KR20010049811A - Anti-bacterial cleaner and method for producing same - Google Patents

Abstract

PURPOSE: An antibacterial scrubbing brush and the manufacturing method is provided, which has a large contact area, an antibiosis, and a high appetence for a detergent. CONSTITUTION: A step is to mix the water-soluble resin, the antibiotics, and a foaming agent and to manufacture the resin composition. A step is to form the bubble-shaped resin composition by blowing the air into the resin composition. A step is to maintain the bubble condition and to coat the surface of a woven fabric with the bubble-shaped resin composition. A step is to heat and dry the woven fabric with the bubble-shaped resin composition in the temperature range of 90°C -170°C to raise the temperature by stages.

Description

Antibacterial scrubber and its manufacturing method {ANTI-BACTERIAL CLEANER AND METHOD FOR PRODUCING SAME}

[Industrial use]

The present invention relates to an antibacterial scrubber and a method for producing the same, and more particularly, to an antibacterial scrubber and a method for producing the same that do not cause environmental pollution and can be used for a long time.

[Prior art]

With the development of kitchen culture, kitchen containers are changing from steel products such as stainless steel to tableware with surface coating such as corning wear, glass, bone china, or enamel. High quality and high performance are inevitably required to be consistent.

Conventional scrubbers are produced by impregnating a non-woven fabric made of polyester or nylon into a phenolic resin, and causing problems of environmental pollution by wastewater discharge during the manufacturing process and secondary contamination by phenolic resin remaining in the scrubber after processing. There was this. In addition, such a conventional scrubber has a low affinity between the surface of the nonwoven fabric and the detergent, so that the detergent is easily washed away, so the waste of the detergent is severe, and the adhesion between the nonwoven fibers is low, so that entanglement between fibers and the occurrence of fluffs are generated during the use of such a scrubber. And there was a problem that can be used only for a short period of time due to the phenomenon of rupture of the side.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an antibacterial scrubber having excellent affinity with a detergent and antibacterial without causing environmental pollution.

Another object of the present invention is to provide an antibacterial scrubber that can be used for a long time.

Another object of the present invention to provide a method for producing the antibacterial scrubber.

1A is a 50x scanning electron micrograph of an antibacterial scrubber prepared according to Example 1 of the present invention.

1b is a 200x scanning electron micrograph of an antibacterial scrubber prepared according to Example 1 of the present invention.

Figure 2a is a 50x scanning electron micrograph of the antibacterial scrubber prepared according to Example 2 of the present invention.

Figure 2b is a 200x magnification scanning electron micrograph of an antibacterial scrubber prepared according to Example 2 of the present invention.

Figure 3a is a 50x scanning electron micrograph of the antibacterial scrubber prepared according to Comparative Example 1 of the present invention.

Figure 3b is a 200x scanning electron micrograph of the antibacterial scrubber prepared according to Comparative Example 1 of the present invention.

Figure 4a is a 50x magnification scanning electron micrograph of the antibacterial scrubber prepared according to Comparative Example 2 of the present invention.

Figure 4b is a 200x magnification scanning electron micrograph of the antibacterial scrubber prepared according to Comparative Example 2 of the present invention.

In order to achieve the above object, the present invention provides an antibacterial scrubber comprising a nonwoven fabric coated with a resin composition comprising a water-soluble resin, an antimicrobial agent, a blowing agent in a foam state.

The present invention also comprises the steps of preparing a resin composition by mixing a water-soluble resin, an antimicrobial agent and a blowing agent; Blowing air to the resin composition to form a foamy resin composition; Coating the surface of the nonwoven fabric with the foamable resin composition while maintaining the foam state; And it provides a method for producing an antimicrobial scrubber comprising the step of heating the nonwoven fabric with the foamed resin composition so as to increase the temperature step by step in a temperature range of 90 to 170 ℃.

Hereinafter, the present invention will be described in more detail.

After the active treatment of the surface of the porous nonwoven fabric, the present inventors confirmed that the present invention can manufacture a new concept of scrubber that enhances the antimicrobial activity while increasing the affinity with detergent by foam coating the water-soluble resin with the antibacterial agent on the nonwoven fabric. Was completed.

The antibacterial scrubber of this invention is comprised from the nonwoven fabric by which the resin composition is coated in the foam state on the surface.

The resin composition includes a water-soluble resin, an antibacterial agent and a blowing agent.

