KR101178100B1 - Manufacturing method of the paiting and writing paper shere the foot jelly characteristic is excellent - Google Patents

Abstract

The present invention relates to a method for producing a Seohwa paper having excellent physical properties such as strength, low manufacturing cost, and particularly excellent ink resistance, wherein 5 to 15% by weight of cedar bark fiber and 85 to 95% by weight of conifer pulp are mixed. A mixed pulp is produced by papermaking and drying.

Description

MANUFACTURING METHOD OF THE PAITING AND WRITING PAPER SHERE THE FOOT JELLY CHARACTERISTIC IS EXCELLENT}

The present invention relates to a method for producing a calligraphic paper having excellent physical properties such as strength, low manufacturing cost, and particularly excellent ink resistance.

In general, the best use of Hanji is to write or draw.

However, it is true that Hanji as a paper to write or draw has given much demand. In the meantime, more efforts have been made to promote and sell household goods that apply Hanji, such as Hanji crafts, Hanji fashion, and Hanji wall paper, rather than promoting Korean paper as a paper used for drawing or drawing.

As a result, it was not able to generate domestic demand as well as overseas exports in areas such as Seohwa Paper and Ancient Document Preservation Paper, which are the bulk demand destinations of Hanji.

It is also true that Hanji as a western paper has lost its place in China's cheap Chinese land.

The superiority of Hanji as a piece of paper and calligraphy paper has not disappeared. Hanji is still the finest calligraphy paper and a favorite piece of paper for anyone who truly understands calligraphy.

However, after decades of push on cheaper paper, the paper was not produced at all.

In recent years, however, some of the calligraphy scenes in Korea and China have become seriously affected, and the problems of calligraphy used to adapt to the papers have also begun to be pointed out.

The biggest problem with drawing paper is that it does not have a long life, and in severe cases, it can not stand for 20 to 30 years, and the paper fades and crumbles.

Twenty to thirty years after the calligraphy papers of China and Korea have been changed to the color of Chinese paper, there is a phenomenon in which the works produced in the past are spoiled in nature. Looking at this phenomenon, Korean and Chinese calligraphy circles began to look for long-lived, high-quality paper.

In particular, as the economy develops, the calligraphy boom has risen and the calligraphy works market is much more active than in the past.

Paper used in calligraphy is best made of natural paper made of natural paper mulberry without any chemical additives.

The paper used in calligraphy should not be too slippery or too rough. If you are too slippery, you won't get a rough taste, and if you are too rough you won't be able to express a soft rhythm.

And calligraphy has a special effect by using the proper bleeding of the ink, in order to achieve the effect of this bleeding should be a paper that absorbs the ink well.

The proper use of the characteristics of 'smear' is silence. The effect of smearing differs depending on the joke of the ink, so the proper effect of the joke can maximize the effect of the ink.

In Korea, Doc pulp, which is a bask fiber, is used as a raw material for Korean paper, but recently, wood pulp such as paper is mixed with Doc pulp to manufacture drawing paper. In particular, in the case of drawing paper, wood pulp is mainly used as a short fiber in order to uniformly spread the ink and control the inkability.

However, domestic rice paper is sold at a low price because it is inferior in quality to high-quality rice paper imported from China and Taiwan. In addition, in the case of mulberry fiber, the quality domestic mulberry growers are decreasing, and the import of bad mulberry overseas is increasing significantly.

The reason for this is that it requires a lot of labor until cultivation and selection of mulberry, and in recent years, the price of raw materials also increases due to the increase in labor costs, and each factory avoids these domestic mulberry trees, which is cheaper than domestic but cheap Thai and Chinese, etc. Importing a lot of bast fiber.

Accordingly, the present inventors propose a method for producing a calligraphic paper having excellent physical properties such as strength, low manufacturing cost, and particularly excellent ink resistance.

An object of the present invention for solving such problems is to provide a method for producing a calligraphic paper having excellent physical properties such as strength, low manufacturing cost, and particularly excellent ink resistance.

In order to achieve the above object, the present invention provides an excellent calligraphy paper, which is produced by papermaking and drying a mixed pulp of 5-15 wt% of cedar bark fiber and 85-95 wt% of coniferous pulp. It provides a manufacturing method.

