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2002-2007

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  • Time of issue:2021-12-29
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(Summary description)Self built 8000 square meters workshop, expanded production scale and added 2 ~ 3 layers of extrusion composite equipment.

2002-2007

(Summary description)Self built 8000 square meters workshop, expanded production scale and added 2 ~ 3 layers of extrusion composite equipment.

  • Categories:History
  • Author:
  • Origin:
  • Time of issue:2021-12-29
  • Views:0
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Self built 8000 square meters workshop, expanded production scale and added 2 ~ 3 layers of extrusion composite equipment.

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Previous: 2008-2015
Previous: 2008-2015

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Development and application of agricultural film

Development and application of agricultural film

Traditional plastic agricultural film according to different resin raw materials, plastic films commonly used in agricultural production mainly include polyvinyl chloride (PVC) film, polyethylene (PE) film, ethylene monoester acid ethylene copolymer (EVA) film, etc. Firstly, the resin material, masterbatch core, modifier, coupling layer and dispersion layer are made into plastic masterbatch, and different types of films are made by calendering or blow molding process. The main functions of agricultural film mulching in production are increasing temperature, preserving moisture, regulating light, preventing grass and regulating soil salinity. The earliest used agricultural film is PVC film, which has good thermal insulation and weather resistance, but has a large proportion. The film surface is easy to absorb dust, has poor light transmittance, and produces toxic gases such as HCl during combustion; PE film is light, soft, easy to shape and good light transmittance. It is one of the main agricultural films used in China, but it has poor weather resistance and thermal insulation, and is easy to form water droplets; EVA film is a new film material used in agriculture in recent years because its light transmittance, heat preservation and weather resistance are better than PVC and PE films. For decades, plastic film mulching technology has promoted the rapid development of agricultural economy, but the degradation process of plastic agricultural film is slow and takes more than 100 years, resulting in the decline of soil quality and environmental pollution.
发布时间 : 2021-09-29 点击 : 0

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