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JPS6320489B2 - - Google Patents

Info

Publication number
JPS6320489B2
JPS6320489B2 JP10495479A JP10495479A JPS6320489B2 JP S6320489 B2 JPS6320489 B2 JP S6320489B2 JP 10495479 A JP10495479 A JP 10495479A JP 10495479 A JP10495479 A JP 10495479A JP S6320489 B2 JPS6320489 B2 JP S6320489B2
Authority
JP
Japan
Prior art keywords
water
conduit
channel
pattern
irrigation
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
Application number
JP10495479A
Other languages
Japanese (ja)
Other versions
JPS5629935A (en
Inventor
Tetsuya Aoki
Hirosuke Okada
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.)
Tosoh Corp
Original Assignee
Tosoh 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 Tosoh Corp filed Critical Tosoh Corp
Priority to JP10495479A priority Critical patent/JPS5629935A/en
Publication of JPS5629935A publication Critical patent/JPS5629935A/en
Publication of JPS6320489B2 publication Critical patent/JPS6320489B2/ja
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General 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
    • B29C66/71General 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

Landscapes

  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Description

【発明の詳細な説明】 本発明は、農園芸施設において潅水及び施肥を
効果的に行うための、コンパクトで取り扱い易
く、安価で強固な点滴形潅水パイプを製造する方
法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a compact, easy-to-handle, inexpensive, and strong drip-type irrigation pipe for effectively performing irrigation and fertilization in agricultural and horticultural facilities.

点滴潅漑とは、潅水器具を地表あるいは地表下
に敷設して、圧力水を減圧して、作物の根のまわ
りに直接に少流量を長時間供給する方法で、従来
のうね間法や散水法に比べ(1)節水、(2)増収、(3)塩
害抑制などの利点があり、乾燥地や砂地等に適し
た新しい潅漑方式である。
Drip irrigation is a method in which irrigation equipment is installed on or below the surface of the ground to reduce pressure and supply a small flow of water directly around the roots of crops over a long period of time, compared to traditional furrow methods or watering. It is a new irrigation method that is suitable for dry areas and sandy areas, and has the advantages of (1) water savings, (2) increased yields, and (3) reduced salt damage compared to conventional methods.

上述の点滴潅漑用潅水器具の主なものとして、
(1)内部にらせん状の小口径流路を設けた潅水ノズ
ル、および(2)内壁と外壁に設けた小孔を通して水
が流出するようにした2重壁管が知られている。
The main types of drip irrigation equipment mentioned above are:
Two types of irrigation nozzles are known: (1) an irrigation nozzle with a small-diameter spiral flow path provided therein, and (2) a double-walled pipe in which water flows out through small holes provided in the inner and outer walls.

これら従来の潅水器具は、流出量が微少になる
よう工夫されており、長尺で使用した場合でも先
端での流出量がそれ程低下せず、均一に潅水でき
る特徴を有するものの、形状が小形の割に複雑な
ため、手の込んだ製造手段を必要とするので、製
造効率が低く、高価になるという問題点を有して
いた。
These conventional irrigation devices have been devised to minimize the amount of outflow, and even when used in long lengths, the amount of outflow at the tip does not decrease significantly and can irrigate uniformly. Since it is relatively complex and requires elaborate manufacturing means, it has problems of low manufacturing efficiency and high cost.

