JP2020005576A - Thermal insulation net - Google Patents

Abstract

An object of the present invention is to achieve both heat shielding properties and daylighting properties, and to improve handleability.
A net flat body is provided with a functional flat yarn capable of shielding heat. The net main body 12 is configured to be woven and knitted in a sheet shape by the monofilaments 14, and has a structure having air permeability and water permeability in the front and back directions, and exposes the front and back surfaces of the functional flat yarn to a portion including the functional flat yarn. The weaving portion 15 is formed. A plurality of weaving portions 15 are arranged in parallel with a gap portion 16 interposed therebetween. As the functional flat yarn, a heat-shielding tape 13 having translucency as a whole is used.
[Selection diagram] Fig. 1

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a net having a heat shielding function, and more particularly to a heat shielding net that suppresses a rise in internal temperature while taking in sunlight in cultivation of agricultural products.

  As an agricultural net having a heat shielding function, for example, there is one disclosed in Patent Document 1 below. This agricultural net has a light-shielding portion corresponding to a covering surface corresponding to an upper portion of a crop when formed as a tunnel, and a coarse knitting portion corresponding to a covering surface corresponding to a side portion of the crop.

  In the light-shielding part located above the crop, flat yarns made of a white light-shielding polyolefin film and flat yarns made of a milky white translucent polyolefin-based film are inserted alternately adjacent to each other so that rainwater is not dropped. It is configured. The coarsely knitted portion located below the side portion of the crop is knitted in a net shape that prevents invasion of pests and has excellent air permeability.

  The heat shielding property of this agricultural net is obtained by blocking the sunlight with white flat yarn. Although the milky white flat yarn has translucency, but has a portion that blocks sunlight, the agricultural net of Patent Literature 1 has lower daylighting than the one that does not have a light-shielding portion.

  For this reason, there is a possibility that the growth of the crop may be adversely affected by inviting a captain and adjustment of the cultivation environment is troublesome. Further, the agricultural net disclosed in Patent Document 1 has a light-shielding portion and a coarse knitting portion and is exclusively used for a tunnel of a predetermined size, and cannot be used as, for example, an outer lining or a lining of a house and has low versatility. .

  Patent Literature 2 discloses an agricultural heat shield sheet in which a plastic narrow tape containing a specific pearl pigment is used for length and / or weft yarn and knitted and woven.

  This heat shielding sheet reflects sunlight with a pearl pigment, and performs heat shielding by shielding light as in Patent Document 1.

  Since the heat-shielding and light-transmitting properties are determined by the content of the pearl pigment, the content must be set appropriately at the stage of the material of the narrow tape, and multiple types of heat-shielding sheets with different degrees of heat-shielding are manufactured. It is not easy. Further, since the narrow tape having a pearl pigment constitutes a warp yarn or a weft yarn, the narrow tape itself receives a load such as tension. For this reason, there is a possibility that it may be partially stretched or misaligned during use, there is insufficient strength, and it is unsuitable for use as a house lining or lining.

  Patent Literature 3 discloses a heat shield net having both heat shield properties and daylighting properties.

  This heat shield net has a mesh structure formed by heat-sealing intersections of warps and wefts by crossing flat yarns vertically and horizontally, one surface of the mesh structure is coated with a metal film, and the other is covered with a metal film. The configuration is such that the surface is white. The metal film reflects the sunlight to block the heat, and the white color ensures brightness.

  However, the heat shielding net of Patent Literature 3 also has a structure in which light is shielded to block heat, similarly to those of Patent Literatures 1 and 2. In the heat shielding net of Patent Literature 3, the size of the mesh structure is large. Must be set appropriately. That is, if the eyes are large, the light-shielding property is reduced, and a sufficient heat-shielding effect cannot be obtained.

Registered Utility Model No. 3186590 Japanese Patent No. 3268738 JP 2015-53926 A

  A main object of the present invention is to make it possible to easily achieve both heat shielding properties and daylighting properties.

  Means for that is a heat shield net provided with a functional flat yarn capable of heat shield, wherein the functional flat yarn is a heat shield net composed of a heat shield tape having a light transmitting property as a whole. .

  In this configuration, the heat-shielding tape allows visible light to pass through the entire surface, and the portion that blocks the visible light is eliminated or reduced as much as possible, so that the light-shielding property is ensured while shielding the heat. The heat-shielding rate of the heat-shielding net can be set according to the number and arrangement of the heat-insulating tapes, the ratio with other materials such as monofilaments and tape yarns, and the like.

  According to the present invention, since the heat-shielding tape has a light-transmitting property as a whole, it is easy to achieve both heat-shielding properties and daylighting properties. In addition, since the heat shield rate can be changed depending on the number and arrangement of the heat shield tapes, various types of heat shield nets having different heat shield performances and modes can be easily obtained.

