KR101622369B1 - Antimicrobial vinyl Manufacturing Method And Apparatus And antimicrobial vinyl Produced Therefrom - Google Patents

Abstract

The present invention relates to a method and a device for producing antimicrobial vinyl and antimicrobial vinyl produced therefrom. Various ways of processes are performed with respect to vinyl ingredients, from antimicrobial ingredient feeding to spraying, corona treating, and dipping, so a continuous antimicrobial function and uniform antimicrobial power are ensured.

Description

[0001] The present invention relates to a method and an apparatus for producing an antimicrobial vinyl and an antimicrobial vinyl obtained from the same,

The present invention relates to a method and an apparatus for producing an antimicrobial vinyl and an antimicrobial vinyl obtained therefrom. More particularly, the present invention relates to an antimicrobial vinyl obtained by mixing and injecting an antimicrobial agent at the time of adding a vinyl raw material and then spraying and surface embossing A method for producing antimicrobial vinyl through a series of steps from the step of applying the antimicrobial compound to a liquid phase having antimicrobial activity, and a method for producing the antimicrobial vinyl, and an antimicrobial vinyl obtained therefrom.

In general, vinyl is used in agricultural fields to promote the growth of crops, to achieve a high yield rate, to improve the quality of crops, and to be used in various fields as well as food packaging and real-life product packaging.

In particular, agricultural vinyl is widely used for mulching (vinyl covering the soil surface of cultivated crops), but it remains below expectations for suppressing the occurrence of insect pests and improving the quality of crops.

Of course, in order to overcome these problems, research has been conducted on antimicrobial vinyls, and a variety of antimicrobial vinyls have been developed.

However, it is difficult to expect antimicrobial effect when it is continuously used even though the various antimicrobial materials are vinyl-based vinyls, since the antimicrobial effect can not be maintained for a long period of time.

The reason why such antimicrobial action is not maintained well is that there is no particular know-how in the manufacturing process or manufacturing apparatus of the antimicrobial vinyl that combines vinyl and various antimicrobial substances. Therefore, when the antimicrobial vinyl is used for a long time, This is because antibiotic substances can not be fully preserved due to external factors.

That is, for example, when the antimicrobial vinyl is exposed to rain or sunlight for a long period of time, the antimicrobial substances applied to the vinyl may not be able to perform the continuous antibacterial action.

In other words, the antimicrobial vinyl produced through the conventional manufacturing method or apparatus is applied only on the vinyl surface, and when it is adhered to such a coating method, the antimicrobial substances are easily washed away from the vinyl surface It is not possible to expect the antibacterial activity and the uniform antibacterial activity of the antibacterial vinyl.

Therefore, it is not expected to improve the quality of crops because the effect of inhibiting insect pests and antimicrobials is lowered, and even if a variety of strong antimicrobial substances are added to vinyl, it gives great significance to the relation with continuous antibacterial activity and uniform antibacterial activity Can not.

In addition, vinyl is also used for food packaging. In this case, as long as the preservation period of the internal food is prolonged, it is necessary to solve the problem of creating an environment in which harmful bacteria can live.

Patent Document 001 Patent No. 10-0916017, Patent Document 002 Patent Laid-open No. 10-2014-0146428,

The present invention for solving the above-mentioned problems is to provide a method and apparatus for producing antimicrobial vinyl which can maintain the antimicrobial action persistence and uniform antimicrobial activity against vinyl used for a long time in various fields such as agriculture and food, The present invention is directed to provide antimicrobial vinyls.

In order to accomplish the above-mentioned object, the present invention provides a method of manufacturing an antibacterial masterbatch, comprising: a charging unit including a hopper into which a blend of polyethylene and an antibacterial masterbatch for PE can be charged; A heating transfer unit including a heating device for heating the blend introduced into the hopper to form a viscous film and including a screw for transferring the film by rotational motion; A spraying portion for blowing the film (compound) in a viscous state in a cylindrical shape and spraying the antibacterial solution onto the surface of the blown film; An embossing processing unit in which a press roller is built in the plate so as to be embossed in a pressing manner with respect to the surface of the film; A corona treatment part composed of a ground roll so that a corona discharge can be performed on the embossed film, an insulator surrounding the ground roll, and a discharge electrode adjacent to the insulator; An impregnation inducing roller for inducing film impregnation so that the film subjected to the corona discharge treatment is impregnated with the antimicrobial solution; and a second impregnation guide roller provided on the right and left sides of the impregnation guide roller to smoothly guide the film before and after impregnation toward the impregnating guide roller An impregnating portion consisting of a proximity roller for separating or separating the antibacterial solution and a bucket containing the antibacterial solution; And a plurality of distribution rollers for winding each of the films divided from the coupling rollers, wherein the plurality of rollers are arranged in a stacked manner between the coupling rollers and the distribution rollers, A winding section further including a pair of cutting edges for cutting the film from both sides; Wherein the sprayer is provided with a conical sprayer whose diameter is increased from the bottom to the top so that the film (blend) can be blown in a cylindrical form, and the sprayer has a predetermined gap , And an injectable ring member is fastened between the double walls with the antibacterial solution stored therein.

