JPH02120029A - Manufacture of hose - Google Patents
Manufacture of hoseInfo
- Publication number
- JPH02120029A JPH02120029A JP63273228A JP27322888A JPH02120029A JP H02120029 A JPH02120029 A JP H02120029A JP 63273228 A JP63273228 A JP 63273228A JP 27322888 A JP27322888 A JP 27322888A JP H02120029 A JPH02120029 A JP H02120029A
- Authority
- JP
- Japan
- Prior art keywords
- mandrel
- hose
- moisture content
- inner tube
- resin
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 239000011347 resin Substances 0.000 claims abstract description 49
- 229920005989 resin Polymers 0.000 claims abstract description 49
- 238000000034 method Methods 0.000 claims abstract description 46
- 229920001971 elastomer Polymers 0.000 claims abstract description 19
- 238000001035 drying Methods 0.000 claims abstract description 15
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 15
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 4
- 238000009954 braiding Methods 0.000 abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 238000001125 extrusion Methods 0.000 abstract description 8
- 230000002950 deficient Effects 0.000 abstract description 7
- 238000004064 recycling Methods 0.000 abstract description 2
- 230000000063 preceeding effect Effects 0.000 abstract 1
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 27
- 229920000571 Nylon 11 Polymers 0.000 description 8
- 229920002292 Nylon 6 Polymers 0.000 description 8
- 239000004677 Nylon Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 229920001778 nylon Polymers 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000000605 extraction Methods 0.000 description 4
- 238000004073 vulcanization Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000003109 Karl Fischer titration Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、ホースの製造方法に係わり、更に詳しくは
製造工程中の不具合を低減して、ホースの生産性を向上
させると共に、安定した製品を製造することが出来るホ
ースの製造方法に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for manufacturing a hose, and more specifically, it reduces defects during the manufacturing process, improves the productivity of the hose, and produces a stable product. The present invention relates to a method for manufacturing a hose that can manufacture a hose.
従来、ナイロン等の樹脂マンドレルを用いたホースの製
造方法としては、例えば、第２図に示すように、内管押
出し工程、補強層編組工程。Conventionally, methods for manufacturing hoses using resin mandrels such as nylon include, for example, an inner tube extrusion process and a reinforcing layer braiding process, as shown in FIG.
外管押出し工程から成る成型工程と、ラフピング工程ま
たは被鉛工程、加圧加硫工程、アンラッピング工程又は
剥鉛工程から成る加硫工程と、マンドレル抜き工程、コ
イリング・梱包工程とを経て成型される。またマンドレ
ルの抜き工程では、水圧を利用して抜き取り、そしてマ
ンドレルを巻取り装置で巻取った後、再びマンドレル離
型処理を行って、上記の工程を繰返し行うことで、ホー
スを製造するものである。It is molded through a molding process consisting of an outer tube extrusion process, a vulcanization process consisting of a roughing process, a lead-covering process, a pressure vulcanization process, an unwrapping process, or a lead-stripping process, a mandrel extraction process, and a coiling/packing process. Ru. In addition, in the mandrel extraction process, water pressure is used to extract the mandrel, the mandrel is wound up with a winding device, the mandrel is released again, and the above process is repeated to manufacture the hose. be.
ところで、上記従来のホースの製造方法で使用するＮ６
．Ｎｉｌのナイロン樹脂マンドレルは、低価格で、ゴム
に与える影響が少なく、耐熱性２寸法の安定性に優れ、
更にリサイクルが良いため、−船釣に使用されている。By the way, N6 used in the above conventional hose manufacturing method
．． Nil's nylon resin mandrels are low priced, have little effect on rubber, have excellent heat resistance and stability in two dimensions,
Furthermore, because it is easy to recycle, it is used for boat fishing.
