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    • 64. 发明授权
    • Biaxially oriented polyester film to be laminated onto metal plate and molded
    • 将双轴取向的聚酯薄膜层压在金属板上并成型
    • US06472046B1
    • 2002-10-29
    • US09367593
    • 1999-08-18
    • Koji KuboHirofumi MurookaMasahiko KosugeHideshi Kurihara
    • Koji KuboHirofumi MurookaMasahiko KosugeHideshi Kurihara
    • B32B516
    • B32B15/09B29C55/12B32B15/08B32B27/20B32B27/36B32B38/12B32B2307/518B32B2367/00B32B2439/66C08J5/18C08J2367/02Y10S428/91Y10T156/1036Y10T156/1038Y10T156/1043Y10T156/1048Y10T428/24355Y10T428/249981Y10T428/25Y10T428/259Y10T428/31681Y10T428/31786
    • A biaxially oriented polyester film to be laminated onto a metal plate and molded, (A) which comprises a copolyester comprising (a) terephthalic acid in an amount of 82 to 100 mol % and 2,6-naphthalenedicarboxylic acid or a combination of 2,6-naphthalenedicarboxylic acid and other dicarboxylic acid in an amount of 0 to 18 mol % of the total of all dicarboxylic acid components and (b) ethylene glycol in an amount of 82 to 100 mol % and cyclohexanedimethanol or a combination of cyclohexanedimethanol and other diol in an amount of 0 to 18 mol % of the total of all diol components, having (c) a glass transition temperature of 78° C. or more and (d) a melting point of 210 to 250° C., and containing (e) porous silica particles with a pore volume of 0.5 to 2.0 ml/g which are agglomerates of primary particles having an average particle diameter of 0.001 to 0.1 &mgr;m; and (B) which has the following relationship between the highest peak temperature (Te, °C.) of loss elastic modulus and the glass transition temperature (Tg, °C.): Te−Tg≦30. This film has improved taste-and-flavor retainabilities, particularly taste and flavor retainabilities after a retort treatment, without losing the excellent moldability, heat resistance, impact resistance and retort resistance of a copolyester film.
    • 将层压在金属板上并成型的双轴取向聚酯膜(A),其包含共聚酯,该共聚酯包含(a)82〜100摩尔%的对苯二甲酸和2,6-萘二羧酸或2〜 (b)82〜100摩尔%的乙二醇和环己烷二甲醇或环己烷二甲醇与其他二醇的组合的量为0〜18摩尔%的二羧酸和6-萘二羧酸 (c)玻璃化转变温度为78℃以上,(d)熔点为210〜250℃,含有( e)孔体积为0.5〜2.0ml / g的多孔二氧化硅粒子,其为平均粒径为0.001〜0.1μm的一次粒子的凝聚体; 和(B),其在损耗弹性模量的最高峰值温度(Te,℃)与玻璃化转变温度(Tg,℃)之间具有以下关系:Te-Tg <= 30。 该膜具有改善的口味和味道保留性,特别是在蒸煮处理后的味道和风味保持性,而不失去共聚聚酯薄膜的优异成型性,耐热性,耐冲击性和耐蒸煮性。
    • 65. 发明授权
    • White laminated polyester film for metallic plate lamination work
    • 白色层压聚酯薄膜,用于金属板层压工作
    • US06420010B1
    • 2002-07-16
    • US09077837
    • 1998-06-04
    • Tetsuya HasegawaHirofumi MurookaKoji KuboTetsuo Yoshida
    • Tetsuya HasegawaHirofumi MurookaKoji KuboTetsuo Yoshida
    • B32B530
    • B32B27/36B32B15/09B32B27/08B32B27/20B32B2367/00B32B2439/66Y10T428/24355Y10T428/2495Y10T428/25Y10T428/259Y10T428/31681Y10T428/31786
    • The invented film comprises a layer A composed of a copolyester A, a layer B composed of a copolyester B, and a layer C composed of copolyester C. Layer A is laminated to one side of the layer B. Layer C is laminated to the other side of Layer B. Copolyester A contains 0-15 wt % of rutile titanium oxide (average particle diameter 0.1-0.5 &mgr;m). Copolyester B contains 10-50 wt % of the rutile titanium oxide. Copolyester C contains 0-15 wt % of the rutile titanium oxide. Each of Copolyester A, B, and C has a melting point of 210-245° C. The intrinsic viscosity (&eegr;A) of the polymer part of copolyester A, the intrinsic viscosity (&eegr;B) of the polymer part of copolyester B, and the intrinsic viscosity (&eegr;C) of the polymer part of copolyester C satisfy the following relationship. 0.46≦&eegr;B≦0.66, |&eegr;A-&eegr;B|
    • 本发明的薄膜包括由共聚酯A,由共聚聚酯B构成的层B和由共聚聚酯C组成的层C构成的层A.层A层叠在层B的一侧。层C层压到另一层 B层。共聚酯A含有0-15重量%的金红石型氧化钛(平均粒径0.1-0.5μm)。 共聚酯B含有10-50重量%的金红石氧化钛。 共聚酯C含有0-15重量%的金红石氧化钛。 共聚酯A,B和C的共聚物的熔点为210-245℃。共聚酯A的聚合物部分的特性粘度(ηaA),共聚酯B的聚合物部分的特性粘度(etaB) 共聚聚酯C的聚合物部分的特性粘度(η)满足以下关系。 0.46 <= etaB = 0.66,| etaA-etaB | <0.15,| etaC-etaB | <0.15和| etaA-etaC | <0.15。 整个层叠膜的表观密度(rho)与计算出的密度(rho0)的比例满足以下公式:0.75 <= rho / rho0 <= 1.00。 计算出的密度(rho0)由各共聚酯的聚合物部分的密度,金红石型氧化钛的密度,各层的厚度,各共聚酯中的金红石型氧化钛的浓度以及共聚酯层的数量来计算。