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Light-blocking agent for agricultural use

A sunscreen and agricultural technology, applied in the field of agricultural sunscreens, can solve the problems of insufficient durability of the coating film, the film is easily washed off, and the coating film cannot be easily removed, so as to achieve the effect of long-term shading effect

Active Publication Date: 2012-07-25
ACHILLES CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, for example, in the method of covering the shading net (sheet) on the agricultural film greenhouse, there are following disadvantages: the shading net itself is expensive, and cannot be easily installed and disassembled, which is labor-intensive.
In addition, in the method of shielding light by forming a thin film of inorganic substances such as lime, there are following disadvantages: it is difficult to coat the light shielding film uniformly on the film, and the thin film of inorganic substances such as lime is easily washed off when it rains, so it has to be washed away. Repeated spraying
This method of spraying and coating a light-shielding paint on an agricultural film uses a white water-based emulsion paint containing pigments adjusted to a specific viscosity. The light-shielding paint film can be formed on the film well, but the durability of the paint film is insufficient, and it cannot Easy to remove coating film

Method used

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  • Light-blocking agent for agricultural use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～8

[0073] According to the formulation (parts by weight) described in Table 1 below, a light-shielding coating liquid as an agricultural sun-shielding agent of the present invention was obtained. The obtained light-shielding coating liquid was spray-coated on an agricultural vinyl greenhouse film, and the state of the coating film, the water resistance and the removability of the coating film were evaluated according to certain criteria, and the results are summarized in Table 1.

[0074] [Table 1]

[0075]

[0076] *1: Inorganic substance 1: Average particle size less than 1 μm

[0077] Calcium carbonate (manufactured by Maruo Calcium Co., Ltd.; LUMINOUS (ルミナス); average particle diameter 0.1 μm)

[0078] *2: Inorganic substance 2: The average particle size is 1 μm or more

[0079] Calcium carbonate (manufactured by Shiraishi Calcium Corporation; ruby; average particle size 2 to 3 μm)

[0080] *3: Resin component A: acrylic resin emulsion; acid value 60; solid content 47%; ...

Embodiment 9～13

[0108] Examples 9-13 / Comparative Examples 8-10

[0109] The primers described in Table 3 below were mixed (parts by weight), coated on Achilles Nonkry (アキレスノンキリ-) (vinyl chloride resin film) by gravure printing, and dried at 90° C. for 30 seconds to form a primer film.

[0110] On the other hand, according to the formulation (parts by weight) shown in Table 3 below, the sunscreen agent of the present invention was obtained. The obtained opacifying agent was spray-coated on the above-mentioned base film, and the state of the coating film, the water resistance and the removability of the coating film were evaluated according to certain criteria, and the results are summarized in Table 3.

[0111] [table 3]

[0112]

[0113] *1: Manufactured by Nippon Polyurethane Corporation

[0114] *2: Acrylic resin emulsion with an acid value of 60; a molecular weight of more than 200,000; a solid content of 47%

[0115] *3: Acrylic resin emulsion with an acid value of 200; a molecular ...

Embodiment 14～19

[0134] According to the formulation (parts by weight) listed in Table 4 below, a vinyl chloride-based agricultural resin film (thickness 0.1 mm) was prepared by calendering.

[0135] Using the obtained vinyl chloride film, spread it on an agricultural vinyl greenhouse, spray the agricultural sunscreen agent of the present invention shown in the table, and evaluate the state of the coating film formed at this time and the durability of the coating film according to a certain standard. and removability, the results are summarized in Table 4.

[0136] [Table 4]

[0137]

[0138] *1: DS401: Fluorinated surfactant (manufactured by Daikin Industries, Ltd.)

[0139] *2: Hindered amine compound: LA-63 (manufactured by Asahi Denka Kogyo Co., Ltd.)

[0140] *3: Acrylic resin emulsion with an acid value of 60; a molecular weight of more than 200,000; a solid content of 47%

[0141] *4: Acrylic resin emulsion with an acid value of 200; a molecular weight of more than 200,000; a soli...

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Abstract

Disclosed is a light-blocking agent for agricultural use which is applied to a resin film for agricultural use and forms a light-blocking coating film thereon. Specifically, this light-blocking agent is used for forming an inorganic coating film on an agricultural house or the like for blocking sunlight. The inorganic coating film is formed as a durable light-blocking layer using a resin emulsionas a binder and blending an inorganic matter such as calcium carbonate or titanium oxide thereinto. This light-blocking coating film is resistant to water such as rainwater, and can be easily removedwith an alkaline remover if it is no longer necessary.

Description

technical field [0001] The present invention relates to an agricultural sunscreen agent suitable for agricultural films used in greenhouse cultivation or tunnel cultivation. Background technique [0002] With regard to greenhouse cultivation or tunnel cultivation, for crops cultivated in agricultural film greenhouses, if the transmitted sunlight is too strong, there may be adverse effects such as burns on the crops. In particular, in order to prevent summer crops from being burned, a method of covering shading nets (sheets) on agricultural greenhouses for shading, or by dispersing inorganic substances such as lime in water and spraying them on agricultural film greenhouses to form inorganic A method of shading light with a thin film. [0003] However, for example, in the method of covering the shading net (sheet) on the agricultural film greenhouse, there are following disadvantages: the shading net itself is expensive, and cannot be easily installed and disassembled, which...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D201/00C09D5/02C09D7/12
Inventor 町田稔巳薗林丰井上希望
Owner ACHILLES CORP