JP2017013256A - Light transmissive decorative laminate sheet and method for producing the same - Google Patents
Light transmissive decorative laminate sheet and method for producing the same Download PDFInfo
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Abstract
【課題】和紙状の外観を呈しており、しかも透光性及び光拡散性ともに優れている透光性化粧ラミネートシート及びその製造方法を提供する。【解決手段】透光性化粧シート２の表裏面に透明樹脂シート３を重ね合せた積層用シート材料１を、一対の型板間に挟んで加熱加圧し積層一体化した透光性化粧ラミネートシートであって、全光線透過率が８０％以上でヘーズ９７．５％以上、又は、全光線透過率が７０％以上でヘーズ９８．５％以上、又は、全光線透過率が６５％以上でヘーズ９９．０％以上を有するものとする。また、上型板４として芯材４ａの少なくとも片面に織物シート４ｂを配置したものを用い、下型板５として芯材５ａの少なくとも片面に離型性を有する離型シート５ｂを配置したものを用いて透光性化粧ラミネートシートを製造する方法。【選択図】図１A translucent decorative laminate sheet having a Japanese paper-like appearance and excellent in translucency and light diffusibility and a method for producing the same are provided. A translucent decorative laminate sheet obtained by laminating and integrating a sheet material for laminating 1 in which a transparent resin sheet 3 is superimposed on the front and back surfaces of a translucent decorative sheet 2 between a pair of templates. The total light transmittance is 80% or more and the haze is 97.5% or more, or the total light transmittance is 70% or more and the haze is 98.5% or more, or the total light transmittance is 65% or more and the haze is It shall have 99.0% or more. Moreover, what used the thing which has arrange | positioned the textile sheet 4b on the at least single side | surface of the core material 4a as the upper mold plate 4, and what has arrange | positioned the mold release sheet 5b which has mold release property in the at least single side | surface of the core material 5a as the lower mold board 5. A method for producing a translucent decorative laminate sheet. [Selection] Figure 1
Description
本発明は、和紙状の外観を呈しており、しかも透光性及び光拡散性ともに優れている透光性化粧ラミネートシート及びその製造方法に関するものである。 The present invention relates to a translucent decorative laminate sheet having a Japanese paper-like appearance and excellent in translucency and light diffusibility, and a method for producing the same.
従来から、透光性化粧ラミネートシートは各種照明器具や障子紙風のインテリア製品等に広く使用されている。本件出願人も、このような透光性化粧ラミネートシートに関して、種々開発し先に特許出願している（特許文献１や特許文献２を参照）。 Conventionally, translucent decorative laminate sheets have been widely used for various lighting fixtures, shoji paper-style interior products, and the like. The applicant of the present application has also developed various patents regarding such translucent decorative laminate sheets (see Patent Document 1 and Patent Document 2).
従来技術によれば、透光性化粧シートの表裏面に透明樹脂シートを重ね合せた積層用シート材料を、上下２枚の型板で挟み加熱加圧して１枚のラミネートシートに積層一体化することにより透光性化粧ラミネートシートを製造している。また、前記型板の表面に予め微細な和紙模様を設けておけば、加熱加圧時にその模様が前記透明樹脂シート上に転写されて、ラミネートシートの表裏面に微細な和紙様凹凸模様が形成され、変化に富んだデザインが得られる点も開示されている。一方、透光性ラミネートシートは、透光性化粧シートの風合いを損ねないことが必要であるためにラミネートシートの表裏面は同一または極めて類似した表面形状を形成して、外観上の違いがわからないような工夫がされていた。
そして、上記のような透光性化粧ラミネートシートを用いた照明器具においては、全体的にボンヤリと柔らかく光って和風の独特な照明雰囲気を演出することができた。
According to the prior art, a laminating sheet material in which a transparent resin sheet is superimposed on the front and back surfaces of a translucent decorative sheet is sandwiched between two upper and lower mold plates and heated and pressed to be laminated and integrated into one laminated sheet. Thus, a translucent decorative laminate sheet is manufactured. In addition, if a fine Japanese paper pattern is provided on the surface of the template in advance, the pattern is transferred onto the transparent resin sheet during heating and pressurization, and a fine Japanese paper-like uneven pattern is formed on the front and back surfaces of the laminate sheet. It is also disclosed that a variety of designs can be obtained. On the other hand, since the translucent laminate sheet is required not to impair the texture of the translucent decorative sheet, the front and back surfaces of the laminate sheet form the same or very similar surface shape, and the difference in appearance is not known. Such a device was devised.
