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Double-face heat-sealed and anti-fogging type BOPP (biaxially-oriented polypropylene) film and preparation method thereof

A double-sided, anti-fog technology, used in chemical instruments and methods, coatings, layered products, etc., can solve the problem of easy washing or rubbing, and can only be used in some occasions where internal anti-fogging agents are ineffective Or applications that do not require persistence, can not achieve good anti-fog effect, poor durability, etc., to achieve the effect of excellent anti-fog performance, significant anti-fog performance, and slow migration rate

Active Publication Date: 2014-04-09
ZHEJIANG KINLEAD PACKAGING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The internal anti-fogging agent is added to the resin during the batching. Its advantages are that it is not easy to lose and has long-lasting performance. The disadvantage is that it cannot achieve a good anti-fogging effect for polymers with high crystallinity. The external-coating anti-fogging agent is A surfactant that can be dissolved in organic solvents or water. When used, the solution is applied to the surface of the film or sheet. The advantage is that it is convenient to use and the cost is low. The disadvantage is that it has poor durability and is easy to be washed off or wiped off. Can be used in some occasions where internal anti-fogging agents are ineffective or where durability is not required

Method used

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  • Double-face heat-sealed and anti-fogging type BOPP (biaxially-oriented polypropylene) film and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Double-sided heat-sealed double-sided anti-fog BOPP film, which is composed of an inner surface layer, a core layer and an outer layer. The inner surface layer, the core layer and the outer layer are biaxially stretched after coextrusion. The material of the surface layer is composed of polypropylene and anti-sticking agent. The mass percentages of the components of the inner and outer layers are: polypropylene 97.5%, anti-sticking agent 2.5%; the core layer is made of polypropylene, anti-fog Composed of anti-fog agent and slip agent, the mass percentage of each component of the core layer is: polypropylene 95.9%, anti-fog agent 3.5%, slip agent 0.6%, and the anti-fog agent is composed of the following components in weight percentage : Sorbitan monostearate 50%, glyceryl monooleate 35%, polyethylene oxide (20) glyceryl monostearate 15%.

[0027] The thickness of the BOPP film described in Example 1 is 15 μm, wherein the thickness of the inner surface layer is 1.0 μm, th...

Embodiment 2

[0032] Double-sided heat-sealed double-sided anti-fog BOPP film, which is composed of an inner surface layer, a core layer and an outer layer. The inner surface layer, the core layer and the outer layer are biaxially stretched after coextrusion. The material of the surface layer is composed of polypropylene and anti-sticking agent. The mass percentages of the components of the inner and outer layers are: polypropylene 98.5%, anti-sticking agent 1.5%; the core layer is made of polypropylene, anti-fog Composed of agent and slip agent, the mass percentage of each component of the core layer is: polypropylene 97.1%, anti-fog agent 2.5%, slip agent 0.4%, and the anti-fog agent is composed of the following components in weight percentage : Sorbitan monostearate 50%, glyceryl monooleate 35%, polyethylene oxide (20) glyceryl monostearate 15%.

[0033] The thickness of the BOPP film described in Example 2 is 35 μm, wherein the thickness of the inner skin layer is 2.0 μm, the thickness ...

Embodiment 3

[0038]Double-sided heat-sealed double-sided anti-fog BOPP film, which consists of an inner surface layer, a core layer and an outer layer. The material of the surface layer is composed of polypropylene and anti-sticking agent. The mass percentages of the components of the inner and outer layers are: polypropylene 98.0%, anti-sticking agent 2.0%; the core layer is made of polypropylene, anti-fog Composed of agent and slip agent, the mass percentage of each component of the core layer is: polypropylene 96.5%, anti-fog agent 3.0%, slip agent 0.5%, and the anti-fog agent is composed of the following components in weight percentage : Sorbitan monostearate 50%, glyceryl monooleate 35%, polyethylene oxide (20) glyceryl monostearate 15%.

[0039] The thickness of the BOPP film described in Example 3 is 25 μm, wherein the thickness of the inner surface layer is 1.5 μm, the thickness of the outer surface layer is 1.5 μm, and the thickness of the core layer is 22.0 μm, and the polypropyl...

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Abstract

The invention relates to a double-face heat-sealed and anti-fogging type BOPP (biaxially-oriented polypropylene) film and a preparation method thereof. The double-face heat-sealed and anti-fogging type BOPP film is formed by co-extruding and biaxially stretching an inner surface layer, a core layer and an outer surface layer, wherein the inner surface layer and the outer surface layer are respectively made from 97.5-98.5 mass percent of polypropylene and 1.5-2.5 mass percent of anti-sticking agent; the core layer consists of 95.9-97.1 mass percent of polypropylene, 2.5-3.5 mass percent of an anti-fogging agent and 0.4-0.6 mass percent of a slipping agent; the anti-fogging agent consists of the following components by weight percent: 50 percent of sorbitan monostearate, 35 percent of glycerin monooleate and 15 percent of polyethylene oxide (20) glycerin monostearate. The selected polypropylene raw material is good in processing performance and high in mechanical strength. The anti-fogging agent is a mixture of multiple fatty acids and is well compatible with BOPP; by the addition of the anti-fogging agent and ethylene oxide, the hydrophilic performance is greatly improved, and the anti-fogging performance is improved.

Description

technical field [0001] The invention relates to a double-sided heat-sealed double-sided anti-fog type BOPP film and a preparation method thereof, belonging to the technical field of new materials. Background technique [0002] The emergence of anti-fog film not only improves the display of fresh goods, but also effectively prolongs the shelf life and shelf life of fresh goods. The trend of demanding packaging has led to the widespread restriction of PVC cling film in developed countries, while the demand for BOPP anti-fog film has increased significantly in recent years. BOPP anti-fog film has good transparency, anti-fog and display properties, long shelf life, meets the high safety requirements of food packaging, and its hardness and stiffness are extremely high, which can reflect the original appearance of fresh products and even can Improve the display of some relatively soft fresh goods, so BOPP anti-fog film has excellent shelfability and display. [0003] The anti-fo...

Claims

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Application Information

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IPC IPC(8): B32B27/32B32B27/20C08L23/12C08L23/14B29C69/00B29C47/92B29C48/92
CPCB29C48/08B29C48/154B29C48/92B29C2948/92704B29C2948/92895
Inventor 陈利红任通丁海军虞万金余序安陈华张爱民盛霞娟罗志伟
Owner ZHEJIANG KINLEAD PACKAGING MATERIAL
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