JP3451785B2 - Transparent multilayer sheet and method for producing the same - Google Patents
Transparent multilayer sheet and method for producing the sameInfo
- Publication number
- JP3451785B2 JP3451785B2 JP09634895A JP9634895A JP3451785B2 JP 3451785 B2 JP3451785 B2 JP 3451785B2 JP 09634895 A JP09634895 A JP 09634895A JP 9634895 A JP9634895 A JP 9634895A JP 3451785 B2 JP3451785 B2 JP 3451785B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- multilayer sheet
- polymethylmethacrylate
- transparent
- mma
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000004417 polycarbonate Substances 0.000 claims description 46
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 11
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 11
- 239000000155 melt Substances 0.000 claims description 9
- 229920000515 polycarbonate Polymers 0.000 claims description 9
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 9
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 9
- 229920001634 Copolyester Polymers 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 7
- -1 polyethylene terephthalate copolymer Polymers 0.000 claims description 5
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 claims description 5
- 229920001577 copolymer Polymers 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims 1
- 239000010410 layer Substances 0.000 description 73
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 22
- 239000011347 resin Substances 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000032798 delamination Effects 0.000 description 4
- 238000005187 foaming Methods 0.000 description 4
- 239000004800 polyvinyl chloride Substances 0.000 description 3
- 229920000915 polyvinyl chloride Polymers 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- 238000007666 vacuum forming Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 2
- 229920005497 Acrypet® Polymers 0.000 description 1
- 239000004419 Panlite Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は屋外看板、高速道路防音
板、店内装飾、ディスプレイ等の用途に適した透明多層
シート及びその製造法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transparent multilayer sheet suitable for outdoor signboards, highway soundproofing boards, in-store decorations, displays and the like and a method for producing the same.
【０００２】[0002]
【従来の技術】従来、透明性を必要とする屋外看板、高
速道路防音板、店内装飾部材等には、国内では、ポリメ
チルメタアクリレート（以下「ＭＭＡ」という）、ポリ
カーボネート（以下「ＰＣ」という）やポリ塩化ビニル
（以下「ＰＶＣ」という）のシートが多く用いられてい
る。一方、海外では近時、米国を中心にして、ポリシク
ロヘキシレンテレフタレート（以下「ＰＣＴ」という）
とポリエチレンテレフタレート（以下「ＰＥＴ」とい
う）の共重合ポリエステル（以下「ＰＥＴＧ」という）
がディスプレイ用途に用いられている。しかしながら、
上記ＭＭＡは、耐衝撃性が弱く仕上げ加工時や製品の移
送中に割れやすいという問題がある。また、ＰＣは、Ｍ
ＭＡより耐候性や表面硬さが劣るほか、二次加工である
真空成形の加熱時に、材料の吸湿に起因する発泡現象等
の問題がある。ＰＶＣは、材料廃棄時の公害問題があ
る。ＰＥＴＧは、耐衝撃性や加工性には優れるが、表面
硬さ、耐候性に劣る問題がある。そこで、耐衝撃性、加
工性に優れるＰＥＴＧの層の表面に、耐候性、表面硬さ
に優れるＭＭＡの層を貼り合わせて一体化した構成が検
討されたが、ＭＭＡの層とＰＥＴＧの層の接着力が弱く
剥離しやすい問題がある。2. Description of the Related Art Conventionally, for outdoor signboards, highway soundproofing boards, in-store decorations, etc. which require transparency, in Japan, polymethylmethacrylate (hereinafter referred to as "MMA") and polycarbonate (hereinafter referred to as "PC") are used. ) Or polyvinyl chloride (hereinafter referred to as “PVC”) sheets are often used. Meanwhile, overseas, recently, mainly in the United States, polycyclohexylene terephthalate (hereinafter referred to as "PCT")
And polyethylene terephthalate (hereinafter referred to as "PET") copolyester (hereinafter referred to as "PETG")
Is used for displays. However,
The above MMA has a problem that it has a low impact resistance and is easily cracked during finishing and during product transfer. In addition, PC is M
In addition to being inferior in weather resistance and surface hardness to MA, there are problems such as foaming phenomenon due to moisture absorption of the material during heating in vacuum forming which is the secondary processing. PVC has a pollution problem at the time of material disposal. PETG is excellent in impact resistance and workability, but has a problem of poor surface hardness and weather resistance. Therefore, a structure in which an MMA layer having excellent weather resistance and a surface hardness is attached to and integrated with the surface of a PETG layer having excellent impact resistance and workability was investigated. There is a problem that the adhesive strength is weak and peeling is easy.