The mixed pulp is papered using a long mesh paper machine or a circular paper machine.

In particular, the mixed pulp is preferably made by mixing 15% by weight of cedar bark fiber and 85% by weight of conifer pulp.

Hereinafter, the manufacturing method of the calligraphy paper excellent in inkability will be described in detail.

In the method for preparing Seohwa paper having excellent ink stainability of the present invention, paper pulp mixed with 5 to 15% by weight of cedar bark fiber and 85 to 95% by weight of conifer pulp is prepared by papermaking and drying.

When the cedar bark fiber is mixed with less than 5% by weight, the physical properties such as strength is lowered, and when the cedar bark fiber is mixed with more than 15% by weight, the problem of deterioration of the physical properties such as uneven spreading of the ink have.

Further, in order to further improve the strength of MD and CD of the mixed pulp, the mixed pulp may be papered using a long mesh paper machine or a circular paper machine.

In addition, the mixed pulp is excellent in strength, high concentration of the ink, it is preferable that the mixture of 15% by weight of cedar bark fiber and 85% by weight of coniferous pulp in order to make the spread of the ink more excellent.

Here, the mixed pulp is subjected to a beating step, and the beating step is preferably stirred for 20 to 40 minutes at a speed of 500 to 600 rpm in a state in which 0.02 to 0.04% of a dispersant is added to the mixed pulp.

When the dispersant is added 0.02 to 0.04% with respect to the mixed pulp, it is possible to improve the dispersibility of the fiber.

When stirring at a speed of less than 500rpm, the cutting rate of the fiber is insignificant, and long fibers are present, so that the surface and the ink spreading are not good. There is a problem that the physical properties of the.

As described above, the mixed pulp is subjected to a beating step, and the beating step is improved by dispersing the fiber because it is stirred for 20 to 40 minutes at a speed of 500 to 600 rpm with a dispersant added at 0.02 to 0.04% to the mixed pulp. Not only can there be advantages such as better physical properties such as strength, cheaper manufacturing costs, and particularly excellent ink resistance.

As described above, the present invention is produced by papermaking and drying mixed pulp mixed with 5-15% by weight of cedar bark fiber and 85-95% by weight of coniferous pulp, and has excellent physical properties such as strength and low manufacturing cost. In particular, it has an advantage of excellent inkability.

The present invention is produced by papermaking and drying the mixed pulp mixed with 5-15% by weight of cedar bark fiber and 85-95% by weight of coniferous pulp. Excellent effect.

Further, since the mixed pulp is papered using a long mesh paper machine or a circular paper machine, there is an effect that the strength of MD and CD of the mixed pulp can be further improved.

In addition, since the mixed pulp is made by mixing 15% by weight of cedar bark fiber and 85% by weight of coniferous pulp, the strength is high, the concentration of the ink is high, the spread of the ink is more excellent effect.

Further, the mixed pulp is subjected to a beating process, the beating process is to improve the dispersibility of the fiber because it is stirred for 20 to 40 minutes at a speed of 500 ~ 600rpm in a state in which 0.02 ~ 0.04% dispersant is added to the mixed pulp. Not only that, but also excellent physical properties such as strength, manufacturing cost is cheaper, and in particular, there is an effect excellent in inkability.

Hereinafter, a method for producing a calligraphy paper excellent in ink-resistance of the present invention will be described in detail with reference to Examples. The scope of the present invention is not limited to the following Examples.

Example 1

5% by weight of cedar bark fiber with an average fiber length of 4.1 mm, and 95% by weight of conifer pulp with an average fiber length of 2.6 mm with a dispersant added at 0.01%, followed by stirring for 15 minutes at a speed of 400 rpm. After the process, the Seohwa paper was manufactured by the general papermaking method in Daehan Special Hanji Co., Ltd. of Jeonjujae, Jeonbuk, Korea.

[Example 2]

Unlike Example 1, after mixing the pulp mixed with 15% by weight of cedar bark fiber and 85% by weight of coniferous pulp, 0.02% of dispersant was added and stirred at a speed of 500 rpm for 20 minutes. Was used to prepare a calligraphy paper.

