JPS6248569B2 - - Google Patents
Info
- Publication number
- JPS6248569B2 JPS6248569B2 JP55103986A JP10398680A JPS6248569B2 JP S6248569 B2 JPS6248569 B2 JP S6248569B2 JP 55103986 A JP55103986 A JP 55103986A JP 10398680 A JP10398680 A JP 10398680A JP S6248569 B2 JPS6248569 B2 JP S6248569B2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- tube
- shrinkable
- rubber
- open end
- 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
- 229920001971 elastomer Polymers 0.000 claims description 32
- 239000005060 rubber Substances 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 28
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 14
- 238000007789 sealing Methods 0.000 description 8
- 229920002379 silicone rubber Polymers 0.000 description 7
- 239000004945 silicone rubber Substances 0.000 description 7
- 238000001816 cooling Methods 0.000 description 5
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- WRXCBRHBHGNNQA-UHFFFAOYSA-N (2,4-dichlorobenzoyl) 2,4-dichlorobenzenecarboperoxoate Chemical compound ClC1=CC(Cl)=CC=C1C(=O)OOC(=O)C1=CC=C(Cl)C=C1Cl WRXCBRHBHGNNQA-UHFFFAOYSA-N 0.000 description 1
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- YLZOPXRUQYQQID-UHFFFAOYSA-N 3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]propan-1-one Chemical compound N1N=NC=2CN(CCC=21)CCC(=O)N1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F YLZOPXRUQYQQID-UHFFFAOYSA-N 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229920006038 crystalline resin Polymers 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 229920005560 fluorosilicone rubber Polymers 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001868 water Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
Description
【発明の詳細な説明】
本発明は新規かつ改良された熱収縮性有底ゴム
チユーブの製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a new and improved method of manufacturing a heat-shrinkable bottomed rubber tube.
従来、熱可塑性を有するゴム、樹脂などの有機
高分子材料からなる各種の熱収縮性成形体が知ら
れており、これらの内特にチユーブないし管状体
の開口端部、びん口、あるいは電線の接続端部等
に被着して使用される有底チユーブないしキヤツ
プ状の熱収縮性成形体については、これを製造す
るにあたり、まず熱収縮性を付与できる有機高分
子材料をもつて有底チユーブ状ないしキヤツプ状
の成形体を種々の方法によつて作り、ついで該成
形体に熱収縮性を付与するために、その構成材料
の軟化点以上流動点以下の温度に加熱した状態
で、該成形体中に加圧流体を導入するとか、拡大
用治具を挿入して延伸加工し、ついでこの延伸状
態を保持したまま冷却硬化するという方法が採ら
れている。 Conventionally, various heat-shrinkable molded bodies made of organic polymer materials such as thermoplastic rubber and resin have been known, and among these, they are particularly useful for the open ends of tubes or tubular bodies, bottle mouths, or electrical wire connections. Regarding heat-shrinkable molded products in the form of bottomed tubes or caps that are used by adhering to the ends, etc., in manufacturing them, first, an organic polymeric material capable of imparting heat-shrinkability is used to form a bottomed tube-like product. A molded product in the form of a cap or a cap is made by various methods, and then, in order to impart heat shrinkability to the molded product, the molded product is heated to a temperature above the softening point and below the pour point of the constituent materials. A method is adopted in which a pressurized fluid is introduced into the material, or an expanding jig is inserted thereinto to stretch the material, and then the material is cooled and hardened while maintaining this stretched state.
しかしながら、上記した従来公知の方法では、
成形体を１個あるいは数個づつ所定の金型を用い
て成形している関係で、その一次成形に際して相
当の設備と費用を要するほか、熱収縮性付与のた
めの延伸加工にあたり、加圧流体を用いる場合に
は加圧流体を成形体中に封じ込めるために個々の
成形物についてその開口部を気密封止しなければ
ならないので、その設備が煩雑となるばかりでな
く、手間もかかり、その結果、製品の歩留りがき
わめて低く、コスト高のものとなり、一方、成形
体拡大用治具を用いる場合には、この治具を成形
体に挿入するに先だつて延伸適温に加熱しなけれ
ばならず、またその温度コントロールが煩しく、
その上該治具の挿入時に成形体を無理に押開いた
り、すべらせるために形の乱れやくずれが生じや
すく、所望の寸法精度をもつ拡大成形体が得がた
く、しかもこの挿入操作に多大の時間を要するな
ど種々の不利、欠点を伴なうものであつた。 However, in the conventionally known method described above,
Because each molded product is molded one or several times using a designated mold, considerable equipment and costs are required for the primary molding. When using a pressurized fluid, the openings of each molded product must be hermetically sealed in order to confine the pressurized fluid inside the molded product, which not only makes the equipment complicated but also time-consuming. , the yield of the product is extremely low and the cost is high; on the other hand, when using a jig for expanding the compact, the jig must be heated to an appropriate temperature for stretching before inserting it into the compact; Also, the temperature control is cumbersome,
Moreover, when inserting the jig, the molded body is forced open or slid, which tends to cause the shape to be distorted or deformed, making it difficult to obtain an enlarged molded body with the desired dimensional accuracy. This method is associated with various disadvantages and drawbacks, such as the amount of time required.
