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BOPET delustering white film and manufacturing technique thereof

A film and whitening technology, applied in the direction of flexible covering, packaging, layered products, etc., can solve the problems of limitation, poor covering effect, no matting effect, etc., to increase added value, good covering power, good matting effect. Effect

Inactive Publication Date: 2009-12-16
ANHUI GUOFENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, although the existing BOPET matting film has a matting effect, the light transmittance is relatively high, and the covering effect is poor. The existing white film has no matting effect, which limits their use.

Method used

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  • BOPET delustering white film and manufacturing technique thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Use biaxially stretched polyester bright slices and matt masterbatch to form a three-layer film after co-extrusion and biaxially stretched. As shown in Figure 1, the top layer 1 and bottom layer 3 are whitening layers, and the middle layer 2 is Ordinary transparent layer, as shown in Figure 1. The top layer 1 and the bottom layer 3 of the film contain 80% matt masterbatch and 20% white masterbatch by weight percentage; the middle layer 2 contains 70% polyester bright chip and 30% online recycling granulation material by weight percentage, and the film does not carry out Perform corona treatment.

[0026] The film production process according to the above ratio:

[0027] a. Polyester bright slices are dried in a fluidized bed at a temperature of 120-160°C for 4-5 hours to obtain dry raw materials; the dry raw materials are heated into a molten state in the main extruder, and filtered to obtain the core layer Main extrusion melt; in the auxiliary extruder, the matting m...

Embodiment 2

[0032] Use biaxially stretched polyester bright slices and matt masterbatch to form a three-layer film after co-extrusion and biaxially stretched. As shown in Figure 1, the top layer 1 and bottom layer 3 are whitening layers, and the middle layer 2 is Ordinary transparent layer, as shown in Figure 1. The top layer 1 and the bottom layer 3 of the film contain 90% matt masterbatch and 10% white masterbatch by weight percentage; the middle layer 2 contains 75% polyester bright chip and 25% online recycling granulation material by weight percentage, and the film does not carry out Perform corona treatment.

[0033] The film production process according to the above ratio:

[0034] a. Polyester bright slices are dried in a fluidized bed at a temperature of 120-160°C for 4-5 hours to obtain dry raw materials; the dry raw materials are heated into a molten state in the main extruder, and filtered to obtain the core layer Main extrusion melt; in the auxiliary extruder, the matting m...

Embodiment 3

[0039] Use biaxially stretched polyester bright slices and matt masterbatch to form a three-layer film after co-extrusion and biaxially stretched. As shown in Figure 1, the top layer 1 and bottom layer 3 are whitening layers, and the middle layer 2 is Ordinary transparent layer, as shown in Figure 1. The top layer 1 and the bottom layer 3 of the film contain 85% matt masterbatch and 15% white masterbatch by weight percentage; the middle layer 2 contains 76% polyester bright chip and 24% online recycling granulation material by weight percentage, and the film is carried out on one side Corona treatment.

[0040] The film production process according to the above ratio:

[0041] a. Polyester bright slices are dried in a fluidized bed at a temperature of 120-160°C for 4-5 hours to obtain dry raw materials; the dry raw materials are heated into a molten state in the main extruder, and filtered to obtain the core layer Main extrusion melt; in the auxiliary extruder, the matting m...

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Abstract

The invention discloses a BOPET delustering white film and manufacturing technique thereof. The delustering white film, having a three-layer structure with the middle layer being transparent layer, the top layer and bottom layer being delustering white layers, are formed of two-way stretch polyester lustrous chip, delustering masterbatch and white masterbatch by coextrusion and two-way stretch, wherein the transparent layer is polyester lustrous chip, main components of the delustering white film are delustering masterbatch and white masterbatch. The delustering batch has uniform distribution, good delustering effect, high opacity of film surface, pure whiteness, haze larger than 70%, 45DEG glossiness less than 25%, and light transmittance less than 35%.

Description

technical field [0001] The present invention relates to a film and its manufacturing process, in particular to a matte white biaxially stretched polyester film, referred to as BOPET whitening film and its manufacturing process. Background technique [0002] At present, in the field of flexible packaging, there is a great demand for high-transparency, high-gloss BOPET ordinary films. Low-gloss and high-whiteness whitening films have a certain degree of coverage because they can make the packaging surface hazy and improve the aesthetics of the packaging. In recent years, the application in the packaging field has gradually increased. [0003] However, although the existing BOPET matting film has a matting effect, the light transmittance is relatively high and the covering effect is poor, and the existing white film has no matting effect, which limits their applications. Contents of the invention [0004] In view of the deficiencies of the above-mentioned prior art, the tech...

Claims

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Application Information

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IPC IPC(8): B32B27/18B32B27/36B65D65/40B29B13/06B29C69/00B29C47/06B29C47/92B29C55/14B29C48/92
Inventor 陈铸红汪中祥孙善卫刘振华
Owner ANHUI GUOFENG PLASTIC
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