KR20060034951A - A tube containing antibacterial agent - Google Patents

Abstract

The present invention provides a silicone tube comprising 0.001 to 5 percent by weight of antimicrobial material per weight of the total silicone tube.

According to the present invention, not only the contaminants such as bacteria and fungi present in the fluid flowing inside the silicon tube can be removed, but also the effect of preventing the contamination of the inner wall surface of the silicon tube by such contaminants There is.

Silicone tube, antibacterial material, bacteria, fungus

Description

Silicone Tube Containing Antimicrobial Agents {A Tube Containing Antibacterial agent}

1 is a block diagram showing an embodiment of a silicon tube according to the present invention,

2 is a cross-sectional view of a silicon tube according to the present invention,

3 is a view showing the results of Experimental Example 1 according to the present invention,

4 is a view showing another result of Experimental Example 1 according to the present invention;

5 is a view showing the results of Experimental Example 2 according to the present invention,

6 is a view showing another result of Experimental Example 2 according to the present invention.

<Description of Symbols for Main Parts of Drawings>

2: tube 4: antimicrobial substance

6: surface coating layer

The present invention relates to a tube containing an antimicrobial substance, and more particularly, to a silicone tube containing an antimicrobial substance for removing contaminants such as bacteria, mold and the like and a method of manufacturing the same.

A general tube provides a path through which a fluid such as gas or liquid can move, and is used in various forms depending on the purpose of use.

However, among the tubes described above, tubes that provide a movement path for water or the like used in homes or large-scale facilities, and tubes used for household or industrial water purifiers, are important for tube selection from the user's point of view. This may be a consideration.

In particular, when the tube is left in a liquid such as water for a long time, bacteria or microorganisms inhabit the inner wall of the tube to contaminate the fluid flowing through the tube, and the aforementioned microorganisms cause stains on the inner wall of the tube. It may cause discomfort to the user, and when the tube is composed of an organic substance, there is a problem that the organic substance constituting the tube is eluted with a solution.

In addition, when the air moves into the tube, contaminants contained in the air flowing through the tube, for example, bacteria, mold, and malodorous particles are adsorbed on the inner wall surface of the tube, and the contaminants multiply. There is a problem that contaminants contaminate the entire inner wall of the tube.

Thus, in order to overcome the above-described problems, Korean Patent Application No. 193-0020865 discloses a master batch by mixing / extruding EVA (Ethylene Vinyl Acetate), PF (Polyethylene), and an antimicrobial agent. Disclosed is a manufacturing method of a washing machine drainage hose extruded after mixing with a resin, which is a main raw material. According to the material of the fabric, a steel or monofilament yarn is inserted into the connection portion which is heat-sealed or glued to form a hose, and according to the structure of the manufactured hose, the fabric and thermal insulation, insulation, part of the surface or the whole of the hose Selectively, the antimicrobial agent, deodorant, antifungal agent, adsorption and disintegrating agent are mixed with one or at least two kinds of paints. A hose having been applied and dried using a known liquid spray composition using a known spray spraying method, dip coating method, roll coating method and the like is disclosed.

The present invention has been made to overcome the above problems, there is a technical problem to provide a silicone tube containing an antimicrobial material.

In addition, the present invention has a technical problem to provide a method for producing a silicone tube by extruding a resin composition mixed with an antimicrobial substance.

The present invention provides a silicone tube comprising 0.001 to 5 percent by weight of antimicrobial material per weight of the total silicone tube.

Here, the silicon tube according to the present invention provides a path for moving a fluid such as gas or liquid into the inside thereof, and may be used as long as the material is made of silicon.

If necessary, the silicon tube according to the present invention may form a surface coating layer on the outer peripheral surface of the silicon tube.

The antimicrobial material according to the present invention is a material having an antibacterial and / or fungal function, and any antimicrobial and / or fungal function may be used, but in the present invention, CAS (Chemical Abstracts Service) and EPA ( 2-Pyridiothiol-1-oxide sodium salt, N, N-dimethyl-N'-phenyl- (N'-fluoro) among the chemicals registered with the Environmental Protection Agency -Dichloromethyl-thiol) -sulfoamide (N, N-dimethyl-N'-phenyl- (N'-fluoro-dichloromethyl-thio) -sulfoamide), dioodomethyl-P-tolyl Sulfone ), Isopropylmethylphenol, methylisothiazolinone, or methyldibromo glutaronitrile may be used alone or in combination of two or more thereof. Metals such as copper, zinc and oxides thereof, silver zeola Natural antibacterial agents such as metal complexes, mustard and cypress, and organic compounds such as thiobendazole, bisphenol, and quaternary ammonium salts, etc. may be used alone or in combination of two or more thereof. %, Preferably 0.01 to 2% by weight.