As the water-soluble resin, in general, any resin that can be dissolved or dispersed in water may be used. Examples thereof include acrylic acid resins, urethane resins, polyether resins such as polyphenylene sulfide, polytetrafluoroethylene resins, and silicones. One or more resins, styrene-butadiene rubber (SBR) or acrylonitrile-butadiene rubber (NBR) may be mixed and used. Preferably, the water-soluble resin necessarily includes styrene-butadiene rubber or acrylonitrile-butadiene rubber, and in addition, polyether resin such as acrylic acid resin, urethane resin, polyphenylene sulfide, polytetrafluoroethylene resin or silicone resin It includes. The resin composition of the present invention contains 60 to 95% by weight, preferably 70 to 80% by weight of the water-soluble resin. When the content of the water-soluble resin is less than 60% by weight, there is a problem in that the adhesive strength between the resin and the nonwoven fabric is inferior, and when the content of the water-soluble resin is greater than 95% by weight, the final loofah is too hard and the texture is poor.

The antimicrobial agent mainly provides antimicrobial activity to a scrubber that maintains a wet state, thereby removing a cause such as occurrence of odor from the scrubber and maintaining a clean hygiene state. As the antimicrobial agent, any inorganic or organic water-soluble antimicrobial agent can be used as long as it is harmless to the human body. As a representative example of the inorganic antimicrobial agent, a silver-coated zeolite may be used. As a representative example of the organic water-soluble antimicrobial agent, a quaternary ammonium-based compound such as a quaternary ammonium cation compound may be used. The amount of the antimicrobial agent included in the resin composition is 0.1 to 5% by weight, preferably 2 to 3% by weight, when the amount of the antimicrobial agent is less than 0.1% by weight, the antimicrobial activity is insignificant, and 5% by weight may provide sufficient antimicrobial activity. And, even more than 5% by weight can no longer be obtained antibacterial effect.

The blowing agent included in the resin composition of the present invention serves to form bubbles, that is, bubbles in the resin composition. In general, any foaming agent can form bubbles in the resin composition, and representative examples thereof include alkyl sulfone oxides or stearic acid gums. The content of the blowing agent contained in the resin composition of the present invention is 0.5 to 5% by weight, preferably 1 to 3% by weight, when the content of the blowing agent is less than 0.5% by weight, there is a problem in foam formation, exceeding 5% by weight In this case, there is a problem of weakening the resin curing.

The resin composition of the present invention may further include one or more acrylic thickeners, foam stabilizers, surfactants, inorganic fillers or crosslinking agents in addition to the three main components.

The acrylic thickener serves to adhere the foamed resin composition to the surface of the nonwoven fabric well, and a material usable as the acrylic thickener is well known in the art, and representative examples thereof include an acrylic copolymer thickener. The usage-amount of an acryl-type thickener is 0.1-5 weight part with respect to 100 weight part of total resin compositions. When the amount of the thickener is less than 0.1 part by weight, there is a problem in increasing the viscosity, and when it exceeds 5 parts by weight, there is a problem in forming the resin foam.

The foam stabilizer used in the present invention is a material that serves to maintain a constant bubble size formed, and materials that can be used as foam stabilizers are already well known in the art, and representative examples thereof may include fluorine resin or silicone oil. The amount of the foam stabilizer is preferably 0.5 to 5 parts by weight based on 100 parts by weight of the total resin composition, when less than 0.5 parts by weight, there is a problem that the uniformity of the foam is inferior, when the amount exceeds 5 parts by weight of foam stability There is a problem falling.

The resin composition of the present invention may further include a surfactant that acts with a blowing agent to make bubbles well generated, and maintains the generated bubbles, and any surfactant having such physical properties may be used, Representative examples thereof include ammonium lauryl sulfate. The amount of the surfactant is preferably used in an amount of 0.1 to 2 parts by weight based on 100 parts by weight of the total resin composition. When the amount of the surfactant is less than 0.1 parts by weight, there is a problem in foam formation. have.

The inorganic filler serves to enhance mechanical properties, and representative examples thereof may include Al (OH ₃ ), silica or talc. The amount of the inorganic filler used is preferably 8 to 20 parts by weight based on 100 parts by weight of the total resin composition, if less than 8 parts by weight has a problem in terms of viscosity, if it exceeds 20 parts by weight there is a problem in the stability of the foam have.

