JP2012005390A - Watering tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a watering tube which is prevented from causing peel-off or breakage on a branch pipe comprising a back seal part.SOLUTION: The watering tube 10A includes: a main tube 10 having a liquid-conveying path 11, a communication hole 21 formed at the outer periphery of the main tube 10 and at a space with the liquid-conveying path 11, and the branch tube 20 having a water-supply hole 22 extending outward. A reinforcing material 30 reinforcing the branch tube 20 is disposed between the main tube 10 and the branch tube 20. The reinforcing material 30 has a water-passing hole 31 and is fixedly bonded to the inner surface of the main tube 10.

Description

  The present invention relates to an irrigation tube for irrigating a plant stock.

  In order to prevent excessive irrigation of crops, drip irrigation is performed in which irrigation is performed one by one at a slow rate. As an irrigation tube for performing drip irrigation, for example, a water conveyance hose that conveys water for irrigation, openings provided in the water conveyance hose at predetermined intervals, and a water supply hole (dropping outlet) for supplying water to the crops The thing provided with the spreading | diffusion hose extended between these is proposed (for example, refer patent document 1).

  An irrigation tube used for irrigation for agriculture is obtained by assembling a film material into a cylindrical shape and bonding a pair of edges. Moreover, many irrigation tubes for agriculture reach several hundred meters to several kilometers in length, and high-pressure water is supplied to the irrigation tubes. When high-pressure water is supplied to the irrigation tube in this way, it is possible that the bonded portion of the irrigation tube is broken.

Japanese Patent Publication No. 60-29306

  The present invention has been made in consideration of such points, and an object thereof is to provide an irrigation tube that can be easily operated without breaking even when high-pressure water is supplied.

  The present invention includes a main pipe having a liquid transfer path, a communication hole provided on the outer periphery of the main pipe and provided between the liquid transfer path, a water supply hole directed outward, and a communication hole and a water supply hole. A branch pipe having a water supply channel to be connected, and by assembling the film material into a cylindrical shape and sealing a pair of end edges, a cylinder section serving as a main pipe and a seal section serving as a branch pipe are formed. The irrigation tube is characterized in that a reinforcing material for reinforcing the branch pipe is provided on any one of the above.

  The present invention is the irrigation tube, wherein the reinforcing material is provided immediately below the region corresponding to at least the branch pipe on the inner surface of the main pipe.

  The present invention is the irrigation tube, wherein the reinforcing material is provided outside the branch pipe.

  In the irrigation tube according to the present invention, the reinforcing member has a base body made of a liquid-impermeable material, and the base body is provided with a water passage hole.

  The present invention is the irrigation tube, wherein the reinforcing material has a base body made of a porous material.

  The present invention is the irrigation tube, wherein the reinforcing material has a reinforcing layer laminated on the base body.

  The present invention is the irrigation tube characterized in that an additional reinforcing material is provided on the reinforcing material.

  According to the present invention, since the reinforcing material that reinforces the branch pipe is provided in the branch pipe, even if high-pressure water is supplied into the liquid conveyance path of the main pipe, the pressure from the high-pressure water can be received by the reinforcing material. Therefore, the branch pipe is not peeled off or broken by the high pressure water.

FIG. 1 is an external perspective view of an irrigation tube according to an embodiment of the present invention. Fig.2 (a) is sectional drawing in the water supply path position of an irrigation tube, FIG.2 (b) is sectional drawing in the water supply path of an irrigation tube. Fig.3 (a) is a side view of an irrigation tube, FIG.3 (b) is a top view of a reinforcing material. Fig.4 (a) is a side view which shows the modification of an irrigation tube, FIG.4 (b) is a top view of a reinforcing material. Fig.5 (a) is a side view which shows the modification of an irrigation tube, FIG.5 (b) is a top view of a reinforcing material. 6 (a) and 6 (b) are diagrams showing the layer structure of the reinforcing material. FIGS. 7A and 7B are side views showing a modification of the irrigation tube. 8A and 8B are side views showing a modification of the irrigation tube. FIGS. 9A and 9B are side views showing a modification of the irrigation tube. Fig.10 (a) is a side view which shows the modification of an irrigation tube, FIG.10 (b) is a top view of a reinforcing material. 11 (a), 11 (b), and 11 (c) are diagrams showing a method for manufacturing an irrigation tube. 12 (a) and 12 (b) are diagrams illustrating a method for shaping a water supply channel. FIGS. 13A and 13B are external perspective views showing modifications of the irrigation tube.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is an external perspective view of an irrigation tube according to an embodiment of the present invention, FIG. 2 (a) is a cross-sectional view of the irrigation tube at a water supply channel position, and FIG. 2 (b) is a water supply channel and water supply of the irrigation tube. It is sectional drawing between roads. Moreover, Fig.3 (a) is a side view of an irrigation tube, FIG.3 (b) is a top view which shows a reinforcing material.

