KR20110014001A - Antibacterial and antifungal plastic, its product and its manufacturing method - Google Patents

Abstract

PURPOSE: Plastics are provided to secure input element reduction, fabricating process reduction, and defective reduction by suppressing the growing of mold and bacteria without addition of incidental additives(dispersing agent and thermal stabilizer). CONSTITUTION: A method for preparing plastics comprises the steps of: mixing 1~10 parts by weight of triclosan with 100.0 parts by weight of base resin to prepare a mixture; blending the mixture with heating; extruding the molten mixture; cooling, drying, and cutting the extruded mixture to prepare master batch chips; adding 1~10 parts by weight master of batch chips to 100.0 parts by weight of a new base resin identical to the used base resin.

Description

Antibacterial and antifungal plastics, products using same and manufacturing method thereof {Antibacterial and antifungal plastic, its product and its manufacturing method}

The present invention relates to a plastic having antimicrobial and antifungal properties, and in particular, the antimicrobial and antifungal agents are dispersed in the base resin in the best state without the addition of ancillary additives such as dispersants or heat stabilizers, and thus are input elements in the manufacturing process. The present invention relates to a plastic having an antimicrobial and antifungal property, which can be expressed over a long period of time, while maintaining high productivity, such as reduction, process shortening, and defect rate reduction, and a product using the same and a method of manufacturing the same.

Plastic products, one of mankind's most used materials in the 20th century, are easily in contact with microorganisms such as bacteria and fungi, and the appearance of raw materials and products when exposed to environmental conditions such as temperature and humidity suitable for growth of these microorganisms. Changes, pollution, deterioration, odors, etc. can occur, and it can cause secondary pollution that has a harmful effect on the human body, such as allergy. To prevent this problem, raw materials or products given antimicrobial activity are being developed one after another.

In Korea, antimicrobial products were developed in earnest from the late 1990s. In the early 2000s, we developed zeolite-based inorganic antimicrobial agents.In the 2000s, silver nano products appeared due to the commercialization of nanotechnology. Combined with the iconic “well-being culture,” it had a lot of repercussions for consumers.

1 is a flow chart of the production of liquid silver nano colloidal antimicrobial plastics, the liquid silver nano colloidal antimicrobial agent is mixed in the base resin, and then a large amount of dispersion stabilizer is added to disperse the process, and FIG. 2 is a powder zeolite-based antimicrobial plastic. As a production flowchart, a powder zeolite-based antimicrobial agent is mixed with a base resin, and a large amount of a dispersion stabilizer and a thermal stabilizer are further added to the process.

However, since the conventional zeolite inorganic antimicrobial has a large amount of dispersant for dispersing and dispersing it in powder form, discoloration problem occurs due to excessive input, so there is a problem of dispersibility and discoloration such as additional heat stabilizer. Even in the case of antimicrobial products using liquid silver nano, due to the high price of silver nano, it was inevitable to add a small amount of antimicrobial agent, and due to the non-uniform antimicrobial performance of the product, it lowered the reliability of consumers and also due to the transparency problem, It was hard to use.

Furthermore, as in the case of the biofilm that has recently occurred in some home appliances, a large amount of microorganisms are fixed to the plastic itself through the growing process, which causes many difficulties in identifying and removing the causes of pollution. In particular, the microorganisms that make up this were found to be diverse, ranging from bacteria to fungi. The problem is that in the case of antimicrobial agents that have been used in plastics in the past, mainly the ability to suppress bacterial contamination, the ability to suppress the fungi that occur during long-term use is significantly reduced, so that the bacteria that inhabit the plastic through conventional antimicrobial agents There was a limit to inhibiting the growth of mold at the same time.

In the past, attempts have been made to add antimicrobial agents to plastics in order to give them antimicrobial properties. The antibacterial agent used here must have ① heat stability (heat resistance) due to its characteristics, and ② discoloration of the plastic resin itself so that no abnormality occurs in the plastic parts combination due to the integrated production of various parts through mass production such as OEM method. It should not be displayed and ③ It should be used by the consumer and apply the product which is harmless to human body. Furthermore, in order to secure the reliability of the antimicrobial performance of the final product, the material exhibiting antimicrobial performance should be uniformly distributed in the plastic.