The crosslinking agent is a substance which serves to cure the foam resin composition, and any compound having such physical properties may be used, and a representative example thereof may include a melamine resin. The amount of the crosslinking agent is preferably used in an amount of 0.2 to 2 parts by weight based on 100 parts by weight of the total resin composition. When the amount of the crosslinking agent is less than 0.2 parts by weight, there is a problem that the resin is not cured. There is a problem.

In order to manufacture the antibacterial scrubber of this invention using the resin composition of such a structure, air is blown to a resin composition, and a foamy resin composition is manufactured. At this time, the supply rate of the blown air is an important factor that can control the size and amount of bubbles, preferably air is supplied at a rate of 1 to 3L / min. If the air supply rate is less than 1 l / min, there is a problem that the amount of foam is relatively reduced, and if it exceeds 3 l / min, the size of the resulting foam is too large, which is not preferable. Mixing at 300 to 500 rpm while blowing air into the resin composition is preferable because it can better form bubbles in the resin composition. In addition, it is preferable to maintain the foam stability by adjusting the blow rate (blow rate) 2: 1 to 5: 1. The air blowing process may be any method as long as it can blow air into the resin composition, for example, it can be carried out using a bubble generator.

The surface of the nonwoven fabric is coated with the foamed resin composition. The foam formed in the resin composition in the coating process is maintained so that the resin composition is coated on the surface of the nonwoven fabric in the form of a foam having a network structure. The nonwoven fabric may be a general nonwoven fabric, but it is preferable to use a plasma treatment, a corona treatment, or an ion beam treatment to increase the bonding force between the nonwoven fabric and the aqueous component by activating the fiber surface constituting the nonwoven fabric. Plasma treatment of the nonwoven fabric is generally known by any method of plasma treatment. For example, a nonwoven fabric is introduced into a facility having a plasma generator and a plasma is generated so that the surface of the nonwoven fabric is exposed to the plasma. Corona treatment or ion beam treatment of nonwovens can also be carried out using common processes well known in the art.

The coating thickness of the foamed resin composition is preferably 0.1 to 3 mm, when the thickness is less than 0.1 mm, there is a problem of uniformity of the coating, and when it exceeds 3 mm, there is a problem in that the economy is poor. The coating process may be any method for coating the surface of the nonwoven fabric with the resin composition while maintaining a foam state, for example, can be carried out using a foam coating machine. When a foam coater is used, the foam resin composition is coated on the surface of the nonwoven fabric by a spray nozzle through the screw of the foam coater. At this time, the rotation speed of the screw is preferably adjusted to 20 to 100rpm, the spray nozzle is preferably adjusted to be sprayed at a speed of 4.5 to 15m / min.

Subsequently, the nonwoven fabric coated with the foamed resin composition is heated to dry stepwise in a temperature range of 90 to 170 ° C. When heated and dried in such a manner as to increase the temperature step by step, the open cell of the resin foam net formed between the nonwoven fibers can be maintained as it is preferable. According to this process, the foamed resin composition coated on the surface of the nonwoven fabric is dried and cured and solidified as it is, forming a foamed resin layer on the surface of the nonwoven fabric. A plurality of uniform pores are formed in the foamed resin layer. Formed.

Hereinafter, preferred examples and comparative examples of the present invention are described. However, the following examples are only one preferred embodiment of the present invention and the present invention is not limited to the following examples.

(Example 1)

3% by weight of water-soluble resin and stearic acid saponified foaming agent, a mixture of 32.5% by weight of acrylic resin emulsion, 32.5% by weight of urethane resin emulsion, and 25% by weight of acrylonitrile butadiene rubber emulsion, 2% by weight of quaternary ammonium cationic organic water-soluble antibacterial agent, acrylic A resin composition emulsion was prepared by uniformly mixing 2% by weight of a copolymer thickener, 1% by weight of a silicone oil foam stabilizer, 1.2% by weight of ammonium lauryl sulfate surfactant, and 0.8% of a melamine resin crosslinker.

The prepared resin composition emulsion was poured into a conventional bubble generator, mixed at 400 rpm with a bubble rate of 3: 1 while supplying air to the bubble generator at a rate of 2 l / min, and foaming at a blow rate of 3: 1. A resin composition was prepared. The obtained foamed resin composition was supplied to a foam coater having a conventional screw, and the foamed resin composition was sprayed onto the surface of the nonwoven fabric with a spray nozzle while adjusting the rotational speed of the skew to 40 rpm. At this time, a nonwoven fabric having a thickness of 1 mm and an area of 470 g / m 2, and plasma-treated nonwoven fabric (polyester, nylon material) was used.

