Ester Industries shares rallied more than 12 percent intraday Monday on patent filing and planning to set up R&D centre.
Sameer Banerjee, Wholetime Director in an interview to CNBC-TV18 said, "This is a good period of the year for us, the festival season is approaching and the demand for both polyester films and BOPP films is good. So, we are expecting our margins to improve further.