Various types of courier bags, courier bags used in the introduction of the material

Courier bags, courier bags in accordance with the use of materials can be broadly divided into: courier bags (plastic courier bags), courier bags (paper courier bags), courier bubble bags (composite bubble bags), courier bags and other bone bags.

First, the courier bag (plastic courier bags) materials: polyethylene (PE) can be divided into low-density polyethylene (LDPE), high-density polyethylene (HDPE), with low cost, light weight and other advantages, LDPE and HDPE courier bag differences: LDPE brightness, softness contrast, print color contrast bright; HDPE has a comparison of outstanding mechanical properties; in the country, the courier bag is the use of LDPE as the main source of materials. Is the use of LDPE as the main material, while abroad, usually using LDPE, HDPE composite as the main material of the courier bag.

Second, the courier bags (paper courier bags) materials: usually gray background whiteboard paper, white cardboard, kraft paper mostly. Courier industry usually use 200 g / m2 to 450 g / m2 weight of paper, courier bags with flat, upright features.

Third, the courier bubble mailers (composite bubble mailers) material: the middle layer of the air cushion film filled with air, a bright flexible packaging bags, mainly used for express delivery of small volume fragile, fragile goods packaging. Express bubble bags with shock-absorbing bubble film, bubble film with many small bubbles, so light, flexible, with outstanding shock absorption, impact resistance, non-toxic, odorless, moisture, corrosion resistance and other advantages.

Fourth, the courier bone bag material: bone bag (also known as dense bag, by any bag, sealed bag, chain bag, self-sealing bag), polyethylene (LDPE) and high-pressure linear polyethylene (LLDPE) through the blown film molding, hot cutting machine bags, made of a plastic bag can be repeated sealing. Bone bags can be used for a variety of small items of surface and internal packaging. With food-grade materials produced by the self-sealing bags can host a variety of small foods, tea, seafood, etc., moisture-proof, waterproof, insect-proof, to avoid things falling apart.