JPS6141522A - Manufacture of bent synthetic resin pipe - Google Patents

Manufacture of bent synthetic resin pipe

Info

Publication number
JPS6141522A
JPS6141522A JP16458384A JP16458384A JPS6141522A JP S6141522 A JPS6141522 A JP S6141522A JP 16458384 A JP16458384 A JP 16458384A JP 16458384 A JP16458384 A JP 16458384A JP S6141522 A JPS6141522 A JP S6141522A
Authority
JP
Japan
Prior art keywords
parison
conveyor
synthetic resin
mold
moved
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
Application number
JP16458384A
Other languages
Japanese (ja)
Other versions
JPH044931B2 (en
Inventor
Tokujiro Hayashi
徳二郎 林
Masakuni Nishino
正訓 西野
Michio Yamamura
山村　廸男
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.)
TAIGAASU POLYMER KK
Tigers Polymer Corp
Original Assignee
TAIGAASU POLYMER KK
Tigers Polymer Corp
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
Application filed by TAIGAASU POLYMER KK, Tigers Polymer Corp filed Critical TAIGAASU POLYMER KK
Priority to JP16458384A priority Critical patent/JPS6141522A/en
Publication of JPS6141522A publication Critical patent/JPS6141522A/en
Publication of JPH044931B2 publication Critical patent/JPH044931B2/ja
Granted legal-status Critical Current

Links

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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/02—Bending or folding
    • B29C53/08—Bending or folding of tubes or other profiled members
    • B29C53/083—Bending or folding of tubes or other profiled members bending longitudinally, i.e. modifying the curvature of the tube axis
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/4242—Means for deforming the parison prior to the blowing operation
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/4242—Means for deforming the parison prior to the blowing operation
    • B29C49/4244—Means for deforming the parison prior to the blowing operation during or after laying preform into the final mould
    • B29C49/42444—Means for deforming the parison prior to the blowing operation during or after laying preform into the final mould by moving the transport means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid

Abstract

PURPOSE:To make it possible to produce a synthetic pipe bent in prescribed directions with both a mold and an extruder fixed, by injecting a parison onto a conveyor from the extruder, and driving the conveyor on which the parison is placed while the conveyor is moved in more than one dimensional direction. CONSTITUTION:A synthetic resin tube is extruded from a die head 2 onto a running endless belt 17 where it is run, and when it reaches a certain length corresponding to the overall length of the intended synthetic resin pipe, the conveyor 10 is stopped, the tube is cut by a cutter 3, and the parison 18 is placed on the belt conveyor 10. Then the belt conveyor 10 is driven and also moved in the X-X' direction and the Y-Y' direction shown to allow the parison 18 to drop from the endelss belt and to follow a cavity section 5 thereby it is held therein. Thereafter, the bottom force 4 where the parison 18 is held is moved into a clamping apparatus, a top force is registered with the bottom force, and air is blown into the parison in the mold thereby producing a synthetic resin pipe having a prescribed S-shape.

Description

【発明の詳細な説明】 （産業上の利用分野） 本考案は予め定まった平面的又は立体的方向に折曲した
合成樹脂パイプを熱可塑性合成樹脂により一体に成形す
る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 of integrally molding synthetic resin pipes bent in a predetermined two-dimensional or three-dimensional direction using a thermoplastic synthetic resin.

（従来の技術） 従来、例えば自動車のデフロスタ−ホース、エアホース
、ラジェーターボース等は、エンジンルーム内等におけ
る取付作業の便宜上あらかじめ２次元的又は３次元的に
屈曲した所定形状に成形されることが望ましいため、次
のような方法により複雑な曲り形状を有する合成樹脂パ
イプが成形されていた。(Prior Art) Conventionally, for example, defroster hoses, air hoses, radiator hoses, etc. of automobiles are desirably formed into a predetermined shape that is bent two-dimensionally or three-dimensionally in order to facilitate installation work in an engine room or the like. Therefore, synthetic resin pipes with complicated curved shapes have been formed using the following method.

