A courier bag refers to a bag used to transport and deliver items, documents, materials, goods, etc. Express bag material: a bright flexible packaging bag filled with air in the middle layer of air cushion film. It is mainly used for the packaging of small, fragile, easily damaged, and poor-quality goods in the express delivery industry. The Zhongzhou express bag is equipped with a shock-absorbing bubble film. There are countless small bubbles in the bubble film, so it is light and elastic, and has the advantages of outstanding shock absorption, impact resistance, harmlessness, tasteless, moisture resistance, and corrosion resistance.

Most express bags are made of waterproof and confidential materials, the traditional ones are: polyethylene plastic express bags or polyethylene and polyethylene co-extruded films. Polyethylene is widely used in China, while the latter is common in Europe and North America. But either way, it's waterproof, and it's a one-time process of breaking the seal. Express bags are divided into plastic bags, document seals, bubble bags, bone bags, woven bags and other express packaging bags.

The material of the courier bag: low-density polyethylene is usually called PE, and high-density polyethylene is usually called PO. Express plastic bags have the advantages of low cost and light weight. The difference between polyethylene and polyoxyethylene in express plastic bags is that polyethylene has better transparency and softness, and the printing color is more vivid. Polyoxyethylene has good mechanical properties. In China, polyethylene is used as the main material of express mail, while in foreign countries, polyethylene and polyoxyethylene are used as the main material of express mail.

Bubble express bag: a transparent flexible packaging bag filled with air by a layer of air cushion film in the middle. It is mainly used in the express industry to package small, fragile, easily damaged, and low-precision goods. Shock-absorbing bubble wrap is attached to the quick bubble bag. There are countless small bubbles in the bubble film, so it is light and elastic, and has the advantages of good shock absorption, impact resistance, harmlessness, tasteless, moisture resistance, and corrosion resistance.

Self-sealing courier bags, also known as compact bags, are composed of sealed bags, chain clip bags and self-sealing bags. Polyethylene and High Pressure Polyethylene are blown and heat cut to form resealable plastic bags. Bone bags can be used for inner and outer packaging of various small items. The self-sealing bag made of food-grade raw materials can store various small foods, tea, seafood and more. They repel moisture, water, bugs, and keep things from falling around.

Woven courier bags, also known as snakeskin bags, are used for packaging. Its raw materials are polyethylene, polypropylene and other chemical plastic materials. Woven bags are generally white or gray, harmless and tasteless, and generally less harmful to the human body. Although they are made of various chemical plastics, they are more environmentally friendly and more recycled. Woven express bags are mainly used for assembling and packaging various items and have a wide range of industrial applications.

The above is the practicability of the courier bag. I hope it will be helpful to you after reading it. If you want to know more about the courier bag, please consult the customer service online or call the company's service hotline for consultation. We will wholeheartedly provide you with quality service!