The nonwoven fabric coated with the foamed resin composition was put in a preheated drying furnace, heated to be gradually heated up within a temperature range of ___ ° C., and the foamed resin composition was dried to prepare an antibacterial scrubber.

(Example 2)

An antibacterial scrubber was prepared in the same manner as in Example 1, except that styrene-butadiene rubber was used instead of acrylonitrile butadiene rubber.

Commercially available polyester nonwoven fabric scrubber (3M company) was made into Comparative Example 1, and nylon nonwoven fabric scrubber (Clorox company) was made into Comparative Example 2.

Scanning electron micrographs of the scrubber prepared by the method of Example 1-2 and Comparative Example 1-2 are shown in Figs. 1A-B to 4A-B, respectively. 1A, 2A, 3A, and 4A are 50 magnifications, and FIGS. 1B, 2B, 3B, and 4B are 200 magnification photographs. As shown in FIGS. 1A-B and 2A-B, the scrubbers of Examples 1 and 2 show that a number of fine pores are formed in the resin layer between the nonwoven fibers to form a honeycomb structure (honeycomb shape), which is a three-dimensional network structure. And a well developed pore layer of 10-50 μm.

On the contrary, the scrubber of Comparative Example 1 (Fig. 3a-b) can be seen that the rough surface of the resin coated with the abrasive stone in the form of the resin is simply coated on the surface of the nonwoven fabric. In addition, the scrubber (FIG. 4A-B) of the comparative example 2 shows the structure where resin was aggregated in several places, and is formed with the coarse and smooth nonwoven fabric rather than the comparative example 1.

As such, the scouring pads of Examples 1 to 2 have a lot of fine pores, so that the moisture content is high, and the detergents can be significantly saved because the detergents can be retained between the fine pores. In addition, since it is coated with a water-soluble resin, it is considered that the affinity with the detergent is very excellent.

In addition, the specific surface area, tensile strength, elongation, compressive elastic recovery rate, friction fastness and wash fastness of the loofah prepared by the method of Example 1-2 and Comparative Example 1-2 were measured by the following method.

1) specific surface area

While injecting a certain amount of liquefied nitrogen into the scrubber, the specific surface area and pore distribution of the scrubber according to the pressure change were measured using a BET (Brunauer, Emmett and Teller) apparatus, and the results are shown in Table 1 below.

Specific surface area [㎡ / g] Example 1 12.22 Example 2 2.14 Comparative Example 1 0.10 Comparative Example 2 0.19

As shown in Table 1, it can be seen that the scrubbers of Examples 1 to 2 in which the micropores developed were very large, and the scrubbers of Comparative Examples 1 and 2 had no specific surface area due to the micropores or were negligible. .

2) Tensile strength and elongation measurement

Tensile strength refers to the force of resistance to pulling, and elongation is increased by% when pulled. Tensile strength and elongation were measured using a KSK 0520 method using a tensile strength tester (Instron), and a scrubber having a size of 5 × 15 cm was measured by a cut strip method.

Tensile Strength [kg] Elongation [%] Example 1 49.1 39.5 Example 2 41.7 38.4 Comparative Example 1 29.7 39.5 Comparative Example 2 18.8 38.9

As shown in Table 2, the scrubbers of Examples 1 and 2 are similar to the scrubbers of Comparative Examples 1 and 2 but the tensile strength is very large.

3) Compression elastic recovery rate

Compression elastic recovery rate refers to the property of returning to the original state from distortion state such as warping and wrinkles, and the compression recovery rate by applying 500g / cm 2 to the scrubber using the Kawabata system compression evaluation , The initial compression characteristics, the compression energy was measured and the results are shown in Table 2 below.

Compression Recovery Rate (RC) Initial Compression Characteristics (LC) Compressed Energy (WC) Example 1 43.28 0.67 84 Example 2 37.37 0.70 65 Comparative Example 1 34.94 0.51 78 Comparative Example 2 41.54 0.47 95

RC: The bigger the better the recovery

LC: Larger, harder initial compression

WC: The bigger the better the compression

As shown in Table 3 above, the scrubber of Example 1 was observed to have the best compression recovery rate, and all scrubbers were found to meet the criteria.

