JP2000262159A - Lining curtain of greenhouse for agriculture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject curtain which can efficiently be developed by reduced workers by integrally joining two upper and lower sheets having mutually different performances by a specific method. SOLUTION: This lining curtain of a greenhouse for agriculture is obtained by forming two upper and lower sheets 21, 22 in the quadrilateral forms having the same sizes, respectively, superposing the sheets 21, 22 and then integrally joining the adjacent sheets in the vertical direction. The upper and lower sheets 21, 22 comprise woven or knit fabric sheets and have mutually different performances. The woven or knit fabric sheets are preferably formed from shading materials, respectively. In a specific embodiment, the lining curtain may comprise a plain weave fabric sheet and a twill sheet. The plain weave fabric sheet is formed from tapes having a shading property and a light- absorbing property. The twill sheet is also formed by mixing and weaving tapes having a shading property and a light-reflecting property with tapes having a heat ray-reflecting property.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lining curtain composed of two sheets used for keeping heat and shading an agricultural house.

[0002]

2. Description of the Related Art In recent years, facility cultivation such as house cultivation, greenhouse cultivation, and tunnel cultivation has been actively carried out in order to increase the value of agricultural crops such as yearly harvest. In such house cultivation and the like, it may sometimes be necessary to shield the house or the like from sunlight. For example, in cultivation of chrysanthemum, poinsettia, strawberry, etc., a so-called pseudo cultivation method of cultivating by controlling the photoperiod response (mainly short-day treatment) is widely used,
Shading for short-day treatment in this cultivation method is usually carried out by a lining curtain in a house.

The performance required for the light-shielding lining curtain used in this shade cultivation method is to have a perfect light-shielding rate close to 100%. Having moisture permeability, air permeability, and water permeability. The temperature rise in the house (especially in the coating system covered by the curtain) should be small. And the like. JP-A-9-26 filed by the present applicant
The light-shielding material disclosed in Japanese Patent Publication No. 230 is widely used to satisfy these requirements, and as one method of further increasing the light-shielding ratio, a method of overlapping two sheets to form a curtain has been adopted. I have.

However, in such a lining curtain, it is necessary to adjust the degree of opening and closing each time in accordance with the state of the house in order to increase or decrease the amount of incident sunlight or the amount of ventilation in the house. It may be opened and closed several times a day. As an apparatus for performing such opening and closing, the apparatus shown in FIG. 1 using a sliding curtain is often used.

FIG. 1 is a perspective view of a double-roof type house 1 in which a lining curtain is attached to a lower part of a roof frame. As shown in FIG. 2, an A light shielding sheet 2 and a B light shielding sheet folded in an accordion shape are shown. 3 are arranged on the roof slope 4 on the left side in parallel with the ridge 5, and C light-shielding sheets 6 and D light-shielding sheets 7 of the same shape are arranged on the roof slope 8 on the right side.

[0006] The above 4 which constitutes each part of the lining curtain
The two light-shielding sheets 2, 3, 6, and 7 are supported in a reciprocable manner via hooks (not shown) with respect to drive wires 12 arranged at appropriate intervals on the entire surface of the curtain area. The mechanism reciprocates between two positions in a standby state A, B, C, and D shown in FIG. 1 which is converged in an accordion shape, and an unfolded state moving toward the joining lines X and Y. A group of a large number of shelf wires 9 is a drive wire 1.
2 to prevent the curtain from hanging down.

FIG. 3 shows a mechanism for simultaneously driving both the A light shielding sheet 2 and the B light shielding sheet 3 provided on the roof slope 4 on the left side. FIG. FIG. (B) shows the operating state when the curtain is deployed. As shown in both figures, the drive wire 12 moved by the winding drum 11 fixed to the drive shaft 10 circulates the A pulley 13, the B pulley 14, and the C pulley 15 sequentially in a closed loop,
One end of the A light shielding sheet 2 has an A fixing bar 16 provided at another position.
And the other end is connected to an A drive bar 17 which is fixed to the drive wire 12. On the other hand, one end of the B light shielding sheet 3 is fixed to a B fixing bar 18, and the other end is connected to a B drive bar 19.