And in the lighting fixture using the above translucent decorative laminate sheets, it was possible to produce a unique Japanese-style lighting atmosphere by shining softly as a whole.
しかしながら、従来においては照明器具の光源は白熱電球や蛍光灯が主流であったが、最近では蛍光灯等に変わりＬＥＤ照明が主流となってきた。このＬＥＤ照明は、蛍光灯等と異なり小さな点状の光源であるため、前記ラミネートシートを通してみた場合、点状に光るため全体的にボンヤリと光らせることは難しかった。そこで、光源を目立たなくさせるために光拡散性を高めることが必要になってきた。また一方では、省エネ効果を得るという観点から透光性を高めることも必要であった。
従って、ＬＥＤ光源に対しては透光性及び光拡散性の２つとも優れていることが要求されているが、透光性を上げると光拡散性が下がり、透光性を下げると光拡散性が上がる傾向があって、両者共にあげることは難しいという問題があった。
However, in the past, incandescent bulbs and fluorescent lamps have been the main light sources for lighting fixtures, but recently, LED lighting has become mainstream instead of fluorescent lamps. Since this LED illumination is a small point light source unlike a fluorescent lamp or the like, when viewed through the laminate sheet, it is difficult to make it shine as a whole because it shines in a point shape. Therefore, it has become necessary to increase the light diffusibility in order to make the light source inconspicuous. On the other hand, it was also necessary to increase translucency from the viewpoint of obtaining an energy saving effect.
Therefore, the LED light source is required to have both excellent translucency and light diffusibility. However, when the translucency is increased, the light diffusibility is decreased, and when the translucency is decreased, the light diffusion is decreased. There was a problem that it was difficult to raise both of them.
本発明は上記のような問題点を解決して、透光性及び光拡散性ともに優れており、特にＬＥＤ光源に対しても和紙特有の全体的にボンヤリと光る暖か味のある照明を実現することができる透光性化粧ラミネートシート及びその製造方法を提供することを目的とするものである。 The present invention solves the above-described problems, and is excellent in both translucency and light diffusibility, and in particular, realizes a warm and lit illumination that is unique to Japanese paper and that is particularly brilliant for LED light sources. An object of the present invention is to provide a translucent decorative laminate sheet and a method for producing the same.
上記課題を解決するためになされた本発明の透光性化粧ラミネートシートは、透光性化粧シートの表裏面に透明樹脂シートを重ね合せた積層用シート材料を、一対の型板間に挟んで加熱加圧し積層一体化した透光性化粧ラミネートシートであって、
全光線透過率が８０％以上でヘーズ９７．５％以上、
又は、全光線透過率が７０％以上でヘーズ９８．５％以上、
又は、全光線透過率が６５％以上でヘーズ９９．０％以上を有することを特徴とするものである。
The translucent decorative laminate sheet of the present invention, which has been made to solve the above-mentioned problems, comprises a laminate sheet material in which a transparent resin sheet is superimposed on the front and back surfaces of a translucent decorative sheet, sandwiched between a pair of templates. A translucent decorative laminate sheet laminated by heating and pressurizing,
Total light transmittance is 80% or more and haze is 97.5% or more,
Or the total light transmittance is 70% or more and haze is 98.5% or more,
Alternatively, the total light transmittance is 65% or more and the haze is 99.0% or more.
また、本発明の透光性化粧ラミネートシートの製造方法は、透光性化粧シートの表裏面に透明樹脂シートを重ね合せた積層用シート材料を、一対の型板間に挟んで加熱加圧し積層一体化する透光性化粧ラミネートシートの製造方法において、
一方の型板として芯材の少なくとも片面に織物シートを配置したものを用い、他方の型板として芯材の少なくとも片面に離型性を有する離型シートを配置したものを用いて、
これら一対の型板を前記織物シート及び離型シートが前記積層用シート材料の側になるように配置し、これらの型板間に前記積層用シート材料を介挿して加熱加圧することを特徴とするものである。
Further, the method for producing a translucent decorative laminate sheet according to the present invention comprises laminating a sheet material for laminating, in which a transparent resin sheet is superimposed on the front and back surfaces of the translucent decorative sheet, by heating and pressing between a pair of templates. In the manufacturing method of the translucent decorative laminate sheet to be integrated,
One using a woven sheet disposed on at least one side of the core as a template, and using one having a release sheet disposed on at least one side of the core as the other template,
The pair of stencils are arranged such that the woven sheet and the release sheet are on the side of the laminating sheet material, and the laminating sheet material is interposed between these stencils and heated and pressed. To do.