然しなから、ナイロン６（Ｎ６）、ナイロン１１（Ｎｉ
ｌ）等のナイロン樹脂マンドレルを使用したホースの製
造方法では、補強層編組工程時の不具合として、内管の
バックリングに起因する外径不良がある。However, nylon 6 (N6) and nylon 11 (Ni
In the method of manufacturing a hose using a nylon resin mandrel such as 1), a problem during the reinforcing layer braiding process is a defect in the outer diameter due to buckling of the inner tube.
従来、この不具合の原因検討の結果、樹脂マンドレル上
に押出した未加硫ゴム組成物の内管と、樹脂マンドレル
との間に気体が溜り、この気体溜りが編組時の不安定要
因となることが判っていた。しかし、従来では上記の気
体溜りを解消する方法がなく、未だ解決されていなかっ
た。Previously, as a result of investigating the cause of this problem, it was found that gas accumulates between the resin mandrel and the inner tube of unvulcanized rubber composition extruded onto the resin mandrel, and this gas accumulation causes instability during braiding. was understood. However, in the past, there was no method to eliminate the above-mentioned gas accumulation, and the problem remained unsolved.
この発明は、かかる従来の問題点に着目して案出された
もので、ナイロン樹脂マンドレルが水分吸収率が高く
（ナイロンの場合には２％以上）、工程中でマンドレル
に吸収した水分が押出し工程時のゴム温度（１００℃〜
１３０℃）で気化し、その結果、未加硫ゴム組成物の内
管と、樹脂マンドレルとの間に気体溜り部分が出来るこ
とを見出し、樹脂マンドレルの水分率を内管を押出す工
程の直前で一定以下に調整することにより、補強層編組
工程時の不具合を低減すると共に、外径不良を防止して
、ホースの生産性及び品質の安定化を図ったホースの製
造方法を提供することを目的とするものである。This invention was devised by focusing on such conventional problems, and the nylon resin mandrel has a high moisture absorption rate.
(more than 2% in the case of nylon), the moisture absorbed by the mandrel during the process is reduced to the rubber temperature during the extrusion process (100℃ ~
As a result, it was discovered that a gas pocket was formed between the inner tube of the unvulcanized rubber composition and the resin mandrel, and the moisture content of the resin mandrel was determined immediately before the step of extruding the inner tube. To provide a method for manufacturing a hose that reduces defects during the reinforcing layer braiding process and prevents defects in outer diameter by adjusting the diameter to below a certain level, thereby stabilizing the productivity and quality of the hose. This is the purpose.
この発明は上記目的を達成するため、マンドレル抜き工
程で抜き取った樹脂マンドレルをリサイクルする際、内
管を押出す工程の直前で乾燥工程により樹脂マンドレル
を乾燥させて、水分率を１．５％以下に前処理するよう
にしたことを要旨とするものである。In order to achieve the above object, when recycling the resin mandrel extracted in the mandrel extraction process, the resin mandrel is dried in a drying process immediately before the process of extruding the inner tube to reduce the moisture content to 1.5% or less. The gist of this is that pre-processing is carried out.
この発明は、上記のように構成され、飽和水分率２％以
上の樹脂マンドレル上に、未加硫ゴム組成物の内管を施
す際に、その直前工程で該樹脂マンドレルの水分率を１
．５％以下となるように乾燥処理した後、前記未加硫ゴ
ム組成物を押出すことにより、補強層編組工程時の不具
合を低減すると共に、外径不良を防止して、ホースの生
産性及び品質の安定化を図るようにしたことを特徴とす
るものである。This invention is constructed as described above, and when forming an inner tube of an unvulcanized rubber composition on a resin mandrel with a saturated moisture content of 2% or more, the moisture content of the resin mandrel is reduced to 1 in the immediately preceding step.
．． By extruding the unvulcanized rubber composition after drying it to a concentration of 5% or less, problems during the reinforcing layer braiding process can be reduced, and defects in outer diameter can be prevented, improving hose productivity and The feature is that the quality is stabilized.
以下添付図面に基いて、この発明の詳細な説明する。 The present invention will be described in detail below based on the accompanying drawings.
