Copyright 9. Elasticity: Timbers generally attain its own shape after usage. An avid reader and a nature lover by heart, when he is not working, he is probably exploring the secrets of life. The pulp so produced is usually put to use in making heavy-duty cardboard. This list is by no means exhaustive, but one can see that timber plays an important role in modern society. There are three processes by which wood is converted into pulp and the method used depends on the type of wood and the type of paper to be produced: About one-fifth of the world production of woodpulp is produced by the mechanical process, in which the wood is ground up by revolving grindstones and then soaked in water to produce a fibrous mass. Tropical and temperate hardwoods are used for boats. Synthetic Textiles 5. This is partly because a rather higher standard of living than in many developing countries enables many people to use kerosene, gas or electricity rather than wood as the major domestic fuel, but also reflects the use of wood from rubber plantations rather than from the forests, as an industrial and a domestic fuel. However, the proportion of timber used as a fuel around the world differs with the usage of other alternatives available such as coal. Wood does still yield materials for the disinfectant and paint-making industries. (And Process of Formation), How Were the Himalayas Formed? Those countries in which forest industries are most highly developed generally use least timber for fuel, while in those areas where forestry is little- developed, fuel is the major use, consuming almost the entire output. Despite having enough use of steel and concrete in the construction industry, there is considerable use of timber for building bridges and parts of houses.
Wood contains two substances, lignin and cellulose, and the object of pulping is to extract the cellulose from which paper (and synthetic textiles) are made. Timber is the most important element used for making furniture. Trees also yield tannin, gums, resins and drugs. (Any Why They Do Not Get Sick), Can Squirrels Eat Peanuts? The art of paper-making first originated in China. After fuel the most important use for timber is in the building and constructional industries.
Different chemicals are used for different purposes. Particle board mills are small and cheaper to set up than fibreboard mills but the cost of resins for bonding the particles is often greater than that of the wood. There is a variation of color from one tree to the other. Timber is most commonly associated with building and construction materials, but as you will see from the list bellow, timber plays an important role in many aspects of todays world. They are made from sawdust, pulp, and other waste materials. pine. Sawnwood, mostly from coniferous trees, is also used in the form of planks, boards, beams and so forth in house building. With the growing population, the number of construction work in the world is increasing daily; hence the utilization of timber has also seen exponential growth. The cellulose is dissolved in caustic soda and carbon bisulphide and the resultant solution is extruded through a spinneret with numerous holes into a coagulant to make filaments of viscose rayon. Another process, using acetic acid, acetic anhydride and acetone produces a solution which is extruded into a current of warm air rather than a coagulant.
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