好ましい実施形態によれば、前記織物シートは、糸の本数が１００〜２５０本／インチで、糸径／糸間距離が１．５〜２．０の範囲にある平織物シートが好ましい。 According to a preferred embodiment, the fabric sheet is preferably a plain fabric sheet having a yarn count of 100 to 250 yarns / inch and a yarn diameter / interval distance of 1.5 to 2.0.
また、その他の好ましい実施形態によれば、前記透光性化粧シートは、和紙、織布、不織布から選択されるいずれかであり、坪量が５〜２５ｇ／ｍ2の範囲にあるものが好ましい。 According to another preferred embodiment, the translucent decorative sheet is any one selected from Japanese paper, woven fabric, and non-woven fabric, and preferably has a basis weight in the range of 5 to 25 g / m 2. .
本発明の透光性化粧ラミネートシートは、全光線透過率が８０％以上でヘーズ９７．５％以上、又は、全光線透過率が７０％以上でヘーズ９８．５％以上、又は、全光線透過率が６５％以上でヘーズ９９．０％以上を有するものとしたので、透光性及び光拡散性ともに優れており、またＬＥＤ光源であっても点状に光らず全体的にボンヤリと光らせることができる。 The translucent decorative laminate sheet of the present invention has a total light transmittance of 80% or more and a haze of 97.5% or more, or a total light transmittance of 70% or more and a haze of 98.5% or more, or a total light transmission. Since the rate is 65% or more and the haze is 99.0% or more, both the translucency and the light diffusibility are excellent. Can do.
本発明の透光性化粧ラミネートシートの製造方法は、一方の型板として芯材の少なくとも片面に織物シートを配置したものを用い、他方の型板として芯材の少なくとも片面に離型性を有する離型シートを配置したものを用いて、これら一対の型板を前記織物シート及び離型シートが前記積層用シート材料の側になるように配置し、これらの型板間に前記積層用シート材料を介挿して加熱加圧するようにしたので、透光性化粧シートの風合いを損ねる事のない外観で優れた透光性及び光拡散性を有し、かつＬＥＤ光源であっても点状に光らず全体的にボンヤリと光って和風調の趣を呈する透光性化粧ラミネートシートを加熱加圧の一工程によって簡単に製造することができる。 The method for producing a translucent decorative laminate sheet according to the present invention uses one having a woven fabric sheet disposed on at least one side of a core as one template, and has releasability on at least one side of the core as the other template. Using a sheet in which a release sheet is arranged, these pair of mold plates are arranged such that the fabric sheet and the release sheet are on the side of the sheet material for lamination, and the sheet material for lamination is placed between these mold plates. Because it is heated and pressurized, it has excellent translucency and light diffusibility with an appearance that does not impair the texture of the translucent decorative sheet, and even if it is an LED light source, it shines in a dot shape. Therefore, a translucent decorative laminate sheet that shines as a whole and exhibits a Japanese-style taste can be easily manufactured by one step of heating and pressing.
前記織物シートを、糸の本数が１００〜２５０本／インチで、糸径／糸間距離が１．５〜２．０の範囲にある平織物シートものとしたものは、外観上の表裏面の違いを視認するのが難しく、透光性及び光拡散性が所定の範囲内にある透光性化粧ラミネートシートを製造することができる。 The fabric sheet is a plain fabric sheet having a thread count of 100 to 250 / inch and a thread diameter / interval distance of 1.5 to 2.0. It is difficult to visually recognize the difference, and a translucent decorative laminate sheet having translucency and light diffusibility within a predetermined range can be produced.
前記透光性化粧シートは、和紙、織布、不織布から選択されるいずれかであり、坪量が５〜２５ｇ／ｍ2の範囲にあるものとしたものは、透光性化粧ラミネートシートの風合い（透光性化粧ラミネートシートの素材感）を与え、透光性及び光拡散性を補助的に調整して所定の範囲内にある透光性化粧ラミネートシートを製造することができる。 The translucent decorative sheet is any one selected from Japanese paper, woven fabric, and non-woven fabric, and the basis weight is in the range of 5 to 25 g / m 2. It is possible to produce a translucent decorative laminate sheet having a predetermined range by providing (a feeling of material of the translucent decorative laminate sheet) and adjusting the translucency and light diffusivity in an auxiliary manner.
（透光性化粧ラミネートシート）
以下に、図面を参照しつつ本発明の好ましい実施の形態を示す。
図１は、和紙状の風合いを呈する本発明の透光性化粧ラミネートシートの断面を示すものであり、図中１は積層用シート材料である。この積層用シート材料１は、透光性化粧シート２の表裏面に透明樹脂シート３，３を重ね合せたもので、厚さは０．５〜１．０ｍｍである。
(Translucent decorative laminate sheet)
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a cross-section of a translucent decorative laminate sheet of the present invention that exhibits a Japanese paper-like texture, in which 1 is a sheet material for lamination. This laminating sheet material 1 is obtained by superimposing transparent resin sheets 3 and 3 on the front and back surfaces of a translucent decorative sheet 2 and has a thickness of 0.5 to 1.0 mm.
前記透光性化粧シート２としては、厚みが５〜２００μｍのシート状の和紙、織布、不織布から選択されるいずれかを用いることができる。
前記シート状和紙としては、植物から得た繊維、またはアクリル繊維、レーヨン繊維などの合成樹脂からなる繊維、またはガラス繊維などの無機繊維を混抄し、その繊維により多数の凸形状を有する分散繊維模様を付与した和紙が適用できる。また、前記植物としては草木の葉等から選ばれた１種または２種以上の組み合わせが用いられる。更には、シート状の織布、不織布も利用することができる。
As the translucent decorative sheet 2, any one selected from sheet-like Japanese paper, woven fabric, and non-woven fabric having a thickness of 5 to 200 μm can be used.
As the sheet-like Japanese paper, a dispersed fiber pattern in which fibers obtained from plants, fibers made of synthetic resins such as acrylic fibers and rayon fibers, or inorganic fibers such as glass fibers are mixed, and the fibers have a number of convex shapes. Japanese paper to which is attached can be applied. In addition, as the plant, one or a combination of two or more selected from the leaves of plants and the like is used. Furthermore, a sheet-like woven fabric or non-woven fabric can also be used.
前記透光性化粧シート２は、坪量が５〜２５ｇ／ｍ2の範囲、より好ましくは１１〜１８ｇ／ｍ2の範囲にあるものよい。坪量が５／ｍ2未満であると、素材感（透光性化粧ラミネートシートの風合い）がなくなり、一方、坪量が２５／ｍ2より大きいと、透光性が得られなくなるからである。従って、和紙の素材感を発揮し、かつ透光性及び光拡散性を所定の範囲内に収めるためには、坪量を上記の範囲内とする必要がある。
一方、透明樹脂シート３としては、アクリル樹脂、塩化ビニル樹脂、ポリエステル樹脂、ＡＢＳ樹脂、ポリカーボネート樹脂等の透明または半透明の透光性のある厚みが３０〜５００μｍ合成樹脂フィルムが用いられる。
The translucent decorative sheet 2 has a basis weight in the range of 5 to 25 g / m 2 , more preferably in the range of 11 to 18 g / m 2 . This is because if the basis weight is less than 5 / m 2 , the material feeling (texture of the translucent decorative laminate sheet) is lost, and if the basis weight is greater than 25 / m 2 , the translucency cannot be obtained. . Therefore, it is necessary to make the basis weight within the above range in order to exhibit the texture of Japanese paper and keep the translucency and light diffusibility within a predetermined range.
On the other hand, as the transparent resin sheet 3, a synthetic resin film having a transparent or translucent translucent thickness such as an acrylic resin, a vinyl chloride resin, a polyester resin, an ABS resin, or a polycarbonate resin is used.
