Packaging bag formula analysis and component detection

I. Brief Introduction to Food Packaging Bags

Food packaging bags are a type of packaging bag designed to facilitate the preservation and storage of food in daily life. They refer to film containers that come into direct contact with food and are used for preserving and protecting it. Food packaging bags can be classified into ordinary, vacuum, inflated, boiling, steaming and functional food packaging bags according to their application scope. In addition, there are others such as woven bags, paper bags, composite bags, paper-plastic composite bags, mortar bags, putty powder bags, snake skin bags, etc.

Ii. Classification of Packaging Bags

2.1 The processes are divided into: plastic packaging bags and composite packaging bags.

2.2 Raw materials are classified as: PE, PP and PVC, etc.

2.3 The shapes are classified as: straight tube bags, three-dimensional bags, sealed bags, etc.

Packaging bags made by combining various materials with different properties have the characteristics of physical protection, shell protection, unified packaging, information transmission, marketing, safety, convenience and partial control.

Plastic packaging bags include plastic woven bags and plastic film bags. The former has the characteristics of light weight, high strength and corrosion resistance. Plastic bags do bring convenience to our lives, but this temporary convenience brings long-term harm as they are difficult to degrade. Therefore, packaging bags should comply with the requirements of Standard GB21660-2008.