In the mechanism shown in FIG. 3, when the drive shaft 10 is rotated clockwise from the stored state of the curtain shown in FIG. 3A, the drive wire 12 and the A drive lever 17 and the B drive bar fixed thereto are fixed. 19 is running, A light shielding sheet 2
The B light shielding sheet 3 is developed as shown in FIG. 3 (B), and the leading end portions of both are overlapped near the X-ray in FIG.
Further, the drive shaft 10 is moved from the unfolded state of the curtain shown in FIG.
Is rotated counterclockwise, conversely, the A light-shielding sheet 2 and the B light-shielding sheet 3 are folded in an accordion shape, and return to the stored state of FIG. The storage state shown in FIG. 3A is the standby state shown in FIGS. 1A and 1B, and the curtain is open.

By providing the opening / closing mechanism shown in FIG. 3 on the C light-shielding sheet 6 and the D light-shielding sheet 7 on the right roof slope 8, simultaneous opening and closing of the lining curtain of the entire area of the house 1 is performed. The material of the lining curtain in the shade cultivation method and the conventional technology for opening and closing the lining curtain have the above-described configuration, and by using such technology, excellent products can be grown.

[0010]

By the way, a double-layered curtain using two sheets superposed on each other has a high light-shielding rate and is useful and widely used as having moisture permeability, air permeability and water permeability. Have been. However, when using curtain devices such as sliding curtains,
Since the light-shielding sheet is used as a member of the lining curtain, it is necessary to fasten the light-shielding sheet to a drive wire at an appropriate pitch before spreading it on the shelf line 9 in the curtain area.

The spreading work is relatively easy in the case of a curtain made of one film, whereas the material of the light-shielding sheet having a two-layer structure is bulky, and two sheets are separately provided on the shelf line 9. It is necessary to spread the sheets at the same time, and the work load is large.
It was a more difficult task as it required passing between the two. As described above, in the stretching operation, the entire sheet is pressed onto the drive wire 12 by the pressing means while being spread on the shelf line 9,
It is necessary to keep this unfolded state for a long time and fix it.
A large number of workers were required from the beginning to the end of the deployment work, and the wind blew, which forced the work to be interrupted.

SUMMARY OF THE INVENTION The object of the present invention is to solve the above-mentioned problems and, when shading an agricultural house with two-layer lining curtains, efficiently deploy the curtains with a smaller number of workers. It is an object of the present invention to provide a novel curtain structure capable of performing the above-mentioned.

[0013]

To achieve the above object, the present invention has the following arrangement. In other words, the invention described in claim 1 is a lining curtain used for an agricultural house, wherein the upper and lower two sheets, which are made of woven and knitted sheets and have different performances, are formed into quadrangles each having substantially the same size. Agricultural house lining curtains characterized by stacking them, joining two adjacent sides in the vertical direction and integrating them together, and the invention according to claim 2,
The curtain according to claim 1, wherein the sheet of the woven or knitted fabric is formed of a light shielding material.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings. The following embodiment shows an example of a light-shielding lining curtain. FIG. 4 shows a plain-woven A sheet 21 formed from a tape having light-shielding properties and light-absorbing properties, and FIG. 5 shows light-shielding properties and light-reflecting properties. It is a B sheet 22 of a twill fabric interwoven from both a tape and a tape having heat ray reflectivity, both of which show partial plan views.

The A sheet 21 is made of a synthetic resin film obtained by kneading a black pigment and then forming a film. The A sheet 21 is further slit to obtain an A black tape 23 having a light-shielding property and a light-absorbing property. Both of the black tapes 24 are used as raw yarns, which are used for each process and woven in a plain weave structure.