  As shown in FIGS. 1 to 3A and 3B, the irrigation tube 10 </ b> A is provided on the outer circumference of the main pipe 10 having the liquid transfer path 11 and the liquid transfer path 11. And a branch pipe 20 having a plurality of water supply holes 22 heading outward.

  In addition, one water supply hole 22 among the plurality of water supply holes 22 provided in the branch pipe 10 is connected to each other by a corresponding one communication hole 21 and a water supply path 23. Here, the communication hole 21 and the water supply channel 23 are indicated by broken lines in FIG.

  Such an irrigation tube 10A is obtained by assembling the film material 40 into a cylindrical shape and sealing the pair of end edges 41, 41 to form a cylindrical portion 42 and a seal portion 43 (FIG. 11A). b) (c)). In this case, the cylindrical part 42 becomes the main pipe 10 of the irrigation tube 10 </ b> A, and the seal part 43 becomes the branch pipe 20. In addition, as a cross-sectional shape of the main pipe 10, a rectangle, a polygon, an ellipse, etc. can be mentioned besides the circle as shown in FIG.

  Further, a reinforcing member 30 is provided to reinforce the branch pipe 20 made of a seal portion. The reinforcing material 30 is made of a synthetic resin film plate (base material body) disposed immediately below the region corresponding to the branch pipe 20 on the inner surface of the main pipe 10. The reinforcing material 30 is bonded and fixed to the inner surface of the main pipe 10. Yes. The reinforcing member 30 extends over the entire length of the main pipe 10.

  In this case, a space 30 </ b> A is formed between the reinforcing member 30 and the branch pipe 20, and a water passage hole 31 is provided in the reinforcing member 30 to communicate the liquid conveyance path 11 of the main pipe 10 and the space 30 </ b> A. The space 30 </ b> A communicates with the water supply hole 22 through the communication hole 21 and the water supply path 23 of the branch pipe 20.

  Next, the configuration of the reinforcing member 30 will be described. As described above, the reinforcing material 30 is made of a liquid-impermeable synthetic resin, for example, a film made of polyethylene (PE), unstretched polypropylene (CPP), biaxially stretched nylon (ON), or polyester (PET). It consists of a board | plate material, and the water-permeable hole 31 is provided in the reinforcing material 30 (refer Fig.3 (a) (b)). In this case, the reinforcing member 30 is made of an elongated plate material, and a plurality of water passage holes 31 are provided along the longitudinal direction of the reinforcing member 30, and the water passage holes 31 are formed in the water supply passage 23 and the communication hole 21 of the branch pipe 20. It is provided at a corresponding position, that is, directly below the communication hole 21. Further, the water passage hole 31 is disposed at a substantially central position in the width direction of the reinforcing member 30.

  As described above, the reinforcing member 30 is made of a liquid-impervious synthetic resin film plate (base material body), and the reinforcing member 30 is provided with the water passage holes 31. You may comprise 30 from the nonwoven fabric base material main body of a porous material. By constituting the reinforcing member 30 from a non-woven fabric base body made of a porous material, a function as a foreign matter removing filter can be imparted while a function of reinforcing the branch pipe 20 is expressed. In the case where the reinforcing material 30 is configured from a nonwoven fabric base body, the water passage holes 31 are not necessarily provided. Further, the reinforcing material 30 may be a net-like material as long as the tensile strength and the adhesive force to the film material can be secured.