However, in the case of powdered zeolite that has been used as an antimicrobial agent in the related art, there is a problem of dispersibility and discoloration, and in the case of silver nano, a small amount can be used due to an expensive raw material cost problem and the transparency of the product is deteriorated.

On the other hand, in the case of zeolite or silver nano particles, they exist in the form of particles and exist not only on the surface of the plastic but also on the inside of the plastic. Actually, only the zeolite or silver nano particles on the plastic surface have an antimicrobial effect. There is a problem that the antibacterial effect is less.

In addition, the inorganic materials such as zeolite and silver nano are not uniformly dispersed in the polymer constituting the plastic, and may cause discoloration or yellowing due to aggregation, and there may be no antibacterial activity at all.

Furthermore, since the conventional antimicrobial plastic is merely for the purpose of antibacterial, there was a problem that it is difficult to effectively cope with the fungus generated during long time use.

The present invention has been invented to solve the above problems, the present invention by using an organic antimicrobial agent that can be dispersed in the best state in the plastic while having stability in the processing conditions of the base resin to prevent plastic discoloration to improve the defective rate Antibacterial and antifungal molds that can suppress the growth of germs and molds without adding additional additives (dispersants, heat stabilizers), and ensure high productivity with reduced input factors, process shortening, and defective rate reduction, while also providing antimicrobial activity for a long time It is an object of the present invention to provide a plastic having properties, a product using the same, and a method of manufacturing the same.

Method for producing a plastic having antibacterial and antifungal properties according to the present invention is a mixing step of mixing 1-10 parts by weight of triclosan to perform antibacterial and antifungal parts to 100 parts by weight of the base resin to make a mixture; A kneading step of mixing while applying heat to the mixture so that the base resin is completely dissolved; Extruding the molten mixture through a kneading step; A chip manufacturing step of manufacturing a masterbatch chip by cutting the extruded mixture into cooling, drying, and a constant size; It comprises a product forming step of producing a product by mixing and molding 1 to 10 parts by weight of the master batch chip with respect to 100 parts by weight of a new base resin same as the base resin used in the mixing step.

According to another preferred feature of the present invention, in the mixing step is added to 1 to 5 parts by weight of jintpyrithione to perform the role of antibacterial and anti-fungal relative to 100 parts by weight of the base resin is mixed.

According to another preferred feature of the present invention, the triclosan and zinc pyrithione are dissolved or dispersed in an organic solvent to form a liquid and then subjected to the mixing step.

According to another preferred feature of the invention, the base resin is any of acrylonitrile-butadiene-styrene terpolymer, polyethylene, polypropylene, polycarbonate, polystyrene or polyethylene terephthalic acid.

According to another preferred feature of the invention, the extruder, the mixing step, the kneading step, the extrusion step is a single screw extruder.

Plastic having antimicrobial and antifungal properties according to the present invention is characterized in that it comprises 0.1 to 1.0 parts by weight of triclosan to act as an antibacterial and antifungal against 100 parts by weight of the base resin.

According to another preferred feature of the present invention, the plastic having the antibacterial and antifungal properties is further included 0.1 to 0.5 parts by weight of zinc pyrithione to play the role of antibacterial and antifungal with respect to 100 parts by weight of the base resin.

According to another preferred feature of the invention, the base resin is any of acrylonitrile-butadiene-styrene terpolymer, polyethylene, polypropylene, polycarbonate, polystyrene or polyethylene terephthalic acid.

The product using the plastic having antibacterial and antifungal properties according to the present invention is a product comprising a plastic having antibacterial and antifungal properties produced by the present invention, the product is a washing machine, air conditioner, refrigerator, bidet, humidifier, air It is one of a purifier, an airtight container, and a baby block.

The product using the plastic having antibacterial and antifungal properties according to the present invention comprises a lid and a body part and is a sealed container sealed by a combination of the lid part and the body part, wherein the body part or the lid part is polyethylene, polypropylene, polycarbonate Or 0.1 to 1.0 parts by weight of triclosan and 0.1 to 0.5 parts by weight of zinc pyrithion, which act as an antibacterial and antifungal agent, based on 100 parts by weight of the base resin of polyethylene terephthalic acid. It is characterized by being.

