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Finishing studies on polyurathene (PU) and shellac coats on teak and deodar surfaces

Author Affiliations

  • 1Forest Products Division, Forest Research Institute, Dehradun-248006, India
  • 2Forest Products Division, Forest Research Institute, Dehradun-248006, India
  • 3Forest Products Division, Forest Research Institute, Dehradun-248006, India
  • 4Forest Products Division, Forest Research Institute, Dehradun-248006, India

Int. Res. J. Biological Sci., Volume 6, Issue (9), Pages 22-25, September,10 (2017)


The present study stresses that the softwood and the hardwood have different properties and require the distinctive finishing application. In this study, two finishes Polyurethane (PU) and Shellac have been used on two species, i.e., softwood Deodar and hardwood Teak. The study is based on the coat thickness of the finish. The samples were analysed after applying the finishing material on daily basis. The observations revealed no significant increase in coat thickness up to first three coats, after wards the thickness increases gradually. However, in polyurethane application, this phenomenon is not observed. In polyurethane, the thickness increase is observed to be gradual from the first coat.


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