Have you ever cared about printing ink on food bags? Do you often use plastic bags for hot cooked food? In fact, we should know that the packaging of food is as important as the quality of food. Packaging is the "coat" of food, once it goes wrong, food safety will be threatened.
Since 2006, McDonald's China has gradually introduced a kraft paper bag with thermal insulation properties to hold takeaway food in all its outlets, replacing plastic food bags. Other big consumers of plastic bags, such as Nike and Adidas, are adopting high-quality kraft paper bags instead of plastic shopping bags. As anti-plastic campaigns spread around the world, environmentalists are turning their attention to the ancient kraft paper bag.
Kraft paper bags are non-toxic, tasteless, pollution-free, in line with national environmental standards, high strength, high environmental protection, is currently one of the most popular environmental protection packaging materials in the world. Making kraft paper bags with kraft paper has been more and more widely used in supermarkets, shopping malls, shoe stores, clothing stores and other shopping places, generally there will be kraft paper supplies, convenient for customers to carry the purchase of items. Kraft paper bag is a kind of environmental protection packaging bag, its variety.

Kraft paper bag is made of wood pulp paper as the base material, and the color is divided into white kraft paper and yellow kraft paper. It can be coated with a film of PP material on the paper, which plays a waterproof role. The strength of the bag can be made of one to six layers according to customer's requirements, which integrates printing and bag making. The opening and bottom sealing methods are divided into heat sealing, paper sealing and lake sealing. As we all know, paper is a recyclable resource. Papermaking raw materials are mainly plant fiber, raw materials contain cellulose, hemicellulose, lignin in addition to the three main components, there are other less content of components, such as resin, ash, etc. There are also auxiliary ingredients such as sodium sulfate. Paper in addition to plant fiber, but also need to add different filler according to different paper materials. The plastic bags commonly used are made from polyethylene using oil, which is already our scarce energy source. Paper bags, by contrast, are made from trees, a renewable resource. It is naturally labeled green for its characteristics of being degradable and recyclable.