Biodegradable packaging plastic bags are thermoplastic resin bags polymerized from ethylene. PE bags are transparent plastic bags; industrially, they also contain copolymers of ethylene and a small amount of α-olefins. Biodegradable plastic bags can be used for packaging garments, bags, electronic products, etc. Classified by material, biodegradable packaging plastic bags include different types of PE: LDPE, LLDPE, HDPE, etc.

Classified by manufacturing process, biodegradable packaging plastic bags consist of PE flat bags, self-sealing bags, slider zipper bags, envelope bags, punched handle bags, loop handle bags, and zipper bags. The PE flat bags produced by biodegradable packaging plastic bag manufacturers adopt a simple manufacturing process. After being blown by machines, the film is cut into individual bags one by one on a bag-making machine and then sealed at the bottom.

The self-sealing bags produced by biodegradable packaging plastic bag manufacturers are sealed with plastic strips during film blowing, allowing for easy manual sealing. They are often confused with slider zipper bags, but the two are different. Slider zipper bags are made from PE film and two separately produced slider chains. Usually, there are relatively wide indentations on both sides of slider zipper bags, which are not present on self-sealing bags. Self-sealing bags are printed with a small number of colors, while slider zipper bags can be printed with complex patterns.

The envelope bags produced by biodegradable packaging plastic bag manufacturers are designed with an envelope-like flap attached with an adhesive strip for fold-over sealing. They are widely used in the garment packaging industry; in fact, express packaging bags are also a type of envelope bag. Punched handle bags are made by punching a hole at the top of a flat bag for easy carrying.

Loop handle bags are manufactured by adding plastic film strips to the top of the bags to facilitate lifting. This process requires substantial labor input, resulting in relatively high costs. Zipper bags are equipped with zipper chains and zipper sliders at the opening. Biodegradable plastic bags can decompose naturally in the environment; under the action of microorganisms, they can be converted into water, carbon dioxide, and nutrient-rich fertilizer.

The above is the basic classification of biodegradable packaging plastic bags. We hope this information is helpful to you. If you want to learn more about biodegradable packaging plastic bags, please consult our online customer service or call our company's service hotline. We are committed to providing you with high-quality services!

Article Title: Basic Classification of Biodegradable Packaging Plastic Bags URL: https://en.szxylp.com/technical-data/basic-classification-of-biodegradable-packaging-plastic-bags.html