The B sheet 22 is formed by slitting a synthetic resin film formed by kneading a white pigment and forming a slit. A white tape 25 having excellent infrared reflectivity is used as a warp. A three-layered vapor-deposited film having a synthetic resin film provided on the vapor-deposited layer is slit, and the vapor-deposited tape 26 having excellent light-shielding properties and infrared reflectivity obtained by slitting is used as a weft, and both are woven in a twill weave structure. It is made. From such organization, B sheet 22
A white tape 25 and a vapor-deposited tape 26 having a silver surface formed by a metal vapor-deposited layer alternately appear in the meridional direction and the weft direction on the surface.

After the A sheet 21 and the B sheet 22 are formed in a quadrilateral having substantially the same size,
Two adjacent sides, for example, right edge 27 and lower edge 2 shown in FIG.
8 are joined in a vertical direction by an appropriate means and integrated to form a lining curtain of the present invention. Specific means for joining and integrating two sheets is as follows:
Integration by sewing using a thread such as a vinylon thread, integration by welding and fusion using an ultrasonic sewing machine, a high-frequency welder, and the like, and integration by adhesion (adhesion) using an adhesive tape or the like are conceivable. However, in the present embodiment, the fusion bonding by the ultrasonic sewing machine is used, and this method has an advantage that the corresponding resin and material form are various and can be used with almost any reference material.

In the above-described embodiment, two fastening points for integrating the upper and lower sheets are provided at the right edge 27 and the lower edge 28. However, the present invention is not limited to this.
If the two sides are adjacent and perpendicular to each other, the fastening object of the present invention can be achieved. Although it is conceivable to simultaneously join and integrate the four sides of each sheet piece formed into a quadrilateral, the unit cost of the joining process is relatively high, and the ratio of the sheet to the sheet price is extremely high. The two-sided fastening is appropriate.

Thus, in the A sheet 21 of the present embodiment, the number of warp yarns is larger than the number of weft yarns.
No. 2 has a larger number of weft yarns than the number of warp yarns.
The gap between the constituent yarns unique to the woven fabric is maintained in a slightly shifted state. By making the densities of the two sheets different from each other as described above, there is an effect that the transmission of light from the gap is shielded from each other.

The A-sheet 21 and the B-sheet 22 are different from each other in the number of tapes to be driven, and also in the structure and operation.
It has the following differences. That is, the A sheet 21 is a plain woven fabric formed of a highly light-shielding tape, and the tape has a large frictional force and a small degree of freedom of the tape due to its structure. Such characteristics serve to prevent the deformation of the texture caused by the opening and closing of the sheet during actual use. The B sheet 22 is a twill fabric (oblique fabric) formed by a low light-shielding tape.
Located at a higher level. However, since the B sheet 22 is a low light-shielding sheet, it is necessary to have high water permeability and air permeability, and it is necessary to have a high flexibility at the upper position and large bulk. Such characteristics are suitable for a twill weave (oblique weave) in which the frictional force between the tapes is small and the degree of freedom of the tape is large.

The lining curtain according to the present embodiment, in which the A sheet 21 and the B sheet 22 are overlapped to form one sheet, is a light shielding curtain for shade cultivation in an agricultural house, for example, with the A sheet 21 inside and the B sheet A sheet 2 made of a woven fabric, with 22 facing outside.
1 and B sheet 22 have a double structure,
By retaining water permeability, it has a substantially perfect light-shielding rate and can prevent a temperature rise in the coating system.

That is, in the present embodiment, since the B sheet 22 is excellent in the infrared reflectivity and the light shielding property, the infrared rays from outside the coating system are reflected by the B sheet 22 to prevent the transmission of light. The light leaked from the sheet 22 can be absorbed by the A sheet 21 which is excellent in the light absorbing property and the light blocking property on the inside, and the light blocking rate as the lining curtain can be greatly increased. The A sheet 21 on the inner side has a light absorbing property. However, since the amount of sunlight absorbed is small, the heat generation can be suppressed, and the temperature rise in the coating system can be prevented.

