General Info

Preparation of Coatings Trial
  • Mixing of the Paint
    • General appearance of the paint, NO settling and NO separation NO Foaming, NO floatation.
    • Check temperature of the shop floor.
    • Mix the paint in barrel for 15-20 minutes by slow speed stirrer.
    • Check settling
    • Continue mixing for 15 minutes
    • Check temperature of paint.
    • Check viscosity
    • Adjust viscosity if required by adding the thinner
    • Install cleaned pump.
    • Attach filter bag to the feeding pipe.
  • Paint flow
    • Maintain regular paint flow.
    • Paint should be in good flow from barrel to Paint Tray and from Tray to Barrel back.
    • Check for the Foam generation and avoid foam to transfer to coating rolls.
    • Paint Temperature as mentioned in TC
    • Place the baffle so that the return paint does not get picked up any contamination or foam.
  • PMT and OVEN TEMPRATURE SETTING
    • Zone-wise oven setting.
    • Maintain the temperature profile record.
    • PMT strips Should be available during trial.
  • Paint Application in lab
    • Check all the properties in Lab by applying the paints in Lab.
    • Check the Curing by PMT check.
    • Curing & Paint adhesion by Solvent rub MEK test
    • Pencill hardness
    • Scraatch test as per customer.
  • General Test to be conducted in LAB
    These test are require for all Primer/ Topcoat & Back Coat.
Test results CUSTOMER SPECIFICATIONS LAB RESULTS
General appearance
D.FT.
Gloss
Cure(solvent rubs)
Reverse Impact Flexibility
Reverse Impact Adhesion
Distension
Pencil Hardness
T-Bend Flexibility
T-Bend Adhesion
Colour std. ref.
T/C  
B/C
Other    
Remarks: