Novel agricultural anti-drop defogging film

Abstract

The invention relates to a novel agricultural anti-drop defogging film, which consists of two to three varieties of colorless agricultural polythene (comprising EVA resin), wherein the raw materials comprise 10 to 15 percent by weight of long-acting anti-drop defogging parent stock and 85 to 90 percent by weight of linear low-density polyethylene resin and the like. The novel agricultural anti-drop defogging film prepared by blow molding according to the formula can prolong the drain defogging period by over 60 days, increases the anti-drop defogging period of the common internal addition blow molding agricultural anti-drop defogging film from about 120 days to over 180 days and increases light transmittance and thermal insulation property of the film, reduces parent stock cost and obviously improves combination property of the agricultural vinyl tunnel film. The novel agricultural anti-drop defogging film can obviously improve yield and quality when covered on the overwintering vinyltunnel to cultivate crops such as vegetables, fruit trees and the like and has a good popularization and application prospect.

Description

(1) Field of invention [0001] The invention belongs to a solar greenhouse type agricultural plastic shed film product. (2) Technical background [0002] At present, agricultural plastic films are used in solar greenhouses. Although there are many types of polyolefin non-drip defogging films, they have the following disadvantages in production and application: First, agricultural film-type polyolefin non-drip defogging films generally have poor thermal insulation and infrared barriers. The efficiency is low. Adding long-gauge thermal insulation agents such as talcum powder and kaolin can solve certain thermal insulation problems, but the light transmittance will drop significantly. When adding thermal insulation agents for a long time, the light transmission will be poor; It is generally about 120 days, which cannot meet the needs of greenhouse crop growth especially in the northern region. (3) Contents of the invention [0003] The present invention provides a new type of...

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Problems solved by technology

[0002] At present, agricultural plastic films are used in solar greenhouses. Although there are many types of polyolefin non-drip defogging films, they have the following disadvantages in production and application: First, agricultural film-type polyolefin non-drip defogging films generally have poor thermal insulation and infrared barriers. The efficiency is low. Adding long-gauge thermal insulation agents such as talcum powder and kaolin can solve certain thermal insulation problems, but the light transmittance will drop significantly. When adding thermal insulation agents for a long time, the light transmission will be poor; Generally, it is about 120 days, which cannot meet the needs of growing greenhouse crops, especially in northern regions.

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