JP2004249287A - Sheet for preventing fouling - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet for preventing a fouling by neither generating an adhesive transfer after using nor lowering an adhesive strength even if being caught by a liquid in using. <P>SOLUTION: The sheet for preventing the fouling 11 is composed of a base material 13 such as a polyester film, a foamed resin 14 of an elastic body formed on one surface of the base material 13 and composed of a foamed acrylic resin, and a water-repellent coat 15 composed of a super water-repellent fluorine coat coated on an outer surface of the foamed resin 14. A material having a surface tension lower than the liquid 22 such as a water and an oil, is selected as the surface tension of the water-repellent coat 15. Therefore, the liquid 22 does not penetrate into a lower surface of the sheet for preventing the fouling 11due to a water-repellent effect of the water-repellent coat 15, even if this sheet is caught by the liquid 22. As a result, the water-repellent effect can be kept without lowering of the adhesive strength of the foamed resin 14 of the sheet 11 to a material to be adhered 20. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

  The present invention relates to an antifouling sheet, and more particularly to an antifouling sheet used to prevent dirt around a kitchen.

  FIG. 2 is a perspective view showing a part of an arrangement configuration of a general system kitchen.

  Referring to the figure, a grill 58 is incorporated in the front of a countertop 57 of the system kitchen, and a guard plate 55 in which a gas range 56 and a grill exhaust port 59 are arranged is embedded in the upper surface of the countertop 57. Have been.

  In a kitchen, dirt often adheres because of cooking, and in particular, dirt often adheres to a boundary portion between the guard plate 55 and the countertop 57 and a corner portion between the system kitchen and the floor. The dirt at the boundary is usually removed with a spatula or the like, but as a countermeasure, a tape for preventing dirt is put on this part in advance, and if this tape becomes dirty, it is replaced. It has been proposed to keep it clean at all times.

  FIG. 3 is a diagram for explaining a usage state of such a tape for preventing contamination, and is a diagram corresponding to a cross-sectional view taken along line III-III of FIG.

  Referring to the figure, an end of guard plate 55 to which sword 60 is attached is placed on the upper surface of countertop 57. Then, a bent dirt prevention sheet 62 is attached so as to follow the end of the guard plate 55 and the upper surface of the countertop 57 with which this end is in contact. This facilitates removal of dirt on the boundary surface between the guard plate 55 and the countertop 57.

  FIG. 4 is a cross-sectional view showing a schematic configuration of the stain prevention sheet shown in FIG.

  Referring to the drawing, the stain prevention sheet 62 is configured by forming an adhesive 65 on one surface of a base material 64 such as a synthetic resin film or aluminum foil. In use, the outer surface of the adhesive 65 is brought into contact with the adherend 20 such as a countertop or the like, and the dirt prevention sheet 62 is pressed and used. Thus, it is possible to prevent dirt from adhering to the adherend 20 on the lower surface of the dirt prevention sheet 62 that has been stuck.

  The use of the above-described dirt prevention sheet can effectively prevent and remove dirt around the kitchen. Since the adhesive 65 of the stain prevention sheet 62 is generally formed to be thick, even if water, oil, or the like adheres to the stain prevention sheet 62, the contact surface with the adherend 20 may be used. There is almost no risk that these will penetrate.

  With the above-described dirt prevention sheet, dirt removal is efficiently performed, but when the dirt prevention sheet 62 is peeled off after a certain period of time, at least glue remains on the upper surface of the adherend 20. Therefore, if left unattended in this state, new dirt or the like is likely to be attached to the remaining glue portion, and the dirt may be more conspicuous.

  Therefore, a stain prevention sheet that can be attached without using an adhesive has been further proposed.

  FIG. 5 is a diagram showing a schematic configuration of the stain prevention sheet not using the adhesive.

