KR100873645B1 - Shopping cart components having antibiotic and sterile functions and shopping cart having the same - Google Patents

Abstract

Shopping cart components having antibiotic and sterile functions and a shopping cart with the same are provided to supply the sterile function in material used in each component and have improved strength and transparency. A handle member includes base resin, nonosilver antimicrobial agent, antioxidant of 0.1 to 3 weight% range to the base resin, fluorine resin processing aid of 500 to 2000ppm range, and organic biocide from 0.01 to 3 weight% range to the base resin. The nanosilver antimicrobial agent is polymer carrier nanosilver antimicrobial agent of 500 to 2000ppm range, polymer carrier nanosilver antimicrobial agent from 1 to 500ppm and inorganic carrier nanosilver antimicrobial agent of 0.01 to 3 weight% range to the base resin.

Description

Shopping Cart Components Having Antibiotic and Sterile Functions and Shopping Cart Having the Same}

1 is a perspective view illustrating a general shopping cart.

Figure 2a is a view showing a photograph showing the test conditions after the initial (black) and 24 hours for Staphylococcus aureus and E. coli of Example 1 of the present invention.

FIG. 2B is a photograph showing a test state of black, 1 hour, 2 hours and 24 hours after the Staphylococcus aureus of Sample # 1 of Example 2 of the present invention.

FIG. 2C is a photograph showing a test state of black, 1 hour, 2 hours and 24 hours after the Staphylococcus aureus of Sample # 2 of Example 2 of the present invention.

FIG. 2D shows photographs showing test conditions of black, 1 hour, 2 hours, and 24 hours after E. coli of Sample # 1 of Example 2 of the present invention. FIG.

FIG. 2E is a photograph showing a test state of black, 1 hour, 2 hours and 24 hours after E. coli of Example # 2 of Example 2 of the present invention.

<Description of the symbols for the main parts of the drawings>

100: shopping cart 105: caster

110: frame 120: basket

130: line protecting member 140; Handle member

150; Baby Seat 160: Corner Protector

170: handle holder 180: cart lock member

The present invention relates to a shopping cart component having a sterilization function and a shopping cart having the same. More specifically, the present invention is a shopping cart having properties such as improved scratch resistance, impact resistance, transparency, color stability, and UV protection, as well as sterilization function to the material used as each component of the conventional shopping cart. It relates to a component and a shopping cart having the same.

In general, a push cart or a shopping cart refers to a transportation device widely used to transport cargo or purchase and transport various goods at large discount stores, department stores, airports and duty free stores.

The shopping cart has a variety of structures depending on the environment in which it is used, but generally has a configuration as shown in FIG.

1 is a perspective view illustrating a general shopping cart.

Referring to FIG. 1, a general shopping cart 100 may include a frame 110 having a caster 105 mounted below; A basket 120 mounted to the frame 110; Line protection member 130 on the basket 120; A handle member 140 provided on an upper portion of the basket 120; And a baby seat 150 provided inside the basket 120. In addition, the line protection member 130 includes a corner protection member 160 at both corner portions facing the handle member 140. In addition, the handle member 140 includes a handle holder 170 on both sides, and a cart lock member 180 is provided on a portion of the handle member 140.

Among the components constituting the shopping cart 100, a polyvinyl chloride (PVC) material is mainly used as the line protection member 130, and a polyvinyl chloride (PVC) or polycarbonate (PVC) is mainly used as the handle member 140. Polycarbonate (PC) material is used, and polypropylene (PP) material is mainly used as the baby seat 150 and the corner protection member 160, and the handle holder 170 and the cart lock member 180 are mainly nylon. (Nylon) material is used.

In general, shopping carts are frequently used by a large number of customers, so that they are infected with various bacteria and the hygiene is extremely poor, which seriously affects the health of customers. In particular, for children's customers who have low immunity to bacteria, each component of such a shopping cart is directly touched or even touched by the tongue, which poses a significant threat to health.

Meanwhile, a number of functional products having antimicrobial or bactericidal effects are recently sold using silver nanotechnology, and in particular, silver nanotechnology is used for home appliances such as washing machines and refrigerators, and functional fibers. The silver nanotechnology uses silver to break down silver (Ag) into nano-sized sizes, thereby increasing the surface area of silver to show strong antibacterial, bactericidal and deodorizing effects.

The above-described silver nanotechnology has been applied to a shopping cart, which is a technical field of the present invention, and in particular, the name of the invention "a shopping cart containing nano silver and incense", as of November 28, 2005, registered Korean Utility Model Application No. 20 Utility Model Registration No. 20-0408392 (hereinafter referred to as "Registration Proposal '392"), filed as No. 2005-0033544 and published and registered on February 2, 2006, includes metals, plastics, and synthetic resins, which are materials for shopping carts. The present invention discloses a functional shopping cart which adds nano silver and fragrance in powder or solution state to a material of a shopping cart made of rubber and silicone, to anti-sterilize and detox the shopping cart and generate far infrared rays or negative ions.

However, in the above-mentioned registration proposal '392, it is described as simply manufacturing a shopping cart by injection molding by adding or adding a certain range of nano silver powder or solution to the weight of the entire material of the shopping cart. The following problems occur.

First, when the nano silver powder or solution is blended or added to the material of the shopping cart by using the existing silver nanotechnology, heavy silver particles are collected or concentrated in one place or concentrated. Therefore, when injection molding the material of the shopping cart in which the nano silver powder or the solution is blended or added, the silver nano particles are not uniformly distributed throughout the material, for example, in the case of the shopping cart handle member 140, the handle member ( 140) not only does not exhibit a uniform antimicrobial effect throughout, but also does not exhibit a sufficient antimicrobial effect.

In addition, the silver particles are themselves opaque, and when injection molding the material of the shopping cart in which the nano silver powder or the solution is blended or added, the silver nano particles react with oxygen (O ₂ ) or ozone (O ₃ ), Bubbles are generated or discolored by the generation of black silver peroxide (Ag ₂ O ₂ ), for example, the handle member 140 of the shopping cart 100 is not transparent from the beginning or does not maintain transparency during use. The problem arises.

In addition, in addition to the handle member 140 when using the shopping cart 100, the basket 120, the line protection member 130, the baby seat 150, the corner protection member 160, the handle holder 170, which can be frequently contacted And a new shopping cart 100 having desirable physical properties such as antimicrobial resistance to at least one or more of the cartlock member 180.

The present invention is to solve the above-mentioned problems of the prior art, the cart component having a physical property such as improved strength and transparency, as well as sterilization function in the material used as each component of the conventional shopping cart and shopping with the same It is to provide a cart.

According to a first aspect of the present invention for achieving the above object, a handle member constituting a shopping cart, the composition of the handle member is a base resin; Silver nano antibacterial agent; Antioxidant in the range of about 0.1 to 3% by weight relative to the base resin; Fluorine resin processing aids ranging from approximately 500 to 2000 ppm; And an organic antimicrobial agent in a range of about 0.01 to 3% by weight relative to the base resin, wherein the silver nano antimicrobial agent comprises: a) a polymer carrier silver nano antimicrobial agent in a range of about 500 to 2000 ppm; Or b) a polymer carrier silver nano antibacterial agent in the range of about 1-500 ppm; And an inorganic carrier silver nano antimicrobial agent in the range of about 0.01 to 3% by weight relative to the base resin.

According to a second aspect of the invention, a handle holder constituting a shopping cart, the composition of the handle holder is a base resin; Silver nano antibacterial agent; And an antioxidant in a range of about 0.1 to 3% by weight relative to the base resin, wherein the silver nano antibacterial agent is a) a polymer carrier silver nano antimicrobial agent in a range of about 500 to 2000 ppm; Or b) a polymer carrier silver nano antibacterial agent in the range of about 1-500 ppm; And an inorganic carrier silver nano antimicrobial agent in the range of about 0.01 to 3% by weight relative to the base resin.

According to a third aspect of the invention, a cart lock member constituting a shopping cart, the composition of the cart lock member is a base resin; Silver nano antibacterial agent; And an antioxidant in a range of about 0.1 to 3% by weight relative to the base resin, wherein the silver nano antimicrobial agent comprises: a) a polymer carrier silver nano antimicrobial agent in a range of about 500 to 2000 ppm; Or b) a polymer carrier silver nano antibacterial agent in the range of about 1-500 ppm; And an inorganic carrier silver nano antibacterial agent in the range of about 0.01 to 3% by weight relative to the base resin.