第１図は、この発明を実施したホース製造方法のフロー
チャートを示し、■は、樹脂マンドレルの外周に、クロ
スヘツドから内管ゴムを押し出す内管押出し工程、■は
、前記内管ゴムの外周面に編組機により補強層を巻付け
る補強層編組工程、■は、補強層を巻付けた内管ゴムの
外周面に、クロスヘツドから外管ゴムを押し出す外管押
出し工程であって、この■〜■でホースの成型工程■を
構成する
また■は、前記■で成型したホースの外周面に、圧力保
持の為に、リボンラッパーを行うラッピング工程または
被鉛機によりホースの外周面に鉛を被覆する被鉛工程で
あり、また■は、ラッピング工程または被鉛工程により
圧力保持したホースを、スチーム加圧、加硫缶により加
硫を行う加圧・加硫工程、■は、前記加硫したホースか
らリボンランパーまたは鉛を剥離させるアンラソビング
工程又は剥鉛工程であり、この■〜■でホースの加硫工
程■を構成する。FIG. 1 shows a flowchart of a method for manufacturing a hose according to the present invention, in which ``■'' is an inner tube extrusion step in which the inner tube rubber is extruded from a crosshead onto the outer periphery of a resin mandrel; The reinforcing layer braiding process involves wrapping the reinforcing layer using a braiding machine, and (2) is the outer tube extrusion process in which the outer tube rubber is extruded from the crosshead onto the outer peripheral surface of the inner tube rubber around which the reinforcing layer is wrapped. Part (2) of the hose molding process (2) is a wrapping process in which a ribbon wrapper is applied to the outer circumferential surface of the hose molded in (1) above to maintain pressure, or a lead coating is applied to the outer circumferential surface of the hose using a lead coating machine. This is a lead process, and (■) is a pressurization and vulcanization process in which the pressure is maintained through a wrapping process or a lead-covering process, and the hose is then pressurized with steam and vulcanized using a vulcanizer. This is an under-sobbing process or a lead stripping process in which the ribbon lumper or lead is removed, and these steps (1) to (2) constitute the hose vulcanization process (2).
また、■はマンドレル抜き工程、［相］はコイリング・
梱包工程である。In addition, ■ is the mandrel extraction process, and [phase] is the coiling process.
This is the packaging process.
前記、マンドレル抜き工程■では、加硫成型された樹脂
マンドレルを抜き取るため、ボースの一端側から水圧を
掛けてマンドレルを抜き取る。抜き取った樹脂マンドレ
ルは、マンドレル巻取り工程■で、リール等に巻取る。In the above-mentioned mandrel removal step (2), in order to remove the vulcanized and molded resin mandrel, water pressure is applied from one end of the bowse to remove the mandrel. The extracted resin mandrel is wound onto a reel or the like in the mandrel winding step (■).
前記巻取り工程■で巻取った樹脂マンドレルを再度利用
してホースを製造する場合には、この樹脂マンドレルを
、マンドレル離型処理工程＠で処理した後、マンドレル
乾燥工程０で一定水分率以下、即ち、この実施例では、
１．５％以下に乾燥させる。When manufacturing a hose by reusing the resin mandrel wound up in the winding step ①, the resin mandrel is treated in the mandrel release treatment step @, and then the moisture content is below a certain level in the mandrel drying step 0. That is, in this example,
Dry to 1.5% or less.
この乾燥手段としては、約１００°Ｃ程度の加熱空気や
、加熱窒素等の乾燥高温気体と樹脂マンドレルを接触さ
せて乾燥させるか、または赤外線、遠赤外線等の熱線を
樹脂マンドレルに放射させて、水分率１．５％以下に乾
燥させるのである。The drying method is to dry the resin mandrel by bringing it into contact with heated air at about 100°C or dry high-temperature gas such as heated nitrogen, or to radiate heat rays such as infrared rays or far infrared rays to the resin mandrel. It is dried to a moisture content of 1.5% or less.
