JP2010035537A - Agricultural film with swelling adjustment of double film for opening and closing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a double film compactly storable when transporting, storing and using agricultural facilities, emitting film air to the outside of the film in a short time when unwanted, and openable and closable by using a habitual manual opening closing tool or an automatic opening closing device. <P>SOLUTION: The film with swelling adjustment of double film for opening and closing, which has a suitable perforated opening part of completely open both widths or more than half length on a suitable place in the length direction is such that a suitable blast tube duct 6 is set in the middle of the two piled films, and a film 18 with a T shape tongue of a proper length is set outside the inner center of the two piled films. Furthermore, an air blower 11 which sends air to a double film pressing tube duct 4 is set on the lower circumference of the opening part of the agricultural double film, putting a suitable fixed stretch agricultural film or a suitable lower tube duct 3 between the double film pressing tube duct whose both the ends are fixed, and an air cover of a double film width or in the length direction is formed with a swelling pressure of the double film pressing tube duct 4 and a contact pressure of the lower film or the lower tube duct 3 by sending air from each of the air blowers 11. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to an agricultural film used in an agricultural house.

In recent years, the price of agricultural products grown in winter has risen due to soaring fuel for heating, and the income has fallen to less than half. Under such conditions, as a measure that can be made without changing the existing facilities as much as possible, measures to cover multiple agricultural films have been taken, but the saving effect of heating consumption is about 20 to 30 percent. It has not yet been solved the soaring fuel costs.
By covering the entire farmhouse with the air film forming film for house covering of Japanese Patent No. 4012036, it is possible to save heating fuel consumption over 40% of the conventional house, but especially in the winter except for the severe cold season It is important to ventilate the sides and shoulders in order to carry out room temperature control suitable for the above. In the patent film, the air in the air film becomes an obstructive factor, and there is a problem that it is impossible to open and close ventilation, and it is not widely used. Japanese Patent Application Laid-Open No. 2005-333932 has also developed a technique capable of forming and opening and closing an air film by double coating the lining curtain, but maintaining a constant thickness of the air film in a restricted house room and timely air in the film In order to adjust the film thickness, a small amount of air in the film is taken out and managed, so that the average temperature at night is 0.5% in the non-heating condition compared to the highly sealed air film film. 1 to 1 ° C lower, and the use of tomato cultivation has a problem of reducing the heating fuel saving rate by 5 to 10 percent.
A method for attaching a plurality of air mats to an agricultural house disclosed in Japanese Patent Application Laid-Open No. 2007-20492 has also been devised, but it is easy to blow by air blowing, but it does not discharge outside the membrane unless the input air takes 24 hours or longer. There is a flaw and it has not become popular. Since all air films currently being developed do not release air in the air film in a timely manner, there is a problem that the effect of the air film has not been fully utilized, and it has not been widely spread. Films with an air layer have been developed since the Showa 40's, and it is recognized that light is transparent and heat retaining properties are high, but they are bulky when transported and stored, and can be stored using existing switchgear. There are problems such as becoming too large and hindering the transmission of light in the house, and it has not spread widely in the field.

The present invention forms an air film with a set bulge thickness when a double-coated agricultural film is required, and when it is not needed, returns the air in the film to the original double coating in a short time, and the conventional single coating A double-film film for agricultural use that can be repeatedly opened and closed like a film and transported and stored in an agricultural facility is compact. Using this film structure, it can be used for interior lining in a house. It provides a means to increase the heating fuel saving effect than the use.

As a structure of agricultural double membrane film, as a means to quickly discharge the bulging air formed into an air film to the outside of the membrane and ensure the bulging to the maximum extent, the exhaust opening is the entire width of the film at both width ends or near the center in the length direction. Or more than half of the end in the length direction. The wider the opening, the faster the off-membrane exhaust of the air in the membrane, and the full width or the total length is preferable. Particularly, regarding the exhaust air, if the full length opening is provided at the position in the length direction of the double membrane film, The moving distance of the exiting air is short and wide, so that the air staying in the film is hard to accumulate and is suitable for any natural forced exhaust air. The wider the opening, the shorter the natural exhaust air time is preferable.

When a T-shaped tongue-attached film having an appropriate length is provided outside the center of the inner surface of the double membrane film, it is not necessary to fix the center of the double membrane film from above when the lining curtain is covered. To carry out this work, it is only necessary to lift up the coated film to the center, fix it, fix it again, and then recoat it from the inside with the center tongue covered. There is an advantage that can be achieved, and the center fixing of the upper surface film of the double membrane film becomes unnecessary, and the bulge of the air film formation can be formed on the entire surface of the double membrane film.