In particular, when using only metals such as silver, copper, zinc, etc. as an antimicrobial agent, it should be included at least 0.001% by weight per weight of the total silicon tube.

On the other hand, when only the metal such as silver is used as an antimicrobial agent, the silver present in the silicon tube is oxidized to affect the aesthetics of the silicon tube, so as to reduce the effect of the silicon tube due to the oxidation of the silver zeolite as an antimicrobial agent It is preferable to use a metal complex such as an oxide or an oxide of a metal.

Here, when the antimicrobial material exceeds 5% by weight of the total silicon tube, the physical properties required as the silicon tube, for example, strength, tensile strength, etc. is reduced, when the weight is less than 0.001% by weight Antimicrobial activity is reduced.

The method for producing a silicone tube according to the present invention may be any method for manufacturing a silicone tube in general, but preferably, an extruder after mixing a resin chip such as silicone resin powder and an antimicrobial substance with each other. The silicon tube may be manufactured by melting and extruding at 100 to 800 ° C. using a mold compounding machine.

The surface coating layer according to the present invention is to prevent the outer peripheral surface of the silicone tube containing the antimicrobial material is contaminated by adsorption of dust and the like, and to coat the outer peripheral surface of the silicone in order to reduce friction, the coating agent in the art Any coating may be used as long as it is a coating agent that is commonly used, but it is preferable to use mica.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. However, the following description is only for explaining this invention concretely, and does not limit the scope of the present invention by the following description.

BRIEF DESCRIPTION OF THE DRAWINGS The block diagram which shows the aspect of the silicone tube which concerns on this invention, FIG. 2 demonstrates together as sectional drawing of the silicone tube which concerns on this invention.

As shown in FIGS. 1 to 2, the silicone tube 2 including the antimicrobial material 4 according to the present invention includes the antimicrobial material 4 inside the silicone tube 2.

Thus, the silicone tube 2 including the antimicrobial material 4 according to the present invention will be described.

First, 0.001 to 5% by weight of the antimicrobial substance (4) per weight of the total resin composition is mixed with silicone to prepare a silicone resin composition including the antimicrobial substance (4).

Here, the silicone resin composition containing the antimicrobial substance 4 may be added with a curing agent, stabilizer, accelerator, catalyst, pigment and the like as needed.

Then, the silicone resin composition containing the antimicrobial material 4 is extruded with an extruder to produce a silicone tube 2 including the antimicrobial material 4.

On the other hand, the silicone tube according to the present invention may be coated on the outer circumferential surface of the prepared silicone tube 2 with a spray coater to form a surface coating layer to finally manufacture the silicone tube (2).

Here, the surface coating layer 6 coated on the outer circumferential surface of the silicon tube 2 prevents the outer circumferential surface of the silicon tube 2 including the antimicrobial material 4 from being contaminated by adsorption of dust and the like, and reduces frictional force. In order to coat the coating agent, the coating agent may be used as long as it is a coating agent commonly used in the art, but it is preferable to use a mica.

On the other hand, as an example of a method for producing a silicon tube according to the present invention there is a method of extrusion molding by using an extruder using a pellet-type resin chip, such as a resin chip (chip) such as silicone resin powder and antimicrobial material After mixing with each other, the silicon tube 2 can be manufactured by melt-extruding at 100-800 degreeC using an extruder type compounding machine.

In this case, the resin chip in the pellet form may be any resin chip as long as it is a resin chip manufactured by a method commonly used in the art.

Hereinafter, the present invention will be described in detail through examples. However, the following examples are only for illustrating the present invention in detail and are not intended to limit the scope of the present invention by these examples.

<Example 1>

After mixing 1 kg of a silicone resin [Dongsil Silicone, Korea] and 10 g of a silver zeolite [Asung Platech, Korea] per weight of the total resin composition, about 600 ° C. was melted at a temperature.

Thereafter, a small amount of platinum was mixed into the mixture as an accelerator to mature the mixture.

The aged mixture was then incorporated into an extruder and extruded at 400 ° C. to produce a silicone tube.

<Example 2>

The surface of the silicon tube prepared according to Example 1 was coated with mica [Wangpyo Chemical, Korea] as a coating to form a surface coating layer of about 6㎛ thickness.

Experimental Example 1

The silicone tube containing the antimicrobial material prepared according to Example 1 was commissioned by the Korea Testing and Research Institute (FITI) according to the film adhesion method [(FC-TM-20) -2003]. Was tested.

