Biaxially oriented polyester film, and a production method thereof
    1.
    发明申请
    Biaxially oriented polyester film, and a production method thereof 有权
    双轴取向聚酯膜及其制造方法

    公开(公告)号:US20020167111A1

    公开(公告)日:2002-11-14

    申请号:US10118910

    申请日:2002-04-10

    IPC分类号: B29C055/14

    摘要: An object of the present invention is to provide a biaxially oriented high quality polyester film excellent in thermal dimensional stability and clarity and also excellent in productivity, and also to provide a production process thereof. Another object is to provide a biaxially oriented polyester film greatly improved in the practical properties respected in various applications of the polyester film, such as the recording track shift in magnetic recording tape application, curling in magnetic recording card application, dimensional change during process in printing plate application, printing shift in ribbon application, thermostability in capacitor application, and perforation sensitivity and low temperature curling in heat-sensitive mimeograph stencil application. The objects of the present invention can be achieved by a biaxially oriented polyester film, comprising a polyester (A) mainly composed of ethylene terephthalate and a polyether imide (B), having a single glass transition temperature, and having a refractive index of 1.60 to 1.80 at least in either the machine direction or the transverse direction.

    摘要翻译: 本发明的目的是提供热尺寸稳定性和透明度优异且生产率优异的双轴取向高品质聚酯薄膜,并提供其制造方法。 另一个目的是提供在聚酯薄膜的各种应用中所具有的实用性能中大大提高的双轴取向聚酯薄膜,例如磁记录带应用中的记录轨迹偏移,磁记录卡应用中的卷曲,印刷过程中的尺寸变化 板材应用,色带应用中的印刷移位,电容器应用中的热稳定性,以及热敏油版印刷模版应用中的穿孔灵敏度和低温卷曲。 本发明的目的可以通过双轴取向的聚酯薄膜来实现,所述双轴取向聚酯薄膜包括主要由对苯二甲酸乙二酯组成的聚酯(A)和具有单一玻璃化转变温度的聚醚酰亚胺(B)),折射率为1.60至 至少在机器方向或横向方向上为1.80。

    Toughened biaxially oriented film
    3.
    发明申请
    Toughened biaxially oriented film 失效
    增韧双轴取向薄膜

    公开(公告)号:US20020190436A1

    公开(公告)日:2002-12-19

    申请号:US09855441

    申请日:2001-05-15

    摘要: Toughened biaxially oriented polyamide films prepared by dry blending i) a polyamide homopolymer, copolymer, or blends thereof; and ii) a functionalized polyolefin terpolymer comprising maleic anhydride, ethyl acrylate, and an olefin, to thereby form a dry mixture. The dry mixture is melted to form a polymer blend, which is then formed into a polymer film. The edges of the film are pinned to a casting roll, and the film is plasticized in at least one water bath. The polymer film is subsequently biaxially oriented. The result is a toughened biaxially oriented film which is resistant to pinholes, cracks, and other structural defects. Such films are particularly suited for making packaging materials for various food products.

    摘要翻译: 通过干混合制备的增韧的双轴取向聚酰胺膜i)聚酰胺均聚物,共聚物或其共混物; 和ii)包含马来酸酐,丙烯酸乙酯和烯烃的官能化聚烯烃三元共聚物,从而形成干燥混合物。 将干燥的混合物熔化以形成聚合物共混物,然后将其形成聚合物膜。 将薄膜的边缘固定在铸辊上,并将薄膜在至少一个水浴中塑化。 随后将聚合物膜双轴取向。 结果是增韧的双轴取向膜,其耐小针孔,裂纹等结构缺陷。 这种膜特别适用于制造各种食品的包装材料。

    Transparent, multilayer, biaxially oriented polyester film, and process for its production
    4.
    发明申请
    Transparent, multilayer, biaxially oriented polyester film, and process for its production 失效
    透明,多层,双轴取向聚酯薄膜及其生产工艺

    公开(公告)号:US20030064214A1

    公开(公告)日:2003-04-03

    申请号:US10117619

    申请日:2002-04-05

    摘要: The invention relates to a transparent, biaxially oriented polyester film with a base layer B which is composed of at least 80% by weight of a thermoplastic polyester, and with at least one outer layer A. Another polymeric layer made from a copolymer crosslinked using an acrylic and/or methacrylic compound, has been applied to that side of the film opposite to the outer layer A. The film has low oxygen transmission and exhibits very good adhesion between the respective layers. The coated film moveover has low coefficient of friction, excellent windability, and excellent antistatic performance. It is particularly suitable for packaging purposes, specifically for packaging foodstuffs or other consumable items. The invention further relates to a process for the production of the film.

