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Agricultural multi-layered film

A multi-layer film and agricultural technology, applied in the fields of application, horticulture, botanical equipment and methods, etc., can solve the problems of reduced electrostatic workability, inability to ensure light transmission, and reduced cultivation, and achieve excellent antistatic performance Effect

Inactive Publication Date: 2014-01-29
MITSUBISHI PLASTICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in the anti-fogging agent coating type agricultural polyolefin film, the following problems will occur: in the early stage of spreading, due to the water resistance of the polyolefin resin, condensation will occur on the outside of the shed, causing the injection The amount of light in the greenhouse is reduced, which will lead to a decrease in cultivability
[0004] As time goes by, the poor light transmission caused by the water resistance of the membrane surface will be alleviated by the adhesion of dirt such as dust and dust on the membrane surface. However, in the case of spreading in winter, etc., after spreading When the period is short, light transmission cannot be ensured in the period when light is needed in the greenhouse, which may cause problems in practical use.
[0005] Furthermore, due to such a transition from the antifogging agent mixing type to the antifogging agent coating type, the decrease in workability due to static electricity during processing, which has not been a problem until now, has also become a problem. solve
[0006] On the other hand, it has been pointed out in recent years that some additives used in agricultural films have or may have bioconcentration (environmental residue) and toxicity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0135] (1) Preparation of laminated film

[0136] As a 3-layer inflation molding device, using For the extruder, the diameter of the extruders on the outer and inner layers of the two tubes is (manufactured by PLAGIKEN Co., Ltd.), the diameter of the extruder for the middle layer is (manufactured by PLAGIKEN Co., Ltd.), the temperature of the extruder for the outer and inner layers is 180°C, the temperature of the extruder for the middle layer is 170°C, the temperature of the die head is 180°C to 190°C, the inflation ratio is 2.0 to 3.0, and the extraction speed The (drawing speed) was 3 m / min to 7 m / min, and the thickness was 0.15 mm, and a three-layer laminated film composed of the components shown in Tables 1 to 3 was obtained. In addition, these films are used after the end of the tube is cut off when the film is spread in a shed. Therefore, the outer layer of the tube at the time of film production becomes the inner layer (inner surface) of the shed when spread.

[...

Embodiment 1

[0194] [Example 1, Comparative Examples 1 to 3]

[0195] According to the above formulation, a three-layer film (anti-fog coating film coating type) with a film thickness of 150 μm and a layer ratio of 1 / 3 / 1 was produced, and the water drop contact angle measurement, the water drop adhesion evaluation immediately after spreading, and the static voltage measurement were performed by the above method. , Oral evaluation. The results are listed in Table 1.

[0196] [Table 1] Evaluation results of polyolefin-based multilayer films for agricultural use

[0197]

Embodiment 1～2、 comparative example 4

[0199] According to the above formulation, a three-layer film (anti-fog coating film coating type) with a film thickness of 150 μm and a layer ratio of 1 / 3 / 1 was produced, and the water drop contact angle measurement, the water drop adhesion evaluation immediately after spreading, and the static voltage measurement were performed by the above method. , Oral evaluation. The results are listed in Table 2.

[0200] [Table 2] Evaluation results of polyolefin-based multilayer films for agricultural use

[0201]

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Abstract

[Problems] To provide an agricultural polyolefin-based multi-layered film in which a reduction in the translucency which is caused when dew formation is produced on the surface of the film on the exterior side of a greenhouse immediately after the film is stretched on the greenhouse is inhibited and accordingly a decrease in cultivation due to an insufficient amount of light is prevented from occurring, and a decrease in working performance when processing the film due to static electricity is prevented from occurring. [Solution] An agricultural polyolefin-based multi-layered film which is characterized in that a fluorine-based surfactant component and a fine particulate component having an average particle size of 1.0 µm or greater are at least included in the outer layer of a base film, and an antifogging coating layer comprising as a main component an inorganic colloidal sol or a synthetic resin binder and an inorganic colloidal sol is provided on the surface of the inner layer side of the base film.

Description

【Technical field】 [0001] The present invention relates to a polyolefin-based multilayer film for agriculture, capable of suppressing a reduction in light transmittance due to dew condensation on the film surface outside the greenhouse shortly after the film is spread in the greenhouse, thereby preventing The reduction of the cultivability of the film can be prevented, and the reduction of the workability due to static electricity during film processing can be prevented. 【Background technique】 [0002] In recent years, in order to improve the marketability and productivity of agricultural crops by semi-promoting or inhibiting cultivation, so-called greenhouse cultivation or tunnel cultivation in which useful plants are cultivated under the condition of covering with agricultural covering materials has been actively carried out. The covering material is an agricultural polyolefin resin film mainly composed of agricultural vinyl chloride film (hereinafter referred to as agricul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/20B32B27/30B32B27/32
CPCA01G13/0275
Inventor 市村拓野
Owner MITSUBISHI PLASTICS INC