JPS62227633A - Synthetic resin tube and manufacture thereof - Google Patents
Synthetic resin tube and manufacture thereofInfo
- Publication number
- JPS62227633A JPS62227633A JP61071722A JP7172286A JPS62227633A JP S62227633 A JPS62227633 A JP S62227633A JP 61071722 A JP61071722 A JP 61071722A JP 7172286 A JP7172286 A JP 7172286A JP S62227633 A JPS62227633 A JP S62227633A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- strip
- stock
- peripheral wall
- wire material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920003002 synthetic resin Polymers 0.000 title claims abstract description 32
- 239000000057 synthetic resin Substances 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 230000002093 peripheral effect Effects 0.000 claims abstract description 20
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 19
- 238000000465 moulding Methods 0.000 claims abstract description 8
- 238000004804 winding Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 71
- 238000000034 method Methods 0.000 claims description 8
- 229920005989 resin Polymers 0.000 abstract description 5
- 239000011347 resin Substances 0.000 abstract description 5
- 238000005452 bending Methods 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract description 3
- 229920005672 polyolefin resin Polymers 0.000 abstract description 2
- 239000011324 bead Substances 0.000 abstract 6
- 239000000853 adhesive Substances 0.000 abstract 1
- 229920000915 polyvinyl chloride Polymers 0.000 abstract 1
- 239000004800 polyvinyl chloride Substances 0.000 abstract 1
- 230000001154 acute effect Effects 0.000 description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Landscapes
- Moulding By Coating Moulds (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は螺旋状の補強条を備えた合成樹脂管の製造方法
に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing a synthetic resin pipe provided with spiral reinforcing strips.
（従来の技術）
・般にこの種の合成樹脂管は、１″、溶融状の合成樹脂
製条素材と、別途成形された゛１′、溶融状の合成樹脂
製線素材とをそれぞれ異なる位置から成形用ｌ：、軸１
−に供給して、螺旋状に巻付けると共に、この巻付は時
、条素材の側縁部を順次重ねて溶着し、所謂条素材をし
て周壁を成形し、かつこの周壁内側に前記線素材を溶着
して製造されていた。(Prior art) - Generally, this type of synthetic resin pipe is made by inserting a 1", molten synthetic resin wire material and a separately formed 1", molten synthetic resin wire material from different positions. Molding l:, axis 1
- and is wound spirally, and at the same time, during this winding, the side edges of the strip material are successively overlapped and welded, the so-called strip material is formed into a peripheral wall, and the wires are placed inside this peripheral wall. It was manufactured by welding materials together.
（発明が解決しようとする問題点）
処で１・、記の如き方法により製造された合成樹脂管は
、条素材と線素材とが溶着されているので、その使用時
第１１．１２図に小す如く条素材からなる周壁（１Ｎ）
と線素材からなる補強条（１２）との溶着端近く、即ち
Ａ部が繰り返し鋭角的に屈曲され、かつＡ 都に応力集
中が１１、じ、このＩＩｓにおいて破断するごとき問題
があった。(Problems to be Solved by the Invention) 1. In the synthetic resin pipe manufactured by the method described above, the strip material and the wire material are welded together, so when using the synthetic resin pipe, as shown in Figure 11.12. Peripheral wall made of small strip material (1N)
There was a problem in that the area near the welded end of the reinforcing strip (12) made of a wire material, that is, the part A, was repeatedly bent at an acute angle, and the stress concentration on the part A caused the reinforcing strip (12) to break at point IIs.
