JPH02143843A - Tube made of synthetic resin and its manufacture - Google Patents
Tube made of synthetic resin and its manufactureInfo
- Publication number
- JPH02143843A JPH02143843A JP63297401A JP29740188A JPH02143843A JP H02143843 A JPH02143843 A JP H02143843A JP 63297401 A JP63297401 A JP 63297401A JP 29740188 A JP29740188 A JP 29740188A JP H02143843 A JPH02143843 A JP H02143843A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- coating
- linear body
- coating film
- secondary coating
- 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.)
- Granted
Links
- 229920003002 synthetic resin Polymers 0.000 title claims abstract description 41
- 239000000057 synthetic resin Substances 0.000 title claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 238000000576 coating method Methods 0.000 claims abstract description 77
- 239000011248 coating agent Substances 0.000 claims abstract description 76
- 239000000843 powder Substances 0.000 claims abstract description 16
- 229920002050 silicone resin Polymers 0.000 claims abstract description 10
- 238000005452 bending Methods 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims description 29
- 239000002184 metal Substances 0.000 claims description 29
- 239000010410 layer Substances 0.000 claims description 22
- 239000003973 paint Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 10
- 239000011247 coating layer Substances 0.000 claims 1
- 239000002798 polar solvent Substances 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 150000004945 aromatic hydrocarbons Chemical class 0.000 abstract description 2
- 239000013307 optical fiber Substances 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- 239000002904 solvent Substances 0.000 abstract 1
- -1 polyesteramideimide Polymers 0.000 description 4
- WVDDGKGOMKODPV-UHFFFAOYSA-N Benzyl alcohol Chemical compound OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 description 3
- 239000004962 Polyamide-imide Substances 0.000 description 3
- 239000004642 Polyimide Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 229920002312 polyamide-imide Polymers 0.000 description 3
- 229920001721 polyimide Polymers 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 210000003298 dental enamel Anatomy 0.000 description 2
- 239000002320 enamel (paints) Substances 0.000 description 2
- 239000006082 mold release agent Substances 0.000 description 2
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 description 2
- 229920003055 poly(ester-imide) Polymers 0.000 description 2
- 229920002492 poly(sulfone) Polymers 0.000 description 2
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000004840 adhesive resin Substances 0.000 description 1
- 229920006223 adhesive resin Polymers 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 235000019445 benzyl alcohol Nutrition 0.000 description 1
- CCDWGDHTPAJHOA-UHFFFAOYSA-N benzylsilicon Chemical compound [Si]CC1=CC=CC=C1 CCDWGDHTPAJHOA-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- XXJWXESWEXIICW-UHFFFAOYSA-N diethylene glycol monoethyl ether Chemical compound CCOCCOCCO XXJWXESWEXIICW-UHFFFAOYSA-N 0.000 description 1
- 229940075557 diethylene glycol monoethyl ether Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 229920006015 heat resistant resin Polymers 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920001921 poly-methyl-phenyl-siloxane Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
- Laminated Bodies (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、医療機器用、分析機器用、電気機器用など
の種々の用途に用いられる比較的小径の合成樹脂製チュ
ーブとこの合成樹脂製チューブを製造する方法に関する
。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a relatively small diameter synthetic resin tube used for various purposes such as medical equipment, analytical equipment, and electrical equipment, and a synthetic resin tube made of this synthetic resin. The present invention relates to a method of manufacturing a tube.
従来、この種の合成樹脂製チューブを製造するものとし
ては、特公昭５６−４４８０９号公報に開示されたもの
がある。Conventionally, a method for manufacturing this type of synthetic resin tube is disclosed in Japanese Patent Publication No. 44809/1983.
この合成樹脂製チューブの製造方法は、金属線状体上に
熱融着性樹脂皮膜を形成させたのち、この上に耐熱性樹
脂塗料を塗布焼付は皮膜を形成させ、この′Ｎ１．覆線
状体を少なくとも該金属線状体の降伏点以上に伸ばし樹
脂皮膜の該線状体への密着性を失なわせしめ、次いで金
属線状体を引抜くものである。This method of manufacturing a synthetic resin tube involves forming a heat-adhesive resin film on a metal linear body, applying a heat-resistant resin paint thereon and baking it to form a film. The covered wire body is stretched to at least the yield point of the metal wire body or higher to cause the resin coating to lose its adhesion to the wire body, and then the metal wire body is pulled out.