先に本発明者らはこの問題点を解決する点滴形
潅水パイプおよびその製法を発明し、特許出願を
行つた。(特公昭57−16612号公報)。即ち同種又
は異種の熱可塑性樹脂から少なくともなる帯状の
積層フイルムの積層面の長手中央が剥離して形成
する導管部と、この導管部の両長手側面にひれ状
に突き出た積層接合部よりなり、この接合部の少
なくとも一方に、導管部から枝分かれし、かつ絞
り部を有する流路模様で積層部が剥離して形成す
る散水流路を有する事を特徴とする点滴形潅水パ
イプでその製法として剥離部は剥離性皮膜を設け
この上に熱可塑性樹脂フイルムをラミネートする
方法である。
Previously, the present inventors invented a drip-type irrigation pipe and a method for manufacturing the same to solve this problem, and filed a patent application. (Special Publication No. 57-16612). That is, it consists of a conduit part formed by peeling off the longitudinal center of the laminated surface of a strip-shaped laminated film made of at least the same or different thermoplastic resins, and a laminated joint part protruding like a fin from both longitudinal sides of this conduit part, A drip-type irrigation pipe characterized by having, at least one of the joint parts, a watering channel that branches from the conduit part and is formed by peeling the laminated part in a flow passage pattern having a constricted part, and its manufacturing method is peeling. The second method is to provide a peelable film and laminate a thermoplastic resin film thereon.

しかしながら農業資材として更に強度の耐久性
を要求する場合ラミネート加工が可能な熱可塑性
樹脂には限界がある。そこで原料熱可塑性樹脂の
選定の範囲の広いシールロールにより熱融着する
事により点滴形潅水パイプを製造する事を発明し
た。
However, there are limits to thermoplastic resins that can be laminated when higher strength and durability are required as agricultural materials. Therefore, we invented a method of manufacturing drip-type irrigation pipes by heat-sealing raw material thermoplastic resins with a seal roll that can be selected from a wide range of options.

即ち、本発明は同種又は異種の二枚の熱可塑性
樹脂の帯状フイルムを重ね合せ、表面に導管部と
流路模様のパターンを凹部として有するシールロ
ールの凸部で該二枚のフイルムを熱融着させるこ
とにより長手中央部に導管部を、そしてこの導管
部の両長手側面にひれ状に突き出た積層接合部を
形成させ、この接合部の少なくとも一方に、導管
部から枝分かれし、かつ絞り部を有する流路模様
の散水流路を形成させることを特徴とする点滴形
潅水パイプの製造方法である。
That is, in the present invention, two strip-shaped films of the same or different types of thermoplastic resin are superimposed, and the two films are thermally melted using the convex portion of a seal roll having a pattern of conduit portions and channel patterns as concave portions on the surface. A conduit part is formed in the longitudinal center of the conduit part, and laminated joint parts protruding like fins are formed on both longitudinal sides of this conduit part, and at least one of these joint parts has a conduit part that branches from the conduit part and has a constricted part. This is a method for manufacturing a drip-type irrigation pipe characterized by forming a watering channel having a channel pattern.

以下本発明を図面を用いながら説明する。 The present invention will be explained below using the drawings.

本発明の潅水パイプは第1図(製造工程略図)
に例示したような製造工程により製造される。ま
ずフイルム原反1,1′は予熱ロール2,2′にて
引取られ、表面に導管部および流路模様のパター
ンを凹部として有する熱ロール3とプレスロール
4からなるシールロールで挟まれて、該熱ロール
の凸部とプレスロールで圧着されて熱融着され冷
却ロール5,5′にて冷却され、引取ロール7,
7′を経て製品8,8′として巻取られる。
The irrigation pipe of the present invention is shown in Figure 1 (schematic diagram of the manufacturing process).
It is manufactured by the manufacturing process as exemplified in . First, the raw film 1, 1' is taken up by preheating rolls 2, 2', and is sandwiched between sealing rolls consisting of a heating roll 3 and a press roll 4, each having a pattern of conduit portions and channel patterns as concave portions on the surface. The convex portion of the heat roll is pressed and heat-sealed with a press roll, cooled by cooling rolls 5, 5', and taken up by take-up rolls 7, 5'.
7' and then wound up as products 8, 8'.

この際広巾フイルムを用い多数のパターンを同
時に形成せしめ製品として巻取る前に隣り合うパ
ターンの間を長手方向にスリツター6でスリツト
することにより、一つの製造系列から多数の製品
を効率よく製造することができる。
At this time, by forming a large number of patterns simultaneously using a wide film and slitting the spaces between adjacent patterns in the longitudinal direction with a slitter 6 before winding up the product, a large number of products can be efficiently manufactured from one production line. Can be done.

