What is paper pulp?

PAPER PULP is a term used to describe various porridge products used to produce paper and paper products. Pulpy is made either of wood or cotton fibers and are made by "cooking" chips or cotton fibers in water and various chemicals to reduce the consistency suitable for rolling various end products. Hard and soft wood harvested from sustainable sources are used to make paper pulp on the basis of wood. In the case of cotton -based pulp, raw cotton lines or recycled rag rag are used to produce better papers. After production, the pulp can be used immediately, stored in VATS or dried and wrapped for later use. In both sources of raw materials, paper pulp is generally produced by "cooking" chips or cotton fibers at high temperatures and pressure in the digestor to reduce or disintegrate Mateřil to create viscous suspension. The raw material is boiled in a solution of water and chemicals such as sodium hydroxide, sulfide sodium and calcium carbonateý, known as white liqueur. Once the cooking process is completed, the pulp usually undergoes several stages of washing and whitening before it is dried and processed.

PAPER -based paper pulp processes begin with the collection of suitable wood supplies from the saw sources, forestry harvest or thinning operations. These supplies include hard and soft wood varieties, including pine, spruce and birch. The wood is then cleaned of bark and debris and chipped to form a fine aggregate. The chips are introduced into a heated pressure vessel known as digent along with water solution, sodium hydroxide and sodium sulfide, where it is cooked under pressure of approximately 90 minutes. This process is distributed by ligninnebo -binding cells in the wood reduces the chips to a strong pulp.

cotton paper pulp is made from one of two sources of raw materials - raw cotton lines and cotton rags. Cotton linters are long, fine fibers that the surroundingThe seed is burned to the cotton boll while the rags are simple clothing and the production of fabrics. These cotton fibers are rich in cellulose and have no lignin, resulting in a whiter and stronger end product that requires less whitening. Cotton pulp is made from a similar process to a wooden pulp, while the fibers are cooked under pressure in water and chemicals such as calcium carbonate and hydrogen peroxide. Due to their strength and longevity, cotton -based papers are commonly used as archive support for works of art and monetary production.

In the processes of wood and cotton paper pulp, the pulp is subjected to several washing phases after the initial cooking is complete. In addition to washing, the pulp of the pulp is usually bleached to neutralize any remaining lignin color in the pulp. The finished pulp is then used either immediately or can be stored in VATS or dried, cut and wrapped for distribution to paper manufacturers.