KR100406022B1 - Method for Manufacturing films with Multiple Layers for Agricultural Vinyl House - Google Patents

Abstract

The present invention relates to a method for manufacturing a multilayer film of an agricultural vinyl house, in particular, by using an additive to increase the radiation of far-infrared rays in the vinyl house to shorten the growth period of the crop, to remove the fog generated by the temperature difference between inside and outside, To improve the transmittance of sunlight by complementing invincibility, and to produce a long-lasting agent that has excellent weather resistance against UV rays, as well as high resistance to pesticides and sulfur, and to increase the life of the film, so as to effectively work on crop growth. The present invention relates to the combination of each functional additive and resin added to the longevity layer of the outer layer of the multilayer film of the agricultural vinyl house consisting of a multilayer film (three layers), the thermal insulation layer of the middle layer, and the unlayered layer of the inner layer. First, one surface layer of 0.1 to 10% by weight of a sunscreen (UV) and 0.1 to 15% by weight of no load Long life layer composed of linear low density pulley ethylene (LLDPE) containing and low density polyethylene or vinyl acetate content of 20% by weight or less, the other layer is 1 to 5% by weight of silica, alumina or a flexible compound thereof 20 wt% or less of an ethylene-based resin or vinyl acetate containing 0.1 to 10 wt% of a sunscreen agent (UV agent) and 0.1 to 40 wt% of an additive that radiates far infrared rays and 0.1 to 15 wt% of an invincible or anti-fog agent. Insulating layer composed of ethylene vinyl acetate copolymer of ethylene, and another layer, designated as unlayered, contains 0.1 to 5% by weight of a sunscreen (UV agent) and a fluorine compound composed of 8 to 30 molecules of fluorine. Low density polyethylene or vinyl acetate containing 20% by weight or less of a vinyl acetate ball containing 0.1 to 10% by weight of an unpacking agent and 0.1 to 10% by weight of an antibacterial agent. A multi-layer film manufacturing method of agricultural vinyl house composed of coal, which complements and improves the insulation and invincibility of conventional vinyl house film paper, and mixes additives that emit far-infrared rays into the film during the production of agricultural vinyl house film paper. By selecting the appropriate resin for each film, it improves the invincible duration 1.8 times compared to the existing film, and has the heat insulation effect to improve the temperature in the house by 4 ~ 5 ℃ by far infrared rays. Preventing freezing up to 7 ℃ to effectively improve the growth and sugar content of plants, crops, and the like, and the invention relates to a multi-layer film manufacturing method of an agricultural vinyl house that has the effect of increasing the life of the film.

Description

Method for Manufacturing films with Multiple Layers for Agricultural Vinyl House}

The present invention relates to a method for manufacturing a multilayer film of an agricultural vinyl house, and in particular, a film containing the functional additives and resins added to a long life layer, an insulating layer of a middle layer, and a non-layered layer of an inner layer in an outer layer of a film. In the manufacturing process, the additive that emits a large amount of far-infrared rays is mixed inside the film, and the appropriate resin for each layer is selected to improve the invincible duration by 1.8 times compared to the existing film, and to keep the temperature inside the house by the far-infrared ray 4 ~ 5 ℃. Since the crops may suffer cold damage at or below -5 ℃, it can be prevented from freezing up to -7 ℃ to effectively increase plant growth, crop sugar, color, etc., and to increase the life of the film. The invention relates to a multi-layer film production method of agricultural vinyl house.

The resins used in the film of the agricultural vinyl house are mainly polyethylene, ethylene vinyl acetate copolymer, polyvinyl chloride, polycarbonate, etc. In order to use the thermoplastic resin as the agricultural vinyl house film, a functional additive having the following functions is used. It can only be used when added. That is, in order to maintain and preserve the temperature in the vinyl house at a temperature suitable for growing crops, water droplets formed on the surface of the vinyl house film by adding a heat insulating agent using silica and alumina compounds (Al ₂ O ₃ , SiO ₂ ) Sunscreen and UV absorber to prevent aging and oxidation by ultraviolet rays of sunlight even when film is exposed (installed) in the open area for about a year without using a surfactant to let it flow down the surface of the film without falling down. The production of a film by the addition of a longevity agent added is a common technique currently in use.