前記積層用シート材料１を、一対の型板間に挟んで加熱加圧し積層一体化して得られる本発明の透光性化粧ラミネートシートは、全光線透過率が８０％以上でヘーズ９７．５％以上、又は、全光線透過率が７０％以上でヘーズ９８．５％以上、又は、全光線透過率が６５％以上でヘーズ９９．０％以上を有するものである。
本発明者の実験結果によれば、この数値範囲以下のものでは、透光性及び光拡散性ともに満足する透光性化粧ラミネートシートを得ることができなかった。なお、全光線透過率が６５％未満では高透過とは言えないので除外した。
The translucent decorative laminate sheet of the present invention obtained by laminating and integrating the sheet material for laminating 1 between a pair of mold plates by heating and pressing has a total light transmittance of 80% or more and a haze of 97.5%. The total light transmittance is 70% or more and the haze is 98.5% or more, or the total light transmittance is 65% or more and the haze is 99.0% or more.
According to the experiment results of the present inventors, a translucent decorative laminate sheet that satisfies both the translucency and the light diffusibility could not be obtained when the value was within this numerical range. Note that if the total light transmittance was less than 65%, it could not be said that the transmittance was high, so it was excluded.
透光性と光拡散性のバランスは微妙であり、一律に全光線透過率が６５％以上でヘーズ９７．５％以上という条件のみでは二つの特性を得ることはできなかった。一般論としては、透過が上がればヘーズは下がり、透過が下がればヘーズは上がるといった関係があるが、現実にはヘーズを上げることは難しかった。本発明者の実験によれば、ヘーズの０．１ポイントの変動が全光線透過率の１ポイント程度の数値の重みになるとの感触を得た。そして、透光性と光拡散性をともに満足することができる範囲について実験を重ねた結果、下記の範囲であれば満足できることを確認した。
本発明者の実験結果では、全光線透過率が８０％以上の場合はヘーズ９７．５％以上であれば透光性及び光拡散性ともに満足することが確認できた。また、全光線透過率が７０％以上の場合はヘーズ９８．５％以上であれば透光性及び光拡散性ともに満足し、あるいは全光線透過率が６５％以上の場合はヘーズ９９．０％以上であれば透光性及び光拡散性ともに満足することが確認でき、上記３つの条件のいずれかの場合であればよいことを解明した。
The balance between translucency and light diffusivity is delicate, and two characteristics could not be obtained only under the condition that the total light transmittance is 65% or more and haze is 97.5% or more. In general terms, there is a relationship that if the transmission increases, the haze decreases, and if the transmission decreases, the haze increases, but in reality it was difficult to increase the haze. According to the experiment of the present inventor, it was obtained that the fluctuation of 0.1 point of haze becomes a weight of a numerical value of about 1 point of the total light transmittance. And as a result of repeating experiment about the range which can satisfy both translucency and light diffusivity, it was confirmed that it is satisfactory if it is the following range.
As a result of experiments by the present inventor, it has been confirmed that when the total light transmittance is 80% or more, if the haze is 97.5% or more, both the translucency and the light diffusibility are satisfied. Further, when the total light transmittance is 70% or more, both the translucency and the light diffusibility are satisfied when the haze is 98.5% or more, or when the total light transmittance is 65% or more, the haze is 99.0%. If it was above, it could be confirmed that both translucency and light diffusivity were satisfied, and it was clarified that any of the above three conditions is sufficient.
（透光性化粧ラミネートシートの製造方法）
次に、透光性化粧ラミネートシートの製造方法について説明する。
透光性化粧シートの表裏面に透明樹脂シートを重ね合せた積層用シート材料を、一対の型板間に挟んで加熱加圧し積層一体化する点は、従来の製造方法と基本的に同じである。しかしながら、従来方法においては一対の型板は同一のものであった。
これに対して本発明では、図２に示すように、積層用シート材料１を挟む上型板４と下型板５の材質が異なるものを使用することにより、透光性及び光拡散性ともに満足する透光性化粧ラミネートシートを製造できることを見出した。
(Method for producing translucent decorative laminate sheet)
Next, the manufacturing method of a translucent decorative laminate sheet is demonstrated.
It is basically the same as the conventional manufacturing method in that the sheet material for lamination in which the transparent resin sheet is superimposed on the front and back surfaces of the translucent decorative sheet is sandwiched between a pair of mold plates and heated and pressed to integrate them. is there. However, in a conventional method, a pair of template was the same.
On the other hand, in the present invention, as shown in FIG. 2, by using different materials of the upper mold plate 4 and the lower mold plate 5 sandwiching the laminating sheet material 1, both translucency and light diffusibility are provided. It has been found that a satisfactory translucent decorative laminate sheet can be produced.
