JP2010042575A - Decorative metal sheet and method for manufacturing it - Google Patents

Decorative metal sheet and method for manufacturing it Download PDF

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JP2010042575A
JP2010042575A JP2008207542A JP2008207542A JP2010042575A JP 2010042575 A JP2010042575 A JP 2010042575A JP 2008207542 A JP2008207542 A JP 2008207542A JP 2008207542 A JP2008207542 A JP 2008207542A JP 2010042575 A JP2010042575 A JP 2010042575A
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decorative
metal plate
sheet
convex portion
decorative metal
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JP5554480B2 (en
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Tatsuya Urushibara
達也 漆原
Naoya Imai
直也 今井
Seiji Ihara
誠司 井原
Tadashi Yamachi
理嗣 山地
Kyo Tominaga
亨 富永
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Okura Industrial Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a scratch resistance suitable to a decorative metal sheet suitably used for external decorations for electrical home appliances such as an internal wall of a unit bath, a door for a refrigerator and a cover for an air conditioner, a steel furniture, an elevator and an interior decorative material for an architectural structure, and to provide a method for manufacturing a decorative metal sheet with a good scratch resistance. <P>SOLUTION: In the decorative metal sheet, made by bonding a decorative sheet which is molded by embossing on a metal sheet to have fine projections, the upper faces of the projections are flat. In particular, the decorative metal sheet is characterized in that the area ratio of the projections occupied in the decorative sheet is ≥10% and <50%. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明はユニットバス内壁や、冷蔵庫のドア、エアコンカバーなどの家庭電化製品の外装や、鋼製家具、エレベーター、建築物内装材等に好適に用いられる化粧金属板、及びその製造方法に関する。特に爪等によるスクラッチ傷が目立ちにくい耐擦傷性を有する化粧金属板とその製造方法に関する。   The present invention relates to an exterior wall of a home electric appliance such as a unit bath inner wall, a refrigerator door, and an air conditioner cover, a decorative metal plate suitably used for steel furniture, an elevator, a building interior material, and the like, and a manufacturing method thereof. In particular, the present invention relates to a decorative metal plate having scratch resistance in which scratches caused by nails and the like are not conspicuous and a method for manufacturing the same.

化粧金属板は、ステンレス鋼板やめっき鋼板などの金属板の表面に熱可塑性樹脂からなる化粧シートが貼り合わされた複合材で、高強度で防水性に優れ、意匠性にも優れた材料である。そして化粧金属板に求められる性能のひとつに「耐スクラッチ性」がある。化粧金属板が爪などで引っ掻かれた時に入る傷を「スクラッチ傷」と呼ぶが、このような傷が「入りにくい性質」及び「入っても目立たない性質」を「耐スクラッチ性」と呼ぶ。   The decorative metal plate is a composite material in which a decorative sheet made of a thermoplastic resin is bonded to the surface of a metal plate such as a stainless steel plate or a plated steel plate, and is a material having high strength, excellent waterproofness, and excellent design. One of the performances required for decorative metal plates is “scratch resistance”. A scratch that enters when a decorative metal plate is scratched with a nail or the like is called a “scratch scratch”, but such a scratch is “a property that is difficult to enter” and a “a property that is not noticeable even if it enters” is called “scratch resistance”. .

耐スクラッチ性等の改善された化粧金属板として、特許文献1において、金属板上に架橋間平均分子量が150乃至1000である電離放射線硬化型樹脂及びヌープ硬度1300kg/mm2以上の球状無機粒子を含有する表面保護層が設けられた化粧金属板が提供されている。また特許文献2及び3において、ポリエステル樹脂中に一部が極性基を有するビニル重合体でカプセル化されたゴム状弾性体樹脂を微分散した樹脂組成からなる層を有する化粧金属板が提供されている。更に特許文献4において、金属板に特定粗さの表面模様を付与した後、金属板表面に透明な樹脂フィルムを被覆した化粧金属板が提供されている。しかしながら、化粧金属板に用いられる化粧シートの表面形状を検討して、耐スクラッチ性を向上させた化粧金属板は未だ提供されていない。   As a decorative metal plate with improved scratch resistance and the like, Patent Document 1 contains an ionizing radiation curable resin having an average molecular weight between crosslinks of 150 to 1000 and spherical inorganic particles having a Knoop hardness of 1300 kg / mm 2 or more on the metal plate. There is provided a decorative metal plate provided with a surface protective layer. Further, Patent Documents 2 and 3 provide a decorative metal plate having a layer composed of a resin composition in which a rubber-like elastic resin encapsulated with a vinyl polymer partially having a polar group in a polyester resin is finely dispersed. Yes. Furthermore, in Patent Document 4, a decorative metal plate is provided in which a surface pattern having a specific roughness is applied to a metal plate, and then the surface of the metal plate is covered with a transparent resin film. However, a decorative metal plate with improved scratch resistance has not yet been provided by examining the surface shape of the decorative sheet used for the decorative metal plate.

特許文献5の発明は化粧紙に係る発明であるが、化粧紙用の原紙上にウレタン系樹脂をバインダーとしたインキにより印刷層を設け、更に該印刷層上にウレタン系樹脂の盛り上げインキを用いて盛り上げ印刷を行い、凹凸模様を設けた化粧紙が提供されている。そして該化粧紙は、摩擦等による磨耗を凹凸模様の凸部のみで受ける為、擦過傷による白化現象が目立たない。しかしながらこの化粧紙の技術を化粧金属板に用いることはできなかった。なぜならば、化粧紙に盛り上げインキを盛り上げ印刷することは容易であっても、金属板に該印刷を機械的に連続して行うことは困難な為である。また金属板の表面に特許文献5にて提供される化粧紙を貼り付ける方法も考えられるが、化粧金属板は苛酷な条件で使用されることが多く、該化粧紙を用いるとインキが光によって変退色し、更には化粧紙が水で膨潤する恐れがある。   The invention of Patent Document 5 is an invention relating to decorative paper, but a printing layer is provided on a base paper for decorative paper with an ink using a urethane-based resin as a binder, and a raised ink of urethane-based resin is further used on the printing layer. The decorative paper with the uneven pattern is provided. And since this decorative paper receives the abrasion by friction etc. only by the convex part of an uneven | corrugated pattern, the whitening phenomenon by an abrasion is not conspicuous. However, this decorative paper technology could not be used for decorative metal plates. This is because, even if it is easy to print up the rising ink on the decorative paper, it is difficult to perform the printing continuously on the metal plate mechanically. Although a method of attaching the decorative paper provided in Patent Document 5 to the surface of the metal plate is also conceivable, the decorative metal plate is often used under harsh conditions. There is a risk of discoloration and further the decorative paper may swell with water.

