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Transparent and high-barrier pesticide packaging film and preparation technology thereof

A preparation process and packaging film technology, applied in the field of transparent and high-barrier pesticide packaging films, can solve the problems of fragility, high cost, poor environmental protection, etc., achieve good toughness and fatigue resistance, improve toughness and resilience, and resist falling. The effect of strong rupture ability

Inactive Publication Date: 2018-12-11
JIANGYIN BAOBO PACKING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of the traditional pesticide packaging is in the form of large packages, which are usually not used up by farmers at one time, and the remaining pesticides are often difficult to store, which brings hidden dangers such as poisoning and environmental pollution. High-efficiency pesticides have become a trend in the development of pesticides. It also makes it inevitable that small packages will replace large ones
[0003] Most of the pesticide small packages use aluminum foil bags, glass bottles and plastic bottles. The commonly used aluminum foil bag structures are PET / AL / PET / PE, PET / AL / PE, PET / AL / CPP, PET / AL / PET / CPP or PET / AL / PA / PE, etc. Although aluminum foil bags have the advantages of high strength and corrosion resistance, they are often used in pesticide packaging, but they are opaque, and farmers cannot intuitively understand the material state of the contents before use, such as the crystallization of active components Precipitation, emulsifier separation and stratification, preparation agglomeration, etc., and the aluminum foil bag contains aluminum foil which is not conducive to recycling or degradation, and the environmental protection is poor; glass bottles have excellent corrosion resistance, but they are easily broken, which can easily cause environmental pollution Pollution and high cost; plastic bottles have high strength, but ordinary plastic bottles have poor corrosion resistance and are easy to leak, while barrier plastic bottles have better corrosion resistance, but compared with other small packages, the cost is obvious Tall and mostly opaque

Method used

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  • Transparent and high-barrier pesticide packaging film and preparation technology thereof
  • Transparent and high-barrier pesticide packaging film and preparation technology thereof
  • Transparent and high-barrier pesticide packaging film and preparation technology thereof

Examples

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Effect test

preparation example Construction

[0036] A preparation process of a transparent high-barrier pesticide packaging film, comprising the steps of:

[0037]S1: Prepare a symmetrical nylon layer. According to the above-mentioned weight ratio, melt and plasticize the mixture of PE resin and toughener, and PA resin in different extruders, and extrude the melted resin into the same die According to a certain interlayer structure, it is evenly distributed in the die head, and then it is blown, cooled and shaped, and rolled to obtain a symmetrical nylon co-extrusion film with a structure of PE layer, PA layer, and PE layer;

[0038] S2: PET layer pretreatment, turn on the power switch of the plasma discharge device and the argon gas cylinder, adjust the power selection knob to achieve a power frequency of 20KHz, a power of 400W, adjust the argon flow rate to 3L / min, and observe a uniform and stable purple between the two electrodes , the PET layer is fed into the discharge area at a certain speed for 30s and then export...

Embodiment 1

[0045] Using the above-mentioned preparation process of a transparent and high-barrier pesticide packaging film, a pesticide packaging film with a thickness of 50 μm was prepared, in which the thickness of the PET layer was 10 μm, the thickness of the pattern layer and the glue layer were 3 μm, and the thickness of the symmetrical nylon co-extruded film was 37 μm. The thickness of PA in the nylon co-extruded film accounts for 15%, the weight of PA6 accounts for 10%, the weight of PA66 accounts for 90%, and the toughening agent POE elastomer in the PE layer accounts for 5%. Ethylene accounts for 35% by weight, and low-density polyethylene accounts for 60% by weight.

Embodiment 2

[0047] The difference between Example 2 and Example 1 is that the thickness of the pesticide packaging film is 100 μm, the thickness of the PET layer is 12 μm, the thickness of the pattern layer and glue layer is 3 μm, the thickness of the symmetrical nylon co-extrusion film is 85 μm, and the PA in the symmetrical nylon co-extrusion film The thickness accounts for 18%, PA6 accounts for 15% by weight, PA66 accounts for 85% by weight, the toughener EVA elastomer in the PE layer accounts for 7%, and the linear low-density polyethylene accounts for 43% by weight. %, and the weight ratio of low-density polyethylene is 50%.

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Abstract

The invention discloses a transparent and high-barrier pesticide packaging film. The pesticide packaging film sequentially comprises a PET (polyethylene terephthalate) layer, a pattern layer, an adhesion layer and a symmetrical nylon layer, an SiO2 or Al2O3 ceramic film is arranged on the inner side surface of the PET layer, the adhesion layer is formed through solidification of highly anti-corrosion polyurethane glue, and the symmetrical nylon layer is a symmetrical nylon co-extrusion film composed of a PE (poly ethylene) layer, a PA (polyamide) layer and a PE layer which are sequentially arranged. The pesticide packaging film has the good transparency, can visually see the matter state of a content, the packaging film has the good permeating hindering effect on the content, the anti-falling and anti-pressing performance of the packaging film are greatly improved by adding nylon, the packaging film is easy to recycle, and meanwhile, the preparation technology of the transparent and high-barrier pesticide packaging film is simple, and industrialized production implementation is facilitated.

Description

technical field [0001] The invention belongs to the technical field of packaging materials, and specifically designs a transparent and high-barrier pesticide packaging film and a preparation process thereof. Background technique [0002] Most of the traditional pesticide packaging is in the form of large packages, which are usually not used up by farmers at one time, and the remaining pesticides are often difficult to store, which brings hidden dangers such as poisoning and environmental pollution. High-efficiency pesticides have become a trend in the development of pesticides. It also makes it inevitable that small packages will replace large ones. [0003] Most of the pesticide small packages use aluminum foil bags, glass bottles and plastic bottles. The commonly used aluminum foil bag structures are PET / AL / PET / PE, PET / AL / PE, PET / AL / CPP, PET / AL / PET / CPP or PET / AL / PA / PE, etc. Although aluminum foil bags have the advantages of high strength and corrosion resistance, they ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36B32B33/00B32B7/12B32B27/32B32B27/08B32B27/34B32B27/18
CPCB32B7/12B32B27/08B32B27/18B32B27/32B32B27/34B32B27/36B32B33/00B32B2307/412B32B2307/51B32B2307/552B32B2307/558B32B2307/584B32B2307/714B32B2553/00
Inventor 曹凯陈宝昆黄湘晖吴玲红单立
Owner JIANGYIN BAOBO PACKING
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