（問題点を解決するための丁゛段）
本発明は１・、記した如き問題点を解決すべ〈発明した
もので、円筒状の周壁に補強条を螺旋状に設けてなる合
成樹脂管であって、前記用＾１．ｆに螺旋状の中空Ｌ１
部を一体的に形成して、該筒部内に補強条となる線素材
を挿１１（保持させ、かつこの線素材を筒部に対し非溶
着性の合成樹脂により形成して、線素材をも１部内で相
対遊動＋ｉＪ能としたことに特徴を自する合成樹脂管、
及び゛１ｔ、溶融状の合成樹脂製条素材と、これとは別
の合成樹脂製線素材とを成形用主軸に螺旋状に巻付けて
、周壁に螺旋状の補強条をもつ合成樹脂管を製造する方
法であって、前記条素材を中空筒部と該筒部から延びる
板部とをもつ断面形状とし、この筒部内に前記線素材を
押しだして、前記条素材と線素材とを成形用主軸に同時
供給により螺旋状に巻付ける 一方、前記線素材として
条素材に対し非溶着性の合成樹脂を用いたことに特徴を
汀する合成樹脂管の製造方法に係るものである。(Steps for solving the problems) The present invention aims to solve the problems as described in 1. The present invention is a synthetic resin pipe having a cylindrical peripheral wall provided with reinforcing strips in a spiral shape. Yes, for the above^1. Spiral hollow L1 in f
A wire material serving as a reinforcing strip is inserted (11) and held in the tubular portion, and the wire material is made of a non-weldable synthetic resin to the tubular portion. A synthetic resin pipe characterized by relative movement + iJ ability within one part.
And 1t, a synthetic resin pipe with a spiral reinforcing strip on the peripheral wall is made by winding a molten synthetic resin strip material and a different synthetic resin wire material in a spiral around a molding main shaft. A manufacturing method, wherein the strip material has a cross-sectional shape having a hollow cylindrical portion and a plate portion extending from the cylindrical portion, the wire material is extruded into the cylindrical portion, and the strip material and the wire material are used for forming. The present invention relates to a method for manufacturing a synthetic resin pipe, which is wound spirally around a main shaft by simultaneous supply, and is characterized in that a synthetic resin that does not adhere to the strip material is used as the wire material.
（作用）
１゛、記ｒ段によれば、条素材により形成される周壁に
対し、線素材により形成される補強条が非接着状態にあ
るので、換＋ｉすれば条素材の中空筒部と、該筒部内の
線素材とが相対遊動ＩＩ）能であるから、前屈１１旧、
′Ｊにおける周壁の軸線方向伸び（屈曲内側が圧縮、屈
曲外側が伸長）に対し、筒部の径方向伸びが線素材によ
り阻害されるようなことなく自１１１に許容され、所謂
筒部が略楕円形等に変形するのであって、前記周壁を構
成する板部は筒部から滑らかな曲面を介して延びること
になり、従って条素材における筒部と板部との境界部分
が繰り返し鋭角的に屈曲されるようなことがな（、また
応力が集中するようなことがないのである。(Function) 1. According to step R, the reinforcing strip formed by the wire material is not adhered to the peripheral wall formed by the strip material, so if the reinforcing strip is replaced with +i, it becomes the hollow cylindrical portion of the strip material. , since the wire material in the cylinder part is capable of relative movement II), forward bending 11 old,
With respect to the axial elongation of the peripheral wall at 'J' (compression on the inner side of the bend and expansion on the outer side of the bend), the radial elongation of the cylindrical portion is allowed in the direction 111 without being hindered by the wire material, and the so-called cylindrical portion is approximately The plate part constituting the peripheral wall extends from the cylindrical part via a smooth curved surface, so that the boundary between the cylindrical part and the plate part in the strip material repeatedly forms an acute angle. There is no bending (and no stress concentration).
（実施例） 以ド本発明の実施例を図面に基づいて詳細に説明する。(Example) Embodiments of the present invention will now be described in detail with reference to the drawings.
第１図は本発明方法により製造された流し台用ホースな
どとして用いられ゛る合成樹脂管を示すもので、図にお
いて（１１）は円筒状の周壁、（１２）は周壁内側に設
けた螺旋状の補強条である。Figure 1 shows a synthetic resin pipe manufactured by the method of the present invention used as a sink hose, etc. In the figure, (11) is a cylindrical peripheral wall, and (12) is a spiral pipe provided inside the peripheral wall. This is the reinforcing strip.
