KR100782501B1 - Method of manufacturing fine paper effective on anion emission and antimicrobial property - Google Patents

Abstract

A printing paper and a method for manufacturing the same are provided to produce a functional printing paper having an excellent printability, by applying anion elements coated with polymer and silver nanoparticles on the printing paper uniformly. A raw paper(20) of which a thickness is 70~350mum, is prepared by using pulp as a source. A functional solution is applied onto one surface or both surfaces of the raw paper to form a functional layer(10). The functional solution contains 10-100 ppm of anion elements coated with polymer and 10-200 ppm of silver nanoparticles. The functional layer formed on the paper is dried. The pulp is prepared by using a mixture of one or more selected from wood pulp, cotton pulp, bamboo pulp, manila hemp pulp, and reproduction pulp.

Description

Printed paper with anion generating function and antibacterial property and its manufacturing method {METHOD OF MANUFACTURING FINE PAPER EFFECTIVE ON ANION EMISSION AND ANTIMICROBIAL PROPERTY}

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows the cross section of an example of the printing paper of this invention.

2 is a conceptual diagram showing an example of a mechanism of action of anions.

3 is a conceptual diagram showing an antibacterial mechanism of silver (Ag).

4 is an anion generation test report according to Experimental Example 1.

Figure 5 is a photograph showing the results of the antimicrobial experiment according to Experimental Example 2.

6 is an anion generation test report according to Experimental Example 3.

7 is a photograph showing the results of the antibacterial test [Staphylococcus aureus] according to Experimental Example 4.

8 is a photograph showing the antibacterial test result [E. coli] according to Experimental Example 4.

Brief description of the symbols shown in the drawings

10: functional solution treatment layer

20: base layer

The present invention relates to a printing paper imparted with anion generating function and antibacterial properties and a method for producing the same.

Recently, as interest in quality of life and health is rising, the public's interest in well-being is increasing. Attempts to impart functionality of household goods with the interest in the well-being culture have increased, and in recent commercials, many functions of anion or silver nano have been introduced in household goods as well as white appliances such as air conditioners, washing machines and air purifiers.

However, printing paper is produced by surface treatment of paper made of natural pulp using starch or polymer or by coating pigment and binder on the surface. Until now, paper used as printing paper such as book paper generates negative ion. And antimicrobial properties have not been given.

Anions increase the ionization rate of minerals such as calcium, sodium, and potassium in the blood, which leads to alkalinization, endorphins, and enkephyrins, resulting in an increase in the ionization rate of calcium and sodium in the serum and the exchange of electrical substances in the cell membrane. It has a blood purification effect, and the effect of relieving pain by activating the healthy cells in the area of strong pain as well as recovering fatigue and stamina. Anion is also known to stimulate the parasympathetic nerves to stabilize the mind and body, amplify happiness and activate β-endorphins to enhance immunity.

On the other hand, silver nano's antimicrobial mechanism does not have a precisely defined mechanism to date, and nanonized silver attacks bacteria to interfere with metabolism, free radicals generated by nanonized silver destroy bacteria cell membrane, or nanonized silver Mechanisms due to mutations in combination with specific sites are the prevailing theory. Such an antimicrobial mechanism of silver can be simply shown in the conceptual diagram in the accompanying drawings, FIG.

Since paper is used so much that we can easily find it in everyday life, if paper is given anion generating function and antibacterial property, it is an information transmission medium and a material that can positively affect human health. We believe it will be able to position itself.

Accordingly, the inventors of the present invention, as a result of the research efforts to develop a functional paper that can simultaneously give anion generating function and antimicrobial properties to the paper, as a result of the manufacture of paper and base paper using pulp as a material (surface), the surface A functional solution prepared by adding an anion element coated with a polymer and silver nanoparticles to a treatment solution or a coating dye (pigment) solution is coated and dried so that a uniform film is formed on one or both sides of the base paper. The present invention was completed by developing a functional printing paper in which anion generation and antimicrobial activity by silver nano particles are continuously expressed.

Accordingly, an object of the present invention is to provide a printing paper of a new concept and a method for producing the same, which are excellent in printability and simultaneously provided with anion effect and antibacterial property.

The present invention relates to a process for producing raw paper using 1) pulp as a raw material, and 2) 10 to 100 ppm of anion elements coated with a polymer on one or both surfaces of the base paper obtained in the above 1) process and 10 to 200 silver nanoparticles. A method of producing a printing paper imparted with anion generating functionality and antimicrobial properties, which comprises a step of applying and drying a functional solution to which ppm is added.

In addition, the present invention is produced by the above method, on the one or both sides of the base paper 10 to 50 nm in diameter, an anion device coated with a polymer and a diameter of 1 to 100 nm in diameter, the generation of anion coated with silver nano particles in the form of metal particles It includes printing paper to which functions and antimicrobial properties are endowed.

Hereinafter, the present invention will be described in detail.

The present invention relates to a printing paper and a method for manufacturing the same, which are given anion generating function and antimicrobial properties, and more particularly, to manufacture paper and paper using pulp as a paper, and to one or both sides of the produced paper. A negative ion release by an anion element stabilized by a polymer coating is formed by applying a polymer-coated anion element and silver nano particles in the form of metal particles to a functional and antimicrobial solution for anion generation, followed by drying. The present invention relates to a new printing paper and a method of manufacturing the same, which are capable of simultaneously obtaining continuous antimicrobial activity by stabilized silver and furnace particles, which are harmless to the human body.

This invention will be described in detail for each manufacturing process.

The first step is a step of manufacturing paper and base paper using pulp as a raw material.

The pulp may be one or a mixture of two or more selected from wood pulp, cotton pulp, bamboo pulp, manila pulp, recycled pulp, and the like, and the pulp may be processed by a method well known in the art.

Specifically, the natural pulp is diluted with water and then mechanically processed using a machine such as a refining millstone to increase the strength of the paper. The prepared pulp is put into a paper forming process called paper machine, where chemicals are introduced to improve properties such as water resistance and strength, and then raw paper is produced through dehydration, pressing and drying.

The base paper manufactured in the first process is preferably used in the range of 70 ~ 350 ㎛ thickness, the thickness of the base paper can be variously adjusted according to the use of the paper, in the case of general printing paper used as a book Since the average thickness is thinly formed, it is in the range of 70 to 130 μm, and in general, it is in the range of about 130 to 300 μm for printing paper, and in the case of printing paper that requires more durability, it may be formed so as to be in the range of 300 to 350 μm. Obviously, their selection will be adjusted according to the purpose of the paper.

The second step is a step of applying and drying a functional solution to which a polymer-coated anion element and silver nanoparticles are added to one or both surfaces of the base paper produced by the first step.

The base paper formed through the papermaking process undergoes a surface coating process called a size press, in which a functional solution containing a polymer-coated anion element and silver nanoparticles is coated on both sides. The functional solution is a polymer-coated anion device and silver nanoparticles are added, a solution containing a gelatinized starch or a pigment coating solution may be applied.

The purpose of coating (coating) the gelatinized starch in the surface coating process is to reinforce the strength and water resistance of the paper by filling the porous paper surface with the starch, and it can be said that the uniform application of the anion element and the silver nanoparticles is made. have.

Gelatinized starch in the functional solution may be used as an aqueous solution at a concentration of 10 to 30% (w / v), preferably 11 to 25% (w / v), and most preferably 12 to 14% (w / v). However, if the concentration is less than 10% (w / v), sufficient application is difficult, and if it exceeds 30% (w / v), process contamination increases.

Such gelatinized starch is applied to both sides of the base paper at 3 to 20 g / m 2, and if the coating amount is less than the above range, sufficient application is difficult, and it is difficult to secure uniformity of the anion element and silver nano particle coating process thereafter, Phase contamination occurs.

In addition, by adding a polymer-coated anion device and silver nanoparticles to the pigment coating solution can be carried out pigment coating in the surface coating process. That is, pigment coating may be performed in the surface coating process by mixing a functional solution to which the polymer-coated anion device and silver nanoparticles, which are characteristically used in the present invention, are added. The pigment coating may be carried out by a method conventionally performed in the paper industry, preferably two times. It is apparent that the present invention is not limited by the selection of the coating liquid used for the pigment coating.

Since the anion device has a problem in that it is large in size, it is used in the present invention by introducing a polymer for imparting stability to coat the surface of the anion device to be used in a stabilized state. In this case, the polymer coating the surface of the anion device may be used one or a mixture of two or more selected from polyacrylic polymer, polyvinyl polymer, and starch. This allows the negative ions to be generated for a long period of time unlike the existing anion devices in the powder state, and solved the problem of being difficult to apply to paper due to the large size of the anion device in the powder state.

The functional solution containing the pigment coating solution is applied to one side or both sides of the base paper in the range of 10 to 60 g / ㎡, if the coating amount is less than the above range, it is difficult to sufficiently apply the anion element and the silver nano particle coating process Is difficult and process contamination occurs when the above range is exceeded.

In general, the generation of negative ions is known to be generated by cosmic rays and ultraviolet rays, the Renard effect, radioactive materials, tourmaline and the like. Among these, in the present invention, natural minerals and artificially manufactured minerals that emit low anions by themselves can be used. Although not particularly limited, these may be selected from tourmaline, mordenite, germanium and elvan, and representative examples thereof may be used to generate anion semi-permanently by applying tourmaline (torumaline) as an anion element.

