JP3069968B2 - Hose manufacturing method and apparatus - Google Patents

Hose manufacturing method and apparatus

Info

Publication number
JP3069968B2
JP3069968B2 JP3064273A JP6427391A JP3069968B2 JP 3069968 B2 JP3069968 B2 JP 3069968B2 JP 3064273 A JP3064273 A JP 3064273A JP 6427391 A JP6427391 A JP 6427391A JP 3069968 B2 JP3069968 B2 JP 3069968B2
Authority
JP
Japan
Prior art keywords
hose
resin
polymethylpentene resin
polymethylpentene
hopper
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 - Lifetime
Application number
JP3064273A
Other languages
Japanese (ja)
Other versions
JPH04299107A (en
Inventor
茂 五十嵐
悟司 足立
博史 谷村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yokohama Rubber Co Ltd
Original Assignee
Yokohama Rubber Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Application filed by Yokohama Rubber Co Ltd filed Critical Yokohama Rubber Co Ltd
Priority to JP3064273A priority Critical patent/JP3069968B2/en
Publication of JPH04299107A publication Critical patent/JPH04299107A/en
Application granted granted Critical
Publication of JP3069968B2 publication Critical patent/JP3069968B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、ポリメチルペンテン樹
脂を被覆材として用いるホースの製造方法およびその装
置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for manufacturing a hose using a polymethylpentene resin as a coating material.

【0002】[0002]

【従来の技術】従来、未加硫ゴム組成物からなるホース
成形体を加硫してホースを製造する場合に、加硫時にゴ
ム組成物の発泡を抑えたりホース成形体の形状を保持し
たりする等のために、ホース成形体の外周面を熱可塑性
の耐熱性樹脂で被覆している。そして、この耐熱性樹脂
としては、ポリメチルペンテン樹脂が広く採用されてい
る。ポリメチルペンテン樹脂は、耐熱性・離型性がよ
く、かつ水分吸収性が非常に低いため無乾燥で使用でき
る等の利点があるからである。
2. Description of the Related Art Conventionally, when a hose molded body made of an unvulcanized rubber composition is vulcanized to produce a hose, foaming of the rubber composition is suppressed during vulcanization or the shape of the hose molded body is maintained. For example, the outer peripheral surface of the hose molded body is covered with a thermoplastic heat-resistant resin. As this heat-resistant resin, polymethylpentene resin is widely used. This is because polymethylpentene resin has advantages such as good heat resistance and releasability, and very low water absorption, so that it can be used without drying.

【0003】このポリメチルペンテン樹脂は、複数回繰
り返して使用される(リサイクル使用)。すなわち、ホ
ース成形体の外周面を被覆してホース成形体を加硫して
ホースとした後、そのホースから剥離除去し、再びホー
ス成形体の外周面を被覆するという手順が繰り返され
る。これは、ポリメチルペンテン樹脂が高価である等の
ために、ポリメチルペンテン樹脂の有効利用をはかるた
めである。
[0003] This polymethylpentene resin is repeatedly used a plurality of times (recycle use). That is, the procedure of covering the outer peripheral surface of the hose molded body, vulcanizing the hose molded body into a hose, peeling and removing the hose from the hose, and covering the outer peripheral surface of the hose molded body again is repeated. This is because the polymethylpentene resin is expensive and the like, so that the polymethylpentene resin can be effectively used.

【0004】しかしながら、ポリメチルペンテン樹脂で
ホース成形体の外周面を被覆してホース成形体の加硫を
行うとホース成形体を構成するゴム組成物中の可塑剤等
の揮発性成分がポリメチルペンテン樹脂に移行するの
で、ポリメチルペンテン樹脂のリサイクル使用によりこ
の揮発性成分がポリメチルペンテン樹脂内に蓄積される
ことになる。このため、リサイクル使用回数が増えるに
つれてこの蓄積量が増大し、これがホース成形体の外周
面に悪影響を及ぼし、ホース成形体の外周面に凹凸が生
じるなどの問題が発生してしまう。この問題を避けるた
めには、リサイクル使用回数を低減してホース成形体の
外周面に凹凸等の異常が発生する前にポリメチルペンテ
ン樹脂を廃棄しなければならなかった。
[0004] However, when the outer peripheral surface of the hose molded body is covered with polymethylpentene resin and vulcanization of the hose molded body is performed, volatile components such as a plasticizer in a rubber composition constituting the hose molded body become polymethylpentene. The volatile component will be accumulated in the polymethylpentene resin due to the recycle use of the polymethylpentene resin because the resin is transferred to the pentene resin. For this reason, as the number of times of recycling increases, the accumulated amount increases, which has an adverse effect on the outer peripheral surface of the hose molded body, and causes problems such as unevenness on the outer peripheral surface of the hose molded body. In order to avoid this problem, the polymethylpentene resin has to be discarded before the occurrence of irregularities or the like on the outer peripheral surface of the hose molded body by reducing the number of times of recycling.