【０００３】[0003]
【発明が解決しようとする課題】本発明が解決しようと
する課題は、耐候性や表面硬さに優れ、かつ、耐衝撃性
があり燃焼時に有害ガスを発生しない層間接着力の大き
い透明多層シートを提供することである。また、そのよ
うな透明多層シートの製造法を提供することである。The problem to be solved by the present invention is to provide a transparent multi-layered sheet having excellent weather resistance and surface hardness, impact resistance, and a large interlayer adhesion which does not generate harmful gas during combustion. Is to provide. Another object is to provide a method for producing such a transparent multilayer sheet.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決するため
に、本発明に係る透明多層シートは、ＰＣＴとＰＥＴの
共重合体であるＰＥＴＧの層の両面にＭＭＡの層を配し
た多層シートにおいて、前記ＰＥＴＧの層とＭＭＡの層
の中間にＰＣの層を一体に配してなることを特徴とす
る。また、本発明に係る別の透明多層シートは、ＰＥＴ
Ｇの層の片面にＭＭＡの層を配した多層シートにおい
て、ＰＥＴＧの層とＭＭＡの層の中間にＰＣの層を一体
に配したことを特徴とする。ＰＥＴＧの層とＭＭＡの層
の中間にこれらと一体に存在するＰＣの層の厚さは、好
ましくは、１０００μｍ以下である。本発明に係る透明
多層シートの製造法は、ＰＥＴＧの層の両面又は片面に
ＭＭＡの層を配した多層シートを共押出するに際し、前
記ＰＥＴＧの層とＭＭＡの層の間にＰＣの層を配して一
体に共押出することを特徴とする。共押出するに際し
て、ＰＣの溶融粘度を、好ましくは、ＰＥＴＧ及びＭＭ
Ａの溶融粘度の０．５〜１．５倍の範囲内とする。ま
た、ＰＣの層の厚みを、好ましくは、５０〜１０００μ
ｍの範囲内とする。また、本発明に係る別の透明多層シ
ートの製造法は、ＰＥＴＧの層の両面又は片面にＰＣの
層を配して一体に共押出し、前記ＰＣの層の表面にＭＭ
Ａのフィルムを熱圧着することを特徴とする。In order to solve the above-mentioned problems, a transparent multilayer sheet according to the present invention is a multilayer sheet in which an MMA layer is arranged on both sides of a PETG layer which is a copolymer of PCT and PET. The PC layer is integrally disposed between the PETG layer and the MMA layer. Another transparent multilayer sheet according to the present invention is PET.
In a multi-layer sheet in which an MMA layer is arranged on one side of a G layer, a PC layer is integrally arranged between the PETG layer and the MMA layer. The thickness of the layer of PC existing integrally with the layer of PETG and the layer of MMA is 1000 μm or less. The method for producing a transparent multi-layer sheet according to the present invention comprises co-extruding a multi-layer sheet having an MMA layer on both sides or one side of a PETG layer, by disposing a PC layer between the PETG layer and the MMA layer. And co-extrude integrally. Upon coextrusion, the melt viscosity of PC is preferably PETG and MM.
It is within the range of 0.5 to 1.5 times the melt viscosity of A. Moreover, the thickness of the layer of the PC is preferably 50 to 1000 μm.
Within the range of m. Another method for producing a transparent multilayer sheet according to the present invention is that a layer of PC is placed on both sides or one side of a layer of PETG and coextruded integrally, and MM is formed on the surface of the layer of PC.
The film of A is thermocompression bonded.