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The ring member includes a plurality of holes provided with a plurality of angle adjusting members and jet nozzle members along the inner circumference of the ring member; And a storage box provided at one side of the ring member for storing the antibacterial solution.

The angle adjuster may include an elliptical round formed on the inner wall of the hole. And further comprising a plurality of holes formed in the surface of the round while maintaining a predetermined gap therebetween.

Wherein the injection nozzle member slides along the angle regulating member and adjusts the position of the injection point of the antibacterial liquid; And a plurality of spray tubes for spraying an antimicrobial liquid from one side of the body and controlling the spraying point distance of the antibacterial liquid.

The body may include a round formed in a concave shape such that a bottom surface of the body slides along an angle adjusting member; A bite that protrudes downward from the front and rear ends of the round so as to be slid on the round of the angle adjuster; Wherein the body is inserted into the hole formed in the round portion of the angle adjusting member to fix the body in the sliding process of the body, The invention further relates to an apparatus for producing an antimicrobial vinyl further comprising a spring.

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The method and apparatus for producing antimicrobial vinyls according to the present invention and the antimicrobial vinyls obtained therefrom are capable of producing vinyls superior in antimicrobial activity to those of existing technologies and capable of improving the persistence and uniformity of the antimicrobial activity through several times of antimicrobial treatment .

Further, the method and apparatus for producing antimicrobial vinyls according to the present invention and the antimicrobial vinyls obtained therefrom are particularly effective for reducing the occurrence of pests and diseases when applied to agricultural mulching (vinyl covering the surface of aged soil in the cultivation of crops) There is an effect that improvement can be expected.

In addition, the method and apparatus for producing antimicrobial vinyls according to the present invention and the antimicrobial vinyls obtained therefrom have the effect of expanding into functional products having excellent antibacterial activity in various fields of real life such as food packaging.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a process for producing an antimicrobial vinyl according to the present invention.
FIG. 2 is an overall view showing a side view of the entire device provided in the production of the antimicrobial vinyl according to the present invention,
FIG. 3 is a perspective view of the input unit shown in FIG. 2,
Fig. 4 is a perspective view of a dispenser for the dispensing portion shown in Fig. 2,
FIG. 5 is a perspective view showing a state of a cross section of the ring member shown in FIG. 4 with reference to FIG. 2,
FIG. 6 is a perspective view showing an injection nozzle member provided in a hole formed in the ring member shown in FIG. 5,
FIG. 7 is a perspective view for showing the shape of the bottom of the injection nozzle member shown in FIG. 6,
FIG. 8 is a side view showing a connection state of the nozzle member and the angle regulating member shown in FIG. 6,
FIG. 9 is a front view showing a connection state between the injection nozzle member and the angle regulating member shown in FIG. 6,
Fig. 10 is a perspective view of the corona treatment portion shown in Fig. 2,
FIG. 11 is a side view of the impregnating portion shown in FIG. 2,
Fig. 12 is a photograph showing the results of a test comparing antimicrobial processed test pieces (antimicrobial vinyl corresponding to the test group of the present invention) obtained from the antimicrobial test on the antimicrobial vinyl of the present invention and non-processed test pieces (vinyl corresponding to the control group).

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. And it should be interpreted based on the technical ideas throughout the specification taking into consideration that various modifications are made.

In addition, the present invention should not be construed as being limited to the embodiments described below, but should be construed as a scope of scope including an extended scope interpreted based on the technical content described in the specification.

