CN115362058A - 多层构造体 - Google Patents

多层构造体 Download PDF

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Publication number
CN115362058A
CN115362058A CN202180024391.9A CN202180024391A CN115362058A CN 115362058 A CN115362058 A CN 115362058A CN 202180024391 A CN202180024391 A CN 202180024391A CN 115362058 A CN115362058 A CN 115362058A
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China
Prior art keywords
layer
laminated
multilayer structure
glass
base material
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村重毅
稻垣淳一
佐藤启介
岸敦史
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Nitto Denko Corp
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Nitto Denko Corp
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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Ceramic Engineering (AREA)
  • Laminated Bodies (AREA)
  • Surface Treatment Of Glass (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

一种多层构造体,其具有在基材之上排列的多个层叠部,该层叠部包括:树脂层;玻璃层,其在该树脂层之上隔着粘接剂层层叠;以及金属层,其形成于该玻璃层的靠该粘接剂层一侧的面,该玻璃层的厚度为10μm以上300μm以下,该树脂层的厚度为10μm以上1000μm以下。

Description

多层构造体
技术领域
本发明涉及多层构造体。
背景技术
已知使两层以上的层层叠的多层构造体。作为一个例子,可以举出在较薄的玻璃层(玻璃薄膜)之上层叠银反射层的多层构造体。这样的多层构造体兼具表面硬度、尺寸稳定性、化学耐性、轻量、可挠性。因此,这样的利用了多层构造体的薄玻璃的反射镜不只轻量且不存在飞散等的问题,而且由于玻璃表面和金属层的距离极近,因此也不存在像被二重映出这样的在以往的板玻璃的反射镜能够见到的课题,从而能够映出清晰的像。
现有技术文献
专利文献:
专利文献1:日本特开2013-231744号公报
发明内容
发明要解决的问题
但是,薄玻璃的反射镜难以操作,在向建造物等施工大面积的反射镜时存在处理的课题。
本发明是鉴于上述点而成的,其目的在于提供能够作为薄玻璃的反射镜使用的大面积的多层构造体。
解决问题的方法
本多层构造体具有在基材之上排列的多个层叠部,上述层叠部包括:树脂层;玻璃层,其在上述树脂层之上隔着粘接剂层层叠;以及金属层,其形成于上述玻璃层的靠上述粘接剂层一侧的面,上述玻璃层的厚度为10μm以上300μm以下,上述树脂层的厚度为10μm以上1000μm以下。
发明的效果
根据公开的技术,能够提供能够作为薄玻璃的反射镜使用的大面积的多层构造体。
附图说明
图1是举例示出第一实施方式的多层构造体的俯视图。
图2是举例示出第一实施方式的多层构造体的部分放大剖视图。
图3是对基材的大小与层叠部的个数与间隙的大小的优选关系进行说明的图。
图4是举例示出第一实施方式的变形例1的多层构造体的剖视图。
图5是举例示出第一实施方式的变形例2的多层构造体的剖视图。
图6是举例示出第一实施方式的变形例3的多层构造体的俯视图。
符号说明
1、1A、1B、1C 多层构造体
10、10A、10B 层叠部