即ち、例えば特開昭５３−５６２６２号公報に示されて
い、るように、２次元以上の変化をする所定の管路形状
を有する溝を刻設した下金型を固定した押出機のパリソ
ン注出用ノズルに対して前後・左右・上下自在に移動さ
せることにより、パリソンを下金型の溝に沿って収納し
上金型を合わせた後ブロー成形して不規則な曲り形状を
有するプラスチック管を成形するのが１つの方法である
。That is, for example, as shown in Japanese Patent Application Laid-Open No. 53-56262, a parison injection molding machine of an extruder fixed with a lower mold in which a groove is carved having a predetermined conduit shape that changes in two or more dimensions is used. By freely moving the parison back and forth, left and right, and up and down with respect to the output nozzle, the parison is stored along the groove of the lower mold, and after the upper mold is aligned, it is blow-molded to create a plastic tube with an irregularly curved shape. One method is to mold it.

また他の方法として、特開昭５５−２１２３９号公報に
示されているように、上記の方法と反対に、パリソンを
収納する下金型を固定し、これに対してパリソンを注出
する押出機のダイヘッドを前後・左右・上下自在に移動
して同様のプラスチツク管を成形することも提案されて
いる。Another method, as shown in Japanese Patent Application Laid-open No. 55-21239, is extrusion, in which a lower mold for storing the parison is fixed and the parison is poured into it, contrary to the above method. It has also been proposed to mold similar plastic tubes by moving the die head of the machine freely back and forth, left and right, and up and down.

（発明が解決しようとする問題点） しかしながら、上記いずれの方法においても、金型又は
押出機を移動させるようにしたので、装置が著しく大型
化してしまう問題点があった。(Problems to be Solved by the Invention) However, in any of the above methods, since the mold or the extruder is moved, there is a problem in that the size of the apparatus becomes significantly large.

本発明はこの問題点を解決するために提案されたもので
、金型及び押出機の両者を固定したまま所定方向に折曲
した合成樹脂パイプの製造を可能にし、その製造装置を
非常に簡素化することを技術課題とするものである。The present invention was proposed to solve this problem, and makes it possible to manufacture synthetic resin pipes that are bent in a predetermined direction while keeping both the mold and extruder fixed, and the manufacturing equipment is extremely simple. The technical challenge is to make this possible.

（問題点を解決するための手段） 本発明は上記の問題点を解決するために、折曲した合成
樹脂パイプの製造方法として、押出機から押出成形した
チューブを駆動するコンベア上に載せて所定の長さに達
するまで走行させると共にその後端を切断してパリソン
とし、該パリソンを２次元以上の曲りを持つブロー成形
用金型のキャビティ部に臨ませたうえ、該コンベアを駆
動すると同時に２次元以上の方向に移動することにより
、該パリソンを該キャビティ部に倣わせて収納させた後
、対の金型を合わせてブロー成形するようにしたことを
技術的手段としたものである。(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a method for manufacturing bent synthetic resin pipes, in which a tube extruded from an extruder is placed on a conveyor that drives it. The parison is made to run until it reaches the full length, and its rear end is cut off to form a parison.The parison is exposed to the cavity of a blow molding mold having a curve of two or more dimensions, and at the same time as the conveyor is driven, a two-dimensional The technical means is that by moving in the above direction, the parison is housed in a manner that follows the cavity, and then the pair of molds are brought together and blow molded.

（実施例） 以下図面に示した具体的実施装置の一例により本発明方
法の実施例を説明する。(Example) An example of the method of the present invention will be described below using an example of a specific implementation apparatus shown in the drawings.

（１）は図示しない適当な支持構造により設置された押
出機で、該押出機１１）の先端には合成樹脂チューブを
押出成形するダイヘッド（２）が取付けてあり、該ダイ
ヘッド［２）の先端には押出されたチューブを左右から
挟み封じ込めて切断するカッタ（３１が設けられている
。ダイヘッド１２）の下方には、２次元方向に曲ったキ
ャビティ部（５）が形成されているブロー成形用下金型
（４）の上方において該キャビティ部（５）に沿って２
次元方向に移動可能なコンベア機構１６１が設置されて
いる。(1) is an extruder installed by an appropriate support structure (not shown), and a die head (2) for extruding a synthetic resin tube is attached to the tip of the extruder 11). is provided with a cutter (31) that pinches and seals the extruded tube from the left and right to cut it.A blow molding cutter (31) is provided below the die head 12, which is curved in two-dimensional directions. 2 along the cavity part (5) above the lower mold (4).
A conveyor mechanism 161 that is movable in the dimensional direction is installed.