The anion device coated with the polymer is used in the nano-size to be in the range of 10 to 50 nm, preferably in the range of 20 to 30 nm, if the size is less than the above range, the stability of the particles is If it falls and becomes large beyond the said range, it will become difficult to apply to the surface of paper.

The anionic device coated with such a polymer is contained in the solution containing the above-mentioned gelatinized starch or the concentration coating solution in a concentration of 10 to 100 ppm, preferably 20 to 50 ppm, and the concentration of the anionic device coated with the polymer is less than 10 ppm. If the negative ion generation capacity is not sufficient, and if it exceeds 100 ppm, it tends to be economically inferior to the negative ions generated, which is not preferable.

In general, silver (Ag), which is known to have antimicrobial activity, has been applied in the form of silver ions (Ag ⁺ ).

Therefore, in the case of the present invention, silver (Ag) particles are used as metal rather than ionic state, and used together with gelatinized starch to solve the problems of the conventional silver applied antimicrobial agent, while improving the stability of the sterilization sustainability of silver It was allowed to express well (more than 400 days).

The silver nanoparticles are preferably used having a particle size of 1 to 100 nm, preferably 1 to 10 nm, in which case silver nanoparticles of less than 1 nm are considered as ions. It is difficult to remain uniformly on the surface of the paper, and when it exceeds 100 nm, the specific surface area is lowered and the antibacterial property is inferior.

In the gelatinized starch or coating liquid, the silver nanoparticles are contained in a concentration of 10 to 200 ppm, preferably 20 to 100 ppm. If the concentration of the silver nanoparticles is less than 10 ppm, the antimicrobial activity is lowered. This becomes further meaning that additional antimicrobial activity is burdensome in production price.

The printing paper of the present invention prepared by the above process is coated on one side or both sides of the base paper with a diameter of 20 to 50 nm, a polymer-coated anion element, and a diameter of 1 to 100 nm and silver nanoparticles in the form of metal particles. Excellent negative ion generating ability and long-term antibacterial activity.

Hereinafter, the present invention will be described in detail with reference to Examples, but the present invention is not limited by the following Examples.

Example  1: field Production  potter Book  Functional evaluation

After diluting the imported natural pulp with water, the pulp prepared through the refining process to increase the strength of the paper by mechanically grinding it using a refiner is put into a paper machine to make paper and then press and dry. Base paper was produced through this (average thickness 77 mu m).

10 ppm of anionic elements (tourmaline) coated with a polymer (polyacryl) having an average diameter of 20 to 50 nm and silver nanoparticles having a mean diameter of 1 to 5 nm [silver nanoparticles prepared by Korean Patent No. 0479847] After the pigment coating solution to which the addition was made, it was used to uniformly 16 g / ㎡ on both sides of the prepared paper in a size press It was applied to prepare a printing paper given the anion generating function and antibacterial properties of the present invention.

Experimental Example  1: Anion generation test

The negative ion generation test of the printing paper prepared in Example 1 was carried out under the following conditions by the Korea Far Infrared Association, and a result of 1,104 / cc was obtained. The test report presented by the Korea Far Infrared Association is shown in FIG. 4.

1) Test Method: KFIA-FI-1042

2) Test specimen: 210 × 295 mm, 190 sheets

3) Test condition: The result is expressed as the number of ions per unit volume by using a charged particle measuring device at room temperature 23 ℃, humidity 35%, and anion water 104 / cc.

Experimental Example  2: antimicrobial activity test

Using the printing paper prepared in Example 1, the antimicrobial activity was measured under the following conditions by the Viettec R & D center, the results are shown in Table 1 and FIG.

Staphylococcus aureus (Staphylococcus aureus ATCC6538) and Escherichia coli (Escherichia coli ATCC 25922) were used as the disclosed strains, and the strain was measured after incubation of the test bacteria at 37 ± 1 ° C for 24 hours with shaking (120 shakes / min). . The test sample was used 2.0 g, phosphate buffer solution was adjusted to pH 7.0 ± 0.2. A control sample was used without adding the functional solution.

As shown in Table 1, it was confirmed that the printing paper of the present invention exhibits excellent antimicrobial activity. In addition, the antimicrobial activity can be directly confirmed by FIG.

 Example 2 Preparation of Surface-Treated Uncoated Printing Paper

After diluting the imported natural pulp with water, the pulp prepared through the refining process to increase the strength of the paper by mechanically grinding it using a refiner is put into a paper machine to make paper and then press and dry. The base paper was produced through [average thickness 70 micrometers].

