WO2015174646A1

WO2015174646A1 - Method for making functional korean paper enabling waterproofing, windproofing, and moisture permeability

Info

Publication number: WO2015174646A1
Application number: PCT/KR2015/003999
Authority: WO
Inventors: 최성일; 차종순
Original assignee: 예원예술대학교산학협력단; 최성일
Priority date: 2014-05-15
Filing date: 2015-04-22
Publication date: 2015-11-19
Also published as: KR20150132683A

Abstract

The present invention relates to a method for making functional Korean paper enabling waterproofing, windproofing, and water permeability and, more specifically, to a method for making functional Korean paper enabling waterproofing, windproofing, and water permeability, the method comprising: a mulberry fiber preparing step of preparing mulberry fibers from stems of collected mulberry trees; a mixture forming step of mixing the mulberry fibers with Abelmoschus manihot, a waterproofing agent, and a wet strength enhancer, to form a mixture; a paper making step of making Korean paper from the mixture using a densely woven blind; and a drying step of dehydrating the paper and drying the paper at a temperature of 60-70°C to form Korean paper.

Description

Manufacturing method of functional Hanji that is waterproof, windproof and breathable

The present invention relates to a method for producing a functional Hanji that is waterproof, windproof and breathable, and more specifically, a step of manufacturing a mulberry fiber from the stem of the collected mulberry; A mixture forming step of forming a mixture by mixing the mulberry fiber with a mulberry, a waterproofing agent and a wet strength enhancer; A papermaking step of floating hanji using the feet made by weaving the mixture closely; And a drying step of forming the hanji by dehydrating the paper and drying it at a temperature of 60 to 70 ° C. It relates to a method for manufacturing a functional hanji that is waterproof, windproof and moisture permeable.

In general, Hanji is made from bast fibers obtained by processing the bark stripped from the bark of twigs or other herbs. Hanji is a unique paper representing Korea, and its fiber length is about 10mm, so it is a long-fiber bast fiber, which is excellent in tissue bonding, and it is tough and not easily torn. In addition, Hanji's soft material makes it comfortable to touch, well ventilated, and flexible, so it is easy to make origami work like Hanji craft. It is easy to pick up colored paints as well as ink, and it is effective for soundproofing and transmits light. Also excellent.

Since ancient times, traditional hanok has been used as a tool necessary for daily life using materials with high affinity for nature, such as the window. The characteristics and strengths of Hanji are that it has a unique color and the painting and surface texture and lighting texture are different depending on the thickness and length of fiber. I can say it. Hanji has tiny tiny holes that facilitate the flow of air, called pores, which act as filters and allow for internal ventilation. When there is a lot of moisture inside the room, it absorbs it, and the air in the room is dried, and when the air is dry, it emits moisture, and has elasticity to naturally adjust to maintain proper temperature and humidity.

Korean paper is usually classified according to its quality and title, and it has been mainly used as a window paper applied to a door or window of a hanok, a copy paper used as an old man of ancient books, a Japanese paper used for calligraphy or soldiers, and a Taiji paper used for greeting cards or wedding invitations. . Hanji has many differences from ordinary paper because it is unique in raw materials and manufacturing methods. In order to prevent the penetration of water, ordinary paper is added with rosin size and aluminum sulfate and sizing under acidic conditions. When paper is manufactured under these acidic conditions, the paper has a strong acidity of pH 4 ~ 5.5. As time goes by, the hydrolysis deteriorates slowly, resulting in weak preservation. In addition, unlike traditional paper manufacturing methods, Hanji does not use a fiber-promoting bond agent such as synthetic resin to improve the strength of paper, so that dry and wet strength can be expressed by the interaction between bast fibers of the mulberry and the knot will be.

On the other hand, in order to stay away from environmental hormones generated from buildings and volatile organic compounds generated from new buildings, the necessity of using the interior materials of buildings using natural materials has emerged. .

When manufacturing articles in Korean paper or applying them to various household goods or crafts, there were problems such as decay due to contamination, and microorganisms in the air to attach and multiply to reduce the durability of articles made of Korean paper or Korean paper applied for various purposes. .

In order to solve the above problems, Korean Patent No. 10-0862991 uses the strong adsorption force of apatite to adsorb and hold microorganisms and contaminants even in the absence of light, and to prevent photocatalytic activity in the presence of light. It is possible to completely decompose microorganisms and contaminants, and has been described as "Hanji and its manufacturing method" having antibacterial and deodorizing performance even in the absence of light.

