Manufacturing process for Chinese art paper for elaborate paintings

Abstract

The invention belongs to the field of Chinese art paper manufacturing, and particularly relates to a Chinese art paper manufacturing process for elaborate paintings, which comprises the following steps of: preparing pulp according to a Chinese art paper pulp ratio, and sequentially fishing and drying the paper, and after the paper drying operation is completed, spraying the surface of the Chinese art paper with alkalescent water with the pH value of 8-9, and then drying under the conditions that the temperature is 50-60 DEG C and the humidity is more than 50%. According to the scheme, after the Xuan paper added with the PAE resin is manufactured, the Xuan paper is sprayed with the weakly alkaline water and dried, a weakly alkaline, high-temperature and high-humidity environment is provided for the PAE resin to accelerate curing of the PAE resin, and the PAE resin is quickly crosslinked within limited time, so that the wet strength of the Xuan paper is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of rice paper making, and particularly relates to a making process for a rice paper for meticulous painting. BACKGROUND

[0002] Rice paper, as an important representative of Chinese traditional culture, is the main carrier of artistic forms such as calligraphy and painting. In order to carry forward traditional culture and improve the understanding of handmade rice paper making, a handmade rice paper making visiting line is designed and built. Interested visitors can also participate in the making of handmade rice paper on site, and can try to write or draw on the handmade rice paper after making.

[0003] Most of the visitors do not have the learning experience of traditional brush calligraphy or painting, and only a few have learned the basic calligraphy or painting. Therefore, during the process of trying to write or draw, the visitors often repeatedly describe and color, and the phenomenon of paper breakage and leakage occurs from time to time. It can be seen that ordinary rice paper is not suitable for this purpose. Therefore, polyamide epichlorohydrin resin (PAE resin) is added to the handmade rice paper on the visiting line, which can improve the repeated coloring of paper products and is suitable for meticulous painting.

[0004] PAE is a cationic neutral sizing agent, which can be well adsorbed on the negatively charged plant fibers due to the positive charge carried on its surface, and can improve the wet strength of paper. Wet strength refers to the mechanical strength (such as tensile strength and tear resistance) of paper that can still be maintained even after being completely immersed in water. Therefore, it is also called wet strength agent. The product itself is usually neutral or slightly alkaline, so it is called "neutral glue". It is not called "glue" because it is sticky like glue, but because it can form an irreversible "cross-linked network" between fibers, which still exists even after the paper is immersed in water, thereby locking the fibers and providing wet strength.

[0005] Usually, PAE resin is diluted and added to the pulp preparation tank, and the addition amount is 0.1-1.0% of the dry pulp weight. It needs a certain "maturation" time, that is, the paper needs to be placed for a period of time (usually 24-72 hours) after drying to reach the maximum wet strength.

[0006] However, most of the rice paper made on the visiting line is used on site, so it is inevitable that the PAE resin will not have enough time for writing and drawing, resulting in that the rice paper has not yet reached the maximum wet strength, and repeated description and coloring will still cause paper breakage and leakage, affecting the recognition of visitors to handmade rice paper.

[0007] Therefore, it is necessary to improve the wet strength of the present rice paper. SUMMARY

[0008] The purpose of this invention is to provide a method for making Xuan paper for meticulous brush painting, which improves the wet strength of freshly made Xuan paper, shortens the curing time of sizing agents, and avoids repeated painting and coloring, which can easily cause cracking.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a process for making Xuan paper for meticulous brush painting, wherein the pulp is prepared according to the pulp ratio and then the paper is scooped and dried in sequence, wherein PAE resin is added during the pulp preparation process; after the paper drying is completed, the surface of the Xuan paper is sprayed with weak alkaline water with a pH value of 8-9, and then dried under the conditions of temperature of 50-60℃ and humidity of more than 50%.