  Referring to the figure, a stain prevention sheet 67 is formed by forming a foamed resin 70 such as foamed styrene on one surface of a base material 69 made of a synthetic resin film or aluminum foil. In use, the foamed resin 70 exerts an adsorption effect by pressing the outer surface of the foamed resin 70 so as to be in contact with the upper surface of the adherend 20, and the stain prevention sheet 67 is adhered to the adherend 20. Become. Since the dirt preventing sheet 67 does not use an adhesive, even if it is peeled off from the adherend 20, there is no adhesive residue on the surface of the adherend 20, and the stain on the adherend 20 does not occur. Can be efficiently prevented.

  However, the stain prevention sheet 67 solves the problem of adhesive residue, but causes a problem when water, oil, or the like adheres.

  FIG. 6 is a schematic enlarged cross-sectional view of the dirt prevention sheet 67 during use for explaining this problem.

  Referring to the figure, concave portions 18 are formed at predetermined intervals with respect to flat portions 17 on the outer surface of foamed resin 70 constituting stain prevention sheet 67 by porosity formed by a foaming process. The suction force of the foamed resin 70 is such that the gas in the space generated between the foamed resin 70 and the upper surface of the adherend 20 is extruded by the pressing of the dirt prevention sheet 67 and adhered by the suction (sucker) effect. is there.

  Therefore, in a normal use state, the adsorption force of the stain prevention sheet 67 to the adherend 20 does not decrease. However, if the liquid 22 such as water or oil adheres to the end of the stain prevention sheet 67 as shown in the drawing, the capillary phenomenon due to a slight gap between the lower surface of the foamed resin 70 and the upper surface of the adherend 20. Thereby, the liquid 22 permeates the lower surface of the foamed resin 70.

  When the liquid 22 penetrates, the adsorbing effect of the foamed resin 70 on the adherend 20 is sharply reduced, and the stain prevention sheet 67 is easily peeled off from the adherend 20. Particularly, around the kitchen, water or the like often splashes on the stain prevention sheet 67, so that such a stain prevention sheet 67 cannot maintain a sufficient stain prevention effect.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an antifouling sheet in which no adhesive residue occurs after use, and an adhesive force is not reduced even when a liquid such as water is applied during use. Aim.

  In order to achieve the above object, the invention according to claim 1 is an antifouling sheet that is attached to an adherend and used to prevent dirt on the surface thereof, comprising: An elastic layer formed on one surface of the base material and having an outer surface having a flat end and a concave portion and having an adsorption effect, and a water-repellent coat formed on at least a surface of a flat portion located at an end of the elastic layer. It is provided with.

  With this configuration, the intrusion of the liquid from the end of the stain prevention sheet is reduced or prevented.

  According to a second aspect of the present invention, in the configuration of the first aspect, the elastic layer is made of a foamed resin, and the water-repellent coat is mainly formed on a flat portion of the foamed resin.

  With this configuration, the effect of the water-repellent coating on the adsorption effect of the elastic layer is reduced.

  According to a third aspect of the invention, in the configuration of the first or second aspect, the surface tension of the water-repellent coat is set to 19 mN / m or less.

  With such a configuration, intrusion of a liquid such as water or oil that can adhere thereto is completely prevented.

  According to a fourth aspect of the present invention, in the configuration according to any one of the first to third aspects, the base material is made of an elastic synthetic resin.

  With this configuration, the entire stain prevention sheet can be expanded and contracted.

  According to a fifth aspect of the present invention, in the configuration according to any one of the first to fourth aspects, the stain prevention sheet is formed in a tape shape.

  With such a configuration, the shape becomes a shape corresponding to the long and thin adhered surface of the adherend.

  As described above, according to the first aspect of the present invention, no adhesive residue is generated when peeled off, and it is difficult for liquid to enter from the end of the stain prevention sheet. Reduction of the effect is suppressed.

  According to the second aspect of the present invention, in addition to the effect of the first aspect of the present invention, the influence of the elastic layer on the adsorption effect is reduced, so that a highly reliable dirt prevention sheet is obtained.

  According to the third aspect of the present invention, in addition to the effects of the first or second aspect of the present invention, the infiltration of a liquid such as water or oil is completely prevented, so that the adsorption effect of the elastic layer is reduced. Never.