Triclosan and zinc pyrithione used in the present invention have thermal stability even at the processing temperature of the base resin, while having inhibitory ability against bacteria and mold, respectively, there is no problem of thermal decomposition during processing of the base resin, and thus Antibacterial and antifungal properties remain intact.

In addition, since triclosan and zinc pyrithione are insoluble in water, they are not eluted and lost to the surface of the plastic produced by the present invention, so that the antibacterial and antifungal properties can be maintained for a long time.

In the base resin, triclosan and zinc pyrithione have good dispersibility, so there is no need to add a separate dispersion stabilizer or heat stabilizer. If the base resin is transparent, the transparency of the product according to the present invention is excellent. The production cost is reduced due to

Since silver nano or zeolite is in a form in which powder particles are dispersed in a base resin, there is a problem in that an antibacterial effect appears only in a specific part of the base resin, and the antimicrobial effect is not exhibited in other parts, but the antimicrobial agent according to the present invention is dissolved in the base resin as a whole. The base resin itself will have antibacterial and antifungal properties.

In addition, when the triclosan and zinc pyrithione is dissolved or dispersed in an organic solvent to make a liquid, it can have the same effect in a smaller amount than when using a powder.

In addition, since triclosan and zinc pyrithione have good dispersibility, they can be processed with a single screw.

Hereinafter, the configuration and operation of an embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, the following examples are provided to enable those skilled in the art to fully understand the present invention, but the scope of the present invention is not limited by the embodiments described below.

Figure 3 is a flow chart of a method for producing a plastic having antibacterial and antifungal properties according to the present invention. As shown in Figure 3, the method for producing a plastic having antibacterial and antifungal properties according to the present invention includes a mixing step, a kneading step, an extrusion step, a chip manufacturing step, and a product forming step. Each step will be described below.

The mixing step is a step of preparing a mixture by mixing 1 part by weight to 10 parts by weight of triclosan, which plays an antibacterial and antifungal role, based on 100 parts by weight of the base resin.

In the present invention, in order to produce a plastic having antibacterial and antifungal characteristics, it is characterized by mixing triclosan, an organic antimicrobial agent having antibacterial and antifungal characteristics, with a base resin.

The base resin used in the present invention is not particularly limited, but is preferably any of acrylonitrile-butadiene-styrene terpolymer, polyethylene, polypropylene, polycarbonate, polystyrene or polyethylene terephthalic acid. The reason for limiting the base resin used in the present invention is that the present invention uses triclosan because it has a weak side to heat as an organic antimicrobial agent, and if the processing temperature of the base resin is too high, the triclosan may be damaged by heat.

In the mixing of the base resin and triclosan, using less than 1 part by weight of triclosan is a problem in the realization of antimicrobial properties, when using more than 10 parts by weight of triclosan there is a problem in the product production cost increase and physical properties of the product.

On the other hand, in the mixing of triclosan and the base resin, since triclosan is a powder, it is common to put triclosan into a base resin and mix. However, when the powder triclosan is used, it may not be properly mixed with the base resin when a small amount is added, and the powders may be aggregated together, so the excess amount is used, and the triclosan powder may be fixed on the inner wall of the mixer in which the mixing step is performed. There is a side that is difficult to remove the triclosan powder stuck to the inner wall of the mixer.

Therefore, in the present invention, it is preferable that the triclosan powder is not mixed with the base resin directly in the mixing step, but the triclosan is dissolved in an organic solvent and then mixed with the base resin. When triclosan is dissolved in an organic solvent and made into a liquid, and mixed with the base resin, the mixing with the base resin can be made more uniformly than with the powder triclosan. Therefore, the same effect is achieved while using a smaller amount of triclosan than with the powder. Can be obtained.