According to a fourth aspect of the present invention, in the baby sheet constituting the shopping cart, the composition of the baby sheet is a base resin; An inorganic carrier silver nano antimicrobial agent in the range of about 0.01 to 3% by weight relative to the base resin; And an antioxidant in a range of about 0.1 to 3% by weight relative to the base resin, wherein the silver nano antimicrobial agent comprises: a) a polymer carrier silver nano antimicrobial agent in a range of about 500 to 2000 ppm; Or b) a polymer carrier silver nano antibacterial agent in the range of about 1-500 ppm; And an inorganic carrier silver nano antimicrobial agent in the range of about 0.01 to 3% by weight relative to the base resin.

According to a fifth aspect of the present invention, in the corner protection member constituting the shopping cart, the composition of the corner protection member is a base resin; Silver nano antibacterial agent; And an antioxidant in a range of about 0.1 to 3% by weight relative to the base resin, wherein the silver nano antimicrobial agent comprises: a) a polymer carrier silver nano antimicrobial agent in a range of about 500 to 2000 ppm; Or b) a polymer carrier silver nano antibacterial agent in the range of about 1-500 ppm; And an inorganic carrier silver nano antibacterial agent in the range of about 0.01 to 3% by weight relative to the base resin.

According to a sixth aspect of the present invention, in the line protection member constituting the shopping cart, the composition of the line protection member is a base resin; The silver nano antibacterial agent; Approximately 1.2% by weight of a plasticizer relative to the base resin used in the base resin; And a fluorine resin processing aid in the range of approximately 500 to 2000 ppm, wherein the silver nano antimicrobial agent comprises: a) a polymer carrier silver nano antimicrobial agent in the range of approximately 500 to 2000 ppm; Or b) a polymer carrier silver nano antibacterial agent in the range of about 1-500 ppm; And an inorganic carrier silver nano antimicrobial agent in the range of about 0.01 to 3% by weight relative to the base resin.

According to a seventh aspect of the invention, there is provided a shopping cart, comprising: a frame having a caster for movement mounted below; A basket mounted to the frame; A line protection member on the basket; A handle member provided on an upper portion of one side of the basket; And a baby seat provided inside the basket, wherein the line protection member has corner protection members at opposite corners facing the handle member, and the handle member has handle holders at both sides, and the handle member. A cart lock member is provided on a portion of the handle member, the handle member comprising: a first base resin; An inorganic carrier silver nano antimicrobial agent in a range of about 0.01 to 3% by weight relative to the first base resin; Antioxidant in the range of about 0.1 to 3% by weight relative to the first base resin; Fluorine resin processing aids ranging from approximately 500 to 2000 ppm; And about 0.01 to 3% by weight of an organic antimicrobial agent relative to the first base resin, wherein the handle holder comprises: a second base resin; An inorganic carrier silver nano antimicrobial agent in a range of about 0.01 to 3% by weight relative to the second base resin; And an antioxidant in a range of about 0.1 to 3% by weight relative to the second base resin, wherein the cartlock member comprises: a third base resin; An inorganic carrier silver nano antimicrobial agent in a range of about 0.01 to 3% by weight relative to the third base resin; And an antioxidant in a range of about 0.1 to 3% by weight relative to the third base resin, wherein the baby sheet comprises: a fourth base resin; An inorganic carrier silver nano antimicrobial agent in a range of about 0.01 to 3% by weight relative to the fourth base resin; And an antioxidant in a range of about 0.1 to 3% by weight relative to the fourth base resin, wherein the corner protection member comprises: a fifth base resin; Inorganic carrier silver nano antimicrobial agent in the range of about 0.01 to 3% by weight relative to the fifth base resin; And an antioxidant in a range of about 0.1 to 3% by weight relative to the fifth base resin, wherein the line protecting member comprises: a sixth base resin; An inorganic carrier silver nano antimicrobial agent in the range of about 0.01 to 3% by weight relative to the sixth base resin; About 1.2% by weight of a plasticizer compared to the sixth base resin used in the sixth base resin; And to provide a shopping cart comprising a fluorine resin processing aid in the range of approximately 500 to 2000ppm.

Further advantages of the present invention will become apparent from the following description with reference to the accompanying drawings in which like or like reference numerals designate like elements.

Hereinafter, with reference to the embodiments of the present invention and the accompanying drawings will be described in detail the present invention.

1. Handle member of the present invention

end. The manufacturing method of the handle member of this invention

In the present invention, transparency and impact resistance of the material of the handle member 140 (exactly the tube surrounding the outer surface of the handle member 140: hereinafter referred to as "handle member 140") of the shopping cart 100 in FIG. This excellent polycarbonate (PC) is used as the base resin. PC is a non-toxic engineering plastic material with superior heat resistance, transparency, impact resistance, cold resistance and durability compared to PVC. However, PC has hygroscopic properties, and when molding or processing water-containing PC, problems such as deterioration of transparency and physical properties and foaming may occur. Therefore, approximately 5 at a temperature of about 120 ° C. before molding It is preferable to remove moisture through a drying process for about a time.

In the present invention, in order to impart antimicrobiality, a PC masterbatch is prepared by mixing a silver nano solution of a predetermined amount of a polymer carrier with a PC resin. Regarding the amount of the silver nano solution of the polymer carrier, the applicant of the present application registered with the Republic of Korea Utility Model Application No. 20-2006-0009820 on April 12, 2006 under the name of the invention "antibacterial shopping cart handle tube and antimicrobial shopping cart with the same" Utility Model Registration No. 20-0424227 (hereinafter referred to as "Registration Utility Model '227"), filed as August 10, 2006, contains approximately 50 to 100 ppm of silver nanoparticles used to impart antimicrobial properties. The present invention discloses a twin screw extruder having two rotary shafts as a mixer for mixing the polymer carrier and the silver nanoparticles. The disclosure of the above-mentioned Registration Utility Model No. '227 is a part of the present invention with reference to the present specification.

On the other hand, in the preferred embodiment of the present invention, in order to further improve the antimicrobial function compared to the above-mentioned Utility Model No. '227 described above, the silver nano of the polymer carrier mixed in the PC resin is included in the range of approximately 500ppm to 2000ppm. Here, for example, 1000ppm means that when the weight of the handle member 140 is 1,000,000g, the weight of the silver nanoparticles including the polymer weight is 1000g. In addition, as the polymer used as the carrier of the present invention, an edible polymer is preferably polyvinylpyrrolidine. However, those skilled in the art will fully understand that any edible polymer other than polyvinylpyrrolidine may be used. In one embodiment of the present invention, after preparing a PC masterbatch containing 1000 ppm silver nano solution of a high molecular carrier, using a twin screw extruder for homogeneity and high dispersibility of the silver nano solution of the polymer carrier is approximately 200 ℃ to 240 ℃ At an elevated temperature of 30 kg per hour.

However, when the PC master batch is manufactured under the high-temperature extrusion conditions, the color becomes dark brown due to oxidation of silver nanoparticles, and the handle member 140 manufactured using the master batch is yellow or yellow as described below. Undesirable phenomena such as light brown may cause interference with the intrinsic color of the advertisement print provided in the handle member 140. Therefore, it is preferable to use a separate antioxidant to prevent oxidation of such silver nanoparticles. Antioxidant was used by mixing a hindered phenolic antioxidant and a thio compound antioxidant at about 1: 1. The amount of antioxidant is preferably in the range of about 0.1 to 3% by weight relative to the base resin.

Thereafter, the handle member 140 is extruded using the PC masterbatch manufactured by the above-described method. In this case, for example, 80% by weight of PC base resin and 20% by weight of PC masterbatch containing 1000 ppm of silver nanoparticles are blended, and 200 ppm of antibacterial handle is used in a tube-shaped mold using a single screw extruder. According to the size of the desired handle member 140 was processed using a known extrusion molding method.

I. Test example for antimicrobial activity of the handle member of the present invention

1) Test Example 1

In order to check the antimicrobial performance of the PC masterbatch prepared by mixing the silver nano solution of the polymer carrier of 1000ppm to the PC resin, which is used in the handle member 140 of the present invention manufactured in the manner described above as shown in Table 1 The test was carried out.

TABLE 1

Based on the test method of Table 1, based on the number of viable bacteria (Ma) immediately after inoculation of the test sample of the standard sample (PC master batch containing no antibacterial material) for strain 1 (yellow staphylococcus) and strain 2 (E. coli) The test results of comparing the antimicrobial water (Mb) after a predetermined time period of the standard sample and the viable bacterial count (Mc) after a predetermined time of the antimicrobial processed sample using the PC masterbatch of the present invention were obtained as shown in Table 2 below. . Here, the specific time is specifically 24 hours after the test bacteria inoculation.

TABLE 2

As can be seen in Table 2, for strain 1 (Staphylococcus aureus), when the Ma value is 2.6x10 ⁵ , the Mb value is significantly increased to 1.1x10 ⁷ after 24 hours, whereas the Mc value is 2.2x10 ⁴ after 24 hours. 99.8% reduced, it can be seen that the biological number of strain 1 is drastically reduced.

