KR100285276B1 - Manufacturing method of wallpaper having antibacterial property and mildew resistance - Google Patents

Abstract

PURPOSE: Provided is a manufacturing method of wallpaper which is characterized by having antibacterial property and mildew resistance, increasing productivity, coating a surface with an organic antibacterial agent and fungicide, reducing a cost, making it possible to mass-produce, not changing physical property of paper, and being good for the health and useful for silk wallpaper and foam wallpaper. CONSTITUTION: The wallpaper is obtained by: diluting and throwing an organic antibacterial agent and fungicide having water soluble property or water dispersability through a size press part or a gate roll coating part installed in the middle of a primary-papering device; and then coating both surfaces of the paper with the antibacterial agent and fungicide. Thickness of a mildew resistant layer is 0.01-3.00g/m¬2. The organic antibacterial agent and fungicide are benzimidazole, isothiazoline or guanidine derivative.

Description

[Name of invention]

Method of manufacturing wallpaper having antibacterial and anti-fungal function

Detailed description of the invention

[Purpose of invention]

[Technical field to which the invention belongs and the prior art in that field]

The present invention relates to a method of manufacturing a wallpaper having an antibacterial and anti-fog function, and more particularly, by adding a surface coating treatment of an organic antibacterial and / or anti-corrosive agent which is water-soluble or easily dispersible in papermaking process, to a separate internal or external process or final wallpaper Without the additional process of adding antimicrobial and flavoring agent in the processing stage, it provides excellent antimicrobial and antimicrobial function only by surface sizing method on paper machine, and inhibits and prevents the growth of various molds for a long time after wallpapering. It relates to a method for producing a wallpaper having antibacterial and anti-fungal function.

There are tens of thousands of known fungi, most of which grow in humid natural soils or in decomposing organic matter. Among them, various kinds of fungi exist by breeding on floating dusts and walls and floors in indoor environments such as houses, hospitals and restaurants. Among them, about 100 kinds of fungi causing diseases in humans and animals are known, and these diseases-induced fungi include allergic syndrome, mycotoxin poisoning or mycosis causing health disorders by floating spores, It is a kind that causes deterioration and decay of medicines and foods, and breeds in buildings and precision electric machines, and damages materials and parts of machinery. In particular, penicillium citrium and Aspergillus niger, which are detected in a large number of public places and residences in Korea, are divided into human respiratory diseases and allergic diseases. In addition, visual discomfort due to proliferation is also a major cause of harm to the indoor environment.

In the current building materials market, as the awareness of these fungi has spread, consumer complaints have increased due to frequent damage cases. Accordingly, the demand for hygiene products has been gradually spreading, and thus, the products have been developed to fight against antibacterial and antibacterial functions and to differentiate products.

Antibacterial and anti-fog products are being developed for various kinds of stationery, interior decoration, etc. In particular, wallpaper in Korea rarely has been commercialized in Korea with actual antibacterial and anti-corrosive function quality regulations. It is dependent on expensive foreign import wallpaper.

The manufacturing process of processed wallpaper, generally called silk wallpaper or foam wallpaper, is produced by the paper manufacturer to produce a paper with properties suitable for wallpaper use, and then the wallpaper company uses the paper as a base material for PVC coating or foaming. It consists of producing final products through post-processing such as liquid infiltration or printing. In addition, in order to manufacture wallpaper with antibacterial and antiseptic function, most of them are internally and externally added with antibacterial and / or antiseptic agents in the process of manufacturing the base paper used as a base material, or impregnated with foam material or PVC coating using untreated general paper. In the post-processing process, a method of directly mixing and manufacturing a chemical is known. However, the manufacturing method has a problem that the manufacturing cost burden is relatively large compared to the effect.

In addition, as a manufacturing method of the wallpaper having antibacterial and anti-fungal function, a method of coating the surface of the wallpaper with a stamp treatment method by mixing the food storage antimicrobial agent with the water-soluble paste used on the back of the stamp [Korea Patent Publication No. 96-34581] Resin pellets for coating antimicrobial and anti-foaming functions on the surface layer of the interior decorative finishing materials such as wallpaper, pulp slurry, and the like by adding an anti-bacterial deodorizing effect by internally mixing an extract of scrubber, etc. [0003] Japanese Patent Laid-Open No. 9-165309 is known.

