HEAT-SHRINKABLE POLYESTER FILM
    6.
    发明申请
    HEAT-SHRINKABLE POLYESTER FILM 有权
    热收缩聚酯薄膜

    公开(公告)号:US20150218308A1

    公开(公告)日:2015-08-06

    申请号:US14424339

    申请日:2013-08-28

    Abstract: The invention provides a heat-shrinkable polyester film with high mechanical strength in a width direction that is orthogonal to the main shrinking direction and high tensile rupture elongation in the film width direction after being subjected to an aging treatment in a high-temperature environment. The heat-shrinkable polyester film is made from a polyester resin containing ethylene terephthalate as the main component and a monomer component that can serve as an amorphous component in an amount of 0 mol % or more and less than 1 mol % relative to the total amount of polyester resin components.

    Abstract translation: 本发明提供一种在高温环境下进行时效处理之后,在宽度方向上具有与主收缩方向正交的高机械强度和膜宽度方向的高拉伸断裂伸长率的热收缩性聚酯膜。 热收缩性聚酯膜由含有对苯二甲酸乙二醇酯作为主要成分的聚酯树脂制成,单体成分相对于总量为0mol%以上且小于1mol%的单体成分 的聚酯树脂组分。

    Film Formed from a Blend of Biodegradable Aliphatic-Aromatic Copolyesters
    10.
    发明申请
    Film Formed from a Blend of Biodegradable Aliphatic-Aromatic Copolyesters 有权
    由可生物降解脂肪族芳族共聚酯的混合物形成的膜

    公开(公告)号:US20090157020A1

    公开(公告)日:2009-06-18

    申请号:US11956419

    申请日:2007-12-14

    Abstract: A film that is formed from a biodegradable polymer blend of different aliphatic-aromatic copolyesters is provided. More specifically, the blend contains a first copolyester formed from a terephthalic acid monomer. The use of a terephthalic acid monomer results in a polymer chain containing 1,4-(para-) terephthalate units linked in a generally linear configuration (e.g., ˜180°). The blend also contains a second aliphatic-aromatic copolyester formed from a phthalic acid and/or isophthalic acid monomer. The use of such a monomer results in a polymer chain containing 1,2-(ortho-) and/or 1,3-(meta-) linked units. The inclusion of 1,2-(ortho-) and/or 1,3-(meta-) linked units into the polymer backbone of the second copolyester introduces an angle or “kink” (e.g., ˜120° kink for a 1,3-linkage) into the otherwise linear polymer chain. The “kinks” in the second copolyester backbone reduce its melting point and degree of crystallinity, which have an influence on its physical properties (e.g., toughness, tensile strength, and crystallization rate). Thus, the physical properties of the second copolyester may differ substantially from those of the first copolyester. In this regard, the “kinked” second copolyester can provide flexibility for forming films with a wide range of properties that is superior to that which may be achieved using either of copolyesters alone.

    Abstract translation: 提供由不同脂肪族 - 芳族共聚酯的可生物降解的聚合物共混物形成的膜。 更具体地,共混物包含由对苯二甲酸单体形成的第一共聚酯。 对苯二甲酸单体的使用导致含有以大致线性构型(例如约180°)连接的1,4-对 - 对苯二甲酸酯单元的聚合物链。 共混物还含有由邻苯二甲酸和/或间苯二甲酸单体形成的第二种脂族 - 芳族共聚酯。 使用这种单体导致含有1,2-(ortho-)和/或1,3-(meta-)连接单元的聚合物链。 将1,2-(邻 - )和/或1,3-(间 - )连接单元包含在第二共聚聚酯的聚合物骨架中引入角度或“扭结”(例如,对于1, 3键)转化成另外的线性聚合物链。 第二共聚酯骨架中的“扭结”降低了其熔点和结晶度,这对其物理性能(例如韧性,拉伸强度和结晶速率)有影响。 因此,第二共聚多酯的物理性质可能与第一共聚酯的物理性能有很大不同。 在这方面,“扭结”第二共聚酯可以提供柔性,以形成具有宽范围性质的膜,其优于单独使用共聚酯可以实现的。

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