The surface view of a heat shielding net. FIG. 2 is a partially enlarged schematic view of the heat shield net of FIG. 1. FIG. 3 is a schematic diagram showing an operation state. The surface view of the heat shielding net concerning other examples. The surface view of the heat shielding net concerning other examples. FIG. 7 is a partially enlarged schematic view of a heat shield net according to another example. FIG. 7 is a partially enlarged schematic view of a heat shield net according to another example. FIG. 6 is a partially enlarged view of a heat shield net according to another example. FIG. 6 is a partially enlarged view of a heat shield net according to another example. FIG. 6 is a partially enlarged view of a heat shield net according to another example. FIG. 6 is a partially enlarged view of a heat shield net according to another example. FIG. 6 is a partially enlarged view of a heat shield net according to another example. FIG. 6 is a partially enlarged view of a heat shield net according to another example.

  One embodiment for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 shows a front view of the heat shield net 11. This drawing shows a part of the heat shield net 11, and the top, bottom, left and right of the drawing are omitted. The heat shield net 11 is formed in a long shape with an appropriate width, is long in the vertical direction in the drawing, and is used after being cut to a required length.

  The heat shield net 11 is provided with a heat shield tape 13 as a functional flat yarn capable of shielding heat from the net main body 12.

  The net body 12 is woven and knitted in a sheet shape by the monofilaments 14, and has air permeability and water permeability in the front and back directions. That is, the net main body 12 has an appropriate weaving structure or knitting structure, penetrates in the front-back direction, and has solely a predetermined strength against tension or the like. In other words, the heat shield tape 13 is provided as an accessory to the net main body 12 and does not contribute to the strength of the net main body 12.

  The net main body 12 has a weaving portion 15 for providing the heat shielding tape 13. The weaving portion 15 is configured as a part of a weaving structure or a knitting structure, and has a structure that exposes both front and back surfaces of the heat shielding tape 13. More specifically, the monofilaments 14 constituting the net main body 12 are formed in a loop shape, a bag shape or a pocket shape on the front and back sides, and the heat shielding tape 13 is woven therein.

  Such a weaving portion 15 has a shape extending in the longitudinal direction of the net main body 12, and is provided in plural numbers along the width direction. In the example shown in FIG. 1, the weaving portions 15 arranged in parallel are formed one by one at appropriate intervals in the width direction of the net main body 12. A gap 16 is provided between the weaving portions 15.

  FIG. 2 is an enlarged view schematically showing a part of FIG. 1. The net main body 12 is formed of a Russell knit, and this portion is formed into a loop-like cross section between chain knitting portions 12a extending in the vertical direction. A weft portion 12b extending in the lateral direction is formed as much as possible. The weft portion 12b exists so as to sandwich the heat shield tape 13 from the front side and the back side. In other words, the heat shield tape 13 is held in a state where the weft yarn portions 12b in the weaving portion 15 are sorted on the front and back.

  The monofilament 14 constituting the net main body 12 is entirely made of a light-transmitting material and is transparent. As described above, the weaving portion 15 has the weft portion 12b sandwiching the heat shield tape 13 from the front side or the back side. However, since the monofilaments 14 forming the weft portion 12b are transparent, the entire heat shield tape 13 is It is the same state as being exposed.

  The heat shield tape 13 has translucency as a whole. Specifically, the heat-shielding tape 13 is transparent in its entirety, but has a function of transmitting visible light to obtain light-collecting properties and shielding light. It is preferable that visible light is transmitted as much as possible to obtain a good light-collecting property. As such a heat-shielding tape 13, one that suppresses transmission of infrared rays among sunlight can be adopted. More specifically, an agricultural film “PO Cool” manufactured by Okamoto Corporation is preferably used as the heat shielding tape 13. That is, the film is cut into a tape having an appropriate width and used as the heat shielding tape 13.

  The width of the heat-shielding tape 13 is appropriately set, but is preferably in a range of, for example, about 5 mm to about 10 mm. If the width is too narrow or too wide, the handleability is poor, and if the width is too narrow, there is a high possibility that the heat-shielding tape 13 is twisted and cannot exhibit a desired function.

  The heat shield tape 13 is woven into the weaving portion 15 formed when the net main body 12 is woven and knitted.

  The heat shielding net 11 configured as described above is used, for example, as a covering material for a house lining or a curtain lining a house, and as schematically shown in FIG. In the above, the transmission of infrared rays of sunlight is suppressed. This suppresses an increase in temperature due to heating of the ground G on which the plant P is rooted.