本発明はかかる従来公知の製造方法における不
利、欠点の伴なわない新規かつ改良された熱収縮
性有底ゴムチユーブの製造方法を提供するもので
あつて、この第１の発明は所定の長さに切断され
た熱収縮性チユーブの一方の開口端部に硬化性ゴ
ム材料を充填し、該開口端部のみを加熱収縮させ
ると共に該ゴム材料を該開口端部に硬化一体化さ
せることを特徴とするものであり、また、この第
２の発明は所定の長さに切断された熱収縮性チユ
ーブの一方の開口端部のみを加熱収縮させた後、
該縮径開口端部に硬化性ゴム材料を充填して該開
口端部に硬化一体化させることを特徴とするもの
である。 The present invention provides a new and improved method for manufacturing a heat-shrinkable bottomed rubber tube without the disadvantages and drawbacks of the conventionally known manufacturing methods. One of the open ends of the cut heat-shrinkable tube is filled with a curable rubber material, only the open end is heated and shrunk, and the rubber material is hardened and integrated into the open end. Moreover, this second invention heat-shrinks only one open end of a heat-shrinkable tube cut to a predetermined length, and then
A curable rubber material is filled into the diameter-reduced opening end and is cured and integrated into the opening end.
以下、本発明を詳細に説明すると、本発明の熱
収縮性有底ゴムチユーブの製造方法は、予め製作
された熱収縮性チユーブを出発材料として用いる
ものである。したがつて、本発明によれば前記し
た従来法のように予め成形してなる有底チユーブ
状ないしキヤツプ状成形体に熱収縮性を付与する
べく延伸加工するというようなわずらわしさは一
切なく、容易かつ安価に熱収縮性有底ゴムチユー
ブを得ることができるのである。 Hereinafter, the present invention will be explained in detail. The method for manufacturing a heat-shrinkable rubber tube with a bottom according to the present invention uses a heat-shrinkable tube manufactured in advance as a starting material. Therefore, according to the present invention, unlike the conventional method described above, there is no need for the troublesome work of stretching a bottomed tube-like or cap-like molded product formed in advance to impart heat shrinkability. A heat-shrinkable bottomed rubber tube can be obtained easily and inexpensively.
本発明の方法は基本的には所定の長さに切断さ
れて、熱収縮性チユーブの一方の開口端部を封止
するものであり、この開口端部を封止する方法に
は以下の２つがある。 The method of the present invention basically involves sealing one open end of a heat-shrinkable tube by cutting it into a predetermined length. There is one.
まず、第１の方法は、所定長さの熱収縮性チユ
ーブの一方の開口端部に硬化性ゴム材料を充填し
ておいて、該開口端部のみを加熱収縮させると同
時に該充填ゴム材料を該開口端部に硬化一体化さ
せるものであるが、この方法は具体的に次のよう
にして行なわれる。 First, the first method is to fill one open end of a heat-shrinkable tube of a predetermined length with a curable rubber material, heat-shrink only the open end, and at the same time fill the filled rubber material. This method is specifically carried out as follows.
すなわち、まずその第１工程では所定長さに切
断された熱収縮チユーブの一方の端部から、該チ
ユーブの内径にほゞ等しい外径を有するロツド状
支持体を挿入し、他方の開口端部にわずかな空間
を形成する。この場合、上記支持体の外径はチユ
ーブの内径に一致するか、挿入に困難を伴なわな
い程度にやや小さい寸法のものとすることが作業
上好ましいが、しかしその外表面にたとえば油、
水、タルク、二硫化モリブデン等適当な滑剤を少
量塗布するときには、その外径がチユーブ内径よ
りわずかに大きなものであつても差支えない。 That is, in the first step, a rod-shaped support having an outer diameter approximately equal to the inner diameter of the tube is inserted into one end of a heat-shrinkable tube cut to a predetermined length, and the other open end is inserted. form a small space. In this case, it is preferable for the outer diameter of the support to match the inner diameter of the tube, or to be slightly smaller to the extent that insertion is not difficult.