また、熱融着をさせる際に予熱ロールと冷却ロ
ールを設ければライン・スピード(生産性)を大
きくする事ができるが、勿論シール・ロールのみ
の簡単な装置で熱融着させても良い。いずれの場
合もラミネーシヨン法による加工法に比較して設
備費が大巾に安くなる事が利点となる。熱融着の
方法としては導管部および流路の周囲を線状に熱
融着する方法と導管部および流路以外の全面を熱
融着する方法がある。
In addition, line speed (productivity) can be increased by providing a preheating roll and a cooling roll when performing heat fusing, but of course heat fusing can also be performed using a simple device that only includes seal rolls. . In either case, the advantage is that the equipment cost is significantly lower than the lamination method. There are two methods of thermal welding: a method of linearly heat-sealing the periphery of the conduit portion and the flow path, and a method of heat-sealing the entire surface other than the conduit portion and the flow path.

熱融着にあたつてはこまかい流路模様を正確に
作成するために二枚のフイルムをしわがよらない
ように重ね合せて送り込むことが必要である。
During heat fusing, in order to accurately create a fine channel pattern, it is necessary to feed the two films overlapping each other to avoid wrinkles.

フイルム原反は円筒状フイルムを偏平にして巻
取つたものを用いても良いし、一枚のフイルムか
らなる二枚の原反を用いても良い。
The raw film may be a cylindrical film that is flattened and wound, or two raw films each made of one film may be used.

従つてフイルム原反は一般に加工されているイ
ンフレーシヨン法によるものでもT−ダイ法によ
るものでも良い。
Therefore, the film material may be processed by the commonly used inflation method or by the T-die method.

本発明に用いられる熱可塑性樹脂にはポリエチ
レン、エチレン共重合体、ポリプロピレン、ポリ
塩化ビニル、ポリエステル、ポリスチレン、ポリ
アミド、ポリウレタンなどの熱可塑性樹脂及びそ
れらのポリマー・ブレンドがある。
Thermoplastic resins used in the present invention include thermoplastic resins such as polyethylene, ethylene copolymers, polypropylene, polyvinyl chloride, polyesters, polystyrene, polyamides, polyurethanes, and polymer blends thereof.

中でもエチレン−酢酸ビニル共重合体、ポリエ
チレン、軟質ポリ塩化ビニルなどの可撓性に富む
ものが水の流出を容易にするため好ましい。
Among them, highly flexible materials such as ethylene-vinyl acetate copolymer, polyethylene, and soft polyvinyl chloride are preferred because they facilitate the outflow of water.

更に耐久性及び耐熱性の勝れた点滴形潅水パイ
プを作るには高分子量でメルトインデツクスの小
さいグレードを使用するのが好ましい。又耐スト
レス・クラツク性を付与する為ポリマー・ブレン
ド等も有効であるが、これ等の加工法はラミネー
シヨン法よりヒート・シール法の方が有利であ
る。
Furthermore, in order to produce drip-type irrigation pipes with excellent durability and heat resistance, it is preferable to use a grade with a high molecular weight and a low melt index. Polymer blends are also effective in imparting stress and crack resistance, but heat sealing is more advantageous than lamination.

尚、フイルムとは通常0.2mm未満のものを指す
用語であるが、こゝでは0.2mm以上のものも含め
てフイルムと呼ぶこととする。フイルムとしては
単一樹脂からなるフイルムばかりでなく、異なる
樹脂を組み合わせた複合フイルムや繊維などで補
強したフイルムなども使用できる。
Incidentally, the term "film" usually refers to anything less than 0.2 mm, but in this case, the term "film" includes anything larger than 0.2 mm. As the film, not only a film made of a single resin, but also a composite film made of a combination of different resins, a film reinforced with fibers, etc. can be used.

