LAMINATE

To provide a new structure which is hardly broken.SOLUTION: A laminate 1A has a body portion 9 in which an uppermost layer 3, an intermediate layer 5 and a lowermost layer 7 are laminated in this order. The intermediate layer 5 has one or more low Young's modulus layers 11 having Young's m...

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Bibliographische Detailangaben
Hauptverfasser: SAWADA TAKEYUKI, KAWAI HIDEJI, NAKAO KO, HIRASAWA YOSHIAKI, YAMAMOTO KEISUKE, SHUTO YUKI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide a new structure which is hardly broken.SOLUTION: A laminate 1A has a body portion 9 in which an uppermost layer 3, an intermediate layer 5 and a lowermost layer 7 are laminated in this order. The intermediate layer 5 has one or more low Young's modulus layers 11 having Young's modulus that is lower than that of the uppermost layer 3 and lower than that of the lowermost layer 7. The Young's modulus (GPa) of the low Young's modulus layer and the Young's modulus (GPa) of the uppermost layer satisfy the following expression (1), and the Young's modulus (GPa) of the low Young's modulus layer and the Young's modulus (GPa) of the lowermost layer satisfy the following expression (2). Expression (1): Young's modulus of low Young's modulus layer≤Young's modulus of uppermost layer×0.8. Expression (2): Young's modulus of low Young's modulus layer≤Young's modulus of lowermost layer×0.8.SELECTED DRAWING: Figure 1 【課題】割れにくい新規な構造体を提供する。【解決手段】積層体1Aは、最上層3と、中間層5と、最下層7と、をこの順に積層した本体部9を有する。中間層5は、最上層3に比べてヤング率が低く、かつ、最下層7に比べてヤング率が低い低ヤング率層11を1層以上備えている。また、低ヤング率層のヤング率(GPa)と前記最上層のヤング率(GPa)とは、下記式(1)を満たし、低ヤング率層のヤング率(GPa)と最下層のヤング率(GPa)とは、下記式(2)を満たす積層体。低ヤング率層のヤング率≦最上層のヤング率×0.8...式(1)、低ヤング率層のヤング率≦最下層のヤング率×0.8...式(2)。【選択図】図1