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Meltblown nonwoven web comprising recycled polypropylene component and recycled sustainable polymer component and method of making the same

机译:包含回收的聚丙烯组分和回收的可持续聚合物组分的熔喷非织造纤维网及其制备方法

摘要

Process of preparing meltblown fibers that are reclaimed from a starting material of a polypropylene component and a sustainable polymer component is provided. In one aspect, the method includes blending starting fibers of a polypropylene component and a sustainable polymer component under heat to form a molten stream, and then vis-breaking the components to obtain a polymeric blend that is suitable for use in meltblowing applications. The molten stream of the vis-broken polymer components are extruded through a meltblowing die to form a stream of meltblown fibers that is then collected on a collection surface to form a coherent meltblown web. The starting material may be bicomponent filaments having a sheath-core configuration in which the polypropylene component is oriented in the sheath and the sustainable polymer component is oriented in the core of the filaments. The invention is also directed to meltblown fibers and webs prepared from the process.
机译:提供了一种制备由聚丙烯组分和可持续的聚合物组分的原料回收的熔喷纤维的方法。一方面,该方法包括在加热下将聚丙烯组分和可持续聚合物组分的起始纤维共混以形成熔融料流,然后将这些组分减粘以得到适用于熔喷应用的聚合物共混物。可视断裂聚合物组分的熔融流通过熔喷模头挤出以形成熔喷纤维流,然后将其收集在收集表面上以形成粘结的熔喷纤网。起始材料可以是具有皮-芯构型的双组分长丝,其中聚丙烯组分在皮中取向而可持续的聚合物组分在长丝的芯中取向。本发明还涉及由该方法制备的熔喷纤维和纤网。

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