以上のようにして作られた本発明の潅水パイプ
を使用する際は第2図に示す帯模様Aの端部に水
を導けばパイプ状にふくらみ、導管部内の水はさ
らに、帯模様から枝分かれした流路模様Bに侵入
していく。
When using the irrigation pipe of the present invention made as described above, if water is guided to the end of the band pattern A shown in Figure 2, it will swell into a pipe shape, and the water within the conduit will further branch out from the band pattern. The flow path pattern B is invaded.

ここで流路模様Bの形が非常に重要であつて(1)
低い水圧で導管部内の水が流路模様に侵入し、水
が流出し始めること(低い流出開始圧)、および
(2)流出量が水圧と共におだやかに増加していき、
安定した流出量を示すこと、を実現させるために
は、絞り部を有する流路模様にすることが、重要
な条件である。本発明による絞り部を有する流路
模様のいくつかの実施例は第3図乃至第13図に
示すとおりであるが、これらの形のみに限定され
るものではない。
Here, the shape of channel pattern B is very important (1)
Water in the conduit enters the channel pattern at low water pressure and begins to flow out (low outflow starting pressure);
(2) The amount of outflow increases gradually with water pressure,
In order to achieve a stable flow rate, it is important to have a channel pattern with constrictions. Some embodiments of the channel pattern having constrictions according to the present invention are shown in FIGS. 3 to 13, but the present invention is not limited to these shapes.

一方絞り部のない流路模様の例を第14図乃至
第16図に示す。図中のaは帯模様Aから流路模
様Bへの入口の線巾、bは絞り部の線巾、cは絞
り部の長さである。b/aを絞り率と呼ぶことに
する。適当な範囲はa=3〜20mm,b/a=0.7
〜0.1、さらに好ましくはa=5〜15mm,b/a
=0.5〜0.2であり、要求される流出開始圧、要求
される流出量、要求される耐圧強度、水に含まれ
る異物による目づまり防止、使用する熱可塑性樹
脂の種類および肉厚等を考慮して適宜選択され
る。
On the other hand, examples of flow path patterns without constricted portions are shown in FIGS. 14 to 16. In the figure, a is the line width of the inlet from the band pattern A to the channel pattern B, b is the line width of the constricted portion, and c is the length of the constricted portion. Let b/a be called the aperture ratio. Appropriate range is a=3~20mm, b/a=0.7
~0.1, more preferably a=5-15mm, b/a
= 0.5 to 0.2, taking into account the required flow start pressure, required flow rate, required pressure resistance, prevention of clogging due to foreign matter contained in water, type of thermoplastic resin used, wall thickness, etc. be selected as appropriate.

絞り部の長さCは、第3〜8図のようにC=0
すなわち瞬間的に絞る形でも良いし、第9〜13
図のように長さのある形でも良い。絞り部は第1
3図のように流路途中に複数個設けても良いし、
また第12図のように1つの入口に対して複数個
設けても良い。絞り部は通常、帯模様Aから流路
模様Bへの入口の近傍に設けられる。潅水ホース
における流路模様は非常に重要である。流路の太
さと長さは潅水を大気圧中に放出するための方向
と圧力を決定している。
The length C of the aperture part is C=0 as shown in Figures 3 to 8.
In other words, it can be tightened instantaneously, or
It may also have a long shape as shown in the figure. The aperture part is the first
As shown in Figure 3, multiple pieces may be provided in the middle of the flow path,
Further, as shown in FIG. 12, a plurality of such devices may be provided for one entrance. The constriction section is usually provided near the entrance from the band pattern A to the channel pattern B. The flow pattern in irrigation hoses is very important. The width and length of the channel determines the direction and pressure for discharging the irrigation water into atmospheric pressure.

特に点滴形において圧力水は大気中に放出され
る場合、大気圧にごく近い圧力にまで減圧される
必要がある。そのため流路途中、特に放出口近傍
に流路の変化があると流路中の水は流速が変化し
導搬されて来た水垢、鉄分粉子等がその部位に非
常に溜りやすくなる。一度溜り出すと流路の上流
部へと詰りが成長していき流路としての機能が消
失する。
When pressurized water is discharged into the atmosphere, especially in a drip type, it is necessary to reduce the pressure to a pressure very close to atmospheric pressure. Therefore, if there is a change in the flow path in the middle of the flow path, especially near the outlet, the flow velocity of the water in the flow path will change, and transported limescale, iron particles, etc. will be very likely to accumulate in that area. Once accumulated, the blockage grows toward the upstream part of the flow path and loses its function as a flow path.