特開平10−86275号公報Japanese Patent Laid-Open No. 10-86275 特開2003−291260号公報JP 2003-291260 A 特開2003−291261号公報JP 2003-291261 A 特開2004−216803号公報JP 2004-216803 A 特開平08−100397号公報Japanese Patent Laid-Open No. 08-1000039

ところでスクラッチ傷は、化粧金属板の表面が淡明色である場合よりも、黒色や紺色といった濃暗色である場合に特に目立つ。しかしながら、近年ユニットバス壁面等において、部分的に濃暗色のアクセントパネルを配置してメリハリを持たせたデザインが高評価を得ており、その為には濃暗色の化粧金属板が必須であった。そこで、濃暗色でありながら耐スクラッチ性に優れた化粧金属板の開発が要望されていた。   By the way, the scratch is particularly conspicuous when the surface of the decorative metal plate is a dark and dark color such as black or dark blue rather than when the surface of the decorative metal plate is light. However, in recent years, the dark and dark decorative metal plate has been indispensable for the design of the unit bath walls, etc., where dark accent panels are partially placed to give sharpness. . Therefore, there has been a demand for the development of a decorative metal plate that is dark and dark and has excellent scratch resistance.

従って、本発明が解決しようとする課題は、特に着色された化粧金属板に好適な耐スクラッチ性にすぐれた化粧金属板、及びその製造方法を提供することである。   Therefore, the problem to be solved by the present invention is to provide a decorative metal plate excellent in scratch resistance particularly suitable for a colored decorative metal plate, and a method for producing the same.

本発明によると、型押しによって成形された微細な凸部を有する化粧シートを金属板に貼り合わせてなる化粧金属板であって、前記凸部の上面が平らであることを特徴とする化粧金属板が提供される。
更に、前記化粧シートに占める前記凸部の面積割合が10%以上50%未満であることを特徴とする前記化粧金属板が提供される。
更にまた、前記凸部が離散型であることを特徴とする前記化粧金属板が提供される。
更にまた、前記凸部が連続型であることを特徴とする前記化粧金属板が提供される。
更にまた、前記化粧シートが着色されていることを特徴とする前記化粧金属板が提供される。
更にまた、前記化粧シートが透明もしくは半透明であり、着色及び/又は印刷が施された別のシートと貼り合わされた後、金属板に貼り合わされてなる前記化粧金属板が提供される。
更にまた、熱可塑性樹脂からなるシートの表面に、エンボスロールを用いて凸部を型押しして化粧シートを製造し、次いで該化粧シートと金属板を貼り合わせることを特徴とする前記化粧金属板の製造方法が提供される。
According to the present invention, there is provided a decorative metal plate obtained by laminating a decorative sheet having fine convex portions formed by embossing to a metal plate, and the upper surface of the convex portions is flat. A board is provided.
Further, the decorative metal plate is provided, wherein an area ratio of the convex portion in the decorative sheet is 10% or more and less than 50%.
Furthermore, the decorative metal plate is provided in which the convex portion is a discrete type.
Furthermore, the decorative metal plate is provided in which the convex portion is a continuous type.
Furthermore, the decorative metal plate is provided in which the decorative sheet is colored.
Furthermore, the decorative metal plate is provided in which the decorative sheet is transparent or translucent and is bonded to another sheet that has been colored and / or printed and then bonded to the metal plate.
Furthermore, the decorative metal plate is characterized in that a decorative sheet is manufactured by embossing a convex portion using an emboss roll on the surface of a sheet made of a thermoplastic resin, and then the decorative sheet and the metal plate are bonded together. A manufacturing method is provided.

本発明では、化粧金属板に貼り合わされる化粧シートに、微細な凸部を型押しすることによって、化粧金属板表面に微細な凸部を成形し、化粧金属板が引っ掻かれたときに、引っ掻いたもの(例えば爪等)が微細な凸部のみに当たり、ベース部には当たらないようにした。その為スクラッチ傷は、微細で不連続な傷となり、大きな連続した傷になりにくい。そして本発明者らは、表面に微細な凸部を有する化粧金属板が引っ掻かれた時、凸部上面が押し潰され、平らに変形することを発見し、凸部の上面を予め平らにするという手段を講じた。凸部の上面が予め平らであると、凸部が押し潰されても外観の変化が少なくなり、よってスクラッチ傷が目立たなくなるのである。
尚、本発明の化粧金属板は、爪で引っ掻かれた時に耐スクラッチ性を発揮することはもちろんであるが、掃除用のスポンジやたわし等によって擦られたときや、化粧金属板の製造から施工までの間に化粧金属板同士が擦れたときにも、耐スクラッチ性を発揮する。
In the present invention, the decorative sheet to be bonded to the decorative metal plate, by embossing the fine convex portion, to form the fine convex portion on the decorative metal plate surface, when the decorative metal plate is scratched, The scratched object (for example, a nail) hit only the fine convex part and did not hit the base part. For this reason, the scratches are fine and discontinuous, and are difficult to become large continuous scratches. Then, the present inventors have found that when a decorative metal plate having a fine convex portion on the surface is scratched, the upper surface of the convex portion is crushed and deformed flatly, and the upper surface of the convex portion is previously flattened. I took measures to do. If the upper surface of the convex portion is flat in advance, the change in appearance is reduced even when the convex portion is crushed, and scratches are not noticeable.
Incidentally, the decorative metal plate of the present invention exhibits scratch resistance when scratched with a nail, but when rubbed with a cleaning sponge or scrubbing, or from the manufacture of a decorative metal plate Scratch resistance is exhibited even when the decorative metal plates rub against each other before construction.

また化粧シートにおける凸部の面積割合を小さくし、ベース部の面積割合を大きくすることも提案する。具体的には化粧シートに占める凸部の面積割合が10%以上50%未満であることを提案する。これによって化粧金属板が引っ掻かれた時にスクラッチ傷が入る面積を減らし、傷つかない部分を増やすのである。   It is also proposed to reduce the area ratio of the convex portion in the decorative sheet and increase the area ratio of the base portion. Specifically, it is proposed that the area ratio of the convex portion in the decorative sheet is 10% or more and less than 50%. As a result, when the decorative metal plate is scratched, the area where the scratches are made is reduced, and the parts that are not damaged are increased.

