What is pulp?
Use the search bar to find what you're looking for!
What Does pulp Mean
Pulp is a concept that refers to some internal tissue of fruits , plants and meat. The most common use of the term is linked to the fruit , referring to the fibrous area that helps to disperse the seeds.
The pulp includes numerous nutrients that are necessary for the health of animals, including humans . In general, the seeds, which are not edible, are covered by the pulp: in this way, when an animal eats a fruit attracted by the pulp, it ends up later expelling the seeds in different places. This allows the plant of the fruit in question to grow in different places.
The people tend to use different utensils or appliances for the fruit pulp. It is necessary to remove the peel and seeds to access the pulp, which can then be squeezed to obtain juice ( juice ).
The notion of pulp can also refer to certain specific products. In the canning sector , the pulp is the fruit that, without its seeds and pits (pits), has been crushed and packed.
When sugar is produced from beets , on the other hand, the pulp is the residue that remains after the processing of the roots. This pulp is used to feed certain animals.
Finally, it is known as cellulose pulp , the material that is obtained from different kinds of wood to produce paper . It is a paste that is generated from various industrial processes that are applied to certain types of wood known as pulp , a group that includes fir, pine, larch and spruce, although it is also They use hard woods, such as birch and eucalyptus.
The first step in the process to obtain cellulose pulp is to remove the bark from the wood, something that can be done with or without the use of water . This bark is usually used to feed industrial boilers, so that its extraction does not represent a waste of raw material. Next, it is necessary to crush the wood with the help of specialized machines for subsequent wetting.
The mechanical shredding process results in a cellulose pulp, which is used to produce poorly resistant paper, such as that found in newspaper newspapers. If steam is used to accompany this step, then thermomechanical pulp can be obtained and if this is combined with the use of certain chemicals, the result is chemothermomechanical pulp.
It is known as lignin to a polymer having the mission to increase the thickness of the stem and is in cell walls of Dinophytas (belonging to the kingdom Chromalveolata) and plants . Its name refers to the term "wood" and for this reason plants that contain it in large quantities are called woody . Given its use in the creation of mechanical pulp, the paper that comes from it turns yellowish after a while.
To obtain chemical pulp, certain chemical products must be mixed with previously crushed wood in a container known as a digester , which has a large size. With the help of heat, it is possible to dissolve the lignin and prevent the cellulose fibers from separating or the wood fibers from breaking. The result is a paste with lignin and, on the other hand, the surplus of chemicals, which is usually used to feed the boilers.
The process or pulping Kraft is the most used to obtain cellulose pulp and in its name is the term "kraft", which comes from Swedish and German, and can be translated as "force".