しかしながら、この製造法にあっては、金属線状体と樹
脂被膜との密着性が良いものの組合せの場合には、金属
線状体のスムーズな引抜きが困難である欠点があり、ま
た引抜きが行えたとしても合成樹脂製チューブに歪が残
り、加熱処理を施して歪を解消せねばならない不都合が
ある。However, this manufacturing method has the disadvantage that it is difficult to pull out the metal wire smoothly when the metal wire is combined with a resin coating that has good adhesion. Even if this were the case, distortion would remain in the synthetic resin tube, which would require heat treatment to eliminate the distortion.
このようなことから、上記先行発明においては、金属線
状体表面に予めシリコーンオイルなどの離型剤を塗布し
ておくようになっている。For this reason, in the above-mentioned prior invention, a mold release agent such as silicone oil is applied in advance to the surface of the metal linear body.
しかし、離型剤を塗布した金属線状体では、次工程での
合成樹脂塗料の塗布に際して塗料の均一な塗布が困難と
なり、均一な厚さの塗膜、ひいては均一な厚さの合成樹
脂製チューブが得られなくなる問題が生じる。However, with a metal linear body coated with a mold release agent, it becomes difficult to apply the paint uniformly when applying synthetic resin paint in the next process. A problem arises in which the tube cannot be obtained.
また、このような製造方法で得られた合成樹脂製チュー
ブはその内面が平滑なものとなる。したがって、このチ
ューブに挿入物を挿入する際、挿入物の表面が平滑であ
ると、両者の表面が相互に膠着し、挿入物をスムーズに
挿入することができない不都合もあった。Moreover, the synthetic resin tube obtained by such a manufacturing method has a smooth inner surface. Therefore, when inserting an insert into this tube, if the surface of the insert is smooth, the two surfaces will stick to each other, making it impossible to insert the insert smoothly.
この発明では、金属線状体上にシリコーン樹脂と無機物
粉末とからなる塗料を塗布、焼付して、１次塗膜を形成
したのち、この１次塗膜上に１種以上の合成樹脂塗料を
１回以上塗布、焼付して２次塗膜を形成して被覆線状体
を得たのち、この被覆線状体に屈曲を付与して２次塗膜
と１次塗膜との密着性を失わしめ、ついで金属線状体に
その降伏点以下の伸びを与えて２次塗膜を１次塗膜から
剥難したのち、２次塗膜を抜き取ることにより、内面に
微細突起を有する合成樹脂製チューブを得るようにし、
上記課題を解決するようにした。In this invention, a paint made of silicone resin and inorganic powder is applied and baked on a metal linear body to form a primary coating film, and then one or more synthetic resin paints are applied on the primary coating film. After coating and baking one or more times to form a secondary coating film to obtain a coated linear body, this coated linear body is given bending to improve the adhesion between the secondary coating film and the primary coating film. After that, the secondary coating film is peeled off from the primary coating film by giving the metal linear body an elongation below its yield point, and then the secondary coating film is removed to create a synthetic resin with fine protrusions on the inner surface. So that you get a tube made of
I tried to solve the above problem.
以下、この発明の詳細な説明する。The present invention will be described in detail below.
第１図は、この発明の合成樹脂製チューブの一例を示す
もので、図中符号１はこの発明に係る合成樹脂製チュー
ブ（以下、単にチューブと略記する。）である。このチ
ューブｌは、内層２と外層３とからなる二層構造となっ
ている。内層２の内面には突起高さが０．０１−１００
μｍ好ましくは０、Ｏ１μ１１！〜２０μｍの多数の微
細突起４・・・が形成されている。内層２上には外層３
が一体に設けられている。これら内層２および外層３は
ポリイミド、ポリアミドイミド、ポリエステルイミド、
ポリエステルアミドイミド、ポリエステル、ポリウレタ
ン、ポリビニルホルマール、ポリビニルブチラール、ポ
リエチレンテレフタレート、フェノキシ、ポリスルホン
などの合成樹脂からなるもので、一般に内層２と外層３
とは同種の合成樹脂からなるものである。この例のチュ
ーブｌでは内層２と外層３との２重構造となっているが
、当然１種の合成樹脂からなる１重構造であってもよく
、また合成樹脂の種類を異えて３重以上の構造としても
よく、例えばポリイミドからなる内層２とポリアミドイ
ミドからなる外層３とから構成することによって、耐熱
性および耐摩耗性の優れたチューブを得ることができ、
用途等によって合成樹脂の種類および積層数を適宜変更
することができる。FIG. 1 shows an example of a synthetic resin tube according to the present invention, and reference numeral 1 in the figure indicates the synthetic resin tube (hereinafter simply abbreviated as tube) according to the present invention. This tube 1 has a two-layer structure consisting of an inner layer 2 and an outer layer 3. The inner surface of the inner layer 2 has a protrusion height of 0.01-100.
