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Radiation crosslinking EVA-PE film surrounding floor board and the producing technique

An EVA-PE, radiation cross-linking technology, used in other household appliances, applications, household appliances, etc., can solve the problems of difficult to produce high-quality products, high composite technology, difficult waste disposal, etc., and achieve excellent shrinkage effect. , easy to use, improve the effect of reducing transparency

Inactive Publication Date: 2007-09-12
BAISHAN JINXIN NEW TYPE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are also some major defects, which greatly limit its popularization and application, such as: poor film-forming property, complex equipment required, high composite process technology, and it is difficult to produce high-quality products
Moreover, the product price is high, waste disposal is difficult, and harmful gas will be produced during incineration.
[0004] 2. The chemical cross-linking method uses chemical cross-linking agents for cross-linking. The chemical purity is not high, and the materials used can be widely used, but the problems of transparency, durability and environmental protection have not been completely solved, and the product cost is low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Mix EVA and PE resin in a ratio of 1:3, put them into a high-speed kneader and mix them at a low speed for 1-3 minutes, and mix them at a high speed for 2-4 minutes. Adjust the compressed air to control the folding diameter of the film; use the traction speed and extrusion to adjust the thickness of the film, after air-cooling and shaping, and finally wind up and pack it into the warehouse. After blow molding, the extrusion molding temperature is finally determined: Zone I 150-165°C, Zone II 170-185°C, Zone III 180-200°C, Zone IV 200-220°C, Zone V 175-195°C, Zone VI 180°C -200℃, extruder frequency modulation 35-45Hz, traction speed 5-8min. Here, the air-cooling flow is properly adjusted to control the height of the film bubble and the cooling line. The formed film is radiated and cross-linked by a general electron accelerator to improve the heat resistance, mechanical properties and transparency of the EVA-PE floor covering film. First cut the sample to test the heat ...

Embodiment 2

[0018] Mix EVA and PE resin in a ratio of 2:3, put them into a high-speed kneader and mix them at a low speed for 1-3 minutes, and mix them at a high speed for 2-4 minutes. Adjust the thickness of the film, air-cooling and shaping, packaging and warehousing, blow molding temperature: Zone I 150-165°C, Zone II 170-185°C, Zone III 180-200°C, Zone IV 200-220°C, Zone V 175- 195°C, 180-200°C in zone VI, extruder frequency modulation 35-45Hz, traction speed 5-8min. The formed film is radiated and cross-linked by a universal electron accelerator, and the temperature of the heat shrink packaging machine is set at 100°C, and then increases based on 5°C. The optimal temperature for shrinkage is 125°C-135°C, and the shrinkage time is 5 seconds. The rate is ≥ 20%, and the thickness of the film is determined to be 0.10-0.12mm according to the weight of the packaged product and other conditions.

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Abstract

The present invention discloses one kind of radiation cross-linked EVA-PE floor board covering film and its production process. The production process includes mixing EVA resin and PE resin in certain ratio in a high speed kneader, extruding and blowing the mixture in a film blowing machine with regulated compressed air, regulating film thickness and air cooled setting, and radiation cross-linking in a general electronic accelerator at the contraction temperature of 125-135 deg.c for 4-6 sec. The production process of the present invention can strengthen the surface polarity of polymer material, raise the transparency and raise strength, and the produced film is environment friendly, and may be also used in packing food, medicine, beverage, etc.

Description

technical field [0001] The invention discloses a radiation cross-linked EVA-PE floor coating film and a production process thereof, which are mainly used in the packaging of composite floors and belong to the technical field of packaging material production. Background technique [0002] At present, there are mainly the following processing methods for plastic packaging materials: [0003] 1. The multi-layer composite method is composed of a barrier layer and a polyolefin layer. In order to make the bonding force between the two layers better, an intermediate adhesive layer is generally provided between the layers. This method is compounded by multi-layer co-extrusion technology, giving full play to the characteristics of different interlayer resins and taking into account the processing performance, so as to improve the transparency, barrier properties (blocking moisture, gas, impurities, etc.), printability, and adhesion of the packaging film. sex. But there are also som...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C55/28B29C47/92B29C71/04B29C35/08B29K31/00B29K23/00B29L7/00B29C48/92
CPCB29C47/92B29C48/10B29C48/92B29C2948/92561B29C2948/92647B29C2948/92704B29C2948/92923
Inventor 张仕军
Owner BAISHAN JINXIN NEW TYPE MATERIAL