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The manufacturing method of polyester bottle sheets 

Polyester bottle sheets are a chemical raw material widely used in the fields of packaging, fibers, and non-woven fabrics. With the continuous growth of market demand, the manufacturing methods of polyester bottle sheets have also been continuously developed and optimized. This article will introduce the production process, raw material selection, equipment configuration, and other aspects of polyester bottle chips

1、 The production process of polyester bottle chips mainly includes steps such as esterification, condensation, and slicing. The specific process is as follows: 

1 Esterification reaction: Add dicarboxylic acid and diols in a certain molar ratio to an esterification reactor for esterification reaction, generating oligomers

2. Polycondensation reaction: The oligomers are transferred into a polycondensation reactor and undergo polycondensation reaction at high temperature and high vacuum to generate high molecular weight polyester

3. Slicing: Cut the polyester melt into sheets of a certain length and thickness using a slicing machine to obtain polyester bottle sheets

2、 The main raw materials for manufacturing polyester bottle sheets are dicarboxylic acids and diols. Commonly used dicarboxylic acids include terephthalic acid, isophthalic acid, etc; Commonly used diols include ethylene glycol, propylene glycol, etc. When selecting raw materials, the following factors need to be considered: 

1 Purity: The higher the purity of the raw material, the better the quality of the polyester bottle produced

2. Cost: The prices of different raw materials vary and need to be selected based on production costs and requirements

3. Accessibility: It is necessary to consider the source and supply of raw materials

3、 Equipment configuration 

The production of polyester bottle chips requires the use of a series of equipment, including esterification reactors, condensation reactors, slicers, conveying pumps, vacuum systems, etc. When selecting a device, the following factors need to be considered: 

1 Production capacity: It is necessary to select appropriate equipment models and specifications according to production requirements

2. Automation level: Equipment with high automation level can improve production efficiency and quality, and reduce labor costs

3. Safety: It is necessary to select equipment that meets safety standards to ensure safety during the production process

4、 Production precautions 

1 Control reaction temperature and pressure: Esterification and condensation reactions need to be carried out at a certain temperature and pressure, and strict control of reaction temperature and pressure is required to ensure the smooth progress of the reaction

2. Control of raw material ratio: Different raw material ratios can affect the molecular weight and performance of polyester, and it is necessary to strictly control the ratio according to production requirements

3. Keep the equipment clean and hygienic: The residues and pollutants inside the equipment can affect the quality and production efficiency of polyester bottle chips, and regular cleaning and maintenance are required

In summary, the manufacturing method of polyester bottle chips needs to consider factors such as production process, raw material selection, equipment configuration, etc., to ensure that the produced polyester bottle chips have the advantages of high quality and low cost, and meet market demand.