PVC vacuum formed film, also known as polyvinyl chloride vacuum formed film, is a thin film made by vacuum forming PVC material. The production process mainly includes the following steps:
1、 Raw material preparation
The production of PVC vacuum formed film first requires the preparation of raw materials such as PVC resin, stabilizers, plasticizers, etc. These raw materials are proportioned and processed to ensure the quality and performance of the product.
2、 Mixed plasticization
Send the prepared raw materials into the mixing and plasticizing equipment, and mix them thoroughly through heating and stirring to form a uniform melt.
3、 Extrusion molding
Feed the melt into the extruder and form a thin film of a certain thickness through the extrusion mold. This step requires controlling parameters such as temperature, pressure, and speed to ensure the thickness and uniformity of the film.
4、 Cooling and shaping
Send the extruded film into a cooling water tank and rapidly shape it through cooling. The control of cooling rate and temperature greatly affects the physical properties of the film.
5、 Traction winding
Send the cooled and solidified film into the traction winding machine, and use traction force to evenly roll the film, preparing for subsequent printing, lamination, and other processes.
The characteristics of PVC vacuum formed film mainly include:
1. Chemical resistance: PVC vacuum formed film has good chemical resistance and strong resistance to most solvents, acids, and bases.
2. Weather resistance: PVC vacuum formed film has good weather resistance, suitable for outdoor environments, and is not easily aged or deformed.
3. Impact resistance: PVC vacuum formed film has good impact resistance and can withstand certain external forces.
4. Machinability: PVC vacuum formed film is easy to print, composite, cut and other processes, meeting different packaging needs.
5. Environmental friendliness: PVC vacuum formed film is recyclable and meets environmental protection requirements.
With the continuous development of the packaging industry, the application of PVC vacuum formed film in the packaging field is becoming increasingly widespread. The continuous optimization of its production process and characteristics has provided more possibilities for the packaging industry. In the future, PVC vacuum formed film will continue to leverage its advantages in the packaging field and lead the new trend of packaging.
Summary:
PVC vacuum formed film, as an important packaging material, its plastic production process and characteristics are crucial for ensuring product quality and meeting market demand. By understanding the production process and characteristics of PVC vacuum formed film, we can better leverage its advantages in the packaging field and promote the development of the packaging industry.
