録請求
の範囲第１項のホース製造用マンドレル。[Claims for Utility Model Registration] (1) Manufacture of a hose characterized by being made of a long body of a desired cross-sectional shape made of poly-4-methyl-1-pentene containing aramid fibers as a reinforcing body. Mandrel for use. (2) The mandrel for manufacturing a hose according to Claim 1 of the Utility Model Registration Claim, which has a cross-sectional diameter of 10 mm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987019899U JPH0452021Y2 (en) | 1987-02-16 | 1987-02-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987019899U JPH0452021Y2 (en) | 1987-02-16 | 1987-02-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63128008U JPS63128008U (en) | 1988-08-22 |
| JPH0452021Y2 true JPH0452021Y2 (en) | 1992-12-08 |
Family
ID=30814911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987019899U Expired JPH0452021Y2 (en) | 1987-02-16 | 1987-02-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0452021Y2 (en) |
-
1987
- 1987-02-16 JP JP1987019899U patent/JPH0452021Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63128008U (en) | 1988-08-22 |
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