Most of these agricultural vinyl house films were single-layer films, but recently, manufacturing methods have been developed to improve the physical properties of agricultural vinyl house films by manufacturing two or three layers. However, these multi-layer films have improved physical properties (tensile strength, elongation, etc.) and weather resistance compared to the existing films, but it is difficult to cultivate crops required by farmers because of the limited thermal effect in the plastic house. In other words, Japanese Patent Laid-Open No. 62-179939 impregnated the middle and inner layers of the multilayer film to improve the film's invincibility, and Japanese Patent Laid-Open No. 63-115743 further improved the heat retention. A method for producing a three layer film is described.

In addition, Japanese Unexamined Patent Application Publication No. 4-47936 further impregnated the invincible in each layer of the three-layer film to further improve the invincibility. However, these multi-layer films have been strengthened invincibility and weather resistance compared to the existing film, but because the fog caused by a large temperature difference due to the warmth in the house, the sunlight permeability has been found to be damaged due to the farmers complaints. In other words, a film that satisfies functions such as transparency, invincibility, and work strength has been obtained by conventional means, but it is difficult to remove the mist generated thereby.

As a method for eliminating the fog generated in such a plastic house, a fan is installed and operated in a vinyl house to send moisture to the outside. Alternatively, a boiler is installed inside the plastic house to raise the temperature to operate the fog. There are many problems, such as using a lot of methods to get rid of, but the method has the disadvantage that the maintenance costs are consumed a lot.

The present invention has been made in order to solve the above-mentioned conventional problems, the object of the present invention relates to the functionality of the film of the agricultural vinyl house, more specifically, the thermal insulation and invincibility of the agricultural film so far It is to supplement and improve the function. In particular, by using additives to increase the radiation of far-infrared rays in agricultural vinyl houses, the growth period of crops can be shortened by about 20 days, and the fog generated by the temperature difference inside and outside of the vinyl house is eliminated, and invincibility is compensated for by sunlight. It increases the transmittance and produces a long-lasting agent that has excellent weather resistance against chlorine and sulfur-based pesticides or sulfur itself, which not only affects weather resistance to ultraviolet rays (UV) in sunlight, but also affects the weather resistance of the resin, and thus has a long lifetime. Its purpose is to be able to work more effectively in crop growth, such as to increase the production of the present invention, by adsorbing the water floating inside the plastic house by producing a hydrophilic surfactant mixed in the film during the film production By adsorbing supersaturated moisture to strong hydrophilic film for a quick time In order to improve the effect of heat retention, the WIR radiation agent composed of inorganic compounds such as FeCr, Mn, SiO2, and Al2O3 is prepared to improve the effect of heat retention. The use of the film improves this drawback.

Thus, the present invention has been improved by manufacturing a spray agent composed of a specific fluorine compound to be used in the film of a specific multi-layer structure so that the fog in the agricultural vinyl house can be removed, and also to the early stage of agricultural vinyl house film Most of the oxidation has been caused by heat and light, and improvements have been made only to improve the weather resistance to UV (ultraviolet) rays in sunlight. However, the type of oxidation that has recently occurred in each film company may be caused by heat and light. When cultivating the chlorine-based, sulfur-based pesticides (or pesticides) due to pests or by burning sulfur, it can be seen that it is easily oxidized by the combustion components and sulfur in the pesticide. The reason is that the raw material of weathering agent reacts with chlorine and sulfur, etc., so that the function of weather resistance is lost. Therefore, the function of preventing the oxidation of the film is deteriorated. Also, due to global warming, heat and light transmission is high, and pesticides and sulfur of farms It is presumably due to the increase in the use of fumes and the like.

