JPH08224848A5 - - Google Patents

Info

Publication number
JPH08224848A5
JPH08224848A5 JP1995345386A JP34538695A JPH08224848A5 JP H08224848 A5 JPH08224848 A5 JP H08224848A5 JP 1995345386 A JP1995345386 A JP 1995345386A JP 34538695 A JP34538695 A JP 34538695A JP H08224848 A5 JPH08224848 A5 JP H08224848A5
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JP
Japan
Prior art keywords
outer layer
viscosity
polycarbonate
base sheet
lengths
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.)
Granted
Application number
JP1995345386A
Other languages
English (en)
Other versions
JP3606977B2 (ja
JPH08224848A (ja
Filing date
Publication date
Priority claimed from DE4444868A external-priority patent/DE4444868A1/de
Application filed filed Critical
Publication of JPH08224848A publication Critical patent/JPH08224848A/ja
Publication of JPH08224848A5 publication Critical patent/JPH08224848A5/ja
Application granted granted Critical
Publication of JP3606977B2 publication Critical patent/JP3606977B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Claims (4)

  1. 1.1紫外線吸収剤を含有しないかまたは>0〜1重量%の紫外線吸収剤を含有しそして280℃および100秒-1の剪断速度における500Pa・s〜2500Pa・sの粘度を有する熱可塑性ポリカーボネートのベースシート、および
    1.2そのベースシートの少なくとも一面上にある、2重量%〜20重量%の紫外線吸収剤の含有量を有しそして280℃および100秒-1の剪断速度における200Pa・s〜2300Pa・sの粘度を有する熱可塑性ポリカーボネートの外側層
    を含有しており、外側層1.2の粘度が各々のベースシート1.1の粘度より各場合とも少なくとも50Pa・s低いこと、並びに、
    芯物質および外側層の融解された長さ部分を共押し出しアダプターを用いて一緒にしそして引き続き閉鎖押し出しダイの中で所望する形状に成形することによって得られるものであること、
    を特徴とする紫外線保護された多層ポリカーボネートシート。
  2. 1本発明に従うベースシート1.1、
    2ベースシート1.1の少なくとも一面上にある、本発明に従う外側層1.2、および
    3ベースシート1.1から離れて面する外側層1.2の少なくとも一面上にある、ポリカーボネートの保護層
    を含有しており、それが0.1重量%〜20重量%の紫外線吸収剤含有量、280℃および100秒-1の剪断速度における200Pa・s〜2300Pa・sの粘度、および2μm〜100μmの厚さを有しており、ここで保護層3と外側層1.2の間の粘度における差が各場合とも任意の量であるかまたは0Pa・sであること、並びに、
    芯物質および外側層の融解された長さ部分を共押し出しアダプターを用いて一緒にしそして引き続き閉鎖押し出しダイの中で所望する形状に成形することによって得られるものであること、
    を特徴とする請求項1に従うポリカーボネートシート。
  3. 芯物質および外側層の融解された長さ部分を共押し出しアダプターを用いて一緒にしそして引き続き閉鎖押し出しダイの中で所望する形状に成形することを特徴とする、共押し出しにより請求項1のポリカーボネートシートを製造する方法。
  4. 芯物質および外側層の融解された長さ部分を共押し出しアダプターを用いて一緒にしそして引き続き閉鎖押し出しダイの中で所望する形状に成形することを特徴とする、共押し出しにより請求項2のポリカーボネートシートを製造する方法。
JP34538695A 1994-12-16 1995-12-11 紫外線−保護された多層ポリカーボネートシート Expired - Lifetime JP3606977B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4444868.6 1994-12-16
DE4444868A DE4444868A1 (de) 1994-12-16 1994-12-16 UV-geschützte, mehrschichtige Polycarbonatplatten

Publications (3)

Publication Number Publication Date
JPH08224848A JPH08224848A (ja) 1996-09-03
JPH08224848A5 true JPH08224848A5 (ja) 2004-10-07
JP3606977B2 JP3606977B2 (ja) 2005-01-05

Family

ID=6535992

Family Applications (1)

Application Number Title Priority Date Filing Date
JP34538695A Expired - Lifetime JP3606977B2 (ja) 1994-12-16 1995-12-11 紫外線−保護された多層ポリカーボネートシート

Country Status (8)

Country Link
US (1) US5846659A (ja)
EP (1) EP0716919B1 (ja)
JP (1) JP3606977B2 (ja)
KR (1) KR100361786B1 (ja)
AT (1) ATE218973T1 (ja)
DE (2) DE4444868A1 (ja)
ES (1) ES2178661T3 (ja)
IL (1) IL116389A (ja)

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