更に本発明では凸部の形状として離散型と連続型の二つを提案する。離散型は図1に示す凸部201に代表されるもので、独立した凸部201がシート上に離散して存在する。連続型は図2に示す凸部202に代表されるもので、線状の凸部202が平行に配置される。なお連続型の凸部は、図2の凸部202のように一方向のみに平行に配置されていてもよいが、図3の凸部203のように二方向に平行に配置されていてもよい。更に図示してはいないが、三方向、四方向に平行に配置されていても。なお凸部を離散型にするか、連続型にするかは、化粧シートに用いる樹脂のエンボス適性、化粧シートに求められる強度などによって決定するとよい。   Furthermore, the present invention proposes two types of convex portions, a discrete type and a continuous type. The discrete type is represented by the convex portion 201 shown in FIG. 1, and the independent convex portions 201 are discretely present on the sheet. A continuous type is represented by the convex part 202 shown in FIG. 2, and the linear convex part 202 is arrange | positioned in parallel. The continuous convex portions may be arranged in parallel in only one direction like the convex portion 202 in FIG. 2, but may be arranged in parallel in two directions like the convex portion 203 in FIG. Good. Furthermore, although not shown in figure, even if arrange | positioned in parallel in three directions and four directions. Whether the convex portions are discrete or continuous may be determined according to the embossability of the resin used for the decorative sheet, the strength required for the decorative sheet, and the like.

更にまた、化粧金属板のスクラッチ傷は、化粧シートが濃暗色に着色されている場合非常に目立っていたが、本願発明の化粧金属板はスクラッチ傷が極僅かの面積にしか入らず、入っても目立たないので、例え化粧シートが濃暗色に着色されていても耐スクラッチ性に優れる。
更にまた、着色や印刷が施された別のシートの表面に、透明もしくは半透明の本発明による化粧シートを貼り合わせ、これを金属板に貼り合せると、別のシートに施された着色や印刷を活かしながら、化粧金属板の耐スクラッチ性を向上させることができる。
また本発明にて提供される化粧金属板の製造方法を用いると、特殊なインキを使用する必要なく、極めて単純な方法で化粧金属板の表面に凸部を設けることができる。
Furthermore, the scratches on the decorative metal plate were very conspicuous when the decorative sheet was colored dark, but the decorative metal plate of the present invention contained only a very small area. Is not conspicuous, and even if the decorative sheet is colored dark and dark, it has excellent scratch resistance.
Furthermore, when a transparent or translucent decorative sheet according to the present invention is bonded to the surface of another sheet that has been colored or printed, and this is bonded to a metal plate, the coloring or printing applied to the other sheet. The scratch resistance of the decorative metal plate can be improved while utilizing the above.
Moreover, if the manufacturing method of the decorative metal plate provided by this invention is used, a convex part can be provided in the surface of a decorative metal plate by a very simple method, without using special ink.

図1(a)は本発明の化粧金属板の一実施例の部分拡大斜視図、図1(b)は図1(a)のA−A断面矢視図である。図1(a)(b)に示す化粧金属板11には離散型の凸部201が設けられている。以下、本発明を図1(a)(b)に基づいて説明するが、これに限定されるものではない。   FIG. 1A is a partially enlarged perspective view of an embodiment of a decorative metal plate of the present invention, and FIG. 1B is a cross-sectional view taken along the line AA in FIG. The decorative metal plate 11 shown in FIGS. 1A and 1B is provided with discrete convex portions 201. Hereinafter, although this invention is demonstrated based on Fig.1 (a) (b), it is not limited to this.

本発明の化粧金属板11は、金属板30に化粧シート21が貼り合わされてなる。そして該化粧シート21は表面に微細な凸部201を有する。具体的には、凸部201が図1に示されるような離散型である場合、凸部201の底面の直径L1を10μm〜1mm程度とする。直径L1が10μmよりも小さいと凸部201を成形することが困難となり、1mmを超えると凸部201にスクラッチ傷が入ったときに、傷が大きすぎて目立つ恐れが生じる。尚、凸部の底面が円形でなく多角形の場合は、底面における最大幅を10μm〜1mm程度とする。
また、隣接する凸部201までの間隔M1も10μm〜1mm程度とする。幅M1が10μmよりも小さいと凸部201を独立して成形することが困難となる。また、幅M1が1mmを超えると化粧金属板11が引っ掻かれた時に、引っ掻いたもの(例えば爪等)を凸部201のみで受け止めることが困難となり、ベース部211にも傷が入る恐れが生じる。尚、幅L1及び幅M1はいずれも100〜600μmが特に適する。
The decorative metal plate 11 of the present invention is formed by bonding a decorative sheet 21 to a metal plate 30. And this decorative sheet 21 has the fine convex part 201 on the surface. Specifically, when the convex portion 201 is a discrete type as shown in FIG. 1, the diameter L1 of the bottom surface of the convex portion 201 is set to about 10 μm to 1 mm. If the diameter L1 is smaller than 10 μm, it is difficult to form the convex portion 201. If the diameter L1 exceeds 1 mm, when the scratch is formed in the convex portion 201, the scratch is too large and may be noticeable. In addition, when the bottom face of a convex part is not circular but a polygon, the maximum width in a bottom face shall be about 10 micrometers-1 mm.
Further, the interval M1 to the adjacent convex portion 201 is also set to about 10 μm to 1 mm. If the width M1 is smaller than 10 μm, it is difficult to form the convex portion 201 independently. Further, when the width M1 exceeds 1 mm, when the decorative metal plate 11 is scratched, it becomes difficult to receive the scratched material (for example, a nail) with only the convex portion 201, and the base portion 211 may be damaged. Arise. The width L1 and the width M1 are particularly preferably 100 to 600 μm.

また凸部201は上面201aが平らであればその形状は特に限定されず、例えば略円柱状、略四角柱状、略三角柱状等であるとよい。尚、凸部201は上面201aからベース部211に向かって、若干傾斜し、広がっていることが好ましい。ベース部211に向かって若干傾斜して広がるテーパー状であると、凸部201を型押しして成形する際に、型を化粧シート21から外し易く、凸部201が型崩れしにくい。   The shape of the convex portion 201 is not particularly limited as long as the upper surface 201a is flat. For example, the convex portion 201 may have a substantially cylindrical shape, a substantially quadrangular prism shape, a substantially triangular prism shape, or the like. In addition, it is preferable that the convex part 201 is slightly inclined and widened from the upper surface 201a toward the base part 211. When the convex portion 201 is formed to be slightly inclined toward the base portion 211, the mold is easily removed from the decorative sheet 21 when the convex portion 201 is pressed and molded, and the convex portion 201 is not easily deformed.

