KR101277248B1 - Reflecting film having holes for agriculture - Google Patents

Reflecting film having holes for agriculture Download PDF

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Publication number
KR101277248B1
KR101277248B1 KR1020130044827A KR20130044827A KR101277248B1 KR 101277248 B1 KR101277248 B1 KR 101277248B1 KR 1020130044827 A KR1020130044827 A KR 1020130044827A KR 20130044827 A KR20130044827 A KR 20130044827A KR 101277248 B1 KR101277248 B1 KR 101277248B1
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film
reflective film
cpp
opp
polypropylene
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KR1020130044827A
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Korean (ko)
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박재홍
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박재홍
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G13/00—Protecting plants
    • A01G13/02—Protective coverings for plants; Coverings for the ground; Devices for laying-out or removing coverings
    • A01G13/0256—Ground coverings
    • A01G13/0268—Mats or sheets, e.g. nets or fabrics
    • A01G13/0275—Films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Laminated Bodies (AREA)
  • Protection Of Plants (AREA)

Abstract

PURPOSE: A perforated reflection film is provided to prevent the corrosion of deposited aluminum, lowering the reflective efficiency rate and allow the perforated reflection film to have durability, transparency, tensile strength and heat resistance thanks to the interlayer adhesion strength. CONSTITUTION: A perforated reflection film(R) comprises an aluminum foil(2) deposited in an OPP(Oriented Polypropylene)film(1) and a CPP(Casting Polypropylene) film(3) on the upper layer of the OPP film. A drain hole(4) is formed in the perforated reflection film by drilling with a core drill with the hole arranged in the same direction and the same size. The diameter of the drain hole is 5-8mm and a width gap and the longitudinal gap is 20-30cm and 30-60cm respectively. A CPP(Casting Polypropylene) film is layered in the aluminum foil by an adhesive material or heat seal. The perforated reflection film rolled in a roll of 10-20 diameters and 1-2m pipe in width is punched to a thickness of 3-10cm. The perforated reflection film is 30-35μm in thickness. [Reference numerals] (AA) Paper tube

Description

Agricultural Perforated Reflective Film {REFLECTING FILM HAVING HOLES FOR AGRICULTURE}

The present invention relates to a porous reflective film for farming, and more particularly, by forming a drain hole that is uniformly arranged in the width and length direction by drilling with a core drill in the roll-shaped reflective film, the sunlight from the ground when cultivating fruit trees or flowers By reflecting light to the rear of the plant to make light well activating the growth of fruits and flowers, promotes even coloring, prevents water drip on the rainy day, and smoothly supplies moisture to the plant during drought, The present invention relates to a farming pore reflecting film having an effect of reducing weed generation.

As is well known, during the maturation period of the cultivated fruit in the cultivation of fruits and flowers, it is necessary to create an environment where the fruit can absorb the direct sunlight to have a better effect on the improvement of sweetness and coloring. If the light environment is poor, the quality of the fruits or flowers harvested will be deteriorated. Therefore, conventionally, farmers growing crops, such as orchards, have a reflective film on the ground to reflect light from the bottom of the crop as a method of growing high quality crops. Films are commercially available.

In other words, in most fruit or flower farms, the light emitted from the top does not directly reach the lower side of the fruit, so the fruits or flowers obscured by the branches or leaves of the crop cannot be irradiated. To prevent the phenomenon that a big difference occurs in the back and the quality of the product is not uniform, the reflective film is coated on the surface or the bottom surface during the maturity of the fruit, so that the light irradiated from the top is reflected on the reflective film and then the lower part of the crop By allowing light to be irradiated to the side or parts covered by branches or leaves, it is intended to enhance the sweetness and coloring effect of fruits and flowers.

However, most commercially available reflective films use a deposition film in which aluminum (Al) is deposited on a film fabric made of synthetic resin such as polypropylene (PP) or polyester (PET), and polyethylene ( It is used by coating synthetic resin such as PE) or by bonding nonwoven fabric.