  Furthermore, the reinforcing material 30 may be composed of a liquid-impervious synthetic resin base body 30a and a reinforcing layer 30b laminated on the base body 30a. In this case, the reinforcing layer 30b is made of biaxially stretched nylon or the like, and improves the puncture strength, tensile strength, and pressure resistance strength of the reinforcing material 30 (see FIG. 6A).

  As shown in FIG. 6 (a), water holes 31, 31 are formed in the synthetic resin base body 30a and the reinforcing layer 30b of the reinforcing member 30, respectively. The water passage holes 31 of the reinforcing layer 30b communicate with each other.

  Alternatively, the reinforcing material 30 may be composed of a non-woven fabric substrate body 30c made of a porous material and a reinforcing layer 30b made of biaxially stretched nylon or the like, and the water passage holes 31 may be provided only in the reinforcing layer 30b (FIG. 6). (See (b)).

  Thus, by arranging the reinforcing material 30 immediately below the region corresponding to the branch pipe 20 on the inner surface of the main pipe 10, even when high-pressure water is supplied into the liquid transport path 11 of the main pipe 10 by the reinforcing material 30, Of the irrigation tube 10 </ b> A, the branch pipe 20 that is made of the seal portion 43 and is relatively easy to peel does not peel off or break, and the branch pipe 20 can be reinforced. This reduces the frequency of replacement of the irrigation tube of the present invention, leading to resource saving.

  That is, the reinforcing member 30 is made of a firm film plate as described above, and is bonded and fixed to the inner surface of the main pipe 10. For this reason, when pressure is applied to the branch pipe 20 from the high-pressure water supplied into the liquid conveyance path 11 of the main pipe 10, the force to try to peel off the branch pipe 20 is received by the reinforcing material 30, thereby peeling off the branch pipe 20. Alternatively, breakage can be prevented in advance.

  1 to 3, a liquid such as water for irrigation or a nutrient solution in which water and fertilizer are mixed flows in the liquid conveyance path 11 of the main pipe 10. Hereinafter, in this Embodiment, the liquid conveyance path 11 of the main pipe 10 demonstrates as what conveys water.

  As described above, a plurality of the communication holes 21 and the water supply holes 22 of the branch pipe 20 are provided at a predetermined interval. The water flowing through the liquid conveyance path 11 of the main pipe 10 reaches the space 30A through the water passage hole 31 of the reinforcing material 30 or the reinforcing material 30 itself when the reinforcing material 30 is a non-woven fabric. Next, the water in the space 30 </ b> A is discharged to the outside through the communication hole 21, the water supply channel 23, and the water supply hole 22. The water discharged from the water supply hole 22 is given to the crop.

  In addition, as described above, since the reinforcing member 30 is disposed immediately below the region corresponding to the branch pipe 20 on the inner surface of the main pipe 10, even when high-pressure water is supplied into the liquid transport path 11 of the main pipe 10, The force to peel off the branch pipe 20 applied from the high-pressure water can be received by the reinforcing material 30, and the branch pipe 20 can be prevented from peeling or breaking.

  Next, the manufacturing method of the irrigation tube which concerns on this embodiment is demonstrated with FIG. 11 (a) (b) (c) and FIG. The irrigation tube 10A is composed of a single film material 40 as shown in FIG. 11A. The flat film material 40 is assembled into a cylindrical shape as shown in FIG. The inner surfaces of the two are melt bonded with a heater from the outside of the film material (hereinafter also referred to as “heat seal”). In this case, the cylindrical part 42 of the film material 40 assembled in a cylindrical shape becomes the main pipe 10, and the seal part 43 to which the film material 40 is bonded (glued together) becomes the branch pipe 20. For example, in FIG.11 (c), the outer periphery of the cylindrical part 42 is about 6 cm, and the width | variety of the seal part 43 is about 1-2 cm. In this case, one end edge of the reinforcing material 30 is bonded and fixed to the flat film material 40 in advance, and the other end edge of the reinforcing material is bonded and fixed to the film material after the film material 40 is assembled into a cylindrical shape.

  When the film material 40 is heat sealed, the portion that becomes the water supply channel 23 is not heated. Thereby, the non-adhesion part of the film material 40 becomes the communication hole 21, the water supply hole 22, and the water supply path 23.

