Can any kind of tree make paper?

Generally speaking, any tree can be used to make paper, but it is suitable for the question of whether it is economical or uneconomical. Wood used in papermaking can be divided into two types: coniferous wood and hardwood wood, which has long fibers and high fiber content.

It is suitable for papermaking, (such as masson pine, larch, Korean pine, spruce, etc.) but the growth rate is slow and there are more pigment resins. Hardwood fibers are short and have low fiber yields (e.g., birch.

Poplar, basswood, eucalyptus, maple, acacia.

etc.), but the growth rate is fast. There are few coniferous wood resources in China, and the fast-growing forests for papermaking are mainly broad-leaved trees, mainly according to trees in the south, and poplars in the north.

The physicochemical structure of different tree species is very different, and the production process is very different from the same target product, and the key to determining what kind of tree can make paper is the production cost (including raw material **, raw material scale, and production process consumption). Theoretically, as long as there is fiber, as long as there is cellulose in theory, paper can be made.

The criteria for choosing paper-making trees are mainly based on short growth cycles, easy planting, high added value, high fiber content, and not hard tree texture. The more common paper-making tree now is eucalyptus. The western Sichuan region is suitable for the large-scale cultivation of this tree species.

Eucalyptus trees grow quickly, prefer warm climates, but are not tolerant to humidity and heat, have poor growth in overheated climates, and prefer fertile and moist acidic soils. In a good environment, 1-year-old seedlings can reach a height of 1 meter, 3-year-old seedlings up to 9 meters, 10-year-old seedlings are about 20 meters high, 20-year-old seedlings are about 30 meters high, and then the growth is gradually slow, 6-year-old can flower and bear fruit, and enter the full fruiting period after 15 years. Generally, the rotation period can be entered in 3 to 5 years, depending on the local climatic conditions.

The raw materials of modern papermaking include plant fibers (wood, bamboo, grass, etc.), mineral fibers (asbestos, glass filament, etc.), other fibers (nylon, metal wire, etc.), and polymer materials obtained by petroleum cracking. At present, paper used for writing, printing and packaging is still mainly made of plant fiber. It can be divided into two categories:

Wood fiber raw materials, plant fibers obtained directly from trees. Non-wood fiber raw materials, which are also divided into grass fiber raw materials, bast fiber materials and seed hair fiber materials. As long as it is a tree, as long as it contains fiber, it can be used to make paper.

Wood used in papermaking can be diversified, but it is mainly based on fiber base materials as raw materials, and wood can be divided into two categories: coniferous wood and broadwood wood. Fir and various types of pine, spruce and fir are coniferous timbers; Oak, ash, camphor, sassafras and various birch, nanmu and poplar are broad-leaved trees. There are many tree species in China, so the timber species commonly used for engineering in various regions are also different.

Nowadays, science and technology are more and more developed, the wood material of papermaking is one of the most materials, the wood is processed into wood chips by wood chip machine, and then processed into pulp on the wood chips, and then chemical reaction, after a series of modulation steps can be processed into commonly used paper.

Straw is a general term for the stem, leaf (spike) part of a mature crop. It usually refers to wheat, rice, corn, potatoes, oilseeds, cotton, sugarcane and other crops that are left after harvesting seeds. For example, corn stalks, bamboo, wheat straw, reeds, and reeds can be used to make paper, and these materials can be used to process pulp, but the use of different papers in the processing is different, according to the current level of science and technology, these materials must be processed by the straw crusher.

At present, the tree species that have been popularized are the papermaking tree species introduced from Japan, the fast-growing broad-leaved timber species of the Cinnamomum glabra, the deciduous tree, belonging to the Moraceae family, and the genus Saccharides. Usually the stem is short and thick, the skin is dark gray, smooth, and can be propagated by sowing, rooting, cuttings and striping. It is a special tree species for pulp and paper making that has been introduced from Japan in recent years.

This tree species can be used for greening and soil and water conservation, and has high economic value. Through the cooperation of relevant scientific research and production departments, the scientific research and pilot production of pulping using bast and wooden pole have been completed in China.

