Polyethylene film dedicated for genseng and production technology thereof

Abstract

The invention relates to a polyethylene gen-seng specific film and the preparation process, belonging to agricultural covering film. Said film is semi-transparent, takes polyethylene as base material, and is prepared by adding functional masterbatch according to a certain proportion. The formulation comprises low- density polyethylene resin, liner low- density polyethylene resin, aging- tolerant masterbatch and ultra- fine calcium carbonate packing modifying masterbatch; said aging- tolerant masterbatch comprises liner polyethylene powder resin, light- stability agent, anti- oxidant and phthalocyanine; said ultra- fine calcium carbonate packing modifying masterbatch comprises liner polyethylene powder resin, calcium carbonate powder, aluminate ester coupling agent, mineral wax, micromolecule polyethylene wax or geoceric acid and anti- oxidant. The film is characterized in that: it effectivly avoids the high- temperature scorching from gen- seng leaves, increases broad light transmission, transmisses blue light and yellow selectively, which is good for gen- seng quality improvement; the life- length is long, covering film shaping is quite good, cost is low, and suitable for qide spread and application.

Description

technical field [0001] The invention relates to an agricultural shed film, in particular to a translucent polyethylene ginseng special film and its production process, especially to a translucent polyethylene ginseng special film modified with calcium carbonate and having high scattered light transmittance. mold and its production process. Background technique [0002] As we all know, ginseng has its unique efficacy as a natural medicine. In recent years, its consumption at home and abroad has shown a steady growth trend. Correspondingly, the planting area of ​​ginseng has also increased significantly. Ginseng is cold in nature and grows in half shade and half sun. Avoid direct sunlight. Excessive sunlight will cause a variety of physiological diseases in ginseng. The typical manifestation is that the leaves are scorched, resulting in a decline in the quality and yield of ginseng. In the past, ordinary shed film was used in ginseng planting. This kind of shed film has no ob...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a translucent polyethylene ginseng special film and its production process, which solves the difficulties in molding and processing of the existing ginseng special film, poor appearance, failure to achieve the required light adjustment effect and decline in physical and mechanical properties, and In the process of processing, the phenomenon of secondary agglomeration of ultrafine calcium carbonate particles is very easy to occur, and it cannot guarantee the ideal dispersion effect in the film.