Composite screw co-extruder
A technology of screw extruder and extruder head, applied in the field of compound co-extrusion screw extruder, can solve the problems of affecting the appearance and quality of products, large equipment investment, large floor space, etc., to improve product processing quality, Ease of maintenance, increased conveying capacity and yield
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Embodiment 1
[0018] Embodiment 1: Extrude the composite sheet with the compound co-extrusion screw extruder of the present invention, the first layer is polypropylene PP, the second layer is polyethylene PE, adopts compound co-extrusion sheet head, outer screw diameter D 1 =120mm, aspect ratio ( L D ) 1 = 25 : 1 , Internal screw D 2 =65mm, aspect ratio ( L D ) 2 = 28 : 1 The outer screw extrudes polypropylene (PP), the inner screw extrudes polyethylene (PE), the outer screw rotates under the drive of the motor, the outer screw speed n 1 =20~40r / min, the internal screw is fixed on the stator. The barrel is a segmented barrel, and the temperature of each s...
Embodiment 2
[0019] Embodiment 2: Extrude the composite pipe with the composite co-extrusion screw extruder of the present invention, the first layer A is polypropylene (PP), the second layer B is polyethylene (PE), and the composite co-extrusion pipe head is adopted, External screw diameter D 1 =90mm, aspect ratio ( L D ) 1 = 25 ; Internal screw D 2 =45mm, aspect ratio ( L D ) 2 = 28 , The material PP is extruded by the external screw, and the material PE is extruded by the internal screw. The internal screw and the external screw are driven by their respective motors to perform reverse rotation, and the external screw speed is n 1 =20~40r / min, internal screw speed is n 2 = 0 ~ 30r...
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