The conventional reflective film configured as described above is used on the lower soil of the crop, and in general, a polypropylene (PP) film or a polyester (PET) film is excellent in light transmittance but due to the property of tearing in terms of physical properties Since the deposited aluminum deposition surface is damaged to reduce the light reflection effect, when the PE film is bonded to the aluminum deposition surface of the PET film in order to prevent this, the melting point of the PET film and the melting point of the PE film is more than 100 ℃ difference Therefore, the PET film on which aluminum is deposited is not firmly bonded to the PE film, so that the interface separation phenomenon of the bonding surface is likely to occur, and thus the reflection efficiency is lowered.

As described above, most of the conventional commercially available reflective films are made of PE film and aluminum deposited films such as CPP (Casting polypropylene) or OPP (Oriented polypropylene), PET (Polyethylene terephthalate), which are manufactured by extruding polypropylene as a raw material. It is used by laminating or bonding a nonwoven fabric to the vapor deposition film. In addition, a reflective film manufactured by coating a PVC melt on the deposition film is also used.

Recently, there have been attempts to solve the above problems, Korean Patent Publication No. 10-1229925 (Registration Date: 2013. 01. 30) in the CPP film (1) where the aluminum layer (2) is deposited HDPE film ( 3) by forming a drainage hole (4) in the reflective film (A) bonded by the laser drilling method and at the same time arranged in a manner to arrange the drainage holes 4 having a diameter of 1cm uniformly in the width direction and the longitudinal direction. An agricultural reflective film is disclosed, and in Korean Patent Publication No. 10-1229926 (Registration Date: Jan. 30, 2013), aluminum is deposited on one film 1 selected from an OPP film or a CPP film. Disclosed is an agricultural reflective film characterized by bonding the deposition film (A) and the base film (B) made of HDPE film, but these prior arts are all high-density synthetic resins of different kinds on a PP film on which aluminum is deposited. Polyethyl (HDPE) bonding the film by not only the severe difficulties in the bonding process between the film is difficult to burn or the reproduction process at the end of its life. In addition, the reflective film is added to a separate process such as laser drilling method to form a drain hole to form a drain hole having an excessively large diameter, there is a fear of weed generation through the drain hole.

In addition, the scattered light reflecting film known in the Republic of Korea Patent Publication No. 10-2007-0031518 (published: March 20, 2007) is a polypropylene film, polyester film or other synthetic resin 0.01 Planting land for cultivating crops by depositing aluminum on the film fabric 10 having a thickness of 0.2 mm to 0.2 mm and forming irregularities projections 13 of various shapes on the surface of the reflective film 1 coated with synthetic resin on the deposition surface. It is a technology that spreads sunlight to the bottom of crops by spreading it on the floor.In Korea Patent Publication No. 10-0523476 (Registration Date: Oct. 17, 2005), Al is applied to unstretched film such as CPP or stretched film such as OPP or PP. It is made by depositing and coating the molten PVC composite on the upper surface of the Al deposition layer, and the technology related to the fVC reflective sheet paper used for over-use, etc., but these are all described As in the prior art as described above, it is difficult to incinerate or regenerate the film bonding process by laminating by using different kinds of synthetic resins, and it is difficult to incinerate or regenerate even when discarded. It doesn't provide the technology.

Accordingly, the present inventors overcome the difficulties in the manufacturing process of conventionally bonding with heterogeneous synthetic resin by bonding CPP (Casting polypropylene) film to OPP (Oriented polypropylene) film on which aluminum is deposited, and the quality and durability of the reflective film. In order to improve and recycle the waste, and to drill the core hole from the surface of the roll-shaped reflective film to form an appropriate size drainage hole, it is easy to drill the drainage hole and the drainage required for the plant growth environment, as well as additionally The present invention has been completed by focusing on forming fine unevenness on one surface of a reflective film to lower light transmittance and improving reflectivity, thereby obtaining a farming porous reflective film that can prevent soil evaporation and weed generation to the maximum.