However, the above-mentioned technique requires the use of a photocatalyst titanium dioxide raw material and a mixture of compounds, and therefore requires special supervision and control of the unique materials, and care must be taken to use a compound that does not harm the human body as much as possible.

On the other hand, in Korean Utility Model Registration No. 200351525 “Hanji Wall Paper Containing Photocatalyst”, the wallpaper is made of a natural paper made of a cotton fabric or a hemp fabric attached to the Hanji layer and a Hanji layer which is coated with an adhesive to provide an adhesive surface on the wall. Consists of a wallpaper layer and a printing layer formed on top of the natural fiber wallpaper layer, wherein the Hanji layer and the natural fiber wallpaper layer are vanadium pentoxide (V 2 O 5), oxidized to 100 parts by weight of tungsten oxide (WO 3). At least two selected from the first component containing zinc (ZnO) and titanium dioxide (TiO2) and silver ions (Ag +), copper ions (Cu +), platinum ions (Pt +), cerium ions (Se +) and lithium ions (Li +) A technique is described in which the second component comprising the component is dipped in a solution containing 2 to 3 parts by weight and dried.

However, the above-mentioned technology has the disadvantage that it is not only limited to the use of Hanji as wallpaper, but also that Hanji is applied to a part of the wallpaper composed of multiple layers, and when used as interior materials of buildings, it is directly exposed to light such as sunlight. Because it does not receive a light bulb of a particular wavelength even if the efficacy is greatly reduced. In addition, at night or in the rainy season, there is a problem in that the efficiency of the photocatalyst is extremely reduced, as well as corruption and damage caused by contaminants or microorganisms.

As such, traditional Korean paper has a weak bearing capacity, so it has a weakness in terms of high fixability in order to process it when used as industrial materials.Because it is well ventilated, the winter effect is weak because it does not block the inflow of external air. It has been limited in the development of functional products and applications because it is weak and over time, a strong light and heat deformation including rain and moisture occurs.

The present invention is to make a mixture by mixing the mulberry in the mulberry fiber obtained by steaming or boiling the mulberry with steam or boiled, and in the Korean paper comprising a general process of removing water and drying after papermaking, compared with the traditional Korean paper And by adding a wet strength enhancer and drying at a low temperature of 60-70 ° C., it enhances durability, improves tensile strength, prevents rain or water from penetrating, and is excellent in discharging moisture. It aims at providing the manufacturing method.

In addition, it aims to provide a functional paper that can be used as a variety of industrial materials and building materials to supplement the shortcomings of the paper used only for general interior or crafts, and a manufacturing method that can be easily manufactured.

In order to solve the problems described above, the present invention provides a step of manufacturing a mulberry fiber from the stem of the collected mulberry; A mixture forming step of forming a mixture by mixing the mulberry fiber with a mulberry, a waterproofing agent and a wet strength enhancer; A papermaking step of floating hanji using the feet made by weaving the mixture closely; And a drying step of forming the hanji by dehydrating the paper and drying at a temperature of 60 ~ 70 ℃.

In addition, in the present invention, the mulberry is 3 to 5 parts by weight based on 100 parts by weight of the mulberry fiber, the waterproofing agent is mixed to 3 to 10 parts by weight based on 100 parts by weight of the mulberry fiber, the wet strength enhancer is based on 100 parts by weight of the mulberry fiber It is characterized in that 3 to 10 parts by weight are mixed.

In addition, the present invention is characterized in that it comprises the step of adhering natural fibers or synthetic fibers to the dried hanji.

The present invention made as described above is made by mixing steamed or boiled mulberry with steamed or boiled mulberry to make a mixture, and after the papermaking, including the general process of removing water and drying, compared with conventional Korean paper By adding a waterproofing agent and a wet strength enhancer, drying at a low temperature of 60 ~ 70 ℃ when drying, improves durability, improves tensile strength, prevents the ingress of rain or water, and is excellent in the discharge of moisture. It can provide a method for producing.

(1) Doc fiber manufacturing step

Cut the stems of the collected mulberry, pour it in water, seal it, steam it for 2 to 3 hours so that the bark can be easily peeled off, and then peel off the bark to get black skin. Dokmu jinmu get black skin, peel off the outer skin to become white skin. The skin is removed from the skin and dried in the sun to make white skin after sun-bleaching. Soak the white skin in cold water for 1-2 days and burn the ash formed by burning lye or buckwheat or soybean with caustic soda in hot water and boil it in hot water for 8 hours at 100 ℃ to flow the soft fiber. Soak it in water, wash it, put it on a stone plate or a stone, and beat it with a bat for about an hour.