In addition, the patent in the field similar to this is not a wallpaper, but a packaging paper using a mixture of zeolite and chitosan, etc. in an internal / external method [Korea Patent Publication No. 95-27097], an insect repellent that impregnated with a fungicide and shielded with paraffin wax. Manufacturing method of bag paper for cultivation for industrial use [Korean Patent Publication No. 93-19936], Manufacturing method of insulation and sound insulation of residential building including mold absorbent [Korean Patent Publication No. 95-702469], and ceramic materials and ink And antimicrobial paper production methods (Korean Patent Publication No. 97-59377), etc., in which an antimicrobial agent is mixed with a melamine resin and impregnated and applied.

However, this conventional method is a method of producing in large quantities by applying inorganic antimicrobial agents effective for inhibiting bacterial growth or by including processes such as incorporation or impregnation in raw materials, which are complicated in manufacturing conditions and accordingly to conventional paper machines. It is not suitable for, especially inorganic antimicrobial agent has the disadvantage that the effect is not great for fungi, such as black mold.

Accordingly, the present inventors collected domestic or foreign wallpaper specimens known to have an anti-fungal function, and tested the fungal growth by a predetermined method, and found that the effect of inhibiting the fungal growth was insignificant except for some foreign products. In most cases of foreign wallpaper, it is an elution type in which antimicrobial agent escapes out of the test specimen, and its expiration date may be shortened in terms of function and effect in actual use.

As another example, the manufacturing method applying the mold suppression method through the control of the propagation environment, rather than the direct fungal control such as the coating of hydrophobic substances or the addition of an antistatic agent, is not affected by more than 100 different fungi and habitats. In the case of fungi, the effect cannot be expected.

In particular, in recent years, due to the ease of construction, the method of directly adhering to the gypsum board without the use of super medium is increasing, and the harmfulness of formalin contained in the wallpaper paste paste increases the risk of fungal contamination when the use thereof is suppressed. have. Conventional anti-foaming paper has been proven to be effective by the manufacturer's arbitrary test method, rather than by standardized quality evaluation criteria or reliable institutional testing. And sufficient effect of the anti-fog function can not be expected.

[Technical problem to be achieved]

Therefore, the present inventors can utilize the existing equipment without additional equipment by introducing a method of surface coating the coating liquid containing the organic antibacterial and / or antimicrobial agent in the conventional papermaking process instead of the method of internal or external coating of the antimicrobial and / or antimicrobial agent. Because the antibacterial and antiseptics used are easily hydrogen-bonded with paper fibers, the antimicrobial and antiseptics are easily penetrated into the base paper. The present invention has been completed by knowing that the effect can last for a long time even by use.

Therefore, the above-mentioned effect can be obtained by surface-coating the organic antibacterial and antiseptics by effectively controlling the propagation of fungi such as black mold and bacteria such as Escherichia coli, which are not expected to be activated by inorganic antiseptics and antiseptics. It is an object of the present invention to provide a method for producing a wallpaper having an antibacterial and anti-fungal function.

[Configuration and Function of Invention]

The present invention is a method for producing a wallpaper having an antibacterial and anti-fog, characterized in that the coating of the anti-fog layer on both sides of the paper by surface coating the organic antibacterial and anti-corrosive agent which is water-soluble or easily dispersible during papermaking process. .

The present invention will be described in more detail as follows.

Wallpaper having an antibacterial and anti-fog function produced by the manufacturing method of the present invention is manufactured by coating the anti-foaming agent within a few μm thickness in the production of the same conditions as the normal wallpaper base, all the injected antibacterial and anti-fog agent is present in the surface layer of the base unit It maximizes the antibacterial and anti-fungal efficiency per area, and the sustainability of antibacterial and anti-fungal power is also maintained. In addition, it will fundamentally block the contact of bacteria or fungi from the wall or adhesive during construction.

The base paper applied to the present invention should be basically suppressed the excessive absorption of moisture by the paste for the purpose, in order to equal the excellent adhesion to the PVC coating or foam forming resin on the surface with post-processing aptitude, high size and wet strength and It must have surface peel strength. It contains 70 to 90% by weight of conventional bleached kraft pulp to prepare raw paper under such conditions, and it contains 10% by weight of fillers such as calcium carbonate or talc, and additives such as internal additives, starch, wet strength enhancers and dyes. ~ 30% by weight of raw paper is produced in a conventional paper machine with a basis weight of 80 ~ 140 g / ㎡.

