"On analysis, it was found that eight units were manufacturing plastic bags more than the thickness and size prescribed in the law," an official from Delhi Pollution Control Committee (DPCC) said.
As per the norms, the minimum thickness of recycled bags and virgin bags shall not be less than 20 microns or any minimum thickness as specified by the government.
Action have been initiated against the defaulting units under the Water Act/Air Act as well as the Delhi Degradable Plastic Bag (Manufacture, Sale and Usage) and Garbage (Control) Act, 2000, the official said.
He added that the defaulters might face closure or follow the law.
As per the Act, recycled bags should be coloured and pigmented, and dyes used in manufacturing plastic bags should to be in accordance with the pigments and listed in Bureau of Indian Standards (BIS).
The government has also prosecuted more than 30 retail outlets across the city for selling goods in plastic bags.