When applying a small amount of a suitable lubricant such as water, talc, or molybdenum disulfide, the outer diameter may be slightly larger than the inner diameter of the tube.
つぎに、その第２工程では上記のようにロツド
状支持体を挿入することによつてチユーブの他方
の開口端部に形成された空間部に硬化性ゴム材料
を充填するのである。ここで用いる硬化性ゴム材
料とは、次工程における開口端部の熱収縮に伴な
つて上記空間内で流動ないし変形し、かつ熱硬化
して該開口端部に一体化する材料を意味するもの
である。 Next, in the second step, the space formed at the other open end of the tube is filled with a curable rubber material by inserting the rod-shaped support as described above. The curable rubber material used here refers to a material that flows or deforms within the space as the opening end is thermally shrunk in the next step, and is then thermally cured and integrated into the opening end. It is.
さらに、その第３工程では上記のように硬化性
ゴム材料を充填したチユーブの開口端部を適正な
温度で加熱収縮させ、同時に充填ゴム材料を硬化
させると共にこれを該開口端に一体化させるので
ある。このようにして開口端が封止されたチユー
ブは、冷却の後チユーブから前記ロツド状支持体
を引抜けば目的とする熱収縮性有底ゴムチユーブ
となるのである。 Furthermore, in the third step, the open end of the tube filled with the curable rubber material is heated and shrunk at an appropriate temperature as described above, and at the same time, the filled rubber material is cured and integrated into the open end. be. The tube whose opening end is sealed in this manner becomes a heat-shrinkable rubber tube with a bottom by pulling out the rod-shaped support from the tube after cooling.
なお、ここでは熱収縮性ゴムチユーブの一方の
開口端部を加熱収縮させるに当つて、他方の開口
部からロツド状支持体を挿入して、その加熱収縮
を部分的におさえるようにした場合について説明
してきたが、これは上記ロツド状支持体を挿入せ
ず、一方の開口端部以外の部分を充分に冷却して
おき、該開口端部の部分的加熱収縮に際して同時
に熱収縮を起さないようにしておく方法を採るこ
ともできるが、しかしこの場合はそのための冷却
手段を別途用意しなければならないので、ロツド
状支持体を用いる方がより工業的な方法とされ
る。 In addition, here we will explain the case where, when heating and shrinking one open end of a heat-shrinkable rubber tube, a rod-shaped support is inserted from the other opening to partially suppress the heat shrinkage. However, this is done by not inserting the rod-shaped support mentioned above, and by sufficiently cooling the parts other than one open end, so as not to cause heat shrinkage at the same time when the open end partially heat-shrinks. However, in this case, a cooling means must be prepared separately, so using a rod-shaped support is considered to be a more industrial method.
つぎに、熱収縮性ゴムチユーブの一方の開口端
を封止するもう１つの方法は、その第１工程で所
定長さの熱収縮性チユーブの一方の開口端部のみ
を部分的に加熱収縮させ、ついでその第２工程で
縮径された開口端部に硬化性ゴム材料を充填して
硬化一体化させるものである。この第２の方法で
もその第１工程においてチユーブの一方の開口端
部のみを部分的に加熱収縮させるに当り、前記第
１の方法で説明したように、他方の開口部からロ
ツド状支持体を挿入するとか、あるいは他方の開
口部側を充分に冷却しておくことが必要とされる
ことはいうまでもない。 Next, another method for sealing one open end of a heat-shrinkable rubber tube is to partially heat-shrink only one open end of a heat-shrinkable tube of a predetermined length in the first step. Then, in the second step, the diameter-reduced opening end is filled with a curable rubber material and cured into one piece. In this second method, when only one opening end of the tube is partially heated and shrunk in the first step, the rod-shaped support is inserted from the other opening, as explained in the first method. Needless to say, it is necessary to sufficiently cool the insertion or the other opening side.