  The net body 12 is woven and knitted in a sheet shape, has strength as a net, and holds the heat shielding tape 13. The heat shielding tape 13 of the weaving part 15 of the net main body 12 transmits visible light as a whole, like the gap part 16 between the weaving parts 15 (between the heat shielding tapes 13). Since the monofilament 14 constituting the net main body 12 is transparent, there is no portion that blocks visible light. In addition, the entire heat shield net 11 has air permeability and water permeability in the front and back directions. In particular, the gap 16 between the weaving portions 15 (between the heat shielding tapes 13) has nothing to block, and therefore has good air permeability and water permeability, that is, good air and moisture circulation.

  The net main body 12 is a sheet made of a monofilament 14, and holds the heat shield tape 13 while exhibiting strength as a net alone. For this reason, it is easy to handle, and can sufficiently withstand the use even if tension is applied to the outside of the house as described above. Since it has the strength as a knitted fabric, it is more convenient and durable than when a film as a material of the heat shield tape 13 is used for lining a house. Since strength and durability can be obtained, it can be used for various purposes such as tunnel cultivation and protection nets at construction sites, and is highly versatile.

  The heat shielding tape 13 woven into the net main body 12 is entirely transparent to visible light, and the net main body 12 is made of a transparent monofilament 14, so that there is nothing to block visible light, and good lighting properties can be obtained. Nevertheless, the heat-shielding tape 13 suppresses the transmission of infrared rays to achieve heat-shielding, so that it is possible to achieve both lighting and heat-shielding properties. The cultivation environment can be easily adjusted because the daylighting property is not sacrificed even if the heat shielding property is increased.

  Since the heat shield net 11 has a structure in which the heat shield tape 13 is provided on the net main body 12, the heat shield rate of the heat shield net 11 can be set by the number, width, arrangement, and the like of the heat shield tape 13. For this reason, various types of heat shielding nets 11, such as obtaining a heat shielding net 11 having different heat shielding performance, and obtaining a heat shielding net 11 in a heat shielding mode such as providing a portion having different heat shielding properties in a width direction of the heat shielding net 11, are provided. The heat shield net 11 can be easily obtained.

  Examples of the heat shield nets 11 having different heat shield performances are shown in FIGS. The heat shield net 11 shown in FIG. 4 is an example in which two weaving portions 15 are arranged at intervals. In other words, if the heat insulating tapes 13 are arranged two by two at intervals, and if the performance of the heat insulating tapes 13 is the same, the heat insulating property is higher than that of the heat insulating net 11 of FIG. The heat shield net 11 shown in FIG. 5 is an example in which the weaving portions 15 are arranged without any gap. That is, the heat-shielding tape 13 is disposed close to the heat-shielding tape 13 and has higher heat-shielding properties than the heat-shielding net 11 of FIG. Even though the heat shielding property is high, since the net body 12 has air permeability and water permeability, the circulation of air and moisture can be secured.

  Since the net main body 12 of the heat shield net 11 is made of Russell knit as described above, there is no misalignment, and even when cut to a required length, the net main body 12 has good handleability. The net main body 12 can be configured by a weaving method as shown in FIGS.

  FIG. 6 shows an example of a leno weave. That is, the woven portion 15 is formed between the warp groups 12d formed of the warp yarns 12c, and the heat shield tape 13 is woven into the weft yarn 12e along the warp yarns 12c. In this structure, there is no misalignment and the shape stability is good, so that a predetermined heat shielding rate can be stably obtained.

  FIG. 7 shows an example of a plain weave. In other words, in the structure composed of the warp yarns 12c and the weft yarns 12e, a portion where the warp yarn 12c is not woven over an appropriate width is provided, and the heat shielding tape 13 is woven as this woven portion 15 as a weaving portion 15.