In addition, for strain 2 (E. coli), when the Ma value is 2.8x10 ⁵ , the Mb value is significantly increased to 1.1x10 ⁷ after 24 hours, while it decreases 99.8% to 2.2x10 ⁴ after 24 hours of Mc. It can be seen that the sharp decrease.

From the above results, it was proved that the PC masterbatch prepared by mixing the silver nano solution of the polymer carrier of 1000 ppm with the PC resin prepared according to Test Example 1 of the present invention had an antibacterial effect.

2) Test Example 2

In Test Example 2, the handle member 140 of the present invention was further performed on two samples (ie, Sample # 1 and Sample # 2) having the following two compositions to further increase the antibacterial performance to have sterilization or sterilization performance. The same test as in Example 1 was conducted.

a. Composition of Sample # 1 (% by weight of base resin)

ingredient ratio Inorganic Carrier Silver Nano Antibacterial Agent 1.5 wt% Organic antimicrobial agents Zinc pyrithione system 0.75 weight% + triclosan system 0.75 weight Polymer carrier silver nano antibacterial agent 50 ppm UV stabilizer Hindered amine compound 0.15% by weight + benzotriazole compound 0.15% by weight Antioxidant Hindered phenolic antioxidant 0.15% by weight + thio compound antioxidant 0.15% Processing aid Fluorine-based processing aid 1000 ppm

b. Composition of Sample # 2 (% by weight of base resin)

ingredient ratio Inorganic Carrier Silver Nano Antibacterial Agent 1.5 wt% Organic antimicrobial agents Isothiazolinone system 0.75% by weight + thibendazole system 0.75% by weight Polymer carrier silver nano antibacterial agent 50 ppm UV stabilizer 0.15 wt% of hindered amine compounds + 0.15 wt% of benzotriazole compounds Antioxidant Hindered phenolic antioxidant 0.15% by weight + thio compound antioxidant 0.15% Processing aid Fluorine-based processing aid 1000 ppm

In the samples # 1 and # 2 having the above-described composition, instead of reducing the polymer carrier silver nano antimicrobial agent to 50 ppm to further enhance the antimicrobial performance, the inorganic carrier silver nano antimicrobial agent and the organic antimicrobial agent, ultraviolet stabilizer, antioxidant, and processing aid as described below. Added.

In addition, the sample # 1 and the sample # 2 were tested on condition of the following Table 3.

TABLE 3

Based on the test conditions of Table 3 above, based on the number of live bacteria (Ma) immediately after inoculation of the test sample of the standard sample (PC master batch containing no antibacterial material) for strain 1 (yellow staphylococcus) and strain 2 (E. coli) As a result of comparing the antibacterial water (Mb) after a predetermined time of the standard sample and the viable bacteria (Mc) after a certain time of the antimicrobial processed sample using the PC masterbatch of the present invention, the results as shown in Table 2 were obtained. . Here, the specific time is specifically 1 hour, 2 hours and 24 hours after the test bacteria inoculation.

TABLE 4

As can be seen in Table 4, strain 1 case for (Staphylococcus aureus), the value Ma 2.4x10 ⁵ il Mb value was 4.4x10 ^5, 6.2x10 ^5, after 1 hour, 2 hours, and 24 hours and It can be seen that it is continuously increasing to 1.2x10 ⁷ . On the other hand, Mc values are 1.7x10 ⁵ (62.3% decrease), 3.6x10 ⁴ (94.2% decrease), and less than 10 (99.9% decrease) after 1 hour, 2 hours, and 24 hours for Sample # 1, respectively. For Sample # 2, the biomass of strain 1 was 1.8x10 ⁵ (58.2% decrease), 2.3x10 ⁴ (96.3% decrease), and 3.6x10 ⁴ (99.7% decrease) after 1, 2, and 24 hours, respectively. It can be seen that it is rapidly decreasing.

In addition, for strain 2 (E. coli), when the Ma value is 2.1x10 ⁵ , the Mb value is continuously increased to 2.9x10 ⁵ , 4.2x10 ⁵ , and 1.4x10 ⁷ after 1 hour, 2 hours, and 24 hours, respectively. Able to know. On the other hand, the values of Mc are 1.6x10 ⁵ (43.2% decrease), 2.5x10 ³ (99.4% decrease), and less than 10 (99.9% decrease) after 1 hour, 2 hours, and 24 hours for Sample # 1, respectively. , For sample # 2, 1.0x10 ⁵ (65.1% decrease), 7.9x10 ⁴ (81.2% decrease), and less than 10 (99.9% decrease) after 1, 2, and 24 hours, respectively. It can be seen that it is rapidly decreasing.

In particular, Test Example 2 of the present invention exhibited an antimicrobial effect of at least 81% by weight and at least 99.7% by weight after 2 hours against Staphylococcus aureus and Escherichia coli, which proves to have a substantially bactericidal or sterilizing effect. It became.

In addition, although the inorganic carrier silver nano antimicrobial agent was used in the above-mentioned Test Example 2, 1.5 wt%, in the preferred embodiment of the present invention, the carrier silver nano antimicrobial agent may be used in an amount of about 0.01 to 3 wt% based on the base resin. In addition, in the above Experimental Example 2, the polymer carrier silver nano antimicrobial agent was used at 50 ppm, but in the preferred embodiment of the present invention, the polymer carrier silver nano antimicrobial agent in the range of about 1 to 500 ppm may be used.

All. Other physical properties of the handle member of the present invention

As described above, in the present invention, the silver nano solution of the polymer carrier is contained within the range of 500 to 2000 ppm, or the polymer carrier as compared to the Utility Model '227, which is characterized by containing the silver nano solution of the inorganic carrier of 50 to 100 ppm. The silver nano solution of 50ppm and the additional inorganic carrier silver nano antimicrobial 1.5% by weight compared to the base resin and the addition of a range of organic antibacterial, ultraviolet stabilizer, antioxidant, and processing aid, the antimicrobial effect is high enough to have a sterilization or sterilization effect One can be expected enough. In addition, the antimicrobial effect of the silver nano antimicrobial solution has the advantage of being almost semi-permanent and persistent, but in order to implement a sterilization function to quickly reduce bacteria within 2 hours, a considerable amount of silver nano antimicrobial solution should be used. When using such a considerable amount of silver nano antibacterial solution, the cost increases, in particular, the disadvantage that the transparency and color stability of the final manufactured handle member 140 is lowered.

Therefore, in the present invention, it is preferable to mix the organic antimicrobial agent with the silver nano antimicrobial solution in consideration of economical efficiency and transparency and color stability of the handle member 140 while maintaining the above-described sterilizing effect.

1) Example 1

In Example 1, an organic antimicrobial agent is used an organic nitrogen-based compound antimicrobial agent usually applied to fibers. After preparing a compound mixed with 2% by weight of the organic nitrogen-based compound antimicrobial agent and 500ppm silver nano solution compared to the base resin, the handle member 140 of the present invention was manufactured by direct extrusion without dilution in order to maintain a strong sterilization effect. In the case of Example 1, the antimicrobial performance (sterilization performance) showed a high sterilizing power of 80% or more after 2 hours as a result of testing under the conditions as described in Table 3, the scratch of the appearance of the handle member 140 of the present invention And other physical properties of the handle member 140 of the present invention such as impact resistance and transparency are lowered. Thus, Example 1 containing only an organic antimicrobial agent is substantially the handle member 140 of the present invention. Not suitable for use as These results suggest that the organonitrogen-based compound antimicrobial agent was partially decomposed at 200 ° C. or higher during the preparation of the PC masterbatch, thereby degrading the physical properties of the PC.

2) Example 2

In Example 2, a separate composition was added to solve the problem of scratching and the problem of deterioration of impact resistance and transparency of Example 1.

First, scratch problems may occur as the PC resin contained in the PC masterbatch passes through a die during extrusion and may be caused by friction during use. In order to solve or improve this problem, a fluororesin processing aid was used, which makes the extrusion easier by the slip phenomenon in the die during the extrusion process and makes the extrusion surface smoother to increase the scratch resistance during use. The fluorine resin processing aid used in Example 2 of the present invention preferably uses approximately 500 to 2000 ppm. As a result, no scratch was generated during extrusion, and scratch resistance was improved even during use.

On the other hand, the organic antimicrobial agent used in the present invention in order to compensate for the degradation of other physical properties (impact resistance and transparency) of the handle member 140 of the present invention by decomposition of the organic antimicrobial agent zinc pyrithione (Zinc pyrithione) -based It may be any organic antimicrobial agent selected from the group consisting of an antimicrobial agent, a Tri-closan antimicrobial agent, a thiabendazole antimicrobial agent, and an isothiazolinone antimicrobial agent, or any combination thereof. The organic antimicrobial agent used in the present invention preferably has a range of about 0.01 to 3% by weight relative to the base resin.

