Standard packing method for express bags?

The express bags are classified into express plastic bags, express document seals, express bubble bags, express bone bags, express woven bags, etc.
1. Material of express plastic bag: PE commonly referred to as low density polyethylene (LDPE), PO commonly referred to as high density polyethylene (HDPE). The express plastic bag has the advantages of low cost and light weight.
The difference between PE and PO in express plastic bag: PE has good transparency and softness, and the printing color is bright; PO has good mechanical properties; PE is generally used as the main material in domestic express bags, while PE and PO are generally used as the main material in foreign express bags.
There are two categories of polyethylene express bags in the market: one is new material express bags (such as Shunfeng Express bags, FedEx bags, Zhaijiesui bags, etc.), and the other is recycled material express bags (such as those used by small express companies such as Lianhaotong)
2. Materials of express document seals: generally, gray background white board, white cardboard, kraft linerboard, mostly. The express industry generally uses paper weighing from 200g/m2 to 450g/m2. The express document seal has the advantages of being flat and not easy to break compared with the express plastic bag.
3. Material of express bubble bag: a transparent soft packaging bag filled with air from the middle layer of air cushion film It is mainly used for packaging small, fragile, easily damaged and less precise goods in the express industry. The express bubble bag is equipped with a shock absorption bubble film. There are countless small bubbles in the bubble film, so it is light and elastic, with good shock absorption, impact resistance, non-toxic, tasteless, moisture-proof, corrosion resistance and other advantages.
4. Material of bone bag for express delivery: bone bag (also known as compact bag, which consists of random bag, sealed bag, chain clamp bag, self sealing bag, English: Ziplock bags, reusable bag, Zipper Closure Bag, Resealable Bag), a kind of plastic bag that can be repeatedly sealed, made of polyethylene (LDPE) and high pressure linear polyethylene (LLDPE) through blow molding and hot cutting machine bag. Bone bag can be used for inner and outer packaging of various small items. The self sealing bags made of food grade raw materials can store all kinds of small food, tea, seafood, etc., and prevent moisture, water, insects and things from scattering.
5. Express woven bag: also known as snake skin bag. It is a kind of plastic used for packaging, and its raw materials are generally polyethylene, polypropylene and other chemical plastic raw materials. The woven bag is generally white or grayish white, non-toxic and tasteless, and generally less harmful to human body. Although it is made of various chemical plastics, it has strong environmental protection and recycling efforts; It is mainly used for packaging and packaging of various articles, and is widely used in industry.