Special weeding film for fruit trees and preparation process of special weeding film

Abstract

The invention discloses a special weeding film for fruit trees and a preparation process of the special weeding film. The special weeding film is prepared from the following components in percentage by mass: 65-80% of linear low-density polyethylene, 4-10% of low-density polyethylene, 6-10% of anti-aging masterbatch and 10-15% of light-blocking black masterbatch, wherein the anti-aging masterbatch is formed by reasonably matching, mixing and granulating according to demands. According to the preparation process disclosed by the invention, a conventional ground film blowing unit is adopted, PLC terminal software is adopted for inputting signals, particles which are well matched and mixed are put into a feed inlet of an extruder by a mechanical hand, and screw conveying, homogenization, compression, filtration, molding, traction, air ring cooling, coiling and packaging are performed; and the compression ratio of a mold head is controlled at 4.0-4.5 in molding, and the blow-up ratio of the film is controlled at 3.0-3.5. Compared with general molding requirements, the mechanical strength of the film is improved in comparison with that of the ordinary weeding ground film. According to the preparation process disclosed by the invention, the problems that a small amount of additives is added in the traditional process and the mixing with main raw materials is non-uniform to cause that the product quality is affected are solved, the stability of the product quality is ensured, the frequency of adding the materials is reduced, the time is saved and the product performances are further improved.

Description

technical field [0001] The invention relates to an agricultural mulching film, in particular to a special weeding film for fruit trees and a preparation process thereof. Background technique [0002] my country's agricultural ground covering plastic film was introduced from Japan in the late 1970s. With the continuous development of agricultural technology in our country, the use of agricultural ground covering plastic film referred to as "mulch film" has achieved unprecedented development. At present, China has become the largest consumer of agricultural "plastic film" in the world. However, the "white pollution problem" brought about by the extensive use of plastic mulch has become increasingly prominent. For this reason, the country has spent a lot of manpower and material resources to rectify and advocate waste recycling, but it is time-consuming and labor-intensive. At present, my country's plastic industry generally adopts the current national standard GB13735-92 fo...

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Problems solved by technology

[0003] In order to solve the existing problems of complex production process and cumbersome operation of weeding film, difficult mixing of various components during ...

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