A double film with both ends fixed on an agricultural film having a suitable surface longer than the double film film or a suitable bottom tube duct fixed on the lower surface from the center of the opening of the double film film. Membrane holding tube duct is installed, covered with double membrane film, air is blown to the double membrane film and double membrane holding tube duct, and the internal pressure of double membrane holding tube duct is higher than the internal pressure of double membrane film bulge When air is blown, the air in the double membrane film is provided with a double membrane presser tube duct provided from the center from the opening, so the lid from the center of the double membrane film is free from air leakage. Can be configured. Since both ends of the double membrane holding tube duct are appropriately fixed, the pressure bonding with the lower surface film sandwiching the double membrane film becomes strong, and the degree of adhesion increases. Agricultural PO film that expands and contracts moderately to the bottom fixed agricultural film will have a stronger adhesion, and the function as a lid of the double membrane will increase. Will not drop. When the lower surface tube duct is used for the lower surface, the crimping strength is further enhanced by the upper and lower air pressures, and the crimping strength as a lid is increased. In addition, when the tube duct air pressure increases, the tube duct that was distorted and covered becomes straight and adheres, so it is suitable for use in the length direction of the double membrane film, especially when using a lining curtain. Suitable for use of the method. When the ventilation of the double membrane holding tube duct is stopped, the air in the tube duct flows back to the blower, the internal pressure is lowered, the lid is removed, and the air in the double membrane flows out of the membrane. As a result, it is possible to open and close using a conventional opening / closing device. In particular, the longer the opening length and the shorter the distance to the bulge of the double membrane, the faster the air in the membrane will be exhausted naturally. The increase is smaller and more preferable.

If a proximity sensor directly connected to the blower is provided on the upper surface of the double film, the upper limit of the bulge thickness in the air film can be determined, which is preferable for use in a lining curtain or tunnel in the house. In addition, since the air film is configured with the minimum amount of air that can float the upper surface film of the double membrane film as the amount of air blown into the double membrane by the proximity sensor, the in-membrane pressure becomes very low. For this reason, even if a double membrane holding tube duct blower and a double membrane film blower with the same performance are used, the double membrane holding tube duct internal pressure exerts almost 100% of the performance of the blower. Since the internal pressure of the duct is always higher than the internal pressure of the double membrane film, the air membrane lid function is exhibited and the air membrane formation is completed. When a blower duct is installed in the middle layer of the double membrane film with an exhaust port in the middle of the length of the film or a blower pipe is blown from the blower, the double membrane bulge starts to bulge from the center. The both ends of the double membrane swell with the same bulge at the same speed, and the bulge shapes before and after the double membrane are the same. Further, when a blower tube duct is provided to blow air, a blower pipe is not necessary from the blower to the center of the double membrane film, which is convenient. When air is blown from the end of the length direction, not from the center of the double membrane film, only the surrounding area starts to bulge quickly, and does not bulge with the same thickness up to the depth. Since it forms a uniform bulge and forms an air film that is inferior in heat retention and aesthetics, it is not particularly suitable for scenes used for lining curtains and tunnels.

When a double membrane film is used for the lining curtain, air with high humidity in the agricultural house is blown daily, so the air membrane becomes high humidity and condensed water accumulates. As a countermeasure, a nonwoven fabric with an appropriate width is sandwiched between both sides of the double membrane film, and if it is properly sealed, the condensed water is adsorbed to the nonwoven fabric and discharged outside the membrane due to the capillary water phenomenon of the nonwoven fabric. The amount does not exceed the amount, and it is possible to avoid the accumulation of condensed water in the double membrane film. In this case, it is preferable that the coating of the double membrane film is moderately inclined and that the nonwoven fabric is subjected to an antifogging treatment.

When using a double membrane film as a lining curtain in a scene where a heater is used, the blower inlet of the double membrane film blows directly from the vicinity of the chimney of the heater, near the heater or from the duct of the heater If it is installed at a position where warm air is inhaled and air with an air temperature higher than the average room temperature inside the double membrane film is blown into the double membrane film, the temperature inside the membrane becomes higher than the average room temperature inside the double membrane film. The outdoor radiation at the room temperature in the double membrane film coating is reduced, the operating time of the heater is reduced, and the heating effect can be saved by the double membrane film air membrane configuration. Unlike the diffusion of warm air through duct piping by conventional heaters, the entire inner surface of the house is covered with a warm air film layer, which reduces the temperature unevenness of the entire house, leveling the growth of crops, and the temperature of hot air duct piping. Compensate for unevenness.

