Nowadays, due to the release of the plastic restriction order and the growing voice of people for health and environmental protection, green and environmentally friendly paper packaging is widely used in people's daily life again. For example, in food-grade paper packaging applications, food packaging bags are widely used, ranging from oil-proof paper bags and snack bags for food stalls to food packaging, paper pads, and takeaway bags for McDonald's and KFC. Furthermore, it is printed in a variety of styles from the traditional style with a single color in the past to the present. So, what kind of paper are the food paper packaging used in the food market customized?
When customizing food packaging bags, there are many types of paper to choose from. There are four kinds of paper that are often used: kraft paper, coated paper, white cardboard, and offset paper. Different types of paper have different toughness, smoothness and aesthetics. When customizing paper bags, food packaging bag manufacturers will compare and choose according to the use of paper bags and the characteristics of different papers to meet customer needs.
Offset paper: The surface of the paper is white and smooth, but the whiteness, tightness and smoothness are lower than those of coated paper. It is suitable for printing monochromatic or multi-color book covers, text, inserts, pictorials, maps, posters, color trademarks and various In recent years, it has also been used to make dry fruit packaging bags such as chestnuts with low requirements.
White Cardboard: A single or multi-layer bond made from bleached chemical pulp and fully sized. White cardboard has a smooth surface and firm texture. At present, imported white cardboard occupies a larger market share in the domestic market. White cardboard is mainly used to make various handbags, packaging bags, gift boxes, business cards, etc.
Coated paper: The main raw materials are coated base paper and paint. Pigments, binders and auxiliary materials are made into coatings, which are coated on the surface of cardboard by special equipment, dried and calendered. The surface is smooth and clean, and the printing performance is good. Labels, cartons, etc.
Kraft paper: It is made of coniferous wood sulfate natural pulp, which is strong, usually yellowish brown, in addition to light brown, cream or white. The thickness is between 80 grams and 120 grams. Kraft paper has high tensile force, and has single light, double light, stripe, no grain, etc. It is mainly used to make environmentally friendly portable paper bags for supermarkets, food takeaway paper bags, packaging paper bags for chestnuts and other dried fruits, envelope bags, file bags, medical record bags, etc.
According to the different uses of the Paper Bag, the material of the packaging bag should have resistance to moisture, water vapor, gas, light and heat, etc., and have impact strength, vibration strength and packaging moisture, etc., and should be able to protect the packaged items. . Only in this way can people's requirements for packaging bags be met. When selecting materials, the toxicity of packaging materials should be small, especially food packaging bags, which cannot release poisons, otherwise it will affect the promotion and application of paper bags, and have anti-microbial properties, but the Paper Bag Machine makes packaging bags The material is made of paper, which can meet this condition. Packaging materials can be produced on a large scale, which can meet people's daily needs, reduce the price of materials, facilitate mechanization, automation, adapt to printing, and print logos on packaging bags. The resources are relatively abundant, and the materials are very convenient and the cost is relatively low. The used packaging bags can be recycled without causing environmental pollution, which is one of the fundamental reasons for eliminating plastic bags. In general, the production materials of paper bags need to meet the requirements of people's daily life, and have high safety and environmental protection.