【0005】[0005]

【発明が解決しようとする課題】本発明は、ポリメチル
ペンテン樹脂を未加硫ゴム組成物からなるホース成形体
の外周面の被覆に用いるホースの製造方法およびその装
置であって、ポリメチルペンテン樹脂のリサイクル使用
回数を高めてポリメチルペンテン樹脂の有効利用をはか
ることができるホースの製造方法およびその装置を提供
することを目的とする。
SUMMARY OF THE INVENTION The present invention relates to a method and an apparatus for producing a hose using a polymethylpentene resin for coating the outer peripheral surface of a hose formed from an unvulcanized rubber composition. It is an object of the present invention to provide a hose manufacturing method and an apparatus thereof capable of increasing the number of times the resin is recycled and using polymethylpentene resin effectively.

【0006】[0006]

【課題を解決するための手段】本発明は、未加硫ゴム組
成物からなるホース成形体の外周面をポリメチルペンテ
ン樹脂で被覆した後に前記ホース成形体を加硫し、つい
で前記ポリメチルペンテン樹脂を剥離除去するホースの
製造方法において、剥離除去されたポリメチルペンテン
樹脂を、加熱して内部の揮発性成分を蒸発除去した後
に、再度、未加硫ゴム組成物からなるホース成形体の外
周面の被覆に使用することを特徴とする。
According to the present invention, there is provided a hose molded article comprising an unvulcanized rubber composition, the outer peripheral surface of which is coated with a polymethylpentene resin, and then the hose molded article is vulcanized. In the method for producing a hose for stripping and removing a resin, the stripped and removed polymethylpentene resin is heated to evaporate and remove internal volatile components, and then, again, the outer periphery of a hose molded body made of an unvulcanized rubber composition It is characterized by being used for surface coating.

【0007】このように本発明では、剥離除去されたポ
リメチルペンテン樹脂を加熱して内部の揮発性成分を蒸
発除去した後に再利用するために、揮発性成分が内部に
蓄積されないからポリメチルペンテン樹脂のリサイクル
使用回数を高めることができる。また、本発明は、未加
硫ゴム組成物からなるホース成形体の外周面をポリメチ
ルペンテン樹脂で被覆するための樹脂押出機からなり、
外周面をポリメチルペンテン樹脂で被覆されたホース成
形体は加硫装置で加硫され、加硫後においてポリメチル
ペンテン樹脂は樹脂剥離装置で剥離除去されるホースの
製造装置において、前記樹脂押出機にホッパを付設し、
該ホッパに加熱手段を配置して該ホッパ内に導入される
ポリメチルペンテン樹脂を加熱するようにしたことを特
徴とする。
As described above, according to the present invention, the polymethylpentene resin which has been peeled and removed is reused after heating to remove the volatile components inside, so that the volatile components are not accumulated inside the polymethylpentene resin. It is possible to increase the number of times resin is recycled. Further, the present invention comprises a resin extruder for coating the outer peripheral surface of a hose molded body made of an unvulcanized rubber composition with a polymethylpentene resin,
A hose molding device in which an outer peripheral surface is coated with a polymethylpentene resin is vulcanized by a vulcanizing device, and after the vulcanization, the polymethylpentene resin is peeled off by a resin peeling device. With a hopper,
A heating means is disposed in the hopper to heat the polymethylpentene resin introduced into the hopper.