In Example 2 of the present invention, the zinc pyrithione-based antimicrobial agent in the range of about 0.01 to 3% by weight relative to the base resin and the Tri-closan-based antimicrobial agent in the range of about 0.01 to 3% by weight relative to the base resin are mixed with 500 ppm of silver nano solution. To prepare a compound. In the case of the compound containing the specific organic antimicrobial agent, the antimicrobial performance (sterilization performance) was tested under the conditions shown in Table 3 above, and showed high sterilizing power of 80% or more after 2 hours, and at the same time, the properties of impact resistance and transparency No significant degradation was seen. Thus, the PC masterbatch containing the fluororesin processing aid and the specific organic antimicrobial agent according to Example 2 is suitable for use as the handle member 140 of the present invention in terms of physical properties for scratch, impact resistance and transparency.

3) Example 3

For Example 3 described above, PC masterbatches containing fluororesin processing aids and certain organic antimicrobial agents have been found to be suitable for use as the handle member 140 of the present invention with regard to physical properties for scratches, impact resistance and transparency. However, there is a possibility of discoloration due to ultraviolet rays or deterioration of transparency-related properties after long-term outdoor exposure.

Therefore, in the third embodiment of the present invention, the PC masterbatch according to the fourth embodiment of the present invention may further contain a sunscreen for effectively blocking ultraviolet rays in order to improve the problem that may be caused by ultraviolet exposure. As the sunscreen used in Example 3 of the present invention, a compound obtained by mixing a hindered amine compound and a benzotriazole compound in a ratio of about 1: 1 is preferable. In addition, the amount of the compound used as the sunscreen is preferably in the range of about 0.01 to 0.5% by weight relative to the base resin.

la. conclusion

In summary, Embodiments 1 to 3 described above, the composition of the handle member 140 of the present invention is a base resin; Polymer carrier silver nano antibacterial agents; Antioxidants in the range of about 0.1 to 3% by weight relative to the base resin (compounds in which the hindered phenol-based antioxidant and the thio-compound antioxidant are mixed in a ratio of about 1: 1); Fluorine resin processing aids ranging from approximately 500 to 2000 ppm; And an organic antimicrobial agent having a range of about 0.01 to 3% by weight relative to the base resin (specifically, zinc pyrithione antimicrobial agent, triclosan antimicrobial agent, thiabendazole antimicrobial agent, and Any organic antimicrobial agent selected from the group consisting of isothiazolinone antibacterial agents, or any combination thereof). Wherein the silver nano antimicrobial agent is 1) a polymer carrier silver nano antimicrobial agent in the range of approximately 500 to 2000 ppm; Or 2) a polymer carrier silver nano antibacterial agent in the range of about 1-500 ppm; And an inorganic carrier silver nano antibacterial agent in the range of about 0.01 to 3% by weight relative to the base resin.

Handle member 140 of the present invention having the above-described composition sufficiently satisfies the physical properties such as antibacterial or sterilization function, transparency, impact resistance and the like of a suitable level.

In addition, the composition of the handle member 140 of the present invention is about 0.01 to 0.5% by weight of the sunscreen (specifically, a hindered amine compound and a benzotriazole compound) Compound in a ratio of about 1: 1) to further prevent discoloration or deterioration of transparency-related physical properties due to prolonged ultraviolet exposure.

In addition, in the above-described embodiment of the present invention, although illustrated as using a PC as a resin material suitable for use in the handle member 140, this is illustrative and the scope of the present invention is not limited thereto. Resin materials suitable for use with handle members 140 other than PCs include acrylonitrile styrene (SAN), polyethylene terephthalate (PET), thermoplastic polyurethane (TPU), and poly (4-methyl 1-pentine) Transparent resins such as (4-methyl 1-pentene), polymethyl methacrylate (PMMA), polystyrene (PS), acrylonitrile butadiene styrene (ABS), and styrene butadiene copolymer (K-resin) Can be used.

2. Handle holder and cartlock member of the present invention

end. Method for manufacturing handle holder and cartlock member of the present invention

In the present invention, the base resin of the handle holder 170 and the cart lock member 180 to fix both ends of the handle member 140 of the shopping cart 100 in Figure 1 is mainly nylon resin, specifically nylon (chemical name) (Nylon (polyamide 6)) resin is used This nylon resin is an engineering plastic with high strength, chemical resistance, impact resistance, abrasion resistance, and heat resistance. Therefore, it is preferable to use it for about 5 hours after drying at a temperature of about 120 ℃ before processing.

In order to give antimicrobial performance to the handle holder 170 and the cart lock member 180 of the shopping cart 100 of the present invention, a nylon masterbatch in which a silver nano solution of a predetermined amount of a polymer carrier was mixed with a nylon resin was prepared. The predetermined amount of the silver nano solution of the polymer carrier used in the nylon masterbatch of the present invention is preferably about 500 ppm to 2000 ppm. In the embodiment of the present invention prepared nylon masterbatch containing 2000nm silver nano solution of inorganic carrier and then produced in an amount of 30kg per hour in the temperature range of approximately 200 ℃ to 260 ℃ using a twin screw extruder for high dispersibility It was. Since the handle holder 170 and the cart lock member 180 made of nylon may have colors such as blue, red, and orange, the handle holder 170 of the shopping cart 100 is different from the case of the handle member 140 described above. Otherwise it is not necessary to meet the transparency requirements. Therefore, it is possible to concentrate and use the silver nano solution of a polymer carrier to 2000 ppm. Alternatively, silver nano solutions of the polymer carrier in the range of about 1 to 500 ppm and silver nano solutions of the inorganic carrier in the range of about 0.01 to 3% by weight relative to the base resin may be used to impart antimicrobial performance.

However, when the nylon masterbatch is manufactured under the above-described high-temperature extrusion conditions, the color becomes dark brown due to oxidation of silver nanoparticles, and the handle holder 170 and the cart manufactured using the nylon masterbatch as described below. An undesirable phenomenon may occur in which the lock member 180 is yellow or light brown. Therefore, it is preferable to use a separate antioxidant to prevent oxidation of such silver nanoparticles. Antioxidant was used by mixing a hindered phenolic antioxidant and a thio compound antioxidant at about 1: 1. The amount of antioxidant is preferably in the range of about 0.1 to 3% by weight relative to the base resin.

The nylon masterbatch prepared by the above-described method was injected by using a conventional injection molding machine so as to be 200ppm by blending a conventional nylon resin 90% by weight and 2000ppm antibacterial masterbatch 10% by weight.

I. Antimicrobial activity of the handle holder and the cartlock member of the present invention

In order to confirm the antimicrobial performance of the nylon masterbatch prepared by mixing the silver nano solution of 2000ppm polymer carrier with nylon resin, which is used in the handle holder 170 and the cartlock member 180 of the present invention manufactured in the above-described manner The test was performed on the same conditions as the case of the handle member 140 of the shopping cart 100 mentioned above.

The test results showed that the nylon masterbatch had an antimicrobial effect of E. coli and Staphylococcus aureus, approximately 80 to 90% by weight after 2 hours, and approximately 99.9% by weight after 24 hours, thereby having a substantially bactericidal or sterilizing effect. .

All. Other Physical Properties of Handle Holder and Cartlock Member of the Present Invention

As described above, in the present invention, it was confirmed that the nylon masterbatch has a sufficient antibacterial or bactericidal effect.

However, since the nylon used as the material of the handle holder 170 and the cart lock member 180 of the present invention typically uses colors such as blue, red, and orange, sterilization function for reducing bacteria in a short time is provided. In order to implement, a considerable amount of silver nano antibacterial solution (in the range of 500 to 2000 ppm in the present invention) should be used. In the case of using such a significant amount of silver nano antibacterial solution, the cost increases, and in particular, there is a disadvantage that the color stability of the final manufactured handle holder 170 and the cart lock member 180 is lowered.

Therefore, in the present invention, it is preferable to mix the organic antimicrobial agent with the silver nano antimicrobial solution in consideration of economical efficiency and color stability of the manufactured handle holder 170 and the cartlock member 180 while maintaining the above-described sterilizing effect.

