KR102141338B1 - Light shielding film f or both lagging for cultivating ginseng - Google Patents

Abstract

The present invention relates to a light-shielding film combined with an insulation cover for ginseng farming, and a manufacturing method thereof. The light-shielding film combined with an insulation cover for ginseng farming comprises: an aluminum foil layer (10); adhesive layers (20, 70) applied to both upper and lower surfaces of the aluminum foil layer (10); a polyester film layer (30) adhering to the adhesive layer (20); an adhesive layer (40) applied to the polyester film layer (30); a polyethylene extrusion coating layer (50) and an ultraviolet (UV) blocking polyethylene film layer (60) bonded to the adhesive layer (40) in a sandwich manner by a T-die extrusion operation; and a polyethylene extrusion coating layer (80) and a polyethylene sandbag layer (90) adhering to the adhesive layer (70) in the sandwich manner by the T-die extrusion operation. Accordingly, efficiency of the insulation cover at night and shading efficiency during the day can be remarkably increased at the same time and thus, the present invention can optimize a cultivation environment suitable for the growth of ginseng plants. A bonding surface is not easily peeled off such that the aluminum foil is not easily oxidized and corroded by physical impact or rain water when it is rainy or snowy such that the present invention has a long-term and stable usage lifespan that is increased from 2-3 years in a conventional case to 3-5 years. In addition, the present invention has a simple structure, thereby being manufactured by a simple manufacturing method, and thus has excellent economic feasibility due to lowered prices of a product.

Description

Light shielding film for ginseng cultivation and a method for manufacturing the same and its manufacturing method{Light shielding film f or both lagging for cultivating ginseng}

The present invention relates to a light-shielding film used as a thermal insulation cover used in cultivation of ginseng, more specifically, a polyethylene film and a UV-reinforced polyethylene coating film by T-die work on a polyethylene terephthalate film bonded with an aluminum foil and a polyethylene terephthalate film as an adhesive. Bonding by sandwich method, and by using a T-die on aluminum foil, a polyethylene film and a polyethylene bag are bonded by sandwich method to produce a light-shielding film. With a simple structure, material cost is reduced and production is easy. The present invention relates to a light shielding film for a ginseng cultivation and a method for manufacturing the same, which can optimize the environment suitable for the growth of ginseng by prominently improving the heat shield efficiency and the light shielding efficiency of the daytime.

In general, ginseng is a perennial medicinal plant that has excellent effects on the human body and is a special crop that is widely used in herbal medicines. In order to cultivate ginseng, it is necessary to have suitable climate conditions along with fertile land.

In particular, ginseng is a semi-acoustic plant that directly rains, dislikes direct sunlight, and likes to dry, but also has a dislike of drought.In particular, to grow ginseng effectively as a crop that hates flooding and excessive sunlight, Cultivation conditions for drying and keeping the temperature constant must be provided.

Therefore, on the existing ginseng field, a light-shielding membrane that blocks direct sunlight is installed, and it is also possible to see that ginseng is planted on the top of the bank to prevent flooding of the ginseng.

The existing ginseng field cover is stacked in order by using a shading net, rice straw, and vinyl, so when the cover gets wet, the moisture is absorbed into the rice straw and the ventilation is not good due to the weakening of the water absorption capacity of the vinyl, and it is wet for a considerable time. As it was maintained, there was a hassle that requires frequent replacement of the cover due to the fast crested corrosion, and the moisture generated by the water was not transmitted to the inside of the cover with ginseng, which could not promote the growth of ginseng. In this case, there was a problem in that the wind friction force in contact with the cover was stronger and the cover was severely shaken and could be peeled off.

In addition, the cover used in the ginseng field is very long, and the structure of the cover, which is currently mainly used, is divided into light-shielding net, rice straw, and vinyl, so it is difficult to cover the cover. After stacking the rice straws made integrally on the top of the vinyl after laying them, the shading nets were stacked again to support them to the frame, and the cover-covering work was completed. To do the cover-covering work, a person followed the frame several times. There is a drawback that this work takes a lot of manpower and time, and it is difficult to procure rice straws.