なお、乾燥温度は、ナイロン等の樹脂マンドレルを使用
する場合には、劣化等の問題が生ずるため、１００℃が
好ましい。Note that the drying temperature is preferably 100° C. because problems such as deterioration occur when using a resin mandrel made of nylon or the like.
そして、このマンドレル乾燥工程■で水分率１．５％以
下に乾燥させた樹脂マンドレルを、再びホースの成型工
程■に送り込み、上記の操作を繰返し行うことにより、
不具合のないホースを効率良く製造することが出来るの
である。Then, the resin mandrel that has been dried to a moisture content of 1.5% or less in this mandrel drying process (2) is sent again to the hose molding process (2), and by repeating the above operation,
This makes it possible to efficiently manufacture hoses with no defects.
この発明は、上記のようにマンドレル水分率と不具合の
発生の相関に着目し、内管ゴムを押出し直前の工程で、
マンドレル水分率を、１．５％以下に乾燥させて調整す
ることにより、樹脂マンドレル上に押出した未加硫ゴム
組成物の内管と、樹脂マンドレルとの間に気体溜りが発
生せず、補強層編組工程０時の不具合を低減することが
出来、ホースの外径不良を防止して生産性の向上１品質
の安定化を図ることが出来るのである。This invention focuses on the correlation between mandrel moisture content and the occurrence of defects as described above, and in the process immediately before extruding the inner tube rubber,
By drying and adjusting the moisture content of the mandrel to 1.5% or less, no gas accumulation occurs between the inner tube of the unvulcanized rubber composition extruded onto the resin mandrel and the resin mandrel, and reinforcement is achieved. It is possible to reduce defects during the layer braiding process, prevent defects in the outer diameter of the hose, improve productivity, and stabilize quality.
以下、この発明の実施例と比較例を説明する。Examples and comparative examples of the present invention will be described below.
（１）、ナイロン６樹脂マンドレルの水分率と、外径不
良発生の関係を調べるために、第１表に示すように、長
さ５００ｍと長さｌＱｃｍのナイロン６樹脂マンドレル
に水浸漬処理及び乾燥処理を行った後、長さ５００ｍの
ナイロン６樹脂マンドレルの上に押出機により内管ゴム
を押出し、更にその上に編組機により補強槽を編組した
。(1) In order to investigate the relationship between the moisture content of nylon 6 resin mandrels and the occurrence of outer diameter defects, as shown in Table 1, nylon 6 resin mandrels with lengths of 500 m and 1Q cm were immersed in water and dried. After the treatment, the inner tube rubber was extruded using an extruder onto a nylon 6 resin mandrel having a length of 500 m, and a reinforcing tank was further braided thereon using a braiding machine.
補強槽編組後のホースの外径を測定して、外径不良の発
生件数を調べた。The outer diameter of the hose after the reinforcing tank was braided was measured, and the number of cases of outer diameter defects was investigated.
また、長さ１０ｃｍのナイロン６樹脂マンドレルの水分
率をカール・フィッシャー滴定法により測定した。In addition, the moisture content of a 10 cm long nylon 6 resin mandrel was measured by Karl Fischer titration.
結果を、第１表に示す。The results are shown in Table 1.
第１表から明らかなように、ナイロン６樹脂マンドレル
の水分率は、水浸漬することにより増加するが、１００
℃で乾燥処理を行うと水分率は減少する。As is clear from Table 1, the moisture content of the nylon 6 resin mandrel increases when immersed in water;
The moisture content decreases when drying at ℃.
これらのマンドレルを用いて製造されたホースの外径不
良の発生件数は、マンドレルの水分率と良く相関する。The number of occurrences of defects in the outer diameter of hoses manufactured using these mandrels correlates well with the moisture content of the mandrel.