11 树脂层
12、15、16 粘接剂层
13 金属层
14 玻璃层
17 缓冲层
20 基材
20a 上表面
22 着色层
具体实施方式
以下,参照附图对用于实施发明的方式进行说明。在各附图中,对于相同构成部分付与相同附图标记,有时省略重复的说明。
<第一实施方式>
[多层构造体]
图1是举例示出第一实施方式的多层构造体的俯视图。图2是举例示出第一实施方式的多层构造体的部分放大剖视图,其示出了沿图1的A-A线的剖面。
如图1以及图2所示,多层构造体1具有排列于一片基材20之上的多个层叠部10。
在本实施方式中,作为一个例子,将多层构造体1的俯视形状(基材20的上表面20a的自法线方向观察的形状)设定为矩形,并且将矩形的短边方向设定为X方向,将长边方向设定为Y方向,将多层构造体1的厚度方向设定为Z方向。X方向、Y方向、Z方向彼此正交。在多层构造体1的俯视形状为矩形的情况下,例如,可以设定宽度(X方向)为约1m~10m,高度(Y方向)为约1.5m~3.5m。
另外,在本实施方式中,作为一个例子,在多层构造体1中,在基材20的上表面20a排列有九个层叠部10。但是,在多层构造体1中,在基材20的上表面20a排列的层叠部10根据需要可以设定为两个以上的任意的个数。
在多层构造体1中,各个层叠部10通过粘接剂层15固定于基材20的上表面20a。各个层叠部10包括树脂层11、粘接剂层12、金属层13、以及玻璃层14。玻璃层14在树脂层11之上隔着粘接剂层12层叠。在玻璃层14的靠粘接剂层12一侧的面形成有金属层13。
需要说明的是,层叠部10具有可挠性,但是作为多层构造体1整体不一定需要具有可挠性。在作为多层构造体1整体需要可挠性的情况下,例如,能够通过调整基材20的材料、厚度来实现。
在本实施方式中,作为一个例子,树脂层11、粘接剂层12、金属层13、以及玻璃层14的各个俯视形状、即层叠部10的俯视形状为矩形。
多层构造体1可以作为例如穿衣镜使用,此时,优选使相邻的层叠部10的连接点难以用眼睛辨认。即,优选层叠部10在基材20之上无间隙地排列。但是,实际上使相邻的层叠部10的间隙为零是困难的,如图2所示,在X方向上在相邻的层叠部10的连接点处产生间隙S。另外,在Y方向上在相邻的层叠部10的连接点处也相同产生间隙。
优选间隙S为10μm以上500μm以下。通过将间隙S设定为500μm以下,能够使相邻的层叠部10的连接点难以用眼睛辨认。将下限设定为10μm是因为,即使以0μm为目标在基材20之上固定多个层叠部10,现实中也必定会产生约10μm的间隙。但是,若单片化的层叠部10的尺寸精度能够提高,则有可能可以使间隙S小于10μm。
从进一步使相邻的层叠部10的连接点难以用眼睛辨认的观点出发,更优选间隙S为10μm以上200μm以下,进一步优选为10μm以上100μm以下,特别优选为10μm以上50μm以下。若间隙S为50μm以下,则相邻的层叠部10的连接点基本无法用眼睛辨认。
图3是对基材的大小与层叠部的个数与间隙的大小的优选关系进行说明的图,其图示了一个层叠部10。在层叠部10的俯视形状为矩形的情况下,实际上因制造偏差等不会成为完全的矩形,例如,成为图3那样的形状。需要说明的是,在图3中,层叠部10的自矩形的偏差被夸张描绘。
这里,将基材20的X方向的边的长度设定为L,将层叠部10的在X方向大致平行的两个边中的较长的边的长度设定为x。另外,在引出与X方向垂直的线时,将该线与层叠部10的在X方向大致平行的两个边中的较短的边相交的两点间的Y方向的长度设定为dy。dy相当于Y方向的间隙。
在上述条件中,在求出满足L≤n×x的最接近的n(n为2以上的整数)时,优选满足50μm≤n×dy≤500μm。即,在层叠部10的X方向的排列数为n的情况下,优选满足50μm≤n×dy≤500μm。此时,多层构造体的大小与层叠部的个数与间隙的大小成为最优选的关系,间隙变得不明显。
由50μm≤n×dy≤500μm的关系可知,层叠部10的X方向的排列数n越多,越需要将Y方向的间隙dy设定为较小。即,层叠部10的X方向的排列数n越多,越需要以Y方向的间隙dy变小的方式进行紧密排列,若这样排列则间隙变得不明显。
需要说明的是,由于不管层叠部10的大小过大还是过小均难以处理,因此优选设定为容易处理层叠部10的适当的大小。若举出层叠部10的优选大小的一个例子,则X方向以及Y方向的长度各自为约数10cm。
