Patkar Extrusions Ltd. Supplies Casting Polypropylene made Blister Film. Patkar Extrusions Ltd. Manufactures a wide range of Stretch and Cling Films in various thickness and sizes for application in Packaging Industries. The Casting Polypropylene made Blister Film is a speciality film made from premium polypropylene resin and is used for making bubble pack pouch. The Casting Polypropylene made Blister Film is available in clear, hazy and white opaque form with the thickness of up to 400 microns and Width of up to 650 mm.