【0008】本発明の製造装置では、このように樹脂押
出機にホッパを付設したために、ホッパ内でポリメチル
ペンテン樹脂を加熱して内部の揮発性成分を蒸発除去し
た後に樹脂押出機に連続的に送り込むことができるの
で、ポリメチルペンテン樹脂のリサイクル使用回数を高
めることができると共にホースを連続的に製造すること
が可能となる。
In the manufacturing apparatus of the present invention, since the hopper is attached to the resin extruder in this manner, the polymethylpentene resin is heated in the hopper to evaporate and remove the volatile components therein, and then continuously connected to the resin extruder. Therefore, the number of times the polymethylpentene resin is recycled can be increased, and the hose can be manufactured continuously.

【0009】以下、図を参照して本発明の構成につき詳
しく説明する。図1はホース成形体の一例の外周面をポ
リメチルペンテン樹脂で被覆した様子を示す一部切り欠
き斜視図である。図1において、ホース成形体1は内面
ゴム管2とその外側に配置された補強層3とその外側に
配置された外面ゴム管4とからなる。内面ゴム管2およ
び外面ゴム管4は、それぞれ、未加硫ゴム組成物から構
成される。この未加硫ゴム組成物は、天然ゴム又は各種
合成ゴムに硫黄等の配合剤を配合してなるホース用の通
常の配合物である。また、補強層3は、鋼線又は合成繊
維糸を編組或いは螺旋状に巻回してなる。
Hereinafter, the configuration of the present invention will be described in detail with reference to the drawings. FIG. 1 is a partially cutaway perspective view showing a state in which an outer peripheral surface of an example of a hose molded body is covered with a polymethylpentene resin. In FIG. 1, a hose molded body 1 includes an inner rubber tube 2, a reinforcing layer 3 disposed outside the inner rubber tube 2, and an outer rubber tube 4 disposed outside the same. The inner rubber tube 2 and the outer rubber tube 4 are each composed of an unvulcanized rubber composition. This unvulcanized rubber composition is a normal compound for hoses obtained by compounding a compounding agent such as sulfur with natural rubber or various synthetic rubbers. The reinforcing layer 3 is formed by winding a steel wire or a synthetic fiber yarn into a braid or a spiral.

【0010】ホース成形体1の外周面は、ポリメチルペ
ンテン樹脂5で被覆されている。6は合成樹脂製のマン
ドレルである。ポリメチルペンテン樹脂5としては、一
般に市販されているポリメチルペンテン樹脂を用いれば
よい。ホースは、ポリメチルペンテン樹脂5で被覆され
たホース成形体1を常法により加硫することによって製
造される。ポリメチルペンテン樹脂5は、加硫後にホー
スから剥離除去される。この剥離除去は、例えば、ポリ
メチルペンテン樹脂5を60℃程度に加熱して若干軟化さ
せ、ついで切除することにより行えばよい。除去後のポ
リメチルペンテン樹脂5は粉砕し、加熱して内部の可塑
剤等の揮発性成分を蒸発除去した後に、再びホース成形
体1の被覆にリサイクル使用される。この場合の加熱
は、120 ℃以上、好ましくは135 ℃〜180 ℃の温度範囲
で行えばよい。135 ℃未満では揮発性成分の蒸発除去が
十分でなく、180 ℃を超えるとポリメチルペンテン樹脂
がブロッキングを起こすためポリメチルペンテン樹脂を
樹脂押出機から押し出してホース成形体1の被覆に供す
ることができなくなるからである。なお、リサイクル使
用に際しては、ポリメチルペンテン樹脂5の加熱による
揮発性成分の除去を毎回毎に又は複数回毎に行えばよ
い。
The outer peripheral surface of the molded hose 1 is covered with a polymethylpentene resin 5. Reference numeral 6 denotes a mandrel made of a synthetic resin. As the polymethylpentene resin 5, a commercially available polymethylpentene resin may be used. The hose is manufactured by vulcanizing the hose molded body 1 coated with the polymethylpentene resin 5 by a conventional method. The polymethylpentene resin 5 is peeled off from the hose after vulcanization. This separation and removal may be performed, for example, by heating the polymethylpentene resin 5 to about 60 ° C. to soften it a little, and then cutting it off. After removal, the polymethylpentene resin 5 is pulverized and heated to evaporate and remove volatile components such as a plasticizer therein, and then recycled for coating the hose molded body 1 again. In this case, the heating may be performed at a temperature of 120 ° C. or higher, preferably 135 ° C. to 180 ° C. If the temperature is lower than 135 ° C, the volatile components are not sufficiently removed by evaporation. If the temperature exceeds 180 ° C, the polymethylpentene resin causes blocking, so that the polymethylpentene resin can be extruded from a resin extruder to be used for coating the hose molding 1. It is not possible. At the time of recycling, the volatile components may be removed by heating the polymethylpentene resin 5 every time or plural times.

