JP7385465B2 - kitchen wall protection sheet - Google Patents

Description

The present invention relates to a sheet that is attached to a kitchen wall to protect the wall from dirt.

2. Description of the Related Art Kitchen wall protection sheets are known that are attached to kitchen walls that are prone to oil stains and the like to protect the walls from dirt.
Conventional kitchen wall protection sheets are made by laminating an adhesive layer on one side of a sheet body made of aluminum foil or resin film, and are used by attaching the bonded side to the kitchen wall.

Since oil stains and the like adhere to the sheet covering the kitchen wall, the wall itself is prevented from becoming dirty. In addition, dirt attached to the sheet is easier to wipe off than when it is attached to a wall surface, and if the stain is severe, the sheet can be peeled off from the wall surface, discarded, and replaced with a new sheet.
In order to save the trouble of replacing the sheet, as in Patent Document 1, a sheet in which the sheet body is laminated in multiple layers is pasted on the wall surface in advance, and when the front sheet body gets dirty, it is peeled off and the back sheet is replaced. Attempts have also been made to make the main body appear on the front side.

Utility Model Publication No. 2-147711

However, as shown in Patent Document 1, conventional kitchen wall protection sheets often have a flat adhesive layer on the bonding surface, so when this surface is bonded to the wall, it tends to become airtight. If air (including gas generated between the wall surface and the wall surface, the same applies hereinafter) gets into the gap, it is not easy to expel the air to the outside even if you use a spatula or the like.
Therefore, air bubbles may form at the interface between the wall surface and the bonded surface of the sheet, causing unevenness and wrinkles to appear on the sheet.If the sheet itself is transparent, the air bubbles may be visible from the front side, resulting in an undesirable appearance. It was bad.
In addition, since the sheet has high adhesion to the wall surface, when the sheet is peeled off from the wall surface, the adhesive tends to adhere to the wall surface and leave a mark, which may result in an unsightly appearance even after the sheet is removed.

Furthermore, in the kitchen wall protection sheet of Patent Document 1, the sheet body is exposed on the surface, but if the sheet body has poor slipperiness, dirt will easily stick to the surface, and if dirt gets on it, it will be difficult to wipe it off. There was also the problem that it was difficult to remove air by squeezing with a spatula.

Therefore, the problem to be solved by the present invention is to create a kitchen wall protection sheet that is difficult to get dirty, easy to remove by wiping etc. even if it gets dirty, hard to leave an adhesive after peeling off, and to be able to be easily attached to the wall surface. This is to make it difficult for air to enter between the two, and to make it easier to expel air if it does.

In order to solve the problem mentioned above, the kitchen wall surface protection sheet according to the invention is laminated on a sheet body made of a resin film and the back side of the sheet body, and has many minute convexities on the surface to be attached to the kitchen wall surface. The sheet has a structure including an adhesive layer dotted with parts and a coating layer laminated on the surface of the sheet main body.

In this way, if a large number of minute protrusions are formed on the adhesive layer on the back of the sheet body, when the sheet is pasted to the wall of the kitchen, the convex parts will stick tightly to the wall surface on the bonded surface, but the convex parts A gap will be created between the ridge and the convex portion, which will appear to be slightly raised from the wall surface.
Therefore, even if air gets into the space between the bonded surface of the sheet and the wall surface, it may naturally escape to the outside through the gaps between the convex parts, or it can be easily released to the outside by using a spatula, etc. It is possible to drive them out.
Therefore, the generation of air bubbles on the interface between the sheet and the wall surface is suppressed, and the appearance of irregularities and wrinkles on the surface of the sheet, and the appearance of air bubbles when the sheet is transparent, are prevented.
Since the sheet and wall surface are adhered mainly only at the convex portions of the entire bonded surface, even when the sheet is peeled off, the adhesive is less likely to transfer and leave no trace.

Furthermore, by forming a coating layer on the surface of the sheet body, the slipperiness of the surface increases, making it easier to handle when pasting the sheet to a wall surface, and the sheet can be pasted in a neatly stretched state. Therefore, air is further prevented from entering between the sheet and the wall surface.
Even if air gets in, the coated surface is smooth, so operations such as squeezing with a spatula can be performed smoothly, and it is even easier to expel the air to the outside.
The coating layer increases the slipperiness of the surface, making it difficult for dirt to adhere to it, and even if it does adhere, it can be easily removed by wiping or the like.