When the problem solving means is performed, the following effects occur.
Agricultural double membrane film bulges in a gentle curve around the center of the film length, bulging below the set thickness, and installed in restricted facilities, required for ceilings, trusses and other agricultural houses It is possible to form an air film without contacting any accessory equipment. If an appropriate non-woven fabric is provided on the side of the agricultural double membrane film, the non-woven fabric absorbs the dew condensation water due to the accumulation of humidity from the air blown from inside the house, and the dew condensation water does not accumulate in the air film. In addition, there is an effect of solving the problem that the switchgear due to the accumulation of condensed water does not move uniformly. Controlling the double membrane film bulge thickness with the proximity sensor determines the air volume to be blown into the film, and the performance of the blower is only affected by the speed of the blow, and the air film internal pressure is always lower than the blower performance of the blower. Compared with a double membrane presser tube duct that receives 100% of the air blowing performance of the double membrane presser tube duct, the internal pressure of the double membrane presser tube duct is always higher than the internal pressure of the double membrane film. Can be constructed. Since a tube duct made of synthetic resin film is used, the lid can be used for curved surfaces and inclined surfaces. For long scenes, if the front and back of the tube duct are properly fixed due to air thickness, the lid will be straight. become. When the bottom tube duct is used on the lower surface, the adhesion with the double membrane holding tube duct is increased by the air pressure, the lid function is strengthened, the air leakage in the double membrane film is eliminated, and the air membrane has no air leakage. It becomes a highly heat-retaining air film that does not deteriorate the heat retaining property due to air leakage. In addition, when the air flow to the double membrane holding tube duct is stopped, the air pushed into the tube flows backward to stop the lid function, and the air in the double membrane film has a wide opening that is more than half the full width or length. It flows out of the membrane through the section. As a result, when the double membrane holding tube duct is arranged on both side end faces of the double membrane, the remaining air in the membrane is pushed out using a conventional winding device, so that it can be opened and closed up to the position of the blower tube duct like the conventional single coating.
If the side film of the outer air film is double coated, and the double film holding tube duct is provided on both ends, the side air film is formed and cooling from the side of the outer air film is reduced. There is no wind intrusion from the stacking allowance, and the airtightness of the house is enhanced, and the effect of minimizing the decrease in heat retention is exhibited. When the inside of the house becomes hot, it can be rolled up in the same manner as usual, so it has the effect of creating an agricultural house that has higher heat retention than conventional houses and has environmental conditions that allow easy management of high-temperature countermeasures.
Covered as a lining air film, the position where the residual heat around the heater is generated at the blower inlet of the blower or the warm air of the heater is branched directly from the duct and drawn into the double film, and the air temperature inside the film If it is set higher, the outdoor radiation of the coated room temperature will be less than the heat insulation enhancement by the air film formation configured by the air blower installed in the house appropriately. As a result, the operating time of the heater is reduced and the heating consumption is also reduced. To do. For this reason, the heating saving effect is higher than the oil saving effect by the air film formation, and the heating saving effect with higher efficiency is achieved. In addition, since the dry warm air is sent into the air film, there is an effect that condensation in the film does not occur.

The best mode for carrying out the present invention will be described below with reference to FIG.
A suitable agricultural film 28 is fixedly attached to the both ends of the lining support 25 provided on the both ends of the house 8 in the agricultural house 8, and the lower tube duct 3 is provided on both sides of the bottom of the support ridge film opening 28. The length of the column is fixedly covered, and the inner surface film 2 and the outer surface 1 inner surface 2 having an elliptical continuous hole in the longitudinal direction on both sides sandwiching the center of the T-shaped beveled film 18 and the inner surface film 2 thereon. An air blowing duct having an exhaust port in the middle of the length of the film is provided in the middle of the film, and both width surfaces are coated with an agricultural double membrane film that is appropriately heat-sealed. The attached film 18 is fixed from the inner side of the coating of the double membrane film by the fixing tool 19. On top of this double membrane film, a double membrane holding tube duct is provided on the lower tube duct 3 fixed on both sides with the peak of the lining strut, all the tube ducts are connected by the blower pipe 5, and the blower 12 Install it to blow. At this time, both ends of the double membrane holding tube duct 4 are appropriately fixed. A magnetic proximity sensor 9 directly connected to the bulge adjustment panel 10 is provided on the double film, and a proximity sensor sensing plate 14 is appropriately attached to the upper film 1 below the bulge adjustment panel 10. Directly connected to the blower 11, the air inlet 21 of the blower 11 is provided around the chimney 15 of the heater 17. The bulge adjustment panel 10 is directly connected to the double membrane holding tube duct blower, and only the power switch is shared. The two air blowers are turned on to start blowing, and the double membrane film blower pipe 16 to the blower tube duct 6 are connected. When the air flow is started in the double membrane film, the bulge starts from the blower tube exhaust port 7 provided at the center in the longitudinal direction of the double membrane film, and the same is applied to both width surfaces of the double membrane film. The film is swelled at a speed, and a double film film lengthwise cover is formed by bulging and pressing the double film holding tube duct 4 and the bottom tube duct 3 to form an air film. When the power of the bulge adjustment panel 10 is turned off, the air in the double membrane tube duct flows backward toward the blower, the double membrane holding lid opens, the bulge air in the double membrane film flows out of the membrane, It will be able to open and close as usual.

