Nowadays, the business is constantly developing, and the application of vacuum packaging bags is becoming wider and wider. The vacuum bag has an excellent preservation effect, especially for food. The material of the vacuum bag is generally divided into PP and PE. What is the difference between the two? next, I would like to introduce this to you:
First, different uses
Polyethylene (PE) is widely used in the manufacture of vacuum bags, plastic films, milk buckets, etc. Polypropylene (nylon) is widely used in industry, and third. The most rare polymer materials are used to make various adhesive tapes. It has made tremendous contributions to the flexible packaging industry such as food and beverage.
Second, the chemical structure is different
Polyethylene is polyethylene, first. A simple polymer containing O. A repeating CH2 unit, which is an addition of ethylene. pp refers to a semi-crystalline thermoplastic.
Third, its characteristics are different
Polyethylene is odorless, non-toxic, feels like wax, second. Good low temperature resistance, PE vacuum bag can reach a minimum temperature of 70~100 degrees. Polyethylene has good chemical stability and can withstand most acid and alkali corrosion. It is insoluble in common solvents at normal temperature, has small water absorption and good electrical insulation properties, but has poor heat resistance. Polypropylene has high impact resistance, strong mechanical properties, resistance to various organic solvents and acid-base corrosion.
Dongguan Bite Packaging Materials Co., Ltd. is a large-scale company specializing in the production of food-grade composite packaging. It is a professional composite packaging bag manufacturer that uses new equipment to produce packaging bags and film rolls to provide comprehensive, environmentally friendly and safe packaging services for the market. The company produces composite bags, film, fruit bags, aluminum foil bags, nozzle bags, stand-up bags, zipper bags, anti-static bags, shaped bags, etc., suitable for food, daily chemicals, electronics, toys, medicine, cosmetics, industrial products, etc. Internal and external packaging for various industries. We adhere to the business philosophy of good faith cooperation, high quality and considerate service, and have been recognized by the industry. Our products are sold all over the world. Welcome friends from all walks of life to inquire, visit our factory for inspection and business negotiation.