Basic knowledge of packaging bags-classification of packaging bags
Packaging bags are everywhere in our lives. With the improvement of living standards, the quality of packaging bags is gradually improving. Diversified packaging bags enrich our lives. Let’s introduce our inseparable packaging bags. Some basic knowledge, classification of packaging bags.
According to different raw materials, packaging bags can be roughly divided into the following types:
1. PE packaging bag: PE is the abbreviation of polyethylene, which is a kind of thermoplastic resin made by polymerizing ethylene. In industry, it also includes copolymers of ethylene and a small amount of α-olefin; the finished product is a transparent plastic bag, which can be used in the packaging of clothing, luggage, electronic products, etc., with various styles and qualities, and a wide range of applications. The craft can be divided into: PE flat bag, ziplock bag, zipper bag, envelope bag, punching tote bag, handle tote bag, zipper bag, PE film, etc.;
 
2. OPP packaging bag: OPP is polypropylene, two-way polypropylene, has the characteristics of high transparency, relatively brittle, easy to use, beautiful and generous, widely used in clothing, food, printing, stationery, cosmetics, paper and other industries. It can also print various patterns and punch butterfly holes, airplane holes, etc. according to customer needs;
 
3. Aluminium foil bag: Aluminium foil bag is a bag made of multiple plastic films after being combined by a bag making machine. It can be used for packaging food, medicine and a variety of daily necessities. Aluminum foil bag is also called pure aluminum bag, aluminum foil bag Packaging usually refers to aluminum-plastic composite vacuum packaging bags. Such products are suitable for moisture-proof, light-proof and vacuum packaging of large-scale precision machinery, chemical raw materials, and pharmaceutical intermediates. It mostly adopts a four-layer structure, which has good water and oxygen barrier functions. Its characteristics can be made into various packaging bags, and can be customized in different sizes and styles. It can also be made into flat pockets, three-dimensional bags, organ bags and other styles;
 
4. Kraft paper bag: Kraft paper bag is a kind of packaging bag made of all natural wood pulp. It is green and environmentally friendly and has no pollution. It is in line with the current country's environmental protection requirements. It can be made into waterproof, moisture-proof, and air-tight according to specific needs. Various packaging bags, used in food, supermarket shopping bags, clothing and other industries;

5. Aluminum-plated bag: It is a composite packaging bag with many advantages. Its production cost is relatively low, and the printing is exquisite. This type of packaging bag is anti-static, anti-ultraviolet, moisture-proof, oxygen-proof and shading, cold-resistant, oil-resistant, high-temperature, fresh-keeping and oxygen-proof. It is easy to seal and can be used in food, daily chemical, pharmaceutical, chemical and other industries. It can be made into self-supporting bags, special packaging bags, etc.
 
That's it for our introduction today, welcome to browse and learn from each other, professional production packaging