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Pear-peel shaped agricultural polyolefin film

A technology of polyolefins and polyolefins, applied in the field of pear-skin-shaped agricultural films, can solve the problems of resin aging and achieve the effect of maintaining anti-fog and high light diffusion

Active Publication Date: 2011-06-01
CI KASEI COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the above-mentioned pear skin film for agricultural use, the softening temperature of each resin blended is different, so there is a disadvantage that the resin with a low softening temperature is degraded during the molding process, and a large amount of gel is generated.

Method used

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  • Pear-peel shaped agricultural polyolefin film
  • Pear-peel shaped agricultural polyolefin film
  • Pear-peel shaped agricultural polyolefin film

Examples

Experimental program
Comparison scheme
Effect test

example

[0042] Next, the present invention will be described in more detail based on examples, but the present invention is not limited by these examples. In addition, the anti-fogging coating film formation characteristics and the performance of the pear-skin-shaped agricultural multilayer film were determined as follows.

[0043] (1) Antifogging property Antifogging property of the coating film: The film was developed in a water bath at a water temperature of 20°C, and the antifogging property was evaluated at an ambient temperature of 5°C.

[0044] ◯: The coating film is uniform and the anti-fog property is good.

[0045] Δ: The coating film is slightly uneven, and water droplets are partially adhered.

[0046] ×: The coating film is uneven, and there is much adhesion of water droplets.

[0047] (2) Peel degree: The haze value of the film sample was measured with a haze meter HGM-2DP (manufactured by Suga Test Instruments Co., Ltd.), and evaluated by the following criteria.

[0...

example 1

[0064] Use the particles for the inner layer containing 80 parts by weight of EVA18 and 20 parts by weight of LDPE-2, the particles for the middle layer mixed with 5 parts by weight of hydrotalcite in 100 parts by weight of LLDPE-1, and the particles for the middle layer containing 80 parts by weight. Parts by weight of LLDPE-1 and 20 parts by weight of LDPE-2 particles for the outer layer are obtained by co-extrusion blow molding and configured in the order of inner layer, middle layer and outer layer from the outside, each A cylindrical composite film having a three-layer structure with layer thicknesses of 20 μm, 100 μm, and 30 μm.

[0065] Next, a coating solution for forming an antifogging coating film comprising 50 parts by weight of an acrylic resin emulsion, 50 parts by weight of alumina sol, and 0.5 parts by weight of a polyether-modified silicone-based surfactant was prepared, and used A gravure roll coater (anilox roll: 160 mesh) is applied to the outer surface of t...

example 2 and example 3

[0070] In Example 1, except having set the resin composition of each layer as shown in Table 1, it carried out similarly to Example 1, and obtained the pear-skin-shaped agricultural film which has an antifogging coating film. The anti-dripping property and peeling degree of the obtained pear-skin-shaped agricultural film were measured. The results are shown in Table 1.

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Abstract

The invention provides a pear-peel shaped agricultural polyolefin film, which comprises at least three layers.The film is characterized in that the inner layer thereof comprises 75 to 95 parts of a polyolefin (A) and 5 to 25 parts of a polyolefin (B) by weight.The polyolefin (A) comprises an ethylene-vinyl acetate copolymer with a melt flow rate of 1.2 g / 10 min - 10 g / 10 min.The polyolefin (B) is selected from one of high-pressure low density polyethylene and linear low density polyethylene with a melt flow rate ratio 0.2 g / 10 min smaller than that of the polyolefin (A).The surface of the inner layer is equipped with an c.The antifog coating film comprises an adhesive containing thermoplastic resin and an inorganic sol.

Description

technical field [0001] The present invention relates to a pear skin-like (satin-like) agricultural film having an antifogging coating film, and more particularly to an antifogging coating film having a simple structure, high light transmittance, and high scattering property Pear peel agricultural film. Background technique [0002] As a pear-skin-shaped agricultural film, in the case of agricultural polyvinyl chloride resin film, the film is produced by calendar method or T-die method, and embossed roll (embos sroll) The surface is formed into a pear skin shape. This kind of film has high light transmittance and high light diffusivity. Therefore, when used as an agricultural film, it can prevent leaves from scorching caused by direct sunlight. It is used in agricultural greenhouses or greenhouses that require light. for diffusion purposes. [0003] On the other hand, in recent years, agricultural films made of olefin resins have been continuously improved and utilized. H...

Claims

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Application Information

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IPC IPC(8): A01G13/02C08L23/08C08L23/06
CPCY02A40/25
Inventor 杉山聡教杉本崇行
Owner CI KASEI COMPANY