The materials used in common food packaging bags are divided into six categories:
1. Material: duBOPP/LLDPE two-layer composite
Features: moisture-proof, cold-resistant, low-temperature heat-sealing, strong tensile force
Uses: dao instant noodles, snacks, frozen snacks, powder packaging, etc.
2. Material: BOPP/CPP two-layer composite
Features: moisture-proof, oil-resistant, high transparency, good stiffness
Uses: instant noodles, biscuits, candy, all kinds of light food
3. Material: BOPP/VMCPP composite
Features: moisture-proof, oil-resistant, oxygen barrier, shading, good stiffness
Uses: all kinds of dry food, fried food, potato chips
4. Material: BOPP/VMPET/LLDPE three-layer composite
Features: moisture-proof, oxygen-proof, shading
Uses: all kinds of food, rice snacks, snacks, tea
5. Material: PET/CPP two-layer composite
Features: moisture proof, oxygen barrier, fragrance preservation, high temperature resistance
Uses: cooking, alcoholic foods, flavored foods
6. Material: PET/PET/CPP three-layer composite
Features: moisture resistance, high temperature resistance, easy sealing
Uses: powder packaging, soy sauce, liquid, shampoo
Food packaging bag function:
The food stored in the packaging bag should avoid squeezing, impact, vibration, temperature difference and other phenomena.
The shell can separate food from oxygen, water vapor, stains, etc., and leakage prevention is also a necessary factor in packaging design. Some packages include desiccants or deoxidizers to extend shelf life. Vacuum packaging or removing the air from the packaging bag is also the main food packaging method. Keeping food clean, fresh and safe during the shelf life is the primary function of the packaging bag.
Stuffing small objects of the same type into one package is a good way to save volume. Powder and granular objects need to be encapsulated.
Packaging and labels tell people how to use, transport, recycle, or dispose of packaging or food.
Marketing often uses box labels to encourage potential buyers to buy goods. Packaging design has become a pivotal and constantly changing phenomenon for decades. Marketing communications and graphic design are applied to the outer box and (for some reasons) the highlights of the sales presentation.
Packaging can play an important role in reducing transportation safety risks. Packaging bags can also prevent food from being included in other commodities. Food packaging can also reduce the possibility of food being stolen. Some food packaging is strong and has anti-counterfeiting labels, which protect the interests of businesses from loss. The packaging bag can have laser marking, special color, SMS authentication and other labels. In addition, in order to prevent theft, retailers have affixed electronic monitoring labels on food packaging bags, waiting for consumers to get them at the outlet of the store for demagnetization.
The packaging may be easy to add, load and unload, stack, display, sell, open, repack, use and reuse.
A single package helps to accurately control the overall situation. For example, the amount of stock can be known when salt is packed into the package. It also makes it easy to calculate sales, such as the delivery and recycling of milk bottles by dairy companies instead of letting consumers fill them themselves.