这样,多层构造体1具有在基材20之上排列的多个层叠部10。并且,层叠部10具有树脂层11、以及在树脂层11之上隔着粘接剂层12层叠的玻璃层14,并且在玻璃层14的靠粘接剂层12一侧的面形成有金属层13。另外,玻璃层14的厚度为10μm以上300μm以下。
即,在多层构造体1的各个层叠部10中,玻璃层14的厚度较薄,玻璃层14的表面与金属层13的距离极近。因此,在多层构造体1中,解决了像被二重映出的以往的板玻璃的课题,能够映出清晰的像。另外,玻璃层14的厚度越薄,能够使相邻的层叠部10的连接点越难以用眼睛辨认。
另外,通过将多个层叠部10固定于基材20的构造,可以实现能够映出清晰的像的、能够作为薄玻璃的反射镜使用的大面积的多层构造体。
这里,对多层构造体1的各部分的材料等进行说明。
[树脂层]
树脂层11是成为用于层叠玻璃层14等的基材的层,具有可挠性。树脂层11由一个层或多个层构成。
作为树脂层11的材料,可以举出例如、聚对苯二甲酸乙二酯类树脂、聚萘二甲酸乙二醇酯类树脂等的聚酯纤维类树脂、降冰片烯类树脂等的环烯烃类树脂、聚醚砜类树脂、聚碳酸酯类树脂、丙烯酸类树脂、聚烯烃类树脂、聚酰亚胺类树脂、聚酰胺类树脂、聚酰胺酰亚胺类树脂、聚芳酯类树脂、聚砜类树脂、聚醚酰亚胺类树脂、纤维素类树脂等。在这些之中,从树脂的强韧性的理由出发,优选使用聚对苯二甲酸乙二酯、三乙酰纤维素、丙烯酸。从工业化的观点出发,特别优选使用薄膜状的聚对苯二甲酸乙二酯。
树脂层11的颜色不特别限定,可以为透明也可以为不透明。树脂层11可以包括无机颗粒等的添加剂。树脂层11的厚度(树脂层11由多层组成的情况下其总厚度)从可挠性的观点出发可以为10μm以上1000μm以下的范围内,优选为25μm以上500μm以下,更优选为25μm以上300μm以下。
[玻璃层]
玻璃层14不特别限定,可以根据目的采用适合的玻璃。根据组成的分类,玻璃层14可以举出例如碱石灰玻璃、硼酸玻璃、铝硅酸玻璃、石英玻璃等。另外,根据碱成分的分类,可以举出无碱玻璃、低碱玻璃。优选上述玻璃的碱金属成分(例如,Na2O、K2O、Li2O)的含有量为15重量%以下,更优选为10重量%以下。
考虑玻璃具有的表面硬度、气密性、耐腐蚀性,优选玻璃层14的厚度为10μm以上。另外,对于玻璃层14,期望其具有薄膜那样的可挠性,并且为了使抑制像被二重映出而映出清晰的像成为可能,优选其厚度为300μm以下。更优选玻璃层14的厚度为30μm以上200μm以下,特别优选为50μm以上100μm以下。
优选玻璃层14的波长550nm中的光透射率为85%以上。优选玻璃层14的波长550nm中的折射率为1.4~1.65。优选玻璃层14的密度为2.3g/cm3~3.0g/cm3,更优选为2.3g/cm3~2.7g/cm3
玻璃层14的成形方法不特别限定,可以根据目的采用适合的方法。代表而言,玻璃层14可以以如下方式制作:使包括二氧化硅、氧化铝等的主原料、芒硝、氧化锑等的消泡剂、以及碳等的还原剂的混合物在约1400℃~1600℃的温度下熔融,且成形为薄板状之后,进行冷却。作为玻璃层14的成形方法,可以举出例如流孔下拉法、融流法、浮式法等。通过这些方法成形为板状的玻璃层为了薄板化、提高平滑性,可以根据需要通过氢氟酸等的溶剂进行化学研磨。
[金属层]
金属层13形成于玻璃层14的靠粘接剂层12一侧的面。金属层13是用于反射隔着玻璃层14入射的可视光的层。作为金属层13的材料,优选可视光反射率较高的材料,例如可以举出铝、银、银合金等。金属层13的厚度不特别限定,但是例如为约10nm以上500nm以下。金属层13通过例如溅射法、蒸镀法、电镀法等形成。需要说明的是,可以在玻璃层14的表面(未形成金属层13侧的面)设置防污层、反射防止层、导电层等的功能层。
[粘接剂层]
作为粘接剂层12以及15,可以使用任意适合的粘接剂。从外观的观点出发,优选粘接剂层12以及15的厚度为0.5μm以上25μm以下,更优选为0.5μm以上20μm以下,进一步优选为0.5μm以上5μm以下。
作为粘接剂层12以及15,可以利用例如丙烯酸类粘合剂、硅酮类粘合剂、橡胶类粘合剂、紫外线硬化性丙烯酸类粘接剂、紫外线硬化性环氧树脂类粘接剂、热硬化性环氧树脂类粘接剂、热硬化性三氯氰胺类粘接剂、热硬化性苯酚类粘接剂、乙烯/乙酸乙烯酯(EVA)中间膜、聚乙烯醇缩丁醛(PVB)中间膜等。在这些之中,从紧密结合性、耐久性的理由出发,优选使用环氧树脂类粘接剂。
