WENZHOU BOJING PLASTIC MOULD CO., LTD.
WENZHOU BOJING PLASTIC MOULD CO., LTD.

How to Choose a Blown Film Die Head?

Sep 25, 2024

What Is a Blown Film Die Head?


As the most critical component of a blow film machine, the die head's role is to distribute the melt, transforming the cylindrical melt from each extruder into a tubular melt extrusion at the die exit, and then extruding the molten plastic material and blowing it into a film. During the film-blowing process, the die head not only needs to distribute the molten plastic evenly within the mold but also needs to adjust its structure and relevant parameters to ensure that the film's thickness, width, and other specifications meet production requirements. The blown film die head generally consists of a die core, die sleeve, pressure ring, and adjustment ring.


How to Choose a Blown Film Die Head?


Matching Production Needs


First, clarifying blown film extrusion machine parts needs is the first step in choosing a blown film die head. Based on the specific parameters of the film type, width, thickness, and other details required for production, we need to find the corresponding blown film die head. The die head's specifications and model directly impact the film's forming effect, making it crucial to select the appropriate blown film die head.


Material and Durability


The material of the blown film die head is directly related to its durability and lifespan. High-quality blown film die heads are usually made of high-strength, corrosion-resistant materials, such as stainless steel or special alloys, to withstand high temperatures and the erosion of plastic materials. Choosing a durable blown film die head can reduce maintenance costs and improve production efficiency. For instance, BOJING blown film die heads are reliable and trustworthy.


Precision and Uniformity


The processing precision and flow channel design of the blown film die head are crucial for the film's uniformity and quality. High-precision die heads can ensure that the molten plastic is evenly distributed during extrusion, reducing defects such as uneven film thickness and ripples. Therefore, when selecting a blown film die head, we need to pay special attention to its precision and the rationality of its flow channel design.


Adaptability and Flexibility


The blown film die head should have the appropriate adaptability and flexibility to meet the production needs of different specifications and types of films. For example, a blown film die head with adjustable width can quickly adjust the film's width according to production needs; a multi-layer co-extrusion die head can produce multi-layer composite films to meet more diversified market demands.


Brand and After-Sales Service


When choosing a blown film die head, brand reputation and after-sales service are also important factors. Well-known brands can ensure the quality and performance reliability of the blown film die head and provide timely and effective technical support and solutions when problems arise. Therefore, when selecting a blown film die head, we should prioritize suppliers with a good brand reputation and excellent after-sales service. BOJING, as a renowned blown film die head supplier, has demonstrated outstanding capabilities in product quality, technological innovation, product variety, and after-sales service. These advantages make BOJING stand out in the industry and become a trusted partner for many customers.