μm preferably 0, O1μ11! A large number of fine protrusions 4 of ~20 μm are formed. Outer layer 3 is on inner layer 2
are integrated. These inner layer 2 and outer layer 3 are made of polyimide, polyamideimide, polyesterimide,
It is made of synthetic resin such as polyesteramideimide, polyester, polyurethane, polyvinyl formal, polyvinyl butyral, polyethylene terephthalate, phenoxy, polysulfone, etc., and generally has an inner layer 2 and an outer layer 3.
is made of the same type of synthetic resin. The tube 1 in this example has a double layer structure consisting of an inner layer 2 and an outer layer 3, but of course it may also have a single layer structure made of one type of synthetic resin, or it may have a three layer structure or more by using different types of synthetic resin. For example, by constructing the inner layer 2 made of polyimide and the outer layer 3 made of polyamideimide, a tube with excellent heat resistance and abrasion resistance can be obtained.
The type of synthetic resin and the number of layers can be changed as appropriate depending on the purpose and the like.
次に、このようなチューブｌを製造する方法について説
明する。Next, a method for manufacturing such a tube 1 will be explained.
まず、銅、アルミニウム、金、銀などの金属からなる金
属線状体を用意する。この金属線状体は断面形状が円形
のものに限られず、断面正方形、長方形、六角形、三角
形や楕円形などの断面形状のものであってもよい。First, a metal wire body made of metal such as copper, aluminum, gold, or silver is prepared. This metal wire body is not limited to a circular cross-sectional shape, but may have a square, rectangular, hexagonal, triangular, or elliptical cross-sectional shape.
つぎに、この金属線状体の表面にシリコーン樹脂と無機
物粉末とからなる塗料を塗布し、エナメル焼付炉などを
用いて焼付けて、１次塗膜を形成する。ここでのシリコ
ーン樹脂としては、特に限定されないが、メチルシリコ
ーン、フェニルメチルシリコーン、フェニルシリコーン
などが用いられ、焼付後の伸び率が少なくとも３０％以
上のものが好ましい。また、無機物粉末としては、炭酸
カルシウム、シリカ、タルク、クレー、酸化チタン、石
コウ、マイカ、酸化鉄、ケイソウ土、火山灰などが用い
られ、その粒径は０．０１〜２０μｍの範囲のものが選
ばれる。また、塗料中におけるシリコーン樹脂と無機物
粉末との割合は、シリコーン樹脂１００重量部に対して
無機物粉末１０〜１０００重量部程度とされる。さらに
、この塗料には溶剤として、トルエン、キシレン、エチ
ルベンゼンなどの芳香族炭化水素に加えてジエチレング
リコールモノエチルエーテルなどの多価アルコールｄ
導体、ベンジルアルコール、Ｎ−メチル−ピロリドンな
どの極性溶剤を添加したものが用いられる。この極性溶
剤は無機物粉末が吸湿などの原因によって凝集、沈澱、
ゲル化などを生ずることなく塗料中で均一に分散するよ
うに配合されるものである。この塗料中のシリコーン樹
脂と無機物粉末とからなる固形分量は、３０〜８０％程
度とされる。Next, a paint made of silicone resin and inorganic powder is applied to the surface of this metal linear body and baked using an enamel baking oven or the like to form a primary coating film. The silicone resin used here is not particularly limited, but methyl silicone, phenylmethyl silicone, phenyl silicone, etc. can be used, and those with an elongation rate after baking of at least 30% are preferred. In addition, as inorganic powders, calcium carbonate, silica, talc, clay, titanium oxide, gypsum, mica, iron oxide, diatomaceous earth, volcanic ash, etc. are used, and the particle size is in the range of 0.01 to 20 μm. To be elected. Further, the ratio of silicone resin and inorganic powder in the paint is approximately 10 to 1000 parts by weight of inorganic powder to 100 parts by weight of silicone resin. Furthermore, this paint contains aromatic hydrocarbons such as toluene, xylene, and ethylbenzene as well as polyhydric alcohols such as diethylene glycol monoethyl ether.