前記周壁（１１）は、例えば軟質塩化ビニール樹脂から
なる条素材（ａ）を用い、該条素材（ａ）を後記する如
（成形用ｌ：、軸（３）に対し螺旋状に巻付け、かつこ
の巻付は時条素材（ａ）の側縁部を順次重ねて溶着する
ことにより、円筒状に形成されており、また前記補強条
（１２）は、例えば他の樹脂に対し非溶着性のポリエチ
レンや、ポリプロピレンなどオレフィン系樹脂からなる
線素材（ｂ）によって形成されるもので、この線素材（
ｂ）は、前記条素材（ａ）に一体的に形成された中空筒
部（ａ、 ）内に挿嵌され、これにより線素材（ｂ）が
条素材（ａ）の筒部（ａｌ）内に相対遊動１１Ｔ能に保
持されるのであるしかして前記条素材（ａ）及び線素材
（ｂ）は、口゛含酸形部（２１）と該成形部（２１）に
続（板状成形部（２２）、並びに前記筒状成形部（２１
）の中心に独＼γして形成した線状成形部（２３）とを
もつ成形用ダイ（２）によりそれぞれ成形されるもので
、先ず成形用ダイ（２）のＬ１゛状成形部（２１）と板
状成形部（２２）とがら溶融した軟質塩化ビニール樹脂
を押しだして、中空筒部（ａ＋ ）と該筒部（ａ、）
から 一体的に剋びる板部（ａりとをもつ゛１１溶融状
の条素材（ａ）を形成する。またこれと同時に成形用ダ
イ（２）の線状成形部（２３）から溶融したオレフィン
系樹脂を押しだして、゛ｌ′−溶融状の線素材（ｂ）を
成形する。この線素材（ｂ）は前記条素材（ａ）のα１
°部（ａ、 ）内に押出成形されている。The peripheral wall (11) is made of a strip material (a) made of, for example, a soft vinyl chloride resin, and the strip material (a) is wound spirally around the shaft (3) as described below. This winding is formed into a cylindrical shape by sequentially overlapping and welding the side edges of the strip material (a), and the reinforcing strip (12) is made of, for example, a material that is non-weldable to other resins. This wire material (b) is made of polyethylene or olefin resin such as polypropylene.
b) is inserted into the hollow cylindrical portion (a, ) integrally formed with the strip material (a), whereby the wire material (b) is inserted into the cylindrical portion (al) of the strip material (a). Thus, the strip material (a) and the wire material (b) are connected to the acid-containing molded part (21) and the molded part (21) (plate-shaped molded part). (22), and the cylindrical molded part (21
) is formed by a molding die (2) having a linear molding part (23) formed independently at the center of the molding die (2). ) and the plate-shaped molded part (22) by extruding the molten soft vinyl chloride resin to form the hollow cylinder part (a+) and the cylinder part (a, ).
A molten strip material (a) having a plate portion (a) extending integrally therefrom is formed. At the same time, molten olefin is released from the linear forming portion (23) of the forming die (2). The resin is extruded to form a molten wire material (b).This wire material (b) has α1 of the strip material (a).
It is extruded into part (a, ).
次いで１−記の如く成形用ダイ（２）から押出成形され
た条素材（ａ）と線素材（ｂ）とを成形用主軸（３）に
供給して、螺旋状に巻付ける。このとき条素材（ａ）に
おける板部（ａ、）の遊端側縁部を筒部（ａ、ｌＬに順
次重ねて溶着する。Next, as described in 1-, the strip material (a) and the wire material (b) extruded from the forming die (2) are supplied to the forming main shaft (3) and wound spirally. At this time, the free end side edges of the plate portions (a,) of the strip material (a) are successively overlapped and welded to the cylindrical portions (a, 1L).
