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sheet extrusion flat die

So it’s time for you to buy a new sheet extrusion flat die. What do you need to know to about current die design technology to make sure you get what you need and want from your supplier?

The purpose of a sheet extrusion flat die, of course, is to deliver a uniform flow of polymer across the exit of the die lip so that the film or sheet product is flat and the gauge is uniform. Because the die is “just a nozzle”—it simply takes what comes in and shapes and discharges it—it’s designed to “leak” uniformly. The ability of a die to deliver a uniform flow rate across the die lips is based on the internal shape and structure of the die. In so-called coat hanger dies, the shape of the triangular dam between the manifold and the exit, and the change in manifold diameter, determine the uniformity of flow. Alternatively, in an inverted preland die, the shape of the preland step determines the uniformity of flow across the die face.

Item Specification
Die steel P20/5CrNiMo
Material PVC
Width of the die 500mm-5000mm
Thickness of the product 1-20mm adjustable
Choked flow rope 90°
Way of flow passage clothes rack type
voltage 220V/50hz
Heating type heating inside 
Heater element stainless steel heating rod
Mode of connection closed cycled connection
Fastening piece 12.9 high strength
Precision of polishing Polishing precision of the stream surface of the die lip 0.03-0.04(μm)other parts is 0.04-0.05(μm)
Galvanization  the stream surface of the die head are treated by chrome treatment. Thickness 0.03-0.04(μm),hardness: 60-65Rockwellc,the chrome treatment thickness of the ektexine is 0.01-0.02mm.
Installation according costumer’s request
Way of charging central ring charging way

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As one of screen changer manufacturers in China, Batte supplies extrusion screen changer, especially hydraulic screen changers.