しかるに、流路模様Bの入口附近は帯状模様A
の圧力が充分得られる状態で導搬されて来た狭雑
物を押し流すことができる。そのため圧力の高い
部位で潅水をコントロールすることが不可欠の要
素となる。
However, near the entrance of channel pattern B, band pattern A
With sufficient pressure, it is possible to wash away the impurities that have been brought in. Therefore, it is essential to control irrigation in areas of high pressure.

絞り部は帯状模様Aからの圧力を急激に降下さ
せると同時に、潅水を混ざる狭雑物を充分下流に
押し流す圧力をも有する必要がある。
The constriction part must have enough pressure to rapidly reduce the pressure from the band pattern A and at the same time to sufficiently sweep away the debris that mixes with the irrigation water downstream.

そこで絞りで圧力降下した潅水は流速の変化な
しに、圧力損失だけの効果を受けて下流へと流れ
ることが望ましい。そのため絞り部は帯模様Aか
ら流路模様Bへの入口の近傍に設けることが望ま
しいのである。
Therefore, it is desirable that the irrigation water whose pressure has been reduced by the restriction flow downstream without any change in flow velocity, with only the effect of pressure loss occurring. Therefore, it is desirable to provide the constriction portion near the entrance from the band pattern A to the channel pattern B.

絞り部を有する流路模様(第3図)と絞り部の
ない流路模様(第14図)に水圧をかけた時の、
水圧と流出量の関係を比較した例を第17図に示
す。絞り部のない場合は図中のイのような関係に
なり、導管部内の水が流路模様に侵入し、水が流
出し始めるのに、高い水圧をかけることが必要で
あり、また流出量が急激に増大するので流出量を
制御することが難しく、潅水パイプとして実用で
きないことがわかる。これに対し絞り部を設けた
場合は、図中のロのような関係になり、低い水圧
でもスムースに水が流出し始め、また流出量が水
圧とともにおだやかに増加していき、安定した流
出量を示すことがわかる。絞り部のない場合は、
帯模様Aから流路模様Bへの入口が、低い水圧で
は弁のように閉じた形になつていて、高い水圧を
かけて始めて、この入口が開き始め、流出量が急
激に増大するのが観察されるのに対し、絞り部を
設けた場合は、入口から絞り部までの区間が低い
水圧でもふくらみ始め、このふくらんだ状態が持
続して結局入口の弁が開いた形になつているのが
観察される。
When water pressure is applied to a channel pattern with a constricted part (Fig. 3) and a channel pattern without a constricted part (Fig. 14),
Fig. 17 shows an example comparing the relationship between water pressure and outflow amount. If there is no constriction part, the relationship will be as shown in A in the figure, and the water in the conduit will enter the flow path pattern, and it will be necessary to apply high water pressure for the water to start flowing out, and the amount of outflow will be It can be seen that it is difficult to control the amount of outflow due to the rapid increase in the amount of water, and that it cannot be put to practical use as an irrigation pipe. On the other hand, if a constriction part is provided, the relationship will be as shown in the figure (b), and the water will start to flow out smoothly even at low water pressure, and the outflow amount will gradually increase with the water pressure, resulting in a stable outflow amount. It can be seen that this shows that If there is no constriction part,
The inlet from band pattern A to channel pattern B is closed like a valve at low water pressure, and when high water pressure is applied, this inlet begins to open and the outflow volume increases rapidly. On the other hand, when a constriction is provided, the section from the inlet to the constriction begins to swell even at low water pressure, and this swollen state continues until the inlet valve becomes open. is observed.