In the kitchen wall surface protection sheet according to the invention, it is preferable that the coating layer is made of a fluorine coating.
When using a fluorine coat, it is highly water- and oil-repellent and moisture-proof, so it has excellent stain resistance, and it has high acid and abrasion resistance, so it is durable, and it has low friction, so it has good sliding properties. It can be a sheet. In addition, the fluorine coat in the present invention refers to a coat containing a fluororesin, which is a polymer compound whose structure has a unit in which fluorine atoms and carbon atoms are bonded, and is not limited to a coat composed only of fluororesin. , other resins and additives may be included as long as they do not impede the effects of the present invention. In this specification, it will be expressed as a fluorine coat for convenience.

In the kitchen wall surface protection sheet according to the invention, it is preferable to adopt a structure in which the coated surface on which the coated layer is laminated has a contact angle with respect to edible oil of 60° or more when measured by the θ/2 method.
When the contact angle with respect to edible oil is 60° or more, the edible oil, which is frequently used in kitchens and is frequently splashed, is prevented from adhering to the coating layer, so that staining of the sheet is further prevented.

In the kitchen wall protection sheet according to the invention, it is preferable that the sheet main body is made of a polyethylene terephthalate film having a thickness of 30 to 100 μm.
Polyethylene terephthalate is highly transparent, so even if the sheet is attached to a wall, the patterns and designs on the wall will be visible, so the aesthetics will not be compromised.
If the thickness of the polyethylene terephthalate film is less than 30 μm, the thickness is too small and may cause damage. Moreover, when the thickness exceeds 100 μm, the thickness is too large and the rigidity increases, the followability when bonding to a wall surface decreases, and wrinkles etc. are likely to occur.
By setting the thickness to 30 to 100 μm, good strength and followability to the wall surface can be achieved.

In the kitchen wall surface protection sheet according to the invention, it is preferable that the adhesive layer is made of an acrylic adhesive having a thickness of 20 to 40 μm.
Acrylic adhesives are highly transparent, so even when the sheet is pasted on a wall, the patterns and designs on the wall can be seen through, so the aesthetics are not compromised.
If the thickness of the adhesive layer is less than 20 μm, the adhesive force may be insufficient, it may be difficult to form convex portions, and it may be difficult to discharge air that has entered the interface between the sheet and the wall surface to the outside. Moreover, when the thickness exceeds 40 μm, transparency decreases and costs increase.
By setting the thickness to 20 to 40 μm, transparency, adhesive strength, and bubble suppression performance can be improved, and costs can be reduced.

Since the kitchen wall surface protection sheet according to the invention is configured as described above, it is difficult to get dirty, it is easy to wipe off when it gets dirty, it is hard to leave adhesive after it is removed, and there is no space between it and the wall surface. It is difficult for air to enter, and if air does get in, it is easier to expel the air.

Cross section of kitchen wall protection sheet Partial perspective view of kitchen wall protection sheet Back view of kitchen wall protection sheet Perspective view showing how the kitchen wall protection sheet is used

Embodiments of the present invention will be described below with reference to the drawings.
The kitchen wall protection sheet 10 shown in FIGS. 1 to 3 has a sheet main body 11, an adhesive layer 12, and a coating layer 13, and as shown in FIG. It is used to prevent cooking oil from getting dirty during cooking.
The vertical and horizontal dimensions of the kitchen wall protection sheet 10 are not particularly limited, but 700 to 1000 mm are exemplified as suitable for the width of a typical kitchen wall, and it can be cut according to the shape of the wall before use. It is now possible to do this as well.
As shown in FIG. 1, a release paper 14 is attached to the kitchen wall surface protection sheet 10 before use.

The sheet body 11 is preferably made of a resin film and is transparent so as not to spoil the aesthetic appearance of the wall surface W of the kitchen K. However, it is also possible to print a marble-like or wood-grain pattern to make the sheet double as an opaque, patterned wall surface W decoration.
The type of resin film is not particularly limited, and examples include polyethylene terephthalate film, polyethylene film, and vinyl chloride film, but polyethylene terephthalate film is preferable because it has high transparency and excellent heat resistance and abrasion resistance.
The thickness of the resin film is also not particularly limited, but is preferably 30 to 100 μm, more preferably 40 to 70 μm.

The adhesive layer 12 is made of adhesive and is laminated on the back surface of the sheet body 11.
The adhesive layer 12 is preferably transparent so as not to spoil the aesthetic appearance of the wall surface W of the kitchen K. The surface of the adhesive layer 12 opposite to the interface with the sheet body 11 serves as a bonding surface to be bonded to the wall surface W of the kitchen K.
The type of adhesive is not particularly limited, and examples include epoxy adhesives and acrylic adhesives, but acrylic adhesives are preferred because they have excellent transparency.
The thickness of the adhesive layer 12 is also not particularly limited, but is preferably 20 to 40 μm, more preferably 25 to 35 μm.
The form of the adhesive layer 12 is not particularly limited either, but an example is to form it by applying an adhesive to the back surface of the sheet body 11 and drying it.

