What materials are commonly used for printing food grade plastic packaging?

In the field of food grade plastic packaging printing, it is crucial to choose the appropriate materials, which not only affect the appearance and attractiveness of the packaging, but also are closely related to the safety of food and the health of consumers. Here are some commonly used food grade plastic packaging printing materials and their characteristics:
1、 Polyethylene (PE):
Characteristics: PE has excellent crystallinity, transparency, and chemical stability, and can withstand most acid-base corrosion.
Application: Widely used in food plastic packaging, especially in plastic bags, cling film, and inner plastic packaging film.
2、 Polypropylene (PP):
Characteristics: PP has higher transparency, stronger luster, and good mechanical properties, heat resistance, and chemical resistance. It can be continuously used at 120 ° C and is the only plastic product that can be heated in a microwave oven.
Application: Commonly used in food specific plastic bags, plastic preservation boxes, takeaway packaging boxes, plastic tableware and other products.
3、 Polyethylene terephthalate (PET):
Characteristics: PET has good transparency and luster, as well as high barrier properties, which can effectively block oil and air.
Application: Widely used in food packaging that requires high barrier properties.
4、 Polyvinylidene chloride (PVDC):
Features: PVDC has good airtightness, flame resistance, corrosion resistance, safety and environmental protection, and meets food hygiene requirements.
Application: Due to its excellent airtightness and corrosion resistance, PVDC is widely used in the packaging of food and beverages.
5、 Nylon (PA):
Characteristics: PA material has high temperature resistance, puncture resistance, good oxygen barrier performance, and does not contain harmful components.
Application: Due to its excellent heat resistance and oxygen barrier properties, PA is used as a food packaging material.
When choosing food grade plastic packaging printing materials, their printing suitability also needs to be considered. Different materials have different adsorption and drying abilities for ink, so it is necessary to choose ink and printing processes that match them.
In addition, attention should be paid to the environmental friendliness and sustainability of the materials. With the increasing awareness of environmental protection in society, more and more companies are paying attention to the environmental performance of packaging materials. Therefore, choosing environmentally friendly materials such as recyclable, biodegradable, or bio based plastics will become a trend in the future.