Phenol ketone products

Plastic rubber

Current Location： Home > News > Chemical Knowledge > Manufacturing method and process of BOPET film

[Chemical Knowledge]：Manufacturing method and process of BOPET film

Read： 619 Time：20months ago Source：Transform the World with Simplicity

The manufacturing method
of BOPET film
1. Introduction

BOPET (biaxially oriented polyester) film is a widely used chemical production raw material, with excellent physical properties and chemical stability, widely used in packaging, electronics, electrical, medical and other fields. This article will introduce the manufacturing method of BOPET film in detail.

2. Raw Materials The main raw material for preparing

BOPET film is polyester chips, usually polyethylene terephthalate (PET) chips. In the manufacturing process, it is also necessary to add some additives, such as antioxidants, antistatic agents, etc., to improve the performance of the film.

3. biaxial stretching process

1. Pretreatment: The polyester chip is heated to a certain temperature in a preheater to melt it, and the necessary additives are added at the same time, and then the impurities are filtered out through a filter.
2. Extrusion: The pretreated polyester melt is extruded through an extruder head to form a sheet of a certain thickness.
3. Longitudinal stretching: The extruded sheet is stretched by a longitudinal stretching device to increase its length and improve its longitudinal strength.
4. Transverse stretching: The longitudinally stretched sheet enters the transverse stretching device for transverse stretching to increase its width and increase its transverse strength.
5. Heat setting: The film after biaxial stretching enters the heat setting device, and its molecular structure is stabilized by high temperature to obtain the required physical properties and chemical stability.

4. Winding and Slitting

The heat-set BOPET film is wound into a roll, and then slitted according to customer needs to obtain products of different widths and lengths.

5. quality control

In the manufacturing process, it is necessary to strictly control the performance indicators of BOPET film, such as thickness, strength, transparency, thermal shrinkage, etc. At the same time, it is also necessary to monitor the environment and equipment in the production process to ensure the stability and consistency of the product.

6. environmental protection and sustainable development

With the improvement of environmental awareness and the requirements of sustainable development, the manufacturing process of BOPET film also needs to consider environmental protection and sustainable development. For example, environmentally friendly additives and raw materials can be used, production processes can be optimized, energy consumption and waste emissions can be reduced, and resource utilization efficiency can be improved.

7. conclusion The manufacturing method of

BOPET film involves multiple links and processes, and it is necessary to strictly control the quality and environmental factors of each link to ensure the performance and quality of the product. At the same time, we also need to pay attention to environmental protection and sustainable development, and promote the green development of chemical production raw materials.

Previous： The production and manufacturing method and process of polypropylene.

Next： The production and manufacturing method and process of low-pressure film.

News Categories