【０００５】[0005]
【作用】本発明に係る透明多層シートは、ＰＥＴＧの層
により耐衝撃性を確保し、表面に配したＭＭＡの層によ
りＰＥＴＧの欠点である耐候性、表面硬さを改善してい
る。ＰＥＴＧの層とＭＭＡの層を直接一体化すると、両
者の接着性が弱く後加工時に層間剥離を起こしやすい
が、両者の間に、各種透明材料を検討した中で、ＰＣの
層を一体に配することで密着性が高まり層間剥離のない
多層シートを得られることを見いだした。これら３種類
の樹脂の組合せによる多層シートは、屈折率の異なる樹
脂の組み合わせでありながら、高い透明性を有してい
る。本発明に係る透明多層シートは、各樹脂層の厚み構
成を特に制限するものではないが、ＰＣの層を殊更厚く
してもそれに伴って接着強度が向上するわけではない。
ＰＣの層が厚くなりすぎると、この多層シートを真空成
形するときの加熱時間が長くなり吸湿に伴う発泡が起こ
るので、この観点からは、ＰＣの層の厚さを１０００μ
ｍ以下にするのが好ましい。上記多層シートを共押出に
より製造すると、各樹脂層間にゴミやほこりが混入する
のを防ぐことができる。この場合、ＰＣの溶融粘度を、
ＰＥＴＧ及びＭＭＡの溶融粘度の０．５〜１．５倍の範
囲内とすると、共押出に際してフローマーク（押出方向
と交差する方向にできる濃度の薄い縞模様）が発生する
のを抑制することができる。また、この場合、ＰＣの層
の厚さを、５０μｍ以上、さらに好ましくは、１００μ
ｍ以上にすることにより、各樹脂層間の接着強度も非常
に大きくなる。The transparent multi-layered sheet according to the present invention has impact resistance secured by the PETG layer, and the weather resistance and surface hardness which are defects of PETG are improved by the MMA layer disposed on the surface. If the PETG layer and the MMA layer are directly integrated, the adhesiveness between them is weak and delamination is likely to occur during post-processing. However, in consideration of various transparent materials, the PC layer is integrated between them. It was found that by doing so, the adhesion is enhanced and a multilayer sheet without delamination can be obtained. The multilayer sheet formed by combining these three kinds of resins has high transparency even though it is a combination of resins having different refractive indexes. The transparent multilayer sheet according to the present invention does not particularly limit the thickness constitution of each resin layer, but even if the PC layer is made particularly thick, the adhesive strength is not improved accordingly.
If the PC layer becomes too thick, the heating time during vacuum forming of this multilayer sheet becomes long and foaming occurs due to moisture absorption. From this point of view, the PC layer thickness is 1000 μm.
It is preferably m or less. When the above-mentioned multilayer sheet is produced by coextrusion, it is possible to prevent dust and dirt from entering between the resin layers. In this case, the melt viscosity of PC is
Within the range of 0.5 to 1.5 times the melt viscosity of PETG and MMA, it is possible to suppress the formation of flow marks (thin striped pattern with a concentration that can be formed in the direction intersecting the extrusion direction) during coextrusion. it can. In this case, the thickness of the PC layer is 50 μm or more, more preferably 100 μm.
When it is at least m, the adhesive strength between the resin layers will also become very large.
【０００６】[0006]
【実施例】以下の実施例で用いたＰＥＴＧは、屈折率：
１．５６９、全光線透過率：８５％、キャピログラフに
よる溶融粘度：８０００〜１００００ポイズ（２４０
℃，剪断速度：６０．８ｓｅｃ~1において測定）の物性
をもつ市販のものである。また、ＭＭＡは、屈折率：
１．４９４、全光線透過率：９１％、キャピログラフに
よる溶融粘度：８０００〜１２０００ポイズ（２４０
℃，剪断速度６０．８ｓｅｃ~1において測定）の物性を
もつ市販のものである。必要に応じて紫外線吸収剤、着
色剤を添加してもよい。さらに、ＰＣは、屈折率：１．
５８５、全光線透過率：８７〜９１％、キャピログラフ
による溶融粘度：４０００〜１８０００ポイズ、好まし
くは９０００〜１１０００ポイズ（２４０℃，剪断速
度：６０．８ｓｅｃ~1において測定）の物性をもつ市販
のものである。必要に応じて紫外線吸収剤、着色剤を添
加しても良い。ＭＭＡの層は、厚くすると耐候性は向上
するが衝撃強度の低下を招くので、好ましくは、５００
μｍ以下にする。また、ＭＭＡの層は、薄いと表面硬さ
の低下を招き、共押出時にフローマークの外観不良を伴
うので、共押出に際しては、好ましくは、１００μｍ以
上、さらに好ましくは、２００μｍ以上がよい。EXAMPLES PETG used in the following examples has a refractive index:
1.569, total light transmittance: 85%, melt viscosity by capillograph: 8000-10000 poise (240
It is a commercially available product having physical properties of (° C., shear rate: 60.8 sec to 1 ). In addition, MMA has a refractive index:
1.494, total light transmittance: 91%, melt viscosity by capillograph: 8000 to 12000 poise (240
It is a commercially available product having physical properties of measured at 0 ° C. and a shear rate of 60.8 sec- 1 . You may add a ultraviolet absorber and a coloring agent as needed. Further, the PC has a refractive index of 1.
585, total light transmittance: 87-91%, melt viscosity by capillograph: 4000-18000 poise, preferably 9000-11000 poise (measured at 240 ° C., shear rate: 60.8 sec- 1 ) Is. You may add a ultraviolet absorber and a coloring agent as needed. When the MMA layer is thickened, the weather resistance is improved, but the impact strength is lowered.
It is less than μm. Further, when the MMA layer is thin, the surface hardness is lowered, and the appearance of the flow mark is deteriorated during coextrusion.
【０００７】以下、本発明の実施例を具体的に説明す
る。
実施例１〜７
図１に示すように、ＰＥＴＧの層１の片面にＰＣの層
２、ＭＭＡの層３をこの順序で一体化した透明三層シー
ト（２０００μｍ厚み）を、共押出により製造した。Ｐ
ＥＴＧはイーストマンコダック製「ＥＫＴＡＲＧＮ００
２」、ＰＣは帝人化成製「パンライトＡＤ５５０３」、
ＭＭＡは三菱レイヨン製「アクリペットＩＲＳ４０４」
を使用し、各樹脂層の主な押出条件は、表１に示すとお
りとした。そして、表２及び表３には、各実施例、後述
する従来例における押出時の各樹脂層の溶融粘度と各樹
脂層の厚さ構成を示した。また、表２及び表３には、表
４に示した条件に基づき測定した各多層シートの特性を
併せて示した。The embodiments of the present invention will be specifically described below. Examples 1 to 7 As shown in FIG. 1, a transparent three-layer sheet (2000 μm thick) in which a PC layer 2 and an MMA layer 3 were integrated in this order on one surface of a PETG layer 1 was produced by coextrusion. . P
ETG is made by Eastman Kodak "EKTARGN00
2 ", PC is" Panlite AD5503 "manufactured by Teijin Kasei,
MMA is Mitsubishi Rayon "Acrypet IRS404"
Was used, and the main extrusion conditions for each resin layer were as shown in Table 1. Then, Tables 2 and 3 show the melt viscosity of each resin layer at the time of extrusion and the thickness configuration of each resin layer in each of the examples and the conventional example described later. In addition, Tables 2 and 3 also show the characteristics of each multilayer sheet measured under the conditions shown in Table 4.
【０００８】尚、実施例２は、ＰＣの押出温度を下げて
その溶融粘度を実施例１より上げたものであり、実施例
３はＰＣの層の厚みを実施例１より薄くしたものであ
り、実施例４はＰＣの層の厚みを実施例１より厚くした
ものであるが、これら実施例１〜４の多層シートは、層
間剥離、フローマークがなくその他の性能も良好な結果
が得られた。実施例５はＰＣの押出温度を上げてその溶
融粘度をＭＭＡの０．４７倍まで下げたものであり、実
施例６はＰＣの押出温度を下げてその溶融粘度をＭＭＡ
の２．１倍まで上げたものである。これらは、フローマ
ーク不良が見られたが、他の性能は良好な結果が得られ
た。実施例７はＰＣの層の厚みを厚くしたものであり、
シートを加熱時にＰＣの層で発泡現象が見られたが、他
の性能は良好な結果が得られた。In Example 2, the extrusion temperature of PC was lowered and its melt viscosity was increased from that of Example 1, and in Example 3, the layer of PC was thinner than that of Example 1. In Example 4, the thickness of the PC layer was made thicker than in Example 1, but the multilayer sheets of Examples 1 to 4 were free from delamination and flow marks, and other good results were obtained. It was In Example 5, the extrusion temperature of PC was raised to lower its melt viscosity to 0.47 times that of MMA. In Example 6, the extrusion temperature of PC was lowered to increase its melt viscosity to MMA.
