Poly Mailers Envelope Express Shipping Bag Plastic Courier Mailing Bag

Courier bags refer to the bags used in the express industry to transport documents, bills, materials, goods, etc. At present, plastic express bags made of polyethylene materials are more commonly used, which have the characteristics of low cost, convenient use and good waterproof performance.

Courier bags are manufactured from 60-100micron thickness to extruded polyethylene film(Fresh HDPE&LDPE material),which is gray/black inside&white outside(colour can be changed as per requirement),and It is made of poly film , by special machinary, which is co-extruded from many kinds of plastic resins between each layer of the co-extruded poly film, so there is no pungent smell, no residue of organic solvent and no permation of harmful solvent on the bag.So the mailer bag is a safe and environmentally-friendly product which is widely used and can be recycled.

The bags contains a flap which has a hot melt adhesive strip for easy&permanent closure.and designed an open “one side flap” for protecting goods security,which an adhesive that is applied to the seal flap and is covered with a release liner. When the envelope is ready to be sealed, the release liner is removed to expose the self-adhesive tape.The self-adhesive tape will immediately sealing the plastic envelopes and firmly sealed. Side pocket is also available at the back of the courier/mailing/express bags to insert the shipping label.

The design of its envelop flap and self-adhesive sealign tape enables customers fast and simple sealing as well as prevents others from tampering the inside packed items.Courier bags can be used for product packaging or protection. It is generally used for couriers bags, wrapping bags, garment bags, plastic bags, mailing bags, waterproof bag or anti-theft bags. Our courier bags are moisture-proof, waterproof, dustproof, anti-load, protection strong and self-adhesive.