At this time, the antibacterial and flavoring agent is diluted and added through the size press part or the gate roll coating part installed in the middle of the conventional paper machine, and the coating amount of the active ingredient is coated on both sides with 0.01 to 3.00 g / m 2 and dried through the drying part to give the final antibacterial and flavoring effect. A wallpaper base with a function is created.

Inorganic type may be used as the antimicrobial and flavoring agent used in the present invention, but in particular, it is more effective to use an organic type having excellent anti-foaming function of molds such as black mold, and to select and use a water-soluble or excellent water dispersing ability for ease of operation. There is a need. Therefore, the antimicrobial and antimicrobial agent used is advantageous to products containing functional groups that can be settled by pulp fiber and hydrogen bonding or electrostatic attraction. In the case of emulsion type antimicrobial agent, the average particle size is small and easily inside the fiber. Penetration is more effective because there is less deviation from the product. Antimicrobial and flavoring agents which can be applied to the present invention include benzimidazole, isothiazoline, guanidine derivatives and the like. In addition, the coating solution containing the antibacterial and / or anti-flavoring agent may include a binder such as starch oxide or PVA within the range of ease of workability and large deformation of paper properties, but may be diluted or dispersed in water. The concentration of antiseptic components discarded after coating in the size press section or gate roll coating section of the antibacterial and / or antiseptic agent should be managed in consideration of the treatment capacity of the wastewater treatment plant and the microbial capacity by the activated sludge method.

The method of testing the flavourability of the raw paper produced by the above process is variously presented in the test standard in Korea, but the direct contact ASTM G-21 and the indirect contact KSM 5000 are mainly used. The strains used for the test are applied to the most commonly found Aspergillus niger, Penicillium citrium, and 4 to 5 other isolates of wallpaper. The results are evaluated by visual judgment after a certain period of time under certain conditions, and the former of the above two test methods is judged to be aesthetics when mold growth is confirmed to be less than 10% compared to the initial stage.

In the case of pre-treatment on the base paper for processing wallpaper, after-processing companies using this as a base material can advantageously manufacture the finished product without additional antibacterial or anti-finishing process.

Although this invention is demonstrated in detail based on an Example, this invention is not limited to an Example.

Production Example Production of Base Paper

The conventional bleached kraft pulp is used by beating by using a laboratory velitor at Yeosu 400 ~ 500 ㎖ CSF, the composition ratio (dry basis) is 80% by weight, the filling material of talc or calcium carbonate is 10-18% by weight, It is composed of 2 ~ 10% by weight of other additives (AKD) and gelatinized cationic starch to produce a sheet of 100 g / ㎡ basis weight, using a laboratory super calender calendering to 40 ~ 80 seconds Was prepared.

Example 1

Guanidine-type antibacterial and antiseptics (SK Corporation, YSB-WT or YSB-TX) and binders were mixed using polyvinyl alcohol or starch oxide solution at a mixing ratio of 1 to 2:98 to 99, and the total concentration was After adjusting with water to a concentration of 5%, the coated amount of the active ingredient of the anti-foam antimicrobial 0.01 ~ 0.05 g / ㎡ on both sides of each coating 1.5 g / ㎡ per side to prepare a base paper for processing wall paper with antibacterial and anti-fog function.

Example 2

In the same manner as in Example 1, but using an antibacterial and flavoring agent alone without a binder, the coating amount of the anti-flavoring component was 0.10 ~ 1.00 g / ㎡ on both sides basis to prepare a base paper for processing wallpaper having antibacterial and anti-fog function .

Example 3

In the same manner as in Example 1, but using an antibacterial and flavoring agent containing a benzimidazole component (F-356, Intace, France) to prepare a base paper for processing wall paper having an antibacterial and anti-bacterial function.

Example 4

Using the flavoring agent of Example 3, and used alone without a binder, the coating amount of the flavoring component is 0.10 ~ 1.00 g / ㎡ on both sides basis to prepare a base paper for processing wallpaper having antibacterial and flavoring function.

