Listing ID #3838891
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Contact SupplierRFL dipped fabrics are the backbone of high quality rubber products like tyres, conveyor belts, diaphragms, floats etc. For different applications and different fabrics, the lines can be designed as dip – Stretch lines or Stretch – dip lines or a combination of both. For heavier fabrics, the line could be double dip – stretch Line.
Dipping Lines are generally put together using the following individual components.
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Unwinder / Let-Off |
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Fixed dual stations or Turret type unwinders with brakes or AC vector drive for tension control. Closed loop control with load cell feedback provide required tension to process both light and heavy fabrics. |
  Accumulators   Tension Stacks and Cooling Rollers Perfectly Matched machining and grinding for perfect alignment of rolls, bearings and gears. Each tension stack can be equipped with an automatic lubrication system for the gears. The number and size of tension  stack  rollers  and  bearing  is  determined  by  load requirements.  Double  shell  cooling  rolls  are  provided  to  cool the web after  the oven with the  cooling water moving in a spiral between the two walls. For machines with lower production requirements or for lighter fabrics the cooling rollers can be combined with tensioning rollers. A series of vertical dryers heated by direct fired modulating gas burners, supplied for use with  sulphur  free  Natural  Gas.  Can be precisely controlled to obtain drying and heat setting temperatures within required tolerance. The radial blowers circulating the air in the  treatment  chamber are directly coupled  to  inverter controlled  AC motors to obtain the required air velocity.  The web passage through the dryer is vertical and the turning rollers are water cooled. For light belting and chaefer fabrics, the line is equipped with a stenter to impart weft wise stretch to the dipped fabric during the heat setting operations. Edge Trimmer Several slitting options offered for edge trim, including trim removal. For Chafer Fabrics, an ultrasonic Fabric sealing device can be provided prior to the fabric slitter. Wind-up Turret type or stationary surface windup to match individual process requirements. The precise Surface Winders produce rolls up to 2000 mm diameter and ensures a finished roll with straight edges within a close tolerance. Drive The machine is equipped with AC inverter drives having Vector control technology to provide the highest level of accuracy and are controlled by a PLC to maintain speed and tension. Controls Defect free fabric needs constant tension and must be perfectly centered and properly guided throughout its run in the machine. Load cells provide closed loop control for tension. Centering arrangements, web aligners and expanders are provided as required by the process and the fabric. PLC with an HMI monitors and records process information. Controlling these critical and crucial functions via recipe management, SWASTIK RFL Dipping Lines assure consistent process conditions one lot after another, year after year. The recipe manager automatically sets speed, temperature, tension, and other variables to simplify operations. The operator interface (HMI) is an easy-to-use, intuitive graphic colour display. Modem communication can be provided for remote diagnosis. |