Republic of Korea Patent Publication No. 10-1229925 (Registration Date: 2013. 01. 30) Republic of Korea Patent Publication No. 10-1229926 (Registration Date: 2013. 01. 30) Republic of Korea Patent Publication No. 10-2007-0031518 (published: 2007. 03. 20) Republic of Korea Patent Publication No. 10-0523476 (Registration Date: October 17, 2005)

An object of the present invention, by using an aluminum film deposited OPP (Oriented polypropylene) film, a CPP (Casting polypropylene) film with a heat-sealed or adhesive bonded to the film by using excellent adhesion between the layers, corrosion and reflection efficiency of the deposited aluminum Prevents degradation, has good durability, transparency, tensile strength, heat resistance, etc., and is made of the same polypropylene material, so that it can be used for other purposes even when discarded, providing a porous reflective film for farming will be.

Another object of the present invention is to easily form a drain hole of an appropriate size that is uniformly arranged in the width and length directions by drilling with a core drill on the surface of a roll-shaped reflective film without adding a separate process, and also reflecting Forming fine irregularities as a whole on the surface of the film to lower the light transmittance of the reflective film and improve the reflectivity to provide a farming pore reflective film that can effectively prevent the water evaporation and weed generation of soil.

In the agricultural porous reflecting film according to the present invention, an aluminum thin film (2) is deposited on an OPP (Oriented Polypropylene) film (1), and a roll formed by bonding a CPP (Casting polypropylene) film (3) thereon. In the reflective film (R) of the form, by drilling with a core drill on the surface of the reflective film (A) of the roll form to form a drainage hole (4) arranged on the reflective film (R) in the width and length direction The diameter of the drain hole 4 is 5-8 mm, and the space | interval consists of 20-30 cm of width directions, and 30-60 cm of longitudinal directions.

In addition, the CPP (Casting polypropylene) film (3) is bonded on the aluminum thin film (2) by an adhesive or heat fusion, the reflective film (R) is a paper tube having an outer diameter of 10 ~ 20cm and a width of 1 ~ 2m It is perforated in a state of being wound in a thickness of 3 to 10 cm on the roll formed, characterized in that the thickness of one layer of the reflective film (R) is 30 to 35㎛. In addition, the reflective film R may have fine unevennesses 5 having a roughness of 10 μm or less on an entire surface of an OPP (Oriented polypropylene) film 1 and a CPP (Casting polypropylene) film 3.

The porous porous reflective film of the present invention is bonded to a polypropylene (CPP) film made of the same type of synthetic resin to an OPP (Oriented polypropylene) film deposited with aluminum to reduce the defect rate of the product and improve the quality and durability of the reflective film and waste It is possible to recycle, and without drilling any additional process, by drilling a core drill directly on the surface of the roll-shaped reflective film to form a proper sized drainage hole, it is easy to drill the drainage hole. By forming fine unevenness on one surface as a whole, it is possible to lower the light transmittance of the reflective film and improve the reflectivity, thereby preventing the evaporation of the soil and the occurrence of weeds as much as possible.

1 is a block diagram showing an embodiment of a farming porous reflecting film according to the present invention.
Figure 2a is a top configuration diagram showing another embodiment of a farming porous reflecting film according to the present invention.
Figure 2b is a lower configuration diagram showing another embodiment of a farming porous reflecting film according to the present invention.
3 is a cross-sectional view showing the structure of a farming hole reflective film according to the present invention (fine unevenness).
4 is a cross-sectional view showing the structure of the agriculturally porous hole reflective film according to the present invention (fine unevenness).

Hereinafter, with reference to the drawings will be described for the agricultural perforated reflective film according to the present invention, which is intended to illustrate to the extent that it can be easily carried out self-invention having ordinary knowledge in the art to which the present invention belongs, This does not mean that the technical spirit and scope of the present invention is limited.

In the agricultural porous reflecting film according to the present invention, an aluminum thin film (2) is deposited on an OPP (Oriented Polypropylene) film (1), and a CPP (Casting Polypropylene) film (3) is bonded to a roll. In the reflective film (R) of the form, the drain hole (4) is formed on the reflective film (R) in a constant width and length direction is formed by drilling with a core drill on the surface of the roll-shaped reflective film (R) In this case, the diameter of the drain hole 4 is 5 ~ 8㎜, the interval is made of a width direction 20 ~ 30cm and the longitudinal direction 30 ~ 60cm.

