When choosing Film for food, factors such as food characteristics, packaging functional requirements, and environmental protection requirements need to be considered comprehensively. Different usage scenarios have different performance requirements for films, so the right material must be selected according to the specific application.
Ordinary food fresh-keeping packaging (such as vegetables, fruits, and cooked food)
For daily food preservation, such as the packaging of vegetables, fruits, and cooked food, polyethylene (PE film) is the most commonly used choice. PE film has excellent flexibility and can fit tightly to foods of various shapes to ensure the sealing of the packaging. In addition, it has excellent waterproof performance, which can effectively prevent the loss of food moisture and maintain the freshness of ingredients. PE film also has the advantage of low cost, which is very suitable for large-scale application in daily packaging needs such as supermarket cling film and food bags.

Microwave heating food packaging (such as fast food, frozen food)
If you need to package food that needs to be heated in a microwave, such as fast food or frozen food, polypropylene (PP film) is an ideal choice. PP film has outstanding heat resistance and can withstand high temperatures above 120°C. It is not easy to deform or release harmful substances during microwave heating. At the same time, PP film has high transparency, which makes it convenient for consumers to observe the state of food. Its good heat sealing performance also makes it suitable for making sealable microwave food bags to ensure that there will be no leakage during the heating process.

High barrier food packaging (such as cooked food, meat, cheese)
For foods that need to be kept fresh for a long time, such as cooked food, meat and cheese, polyvinylidene chloride (PVDC film) or aluminum foil composite film is the best choice. PVDC film has excellent oxygen and water vapor barrier properties, which can significantly extend the shelf life of food, and is particularly suitable for vacuum-packed meat products and cheese. Aluminum foil composite film provides a more comprehensive barrier effect, which can completely isolate oxygen, light and moisture, so it is often used in food packaging with high antioxidant requirements, such as coffee, tea and milk powder.

Heat shrink packaging (such as beverage bottles, meat trays)
In the field of heat shrink packaging, polyvinyl chloride (PVC film) or PET heat shrink film is a commonly used material. PVC film has good shrinkage performance and transparency, and is suitable for packaging beverage bottle labels or meat trays. PET heat shrink film has higher strength and is suitable for heavy packaging needs, such as shrink packaging of a whole box of mineral water. Both materials can fit the product tightly after heating, providing stable protection and beautiful appearance.

Puncture-resistant packaging (such as nuts, coffee beans, meat with bones)
For food packaging that requires puncture resistance, such as nuts, coffee beans or meat with bones, nylon film (Nylon Film) or PET composite film is an ideal choice. Nylon film has excellent tear and puncture resistance, which can effectively prevent the packaging from being punctured by hard food. PET composite film is often used for heavy packaging needs due to its high strength characteristics, such as frozen food bags or large-capacity coffee bean packaging.

Environmentally friendly and degradable packaging (such as fresh food and take-out boxes)
With the increase of environmental awareness, degradable films are more and more widely used in food packaging. PLA (polylactic acid) or PBAT degradable films are the main choices for environmentally friendly packaging. These materials can be naturally degraded under composting conditions, reducing the impact on the environment. They are suitable for disposable packaging scenarios, such as supermarket fresh food bags, takeaway food box lamination, etc., which can not only meet packaging needs but also reduce ecological burden.

7. Transparent high-gloss packaging (such as candy, snacks)
For food packaging that requires high transparency and gloss, such as candy and snacks, polyester film (PET film) or BOPP film is the first choice. PET film has extremely high transparency and gloss, which can enhance the appearance of the product. BOPP film (biaxially oriented polypropylene) is often used for high-end food packaging with color printing, such as puffed food bags and candy packaging, due to its excellent printing adaptability.