The invention's effect

Using this best mode of the invention, unlike the double membrane provided with both width openings, the blower piping only needs to be around the power source, the cost and workability are improved, the opening is longer and more perforated Therefore, it is large and the amount of exhaust during off-membrane exhaust is large, and the movement of air that does not act is short in the width direction, so natural exhaust can be performed in a short time, and air can be removed even when it is wound up and forced exhaust Because it is good, it can be opened and closed with a low load. In the formation of the bulge, the bulge pressure of the tube duct is used up and down, so that the contact pressure increases and air leakage decreases. Further, since the contact is made on a straight line, the possibility that the contact displacement occurs is low even if the air pressure becomes a bone and the length is long. Since the proximity sensor uses a magnetic sensor, a bulge can be formed without applying a load to the outer film. If a thin washer is used for the sensing plate, the dent of the film is minimized by the weight of the sensing plate, and there is no abnormality in bulge formation. Since the film is fixed from the inner surface with the T-shaped tongue-attached film, the work efficiency in coating the film is improved. Since the proximity sensor is used, the air film thickness can be adjusted according to the shape of the facility.
Since the proximity sensor and the blower are directly connected through the bulge adjustment panel, the amount of air blown in the membrane is limited, and when a blower with the same capacity is used, the air pressure of the double membrane blower is low and the tube duct blower that always blows up with the full capacity of the blower Always lower than air pressure. For this reason, the swelling air of the double membrane does not flow out of the membrane, and the swelling can be formed. In addition, since warm and dry air around the chimney of the heater is blown, the temperature in the double membrane changes high, maintains high heat retention, reduces the heating operation time, and reduces temperature unevenness in the house. In addition, since dry air is blown, the generation of condensed water in the membrane is reduced.

In Iwaki City, Fukushima Prefecture, a house with a frontage of 3m and a depth of 8m was set up, and a 75-micron thick agricultural PO film with a width of both ends of 1m was fixed to a lining frame with a frame arch length of 4.2m and a depth of 6m. On the inner surface of the agricultural PO film with a thickness of 50 microns, the agricultural PO film with a thickness of 75 microns is arranged, both sides are heat-sealed with no seals on both sides, and a T-shaped bellows film with a width of 15 cm is provided outside the center of the inner film. A double membrane film with a width of 4.2m and a length of 6m with a tube duct made of agricultural PO film having an exhaust port at a center of 3m at the center of the outer diameter from the position 1.2m from both ends to the middle of the outer surface. It covered, and the both ends were fixed to the pipe with the hoisting machine provided on the ground with the backer. A double membrane presser tube duct with a folding diameter of 30cm and a length of 4.4m is provided on the bottom fixed PO film and double film, and both ends are fixed with springs. A PVC pipe with a diameter was provided, and a double membrane holding tube duct arranged in the front and back was connected and jointed to a dedicated blower for the double wound holding tube duct. The double membrane film was fixed to the center pipe of the frame by a packer with a T-shaped tongue from the inside. A proximity sensor that responds to magnetism was placed on the upper surface of the double membrane film at a position where the bulge thickness would be up to 30 cm, and a thin washer was attached to the outer surface agricultural PO film with a repair tape below it. The proximity sensor is directly connected to the bulge adjustment panel, the double membrane blower is directly connected to this bulge adjustment panel, and the double membrane blower and the tube are connected to the blow tube duct with a folding diameter of 10 centimeters by the blow pipe fixed to the double membrane blower. The duct was blown from the same power source to form an air film. As a result of using a 40-watt blower, the bulge internal pressure of the tube duct was 250 Pascals, and the bulge internal pressure in the double membrane air film was 10 Pascals at maximum, and the air film was formed.
As for air leakage, the double membrane film was folded and sealed with a repair tape, and as a result of checking the air leakage by its swelling, it was judged that there was no air leakage because it did not swell. Moreover, as a result of comparing the lining double membrane film that caused air leakage under the conditions of [Reference Material-2] and the lining double membrane without air leakage, the swelling of the double membrane is maintained even if air leakage occurs. If done, the room temperature in the coating tends to be about 1 ° C higher than the conventional single coating, but the room temperature at 1 ° C is lower than the double-film film without air leakage, reducing heating fuel consumption. The result was 5 to 10 bar cents lower depending on the degree of air leakage.
The same result was obtained when field verification was carried out using a film with a width of 9.2m and a length of 70m in Rankoshi-cho, Hokkaido. When the winding was started at the same time as the air supply was stopped, the load increased by 1.2 times the conventional single winding. I was able to roll it up and down. When the pressure inside the membrane is 3 to 5 Pascals, it is about 1.1 times. The smaller the bulge thickness is, the smaller the increase in the hoisting load is, and the load is close to the conventional single hoisting. there were.