この発明の効果は、マンドレルの水分率が２％以下にな
ると表れ、マンドレルの水分率が１．５以下であると外
径不良の発生はなくなる。The effect of this invention becomes apparent when the moisture content of the mandrel is 2% or less, and when the moisture content of the mandrel is 1.5 or less, the occurrence of defects in outer diameter disappears.
（２）、ナイロン１１樹脂マンドレルの水分率と、外径
不良発生の関係を調べるために、第２表に示すように、
長さ５００ｍと長さ１０ｃｍのナイロン１１樹脂マンド
レルを、前述と同様に、水浸漬処理及び乾燥処理を行っ
た後、長さ５００ｍのナイロン１１樹脂マンドレルの上
に押出機により内管ゴムを押出し、更にその上に編組機
により補強槽を編組した。(2) In order to investigate the relationship between the moisture content of nylon 11 resin mandrels and the occurrence of outer diameter defects, as shown in Table 2,
Nylon 11 resin mandrels with a length of 500 m and a length of 10 cm were soaked in water and dried in the same manner as described above, and then the inner tube rubber was extruded onto the nylon 11 resin mandrels with a length of 500 m using an extruder. Further, a reinforcing tank was braided thereon using a braiding machine.
補強槽編組後のホースの外径を測定して、外径不良の発
生件数を調べた。The outer diameter of the hose after the reinforcing tank was braided was measured, and the number of cases of outer diameter defects was investigated.
また、長さ１０ｃｍのナイロン１１樹脂マンドレルの水
分率をカール・フィッシャー滴定法により測定した。In addition, the moisture content of a 10 cm long nylon 11 resin mandrel was measured by Karl Fischer titration.
結果を、第２表に示す。The results are shown in Table 2.
第２表から明らかなように、ナイロン１１樹脂マンドレ
ルの水分率は、水浸漬することにより増加するが、１０
０℃で乾燥処理を行うと水分率は減少する。As is clear from Table 2, the moisture content of the nylon 11 resin mandrel increases when immersed in water;
When drying is performed at 0°C, the moisture content decreases.
これらのマンドレルを用いて製造されたホースの外径不
良の発生件数は、前述と同様に、マンドレルの水分率と
良く相関する。The number of occurrences of defects in the outer diameter of hoses manufactured using these mandrels correlates well with the moisture content of the mandrels, as described above.
この発明の効果は、マンドレルの水分率が２％以下にな
ると表れ、マンドレルの水分率が１．５以下であると外
径不良の発生はなくなる。The effect of this invention becomes apparent when the moisture content of the mandrel is 2% or less, and when the moisture content of the mandrel is 1.5 or less, the occurrence of defects in outer diameter disappears.
（３）、ナイロン６樹脂マンドレルの繰返し使用回数と
、マンドレル水分率及び外径不良発生の関係を調べるた
めに、第３表に示すように、前述と同様な方法で、各使
用回数での水分率と外径不良発生件数を調べた。（比較
例）
また、各使用回数のマンドレルを１００℃で乾燥処理し
、同様に水分率と外径不良の発生件数を調べた。（実施
例）
結果は第３表に示した。(3) In order to investigate the relationship between the number of repeated uses of a nylon 6 resin mandrel, the mandrel moisture content, and the occurrence of outer diameter defects, as shown in Table 3, the moisture content at each use was determined using the same method as described above. The rate and number of cases of defective outer diameter were investigated. (Comparative Example) In addition, the mandrels used for each number of times were dried at 100° C., and the moisture content and the number of occurrences of outer diameter defects were similarly examined. (Example) The results are shown in Table 3.
第３表から明らかなように、マンドレルは繰返し使用に
よって、工程中で水分を吸収して水分率が増加し、それ
と相関して外径不良発生件数は増加するが、押出しの直
前で乾燥処理を行えば、この発明の作用により、マンド
レルの水分率は１．５％以下に減少し、外径不良の発生
はなくなる。As is clear from Table 3, when the mandrel is repeatedly used, it absorbs water during the process and the moisture content increases, which correlates with an increase in the number of outer diameter defects, but drying treatment is necessary just before extrusion. If carried out, the moisture content of the mandrel will be reduced to 1.5% or less due to the action of the present invention, and defects in outer diameter will no longer occur.