1) Example 4

In Example 4, in consideration of the economics and color stability of the handle holder 170 and the cartlock member 180 of the present invention, the organic antimicrobial agent may use a thiabendazole-based antimicrobial agent most suitable for nylon resin. More specifically, in Example 4 of the present invention, an organic antimicrobial agent has a thiabendazole-based antimicrobial agent, a zinc pyrithione-based antimicrobial agent, and triclosan (Tri-) in an amount of about 0.01 to 3% by weight relative to the base resin. any organic antibacterial agent selected from the group consisting of a closan) antibacterial agent, and an isothiazolinone antibacterial agent, or any combination thereof may be used. After preparing a compound in which the organic antimicrobial agent in the range of about 0.01 to 3% by weight is mixed with a silver nano solution of a polymer carrier of 500 ppm, the handle holder 170 of the present invention is directly injected without dilution to maintain a strong sterilization effect. And the cartlock member 180 was manufactured. In the case of Example 4, the antimicrobial performance or sterilization performance showed a high sterilization power of 80% by weight or more after 2 hours as tested under the conditions as described in Table 3 related to the handle member 140, but also a large decrease in other physical properties Did not do it. Thus, Example 4 containing only an organic antimicrobial agent is substantially suitable for use as the handle holder 170 and the cartlock member 180 of the present invention.

2) Example 5

In the case of Example 4 described above, it was found that the nylon masterbatch containing the specific organic antimicrobial agent is suitable for use as the handle holder 170 and the cartlock member 180 of the present invention with respect to the antimicrobial properties, but for a long time There is a possibility that degradation of physical properties such as discoloration due to ultraviolet rays occurs during outdoor exposure.

Therefore, in Example 5 of the present invention, the nylon masterbatch according to Example 5 of the present invention may further contain a sunscreen for effectively blocking ultraviolet rays in order to improve the problems that may be caused by ultraviolet exposure. As the sunscreen used in Example 5 of the present invention, a compound obtained by mixing a hindered amine compound and a benzotriazole compound in a ratio of about 1: 1 is preferable. In addition, the amount of the compound used as the sunscreen is preferably in the range of about 0.01 to 0.5% by weight relative to the base resin.

la. conclusion

Summarizing the above-described embodiments 4 and 5, the composition suitable for use in the handle holder 170 and the cartlock member 180 of the present invention is a base resin; And silver nano antibacterial agents; And an antioxidant in the range of about 0.1 to 3% by weight relative to the base resin (specifically, a compound in which a hindered phenol-based antioxidant and a thio-compound antioxidant are mixed at about 1: 1). Wherein the silver nano antimicrobial agent is 1) a polymer carrier silver nano antimicrobial agent in the range of approximately 500 to 2000 ppm; Or 2) a polymer carrier silver nano antibacterial agent in the range of about 1-500 ppm; And an inorganic carrier silver nano antibacterial agent in the range of about 0.01 to 3% by weight relative to the base resin.

In addition, the composition of the handle holder 170 and the cart lock member 180 of the present invention is in the range of 0.01 to 3% by weight of the organic antimicrobial agent (specifically, thiabendazole) for economical and color stability Any organic antimicrobial agent selected from the group consisting of an antimicrobial agent, a zinc pyrithione antimicrobial agent, a tri-closan antimicrobial agent, and an isothiazolinone antimicrobial agent, or any combination thereof) It can be included as.

In addition, the handle holder 170 and the cart lock member 180 composition of the present invention is in the range of about 0.01 to 0.5% by weight of the sunscreen (specifically, Hindered amine) compared to the base resin to effectively block ultraviolet rays Compound comprising a benzotriazole compound and a benzotriazole compound in a ratio of about 1: 1.

Furthermore, in the above-described embodiment of the present invention, the use of nylon (polyamide 6) resin as the base resin material suitable for use in the handle holder 170 and the cartlock member 180 is illustrated. The scope of the present invention is not limited thereto. Resin such as polyacetal (POM) and polybutylene terephthalate (PBT) may be used as the base resin material suitable for use in the handle holder 170 and the cartlock member 180 other than the nylon (polyamide 6) resin. have.

3. Baby seat and corner protection member of the present invention

end. Method for manufacturing baby seat and corner protection member of the present invention

In the present invention, the base resin of the baby seat 150 and the corner protection member 160 of the shopping cart 100 in Figure 1 mainly uses polypropylene (PP: polypropylene). Such PP is a polyolefin-based thermoplastic resin excellent in high strength, chemical resistance and heat resistance. PP has a melting point of 160 ° C, which is lower than that of engineering plastics such as nylon or polycarbonate (PC), and has almost no hygroscopic properties. Therefore, no separate drying process is required.

In order to impart antimicrobial performance to the baby seat 150 and the corner protection member 160 of the shopping cart 100 of the present invention, a PP masterbatch in which a silver nano solution of a predetermined amount of a polymer carrier was mixed with PP was prepared. The predetermined amount of the silver nano solution of the polymer carrier used in the PP masterbatch of the present invention is preferably about 500 ppm to 2000 ppm. In the embodiment of the present invention, a PP masterbatch containing 2000 nanometer silver nano solution of an inorganic carrier was prepared and then produced in an amount of 30 kg per hour in a temperature range of approximately 200 ° C. to 260 ° C. using a twin screw extruder for high dispersibility. It was. The baby seat 150 and the corner protection member 160 made of PP material may have colors such as blue, red, and orange colors, and thus, unlike the case of the handle member 140 of the shopping cart 100 described above, transparency There is no need to meet the conditions. Therefore, it is possible to concentrate and use the silver nano solution of a polymer carrier to 2000 ppm. Alternatively, silver nano solutions of the polymer carrier in the range of about 1 to 500 ppm and silver nano solutions of the inorganic carrier in the range of about 0.01 to 3% by weight relative to the base resin may be used to impart antimicrobial performance.

However, when the PP masterbatch is manufactured under the above-described high-temperature extrusion conditions, the color becomes dark brown due to oxidation of silver nanoparticles, and the baby seat 150 and the corner manufactured using the PP masterbatch as described below. Undesirable phenomenon may occur in which the protective member 160 is yellow or light brown. Therefore, it is preferable to use a separate antioxidant to prevent oxidation of such silver nanoparticles. Antioxidant was used by mixing a hindered phenolic antioxidant and a thio compound antioxidant at about 1: 1. The amount of antioxidant is preferably in the range of about 0.1 to 3% by weight relative to the base resin.

The baby seat and the corner protection member were injected using a conventional injection molding machine to blend 200 wt% of a normal PP resin and 10 wt% of a PP masterbatch (2000ppm) prepared by the above-described method.

I. Antimicrobial Activity of Baby Seat and Corner Protector of the Present Invention

In order to confirm the antimicrobial performance of the nylon masterbatch prepared by mixing the silver nano solution of 2000ppm polymer carrier with PP resin, which is used in the baby seat 150 and the corner protection member 160 of the present invention manufactured in the above-described manner. The test was performed on the same conditions as the case of the handle member 140 of the shopping cart 100 mentioned above.

Test results show that the PP masterbatch has an antimicrobial effect of approximately 80 to 90% by weight and approximately 99.9% after 24 hours to E. coli and Staphylococcus aureus, thereby having a substantially bactericidal or sterilizing effect. .

All. Other Physical Properties of Baby Seat and Corner Protector of the Present Invention

As described above, in the present invention, it was confirmed that the PP masterbatch has a sufficient antibacterial or bactericidal effect.

However, since PP used as a material of the baby seat 150 and the corner protection member 160 of the present invention typically uses colors such as blue, red, and orange, sterilization function for reducing bacteria in a short time. In order to implement a significant amount of silver nano antibacterial solution (in the case of the present invention 500 to 2000ppm range) should be used. In the case of using such a significant amount of silver nano antibacterial solution, the cost rises, and in particular, there is a disadvantage in that the color stability of the final manufactured handle baby seat 150 and the corner protection member 160 is lowered.

Therefore, in the present invention, it is preferable to mix the organic antimicrobial agent with the silver nano antibacterial solution in consideration of economical efficiency and color stability of the manufactured baby seat 150 and the corner protection member 160 while maintaining the above-described disinfection effect.

1) Example 6

In Example 6, in consideration of the economical efficiency and color stability of the baby seat 150 and the corner protection member 160 of the present invention, the organic antimicrobial agent may use a thiabendazole-based antimicrobial agent most suitable for nylon resin. More specifically, in Example 6 of the present invention, the organic antimicrobial agent is in the range of about 0.01 to 3% by weight of a thibendazole-based antimicrobial agent, zinc pyrithione-based antimicrobial agent, and triclosan (Tri-). any organic antibacterial agent selected from the group consisting of a closan) antibacterial agent, and an isothiazolinone antibacterial agent, or any combination thereof may be used. After preparing a compound in which the organic antimicrobial agent in the range of about 0.01 to 3% by weight relative to the base resin described above is mixed with the silver nano antimicrobial agent and the about 1 to 500 ppm polymer carrier silver nano antimicrobial agent of about 0.01 to 3% by weight of the inorganic carrier, In order to maintain the bactericidal effect, direct injection without dilution produced the baby seat 150 and the corner protection member 160 of the present invention. In the case of Example 5, the antimicrobial performance or sterilization performance was tested under the conditions as described in Table 3 relating to the handle member 140 described above showed a high sterilization power of 80% by weight or more after 2 hours, but also a large decrease in other physical properties Did not do it. Therefore, Example 5 containing only an organic antimicrobial agent is substantially suitable for use as the baby seat 150 and the corner protection member 160 of the present invention.