【0011】図2に、このようにホースを製造する場合
に用いる装置を部分的に示す。図2において、10はポリ
メチルペンテン樹脂を収容した樹脂押出機であって、矢
印tの方向に移動するホース成形体1の外周面にポリメ
チルペンテン樹脂を加熱下に溶融状態で押し出して被覆
を行うためのものである(ポリメチルペンテン樹脂の融
点は230 ℃) 。ポリメチルペンテン樹脂で被覆されたホ
ース成形体1は冷却槽11で冷却されてポリメチルペンテ
ン樹脂を固化させた後、加硫装置(図示せず)で常法に
より加硫される。加硫後において、ポリメチルペンテン
樹脂は樹脂剥離装置(図示せず)で常法によりホースか
ら剥離除去される。
FIG. 2 partially shows an apparatus used for manufacturing the hose in this manner. In FIG. 2, reference numeral 10 denotes a resin extruder containing a polymethylpentene resin, which extrudes the polymethylpentene resin in a molten state under heating to coat the outer peripheral surface of the hose molded body 1 moving in the direction of arrow t. (The melting point of the polymethylpentene resin is 230 ° C.). The hose molded body 1 coated with the polymethylpentene resin is cooled in the cooling bath 11 to solidify the polymethylpentene resin, and then vulcanized by a vulcanizing apparatus (not shown) by a conventional method. After vulcanization, the polymethylpentene resin is peeled off from the hose by a conventional method using a resin peeling device (not shown).

【0012】樹脂押出機10にはホッパ12が付設されてい
る。このホッパ12には、電熱ヒータ等の加熱手段が配置
されている。この加熱手段の配置は、ホッパ12の内外い
ずれの箇所であってもよい。また、ホッパ12内には適宜
の攪拌手段を設け、ゆるやかに攪拌を行うようにするの
がよい。ホッパ12内には、剥離除去後のポリメチルペン
テン樹脂が導入される。ポリメチルペンテン樹脂は、ホ
ッパ12内で加熱され、内部の揮発性成分が蒸発除去され
た後に連続的に樹脂押出機10内に導入される。ついで、
樹脂押出機10から押し出され、連続的にホース成形体1
の外周面に被覆される。
A hopper 12 is attached to the resin extruder 10. The hopper 12 is provided with a heating means such as an electric heater. The arrangement of the heating means may be anywhere inside or outside the hopper 12. Further, it is preferable to provide a suitable stirring means in the hopper 12 so as to perform gentle stirring. Into the hopper 12, the polymethylpentene resin after peeling and removal is introduced. The polymethylpentene resin is heated in the hopper 12, and is introduced into the resin extruder 10 continuously after the volatile components in the hopper 12 are removed by evaporation. Then
Extruded from the resin extruder 10 and continuously formed into a hose 1
Is coated on the outer peripheral surface.

