公开(公告)号：US06274203B1

公开(公告)日：2001-08-14

申请号：US09284979

申请日：1999-05-10

申请人： Hiroshi Kawaguchi ,  Toshiki Igarashi

发明人： Hiroshi Kawaguchi ,  Toshiki Igarashi

IPC分类号： C08F222

CPC分类号： D06N3/0081 ,  D06N3/0077 ,  D06N3/14

摘要： Artificial leather can be produced, without using any organic solvent, by coating or impregnating a fibrous base material to be formed into artificial leather with a polymer solution in the form of an aqueous emulsion, in which the polymer exhibits elasticity when it is solidified and adhered to the base material; and then solidifying and adhering or fixed, in the fibrous base material, the polymer solution contained in the base material using a combination of wet heat (using the heat of water vapor) and microwave heating. Therefore, the method is not harmful to the environment and permits the reduction of the degree of migration as compared with the conventional methods in which the solidification and adhesion or fixation are performed by dry heating while making use of hot air. The method also permits the formation of a product having clear voids (contact-free portions) formed between fibers in the fibrous base material and the impregnated polymer, the voids being indispensable to the handling or feeling of the artificial leather. The resulting product further has gas permeability due to the presence of numerous very fine pores formed by the release of water vapor generated during the solidification and adhesion or fixation of the polymer. There is also observed the presence of porous structures in the polymer solidified and adhered or fixed within the fibrous base material. In addition, the method permits the elimination of the shrinking step which is essential for the conventional processing steps and this correspondingly allows the simplification of the production process. Moreover, the method of the invention permits the reduction of the processing time and the improvement of the production efficiency.

摘要翻译： 人造革可以在不使用任何有机溶剂的情况下通过用水乳液形式的聚合物溶液涂覆或浸渍成人造革来制造，其中聚合物在固化和粘附时呈现弹性 到基材; 然后使用湿热（使用水蒸汽的热）和微波加热的组合，在纤维基材中固化和粘合或固定包含在基材中的聚合物溶液。 因此，与使用热空气通过干燥加热进行凝固和粘合或固定的常规方法相比，该方法对环境无害并且允许降低迁移度。 该方法还允许形成在纤维基材中的纤维和浸渍的聚合物之间形成的具有透明空隙（无接触部分）的产品，空隙对于人造革的处理或感觉是必不可少的。 所得到的产物由于存在许多非常细小的孔而进一步具有气体渗透性，这些孔通过在固化和粘合或固定聚合物期间产生的水蒸汽的释放而形成。 还观察到聚合物中存在多孔结构体，固化并粘附或固定在纤维基材内。 此外，该方法允许消除对于常规加工步骤是必需的收缩步骤，并且这相应地允许简化生产过程。 此外，本发明的方法允许减少处理时间并提高生产效率。