2) Example 7

In the case of Example 6 described above, the PP masterbatch containing the specific organic antimicrobial agent was found to be suitable for use as the baby seat 150 and the corner protection member 160 of the present invention with respect to the antimicrobial properties, but for a long time There is a possibility that degradation of physical properties such as discoloration due to ultraviolet rays occurs during outdoor exposure.

Therefore, in Example 7, the PP masterbatch according to Example 7 of the present invention may further contain a sunscreen for effectively blocking ultraviolet rays in order to improve a problem that may be caused by ultraviolet exposure. The sunscreen used in Example 7 of the present invention is preferably a compound in which a hindered amine compound and a benzotriazole compound are mixed at approximately 1: 1. In addition, the amount of the compound used as the sunscreen is preferably in the range of about 0.01 to 0.5% by weight.

la. conclusion

Summarizing the above-described embodiments 6 and 7, the composition suitable for use in the baby seat 150 and the corner protection member 160 of the present invention is a base resin; Silver nano antibacterial agent; And about 0.01 to 0.5% by weight of an antioxidant (specifically, a compound in which a hindered phenol-based antioxidant and a thio-compound antioxidant are mixed in a 1: 1 ratio). Here, the silver nano antimicrobial agent is 1) a polymer carrier silver nano antimicrobial agent in the range of approximately 500 to 2000 ppm; Or 2) a polymer carrier silver nano antibacterial agent in the range of about 1-500 ppm; And an inorganic carrier silver nano antibacterial agent in the range of about 0.01 to 3% by weight relative to the base resin.

In addition, the composition of the baby seat 150 and the corner protection member 160 of the present invention is in the range of about 0.01 to 3% by weight of the organic antimicrobial agent (specifically, thiabendazole) for the economy and color stability Any organic antimicrobial agent selected from the group consisting of an antimicrobial agent, a zinc pyrithione antimicrobial agent, a tri-closan antimicrobial agent, and an isothiazolinone antimicrobial agent, or any combination thereof. It may further comprise.

In addition, the composition of the baby seat 150 and the corner protection member 160 of the present invention is in the range of about 0.01 to 0.5% by weight of the sunscreen (specifically, Hindered amine compared to the base resin to effectively block ultraviolet rays) ) Compound and benzotriazole (Benzotriazole) compound in a 1: 1 mixture] may be further included.

Furthermore, in the above-described embodiment of the present invention, the base resin suitable for use in the baby seat 150 and the corner protection member 160 is illustrated as PP, but this is illustrative and the scope of the present invention is limited thereto. It is not. Suitable materials for use in baby seats 150 and corner protectors 160 other than PP include polyethylene (PE), polycarbonate (PC), thermoplastic polyurethane (TPU), polymethylmethacrylate (PMMA), and polystyrene Resins such as (PS) and acrylonitrile budadiene styrene (ABS) may be used.

4. Line protection member of the present invention

end. Method for producing line protection member of the present invention

In the present invention, the base resin of the line protection member 130 of the shopping cart 100 in Figure 1 mainly uses PVC (Poly vinyl chloride). Such PVC can adjust the hardness according to the amount of plasticizer (plasticizer) can be produced in a soft and hard, excellent chemical resistance, flame retardant. Plasticizers used in PVC make plastics soft (soft and flexible). Plasticizers are low-molecular weight substances that migrate to plastic surfaces, blocking silver nanoparticles or organic antimicrobial particles from the surface and acting as an obstacle to antibacterial activity. Therefore, in the case of the PVC material used as the line protection member 130 of the present invention, it is preferable to reduce the amount of plasticizer and increase the content of the antimicrobial agent. More specifically, the plasticizer used in the PVC resin of the present invention is di-iso-nonylphthalate (DINP: Di-iso-nonylphthalate) is used, the base instead of about 2% by weight compared to the base resin which is conventionally commonly used content Approximately 1.2% by weight of resin was used.

However, if the amount of plasticizer is reduced as described above, there is a disadvantage in that the extrusion appearance is rough and the extrusion flux drops. In order to compensate for the problem of extrusion and extrusion flux, a fluorine resin processing aid in the range of approximately 500 to 2000 ppm was used.

On the other hand, PVC is a plasticizer, a heat stabilizer, an inorganic filler (filler), and a pigment in a PVC resin is added to a high speed stirrer and stirred until it rises to a temperature of approximately 120 ℃ and then transferred to an extruder to perform an extrusion process. In this high-speed stirring, a silver nano antibacterial agent, an organic antibacterial agent, a fluorine resin processing aid, and an antioxidant and a sunscreen described later are added together and stirred.

I. Antimicrobial activity of the line protective member of the present invention

The fluororesin processing aid in the range of about 500 to 2000 ppm is used while using about 1.2% by weight of plasticizer DINP compared to the base resin, which is used in the line protection member 130 of the present invention manufactured in the above-described manner. To ensure optimum appearance quality and processability while maintaining antibacterial or antiseptic performance. More specifically, the above-described shopping to confirm the antibacterial performance of the PVC masterbatch prepared by mixing approximately 1.2% by weight of DINP plasticizer and 1000ppm fluorine resin processing aid compared to the base resin, and also by mixing 2000nm of silver nano solution of a polymer carrier The test was performed on the same conditions as the case of the knob member 140 of the cart 100.

Test results showed that the PVC masterbatch had an antimicrobial effect of approximately 80 to 90% by weight and approximately 99.9% after 24 hours to E. coli and Staphylococcus aureus, thereby having a substantially bactericidal or sterilizing effect. .

In addition, although the silver nano solution of 2000 ppm of the polymer carrier was used in the above-described antimicrobial related test, those skilled in the art will fully understand that the polymer carrier silver nano antimicrobial agent in the range of approximately 500 to 2000 ppm may be used. Alternatively, the silver nano antimicrobial agent may be a polymer carrier silver nano antimicrobial agent in the range of about 1 to 500 ppm and an inorganic carrier silver nano antimicrobial agent in the range of about 0.01 to 3% by weight relative to the base resin.

All. Other physical properties of the line protection member of the present invention

As described above, in the present invention, it was confirmed that the PVC masterbatch has a sufficient antibacterial or bactericidal effect.

However, in order to implement a bactericidal function for reducing bacteria in a short time, a considerable amount of silver nano antibacterial solution (in the case of the present invention, 500 to 2000 ppm) should be used. In the case of using such a significant amount of silver nano antibacterial solution, the cost increases, in particular, the disadvantage that the color stability of the final line protection member 130 of the present invention is lowered.

Therefore, in the present invention, it is preferable to mix the organic antimicrobial agent with the inorganic carrier silver nano antimicrobial agent in consideration of economical efficiency and color stability of the manufactured line protection member 130 while maintaining the above-described bactericidal effect.

1) Example 8

In Example 8, in consideration of the economical efficiency and color stability of the line protection member 130 of the present invention, the organic antimicrobial agent may use a thiabendazole-based antimicrobial agent most suitable for PVC resin. More specifically, in Example 8 of the present invention, an organic antimicrobial agent, about thiabendazole-based antimicrobial agent, zinc pyrithione-based antimicrobial agent, and triclosan (Tri-) in an amount of about 0.01 to 3% by weight relative to the base resin any organic antibacterial agent selected from the group consisting of a closan) antibacterial agent, and an isothiazolinone antibacterial agent, or any combination thereof may be used. After preparing a compound in which the organic antimicrobial agent in the range of about 0.01 to 3% by weight relative to the base resin described above is mixed with the silver nano antibacterial agent of the inorganic carrier to about 0.01 to 3% by weight relative to the base resin, the compound is not diluted to maintain a strong sterilizing effect. Direct injection was produced to the line protection member 130 of the present invention. In the case of Example 8, the antibacterial or sterilization performance was tested under the conditions as described in Table 3 relating to the handle member 140 described above, but showed high sterilization power of 80% by weight or more after 2 hours, but no significant degradation of other physical properties occurred. Did. Therefore, Example 8 containing an organic antimicrobial agent and an inorganic carrier silver nanoantimicrobial agent is substantially suitable for use as the line protecting member 130 of the present invention.

2) Example 9

In the case of Example 6 described above, the PVC masterbatch containing the specific organic antimicrobial agent was found to be suitable for use as the line protection member 130 of the present invention with respect to the antimicrobial properties, There is a possibility that degradation of physical properties such as discoloration occurs.

