阅读说明：本技术 一种机制棉浆书画纸及其制造方法 (Machine-made cotton pulp painting and calligraphy paper and manufacturing method thereof ) 是由 杨扬 刘�文 刘群华 于 2020-03-24 设计创作，主要内容包括：本发明公开了一种机制棉浆书画纸及其制造方法,其特征是：以棉浆为主要原料,辅以苇浆和天丝纤维浆料,将棉浆、苇浆和天丝3种原料分别进行疏解并打浆；将打浆后的3种浆料混合均匀,混合浆料中加入分散剂和湿强剂,搅拌均匀；浆料上网成形,经压榨、烘缸干燥得到书画纸。采用本发明的制备方法能够制备出绵柔、润墨、墨色鲜明的书画纸。(The invention discloses a machine-made cotton pulp painting and calligraphy paper and a manufacturing method thereof, which are characterized in that: taking cotton pulp as a main raw material, and assisting with reed pulp and tencel fiber pulp, respectively defibering and pulping the 3 raw materials of the cotton pulp, the reed pulp and the tencel; uniformly mixing the 3 pulped pulps, adding a dispersing agent and a wet strength agent into the mixed pulp, and uniformly stirring; the pulp is formed on a net, and the painting and calligraphy paper is obtained by squeezing and drying in a drying cylinder. The preparation method can prepare soft, ink-moistening and bright-color painting and calligraphy paper.)

1. A machine-made cotton pulp painting and calligraphy paper and a manufacturing method thereof are characterized by comprising the following steps:

(1) the raw materials for papermaking are cotton pulp, reed pulp and tencel fiber (L yocell), and 3 raw materials are respectively defibered and pulped;

(2) uniformly mixing the 3 pulped pulp obtained in the step (1), wherein the mass fraction of the cotton pulp in the mixed pulp is 50-80%, the mass fraction of the reed pulp is 15-35%, and the mass fraction of the tencel fiber pulp is 5-20%;

(3) adding a dispersing agent and a wet strength agent into the mixed slurry obtained in the step (2) under the condition of stirring, and uniformly stirring;

(4) and (4) dewatering and forming the mixed pulp obtained in the step (3) on a net, squeezing and drying in a drying cylinder to obtain the painting and calligraphy paper.

2. The machine-made cotton pulp painting and calligraphy paper and the manufacturing method thereof as claimed in claim 1, characterized in that the beating degree of the cotton pulp after the completion of beating of the 3 raw materials in the step (1) is 25-45 ° SR, the beating degree of the reed pulp is 18-35 ° SR, and the beating degree of the tencel fiber pulp is 40-70 ° SR.

3. The machine-made cotton pulp painting and calligraphy paper and the manufacturing method thereof as claimed in claim 1, characterized in that the dispersant in step (3) is one or more of anionic polyacrylamide, polyethylene oxide and sodium carboxymethyl cellulose, and the dosage is 0.02-1.0% of the oven-dried fiber mass.

4. The machine-made cotton pulp painting and calligraphy paper and the manufacturing method thereof according to claim 1, characterized in that the wet strength agent in the step (3) is polyamide epichlorohydrin resin (PAE) which is used in 0.1-0.6% of oven-dried fiber mass.

Technical Field

The invention belongs to the field of special paper production, and particularly relates to machine-made cotton pulp painting and calligraphy paper and a manufacturing method thereof.

Background

The writing and painting paper is paper special for writing and painting with a writing brush, and broadly comprises rice paper, Yuan writing paper, rough selvedge paper and the like, and because the rice paper is famous for a long time and is listed as a national geographic marking product, another writing and painting paper in a narrow sense is defined as other paper for calligraphy and painting besides the rice paper.

The writing and painting paper with excellent performance has the performances of small deformation, smooth writing, soft paper, high strength, proper ink absorption, bright ink color and the like. The existing painting and calligraphy paper in the market comprises handmade paper and machine-made paper, and the handmade paper has the disadvantages of complex manufacturing process, long flow, high labor intensity, low efficiency and high cost; the enterprise scale is small, workshop type production is mainly used, and individual operation is mostly adopted, so that the development order of the hand-made paper industry is disordered, and the product quality is uneven; environmental pollution is generated in the production process, most workshops have incomplete environmental protection facilities, and the environmental pollution becomes one of the main resistance of hand-made paper development along with the stricter policy of China on environmental protection; the raw materials of the hand-made paper are short, and the traditional hand-made paper mainly adopts non-wood fiber raw materials such as mulberry bark, hemp and the like, and faces the crisis of raw material shortage. With the development of modern industry, the production of the painting and calligraphy paper can realize mechanization, and the mechanical paper has the advantages of high efficiency, large-scale production, accurate control, low cost and the like. Aiming at the market demand of the traditional manual painting and calligraphy paper, the market demand is mostly concentrated in the high-end paper field or the ancient painting and calligraphy repairing industry, the price is expensive, the machine-made painting and calligraphy paper mainly supplies the middle-end and low-end painting and calligraphy paper field with larger demand, but the performance of part of machine-made painting and calligraphy paper cannot be recognized in the industry, for example, the strength is poor, and the display and later-stage mounting of painting skills are not facilitated; the paper is crisp and hard, and particularly, the paper is crisp after the writing ink is dried, so that the texture is influenced; the deformation is large, and the appearance is influenced due to serious wrinkles of the paper after writing and drawing; poor ink wetting property, too much ink absorption or ink repellency, gray ink color, easy generation of pen stagnation and the like.