FIG. 1 is a whole view showing a process of a method for producing an antimicrobial vinyl according to the present invention, and FIG. 2 is a cross-sectional view showing the entire device provided in the production of the antimicrobial vinyl according to the present invention, FIG. 3 is a perspective view of the injection unit shown in FIG. 2, FIG. 4 is a perspective view of the dispenser for the injection unit shown in FIG. 2, and FIG. 5 is a cross- FIG. 6 is a perspective view showing an injection nozzle member provided in a hole formed in the ring member shown in FIG. 5, and FIG. 7 is a cross-sectional view of the ring member shown in FIG. FIG. 8 is a side view showing the connection state of the injection nozzle member and the angle regulating member shown in FIG. 6, and FIG. 9 is a side view showing the state of the injection nozzle member shown in FIG. And angle adjustment FIG. 11 is a side view of the impregnation unit shown in FIG. 2, and FIG. 12 is a front view of the corona treatment unit shown in FIG. (Antimicrobial vinyl corresponding to the test group of the present invention) and a non-processed test piece (vinyl corresponding to the control group).

Hereinafter, with reference to the accompanying drawings, a method and an apparatus for producing an antimicrobial vinyl according to a preferred embodiment of the present invention and the antimicrobial vinyl obtained therefrom will be described in more detail.

2, the method of producing antimicrobial vinyl according to the present invention comprises a first step of mixing a raw material of vinyl and an antibacterial raw material together into a hopper as shown in FIG. 1, and a first step of mixing the raw material of the vinyl raw material + A second step of blowing an antibacterial solution onto the surface of the blown film, blowing the film in a cylindrical form, treating the surface of the film with a surface embossing, A fifth step of impregnating the antibacterial solution with the film subjected to the corona discharge treatment, and a sixth step of dividing the impregnated film and winding the film by each roller .

In the first step, the raw material of vinyl is poured into the hopper 11 in the form of a pellet. The hopper 11 may be mixed with the vinyl raw material and the antibacterial raw material, The raw material and the antibacterial raw material can be mixed and dispensed.

As the raw material compounding agent, in the case of vinyl, it may be polyethylene, which is abbreviated as PE, but it is not limited to PE but may be any material that can be processed by vinyl. The PE includes linear low density polyethylene (LLDPE) and low density polyethylene (LDPE).

The antimicrobial masterbatch can be used as the antimicrobial raw material, but not limited thereto, and any antimicrobial active substance may be included.

As an example, the vinyl raw material and the antibacterial raw material to be fed into the hopper 11 are mixed in the hopper 11. In this case, the blending may be combined with the antibacterial master batch for LLDPE, LDPE and PE, and the optimum blending ratio is LLDPE 100 weight , 2.4 parts by weight of LDPE and 10 to 12 parts by weight of an antimicrobial master batch.

Herein, 10 to 12 parts by weight of the antimicrobial masterbatch acts as a main factor. If the weight part is less than 10 parts by weight, the antimicrobial substance may be easily decomposed by ultraviolet rays generated from sunlight, pesticides or rainwater, , And in the case of exceeding 12 parts by weight, it is possible to sterilize the beneficial bacteria which help crop growth, the range of the above weight parts is absolutely necessary and appropriate.

The antimicrobial master batch for LLDPE, LDPE and PE may be optionally added with an anti-fogging agent. The anti-fogging agent plays an anti-fogging role as it is known from the term anti-fogging to be.

In other words, there is a phenomenon that the moisture in the film is condensed due to the difference in the temperature of the outer surface of the film, the film is blurred and the crop in the film is not visible from outside. To prevent such phenomenon, There is a problem that the growth state of the crop can not be grasped from the outside of the film and there is a fear that the crop may be easily changed when the water droplet touches the crop due to the condensation of water and the freshness of the crop and the growth So that promotion can be promoted.

 In the first step, the tentative blend (vinyl raw material + antibacterial raw material) charged into the hopper 11 is conveyed along a screw (not shown) transversely constructed as the heat transfer section 20, The raw material + the antibacterial raw material) is transferred to the dispersing unit 31 of the spraying unit 30 to be described later by the rotational force of a screw (not shown).

At this time, the blend (vinyl raw material + antibacterial raw material) is changed into a film FL in a viscous state as it is heated through a heating device provided around a screw (not shown).

That is, the formulation becomes a film (FL) of a fluid adhesive material in a solid state in a solid state as it is heated in the process of moving to the injection device by the rotation operation of the screw.

In the second step, the film FL enters the distributor 31 of the sprayer 30 as an injector. In the process of moving the film FL in the upward direction, The antimicrobial liquid is sprayed onto the surface of the film as the antibacterial liquid is sprayed from the antibacterial agent 33.

At this time, the film FL is blown in a cylindrical shape in the same manner as the effect of blowing the antibacterial liquid by the spraying force of the antibacterial liquid in the upward movement of the film FL toward the receiving plate 36 and the embossing processing unit 40, Shape.

