EPE Foam Profile Tube Rod Extrusion Machine

This machine can produce EPE tube, rod and profile through melting LDPE resin and then mixing it with butane gas, talcum powder, anti-shrinkage agents and other agents, then, the mixed material come out through the extruder and foam in the die part, then cool down and form, finally, it is pulled by 4 wheels to make the final product (can be rewinded in rolls). This machine adopts nitrated alloy screw, V.F. speed-regulation, cast aluminum heating ring, and automatic temperature controller, etc. Features: 1.Screw: 38CrMnALA nitrated steel, + heat-treatment (quenching and nitrogen treatment) + surface chrome plated, with the features of more stronger and tougher to longer the screw’s life time. Screw dia.: φ105mm, length: 4740mm (two-stage type). L/D is up to 45:1, increasing the screw’s plasticizing capacity and quality. 2.Barrel: 38CrMnALA nitrated steel + heat treatment (quenching and nitrogen treatment) can prevent damage of long-term use. The barrel connects with feeding part and die part through flange plates. 3.Feeding part: the feeding part connects with barrel and gearbox separately in the two ends. The raw material is sent to extruder from this part. Users should keep continuous circular water for this part, to prevent temperature rise, which may lead to sticky and blocky raw material, and which may further cause jam in the feeding mouth. 4.Main motor for extruder: The main motor is speed-adjustable DC motor. Model: 4～2000～31; main power: 55kw, with air cooling (fan). The main motor is connected with the main screw by gearbox. 5.Butane input and butane pump: high-pressure dosing pump. This pump presses the liquefied butane into barrel at pressure of 1015Mpa (100--150kg/cm2). Butane and the melted LDPE mix with each other in the barrel. There is one-way valve where butane enters barrel to ensure melted LDPE not reverse back when barrel’s pressure is higher than butane’s pressure to reach safe production. 6.Anti-shrinkage input and anti-shrinkage pump: anti-shrinkage pump heats the anti-shrinkage at pressure of 10 15Mpa (100 150mm/cm2) and then press it into the barrel. Melted anti-shrinkage and LDPE are mixed in the anti-shrinkage agent’s feeding part, where there is one-way valve ensurethe melted LDPE not reverse back when barrel’s pressure is higher than anti-shrinkage agent’s pressure to reach safe production. 7.Die part: melted raw material is extruded from this part. Raw material begins foaming as soon as it arrives the die lip. The EPE foam sheet thickness is decided by die lip and pulling speed. 8.Sizing drum: EPE foam sheet width is decided by this part, so cooling water and cooling air should be supplied here. 9.Pulling roller: the sheet expanded by sizing drum enters this part for pulling. At this time, pulling speed must be average to ensure sheet quality. Pulling roller diameter length is φ480 1550mm, with speed-adjustable motor to adjust the pulling speed. 10.Translocation-type rewinding roller: in this part, there is meter counter which can set the sheet length. When the first rewinding roller arrives the preset length, it can turn over 180° and the second rewinding roller begins to rewind. Parameters model 90 105 120 70 screwL/D 1:55 1:55 1:55 1:55 Productioncapacity 80-120kg/h 100-150kg/h 120-180kg/h 40-80kg/h productdia. 20-90mm 30-110mm 50-130mm 15-50mm foamefficiency 20-47 20-47 20-47 20-47 coolingway aircooling totalpower 70kw 85KW 98KW 60KW Screwspeed 20-80rpm 20-80rpm 20-80rmp 20-80rmp Dimension 10000×2300 ×2200mm 11000×2500 ×2200mm 15000x2500x2200mm 8000x2200x2200mm weight 4.5T 5.5T 6.5T 4.2T