JPH10138387A - Antimicrobial deodorized sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an antimicrobial deodorized sheet which can be easily detached and attached by a method wherein a removable fixed layer is formed to a face on one side of a substrate sheet 1, and a titanium oxide film is formed to a face on the other side. SOLUTION: A repeelable fixed layer 2 is formed to a face on one side of a substrate sheet 1, and titanium oxide 3 is formed to a face on the other side of the substrate sheet 1. There are plastis, paper, nonwoven, etc., as material of the substrate sheet 1. An ethylene therephtharate having a thickness to a certain degree is preferable since that of a card shape is especially easy to be used. As the fixed layer 2, foamed synthetic resin sheet of a structure wherein a fine hole opens to an inside cell having a larger diameter than that of the fine hole, and the inside cell opens to another cell with a fine diameter tube, or a synthetic resin sheet having stickiness on a surface which is composed of polypropylene glycol and polyurethane resin as main constituents, are used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antibacterial deodorizing sheet which can be easily attached and detached.

[0002]

2. Description of the Related Art Conventionally, for example, in order to treat the interior of a refrigerator with antibacterial and deodorizing treatment, titanium oxide dispersed in a binder is directly applied to the inner wall surface and the shelf of the refrigerator. It is also conceivable to form a titanium oxide film on the inner surface of the window glass of an automobile.

[0003]

However, while using the applied titanium oxide surface, the scattered food waste accumulates on the titanium oxide coating surface, and the titanium oxide coating surface is covered. , An apparent decrease in activity occurs. If the deposits on the surface of the titanium oxide film are removed by washing with water, the surface of the titanium oxide film becomes active again and can be used continuously.However, if you are going to wash the inner wall or shelf of the refrigerator with water, store it in the refrigerator. There is a problem that it is necessary to once take out the foods that are present, which is complicated.

[0004] Further, when a titanium oxide film is formed on the inner surface of a window glass of an automobile, there is a problem that cleaning and replacement of the window glass is impractical for the same reason.

Accordingly, an object of the present invention is to provide an antibacterial deodorizing sheet which can solve the above-mentioned disadvantages and can be easily attached and detached.

[0006]

The antibacterial deodorizing sheet of the present invention has the following constitution in order to achieve the above object.

That is, the antibacterial deodorizing sheet of the present invention is configured such that a releasable fixing layer is formed on one surface of the base sheet, and a titanium oxide film is formed on the other surface of the base sheet.

In the above invention, the base sheet may be made of polyethylene terephthalate, and the base sheet may have a thickness of 50 to 100 μm.

In the above invention, the fixing layer may be configured to have re-adhesiveness and re-peelability.

Further, in the above invention, the fixing layer has a structure in which fine pores and internal bubbles having a diameter larger than the fine pores are continuous on the surface, and the internal bubbles are connected to other bubbles by a small diameter tube. You may comprise so that it may have.

In the above invention, the fixing layer may be constituted such that the main component is polypropylene glycol and a polyurethane resin, and the thickness of the fixing layer is 300 to 600 μm.

Further, in the above invention, the fixing layer may be configured to have a printed layer such as a character or a pattern on the surface.

In the above invention, the titanium oxide film may be formed of an ink composition comprising a binder resin component, a solvent and titanium oxide.

Further, in the above invention, the ink composition may be constituted so that titanium oxide is contained in the binder in an amount of 5 to 500%.

Further, in the above invention, the titanium oxide film may be configured to have a printed layer such as a character or a pattern on the surface.

[0016]

Embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a sectional view showing one embodiment of the antibacterial deodorizing sheet of the present invention. FIG. 2 is a sectional view showing another embodiment of the antibacterial deodorizing sheet of the present invention. In the figure, 1 is a base sheet, 2 is a fixing layer, 3 is a titanium oxide film, and 4 is a protective film.

In the antibacterial deodorizing sheet of the present invention, the releasable fixing layer 2 is formed on one surface of the base sheet 1 and the titanium oxide film 3 is formed on the other surface of the base sheet 1 ( (See FIG. 1).

The base sheet 1 supports the fixing layer 2 which is removable. Examples of the material of the base sheet 1 include plastic, paper, nonwoven fabric, synthetic leather, ceramics, and metal. In particular, a polyethylene terephthalate film having a certain thickness is preferable because it is easy to use in a card shape. The thickness of the base sheet 1 is not particularly limited, and may be any suitable thickness for forming the fixed layer 2 and the titanium oxide film 3. When a polyethylene terephthalate film is used, the thickness is preferably about 50 to 100 μm.