前記成形用ｌ（軸（３）は、例えば第８図に示す如く傾
斜した多数のコロ（３１）をもつ外筒（３２）を備え、
主軸（３）の回動による各コロ（３Ｉ）の回動により、
１−記した如く供給された条素材（ａ）と線素材（ｂ）
は順次引取られ、条素材（ａ）は円筒状の周壁（！ｌ）
として、線素材（ｂ）は螺旋状の補強壁（ｂ）としてそ
れぞれ成形され、所謂周壁（ＩＩ）に螺旋状の補強襲（
１２）が設けられた合成樹脂管として仕１−げられるの
′である。The molding l (shaft (3)) is provided with an outer cylinder (32) having a large number of inclined rollers (31), as shown in FIG. 8, for example,
Due to the rotation of each roller (3I) due to the rotation of the main shaft (3),
1- Strip material (a) and wire material (b) supplied as described
are taken up sequentially, and the strip material (a) has a cylindrical peripheral wall (!l).
As shown in FIG.
12) is constructed as a synthetic resin pipe.
なお本発明は１−記した如き製造方法に限定されるもの
ではなく、適宜改良、あるいは設定変更をノ用え１町Ｉ
るものである。Note that the present invention is not limited to the manufacturing method as described in 1-1, but may be modified or changed as appropriate.
It is something that
例えば第４図にｔＪ＜す如（条素材（ａ）における板部
（ａ、）の長さを、条素材（ａ）を成形用主軸（３）に
巻付ける螺旋ピッチの２倍量１−として、その巻付は時
に板部（ａ、）が２個またはそれ以」−の筒部（ａ、
）に小会溶着すべくしてもよい。For example, in Fig. 4, tJ As such, the winding is sometimes carried out with two or more plate parts (a,) - cylindrical parts (a,
) may be welded in small pieces.
また第５．６図に示す如く条素材（ａ）における、
板？ａ＜Ｃａ、 ）が筒部（ａｌ）の両側方、特に接線
方向両側に延出し、成形特管内壁が平滑になるごとくし
てもよい。In addition, as shown in Figure 5.6, in the strip material (a),
Board? a<Ca, ) may extend on both sides of the cylindrical portion (al), particularly on both sides in the tangential direction, so that the inner wall of the formed special tube is smooth.
また第７図に・１＜す如く条素材（ａ）の筒部と２個形
成してもよい。In addition, as shown in FIG. 7, two cylindrical portions of the strip material (a) may be formed as shown in FIG.
さらに回生してはいないが、線素材（ｂ）を条素材（ａ
）の釣部（ａ＋ ）内に押出成形するとき、この線素
材（ｂ）と共に被覆電線を押出すごとくしてもよく、ま
た線素材（ｂ）はｆ・め別に成形し、換１−１すれば゛
１″、溶状に押出成形しなくてもよい。Furthermore, although it is not regenerated, the wire material (b) is converted into a strip material (a).
) When extrusion molding is carried out into the fishing part (a+), the coated electric wire may be extruded together with this wire material (b), and the wire material (b) is molded separately into f/separate parts. If this is done, extrusion molding in a melted state is not necessary.
以Ｉｔの如きノ」法により製造された合成樹脂管は、条
素材（ａ）からなる円筒状の周壁（ＩＩ）に線素材（ｂ
）からなる螺旋状の補強条（１１）を、条素材（ａ）に
おける筒部（ａｌ）への線素材（ｂ）の挿嵌をして非溶
着状に保持され、換、−１°すれば条素）ｆＡ’（ａ）
の筒部（ａｌ）と、該筒部（ａｌ）内の線素材（ｂ）と
が相対遊動＋ｉＪ能になり、前屈曲時における周壁（１
１）の軸線方法伸び（Ｋｉ１曲内側では圧縮、屈曲外側
では伸長）に対し、第３図に示す如く筒部（ａ、 ）の
径方向伸が線素材（ｂ）により阻害されるようなことな
（自由に許容されて楕円形等に変形するのである。従っ
て前記筒部（ａ、 ）から−一体的に伸びる板部（ａ、
）が筒部（ａ、 ）に対し鋭角的に屈曲されるよう
な恐れがなく、所謂滑らかな曲面を介して延びることに
なり、またこの＋１部（ａｌ）と板部（ａｓ）との境界
部分において応力集中か生じるようなことがないのであ
る。Synthetic resin pipes manufactured by the above method include a cylindrical peripheral wall (II) made of a strip material (a) and a wire material (b).