絞り部を設けると上述のような顕著な効果がも
たらされるのは、以上のような理由からと考えら
れるが、流路に絞り部を設ける工夫は従来の方法
および器具からは予想することのできない新規な
工夫であり、本発明独特の方式である。
It is thought that the reason why the provision of a constriction section brings about the remarkable effects mentioned above is due to the reasons mentioned above, but the idea of providing a constriction section in the flow path cannot be expected from conventional methods and devices. This is a novel idea and a method unique to the present invention.

絞り部以外の流路の形は、単なる直管状でも差
し支えないが、更に流出量を微妙に制限できる
こと、導管部内の圧力水を効果的に減圧し、水
の流出状態を水滴状ないしおだやかな噴水状にで
きること、水の中に含まれる異物によつて目づ
まりを起しにくいこと等の実用上の要求を満足さ
せるために、その形を工夫することが好ましい。
その工夫の実例を第2図に示すが、何らこれに制
限されるものではない。
The shape of the flow path other than the constriction part may be a simple straight pipe, but it is also possible to subtly restrict the amount of outflow, and the pressure water in the conduit can be effectively reduced, and the flow of water can be changed to a droplet shape or a gentle fountain. It is preferable to devise a shape in order to satisfy practical requirements such as being able to form a shape and being less likely to be clogged by foreign substances contained in water.
An example of such a device is shown in FIG. 2, but the invention is not limited to this in any way.

本発明の潅水パイプは第18図に示すようにコ
ンパクトに巻取られた形で取り扱われる。使用す
る場合には耕地の地表あるいは地表下に第19図
に示すように長尺に引き伸ばして敷設した後、帯
模様Aの端部を水源からの水路の口9に接続す
る。末端も同様に適当な栓10を差し込み封をす
る。水を流す前は、本発明の潅水パイプは偏平な
状態であるが、次にバルブ11を開き、水路から
水を導き入れると、帯模様Aの部分が第20図に
示すようにパイプ状にふくらみ導管12が形成さ
れる。さらに帯模様Aから枝分かれした流路模様
Bの中にも水が侵入していき、流路模様Bにした
がつて、導管部の両長手側面にひれ状に突き出た
積層接合部13の内部に散水流路14が形成され
る。そしてこの散水流路14から導管部内の水が
減圧され、制限された流出量で流出してくる。
The irrigation pipe of the present invention is handled in a compact rolled form as shown in FIG. When used, the band pattern A is stretched out and laid on the surface or below the surface of the farmland in a long length as shown in FIG. 19, and then the end of the band pattern A is connected to the mouth 9 of a waterway from a water source. The end is similarly sealed by inserting a suitable stopper 10. Before flowing water, the irrigation pipe of the present invention is in a flat state, but when the valve 11 is then opened and water is introduced from the water channel, the band pattern A part becomes pipe-shaped as shown in Figure 20. A bulging conduit 12 is formed. Furthermore, water enters into the channel pattern B branched from the band pattern A, and according to the channel pattern B, water enters the inside of the laminated joint part 13 that protrudes like a fin on both longitudinal sides of the conduit part. A water sprinkling channel 14 is formed. Then, the water in the conduit section is depressurized and flows out from this water sprinkling channel 14 in a limited amount.

流出量は導管部12内の水圧と、流路模様Bの
線巾、長さ、形によつて規定される。
The outflow amount is determined by the water pressure within the conduit portion 12 and the width, length, and shape of the channel pattern B.