本発明に用い得る熱収縮性チユーブ材料は、加
熱により収縮加能な有機高分子材料であればいか
なるものでもよいが、一般にはたとえばシリコー
ンゴム、シリコーン変性エチレンプロピレンゴ
ム、エチレンプロピレンゴム、クロロプレンゴ
ム、フロロシリコーンゴム、フツ素ゴム、ブチル
ゴムなどの合成ゴムあるいは天然ゴムの中に、た
とえばポリエチレン、アクリル樹脂、オルガノポ
リシロキサン樹脂など一般の熱可塑性樹脂からな
る結晶性樹脂を分散配合させてなるのが適当であ
る。 The heat-shrinkable tube material that can be used in the present invention may be any organic polymeric material that can be shrunk by heating, but generally includes silicone rubber, silicone-modified ethylene propylene rubber, ethylene propylene rubber, chloroprene rubber, It is suitable that a crystalline resin made of a general thermoplastic resin such as polyethylene, acrylic resin, or organopolysiloxane resin is dispersed in synthetic rubber such as fluorosilicone rubber, fluorocarbon rubber, or butyl rubber, or natural rubber. It is.
一方、上記チユーブの開口端部を封止する硬化
性ゴム材料としては、上記材料からなる熱収縮性
チユーブの熱収縮力と温度で変形ないし流動し、
かつ硬化して一体化するものであればよいのであ
るが、これには該チユーブと親和性のある材料、
好ましくは該チユーブ材料と同種のゴム材料を採
用することがよい。 On the other hand, the curable rubber material for sealing the open end of the tube is one that deforms or flows depending on the heat shrinkage force and temperature of the heat-shrinkable tube made of the above-mentioned material.
Any material that can be hardened and integrated is sufficient, but this includes materials that are compatible with the tube,
Preferably, the same type of rubber material as the tube material is used.
以上説明した通り、本発明の方法は予め製作さ
れた熱収縮性のチユーブを出発材料として用い、
その一方の開口端部を硬化性ゴム材料をもつて封
止してなるものであるから、これによれば従来法
のように、予め有底筒状の成形体を得てから個々
の成形体に延伸加工を施して熱収縮性を付与する
場合のような製造上のわずらわしさがないばかり
か、個々の製品に関して熱収縮性にむらの生じる
おそれがなく、製品の歩留りに関しても飛躍的に
向上させることができるので、寸法精度の高い熱
収縮性有底ゴムチユーブを容易かつ安価に得るこ
とができるのである。 As explained above, the method of the present invention uses a prefabricated heat-shrinkable tube as a starting material,
Since one open end is sealed with a curable rubber material, according to this method, unlike the conventional method, a bottomed cylindrical molded body is obtained in advance and then individual molded bodies are formed. Not only is there no manufacturing hassle like applying heat shrinkability through stretching, there is no risk of uneven heat shrinkage for individual products, and product yields are dramatically improved. Therefore, a heat-shrinkable bottomed rubber tube with high dimensional accuracy can be easily and inexpensively obtained.
以下に本発明の実施例を挙げて説明するが、こ
の実施例は本発明を限定するものではない。 EXAMPLES The present invention will be described below with reference to Examples, but these Examples do not limit the present invention.
実施例 １
収縮前の内径が8.0mm、肉厚0.5mmで、収縮後の
内径が4.0mm、肉厚1.0mmである熱収縮性シリコー
ンゴムチユーブST―400G〔信越化学工業(株)商品
名〕を、長さ30mmに切断し、このチユーブの一方
の開口部から円筒状アルミニウム製支持体を25mm
だけ挿入し、他方の開口部には、シリコーンゴム
コンパウンドKE5609U（同社商品名）100重量部
に加硫剤として２，４―ジクロロベンゾイルパー
オキサイド50％重量含有シリコーンオイルペース
ト1.5重量部を均一に混合したものを0.1ｇ封入
し、まず130℃の熱風乾燥器内に５分間放置した
後取出し、冷却後上記支持体を外して、開口部内
径7.5mm、封止部外径６mmの有底ゴムチユーブを
得た。さらに上記封止部の長さ５mmのうち４mmだ
けを切断して底部の肉厚１mmとした熱収縮性有底
ゴムチユーブを得た。Example 1 Heat-shrinkable silicone rubber tube ST-400G (trade name of Shin-Etsu Chemical Co., Ltd.) with an inner diameter of 8.0 mm and a wall thickness of 0.5 mm before shrinkage, and an inner diameter of 4.0 mm and a wall thickness of 1.0 mm after shrinkage. Cut the tube to a length of 30 mm, and insert the cylindrical aluminum support 25 mm from one opening of the tube.
