Toning method for PET bottle-grade polyester chip

A polyester chip and color oil technology, which is applied in the field of color matching in the preparation process, can solve the problems of stable influence of dosage production process, high yellow index, large hue fluctuation, etc., and achieves uniform and beautiful appearance, good gloss, The effect of low temperature

Inactive Publication Date: 2008-09-03
海南盛之业高新技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hue of the product obtained by this coloring method fluctuates greatly, the yellowness index is high, and the acetic acid solution contains metal components, the product is easy to gray, the dosage needs to be strictly controlled and has a certain impact on the stability of the production process

Method used

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  • Toning method for PET bottle-grade polyester chip
  • Toning method for PET bottle-grade polyester chip
  • Toning method for PET bottle-grade polyester chip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] During the preparation of PET bottle-grade polyester chips, ethylene glycol is added to the blending tank, and ethylene glycol is used as a carrier. Purple oil and blue oil are added to ethylene glycol at a temperature of 65°C, and mixed evenly , with a concentration of 0.03‰ and 0.08‰, respectively, and then transported to the supply tank for storage, and continuously added from the pipeline to the production of bottle flake polyester.

Embodiment 2

[0023] During the preparation of PET bottle-grade polyester chips, ethylene glycol is added to the blending tank, and ethylene glycol is used as a carrier. Purple oil and blue oil are added to ethylene glycol at a temperature of 70°C and mixed evenly , with a concentration of 0.08‰ and 0.05‰, respectively, and then transported to the supply tank for storage, and continuously added from the pipeline to the production of bottle flake polyester.

Embodiment 3

[0025] In the preparation process of PET bottle-grade polyester chips, ethylene glycol is added to the blending tank, and ethylene glycol is used as a carrier, and purple oil and blue oil are added to ethylene glycol at a temperature of 80 ° C, and mixed evenly , with a concentration of 1.3‰ and 1.5‰, respectively, and then transported to the supply tank for storage, and continuously added from the pipeline to the production of bottle flake polyester.

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Abstract

The invention discloses a toning method of PET bottle class polyester chip. During preparing the PET bottle class polyester chip, the ethylene glycol as carrier is added into blending jar and then the oil is added into ethylene glycol and the mixture is uniformly blended and then conveyed to a supplying jar to store, and the mixture is continuously added to the production of bottle class polyester by tube, so that the purple agent content of the product is 1-5ppm, the purple agent content is 1-5ppm. The technological process is simple and oil blending temperature is low, suitable for reducing the energy consumption, and the cost is saves, therefore the brightness of the product is good and the appearance color is more uniform, beautiful and stable.

Description

technical field [0001] The invention relates to a method for preparing bottle-grade polyester chips, in particular to a method for toning during the preparation of PET bottle-grade polyester chips. Background technique [0002] PET bottle-grade polyester chips, because of their low acetaldehyde content, good heat resistance and thermal stability, pressure resistance, acid and alkali resistance, etc., have been used in mineral water, practical oil, fruit juice, tea, soft drinks and other food and beverages in recent years. Packaging aspects are widely used. And because of its light density, high strength, non-toxicity and other excellent properties, it can replace PP, PEP, PVC and other thermoplastic materials in some non-food fields. [0003] At present, the preparation of PET bottle-grade polyester chips is based on purified terephthalic acid (TPA), isophthalic acid (IPA) and ethylene glycol (EG) as raw materials, through direct esterification and continuous polycondensati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K5/00C08G63/78C08G63/183
Inventor 陈铨吴鸿儒吴坤成程琦赟
Owner 海南盛之业高新技术有限公司
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