A cast film machine is a specialized piece of equipment used for producing cast film. High-precision electronic ceramic cast film machines use alumina as the primary raw material for ceramic tape casting. The process begins with mixing finely ground powder with binders, plasticizers, dispersants, and solvents to form a slurry with a certain viscosity. The slurry flows down from the hopper and is scraped by a doctor blade at a controlled thickness onto a specialized carrier substrate. After drying and solidification, the film is peeled off from the substrate to form a green tape. The green tape is then subjected to processing steps such as punching, cutting, and lamination according to the final product’s dimensional and shape requirements, producing a blank preform ready for sintering. This process offers advantages such as low cost, high quality, non-toxicity, and a relatively simple production process.

Features of Domestic Cast Film Production Lines:

Domestic cast film production lines are available in film widths of 2500mm, 3000mm, 3500mm, and 5000mm. In terms of extruder configuration, they are available in three-layer, five-layer, and seven-layer versions.

A domestic cast film production line mainly consists of five parts: the extrusion section, casting section, corona treatment section, winding section, and electrical control section. Among these, the die section and extrusion section can be flexibly combined according to customer requirements, thereby meeting the diverse needs of a wide range of clients.

In addition, domestic equipment design keeps pace with international advanced standards. For example:

A. The unique back-pressure device design allows for free adjustment of the extruder pressure.

B. The unique screw channel design enables compatibility with different materials, achieving multi-purpose functionality with a single machine.

C. The roll channel design provides better cooling effects, more stable product quality, and higher output.

D. The line speed of domestic cast film production lines has reached 160–250 m/min.

Compared with imported equipment, domestic cast film production lines offer comparable high speed, stable performance, environmental protection, and energy efficiency. The product thickness ranges from 0.017 mm to 0.08 mm (calculated at the international standard thickness of 0.025 mm).