In the above embodiment, the case where the lining curtain is a woven fabric and is used for shading has been described. However, the lining curtain of the present invention is not limited to this and can be applied to a knitted fabric, and different performances can be obtained. The present invention is used for the purpose of combining these two sheets and obtaining these combined effects. For example, a combination of a heat-retaining PVC film and an anti-fog PVC film, a combination of a heat-retaining PVC film and a moisture-absorbing sheet, etc. can be given as specific examples in order to achieve a heat-retaining effect.

The curtain of the present invention formed as in the above-described embodiment is stretched in a fixed direction as shown in FIG.
On the shelf line 9 of each other and fastened to each drive wire.
At this time, the curtain according to the present invention is formed of two different layers, but can be integrated by two-line fastening in the vertical and horizontal directions and can be handled simply as a single sheet. If the two sheets are not bonded and each layer is separately stretched twice, it is extremely difficult to correct the displacement of either layer. In either case, there is a risk that the fabric ends get tangled with the wire. In contrast, such a trouble does not occur at all in the curtain of the present invention in which two lines are joined. As shown in FIG. 6, the unfolding direction of the sheet at the time of extension is the unfolding direction indicated by F (the direction in which the sheet is pulled at the time of unfolding work) as indicated by the right edge 27 and the lower edge 2.
8 must be directed to the included angle direction. By setting the position of the sheet in such a direction and pulling the sheet, a good stretching operation can be performed.

[0025]

The performance required by the lining curtain of an agricultural house has recently become increasingly sophisticated and diversified, and a curtain satisfying these required performances with one type has not yet been commercialized. In terms of use, compounding (overlapping etc.) is in progress. However, the greatest bottleneck of such compounding is, as described above, the difficulty in expanding the lining curtain on the shelf line, which causes a rise in construction costs and significantly hinders its spread. Since the lining curtain according to the present invention integrates both sheets of different types, the sheets organized during the stretching operation are not caught or the layers are not shifted, and the stretching operation can be performed in exactly the same manner as a single sheet. It can do so and almost completely eliminates the problems of the prior art described at the outset.

[Brief description of the drawings]

FIG. 1 is a perspective view of an agricultural house showing a mounted state of a lining curtain.

FIG. 2 is a perspective view showing a storage state of the lining curtain.

FIG. 3 is an explanatory view showing a driving mechanism of a light shielding sheet,
(A) shows the operating state when the curtain is stored, and (B) shows the operating state when the curtain is deployed.

FIG. 4 is a plan view of an A sheet used in the embodiment of the present invention.

FIG. 5 is a plan view of a B sheet used in the embodiment of the present invention.

FIG. 6 is a perspective view of a lining curtain used in the embodiment of the present invention.

[Explanation of symbols]

 21 A sheet 22 B sheet 23 A black tape 24 B black tape 25 White tape 26 Evaporation tape 27 Right edge 28 Lower edge

Continued on front page F-term (reference) 2B024 DA01 DA02 DB04 DB07 EA04 2B029 EB08 EB15 EC04 EC12 LA03 RA07 4F100 AB10 AK01 BA02 BA12 BA26 BA32 CA13 DG12A DG12B DG13A DG13B EC032 EH661 GB01 JD02 JD30 JN05 JDN

Claims (2)

[Claims] 1. A lining curtain used for an agricultural house, wherein upper and lower two sheets, which are made of woven and knitted sheets and have different performances, are each formed into a quadrilateral having substantially the same size, and are stacked. A lining curtain for an agricultural house, wherein adjacent two sides are vertically joined to be integrated. 2. The lining curtain of an agricultural house according to claim 1, wherein the sheet of the woven or knitted fabric is formed of a light shielding material.