【0013】ホッパ12の容量は200 〜500 リットル、加
熱温度は135 〜180 ℃、ポリメチルペンテン樹脂のホッ
パ内滞留時間は2〜4時間とするとよい。例えば、ホッ
パ容量400 リットル、加熱温度150 ℃、ポリメチルペン
テン樹脂のホッパ内滞留時間2時間とすれば、ホース製
造工程において被覆材ポリメチルペンテン樹脂の押出量
180 kg/hr で、外径18 mm のホースの外周に厚さ4mmの
被覆を、12メータ/ 分の速度で、ホースの連続被覆を行
うことが可能である。ポリメチルペンテン樹脂の加熱
は、すべてをホッパ内で行わなくともよく、その一部又
は大部分をホッパに近設した予備加熱装置で行えば、そ
の分だけホッパの容量を軽減することができる。
The capacity of the hopper 12 is preferably 200 to 500 liters, the heating temperature is 135 to 180 ° C., and the residence time of the polymethylpentene resin in the hopper is preferably 2 to 4 hours. For example, if the hopper capacity is 400 liters, the heating temperature is 150 ° C., and the residence time of the polymethylpentene resin in the hopper is 2 hours, the extrusion rate of the coating material polymethylpentene resin in the hose manufacturing process is determined.
At 180 kg / hr, it is possible to coat the outer circumference of a hose with an outer diameter of 18 mm and a thickness of 4 mm at a rate of 12 meters / minute. The heating of the polymethylpentene resin does not have to be entirely performed in the hopper, and if a part or most of the heating is performed by the preliminary heating device provided near the hopper, the capacity of the hopper can be reduced correspondingly.

【0014】[0014]

【実施例】下記のホース成形体の外周面に下記の押出条
件でポリメチルペンテン樹脂(三井石油化学製TPX)
を押し出して被覆を行い、これを150 ℃×60分の加硫条
件下に加硫した。加硫後、得られるホースからポリメチ
ルペンテン樹脂を剥離除去し、2〜5mmに粉砕してリサ
イクル使用に供した。
EXAMPLE A polymethylpentene resin (TPX manufactured by Mitsui Petrochemical) was applied to the outer peripheral surface of the following molded hose under the following extrusion conditions.
Was extruded to perform coating, and this was vulcanized under vulcanization conditions of 150 ° C. × 60 minutes. After vulcanization, the polymethylpentene resin was peeled off from the obtained hose, crushed to 2 to 5 mm, and supplied for recycling.

【0015】このリサイクル使用に際して、ポリメチル
ペンテン樹脂に揮発性成分除去のための加熱処理を施さ
ない場合、および5回リサイクル使用毎に110 ℃、120
℃、135 ℃、150 ℃、165 ℃、180 ℃、200 ℃の加熱処
理を電気オーブンで各8時間実施した場合の実施可能な
リサイクル使用回数について評価した。この結果を表1
に示す。
At the time of this recycling use, when the polymethylpentene resin is not subjected to a heat treatment for removing volatile components, and at 110 ° C., 120
C., 135.degree. C., 150.degree. C., 165.degree. C., 180.degree. C., 200.degree. Table 1 shows the results.
Shown in

【0016】ホース成形体 内面ゴム管 ; NBR系、内径9.5 mm 補強層 ; 直径0.3 mmのブラスメッ
キスチールワイヤ 外面ゴム管 ; CR系、外径18.0 mm押出条件 押出機 ; 三葉製作所製の直径120
mmの押出機 シリンダー温度 ; 250 ℃〜255 ℃ ヘッド温度 ; 260 ℃
The hose shaped body inner rubber tube; NBR system, inner diameter 9.5 mm reinforcing layer; brass-plated steel wire outer rubber tube having a diameter of 0.3 mm; CR system, the outer diameter 18.0 mm extrusion conditions extruder; Mitsubaseisakujo made of diameter 120
mm extruder Cylinder temperature; 250 ° C ~ 255 ° C Head temperature; 260 ° C

【0017】 [0017]

