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Milky white PE (polyethylene) label film and production method thereof

A label and milky white technology, applied in the field of milky white PE label film and its production, can solve the problems of PE label film stiffness, poor yellowing resistance, difficulty in meeting printing and use requirements, etc., to meet printing and use requirements, without Surface precipitation, the effect of solving wrinkles and film surface wrinkles

Active Publication Date: 2019-04-12
永新股份(黄山)包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing PE label film has poor performance in terms of crystal point, surface precipitation, stiffness, yellowing resistance, etc., and it is difficult to meet the printing and use requirements

Method used

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  • Milky white PE (polyethylene) label film and production method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The production method of described milky white PE label film is as follows:

[0037] In step 1, the raw materials of the outer film layer, the middle film layer and the inner film layer are subjected to dust removal treatment.

[0038] Step 2, put the raw materials of the outer film layer, middle film layer and inner film layer into the corresponding suction area of ​​the multi-layer co-extrusion film blowing machine according to the above-mentioned component ratio requirements, and transport them to the hopper of the extruder under vacuum negative pressure, through The corresponding barrel of the extruder is plasticized into a melt, and when the melt is extruded by the extruder, it is filtered through a filter to reach the die head; the outer film layer and the inner film layer respectively include 69.5wt% LDPE, 30wt% cast Grade HDPE contains 0.5wt% PPA, and the intermediate film layer includes 45wt% blown film grade HDPE, 36.5wt% LDPE, 18wt% white masterbatch and 0.5w...

Embodiment 2

[0050] The production method of described milky white PE label film is as follows:

[0051] In step 1, the raw materials of the outer film layer, the middle film layer and the inner film layer are subjected to dust removal treatment.

[0052] Step 2, put the raw materials of the outer film layer, middle film layer and inner film layer into the corresponding suction area of ​​the multi-layer co-extrusion film blowing machine according to the above-mentioned component ratio requirements, and transport them to the hopper of the extruder under vacuum negative pressure, through The corresponding barrel of the extruder is plasticized into a melt, and when the melt is extruded by the extruder, it is filtered through a filter to reach the die head; the outer film layer and the inner film layer respectively include 68.5wt% LDPE, 31wt% cast Grade HDPE and 0.5wt% PPA, the intermediate film layer includes 44wt% blown film grade HDPE, 37.5wt% LDPE, 18.3wt% white masterbatch and 0.2wt% PPA....

Embodiment 3

[0060] The production method of described milky white PE label film is as follows:

[0061] In step 1, the raw materials of the outer film layer, the middle film layer and the inner film layer are subjected to dust removal treatment.

[0062] Step 2, put the raw materials of the outer film layer, middle film layer and inner film layer into the corresponding suction area of ​​the multi-layer co-extrusion film blowing machine according to the above-mentioned component ratio requirements, and transport them to the hopper of the extruder under vacuum negative pressure, through The corresponding barrel of the extruder is plasticized into a melt, and when the melt is extruded by the extruder, it is filtered through a filter to reach the die head; the outer film layer and the inner film layer respectively include 70.5wt% LDPE, 29wt% cast Grade HDPE and 0.5wt% PPA, the intermediate film layer includes 46wt% blown film grade HDPE, 35.5wt% LDPE, 17.7wt% white masterbatch and 0.8wt% PPA....

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Abstract

The invention relates to a milky white PE (polyethylene) label film. The milky white PE label film comprises an outer film layer, an intermediate film layer and an inner film layer, wherein the outerfilm layer and the inner film layer respectively comprise 68.5-70.5 wt% of LDPE (low-density polyethylene), 29-31 wt% of casting grade HDPE (high-density polyethylene) and 0.2-0.8 wt% of PPA (phenyl-propanolamine), and the intermediate film layer comprises 44-46 wt% of blown film grade HDPE, 35.5-37.5 wt% of LDPE, 17-19 wt% of white masterbatch and 0.2-0.8 wt% of PPA. In addition, the invention also provides a production method of the milky white PE label film. The milky white PE label film has the characteristics of low crystal point, no surface precipitation, high stiffness and yellowing resistance, and meets requirements for printing and use.

Description

technical field [0001] The invention belongs to the technical field of film materials, and in particular relates to a milky white PE label film and a production method thereof. Background technique [0002] In recent years, with the rapid development of my country's economy, especially the rapid development of industries such as food, daily chemicals, detergents, medicine, cosmetics, home appliances, supermarkets, and logistics, my country's label printing industry has made great progress, which in turn has driven label printing. Printing equipment companies and label material manufacturers have also developed accordingly. A relatively complete label printing industry chain has been formed in our country. With the growth of consumption capacity, the types of labels on the market are constantly enriched, and the development and upgrading of technology will bring new market space and business opportunities to the label printing industry. The existing PE label film has poor pe...

Claims

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Application Information

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IPC IPC(8): G09F3/02B32B27/32B32B27/06B32B27/18B29C48/21B29C69/00
CPCB29C69/00B32B27/08B32B27/18B32B27/32B32B2307/406B32B2307/50B32B2307/54B32B2307/734G09F3/02G09F2003/0257
Inventor 汪飞胡鸿波汪云辉徐舟
Owner 永新股份(黄山)包装有限公司
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