) is held in a non-welded state by inserting the wire material (b) into the cylindrical portion (al) of the strip material (a), and the spiral reinforcing strip (11) is held in a non-welded state by -1°. (b) fA'(a)
The cylindrical part (al) and the wire material (b) inside the cylindrical part (al) have a relative movement of +iJ, and the peripheral wall (1
1) In contrast to the axial elongation (compression on the inside of the Ki1 bend, expansion on the outside of the bend), the radial elongation of the cylindrical portion (a, (It is freely allowed to deform into an elliptical shape etc.) Therefore, the plate part (a,
) will not be bent at an acute angle with respect to the cylindrical part (a, ), and will extend through a so-called smooth curved surface, and the boundary between this +1 part (al) and the plate part (as) There is no possibility of stress concentration occurring in any part.
（発明の効果）
以１・説明した如く本発明によるときは、螺旋状の補強
条をもつ合成樹脂管を安価にかつ筒中容易に製造するこ
とができ、それでいてその耐強度を高め、特に屈曲時に
おけるＪ、：、１壁の補強条保持部近くでの破断を確実
に防１１・せしめ得るに至ったのである。(Effects of the Invention) As explained in 1., according to the present invention, a synthetic resin pipe with spiral reinforcing stripes can be manufactured easily at low cost, and its strength can be increased, especially when bent. It has now been possible to reliably prevent rupture near the reinforcing strip holding portion of the J, 1 wall.
第１図は本発明方法により製造された合成樹脂管の−・
都切欠１ｎｆｉ図、第２図は同合成樹脂管を製造するた
めの素材拡大断面図、第３図は同合成樹脂管の屈曲時に
おける部分縦断面図、第４図乃至第７図は別の実施例を
示すもので、第４図及び第６図は部分縦断面図、第５図
及び第７図は素材断面図、第８図は製造装置の・部切欠
平面図、第９図はその要部横断面図、第１０図は同正面
図、第１１図は従来品の部分縦断面図、第１２図はその
に＋ｉ曲時における部分縦断面図である。
（ａ）・・・条素材、（ａ、 ）・・・中空筒部、（
ａ、）・・・板部、（ｂ）・・・線素材、（１１）・・
・周壁、（＋２）・・・補強条。
ロ ＩＯ！
Ｚ
第 ２ 図
第３図
Ｏ
第４Ｖ
第５図
ｍ７ｒ：ｉ４
第１Ｉ図
第１２図
ｔａｃｔ’５
ｊｌ１９ 図Figure 1 shows a synthetic resin pipe manufactured by the method of the present invention.
Figure 2 is an enlarged cross-sectional view of the material for manufacturing the same synthetic resin pipe, Figure 3 is a partial vertical cross-sectional view of the same synthetic resin pipe when bent, and Figures 4 to 7 are different views. 4 and 6 are partial vertical sectional views, FIG. 5 and 7 are sectional views of the material, FIG. 8 is a partially cutaway plan view of the manufacturing device, and FIG. 9 is its partial longitudinal sectional view. 10 is a front view of the same, FIG. 11 is a partial longitudinal sectional view of the conventional product, and FIG. 12 is a partial longitudinal sectional view of the conventional product at the +i bend. (a)...Stripe material, (a, )...Hollow cylinder part, (
a,)...Plate part, (b)...Wire material, (11)...