導管部の両長手面に設けられる散水流路の間隔
な作物の種類等使用目的に応じて適宜設定される
が、果樹などのように散水間隔が非常に大きい場
合は製造時において第2図に示すように流路模様
Bの出口をカツトしないように、図中の点線上を
スリツトしておき、使用時に潅水パイプを敷設し
た後、散水を必要とする果樹などの近傍だけ、流
路模様Bの出口をカツトすることもできる。
The spacing between the watering channels provided on both longitudinal sides of the conduit section is set appropriately depending on the purpose of use, such as the type of crop, but if the watering interval is very large, such as for fruit trees, As shown, in order not to cut the outlet of channel pattern B, a slit is made on the dotted line in the figure, and after laying the irrigation pipe during use, channel pattern B is cut only near fruit trees that require watering. It is also possible to cut the exit of

この場合には出口をカツトしていない流路模様
Bからは水が流出してこないので、散水を必要と
する果樹などの近傍だけに集中的かつ効果的に水
を供給することができて便利である。このような
使い方は従来の潅水器具では困難であり、本発明
潅水パイプの新しい特徴である。
In this case, water does not flow out from channel pattern B whose outlet is not cut, making it convenient to supply water intensively and effectively only to the vicinity of fruit trees that require watering. It is. Such usage is difficult with conventional irrigation equipment, and is a new feature of the irrigation pipe of the present invention.

本発明の潅水パイプは以上説明のごときもので
あるがこれにより以下に示すような効果が達成さ
れる。
The irrigation pipe of the present invention, as described above, achieves the following effects.

(1) 流路模様を絞り部を有する形にすることによ
り、低い水圧でも容易に散水流路が形成され、
水が流出し始め、また流出量が水圧とともにお
だやかに増加していき、安定した流出量を実現
できる。絞り部の絞り率および長さと、必要に
よつては絞り部のほかに屈折または屈曲部や分
岐部を組合わせた形により、流出量を微少に制
限でき、長尺で使用した場合でも先端での流出
量がそれ程低下せず、均一に潅水できる。また
導管部内の圧力水を効果的に減圧し、水の流出
状態を水滴状ないしおだやかな噴水状にするこ
とができ、水の中に含まれる異物による目づま
りも抑制できる。
(1) By making the channel pattern have a constricted part, the watering channel can be easily formed even at low water pressure.
The water begins to flow out, and the flow rate gradually increases along with the water pressure, making it possible to achieve a stable flow rate. The amount of outflow can be slightly restricted by the aperture ratio and length of the constriction part, and if necessary, the combination of bends, bends, or branching parts in addition to the constriction part, and even when used in long lengths, the tip The amount of water runoff does not decrease significantly, and water can be applied evenly. In addition, the pressure water in the conduit can be effectively reduced to make the water flow out in the form of droplets or a gentle fountain, and clogging caused by foreign matter contained in the water can be suppressed.

(2) 一つの製造系列から多数の製品を並行して製
造できるので、従来の潅水器具の製造方法に比
べはるかに製造効率が高い。またラミネーシヨ
ンによる加工法に較べ、使用可能な熱可塑性樹
脂の範囲が広がり耐久性の大きな製品を作る事
ができる。
(2) Since many products can be manufactured in parallel from one manufacturing line, manufacturing efficiency is much higher than conventional methods of manufacturing irrigation equipment. Furthermore, compared to processing methods using lamination, the range of thermoplastic resins that can be used is expanded, and products with greater durability can be made.

(3) 使用しない時は偏平になるのでコンパクトに
巻取ることができる。したがつて敷設、撤去が
非常に簡単であり、また運搬、保管にも便利で
ある。従来の潅水器具に比べはるかに取り扱い
やすい。
(3) Since it becomes flat when not in use, it can be rolled up compactly. Therefore, it is very easy to install and remove, and is also convenient to transport and store. Much easier to handle than traditional irrigation equipment.