In order to manufacture the reflective film R of the present invention, after manufacturing the OPP film 1 on which the aluminum thin film 2 is deposited, an adhesive is coated on the aluminum thin film 2 and the surface coated with the adhesive and the CPP film ( 3) is laminated and bonded with a roller, which is wound in a roll form using a paper tube. At this time, it is preferable to use an EVA resin adhesive. EVA resin is a copolymer of ethylene and vinyl acetate, and has the same flexibility and rubber elasticity as soft PVC, and has excellent molding processability and tensile strength. It is environmentally non-toxic material with performance suitable for the purpose of improving strength, elongation, tensile modulus, moisture resistance, and thermal bonding. In addition, the reflective film R of the present invention may be laminated by thermal fusion at a temperature of about 160 ° C. or less by laminating an OPP film 1 and a CPP film 3 on which an aluminum thin film 2 is deposited without using an adhesive. Of course you can.

On the other hand, aluminum (Al) deposited film heats and evaporates evaporated materials in a high vacuum state to condense on the surface of the substrate to form a film, which has excellent metallic gloss like mirrors and excellent gas barrier properties, and low light transmittance. In addition, there is a blocking effect such as ultraviolet rays, and generally used deposition film for CPP, PET, LDPE film, PE film or non-woven fabric is used in this deposition film.

OPP (Oriented polypropylene) film used in the present invention is a polypropylene stretched film manufactured by extruding by uniaxial or biaxial stretching by T-Die method using polypropylene as a raw material and excellent in processability, nontoxic and odorless In particular, the mechanical properties are improved compared to the general PP film, the elastic modulus, transparency, gloss, gas permeability is excellent and more excellent. Due to the inherent characteristics of the OPP film, the reflective film R of the present invention has excellent transparency, light transmittance, tensile strength and durability than the reflective film manufactured based on CPP, PET, and LDPE films, and furthermore, an aluminum deposition surface. This damage can also prevent the problem that the light reflection effect is lowered.

In the reflective film R of the present invention, a CPP (Casting polypropylene) film (3) is bonded to the aluminum thin film (2) deposited on the OPP film (1), and the upper and lower layers are combined with a film made of polypropylene resin. The CPP film (3) is a polypropylene non-stretched film that does not stretch polypropylene, and is manufactured by the T-Die method like the OPP film, so that the thickness is uniform, and the transparency and gloss are excellent. The film is excellent and very hygienic. In addition, the CPP film (1) is not only significantly higher in impact resistance and heat resistance than LDPE or HDPE film, but also excellent in flexibility compared to the OPP film (1) to improve the defect of tearing the reflective film (R) without using a nonwoven fabric. As such, the CPP film 1 has been studied to be most suitable for physical reinforcement of the OPP film 1 on which the aluminum thin film 2 is deposited.

As described above, in the present invention, the CPP film 3 is bonded to the aluminum deposition surface of the OPP film 1 on which the aluminum thin film 2 is deposited by adhesive or heat fusion, and the CPP film 3 is an OPP film 1 It is a synthetic resin with similar physical and chemical properties, and has excellent adhesiveness and heat sealability. Therefore, it has excellent moisture resistance and excellent properties such as surface hardness and heat resistance compared to conventional PE film, LDPE film, and HDPE film. In particular, it was confirmed that the separation phenomenon and poor workability between the joint surface according to the laminated film of different materials are significantly improved. Due to such product characteristics, moisture is prevented from penetrating between the CPP film 3 and the bonded aluminum deposition surface, thereby preventing loss of reflection effect and shortening of life of the reflective film R due to the deterioration of the aluminum thin film 2.