[0010] The above scheme involves spraying the Xuan paper with weak alkaline water and drying it after the PAE resin is made. This process provides a weakly alkaline, high-temperature, and high-humidity environment for the PAE resin to accelerate its maturation and allow the PAE resin to cross-link rapidly within a limited time, thereby improving the wet strength of the Xuan paper. Detailed Implementation

[0011] The technical solution of the present invention will be further described in detail below.

[0012] A process for making Xuan paper for meticulous brushwork painting involves preparing the Xuan paper pulp according to the specified ratio, followed by paper-making and drying operations. PAE resin is added during the pulp preparation process. After drying, the surface of the Xuan paper is sprayed with weakly alkaline water with a pH of 8-9, and then dried at a temperature of 50-60℃ and a humidity of over 50%.

[0013] PAE resin undergoes accelerated cross-linking and maturation under weakly alkaline conditions (pH 8-9). It's crucial that the pH not be too high, otherwise the PAE resin will easily hydrolyze, preventing the wet strength from improving and making the Xuan paper difficult to preserve. Furthermore, a high-temperature environment of 50-60℃ significantly accelerates the cross-linking reaction between PAE and cellulose hydroxyl groups, resulting in a rapid increase in the wet strength of the Xuan paper. Excessively high temperatures are detrimental to the PAE cross-linking reaction and can also damage the plant fibers, affecting the quality of the Xuan paper. The aforementioned weakly alkaline water can be a low-concentration aqueous solution of sodium hydroxide, potassium hydroxide, sodium carbonate, or potassium carbonate.

[0014] The drying process involves baking for 10-20 minutes. It is crucial to maintain a high-humidity environment during this process; otherwise, low humidity will reduce the paper's flexibility and affect its quality. By accelerating the maturation of the Xuan paper according to the above method, the maturation level can be increased to 70-80% of the level of natural maturation in a short time, effectively shortening the maturation time.

[0015] The pulp composition for Xuan paper is 50-70% sandalwood bark pulp and 30-50% dragon's beard grass pulp. Compared to ordinary straw fiber, dragon's beard grass fiber is stronger, making it suitable for making fine brush painting paper. It is also less expensive. Visitors on the tour route often experiment with papermaking, resulting in a high waste rate. Furthermore, the required shelf life after papermaking is not high, making dragon's beard grass pulp a suitable choice.

[0016] Before the pulping process, the pulp consistency is 50±2SR, and the bleaching rate of the sandalwood bark pulp is 11%. The pulp consistency and bleaching rate are both lowered compared to ordinary Xuan paper, which is more conducive to improving the strength of Xuan paper. It is suitable for painting products made of Xuan paper for meticulous brushwork. This product has good softness, slow water absorption, and strong ink absorption, which allows for repeated ink application and is suitable for meticulous brushwork painting.

Claims

1. A technique for making Xuan paper for meticulous brushwork painting, characterized in that: After preparing the Xuan paper pulp according to the specified ratio, the paper is then scooped and dried. PAE resin is added during the pulp preparation process. After the paper is dried, the surface of the Xuan paper is sprayed with weakly alkaline water with a pH of 8-9, and then dried at a temperature of 50-60℃ and a humidity of over 50%.

2. The process for making Xuan paper for meticulous brushwork painting according to claim 1, characterized in that: The drying process involves baking for 10-20 minutes.

3. The process for making Xuan paper for meticulous brushwork painting according to claim 1, characterized in that: The pulp composition for Xuan paper is 50-70% sandalwood bark pulp and 30-50% dragon's beard grass pulp.

4. The process for making Xuan paper for meticulous brushwork painting according to claim 1, characterized in that: Before the pulping process, the pulp consistency is 50±2SR, and the bleaching rate of the sandalwood bark pulp is 11%.

5. The process for making Xuan paper for meticulous brushwork painting according to claim 1, characterized in that: The weakly alkaline water with a pH of 8-9 is an aqueous solution of sodium hydroxide, potassium hydroxide, sodium carbonate, or potassium carbonate.