また本願発明の化粧金属板11は、凸部201のみにスクラッチ傷が入り、ベース部211にはスクラッチ傷が入らない。よってスクラッチ傷を目立たせなくするために凸部201の面積割合は小さく、ベース部211の面積割合が大きいことが好ましい。具体的には、化粧シート21表面における凸部201の面積割合が50%未満で、ベース部211の面積割合が過半を占めることが望ましい。但し、凸部201の面積割合が10%未満であると、化粧金属板11が引っ掻かれたときに、引っ掻いたものが凸部201に当らずにベース部211を傷つける恐れが生じる。よって凸部201の面積割合は10%以上50%未満が好適で、特に15%以上40%未満が好適である。なお本明細書において、凸部201の底面積を凸部201の面積とし、化粧シート21の面積から凸部201の底面積を引いたものをベース部211の面積とする。更に、凸部201の面積をα、ベース部211の面積をβとしたとき、凸部201の面積割合はα/(α+β)、ベース部211の面積割合はβ/(α+β)とする。また凸部201の面積やベース部211の面積は、化粧シートの表面形状を直接測定し算出しても良いが、凸部を型押しするための型の表面形状から算出しても良い。両者の値は若干の違いはあっても、ほぼ一致する。   In the decorative metal plate 11 of the present invention, only the convex portion 201 is scratched and the base portion 211 is not scratched. Therefore, it is preferable that the area ratio of the convex portion 201 is small and the area ratio of the base portion 211 is large so that scratches are not noticeable. Specifically, it is desirable that the area ratio of the convex portion 201 on the surface of the decorative sheet 21 is less than 50%, and the area ratio of the base portion 211 occupies the majority. However, if the area ratio of the convex portion 201 is less than 10%, when the decorative metal plate 11 is scratched, the scratched portion may not hit the convex portion 201 and may damage the base portion 211. Therefore, the area ratio of the convex portion 201 is preferably 10% or more and less than 50%, particularly preferably 15% or more and less than 40%. In the present specification, the area of the convex portion 201 is defined as the area of the convex portion 201, and the area of the decorative sheet 21 minus the bottom area of the convex portion 201 is defined as the area of the base portion 211. Furthermore, when the area of the convex portion 201 is α and the area of the base portion 211 is β, the area ratio of the convex portion 201 is α / (α + β), and the area ratio of the base portion 211 is β / (α + β). The area of the convex part 201 and the area of the base part 211 may be calculated by directly measuring the surface shape of the decorative sheet, or may be calculated from the surface shape of a mold for embossing the convex part. The two values are almost the same even though there are some differences.

なお凸201部の上面201aの面積は特に限定されないが、上面201aの面積が小さいほど、個々のスクラッチ傷が小さくなり、傷が目立ち難くなる。しかしながら、小さすぎると引っ掻かれたときに、凸部201がつぶれてしまいベース部211を傷つける恐れがある。これらを考慮すると凸部201の上面201aは、その面積が0.0001mm〜1mmであることが望ましく、0.0025mm〜0.05mmであることが特に好ましい。 The area of the upper surface 201a of the protrusion 201 is not particularly limited, but as the area of the upper surface 201a is smaller, individual scratches are smaller and the scratches are less noticeable. However, if it is too small, when it is scratched, the convex part 201 may be crushed and the base part 211 may be damaged. Upper surface 201a of the consideration and the convex portion 201 is desirably the area is 0.0001 mm 2 ~ 1 mm 2, particularly preferably 0.0025mm 2 ~0.05mm 2.

更に凸部201の高さも特に限定しないが、2〜50μmが好適である。該範囲よりも小さいと凸部201がベース部211からほとんど突出しないので、引っ掻かれた時に凸部201によってベース部211が傷つくことを防止できなくなる。また凸部201の高さが該範囲よりも大きいと、型押しして凸部を成形する際に、化粧シートを成す樹脂が型内に十分に充填されず、型通りの凸部201を成形できなくなる恐れが生じる。凸部201の高さは、特に10〜30μmが好適である。なお本発明の化粧シートは製造過程において、意図しない部分に若干の凹凸ができてしまうことがあるが、これは本発明の凸部に該当しない。   Furthermore, although the height of the convex part 201 is not specifically limited, 2-50 micrometers is suitable. If it is smaller than this range, the convex portion 201 hardly protrudes from the base portion 211, so that it is impossible to prevent the base portion 211 from being damaged by the convex portion 201 when scratched. Further, if the height of the convex portion 201 is larger than the above range, when forming the convex portion by embossing, the resin forming the decorative sheet is not sufficiently filled in the mold, and the convex portion 201 as molded is molded. There is a risk that it will not be possible. As for the height of the convex part 201, 10-30 micrometers is especially suitable. The decorative sheet of the present invention may have some unevenness in an unintended portion during the manufacturing process, but this does not correspond to the convex portion of the present invention.

図2(a)は本発明の化粧金属板の他の実施例の表面状態を示す部分拡大説明図、図2(b)は図2(a)のB−Bにおける断面矢視図である。図2に示す化粧金属板12には連続型の微細凸部202が設けられており、各凸部202は互いに平行な位置に配されている。なお凸部202が連続型である場合、凸部202の底面の幅L2は10μm〜1mmが適し、最も近いところに位置する凸部202までの距離M2も10μm〜1mmが適する。これは図1におけるL1およびM1と同様の理由による。そして凸部の最大幅L2及びベース部の幅M2の特に適した値は100〜600μmである。 更に凸部202の高さは、図1の凸部201と同様、2〜50μm、特に10〜30μmが適し、更にまた化粧シート22における凸部202の面積割合も、図1の凸部201と同様、10%以上50%未満、特に15%40%未満が好適である。
該化粧金属板12はユニットバス壁面等に使用した場合、筋状の陰影ができ意匠性に富む。また手触りも一方向に滑り易い独特のものとなる。
FIG. 2 (a) is a partially enlarged explanatory view showing the surface state of another embodiment of the decorative metal plate of the present invention, and FIG. 2 (b) is a sectional view taken along the line BB of FIG. 2 (a). The decorative metal plate 12 shown in FIG. 2 is provided with continuous fine convex portions 202, and the convex portions 202 are arranged in parallel to each other. When the convex portion 202 is a continuous type, the width L2 of the bottom surface of the convex portion 202 is suitably 10 μm to 1 mm, and the distance M2 to the convex portion 202 located at the nearest location is also suitably 10 μm to 1 mm. This is due to the same reason as L1 and M1 in FIG. A particularly suitable value for the maximum width L2 of the convex portion and the width M2 of the base portion is 100 to 600 μm. Furthermore, the height of the convex part 202 is suitably 2 to 50 μm, particularly 10 to 30 μm, like the convex part 201 of FIG. 1, and the area ratio of the convex part 202 in the decorative sheet 22 is also the same as that of the convex part 201 of FIG. 1. Similarly, 10% or more and less than 50%, particularly 15% or less than 40% is preferable.
When the decorative metal plate 12 is used on a wall surface of a unit bath or the like, a streak-like shadow can be formed and the design is rich. Also, the touch is unique and easy to slide in one direction.