  As the film material 40, for example, a polyethylene (PE) film or an unstretched polypropylene (CPP) film can be used. Moreover, you may comprise the film material 40 from the multilayer film which further has a biaxially-stretched nylon (ON) film etc. Thereby, the piercing strength, tensile strength, and pressure resistance of the irrigation tube 10A can be improved.

  In addition, in the formation method of the water supply path 23 as mentioned above, it will be in a blocking state with the films of a non-adhesion part overlapping, and water may become difficult to flow. Therefore, it is preferable to shape the water supply channel 23 to prevent the occurrence of blocking.

  For example, the water supply path 23 can be shaped by preparing a mold that has been processed into the shape of the water supply path 23 in advance, sandwiching the mold and heat-sealing the film material 40, and then removing the mold.

  Moreover, as shown to Fig.12 (a), the part corresponding to the water supply path 23 has a part corresponding to the water supply path 23 as shown in FIG. A pair of molds recessed in a triangular shape is prepared, and the film material 40 is pressed and heated with the mold, and the film material 40 is pulled apart by vacuuming without heating the recesses of the mold. However, the water supply channel 23 can be shaped. By such shaping, the convex part (or concave part) of the film material 40 having a convex part (or concave part) on the surface becomes a non-adhesive part, and the communication hole 21, the water supply hole 22, and A water supply channel 23 is formed. The shaping may be performed only for a part of the water supply channel 23.

  In this way, the main pipe 10, the water supply hole 22, the communication hole 21, and the branch pipe 20 having the water supply hole 22 and the water supply path 23 connected to the communication hole 21 are provided, and correspond to the branch pipe 20 on the inner surface of the main pipe 10. The irrigation tube 10A in which the reinforcing material 30 is provided immediately below the area to be manufactured can be manufactured.

Modifications of the Present Invention Modifications of the present invention will be described below. In the following modification of the present invention, the same parts as those in the embodiment shown in FIG. 1 to FIG. 3A and FIG.

  In the embodiment shown in FIG. 1 to FIG. 3A and FIG. 3B, the water passage holes 31 of the reinforcing member 30 correspond to the communication holes 21 and the water supply passages 23 of the branch pipe 20 in the longitudinal direction of the reinforcing member 30. That is, although the example provided just under the communicating hole 21 was shown, it is not restricted to this, The water communicating hole 31 of the reinforcing material 30 is shifted along the longitudinal direction of the reinforcing material 30 with respect to the communicating hole 21 of the branch pipe 20. You may arrange | position (FIG. 4 (a) (b)). 4A is a side view showing the irrigation tube 10A, and FIG. 4B is a plan view showing the reinforcing member 30. FIG.

  4 (a) and 4 (b), water flowing in the liquid conveyance path 11 of the main pipe 10 flows into the space 30A from the water passage hole 31 of the reinforcing member 30, but the water hole 31 of the reinforcing member 30 is connected to the communication hole. 21, the water in the space 30A can be prevented from immediately flowing from the communication hole 21 toward the water supply passage 23 and the water supply hole 22 because the displacement is in the longitudinal direction of the reinforcing member 30. A certain pressure reduction effect can be given to the water flowing toward the communication hole 21, the water supply passage 23 and the water supply hole 22.

  In the embodiment shown in FIG. 1 to FIG. 3A and FIG. 3B, the water passage holes 31 of the reinforcing member 30 correspond to the communication holes 21 and the water supply passages 23 of the branch pipe 20 in the longitudinal direction of the reinforcing member 30. That is, although the example provided just under the communicating hole 21 was shown, it is not restricted to this, The water communicating hole 31 of the reinforcing material 30 is shifted along the longitudinal direction of the reinforcing material 30 with respect to the communicating hole 21 of the branch pipe 20. While arrange | positioning, you may arrange | position the water flow hole 31 to the side of the centerline 30B of the reinforcing material 30 (FIG. 5 (a) (b)). 5A is a side view showing the irrigation tube 10A, and FIG. 5B is a plan view showing the reinforcing member 30. FIG.

