Trachoma and rotten loan of beef packaging bags are common quality problems of flexible packaging products. Aluminum foil bags are currently commonly used packaging materials for flexible packaging. They are usually composed of PET/AL/BOPA/CPP. shading and high shade. However, it is easy to form pinholes after tortuous and cause product spoilage. The trachoma and rotten bags in beef packaging bags are mainly caused by: 1. The product is squeezed by rubbing the bag during bagging or vacuuming; 2. The vacuum sealing is not good, and it is not completely sealed; 3. The product is punctured by sharp objects; 4. The product has friction and impact during loading, unloading and handling. More information on packaging bags, customized packaging bags: