Resin components and countertops or sinks for residential facilities

Abstract

To provide a top plate or a sink for household equipment which can make a scratch less conspicuous, and can further maintain excellent appearance for long period of time.SOLUTION: A configuration of a resin member 150 is a resin member in which an aggregate 154 is dispersed in a base material of a resin, in which a surface 150a is subjected to uneven treatment, and when surface glossiness of the resin member 150 is represented by x(%) and an average value of a contact area per one pattern in the uneven treatment is represented by y(mm2), x and y are within a range of the following expression of y<-0.05(x-12)2+6.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a resin member having aggregate dispersed in a resin base material, and to a countertop or sink for housing equipment using the same. [Background technology]

[0002] In recent years, the mainstream kitchens are system kitchens that have multiple storage spaces (cabinets) under a worktop made of a single tabletop. The worktop, which covers the entire upper surface of the kitchen, is equipped with a built-in stove, sink, and a cooking space, which is a flat table surface mainly used for cooking.

[0003] The top plate of the worktop is made of synthetic resin such as artificial marble or a metal plate such as stainless steel. For example, the kitchen counter in Patent Document 1 has a surface layer of synthetic resin-based artificial marble. According to Patent Document 1, discoloration and deformation are unlikely to occur even at high temperatures from a range, and defects such as cracks and delamination are unlikely to occur.

[0004] The artificial marble kitchen counter as described in Patent Document 1 has the advantage of being highly aesthetic and excellent in design. However, the artificial marble kitchen counter (top) is easily scratched by contact with cooking utensils and tableware. For this reason, there is a drawback in that the scratches are easily noticeable and the aesthetics are easily lost as the period of use increases.

[0005] Therefore, the inventors developed a resin member in which aggregate colored in a color similar to that of the resin base material is dispersed in the base material and the surface is treated to have an uneven surface (Patent Document 1).By using this resin member on the countertop of a system kitchen, it is possible to prevent scratches on resin members such as artificial marble from being noticeable and to maintain a high level of aesthetics for a long period of time. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent application 2019-061847 Summary of the Invention [Problem to be solved by the invention]

[0007] As a result of further investigation, the inventors found that scratches on the resin member become less visible under certain conditions, which meant that there was room for further improvement in the resin member of Patent Document 1.

[0008] In view of the above problems, the present invention aims to provide a countertop or sink for residential facilities that can make scratches less noticeable and maintain a high level of aesthetic appearance for a longer period of time. [Means for solving the problem]

[0009] In order to solve the above problems, a typical configuration of the resin member according to the present invention is a resin member in which aggregate is dispersed in a resin base material, and the surface is treated with unevenness. The surface gloss of the resin member is defined as x (%), and the average area of ​​each pattern in the unevenness treatment is defined as y ( mm 2 ), x and y are expressed as follows: y<-0.05(x-12) 2 +6".

[0010] According to the above-mentioned configuration, since the surface of the resin member is unevenly processed, scratches caused by contact with cooking utensils or tableware (hereinafter referred to as cooking utensils, etc.), i.e. scratchesThis makes it possible to maintain the high aesthetic appearance of the resin member for a long period of time. Furthermore, since aggregates harder than the resin are dispersed, even if the base resin is scraped off by contact with a cooking utensil or the like, the aggregates are exposed, preventing further scraping of the resin. Furthermore, by making the surface gloss of the resin member and the average contact area per handle satisfy the above formula, scratches on the surface of the resin member can be made less noticeable. This makes it possible to maintain the high aesthetic appearance for an even longer period of time.

[0011] The average height of the unevenness in the unevenness treatment is preferably 68 μm or more. This allows the bottom of the pot to come into contact with the convex parts when an object such as a hot pot is placed on the resin member, and prevents the bottom of the pot from coming into contact with the concave parts. This prevents the unevenness from becoming flat, and therefore prevents the hot pot or the like from leaving a mark.