The result was shown in Table 1, FIG. 3, and FIG.

Antimicrobial Test Results Strain Initial cell weight Cell weight after 24 hours % Reduction Staphylococcus aureus ATCC 6538 Control specimen 1.2 × 10 ⁵ Control specimen 5.5 × 10 ⁶ - Test piece 1.2 × 10 ⁵ Test piece <10 99.9 Escherichia coli ATCC 25922 Control specimen 1.6 × 10 ⁵ Control specimen 6.9 × 10 ⁶ - Test piece 1.6 × 10 ⁵ Test piece <10 99.9

As shown in Table 1, FIG. 3 and FIG. 4, the reduction rate of the cell mass at 24 hours after inoculating the control specimen and the test specimen was 99.9% for each strain Staphylococcus aureus ATCC 6538 and EScherichia coli ATCC 25922 . .

Experimental Example 2

The silicone tube containing the antimicrobial material prepared in Example 1 was commissioned by KIFA to test the antimicrobial activity according to the experimental method KFIA-FI-1003.

The results are shown in Table 2, FIG. 5 and FIG.

Antimicrobial Test Results Strain Initial cell weight Cell weight after 24 hours % Reduction Escherichia coli ATCC 25922 Control specimen 2.1 × 10 ⁵ Control specimen 4.5 × 10 ⁵ - Test piece 2.1 × 10 ⁵ Test piece 1.2 × 10 ⁴ 97.3 Pseudomonas aeruginosa ATCC 15442 Control specimen 2.1 × 10 ⁵ Control specimen 5.1 × 10 ⁶ - Test piece 2,1 × 10 ⁵ Test piece 1.7 × 10 ⁵ 96.7

As shown in Table 2, Figure 5 and Figure 6, 24 hours after the inoculation of the strain in the control specimens and test specimens, the reduction rate of the cell mass was 97.3% for Escherichia coli ( EScherichia coli ATCC 25922 ), Pseudomonas aeruginosa ATCC 15442) was 196.7 %.

Comparative Experiment

The silicone tube according to Example 1, which does not contain an antimicrobial substance, was commissioned by the FIT Testing and Research Institute (FITI) to test the antimicrobial activity according to the film adhesion method [(FC-TM-20) -2003]. It was.

The results are shown in Table 3.

Antimicrobial Test Results Strain Initial cell weight Cell weight after 24 hours % Reduction Staphylococcus aureus ATCC 6538 Control specimen 1.2 × 10 ⁵ Control specimen 5.5 × 10 ⁶ - Test piece 1.2 × 10 ⁵ Test piece 4.1 × 10 ⁶ 26.1 Escherichia coli ATCC 25922 Control specimen 1.6 × 10 ⁵ Control specimen 6.9 × 10 ⁶ - Test piece 1.6 × 10 ⁵ Test piece 5.8 × 10 ⁶ 15.3

As shown in Table 3, the reduction rate of the cell mass was 24 hours after the inoculation of the strain to the control specimen and test specimen in the case of strain Staphylococcus aureus ATCC 6538 26.1%, and 15.3% for Escherichia coli ATCC 25922 .

As described above, those skilled in the art will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not as restrictive. The scope of the present invention should be construed that all changes or modifications derived from the meaning and scope of the appended claims and their equivalents, rather than the detailed description, are included in the scope of the present invention.

The silicone tube including the antimicrobial material according to the present invention not only removes contaminants such as bacteria and fungi present in the fluid flowing therein, but also contaminates the inner wall surface of the silicone tube due to such contaminants. There is an effect that can be prevented.

Claims (4)

Silicone tube comprising 0.001 to 5% by weight of antimicrobial substance per weight of total silicone tube. The method of claim 1, Silicon tube comprising a surface coating layer is coated on the outer peripheral surface of the silicon tube. The method of claim 2, Silicon tube, characterized in that the surface coating layer made of mica. The method of claim 1, The antimicrobial materials include metals such as silver, copper and zinc, oxides thereof, metal complexes such as silver zeolites, natural antibacterial agents such as mustard and cypress, and organic substances such as thiobendazole, bisphenol, and quaternary ammonium salts, and 2-pyridiothiol- 1-oxide sodium salt, N, N-dimethyl-N'-phenyl- (N'-fluoro-dichloromethyl-thiol) -sulfomide, diodomethyl-P-tolyl sulfone, isopropylmethylphenol, methylisosia Silicone tube, characterized in that it is zolinone, methyldibromo glutaronitrile or a mixture thereof.

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