Plastic having antibacterial and antifungal properties in the present invention may include only triclosan, but preferably further comprises 1 to 5 parts by weight of zinc pyrithione. Triclosan exhibits antibacterial and antifungal properties, but mainly because of its strong antibacterial properties, it is preferable to further contain zinc pyrithione to enhance antifungal properties. When triclosan and zinc pyrithione are used at the same time, triclosan mainly exhibits antibacterial properties, and zinc pyrithione exhibits antifungal properties. If the content of zinc pyrithione is less than 1 part by weight, there is a problem of anti-mildew, and if it exceeds 5 parts by weight, there is a problem in the increase of product production cost and physical properties of the product.

In the case of zinc pyrithione, it is preferable to disperse it in an organic solvent and mix it with a base resin for the same reason as triclosan.

The kneading step is mixing while heating the mixture to the extent that the base resin is completely dissolved. In the kneading step, the base resin is melted by applying heat. Here, the temperature at which the kneading step is performed is determined in consideration of the melting point of the base resin, but is excessively higher than the melting point of the base resin to prevent triclosan from being decomposed by heat. It is preferable not to raise.

The proper processing temperature according to the base resin is as follows.

Type of base resin Proper Processing Temperature (℃) ABS: Acrylonitrile-Butadiene-Styrene Terpolymer (ACRYLONITRILE-BUTADIENE-STYRENE-TERPOLYMER 180-230 PE: Polyethylene (POLYETHYLENE) 150-220 PP: Polypropylene (POLYPROPYLENE) 190-270 PC: POLYCARBONATE 260-310 PS: POLYSTYRENE 180-240 PET: Polyethylene Terephthalic Acid
(POLYETHYLENE TEREPHTHALATE) 230-280

The extrusion step is a step of extruding the molten mixture through a kneading step. Typically, the mixing step, the kneading step, and the extrusion step are performed in an extruder. There is no particular limitation on the extruder used in the present invention, but in the present invention, it is preferable to use a single screw extruder. This is because the triclosan and zinc pyrithione used in the present invention is excellent in dispersibility in the base resin, there is no need to use a dispersant separately, and a single screw extruder having only one screw of the extruder may be used.

The chip manufacturing step is a step of producing a masterbatch chip by cooling, drying and cutting a predetermined size of the extruded mixture.

The product molding step is a step of producing a product by mixing and molding 1 to 10 parts by weight of the master batch chip with respect to 100 parts by weight of the same new base resin as the base resin used in the mixing step. Here, the mixing ratio of the base resin and the master batch chip is determined in consideration of the characteristics of the product, the purpose of use, and the needs of the consumer.If the master batch chip is less than 1 part by weight, the antibacterial and antifungal properties are insufficient. There is a problem with the increase in production cost and the physical characteristics of the product.

It describes a plastic having antibacterial and antifungal properties according to the present invention. Plastics having antimicrobial and antifungal properties according to the invention are produced by the process described above. Plastics having antimicrobial and antifungal properties produced through this process include triclosan or triclosan and zinc pyrithione in the base resin. There is no particular restriction on the mixing ratio, but it is preferable that 0.1 to 1.0 parts by weight of triclosan, which acts as an antibacterial and antifungal agent, is included with respect to 100 parts by weight of the base resin. In addition, 0.1 to 0.5 parts by weight of zinc pyrithione may be further included.

Meanwhile, the content of triclosan and zinc pyrithione is slightly different from each other depending on the type of base resin. The most preferable content ratio is as follows.

Type of base resin Triclosan content (parts by weight) Zinc pyrithione content (parts by weight) ABS: acrylonitrile-butadiene-styrene terpolymer (ACRYLONITRILE-BUTADIENE-STYRENE-TERPOLYMER 0.2-1.0 0.1-0.5 PE: Polyethylene (POLYETHYLENE) 0.1-0.3 0.1-0.2 PP: Polypropylene (POLYPROPYLENE) 0.1-0.3 0.1-0.2 PC: POLYCARBONATE 0.2-0.5 0.1-0.3 PS: POLYSTYRENE 0.2-0.5 0.1-0.3 PET: Polyethylene Terephthalic Acid
(POLYETHYLENE TEREPHTHALATE) 0.2-1.0 0.1-0.5

Note) Parts by weight are based on 100 parts by weight of base resin.