  According to the invention described in claim 4, in addition to the effects of the invention described in any one of claims 1 to 3, the entire antifouling sheet can be expanded and contracted, so that it can be easily attached to an adherend including a curved surface. It becomes.

  According to the invention of claim 5, in addition to the effect of the invention of any one of claims 1 to 4, since the shape according to the elongated surface to be adhered is formed, the attachment to the adherend is efficient. It is performed in.

  FIG. 1 is an enlarged cross-sectional view showing a schematic configuration when the stain prevention sheet according to the first embodiment of the present invention is used.

Referring to the figure, a stain prevention sheet 11 has a base material 13 made of a polyester film having a thickness of 25 μm, and a foamed resin formed on one surface of the base material 13 as an elastic layer made of a foamed acrylic resin having a thickness of 70 μm. 14 and a water-repellent coat 15 formed on the outer surface of the foamed resin 14 and formed of a super-water-repellent fluorine coat having a maximum coating amount of 1 g / m ² . An experiment was conducted on the relationship between the coating amount changed in the range up to the vicinity of the maximum coating amount and the stain prevention effect, which will be described later.

  Since the water-repellent coat 15 is applied in the above-described amount, the water-repellent coat 15 is mainly applied to the flat portion 17 of the foamed resin 14 as shown in FIG. The application amount is relatively small. For this reason, even if the water-repellent coat 15 is applied, the adsorption effect of the concave portion 18 on the adherend 20 of the foamed resin 14 does not decrease. As a result, when the stain prevention sheet 11 is pressed to a desired position with respect to the adherend 20 such as a countertop, the stain prevention sheet 11 is adhered by the same suction effect as the conventional stain prevention sheet shown in FIG. It will be attached to the body 20.

  Although the surface tension of the water-repellent coat 15 according to this embodiment is 10 mN / m, in practice, the surface tension of the water-repellent coat 15 may be set to 19 mN / m or less. This is because the surface tension of water is 72 mN / m and the surface tension of oil is 20 mN / m. That is, as shown in FIG. 1, the surface tension of the water-repellent coat 15 applied to the lower surface of the foamed resin 14 may be set smaller than the surface tension of the liquid 22 such as water or oil. Then, even when the liquid 22 is applied to the end of the stain prevention sheet 11 as shown in the figure, the liquid 22 does not permeate the lower surface of the stain prevention sheet 11 due to the water repellency of the water repellent coat 15. As a result, there is no possibility that the adsorption effect of the stain prevention sheet 11 on the adherend 20 due to the penetration of the liquid 22 is reduced, and the initial adsorption effect can be maintained.

  When the stain prevention sheet 11 becomes dirty and is to be re-applied, it can be easily peeled off from the adherend 20 by grasping and lifting the end of the stain prevention sheet 11. Since no adhesive is used for the stain prevention sheet 11, no adhesive residue or the like is generated on the surface of the adherend 20 after peeling.

  In this embodiment, the antifouling sheet 11 is formed in a sheet shape. However, the antifouling sheet 11 may be finished in a tape shape with the same sectional configuration. In this case, since it can be stuck directly on the slender sticking surface of the sticking object, the usability is further improved.

  Further, in the above-described embodiment, a polyester film is used as the base material 13 constituting the stain prevention sheet 11, but a stretchable synthetic resin such as a polyurethane film may be used instead. . In this case, since the entirety of the stain prevention sheet 11 can be expanded and contracted, it can be easily attached to the adherend including a curved surface such as a corner surface of the guard plate.

  Furthermore, in the above embodiment, the water-repellent coat is applied to the entire outer surface of the foamed resin. However, if the water-repellent coat is applied only to the flat portion, it is possible to further reduce the decrease in the adsorption effect. Further, if a water repellent coat is applied only to the flat portion located at the end of the stain prevention sheet, a more efficient adsorption effect and a water repellent effect can be obtained.

  Furthermore, in the above-described embodiment, a super-water-repellent fluorine coat is employed as the water-repellent coat. Can be used.

  Further, in the above embodiment, the material and the thickness of the base material and the foamed resin are specified, but other materials may be used depending on the application as long as they have the same function.

