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Cornstalk raw material for papermaking

A technology for corn stalks and raw materials, which is applied in papermaking, fiber raw materials, textiles and papermaking, etc., can solve the problems of limited application scope, yellowing, and tearing index decline.

Active Publication Date: 2013-04-10
SHANDONG TRALIN PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the above-mentioned technology is only limited to extruding corn stalks for forage grass, which greatly limits its application range
And because the pulp is not removed when the above-mentioned kneading technology is used, the corn stalk with a silky structure obtained after processing contains all the pulp of the corn stalk, and because the pulp contains a certain amount of xylan hemicellulose, this type of semicellulose Under the action of light and oxygen, cellulose is easily oxidized to form carbonyl chromophore and carboxyl auxochrome, which will cause serious yellowing phenomenon when used in papermaking; The tear index of the paper is reduced to a certain extent

Method used

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  • Cornstalk raw material for papermaking
  • Cornstalk raw material for papermaking
  • Cornstalk raw material for papermaking

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The moisture content of a corn stalk raw material for papermaking is 15%; the corn stalk raw material for papermaking at least includes separated skin, pulp and leaves, wherein the content of the skin is 35wt%, and the content of the leaves is 55wt% %, the content of pulp is 3wt%, and the balance is other components; the crystallinity of the corn stalk raw material for papermaking is 32%; relative to the absolute dry raw material, the water-soluble sugar in the corn stalk raw material for papermaking The mass percentage of cellulose is 8%, the mass percentage of cellulose is 65%, and the mass percentage of lignin is 18%.

[0049] The above-mentioned corn stalk raw material for papermaking is obtained by the following process route:

[0050] The corn stalks harvested in the mature period of corn are passed through the agricultural harvester (such as figure 1 with figure 2 Shown) harvested, separated from the skin, pulp and leaves, and then dried in the field until the...

Embodiment 2

[0064] The moisture content of a corn stalk raw material for papermaking is 45%; the described corn stalk raw material for papermaking at least includes separated skin, pulp and leaves, wherein the content of the skin is 25wt%, and the content of the leaves is 60wt% %, the content of pulp is 7wt%, and the balance is other components; the crystallinity of the corn stalk raw material for papermaking is 36%; relative to the absolute dry raw material, the water-soluble sugar in the corn stalk raw material for papermaking The mass percentage of cellulose is 12%, the mass percentage of cellulose is 70%, and the mass percentage of lignin is 18%.

[0065] The above-mentioned corn stalk raw material for papermaking is obtained by the following process route:

[0066] The corn stalks harvested in the mature period of corn are passed through the agricultural harvester (such as figure 1 with figure 2 Shown) harvested, separated from the skin, pulp and leaves, and then air-dried in the ...

Embodiment 3

[0073] The moisture content of a corn stalk raw material for papermaking is 30%; the described corn stalk raw material for papermaking at least includes separated skin, pulp and leaves, wherein the content of the skin is 30wt%, and the content of the leaves is 58wt% %, the content of pulp is 5wt%, and the balance is other components; the crystallinity of the corn stalk raw material for papermaking is 35%; relative to the dry raw material, the water-soluble sugar in the corn stalk raw material for papermaking The mass percentage of cellulose is 10%, the mass percentage of cellulose is 68%, and the mass percentage of lignin is 15%.

[0074] The above-mentioned corn stalk raw material for papermaking is obtained by the following process route:

[0075] The corn stalks harvested in the mature period of corn are passed through the agricultural harvester (such as figure 1 with figure 2 Shown) harvested, separated from the bark and leaves, and then air-dried in the field until the m...

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Abstract

The invention relates to a cornstalk raw material for papermaking. The cornstalk raw material for papermaking is selected from cornstalks harvested in the mature period of corns and has the water content of being 15-45 percent; the cornstalk raw material for papermaking at least comprises the following components in percentage by weight: 25-35 percent of peels, 55-60 percent of leaves and 3-7 percent of flesh which are separated, and the balance of other components; the crystallinity degree of the cornstalk raw material for papermaking is 32-36 percent; and relative to an absolute dry raw material, the cornstalk raw material for papermaking contains 8-12 percent by mass of water-soluble sugars. The cornstalk raw material for papermaking, provided by the invention, has the advantages of well solving the storage and transportation problems, improving the using performance, broadening the application field, improving the utilization value, being capable of being purchased in a large batch and achieving large-scale industrial utilization.

Description

technical field [0001] The invention relates to a corn stalk raw material for papermaking, in particular to a treated corn stalk raw material for papermaking. Background technique [0002] Corn is a crop that is mainly used as feed for grain, economics and fodder, and corn stalks are also an important production resource for industrial and agricultural production. As a resource, corn stover is rich in nutrients and available chemical components, and can be used as raw material for livestock feed. For a long time, corn stover has been one of the main roughage raw materials for livestock. [0003] As one of the three major food crops, corn has an annual output of about 250 million tons of by-product corn stalks, accounting for as much as 30% of the total crop stalks, ranking second only to the United States in the world. [0004] The yield of corn stalks is so abundant, but it has not been rationally and effectively utilized all the time. In the past, people used a small am...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21B1/00
Inventor 李洪法华新生毕衍金宋明信黄洪星
Owner SHANDONG TRALIN PAPER