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Heat shrinkable polyester film and preparation method thereof

A polyester film and heat-shrinkable technology, which is applied in sustainable manufacturing/processing, chemical industry, climate sustainability, etc., can solve the problems of poor performance, PVC heat-shrinkable film pollutes the environment, and is difficult to recycle, and achieves easy printing, The effect of reducing the difficulty of preparation and high surface printing performance

Active Publication Date: 2015-03-18
NINGBO CHANGYANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the defects that the existing heat-shrinkable polyester film (referred to as heat-shrinkable film) has poor performance, PVC heat-shrinkable film pollutes the environment, and is difficult to recycle, the present invention provides a heat-shrinkable polyester film and its preparation method. The raw materials of the film are easy to obtain, the preparation process is simple, and the performance is excellent

Method used

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  • Heat shrinkable polyester film and preparation method thereof
  • Heat shrinkable polyester film and preparation method thereof
  • Heat shrinkable polyester film and preparation method thereof

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preparation example Construction

[0039] The preparation method of heat-shrinkable polyester film provided by the invention comprises the steps:

[0040] (1) Melt, mix, extrude and granulate the filler particles and polyester chips to prepare a filler particle masterbatch with a filler particle content of 30-50%;

[0041] (2) Melt and mix foaming agent and polypropylene (PP, melting point 165°C) slices, extrude and granulate to prepare a foaming agent masterbatch (PP masterbatch) with a foaming agent content of 10-20% ;

[0042] (3) Mix the polyester material, anti-blocking masterbatch, filler particle masterbatch obtained in step (1), and foaming agent masterbatch obtained in step (2), melt at 260-280°C, and extrude into cast sheets , Stretch 2-4 times in the longitudinal direction at 60-105°C, heat set at 60-150°C for about 10-30 seconds, cool to room temperature, pull, and roll to obtain the above-mentioned heat-shrinkable polyester film.

[0043] The test method of the heat-shrinkable polyester film obta...

Embodiment 1

[0054] Prepare heat-shrinkable polyester film according to the above method, and the formula of gained polyester film is as follows,

[0055]

[0056] The specific process parameters are as follows: the melting temperature is 270°C; the longitudinal stretching temperature is 80°C, and the stretching is 2 times; the heat setting temperature is 85°C, and the time is 15 seconds. The performance test results of the obtained heat shrinkable film are shown in Table 1.

Embodiment 2

[0058] Prepare heat-shrinkable polyester film according to the above method, and the formula of gained polyester film is as follows,

[0059]

[0060] The specific process parameters are as follows: the melting temperature is 270°C; the longitudinal stretching temperature is 95°C, and the stretching is 3 times; the heat setting temperature is 145°C, and the time is 25 seconds. The performance test results of the obtained heat shrinkable film are shown in Table 1.

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Abstract

The invention relates to the technical field of a heat shrinkable polyester film, and particularly relates to a heat shrinkable polyester film and a preparation method thereof. The invention provides a heat shrinkable polyester film and a preparation method thereof, so as to solve the defect of poor performance of the existing heat shrinkable polyester film (a heat shrinkable for short) and the defects that the PVC (polyvinyl chloride) heat shrinkable film pollutes the environment, and is difficult to recover. The heat shrinkable polyester film is prepared from the following raw materials in percentage by weight: 20-59% of polyester material. 20-30% of anti-blocking master batch, 20-40% of filler particle master batch, and 1-10% of foaming agent master batch; the content of filler particles in the filler particle master batch is 30-50wt%; the content of a foaming agent in the foaming agent master batch is 10-20wt%; and the density of the polyester film is 0.8-1.3g / cm<3>. The raw materials of the polyester film are easy to obtain, the preparation method is simple and the polyester film is excellent in performance.

Description

technical field [0001] The invention relates to the technical field of heat-shrinkable films, in particular to a heat-shrinkable polyester film and a preparation method thereof. Background technique [0002] Heat shrinkable film is a film that is stretched and oriented during production and shrinks when heated during use. The most obvious feature of heat shrinkable film is that it has a larger shrinkage rate than ordinary films. Generally, it must have a heat shrinkage rate of 30%-80% to be called a heat shrinkable film. Heat shrinkable film is mainly used for shrink packaging and shrink labels. It is widely used in food, beverage, daily necessities, electronic appliances, machinery and other industries. It is especially suitable for external labels such as various cans, polyester bottles, and various containers. ; In addition, heat shrinkable film can also be used as high-grade packaging, printing, electronic appliances, cable wrapping, insulation materials and high-qualit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L23/12C08K3/36C08K3/22C08J3/22C08J9/10B29B9/06B29C69/02B29C55/06
CPCY02P20/50Y02P70/10
Inventor 不公告发明人
Owner NINGBO CHANGYANG TECH
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