[0012] In order to solve the above problems, a typical configuration of the top plate for residential equipment according to the present invention is characterized by using the above-mentioned resin member. With this configuration, it is possible to obtain the above-mentioned effects in the top plate for residential equipment. Examples of residential equipment include kitchens, kitchen counters, washbasin counters, tables, etc. Also, the same effects can be obtained by using the above-mentioned resin member for a kitchen sink. Effect of the Invention

[0013] According to the present invention, it is possible to provide a countertop or sink for residential facilities which can make scratches less noticeable and maintain a high level of aesthetic appearance for a longer period of time. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a diagram illustrating a system kitchen. [Diagram 2] FIG. 2 is a schematic cross-sectional view of a top plate according to the present embodiment. [Diagram 3]FIG. 13 is a diagram showing an example of the surface properties of a top plate. [Figure 4] 10A and 10B are diagrams illustrating a pattern on the surface of a resin member. [Diagram 5] FIG. 1 is a diagram showing the relationship between the area per pattern and the surface glossiness. [Figure 6] FIG. 1 shows a sample before and after a scratch test. [Figure 7] 4A and 4B are diagrams illustrating projections and recesses on the surface of a resin member. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. The dimensions, materials, and other specific values ​​shown in the embodiment are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In this specification and drawings, elements having substantially the same functions and configurations are given the same reference numerals to avoid repeated explanations, and elements not directly related to the present invention are not shown.

[0016] (System Kitchen (Kitchen 100)) FIG. 1 is a diagram illustrating a system kitchen according to this embodiment (hereinafter referred to as kitchen 100). As shown in FIG. 1, kitchen 100 of this embodiment is a so-called system kitchen equipped with multiple storage units (cabinets) under a single worktop 110. Worktop 110 is made of stainless steel and covers the entire upper surface of kitchen 100. Worktop 110 is also provided with a built-in stove 112, cooking space 114, which is a flat table surface and a kitchen counter mainly used for cooking, and sink 116.

[0017] Under the countertop 110 are various storage compartments, such as a stove cabinet 120 in which the stove 112 body is installed, a base cabinet 130 corresponding to the cooking space 114, and a sink cabinet 140 in which the sink 116 is installed. Each storage compartment functions as a storage space, and the free space within the storage compartment also accommodates wiring to the stove 112, and water supply and drainage pipes to the sink 116 and the faucet.

[0018] In this embodiment, the countertop 110 of the system kitchen 100 is shown as an example of a countertop or sink for residential equipment using a resin member, but the present invention is not limited to this. The resin member of this embodiment can also be used as a countertop for residential equipment such as a kitchen counter, a washbasin counter, or a table.

[0019] (Tabletop 110 (resin material)) FIG. 2 is a schematic cross-sectional view of the top plate 110 of this embodiment. The top plate 110 of this embodiment is made of a resin member 150 whose main component is methacrylic resin. As shown in FIG. 2, the resin member 150 constituting the top plate 110 has a surface 150a that is unevenly treated. This makes it possible to make scratches caused by contact with cooking utensils or tableware (hereinafter referred to as cooking appliances 102) less noticeable. Therefore, it is possible for the top plate 100 made of the resin member 150 to maintain a high level of aesthetic appearance for a long period of time.

[0020] FIG. 3 is a diagram showing an example of the surface properties of the top plate 110. In particular, in this embodiment, as shown in FIG. 3, a rock-like texture is applied. The rock-like texture is made up of irregular curves, and "irregular" means that the height, spacing, and curvature of the peaks and valleys are irregular. This makes it possible to more effectively make scratches caused by contact with the cooker 102 less noticeable, thereby enhancing the above-mentioned effect. If the surface were made of regular irregularities, scratches and the heat generated by high-temperature pots would be more likely to be noticeable. Trace However, the unevenness is not limited to the rock surface finish, and other finishes and patterns are also possible.

[0021] Referring again to Fig. 2, as shown in Fig. 2, the top plate 110 has large-diameter aggregates 154 and small-diameter fillers 156 dispersed in a resin member 150, which is a base material. Any material can be used for the aggregates 154 and the fillers 156 as long as it is hard, and for example, both can be made of silica. The main difference between the aggregates 154 and the fillers 156 is the particle size, with the aggregates 154 having a larger diameter than the fillers 156.

[0022] In particular, in this embodiment, the surface gloss of the resin member 150 constituting the top plate 110 is set to x (%), and the surface gloss of each pattern in the uneven processing is set to x (%). area The average value of y(mm 2 ), then x and y are expressed as "y<-0.05(x-12) 2 +6 (Formula 1)". This makes scratches on the surface 150a of the resin member 150 less noticeable. Therefore, it becomes possible to maintain the excellent aesthetic appearance for a longer period of time.

[0023] In this embodiment, the average height of the unevenness in the unevenness treatment applied to the surface 150a of the resin member 150 constituting the top plate 110 is set to 68 μm or more. As a result, when an item such as a pot is placed on the resin member 150, the bottom surface of the pot comes into contact with the convex parts. This makes it possible to prevent the bottom surface of the item from coming into contact with the concave parts. Therefore, High temperature pan The bottom surface of the resin member 150 Pot ruins It is possible to preferably prevent the above.

