Microporous preservative BOPP film and preparation method thereof

A microporous and thin-film technology, which is applied in the field of microporous fresh-keeping BOPP film and its preparation, can solve problems such as the inability to quickly and fully adjust the atmosphere ratio of packaging bags, the inability to achieve average control of the atmosphere in the packaging, and the inability to meet the requirements of fresh-keeping packaging for fruits and vegetables. Reduce the effect of bacterial growth and reproduction, reduce bacterial growth, and reduce the phenomenon of burnt edges

Active Publication Date: 2017-05-31
山东顺凯复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The above solutions all have the problem of small pore diameter or closed micropores in the membrane, which cannot quickly and fully adjust the ratio of the atmosphere inside and outside the packaging bag, and the fresh-keeping effect is poor, which cannot meet the requirements of fresh-keeping packagi

Method used

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  • Microporous preservative BOPP film and preparation method thereof

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Example Embodiment

[0032] Example 1

[0033] Such as figure 1 As shown, the present invention provides a microporous fresh-keeping BOPP film comprising an upper surface layer 1, a core layer 2, a lower layer 3, the upper surface of the core layer 2 is provided with an upper surface layer 1, and the lower surface of the core layer 2 is provided with a lower layer 3, so The surface of the surface layer 1 and the surface layer 3 is uniformly provided with a preset number of holes made by laser drilling 10um and a micropore density of 30 / cm 2 的微孔4;

[0034] The microporous fresh-keeping BOPP film is made of the following parts by weight of raw materials: based on a total of 1000 parts, homopolypropylene: 794.78 parts, antistatic agent: 28 parts, stiffening agent: 177 parts, anti-blocking Agent: 0.22 parts;

[0035] Among them, the upper surface layer is an anti-adhesion layer, accounting for 56 parts in total, of which homopolypropylene: 55.89 parts, and anti-adhesion agent 0.11 parts;

[0036] The core la...

Example Embodiment

[0050] Example 2

[0051] The present invention provides a microporous fresh-keeping BOPP film comprising an upper surface layer 1, a core layer 2, and a lower layer 3. The upper surface of the core layer 2 is provided with an upper surface layer 1, and the lower surface of the core layer 2 is provided with a lower layer 3, and the upper surface layer 1 and the surface of the lower layer 3 are uniformly provided with a preset number of holes made by laser drilling with a diameter of 10um and a micropore density of 30 / cm 2 的微孔4;

[0052] The microporous fresh-keeping BOPP film is made of the following parts by weight of raw materials: based on a total of 1000 parts, homopolypropylene: 794.86 parts, antistatic agent: 28 parts, stiffening agent: 177 parts, anti-blocking Agent: 0.14 parts;

[0053] Among them, the upper surface layer is an anti-blocking layer, which accounts for 56 parts in total, of which homopolypropylene: 55.93 parts, and anti-blocking agent 0.07 parts;

[0054] The c...

Example Embodiment

[0059] Example 3

[0060] The present invention provides a microporous fresh-keeping BOPP film comprising an upper surface layer 1, a core layer 2, and a lower layer 3. The upper surface of the core layer 2 is provided with an upper surface layer 1, and the lower surface of the core layer 2 is provided with a lower layer 3, and the upper surface layer 1 and the surface of the lower layer 3 are uniformly provided with a preset number of holes made by laser drilling with a hole diameter of 10um and a micropore density of 30 / cm 2 的微孔4;

[0061] The microporous fresh-keeping BOPP film is made of the following parts by weight: based on the total parts of 1000 parts, homopolypropylene: 794.94 parts, antistatic agent: 28 parts, stiffening agent: 177 parts, anti-blocking Agent: 0.06 parts;

[0062] Among them, the upper surface layer is an anti-adhesion layer, accounting for 56 parts in total, of which homopolypropylene: 55.97 parts, and anti-blocking agent 0.03 parts;

[0063] The core laye...

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Abstract

The invention provides a microporous preservative BOPP film, and belongs to the technical field of biaxially oriented polypropylene films. The microporous preservative BOPP film comprises an upper surface layer, a core layer and a lower surface layer, the upper surface layer is arranged on an upper surface of the core layer, the lower surface layer is arranged on a lower surface of the core layer, the microporous preservative BOPP film is characterized in that the upper surface layer is an anti-adhesion layer, a preset number of micropores formed by laser boring are uniformly formed in the surfaces of the upper surface layer and the lower surface layer, as the laser boring is added in the last procedure of film preparation in the preparation method, the process is simple, the control is accurate, the distances and sizes of the micropores can be adjusted, the prepared film has good air permeability and mechanical property, no micropore defective tearing is generated, and the microporous preservative BOPP film is suitable for averagely regulating and controlling the atmosphere in the package so as to play a better preservative effect.

Description

technical field [0001] The invention belongs to the technical field of biaxially stretched polypropylene film, and more specifically relates to a microporous fresh-keeping BOPP film and a preparation method thereof. Background technique [0002] In recent years, with the improvement of people's living standards and the specialization of agricultural planting, the demand for fresh fruits and vegetables is increasing. Due to the self-breathing effect of fruits and vegetables in the packaging and transportation process, oxygen is consumed to produce gases such as carbon dioxide, and the proportion of gases is constantly changing. It has a ripening effect on the fruits and vegetables themselves, and at the same time, breathing produces water vapor to form a humid environment to breed bacteria and rot. In order to prolong the long-term preservation period of fruits and vegetables, modified atmosphere packaging preservation technology is widely used. At present, the commonly used...

Claims

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Application Information

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IPC IPC(8): B32B27/32B32B27/18B32B27/08B32B3/24B32B33/00B32B38/04B29C69/00B29C47/06B29C55/14B65D65/40B29L7/00
CPCB29C48/0018B29C48/18B29C55/146B29L2007/00B32B3/266B32B27/08B32B27/18B32B27/32B32B33/00B32B38/04B32B2305/026B32B2307/412B32B2307/7145B32B2307/724B65D65/40
Inventor 杨东
Owner 山东顺凯复合材料有限公司
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