（４）、ナイロン１１樹脂マンドレルの繰返し使用回数
と、マンドレル水分率及び外径不良発生の関係を調べる
ために、第４表に示すように、前述と同様な方法で、各
使用回数での水分率と外径不良発生件数を調べた。（比
較例）
また、各使用回数のマンドレルを１００℃で乾燥処理し
、同様に水分率と外径不良の発生件数を調べた。（実施
例）
結果は第４表に示した。(4) In order to investigate the relationship between the number of repeated uses of a nylon 11 resin mandrel, mandrel moisture content, and occurrence of outer diameter defects, as shown in Table 4, the moisture content at each use was determined using the same method as described above. The rate and number of cases of defective outer diameter were investigated. (Comparative Example) In addition, the mandrels used for each number of times were dried at 100° C., and the moisture content and the number of occurrences of outer diameter defects were similarly examined. (Example) The results are shown in Table 4.
第４表から明らかなように、ナイロン６樹脂マンドレル
と同様に、ナイロン１１樹脂マンドレルも繰返し使用に
よって、工程中で水分を吸収して水分率が増加し、外径
不良の発生件数は増加するが、押出しの直前で乾燥処理
を行えば、この発明の作用により、マンドレルの水分率
は１．５％以下に減少し、外径不良の発生はなくなる。As is clear from Table 4, similar to the nylon 6 resin mandrel, the nylon 11 resin mandrel also absorbs moisture during the process due to repeated use, resulting in an increase in moisture content and an increase in the number of outer diameter defects. If the drying treatment is performed immediately before extrusion, the moisture content of the mandrel will be reduced to 1.5% or less due to the action of the present invention, and defects in outer diameter will no longer occur.
（以下余白）
「第１表１
（庄Ｎ５樹脂マンドレルの水分率と、外径不良発生の関
係。(Left below) Table 1 1 (Relationship between moisture content of Sho N5 resin mandrel and occurrence of outer diameter defects.
「第２表１
＋２１．Ｎ１１樹脂マンドレルの水分率と、外径不良発
生の関係「第３表ｊ
＋３１．Ｎ６樹脂マンドレル使用回数と水分率、外径不
良発生の関係「第４表Ｊ
ｆ４１．Ｎ１１樹脂マンドレル使用回数と水分率と、外
径不良発生の関係〔発明の効果〕
この発明は、上記のように飽和水分率２％以上の樹脂マ
ンドレル上に、未加硫ゴム組成物の内管を施す際に、そ
の前工程で、該樹脂マンドレルの水分率を１．５％以下
となるように乾燥処理した後、前記未加硫ゴム組成物を
押出すようにしたため、ホース製造工程中の不具合を低
減することが出来ると共に、外径不良を防止して、ホー
スの生産性を向上し、かつ品質の安定化を図ることが出
来る効果がある。"Table 2 1 +21.Relationship between the moisture content of N11 resin mandrel and the occurrence of defective outer diameter"Table 3j +31.Relationship between the number of times N6 resin mandrel is used, moisture content and occurrence of defective outer diameter"Table 4J f41. Relationship between the number of times N11 resin mandrel is used, the moisture content, and the occurrence of defective outer diameter [Effects of the Invention] As described above, this invention provides an inner tube of an unvulcanized rubber composition on a resin mandrel with a saturated moisture content of 2% or more. During the hose manufacturing process, the unvulcanized rubber composition was extruded after drying the resin mandrel to a moisture content of 1.5% or less in the previous process. This has the effect of reducing problems, preventing defects in outer diameter, improving hose productivity, and stabilizing quality.