図3(a)は本発明の化粧金属板の他の実施例の表面状態を示す部分拡大説明図、図3(b)は図3(a)のC−C断面矢視図である。図3に示す化粧シート13にも連続型の微細凸部203が設けられており、各凸部203は二方向に平行に、いわゆる格子状に配置されている。なお該化粧シート13においても、凸部203底面の幅L3は10μm〜1mmが適し、最も近いところに位置する平行な凸部203までの間隔M3も10μm〜1mmが適する。そして凸部の最大幅L3及びベース部の幅M3の特に適した値は100〜600μmである。更に凸部203の高さは、凸部201、202と同様、2〜50μm、特に10〜30μmが適し、更にまた化粧シート23における凸部203の面積割合も、凸部201、202と同様、10%以上50%未満、特に15%40%未満が好適である。
該化粧金属板13は凸部203が格子状に配されているため高強度で、例えばユニットバス壁面等に使用し、化粧金属板の表面が手や背中等で強く押さえ付けられたとしてもほとんど変形しない。
FIG. 3A is a partially enlarged explanatory view showing the surface state of another embodiment of the decorative metal plate of the present invention, and FIG. 3B is a cross-sectional view taken along the line CC in FIG. The decorative sheet 13 shown in FIG. 3 is also provided with continuous fine convex portions 203, and each convex portion 203 is arranged in a so-called lattice shape in parallel with two directions. Also in the decorative sheet 13, the width L3 of the bottom surface of the convex portion 203 is suitably 10 μm to 1 mm, and the interval M3 to the parallel convex portion 203 located at the nearest location is also suitably 10 μm to 1 mm. A particularly suitable value for the maximum width L3 of the convex portion and the width M3 of the base portion is 100 to 600 μm. Furthermore, the height of the convex portion 203 is 2 to 50 μm, particularly 10 to 30 μm, as in the convex portions 201 and 202, and the area ratio of the convex portion 203 in the decorative sheet 23 is also similar to the convex portions 201 and 202. 10% or more and less than 50%, particularly 15% or less than 40% is preferable.
The decorative metal plate 13 has a high strength because the convex portions 203 are arranged in a lattice shape, and is used even for example on the wall surface of a unit bath, and even if the surface of the decorative metal plate is strongly pressed by a hand or a back. Does not deform.

尚、凸部が離散型であると、連続型である場合よりも凸部を型押し易いというメリットがある。また離散型の凸部を有する化粧金属板は、その表面が部分的に鏡面で局部的に梨地の独特の外観をし、意匠性に優れる。   In addition, when the convex part is a discrete type, there is a merit that the convex part is easier to press than a continuous type. Further, the decorative metal plate having discrete convex portions has a specular appearance with a partially mirror-finished surface and is excellent in design.

図4(a)は本発明の化粧金属板の他の実施例の表面状態を示す部分拡大説明図、図4(b)は図4(a)のD−D断面矢視図である。本発明の化粧金属板は、図4に示すように、凸部204やベース部214に混ざって、大型凸部224が成形されていてもよい。大型凸部224は凸部204と比較すると若干スクラッチ傷が入りやすいが、大型凸部224を用いることによって化粧シート14の外観に変化がもたらされ、意匠性が向上する。   FIG. 4 (a) is a partially enlarged explanatory view showing the surface state of another embodiment of the decorative metal plate of the present invention, and FIG. 4 (b) is a sectional view taken along the line DD in FIG. 4 (a). As shown in FIG. 4, the decorative metal plate of the present invention may be mixed with the convex portion 204 and the base portion 214 to form a large convex portion 224. Although the large convex portion 224 is slightly more scratched than the convex portion 204, the use of the large convex portion 224 changes the appearance of the decorative sheet 14 and improves the design.

図5は本発明の化粧金属板の他の実施例を表す部分拡大断面図である。本発明の化粧金属板は、金属板に化粧シートが直に貼り合わされていてもよいが、図5に示すように、化粧シート25が、着色や印刷が施された別のシート40に貼り合わされ、更に金属板30に貼り合わされてもよい。化粧シート25、別のシート40、金属板30を貼り合わせる順番は、特に規定されず、金属板30に別のシート40を貼り合わせた後に化粧シート25を貼り合わせてもよく、化粧シート25と別のシート40を貼り合わせた後にこれを金属板30に貼り合わせてもよい。尚、着色や印刷が施された別のシート40を設ける場合、化粧シート25は透明、もしくは半透明であることが好ましい。   FIG. 5 is a partially enlarged sectional view showing another embodiment of the decorative metal plate of the present invention. In the decorative metal plate of the present invention, the decorative sheet may be directly bonded to the metal plate, but as shown in FIG. 5, the decorative sheet 25 is bonded to another sheet 40 that is colored or printed. Further, it may be bonded to the metal plate 30. The order in which the decorative sheet 25, another sheet 40, and the metal plate 30 are bonded together is not particularly defined, and the decorative sheet 25 may be bonded after the other sheet 40 is bonded to the metal plate 30. After bonding another sheet 40, it may be bonded to the metal plate 30. In addition, when providing the other sheet | seat 40 colored or printed, it is preferable that the decorative sheet 25 is transparent or translucent.

次に、本発明の化粧金属板を製造する方法について説明する。まず化粧シートを製造する。化粧シートは、従来から用いられていた樹脂、例えばポリエチレン、ポリプロピレン、ポリブテン、ポリメチルペンテン等のポリオレフィン系樹脂、エチレン−酢酸ビニル共重合体又はそのケン化物、エチレン−(メタ)アクリル酸(エステル)共重合体等のポリオレフィン系共重合体、ポリエチレンテレフタレート、ポリブチレンテレフタレート等のポリエステル系樹脂、ポリメタクリル酸メチル等のアクリル系樹脂、6−ナイロン、6,6−ナイロン等のポリアミド系樹脂、ポリスチレン樹脂、ポリ塩化ビニル等の塩素系樹脂等の一種、或いは複数種をブレンドしたものを原料とし、これをインフレーション押出成形法やTダイ押出成形法等の公知の製膜法によってシート化するとよい。   Next, a method for producing the decorative metal plate of the present invention will be described. First, a decorative sheet is manufactured. The decorative sheet is a resin conventionally used, for example, a polyolefin resin such as polyethylene, polypropylene, polybutene, polymethylpentene, an ethylene-vinyl acetate copolymer or a saponified product thereof, and ethylene- (meth) acrylic acid (ester). Polyolefin copolymers such as copolymers, polyester resins such as polyethylene terephthalate and polybutylene terephthalate, acrylic resins such as polymethyl methacrylate, polyamide resins such as 6-nylon and 6,6-nylon, polystyrene resins It is preferable to use a material obtained by blending one kind or a plurality of kinds of chlorine-based resins such as polyvinyl chloride as a raw material, and forming it into a sheet by a known film forming method such as an inflation extrusion method or a T-die extrusion method.

