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Agricultural high-toughness VMCPP aluminum laminated film and preparation method thereof

A high-toughness, aluminized film technology, applied in botany equipment and methods, agriculture, agricultural machinery, etc., can solve the problems of poor puncture resistance, easy damage, and long-term durable use, etc., to achieve good overall performance, The effect of long service life and good performance

Inactive Publication Date: 2020-04-03
嘉兴鹏翔包装材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the VMCPP aluminized film currently on the market is easily damaged and has poor puncture resistance under the effect of long-term climate change in agricultural applications, so it cannot be used for a long time.

Method used

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  • Agricultural high-toughness VMCPP aluminum laminated film and preparation method thereof
  • Agricultural high-toughness VMCPP aluminum laminated film and preparation method thereof

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preparation example Construction

[0038] A preparation method for agricultural high-toughness VMCPP aluminized film, comprising the following preparation steps:

[0039] 1) According to the CPP film type, determine the corona layer, intermediate layer, heat seal layer material and their ratio;

[0040] 2) According to the formula ratio, add the materials of each layer into the hopper of each layer. The hopper of the corona layer is copolymerized polypropylene. Add homopolypropylene and TPE particles into the hopper of the middle layer. polypropylene;

[0041] 3) Set the melting temperature at 190°C to 230°C and the die temperature at 230°C to 232°C. When the temperature reaches the set temperature, put the material in the hopper into the extruder along the pipe to melt and extrude.

[0042] 4) The molten material is cast through a T-shaped die;

[0043] 5) The casted film is cooled by cooling rollers at a temperature of 42°C to 48°C;

[0044] 6) The edge of the cast film is bonded to the cooling roll by an ...

Embodiment 1

[0051] A / B / (80%PP+20%TPE) / D, the corona layer thickness ratio is 16%, the middle layer thickness ratio is 52%, and the heat seal layer thickness ratio is 32%.

[0052] Wherein, the material of the aluminized layer is polypropylene copolymer; said polypropylene copolymer is formed by binary copolymerization of propylene and ethylene or ternary copolymerization of propylene, ethylene and butene, with a melting point of 120-145°C and a melt index of 4-4. 10g / 10min, density 0.89~0.9g / cm 3 ; The middle layer is composed of homopolypropylene and TPE. The homopolypropylene has a melting point of 155-165°C, a melt index of 4-10g / 10min, and a density of 0.90-0.91g / cm 3 ; The TPE is a thermoplastic elastomer, translucent or transparent round or cylindrical particles, the density is generally 0.9 ~ 1.1g / cm 3 .

[0053] Compared with ordinary VMCPP films, the high-toughness VMCPP film in this case has improved the impact resistance by 20%.

Embodiment 2

[0055] A / B / (75%PP+25%TPE) / D, the corona layer thickness ratio is 16%, the middle layer thickness ratio is 52%, and the heat seal layer thickness ratio is 32%.

[0056] Wherein, the material of the aluminized layer is polypropylene copolymer; said polypropylene copolymer is formed by binary copolymerization of propylene and ethylene or ternary copolymerization of propylene, ethylene and butene, with a melting point of 120-145°C and a melt index of 4-4. 10g / 10min, density 0.89~0.9g / cm 3 ; The middle layer is composed of homopolypropylene and TPE. The homopolypropylene has a melting point of 155-165°C, a melt index of 4-10g / 10min, and a density of 0.90-0.91g / cm 3 ; The TPE is a thermoplastic elastomer, translucent or transparent round or cylindrical particles, the density is generally 0.9 ~ 1.1g / cm 3 .

[0057] Compared with ordinary VMCPP films, the high-toughness VMCPP film in this case has improved impact resistance by 28%.

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Abstract

The invention discloses an agricultural high-toughness VMCPP aluminum laminated film and a preparation method thereof. The film comprises an aluminum layer and a CPP base film layer, wherein the CPP base film layer is sequentially provided with an aluminized layer, namely a corona layer, a middle layer and a heat sealing layer from bottom to top, the thickness of the aluminum layer is in a range of 380 angstroms to 450 angstroms, the thickness ratio of the aluminized layer is in a range of 15% to 20%, the thickness of the middle layer is in a range of 50% to 70%, the thickness of the heat sealing layer is in a range of 15% to 30%, the middle layer is composed of homo-polypropylene and TPE, and the TPE accounts for 20-33 parts by weight of the middle layer. According to the agricultural high-toughness VMCPP aluminum laminated film disclosed by the invention, the TPE is added into the middle layer of the CPP base film, so that the film is excellent in comprehensive performance and long in service life.

Description

technical field [0001] The invention relates to the field of vacuum aluminized film products, in particular to an agricultural high-toughness VMCPP aluminized film and a preparation method thereof. Background technique [0002] Agriculture is an indispensable economic status of every country. Developing and improving agriculture is the primary responsibility of every country. In order to improve and develop agriculture, we must improve machinery, fertilizers and other equipment used in crops. Agricultural film is an indispensable part of every agricultural product. Plastic film can accelerate crop growth regardless of climate, protect plants from water loss, prevent low temperature, and prolong the growth period. [0003] With the development of the rural economy, my country's agricultural film market is currently showing a trend of accelerated development, and the scope of application is gradually expanding. The promotion and use of high-grade functional films has become a...

Claims

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Application Information

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IPC IPC(8): B32B27/32B32B27/06B32B33/00A01G13/02B29C69/00B29K23/00B29L7/00B29L9/00
CPCA01G13/0275B29C69/00B29K2023/14B29L2007/00B29L2009/00B32B27/08B32B27/32B32B33/00B32B2250/04B32B2250/242B32B2255/10B32B2255/205B32B2307/558B32B2410/00
Inventor 曹赤鹏魏威黄武华张雪瑜蒋建华刘巧妮
Owner 嘉兴鹏翔包装材料有限公司
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