[Example 3]

Unlike Example 1, the Seohwa paper was manufactured by using a ring paper machine after a beating process after stirring for 40 minutes at a speed of 600 rpm in a state in which 0.04% of a dispersant was added to the mixed pulp.

Example 4

Unlike Example 2, the Seohwa paper was manufactured using a ring net paper machine after a beating process, which was stirred at a speed of 700 rpm for 50 minutes in a state in which 0.05% of a dispersant was added to the mixed pulp.

[Comparative Examples 1-4]

As Comparative Examples 1 and 2, two kinds of imported calligraphy papers of Taiwan and China, which are commercial products, and two types of domestic recording papers and mechanical calligraphy papers, which are commercial products, were used as Comparative Examples 2 and 3.

Tensile strength, optical properties, ink stain test, and absorbency were tested for the calligraphic papers of Examples 1 to 4 and Comparative Examples 1 to 4, respectively.

[Experimental Example 1]

After humidifying the Seohwa paper of Examples 1-4 and Comparative Examples 1-4 in a constant temperature and humidity room (temperature: 20 ± 1 ° C., RH: 65 ± 5%) for 24 hours or more, the wet paper was subjected to TAPPI Test Methods. Tensile strength was measured while considering the direction of MD / CD, and the results are shown in Table 1.

Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4

The tensile strength
(mN? m ² / g)

MD

24.9
24.2
23.2
21.9
23.3
23.4
21.6
15.1
CD

22.1
22.3
22.8
21.2
22.5
21.3
21.6
13.9

Thus, the tensile strength taking into account the direction of MD / CD of calligraphy paper of Example 1-4 was determined to be greater than each of 21.2mN and m ² / g or more and 24.9mN m ² / g.

Then, the tensile strength taking into account the direction of MD / CD of calligraphy paper of the Comparative Examples 1 to 4 was determined to be greater than each of 13.9mN and m ² / g or more and 23.4mN m ² / g.

The Seohwa paper of Examples 1 to 4 was added 0.02 to 0.04% of a dispersant to a mixed pulp of 5% by weight of cedar bark fiber having an average fiber length of 4.1 mm and 95% by weight of conifer pulp having an average fiber length of 2.6 mm. Tensile paper paper was prepared using a long or medium paper machine after the beating process was stirred for 20 to 40 minutes at a speed of 500 ~ 600rpm in one state, the tension considering the orientation of MD / CD of Seohwa paper of Examples 1 to 4 It is considered that the strength is measured high.

[Experimental Example 2]

After adjusting the Seohwa paper of Examples 1 to 4 and Comparative Examples 1 to 4 in a constant temperature and humidity chamber (temperature: 20 ± 1 ° C., RH: 65 ± 5%) for at least 24 hours, optical characteristics such as whiteness, gloss, and chromaticity Was measured, and the results are shown in Table 2.

Brightness (%) Gloss (75 °,%) Color degree L a b Example 1 73.9 5.4 80.20 -1.35 1.19 Example 2 73.5 5.5 80.96 -0.97 0.78 Example 3 81.2 5.3 81.98 -0.55 -0.92 Example 4 80.3 4.9 81.06 -0.72 -0.67 Comparative Example 1 77.2 4.2 84.73 -0.77 0.34 Comparative Example 2 75.4 3.3 86.38 -0.68 0.91 Comparative Example 3 74.5 3.8 83.23 -0.63 -0.05 Comparative Example 4 76.0 3.4 88.15 -0.44 0.01

As described above, optical characteristics such as whiteness, glossiness, and chromaticity of the calligraphy paper of Examples 1 to 4 are shown in Table 2.

The Seohwa paper of Examples 1 to 4 was added 0.02 to 0.04% of a dispersant to a mixed pulp of 5% by weight of cedar bark fiber having an average fiber length of 4.1 mm and 95% by weight of conifer pulp having an average fiber length of 2.6 mm. After the beating process was stirred for 20 to 40 minutes at 500 ~ 600rpm in one state, it was manufactured by using a long or short paper machine. Therefore, optical properties such as whiteness, gloss, and chromaticity are considered to be excellent.