- Peripheral wall, (+2)...reinforcement strip. Ro IO! Z Fig. 2 Fig. 3 O Fig. 4 V Fig. 5 m7r:i4 Fig. 1I Fig. 12 tact'5 jl19 Fig.
Claims (2)
樹脂管であって、前記周壁に螺旋状の中空筒部を一体的
に形成して、該筒部内に補強条となる線素材を挿嵌保持
させ、かつこの線素材を筒部に対し非溶着性の合成樹脂
により形成して、線素材を筒部内で相対遊動可能とした
ことを特徴とする合成樹脂管。(1) A synthetic resin pipe in which a reinforcing strip is spirally provided on a cylindrical peripheral wall, wherein a spiral hollow cylindrical portion is integrally formed on the peripheral wall, and a reinforcing strip is formed within the cylindrical portion. A synthetic resin pipe characterized in that a material is inserted and held, and the wire material is made of a synthetic resin that does not adhere to the cylindrical portion, so that the wire material can move relative to the cylindrical portion.
成樹脂製線素材とを成形用主軸に螺旋状に巻付けて、周
壁に螺旋状の補強条をもつ合成樹脂管を製造する方法で
あって、前記条素材を中空筒部と該筒部から延びる板部
とをもつ断面形状とし、この口部内に前記線素材を押し
だして、前記条素材と線素材とを成形用主軸に同時供給
により螺旋状に巻付ける一方、前記線素材として条素材
に対し非溶着性の合成樹脂を用いたことを特徴とする合
成樹脂管の製造方法。(2) A synthetic resin pipe with a spiral reinforcing strip on the peripheral wall is made by winding a semi-molten synthetic resin strip material and a different synthetic resin wire material in a spiral around a molding main shaft. A method for manufacturing, wherein the strip material has a cross-sectional shape having a hollow cylindrical portion and a plate portion extending from the cylindrical portion, the wire material is extruded into the mouth portion, and the strip material and the wire material are used for forming. A method for manufacturing a synthetic resin pipe, characterized in that the synthetic resin pipe is wound helically around a main shaft by simultaneous supply, and a synthetic resin that does not adhere to the strip material is used as the wire material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61071722A JPS62227633A (en) | 1986-03-28 | 1986-03-28 | Synthetic resin tube and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61071722A JPS62227633A (en) | 1986-03-28 | 1986-03-28 | Synthetic resin tube and manufacture thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62227633A true JPS62227633A (en) | 1987-10-06 |
| JPH0564099B2 JPH0564099B2 (en) | 1993-09-13 |
Family
ID=13468697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61071722A Granted JPS62227633A (en) | 1986-03-28 | 1986-03-28 | Synthetic resin tube and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62227633A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02109551U (en) * | 1989-02-18 | 1990-09-03 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3679531A (en) * | 1968-04-05 | 1972-07-25 | Dynamit Nobel Ag | Shaped section of a thermoplastic synthetic material |
| JPS52114114A (en) * | 1976-03-19 | 1977-09-24 | Kuraray Plastics Co | Thermal insulating flexible hose |
| JPS52139527U (en) * | 1976-04-19 | 1977-10-22 | ||
| JPS59131682U (en) * | 1983-02-23 | 1984-09-04 | 東海ゴム工業株式会社 | Reinforced core hose |
-
1986
- 1986-03-28 JP JP61071722A patent/JPS62227633A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3679531A (en) * | 1968-04-05 | 1972-07-25 | Dynamit Nobel Ag | Shaped section of a thermoplastic synthetic material |
| JPS52114114A (en) * | 1976-03-19 | 1977-09-24 | Kuraray Plastics Co | Thermal insulating flexible hose |
| JPS52139527U (en) * | 1976-04-19 | 1977-10-22 | ||
| JPS59131682U (en) * | 1983-02-23 | 1984-09-04 | 東海ゴム工業株式会社 | Reinforced core hose |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02109551U (en) * | 1989-02-18 | 1990-09-03 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0564099B2 (en) | 1993-09-13 |
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