Theoretically, yes, but it is necessary to take into account that it is the industrial age, and the right species is needed, it is necessary to take into account its growth cycle, the optimal age of the tree, whether there is suitable machinery to facilitate processing, etc. Eucalyptus is good.

Now is the best way to construct a tree. Because at present, rice paper is made of tree structure. Of course, other trees can also be used to make ordinary paper, and many of them can be used.

Hello dear. No. Generally, you don't use branches to make paper, but you also consider the thickness of the branches and the tree species to which the branches belong, because not every tree species is used to make paper.

Because the bark of the branches contains almost no fiber, the bark cannot be used to make paper; If the branches are thick, it is also used for papermaking, such as poplar, maple, eucalyptus, birch and other broad-leaved trees or coniferous trees such as masson pine and larch, which can be considered for desensitization papermaking. There is also the center of the tree inside the branch, that is, the cross-section, and the blackened thing in it is generally not used to make paper. 1.

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The fastest growing tree in the world, which was used by our country to make paper, is now regretting that it was not at the beginning.

Generally speaking, eucalyptus is commonly used in the paper industry.

Papermaking can be done with needle wood, horsetail, or reeds.

The fastest growing tree in the world, introduced in China to "make paper", but now it is regretted!

The raw materials for papermaking are also diversified, and there are many types of paper. Such as bamboo curtain paper, the paper surface has obvious lines, and the paper is tight and thin. There is rattan paper made of rattan bark as raw material, the paper is uniform and smooth, white as jade, and does not leave ink.

Dongyang has fish roe paper, also known as fish paper, which is soft and smooth. Jiangnan uses straw and wheat straw fibers to make paper, which is yellow in color and has a rough texture that is difficult to write. In the north, the mulberry stem bark fiber is used to make paper, the texture is excellent, the color is white, the light and soft are soft, the tensile force is strong, and the paper grain is torn off like cotton silk, so it is called cotton paper.

Cai Lun papermaking raw materials are extensive, the paper made of rotten fishing nets is called net paper, and the paper made of rags is called cloth paper.

Although the modern paper industry has been well developed, its basic principles are still the same as Cai Lun's papermaking methods. Seven-eight-tenths of the raw materials for papermaking have been replaced by wood pulp, but the raw materials used to make high-grade printing paper, cigarette paper, rice paper and typed wax paper are still not the rags, bark, hemp heads, waste fish nets and other raw materials used by Cai Lun.

As long as it is a raw material that contains fiber, it is fine.

The fastest growing tree in the world was used by our country to build a rental nuclear paper field type pin, and now it is regretted that it should not be used at the beginning of the tour.

Thank you for your non-professional experience, just based on your personal understanding. The process of making paper (simplified): the wood is turned into pulp, the slag (fiber) is copied out and then dried.

However, to prepare such a fiber, the research and development cost must not be low, and the synthesis cost is even more unlikely to be compared with natural growth. (There are experts related to agriculture and plants to introduce the growth rate of various woods?) )

There are many varieties of plant fiber raw materials used in China, which are divided into six categories:

First, conifer wood, such as larch, Korean pine, masson pine, Yunnan pine, sylvestris pine, etc.;

the second is broad-leaved wood, such as poplar, birch, eucalyptus, etc.;

The third is grass plants: such as reeds, bamboo, miscanthus stalks, wheat grass, straw, dragon's beard grass, sorghum stalks, bagasse, etc.;

fourth, bast fibers, such as flax, jute, kenaf, sandalwood bark, mulberry bark, cotton straw bark, etc.;

fifth, wool fibers, such as cotton, cotton linters, cotton rags;

Sixth, waste paper fibers, according to the habits of our country, are classified as first-class waste paper (white paper edges and broken paper that have not been printed from factories or relevant units), second-class waste paper (printed waste books, newspapers), third-class waste paper (all waste paper, old cardboard, broken cartons except the above two) and so on.

Straws, reeds, etc. can be used to make paper.