Insert it into the other opening, and evenly mix 100 parts by weight of silicone rubber compound KE5609U (product name of the company) with 1.5 parts by weight of silicone oil paste containing 50% by weight of 2,4-dichlorobenzoyl peroxide as a vulcanizing agent. 0.1g of the sample was sealed and first left in a hot air dryer at 130°C for 5 minutes, then taken out. After cooling, the support was removed and a bottomed rubber tube with an opening inner diameter of 7.5 mm and a sealing part outer diameter of 6 mm was formed. Obtained. Further, only 4 mm of the 5 mm length of the sealing portion was cut to obtain a heat-shrinkable bottomed rubber tube with a bottom wall thickness of 1 mm.
つぎに、上記のようにして得られた有底ゴムチ
ユーブを熱風乾燥器内に入れて加熱収縮させたと
ころ、内径４mm、側壁部および底部の肉厚が１mm
で凹凸のない有底チユーブとなつた。 Next, when the bottomed rubber tube obtained as described above was placed in a hot air dryer and heated to shrink, the inner diameter was 4 mm, and the wall thickness of the side wall and bottom part was 1 mm.
This resulted in a bottomed tube with no unevenness.
実施例 ２
実施例１と同様にして製作した内径7.5mm、側
壁部肉厚0.5mm、底部肉厚１mmの熱収縮性有底シ
リコーンゴムチユーブに、市販のハンダ２ｇを投
入し、底面に溶融固定した。ついでこの有底ゴム
チユーブに、端末部分のみを露出させたビニル被
覆電線を２本平行に挿入し、250℃のホツトエア
を該チユーブに吹付けてチユーブ底のハンダを溶
融させると共にチユーブを加熱収縮させたとこ
ろ、きわめて安定したハンダ付接続が得られた。Example 2 2 g of commercially available solder was poured into a bottomed heat-shrinkable silicone rubber tube with an inner diameter of 7.5 mm, a side wall thickness of 0.5 mm, and a bottom wall thickness of 1 mm, manufactured in the same manner as in Example 1, and melted and fixed to the bottom surface. did. Next, two vinyl-coated electric wires with only the end portions exposed were inserted in parallel into this bottomed rubber tube, and 250°C hot air was blown into the tube to melt the solder at the bottom of the tube and heat-shrink the tube. However, an extremely stable soldered connection was obtained.
実施例 ３
シリコーン変性エチレンプロピレンゴム
SEP1721U〔信越化学工業(株)商品名〕100重量部
に、ポリエチレンパウダー フローセンUF―20
〔製鉄化学工業(株)商品名〕20重量部と、加硫剤と
してジクミルパーオキサイド２重量部を均一に混
合し、40mmΦ押出機にて、内径2.5mm、肉厚１mm
のチユーブを押出し、ついで該チユーブをスチー
ム鑵内に25Kg／cm2（ゲージ圧）、160℃で30分間加
硫した。Example 3 Silicone modified ethylene propylene rubber
SEP1721U [Shin-Etsu Chemical Co., Ltd. trade name] 100 parts by weight, polyethylene powder Frozen UF-20
[Tetsu Kagaku Kogyo Co., Ltd. trade name] 20 parts by weight and 2 parts by weight of dicumyl peroxide as a vulcanizing agent were mixed uniformly, and the mixture was made into a product with an inner diameter of 2.5 mm and a wall thickness of 1 mm using a 40 mmΦ extruder.
The tube was extruded and then vulcanized in a steam iron at 25 kg/cm 2 (gauge pressure) at 160° C. for 30 minutes.
つぎに、上記で得られたチユーブ５ｍを120℃
に加熱し、そのままの状態でチユーブ内に５Kg／
cm2の空気圧をかけて延伸加工し、ついでその圧力
を保持したまま室温まで冷却し、内径５mm、肉厚
0.5mmの熱収縮性チユーブを得た。 Next, heat the 5 m tube obtained above to 120°C.
Heat it to
Stretched by applying air pressure of cm2 , then cooled to room temperature while maintaining that pressure, and made into a shape with an inner diameter of 5 mm and a wall thickness of
A 0.5mm heat-shrinkable tube was obtained.
上記熱収縮性チユーブを30mmの長さに切断し、
一方の開口部をドライアイスで冷却しながら、他
方の開口部を室温硬化型シリコーンゴムKE―
45RTV〔信越化学工業(株)商品名〕で封止して、
この封止部を120℃のホツトエアで加熱収縮さ
せ、該封止部を充分収縮させた後で、室温下に一
昼夜放置して封止剤を充分硬化させ、目的とする
熱収縮性有底ゴムチユーブを得た。 Cut the above heat-shrinkable tube into a length of 30 mm,
While cooling one opening with dry ice, seal the other opening with room-temperature-curing silicone rubber.
