JP2847625B2 - Antibacterial treatment method for door knob and coating used in the treatment method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to hospitals, schools, libraries,
In a hotel or other facility, a door knob for covering an opening / closing knob attached to a door of a building where many people enter and exit to prevent infection with harmful bacteria (pathogen) attached to the knob. The present invention relates to an antibacterial treatment method and a coating used in the treatment method.

[0002]

2. Description of the Related Art There are no antibacterial treatments on opening / closing knobs mounted on doors of buildings where many people enter and exit, such as hospitals, schools, libraries, hotels, etc., and disinfect when necessary. The method of disinfecting with a liquid has been adopted.

[0003]

However, in the conventional method of disinfecting with a disinfecting solution, there is a difficulty in maintaining the effect of disinfection, which is not reliable, and furthermore, the disinfecting operation requires labor and labor. At the same time, there is a problem of smell.

[0004] The present invention relates to a method for treating an antibacterial property of a door knob and a cover used in the treating method for solving the above-mentioned conventional problems.

[0005]

According to the present invention, an antibacterial agent-mixed binder formed by adding an antibacterial agent to a binder is applied to the surface of a heat-shrinkable plastic film, and the heat-shrinkable plastic film is formed into a cylindrical shape. Alternatively, the cover is formed by molding into a bag, and the cover is coated on a doorknob, and then the cover is heated with a heat medium to shrink the cover, thereby bringing the cover into close contact with the doorknob. The above problem was solved by adopting the means of fixing.

[0006]

According to the present invention having the above-mentioned structure, a coating formed by applying an antibacterial agent-mixed binder to the surface of a heat-shrinkable plastic film is inserted into a doorknob and heated to form a heat-shrinkable plastic film. Shrinks and the coating is tightly coated on the doorknob.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, an antibacterial agent-mixed binder formed by adding an antibacterial agent to a binder is applied to the surface of a heat-shrinkable plastic film, and the heat-shrinkable plastic film is formed into a tubular or bag-like shape. Forming a coating on the doorknob, and then coating the coating on the doorknob, and then heating the coating with a heating medium to cause the coating to shrink, so that the coating is tightly fixed to the doorknob. An antibacterial treatment method for a door knob will be described below.

The heat-shrinkable plastic film 1 used in the present invention is not particularly limited, but it is preferable to use a heat-shrinkable plastic film of polypropylene, polystyrene, polyester or polyolefin. Then, an antibacterial agent mixed binder 2 formed by adding and mixing an antibacterial agent to a binder as a binder is applied to the surface of the heat shrinkable plastic film 1. Although it is not necessary to limit, it is preferable to use an inorganic antibacterial agent comprising silver, copper, zinc or the like supported on an inorganic substance such as zeolite, apatite or zirconium phosphate, or an organic antibacterial agent. It is recommended to use a polyester-based or acrylic-based binder as the binder.

The heat-shrinkable plastic film 1 coated with the antibacterial agent mixed binder 2 on its surface is slightly larger than the length and diameter of the doorknob 3 and is formed into a tubular or bag-like shape to form a cover 4. Although there is no particular limitation, it is recommended that a perforation 5 be carved on a part of the cover 4, which facilitates peeling after use.

The tubular or bag-shaped cover 4 is coated over the outer peripheral surface of the doorknob 3, and thereafter,
By heating with a heat medium such as a hot air gun or a hair dryer, the coating 4 is heat-shrinkable, so that the entire coating shrinks and is tightly fixed to the outer peripheral surface of the door knob 3.

As the heat-shrinkable plastic film 1 constituting the covering 4, a uniaxial or biaxial shrinkable film is used depending on the shape of the doorknob 3 as an object. It is necessary to design the shape and dimensions of the cover 4 so that it works.

When the cover 4 is tightly fixed to the door knob 3, even if bacteria such as Escherichia coli, Staphylococcus aureus, MRSA, and other harmful bacteria to the human body adhere to the cover 4, the antibacterial agent acts on each of the bacteria. Died or attenuated and became harmless to the human body.