In order to improve the problems of the conventional ginseng cultivation cover, a non-woven fabric on the surface, and a colorless polyethylene ethlene flat yarn fabric on the back, made of synthetic resin adhesive layer, respectively, centered on an aluminum foil designed to block rainwater. There is a thing adhered to the body, wherein the polyethylene flat yarn fabric is a fabric in which the polyethylene flat yarn produced by cutting the polyethylene film slightly is flat, and the cover has a light reflectance of its surface portion, that is, the nonwoven fabric portion is weak. As low as 72%, the light reflectance of the back portion, that is, the colorless polyethylene flat yarn fabric portion, was about 74%. The sunlight irradiated on the nonwoven fabric of the surface portion was partially absorbed by the nonwoven layer and the rest reached the aluminum foil. Then it is reflected again, and at this time, it causes diffuse reflection due to the myriad of fiber yarns constituting the nonwoven fabric.

Therefore, a part of the reflected sunlight is reflected to the atmosphere, and a part of the reflected sunlight is reflected on the back side of the cover installed in front, that is, after being incident on the polyethylene flat yarn fabric, and then reflected and irradiated to the ginseng field.

The known ginseng cultivation cover is an excess of approximately 20% of the amount of sunlight that is finally irradiated to ginseng, and eventually, excessive light is transmitted through the ginseng cultivation and irradiated to the ginseng plant, so that optimum cultivation conditions cannot be established. There was a problem.

Here, the optimal condition of the ginseng cultivation refers to a state in which the amount of sunlight irradiated becomes about 10% or more and 15% or less in a state in which the minimum amount of water has penetrated the ground. It will be cultivated under.

As developed to solve this problem, the utility model registration No. 0237027 "cover of ginseng cultivation" is disclosed in the utility model publication.

The utility model registration No. 0237027 "cover for ginseng cultivation" in forming a cover for ginseng cultivation, as shown in FIG. 1, absorbs ultraviolet rays to block sunlight and absorb ultraviolet rays under a black shading network 101 that blocks sunlight A black nonwoven fabric containing 102 is placed, and an aluminum foil 103 is provided on the lower portion of the black nonwoven fabric 102 to block rainwater, and a white nonwoven fabric (blocking light) is also provided on the lower portion of the aluminum foil 103 ( 104), and the white light-blocking network 105, which is adjusted so that the amount of light irradiated through ginseng through the white non-woven fabric 104 can be about 10%, is placed on the bottom of the white non-woven fabric 104 to integrate them. It was made by sewing with. However, the "Ginseng cultivation cover" of Utility Model Registration No. 0237027 having the above-described configuration is composed of five materials: a black shading network 101, a black nonwoven fabric 102, an aluminum foil 103, a white nonwoven fabric 104, and a white shading network 105. Since it forms a layered structure and increases the price of the product according to the material cost, there is a problem in that it is not only economically burdensome to employ in ginseng cultivation, but also has a problem that durability due to corrosion of the non-woven fabric is weak and cannot be used stably for a long time. In addition, there was a disadvantage that the light transmittance was very low (below 10%), and the temperature was lowered.

In addition, Utility Model Registration No. 0344760, "shielding film for ginseng cultivation" has also been developed and disclosed in the Utility Model Publication (see Patent Document 2). The utility model registration No. 0344760 "shielding film for ginseng cultivation" is woven with a black synthetic resin film yarn (絲) as shown in Figure 2 to produce a light-shielding film (A) with a predetermined width and length, and the light-shielding film (A) In the light-shielding film for cultivation of ginseng installed on the structure of the ginseng field to be stacked in two layers, a plurality of silver foils (C) formed in a narrow band shape are repeatedly weaved by synthetic resin yarns adjacent to each other to be composed of silver foils (C). A reflective light-shielding film (B) is formed, and the reflective light-shielding film (B) is constructed by weaving so as to be laminated in two layers on a light-shielding film (A) woven from black synthetic resin film yarns. However, the utility model registration No. 0344760 "shielding film for ginseng cultivation" is similar to the utility model described above, so that the reflective light-shielding film (B) is laminated in two layers on the light-shielding film (A), so that the light-shielding film (A) and the double-shielding light-shielding film (B) are stacked. Due to an increase in manufacturing costs such as an increase in material costs and labor costs required for manufacturing, the price of the product is unsuitably expensive for use in cultivation of ginseng. In addition, by stacking the light-shielding films (A, B) in two layers, the light-shielding effect was obtained, but the light transmittance was less than 10%, so the insulation effect was low for actual use, and when used alone, growth disorders of ginseng young plants were frequently found.

