Why labels made of grass? This question is frequently asked. There are several reasons for resorting to renewable raw materials in the production of paper. A very important reason is the environmentally friendly processing of the natural fibers, which requires no chemical additives and significantly less water. The production process conserves valuable resources; our environment is considerably less polluted. Most importantly, up to 75 percent of CO2 emissions are saved during production. How is that possible?
Preparation of the cell fibers is purely mechanical
To understand why the production process of grass paper is so environmentally friendly, one must first understand how resource-intensive conventional paper is produced using wood fibers. For the wood to be processed into raw fibers at all, the so-called lignin must be removed. Lignin is a biopolymer, – a kind of adhesive that gives the wood its strength so that a tree can grow upwards. Depending on the tree species, between 55 and 60 percent of the wood consists of such substances. In order to produce the soft pulp from hardwood, a large amount of chemicals, water, and energy is needed.
Reduced energy consumption and CO2 emissions
The raw material grass, on the other hand, grows flat and contains hardly any lignin. Therefore, it is using significantly less water and energy: The grass is dried to hay and cleaned by air, and then to small fibers and ground. The processed material is then pressed into pellets for better transport and storage. The complete process reduces the use of water from an average of 6000 liters to two liters per ton of pulp. Chemical substances are not necessary at all for the mechanical processing of the grass. At the same time, energy consumption is reduced from around 6000-kilowatt hours per ton to less than 150-kilowatt per ton. In total, up to 75 percent less CO2 is emitted during the production of the grass fiber pulp compared to wood pulp.