With the rise of e-commerce, the use of cartons is increasing. Most products are packed in cartons, including fruits, fast food and other foods. The following is a detailed analysis of what kind of cartons can be used to pack food.
1、 Barrier performance
Paper and paperboard are porous fiber materials, which have a certain degree of permeability to water, gas, light, grease, etc., and their barrier properties are greatly affected by temperature and humidity, so they can meet their barrier performance requirements through appropriate surface processing.
2、 Processability
Paper and paperboard have good processing properties, can be folded, and can be sealed in a variety of ways. It is easy to process into packaging containers with various properties, and it is easy to realize mechanized processing operations. In addition, through proper surface processing, it can provide necessary moisture resistance, insect resistance, barrier, heat sealing, strength and physical properties for paper and paperboard, and expand their scope of use.
3、 Mechanical properties
Paper and paperboard have certain strength, stiffness and mechanical adaptability, and their strength mainly depends on the paper material, quality, thickness, processing technology, surface condition and certain temperature and humidity conditions; In addition, the paper also has certain folding, elasticity and tearing properties, which is suitable for making shaped packaging containers or wrapping.
4、 Health and safety performance
In the process of paper processing, especially chemical pulping, certain chemical substances are usually left. Therefore, various kinds of paper and paperboard must be selected correctly and reasonably according to the contents of the package.
5、 Printing performance
Paper and paperboard have strong ability to absorb and bond ink and good printing performance, so they are often used as printing surfaces on packaging. The printing performance of paper and paperboard mainly depends on the surface smoothness, sizing, elasticity and adhesion.
