Polyethylene film dedicated for genseng and production technology thereof

A polyethylene and linear polyethylene technology, which is applied in the field of agricultural shed film, can solve the problems of secondary agglomeration of ultrafine calcium carbonate particles, the failure to achieve the required light adjustment effect, and the difficulty in forming and processing a special film for ginseng. The effect of reducing the transmittance of direct light, which is beneficial to promotion and application

Active Publication Date: 2007-08-01
白山市喜丰塑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 l

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] a. Manufacture the masterbatch according to the anti-aging masterbatch formula:

[0058] Get 92.3 parts of linear polyethylene powdery resin with a melt index of 1.5g / 10min

[0059] Light stabilizer 9444.34 parts Antioxidant B215 0.92 parts Phthalocyanine blue 2.44 parts

[0060] Add each material to a plastic mixer and stir at high speed for two minutes to disperse evenly;

[0061] Extrude and granulate the dispersed mixed material with a twin-screw extruder. The process parameters of the twin-screw extruder are as follows:

[0062] Process temperature:

[0063] Zone 1 Zone 2 Zone 3 Zone 4 Zone 5

[0064] 140~145℃ 150~155℃ 160~165℃ 170~175℃ 180~185℃ 185~190℃

[0065] Host frequency: 35~45Hz

[0066] Feeding frequency: 25~30Hz

[0067] Pelletizer speed: 250~470 rpm

[0068] Cooling water temperature: 30~35℃

[0069] b. Manufacture masterbatch according to calcium carbonate filled modified masterbatch formula:

[0070] Get 48.85 parts of linear polyethylene powder...

Embodiment 2

[0090] a. Manufacture the masterbatch according to the anti-aging masterbatch formula:

[0091] Get 91.8 parts of linear polyethylene powdery resin whose melt index is 1.5g / 10min

[0092] Light stabilizer 944 5 parts Antioxidant B215 0.9 parts Phthalocyanine blue 2.3 parts

[0093] Add each material to a plastic mixer and stir at high speed for two minutes to disperse evenly;

[0094] Extrude and granulate the dispersed mixed material with a twin-screw extruder. The process parameters of the twin-screw extruder are as follows:

[0095] Process temperature:

[0096] Zone 1 Zone 2 Zone 3 Zone 4 Zone 5

[0097] 140~145℃ 150~155℃ 160~165℃ 170~175℃ 180~185℃ 185~190℃

[0098] Host frequency: 35~45Hz

[0099] Feeding frequency: 25~30Hz

[0100] Pelletizer speed: 250~470 rpm

[0101] Cooling water temperature: 30~35℃

[0102] b. Manufacture masterbatch according to calcium carbonate filled modified masterbatch formula:

[0103] Get 56 parts of linear polyethylene powdery resi...

Embodiment 3

[0123] a. Manufacture the masterbatch according to the anti-aging masterbatch formula:

[0124] Get 93.5 parts of linear polyethylene powdery resin with a melt index of 1.5g / 10min

[0125] Light stabilizer 944 3.4 parts Antioxidant B215 1 part Phthalocyanine blue 2.1 parts

[0126] Add each material to a plastic mixer and stir at high speed for two minutes to disperse evenly;

[0127] Extrude and granulate the dispersed mixed material with a twin-screw extruder. The process parameters of the twin-screw extruder are as follows:

[0128] Process temperature:

[0129] Zone 1 Zone 2 Zone 3 Zone 4 Zone 5

[0130] 140~145℃ 150~155℃ 160~165℃ 170~175℃ 180~185℃ 185~190℃

[0131] Host frequency: 35~45Hz

[0132] Feeding frequency: 25~30Hz

[0133] Pelletizer speed: 250~470 rpm

[0134] Cooling water temperature: 30~35℃

[0135] b. Manufacture masterbatch according to calcium carbonate filled modified masterbatch formula:

[0136] Get 41 parts of linear polyethylene powdery resi...

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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...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L27/06C08K9/00B29C47/40B29C47/92B29B9/12A01G13/02B29C48/92
CPCB29C47/92
Inventor 祝年锋孔杰蒋瑞萍李静华蒋万松
Owner 白山市喜丰塑业有限公司
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