4) Friction and washing fastness

Friction fastness: As an indicator of friction between the fiber and the fiber by friction, using a Crock meter (Atlas friction machine) by rubbing the loofah with KSK 0650 method 5 times with each fiber shown in Table 4 by 10 cm. Measured. When color fastness was 4 or more, it was judged that there was no abnormality as a product.

Washing fastness: indicator of the binding strength between dyes and fibers by washing, washing with neutral soap using a laundry-o-meter at 40 ° C for 30 minutes using the KSK 0430 method, and the degree of multi-fiber contamination in the laundry-o-meter. Measured. Color fastness When water supply is 4 or more, it judged that there was no abnormality as a product.

Color fastness Friction fastness Change acetate if nylon PET acryl fence deflation Wet Example 1 5 5 5 5 5 5 4 to 5 - 4 Example 2 5 5 5 5 5 5 4 to 5 - 4 Comparative Example 1 4 5 5 5 5 5 5 - 2 Comparative Example 2 5 5 5 5 5 5 4 to 5 - 4 to 5

In the case of washing fastness, the scrubbers of Example 1-2 and Comparative Example 1-2 were all measured at suitable levels. The fastness to rubbing was measured by the fact that the dye is released by friction less than the scrubber of Comparative Example 1, it can be seen that all other scrubbers meet the criteria.

As shown in Tables 1 to 4, the loofah of Examples 1 to 2 was found to be the best in all physical property experiments such as tensile strength, compressive elastic recovery rate, friction fastness, washing fastness, etc., even though a soft texture of acrylic material was prepared. . In particular, the loofah of the present invention was shown to have a high friction fastness even in the absence of abrasive stone. The loofah of Comparative Example 1 is a polyester material, the tensile strength and friction fastness was lower than other nylon loofah, it can be seen that the resin coating state is also the worst.

As mentioned above, the antimicrobial scrubber of the present invention has a good contact surface area with detergent, has antimicrobial properties due to the presence of the antimicrobial agent, and is particularly coated with aqueous resins to have a very high affinity with the detergent.

Claims (12)

An antibacterial scrubber comprising a nonwoven fabric coated with a resin composition comprising a water-soluble resin, an antimicrobial agent, and a foaming agent. The antimicrobial scrubber according to claim 1, wherein the resin composition further comprises at least one material selected from the group consisting of an acrylic thickener, a foam stabilizer, a surfactant, an inorganic filler, and a crosslinking agent. The antimicrobial scrubber according to claim 1, wherein the nonwoven fabric is plasma treated, corona treated or ion beam treated. The antimicrobial scrubber according to claim 1, wherein the resin composition comprises a water-soluble resin in an amount of 60 to 95% by weight. The antimicrobial scrubber according to claim 1, wherein the resin composition comprises an antimicrobial agent in an amount of 0.1 to 5% by weight. The antimicrobial scrubber according to claim 1, wherein the resin composition comprises a blowing agent in an amount of 0.5 to 5% by weight. The antibacterial scrubber according to claim 1, wherein the water-soluble resin is selected from the group consisting of acrylic resins, urethane resins, polytetrafluoroethylene resins, styrene-butadiene rubbers, acrylonitrile-butadiene rubbers and silicone resins. Preparing a resin composition by mixing a water-soluble resin, an antibacterial agent and a blowing agent; Blowing air to the resin composition to form a foamy resin composition; Coating the surface of the nonwoven fabric with the foamable resin composition while maintaining the foam state; And Heating and drying the nonwoven fabric with the foamable resin composition so as to be gradually heated in a temperature range of 90 to 170 ° C; Method for producing an antibacterial scrubber comprising a. The method of claim 8, wherein the preparing of the foamy resin composition is performed by blowing air into the resin composition at a feed rate of 1 to 3 liters / minute. The method of claim 8, wherein the coating is performed such that the foamed resin composition is laminated on the surface of the nonwoven fabric to a thickness of 0.1 to 3 mm. The method of claim 8, wherein the resin composition further comprises one or more materials selected from the group consisting of acrylic thickeners, foam stabilizers, surfactants, inorganic fillers and crosslinking agents. The method of claim 8, wherein the nonwoven is plasma treated, corona treated or ion beam treated.