In this case, since the injection angle of the injection nozzle member 33 can be variously adjusted when the antibacterial liquid is injected, the coating film 31 of the antibacterial solution is applied to the surface of the film FL, This layer is composed of several layers.

The film (FL) coated with the antibacterial liquid enters the collection plate (36) in the process of moving upward. The collection plate (36) is installed in the shape of a curved cap. Are naturally doubled up through the collection plate 36.

The folded film FL enters the inside of the plate 41 of the embossing processing unit 40 which is an embossing processing apparatus and is caught by the press roller 42 built inside the plate 41.

The pressing roller 42 forms a concave-convex pattern on the surface thereof, so that the film FL entering the pressing roller 42 is pressed and embossed on its surface. Of course, the pattern formed on the surface of the pressing roller 42 can be not only a concavo-convex pattern but also various patterns. Further, a punching die as well as the press roller 42 may also be used.

The film FL having the embossed shape soon enters the corona processing unit 50 as a corona treatment apparatus and is discharged from the surface of the film FL as the corona discharge treatment is performed while passing between the ground roll 51 and the discharge electrode 52 The company log or brand name for promoting the company name or brand can be applied in various colors from the inside to the inside.

Of course, you do not need to perform company logs or branding, so you may omit circuit logging or branding.

The main reason for the corona discharge treatment is to make the antimicrobial materials integral with the film FL from the surface of the film FL to the inside thereof because the antimicrobial substance exists deeply from the surface of the film FL to the inside thereof Therefore, when used for agricultural use mulching (vinyl which covers the surface of the soil when cultivating crops), the antimicrobial substance does not disappear even in the external factors such as climate and weather, so long-term antimicrobial activity and uniform antimicrobial activity .

The film (FL) subjected to the corona discharge treatment soon enters the impregnation induction roller (61) of the impregnation unit (60) as an impregnation unit. The proximity rollers 62 disposed close to the right and left sides of the impregnating guide roller 61 serve to flexibly close or separate the film FL with the impregnating guide roller 61. [

The film FL passing through the impregnating guide roller 61 is completely immersed in the antibacterial solution contained in the bucket 63 as it is quenched in the bucket 63 disposed at the lower part. In the process of impregnation of the antimicrobial solution, the antimicrobial solution can permeate from the surface of the film (FL) subjected to the corona discharge to the deep inside.

 After impregnation, the film (FL) enters the coupling roller (71) of the winding unit (70), which is a wind unit, and is wound through a plurality of distribution rollers (72) The film (FL) passing through the pressing roller (71) is folded in the form of a double layer and divided into a single film (FL) and rolled through the corresponding distribution roller (72).

At this time, a sharp cutting edge (not shown), which can cut both side edges of the film FL between the pressing roller 71 and the plurality of dispensing rollers 72 so that the folded film FL can be cut and cut into a single sheet, (Not shown).

As described above, each of the films (FL) divided into a single sheet in the double layer is wound through the distribution roller (72), thereby completing the manufacturing method of the antibacterial vinyl.

As described above, the production method according to the present invention is characterized in that an antibacterial substance extending from the mixing of the antibacterial raw material to injection and impregnation is added, and that the antimicrobial substance in the addition process of the antibacterial substance The present invention is characterized in that a corona treatment method is applied.

As shown in FIG. 2, the manufacturing apparatus according to the present invention includes a charging unit 10 for mixing a vinyl raw material and an antibacterial raw material, a mixture of a vinyl raw material and an antibacterial raw material, (30) for spraying the sprayed liquid onto the film surface, an embossing treatment part (40) for applying an embossing shape to the surface of the film to be sprayed, a film having embossed shape A corona treatment section 50 for performing corona discharge for the corona treatment, an impregnation section 60 for quenching the corona-treated film in an antimicrobial solution, and a winding section 70 for winding the quenched film into a single sheet, .

As shown in FIG. 3, the charging unit 10 may include a hopper 11 that can be charged with a mixture of a vinyl raw material and an antibacterial raw material, and may include a vinyl raw material and an antibacterial raw material And may be provided with two hoppers 11 for input.

The heating transfer unit 20 is heated by a screw (not shown) and a heater installed in the vicinity of the pipe to heat the blend (vinyl raw material + antibacterial raw material) charged into the hopper 11 to produce a viscous film FL ), And the film FL is transported by the rotational motion of the screw.