The developed ginseng cultivation light shielding film and a method for manufacturing the same are developed by the present inventors and disclosed in Korean Patent Publication No. 2013-0033741 (see Patent Document 3).

In the patent publication No. 2013-0033741, a "light shielding film for a ginseng cultivation and a method for manufacturing the same" and a method for manufacturing the same, as shown in FIG. 3, warp the polyolefin-based strip or polyester-based strip and warp the polyolefin-based strip or polyester-based strip. A weaving fabric (10) made by weaving so that the weft and warp yarns cross each other up and down; An adhesive layer 20 formed by being applied to one side of the woven fabric 10; An aluminum film 30 adhered to the adhesive layer 20; Polyethylene (PE) is coated on the aluminum film (30) to form a polyethylene coating film (40), which reduces the cost of the product by reducing the material cost with simple structure and easy manufacturing. It is possible to provide an environment suitable for the growth of ginseng due to the excellent efficiency of the thermal insulation cover at night and the shading efficiency at daytime.

However, in the patent publication No. 2013-0033741, the light shielding film for a ginseng cultivation and a method for manufacturing the same, said polyethylene is physically excellent in durability by preventing oxidation of an aluminum film. Accordingly, the polyethylene (PE) of the point crimping part is easily peeled off or easily penetrates the aluminum film in the point crimping part as rainwater or snow melts, and it is easily oxidized and corroded by forming a water bag that partially sags the aluminum film. The problem of not being durable was pointed out.

1: Utility Model Registration No. 0237027 Utility Model Registration, 2: Utility Model Registration No. 0344760 Registration Utility Model Publication, 3: Patent publication No. 2013-0033741

The present invention was made in consideration of the above-described circumstances, and invented to solve various defects and problems caused by the conventional ginseng cultivation light-shielding film, the object of which is to provide a polyethylene terephthalate film with an aluminum foil and a polyethylene terephthalate film adhered with an adhesive. By die-bonding the polyethylene film and the UV-reinforced polyethylene coating film in a sandwich method, and by using a T-die work on the aluminum foil, the polyethylene film and the polyethylene mat are bonded in a sandwich method to produce a light-shielding film. It is to provide a light shielding film for a ginseng cultivation and a light shielding film for ginseng cultivation that can optimize the cultivation environment suitable for the growth of ginseng plants by at the same time prominently improving the efficiency of the night heat shield and the light shielding efficiency of the day while lowering the price of the product. .

Another object of the present invention is to bond the polyethylene film and the UV-reinforced polyethylene coating film in a sandwich manner to the polyethylene terephthalate film to which the aluminum foil and the polyethylene terephthalate film are adhered with an adhesive, and the aluminum foil is polyethylene in the T die operation. By forming the light-shielding film by sandwiching the film and the polyethylene mat in a sandwich method, the joint surface is not easily peeled off, so it is not easy to oxidative corrosion due to precipitation when it is physically exposed to aluminum foil or rain or winter snow. Therefore, it can be used stably for a long time. It is to provide a light-shielding film for a ginseng cultivation and a light-shielding film that can be used for 2 to 3 years or more and 5 years or less, and a method for manufacturing the same.

Another object of the present invention is to provide a light-shielding film for a ginseng cultivation insulating cover and excellent manufacturing efficiency, which is excellent in economic efficiency due to a simple structure and a simple manufacturing method.

