JP5631667B2 - Metal plate - Google Patents

Description

  More particularly, the present invention relates to a metal plate suitable for use in an environment where tableware comes into contact and water frequently adheres, such as a sink in a kitchen or a top plate of a counter.

  In recent years, with the spread of face-to-face kitchens, the top plate and sink of kitchens and counters are increasingly seen from the dining room and living room. For this reason, the appearance and appearance of the top board and sink are particularly demanded. In order to actually bring out the appearance of the top plate and the sink, it is conceivable that a colored coating is applied to the surface by coating or spraying.

  By the way, the sink or the like of this kitchen is manufactured by press forming a stainless steel plate. Such a stainless steel plate has been used for many years as a material for a sink because it is particularly excellent in terms of durability, and has excellent corrosion resistance and a clean feeling.

  If the sink made of stainless steel sheet is actually painted with paint, and if the tableware or utensils actually touch the sink, the surface of the paint such as sledge, oysters, and indentations It comes with a variety of wrinkles. In particular, since the surface of the conventional sink is extremely smooth, there is a drawback that the paint falls off and becomes visually noticeable if wrinkles are formed on such a smooth surface.

  In addition, when washing dishes and utensils, water droplets adhere to each part of the sink, and some of the washed filth and substances such as detergent are included in the water droplets. Furthermore, tap water contains a small amount of substances such as calcium hydroxide and magnesium. For this reason, when the water droplets adhering to the sink at the time of cleaning are dried, the portion becomes a spot, which remains as a stain-like stain. For this reason, in order to remove such stain-like dirt, there are many cases in which the sink is wiped with a gold scrubbing brush or the like, but the stainless steel fiber of the gold scrubbing rubs against the surface of the sink and only the wrinkles adhere to the sink. In addition, there is a problem that the coating applied to the surface peels off.

  In addition, conventionally, from the viewpoint of improving the anti-fouling property of the surface, a technique for randomly providing specific fine irregularities on the surface of a stainless steel plate applied to the sink has been proposed (see, for example, Patent Document 1). .)

  In the stainless steel sheet described in Patent Document 1, in order to prevent scratch resistance and contamination due to adhesion of water droplets or the like on the surface, the height is in the range of 3 to 50 μm and 20 per 25.4 mm in length. In the range of ˜1000, irregularities are randomly projected in the rolling direction of the steel sheet.

  We also propose a surface protection structure that forms an embossed pattern with multiple hemispherical protrusions protruding on the smooth surface only on the bottom surface of the sink, and optimizes the height of the apex of the protrusions and the spacing between the protrusions. (For example, see Patent Document 2). According to this surface protection structure, the embossed pattern comes into contact via one point on each convex portion, and by reducing the contact area, the line and surface on the convex portion are not contacted. In addition, since wrinkles associated with such contact can be made discrete in a dot shape, it becomes possible to make it visually inconspicuous.

Japanese Patent Laid-Open No. 2004-137796 JP 2009-191605 A

  However, when coloring paint is applied to the sink formed with the embossed pattern as shown in Patent Documents 1 and 2 described above, it is possible to make the wrinkles associated with the contact of tableware and utensils more visually inconspicuous. . However, if the sink is wiped with a gold scrubbing brush to remove stain-like stains attached to the surface of the sink, etc., fouling due to rubbing of the stainless steel fiber of the gold scrubbing on the sink surface and peeling of the paint will not occur. It still occurs.

  Accordingly, the present invention has been devised in view of the above-described problems, and relates to a metal plate with a colored coating used as a top plate of a kitchen sink or counter, and in particular, a stainless steel fiber of gold scrubbing is provided on the surface of the sink. An object of the present invention is to provide a metal plate capable of preventing wrinkle adhesion and paint peeling due to rubbing.

  In order to solve the above-mentioned problems, the inventor is a metal plate in which a plurality of minute recesses having a maximum diameter of 450 μm or less is formed, and the interval between the adjacent minute recesses is 640 μm or less. Even if a minute coating is applied to the surface layer of the metal plate, and a part or all of the colored coating applied in addition to the minute recess is peeled off during practical use, A metal plate that invents the color with the accumulated colored paint was invented.