  5 (a) and 5 (b), the water flowing in the liquid conveyance path 11 of the main pipe 10 flows into the space 30A from the water passage hole 31 of the reinforcing member 30, but the water hole 31 of the reinforcing member 30 is connected to the communication hole. 21 is displaced along the longitudinal direction of the reinforcing member 30 with respect to 21 and is disposed on the side of the center line 30B of the reinforcing member 30, so that the water in the space 30A is immediately supplied from the communication hole 21 to the water supply channel 23. In addition, it is possible to prevent the water from flowing toward the water supply hole 22, and a certain pressure reducing effect can be given to the water flowing from the space 30 </ b> A toward the communication hole 21, the water supply path 23, and the water supply hole 22.

  Further, in the embodiment shown in FIGS. 1 to 3A and 3B, the example in which the reinforcing material 30 is provided immediately below the region corresponding to the branch pipe 20 on the inner surface of the main pipe 10 is shown. The reinforcing material 30 may be bonded and fixed on the outside of the branch pipe 20 (see FIGS. 7A and 7B). Further, the reinforcing material 30 may be provided directly below the region corresponding to the branch pipe 20 on the inner surface of the main pipe 10, and the reinforcing material 30 may be further provided outside the branch pipe 20 so as to cover the branch pipe 20.

  7A is a cross-sectional view of the irrigation tube 10A at the position of the water supply passage 23, and FIG. 7B is a cross-sectional view of the irrigation tube 10A between the water supply passage 23 and the water supply passage 23.

  As shown in FIG. 7A, the reinforcing member 30 is provided with a water passage hole 31 at a position corresponding to the water supply hole 22 of the branch pipe 20. The reinforcing material 30 can prevent the branch pipe 20 from peeling or breaking. In addition, when pressure is applied to the branch pipe 20 from the high-pressure water supplied into the liquid conveyance path 11 of the main pipe 10, the seal portion 43 that forms the branch pipe 20 is thin, and therefore, the seal portion 43 is broken. However, by providing the reinforcing member 30 on the outside of the branch pipe 20 so as to cover the branch pipe 20, the strength against breakage of the seal portion can be improved.

  In FIG. 7A, when the reinforcing member 30 is made of a nonwoven fabric made of a porous material, the water passage holes 31 are not necessarily provided.

  Further, in the embodiment shown in FIGS. 1 to 3A and 3B, the example in which the reinforcing material 30 is provided immediately below the region corresponding to the branch pipe 20 on the inner surface of the main pipe 10 is shown. A reinforcing member 30 may be provided outside the tube so as to cover the branch pipe 20 (see FIGS. 8A and 8B).

  8A is a cross-sectional view of the irrigation tube 10A at the position of the water supply path 23, and FIG. 8B is a cross-sectional view of the irrigation tube 10A between the water supply path 23 and the water supply path 23.

  As shown in FIG. 8A, the reinforcing member 30 is loosely bonded and fixed to the outside of the branch pipe 20 so as to form a space 30D therein, and water in the space 30D is discharged to the reinforcing member 30 outward. A water passage hole 31 is provided.

  In the embodiment shown in FIGS. 7A and 7B, when the branch pipe 20 is torn, the high-pressure water supplied into the liquid conveyance path 11 of the main pipe 10 with respect to the reinforcing material 30 covering the broken portion. The pressure from will be concentrated. On the other hand, according to the embodiment shown in FIGS. 8 (a) and 8 (b), even if the branch pipe 20 is torn, the liquid leaking from the torn portion is the periphery around the torn portion. Thus, the pressure of the high-pressure water supplied into the liquid transport path 11 of the main pipe 10 can be prevented from being concentrated and applied to the reinforcing material 30 covering the broken portion.

  In FIG. 8A, in the case where the reinforcing member 30 is made of a nonwoven fabric made of a porous material, the water passage holes 31 are not necessarily provided.

  Further, in the embodiment shown in FIGS. 1 to 3A and 3B, the example in which the reinforcing material 30 is provided immediately below the region corresponding to the branch pipe 20 on the inner surface of the main pipe 10 is shown, but the present invention is not limited thereto. The reinforcing material 30 may be provided immediately below the region corresponding to the branch pipe 20 on the inner surface, and the additional reinforcing material 33 may be provided on the reinforcing material 30 (FIGS. 9A and 9B). 9A is a cross-sectional view of the irrigation tube 10A at the position of the water supply passage 23, and FIG. 9B is a cross-sectional view of the irrigation tube 10A between the water supply passage 23 and the water supply passage 23.