In order to achieve the above object, the present invention, the ginseng cultivation insulating cover as well as the light-shielding film aluminum foil layer (10) and; Adhesive layers 20 and 70 applied to both sides of the aluminum foil layer 10; A polyester film layer 30 adhered to the adhesive layer 20; An adhesive layer 40 applied on the polyester film layer 30; A polyethylene extrusion coating layer 50 and an ultraviolet (UV) blocking polyethylene film layer 60 bonded to the adhesive layer 40 in a sandwich manner by T die extrusion; The adhesive layer 70 is characterized in that it consists of a polyethylene extrusion coating layer 80 and a polyethylene mating layer 90, which are bonded in a sandwich manner by a T-die extrusion operation.

In the present invention, a polyethylene film and a UV-reinforced polyethylene coating film are bonded by a T-die operation to a polyester film bonded with an aluminum foil and a polyethylene terephthalate film as an adhesive, and a polyethylene film and a polyethylene mat are applied to the aluminum foil by a T-die operation. It is a cultivation suitable for the growth of ginseng plants by excellently improving the efficiency of the night's heat insulation cover and the day's light-shielding efficiency at the same time while reducing the cost of the product with a simple structure and making the light-shielding film by bonding by sandwich method. The environment can be optimized, and the bonding surface is not easily peeled off, so it is not easy to oxidative corrosion due to precipitation when physically raining or raining or snowing in the aluminum foil. Not only can it be used within 3 to 3 years or more than 5 years, but the structure is simple, so it can be manufactured with a simple manufacturing method.

1 is an exploded perspective view showing the configuration of a conventional ginseng cultivation cover,
Figure 2 is an exploded perspective view showing a conventional light-shielding film for ginseng cultivation,
Figure 3 is a cross-sectional view of a conventional shading film combined with a thermal insulation cover for ginseng cultivation,
Figure 4 is a perspective view of a light-shielding membrane as a thermal insulation cover for ginseng cultivation of the present invention,
Figure 5a to 5f is a cross-sectional view of the light-shielding film formed by the manufacturing process of the present invention ginseng cultivation heat-insulating cover as well as the light-shielding film,
Figure 6 is a state of use of the present invention ginseng cultivation insulation cover as well as the shading film,
7 is a process flow chart for manufacturing a light shielding film for a ginseng cultivation in accordance with the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention ginseng cultivation insulating cover as well as the light-shielding film and its manufacturing method.

Figure 4 is a perspective view of the present invention ginseng cultivation insulation cover and light-shielding film, Figures 5a to 5f is a cross-sectional view of the light-shielding film formed by the manufacturing process of the present invention ginseng cultivation heat-shielding light-shielding film, Figure 6 is the present invention ginseng cultivation insulation cover and light-shielding film State of use, Figure 7 is a process flow chart for producing a light-shielding film for ginseng cultivation in combination with the present invention, the invention ginseng cultivation for the ginseng cultivation light-shielding film is an aluminum foil layer 10; Adhesive layers 20 and 70 applied to both sides of the aluminum foil layer 10; A polyester film layer 30 adhered to the adhesive layer 20; An adhesive layer 40 applied on the polyester film layer 30; A polyethylene extrusion coating layer 50 and an ultraviolet (UV) blocking polyethylene film layer 60 bonded to the adhesive layer 40 in a sandwich manner by T die extrusion; The adhesive layer 70 is composed of a polyethylene extrusion coating layer 80 and a polyethylene mating layer 90, which are bonded in a sandwich manner by a T-die extrusion operation.

The preferred thickness of the aluminum foil layer 10 is 5 µm to 9 µm, and more preferably 6 µm to 7 µm.

When the thickness of the aluminum foil layer 10 is thinner than 5 μm, the aluminum foil layer 10 in the process of laminating the polyester film layer 30 or the polyethylene extrusion coating layer 50 and the ultraviolet (UV) blocking polyethylene film layer 60 When this yield is easily broken and the thickness of the aluminum foil layer 10 is thicker than 9 μm, the weight of the product becomes heavy and the price increases, which is not preferable.

As the adhesive layer 20, 40, 70, any one of two-component polyurethane, polyester, and acrylic can be used.

