In modern industrial production, high-temperature release film is an important industrial material widely used in various processing techniques, such as hot pressing, welding, and coating. Its main function is to prevent the processing material from adhering to the mold surface in high temperature environments, thereby improving production efficiency and product quality. The performance stability of high-temperature release film largely depends on its production process.

High temperature release films need to maintain stable performance in high-temperature environments, which mainly includes the following aspects:

High temperature resistance: High temperature release films must be able to withstand high temperatures without softening, deformation, or degradation, ensuring reliability during processing.

Release effect: The film material needs to effectively prevent the processing material from adhering to the mold surface at high temperatures, maintaining a good release effect.

Chemical resistance: The film material should be able to resist the erosion of various chemical substances, including acids, bases, and solvents, to prevent chemical reactions from affecting the performance of the film material.

Mechanical strength: Film materials need to have sufficient mechanical strength to withstand the pressure and wear that may occur during high-temperature processing.

The production process of high-temperature release film includes steps such as raw material selection, film material preparation, coating process, and post-treatment. Each step has a significant impact on the performance stability of the film material.

The production raw materials of high-temperature release film are the key factors determining its performance. Common high-temperature release film materials include silicone, PTFE, and high-temperature resistant polyester. Silicone has excellent high temperature resistance and can remain stable at temperatures up to 300 ° C. Its excellent release performance and chemical resistance make it widely used in the production of high-temperature release films. PTFE has excellent high temperature and chemical resistance, and can work stably at temperatures up to 260 ° C. Its low friction coefficient makes it perform well in the demolding process. High temperature resistant polyester film material has good high temperature resistance and mechanical strength, suitable for some medium to high temperature application scenarios.

Choosing appropriate raw materials is the first step in ensuring the stability of high-temperature release film performance. The quality of raw materials directly affects the high temperature resistance, release effect, and mechanical strength of membrane materials.

Film preparation is the core process of high-temperature release film production, mainly including material mixing, extrusion molding, and coating processes.

Material mixing: Mix the selected raw materials evenly to ensure consistent performance of the membrane material. The temperature and time control during the mixing process have a significant impact on the performance of the membrane material.

Extrusion molding: The mixed material is extruded into shape using an extruder to form the initial shape of the film material. The temperature and pressure control during the extrusion process are key to ensuring the uniformity and stability of the film material.

Coating process: Apply a protective layer on the surface of the formed film material to improve its release effect and chemical resistance. The coating process includes the selection of coating materials, coating methods, and coating thickness. In the process of membrane preparation, it is necessary to strictly control the process parameters to ensure the stability of film performance.

The post-processing process includes steps such as curing, annealing, and quality inspection of the film material, which have a significant impact on the final performance of release film.

Curing: The material in the film is further cross-linked through a curing process to make its properties more stable. The temperature and time control during the curing process are key to ensuring the high temperature resistance of the film material.

Annealing: Annealing process is used to eliminate internal stress in film materials, improve the mechanical strength and stability of film materials. The control of annealing temperature and time directly affects the final performance of the film material.

Quality inspection: Conduct strict quality inspections on film materials, including high temperature resistance testing, release performance testing, and chemical resistance testing, to ensure that the materials meet production requirements.