In order to solve the above-described problem, the metal plate to which the present invention is applied is a metal plate in which a plurality of minute recesses having a maximum diameter of 450 μm or less is formed, and the interval between adjacent minute recesses is 640 μm or less. The fine recesses are disposed so that the surface layer of the metal plate is colored , and an embossed pattern with convex portions having a diameter of 1000 μm to 2000 μm is provided on the fine recesses. .

At this time, each micro recesses, but it may also the depth 5 to 30 [mu] m.

  According to the present invention having the above-described configuration, even when all or part of the colored coating is peeled off due to rubbing of the stainless steel fibers of the gold scrubbing on the sink surface, the metal plate is formed by the paint remaining in the minute recesses. The color can be exhibited from the whole.

It is a perspective view which shows the surface of the metal plate to which this invention is applied. It is a top view which shows the surface of the metal plate to which this invention is applied. It is a side view which shows the surface of the metal plate to which this invention is applied. It is a figure for demonstrating the size of a micro recessed part. It is a figure which shows the state in which the coating material is accumulate | stored inside the micro recessed part. It is a figure which shows the example which one part or all part in the smooth surface peeled because the stainless steel fiber rubbed against the surface of the metal plate. It is a figure which shows the example comprised so that this micro recessed part may become a curved surface convex upwards from a peripheral end to a bottom face. It is a figure for demonstrating the other form of a micro recessed part. It is a figure which shows the space | interval A and B between micro recessed parts.

  Hereinafter, as an embodiment of the present invention, a metal plate used for a kitchen sink, a counter top plate, a door or the like will be described in detail with reference to the drawings.

  1 is a perspective view showing a surface of a metal plate 1 to which the present invention is applied, FIG. 2 is a plan view thereof, and FIG. 3 is a side view thereof.

  The metal plate 1 is obtained by forming an embossed pattern by providing the convex portions 12 on the surface of the metal substrate 11 on which a plurality of minute concave portions 13 are formed. The surface layer of the substrate 11 is colored with the paint 14.

  The substrate 11 is, for example, a stainless steel plate, and any type of austenite type, martensite type, ferrite type, precipitation hardening type, and two-phase type can be used. Moreover, as an example of the substrate 11, titanium, aluminum, copper, iron, brass or the like may be used in addition to the stainless steel plate.

  A plurality of the convex portions 12 are provided on the smooth surface 22 of the substrate 11 so as to protrude. The shape of the convex portion 12 is hemispherical, and the diameter thereof is larger than that of the minute concave portion 13 described later, and can be set in a range of, for example, 1000 to 2000 μm. The range can be 0.15 mm. In the following description, the plurality of convex portions 12 and the flat portions between the convex portions 12 are collectively referred to as an embossed pattern 41. The convex portions 12 are desirably arranged regularly in the horizontal direction and the vertical direction of the surface 22, but the present invention is not limited to this, and a plurality of convex portions 12 are formed discretely. May be. However, since the embossed pattern 41 is formed at a position that can be visually recognized by the user, even when the convex portions 12 are formed discretely, when it is necessary to ensure the design, It is desirable that a pattern that does not cause visual discomfort is created by the assembly. Thereby, the embossed pattern 41 comprised by the collection of the some convex part 12 can eliminate the uncomfortable feeling visually felt by the user of the system kitchen 2.

  Further, as a method for creating an embossed pattern, embossing with a gentle base can be applied by using a method described in Japanese Patent Laid-Open No. 2009-136904.

  The minute recesses 13 form a plurality of depressions on the smooth surface 22 of the substrate 11. Further, the minute recess 13 is also provided in the protrusion 12. That is, when the metal plate 1 is manufactured, it is assumed that the convex portion 12 is processed after the minute concave portion 13 is first formed in the substrate 11. For this reason, although the minute recessed part 13 will be formed also in the convex part 12, it is not limited to this. The minute recesses 13 can be formed on the surface of the substrate 11 by, for example, rolling using an engraving roll, pressing, electrolytic polishing, etching, or the like.

  The size of the minute recess 13 is a maximum diameter of 450 μm or less. The maximum diameter here corresponds to the diameter of a circumscribed circle circumscribing the minute recess 13 as shown in FIG. 4, for example, and is the largest of the diameters of the minute recess 13. Moreover, this micro recessed part 13 is made into the range whose depth is 5-30 micrometers. The number of the minute recesses 13 per unit area is larger than that of the protrusions 12.

