A kind of anti-fog antibacterial BOPP film and preparation method thereof

An anti-fog and film technology, applied in the field of plastic films, can solve the problems of short antibacterial validity period and poor anti-fog effect, and achieve the effects of stable chemical properties, preventing the generation of water mist, and saving investment.

Active Publication Date: 2020-12-04
ANHUI GUOFENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing BOPP film also has anti-fog and antibacterial effects, it has disadvantages such as poor anti-fog effect and short antibacterial validity period, and there is no film that has both

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] An anti-fog and antibacterial BOPP film is composed of an upper surface layer, a core layer and a lower surface layer, the core layer is 100% homopolypropylene, and the upper surface layer is made of 3.5% anti-fog masterbatch, 3% organic anti-sticking agent and 93.5% heat-sealing compound; the lower surface layer is composed of 5% anti-fog masterbatch, 3% organic anti-sticking agent, 1.5% antibacterial masterbatch and 90.5% heat-sealing compound.

[0030] Among them, the thickness of the upper surface layer accounts for 6% of the total thickness of the film; the thickness of the lower surface layer accounts for 8% of the total thickness of the film, and the thickness of the core layer accounts for 86%.

[0031] The preparation method of above-mentioned novel anti-fog antibacterial BOPP film comprises the following steps:

[0032] 1) Add homopolypropylene, the raw material of the core layer, into the main extruder and heat it into a molten state, and filter it as the mai...

Embodiment 2

[0038] An antifogging and antibacterial BOPP film, consisting of an upper surface layer, a core layer and a lower surface layer, the core layer is 100% homopolymerized polypropylene, and the upper surface layer is 3% antifogging agent, 2% antisticking agent and 95% multi-component copolymerization Composition of heat-sealing material; the lower surface layer is composed of 4% anti-fogging agent, 3% anti-adhesive agent, 1.5% nano-inorganic silver-based antibacterial agent and 91.5% multi-component copolymerized heat-sealing material.

[0039] Among them, the thickness of the upper surface layer accounts for 6% of the total thickness of the film; the thickness of the lower surface layer accounts for 8% of the total thickness of the film, and the thickness of the core layer accounts for 86%.

[0040] The preparation method of above-mentioned novel anti-fog antibacterial BOPP film comprises the following steps:

[0041] 1) Add homopolypropylene, the raw material of the core layer,...

Embodiment 3

[0047] An anti-fog and antibacterial BOPP film, consisting of an upper surface layer, a core layer and a lower surface layer, the core layer is 100% homopolypropylene, the upper surface layer is 4% anti-fog masterbatch, 3% anti-sticking agent and 93% Composition of multi-component copolymerization heat-sealing material; the lower surface layer is composed of 5% anti-fog masterbatch, 3% anti-adhesive agent, 2.0% nano-inorganic silver-based antibacterial masterbatch and 90% multi-component copolymerization heat-sealing material.

[0048] Among them, the thickness of the upper surface layer accounts for 8% of the total thickness of the film; the thickness of the lower surface layer accounts for 10% of the total thickness of the film, and the thickness of the core layer accounts for 82%.

[0049] The preparation method of above-mentioned novel anti-fog antibacterial BOPP film comprises the following steps:

[0050]1) Add homopolypropylene, the raw material of the core layer, into ...

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Abstract

The invention provides an anti-fog antibacterial BOPP film and a preparation method thereof. The film is prepared by sequentially and biaxially stretching an upper surface layer, a core layer and a lower surface layer, wherein the upper surface layer is an anti-fog layer composed of the following components by weight: 3-4 parts of anti-fog master batch, 2-3 parts of organic anti-adhesive agent and93-95 parts of heat sealing material; the core layer is homo-polypropylene; the lower layer is an anti-fog antibacterial layer composed of the following components by weight: 1-2 parts of antibacterial master batch, 2-3 parts of organic anti-adhesive agent, 4-5 parts of anti-fog master batch and 90-93 parts of heat sealing material. According to the preparation method, the anti-fog antibacterialBOPP film can be produced by direct co-extrusion in the biaxial stretching production line. Compared with the traditional coating anti-fog antibacterial film, the BOPP film can save the investment ofa coating machine and avoid pollution and energy loss caused by the later coating. At the same time, the film is more excellent and stable in anti-fog performance, and has long-term antibacterial capability.

Description

technical field [0001] The invention relates to the technical field of plastic films, in particular to an anti-fog and antibacterial BOPP film and a preparation method thereof. Background technique [0002] The production of BOPP film is to first make the melt of high molecular weight polypropylene through a narrow and long die into a sheet or a thick film, and then in a special stretching machine, at a certain temperature and a set speed, simultaneously or step by step Films made by stretching in two vertical directions, longitudinal and transverse, and undergoing appropriate cooling or heat treatment or special processing, such as corona, coating, etc. [0003] At present, films are widely used. Among them, films used for packaging fresh food and fruits need to have higher performance, such as anti-fog and antibacterial. Anti-fog film is to prevent water vapor from forming water mist on the surface of the film and affecting transparency; antibacterial Thin film means that...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/32B32B27/08B32B27/18C08L53/00C08L23/12C08K7/20C08K3/08C08K5/1535
CPCB32B27/08B32B27/18B32B27/32C08K2003/0806C08K2201/011C08L53/00C08L2203/16C08L23/12C08K7/20C08K3/08C08K5/1535
Inventor 张涛王红兵王恒煜谢城城张少伟
Owner ANHUI GUOFENG PLASTIC
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