A conductor and a polar solvent such as benzyl alcohol or N-methyl-pyrrolidone are used. This polar solvent causes inorganic powder to coagulate, precipitate, and
It is formulated so that it can be uniformly dispersed in the paint without causing gelation. The solid content of the silicone resin and inorganic powder in this paint is approximately 30 to 80%.
この塗料の金属線状体への塗布は通常のエナメル塗布用
ダイスなどを用いて行われる。焼付後の１次塗膜の厚さ
はｌＯ〜３０μｍ程度とすることが望ましい。そして、
この１次塗膜の外表面には、したがって無機物粉末と極
性溶剤の存在によって微細な凹凸が形成されるとともに
その表面はシリコーン樹脂により非接着性あるいは難接
着性となっている。This paint is applied to the metal linear body using an ordinary enamel coating die or the like. The thickness of the primary coating film after baking is preferably about 10 to 30 μm. and,
Therefore, on the outer surface of this primary coating film, fine irregularities are formed due to the presence of the inorganic powder and the polar solvent, and the surface is made non-adhesive or difficult to adhere to due to the silicone resin.
次に、この１次塗膜上に合成樹脂塗料を塗布、焼付して
２次塗膜を形成する。ここで用いられる合成樹脂塗料と
しては、ポリイミド、ポリアミドイミド、ポリエステル
イミド、ポリエステルアミドイミド、ポリエステル、ポ
リウレタン、ポリビニルホルマール、ポリビニルブチラ
ール、ポリエチレンテレフタレート、フェノキシ、ポリ
スルホンなどの合成樹脂からなるものが用いられる。こ
の２次塗膜の形成は合成樹脂塗料を１回以上複数回繰り
返して塗布焼付して所望の厚みとなるように行われ、こ
の際、同一の合成樹脂塗料を用いることに限られず、異
る合成樹脂塗料を用いることもできる。合成樹脂塗料の
塗布は同様にエナメル塗布用ダイスなどを用いて行われ
、焼付にはエナメル焼付炉などが用いられる。Next, a synthetic resin paint is applied onto this primary coating and baked to form a secondary coating. As the synthetic resin paint used here, those made of synthetic resins such as polyimide, polyamideimide, polyesterimide, polyesteramideimide, polyester, polyurethane, polyvinyl formal, polyvinyl butyral, polyethylene terephthalate, phenoxy, polysulfone, etc. are used. The formation of this secondary coating film is performed by repeatedly applying and baking the synthetic resin paint one or more times to obtain the desired thickness. Synthetic resin paints can also be used. The synthetic resin paint is similarly applied using an enamel coating die, and an enamel baking furnace is used for baking.
かくして、１次塗膜および２次塗膜とからなる樹脂被覆
を有する被覆線状体が得られる。In this way, a coated linear body having a resin coating consisting of a primary coating film and a secondary coating film is obtained.
次に、この被覆線状体に屈曲を与えて１次塗膜と２次塗
膜との間の密着性を低減する。屈曲を与える手段として
は、被覆線状体に曲げを加えるものであれば、特に限定
されないが、導線の小さな曲り癖を矯正するために用い
られるストレートナ−などを用いるのが便利である。Next, this coated linear body is bent to reduce the adhesion between the primary coating film and the secondary coating film. The bending means is not particularly limited as long as it bends the covered wire, but it is convenient to use a straightener used to correct small bends in the conductor.
この屈曲の付与によって、１次塗膜の表面が非接着性ま
たは難接着性であることから、１次塗膜と２次塗膜との
密着性がかなり低下した状態となる。Due to this bending, the surface of the primary coating film is non-adhesive or has difficulty adhesion, resulting in a state in which the adhesion between the primary coating film and the secondary coating film is considerably reduced.
次に、１次塗膜と２次塗膜との密着性が低下せしめられ
た被覆線状体の２次塗膜の所定の長さごとにその円周方
向に切れ目を入れて２次塗膜のみを切断したのち、金属
線状体にその降伏点以下の伸びを与え、２次塗膜を１次
塗膜から剥離し、２次塗膜、すなわちチューブを１次塗
膜が付着した状態の金属線状体から抜き取る。この２次
塗膜に切れ目を入れることにより、次工程の金属線状体
の引伸の際に２次塗膜に余分の伸びが加わることを防止
することができる。Next, cuts are made in the circumferential direction of the secondary coating film of the coated linear body in which the adhesion between the primary coating film and the secondary coating film has been reduced, and the secondary coating film is applied. After cutting the metal wire, the metal wire is stretched below its yield point, the secondary coating is peeled off from the primary coating, and the secondary coating, i.e. the tube, is separated from the tube with the primary coating attached. Remove it from the metal wire. By making cuts in this secondary coating film, it is possible to prevent excessive elongation from being applied to the secondary coating film during the next step of stretching the metal linear body.