The preferred thickness of the polyester film layer 30 is 11 µm to 13 µm. When the thickness of the polyester film layer 30 is thinner than 11 μm, a hole formed by breaking the polyester film layer 30 in the process of laminating the polyethylene extrusion coating layer 50 and the ultraviolet (UV) blocking polyethylene film layer 60 As rainwater flows into and corrodes the aluminum foil layer 10, and the thickness of the polyester film layer 30 is thicker than 13 μm, the weight of the product becomes heavy and the price increases, which is not preferable.

In addition, the preferred thickness of the polyethylene extrusion coating layer 50 is 18 µm to 22 µm, and the preferred thickness of the ultraviolet (UV) blocking polyethylene film layer 60 is 28 µm to 38 µm.

When the combined thickness of the polyethylene extrusion coating layer 50 and the ultraviolet (UV) blocking polyethylene film layer 60 is thinner than 40 μm, ultraviolet (UV) light is generated by tension during lamination with the polyester film layer 30. As the blocking polyethylene film layer 60 is increased, wrinkles are generated in the laminated product as the tension applied during lamination during aging in the aging room is restored, and the thickness of the polyethylene extrusion coating layer 50 and the ultraviolet (UV) blocking polyethylene film layer 60 is restored. If the combined thickness is thicker than 60 µm, the product becomes heavy and the price increases due to the increase in the material, which is undesirable.

In addition, the ultraviolet (UV) blocking polyethylene film layer 60 is composed of 96 to 99.5% by weight of polyethylene and 0.5 to 3% by weight of a UV blocking agent, and the UV blocking agent is selected from UV-reinforced resins, UV-reinforced silicones, and UV-reinforced epoxy. Either can be used.

In the composition of the ultraviolet (UV) blocking polyethylene film layer 60, when the UV blocking agent is less than 0.5% by weight, the film is damaged by UV, which is undesirable. When the UV blocking agent is more than 3% by weight, the price of the product increases. It is not desirable.

In addition, the preferred thickness of the polyethylene extrusion coating layer 80 is 15㎛ to 20㎛. The preferred thickness of the polyethylene backing layer 90 is 20 µm to 25 µm.

If the combined thickness of the polyethylene extrusion coating layer 80 and the polyethylene mating layer 90 is thinner than 35 μm, the level difference of the polyethylene mating layer 90 is not overcome, so perfect adhesion cannot be achieved, and the polyethylene extrusion coating layer If the thickness of the combined thickness of the 80 and the polyethylene base layer 90 is 45 µm thick, the product becomes heavy and the price increases due to the increase in the material, which is not preferable.

On the other hand, in the present invention, a method of manufacturing a light shielding film for a ginseng cultivation and a heat-insulating cover is performed by passing an aluminum foil layer 10 having a thickness of 6 μm to 7 μm through an adhesive through a press roll to apply an adhesive layer 20 to the aluminum foil layer 10. Forming a first adhesive application step (S1 process); The adhesive layer 20 and the polyester film layer 30 of 11 μm to 13 μm are adhered by passing through a press roll and then passed through a duct through a guide roll to form a polyester film layer cured at 90° C. to 110° C. A process (S2 process); After supplying the aluminum foil layer 10 on which the polyester film layer 30 is formed as a first paper and applying a solution of a mixture of an adhesive and a solvent, the solvent is dried at 40 to 80° C. in a drying chamber to form an adhesive layer 40 A second adhesive application process (S3 process) to form; The adhesive layer 40 is formed by extrusion coating a polyethylene extrusion coating layer 50 through a T die on the formed polyester film layer 30, while supplying an ultraviolet (UV) blocking polyethylene film layer 60 to the second grade paper sandwich. Laminate the 18㎛ to 22㎛ thick polyethylene extrusion coating layer 50 and 28㎛ to 38㎛ thick ultraviolet (UV) blocking polyethylene film layer 60, and store them in the aging room for 48 hours for the adhesive layer 40 Polyethylene extrusion coating layer and UV (UV) blocking polyethylene film layer forming process (S4 process) for curing; The aluminum foil layer 10 on which the ultraviolet (UV) blocking polyethylene film layer 60 is formed is supplied as a first-grade paper, a solution of a mixture of an adhesive and a solvent is applied, and then the solvent is dried at 40 to 80° C. in a drying chamber to obtain an adhesive. A third adhesive coating process (S5 process) forming the layer 70; The adhesive layer 70 is formed on the aluminum foil layer 10 by extruding and coating a polyethylene extrusion coating layer 80 through a T-die while supplying a polyethylene bag to the secondary paper in a sandwich method of 15㎛ to 20㎛ thickness Polyethylene extrusion coating layer 80 and a polyethylene extrusion coating layer and a polyethylene extrusion coating layer forming process for curing the adhesive layer 70 by laminating the polyethylene mating layer 90 having a thickness of 20 µm to 25 µm for 48 hours in a aging room (S6) Process).