2, the sprayer 30 includes a conical sprayer 31 and a spray nozzle 32 provided in a ring member 32 provided along the periphery of the distributor 31. The sprayer 30 is provided with a spray nozzle 31, The film (FL) is blown through the members (33) in a cylindrical shape and simultaneously the antibacterial liquid is sprayed onto the film surface. The antimicrobial liquid may be applied to a film (FL) containing a titanium dioxide photocatalyst and a zeolite material.

Here, the distributor 31 has a conical shape, but the cones are arranged in an inverted manner. This is because the film transferred along the pipe pipe of the heating transfer part 20 blows and is transformed into a cylindrical shape, And the diameter thereof is increased toward the upper direction of the using machine 31. [

As shown in FIG. 4, the distributor 31 has a double-walled structure 31a having a predetermined gap at its top end for easy fastening of the ring member 32 between the double walls 31a.

The ring member 32 has a storage box 32-1 capable of containing an antibacterial solution on its peripheral side surface and a plurality of holes 32a with a predetermined clearance along the inner side surface of the ring.

Each of the holes 32a is formed with an angle adjusting hole 32b. The angle adjusting hole 32b is formed by a semicircular round 32c and a curved surface 32c, as shown in FIGS. 6, 8, Thereby forming a plurality of holes 32d with a constant clearance.

Since the injection nozzle members 33 are fastened to the individual angle adjusting members 32b in a sliding manner, the injection angle of the injection nozzle members 33 sliding along the semi-circular round 32c can be adjusted .

5 to 9, the injection nozzle member 33 includes a body 34 slidable in a round 32c of the angle regulating opening 32b, a multi- (35). Particularly, the body 34 is formed in a round shape so that the bottom portion of the body 34 can be slidably inserted into the round 32c of the angle adjusting opening 32b, and the front and rear ends of the round opening 34b And a bite hole 34b which can be engaged with the round 32c in a biting manner and includes a plate spring 34c having a stopper 34cc formed at the center of the round 34a.

As a result, it can be seen that the engaging holes 34b provided on the bottom of the bottom 34a of the bottom surface of the body 34 are not in contact with the inner circumferential surface of the angle adjuster 32b The injection nozzle member 33 slides along the round 32c of the angle regulating opening 32b and adjusts the spray angle of the spray pipe 35 while being engaged with the round 32c.

At this time, since the injection nozzle member 33 must be fixed when the specific injection angle is set, any one of the plurality of holes 32d formed in the round 32c of the angle adjusting member 32b, The body 34 is fixed by the insertion of the hook 34c of the leaf spring 34c provided in the bottom round 34a while being elastically deformed so that the fixing of the body 34 can be performed at a specific angle of injection.

6 and 8, the leaf spring 34c is interposed between the round 34a of the body 34 and the round 32c of the angle regulating opening 32b, The protrusion 34cc formed at the center of the leaf spring 34c is inserted into the round 32c of the angle adjuster 32b while the protrusion 34cc is formed at the center of the leaf spring 34c, When the hole 32d coincides with any one of the plurality of holes 32d formed, the hook 34cc is elastically deformed and inserted into the hole 32d.

Since the body 34 is fixed by the insertion of the latching claw 34cc, the injection angle of the antibacterial liquid injected from the injection tube 35 can be adjusted and specified.

As the antimicrobial solution is applied to the surface of the film FL through the injection process of the antibacterial solution, the film FL is blown into a cylindrical shape and is moved and collected by the collection plate 36, which will be described later.

As shown in FIG. 2, the collection plate 36 has a shape in which the diameters thereof become narrower toward the upper portion so that the film FL that has been blown as a conical shape can be collected in a flat shape. The film (FL) passing through the collection plate (36) enters the emboss processing unit (40).

2, the embossing unit 40 includes a plate 41 and a pressing roller 42. The embossing unit 40 includes a pressing roller 42 disposed inside the plate 41, The emboss pattern can be formed on the surface thereof. Thereafter, the embossed film FL enters the corona treatment section 50 described later.

2, the corona processing unit 50 includes an insulator 51a and a discharge electrode 52 surrounding the ground roll 51 and the ground roll 51 as shown in FIG. Enters between the insulator 51a and the discharge electrode 52, and corona discharge is performed.

At this time, the company log or brand name may be marked on the surface of the film (FL) in various colors or may be omitted. The corona discharge treated film (FL) enters the impregnation part (60) described later.

Referring to FIG. 2, the impregnating unit 60 includes an impregnating guide roller 61 and a pair of adjacent rollers 62 and a bucket 63 disposed close to the impregnating guide rollers, as shown in FIG. The film FL is smoothly guided to the impregnating guide roller 61 by the proximity roller 62 or is inductionally separated from the impregnating guide roller 61 after impregnation.

