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What are the materials of courier bags?

by:XCBIO     2021-09-01
Courier bags have the characteristics of low cost, convenient use and good waterproof performance. Courier bags are mainly used to pack various goods and materials in the express delivery industry. In addition to courier companies, many online shopping industries, such as Vipshop and JD, have gone back to order their own courier bags to improve their image and promote their brands.   There are two commonly used express bag materials: one is low-density polyethylene (LDPE), which is what we usually call PE; the other is high-density polyethylene, which is what we usually call polyoxyethylene. The difference between PE and PO express bags is: PE printing has brighter colors, better transparency, and softer; polyoxyethylene is relatively brittle and has good mechanical properties. Generally speaking, the main material used for domestic express bags is polyethylene, while abroad, polyethylene and polyolefin are the main materials used for express mail.  The conventional size of express bags is customized according to the actual needs of customers, but the thickness has a common thickness specification, usually used for express, postal, logistics and online shopping bags, usually 0.7mm. If the size of the courier bag is larger, the thickness can be appropriately increased to 0.8-1.0 mm. Courier bags can be printed with customized brand LOGO and advertising information. It can be widely used in express logistics, express delivery, postal services, online shopping, business express delivery, etc.   Express plastic bags all use one-time damaged seal spray glue technology, which is more viscous and resistant to damage. After the courier bag is sealed, the seal cannot be opened unless the courier bag is torn, which can prevent the items inside from being stolen or exchanged, and ensure the integrity and confidentiality of the items. The express bag can also be customized into multi-layer co-extrusion according to the customer's blown film color requirements to improve the visual maintenance level of the express bag and prevent the contents from being exposed.   The stronger the smell of the courier bag, the worse the material. Added other plastics. Some unscrupulous merchants deliberately add flavors to cover up the odor. Therefore, as long as it is an odorous courier bag, whether it is particularly smelly or particularly fragrant, it is harmful to the body. The better the surface gloss of express bags, the purer the raw materials, the higher the quality. Even if the outer layer is torn, the inner layer will be connected together during the tearing process, and a poor quality express bag will be torn in a straight line like a piece of paper. The above explanation is the material of the express bag, I hope it will be helpful to you after reading it. If you want to know more about the relevant information about the express bag, please contact customer service online or call the company’s service hotline (top right corner of the website) ) For consultation, we will wholeheartedly provide you with quality service!
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