The reason why the content ratio of triclosan and zinc pyrithione is different for each base resin is that physical properties such as density and molding temperature of individual base resins and chemical components are different from each other. If the content of triclosan is low, there is a problem in antimicrobial activity, and if the content of triclosan is high, there is a problem in increasing the production cost and physical properties of the product. When the content of zinc pyrithione is low, there is a problem in antibacterial and antifungal properties, and when the content of zinc pyrithione is high, there is a problem in increasing the production cost and physical properties of the product.

Plastic products having antibacterial and antifungal properties produced using the above-described manufacturing method may be used for various purposes. It can be used in washing machines, air conditioners, refrigerators, bidets, humidifiers, household appliances such as air cleaners, airtight containers, packaging films, automotive interior materials, bathroom accessories, baby blocks, and the like.

In particular, the product produced by the present invention is very excellent in transparency compared to the antibacterial products using the conventional silver nano. Conventional antimicrobial plastics using silver nano have difficulty in producing transparent plastics such as black (black spots) formed at a part when dispersibility is poor, but the plastics produced by the present invention have excellent transparency. Therefore, the plastic having antibacterial and antifungal properties produced by the present invention is excellent in its transparency, so it is easy to directly check the state of an object inside, and thus it is suitable for use as a closed container which is used a lot recently.

4 is a schematic view of a sealed container. As shown in Figure 4, the sealed container consists of a lid portion and the main body portion is sealed by the combination of the lid portion and the body portion is a structure for storing food and the like inside. It is important to check the state of the food stored in the inside of the airtight container because of the characteristics of the product, the airtight container manufactured by using the plastic having antibacterial and antifungal properties according to the present invention and the dispersion stabilizer or thermal stabilizer Since the same additive does not enter, if the base resin is transparent, the airtight container according to the present invention has very good transparency. Therefore, there is an advantage that can check the state of the food stored inside with the naked eye. Since the base resin must be transparent in order to produce such a good transparency product, it is preferable to use any one of polyethylene, polypropylene, polycarbonate or polyethylene terephthalic acid as the base resin.

Therefore, the airtight container includes 0.1 to 1.0 parts by weight of triclosan and 0.1 to 0.5 parts by weight of zinc pyrithione, which acts as an antibacterial and antifungal agent, based on 100 parts by weight of the base resin.

<Examples>

Polypropylene (PP) and polyethylene (PE) used in the examples described below make a master batch chip (M / B) through a mixing step, a kneading step, an extrusion step, and a chip manufacturing step, and again, a product forming step Plastic sheet (SHEET) was prepared through. In this process, the base resin, the added antimicrobial agent (or silver nano, zeolite), the amount of addition and the like were adjusted as necessary to prepare the master batch chip and the plastic sheet described in the following examples.

For silver nano, 2000 ppm M / B and 100 ppm sheet (PP material) and zeolite 10,000 ppm M / B and 500 ppm sheet (PP material) were compared.

In case of bacterial test

1. Antibacterial (Bacterial Blight: mm, AATCC 147)-M / B, sheet

2. Antibacterial activity (Shaking flask method:%, KS J 4206)-sheet

3. Antibacterial activity (Film contact method: log, JIS Z 2801)-sheet

4 parts by weight of triclosan (based on 100 parts by weight of base resin), (M / B), and 2,000 ppm (sheet) were applied to PE and PP.

In the case of mold test,

Triclosan 2,000 ppm (sheet)

2. Trichloric acid 2,000 ppm, zinc pyrithione 1,000 ppm (sheet)

Was used.

Details are as follows.

1. Antimicrobial Test (AATCC 147: Bacterial Low Zone, mm)

   Escherichia coli-Silver Nano 2,000 ppm Staphylococcus aureus-Silver Nano 2,000 ppm

  Escherichia coli-Silver Nano 100 ppm Staphylococcus aureus-Silver Nano 100 ppm

E. coli-Zeolite 10,000 ppm Staphylococcus aureus-Zeolite 10,000 ppm

  E. coli-Zeolite 500 ppm Staphylococcus aureus-Zeolite 500 ppm

E. coli -PE 4 parts by weight (triclosan) Staphylococcus aureus -PE 4 parts by weight (triclosan)

Escherichia coli-PE 2,000 ppm (triclosan) Staphylococcus aureus-PE 2,000 ppm (triclosan)