The film FL is quenched and impregnated into the antibacterial solution contained in the bucket 63 disposed at the lower portion by the impregnating guide roller 61. At this time, the film FL subjected to the corona discharge treatment through the corona treatment portion 50 is antibacterial The liquid penetrates deeply from the surface to the inside and can be integrated with the film (FL).

This is because the antimicrobial solution is completely integrated with the film (FL), thereby contributing to the continuous antibacterial action and uniform antibacterial activity of the antibacterial solution. After impregnation, the film FL enters the winding section 70, which will be described later.

The winding unit 70 is constituted by a combination roller 71 disposed on the upper side and a distribution roller 72 disposed on the lower side as shown in FIG. 2, and the film FL is rejoined through the coupling roller 71 Through the distribution roller 72, the double-ply structure is divided into a single-piece single-piece structure and wound.

In this case, in the region between the pressing roller 71 and the dispensing roller 72, cutting edges for cutting both side edges of the film FL so that the double-folded film FL can be divided into a single- .

In addition, the frame F can be protected from the outside by the frame F extending from the jetting section 30 to the embossing processing section 40. In the embossing processing section 40, due to the construction of the frame F, (1, 2, 3) capable of switching the direction of the film (FL) to reach the winding part (70) coming from the impregnating part (60) May be installed.

Meanwhile, in order to demonstrate the superiority of the antimicrobial effect on the antimicrobial vinyl obtained by the production method and apparatus of the present invention, the following test test was conducted.

Antimicrobial activity of Gram - negative E. coli and Gram - positive S. aureus were tested to determine the antimicrobial effect of PE film for food packaging.

This test was conducted in accordance with the test method provided by the sponsor (JIS Z 2801: 2012, antimicrobial processed product - antibacterial test method). The host organization is KTR (Korea Testing & Research Institute).

In accordance with the film adhesion method of the antibacterial effect (JIS Z 2801: 2012), the test is carried out in accordance with the Japanese industrial standards Z 2801: 2012 antimicrobial test product proposed by the applicant to evaluate the antibacterial effect of the test substance. (Escherichia coli) and Staphylococcus aureus (Gram-positive bacteria).

All specimens were inoculated with test bacteria and cultured for (24 ± 1) hours at (35 ± 1) ℃ and relative humidity of 90% or more. Then, the number of viable cells was measured by collecting the bacteria from each specimen and the antibacterial activity was calculated. The antimicrobial activity of the sample (PE film for food packaging) under the test conditions was found to be 1.8 and 3.8 for E. coli and 3.8 for S. aureus.

Test apparatuses include Autoclave of Korea's Coatec Co., Dry oven of Jisico Co., Water bath of Polyscience of USA, Incubator of Memmert of Germany, pH meter of Thermo Orion of USA, Vortex mixer of Thermolyne of USA, Container of Iwaki pyrex of Japan , Volumetric flask of Myung Sung Co., Mechanical shaker of Jisico, Clean bench of hand-operated company, Colony counter of Deokwoo Scientific Co., Interscience of France).

Escherichia coli ATCC 8739 and Staphylococcus aureus ATCC 6538p were used for the test materials. Nutrient broth of Difco Co., Nutrient agar of Difco Co., Plate count agar of Difco Co., USA, and SCDLP broth of Eiken Co., , And physiological saline were used.

In the test method, the pre-culture of the test bacteria was incubated at a temperature of (35 ± 1) ° C. (16 to 20) for the incubation period on the slope medium from the preserved strain. The preparation of the test bacteria was performed by diluting the cultured bacteria (2.5 to 10) × 10 ⁵ cells / mL in Nutrient broth (1/500 NB).

The specimens were prepared in a square size of (50 ± 2) mm with the flat parts of the antimicrobial specimens and the untreated specimens, and all surfaces of the specimens were cleaned using ultraviolet light (UV lamp). The untreated test specimen and the coated film in this test are 2.1. A prototype film was used.

To inoculate and cultivate the test strain, 0.4 mL of the prepared inoculum is inoculated on the test surface of each specimen placed in the Petri dish, and the inoculum is spread over the test specimen. The Petri dish stopper is then closed ± 1) ° C relative humidity of 90% or more (24 ± 1) hours.

