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Waldron, Reverse Roll Coater, 1995, 60" Width, 3-Roll System, 10" Roll Diameter

Waldron, Reverse Roll Coater, 1995, 60" Width, 3-Roll System, 10" Roll Diameter

Description

  1. Overview
    1. Waldron - Ross Air Systems reverse roll coating station
    2. Brand: Waldron
    3. Model: Reverse roll coater
    4. Year: 1995
    5. Condition: Used
    6. Width: 60.0 inches
    7. 3-roll system
    8. Reverse roll coaters meter an accurate thickness of coating between two precision chilled iron rolls and apply the pre-metered coating to the web
    9. The amount of coating applied is controlled by the opening between the metering and applicator rolls and by the speed of the applicator roll which rotates reverse to the web
    10. Water-based coating
    11. (2) chilled iron rolls, (1) rubber-covered backing roll
    12. Wedges for precision micrometer adjustment between metering rolls and backing roll
    13. Reverse roll coating stations apply a wide range of coatings in viscosities of 50 to 200,000 cps, from 100% to less than 10% solids
    14. Servo driven motorized wedge block gap adjustment between applicator roll and metering roll
    15. Applicator roll can be controlled automatically through gauging system
    16. Automatic running adjustment of coat weight applied
    17. Applicator roll is fixed
    18. Metering roll is air-loaded against the applicator roll
    19. Backing roll is air-loaded against the applicator roll
    20. Gap adjustment between backing roll and applicator roll is done manually
    21. Gap adjustment between metering roll and applicator roll is done remotely with servo drives
    22. Drives are sized for up to 200 fpm
    23. Metering and applicator rolls 10” diameter, chilled iron accurately ground to a t.i.r. of.00015 or better and mounted in precision anti-friction bearings
    24. These (2) rolls are positioned to form a coating fountain consisting of the rolls and a slurry box where coating is put
    25. Applicator roll is fixed in position and the metering and backing rolls are adjusted to it
    26. Backing roll is 12.5” diameter, elastomer covered
    27. On top of the coating station is a pre-metering system which can be used if needed or can be removed
    28. Pre-metering system allows pre-metering of coating material before it goes into the dam for the 3-roll reverse roll coating station
    29. Originally had gap control between the applicator and metering roll and this was done through a beta gauge system
    30. (2) servo motors with controllers to control the gap adjustment
    31. Schmidt couplings are provided for the metering roll, applicator roll and backing roll
    32. Dodge reducers
    33. Reliance variable speed ac vector drives
    34. 460 volt, 3 phase, 60 cycle
    35. (4) motors; (3) 5 hp and (1) 15 hp reliance motors, ac variable speed
    36. Each roll in this system has a drive motor
    37. All rolls are 66” wide
  2. Included
    1. (3) spare rolls, (1) applicator roll, (1) metering roll and (1) backing roll
  3. Condition
    1. Machine is in excellent mechanical condition