(2) mixture formation step

The mulberry fiber obtained in the step of manufacturing the mulberry fiber was added to the squirt of the sticky water squeezed from the root of the mulberry root (hwanggyugyu) mixed well to make the mixture evenly loosen the waterproofing agent and the wet strength enhancer.

Here, the mulberry is mixed 3 to 5 parts by weight based on 100 parts by weight of the mulberry fiber, the waterproofing agent is mixed to 3 to 10 parts by weight based on 100 parts by weight of the mulberry fiber, the wet strength enhancer is 3 to 100 parts by weight of the mulberry fiber Mix 10 parts by weight.

When the amount of mulberry is less than 3 to 5 parts by weight, the viscosity of the mixed solution is weakened, and the bundles of fibers and water fall out quickly, and the fibers are not evenly distributed. Therefore, irregular paper writing is formed, and when more than 3 to 5 parts by weight, the viscosity is too strong. Poor drainage leads to poor productivity and thinner paper. When the amount of the waterproofing agent is less than 3 to 10 parts by weight, the waterproofing function is reduced, and when more than 3 to 10 parts by weight, the moisture permeability is rather reduced. When the wet strength enhancer is less than 3 to 10 parts by weight, the strength is weak for processing when used as industrial materials, and more than 3 to 10 parts by weight reduces the flexibility of the fiber.

(3) grassland stage

Using a foot made of finely woven bamboo, etc. from the mixture made in the mixture forming step is a step of floating Hanji by floating the mixture mixed with the mulberry, waterproofing agent and wet strength enhancer to remove the water.

In the present invention, the method of floating Korean paper can be appropriately selected from uni-knit, which is a method of making traditional Korean paper, and twin-knit, which is a method currently used a lot.

(4) drying step

The hanji obtained through the papermaking step contains water, so that the hanji is completed through a drying process after dehydration. In general, the temperature conditions in the step of drying the hanji is carried out at 90 ~ 100 ℃, in the method of producing a high-strength functional hanji is dried under the conditions of 60 ~ 70 ℃. If the drying temperature is 60 ~ 70 ℃ or less, the drying property is lowered, which leads to a decrease in productivity, and the bonding between the mixtures is insufficient, so that the functionality is lowered. If the drying temperature is 60 ~ 70 ℃ or more, the strength is not different from the general one. It cannot be added.

The drying method may be appropriately selected according to the drying method of conventional general paper such as sunlight drying or iron plate drying.

(5) fiber bonding step

As a step of adhering natural fibers or synthetic fibers to the hanji formed through the drying step, to adhere the natural fibers or synthetic fibers through a thermoplastic adhesive. At this time, the adhesive used is an acrylic adhesive so as not to change the structure or properties of the surface of the hanji. Here, the natural fiber is characterized in that cotton, silk, wool, hemp or Hanji fabric, the synthetic fiber is characterized in that the poly- or nylon.

In the fiber bonding step, natural fiber or synthetic fiber may be bonded to one surface of the hanji, or natural fiber or synthetic fiber may be bonded between the hanji and the hanji.

When the natural fiber or synthetic fiber is bonded to the hanji as described above, the tensile strength is increased to improve the durability and at the same time can make a hanji to compensate for the weakness of water and moisture.

Claims

A mulberry fiber manufacturing step of producing mulberry fibers from the collected stems of mulberry;

A mixture forming step of forming a mixture by mixing the mulberry fiber with a mulberry, a waterproofing agent and a wet strength enhancer;

A papermaking step of floating hanji using the feet made by weaving the mixture closely; And

Dehydration of the paper and dried at a temperature of 60 ~ 70 ℃ drying step to form Hanji;

Method for producing a functional hanji waterproof and windproof and breathable, characterized in that comprises a.
According to claim 1, wherein the mulberry is mixed 3 to 5 parts by weight based on 100 parts by weight of the mulberry fiber, the waterproofing agent is mixed 3 to 10 parts by weight based on 100 parts by weight of the mulberry fiber, the wet strength enhancer is 100 parts by weight Waterproofing, windproof and breathable functional hanji production method, characterized in that 3 to 10 parts by weight of the mixture.
The method according to any one of claims 1 to 2, wherein the method comprises the step of adhering natural fibers or synthetic fibers to the dried Korean paper.