<Zhenfeng Machinery>specializes in producing various models of blown film machine heads, which are plated with hard chromium and have a spiral core shaft structure for uniform and smooth discharge.


The blown film mold head consists of two parts: the mold body (mold core, mold cylinder, mold ring) and the heater (heating ring).


The first step is material selection, which involves choosing the appropriate materials.
The second step is forging, which involves forging the material into rough blanks for each part of the mold. The molecular structure of the forged blanks is denser.
The third step is to carry out lathe machining. According to the design drawings of the mold head, the mold head should be machined. During lathe machining, high-precision lathes and experienced lathe masters should be used as much as possible.
The fourth is polishing, polishing the flow channel part of the car's mold. The better the smoothness, the better the blown film, and the less silk there is.
The fifth is chrome plating, which involves coating the flow channel of the polished mold with a hard layer of chromium, increasing the wear resistance and corrosion resistance of the mold head, and then polishing it to make the mold less prone to damage and less prone to retained coke.
The sixth step is to install the various parts of the mold and then install the heating ring, which is considered to be completed.


The die head structure is optimized and shaped based on the characteristics of LDPE, HDPE, and LLDPE polyethylene through multiple comparative tests. It has the advantages of high internal pressure, stable and uniform extrusion, good film strength performance, and seamless matching with the extruder of this unit. Simultaneously changing the proportions of three types of polyethylene, mixed materials, and recycled materials for blown film production does not require changing the mold head.


Our company has been committed to the research and manufacturing of blown film machine heads. We can design and customize products of different specifications according to customers' actual requirements to meet their special needs. Our company has strong technical strength, advanced production equipment, a high-quality workforce, and a huge sales network. In order to further improve after-sales service, the company has established a complete industrial platform and a nationwide after-sales service management system, providing high-quality and comprehensive services to new and old customers anytime and anywhere. Sincerely welcome you!