E. coli -PP 4 parts by weight (triclosan) Staphylococcus aureus -PP 4 parts by weight (triclosan)

Escherichia coli-PP2,000 ppm (Triclosan) Staphylococcus aureus-PP 2,000 ppm (Triclosan)

Test strain
Contents Strain 1: Staphylococcus aureus ATCC 6538 Silver nano Zeolite PE PP Inoculation bacteria concentration (CFU / mL) 4.8 x 10 ⁵ Bacteria low zone (W / ㎜) MB 0 0 12 12 SHEET 0 0 10 10

Test strain
Contents Strain 2: Klebsiella pneumoniae ATCC 4352 Silver nano Zeolite PE PP Inoculation bacteria concentration (CFU / mL) 5.9 x 10 ⁵ Bacteria low zone (W / ㎜) MB 0 0 10 10 SHEET 0 0 8 8

Note) CFU = Colony Forming Unit

Test strain used: Strain 1- Staphylococcus aureus ATCC 6538
Strain 2-Pneumococcal Klebsiella pneumoniae ATCC 4352 W: bacterial low zone (mm)

2. Antibacterial test (KS J 4206: Reduction rate-%)

1) Staphylococcus aureus

        Silver Nano 100 ppm Zeolite 500 ppm

   PE 2,000 ppm (Triclosan) PP 2,000 ppm (Triclosan)

2) Escherichia coli

       Silver Nano 100 ppm Zeolite 500 ppm

   PE 2,000 ppm (Triclosan) PP 2,000 ppm (Triclosan)

Test strain
Contents Strain 1: Staphylococcus aureus ATCC 6538 Silver nano Zeolite PE PP Inoculation bacteria concentration (CFU / mL) 1.8 x 10 ⁵ Growth rate (F) 45 times M _a 1.8 x 10 ⁵ M _b 8.1 x 10 ⁶ M _c 6.2 x 10 ⁶ 5.6 x 10 ⁶ <10 <10 Reduction rate (% by weight) 23.4 30.5 99.9 99.9

Test strain
Contents Strain 2: Escherichia coli ATCC 25922 Silver nano Zeolite PE PP Inoculation bacteria concentration (CFU / mL) 1.6 x 10 ⁵ Growth rate (F) 51 times M _a 1.6 x 10 ⁵ M _b 8.2 x 10 ⁶ M _c 6.5 x 10 ⁶ 6.3 x 10 ⁶ <10 <10 Reduction rate (% by weight) 20.4 23.6 99.9 99.9

Note) <: less than

    CFU: Colony Forming Unit

Test strain used: Strain 1 Staphylococcus- Staphylococcus aureus ATCC 6538
Strain 2 Escherichia coli- Escherichia coli ATCC 25922 Test condition: Test bacteria after shaking culture for 24 hours at 37 ± 1 ℃ (number of shaking 120 times / min) Test sample weight: 5.0 g Neutralization solution: Phosphate buffer solution (pH 7.0 ± 0.2) Reduction ratio (% by weight): [(M _b -M _c ) / M _b ] × 100 Growth rate (F): M _b / M _a (31.6 times or more) M _a : Initial number of bacteria in the control sample (average value) M _b : Number of bacteria in the control sample after incubation for 24 hours (average value) M _c : Number of bacteria in the test sample after incubation for 24 hours (average value)

3. Antibacterial Activity Test (JIS Z 2801)

1) Staphylococcus aureus

        Silver Nano 100 ppm Zeolite 500 ppm

PE 2,000 ppm (Triclosan) PP 2,000 ppm (Triclosan)

2) Escherichia coli

      Silver Nano 100 ppm Zeolite 500 ppm

   PE 2,000 ppm (Triclosan) PP 2,000 ppm (Triclosan)

Test strain
Contents Strain 1: Staphylococcus aureus ATCC 6538P Silver nano Zeolite PE PP Inoculation bacteria concentration (CFU / mL) 2.6 × 10 ⁵ Growth value (F) 1.6 M _a 2.6 × 10 ⁵ M _b 1.1 × 10 ⁷ M _c 8.2 × 10 ⁶ 8.5 × 10 ⁶ <10 <10 Antibacterial activity value (S)-Reduction rate (% by weight) (0.1) 25.9 (0.1) 22.4 (6.0) 99.9 (6.0) 99.9