即ち本発明は、図３に示すように、上型板４として芯材４ａの少なくとも片面に織物シート４ｂを配置したものを用い、一方、図４に示すように、下型板５として芯材５ａの少なくとも片面に離型性を有する離型シート５ｂを配置したものを用いて、これら一対の型板４、５を前記織物シート４ｂ及び離型シート５ｂが前記積層用シート材料１の側になるように配置し、これらの型板４、５間に前記積層用シート材料１を介挿して加熱加圧する点に特徴を有するものである。 That is, in the present invention, as shown in FIG. 3, an upper mold plate 4 is used in which a woven sheet 4b is disposed on at least one side of a core material 4a, while a lower mold plate 5 is used as a core material as shown in FIG. Using a sheet having a release sheet 5b having releasability disposed on at least one side of 5a, the pair of mold plates 4, 5 is placed on the side of the sheet material 1 for lamination, the fabric sheet 4b and the release sheet 5b. It arrange | positions so that it may become, and it has the characteristic in the point which inserts the said sheet material 1 for lamination | stacking between these template 4 and 5, and heat-presses.
図示のものでは、上型板４として芯材４ａの両面に織物シート４ｂ、４ｂを配置したものを示し、また、下型板５として芯材５ａの両面に離型性を有する離型シート５ｂ、５ｂを配置したものを示している。
なお、本発明者の実験結果によれば、上下型板として織物シート４ｂを配置した芯材４ａを上下両面に配置した場合は、光拡散性は得られるが透光性が悪くなることが確認されている。また、離型性を有する離型シート５ｂを配置した芯材５ａを上下両面に配置した場合は、透光性は得られるが光拡散性が悪くなることが確認されている。
In the illustrated example, an upper mold plate 4 is shown in which fabric sheets 4b and 4b are arranged on both sides of a core material 4a, and a lower mold plate 5 is a release sheet 5b having releasability on both sides of the core material 5a. 5b is shown.
In addition, according to the experiment result of the present inventor, when the core material 4a having the fabric sheet 4b disposed as the upper and lower mold plates is disposed on both the upper and lower surfaces, it is confirmed that the light diffusibility is obtained but the translucency is deteriorated. Has been. Moreover, when the core material 5a on which the release sheet 5b having releasability is disposed is disposed on both the upper and lower surfaces, it is confirmed that the light diffusibility is deteriorated although the translucency is obtained.
前記芯材４ａ及び芯材５ａは、型板に対して剛性を付与するものであり、熱硬化性樹脂版、板紙、ガラスクロス、ガラス不織布等から選択することができる。
また前記織物シート４ｂは、糸の本数が１００〜２５０本／インチで、糸径／糸間距離が１．５〜２．０の範囲にある平織物シートであることが好ましい。糸の本数が１００本／インチ未満であると全光線透過率が下がり十分な透光性を得ることができず、一方、２５０本／インチを超えるとヘーズが下がり十分な光拡散性を得ることができない。
更に、糸径／糸間距離が１．５〜２．０の範囲にあることが好ましい。糸径／糸間距離が１．５未満であると、表面の凹凸形状が浅すぎてヘーズが下がり十分な光拡散性を得ることができず、一方、糸径／糸間距離が２．０を超えると透光性あるいは光拡散性のいずれかが低下してしまう。
The core material 4a and the core material 5a impart rigidity to the template, and can be selected from thermosetting resin plates, paperboard, glass cloth, glass nonwoven fabric, and the like.
The fabric sheet 4b is preferably a plain fabric sheet having a yarn count of 100 to 250 yarns / inch and a yarn diameter / interval distance of 1.5 to 2.0. If the number of yarns is less than 100 yarns / inch, the total light transmittance decreases and sufficient light transmission cannot be obtained. On the other hand, if the number of yarns exceeds 250 yarns / inch, haze decreases and sufficient light diffusibility is obtained. I can't.
Further, the yarn diameter / inter-yarn distance is preferably in the range of 1.5 to 2.0. If the yarn diameter / inter-yarn distance is less than 1.5, the surface unevenness is too shallow and haze is lowered and sufficient light diffusibility cannot be obtained, while the yarn diameter / inter-yarn distance is 2.0. Exceeding either of the light-transmitting properties or the light-diffusing properties decreases.
