The event was held at the Eros Hotel in Nehru Place which was attended by entrepreneurs and professionals of the industry.
Multi-layered plastic packaging will come under category three and plastic sheet or like used for packaging as well as carry bags made of compostable plastics fall under category four.
Topics discussed at the free workshop attended by 90 participants included packaging for food industry for dairy, handicraft, hosiery, sports goods and pharma products.
An inauguration ceremony was held at the IIP campus where GGSIPU Vice-Chancellor Mahesh Verma was the chief guest along with other dignitaries from the university.
All the people rescued from the building were taken to different hospitals for treatment as many of them received injuries during the rescue process, the official said.