The Treatments for PP bags
A Biaxially Orientated Polypropylene (B.O.P.P) film can be printed with a photographic quality and then adhered to a woven pp bag, which means 3-layer structure: fabric, lamination, BOPP film. Easy open feature.
Laminated or Coated:
A lamination is a thin coating of poly film which is adhered to either the inside or outside of the pp woven bag giving the fabric a resistance from humidity, also improves the fabric properties.
Sealed liner made of H.D.P.E. or L.D.P.E. Plastics can be inserted and sewn into the top hem of the bag. This prevents the liner from collapsing into the outer bag when filling with product and helps the egress of moisture.
WPP bags can be manufactured with the addition of U.V. Stabilization to protect and extend the effective lifespan of the bag.