Example 5

In the same manner as in Example 1, but using a flavoring agent (French Intace, B-43f) containing the isothiazoline component was prepared a base paper for processing wallpaper having antibacterial and anti-fog function.

Example 6

Using the flavoring agent of Example 5, a base paper for processed wallpaper having an antibacterial and flavoring function was prepared in the same manner as in Example 2.

Comparative Example 1

In the same manner as in Example 2, but using a PVA or starch oxide starch liquid instead of a flavoring agent to prepare a base paper for processing wall paper having an antibacterial and flavoring function.

Comparative Example 2

In the same manner as in Example 1, but using an inorganic antimicrobial agent containing silver-zirconium and far-infrared ceramic material in a 1: 1 manner instead of a flavoring agent to prepare a base paper for processing wall paper having antibacterial and anti-fog function.

Comparative Example 3

In order to compare with the above example, a commercially available Mozel TEX (LG Chem) specimen, which is known to have an anti-fog effect, was used in the domestic processed wallpaper.

[Comparative Example 4]

A commercially available wall paper sample was used in the same manner as in Comparative Example 3.

[Comparative Example 5]

In the same manner as in Comparative Example 3, four samples having an anti-fog function (exact name and manufacturer are unknown in Japan, Italy, the United Kingdom, and Canada) were used.

Experimental Example 1 Anti-Fight Test

Aspergillus niger (Aspergillus niger), penicillium sheet as a test strain to test the anti-microbial power of the base paper sample for the antibacterial and anti-fungal function prepared in Examples 1 to 6 and Comparative Examples 1 to 5 Tests in accordance with ASTM G-21 were performed using strains isolated from penicillium citrium and contaminated wallpaper. The test period was 4 weeks in total, and each week was measured visually on the basis of the growth status of the fungus divided into 5 grades as follows. The results are shown in Table 1 below.

Fungal Growth:

Mold does not grow at all: 0

Mold grows below 10%: 1

Mold grows below 20%: 2

Mold grows below 30%: 3

Mold grows above 30%: 4

Experimental Example 2 Antibacterial Activity Test

In order to test the antimicrobial activity of the specimen of Experimental Example 1 using the E. coli as a test strain was tested according to KS-0693 and was determined by calculating the bacteria reduction rate (%). At this time, the reduction rate K is calculated by the following equation 1 and the results are shown in Table 2 below.

In Equation 1, A represents the number of viable cells when only the test bacteria were shaken for a prescribed time; B represents the viable count after shaking of the sample.

Looking at the above results it can be seen that in the case of Examples 1 to 4 shows excellent results in both the anti-fog and antibacterial activity, in the case of Examples 5 to 6 it is excellent in the anti-foaming, but the color of the sample is slightly yellow There are disadvantages. In the case of Comparative Example 5, the anti-fogging force is excellent but the antibacterial activity is slightly decreased.

[Effects of the Invention]

In the present invention, the method for manufacturing the processed wallpaper paper of the anti-corrosion treatment does not need an internal method, so that continuous production is possible without changing the processing conditions on the paper machine for mass production. This can greatly reduce the cost burden for processing.

In addition, it is possible to mass-produce using existing equipment, and does not affect the physical properties of the basic paper at all, so that various secondary processing is easy, and thus, the present invention can be expected to develop antimicrobial processing technology for papers.

Silk wallpaper or foam wallpaper, which is finally processed by the original paper produced by the present invention is a conventional general wallpaper products that are discolored due to the occurrence of fungi (fungus) due to inadvertent construction of the worker when applied to the building interior, such as general houses, apartments, hotels It is possible to sufficiently solve the shortcomings, and to prevent the proliferation of fungi, which are known as the cause of various diseases such as food poisoning can be expected to protect the health of the user.

Claims (2)

In the method of manufacturing a wallpaper having antibacterial and anti-foaming function by applying a conventional organic antibacterial and flavoring agent to paper, the water-soluble or water dispersible through the size press portion or the gate roll coating portion installed in the middle of the paper machine during the papermaking process A method of producing a wallpaper paper, characterized in that the surface coating of the antimicrobial and flavoring agent is 0.01 to 3.00 g / m 2 while the organic antibacterial and flavoring agent is diluted. The method for producing wallpaper paper according to claim 1, wherein the organic antibacterial and / or flavoring agent is benzimidazole, isothiazoline, or guanidine derivative.