Therefore, as a result of continuous research to estimate and solve the above causes, the present invention has invented a long-acting agent having excellent weather resistance against heat, pesticides and sulfur, and also mixed additives for emitting far-infrared rays into the film during the production of vinyl house film. By selecting the appropriate resin for each layer, it improves the invincible duration 1.8 times compared to the existing film and improves the temperature inside the house by 4 ~ 5 ℃ by far infrared rays. Freezing up to 7 ° C can be prevented.

Therefore, as described above, the present invention can be achieved by manufacturing a film of a specific multilayer configuration that is excellent in transparency, invincibility, work strength, and also excellent in anti-fogging property, weather resistance (long life) and heat retention. The present invention has been completed.

1 is a partially enlarged cross-sectional view of the multilayer film of the present invention

2 is an illustration of a mechanism for evaluating high temperature long-term deficiency of the film of the present invention.

3 is an illustration of a mechanism for evaluating initial low temperature invincibility of a film of the present invention.

4 is an exemplary view of a mechanism for measuring crop growth and antimicrobial activity

5 is an illustration of an instrument for measuring warmth;

6 shows an example of a mechanism for measuring pesticide resistance.

7 is an exemplary view of a weather resistance promoting test mechanism

<Explanation of symbols for main parts of drawing>

1: Multilayer film of agricultural vinyl house 10: Long life layer

20: heat insulation layer 30: no lamination

The most important in the present invention is the selection of weathering agent (long-lived agent) to increase the film life while increasing the heat insulation, invincibility, the selection of the anti-fog agent to remove the fog in the house and the appropriate selection and mixing ratio of the resin for each layer.

The present invention provides each functional additive added to the longevity layer 10 of the outer layer of the multilayer film 1 of the agricultural vinyl house composed of a multilayer film (3 layers), the heat insulating layer 20 of the middle layer, and the unlayered layer 30 of the inner layer. Regarding the compounding of the resin, first, one surface layer contains 0.1 to 10% by weight of a sunscreen (UV agent) and 0.1 to 15% by weight of an invincible low density polyethylene (LLDPE) and 20% by weight of low density polyethylene or vinyl acetate. The long life layer 10 which consists of the following ethylene-vinyl acetate copolymers, The other layer contains 1 to 5 weight% of silica, alumina, or its flexible compound, and 0.1 to 10 weight% of a sunscreen (UV agent). And an insulating layer 20 composed of an ethylene-vinyl acetate copolymer having an ethylene-based resin or vinyl acetate content of 20% by weight or less, containing 0.1 to 40% by weight and 0.1 to 15% by weight of an additive which is far-infrared and 0.1 to 15% by weight of an invincible agent. In another layer, which is referred to as a non-layered layer 30, 0.1 to 5% by weight of a sunscreen agent containing 0.1 to 5% by weight of a sunscreen (UV agent) and an antiseptic compound composed of 8-30 molecules of fluorine may be used and antibacterial. A method for producing a multilayer film of an agricultural vinyl house comprising a low density polyethylene containing 0.1 to 10% by weight of a vinyl acetate or a vinyl acetate copolymer having a vinyl acetate content of 20% by weight or less.

Unexplained symbol "300" is thermometer, "400" heater, "500" is cool fan, "600" is house, "700" is sunlight, "800" is sulfur, "900" is light bulb "1000" is dirt, "1100" is an ultraviolet light, and "1200" is a motor.

The far-infrared radiation agent added to the longevity layer 10 of the present invention adds an inorganic compound such as Fe, Cr, Mn, Al2O3 so that the emissivity is 94% or more, and fine grinding to improve transparency and increase light transmission. The far-infrared radiation additive is 0.1-50% by weight of the above-mentioned far-infrared radiation agent, 2-10% by weight of the glycerin-based ester compound, 6-10% by weight of the sorbitan ester compound, and 6-6% of the polyglycerol-based ester compound. It is proposed to prepare by blending 10% by weight, stabilizer 2% by weight or less, filler 2% by weight or less, and resin 77.5% by weight or more.