需要说明的是,在本说明书中,所谓粘合剂是指,在常温下具有粘接性,并且在较轻的圧力下粘接于被粘体的层。因此,即使在将粘贴于粘合剂的被粘体剥离的情况下,粘接剂保持实用的粘合力。另一方面,粘接剂是指,能够通过介于物質之间而将物质结合的层。因此,在将粘贴于粘接剂的被粘体剥离的情况下,粘接剂不具有实用的粘接力。
[基材]
基材20为了防止层叠部10弯曲而由刚性比层叠部10高的材料形成。作为基材20的材料,可以举出例如树脂、玻璃、金属等。在这些之中,从尺寸变化较小的点、平滑性优异的点等发出,优选使用玻璃。需要说明的是,由于基材20自玻璃层14侧观察成为金属层13的下层,因此其与镜子的功能不相关。
若基材20较薄则多层构造体1的整体弯曲,从而在作为镜子的多层构造体1映出的像歪曲。因此,在将基材20的上表面20a的面积设定为S(m2),将基材20的厚度设定为T(mm)时,优选在满足20S≥T≥S的范围内设定厚度T。由此,能够抑制多层构造体1的弯曲,从而能够使在多层构造体1中映出的像难以歪曲。
[制法]
例如,在树脂层11之上隔着粘接剂层12层叠由溅射法等形成有金属层13的玻璃层14,并且例如通过冲压加工等单片化为规定的形状而获得层叠部10。或者,也可以利用卷对卷工艺使树脂层11和形成有金属层13的玻璃层14隔着粘接剂层12连续层叠后,通过冲压加工等单片化为任意的尺寸。单片化后的层叠部10通过层压机等隔着粘接剂层15在基材20之上排列。
[用途]
多层构造体1可以用作薄玻璃的反射镜,具体而言,例如,可以用作穿衣镜、大型防止犯罪反射镜曲面、太阳能发电用反射镜、光学迷彩反射镜、采光反射镜等。对于以下举例示出的多层构造体也相同。
<第一实施方式的变形例>
在第一实施方式的变形例中,示出与第一实施方式构造不同的多层构造体的例子。需要说明的是,在第一实施方式的变形例中,有时省略对于与已经说明的实施方式相同构成部的说明。
图4是举例示出第一实施方式的变形例1的多层构造体的剖视图。需要说明的是,由于第一实施方式的变形例1的多层构造体的俯视图与图1相同,因此省略图示。如图4所示,多层构造体1A在基材20的上表面20a形成有光散射性的着色层22这点与多层构造体1(参照图2等)不同。
着色层22是由不透明的颜色的材料涂覆基材20的上表面而成的层,层厚为约1μm。着色层22为相对于自间隙S入射的光具有光散射性的层即可,可以设定为例如金属风格的银色、白色等的层。这里,光散射性是指,使自间隙S入射的光的至少一部分散射而生成在随机的方向行进的光的性质。着色层22是通过例如通过喷涂法、旋转涂布法等使银纳米颗粒等的金属颗粒分散的涂布液在基材20得上表面20a成膜而形成的。通过金属颗粒在着色层22中分散,能够提高光散射性。
这样,在基材20的上表面20a形成有光散射性的着色层22,从而自间隙S入射的光进行散射。因此,与在相邻的层叠部10的连接点产生的间隙S的大小相同而未形成有着色层22的情况相比,能够使连接点进一步难以用眼睛辨认。当然,更优选与使间隙S变小的对策并用。
图5是举例示出第一实施方式的变形例2的多层构造体的剖视图。需要说明的是,由于第一实施方式的变形例2的多层构造体的俯视图与图1相同,因此省略图示。如图5所示,多层构造体1B在于树脂层11的与隔着粘接剂层12层叠玻璃层14一侧相反侧隔着粘接剂层16层叠有缓冲层17这点与多层构造体1(参照图2)不同。
缓冲层17是位于基材20和树脂层11之间的具有缓冲性的层。从发现良好的缓冲性的观点出发,优选缓冲层17的厚度为100μm以上2000μm以下。作为缓冲层17的材料,可以举出例如聚氨酯类树脂、各种发泡材料等。作为各种发泡材料,可以举出例如聚烯烃类树脂、聚丙烯类树脂、聚苯乙烯类树脂、聚乙烯类树脂等。作为缓冲层17,可以使用市售的发泡片材。作为市售的发泡片材,可以举出例如日东电工株式会社制的SCF(注册商标)。粘接剂层16可以使用作为粘接剂层12以及粘接剂层15举例示出的任意的粘合剂、粘接剂。
这样,通过在树脂层11的下层设置缓冲层17,能够提高多层构造体1B的缓冲性,从而能够缓和自外部施加于多层构造体1B的冲击。需要说明的是,可以代替缓冲层17,或者除了缓冲层17之外,层叠隔热层等的具有其他功能的层。