  As shown in FIGS. 9A and 9B, an additional reinforcing material 33 is further provided on the reinforcing material 30, and both ends of the additional reinforcing material 33 are bonded and fixed to the inner surface of the main pipe 10.

  9A and 9B, the reinforcing material 30 is made of a liquid-impermeable material having a water passage hole 31, and the additional reinforcing material 33 is made of a nonwoven fabric made of a porous material. As a result, even when high-pressure water is supplied into the liquid conveyance path 11 of the main pipe 10, the force to peel off the branch pipe 20 applied from the high-pressure water is received by the reinforcing material 30 and the additional reinforcing material 33. The strength can be further improved against peeling or breaking of the branch pipe 20. In addition, even if the reinforcing material 30 made of the liquid impervious material having the water passage holes 31 is damaged, the additional reinforcing material 33 made of a nonwoven material of the porous material is connected to the liquid conveyance path 11 and the space 30A of the main pipe 10. And the function of reinforcing the branch pipe 20 can be expressed.

  7A, 7B, and 8A, 8B, the reinforcing material 30 is provided outside the branch pipe 20, and the additional reinforcing material 33 is further provided on the reinforcing material 30. Good. As a result, even when high-pressure water is supplied into the liquid conveyance path 11 of the main pipe 10, the force to peel off the branch pipe 20 applied from the high-pressure water is received by the reinforcing material 30 and the additional reinforcing material 33. The strength can be further improved against peeling or breaking of the branch pipe 20.

  Further, in the embodiment shown in FIGS. 1 to 3A and 3B, an example is shown in which a reinforcing member 30 extending over the entire length of the main pipe 10 is provided immediately below a region corresponding to the branch pipe 20 on the inner surface of the main pipe 10. However, the present invention is not limited thereto, and a large number of reinforcing members 30 may be provided intermittently only in the vicinity of the communication hole 21 of the branch pipe 20 (see FIGS. 10A and 10B). As a result, the weight of the irrigation tube of the present invention can be reduced and the cost can be reduced.

  10A is a side view of the irrigation tube 10A, and FIG. 10B is a plan view showing the reinforcing member 30. FIG.

  As shown in FIGS. 10A and 10B, each reinforcing member 30 has a parallelogram shape on a plane, and is bonded and fixed to the inner surface of the main pipe 10 in the vicinity of the communication hole 21.

  Moreover, as shown to Fig.13 (a), you may make it the structure which provides the sharp projection part 60 between the water supply holes 22 of the branch pipe 20 (water supply hole 22 vicinity). The sharp protrusions 60 can be formed, for example, by providing triangular protrusions on a pair of edges of a single film material, and overlapping and bonding the pair of protrusions during heat sealing.

  As shown in FIG. 13 (b), a gap is formed between the water supply hole 22 and the ground by laying such an irrigation tube by piercing the ground with the sharp projection 60. Thereby, it can prevent that the foreign material contained in soil is attracted | sucked from the water supply hole 22, and clogging generation | occurrence | production in the water supply path 23 of the branch pipe 20 can be prevented. Further, it is possible to irrigate a desired region below the water supply hole 22.

  In addition, if the projection part provided in the water supply hole 22 vicinity can provide a space | gap between the water supply hole 22 and the ground when the irrigation tube is laid, the shape is not limited to a sharp shape.

Next, materials of the main pipe 10 and the branch pipe 20 constituting the irrigation tube 10A will be described. As described above, the irrigation tube 10A including the main pipe 10 and the branch pipe 20 is composed of a film material 40 made of PE or CPP, or a multilayer film material 40 of these PE, CPP, and ON. It may have the following characteristics.

  One of the causes of clogging in the water supply channel 23 of the branch pipe 20 of the irrigation tube 10A is the propagation of microorganisms, algae, and the like. Therefore, in order to suppress the growth of microorganisms and algae, it is preferable that at least a part of the irrigation tube has a light-shielding property.