Up to 2.1 times. In these samples, flow mark defects were observed, but other performances were good. Example 7 is a thicker layer of PC,
A foaming phenomenon was observed in the PC layer when the sheet was heated, but other performances were good.
【０００９】実施例８
ＰＥＴＧとＰＣを共押出して二層シートとし、共押出し
直後にその熱を利用してＰＣの層の表面にＭＭＡのフィ
ルムを熱圧着したものである。表面硬さが若干低下する
他は良好な結果が得られた。表面硬さが若干低下してい
るのは、熱圧着に際してＭＭＡのフィルムを巻物から供
給するために、多少やわらかいＭＭＡを使用しているた
めである。Example 8 PETG and PC were coextruded into a two-layer sheet, and immediately after coextrusion, the heat was used to thermocompress an MMA film on the surface of the PC layer. Good results were obtained except that the surface hardness was slightly lowered. The reason why the surface hardness is slightly decreased is that a somewhat softer MMA is used in order to supply the MMA film from the roll at the time of thermocompression bonding.
【００１０】従来例１
ＰＣの層をなくしてＰＥＴＧとＭＭＡを共押出したもの
であるが、両者の接着性が小さく層間剥離が発生した。Conventional Example 1 PET was coextruded with MMA without the PC layer, but the adhesiveness between them was small and delamination occurred.
【００１１】[0011]
【表１】 [Table 1]
【００１２】[0012]
【表２】 [Table 2]
【００１３】[0013]
【表３】 [Table 3]
【００１４】[0014]
【表４】 [Table 4]
【００１５】上記の実施例では、三層の透明シートにつ
いて説明したが、図２に示すように、ＰＥＴＧの層１の
両面にＰＣの層２、ＭＭＡの層３を、この順序で上記実
施例に準じて一体化した五層の透明シートも上記と同様
の効果を有している。また、本発明に係る透明多層シー
トは、ＰＥＴＧの層、ＰＣの層、ＭＭＡの層を個別に押
出成形してから、各層を一体に熱圧着して製造してもよ
い。In the above embodiment, a three-layer transparent sheet has been described, but as shown in FIG. 2, a layer 2 of PC and a layer 3 of MMA are provided on both sides of a layer 1 of PETG, in this order. The five-layer transparent sheet integrated in accordance with the above also has the same effect as above. The transparent multilayer sheet according to the present invention may be manufactured by individually extruding the PETG layer, the PC layer, and the MMA layer and then thermocompressing the layers integrally.
【００１６】[0016]
【発明の効果】上述したように、本発明に係る透明多層
シートは、耐候性、表面硬さに優れるＭＭＡの層と耐衝
撃性の良いＰＥＴＧの層を、ＰＣの層を介して一体化す
ることにより、層間接着力の大きい多層シートとなって
いる。透明性を保持しながら、従来のＭＭＡやＰＣの単
層シートに比べ耐衝撃性、耐候性、耐傷性の点で優れて
いる。ＰＣの層の厚さを１０００μｍ以下にすると、こ
の多層シートを真空成形するときにＰＣの層が発泡する
のを抑制することができる。本発明に係る多層シートを
共押出により製造する場合、ＰＣの溶融粘度を、ＰＥＴ
Ｇ及びＭＭＡの溶融粘度の０．５〜１．５倍の範囲内と
すると、共押出に際してフローマークの発生を抑制でき
る。As described above, in the transparent multilayer sheet according to the present invention, the MMA layer having excellent weather resistance and surface hardness and the PETG layer having good impact resistance are integrated via the PC layer. As a result, a multi-layer sheet having a high interlayer adhesive strength is obtained. While maintaining transparency, it is superior in impact resistance, weather resistance, and scratch resistance to conventional MMA and PC single-layer sheets. When the thickness of the PC layer is 1000 μm or less, foaming of the PC layer can be suppressed when vacuum forming this multilayer sheet. When the multilayer sheet according to the present invention is produced by coextrusion, the melt viscosity of PC is
When the melt viscosity of G and MMA is in the range of 0.5 to 1.5 times, generation of flow marks can be suppressed during coextrusion.