另外,在图4所示多层构造体1A中,可以在树脂层11和粘接剂层15之间层叠图5所示粘接剂层16以及缓冲层17。
图6是举例示出第一实施方式的变形例3的多层构造体的俯视图。需要说明的是,第一实施方式的变形例3的多层构造体的剖视构造可以设定为与例如图2、图4、或图5的任一者相同。
如图6所示,多层构造体1C混合有两种层叠部10A以及10B,并且整体排列为矩形。在图6的例子中,层叠部10B的X方向的长度与层叠部10A相同,但是其Y方向的长度为层叠部10A的一半。
如此,构成多层构造体的层叠部不需要为一种,可以为两种。或者,构成多层构造体的层叠部可以为三种以上。
另外,层叠部的俯视形状不限于矩形,可以为三角形、六边形等,也可以混合这些形状。另外,多层构造体整体的形状可以不为矩形,例如,可以使俯视形状不同的层叠部混合而设定为任意形状。
另外,多层构造体相对于XY平面不需要为平行的形状,可以为例如弯曲为半圆筒状、圆顶状等的形状。这里,圆顶状是指,多层构造体的表面(玻璃层的表面)的Z方向的位置自周围朝向中心渐增的形状。
需要说明的是,在第一实施方式的图1的情况下,在Y方向相邻的层叠部的连接点在X方向排列成三个直线状的部位存在两处。与此相对,在图6的情况下,在Y方向相邻的层叠部的连接点在X方向排列为两个以上的部位不存在。换言之,在图6的情况下,在Y方向相邻的层叠部的连接点交错配置,连接点彼此不邻接,连接点彼此不连续。
这样,由于存在相邻的层叠部的连接点彼此不连续的部位,即使间隙S的大小相同,也能够使连接点进一步难以用眼睛辨认。在图6中,示出了使在Y方向相邻的层叠部的连接点不连续的例子,但是在使在X方向相邻的层叠部的连接点不连续的情况下也起到相同效果。也就是说,优选在X方向或Y方向的至少一者中,连接点彼此不连续。
以上,对优选实施方式等进行了详述,但是不限于上述实施方式等,可以不超过权利要求书记载的范围地对上述实施方式等施加各种变形以及置换。
本国际申请要求基于2020年3月30日申请的日本专利申请2020-059418号的优先权,并且在本国际申请中引用日本专利申请2020-059418号的全部内容。

Claims (10)

1.一种多层构造体,其具有在基材之上排列的多个层叠部,
上述层叠部包括:
树脂层;
玻璃层,其在上述树脂层之上隔着粘接剂层层叠;以及
金属层,其形成于上述玻璃层的靠上述粘接剂层一侧的面,
上述玻璃层的厚度为10μm以上300μm以下,
上述树脂层的厚度为10μm以上1000μm以下。
2.根据权利要求1所述的多层构造体,其中,
相邻的层叠部间的间隙为10μm以上500μm以下。
3.根据权利要求2所述的多层构造体,其中,
相邻的层叠部间的间隙为10μm以上50μm以下。
4.根据权利要求1至3中任一项所述的多层构造体,其中,
将上述基材的第一方向的边的长度设定为L,将上述层叠部的在与上述第一方向大致平行的两个边中的较长的边的长度设定为x,并且在引出与上述第一方向垂直的线时,将上述线与上述层叠部的在与上述第一方向大致平行的两个边中的较短的边相交的两点间的与上述第一方向垂直的第二方向的长度设定为dy,在求出满足L≤n×x的最接近的n时,满足50μm≤n×dy≤500μm,n为2以上的整数。
5.根据权利要求1至4中任一项所述的多层构造体,其中,
在上述基材供上述层叠部排列的面上,形成有光散射性的着色层。
6.根据权利要求5所述的多层构造体,其中,
金属颗粒在上述着色层中分散。
7.根据权利要求1至6中任一项所述的多层构造体,其中,
存在相邻的上述层叠部的连接点彼此不连续的部位。
8.根据权利要求1至7中任一项所述的多层构造体,其中,
将上述基材的供上述层叠部排列的面的面积设定为S,并且将上述基材的厚度设定为T时,满足20S≥T≥S。
9.根据权利要求1至8中任一项所述的多层构造体,其中,
上述基材为玻璃。
10.根据权利要求1至9中任一项所述的多层构造体,其中,
在上述基材和上述树脂层之间具有缓冲层。
CN202180024391.9A 2020-03-30 2021-03-10 多层构造体 Pending CN115362058A (zh)

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