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Cross-linked resin modified matting material for BOPP matting film and preparation method of cross-linked resin modified matting material

A cross-linked resin and matting film technology, which is applied in the field of plastic films, can solve problems affecting the uniform distribution of matting material on the surface of the core layer, low haze of BOPP matting film, and limited fluidity of matting material, so as to improve the uniformity of matting , Reduce the thickness of the matte layer, and expand the effect of the difference in responsiveness

Pending Publication Date: 2021-08-03
ANHUI GUOFENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, there has been an obvious uneven matting problem in the industry for a long time, that is, the haze of the lateral sides of the BOPP matting film is lower than that of the middle area
This is mainly due to the difference in stretching ratio between the two side areas and the middle area under the existing process. In addition, due to the fixed structure of the die head and the flow channel of the equipment, the fluidity of the matting material in the melt state is limited, which affects the flow of the matting material in the core. Uniform distribution of layer surface

Method used

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  • Cross-linked resin modified matting material for BOPP matting film and preparation method of cross-linked resin modified matting material
  • Cross-linked resin modified matting material for BOPP matting film and preparation method of cross-linked resin modified matting material

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Effect test

Embodiment 1

[0018] The cross-linked resin modified matting material for BOPP matting film in the present embodiment, its components include: polypropylene 51%, high-density polyethylene 35.7%, cross-linked high-density polyethylene powder 9%, compatibilization 4% of antioxidant, 0.3% of antioxidant; wherein, the components of cross-linked high-density polyethylene powder include: 99% of high-density polyethylene, 1% of radiation cross-linking sensitizer.

[0019] Among them, polypropylene is ternary copolymerized polypropylene with a density of 0.895g / cm 3 , the melt index is 5.5g / 10min under the test conditions of temperature 230°C and load 2.16kg; the density of high-density polyethylene is 0.946g / cm 3 , the melt index is 1.2g / 10min under the test conditions of temperature 190℃ and load 2.16kg; the compatibilizer is linear low density polyethylene with a density of 0.936g / cm 3 , the melt index is 5.3g / 10min under the test conditions of a temperature of 190°C and a load of 2.16kg; the a...

Embodiment 2

[0024] The cross-linked resin modified matting material for BOPP matting film in the present embodiment, its components include by mass percentage: 48.7% of polypropylene, 30% of high-density polyethylene, 15% of cross-linked high-density polyethylene powder, compatibilization 6% of antioxidant, 0.3% of antioxidant; wherein, the components of cross-linked high-density polyethylene powder include: 98.5% of high-density polyethylene, and 1.5% of radiation cross-linking sensitizer.

[0025] Among them, polypropylene is ternary copolymerized polypropylene with a density of 0.910g / cm 3 , the melt index is 5g / 10min under the test conditions of temperature 230°C and load 2.16kg; the density of high-density polyethylene is 0.946g / cm 3 , the melt index is 1.2g / 10min under the test conditions of temperature 190℃ and load 2.16kg; The oxygen agent is a mixture of 1010 and 168 mass ratio = 1:2.

[0026] The preparation method of the cross-linked resin modified matting material for BOPP m...

Embodiment 3

[0028] The cross-linked resin modified matting material for BOPP matting film in this embodiment comprises: 47.2% polypropylene, 25.5% high-density polyethylene, 18% cross-linked high-density polyethylene powder, compatibilization 9% of antioxidant, 0.3% of antioxidant; wherein, the components of cross-linked high-density polyethylene powder include: 98.3% of high-density polyethylene, and 1.7% of radiation cross-linking sensitizer.

[0029] Among them, polypropylene is binary copolymerized polypropylene with a density of 0.900g / cm 3 , the melt index is 6.5g / 10min under the test conditions of temperature 230°C and load 2.16kg; the density of high-density polyethylene is 0.951g / cm 3 , the melt index is 2.2g / 10min under the test conditions of a temperature of 190°C and a load of 2.16kg; the compatibilizer is EPDM rubber, the ethylene content is 52wt%, and the ethylidene-norbornene content is 4.3wt%; The antioxidant is a mixture of 1010 and 168 with a mass ratio of 1:2.

[0030...

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Abstract

The invention discloses a cross-linked resin modified matting material for a BOPP matting film and a preparation method of the cross-linked resin modified matting material, which relate to the technical field of plastic films. The matting material comprises the following raw materials by mass: 42-55% of polypropylene, 15-36% of high density polyethylene, 5-30% of cross-linked high density polyethylene powder, 3-12% of a compatibilizer, and 0.1-0.5% of an antioxidant. The cross-linked high-density polyethylene powder is prepared from the following raw materials in percentage by mass: 97.5-99.7% of high-density polyethylene and 0.3-2.5% of irradiation cross-linking sensitizer. The cross-linked high-density polyethylene powder is firstly prepared, and the cross-linked high-density polyethylene powder is introduced into a conventional polypropylene / high-density polyethylene matting material system to prepare the cross-linked resin modified matting material. The matting material disclosed by the invention is used in matting film production, the phenomenon of friction powder falling in the film production process can be improved, the haze of a matting film finished product is high, and the matting uniformity of a film surface is good.

Description

technical field [0001] The invention relates to the technical field of plastic films, in particular to a cross-linked resin modified matting material for BOPP matting film and a preparation method thereof. Background technique [0002] The matting material for BOPP matting film is generally a blend system of polypropylene and high-density polyethylene. This system realizes matting characteristics based on the different responsiveness of polypropylene and high-density polyethylene to tensile force during biaxial stretching. The matting effect of this kind of matting material is good, and the current market maturity is very high, but there are many problems in this matting material. In the longitudinal stretching stage of the biaxial stretching production process, the phenomenon of "powder falling" often occurs, which seriously affects the production stability and product quality. This is mainly because the crystallization rate of high-density polyethylene is significantly hig...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L23/06C08J5/18C08J3/28C08J3/24
CPCC08J5/18C08J3/28C08J3/24C08J2323/14C08J2423/06C08J2323/06
Inventor 黄昊鹏陈铸红王红兵张少伟年陈瑞
Owner ANHUI GUOFENG PLASTIC
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