    摘要翻译: 本发明涉及一种透明的双轴取向聚酯薄膜,其具有由至少80重量%的热塑性聚酯和至少一个外层A组成的基底层B.另一聚合物层由使用 丙烯酸和/或甲基丙烯酸类化合物已经被施加到与外层A相对的膜的那一侧。该膜具有低的透氧性,并且在各层之间表现出非常好的粘合性。 涂膜移动具有低摩擦系数,良好的缠绕性和优异的抗静电性能。 它特别适用于包装目的,特别适用于包装食品或其他消耗品。 本发明还涉及一种生产该膜的方法。

    Process for producing a biaxially oriented polyester film and biaxially oriented polyester film
    6.
    发明申请
    Process for producing a biaxially oriented polyester film and biaxially oriented polyester film 失效
    双轴取向聚酯薄膜和双轴取向聚酯薄膜的制造方法

    公开(公告)号:US20020155268A1

    公开(公告)日:2002-10-24

    申请号:US09937939

    申请日:2001-10-23

    IPC分类号: B32B027/36 B29C055/14

    摘要: The present invention is directed to a process for producing a biaxially oriented polyester film which comprises: subjecting a polyester film to simultaneous biaxial stretching in a stretching apparatus constructed to simultaneously stretch the film in the lengthwise and widthwise directions thereof: and subsequently subjecting the film to successive biaxial stretching in the lengthwise and widthwise directions thereof in the same apparatus as mentioned above. With this process, a film can be efficiently formed, without film breaking, which film is small in thickness and greatly strong in its lengthwise and widthwise directions.

    摘要翻译: 本发明涉及一种双轴取向聚酯薄膜的制造方法,该方法包括:在构成为在长度方向和宽度方向上同时拉伸薄膜的拉伸装置中对聚酯薄膜进行同时双轴拉伸:接着, 在与上述相同的装置中沿其长度方向和宽度方向连续双轴拉伸。 通过该方法,可以有效地形成膜,而不会发生膜断裂,该膜的厚度小,并且其长度方向和宽度方向具有很大的强度。

    Method of controlling width of polyester film support
    7.
    发明申请
    Method of controlling width of polyester film support 失效
    控制聚酯薄膜支撑宽度的方法

    公开(公告)号:US20020121727A1

    公开(公告)日:2002-09-05

    申请号:US09751117

    申请日:2000-12-29

    IPC分类号: B29C055/14 D06C003/00

    摘要: A method for controlling the width of a polyester film support comprising, in order, the steps of: (a) extruding a polyester resin using one or more extruders; (b) casting the resin on a casting wheel to form a polyester sheet; (c) stretching the polyester sheet along the machine direction by ratios of 3 to 5 times at temperatures ranging from above the glass transition temperature to below the thermal crystallization temperature, wherein the machine contains extended edge rollers (14) in the drafter at the point where stretching occurs; (d) stretching the polyester sheet along the transverse direction by ratios of 3 to 5 times at temperatures ranging from above the glass transition temperature to below the thermal crystallization temperature; and (e) heat setting the polyester sheet at temperatures ranging from 180 to 250null C.

    摘要翻译: 一种控制聚酯薄膜载体宽度的方法,其包括以下步骤:(a)使用一种或多种挤出机挤出聚酯树脂; (b)在铸轮上铸造树脂以形成聚酯片; (c)在高于玻璃化转变温度至低于热结晶温度的温度范围内沿着机器方向拉伸聚酯片材的比例为3至5倍,其中该机器在起点处在该点处包含延伸的边缘辊(14) 发生拉伸 (d)在高于玻璃化转变温度至低于热结晶温度的温度下,沿着横向拉伸聚酯片材的比例为3至5倍; 和(e)在180-250℃的温度范围内热定型聚酯薄片。