前記離型シート５ｂは、得られる透光性化粧ラミネートシートの風合いを損ねないために、表面光沢をより抑えたものが好ましく、例えば、ポリプロピレンフィルム等の合成樹脂フィルム、アルミ合金箔やシート、紙シート等が挙げられ、これら種々の素材から任意に選択することができる。
また、下型板５は一体化されたものでもよく、金属板や熱硬化性樹脂板なども使用することができる。
The release sheet 5b preferably has a surface gloss that is further suppressed so as not to impair the texture of the translucent decorative laminate sheet to be obtained. For example, a synthetic resin film such as a polypropylene film, an aluminum alloy foil or sheet, paper A sheet | seat etc. are mentioned, It can select arbitrarily from these various raw materials.
Further, the lower mold plate 5 may be integrated, and a metal plate, a thermosetting resin plate, or the like can be used.
表１に示した条件（糸の直径、糸間の距離、糸の本数、糸径と糸間距離の比）のポリエステル製平織物シートを配置したａ〜ｇの上型板を準備した。このうち、ｂ〜ｄは本発明の実施例を示し、ａ、ｅ〜ｇは比較例を示している。また、ｈは片面に離型性を有する離型シートをシート状の型板として作成した下型板である。 Upper mold plates a to g on which polyester plain fabric sheets having the conditions shown in Table 1 (diameter of yarn, distance between yarns, number of yarns, ratio of yarn diameter to distance between yarns) were arranged were prepared. Among these, b-d shows the Example of this invention, a, e-g has shown the comparative example. Further, h is a lower mold plate in which a release sheet having releasability on one side is prepared as a sheet-shaped template.
積層用シート材料として、坪量が１１ｇ／ｍ2の和紙の両面に厚みが１００μｍの硬質塩化ビニル樹脂シートを重ね合せたものを準備した。なお、前記硬質塩化ビニル樹脂シートの片面には接着剤が塗布してあり、この塗布面が和紙面側となるようにセットしてある。
上記の積層用シート材料を、表１に示す上型板と下型板の間に挿入して、ホットプレス機により１１０℃で１０分間プレスして透光性化粧ラミネートシートを作成した。
得られた透光性化粧ラミネートシートの全光線透過率（％）とヘーズ（％）を表２に示す。前記全光線透過率（％）は、JIS K 7361-1により測定し、ヘーズ（％）は、JIS K 7136により測定した。
得られた透光性化粧ラミネートシートの外観評価は、５００ｍｍ離れた位置から確認して、透光性化粧シートの風合いを損ねず、かつ表裏面の違いが視認できないものを「○」とし、そうでないものを「×」とした。
また、透光性化粧ラミネートシートの透過拡散性評価は、ＬＥＤ光源に対して透光性及び光拡散性の２つとも優れていると認識できたものを「○」とし、ある程度効果があると認識したものを「△」とし、従来の物性レベルと認識したものを「×」とした。
As a sheet material for laminating, a paper sheet having a basis weight of 11 g / m 2 and a hard vinyl chloride resin sheet having a thickness of 100 μm superimposed on both sides was prepared. Note that an adhesive is applied to one side of the hard vinyl chloride resin sheet, and the application surface is set to be the Japanese paper surface side.
The above laminating sheet material was inserted between the upper mold plate and the lower mold plate shown in Table 1, and pressed at 110 ° C. for 10 minutes with a hot press machine to prepare a translucent decorative laminate sheet.
Table 2 shows the total light transmittance (%) and haze (%) of the obtained translucent decorative laminate sheet. The total light transmittance (%) was measured according to JIS K 7361-1, and the haze (%) was measured according to JIS K 7136.
Appearance evaluation of the obtained translucent decorative laminate sheet is confirmed from a position 500 mm away, and “○” indicates that the texture of the translucent decorative sheet is not impaired and the difference between the front and back surfaces cannot be visually recognized. What was not was made into "x".
In addition, in the evaluation of the transmissivity of the translucent decorative laminate sheet, “○” indicates that both the translucency and the light diffusibility are excellent with respect to the LED light source. What was recognized was "△", and what was recognized as a conventional physical property level was "x".
また、積層用シート材料として、坪量が１８ｇ／ｍ2の和紙を用い、その他の条件は上記と同様である場合に得られた透光性化粧ラミネートシートの全光線透過率（％）とヘーズ（％）を表３に示す。 Moreover, the total light transmittance (%) and haze of the translucent decorative laminate sheet obtained when a Japanese paper having a basis weight of 18 g / m 2 was used as the laminating sheet material and the other conditions were the same as above. (%) Is shown in Table 3.