Therefore, in the ninth embodiment of the present invention, the PVC compound according to the ninth embodiment of the present invention may further contain a sunscreen for effectively blocking ultraviolet rays in order to improve the problems that may be caused by the ultraviolet exposure. As the sunscreen used in Example 9 of the present invention, a compound obtained by mixing a hindered amine compound and a benzotriazole compound in a ratio of about 1: 1 is preferable. In addition, the amount of the compound used as the sunscreen is preferably in the range of about 0.01 to 0.5% by weight.

la. conclusion

In summary, with the above-described embodiments 8 and 9, the composition suitable for use in the line protection member 130 of the present invention is approximately a base resin; Silver nano antibacterial agent; Approximately 1.2% by weight plasticizer (specifically DINP) relative to base resin; And fluorine resin processing aids in the range of approximately 500 to 2000 ppm. Here, the silver nano antimicrobial agent is 1) a polymer carrier silver nano antimicrobial agent in the range of approximately 500 to 2000 ppm; Or 2) a polymer carrier silver nano antibacterial agent in the range of about 1-500 ppm; And an inorganic carrier silver nano antibacterial agent in the range of about 0.01 to 3% by weight relative to the base resin.

In addition, the composition of the line protection member 130 of the present invention is in the range of about 0.01 to 3% by weight of the organic antimicrobial agent (specifically, thiabendazole-based antimicrobial agent, zinc pyritch) for economical and color stability. Zinc pyrithione-based antimicrobial agent, Tri-closan-based antimicrobial agent, and isothiazolinone antimicrobial agent, any organic antimicrobial agent selected from the group consisting of, or any combination thereof) may be further included. .

Furthermore, the composition of the line protection member 130 of the present invention is a sunscreen (specifically, a hindered amine compound and benzotria) in an amount of about 0.01 to 0.5% by weight relative to the base resin in order to effectively block ultraviolet rays. Sol (Benzotriazole) compound in a 1: 1 mixture) may be further included.

In addition, in the above-described embodiment of the present invention, the base resin suitable for use in the line protection member 130 is illustrated as being PVC, but this is illustrative and the scope of the present invention is not limited thereto. Suitable materials for use in the line protection member 130 other than PVC include resins such as polypropylene (PP), polyethylene (PE), thermoplastic polyurethane (TPU), and acrylonitrile budadiene styrene (ABS). Can be.

As described above, the shopping cart component having a sterilizing function and the shopping cart having the same according to the present invention not only have a remarkably improved antimicrobial or sterilizing effect, but also other scratch resistance, impact resistance, Physical properties such as transparency, color stability, and ultraviolet ray blocking properties are remarkably improved.

In addition, unlike the prior art, since most of the components of the shopping cart have a markedly improved antibacterial or antiseptic effect, the advantage of ensuring the health and hygiene of the customer is achieved.

Although the present invention has been described with reference to the accompanying drawings and examples, these are exemplary, and those skilled in the art may devise various modifications and equivalent embodiments therefrom, such equivalent embodiments. It is also very natural that it should be seen as included within the claims of the present invention. Therefore, the true scope of protection of the present invention should be determined only by the appended claims.

Claims (44)

