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    • 6. 发明授权
    • Method and apparatus for making polyester web having high adhesion to
coated layers
    • 用于制造具有对涂层具有高粘附性的聚酯纤维网的方法和设备
    • US5895744A
    • 1999-04-20
    • US808367
    • 1997-02-28
    • Janglin ChenGerald G. ReaflerDavid A. GlockerMark M. RomachRichard C. SoperEvelio A. Perez-Albuerne
    • Janglin ChenGerald G. ReaflerDavid A. GlockerMark M. RomachRichard C. SoperEvelio A. Perez-Albuerne
    • B05D3/14B05D7/24B29C55/12B29C59/12B29C71/02B29K67/00B29L7/00C08J7/04G03C1/795G03C1/91B01J19/08
    • G03C1/7954B05D3/144B29C59/12G03C1/915Y10S422/907
    • Method and apparatus for making thermoplastic web from polyester or polyester blends for subsequent aqueous coating without requirement of an undercoat or primer coat for adhesion of subsequent coatings. Feedstock pellets of polymer, such as polyethylene terephthalate or polyethylene naphthalate, are melted in a screw extruder. Molten polymer is extruded from an extrusion die as a thick, high-viscosity ribbon, which is tempered and stretched in both the machine direction and the transverse direction to form a web of biaxially-oriented polymer of the desired width and thickness. The web is heated to a temperature above T.sub.g to set the biaxial orientation and then is glow discharge treated by passing it through an in-line glow discharge apparatus at atmospheric pressure wherein a stable glow discharge is produced in a gas mixture containing helium between two electrodes connected by an alternating power source operating at a voltage between 0.5 kV and 20 kV at a frequency between 60 Hz and 40 MHz. The web is coated with an aqueous gelatin subbing layer. The coated web then is maintained at elevated temperature. The combination of glow discharge treatment before sub coating and heat treatment after sub coating greatly enhances the adhesion of subsequently-coated aqueous gelatin layers such as photographic emulsions to the web, sufficiently that adhesion-promoting U-coat or primer coat as required in prior base-making methods can be omitted.
    • 用于由聚酯或聚酯共混物制备热塑性网的方法和设备用于随后的水性涂料,而不需要底涂层或底漆涂层用于后续涂层的粘附。 聚合物的原料颗粒如聚对苯二甲酸乙二醇酯或聚萘二甲酸乙二醇酯在螺杆挤出机中熔融。 将熔融聚合物从挤出模头挤出为厚的高粘度带,其在纵向和横向方向上进行回火和拉伸,以形成所需宽度和厚度的双轴取向聚合物网。 将幅材加热至高于Tg的温度以设定双轴取向,然后通过在大气压下通过直列辉光放电装置进行辉光放电处理,其中在包含两个电极之间的氦气的气体混合物中产生稳定的辉光放电 通过在60Hz至40MHz之间的频率以0.5kV和20kV之间的电压工作的交流电源连接。 网上涂有明胶胶层。 然后将涂覆的纸幅保持在升高的温度。 在次涂层之前的辉光放电处理和次涂层之后的热处理的组合大大增强了随后涂覆的含水明胶层(例如照相乳剂)对纸幅的粘附,足以使得在先前碱中所需的粘附促进U形涂层或底漆 制造方法可以省略。
    • 10. 发明授权
    • Thermally stable subbing layer for imaging elements
    • 用于成像元件的热稳定底层
    • US6037108A
    • 2000-03-14
    • US67306
    • 1998-04-27
    • Janglin ChenRichard A. CastleYongcai Wang
    • Janglin ChenRichard A. CastleYongcai Wang
    • B32B27/36G03C1/74G03C1/795G03C1/81G03C1/91G03G7/00
    • G03G7/008G03C1/91G03C2001/7956Y10S430/131Y10S430/136Y10S430/155Y10T428/31786Y10T428/31797
    • A support for an imaging element is described, which support comprises a polyester polymeric film having coated thereon a subbing layer comprising gelatin and a multi-hydric organic compound having at least three hydroxyl groups, which gelatin subbing layer coated support has been subjected to a heat treatment to reduce the core-set curling tendency of the polymeric film. Imaging elements for use in an image-forming process is also described, which elements comprise a gelatin subbing layer coated polyester polymeric film support as described above, and an image-forming layer coated on the subbed support. A method for forming a heat-tempered, gelatin-subbed support for an imaging element is also described, comprising coating a subbing layer comprising gelatin and a multi-hydric organic compound having at least three hydroxyl groups on a polyester polymeric film, and subjected the coated film to heat treatment to reduce the core-set curling tendency of the polymeric film. In accordance with preferred embodiment of the invention, the polymer film comprises poly(ethylene naphthalate), the multi-hydric organic compound comprises glycerol, sorbitol, or pentaerythritol, and the heat treatment comprises subjecting the gelatin subbing layer coated support to a temperature of from 50.degree. C. up to the glass transition temperature of the polymeric film for from 0.1 to 1500 hours.
    • 描述了对成像元件的支撑体,其支撑体包括聚酯聚合物膜,其上涂覆有包含明胶的底层和具有至少三个羟基的多羟基有机化合物,该明胶底层涂覆的载体已经经受热 处理以降低聚合物膜的卷芯卷曲倾向。 还描述了用于图像形成过程的成像元件,哪些元件包括如上所述的明胶底层涂覆的聚酯聚合物膜载体和涂覆在辅助底板上的图像形成层。 还描述了一种用于形成用于成像元件的热回火的明胶底层载体的方法,包括在聚酯聚合物膜上涂布包含明胶和至少三个羟基的多羟基有机化合物的底层,并将其 涂膜以进行热处理以降低聚合物膜的卷绕卷曲趋势。 根据本发明的优选实施方案,聚合物膜包括聚萘二甲酸乙二醇酯,多羟基有机化合物包含甘油,山梨糖醇或季戊四醇,并且热处理包括使明胶底层涂布的载体经受从 50℃至聚合物膜的玻璃化转变温度为0.1〜1500小时。