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Introduction to materials used in various express delivery bags and bags

source:other news release time:2023-10-13 Hits:    


Express bags and express bags can be roughly divided into: express rubber bags (plastic express bags), express document bags (paper express document bags), express bubble bags (composite bubble bags), express bone bags, etc. according to the materials used.

1、 Material of delivery bags (plastic delivery bags): Polyethylene (PE) can be divided into low-density polyethylene (LDPE) and high-density polyethylene (HDPE), which have advantages such as low cost and light weight. The difference between LDPE and HDPE delivery bags is that LDPE has good contrast in brightness and softness, and the printing color is bright and bright; HDPE has relatively outstanding mechanical properties; In China, LDPE is used as the main data for express delivery bags, while in foreign countries, LDPE and HDPE composite are usually used as the main data for express delivery bags.

2、 Material of express delivery document bags (paper express document bags): usually made of gray background white board paper, white cardboard, and kraft cardboard. The courier profession usually uses paper weighing between 200 grams per square meter and 450 grams per square meter, and the courier document bag has a flat and upright feature.

3、 Express Bubble Bag (Composite Bubble Bag) Material: A transparent soft packaging bag filled with air in the middle layer of the air cushion film, mainly used for packaging small, fragile, and easily damaged goods in the express industry. The express delivery bubble bag is equipped with a shock absorbing bubble film, which contains many small bubbles, making it lightweight and elastic. It has outstanding shock absorption, impact resistance, non-toxic, odorless, moisture-proof, and corrosion-resistant advantages.

4、 Material for express bone bags: Bone bags (also known as compact bags, self sealing bags, sealed bags, chain clamping bags, and self sealing bags) are made of polyethylene (LDPE) and high-pressure linear polyethylene (LLDPE) through blow molding, hot cutting machine bags, and a plastic bag that can be repeatedly sealed. Bone bags can be used for surface and inner packaging of various small items. The self sealing bags produced with food grade materials can store various small foods, tea, seafood, etc., which are moisture-proof, waterproof, insect proof, and prevent things from scattering.


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