In the handle member which comprises a shopping cart, The composition of the handle member Base resins; Silver nano antibacterial agent; Antioxidant in the range of 0.1 to 3% by weight relative to the base resin; Fluorine resin processing aids in the range of 500-2000 ppm; And Organic antibacterial agent in the range of 0.01 to 3% by weight relative to the base resin Including, The silver nano antimicrobial agent a) a polymer carrier silver nano antimicrobial agent in the range of 500 to 2000 ppm; Or b) a polymer carrier silver nano antibacterial agent in the range of 1 to 500 ppm; And an inorganic carrier silver nano antimicrobial agent in the range of 0.01 to 3% by weight relative to the base resin. Handle member. The method of claim 1, The antioxidant is a compound in which a hindered phenol-based antioxidant and a thio compound-based antioxidant are mixed 1: 1. The organic antimicrobial agent is an organic antimicrobial agent selected from the group consisting of zinc pyrithione antimicrobial agents, tri-closan antimicrobials, thiabendazole antimicrobials, and isothiazolinone antimicrobials, Or a combination thereof Handle member. The method according to claim 1 or 2, The handle member is a handle member further comprises a sunscreen in the range of 0.01 to 0.5% by weight relative to the base resin. The method of claim 3, wherein The sunscreen is a handle member is a compound in which a hindered amine compound and a benzotriazole compound are mixed 1: 1. The method according to claim 1 or 2, The base resin is polycarbonate (PC), acrylonitrile styrene (SAN), polyethylene terephthalate (PET), thermoplastic polyurethane (TPU), poly (4-methyl 1-pentine) (Poly (4-methyl 1- pentene), polymethyl methacrylate (PMMA), polystyrene (PS), acrylonitrile butadiene styrene (ABS) and styrene butadiene copolymer (K-resin). The method of claim 3, wherein The base resin is polycarbonate (PC), acrylonitrile styrene (SAN), polyethylene terephthalate (PET), thermoplastic polyurethane (TPU), poly (4-methyl 1-pentine) (Poly (4-methyl 1- pentene), polymethyl methacrylate (PMMA), polystyrene (PS), acrylonitrile butadiene styrene (ABS) and styrene butadiene copolymer (K-resin). The method of claim 4, wherein The base resin is polycarbonate (PC), acrylonitrile styrene (SAN), polyethylene terephthalate (PET), thermoplastic polyurethane (TPU), poly (4-methyl 1-pentine) (Poly (4-methyl 1- pentene), polymethyl methacrylate (PMMA), polystyrene (PS), acrylonitrile butadiene styrene (ABS) and styrene butadiene copolymer (K-resin). In the handle holder constituting the shopping cart, The composition of the handle holder Base resins; Silver nano antibacterial agent; And Antioxidant in the range of 0.1 to 3% by weight relative to the base resin Including, The silver nano antimicrobial agent a) a polymer carrier silver nano antimicrobial agent in the range of 500 to 2000 ppm; Or b) a polymer carrier silver nano antibacterial agent in the range of 1 to 500 ppm; And an inorganic carrier silver nano antimicrobial agent in the range of 0.01 to 3% by weight relative to the base resin. Handle holder. The method of claim 8, The handle holder is a handle holder further comprises an organic antimicrobial agent in the range of 0.01 to 3% by weight relative to the base resin. The method of claim 9, The handle holder is a handle holder further comprises a sunscreen in the range of 0.01 to 0.5% by weight relative to the base resin. The method of claim 8, A handle holder of the antioxidant is a compound in which a hindered phenol-based antioxidant and a thio-compound antioxidant are mixed in a 1: 1 ratio. The method of claim 9, The organic antimicrobial agent is selected from the group consisting of zinc pyrithione antimicrobial agent, tri-closan antimicrobial agent, thiabendazole antimicrobial agent, and isothiazolinone antimicrobial agent, Or a handle holder thereof. The method of claim 10, The sunscreen is a handle holder that is a compound of a hindered amine compound and a benzotriazole compound in a 1: 1 mixture. The method according to any one of claims 8 to 13, A handle holder wherein the base resin is any one of nylon (polyamide 6), polyacetal (POM), and polybutylene terephthalate (PBT). In the cart rack member which comprises a shopping cart, The composition of the cart rack member Base resins; Silver nano antibacterial agent; And Antioxidant in the range of 0.1 to 3% by weight relative to the base resin Including, The silver nano antimicrobial agent is a) 500 to 2000 ppm of the range of the polymer carrier silver nano antimicrobial agent; Or b) a polymer carrier silver nano antibacterial agent in the range of 1 to 500 ppm; And an inorganic carrier silver nano antimicrobial agent in the range of 0.01 to 3% by weight relative to the base resin. Absence of cartlock. The method of claim 15, The cartlock member further comprises an organic antimicrobial agent in the range of 0.01 to 3% by weight relative to the base resin. The method of claim 16, The cartlock member further comprises a sunscreen agent in the range of 0.01 to 0.5% by weight relative to the base resin. The method of claim 15, The cartact member is a compound in which the antioxidant is a mixture of a hindered phenol-based antioxidant and a thio-compound antioxidant in a 1: 1 ratio. The method of claim 16, The organic antimicrobial agent is selected from the group consisting of zinc pyrithione antimicrobial agent, tri-closan antimicrobial agent, thiabendazole antimicrobial agent, and isothiazolinone antimicrobial agent, Or a cartlock member which is a combination thereof. The method of claim 17, The sunscreen agent is a cartrak member is a compound in which a hindered amine compound and a benzotriazole compound in a 1: 1 mixture. The method according to any one of claims 15 to 20, And the base resin is any one of nylon (polyamide 6), polyacetal (POM), and polybutylene terephthalate (PBT). In the baby seat constituting the shopping cart, The composition of the baby sheet Base resins; Inorganic carrier silver nano antimicrobial agent in the range of 0.01 to 3% by weight relative to the base resin; And Antioxidant in the range of 0.1 to 3% by weight relative to the base resin Including, The silver nano antimicrobial agent is a) 500 to 2000 ppm of the range of the polymer carrier silver nano antimicrobial agent; Or b) a polymer carrier silver nano antibacterial agent in the range of 1 to 500 ppm; And an inorganic carrier silver nano antimicrobial agent in the range of 0.01 to 3% by weight relative to the base resin. Baby seat. The method of claim 22, The baby sheet is a baby sheet further comprises an organic antimicrobial agent in the range of 0.01 to 3% by weight relative to the base resin. The method of claim 23, wherein The baby sheet further comprises a sunscreen in the range of 0.01 to 0.5% by weight relative to the base resin. The method of claim 22, The baby seat is a compound in which the antioxidant is a mixture of a hindered phenol-based antioxidant and a thio compound-based antioxidant in a 1: 1 ratio. The method of claim 23, wherein The organic antimicrobial agent is selected from the group consisting of zinc pyrithione antimicrobial agent, tri-closan antimicrobial agent, thiabendazole antimicrobial agent, and isothiazolinone antimicrobial agent, Or a baby sheet in combination thereof. The method of claim 24, The sunscreen is a baby seat that is a compound in which a hindered amine compound and a benzotriazole compound are mixed 1: 1. The method according to any one of claims 22 to 27, The base resin is polypropylene (PP), polyethylene (PE), polycarbonate (PC), thermoplastic polyurethane (TPU), polymethyl methacrylate (PMMA), polystyrene (PS), acrylonitrile budadiene styrene One of the (ABS) baby seat. In the corner protection member constituting the shopping cart, The composition of the corner protection member Base resins; Silver nano antibacterial agent; And Antioxidant in the range of 0.1 to 3% by weight relative to the base resin Including, The silver nano antimicrobial agent is a) 500 to 2000 ppm of the range of the polymer carrier silver nano antimicrobial agent; Or b) a polymer carrier silver nano antibacterial agent in the range of 1 to 500 ppm; And an inorganic carrier silver nano antimicrobial agent in the range of 0.01 to 3% by weight relative to the base resin. Corner protection member. The method of claim 29, The corner protection member is a corner protection member further comprises an organic antimicrobial agent in the range of 0.01 to 3% by weight relative to the base resin. The method of claim 30, The corner protection member is a corner protection member further comprises a sunscreen in the range of 0.01 to 0.5% by weight relative to the base resin. The method of claim 29, Corner protector is a compound in which the antioxidant is a mixture of the hindered phenol-based antioxidant and thio compound-based antioxidant in a 1: 1. The method of claim 30, The organic antimicrobial agent is selected from the group consisting of zinc pyrithione antimicrobial agent, tri-closan antimicrobial agent, thiabendazole antimicrobial agent, and isothiazolinone antimicrobial agent, Or a corner protection member thereof. The method of claim 31, wherein The sunscreen is a corner protective member that is a compound in which a hindered amine compound and a benzotriazole compound are mixed 1: 1. The method according to any one of claims 29 to 34, wherein The base resin is polypropylene (PP), polyethylene (PE), polycarbonate (PC), thermoplastic polyurethane (TPU), polymethyl methacrylate (PMMA), polystyrene (PS), acrylonitrile budadiene styrene Corner protection member which is any of (ABS). In the line protection member constituting the shopping cart, The composition of the line protection member Base resins; The silver nano antibacterial agent; 1.2% by weight of a plasticizer compared to the base resin used in the base resin; And Fluoropolymer processing aid in the range of 500 to 2000 ppm Including, The silver nano antimicrobial agent is a) 500 to 2000 ppm of the range of the polymer carrier silver nano antimicrobial agent; Or b) a polymer carrier silver nano antibacterial agent in the range of 1 to 500 ppm; And an inorganic carrier silver nano antimicrobial agent in the range of 0.01 to 3% by weight relative to the base resin. Line protection member. The method of claim 36, The line protection member is a line protection member further comprises an organic antimicrobial agent in the range of 0.01 to 3% by weight relative to the base resin. The method of claim 37, wherein The line protection member is a line protection member further comprises a sunscreen in the range of 0.01 to 0.5% by weight relative to the base resin. The method of claim 36, The organic antimicrobial agent is selected from the group consisting of zinc pyrithione antimicrobial agent, tri-closan antimicrobial agent, thiabendazole antimicrobial agent, and isothiazolinone antimicrobial agent, Or a line protective member thereof. The method of claim 38, The sunscreen is a line protective member which is a compound of a hindered amine compound and a benzotriazole compound in a 1: 1 mixture. The method according to any one of claims 36 to 40, And the base resin is any one of PVC, polypropylene (PP), polyethylene (PE), thermoplastic polyurethane (TPU), and acrylonitrile budadiene styrene (ABS). In the shopping cart, A frame having a caster for movement mounted below; A basket mounted to the frame; A line protection member on the basket; A handle member provided on an upper portion of one side of the basket; And Baby seat provided inside the basket Including, The line protection member is provided with a corner protection member on both corners opposite the handle member, The handle member has a handle holder on both sides, A cart lock member is provided on a portion of the handle member, The handle member is composed of a first base resin; First silver nano antibacterial agent; Antioxidant in the range of 0.1 to 3% by weight relative to the first base resin; Fluorine resin processing aids in the range of 500-2000 ppm; And it comprises an organic antimicrobial agent in the range of 0.01 to 3% by weight relative to the first base resin, The handle holder has a composition of a second base resin; Second silver nano antibacterial agent; And it includes an antioxidant in the range of 0.1 to 3% by weight relative to the second base resin, The composition of the cartlock member is a third base resin; Third silver nano antibacterial agent; And it includes an antioxidant in the range of 0.1 to 3% by weight relative to the third base resin, The baby sheet may include a fourth base resin; A fourth silver nano antibacterial agent; And it includes an antioxidant in the range of 0.1 to 3% by weight relative to the fourth base resin, The corner protective member may include a fifth base resin; A fifth silver nano antimicrobial agent; And it includes an antioxidant in the range of 0.1 to 3% by weight relative to the fifth base resin, The line protective member may include a sixth base resin; Sixth silver nano antibacterial agent; 1.2% by weight of a plasticizer compared to the sixth base resin used in the sixth base resin; And a fluorine resin processing aid in the range of 500 to 2000 ppm, The first to sixth silver nano antimicrobial agents are each a) 500 to 2000 ppm of the range of the polymer carrier silver nano antimicrobial agent; Or b) a polymer carrier silver nano antibacterial agent in the range of 1 to 500 ppm; And an inorganic carrier silver nano antibacterial agent in a range of 0.01 to 3% by weight relative to the first to sixth base resins. Shopping cart. The method of claim 42, wherein The antioxidant is a compound in which a hindered phenolic antioxidant and a thio compound antioxidant are mixed 1: 1. The organic antimicrobial agent is an organic antimicrobial agent selected from the group consisting of zinc pyrithione antimicrobial agents, tri-closan antimicrobials, thiabendazole antimicrobials, and isothiazolinone antimicrobials, Or a combination thereof Shopping cart. The method of claim 42 or 43, The first base resin may be polycarbonate (PC), acrylonitrile styrene (SAN), polyethylene terephthalate (PET), thermoplastic polyurethane (TPU), poly (4-methyl 1-pentine) (Poly (4-methyl 1-pentene), polymethylmethacrylate (PMMA), polystyrene (PS), acrylonitrile butadiene styrene (ABS) and styrene butadiene copolymer (K-resin), The second base resin is any one of nylon (polyamide 6), polyacetal (POM), and polybutylene terephthalate (PBT), The third base resin is any one of nylon (polyamide 6), polyacetal (POM), and polybutylene terephthalate (PBT), The fourth base resin is polypropylene (PP), polyethylene (PE), polycarbonate (PC), thermoplastic polyurethane (TPU), polymethyl methacrylate (PMMA), polystyrene (PS), acrylonitrile budadiene Any one of styrene (ABS), The fifth base resin is polypropylene (PP), polyethylene (PE), polycarbonate (PC), thermoplastic polyurethane (TPU), polymethyl methacrylate (PMMA), polystyrene (PS), acrylonitrile budadiene Any one of styrene (ABS), The sixth base resin is any one of PVC, polypropylene (PP), polyethylene (PE), thermoplastic polyurethane (TPU), and acrylonitrile budadiene styrene (ABS). Shopping cart.

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