First let’s take a look at what materials are available for food packaging:
Generally used materials are PET film, PE film, PA film, OPP film and CPP film.
Their respective characteristics:
PET film: This film is ultra-transparent, hard, high temperature resistant, and has good printing effect. It is more suitable for outer packaging bags of food. The PET film feels very crisp to the touch, and it can make a rustling sound when held in the hand.
PE film: The transparency is slightly inferior to cpp, but softer than cpp. PE film has better tensile properties and better breaking force. There are two types of milky white PE and transparent PE (HDPE/LDPE/LLDPE), which are soft to the touch.
PA film (nylon): PA material is relatively tough, transparent, wear-resistant and puncture-resistant, easy to be oxidized, easy to shrink and wrinkle, this material is suitable for heavy or thorny, relatively hard products.
OPP film: The material is hard and cannot be stretched. The heat-sealing type is very good, but the transparency is average, the material is brittle, and the hand feel is poor.
CPP film: The transparency of CPP material is worse than OPP but better than PE. The material is soft and resistant to high temperature. It is often used for packaging food that needs to be cooked.
Common food packaging bags are generally composed of the above materials:
- Material: BOPP/LLDPE two-layer composite
Features: Moisture-proof, cold-resistant, low-temperature heat-sealing and strong tensile force
Application: instant noodles, snacks, frozen snacks, powder packaging, etc.
- Material: BOPP/CPP two-layer composite
Features: Moisture-proof, oil-resistant, high transparency, good stiffness
Application: instant noodles, biscuits, candies, all kinds of light food
- Material: BOPP/VMCPP composite
Features: Moisture-proof, oil-resistant, oxygen barrier, light-shielding, good stiffness
Application: All kinds of dry food, fried food, potato chips
- Material: BOPP/VMPET/LLDPE three-layer composite
Features: moisture-proof, oxygen barrier, UV protection.
Application: all kinds of food, rice snacks, snacks, tea
- Material: PET/CPP two-layer composite
Features: moisture-proof, oxygen barrier, fragrance preservation, high temperature resistance
Application: steaming, alcoholic food, aroma food
- Material: PET/PET/CPP three-layer composite
Features: Moisture-proof, high temperature resistance, easy to seal
Application: powder packaging, soy sauce, liquid, shampoo
The above material combinations are only common among thousands of different combinations of plastic materials. Qingdao Xintongda Plastic Products Co., Ltd. focuses on food plastic flexible packaging, using the fresh new materials and the most environmentally friendly and healthy materials. Welcome to contact us for quotation.