  For example, the material of the main pipe 10 and the branch pipe 20 of the irrigation tube 10A is colored with black, carbon black is added to the film material 40 forming the irrigation tube 10A, or water is irrigated with a multilayer film including a light-shielding film to which carbon black is added. By forming the tube 10A, an irrigation tube having a light shielding property is obtained.

  It is desirable that the material of the main pipe 10 and the branch pipe 20 of the irrigation tube 10A has a light shielding rate of 30% or more, which is the same as that of a cold chill used for light shielding / frostproof / windproof purposes, and the same light shielding as a black mulch used for grassproof purposes. It is more desirable to have a rate of 90% or more. It is further desirable that the material of the main pipe 10 and the branch pipe 20 of the irrigation tube 10A has a light shielding rate of 99.99% or more similar to that of a black mulch or a light shielding curtain used for the purpose of high performance grass prevention or dark place design.

  A filter for removing particles and the like may be provided in the communication hole 21 of the branch pipe 20. The water supply path 23 of the branch pipe 20 has a smaller inner diameter than the liquid transport path 11 of the main pipe 10 and is likely to be clogged. By providing the filter, foreign matter can be prevented from entering the water supply passage 23 and clogging can be prevented. As the filter, for example, a foam or cloth (including non-woven fabric) can be used.

  Further, the inner surface (the liquid transport path 11 and the water supply path 23) of the main pipe 10 and the branch pipe 20 of the irrigation tube 10A may be subjected to water repellency treatment, oil repellency treatment, or hydrophilic treatment. Thereby, adhesion of dirt can be prevented (dirt resistance) and clogging can be prevented.

  For example, by performing water repellent treatment, moisture can be repelled, and adhesion of foreign substances accompanying moisture can be prevented. As the super water-repellent treatment, a saturated fluoroalkyl group, alkylsilyl group, fluorosilyl group, long-chain alkyl group, or the like can be used.

  Further, by performing the oil repellent treatment, the oil can be repelled, and the adhesion of foreign matters accompanying the oil can be prevented. As the oil repellent treatment, a fluororesin or the like can be used.

  Moreover, it can prevent that the foreign material accompanying a moisture dries and precipitates by performing a hydrophilic process. As the hydrophilic treatment, titanium oxide or the like can be used.

  Such an irrigation tube can be obtained, for example, by applying the above-described antifouling treatment to one surface of a film material as a material of the irrigation tube in advance and assembling the irrigation tube with this surface inside.

  The antifouling treatment may be applied not only to the inner surface of the irrigation tube but also to the outer surface. For example, by performing hydrophilic treatment on the outer surface of the tube, generation of mold can be prevented, and mold can be prevented from entering the tube.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

10A Irrigation tube 10 Main pipe 11 Liquid conveyance path 20 Branch pipe 21 Communication hole 22 Water supply hole 23 Water supply path 30 Reinforcement material 30A Space 30B Center line 30D Space 30a Base material main body 30b Reinforcement layer 30c Base material main body 31 Water flow hole 40 Film material 42 Cylinder Part 43 Seal part

Claims (7)

A main pipe having a liquid conveyance path;
A branch pipe provided on the outer periphery of the main pipe and having a communication hole provided between the liquid conveyance path, an outward water supply hole, and a water supply path connecting the communication hole and the water supply hole;
With
By assembling the film material into a cylindrical shape and sealing a pair of edges, a cylindrical portion that becomes a main pipe and a seal portion that becomes a branch pipe are formed,
An irrigation tube, wherein a reinforcing material for reinforcing the branch pipe is provided on at least one of the main pipe and the branch pipe.   2. The irrigation tube according to claim 1, wherein the reinforcing material is provided immediately below a region corresponding to at least the branch pipe on the inner surface of the main pipe.   The irrigation tube according to claim 1 or 2, wherein the reinforcing material is provided outside the branch pipe.   The irrigation tube according to any one of claims 1 to 3, wherein the reinforcing member has a base body made of a liquid-impermeable material, and the base body is provided with a water passage hole.   The irrigation tube according to any one of claims 1 to 3, wherein the reinforcing member has a base body made of a porous material.   6. The irrigation tube according to claim 4, wherein the reinforcing member has a reinforcing layer laminated on the base body.   The irrigation tube according to claim 1, wherein an additional reinforcing material is provided on the reinforcing material.

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