以上の実施例からも明らかなように、本発明の透光性化粧ラミネートシートは所定の全光線透過率（％）とヘーズ（％）を有しており、透光性及び光拡散性ともに優れていてＬＥＤ光源であっても点状に光らず全体的にボンヤリと光らせることができることが確認できた。また、本発明の製造方法によれば、透光性及び光拡散性ともに優れた透光性化粧ラミネートシートを簡単かつ安価に生産できることが確認できた。 As is clear from the above examples, the translucent decorative laminate sheet of the present invention has a predetermined total light transmittance (%) and haze (%), and is excellent in both translucency and light diffusibility. Thus, it was confirmed that even if it was an LED light source, it could be shined as a whole without shining in a spot shape. Moreover, according to the manufacturing method of this invention, it has confirmed that the translucent decorative laminate sheet excellent in both translucency and light diffusivity could be produced simply and cheaply.
１ 積層用シート材料
２ 透光性化粧シート
３ 透明樹脂シート
４ 上型板
４ａ 芯材
４ｂ 織物シート
５ 下型板
５ａ 芯材
５ｂ 離型シート
DESCRIPTION OF SYMBOLS 1 Sheet material for lamination 2 Translucent decorative sheet 3 Transparent resin sheet 4 Upper mold plate 4a Core material 4b Textile sheet 5 Lower mold plate 5a Core material 5b Release sheet
Claims (4)
全光線透過率が８０％以上でヘーズ９７．５％以上、
又は、全光線透過率が７０％以上でヘーズ９８．５％以上、
又は、全光線透過率が６５％以上でヘーズ９９．０％以上を有することを特徴とする透光性化粧ラミネートシート。 A translucent decorative laminate sheet in which a transparent resin sheet is laminated on the front and back surfaces of a translucent decorative sheet, and laminated and integrated by heating and pressing between a pair of templates,
Total light transmittance is 80% or more and haze is 97.5% or more,
Or the total light transmittance is 70% or more and haze is 98.5% or more,
Alternatively, a translucent decorative laminate sheet having a total light transmittance of 65% or more and a haze of 99.0% or more.
一方の型板として芯材の少なくとも片面に織物シートを配置したものを用い、他方の型板として芯材の少なくとも片面に離型性を有する離型シートを配置したものを用いて、
これら一対の型板を前記織物シート及び離型シートが前記積層用シート材料の側になるように配置し、これらの型板間に前記積層用シート材料を介挿して加熱加圧することを特徴とする透光性化粧ラミネートシートの製造方法。 In the method for producing a light-transmitting decorative laminate sheet in which a transparent sheet is laminated on the front and back surfaces of a light-transmitting decorative sheet, and the laminate material is laminated by heating and pressing between a pair of templates,
One using a woven sheet disposed on at least one side of the core as a template, and using one having a release sheet disposed on at least one side of the core as the other template,
The pair of stencils are arranged such that the woven sheet and the release sheet are on the side of the laminating sheet material, and the laminating sheet material is interposed between these stencils and heated and pressed. A method for producing a translucent decorative laminate sheet.
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| JP2012177771A (en) * | 2011-02-25 | 2012-09-13 | Oji Paper Co Ltd | Optical film |
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| JPS54116283U (en) * | 1978-01-31 | 1979-08-15 | ||
| JPH06238858A (en) * | 1993-02-16 | 1994-08-30 | Toray Ind Inc | Decorative sheet, clothing and manufacture of decorative sheet |
| JPH08103990A (en) * | 1994-10-04 | 1996-04-23 | Waaron:Kk | Template used to mold decorative laminated sheet exhibiting japanese paperlike external appearance and manufacture of the same sheet |
| JP2007118356A (en) * | 2005-10-27 | 2007-05-17 | Kurimoto Kasei Kogyo Kk | Method for producing resin plate and resin plate |
| JP2007313677A (en) * | 2006-05-23 | 2007-12-06 | Waaron:Kk | Method for producing laminate sheet with uneven texture and template used therefor |
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| JP2012177771A (en) * | 2011-02-25 | 2012-09-13 | Oji Paper Co Ltd | Optical film |
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