該コンベア機構１６１は、ベース（７１に縦方向移動可
能に装架されている縦スライド１８）と、該縦スライド
（８１に横方向移動可能に装架されている横スライド（
９）と、該横スライド（９の一端に連設されているベル
トコンベア（１０）とで構成されている。縦スライド（
８（はベース（′７１に回転可能に支持されたねじ棒（
図示せず）が甥合されており、該ねじ棒が駆動モータ（
図示せず）により回□転駆動されることにより、ベース
１′７１に固定された一対の平行な案内軸間にガイドさ
れながら、縦方向（第２図ｘ−ｘ’方向）にベース（′
７１上を移動するようにしである。The conveyor mechanism 161 includes a base (the vertical slide 18 mounted on the base 71 so as to be movable in the vertical direction), and a horizontal slide (the vertical slide 18 mounted on the vertical slide 81 so as to be movable in the horizontal direction).
9) and a belt conveyor (10) connected to one end of the horizontal slide (9).
8 (is a threaded rod rotatably supported on the base ('71)
(not shown) are connected to each other, and the threaded rod drives the drive motor (
(not shown), the base ('
71.

横スライド１９）は縦スライド（８）に回転可能に装着
されたねじ棒（１′２が螺合されており、該ねじ棒０３
が駆動モータ（図示せず）により回転駆動されることに
より、縦スライド（ａに固定された一対の平行な案内軸
＋１３　ｆ１４１にガイドされながら、横方向（第２図
Ｙ−Ｙ’方向）に移動するようにしである。The horizontal slide 19) has a threaded rod (1'2) rotatably attached to the vertical slide (8), and the threaded rod 03
is rotationally driven by a drive motor (not shown), and is guided by a pair of parallel guide shafts fixed to the vertical slide (a) in the horizontal direction (Y-Y' direction in Fig. 2). It's like moving.

ベルトコンベア（ｌＯ）は、横スライド［９１の一端が
金型（４）に向って延設され、その端部に設けられた一
対のローラｉ＋５１１１５１にエンドベルト（１７１が
軸回されて成り、図示しないコンベア駆動モータにより
駆動ローラ１１日が回転駆動するようにしである。The belt conveyor (lO) consists of a horizontal slide [91] with one end extending toward the mold (4), and an end belt (171) pivoted around a pair of rollers i+511151 provided at the end. The drive roller 11 is rotated by a conveyor drive motor.

次にこの装置による本発明の製造方法を説明する。Next, the manufacturing method of the present invention using this apparatus will be explained.

まず、固定された押出機１１）のダイヘッド（２）の下
方にベルトコンベア１ｌｌｌの後部が臨むようにコンベ
ア機構（６）を移動配置し、コンベア駆動モータを回転
駆動させた状態で、ダイヘッド（２）から合成樹脂チュ
ーブを押出成形し、該チューブを走行するエンドレスベ
ルト（１７１上に載せて走行させる。そして該チューブ
を成形する合成樹脂パイプの全長に応じた一定の長さに
達するまで走行させると、コンベア（ＩＩを停止すると
共に該チューブの１＆端をカッタ（３）により左右から
挟み封じ込めて切断し、ベルトコンベア１１０）上にパ
リソン＋ＩＦＪを載置させる。尚、このとき、チューブ
内に微圧なエアーを注入してパリソン１ｌｆｌの保形を
図っても良いし、パリソン０■の冷却固化を防ぐため適
当な加熱手段により加熱するようにしても良い。First, the conveyor mechanism (6) is moved and arranged so that the rear part of the belt conveyor 1lll faces below the die head (2) of the fixed extruder 11), and with the conveyor drive motor rotationally driven. ), and the tube is placed on a running endless belt (171) and run.Then, the tube is run until it reaches a certain length depending on the total length of the synthetic resin pipe to be molded. , the conveyor (II) is stopped, and the cutter (3) pinches and seals the 1&end of the tube from the left and right to cut it, and the parison + IFJ is placed on the belt conveyor 110).At this time, a slight pressure is applied inside the tube. The parison 1lfl may be kept in shape by injecting air, or the parison 0l may be heated by an appropriate heating means to prevent it from cooling and solidifying.

