The German paper industry has focused heavily on the production of recycled paper. The shortage and the associated increase in the price of waste paper are therefore becoming more noticeable.
Trees have only had to believe in paper for 170 years. At that time, experts developed a manufacturing process from wood pulp and made it suitable for mass production. There was already paper in previous centuries. But people made this from scraps of fabric, tree bark or other fibers, such as fishing nets. The invention of this technique is attributed to Cai Lun, who, as an official at the court of the Chinese Emperor He of Han, is said to have created paper for the first time almost 2,000 years ago - with a pot and sieve and a pulp made from rags.
And basically paper production is still the same as it was back then: Even today, a cellulose-containing pulp is made, spread on a sieve, pressed and dried. The porridge consists either