但し、近年社会問題化しつつある環境への負荷を考慮すると、上記した塩素系樹脂の使用は好ましいものとはいえず、非ハロゲン系樹脂を使用することが好ましい。中でも、市場での価格や流通量・調達の容易性をはじめ、化粧シートとしての適度の柔軟性と強度のバランスや、折り曲げや切断・切削等の加工適正、耐摩耗性や耐溶剤性等の表面物性、耐候性等の各種の側面から見て、ポリオレフィン系樹脂及びポリエステル系樹脂から選ばれる熱可塑性樹脂を使用することが好ましい。更に本発明の化粧金属板をユニットバスの内装材に使用する場合は、高温、多湿の条件化にさらされることになるので、ガラス転移温度の高いポリエステル樹脂を用いることが好ましい。   However, in view of the environmental load that has become a social problem in recent years, the use of the above-mentioned chlorinated resin is not preferable, and it is preferable to use a non-halogen resin. Above all, such as the market price, distribution volume, ease of procurement, moderate balance of flexibility and strength as a decorative sheet, proper processing such as bending, cutting and cutting, wear resistance and solvent resistance, etc. It is preferable to use a thermoplastic resin selected from polyolefin-based resins and polyester-based resins in view of various aspects such as surface physical properties and weather resistance. Further, when the decorative metal plate of the present invention is used as an interior material for a unit bath, it is exposed to high temperature and high humidity conditions, and therefore it is preferable to use a polyester resin having a high glass transition temperature.

また化粧シートの厚みは特に限定されないが、薄くなりすぎるとエンボス加工が困難となり、金属板等に貼り合わすことも難しくなる。しかしながら厚くなりすぎると原価が高くなり、更にハンドリング性も悪化する。これらのことを考慮し、化粧シートの厚みは20〜400μm程度とする。また化粧シートは、単層のシートであってもよいが、多層のシートであってもよい。更に紫外線吸収剤、光安定化剤、酸化防止剤、滑剤、AB剤等の各種添加剤を配合してもよく、着色や印刷等が施されていてもよい。シートに求められる機能に応じて、使用する樹脂の種類や層構成、添加剤、着色や印刷の有無等を適宜決定すればよい。   The thickness of the decorative sheet is not particularly limited, but if it is too thin, embossing becomes difficult, and it becomes difficult to bond it to a metal plate or the like. However, if it becomes too thick, the cost becomes high, and the handleability also deteriorates. Considering these, the thickness of the decorative sheet is about 20 to 400 μm. The decorative sheet may be a single-layer sheet or a multilayer sheet. Furthermore, various additives such as an ultraviolet absorber, a light stabilizer, an antioxidant, a lubricant, and an AB agent may be blended, and coloring or printing may be performed. What is necessary is just to determine suitably the kind of resin to be used, a layer structure, an additive, the presence or absence of coloring, printing, etc. according to the function calculated | required by the sheet | seat.

次に化粧シートに凸部を型押しする。型押しする方法は特に限定されないが、例えばエンボスロールを用いるとよい。ロール状の鉄芯に銅メッキを行ったエンボスロールに、彫刻法、ヘリオ法等の機械彫りや、エッチング法等によって微細な凹部を設け、ハードクロムメッキを施した後、これを化粧シートに押し付けて、シートに微細な凸部を型押しするのである。なおエンボスロールに凹部を設ける方法としてエッチング法を採用し、エンボスロールの表面に感光剤を塗布し、凹部を設けるところ以外を露光して硬化させ、その後未硬化の感光剤を除去、更に感光剤で覆われていない部分を腐食液によって腐食し、凹部を成形すると、非常に簡単に底部が平らな微細凹部を成形することができる。なお凸部を型押しするタイミングは、化粧シートを製膜して一度巻き取った後に再度加熱して行ってもよいが、化粧シートを製膜した直後に行った方が、再加熱する必要がなく、エネルギーコストが下がるため好適である。   Next, the convex part is embossed on the decorative sheet. Although the method of embossing is not specifically limited, For example, an embossing roll may be used. Embossed rolls with copper plating on a roll-shaped iron core are provided with fine recesses by mechanical engraving such as engraving method and helio method, etching method, etc. After hard chrome plating, this is pressed against the decorative sheet Then, a fine convex part is embossed on the sheet. In addition, the etching method is adopted as a method of providing the recesses on the embossing roll, a photosensitive agent is applied to the surface of the embossing roll, the portions other than the portions where the recesses are provided are exposed and cured, and then the uncured photosensitive agent is removed, and the photosensitive agent When the portion not covered with the substrate is corroded with a corrosive liquid and the concave portion is formed, a fine concave portion having a flat bottom can be formed very easily. In addition, the timing of embossing the convex part may be performed by heating again after forming the decorative sheet and winding it once, but it is necessary to reheat it immediately after forming the decorative sheet. This is preferable because the energy cost is reduced.

最後に金属板に化粧シートを貼り合わせる。貼り合わせ方法は特に限定されず、公知の手段を用いるとよく、例えば、金属板を加熱し接着剤を塗布した後に、化粧シートを積層し、加圧して貼り合せるとよい。このとき、化粧シートが高温になりすぎると凸部の形が崩れる恐れがあるので留意する。そして、化粧シートが貼り合わされた金属板を水等で冷却し、乾燥し、更に所望の大きさにカットすると、本発明の化粧金属板を得ることが出来る。   Finally, a decorative sheet is attached to the metal plate. The bonding method is not particularly limited, and a publicly known means may be used. For example, after a metal plate is heated and an adhesive is applied, a decorative sheet is laminated and pressed and bonded. At this time, if the decorative sheet is too hot, the shape of the projections may be lost. And if the metal plate on which the decorative sheet is bonded is cooled with water or the like, dried, and further cut into a desired size, the decorative metal plate of the present invention can be obtained.

本願発明の化粧金属板は耐スクラッチ性に優れ、例え化粧シートが濃暗色に着色されていてもスクラッチ傷が目立ち難く、更には防水性にも優れるので、近年濃暗色の需要が高まっているユニットバスの壁面材として好適に用いることができる。しかしながらこれに限定されないのはもちろんである。   The decorative metal plate of the present invention is excellent in scratch resistance, and even if the decorative sheet is colored in dark and dark, scratches are not noticeable, and it is also excellent in waterproofness. It can be suitably used as a wall material for a bus. However, the present invention is not limited to this.