金属線状体にその降伏点以下の伸びを与える方−法とし
ては、例えば被覆線状体を引抜ダイスに通して軽く伸線
する方法や圧縮ロール間ｊこ通して伸線する方法あるい
は１１覆線状体の両端部をそれぞれ別のボビンに適当回
数巻き付け、それぞれのボビンの回転速度を変えて巻き
取る方法などが用いられ、また定尺の被覆線状体の一端
を固定し、他端を単純に引張る方法なども採用できる。Methods of giving a metal wire body an elongation below its yield point include, for example, passing a coated wire body through a drawing die and drawing the wire lightly, passing it between compression rolls and drawing the wire, or drawing the wire by passing it through a compression roll. A method is used in which both ends of the wire are wound around separate bobbins an appropriate number of times, and the rotation speed of each bobbin is changed. A method of simply pulling can also be adopted.
金属線状体に与える伸びの量としては、１〜２０％程度
で十分であり、通常は２〜１０％の範囲とされる。The amount of elongation given to the metal linear body is about 1 to 20%, and is usually in the range of 2 to 10%.
このような低い伸びで２次塗膜が１次塗膜から剥離する
のは、先の屈曲付与工程において２次塗膜と１次塗膜と
の間の密着性が低下しているためである。The reason why the secondary coating film peels off from the primary coating film with such low elongation is because the adhesion between the secondary coating film and the primary coating film has decreased in the previous bending process. .
このような製造法によれば、得られるチューブ、すなわ
ち２次塗膜には微かの伸びしか作用しないので、チュー
ブに歪が存在することがない。また、１次塗膜の表面の
微細な突起が転写されてチューブ内面にも微細な突起が
形成される。さらに、金属線状体とチューブとなる２次
塗膜との間に１次塗膜が形成されるので、チューブ内面
に金属粉などが付着することがない。また、１次塗膜表
面の微細な突起によって２次塗膜となる合成樹脂塗料の
ぬれ性が良くなり、厚さの均一な２次塗膜、すなわちチ
ューブが得られる。またさらに、１次塗膜が付着した金
属線状体は、与えられる伸びが数％と小さいので、その
まま繰り返して再使用することも可能である。According to such a manufacturing method, only a slight elongation acts on the obtained tube, that is, the secondary coating film, so that no distortion exists in the tube. Further, the fine protrusions on the surface of the primary coating film are transferred, and fine protrusions are also formed on the inner surface of the tube. Furthermore, since the primary coating film is formed between the metal linear body and the secondary coating film that becomes the tube, metal powder and the like will not adhere to the inner surface of the tube. In addition, the fine protrusions on the surface of the primary coating film improve the wettability of the synthetic resin paint serving as the secondary coating film, resulting in a secondary coating film, ie, a tube, having a uniform thickness. Furthermore, since the metal linear body to which the primary coating film is attached has a small elongation of a few percent, it is possible to repeatedly reuse it as it is.
以上説明したように、この発明の合成樹脂製チューブは
、合成樹脂塗膜が１層以上或いは２層以上積層された積
層構造であって、その内面に微細突起が形成されたもの
であるので、合成樹脂製チューブ内に物体、例えば多数
本の光ファイバなどを挿入する際、極めてスムーズに挿
入することができる。また、合成樹脂塗膜の選択によっ
て広範囲の特性（機械的特性、熱的特性、電気的特性な
ど）を持つものを適宜得ることができる。As explained above, the synthetic resin tube of the present invention has a laminated structure in which one or more layers or two or more layers of synthetic resin coating are laminated, and fine protrusions are formed on the inner surface of the tube. When inserting an object, such as a large number of optical fibers, into a synthetic resin tube, it can be inserted extremely smoothly. Further, by selecting a synthetic resin coating film, one having a wide range of properties (mechanical properties, thermal properties, electrical properties, etc.) can be obtained as appropriate.
