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710*2200 High Production Two Roll Rubber Mixing Mill Machine 5.5kw Synchronous Motor

Categories Rubber Mixing Mill Machine
Brand Name: RUNNING
Model Number: XK-450
Certification: ISO, CE
Place of Origin: QINGDAO, CHINA
MOQ: 1 SET
Payment Terms: L/C, T/T, D/P
Supply Ability: 10 sets/month
Delivery Time: 30~40days
Roller material: Chilled cast iron
Motor power: 55kw
Frame material: Cast iron or Welded steel
Lubrication: Bearing with grease lubrication
Roller gap adjust method: Synchronous motor
Stock blender: Optional
Gear box: Hard-teeth speed reducer
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    710*2200 High Production Two Roll Rubber Mixing Mill Machine 5.5kw Synchronous Motor

    710*2200 High Production Two Roll Rubber Mixing Mill Machine 5.5kw Synchronous Motor


    Application:


    1. Automobile,motorcycle and bicycle tires and tubes.
    2. Rubber shoes,soles and heels.
    3. Rubber rafts,P.V.C sheet,artificial leather.
    4.Rubber/EVA sponge soles.
    5. Rubber rain boots and rain wear.
    6. Rubber nipples.sports balls.
    7. Rubber rollers,rice rollers.
    8. Rubber goods for industry.
    9. Rubber goods for automobiles.
    10. V-belt and conveyor belts.
    11. Rubber cushions.
    12. Regenerating rubber.

    The mixing is often done on a two-roll mill (open mill). A mill consists of two horizontally placed hollow metal cylinders (rolls) rotating towards each other. The distance/gap between the mill rolls (nip) can be varied, typically between 2 to 20 mm.


    STEPS IN MASTICATION AND MIXING


    Mastication Operation


    Set the roll nip opening to 2 mm. Adjust and maintain roll temperature at 7±5 degrees C. Add rubber into the mill nip and band, as a continuous sheet, onto the front roll. Using a hand knife, make two-cuts from each side and allow the rubber to move through the nip quite a few times until a smooth rolling bank is formed on the nip. Now the rubber is sufficiently masticated and thus becomes softer at a reduced viscosity.


    Initial Addition of Ingredients


    Set the nip opening to 2.5 mm. Add activators (and antidegradants if synthetic rubber) to the rolling bank. Make two-cuts from each side. Cut through the rubber at one end of the roll, remove it, and place it in the nip at the other end, to ensure a homogeneous end-to-end blend.


    Addition of Fillers


    Increase the nip size to 3 mm. Add fillers. If large amount of fillers is to be added, divide it into 2 or 3 equal parts and add sequentially. For large amount of filler formulation pour on processing aids/plasticisers (oils) incrementally (as are the fillers), after most of the fillers have been mixed in. After each addition of filler portion make three -cuts from each side and again cut through the rubber at one end of the roll, remove it, and place it in the nip at the other end.
    Note well that antioxidants may inhibits oxidative breakdown of rubber, they should be added late during mixing of natural rubber. It is advisable to add antioxidant just before the addition of sulphur and accelerator. But with synthetic rubbers an early antioxidant addition can avoid cyclization. (Reference: Moneypenny H, Menting K, Grag F. General Compounding, Rubber Compounding Chemistry and Application 2004 (373); Ed., Brendan Rodgers.)


    Addition of Curatives


    Add sulfur and accelerator toward the end of the mixing process to avoid premature cross-linking reaction. Make two -cuts from each side and again cut through the rubber at one end of the roll, remove it, and place it in the nip at the other end.


    Sheet Out


    Sheet out the compound by pressing it with your hands against the roll and allow it to roll back into itself to become a long cylindrical roll. Set the nip size to 8 mm and maintain the roll temperature at 70±5 degrees C . Pass the rolled batch endwise through the mill nip 6 times. This is a homogenization step.
    Weigh the rolled batch to measure actual batch weight and % weight loss.
    % wt loss = {(theoretical batch wt - actual batch wt) /theoretical batch wt} x 100
    Adjust the nip size to give a sheet with minimum thickness of 6 mm when the compound is sheeted out of the mill.

    Salient Features


    1. Superior Mixing Performance.
    2. Low Operating Cost with High Productivity.
    3. Compact Construction, maximum Floor Utilization.
    4. Latest Technology Update, Meets Current World Standards.
    5. Maintenance Free.
    6. Reliable and Experienced Service Back Up.
    7. Easy to Install & Ready to Run.
    8. No continuous Lubrication hence heavy saving on lubrication cost, wear & tear and maintenance.
    9. Auto reversing electric Panel.
    10. Simple & easy maintenance.


    Technical Parameters



    ItemXK-160XK-250XK-360XK-400XK-450XK-550XK-560XK-660XK-710
    Roll diametermm160250360400450550560-510660710
    Roll working length
    320620900100012001500153021302200
    Front roll linear speedr/min916.316.719.321.822.527.22831.9
    Speed ratio of rolls
    01: 01.401: 01.101: 01.301: 01.301: 01.301: 01.201: 01.201: 01.201: 01.5
    Max roll spacemm4.5810101216150.5-150.5-15
    Compound feeding capacitykg1-210-1520-2518-355050-6550-65165190
    Motor powerkW5.518.530455511090240280
    Dimensions(L× W× H)









    Lmm113327224200492054056646627072808185
    Wmm92011151780178017402736228234003910
    Hmm139413451760180017902105200025302270
    Gross weightT~2~3.2~6.5~8~11.4~22~22.5~49~51





    Services Commitment


    1. Our engineers can design target machines for you and send the drawing to confirm.
    2. In the process of production, we will take photos and send to customers for you tracking.
    3. Documents such as packing list, commercial invoice, and bill of lading etc. will be sent after the delivery.
    4. We could supply free English foundation DWG, installation drawing, user guide, maintenance manual and part drawing.
    5. We supply overseas technical support
    6. Test Machine Before Delivery, you only need to connect the wires to the outside the control cabinet.



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