PVC Heat shrinkable cap
seals are put on the cap portion of the package ( bottle / Jars )
& shrunk by application of indirect heat.
Here for Technical Guidelines.
Here for the various Applications.
PVC, Heat Shrink, shrinkable, Lay Flat, Tubings, Sleeves, Cap Seals, Seal, Pack, Packing, Printing, Color, Colour, Roto-gravure, Skin pack, Labels, Manufacturer of PVC Heat Shrinkable Lay-Flat Tubing, Film, Sheet, Neck Sleeves, Cut bands, Rolls, Pouches, Insulation, Preform Cups, Nishant