In Iwaki City, Fukushima Prefecture, a house with a frontage of 3m and a depth of 8m, a frame arch length of 4.2m, and a lining frame of a depth of 6m, the installation of air pipes is reduced, and the air is discharged outside the air membrane in a short time with natural exhaust As a countermeasure, a polyethylene bottom tube duct with a folding diameter of 30 centimeters is fixed at a position 10 centimeters below the center column of the frame and fixed in the length direction of the frame, and a width direction heat seal with an outer surface of 50 microns and an inner surface of 75 microns. In addition, a T-shaped bellows film with a width of 10 cm is provided on the outer side of the center inner film, and an elliptical perforated hole with a width of 2 cm and a length of 3 cm is continuously long in the vicinity of the center of the inner film. It is provided 50% in the length direction, and a tube duct made of polyethylene with a folding diameter of 15 cm is located in the middle of the frame between the inner film and the outer film. Cover the inner frame with a double-layer film that has an exhaust port for exhausting from the center, and fix the film to the center frame with a packer from the inner side where the film with T-shaped tongue is attached. Both side surfaces were fitted with a commonly used hoisting pipe, and were wound once or twice, and a double membrane holding tube duct made of polyethylene was covered on the bottom tube duct from above the double membrane. On the coated tube duct, a magnetic sensor is provided at a position where the bulge thickness reaches a maximum of 30 centimeters. Under the proximity sensor, a sensing plate composed of a 10 cm square thin iron washer on the outer film. Apply with repair tape. Two dedicated blowers for the double membrane blower and tube duct blower were prepared for the blower, and in particular, the double membrane blower was installed at a place where the remaining heat of the heating facility could be taken.
Under the above conditions, the blower for the double membrane blower is directly connected to the blow duct of the double membrane, and the blower for the tube duct blower is directly connected to each tube duct through the blow pipe, and when the blow starts, the double membrane is brought to the proximity sensor contact position. Winding up with a hoisting pipe attached to the side immediately after the air blows off makes it possible to wind up with a load as low as the usual practice, and it is possible to verify the exhaust effect of a wide opening and omit the piping of the film length, and the film width It was confirmed that the natural ventilation time can be shortened by 20 minutes or more compared with the ventilation.

In Iwaki City, Fukushima Prefecture, two houses with a frontage of 3m and a depth of 8m were set up, covered in the same way as described in [0013], and a fan was installed at the same position at the same height, just below the double membrane fan. The oil heater is installed at a position that is equidistant from the center of the house, the room temperature is 50 cm above the center of the house, the air temperature is the blower inlet position, and the air film temperature is 2 m in the film. It is the result of [Reference Material-1] when surveyed at the position. The average temperature from 17:00 to 5:00 the next morning is as high as 1.2 to 1.4 degrees in the air heater, and the temperature in the air film is 2 It was a result that was higher by 1 degree and the temperature of the air outlet was 5.9 degrees higher, and that the air film air temperature had an effect of maintaining a high room temperature in the house, suggesting the possibility of increasing the heating efficiency. In addition, the air temperature was not measured, but there was a demonstrative example in which the heating consumption was reduced by 49% in the grape house in Shimane Prefecture, which was blown from the side of the chimney of the heater, compared to the conventional house. 9 to 10 percent higher. This means of use is effective for double membranes of lining curtains or tunnels with a single outer coating, and the outer air membrane is more susceptible to the influence of outside air without the exchange of warm air by opening and closing, and the temperature inside the membrane is reduced. The result was not suitable because of the rapid decline.