For the recovery and measurement of the test bacteria, 10 mL of SCDLP broth was used to recover the bacterium from each of the antimicrobially-treated test pieces and the non-processed test pieces after 24 hours of non-processed test pieces immediately after the test inoculation. Plate count agar was used to measure the number of viable cells after incubation at (35 ± 1) ° C and (40-48) hours.

As a result calculation, the number of viable cells is calculated by [Equation 1.] N = (C x D x V) / A.

(Dilution factor of diluted solution), V: liquid amount (ml) of SCDLP medium used for bacterial solution recovery, N: number of living cells (per one test piece), C: number of colonies Here, 10 mL, surface area of the A: coated film (cm ² ).

The calculation of the antibacterial activity is as follows: R = (Ut - Uo) - (At - Uo) = Ut - At.

R: Antibacterial activity value, Uo: Average log value of viable cell count immediately after inoculation of a non-processed test piece, Ut: Average log value of viable cell count after 24 hours of non-processed test piece, At: Log value of viable cell count after 24 hours Average.

The conditions of the test are as follows: Lmax: L _max - L _min / (L _mean ) ≤ 0.2.

L _max : maximum number of viable cell counts, L _min : minimum number of viable cell counts, and L _mean : average number of viable cell counts of three specimens.

The average value of viable cell count immediately after inoculation of the non-processed test pieces was 6.2 × 10³~ 2.5 x 10⁴) CFU / cm²ego, The number of viable bacteria for the number of viable cells after 24 hours in the non-processed test pieces was 62 CFU / cm²(However, when the film was used for the non-processed test piece, the number of the three live bacteria was 6.2 x 10² CFU / cm²More than)

As a result, the initial number of inoculated bacteria was 1.1 × 10 ⁴ CFU / cm ² as in the antibacterial test for E. coli (Table 1, below), and the non-processed test pieces after 24 hours had [2.6 × 10 ⁴ CFU / cm < ² >], and the antimicrobial working test piece was [4.0 x 10 ² CFU / cm ² ].

The initial number of inoculated bacteria was [1.1 × 10 ⁴ CFU / cm ² ] as in the antimicrobial test for S. aureus (Table 2 below), the untreated test piece after 24 hours was [4.2 × 10 ³ CFU / cm ² ] , And the antibacterial test specimen was [0.63 CFU / cm ² ].

E. Coli Antibacterial Test (Unit: CFU / cm ² ) division Early After 24 hours Non-machined test specimen
2.6 x 10 ⁴ Antimicrobial working test piece 4.0 x 10 ²

S. aureus antibacterial test (unit: CFU / cm ² ) division Early After 24 hours Non-machined test specimen
2.6 x 10 ⁴ Antimicrobial working test piece 4.0 x 10 ²

Comprehensive antibacterial test result Test strain division After 24 hours Antimicrobial activity value E. Coli
Non-machined test specimen 4.4 Antimicrobial Song Test Specimen 2.6 1.8 S.aureus
Non-machined test specimen 3.6 Antimicrobial working test piece -0.2 3.8

- Antibacterial activity value (R) = (Ut - Uo) - (At - Uo) = Ut - At

Here, R: antimicrobial activity value

Uo: Average value of log value of viable cell count immediately after inoculation of non-processed test piece

Ut: Average value of log value of viable cell count after 24 hours of the non-processed test piece

At: Average log value of viable cell count after 24 hours in antibacterial specimens.

As a result, the antibacterial activity values of the samples (PE film for food packaging) that were requested as a result of the test were 1.8, E. coli, Gram-positive bacteria, S. aureus, S. aureus, S. aureus and S. aureus. aureus) showed an antibacterial activity value of 3.8.

Antimicrobial activity value Antimicrobial effect 1 or more 90.00% or more 2 or more 99.00% or more 3 or more 99.90% or more 4 or more 99.99% or more

Based on the above test data, the final test results can be refer to Table 5 below.

Antibacterial property test for PE film for food packaging as an antibacterial product

Test Items unit Sample classification Results Test Methods Antibacterial test (E. coli) - Uo 4.1 (1.1 x 10 ⁴ CFU / cm ² JIS Z 2801: 2012 Antibacterial test (E. coli) - Ut 4.4 (2.6 x 10 ⁴ CFU / cm ² JIS Z 2801: 2012 Antibacterial test (E. coli) - Horse 2.6 (4.0 x 10 ² CFU / cm ² JIS Z 2801: 2012 Antibacterial test (E. coli) - R 1.8 JIS Z 2801: 2012 Antibacterial test (S. aureus) - Uo 4.1 (1.1 x 10 ⁴ CFU / cm ² JIS Z 2801: 2012 Antibacterial test (S. aureus) - Ut 3.6 (4.2 x 10 ³ CFU / cm ² JIS Z 2801: 2012 Antibacterial test (S. aureus) - Horse -0.2 (0.63 x 10 ⁴ CFU / cm ² JIS Z 2801: 2012 Antibacterial test (S. aureus) - R 3.8 JIS Z 2801: 2012