Silver nanoparticles (silver nanoparticles prepared by Korean Patent No. 0479847) having an average diameter of 1 to 5 nm and a polymer having an average diameter of 20 to 50 nm, The functional solution prepared by adding the polyacrylic) coated anion device (the tourmaline) to the contents shown in the following Table 2 was uniformly coated on both sides at 1.48 g / m 2 in the surface coating process, thereby producing anion function and antimicrobial activity of the present invention. This given printing paper was produced.

Experimental Example  3: negative ion generation test

Using the surface-treated raw paper prepared in Example 3, and commissioned by the Korea Far Infrared Association, an anion generation test was carried out under the following conditions, and a result of 404 / cc was obtained. The test report presented by the Korea Far Infrared Association is shown in FIG. 6.

1) Test Method: KFIA-FI-1042

2) Test specimen: 210 × 295 mm, 200 sheets

3) Test condition: The result is expressed as the number of ions per unit volume by using a charged particle measuring device at room temperature 23 ℃, humidity 35%, and anion water 104 / cc.

Experimental Example  4: antibacterial activity test

Using the printing paper prepared in Example 2, the antimicrobial activity was measured under the following conditions by the Viettec R & D center, and the results are shown in Table 2 and FIGS. 7 and 8.

Staphylococcus aureus (Staphylococcus aureus ATCC6538) and Escherichia coli (Escherichia coli ATCC 25922) were used as the disclosed strains, and the strain was measured after incubation of the test bacteria at 37 ± 1 ° C for 24 hours with shaking (120 shakes / min). . The test sample was used 2.0 g, phosphate buffer solution was adjusted to pH 7.0 ± 0.2. A control sample was used without adding the functional solution.

As shown in Table 2, it was confirmed that the printing paper of the present invention exhibits excellent antimicrobial activity. In addition, the antimicrobial activity can be directly confirmed by FIG. 7 and FIG. 8.

Comparing the results with the results of Experimental Example 2 means that the antimicrobial effect of silver nano can be obtained not only in the coated printing paper but also in the non-coated printing paper.

Experimental Example 5: Printability Test

Actual printing was carried out using the printing paper manufactured according to Example 1, and the printability was evaluated. As a result, the printability was found to be equivalent to that of the existing printing paper.

As described above, according to the present invention, by introducing the polymer-coated anion element and the metallic silver nanoparticles into the printing paper and applying them uniformly, the new concept is excellent in printability, and has the function of generating anion and antibacterial property. Printing paper can be produced.

The printing paper of the present invention can be expected to contribute to the health of the customers in contact with this, especially when applied to the book.

Claims (13)

1) process of manufacturing raw paper from pulp as raw material, 2) A step of applying and drying a functional solution to which 10 to 100 ppm of the anion element coated with a polymer and 10 to 200 ppm of silver nanoparticles are added to one or both surfaces of the base paper obtained in the step 1). Method of producing a printing paper given anion generating functionality and antimicrobial, characterized in that comprises a. The method of claim 1, wherein the pulp is one or a mixture of two or more selected from wood pulp, cotton pulp, bamboo pulp, manila manpulp, and recycled pulp. 2. The method of claim 1, wherein the base paper of step 1) has a thickness in the range of 70 to 350 µm. The method of claim 1, wherein the functional solution used in the step 2) is an anion element coated with a polymer and silver nanoparticles are added to an aqueous solution containing gelatinized starch. The method of claim 4, wherein the functional solution containing gelatinized starch is coated on one or both sides of the base paper in the range of 3 to 20 g / ㎡. The method of claim 1, wherein the functional solution used in the step 2) is a pigment coating solution, wherein a polymer-coated anion element and silver nanoparticles are added. 7. The method of claim 6, wherein the functional solution containing the pigment coating solution is applied to one or both sides of the base paper in a range of 10 to 60 g / m 2. The method of claim 1, wherein the polymer is a polyacrylic polymer, a polyvinyl polymer, and a starch. The method of claim 1, wherein the anion element is an anion-generating natural mineral having a diameter of 10 to 50 nm and an artificially manufactured mineral. The method of claim 1, wherein the anion element is selected from tourmaline, mordenite, germanium, and elvan. The method of claim 1, wherein the silver nanoparticles are metal particles having a diameter in a range of 1 to 100 nm. On one or both sides of the paper, which has undergone the papermaking process, an anion element having a diameter of 10 to 50 nm and a polymer coated thereon, and a silver nanoparticle having a diameter of 1 to 100 nm and a metal particle are coated. Printed paper with antimicrobial properties. 13. The printing paper of claim 12, wherein the polymer is one or a mixture of two or more selected from polyacrylic polymer, polyvinyl polymer, and starch.

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