The amount of the far-infrared radiation additive used in the present invention is selected from ethylene-based resin / far-infrared radiation additive = 60-99.5 / 0.5-40 parts by weight. If too small amount is used outside the above range, the far-infrared radiating ability decreases and the permeation of agricultural film of solar energy decreases, so that the temperature in the vinyl house does not rise, and the amount of energy required for the growth of crops decreases, resulting in poor growth. . In addition, due to the high number of pests, the use of pesticides increases, reducing the freshness and quality of crops, reducing farmers' incomes, and the excessive use of pesticides causes cost increases. This can fall.

In addition, the antimicrobial agent may be added to the non-layered layer 30. This antibacterial invincible can suppress the growth of mold in the house, so the plant grows in a pleasant atmosphere, and thus freshness can be improved.

In addition, the use of the invincible agent used by the invincible layer 30 is not desirable due to the lowering of the invincibility at less than 0.1% by weight, the heat resistance is lowered in excess of 10%, and in the summer when the temperature rises, the uninhibitor is a film Blooming (blooming) the surface of the film is not preferable because the whitening of the film becomes remarkable. Invincible agents added to this inner layer can be used a variety of invincible agents well known in the art. These include polyoxyalkylene ethers, partial esters of polyhydric alcohols, partial esters of alkyloxide adducts of polyhydric alcohols, higher alcohol sulfate ester alkali metal salts, alkylaryl sulfonates, quaternary ammonium salts, and fatty acid amine derivatives. .

Specifically, polyoxyethylene lauryl ether, polyoxyethylene stearyl ether, polyoxyethylene nonylphenyl ether, polyethylene glycol mono palmitate, polyethylene glycol mono stearate, polyoxyethylene sorbitan mono laurate, rolyoxyethylene sorbitan Mono palmitate, glycerin mono laurate, glycerin mono palmitate, glycerin mono stearate, glycerin mono oleate, pentaerythritol mono laurate, sorbitan mono palmitate, sorbitan mono behenate, sorbitadastearate, di Glycerin Monostearate, Diglycerin Monosorate, Triglycerin Multistearate, Triglycerin Diorate, Tetraglycerin Distearate, Tetraglycerin Diorate, Sodium Laurylsulfate, Sodium Ddecyl Benzene Sulfate, Butal Naphthalene Sulfate Sodium Acid, Cetyltrimethyl Ammonium Collide, Alkyldimethyl Benzenyl Diammonium Collide, Dedyl Amine Hydrochloride, Lauric Acid Laurylamide, Ethyl Phosphate, Triethyl Cetyl Ammonium Iodide, Oleaminoamino Diethylamine Hydrochloride, Ddecyl Fili And basic pilidinium salts of dinium sulfate.

Especially, the ester of polyhydric alcohols, such as a C14-C22 fatty acid, a sorbitan, sorbitol, glycerin, polyglycerol, and a polypropylene glycol, or a nonionic surfactant which has the alkene oxide adduct as a main component, etc. are preferable.

It is also possible to select and use one type of these invincibles, but two or more kinds of invincibles may be blended and used in order to simultaneously satisfy initial oil repellency, long-term persistence, and low temperature oil repellency.

In the present invention, the long life layer 10 is a low density polyethylene and ethylene-vinyl acetate copolymer has poor weather resistance due to UV (ultraviolet rays), so that a light stabilizer, an ultraviolet stabilizer, a heat stabilizer, or the like is added to the film layer for a long period of time. While maintaining excellent weather resistance, transparency and dust resistance were improved.