An antimicrobial mixed binder 2 applied to the surface of a heat shrinkable plastic film 1 constituting the coating 4
May be the same color as the color of the heat-shrinkable plastic film 1, but by applying the antibacterial agent mixed binder 2 having a color different from the color of the heat-shrinkable plastic film 1, When the person repeatedly grips the door knob 3 and repeats the turning operation, the coating layer of the antibacterial agent mixed binder 2 gradually wears out, and the change in color tone and concentration is visually checked to confirm the remaining antibacterial agent layer. It can be a guide for

The silver-based inorganic antibacterial agent is 0.5% and 1.%.
Tables 1 to 3 show the results obtained by applying the antibacterial agent mixed binder 2 formed by adding and mixing 0% to the heat-shrinkable plastic film 1 and measuring the antibacterial activity. Table 1 shows that the test bacteria were Escherichia coli,
Table 2 shows that the test bacterium was Staphylococcus aureus, and Table 3 shows that the test bacterium was MRS.
A. From the measurement results in Tables 1 to 3, it was found that the silver-based inorganic antibacterial agent had antibacterial activity against any bacteria.

[0015]

[Table 1]

[0016]

[Table 2]

[0017]

[Table 3]

Example 1 One part of an antibacterial agent was added to 100 parts of a nitrocellulose / polyamide-based printing ink suitable for printing polypropylene as a binder on the surface of a polypropylene film having a thickness of 25 μm and a uniaxial type shrinkage of 50%. An antibacterial agent mixed binder formed by addition and mixing is applied at a thickness of 2 μm, and the polypropylene film is formed into a cylindrical shape having a folding diameter of 60 mm and a length of 60 mm,
A coating was formed by perforating 3: 1 in the length direction. Then, the coating was coated on a door knob of a hospital room and heated with a hair dryer for 3 minutes. As a result, the coating was tightly fixed to the door knob. One week later, the antibacterial activity was tested, and none of E. coli, Staphylococcus aureus and MRSA was detected.

Example 2 On a surface of a biaxially shrinkable type (shrinkage ratio 10%, width 50%) polyethylene film having a thickness of 16 μm, 100 parts of urethane / acrylic printing ink suitable for polyethylene printing as a binder was applied. An antibacterial agent mixed binder formed by adding and mixing one part of an antibacterial agent is applied at a thickness of 5 μm, and the polyethylene film is molded into a cylindrical shape having a folded diameter of 30 mm and a length of 150 mm, and a lengthwise direction of 2 mm. : 1 to form a coating. Then, the cover was coated on a doorknob in a school meeting room and heated with a hot gun for 1 minute. As a result, the cover was tightly fixed to the doorknob. One week later, the antimicrobial activity was tested, but E. coli, Staphylococcus aureus and MRSA
Were not detected.

[0020]

Since the present invention is as described above, a tubular or bag-like cover formed by applying an antibacterial agent-mixed binder to the surface of a heat-shrinkable plastic film adheres closely to the outer peripheral surface of the door knob. It is fixed and can prevent infection by bacteria harmful to the human body. The antimicrobial effect lasts until the antimicrobial mixed binder layer applied to the heat-shrinkable plastic film is worn down and finally the film surface is exposed. Furthermore, by changing the color tone of the heat-shrinkable plastic film and the antibacterial agent mixed binder, as the coating layer of the antibacterial agent mixed binder wears out, the color tone and the density change are visually recognized, and the remaining antibacterial agent layer You can check it.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cover used in an antibacterial treatment method for a door knob of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a perspective view showing a state in which a doorknob is covered with a cover used in the antibacterial treatment method of the doorknob of the present invention.

FIG. 4 is a cross-sectional view showing a state in which a cover used in the antibacterial treatment method of the door knob of the present invention is closely fixed to the door knob.

[Explanation of symbols]

1 Heat shrinkable plastic film, 2 Antibacterial agent mixed binder, 3 Door knob, 4 Coating.

Claims (3)

(57) [Claims] 1. A heat-shrinkable plastic film having a surface
An antibacterial agent mixed binder formed by adding and mixing an antibacterial agent to a binder is applied, and the heat-shrinkable plastic film is formed into a tubular or bag-like shape to form a cover, while the cover is coated on a door knob. Then, the coating is heated with a heat medium, and the coating is shrunk so that the coating is tightly fixed to the doorknob. 2. The surface of a heat-shrinkable plastic film,
An antibacterial agent mixed binder formed by adding and mixing an antibacterial agent to a binder is applied, and the heat-shrinkable plastic film is slightly larger than a length and a diameter of a door knob, and is formed into a tubular shape or a bag shape. Coating used for antibacterial treatment of door knob. 3. The coating for use in a method for treating antibacterial properties of a doorknob according to claim 2, wherein the color of the heat-shrinkable plastic film and the color of the antibacterial agent mixed binder are different.