  Next, the following experiment was conducted in order to know the relationship between the coating amount of the super-water-repellent fluorine coat described above and the water-repellent effect and the adsorption effect.

  As the stain prevention sheet as a sample, seven kinds were prepared in which a super water-repellent fluorine coat was applied to one surface of a base material made of a polyester film having a width of 10 cm, a length of 10 cm, and a thickness of 25 μm after drying was changed. Then, the adherend was a stainless steel plate, and in the experiment, the adsorption effect in a state where the respective stain prevention sheets were adhered to the surface of the stainless steel plate was first determined. Thereafter, a water drop was dropped on the end of the stain prevention sheet, and the water repellency effect was determined based on whether the water drop wrapped around the lower surface of the stain prevention sheet.

The experimental results were as follows.

Regarding the adsorption effect, it was found that the adsorption effect was high for samples 1 to 5 (application amount after drying was 0.70 g / m ² or less), but sample 6 (application amount after drying was 1.00 g / m 2). ² ) had a slightly lower effect, and it was found that Sample 7 (application amount after drying was 1.10 g / m ² ) had a lower effect. This is presumably because, when the amount of application increases, the film thickness increases, so that a large amount of the super-water-repellent fluorine coat enters the concave portions of the base material, and the concave shape becomes gentle.

On the other hand, as for the water repellent effect, it was found that the samples 3 to 7 (the coating amount after drying was 0.10 g / m ² or more) had a high water repelling effect. .01 g / m ² ) had a low effect, and Sample 2 (application amount after drying was 0.05 g / m ² ) had a slightly lower effect. This can be confirmed because the greater the amount of application, the higher the water repellent effect. Samples 1 and 2 have a high adsorbing effect but a low water-repellent effect, so they are sufficiently adsorbed at the time of attachment. However, if water droplets or the like adhere to the lower surface of the sheet, the adsorbing power is reduced. It has been found. This tendency was particularly large in sample 1.

From the above results, the coating amount of the super water-repellent fluorine coat suitable as the stain prevention sheet is at least in the range of 0.05 to 1.00 g / m ² , and preferably 0.10 to 0.70 g / m ^2. it has been found that in a range of m ^2.

It is an expanded sectional view showing the schematic structure at the time of using the dirt prevention sheet by a 1st embodiment of this invention. It is the perspective view which showed schematic structure around the general system kitchen. FIG. 3 is a cross-sectional view corresponding to a cross-sectional view taken along a line III-III illustrated in FIG. 2, and is a cross-sectional view illustrating a usage state of a conventional stain prevention sheet. It is sectional drawing which showed the schematic structure of an example of the conventional dirt prevention sheet. It is sectional drawing which showed the schematic structure in the other example of the conventional dirt prevention sheet. FIG. 6 is an enlarged sectional view of a use state for explaining a problem of the stain prevention sheet shown in FIG. 5.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 11 ... Dirt prevention sheet 13 ... Substrate 14 ... Foam resin 15 ... Water-repellent coat 17 ... Flat part 18 ... Depression 20 ... Adhered body 22 ... Liquid In each figure, the same code | symbol shows the same or corresponding part.

Claims (5)

A stain prevention sheet that is attached to an adherend and used to prevent stains on its surface,
A sheet-like base material,
An elastic layer formed on one surface of the base material and having an adsorption effect including an outer surface having a flat portion and a concave portion,
A dirt preventing sheet comprising at least a water-repellent coat formed on a surface of the flat portion located at an end of the elastic layer. The elastic layer is a foamed resin,
The stain prevention sheet according to claim 1, wherein the water-repellent coat is mainly formed on the flat portion of the foamed resin. The stain prevention sheet according to claim 1 or 2, wherein the water-repellent coat has a surface tension of 19 mN / m or less. The antifouling sheet according to any one of claims 1 to 3, wherein the substrate is made of a stretchable synthetic resin. The stain prevention sheet according to claim 1, wherein the stain prevention sheet is formed in a tape shape.

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