[実施例1]
銅メッキを行ったロール状の鉄芯に、エッチング法等によって、離散型の凹部を設け、さらにハードクロムメッキを施してエンボスロールを得る。凹部の形は四角柱状とし、凹部底面は一辺の長さが100μmの正方形、凹部の深さは20μmとした。次いで、該エンボスロールを用いてポリブチレンテレフタレートからなる厚さ200μmのシートに微細な凸部を型押しする。得られる化粧シートの凸部は四角柱状で、凸部上面は平らで、一辺の長さが100μの正方形であった。さらに、凸部の高さが20μmであった。また、エンボスロールにおける凹部の面積割合は16%であり、これから化粧シートの凸部の面積割合がほぼ16%であることが分かる。次いで金属板の表面に接着剤を塗布し、前記化粧シートを貼り付け、本発明の化粧金属板を得る。
[Example 1]
A roll-shaped iron core subjected to copper plating is provided with discrete concave portions by an etching method or the like, and further subjected to hard chrome plating to obtain an emboss roll. The shape of the recess was a quadrangular prism, the bottom surface of the recess was a square with a side length of 100 μm, and the depth of the recess was 20 μm. Subsequently, a fine convex part is embossed on a 200 μm-thick sheet made of polybutylene terephthalate using the embossing roll. The convex part of the decorative sheet obtained was a quadrangular prism, the upper surface of the convex part was flat, and a square with a side length of 100 μm. Furthermore, the height of the convex portion was 20 μm. Moreover, the area ratio of the recessed part in an embossing roll is 16%, and it turns out that the area ratio of the convex part of a decorative sheet is about 16% from this. Next, an adhesive is applied to the surface of the metal plate, and the decorative sheet is attached to obtain the decorative metal plate of the present invention.

[比較例1]
銅メッキを行ったロール状の鉄心に、サンドブラスト法にて微細なドーム型の凹部を設け、更にハードクロムメッキを施してエンボスロールを得る。次いで、該エンボスロールを用いてポリブチレンテレフタレートからなる厚さ200μmのシートに微細な凸部を型押しする。該凸部は略ドーム状をしていた。また該凸部はシート全面に渡って設けられていた。次いで金属板の表面に接着剤を塗布し、前記化粧シートを貼り付け、比較例1の化粧金属板を得る。
[Comparative Example 1]
A roll-shaped iron core subjected to copper plating is provided with a fine dome-shaped recess by sandblasting, and further subjected to hard chrome plating to obtain an embossing roll. Subsequently, a fine convex part is embossed on a 200 μm-thick sheet made of polybutylene terephthalate using the embossing roll. The convex portion was substantially dome-shaped. The convex portion was provided over the entire surface of the sheet. Next, an adhesive is applied to the surface of the metal plate, and the decorative sheet is attached to obtain the decorative metal plate of Comparative Example 1.

次に、実施例1および比較例1の化粧金属板の耐スクラッチ性を試験する。試験方法はJIS K 5400(1990)の手かき法に準拠し、化粧金属板の表面を6B〜Fの鉛筆で各5回引っ掻いて試験する。結果を表1に示す。尚、化粧金属板にすり傷が入った場合は×、すり傷が入らなかった場合は○を記す。   Next, the scratch resistance of the decorative metal plate of Example 1 and Comparative Example 1 is tested. The test method is based on the hand-drawing method of JIS K 5400 (1990), and the surface of the decorative metal plate is scratched with a 6B to F pencil five times for testing. The results are shown in Table 1. In addition, when there is a scratch on the decorative metal plate, x is marked, and when there is no scratch, a circle is marked.

Figure 2010042575
Figure 2010042575

よって実施例1の鉛筆硬度はHB、比較例1の鉛筆硬度はBであり、実施例1の化粧金属板は耐スクラッチ性に優れることが分かる。   Therefore, the pencil hardness of Example 1 is HB, the pencil hardness of Comparative Example 1 is B, and it can be seen that the decorative metal plate of Example 1 is excellent in scratch resistance.

[実施例2〜8]
実施例1と同様にして化粧金属板を得る。但し、エンボスロールにおける凹部の密度を変化させ、化粧金属板における凸部の面積割合を表2のように変化させた。
[Examples 2 to 8]
A decorative metal plate is obtained in the same manner as in Example 1. However, the density of the concave portions in the embossing roll was changed, and the area ratio of the convex portions in the decorative metal plate was changed as shown in Table 2.

次に実施例1〜8、比較例1の化粧金属板について、傷の目立ち易さを調べる。試験は、JIS K 5400(1990)鉛筆引っ掻き試験の試験機法に準拠して行った。但し、測定芯は鉛筆に代えて幅0.5mmのアルミニウム芯を用い、試験片の移動距離は20mm、移動速度は3000mm/min、おもりは100g、200g、500gの三種類について行った。評価は目視にて行い、傷がはっきりと見える場合は×、傷がかすかに見える場合は△、全く見えない場合は○とする。結果を表2に記す。   Next, the ease of conspicuous scratches is examined for the decorative metal plates of Examples 1 to 8 and Comparative Example 1. The test was performed in accordance with the testing method of the JIS K 5400 (1990) pencil scratch test. However, an aluminum core having a width of 0.5 mm was used instead of the pencil as the measurement core, the test piece was moved at a distance of 20 mm, the movement speed was 3000 mm / min, and the weights were 100 g, 200 g, and 500 g. The evaluation is made by visual inspection. If the scratches are clearly visible, the mark is x. If the scratches are faint, the mark is Δ. The results are shown in Table 2.

Figure 2010042575
Figure 2010042575

おもりが100gのとき、比較例1の化粧金属板は傷がかすかに確認できたが、実施例1乃至8の化粧金属板は傷が全く見えなかった。また、おもりが200gのとき、比較例1の化粧金属板は傷がはっきりと確認できたが、実施例2、3、5、6、7、8の化粧金属板は傷がかすかに見え、実施例1、4の化粧金属板は傷が全く見えなかった。よって、本願発明の化粧金属板はスクラッチ性に優れ、特に凸部の面積割合が10%以上50%未満であるときその効果が顕著であることが分かる。   When the weight was 100 g, it was confirmed that the decorative metal plate of Comparative Example 1 was slightly scratched, but the decorative metal plates of Examples 1 to 8 were completely invisible. Moreover, when the weight was 200 g, the decorative metal plate of Comparative Example 1 was clearly confirmed to be scratched, but the decorative metal plates of Examples 2, 3, 5, 6, 7, and 8 seemed to be slightly scratched. No scratches were visible on the decorative metal plates of Examples 1 and 4. Therefore, it can be seen that the decorative metal plate of the present invention is excellent in scratch properties, and the effect is particularly remarkable when the area ratio of the convex portions is 10% or more and less than 50%.