As shown in FIGS. 1 to 3, the bonding surface of the adhesive layer 12 is not flat, and a large number of small flat cylindrical convex portions 12a are provided in the form of lattice points.
As a result, when the bonding surface of the adhesive layer 12 is brought into contact with the wall surface W of the kitchen K, mainly only the convex portions 12a adhere to the wall surface W, and between the adjacent convex portions 12a, A gap is formed to allow air to circulate.
As shown in the figure, since this gap communicates with the outer edge of the kitchen wall surface protection sheet 10, air that has entered between the bonding surface and the wall surface W can naturally escape to the outside through the gap, or Alternatively, it is possible to easily expel it to the outside by using a spatula or the like.

The diameter, interval, height, and other dimensions of the convex portions 12a are not particularly limited, but examples include a diameter of 10 to 30 μm, a spacing of 50 to 150 μm, and a height of 5 to 25 μm.
Further, the shape of the convex portion 12a is not limited to that shown in the figure, and as long as the gap between the bonding surface and the wall surface W can communicate with the outer edge of the kitchen wall surface protection sheet so that air can be expelled to the outside, Examples include a hemispherical shape, a prismatic shape, an elliptical columnar shape, a conical shape, a truncated conical shape, a quadrangular pyramidal shape, and a rectangular shape.

The coating layer 13 is made of a coating agent, and the surface of the sheet body 11 opposite to the interface with the adhesive layer 12 is the outermost coated surface of the kitchen wall protection sheet 10.
The coating layer 13 is laminated on the surface of the sheet body 11 to provide slipperiness. This makes it difficult for dirt to adhere to the outermost surface of the kitchen wall protection sheet 10, and even if it does adhere, it is easy to remove. Since the outermost surface is a smooth coated surface, it is easy to attach the kitchen wall protection sheet 10 to the wall W and to remove air if it is trapped.

Here, the type of coating agent used for the coating layer 13 is not particularly limited, and examples include fluorine-based resin coating agents and acrylic resin coating agents. A resin coating agent is preferred.
Further, it is preferable that the contact angle of the coated surface of the coat layer 13 with respect to edible oil is 60° or more when measured by the θ/2 method. In this way, the coated surface repels cooking oil well and prevents dirt from adhering to it. A more preferable contact angle is 70° or more.

As shown in FIG. 1, a release paper 14 is attached to the bonding surface of the adhesive layer 12 before the kitchen wall surface protection sheet 10 is used.
This prevents dust and the like from adhering to the adhesive layer 12, resulting in a decrease in adhesive strength and poor appearance.
When using the kitchen wall surface protection sheet 10, the release paper 14 is peeled off from the bonded surface to expose the bonded surface and pressed against the wall surface W, as shown in FIG.
The type of release paper 14 is not particularly limited, but it may be one that has a large number of minute recesses that can receive the protrusions 12a on the bonding surface of the adhesive layer 12.

Next, Examples and Comparative Examples of the present invention will be given to further clarify the content of the present invention.
As an example, a kitchen wall surface protection sheet was prepared in which a 28 μm thick adhesive layer made of an acrylic adhesive was laminated on the back side of a sheet body made of a 50 μm thick polyethylene terephthalate film whose surface was coated with fluorine. In the examples, minute convex portions are formed on the bonding surface of the adhesive layer.
Further, as Comparative Example 1, a kitchen wall surface protection sheet was prepared in which a 28 μm thick adhesive layer made of an acrylic adhesive was laminated on the back side of a sheet body made of a 50 μm thick polyethylene terephthalate film.

A sample measuring 15 mm in length and 150 mm in width was cut out from the kitchen wall protection sheets of Examples and Comparative Example 1. A friction test was conducted under the conditions of a load of 1.96 N, a friction distance of 100 mm, and a speed of 30 reciprocations/min by contacting with a stainless steel surface (a JISL0803-compliant white cloth for testing (Kanakin No. 3) was installed).
For Example and Comparative Example 1, approximately 2 μl of olive oil (manufactured by Ajinomoto Co., Inc.) was dropped on the surface of the sample before the friction test, at the time of 100 reciprocations, and at the time of 1000 reciprocations of the friction test, and the temperature condition was 23 ° C. Below, the contact angle between the sample surface and the edible oil was measured using a solid-liquid interface analysis device "Drop Master 300" (manufactured by Kyowa Interface Science Co., Ltd.). Measurements were performed on three samples each for Example and Comparative Example 1, and the average value was calculated.
The results are shown in Table 1 below.