このようにして形成されたパリソン（ＩＦＪはその先端
（１８ａ　）を金型（４１のキャビティ部６の先端（５
ａ）に臨ませた位置にあり、次いで、ベルトコンベア（
１０１を駆動すると共に縦スライド（ａを移動させる駆
動モータ及び横スライド（９を移動させる駆動モータを
適宜に回転起動させて、ベルトコンベア１１０１をＸＸ
′方向ならびにＹＹ’方向に移動させる。このとき、ｘ
ｘ’方向の移動とＹＹ’方向の移動のｋｌせにより、ベ
ルトコンベア（１０）はキャビティ部６）に倣って移動
させることができ、コンベア上のパリソン１１１１をエ
ンドレスベルトから落下させながらキャビティ部６）に
倣わせて（図示の例ではＳ字形に）収納することができ
る。The parison (IFJ) formed in this way has its tip (18a) inserted into the tip (5) of the cavity part 6 of the mold (41).
a), next to the belt conveyor (
101 and the drive motor that moves the vertical slide (a) and the drive motor that moves the horizontal slide (9) are started to rotate as appropriate to move the belt conveyor 1101 to XX.
' direction and YY' direction. At this time, x
By adjusting the movement in the x' direction and the movement in the YY' direction, the belt conveyor (10) can be moved following the cavity part 6), and the parison 1111 on the conveyor can be moved down the cavity part 6 while falling from the endless belt. ) (in the illustrated example, in an S-shape).

その後、パリソン［ＩＥｌが収納された下金型（４］を
型締装Ｎ（図示せず）内に移し、対の上金型（図示せず
）と型合せしてから、パリソン内に空気が吹込まれて該
パリソンは金型内でブロー成形されて所定のＳ字形に折
曲した合成樹脂パイプが製造されるに至る。After that, the lower mold (4) containing the parison [IEl] is transferred to the mold clamp N (not shown) and matched with the paired upper mold (not shown), and then the parison is filled with air. is blown into the parison, and the parison is blow-molded in a mold to produce a synthetic resin pipe bent into a predetermined S-shape.

尚、上述したチューブの押出工程、パリソンの形成工程
、パリソンの収納工程等における一連の操作はすべてコ
ンピュータに記憶させて自動的に行うようにしても良い
。Incidentally, all of the series of operations in the tube extrusion process, parison formation process, parison storage process, etc. described above may be stored in a computer and automatically performed.

また、金型に所定の３次元的曲りを持つキャビティ部を
形成し、例えば前記実施例中のベルトコンベアを上下に
動かす装置を付属させて３次元記実施例と同様の方法に
より所定の３次元方向に屈曲したパイプを製造すること
もできる。In addition, a cavity portion having a predetermined three-dimensional curve is formed in the mold, and a device for moving the belt conveyor in the above embodiment up and down is attached, and a predetermined three-dimensional curve is formed in the same manner as in the three-dimensional embodiment. It is also possible to produce pipes bent in the direction.

（発明の作用効果） 以上説明したように、本発明においては、押出機から一
旦コンベア上にパリソンを注出し、パリソンを載置した
コンベアを駆動させると同時に２次元以上の方向に移動
させて、パリソンを下金型の成形溝に沿って正確に移載
するようにしたので、金型や押出機を移動させる場合に
比べて装置を著しく簡素化でき、産業上利用価値が大き
い利点がある。(Operations and Effects of the Invention) As explained above, in the present invention, the parison is once poured out from the extruder onto the conveyor, and the conveyor on which the parison is placed is driven and simultaneously moved in two or more directions. Since the parison is accurately transferred along the molding groove of the lower mold, the equipment can be significantly simplified compared to the case where the mold or extruder is moved, which has the advantage of being of great industrial value.

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

第１図は本発明を実施する装置例の側面図、第２図は下
金型にパリソンを収納する状態を示す装置要部の平面図
である。 （１）・・・押出機、 閲）・・・下金型、 １５）・・・キャビティ部・ ６）・・・コンベア機構、 ］ａ・・・縦スライド、 （９１・・・横スライド、 １１０）・・・ベルトコンベア、 （ＩＥ）・・・パリソン。FIG. 1 is a side view of an example of an apparatus for carrying out the present invention, and FIG. 2 is a plan view of the main parts of the apparatus showing a state in which a parison is stored in a lower mold. (1)...Extruder, View)...Lower mold, 15)...Cavity part, 6)...Conveyor mechanism, ]a...Vertical slide, (91...Horizontal slide, 110)...belt conveyor, (IE)...parison.