第１図は、従来のホース製造工程のフローチャート、第
２図はこの発明を実施したホース製造工程のフローチャ
ートである。FIG. 1 is a flowchart of a conventional hose manufacturing process, and FIG. 2 is a flowchart of a hose manufacturing process in which the present invention is implemented.
Claims (1)
おいて、飽和水分率２％以上の樹脂マンドレル上に、未
加硫ゴム組成物の内管を施す際に、その前工程で、該樹
脂マンドレルの水分率を１．５％以下となるように乾燥
処理した後、前記未加硫ゴム組成物を押出すことを特徴
とするホースの製造方法。In a method for manufacturing a hose comprising at least an inner tube and a reinforcing layer, when an inner tube of an unvulcanized rubber composition is applied on a resin mandrel with a saturated moisture content of 2% or more, in a previous step, the resin mandrel is A method for manufacturing a hose, which comprises extruding the unvulcanized rubber composition after drying it to a moisture content of 1.5% or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63273228A JPH02120029A (en) | 1988-10-31 | 1988-10-31 | Manufacture of hose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63273228A JPH02120029A (en) | 1988-10-31 | 1988-10-31 | Manufacture of hose |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02120029A true JPH02120029A (en) | 1990-05-08 |
Family
ID=17524903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63273228A Pending JPH02120029A (en) | 1988-10-31 | 1988-10-31 | Manufacture of hose |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02120029A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100423539B1 (en) * | 2000-09-22 | 2004-03-19 | 현대자동차주식회사 | Mesuring system for flow rate of manual transmission |
| JP2006272825A (en) * | 2005-03-30 | 2006-10-12 | Yokohama Rubber Co Ltd:The | Molding method for rubber hose, and interlaminar air release device for molding |
-
1988
- 1988-10-31 JP JP63273228A patent/JPH02120029A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100423539B1 (en) * | 2000-09-22 | 2004-03-19 | 현대자동차주식회사 | Mesuring system for flow rate of manual transmission |
| JP2006272825A (en) * | 2005-03-30 | 2006-10-12 | Yokohama Rubber Co Ltd:The | Molding method for rubber hose, and interlaminar air release device for molding |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4378042A (en) | Foldable bicycle tire having flexible beads | |
| JPS61290011A (en) | Continuous vulcanization of hose | |
| GB742031A (en) | Manufacture of regenerated cellulose sausage casings | |
| US3684602A (en) | Manufacture of flexible hose pipes | |
| US2139840A (en) | Process of making pneumatic tires | |
| JPH02120029A (en) | Manufacture of hose | |
| US4975309A (en) | Curved tubular packing casing | |
| JPH07121193B2 (en) | Tube-shaped artificial sausage packaging material and method for producing the same | |
| US6110407A (en) | Methods of manufacturing dipped bladder molding mandrels for manufacturing tubular shafts | |
| JP2003285978A (en) | Plastic-formed film product and winding method and device therefor | |
| JP3380740B2 (en) | Tire manufacturing method | |
| US2838405A (en) | Method for producing curved sausage casings | |
| US2185738A (en) | Method of manufacturing a printing roll | |
| US1911497A (en) | Process of manufacturing a wrapped belt | |
| US1365327A (en) | of akron | |
| JP3960362B2 (en) | Continuous vulcanization method for fiber reinforced hoses | |
| US587545A (en) | Henry b | |
| US1931964A (en) | Process for the manufacture of bands of cellular rubber with closed cells | |
| JPH0423629B2 (en) | ||
| JPH0471826A (en) | Silicone rubber hose and manufacture thereof | |
| SU292830A1 (en) | METHOD OF SCREWING AND UNLOADING OF RUBBER DORNOVA SLEEVES | |
| JPS627512A (en) | Continuous vulcanizing method | |
| JPH04299107A (en) | Method and apparatus for preparing hose | |
| JPS58219035A (en) | Manufacture of rubber tube | |
| JP2000100265A (en) | Manufacture of rubber-covered wire, and manufacturing device thereof |