【0018】表1から判るように、加熱処理を行わない
でポリメチルペンテン樹脂をリサイクル使用してホース
を製造した結果、リサイクル使用15回時点から押出異常
が発生し始め、リサイクル使用20回時点では連続した押
出異常となり、ポリメチルペンテン樹脂使用不可能とな
った(比較例1)。110℃の加熱処理ではリサイクル使
用21回時点で押出異常が連続的に多発した(比較例
2)。120 ℃の加熱処理ではリサイクル使用30回時点で
押出異常が連続的に多発した(実施例1)。135 ℃、15
0 ℃、165 ℃の加熱処理ではリサイクル使用45回時点で
も押出異常が発生しなかった(実施例2、実施例3、実
施例4)。180 ℃の加熱処理ではリサイクル使用41回時
点で溶融粘度が低くなり過ぎ、被覆成型ができなくなっ
た(実施例5)。200 ℃の加熱処理ではブロッキングが
発生したため押出被覆は実施しなかった(比較例3)。
As can be seen from Table 1, as a result of manufacturing hoses by recycling polymethylpentene resin without performing heat treatment, extrusion abnormalities began to occur at 15 times of recycling and at 20 times of recycling, Continuous extrusion abnormalities occurred, and polymethylpentene resin could not be used (Comparative Example 1). In the heat treatment at 110 ° C., the extrusion abnormality occurred continuously and frequently at 21 times of the recycling use (Comparative Example 2). In the heat treatment at 120 ° C., extrusion abnormality occurred continuously and frequently at the time of recycle use 30 times (Example 1). 135 ° C, 15
In the heat treatment at 0 ° C. and 165 ° C., no extrusion abnormality occurred even at the time of the 45th recycle use (Examples 2, 3 and 4). With the heat treatment at 180 ° C., the melt viscosity was too low at the time of 41 recycling uses, and coating molding could not be performed (Example 5). Extrusion coating was not performed due to blocking in the heat treatment at 200 ° C. (Comparative Example 3).

【0019】[0019]

【発明の効果】以上説明したように本発明によれば、剥
離除去されたポリメチルペンテン樹脂を、加熱して内部
の揮発性成分を蒸発除去した後に、再度、未加硫ゴム組
成物からなるホース成形体の外周面の被覆に使用するた
め、ポリメチルペンテン樹脂のリサイクル使用回数が大
幅に向上するので省資源・コスト低減が可能となる。ま
た、樹脂押出機にホッパを付設し、該ホッパに加熱手段
を配置して該ホッパ内に導入されるポリメチルペンテン
樹脂を加熱するようにしたために、ポリメチルペンテン
樹脂のリサイクル使用回数の向上に加えてホースの連続
的製造が可能となる。そして、この樹脂押出機はベント
機構がなくても押出異常が発生しないため設備コストを
抑えることができる。本発明は、低圧用ホースから高圧
用ホースに至るまで、広くホースの製造に適用可能であ
る。
As described above, according to the present invention, the peeled and removed polymethylpentene resin is heated to remove the volatile components therein, and then is again made of the unvulcanized rubber composition. Since it is used for coating the outer peripheral surface of the hose molded body, the number of times the polymethylpentene resin is recycled is greatly improved, so that resources can be saved and costs can be reduced. In addition, a hopper is attached to the resin extruder, and a heating means is arranged in the hopper to heat the polymethylpentene resin introduced into the hopper. In addition, continuous production of hoses is possible. And since this resin extruder does not cause an extrusion abnormality even without a vent mechanism, equipment costs can be reduced. INDUSTRIAL APPLICABILITY The present invention is widely applicable to the manufacture of hoses, from low pressure hoses to high pressure hoses.

【図面の簡単な説明】[Brief description of the drawings]

【図1】ホース成形体の一例の外周面をポリメチルペン
テン樹脂で被覆した様子を示す一部切り欠き斜視図であ
る。
FIG. 1 is a partially cutaway perspective view showing a state in which an outer peripheral surface of an example of a hose molded body is covered with a polymethylpentene resin.

【図2】ホースの製造装置を部分的に示す説明図であ
る。
FIG. 2 is an explanatory view partially showing a hose manufacturing apparatus.

【符号の説明】[Explanation of symbols]

1 ホース成形体 2 内面ゴム管 3 補強層
4 外面ゴム管 5 ポリメチルペンテン樹脂 10 樹脂押出機 12
ホッパ
DESCRIPTION OF SYMBOLS 1 Hose molding 2 Inner rubber pipe 3 Reinforcement layer
4 External rubber tube 5 Polymethylpentene resin 10 Resin extruder 12
Hopper

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭63−297034(JP,A) 特開 平4−232005(JP,A) 特開 昭63−182136(JP,A) 特開 昭61−290011(JP,A) 特開 昭61−72507(JP,A) 実開 平2−88713(JP,U) (58)調査した分野(Int.Cl.7,DB名) B29C 35/00 - 35/14 B29C 33/02 - 33/08 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-297034 (JP, A) JP-A-4-232005 (JP, A) JP-A-63-182136 (JP, A) JP-A-61-1986 290011 (JP, A) JP-A-61-72507 (JP, A) JP-A-2-88713 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) B29C 35/00-35 / 14 B29C 33/02-33/08

