Methods and systems for processing mixed textile feedstock, isolating constituent molecules, and regenerating cellulosic and polyester fibers
申请人:EVRNU, SPC
公开号:US11034817B2
公开(公告)日:2021-06-15
Methods and systems of the present invention use mixed textile feedstock, which may include post-consumer waste garments, scrap fabric and/or other textile materials as a raw feed material to produce isolated cellulose and other isolated molecules having desirable properties that can be used and be used in the textile and apparel industries, and in other industries. A multi-stage process is provided, in which mixed textile feed material is subjected to one or more pretreatment stages, followed by at least two pulping treatments for isolating cellulose molecules and other molecular constituents, such as polyester. The isolated cellulose and polyester molecules may be used in a variety of downstream applications. In one application, isolated cellulose and polyester molecules are extruded to provide regenerated cellulose fibers and regenerated polyester fibers having desirable (and selectable) properties that are usable in various industrial applications, including textile production.
本发明的方法和系统使用混合纺织原料,其中可包括消费后的废服装、废织物和/或其他纺织材料,作为原料生产分离纤维素和其他具有理想特性的分离分子,可用于纺织和服装行业以及其他行业。本发明提供了一种多阶段工艺,其中混合纺织原料经过一个或多个预处理阶段,然后进行至少两次打浆处理,以分离纤维素分子和其他分子成分(如聚酯)。分离出的纤维素和聚酯分子可用于各种下游应用。在一种应用中,分离出的纤维素和聚酯分子被挤出,以提供再生纤维素纤维和再生聚酯纤维,这些纤维具有理想的(可选择的)特性,可用于各种工业应用,包括纺织品生产。