* Antibacterial activity value (R) = (Ut-Uo) - (At-Uo) = Ut-At

Here, R: antimicrobial activity value

Uo: Average value of log value of viable cell count immediately after inoculation of non-processed test piece

Ut: Average value of log value of viable cell count after 24 hours of the non-processed test piece

At: average value of log value of viable cell count after 24 hours of antibacterial-treated test piece

Test strains: Escherichia coli ATCC 8739,

Staphylococcus aureus ATCC 6538p

* Non-processed test piece and coated film: Polystyrene bag for Stomacher 400 Sterile bag

As described above, the antimicrobial vinyl obtained by the production method and the production apparatus of the present invention exhibits not only the above-described test results but also much lower degradation of the activity of the strain than that of the control photograph, as can be clearly seen in the photograph of FIG. 12 transferred by the microscope In view of its superiority in antibacterial activity, it is expected to be useful in various fields of real life such as agriculture and food packaging.

10: input portion 11: hopper
20: Heat transferring screw (not shown)
30: Discharge part 31: Dispenser (cone type)
31a: Double wall
32: ring member 32-1: storage box
32a: hole
32b: Angle adjusting member 32c: Round
32d: hole
33: injection nozzle member 34: body
34a: Round 34b:
34c: Plate spring 34cc: Clutch
35: Distributor
40: embossing processor 50: corona processor
60: impregnating portion 70: winding portion

Claims (12)

delete delete delete delete delete An injection section equipped with a hopper into which a blend of polyethylene and an antimicrobial master batch for PE can be injected; A heating transfer unit including a heating device for heating the blend introduced into the hopper to form a viscous film and including a screw for transferring the film by rotational motion; A spraying portion for blowing the film (compound) in a viscous state in a cylindrical shape and spraying the antibacterial solution onto the surface of the blown film; An embossing processing unit in which a press roller is built in the plate so as to be embossed in a pressing manner with respect to the surface of the film; A corona treatment section composed of a ground roll so that a corona discharge can be performed on the embossed film, an insulator surrounding the ground roll, and a discharge electrode adjacent to the insulator; An impregnation inducing roller for inducing film impregnation so that the film subjected to the corona discharge treatment is impregnated with the antimicrobial solution; and a second impregnation guide roller provided on the right and left sides of the impregnation guide roller to smoothly guide the film before and after impregnation toward the impregnating guide roller An impregnating portion consisting of a proximity roller for separating or separating the antibacterial solution and a bucket containing the antibacterial solution; And a plurality of distribution rollers for winding each of the films divided from the coupling rollers, wherein the plurality of rollers are arranged in a stacked manner between the coupling rollers and the distribution rollers, A winding section further including a pair of cutting edges for cutting the film from both sides; Lt; / RTI >
Wherein the sprayer is provided with a conical sprayer whose diameter is increased from the bottom to the top so that the film (compound) can be blown in a cylindrical shape, and the sprayer has a double wall structure , And an injectable ring member is fastened between the double walls with the antibacterial solution stored therein. The method according to claim 6,
The ring member includes a plurality of holes provided with a plurality of angle adjusting members and jet nozzle members along the inner circumference of the ring member;
A storage box provided at one side of the ring member for storing the antibacterial solution;
And an antimicrobial agent. 8. The method of claim 7,
The angle adjuster may include an elliptical round formed on the inner wall of the hole.
A plurality of holes formed along the face of the round to maintain a constant gap;
Further comprising the step of: 8. The method of claim 7,
Wherein the injection nozzle member slides along the angle regulating member and adjusts the position of the injection point of the antibacterial liquid;
A plurality of spray tubes for spraying an antimicrobial liquid from one side of the body and controlling a spraying point distance of the antibacterial liquid;
Further comprising the step of: 10. The method of claim 9,
The body may include a round formed in a concave shape such that a bottom surface of the body slides along an angle adjusting member;
A bite that protrudes downward from the front and rear ends of the round so as to be slid on the round of the angle adjuster;
Wherein the body is inserted into the hole formed in the round portion of the angle adjusting member to fix the body in the sliding process of the body, spring;
Further comprising the step of: delete delete

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