更に、実施例1の化粧金属板と比較例1の化粧金属板について、化粧金属板を引っ掻く前後で表面形状がどのように変化しているのか、共焦点顕微鏡(レーザーテック社製)にて確認した。実施例1の化粧金属板の引っ掻く前の顕微鏡写真を図6(a)、引っ掻いた後の顕微鏡写真を図6(b)、比較例1の化粧金属板の引っ掻く前の顕微興写真を図7(a)、引っ掻いた後の顕微鏡写真を図7(b)とする。図6(a)と(b)を比較すると、実施例1の化粧金属板は引っ掻かれると、凸部が押し潰されて若干大きくはなるが、凸部の形そのものはあまり変化しないことがわかる。一方、図7(a)と(b)を比較すると、比較例1の化粧シートは、引っ掻かれるとドーム状の表面形状が部分的に平らに変形することが分かる。尚、ドーム状をした表面と平らな表面では光の反射の仕方が全く違うので、図7(b)に出現する平らな部分は、非常に目立つ傷となる。   Further, with respect to the decorative metal plate of Example 1 and the decorative metal plate of Comparative Example 1, it was confirmed by a confocal microscope (manufactured by Lasertec Corporation) how the surface shape changed before and after scratching the decorative metal plate. . The micrograph before scratching the decorative metal plate of Example 1 is shown in FIG. 6A, the micrograph after scratching is shown in FIG. 6B, and the microscopic photo before scratching of the decorative metal plate of Comparative Example 1 is shown in FIG. (A) The micrograph after scratching is shown in FIG. Comparing FIGS. 6A and 6B, when the decorative metal plate of Example 1 is scratched, the convex portion is crushed and slightly enlarged, but the shape of the convex portion itself may not change so much. Recognize. On the other hand, when FIGS. 7A and 7B are compared, it can be seen that the decorative sheet of Comparative Example 1 has a dome-like surface shape partially deformed flat when scratched. Incidentally, since the way of light reflection is completely different between the dome-shaped surface and the flat surface, the flat portion appearing in FIG. 7B becomes a very conspicuous scratch.

本発明の化粧金属板の一実施例の部分拡大斜視図(a)、及び(a)のA−A断面矢視図(b)である。It is a partial expansion perspective view (a) of one example of a decorative metal plate of the present invention, and an AA section arrow view (b) of (a). 本発明の化粧金属板の他の実施例の部分拡大平面説明図(a)、及び(a)のB−Bにおける断面矢視図(b)である。It is the elements on larger scale explanatory drawing (a) of the other Example of the decorative metal plate of this invention, and sectional drawing (b) in BB of (a). 本発明の化粧金属板の他の実施例の部分拡大平面説明図(a)、及び(a)のC−Cにおける断面矢視図(b)である。It is the partial expanded plan explanatory drawing (a) of the other Example of the decorative metal plate of this invention, and the cross-sectional arrow view (b) in CC of (a). 本発明の化粧金属板の他の実施例の部分拡大平面説明図(a)、及び(a)のD−Dにおける断面矢視図(b)である。It is the partial expanded plan explanatory view (a) of the other Example of the decorative metal plate of this invention, and the cross-sectional arrow view (b) in DD of (a). 本発明の化粧金属板の他の実施例の部分拡大断面図である。It is a partial expanded sectional view of the other Example of the decorative metal plate of this invention. 実施例1の化粧金属板の引っ掻く前の顕微鏡写真(a)、及び引っ掻いた後の顕微鏡写真(b)である。It is the microscope picture (a) before scratching of the decorative metal plate of Example 1, and the microscope picture (b) after scratching. 比較例1の化粧金属板の引っ掻く前の顕微興写真(a)、及び引っ掻いた後の顕微鏡写真(b)である。It is the microphotograph (a) before scratching of the decorative metal plate of the comparative example 1, and the micrograph (b) after scratching.

符号の説明Explanation of symbols

11、12、13、14、15 化粧金属板
21、22、23、24、25 化粧シート
201、202、203、204 凸部
201a、202a、203a、204a 凸部上面
211、212、213、214 ベース部
224 大型凸部
30 金属板
40 別のシート
11, 12, 13, 14, 15 Decorative metal plates 21, 22, 23, 24, 25 Decorative sheets 201, 202, 203, 204 Convex portions 201a, 202a, 203a, 204a Convex portion upper surfaces 211, 212, 213, 214 Base Part 224 Large convex part 30 Metal plate 40 Another sheet

Claims (7)

型押しによって成形された微細な凸部を有する化粧シートを金属板に貼り合わせてなる化粧金属板であって、前記凸部の上面が平らであることを特徴とする化粧金属板。 A decorative metal plate obtained by bonding a decorative sheet having fine convex portions formed by embossing to a metal plate, wherein the upper surface of the convex portions is flat. 前記化粧シートに占める前記凸部の面積割合が10%以上50%未満であることを特徴とする請求項1記載の化粧金属板。 The decorative metal plate according to claim 1, wherein an area ratio of the convex portion in the decorative sheet is 10% or more and less than 50%. 前記凸部が離散型であることを特徴とする請求項1乃至2のいずれかに記載の化粧金属板。 The decorative metal plate according to claim 1, wherein the convex portion is a discrete type. 前記凸部が連続型であることを特徴とする請求項1乃至2のいずれかに記載の化粧金属板。 The decorative metal plate according to claim 1, wherein the convex portion is a continuous type. 前記化粧シートが着色されていることを特徴とする請求項1乃至4のいずれかに記載の化粧金属板。 The decorative metal plate according to any one of claims 1 to 4, wherein the decorative sheet is colored. 前記化粧シートが透明もしくは半透明であり、着色及び/又は印刷が施された別のシートと貼り合わされ、更に金属板に貼り合わされてなる請求項1乃至4のいずれかに記載の化粧金属板。 The decorative metal plate according to any one of claims 1 to 4, wherein the decorative sheet is transparent or translucent, and is bonded to another sheet colored and / or printed, and further bonded to a metal plate. 熱可塑性樹脂からなるシートの表面に、エンボスロールを用いて凸部を型押しして化粧シートを製造し、次いで該化粧シートと金属板を貼り合わせることを特徴とする請求項1乃至6のいずれかに記載の化粧金属板の製造方法。 7. A decorative sheet is manufactured by embossing embossing rolls on a surface of a sheet made of a thermoplastic resin to produce a decorative sheet, and then the decorative sheet and a metal plate are bonded together. A method for producing a decorative metal sheet according to claim 1.
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