Plastic Bags - 50 micron (Plastic bags, poly bags, plastic packaging, 50 micron) Poly bags are plastic bags without handles that are usually used for packaging stock and are often sealed at the open end with a heat sealer. This type of bag is made with clear LD plastic for a smooth, glossy finish. 50 micron plastic is a medium gauge plastic for packaging a wide range of items. Available in packs of 100. Request a Quote for Printed Plastic Poly Bags With No Handles or Request a Quote for Plain / Custom Made Plastic Poly Bags With No Handles