【図１】本発明に係る透明多層シートの実施例を示す断
面図である。FIG. 1 is a sectional view showing an embodiment of a transparent multilayer sheet according to the present invention.
【図２】本発明に係る透明多層シートの他の実施例を示
す断面図である。FIG. 2 is a sectional view showing another embodiment of the transparent multilayer sheet according to the present invention.
１はＰＥＴＧの層 ２はＰＣの層 ３はＭＭＡの層 1 is a layer of PETG 2 is a layer of PC 3 is the layer of MMA
フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B32B 1/00 - 35/00 Continuation of front page (58) Fields surveyed (Int.Cl. 7 , DB name) B32B 1/00-35/00
Claims (7)
リエチレンテレフタレートの共重合ポリエステルの層の
両面にポリメチルメタアクリレートの層を配した多層シ
ートにおいて、 前記共重合ポリエステルの層とポリメチルメタアクリレ
ートの層の中間にポリカーボネートの層を一体に配した
ことを特徴とする透明多層シート。1. A multilayer sheet in which a polymethylmethacrylate layer is provided on both surfaces of a polycyclohexylene terephthalate / polyethylene terephthalate copolymer polyester layer, wherein a polymethylmethacrylate layer is provided between the copolymer polyester layer and the polymethylmethacrylate layer. A transparent multi-layer sheet having a polycarbonate layer integrally arranged.
リエチレンテレフタレートの共重合ポリエステルの層の
片面にポリメチルメタアクリレートの層を配した多層シ
ートにおいて、 前記共重合ポリエステルの層とポリメチルメタアクリレ
ートの層の中間にポリカーボネートの層を一体に配した
ことを特徴とする透明多層シート。2. A multilayer sheet in which a layer of polymethylmethacrylate is provided on one side of a layer of copolyester of polycyclohexylene terephthalate and polyethylene terephthalate, wherein a layer of polymethylmethacrylate is provided between the layer of copolyester and the layer of polymethylmethacrylate. A transparent multi-layer sheet having a polycarbonate layer integrally arranged.
ｍ以下であることを特徴とする請求項１又は２に記載の
透明多層シート。3. The polycarbonate layer has a thickness of 1000 μm.
It is m or less, The transparent multilayer sheet of Claim 1 or 2 characterized by the above-mentioned.
リエチレンテレフタレートの共重合ポリエステルの層の
両面又は片面にポリメチルメタアクリレートの層を配し
た多層シートを共押出するに際し、前記共重合ポリエス
テルの層とポリメチルメタアクリレートの層の間にポリ
カーボネートの層を配して一体に共押出することを特徴
とする透明多層シート製造法。4. When coextruding a multilayer sheet having a polymethylmethacrylate layer on both sides or one side of a copolyester layer of polycyclohexylene terephthalate and polyethylene terephthalate, said copolyester layer and polymethylmethacrylate are coextruded. A method for producing a transparent multilayer sheet, which comprises co-extruding a polycarbonate layer between acrylate layers.
溶融粘度を共重合ポリエステル及びポリメチルメタアク
リレートの溶融粘度の０．５〜１．５倍の範囲内とする
ことを特徴とする請求項４記載の透明多層シート製造
法。5. The melt viscosity of the polycarbonate during co-extrusion is set within a range of 0.5 to 1.5 times the melt viscosity of the copolyester and polymethylmethacrylate. Transparent multilayer sheet manufacturing method.
００μｍの範囲内とすることを特徴とする請求項４又は
５に記載の透明多層シート製造法。6. A polycarbonate layer having a thickness of 50 to 10
The method for producing a transparent multilayer sheet according to claim 4 or 5, wherein the thickness is within a range of 00 µm.