Test strain
Contents Strain 2: Escherichia coli ATCC 8739 Silver nano Zeolite PE PP Inoculation bacteria concentration (CFU / mL) 2.5 × 10 ⁵ Growth value (F) 1.7 M _a 2.5 × 10 ⁵ M _b 1.4 × 10 ⁷ M _c 8.9 × 10 ⁶ 9.6 × 10 ⁶ <10 <10 Antibacterial activity value (S)-Reduction rate (wt%) (0.2) 36.2 (0.1) 31.7 (6.1) 99.9 (6.1) 99.9

Note) <: less than

     CFU: Colony Forming Unit

Test strain used: Strain 1 Staphylococcus- Staphylococcus aureus ATCC 6538P
Strain 2 Escherichia coli- Escherichia coli ATCC 8739 Standard clad film: Stomacher 400 POLY-BAG Test condition: Test bacteria after 35 hours of incubation at 35 ± 1 ℃, RH 90 ± 5% by weight Sample surface area: 25 cm 3 Antibacterial activity value (S): log (M _b / M _c ) reduction rate (wt%): [(M _b -M _c ) / M _b ] × 100 Proliferation (F): log (M _b / M _a ) (1.5 or more) M _a : Average number of viable bacteria immediately after inoculation of test bacteria of standard sample (3 samples) M _b : Average number of viable cells after incubation (24 hours) for standard sample (3 samples) M _c : Average number of viable cells after incubation for a certain time (24 hours) of antimicrobial samples (3 samples)

4. Flavor Test (ISO 846)

       Silver Nano 100 ppm Zeolite 500 ppm

PE 2,000 ppm (Triclosan) PE 2,000 ppm (Triclosan + Zincpyridion)

PP 2,000 ppm (Triclosan) PP 2,000 ppm (Triclosan + Zincpyridion)

division
Contents ISO 846 TM B Silver nano Zeolite PE (TCN) PE (TCN + ZPT) PP (TCN) PP (TCN + ZPT) Rating 5 5 0 0 0 0

-TM B: How to add nutrients (3% by weight Glucose)

Strength of growth 0: No observation under microscope, growth low zone exists, expressed in mm
1: visual observation is not possible, but can be observed under a microscope
2: grow to less than 25% by weight of the specimen
3: grow to less than 25-50% by weight of the specimen
4: grow to less than 50-100% by weight of the specimen
5: completely cover the specimen Used strain Aspergillus niger ATCC 6275
Chaetomium globosum ATCC 6205
Penicillium funiculosum CMI 114933
Paecilomyces variotii ATCC 18502
Gliocladium viren ATCC 9645 Culture condition 29 ± 1 ° C (84 ± 2 ° F), RH 85 wt%, 4 week incubation Sample size 25 mm × 25 mm

1 is a liquid silver nano colloid-based antimicrobial plastic production flow chart,

Figure 2 is a powder zeolite-based antibacterial plastic production flow chart,

3 is a flow chart of a method for producing a plastic having antibacterial and antifungal properties according to the present invention;

4 is a schematic view of a sealed container.

Claims (16)