As shown in these figures, the weaving unit 15 is constituted by an appropriate structure.
Further, the heat shield net 11 can be configured by omitting the net main body 12 as described above.
That is, as illustrated in FIGS. 8 to 13, the heat shield tape 13 alone or the heat shield tape 13 and the transparent flat yarn 17 (hereinafter, referred to as “transparent flat yarn”) may be used. . In this case, the heat shield tape 13 or the transparent flat yarn 17 may be woven as the warp 18 or the weft 19, and furthermore, the heat shield tapes 13 or the intersection of the heat shield tape 13 and the transparent flat yarn 17, that is, the warp It is preferable that the intersections of the wefts 18 and 18 are integrated by fusion.
Since only the heat shield tape 13 or the heat shield tape 13 and the transparent flat yarn 17 are used, the heat shield net 11 illustrated in FIGS. 8 to 13 is lightweight and easy to use.
8 to 13, the heat insulating tape 13 is shown with a lighter color in order to distinguish the heat insulating tape 13 that is entirely transparent and the transparent flat yarn 17 that is entirely transparent. . These figures show a part of the heat shield net 11, and the top, bottom, left and right of the drawings are omitted.
The heat shield net 11 shown in FIG. 8 is an example in which the heat shield tape 13 and the transparent flat yarn 17 are used for the warp 18, and the transparent flat yarn 17 is used for most of the weft 19. Some of the heat shield tapes 13a of the heat shield tapes 13 forming the warp 18 are wider than the other heat shield tapes 13b. The heat shielding tape 13 is woven into a part of the weft 19. The wefts 19 are all the same width. In addition, the joints formed by the warp yarns 18 and the weft yarns 19 are all the same.
The heat shield net 11 shown in FIG. 9 is different from the heat shield net 11 of FIG. 8 in that a plurality of wide heat shield tapes 13 a constituting the warp 18 are provided at regular intervals. The wefts 19 are all made of transparent flat yarns 17.
Since the width of the heat shield tape 13a is larger than that of the heat shield net 11 of FIG. 8, if the performance of the heat shield tape 13 is the same, the heat shield net 11 of FIG. The heat insulation rate is higher than that.
The heat shield net 11 shown in FIG. 10 is different from the heat shield net 11 of FIG. 9 in that a heat shield tape 13 is used for the weft 19 in addition to the transparent flat yarn 17. The heat shield tapes 13 are provided two by two with one transparent flat yarn 17 interposed therebetween. The thickness of the heat-shielding tape 13 and the transparent flat yarn 17 constituting the weft 19 are the same, and the meshes formed are all the same.
As described above, the heat shielding net 11 of FIG. 10 also has the heat shielding tape 13 on the weft 19, and the ratio of the heat shielding tape 13 is larger than that of the heat shielding net 11 of FIG. Are the same, the heat shield rate is higher than that of the heat shield net 11 of FIG.
In the heat shield net 11 shown in FIG. 11, the interval between the wide heat shield tapes 13a constituting the warp 18 is narrower than the heat shield net 11 of FIG. Further, the heat-insulating net 13 shown in FIG. 10 is different from the heat-insulating net 11 shown in FIG. Further, all the warp yarns 18 located between the wide heat insulating tapes 13a are the heat insulating tapes 13 and 13b, and the interval between the wide heat insulating tape 13a and the narrow heat insulating tape 13b is different. , The intervals are gradually changed.
In such a heat shielding net 11 of FIG. 11, the interval between the wide heat shielding tapes 13a is smaller than that of the heat shielding net 11 of FIG. In addition, since the eye is changed to provide a larger eye than the other eyes, a portion having better air permeability and water permeability can be provided.
The heat shield net 11 shown in FIG. 12 has the same configuration as the heat shield net 11 of FIG. However, all the wefts 19 are made of the transparent flat yarn 17.
In the heat shield net 11 shown in FIG. 13, all the warp yarns 18 and all the weft yarns 19 are formed by the heat shield tape 13.
When constituted only by the heat shield tape 13 as described above, the heat shield rate can be increased as much as possible.

DESCRIPTION OF SYMBOLS 11 ... Heat insulation net 12 ... Net main body 13 ... Heat insulation tape 14 ... Monofilament 15 ... Woven part 16 ... Gap part 17 ... Transparent flat yarn

Claims (9)

It is a heat shield net equipped with a functional flat yarn capable of heat shield,
A heat shield net in which the functional flat yarn is entirely formed of a heat shield tape having translucency. It is a heat shield net equipped with a functional flat yarn capable of heat shield,
The functional flat yarn is configured to be woven and knitted in a sheet shape by a monofilament, and provided on a net body having air permeability and water permeability in the front and back directions,
The portion provided with the functional flat yarn in the net main body is a weaving portion that exposes both front and back surfaces of the functional flat yarn,
A plurality of the woven parts are arranged in parallel,
A heat shield net in which the functional flat yarn is entirely formed of a heat shield tape having translucency. The heat shield net according to claim 1, wherein the heat shield tape is constituted by the heat shield tape alone or the heat shield tape and a transparent flat yarn. The heat shield net according to claim 3, wherein intersections of the heat shield tapes or intersections of the heat shield tape and the flat yarn are fused. 3. The heat shield net according to claim 2, wherein the net main body is formed of a translucent monofilament. The heat shield net according to claim 5, wherein the net main body is made of Russell knit or leno weave. The heat shield net according to any one of claims 1 to 6, wherein the heat shield tape suppresses transmission of infrared rays. The heat shielding net according to any one of claims 1 to 6, wherein the heat shielding tape transmits visible light to obtain daylighting properties and performs heat shielding. The heat shield net according to any one of claims 1 to 8, wherein the heat shield tapes are arranged at intervals.

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