  As the coating material 14 to be coated on the surface layer of the substrate 11 provided with such convex portions 12 and minute concave portions 13, various conventionally known coating materials can be used. Examples of the paint 14 include hydrophilic paints, water-repellent paints, oil-repellent paints, fluorine treatment agents, fluorine-containing coating materials containing fluorine, silica-based paints, acrylics described in Japanese Patent No. 4012939 Resin-based resin materials, clear paints (which are paints different from the color of the base and make the color of the base visible), other functional paints, and the like can be used.

  As a solvent to be mixed with the paint 14, it is necessary to use a solvent having leveling properties in order to uniformly coat. In order to impart leveling properties, additives such as surfactants and high-boiling solvents may be added. The additive is preferably a volatile one that decomposes and evaporates in the firing stage after coating. For example, when the paint uses alcohol as a solvent, it is desirable to add butyl cellosolve as an additive to the extent that the required boiling point can be obtained.

  The metal plate 1 having the above-described configuration is in a state in which the paint 14 is applied over the entire surface of the substrate 11 as shown in FIG. The paint 14 is applied on the smooth surface 22 of the substrate 11 and the surface of the convex portion 12. Moreover, in the location where this micro recessed part 13 is provided, as shown in FIG. 5, the coating material 14 is accumulated in the inside of the micro recessed part 13.

  However, when the metal plate 1 immediately after manufacture is put to practical use, for example, on the bottom surface of the sink or the top plate of the counter, the sink is rubbed with a gold scrub to remove attached stains. There is. As a result, adhesion of wrinkles and peeling of the coating occurs due to rubbing of the stainless steel fibers of the gold scrub on the surface of the metal plate 1. FIG. 6 shows an example in which a part or all of the smooth surface 22 is peeled off by rubbing the stainless steel fiber of the gold scrub on the surface of the metal plate 1. At this time, the paint 14 accumulated in the minute recess 13 remains without being peeled even when it is rubbed with a stainless steel fiber of gold scrub.

  Accordingly, even when all or part of the colored coating is peeled off by rubbing the stainless steel fibers of the gold scrubber, the color from the entire metal plate 1 is changed by the paint 14 remaining in the minute recesses 13. It will be possible to demonstrate.

  In addition, when the maximum diameter of this micro recessed part 13 is more than 450 micrometers, it will become larger than the diameter of the stainless steel fiber of a gold scrubber. That is, since the diameter of the minute recess 13 becomes larger, the stainless steel fiber of gold scrubbing may get into the minute recess 13, and as a result, the stainless steel fiber of gold scrubbing on the paint 14 accumulated in the minute recess 13. Will come into contact. In some cases, the paint 14 itself accumulated in the minute recess 13 may be peeled off due to the rubbing of the stainless steel fibers of the gold scrubber. For this reason, in this invention, the maximum diameter of the micro recessed part 13 is 450 micrometers or less.

  Further, when the depth of the minute recess 13 is less than 5 μm, the color tone cannot be visually recognized. For this reason, the minimum value of the depth of the minute recess 13 is set to 5 μm or more. However, since the film thickness of the paint 14 may be about 10 μm, the minimum value of the depth of the minute recesses 13 is desirably 10 μm or more in consideration of the film thickness of the paint 14. In addition, when the depth of the minute recess 13 is 20 μm or more, the color due to the paint 14 accumulated therein is more prominently exhibited. Therefore, the depth of the minute recess 13 may be 20 μm or more. desirable.

  Moreover, when the depth of the micro recessed part 13 exceeds 30 micrometers, the mechanical strength and durability of board | substrate 11 itself will deteriorate. In addition to this, when the depth of the minute recesses 13 exceeds 30 μm, the amount of the paint 14 accumulated in the minute recesses 13 increases, and the amount of the paint 14 necessary for painting the surface of the substrate 11 increases. It also becomes a factor that lowers cost performance. For this reason, the maximum depth of the minute recess 13 is set to 30 μm.