Until now, the film weatherability has been improved only to improve the weather resistance against UV (ultraviolet rays) in the sunlight, but the present invention is actually a pesticide due to burning pesticides or sulfur in order to prevent pests when farmers replenish crops Knowing that there are many problems in weatherability due to chlorine and sulfur components, there have been ongoing studies to solve them. Pesticides and sulfur react with the water in the film to produce hydrochloric acid and sulfur oxides, which are considered to have a significant effect on the oxidation of the film. The process of oxidation starts from the house steel part. It is presumed that the additive consumption is higher than other parts because the temperature rises by radiant heat in the iron part. In order to improve weather resistance against UV rays in actual sunlight, only so-called Hals Type, which absorbs ultraviolet rays below 280 nm as a UV absorber, has been used until now, but the present invention has a strong absorption band at the above Hals Type and 300 nm to 340 nm. Benzophenone and Benzotriazole were mixed to complement each other and used as an antioxidant. Inganox 1010 and 1076 were used as antioxidants. However, even with the above method, it was difficult to completely compensate for weather resistance caused by pesticides or sulfur, and thus the present invention is a safe pesticide-resistant UV that is not reactive with sulfur or chlorine in the molecular structure of the Hals Type UV absorber. As a result of experiments with absorbents, it was possible to approach the weathering by pesticides or sulfur. However, in the present invention, the film thickness of the longevity layer 10 needs to satisfy 10 μm or more. If the thickness is smaller than this thickness, the film life due to invincibility and UV (ultraviolet rays) may be shortened and the weather resistance may deteriorate. The content of the longevity agent should be added at least 0.4% by weight in the film.

The resin used in the present invention is a low density polyetherene or an ethylene-vinyl acetate copolymer having a vinyl acetate content of 15% by weight or less. Use of resin can also be used by blending these polymers. If the vinyl acetate content is more than 15% by weight, it is not preferable because the invincibility and heat resistance deteriorate.

It is preferable that the vinyl acetate content is in the range of 5 to 15% by weight in view of gradually blotting the appropriate amount of the invincible and sustaining the long-term drop effect.

The multilayer film configuration of the present invention is composed of a 15 to 25% longevity layer (10), 50 to 70% of the insulating layer (20), 15 to 25% of the non-layered layer (30), the above-mentioned The film thickness of each of the longevity layer 10 / the heat insulation layer 20 / the unlayered layer 30 preferably satisfies at least 15 µm of no delamination, 30 µm of the insulation layer, and 15 µm of the longevity layer (60 µm in total film thickness).

Longevity layer 10 is preferably used on the low linear density polyethylene and low density polyethylene in terms of transparency, mechanical strength, scratch resistance, electrical workability, the use ratio of the low linear density polyethylene and low density polyethylene, the use ratio is low linear density It is preferable to comprise 70 to 30 weight% of polyethylene and 30 to 70 weight% of low density polyethylene.

Agricultural vinyl house film (1) of the present invention having the above composition has prevented the deterioration of the waterproofing properties in accordance with the disadvantages of weatherability and invincibility of the existing film, that is, weathering agent or invincible formulation. Thus, weather resistance was prevented in addition to the invincibility of the conventional thermal film. Therefore, in addition to the invincibility of the existing hot-bed film, the weather resistance and anti-rusting upregulation can be more effective in crop growth.

Looking at the effects of the present invention as described above, first, as a diagram,

Manufacturing Basic Specification of the Invention Total Category Raw material name 3-layer longevity film 3-layer EVA film Three layer far infrared film Longevity floor LLDPE 31 31 31 LDPE 60 60 60 Longevity 7 7 5 to 15 Invincible 2 2 2 to 12 Pesticide longevity 2 to 15 Thermal insulation floor LDPE EVA (VA content) 83 (3%) 83 (6%) 61 (12%) Invincible 12 12 6 to 20 Longevity 5 5 3 to 13 Warming agent 5 to 20 Far Infrared Radiation Additive 2 to 40 Laminated LDPE EVA (VA content) 83 (3%) 83 (12%) 81 (12%) Invincible 13 7 Longevity 4 4 3 to 13 Warming agent Far Infrared Radiation Additive Waterproofing 6 5 to 20 Antibacterial invincible 3 to 15

※※ EVA additive is used for more than 9% va content of raw materials.

