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Thermo-shrinkable polyester mono-layer film

一种聚酯类、热收缩的技术，应用在聚酯类单层膜领域，能够解决不合意、热收缩膜低隐藏能力、降低广告效果等问题，达到良好印刷外观、防止废水、高隐藏能力的效果

Active Publication Date: 2012-12-19
KOLON IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although paper labels can hide such adhesive marks, heat-shrinkable films have low hiding power and thus such marks appear as they are, undesirably reducing advertising effectiveness

Method used

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  • Thermo-shrinkable polyester mono-layer film
  • Thermo-shrinkable polyester mono-layer film
  • Thermo-shrinkable polyester mono-layer film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] (1) 100mol% of terephthalic acid as a dibasic acid component, 100mol% of ethylene glycol as a dibasic alcohol component, and 24mol% of 2,2-dimethyl (-1,3 -propane) diol, and 0.05 mol of antimony trioxide (for the acid component) as a catalyst for polycondensation, thereby producing 2,2-dimethyl (-1,3-propane) diol copolyester.

[0106] (2) Put a mixture of 2,2-dimethyl(-1,3-propane)diol copolyester and titanium dioxide particles (particle size: 0.5 μm) into a twin-screw extruder or kneader, and melt it and mixed to obtain polyester-based masterbatch chips containing particles. The above-mentioned masterbatch slices containing particles are then subjected to an anti-sticking treatment using a grinder equipped with a screw such that an extremely small roughness. As such, milling was performed at room temperature, 1750 rpm, 45A, and a rate of 2 ton / hr.

[0107] The prepared masterbatch chips were precrystallized at 130°C and dried at 160°C to dehydrate them. Thus, the...

Embodiment 2～10

[0115] Except changing the mole % of 2,2-dimethyl(-1,3-propane)diol in 2,2-dimethyl(-1,3-propane)diol copolyester as shown in Table 1 below , the size of the particles used in the masterbatch chips, the amount of particles in the film, the TD stretching temperature, and the heat treatment temperature, a heat-shrinkable film was prepared in the same manner as in Example 1. The properties of these films are shown in Table 3 below.

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Abstract

The present invention relates to a heat-shrinkable polyester-based single-layer film which has superior shrinkability and color, and thus provides aesthetic enhancement to the product to which the film is attached when the film is printed. Therefore, the polyester-based single-layer film of the present invention can be valuably used as a label film as it can replace labels made of paper, and can be easily peeled off by means of hot water, thus contributing to the recycling of bottles.

Description

technical field [0001] The invention relates to a heat-shrinkable polyester monolayer film. Background technique [0002] Considering environmental requirements and profitability, PET or glass bottles have been collected and reused. When reusing, it is necessary to separate and remove the label with the printed product name, ingredients and other graphics other than the bottle body of the PET bottle or glass bottle from the bottle. In particular, paper labels, which have been mainly used so far, are removed using industrial water. Specifically, collected PET bottles or glass bottles were dipped in industrial water at about 80° C. containing sodium hydroxide to remove labels from the bottles. Therefore, the reuse of these bottles creates environmental wastewater, which is regulated by environmental regulations. [0003] Therefore, there is an increasing demand for film labels instead of paper labels. [0004] Examples of films that can be used as labels include polyvinyl ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L67/03C08K3/22C08J3/22B29C48/08
CPCB29C61/003B29C55/026B29C61/00C08J3/226B29C55/08B29K2067/00C08J2367/00C08J5/18B29K2105/16B29C61/06B29C48/08B29C48/914B29C48/9165
Inventor 金允照金东珍金时敏
Owner KOLON IND INC
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