From Table 1, it was confirmed that in the Examples, due to the presence of the coating layer made of fluorine coat, the oil repellency was higher than in Comparative Example 1, and it was difficult for edible oil to adhere and stain.
Furthermore, in the examples, it was confirmed that the durability of the coating layer was excellent and the oil repellency ability superior to that of Comparative Example 1 was maintained.

Next, as Comparative Example 2, we used "Removable Transparent Sheet 3-Layer Type" (manufactured by Toyo Aluminum Echo Products Co., Ltd.), and as Comparative Example 3, we used "Adsorption Sheet Transparent that can be applied easily and neatly" (manufactured by Toyo Aluminum Echo Products Co., Ltd.). Got ready.
For Examples and Comparative Examples 2 and 3, after preparing test pieces by cutting them into 25 mm width x 150 mm length, each test piece was pasted on a SUS304 steel plate (surface finish BA), and the top of the pasted test piece was It was crimped by making one reciprocation with a 2 kg rubber roller. Under 50% humidity conditions, JIS A peel test was conducted in accordance with Z0237. Here, the peeling speed is 300 mm/min, and the peeling is performed at 180°. The maximum load required for peeling off was measured. Note that detailed conditions not described here shall comply with JIS Z0237.
The results are shown in Table 2 below.

Table 2 shows that in the example, the adhesive strength was stronger than in comparative example 3 when the pasting time was short (after 1 minute, after 24 hours), and it was prevented from unintentionally peeling off from the wall surface. It was confirmed that the adhesive strength did not become excessively large even if the adhesive was attached for a long time (after 192 hours), and that it was easy to peel off from the wall surface.

In addition, the presence or absence of adhesion of the adhesive was visually confirmed at the locations where the kitchen wall protection sheets of Examples and Comparative Examples 2 and 3 were removed.
The results are shown in Table 3 below.

From Table 3, it can be seen that in Comparative Examples 2 and 3, there is a tendency for the adhesive to transfer when pasted on the object for a long time, whereas in the example, even when pasted on the object for a long time, the adhesive It was confirmed that no transfer was observed.

The embodiments and examples disclosed herein are illustrative in all respects and are not restrictive. The scope of the present invention is indicated by the claims, and includes all modifications and variations within the scope of the claims and equivalents thereto.

For example, in the embodiment, the kitchen wall surface protection sheet 10 has a three-layer structure of the sheet body 11, the adhesive layer 12, and the coating layer 13, but another layer is formed between the sheet body 11 and the adhesive layer 12, and the sheet It can also be laminated between the main body 11 and the coating layer 13.
Examples of such layers include printed layers and antifungal coating layers.
In addition, in the embodiment, the kitchen wall surface protection sheet 10 is a single layer, but as in Patent Document 1, it is assumed that a plurality of layers are laminated, and when the front sheet gets dirty, it is peeled off and the back sheet is replaced. It may be made to appear on the front side.

10 Kitchen wall surface protection sheet 11 Sheet body 12 Adhesive layer 12a Convex portion 13 Coating layer 14 Release paper K Kitchen W Wall surface

Claims (6)

A sheet that is attached to a kitchen wall to protect the wall from oil stains,
A sheet body made of resin film,
The sheet is laminated on the back side of the sheet body, and the surface to be bonded to the kitchen wall is dotted with a large number of minute protrusions, and only the protrusions stick to the wall surface , and the protrusions and other parts are separated from each other. An adhesive layer made of the same adhesive ,
a coat layer laminated on the surface of the sheet body,
A kitchen wall surface protection sheet, wherein a gap is formed between adjacent protrusions to allow air circulation, and the gap communicates with an outer edge of the sheet. The kitchen wall surface protection sheet according to claim 1, wherein the height of the convex portion is 5 to 25 μm. The kitchen wall surface protection sheet according to claim 1 or 2 , wherein the coat layer is made of a fluorine coat. The kitchen wall surface protection sheet according to any one of claims 1 to 3, wherein the coated surface on which the coated layer is laminated has a contact angle with respect to edible oil of 60° or more when measured by the θ/2 method. The kitchen wall protection sheet according to any one of claims 1 to 4, wherein the sheet main body is made of a polyethylene terephthalate film having a thickness of 30 to 100 μm. The kitchen wall surface protection sheet according to any one of claims 1 to 5, wherein the adhesive layer is made of an acrylic adhesive having a thickness of 20 to 40 μm.

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