It can be displayed as above.

Looking at the change in the degree of blurring, blurring over time as a BLOOMING, transparency measurement method, transparency and BLOOMING in the present invention was measured by visual measurement and HAZE test. The HAZE test is in accordance with KS M3832 (Test Method for Optical Properties of Plastics).

The transparency grades according to transparency are as follows.

A: very transparent

B: transparent state

C: slightly cloudy

D: cloudy

E: very cloudy

After the high temperature and low temperature invincibility persistence evaluation by the invincibility measurement method, after setting the internal water (100) temperature of WATER BATH shown in Fig. 2 to 60 ℃, the external temperature is at room temperature (25C) (internal and external The temperature difference is set to 40 ° C or less) After the film (1) is installed in the hole (200) so that the film (1) is not folded, measure indeterminate visually. In the high temperature long-term sustainability test, the internal water temperature of the AF-TEST HOUSE shown in FIG. 3 is set to 25 ° C., and the upper temperature of the film 1 is set to −5 ° C., and then the film 1 is installed so as not to be folded. Visually measure invincibility (initial low temperature test).

Invincible grade according to invincible performance is as follows.

A: Transparent state where water droplets hardly form

B: water droplets are formed at 25% or less

C: Water droplets are formed at 25-50% or less

D: Water droplets are formed at 50 to 75% or less

E: More than 75% water droplets

In addition, the thermal insulation effect evaluation by the thermal insulation measurement method, the thermal insulation test shown in Figure 5 is installed in the inside of the plastic house 600, the heater is set to 25 ℃ inside each film (1) is installed In order to maintain the temperature at 25 ℃ in each greenhouse, the power consumption of the heater is measured by period.

To evaluate the pesticide resistance and weather resistance by the weather resistance measurement method, the weather resistance in the present invention was measured through the pesticide resistance test apparatus of FIG. 6 and the UV-FADE METER of FIG.

Weathering rating is as follows.

A: Good weather resistance

B: Weatherability is good

C: weather resistance is normal

D: poor weather resistance

E: Weather resistance is very poor

As a method of measuring crop growth, the effect of cultivating crop properties was evaluated.As shown in FIG. 4, a 0.06 mm (thickness) × 450 mm (width) × 100 mm (length) size film was manufactured in the factory, and was located in Gisan-ri, Samgi-myeon, Iksan-si, Jeollabuk-do. Five buildings were installed in the farmer's house 600 to compare the growth conditions of the crops to verify the effect.

In addition, the extent to which the fog in the film 1 disappeared by the test 1 by the anti-rust measurement method is measured over time.

Fog supply condition: Primary (boiler) valve 4 ㎏ / ㎝, Secondary (feed line) valve 3/4 ON Fog is supplied according to the above conditions for the first 30 seconds, and the film (1) on the opposite side where the fog is supplied Observe inside and measure time (T1) until the opposite side comes into view, time (T2) to remove 90% of the supplied fog, and time (T3) to completely remove the fog.

Test 2 measures the amount and amount of fog adsorbed on the film (1) surface over time.

Fog supply condition: Primary (boiler) valve 2㎏ / ㎝, Secondary (supply pipe) valve ON.

The fog is continuously passed into the cylindrical film (1) to measure the adherence to the film (1) surface and the time required for the water droplets to form.

Test 3 measures humidity and temperature changes over time inside the film (1).

Fog supply condition: Primary (boiler) valve 4㎏ / ㎝, secondary (supply pipe) valve OFF.

Measured by the change of internal humidity with time by supplying fog according to the above conditions for the first 30 seconds The above test result is a result of neglecting the error (the amount and temperature of the fog flowing into the film) that can occur during the experiment or the The differences were regarded as very fine and synthesized.