A mixing step of mixing 1-10 parts by weight of triclosan, which serves as an antibacterial and antifungal part, to 100 parts by weight of the base resin to make a mixture; A kneading step of mixing while applying heat to the mixture so that the base resin is completely dissolved; Extruding the molten mixture through a kneading step; A chip manufacturing step of manufacturing a master batch chip by cutting the extruded mixture into cooling, drying, and a constant size; 1 to 10 parts by weight of the master batch chip with respect to 100 parts by weight of the new base resin, which is the same as the base resin used in the mixing step, comprising a product forming step of producing a product by producing antibacterial and antifungal properties Method for producing a plastic having. The antimicrobial and antifungal properties of claim 1, wherein the mixing step further comprises adding 1 to 5 parts by weight of a jintpyrithione, which serves as an antibacterial and antifungal agent, based on 100 parts by weight of the base resin. Method for producing a plastic having. [Claim 3] The method of claim 1 or 2, wherein the triclosan and zinc pyrithione are dissolved or dispersed in an organic solvent to form a liquid and then subjected to the mixing step. The antimicrobial and antifungal mold according to claim 1 or 2, wherein the base resin is any one of acrylonitrile-butadiene-styrene terpolymer, polyethylene, polypropylene, polycarbonate, polystyrene or polyethylene terephthalic acid. Method for producing a plastic having characteristics. The method of claim 1 or 2, wherein the extruder in which the mixing step, the kneading step, and the extruding step is performed is a single screw extruder. Plastic having antibacterial and antifungal properties, characterized in that it contains 0.1 to 1.0 parts by weight of triclosan, which plays an antibacterial and antifungal role, based on 100 parts by weight of the base resin. The method according to claim 6, wherein the antibacterial and anti-fungal plastics, characterized in that it further comprises 0.1 to 0.5 parts by weight of zinc pyrithione to act as an antibacterial and anti-mold relative to 100 parts by weight of the base resin. Plastic with antibacterial and antifungal properties. 8. The antimicrobial and antifungal composition according to claim 6 or 7, wherein the base resin is any one of acrylonitrile-butadiene-styrene terpolymer, polyethylene, polypropylene, polycarbonate, polystyrene or polyethylene terephthalic acid. Plastic with properties. According to claim 8, wherein the base resin is acrylonitrile-butadiene-styrene terpolymer, the plastic having the antibacterial and anti-mildew characteristics is 0.2 to 1.0 parts by weight of triclosan and zinc pi 100 parts by weight of the base resin Rich-on plastic having antibacterial and antifungal properties, characterized in that it comprises 0.1 to 0.5 parts by weight. The method of claim 8, wherein the base resin is polyethylene, and the antibacterial and anti-fungal plastic has 0.1 to 0.3 parts by weight of triclosan and 0.1 to 0.2 parts by weight of zinc pyrithione based on 100 parts by weight of the base resin. Plastic having antibacterial and antifungal properties, characterized in that. The method of claim 8, wherein the base resin is polypropylene, the antimicrobial and anti-fungal plastics include 0.1 to 0.3 parts by weight of triclosan and 0.1 to 0.2 parts by weight of zinc pyrithione based on 100 parts by weight of the base resin Plastic having antibacterial and antifungal properties, characterized in that. The method of claim 8, wherein the base resin is a polycarbonate, the antimicrobial and anti-fungal plastics include 0.2 to 0.5 parts by weight of triclosan and 0.1 to 0.3 parts by weight of zinc pyrithione based on 100 parts by weight of the base resin Plastic having antibacterial and antifungal properties, characterized in that. The method of claim 8, wherein the base resin is polystyrene, and the antibacterial and anti-fungal plastics include 0.2 to 0.5 parts by weight of triclosan and 0.1 to 0.3 parts by weight of zinc pyrithione based on 100 parts by weight of the base resin. Plastic having antibacterial and antifungal properties, characterized in that. The method of claim 8, wherein the base resin is polyethylene terephthalic acid, the antibacterial and anti-fungal plastics include 0.2 to 1.0 parts by weight of triclosan and 0.1 to 0.5 parts by weight of zinc pyrithione based on 100 parts by weight of the base resin Plastic having antibacterial and antifungal properties, characterized in that. A product comprising a plastic having antibacterial and antifungal properties produced by claim 1 or 2, wherein the product is any one of a washing machine, an air conditioner, a refrigerator, a bidet, a humidifier, an air cleaner, an airtight container, and an infant block. Products using plastic having antibacterial and antifungal properties, characterized in that. In the sealed container consisting of a lid portion and the main body portion and sealed by the combination of the lid portion and the main body portion, The body portion or the lid portion is 0.1 to 1.0 parts by weight of triclosan and zinc pyrithione 0.1 to 0.5 parts by weight to act as antibacterial and antifungal against 100 parts by weight of the base resin of any one of polyethylene, polypropylene, polycarbonate or polyethylene terephthalic acid The product is made of plastic having antibacterial and antifungal properties, characterized in that the addition is transparent and can be seen inside the transparent.

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