また、この発明の合成樹脂製チューブの製造法は金属線
状体上にシリコーン樹脂と無機物粉末とからなる塗料を
塗布、焼付して、１次塗膜を形成したのち、この１次塗
膜上に１種以上の合成樹脂塗料を１回以上塗布、焼付し
て２次塗膜を形成して被覆線状体を得たのち、この被覆
線状体に屈曲を付与して２次塗膜と１次塗膜との密着性
を失わしめ、ついで金属線状体にその降伏点以下の伸び
を与えて２次塗膜を１次塗膜から剥離したのち、２次塗
膜を抜き取るものであるので、厚さが均一で、残留歪が
なく、金属粉などの異物の付着がなく内面に微細突起が
形成された合成樹脂製チューブを得ることができる。In addition, the method for manufacturing a synthetic resin tube of the present invention involves coating a metal linear body with a paint made of silicone resin and inorganic powder and baking it to form a primary coating film. One or more synthetic resin paints are applied once or more to the surface and baked to form a secondary coating film to obtain a coated linear body, and then this coated linear body is bent to form a secondary coating film. The process involves losing adhesion with the primary coating, then elongating the metal linear body below its yield point to peel the secondary coating from the primary coating, and then extracting the secondary coating. Therefore, it is possible to obtain a synthetic resin tube with uniform thickness, no residual strain, no adhesion of foreign matter such as metal powder, and fine protrusions formed on the inner surface.
第１図はこの発明の合成樹脂製チューブの一例を示す概
略断面図である。
１・・・・・・合成樹脂製チューブ、２・・・・・・内
層、３・・・・・・外層、４・・・・・・微細突起。FIG. 1 is a schematic sectional view showing an example of a synthetic resin tube of the present invention. 1...Synthetic resin tube, 2...Inner layer, 3...Outer layer, 4...Minute protrusions.
Claims (2)
た積層構造であって、その内面に微細突起が形成されて
いることを特徴とする合成樹脂製チューブ。(1) A synthetic resin tube characterized by having a laminated structure in which one or more synthetic resin coating layers or two or more layers are laminated, and having fine protrusions formed on its inner surface.
らなる塗料を塗布、焼付して、１次塗膜を形成したのち
、この１次塗膜上に１種以上の合成樹脂塗料を１回以上
塗布、焼付して２次塗膜を形成して被覆線状体を得たの
ち、この被覆線状体に屈曲を付与して２次塗膜と１次塗
膜との密着性を失わしめ、ついで金属線状体にその降伏
点以下の伸びを与えて２次塗膜を１次塗膜から剥離した
のち、２次塗膜を抜き取ることを特徴とする合成樹脂製
チューブの製法。(2) After coating and baking a paint made of silicone resin and inorganic powder on the metal linear body to form a primary coating film, one or more synthetic resin paints are applied on the primary coating film. After applying and baking several times to form a secondary coating film to obtain a coated linear body, this coated linear body is given bending to lose the adhesion between the secondary coating film and the primary coating film. A method for manufacturing a synthetic resin tube, which comprises tightening the metal linear body, then elongating the metal linear body below its yield point to peel the secondary coating from the primary coating, and then extracting the secondary coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63297401A JPH064300B2 (en) | 1988-11-25 | 1988-11-25 | Manufacturing method of synthetic resin tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63297401A JPH064300B2 (en) | 1988-11-25 | 1988-11-25 | Manufacturing method of synthetic resin tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02143843A true JPH02143843A (en) | 1990-06-01 |
| JPH064300B2 JPH064300B2 (en) | 1994-01-19 |
Family
ID=17846020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63297401A Expired - Lifetime JPH064300B2 (en) | 1988-11-25 | 1988-11-25 | Manufacturing method of synthetic resin tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH064300B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GR920100294A (en) * | 1992-07-06 | 1994-03-31 | Dura Line Ltd | Pipes with extremely low coefficient of friction of internal surface for the installation of cables and construction method |
| CN108177363A (en) * | 2017-12-28 | 2018-06-19 | 佛山市南方橡塑有限公司 | A kind of production technology and process units of non-closed clad type rubber tube |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009287717A (en) * | 2008-05-30 | 2009-12-10 | Toyox Co Ltd | Rubber foamed hose |
-
1988
- 1988-11-25 JP JP63297401A patent/JPH064300B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GR920100294A (en) * | 1992-07-06 | 1994-03-31 | Dura Line Ltd | Pipes with extremely low coefficient of friction of internal surface for the installation of cables and construction method |
| CN108177363A (en) * | 2017-12-28 | 2018-06-19 | 佛山市南方橡塑有限公司 | A kind of production technology and process units of non-closed clad type rubber tube |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH064300B2 (en) | 1994-01-19 |
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