In addition, the reflective film (R) of the present invention is similar to each other in the melting temperature of the OPP film (1) and the CPP film (3) in the range of about 160 ~ 170 ℃ and the resin component to the aluminum material having a melting temperature of about 660 ℃ Since it is easy to separate, even if an ultra-thin aluminum deposition surface exists between the bonding surfaces between the films, it is very advantageous when the waste reflecting film is recycled or discarded for other purposes. For example, considering that the melting temperature of PET resin is about 280 ~ 300 ℃ and the melting temperature of PE resin such as LDPE or HDPE is about 110 ~ 140 ℃ level, the present invention is laminated with different kinds of synthetic resin There is also an advantage that can solve the difficult problem of recycling by using.

And the reflective film (R) is not only easy to manufacture and handle and economical to set the thickness of the laminated film layer of 30 ~ 35㎛ but also characteristics of the product such as light transmittance and tensile strength required in the present invention It is suitable to be used, and when it is installed on the ground where the crop is planted, it is preferable that the CPP film 3 is faced up, but even if the OPP film 1 is turned upside down, the effect is limited enough to cause a significant difference. It is also convenient for practical use.

As described above, the OPP film 1 on which the aluminum thin film 2 is deposited is laminated by laminating the CPP film 3 on the aluminum deposition surface and pressing the upper and lower rollers, as shown in FIG. 4, the upper and lower rollers. Fine unevenness 5 having a roughness of 10 μm or less is formed on the surface of either the OPP film 1 or the CPP film 3 by forming fine unevenness 5 having a roughness of 10 μm or less on any one of the rollers. You can. The concave-convex structure of the reflective film R formed as described above slightly lowers the transparency of the film, but by constructing the fine concave-convex portion 5 to face the lower side, lowering direct light transmittance to the soil and improving light reflectance. It was confirmed that the water evaporation and weed generation can be effectively prevented.

The reflective film R having the uneven structure formed thereon may be constructed to face the surface on which the fine unevenness 5 is formed to adjust the light environment for the plant. The excessive amount of light dries the skin or leaves of the crops, thus preventing the defect of degrading the marketability of the crops.

The reflective film R formed as described above is wound into a paper tube and manufactured in a roll shape. The roll-shaped reflective film R is perforated in the direction of the inner tube from the surface using a core drill to form a reflective film ( On the plane of R) to form a drain hole 4 is arranged in a constant width and length direction, the reflecting film (R) is a roll consisting of a paper tube having an outer diameter of 10 ~ 20cm and a width of 1 ~ 2m 3 By drilling in a state wound in a thickness of ˜10 cm, an interval between each drain hole 4 is made of a width direction of 20 to 30 cm and a longitudinal direction of 30 to 60 cm.

As shown in FIG. 1 and FIG. 2, the present invention may form the drainage holes 4 in one row along the width of the branch pipe, and may form the drainage holes 4 in two rows on the opposite side of the roll formed in one row. Of course. For this reason, the farming hole reflective film according to the present invention is completed as a roll-shaped hole reflective film (R) while omitting an additional additional drilling process for forming the drainage hole 4 as in the prior art.

In the drilling operation using the core drill, it is preferable that the diameter of the drain hole 4 is about 5 to 8 mm. If the diameter of the drain hole 4 is smaller than 5 mm, water droplets or water film is generated in the drain hole 4 itself. Due to this, the drainage of the water passing through the drain hole 4 becomes poor, and if the diameter of the drain hole 4 exceeds 8 mm, the drilling work is difficult and there is a risk of tearing in use, and weeds are easily generated through the drain hole 4. In the present invention, it was concluded that it is appropriate to set the diameter of the drain hole 4 to a size of 5 to 8 mm.

As described above, the agricultural porous pore reflecting film produced by the present invention has a higher quality than the reflective film prepared by bonding a PE film such as HDPE to a deposited film in which aluminum is deposited on a CPP or OPP film or PET film. To prove this superiority, numerous experiments such as appearance evaluation, film adhesion evaluation, tear strength evaluation, workability evaluation, light transmittance evaluation, drainage evaluation, air transmittance evaluation, etc. are compared with conventional reflective films on the market. After completing the present invention, all of the above test items showed an excellent quality equivalent to or higher than the existing product.