The fixing layer 2 is formed on the base sheet 1, and both can be fixed with an adhesive. Fixed layer 2
Is for fixing the base sheet 1 and the titanium oxide film 3 to a wall surface or the like. As the fixing layer 2, a foamed synthetic resin sheet having a structure in which micropores and internal air bubbles having a diameter larger than the micropores are continuous on the surface and the internal air bubbles are connected to other air bubbles by a small-diameter tube, or It is possible to use a synthetic resin sheet having polypropylene glycol and a polyurethane resin as main components and having a sticky surface. The former is, for example, a foam sheet described in JP-A-1-259043. In this case, the thickness of the fixed layer 2 is
300-600 μm is appropriate. The fixing layer 2 has removability. In other words, it is easy to peel it off and to fix it again simply because it is adhered only by overlapping it on a smooth surface and no adhesive or adhesive is used.

Further, on the surface of the base sheet 1 or the fixing layer 2, explanations such as the type of each antibacterial deodorizing sheet and the method of use thereof, and a design for giving a design an added value may be printed. When a print layer is formed on the surface of the fixed layer 2, the print layer is partially provided to secure the adhesion of the fixed layer 2. Before fixing the antibacterial deodorizing sheet on a smooth surface, it can be easily read.

The titanium oxide film 3 can be obtained by applying an ink composition comprising a resin component serving as a binder, a solvent, and titanium oxide to the base sheet 1 and drying and solidifying it.

As the binder, an acrylic resin, a vinyl resin, a urethane resin, a polyester resin, a melamine resin, an epoxy resin and the like can be used. According to the composition of the base sheet 1, a binder having good adhesion can be appropriately selected. Good. Further, additives such as a dispersant and a leveling agent may be added as needed. The coating method of the ink composition is preferably a coating method such as roll coating or gravure coating, or a printing method such as gravure printing or screen printing.

The mixing ratio of titanium oxide to the binder is desirably selected from the range of 5 to 500%. If the mixing ratio of titanium oxide is 5% or less, sufficient titanium oxide activity cannot be obtained. Also, the mixing ratio of titanium oxide is 500%
Above, the binding effect of the binder is not sufficient, and the titanium oxide film 3 is easily peeled off, making handling difficult. A more preferable mixing ratio is such that a description and a pattern are provided on the base sheet 1. If the titanium oxide film 3 requires transparency, the mixing ratio is preferably 5 to 50%. It is better to be ~ 500%.

Further, on the surface of the titanium oxide film 3, a description for the type and usage of each antibacterial deodorizing sheet and a design for giving a design an added value may be printed.

Further, a protective film 4 may be provided on the fixed layer 2 (see FIG. 2). By providing the protective film 4 on the fixing layer 2, it is possible to prevent dirt and dust from adhering to the fixing layer 2 until the antibacterial deodorizing sheet is fixed on a smooth surface. As the protective film 4, for example, a thickness
It is preferable to use a 30 to 60 μm polypropylene film.

The titanium oxide surface of the antibacterial deodorizing sheet is excited by ultraviolet light to decompose germs and odorous organic molecules by an oxidation-reduction reaction to change them into carbon dioxide and water. As a result, antibacterial and deodorizing functions are obtained. Therefore, when the light amount is relatively small, such as in a refrigerator, it is more effective to install the light source near the light source. In addition, if the environmental conditions are adjusted so that the air contacting the surface of the applied titanium oxide is agitated by a blower fan or the like, more antibacterial and deodorizing effects can be obtained.

In the antibacterial deodorizing sheet of the present invention, the fixing layer 2 adheres to a smooth surface and has removability.
Therefore, in order to attach the antibacterial deodorizing sheet, the sheet can be easily fixed by overlapping the fixing layer 2 on the surface to be attached and applying a slight pressure by hand. On the other hand, to remove the antibacterial deodorizing sheet, the sheet can be easily peeled off by lifting the outer peripheral portion of the sheet with a finger.

The antibacterial deodorizing sheet having such a structure can be used for a refrigerator, a car, a wall in a general room, a glass surface, a cupboard,
It can be used in various places such as food display cases, medicine cases, and inside medicine shelves. If the antibacterial deodorizing sheet is manufactured in the form of a roll, it is efficient in terms of production and has the advantage that it can be easily cut to a size to be applied at the time of use. The shape of the antibacterial deodorizing sheet is generally rectangular, but it may be cut into a desired shape according to the smooth surface to be applied. As a matter of course, the larger the area, the higher the antibacterial deodorizing effect.

