Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method of polyester chip for shrink film

A technology of polyester chips and shrink films, which is applied in the field of preparation of polyester chips for shrink films, can solve problems such as increased recycling costs, serious environmental pollution, and difficulty in reusing polyester bottles, and achieves the effect of high heat shrinkage

Active Publication Date: 2015-08-26
TIANJIN HUAXIN YINGJU POLYESTER MATERIAL SCI & TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since PET is incompatible with PVC, PP, etc., it is difficult to recycle the polyester bottle after use, which increases the cost of recycling and causes serious environmental pollution.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Below in conjunction with specific embodiment the present invention is described in further detail:

[0022] The preparation method of polyester chips for shrink film of the present invention comprises the following steps:

[0023] (1) Put ethylene glycol into the beating kettle, then add terephthalic acid and 1,4-cyclohexanedimethanol into the beating kettle in sequence to make slurry;

[0024] (2) Put ethylene glycol into the catalyst preparation kettle, then add ethylene glycol antimony, stir evenly to make catalyst liquid;

[0025] (3) Put ethylene glycol into the additive preparation kettle, then add silicon dioxide, stir evenly to make additive liquid;

[0026] (4) Put the slurry in step (1) and the catalyst solution in step (2) into an esterification kettle, and heat for esterification;

[0027] (5) Import the reactant in step (4) into the diesterification tank, put in isophthalic acid, neopentyl glycol and the additive solution in step (3), and mix evenly;

...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
shrinkageaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of polyester slices for shrink films. The method comprises the following steps: reacting ethylene glycol with terephthalic acid and 1,4-cyclohexanedimethanol to prepare a slurry; adding ethylene glycol to ethylene glycol antimony to prepare a catalyst liquid; adding ethylene glycol to silica to prepare an additive liquid; heating the slurry and the catalyst liquid for carrying out a primary esterification reaction; adding m-phthalic acid, neopentylene glycol and the additive liquid to a secondary esterification kettle; introducing the obtained esterified material to a polycondensation kettle, and polycondensing to obtain a high-molecular polymer melt; and preparing slices in the cooling process. The polyester slices prepared through the method maintain the excellent performances of original polyester slices, and make polyester films have a high thermal shrinkage property, so the polyester films can substitute thermal shrinkage films of PVC, PE, PP and the like, and has the environmental protection characteristic. The polyester slices fill up the blank in China, and reach the international level of like products.

Description

technical field [0001] The invention relates to a method for preparing a polyester chip, in particular to a method for preparing a polyester chip for a shrink film. Background technique [0002] At present, the trademarks used for filling beverage bottles are all made of PVC, PE and PP shrink films to make strip labels after printing, and the labels are pasted on polyester bottles with adhesives and used after heating and shrinking. Because PET is incompatible with PVC, PP, etc., it is difficult to recycle the polyester bottle after use, which increases the recycling cost and causes serious environmental pollution. To change this situation, it is necessary to develop PET high-shrinkage polyester chips to replace PVC and PP and solve the real problem of environmental pollution. Contents of the invention [0003] The object of the present invention is to provide a method for preparing a polyester chip for shrinkable film with higher heat shrinkability, which can replace hea...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/199C08G63/86C08L67/02
Inventor 曹双存任大鹏王树刚
Owner TIANJIN HUAXIN YINGJU POLYESTER MATERIAL SCI & TECH