Device features:

The mold’s die orifice features a high opening ratio and smoother transition curves. This design effectively reduces discharge resistance, prevents blockages or backflow of high-moisture materials at the die head, and ensures smooth material discharge and stable product shape.

The inner flow passages of the mold are precision-polished to a mirror-like finish. This significantly reduces the risk of adhesion by highly moist materials, ensuring a smooth product surface and facilitating easy cleaning. As for materials, high-grade stainless steel is often selected and further enhanced with robust anti-corrosion treatments to resist corrosion from high moisture levels as well as potential salts and acids.

Given the characteristic of low resistance during extrusion of high-moisture materials, the length of the die’s sizing zone (working zone of the die orifice) is specifically optimized. This zone does not need to be excessively long to ensure stable product shape. Such a design not only guarantees proper forming but also further reduces the accumulation of die head pressure and energy loss.

Although high moisture reduces friction, to accommodate long-term, continuous industrial production, molds employ wear-resistant alloys or undergo surface nitriding treatments in critical wear areas. Additionally, the overall mold structure is ensured to have sufficient rigidity to withstand the working pressure of the extrusion machine and maintain dimensional accuracy over the long term.

To accommodate the production of multiple product categories, high-humidity extrusion dies are often designed with a modular structure. By quickly swapping out different die head templates—such as circular, square, or custom-shaped ones—it is possible to flexibly adjust the final shape and size of the products, thereby enhancing the equipment’s versatility and production efficiency.