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PE mulching film

A mulch and the outermost layer technology, applied in plant protection, application, gardening, etc., can solve the problems of affecting the light transmittance and warming effect of the mulch, the accumulation of dust on the surface of the PE mulch, and the reduction of the sunlight transmittance of the mulch, etc., to achieve Increase light transmittance, good warming effect, and beneficial to increase production and value

Active Publication Date: 2019-04-26
ZHENGXIN PACKAGING CO LTD DONGGUAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, during the operation of ordinary PE film, the surface will generate static electricity, which will make the surface of PE film easy to accumulate dust, thus affecting the light transmittance and warming effect of the film.
Secondly, due to the condensation of water vapor, it is easy to form water droplets on the side of the PE film close to the ground surface, causing sunlight to be reflected, reducing the sunlight transmittance of the film, and affecting the performance of the entire film.

Method used

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preparation example Construction

[0027] PE film of the present invention can be prepared by following method, and its preparation method comprises:

[0028] (1) Extrusion: Mix the raw materials of the outermost layer, the second outer layer, the middle layer, the second inner layer and the innermost layer according to the ratio, and send them to the extruder of the five-layer co-extrusion film blowing unit;

[0029] (2) Blown film: the PE film is made by blowing the extruder of the five-layer co-extruded film blowing unit once;

[0030] (3) cooling;

[0031] (4) traction;

[0032] (5) coiling.

[0033] The PE film of the present invention will be described in detail through specific examples below, but the implementation scope of the present invention is not limited thereto.

Embodiment 1

[0035] The PE film includes the outermost layer, the second outer layer, the middle layer, the second inner layer and the innermost layer from top to bottom. The total thickness of the PE film is 30um. The performance parameters of each layer are as follows.

[0036] Outermost layer: 5% rigid amidopropyl dimethyl-β-hydroxyethyl ammonium nitrate and 95% LLDPE, the thickness is 1% of the total thickness of the PE film;

[0037] Second outer layer: the density of the material is 0.920g / cm 3 , the melt index is 1.0g / 10min, the thickness is 15% of the total thickness of the PE film, and the material density is 0.940g / cm 3 mPE and density of 0.910g / cm 3 The mLLDPE composition;

[0038] Middle layer: material with a density of 0.930g / cm 3 HDPE, the thickness is 30% of the total thickness of PE film;

[0039] Sub-inner layer: The density of the material is 0.920g / cm 3 , the melt index is 1.0g / 10min, the thickness is 15% of the total thickness of the PE film, and the material dens...

Embodiment 2

[0042] The PE film includes the outermost layer, the second outer layer, the middle layer, the second inner layer and the innermost layer from top to bottom. The total thickness of the PE film is 30um. The performance parameters of each layer are as follows.

[0043] Outermost layer: 15% (3-lauric acid aminopropyl) trimethylammonium methyl sulfate and 85% LLDPE, the thickness is 10% of the total thickness of the PE film;

[0044] Second outer layer: the density of the material is 0.920g / cm 3 , the melt index is 1.0g / 10min, the thickness is 15% of the total thickness of the PE film, and the material density is 0.970g / cm 3 mPE and density of 0.910g / cm 3 The mLLDPE composition;

[0045] Middle layer: material with a density of 0.950g / cm 3 HDPE, the thickness is 30% of the total thickness of PE film;

[0046] Sub-inner layer: The density of the material is 0.920g / cm 3, the melt index is 1.0g / 10min, the thickness is 15% of the total thickness of the PE film, and the material d...

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Abstract

The invention provides a PE mulching film. The PE mulching film comprises an outermost layer, a secondary outer layer, a middle layer, a secondary inner layer and an innermost layer which are sequentially arranged, and is characterized in that the innermost layer contains an anti-dripping agent; among the outermost layer, the secondary outer layer, the middle layer, the secondary inner layer and the innermost layer, at least the outermost layer contains an antistatic agent. According to the PE mulching film provided by the invention, the outermost layer can prevent the surface of the PE mulching film from adsorbing soil so as to increase the light transmittance of the mulching film, the innermost layer can prevent one surface, close to the ground surface, of the PE mulching film from condensing to form water droplets so as to increase the overall light transmittance of the PE mulching film, and through arrangement of the secondary outer layer, the middle layer and the secondary innerlayer, the PE mulching film can maintain relatively good tensile and toughness properties. The PE mulching film provided by the invention has high light transmittance and a good warming effect, and isbeneficial to increase in the yields and the values of plants.

Description

technical field [0001] The invention relates to the technical field of PE film, in particular to a PE film. Background technique [0002] PE mulch film has the characteristics of low thickness (10-30um), high yield, low cost, etc., and has good temperature increase and entropy retention. Grass protection, disease and pest control, drought and waterlogging resistance, salt suppression and seedling protection, improvement of light and heat conditions near the ground, and hygienic and clean products. For those seedlings just unearthed, it has the functions of mulching roots and promoting growth. For my country's three northern regions, low temperature, little rain, drought and poor ridges, short frost-free period and other factors that limit agricultural development are highly pertinent and applicable, and they also play a role in planting second-crop rice seedlings and cultivating various crops. It has been popularized and applied in 31 provinces, municipalities and autonomo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/18B32B27/32A01G13/02
CPCA01G13/0275B32B27/08B32B27/18B32B27/32B32B2410/00B32B2307/412B32B2307/54B32B2307/304B32B2307/21B32B2307/712B32B2250/242
Inventor 林城张坤宝黄镇荣
Owner ZHENGXIN PACKAGING CO LTD DONGGUAN
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