In an experimental embodiment, the far-infrared radiating agent of the present invention contains 3% by weight of a glycerin-based ester compound, 2% by weight of a sorbitan-based ester compound, 1.0% by weight of a stabilizer, 30% by weight of far-infrared radiation, and 64% by weight of a resin. To prepare a far-infrared radiation.

The three-layer EVA film, the three-layer longevity film, and the three-layer far-infrared radiation film of Table 1 were prepared by using the prepared far-infrared radiator and invincible agent, anti-corrosive longevity agent, pesticide-resistant longevity agent, and warming agent. 0.06 mm)

In addition, when analyzing the function of each film as a diagram as follows.

Function Analysis Table by Film Test Items Classification 3-layer longevity film 3-layer EVA film Three layer far infrared film Transparency measurement over time Blooming B B A Haze 9.9 9.5 9.3 Invincibility Measurement Initial low temperature B A A Long-term persistence C B A Warmth Thermal effect 82 W 75 W 69 W Weather resistance Weather and pesticide resistance C B A Ministry of Defense Fog removal effect 2.5 hours 2 hours 1.5 hours Antimicrobial activity Antimicrobial effect No reaction No reaction Good

As described above, the present invention shortens the growth period of crops, increases sunlight transmittance by eliminating fog and supplementing invincibility, and weather resistance against ultraviolet rays, as well as strong weather resistance against pesticides or sulfur itself, and excellent chemical resistance. The invention is to be able to work effectively on crop growth, such as to increase the life of the film by manufacturing the agent.

Claims (4)

As a combination of each functional additive and resin which are added to the longevity layer 10 of the multilayer film (1) of the agricultural vinyl house comprised of a multilayer film, the thermal insulation layer 20 of a middle layer, and the unlayered layer 30 of an inner layer, Linear low density polyethylene (LLDPE) containing 0.1 to 10% by weight of a sunscreen (UV agent) and 0.1 to 15% by weight of an uninhibited agent and an ethylene-vinyl acetate copolymer having a content of 20% by weight or less of low density polyethylene or vinyl acetate The longevity layer 10 is composed of 1 to 5% by weight of silica, alumina or a flexible compound thereof, and 0.1 to 10% by weight of a sunscreen (UV agent) and an infrared ray additive 0.1-40 An insulating layer 20 composed of an ethylene-based resin containing 20% by weight or less of an ethylene-based resin or a vinyl acetate content containing weight% and 0.1-15% by weight of an anti-foaming agent or an anti-foaming agent, and is referred to as a no-deposition layer 30. In another layer, a low density polyethylene or vinyl acetate containing 0.1 to 5% by weight of a sunscreen agent and 0.1 to 10% by weight of a rustproof agent consisting of a fluorine compound composed of 8-30 molecules of fluorine and 0.1 to 10% by weight of an antibacterial invincible agent A vinyl acetate copolymer having a content of 20% by weight or less, wherein the longevity layer, the thermal insulation layer, and the non-layered layer are 15 to 25; 50 to 70; A method for manufacturing a multilayer film of an agricultural vinyl house, characterized in that it has far-infrared radiation and antibacterial function at a ratio of 15 to 25. The method of claim 1, Far-infrared radiation layer is a thermal insulation layer (20), a non-layered layer (30), the method of producing a multilayer film of an agricultural vinyl house comprising a composition consisting of 90 to 95% of the emissivity of the inorganic compound. The method of claim 1, The particle size of the far-infrared radiator is a manufacturing method of a multilayer film of an agricultural vinyl house, including the one produced in the size of 0.5 ~ 5㎛. The method of claim 1, The blending ratio of the far-infrared waterproof inorganic compound is a method for producing a multilayer film of an agricultural vinyl house, comprising adding 2 to 40% by weight to the insulating layer (20).