In order to inherit and carry forward excellent culture of Chinese nationality and enhance national confidence, relevant documents are exported by the education department to strengthen calligraphy education of primary and secondary schools and promote the work of 'calligraphy going into classroom', and the calligraphy education is vigorously developed in the primary and secondary schools in various places; with the social development and the accelerated aging of population, the life demand of the old changes from 'material aging type' to 'mental aging type', the cultural aging of the universities and the elderly universities prevails, and the relevant courses of calligraphy and traditional Chinese painting are widely favored. The traditional calligraphy and traditional painting is valued by the nation, so that the development of the painting and calligraphy paper market is promoted, the demand of the painting and calligraphy paper is increased, and the market scale is continuously expanded, so that a proper mechanical painting and calligraphy paper production method is urgently needed, the painting and calligraphy paper which can meet the demands of painting and calligraphy people, is smooth to write, is ink-moist, is soft and has excellent performance is prepared.

Disclosure of Invention

Aiming at the problems of the prior machine-made writing and painting paper, the invention aims to provide the machine-made writing and painting paper taking cotton pulp as a main raw material and a manufacturing method thereof.

The technical scheme for realizing the invention is as follows: a machine-made cotton pulp painting and calligraphy paper and a manufacturing method thereof comprise the following steps:

(1) the raw materials for papermaking are cotton pulp, reed pulp and tencel fiber (L yocell), and 3 raw materials are respectively defibered and pulped;

(2) uniformly mixing the 3 pulped pulp obtained in the step (1), wherein the mass fraction of the cotton pulp in the mixed pulp is 50-80%, the mass fraction of the reed pulp is 15-35%, and the mass fraction of the tencel fiber pulp is 5-20%;

(3) adding a dispersing agent and a wet strength agent into the mixed slurry obtained in the step (2) under the condition of stirring, and uniformly stirring;

(4) and (4) dewatering and forming the mixed slurry obtained in the step (3) on a net, squeezing and drying in a drying cylinder to obtain the painting and calligraphy paper.

After the 3 kinds of pulp are pulped, the pulping degree of cotton pulp is 25-45 degrees SR, the pulping degree of reed pulp is 18-35 degrees SR, and the pulping degree of tencel fiber pulp is 40-70 degrees SR.

The dispersant in the step (3) is one or more of anionic polyacrylamide, polyethylene oxide and sodium carboxymethyl cellulose, and the dosage of the dispersant is 0.02 to 1.0 percent of the mass of the absolutely dry fiber; the wet strength agent is polyamide epichlorohydrin resin (PAE), and the using amount is 0.1-0.6% of the absolute dry fiber mass.

The technical indexes of the invention are as follows: quantitative determination of 22-35 g/m²And a tightness of 0.32 to 0.42g/cm³The breaking length is 1.8-3.5 km, the water absorption height is 23-31 mm, the wet strength is 700-1500 mN, and the shrinkage rate is 0.3% -0.8%. The performance index of the prepared writing and drawing paper meets GB/T22828-The rice paper standard requires technical indexes of painting and calligraphy paper and rice paper.

The invention has the following advantages:

the writing and painting paper prepared by the invention is prepared by adopting 3 sizing agents, has complementary advantages and innovatively uses tencel fibers for manufacturing the writing and painting paper. The cotton fiber is long and wide, the fiber form is relatively bent, the finished paper is soft in hand feeling, good in ink absorption, high in cotton pulp cellulose content, good in dimensional stability and durable, but the strength of the finished paper made of the cotton fiber is relatively poor; the reed pulp fiber is thin, the length-width ratio is large, the finished paper is compact and fine, and the reed pulp fiber and the cotton pulp fiber form a basic framework of the painting and calligraphy paper, so that the strength performance of the paper is improved; after the tencel fibers are pulped and cut off, the tencel fibers become fine and can be filled in gaps of a paper framework, on one hand, the evenness and the strength of the writing and painting paper can be improved, on the other hand, the ink moistening performance can be improved, the writing and painting paper added with the tencel fibers is smooth in writing and bright in ink color, and the phenomenon that the ink color turns grey cannot occur.

The dispersant is added into the pulp, so that longer cotton fibers can be dispersed, and the paper evenness is better; the wet strength agent can improve the wet strength of the painting and calligraphy paper, and is beneficial to the exhibition of painting and calligraphy skills and the later mounting.

The writing and painting paper prepared by the invention is white, soft, good in ink moistening effect, smooth in writing, bright in ink color, simple in production process and suitable for mass production.

Detailed Description

The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.