[0030]

【Example】

Example 1 A 100 μm-thick polyethylene terephthalate film was used as a base sheet, and one side was coated with DICFam (manufactured by Dainippon Ink and Chemicals, Inc.), and then heated and foamed.
A fixed layer having removability was formed and cut into a size of 10 × 15 cm.

Next, a urethane-based binder (N-Polymer Nippon Polyurethane Industry Co., Ltd.) is applied to the other surface of the base sheet.
2301) and titanium oxide (AMT-1 manufactured by Teica Corporation)
00) and dried to a thickness of 2
A μm titanium oxide film was formed.

Four sheets of the antibacterial deodorizing sheets thus obtained were placed on the side surface in the refrigerator, and each sheet was lightly pressed by hand and fixed.

In this state, the antibacterial deodorizing sheet did not fall down. Further, when the end portion of the antibacterial deodorizing sheet was pinched with a finger and a force was applied to the sheet surface in a vertical direction, the antibacterial deodorizing sheet was easily separated from the side of the refrigerator.

Further, the antibacterial deodorizing sheet obtained in this manner was confirmed to have the same antibacterial deodorizing function as when a titanium oxide film was applied directly to the wall surface in the refrigerator.

Example 2 An antibacterial deodorizing sheet was obtained in the same manner as in Example 1 except that a synthetic resin sheet containing polypropylene glycol and a polyurethane resin as main components was used as the fixing layer. In the second embodiment, the same effect as in the first embodiment was obtained.

[0036]

Since the present invention has the above-described structure, it has the following effects.

The antibacterial deodorizing sheet of the present invention can be easily adhered to a smooth surface such as a wall surface or a glass surface in a refrigerator or an automobile, and has an antibacterial effect by a redox reaction of titanium oxide on the adhered surface. The effect of deodorization is obtained. Further, when it is considered that the activity of titanium oxide has deteriorated during use, the antibacterial deodorizing sheet can be easily and immediately peeled off, and can be easily reused.

Further, since the fixing layer does not use an adhesive or a pressure-sensitive adhesive, it is easy to handle the antibacterial deodorizing sheet and hardly adheres to dirt and dust. Even if there is dust or dirt, it can be washed off with water.

The antibacterial deodorizing sheet can be fixed in any shape as long as the sticking surface is smooth.

[Brief description of the drawings]

FIG. 1 is a sectional view showing one embodiment of an antibacterial deodorizing sheet of the present invention.

FIG. 2 is a sectional view showing another embodiment of the antibacterial deodorizing sheet of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base sheet 2 Fixed layer 3 Titanium oxide film 4 Protective film

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI B32B 27/36 B32B 27/36

Claims (9)

[Claims] 1. An antibacterial deodorizing sheet, wherein a releasable fixing layer is formed on one surface of a base sheet, and a titanium oxide film is formed on the other surface of the base sheet. 2. The antibacterial deodorizing sheet according to claim 1, wherein the base sheet is made of polyethylene terephthalate, and the thickness of the base sheet is 50 to 100 μm. 3. The antibacterial deodorizing sheet according to claim 1, wherein the fixing layer has re-adhesiveness and re-peelability. 4. The fixing layer has a structure in which fine pores and internal bubbles having a diameter larger than the fine pores are continuous on the surface, and the internal bubbles are connected to other bubbles by a small-diameter tube. Antibacterial deodorizing sheet as described. 5. The fixing layer has a main component of polypropylene glycol and a polyurethane resin, and has a thickness of 30%.
The antibacterial deodorizing sheet according to claim 1, which has a thickness of 0 to 600 µm. 6. The antibacterial deodorizing sheet according to claim 1, wherein the fixed layer has a printed layer such as a character or a pattern on the surface. 7. The antibacterial deodorizing sheet according to claim 1, wherein the titanium oxide film is formed of an ink composition comprising a resin component serving as a binder, a solvent, and titanium oxide. 8. The antibacterial deodorizing sheet according to claim 7, wherein the ink composition contains 5 to 500% of titanium oxide with respect to the binder. 9. The antibacterial deodorizing sheet according to claim 1, wherein the titanium oxide film has a printed layer such as characters or patterns on the surface.