[0024] Next, a scratch test of the resin member 150 will be described with reference to Fig. 4 and Fig. 5. Fig. 4 is a diagram for explaining the pattern on the surface of the resin member 150. Scratch test To do this, first, a pattern extraction process is performed. In this experiment, a ceramic teacup was dragged against a sample of a resin member 150 painted with white paint in a circle with a diameter of 10 cm with a vertical load of 2 kgf, and the surface of the sample was abraded. Wear out This causes the coating to peel off, exposing the surface of the base material.

[0025] The method of calculating the area per pattern will be described. First, the above-mentioned surface treatment is performed on the surface of a sample of the resin member 150, and a surface image of the sample is generated. Next, the surface area of ​​the sample is compared with the number of pixels of the image to calculate the area per 1px. For example, if the surface area of ​​the sample is 170 x 120 mm 2 If the pixel count of the image is 739 x 521 px, the area per 1 px is 0.05 mm according to the formula "surface area of ​​sample / pixel count of image". 2 / px.

[0026] Then, further image processing is performed on the surface image of the sample, and island-like patterns 158 of the uneven pattern of the sample are extracted as shown in FIG. 4, and the number of pixels per pattern is measured. Next, the number of pixels per pattern is multiplied by the area per 1px (for example, 0.05 mm 2 / px) to calculate the area per pattern. For details, see "The area per pattern" Number of pixels (px) × area per 1px (mm 2 The area of ​​each pattern 158 is calculated by the formula "x1 / px (Equation 2)".

[0027] Using the above formula 2, the area per island-like pattern 158 of the surface image of the sample is calculated, and the average value is defined as the "area per pattern in the uneven processing, y (mm 2 The surface glossiness x (%) of the sample of the resin member 150 is as follows: Irradiate the light at an incident angle of 60 degrees. The gloss was measured using a gloss meter (PG-1M, manufactured by Nippon Denshoku Industries Co., Ltd.).

[0028] FIG. 5 is a diagram showing the relationship between the area per pattern and the surface glossiness. The vertical axis shows the area y (mm 2 ), and the horizontal axis represents the surface glossiness x (%) of the sample of the resin member 150. For a sample of an unpainted resin member 150, a ceramic teacup was dragged over the surface of the sample. The load condition was a vertical load of 2 kgf, the same as in the pattern extraction process. Then, a visual inspection was performed to see whether scratches were recognized. That is, if scratches were recognized in the visual inspection, it was determined that the scratches were recognized, and if scratches were not recognized in the visual inspection, it was determined that the scratches were not recognized. As shown in FIG. 5, when the gloss of the resin member 150 is 2.0%, the area of ​​one pattern is 1 mm 2 If the gloss of the resin member 150 is 2.0%, the scratch is not recognized. 2If the scratch is exceeded, the scratch will be noticeable.

[0029] When the gloss of the resin member 150 is 7.0%, the area of ​​each handle is 5 mm 2 If the area of ​​one handle is less than 5 mm, the scratch will not be recognized. 2 If the gloss of the resin material is 12%, the area of ​​each pattern is 6 mm 2 If the area of ​​each handle is less than 6 mm, the scratch will not be recognized. 2 If the scratch is exceeded, the scratch will be noticeable.

[0030] When the gloss of the resin member 150 is 17%, area 5mm 2 The damage will not be recognized if the damage is less than the following: area 5mm 2 When the gloss of the resin member 150 is 22%, the scratches are noticeable. area is 1mm 2 The scratch will not be recognized if it is less than area is 1mm 2 A scratch is noticeable when the scratch level exceeds this limit.

[0031] Fig. 6 shows the samples before and after the scratch test. The upper row shows the samples with an area of ​​1.0 mm per handle. 2 The images are of a sample with a gloss of 2.0% and before and after the scratch test. The lower image shows a sample with an area of ​​1.6 mm per pattern. 2 and a gloss level of 2.0%.

[0032] The samples before the scratch test shown in the upper and lower left of Figure 6 had no scratches. The area per handle shown in the lower right of Figure 6 was 1 mm 2 In the sample shown in Fig. 6, scratches (inside the dashed circle) were observed after the scratch test. 2 In the sample, no scratches were observed even after the scratch test.