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

第1図は本発明の潅水パイプの製造工程略図。
第2図は製品のスリツト前の平面図。第3〜13
図は絞り部を有する流路模様の実例を示す平面
図。第14〜16図は絞り部のない流路模様の例
を示す平面図。第17図は水圧と流出量の関係を
比較した例を示す図。第18図は本発明の潅水パ
イプの巻取られた状態を示す略図。第19図は本
発明の潅水パイプを敷設し、水源からの水路にと
りつけた状態を示す略図。第20図は水路から水
を導き入れ、本発明の潅水パイプを使用している
状態を示す略図である。 符号の説明、A……帯模様、B……流路模様、
a……帯模様Aから流路模様Bへの入口の線巾、
b……絞り部の線巾、c……絞り部の長さ、1…
…フイルム原反、2……予熱ロール、3……熱ロ
ール、4……プレスロール、5……冷却ロール、
6……スリツター、7……引取ロール、8……製
品、9……水源からの水路の口、10……栓、1
1……バルブ、12……導管部、13……積層接
合部、14……散水流路。
FIG. 1 is a schematic diagram of the manufacturing process of the irrigation pipe of the present invention.
Figure 2 is a plan view of the product before slitting. 3rd to 13th
The figure is a plan view showing an example of a channel pattern having a constriction part. FIGS. 14 to 16 are plan views showing examples of channel patterns without constricted portions. FIG. 17 is a diagram showing an example of comparing the relationship between water pressure and outflow amount. FIG. 18 is a schematic diagram showing the irrigation pipe of the present invention in a rolled up state. FIG. 19 is a schematic diagram showing the irrigation pipe of the present invention installed and attached to a waterway from a water source. FIG. 20 is a schematic diagram showing a state in which the irrigation pipe of the present invention is used by introducing water from a waterway. Explanation of symbols, A...band pattern, B...channel pattern,
a...Width of the entrance from band pattern A to channel pattern B,
b... Line width of the aperture part, c... Length of the aperture part, 1...
...Original film, 2...Preheat roll, 3...Heat roll, 4...Press roll, 5...Cooling roll,
6... Slitter, 7... Take-up roll, 8... Product, 9... Mouth of waterway from water source, 10... Stopper, 1
DESCRIPTION OF SYMBOLS 1... Valve, 12... Conduit part, 13... Laminated joint part, 14... Watering channel.

Claims (1)

【特許請求の範囲】[Claims] 1 同種又は異種の二枚の熱可塑性樹脂の帯状フ
イルムを重ね合せ、表面に下記の導管部と流路模
様のパターンを凹部として有する熱ロールとプレ
スロールで狭み、該熱ロールの凸部とプレスロー
ルで該二枚のフイルムを熱融着させることによ
り、長手中央部に導管部を、そしてこの導管部の
両長手側面にひれ状に突き出た積層接合部を、こ
の接合部の少なくとも一方に導管部から枝分かれ
しかつ絞り部の線巾/帯模様から流路模様への入
口の線巾(絞り率)が0.7〜0.1の絞り部を入口の
近傍に有する流路模様の散水流路を有する点滴形
潅水パイプを製造する方法。
1. Two thermoplastic resin strips of the same or different types are overlapped and narrowed between a heat roll and a press roll that have concave patterns of conduit portions and channel patterns as shown below on the surface, and the convex portions of the heat roll and By heat-sealing the two films with a press roll, a conduit is formed in the center of the longitudinal direction, and laminated joints protruding like fins on both longitudinal sides of the conduit are formed in at least one of the joints. It has a watering channel with a channel pattern that branches from the conduit section and has a constricted section near the inlet where the line width of the constricted section/line width of the inlet from the band pattern to the channel pattern (squeezing ratio) is 0.7 to 0.1. Method of manufacturing drip-type irrigation pipes.
JP10495479A 1979-08-20 1979-08-20 Dripping type irrigating pipe and method Granted JPS5629935A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10495479A JPS5629935A (en) 1979-08-20 1979-08-20 Dripping type irrigating pipe and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10495479A JPS5629935A (en) 1979-08-20 1979-08-20 Dripping type irrigating pipe and method

Publications (2)

Publication Number Publication Date
JPS5629935A JPS5629935A (en) 1981-03-25
JPS6320489B2 true JPS6320489B2 (en) 1988-04-27

Family

ID=14394479

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10495479A Granted JPS5629935A (en) 1979-08-20 1979-08-20 Dripping type irrigating pipe and method

Country Status (1)

Country Link
JP (1) JPS5629935A (en)

Also Published As

Publication number Publication date
JPS5629935A (en) 1981-03-25

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