Next, the ginseng plant field as shown in FIG. 7 shows the light-shielding film (P) for the insulation cover for ginseng cultivation of the present invention manufactured after the actual production of the light-shielding film for both the heat-insulating cover for ginseng cultivation of the present invention configured as described above. By installing on the roof (Y) installed in (X), sunlight and heat irradiated to the ginseng plant field (X) are blocked in the daytime, and it acts as a thermal insulation cover at night.

At this time, in order to prevent sagging of the ginseng cultivation heat-insulating cover and light-shielding film (P) sag, it is preferable to cross-install the support such as bamboo at a certain place at regular intervals on the lower surface of the light-shielding film (P) for ginseng cultivation, and the present invention. When the ginseng cultivation heat-insulating cover and light-shielding film (P) are installed to be movable up and down, the ginseng cultivation heat-insulating cover and light-shielding film (P) are moved downward, and during the day, the ginseng cultivation heat-insulating cover and light-shielding film (P) are moved upward. By doing so, it is possible to further improve the efficiency of the night heat shield and the shading efficiency of the day.

Example 1

In the present invention, a light shielding film for a ginseng cultivation and a heat shield for ginseng cultivation was actually fabricated by the process shown in FIG. 7 and the performance was examined.

First, in the first adhesive application process (S1 process), the aluminum foil layer 10 having a thickness of 6 μm is passed through an adhesive through a press roll and is formed by applying the adhesive layer 20 to the aluminum foil layer 10 (FIG. 5A ). ), In the process of forming the polyester film layer (S2 process), the aluminum foil layer 10 on which the adhesive layer 20 is formed and the polyester film layer 30 of 12 μm thickness are adhered by passing through a press roll, and then the guide roll is attached. After passing through the duct and cured at 100 ℃ (Fig. 5b).

Subsequently, in the second adhesive application process (S3 process), the aluminum foil layer 10 on which the polyester film layer 30 is formed is passed through the adhesive through a press roll to apply the adhesive layer 40 to the polyester film layer 30. To form (Fig. 5c),

By extruding the polyethylene extrusion coating layer 50 through a T die on the polyester film layer 30 on which the adhesive layer 40 is formed in the polyethylene extrusion coating layer and ultraviolet (UV) blocking polyethylene film layer forming process (S4 process) While forming, by supplying the ultraviolet (UV) blocking polyethylene film layer 60 to the secondary paper, a 20 µm thick polyethylene extrusion coating layer 50 and a 30 µm thick ultraviolet (UV) blocking polyethylene film layer 60 are laminated in a sandwich manner. After curing in the aging room for 48 hours, the adhesive layer 40 was cured (FIG. 5D).

Next, in the third adhesive application process (S5 process), the aluminum foil layer 10 having the ultraviolet (UV) blocking polyethylene film layer 60 is supplied to the first feeding paper, the solution mixed with the adhesive and the solvent is applied, and then the drying chamber The solvent was dried at 40 to 80° C. to form an adhesive layer 70 (FIG. 5E).