Seal with 45RTV [trade name of Shin-Etsu Chemical Co., Ltd.],
This sealing part is heat-shrinked with hot air at 120°C, and after the sealing part is sufficiently shrunk, it is left at room temperature overnight to fully cure the sealant, and the desired heat-shrinkable bottomed rubber tube is produced. I got it.
上記有底チユーブを120℃の温度で加熱収縮さ
せたところ、開口部の内径を延伸加工前と同じ
2.5mmとすることができた。 When the bottomed tube above was heat-shrinked at a temperature of 120℃, the inner diameter of the opening was the same as before stretching.
It was possible to make it 2.5mm.
実施例 ４
実施例１で使用したと同じ長さ30mmの加熱収縮
性シリコーンゴムチユーブの一方の開口端部５mm
だけを、市販のヒートシーラーを用いて130℃で
部分的に加熱収縮させた。つぎに、この縮径開口
端面を市販の粘着テープに接合して垂直に支持
し、その上端開口部から室温硬化性シリコーンゴ
ムKE―45RTVを注入して上記縮径部分にのみ充
填し、これを一昼夜室温下に放置した。Example 4 One open end of a heat-shrinkable silicone rubber tube with the same length of 30 mm as used in Example 1 was 5 mm.
This was partially heat-shrinked at 130°C using a commercially available heat sealer. Next, the end surface of this diameter-reduced opening is joined to a commercially available adhesive tape and supported vertically, and room-temperature curable silicone rubber KE-45RTV is injected from the upper end opening to fill only the diameter-reduced portion. It was left at room temperature overnight.
封止部が硬化した後、上記チユーブを粘着テー
プから外して目的の加熱収縮性有底チユーブを得
た。 After the sealing portion was cured, the tube was removed from the adhesive tape to obtain the desired heat-shrinkable bottomed tube.
引き続き、この有底チユーブを130℃で加熱し
たところ、全長にわたつて均一な太さのキヤツプ
状チユーブとなつた。 Subsequently, when this bottomed tube was heated at 130°C, it became a cap-shaped tube with a uniform thickness over its entire length.
Claims (1)
一方の開口端部に硬化性ゴム材料を充填し、該開
口端部のみを加熱収縮させると共に該ゴム材料を
該開口端部に硬化一体化させることを特徴とする
熱収縮性有底ゴムチユーブの製造方法。 ２ 所定の長さに切断された熱収縮性チユーブの
一方の開口端部のみを加熱収縮させた後、該縮径
開口端部に硬化性ゴム材料を充填して該開口端部
に硬化一体化させることを特徴とする熱収縮性有
底ゴムチユーブの製造方法。[Scope of Claims] 1. One open end of a heat-shrinkable tube cut to a predetermined length is filled with a curable rubber material, only the open end is heated and shrunk, and the rubber material is inserted into the opening. A method for producing a heat-shrinkable rubber tube with a bottom, characterized in that the end portions are hardened and integrated. 2. After heating and shrinking only one open end of the heat-shrinkable tube cut to a predetermined length, the diameter-reduced open end is filled with a curable rubber material and the open end is cured and integrated. A method for producing a heat-shrinkable rubber tube with a bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10398680A JPS5729440A (en) | 1980-07-29 | 1980-07-29 | Manufacture of heat-shrinkable rubber tube with bottom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10398680A JPS5729440A (en) | 1980-07-29 | 1980-07-29 | Manufacture of heat-shrinkable rubber tube with bottom |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5729440A JPS5729440A (en) | 1982-02-17 |
| JPS6248569B2 true JPS6248569B2 (en) | 1987-10-14 |
Family
ID=14368624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10398680A Granted JPS5729440A (en) | 1980-07-29 | 1980-07-29 | Manufacture of heat-shrinkable rubber tube with bottom |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5729440A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4858951A (en) * | 1988-05-04 | 1989-08-22 | Trw Vehicle Safety Systems, Inc. | Igniter for gas generating material |
| JP4780650B2 (en) * | 2006-01-26 | 2011-09-28 | 株式会社トヨックス | End surface structure of reinforcing hose, end surface processing method thereof, and hose end surface processing kit |
-
1980
- 1980-07-29 JP JP10398680A patent/JPS5729440A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5729440A (en) | 1982-02-17 |
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