[Experimental Example 3]

The calligraphy test of calligraphy papers of Examples 1 to 4 and Comparative Examples 1 to 4 was carried out by dropping a commercially available ink on a calligraphy paper using a burette and drying it, and then changing the concentration of the ink by using a spectrophotometer (NF 333, NIPPON DENSHOKU IND). Co., LTD), and the area of the ink spot was measured using an image analyzer. The results are shown in Table 3.

Ink Density (I.D) Area of bolt (mm ² ) Example 1 1.487 0.0064 Example 2 1.363 0.0076 Example 3 1.469 0.0080 Example 4 1.288 0.0132 Comparative Example 1 1.363 0.0158 Comparative Example 2 1.352 0.0163 Comparative Example 3 1.325 0.0127 Comparative Example 4 1.360 0.0086

As described above, the ink density (ID) of the calligraphic papers of Examples 1 to 4 was 1.288 or more and 1.487 or less, respectively, and the area of bolts (mm ² ) was measured to be 0.0064 or more and 0.0132 or less.

The ink density (ID) of the calligraphic papers of Comparative Examples 1 to 4 was respectively 1.325 or more and 1.363 or less, and Area of bolts (mm ² ) were measured to be 0.0086 or more and 0.0163 or less.

The Seohwa paper of Examples 1 to 4 was added 0.02 to 0.04% of a dispersant to a mixed pulp of 5% by weight of cedar bark fiber having an average fiber length of 4.1 mm and 95% by weight of conifer pulp having an average fiber length of 2.6 mm. After the beating process was stirred for 20 to 40 minutes at a speed of 500 ~ 600rpm in one state and manufactured using a long man paper machine or a ring paper machine, the ink-resistance is improved to improve the ink density of the calligraphy paper of Examples 1 to 4 ( ID) is 1.288 or more and 1.487 or less, respectively, and Area of bolts (mm ² ) are considered to be 0.0064 or more and 0.0132 or less.

[Experimental Example 4]

The absorbency test for the calligraphy papers of Examples 1 to 4 and Comparative Examples 1 to 4 was measured by measuring the extent of absorption of commercial ink on the calligraphy paper for 30 minutes by measuring the length thereof, and the results are shown in Table 4.

Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Absorption Length
(mm) 14 15 15 14 28 29 25 16

Thus, the absorption lengths of the calligraphic papers of Examples 1 to 4 were measured to be 14 to 15 mm, respectively, and the absorption lengths of the calligraphic papers of Comparative Examples 1 to 4 were each measured to be 16 mm or more and 29 mm or less.

This is the Seohwa paper of Examples 1 to 4 was added 0.02 ~ 0.04% dispersant to a mixed pulp mixed with 5% by weight of cedar bark bast fiber having an average fiber length of 4.1mm, 95% by weight of conifer pulp with an average fiber length of 2.6mm After the beating process was stirred for 20 to 40 minutes at a speed of 500 ~ 600rpm in one state and manufactured using a long manggi paper machine or ring paper paper machine, it is considered that the ink-resistance is improved.

Claims (5)

It is prepared by papermaking and drying a mixed pulp of 5-15% by weight of cedar bark fiber and 85-95% by weight of conifer pulp.
The method of manufacturing a calligraphic paper excellent in inkability, characterized in that the mixed pulp by using a paper mill paper machine.
The method of claim 1,
The method of manufacturing a calligraphic paper excellent in ink-repellency, characterized in that the mixed pulp by using a long paper machine.
The method of claim 1,
The mixed pulp is a method of producing a calliper paper excellent in tackiness, characterized in that made by mixing 15% by weight of cedar bark fiber and 85% by weight of conifer pulp.
The method of claim 1,
The mixed pulp is subjected to a beating process,
The beating step is a manufacturing method of Seohwa paper excellent in tackiness, characterized in that the stirring for 20 to 40 minutes at a speed of 500 ~ 600rpm in a state in which 0.02 ~ 0.04% dispersant is added to the mixed pulp. delete