Therefore, the agricultural perforated reflective film of the present invention is bonded to a CPP film made of the same type of synthetic resin to the OPP film on which aluminum is deposited to improve the productivity and quality of the product, improve durability and waste recycling, and also roll It is easy to form drainage holes by drilling a core-shaped reflective film with a core drill, and additionally, by forming fine unevenness on one surface of the reflective film as a whole, it has the effect of preventing moisture evaporation and weed generation of the soil as much as possible compared to existing products. Since it exhibits a remarkably differentiated quality, it can be used in various uses and forms without departing from the technical spirit of the present invention.

1: OPP film
2: aluminum thin film
3: CPP film
4: drain hole
5: fine unevenness
R: Reflective Film

Claims (5)

In the roll-shaped reflective film R formed by bonding an aluminum thin film 2 to an OPP (Oriented Polypropylene) film 1 and bonding a CPP (Casting Polypropylene) film 3 to the upper portion thereof,
By drilling with a core drill on the surface of the roll-shaped reflective film (R) to form a drain hole 4 is arranged in a constant width and length direction on the reflective film (R),
The diameter of the drain hole (4) is 5 ~ 8㎜, the interval is agricultural pore reflecting film, characterized in that consisting of 20 to 30 cm in the width direction and 30 to 60 cm in the longitudinal direction.
The method of claim 1,
The CPP (Casting Polypropylene) film (3) is a porous reflective film for farming, characterized in that bonded on the aluminum thin film (2) by an adhesive or heat fusion.
The method of claim 1,
The reflective film (R) is a perforated reflective film for farming, characterized in that perforated in a state wound in a thickness of 3 ~ 10cm in a roll consisting of a paper tube having an outer diameter of 10 ~ 20cm and a width of 1 ~ 2m.
4. The method according to any one of claims 1 to 3,
The reflective film (R) is a porous porous reflective film, characterized in that the thickness of one layer of 30 ~ 35㎛.
4. The method according to any one of claims 1 to 3,
The reflective film (R) is agricultural pores, characterized in that the fine concavo-convex (5) of roughness 10㎛ or less is formed on one surface of the OPP (Oriented Polypropylene) film (1) and CPP (Casting Polypropylene) film (3) as a whole Reflective film.
KR1020130044827A 2013-04-23 2013-04-23 Reflecting film having holes for agriculture KR101277248B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015068972A1 (en) * 2013-11-06 2015-05-14 도레이첨단소재 주식회사 Easily removable paper tube, article employing same, and method of continuously using article

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009153398A (en) 2007-12-25 2009-07-16 Nidaiki Kk Agricultural sheet, method for cultivating/maintaining farm crop comprising use of the sheet, and cultivated farm crop
KR20110083775A (en) * 2010-01-15 2011-07-21 삼창산업 주식회사 Reflection film for cultivating plant
KR20110083774A (en) * 2010-01-15 2011-07-21 삼창산업 주식회사 Reflection film for cultivating plant
KR20120126620A (en) * 2011-05-12 2012-11-21 강창희 Method for manufacturing reflecting film for agriculture and the film thereby

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009153398A (en) 2007-12-25 2009-07-16 Nidaiki Kk Agricultural sheet, method for cultivating/maintaining farm crop comprising use of the sheet, and cultivated farm crop
KR20110083775A (en) * 2010-01-15 2011-07-21 삼창산업 주식회사 Reflection film for cultivating plant
KR20110083774A (en) * 2010-01-15 2011-07-21 삼창산업 주식회사 Reflection film for cultivating plant
KR20120126620A (en) * 2011-05-12 2012-11-21 강창희 Method for manufacturing reflecting film for agriculture and the film thereby

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015068972A1 (en) * 2013-11-06 2015-05-14 도레이첨단소재 주식회사 Easily removable paper tube, article employing same, and method of continuously using article
US9708153B2 (en) 2013-11-06 2017-07-18 Toray Advanced Materials Korea Inc. Easily removable paper tube, article using the paper tube, and method for successively using the articles

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