[0033] Considering the above results, it can be seen that if the gloss of the resin member 150 is too low or too high, scratches become easily noticeable. On the other hand, if the gloss of the resin member 150 is around 12%, scratches will not be noticeable even if the area per pattern is somewhat large. According to the inventors' consideration, scar This occurs due to the difference in gloss between the scratch and other parts, and it is presumed that the reason why scratches become less noticeable when the gloss of the resin member 150 is around 12% is because the gloss of the scratch is around 12%.

[0034] On the other hand, even if the gloss of the resin material 150 deviates from 12%, scratches will not be noticeable if the area per pattern is small. In other words, the relationship between gloss and pattern area is important. If the plots with the largest area per pattern at each gloss are joined, a quadratic curve with a vertex at "x=12, y=6" is drawn, as shown by the dashed line in FIG. 5. The approximate equation for this quadratic curve is "y<-0.05(x-12) 2 +6 (Equation 1)". Therefore, if x and y satisfy this equation, scratches on the resin member 150 will not be noticeable, and it will be possible to ensure a high level of aesthetic beauty for the tabletop 110.

[0035] Fig. 7 is a diagram illustrating the unevenness of surface 150a of resin member 150. Fig. 7(a) is a schematic diagram of the unevenness of surface 150a of resin member 150, and Fig. 7(b) is a diagram illustrating the relationship between the unevenness height and the presence or absence of pot marks. As shown in Fig. 7(a), the height from one convex to another in the unevenness in the unevenness treatment applied to surface 150a of resin member 150 is defined as unevenness height h, and the average value of the unevenness height h of the entire unevenness treatment of the sample is defined as the average unevenness height. unevenness A depth gauge (manufactured by Mitutoyo Corporation) was used to measure the height. The resin material 150 used is a dark color (dark gray) that makes scratches and pot marks more noticeable.

[0036] FIG. 7(b) shows whether or not a pan mark is generated when a pan (see FIG. 1) containing oil at 200° C. is placed on a sample of the resin member 150. As shown in FIG. 7(b), when the average height of the unevenness on the surface 150a of the resin member 150 is slightly less than 10 μm, it was confirmed that a pan mark is generated on the surface 150a of the resin member 150. In contrast, when the average height of the unevenness on the surface 150a of the resin member 150 is 68 μm or more, no pan mark is generated on the surface 150a of the resin member 150 even when a hot pan is placed on it. Therefore, it can be understood that by setting the average height of the unevenness in the unevenness treatment to 68 μm or more as in this embodiment, it is possible to suitably prevent the resin member 150 from being scratched by the bottom surface of an article such as a pan.

[0037] In the present embodiment, the resin member 150 is mainly made of methacrylic resin. However, the present invention can be applied to unsaturated polyester resin or vinyl ester resin in the same manner as well as methacrylic resin. Trace It is presumed that this is due to partial thermal deformation of the resin. Considering that the heat deformation temperature of methacrylic resin is 80 to 100°C, that of unsaturated polyester resin is 65 to 100°C, and that of vinyl ester resin is 100 to 165°C, the present invention can be applied to resins with a heat deformation temperature of around 100°C or close to 100°C (including 100°C).

[0038] Although the preferred embodiment of the present invention has been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to the above-described embodiment. It is clear that a person skilled in the art can think of various modifications or alterations within the scope of the claims, and it is understood that these also naturally belong to the technical scope of the present invention. [Industrial Applicability]

[0039] INDUSTRIAL APPLICABILITY The present invention can be used for a resin member having aggregate dispersed in a resin base material, and for a countertop or sink for housing equipment using the same. [Explanation of symbols]

[0040] 100...kitchen, 102...cooker, 110...top plate, 112...cooker, 114...cooking space, 116...sink, 120...cooker cabinet, 130...base cabinet, 140...sink cabinet, 150...resin member, 150a...surface, 154...aggregate, 156...filler, 158...handle

Claims

1. A resin member in which aggregate is dispersed in a resin base material, The surface is treated with irregular curved surfaces. When the surface gloss of the resin member is x (%) and the average area of ​​each pattern in the uneven surface treatment is y (mm2), The x and y are represented by the following formula: y<-0.05(x-12) 2+6 The resin member is characterized in that

2. 2. The resin member according to claim 1, wherein the average height of the projections and recesses formed in the projection and recess treatment is 68 [mu]m or more.

3. A top plate for housing equipment, comprising the resin member according to claim 1 or 2.

4. A sink, comprising the resin member according to claim 1 or 2.

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