As the final process, the polyethylene extrusion coating layer 80 is formed by extrusion coating the polyethylene extrusion coating layer 80 through the T die on the aluminum foil layer 10 on which the adhesive layer 70 is formed in the polyethylene extrusion coating layer and the polyethylene mating layer formation process (S5 process) 2 After feeding the polyethylene bag to the paper feed, laminating the 15㎛ to 20㎛ thick polyethylene extrusion coating layer 80 and the 20㎛ to 25㎛ thick polyethylene bag layer 90 in a sandwich method, and storing it in the aging room for 48 hours for the adhesive layer (70) was cured (FIG. 5F).

A light-shielding membrane for a ginseng cultivation as well as a heat-insulating cover for ginseng cultivation prepared as described above was installed and used in a ginseng field as shown in FIG. 6 to examine its performance.

As a result of the review, the water does not penetrate into the aluminum foil layer 10 inside the light-shielding film while the rain or snow melts, so that the partial water pocket formed by the aluminum foil layer 10 partially falling off from the polyester film layer 30 by water It was not formed, and as a result, the aluminum foil layer 10 was oxidized and did not corrode, so that it could be used continuously for 4 to 5 years, and the amount of sunlight administered to the ginseng plant was 10% or more and 15% or less, so that the cultivation of the ginseng plant It was confirmed that it can maintain a suitable state.

So far, the present invention has been described as a preferred embodiment, but the present invention is not limited to this and can be carried out by variously changing within a range that does not depart from the gist of the invention.

10: aluminum foil layer 20, 40, 70: adhesive layer
30: polyester film layer 50, 80: polyethylene extrusion coating layer
60: ultraviolet (UV) blocking polyethylene film layer 90: polyethylene base layer
P: Ginseng cultivation insulation cover and shading film X: Ginseng plant field
Y: roof

Claims (2)

A first adhesive application process (S1 process) for forming an aluminum foil layer 10 having a thickness of 6 μm to 7 μm through an adhesive through a press roll and applying the adhesive layer 20 to the aluminum foil layer 10; The adhesive layer 20 and the polyester film layer 30 of 11 μm to 13 μm are adhered by passing through a press roll and then passed through a duct through a guide roll to form a polyester film layer cured at 90° C. to 110° C. A process (S2 process); After supplying the aluminum foil layer 10 on which the polyester film layer 30 is formed as a first paper and applying a solution of a mixture of an adhesive and a solvent, the solvent is dried at 40 to 80° C. in a drying chamber to form an adhesive layer 40 A second adhesive application process (S3 process) to form; The adhesive layer 40 is formed by extrusion coating a polyethylene extrusion coating layer 50 through a T die on the formed polyester film layer 30, while supplying an ultraviolet (UV) blocking polyethylene film layer 60 to the second grade paper sandwich. Laminate the 18㎛ to 22㎛ thick polyethylene extrusion coating layer 50 and 28㎛ to 38㎛ thick ultraviolet (UV) blocking polyethylene film layer 60, and store them in the aging room for 48 hours for the adhesive layer 40 Polyethylene extrusion coating layer and UV (UV) blocking polyethylene film layer forming process (S4 process) for curing; The aluminum foil layer 10 on which the ultraviolet (UV) blocking polyethylene film layer 60 is formed is supplied as a first-grade paper, a solution of a mixture of an adhesive and a solvent is applied, and then the solvent is dried at 40 to 80° C. in a drying chamber to obtain an adhesive. A third adhesive coating process (S5 process) forming the layer 70; The adhesive layer 70 is formed on the aluminum foil layer 10 by extruding and coating a polyethylene extrusion coating layer 80 through a T-die while supplying a polyethylene bag to the secondary paper in a sandwich method of 15㎛ to 20㎛ thickness Polyethylene extrusion coating layer 80 and a polyethylene extrusion coating layer and a polyethylene extrusion coating layer forming process for curing the adhesive layer 70 by laminating the polyethylene mating layer 90 having a thickness of 20 µm to 25 µm for 48 hours in a aging room (S6) Method of manufacturing a light-shielding film for both the insulation cover for ginseng cultivation comprising the process). A light-shielding membrane used as a heat insulating cover for growing ginseng prepared by the method of claim 1.

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