  In addition, as shown in FIG. 7, this micro recessed part 13 may be comprised so that it may become a curved surface convex upwards from the peripheral end 51 to the bottom face 52. As shown in FIG. Thereby, when the coating material 14 is applied, it can be easily poured into the minute recesses 13, and the coating material 14 can be evenly accumulated between the minute recesses 13. Of course, the cross-sectional shape of the minute recess 13 may be replaced with another form.

  In addition, when the above-described coloring is applied to the minute recesses 13, a unique color emitted from the minute recesses 13 may be felt. For this reason, in order not to feel the difference in color emitted between the minute recess 13 and the region other than the minute recess 13, the region other than the minute recess 13 may be polished in advance.

  The shape of the minute recess 13 is not limited to the above-described one. For example, a rectangular shape as shown in FIG. 8 (a), a triangular shape as shown in FIG. 8 (b), and FIG. 8 (c). As shown in FIG. 3, it may be configured in a polygonal shape. As a result, a metal plate with improved design can be obtained.

  In addition, this invention is because the convex part larger diameter than the said micro recessed part was provided on the metal plate in which the maximum diameter was 450 micrometers or less in diameter and the several micro recessed part whose depth is 5-30 micrometers was formed. The embossed pattern is formed, and the metal plate is colored on the surface layer, and even when a part or all of the colored coating applied other than the minute recess is peeled off in actual use, the minute recess It may be embodied as a method of exhibiting the color of the metal plate, in which the color is exhibited from the entire embossed plate with the colored coating by the colored paint accumulated in the above.

  Hereinafter, in order to confirm the effect of the metal plate 1 to which the present invention is applied, an experiment described below was performed.

  In this experimental examination, the crease due to the gold scrub with respect to the distances A and B between the adjacent minute recesses 13 was evaluated. As shown in FIG. 8, the minute recesses 13 are regularly arranged vertically and horizontally on the surface 22, and the interval between the minute recesses 13 adjacent in the vertical or horizontal direction is set as an interval A, and the minute recesses adjacent in the oblique direction. An interval from 13 is defined as an interval B.

  Table 1 shows the conditions of the intervals A and B and the experimental results. In the experiment, each metal plate 1 adjusted to the intervals A and B in Table 1 was rubbed 10 times with a gold scrubber and visually evaluated for its tackiness. The tackiness was evaluated in the minute recess 13 and in the flat portion on the surface of the substrate 11. For the evaluation items for stickiness, “○” corresponds to the case where almost no wrinkles are found, “△” corresponds to the case where slight wrinkles are confirmed, and “×” corresponds to the case where many wrinkles are confirmed. .

  From the results shown in Table 1, the evaluation item was “◯” because the inside of the minute recess 13 was hardly wrinkled even when rubbed with a gold scrubber and the coating was not peeled off.

  Further, from the results of Table 1, it was found that the evaluation item is “◯” when the interval A is 0.15 mm or less and the interval B is 0.39 mm or less. That is, by further narrowing the interval between the minute recesses 13, it becomes possible to improve the tackiness even in the flat portion on the surface of the substrate 11 between the minute recesses 13. The reason is that, since the interval between the flat portions is short, the length of the wrinkles attached to the portions becomes short and cannot be recognized.

  Further, from the results of Table 1, it was found that the evaluation item was “Δ” or more when the interval A was 0.33 mm or less and the interval B was 0.64 mm or less. The reason for this is that since the interval between the flat portions is short, the length of the wrinkles attached to the portions becomes short and it is difficult to recognize.

  For this reason, it is possible to improve the tackiness even in the flat portion of the surface of the substrate 11 between the minute recesses 13 by setting the interval between the minute recesses to be in contact with phosphorus to 0.64 mm or less.

DESCRIPTION OF SYMBOLS 1 Metal plate 11 Substrate 12 Convex part 13 Micro recessed part 14 Paint 22 Surface 41 Embossed pattern

Claims (2)

A metal plate in which a plurality of minute recesses having a maximum diameter of 450 μm or less are formed, and the minute recesses are arranged so that the interval between adjacent minute recesses is 640 μm or less, and on the surface layer of the metal plate, A metal plate which is colored and is provided with an embossed pattern formed by convex portions having a diameter of 1000 μm to 2000 μm on the minute concave portions . The metal plate according to claim 1, wherein each of the minute recesses has a depth of 5 to 30 μm.

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