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 未加硫ゴム組成物からなるホース成形体
の外周面をポリメチルペンテン樹脂で被覆した後に前記
ホース成形体を加硫し、ついで前記ポリメチルペンテン
樹脂を剥離除去するホースの製造方法において、剥離除
去されたポリメチルペンテン樹脂を、加熱して内部の揮
発性成分を蒸発除去した後に、再度、未加硫ゴム組成物
からなるホース成形体の外周面の被覆に使用するホース
の製造方法。
1. A method of manufacturing a hose, comprising coating an outer peripheral surface of a hose molded body made of an unvulcanized rubber composition with a polymethylpentene resin, vulcanizing the hose molded body, and peeling off the polymethylpentene resin. In the method, after the stripped and removed polymethylpentene resin is heated to evaporate and remove volatile components therein, again, the hose used for coating the outer peripheral surface of the hose molded body made of the unvulcanized rubber composition is used. Production method.
【請求項2】 未加硫ゴム組成物からなるホース成形体
の外周面をポリメチルペンテン樹脂で被覆するための樹
脂押出機からなり、外周面をポリメチルペンテン樹脂で
被覆されたホース成形体は加硫装置で加硫され、加硫後
においてポリメチルペンテン樹脂は樹脂剥離装置で剥離
除去されるホースの製造装置において、前記樹脂押出機
にホッパを付設し、該ホッパに加熱手段を配置して該ホ
ッパ内に導入されるポリメチルペンテン樹脂を加熱する
ようにしたホースの製造装置。
2. A hose molded product comprising an unvulcanized rubber composition and a resin extruder for coating an outer peripheral surface of the hose molded product with a polymethylpentene resin, wherein the outer peripheral surface of the hose molded product is coated with a polymethylpentene resin. In a hose manufacturing apparatus which is vulcanized by a vulcanizing apparatus and after the vulcanization, the polymethylpentene resin is peeled and removed by a resin peeling apparatus, a hopper is attached to the resin extruder, and a heating means is arranged in the hopper. A hose manufacturing apparatus for heating polymethylpentene resin introduced into the hopper.
JP3064273A 1991-03-28 1991-03-28 Hose manufacturing method and apparatus Expired - Lifetime JP3069968B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3064273A JP3069968B2 (en) 1991-03-28 1991-03-28 Hose manufacturing method and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3064273A JP3069968B2 (en) 1991-03-28 1991-03-28 Hose manufacturing method and apparatus

Publications (2)

Publication Number Publication Date
JPH04299107A JPH04299107A (en) 1992-10-22
JP3069968B2 true JP3069968B2 (en) 2000-07-24

Family

ID=13253445

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3064273A Expired - Lifetime JP3069968B2 (en) 1991-03-28 1991-03-28 Hose manufacturing method and apparatus

Country Status (1)

Country Link
JP (1) JP3069968B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004083465A1 (en) * 2003-03-19 2004-09-30 Nippon Steel Corporation Grain-oriented magnetic steel sheet excellent in magnetic characteristic and its manufacturing method

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
JP4982955B2 (en) * 2005-03-11 2012-07-25 横浜ゴム株式会社 Supply processing equipment for resin-coated members for rubber hose vulcanization

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004083465A1 (en) * 2003-03-19 2004-09-30 Nippon Steel Corporation Grain-oriented magnetic steel sheet excellent in magnetic characteristic and its manufacturing method
CN100402673C (en) * 2003-03-19 2008-07-16 新日本制铁株式会社 Grain-oriented magnetic steel sheet excellent in magnetic characteristic and its manufacturing method
US7442260B2 (en) 2003-03-19 2008-10-28 Nippon Steel Corooration Grain-oriented electrical steel sheet superior in electrical characteristics and method of production of same
JP4510757B2 (en) * 2003-03-19 2010-07-28 新日本製鐵株式会社 Oriented electrical steel sheet with excellent magnetic properties and manufacturing method thereof

Also Published As

Publication number Publication date
JPH04299107A (en) 1992-10-22

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