リエチレンテレフタレートの共重合ポリエステルの層の
両面又は片面にポリカーボネートの層を配して一体に共
押出し、ポリカーボネートの層の表面にポリメチルメタ
アクリレートのフィルムを熱圧着することを特徴とする
透明多層シート製造法。7. A polycarbonate layer is disposed on both sides or one side of a copolyester layer of polycyclohexylene terephthalate and polyethylene terephthalate and coextruded integrally, and a polymethylmethacrylate film is thermocompression bonded to the surface of the polycarbonate layer. A method for producing a transparent multilayer sheet, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09634895A JP3451785B2 (en) | 1995-04-21 | 1995-04-21 | Transparent multilayer sheet and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09634895A JP3451785B2 (en) | 1995-04-21 | 1995-04-21 | Transparent multilayer sheet and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08290532A JPH08290532A (en) | 1996-11-05 |
| JP3451785B2 true JP3451785B2 (en) | 2003-09-29 |
Family
ID=14162507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09634895A Expired - Lifetime JP3451785B2 (en) | 1995-04-21 | 1995-04-21 | Transparent multilayer sheet and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3451785B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11022744B2 (en) | 2017-06-05 | 2021-06-01 | Sabic Global Technologies B.V. | Multilayer polymeric films and the methods of making thereof |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100316364B1 (en) * | 1997-11-04 | 2002-07-02 | 사공수영 | Multilayer sheet improved with impact resistance and weatherability |
| DE102006060163A1 (en) * | 2006-12-18 | 2008-06-19 | Evonik Röhm Gmbh | film composite |
| JP5253925B2 (en) * | 2008-08-22 | 2013-07-31 | 出光興産株式会社 | Multilayer optical sheet |
-
1995
- 1995-04-21 JP JP09634895A patent/JP3451785B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11022744B2 (en) | 2017-06-05 | 2021-06-01 | Sabic Global Technologies B.V. | Multilayer polymeric films and the methods of making thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08290532A (en) | 1996-11-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101668630B (en) | Multiple layer polymer interlayers having an embossed surface | |
| KR100966062B1 (en) | Laminate film for metal coating and laminate film for coating metal for use in screen board | |
| KR970706961A (en) | Self-Adhering Polyvinyl Chloride Safety Glass Interlayer | |
| RU2007137765A (en) | INTERMEDIATE POLYMERIC LAYERS OF THE WEDGE-SHAPED FORM, REDUCING THE SOUND | |
| RU2003112222A (en) | MULTI-LAYERED GLASS RESISTANT TO INTRODUCTION | |
| IL186063A (en) | Polymer interlayers comprising skin layers | |
| US9746591B2 (en) | Multi-layer microprismatic retroreflective sheeting and method of manufacturing the same | |
| JP2017065966A (en) | Laminated glass | |
| US9568650B2 (en) | Privacy securing film | |
| JP2023508282A (en) | Wedge-shaped multilayer interlayer with outer skin layers of varying thickness | |
| JP3451785B2 (en) | Transparent multilayer sheet and method for producing the same | |
| JP2006500603A5 (en) | ||
| JP2943962B2 (en) | Weather resistant decorative sheet | |
| WO2015147218A1 (en) | Intermediate film for laminated glass and laminated glass | |
| KR101515277B1 (en) | Retro-reflectionfilm and Preparing method of thereof | |
| KR101647389B1 (en) | 2 layer coextruding retro-reflection film and preparing method of thereof | |
| CN219349177U (en) | Polarizing film | |
| JP2015193514A (en) | Thermoplastic resin film, and laminated glass | |
| CN2889770Y (en) | Automotive sunshade cover | |
| WO2024071342A1 (en) | Intermediate film for laminated glass, and laminated glass | |
| JPH05100683A (en) | Soundproofing wall | |
| TWI592548B (en) | Building material plate and manufacturing method of the same and door sheet structure, bathroom door-plate, kitchen door-plate, bedroom door-plate, conference room door-plate and office partition | |
| JP2001071444A (en) | Laminated sheet | |
| CN111890753A (en) | Novel EMUs windshield sandwich structure | |
| JP2022120897A (en) | Translucent radio wave absorber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080718 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080718 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090718 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100718 Year of fee payment: 7 |