Claims (1)

【特許請求の範囲】[Claims] 押出機から押出成形したチューブを駆動するコンベア上
に載せて所定の長さに達するまで走行させると共にその
後端を切断してパリソンとし、該パリソンを２次元以上
の曲りを持つブロー成形用金型のキャビティ部に臨ませ
たうえ、該コンベアを駆動すると同時に２次元以上の方
向に移動することにより、該パリソンを該キャビティ部
に倣わせて収納させた後、対の金型を合わせてブロー成
形するようにしたことを特徴とする折曲した合成樹脂パ
イプの製造方法。The extruded tube from the extruder is placed on a driving conveyor and run until it reaches a predetermined length, and the rear end is cut to form a parison. The parison is placed facing the cavity and moved in two or more dimensions at the same time as the conveyor is driven, so that the parison is housed in a manner that follows the cavity, and then the pair of molds are brought together and blow molded. A method for manufacturing a bent synthetic resin pipe, characterized in that:
JP16458384A 1984-08-06 1984-08-06 Manufacture of bent synthetic resin pipe Granted JPS6141522A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16458384A JPS6141522A (en) 1984-08-06 1984-08-06 Manufacture of bent synthetic resin pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16458384A JPS6141522A (en) 1984-08-06 1984-08-06 Manufacture of bent synthetic resin pipe

Publications (2)

Publication Number Publication Date
JPS6141522A true JPS6141522A (en) 1986-02-27
JPH044931B2 JPH044931B2 (en) 1992-01-29

Family

ID=15795925

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16458384A Granted JPS6141522A (en) 1984-08-06 1984-08-06 Manufacture of bent synthetic resin pipe

Country Status (1)

Country Link
JP (1) JPS6141522A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01148326U (en) * 1988-03-25 1989-10-13
JPH0343231A (en) * 1989-07-12 1991-02-25 Kinki Denki Kk Blow molding device for hollow continuous material
US5259112A (en) * 1987-04-30 1993-11-09 Caoutchouc Manufacture Et Plastiques Method of making a connector
WO1996028295A1 (en) * 1995-03-13 1996-09-19 S.T. Soffiaggio Tecnica S.R.L. Method for producing a blow-molded body having multiple dimensions and device for performing the method
US5589205A (en) * 1993-10-26 1996-12-31 Tigers Polymer Corporation Apparatus for manufacturing hollow resin products
FR2751266A1 (en) * 1996-07-19 1998-01-23 Duplessy Herve THERMO-PLASTIC THERMO-FORMATION PROCESS IN HOT CYCLE USING FREE PARISON
US20060066003A1 (en) * 2002-01-15 2006-03-30 David Woessner Method of forming a hose
JP2006266397A (en) * 2005-03-24 2006-10-05 Yasuo Shiraishi Pipe component

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5259112A (en) * 1987-04-30 1993-11-09 Caoutchouc Manufacture Et Plastiques Method of making a connector
JPH01148326U (en) * 1988-03-25 1989-10-13
JPH0612912Y2 (en) * 1988-03-25 1994-04-06 株式会社プラコー Synthetic resin hollow molded product manufacturing equipment
JPH0343231A (en) * 1989-07-12 1991-02-25 Kinki Denki Kk Blow molding device for hollow continuous material
US5589205A (en) * 1993-10-26 1996-12-31 Tigers Polymer Corporation Apparatus for manufacturing hollow resin products
US5601779A (en) * 1993-10-26 1997-02-11 Tigers Polymer Corporation Method for manufacturing hollow resin products
WO1996028295A1 (en) * 1995-03-13 1996-09-19 S.T. Soffiaggio Tecnica S.R.L. Method for producing a blow-molded body having multiple dimensions and device for performing the method
FR2751266A1 (en) * 1996-07-19 1998-01-23 Duplessy Herve THERMO-PLASTIC THERMO-FORMATION PROCESS IN HOT CYCLE USING FREE PARISON
WO1998003325A1 (en) * 1996-07-19 1998-01-29 Duplessy Herve Thermoforming method using a free flat parison
US20060066003A1 (en) * 2002-01-15 2006-03-30 David Woessner Method of forming a hose
JP2006266397A (en) * 2005-03-24 2006-10-05 Yasuo Shiraishi Pipe component

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