Potential for other fields of use

Agricultural air film house is rolled over the shoulder and ventilated film on the shoulder and the side roll-up open / close film are double coated, and the double film presser tube duct is provided on the both sides of the film. A double membrane pressure tube duct is inflated with a blower that becomes wind pressure, rolled up and opened like a conventional house, and the temperature of the agricultural house is adjusted to an appropriate temperature, making it an agricultural house that keeps high heat retention and does not invade the gap air. As a result, the disadvantages of the agricultural air membrane house can be solved, and the agricultural house that can be used year-round by double coating the entire surface.

This film can be composed of more than triple, not double, and any agricultural film is possible. For example, if a low gas permeable film is double coated and an air film is constructed, it will be possible to hold the bulge until the next morning with a single blow, and the inside of the film can be made into a static air layer to keep warm. May increase performance.

Agricultural double membrane film with continuous perforated openings in the length direction near the center is covered with a lining curtain, and the upper and lower sides of the double membrane film are sandwiched by tube ducts to form a bulge Agricultural double membrane film with both full width openings covered with lining curtain, agricultural film is provided on the lower surface of the double membrane film, tube duct is provided on the upper surface, and sandwiched up and down to form a bulge Agricultural double membrane film cross section perspective view with continuous perforated opening in the length direction near the center Cross section perspective view of agricultural double membrane film with full width opening

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Double membrane outer surface film 2 Double membrane inner surface film 3 Lower surface tube duct 4 Double membrane presser tube duct 5 Double membrane presser tube duct Fan pipe 6 Double membrane fan tube duct 7 Fan tube duct exhaust port 8 Agricultural house frame 9 Proximity Sensor 10 Double Membrane Swelling Adjustment Panel 11 Double Membrane Blower 12 Double Membrane Holding Tube Duct Blower 13 Hoisting Open / Close Device 14 Proximity Sensor Sensing Plate 15 Heating Machine Chimney 16 Double Membrane Film Blower 17 Heating Machine 18 T-shaped Velo Attached film 19 T-shaped tongue-attached film fixture 20 Proximity sensor cord 21 Blower air inlet 22 Winding pipe 23 Non-woven fabric 24 Agricultural double membrane film full width exhaust opening 25 Arch lining strut 26 Central lining strut 27 Blower cord 28 Lower surface fixing Agricultural film 29 Agricultural double membrane film length Countercurrent continuous perforated exhaust opening

Claims (3)

Appropriate double-covered suitable agricultural film with both ends or near the center in the length direction or one end side provided with a non-seal length of more than one-half or a perforated exhaust opening of appropriate shape Some of the double-coated inner agricultural films have a tongue-shaped film projecting in a T-shape on the central outer surface, and the middle layer of the double-coated film has an air exhaust vent at half the length of the film. An appropriate synthetic resin film air duct duct or an appropriate air outlet is provided, and the air duct duct enters the intermediate layer through the outer surface of the inner film having an appropriate length and is appropriately fixed to the inner surface film. Agricultural double membrane film, in which a suitable non-woven fabric is fixed to the end of the double coated film in the length direction. [Claim 1] An agricultural film of an appropriate size or an appropriate shape having an appropriate size, which is appropriately longer than the end face or the length direction, at an appropriate position on the lower surface of the double membrane film from the exhaust opening. The bottom tube duct of the synthetic resin film is appropriately fixed, and the double membrane holding tube duct of an appropriate synthetic resin film with an appropriate shape with both ends appropriately fixed on the upper surface is covered and covered. In some cases, a proximity sensor directly connected to a blower that blows air to the double membrane film is provided at an appropriate height on the upper surface of the double membrane film, and at least the swelling pressure of the double membrane presser tube duct is It is higher than the internal pressure of the double membrane film air film formation bulge, and the bulge of the double membrane tube duct will close the opening of the double membrane film opening, and it will open when the air flow is stopped Features and the agricultural double membrane film bulge adjustment device. Warm air is blown into the double membrane from the air around the heater having a temperature higher than the average room temperature in the agricultural house or from the air blower appropriately installed through a suitable tube duct. [Claim 1] A lining curtain and a tunnel film in which an air film of the agricultural double film according to [Claim 2] is formed.

Images