Development of Improved Fiber and Web Charateristics in Selected Critical Nonwoven Technologies

9815568 Batra该项目是在北卡罗来纳州立大学非织造布合作研究中心(NCRC)的领导下，作为NSF研究中心-小企业合作研发倡议的一部分进行的。国家自然科学基金委员会是国家自然科学基金的S/国际研究开发中心，本研究旨在与小企业开展合作研究项目。NCRC的一个正式成员和一个附属机构已经与调查人员一起开展了两个独立的项目。其中一个项目(Goulston Technologies，Inc.)旨在了解纺丝油剂应用于纤维的基本机理及其最终的纤维分布。由于短纤维在没有合适的纺丝整理剂的情况下不能加工成织物，这是一个非常关键的问题，对该行业的经济有重大影响。另一个项目涉及熔喷，这是一种快速增长的技术，用于制造各种非织造布。这里的研究(Blax FiberFilm，Inc.)寻求优化熔喷模具的设计，能够在高产量(低能源成本)的情况下，以选定的细度以最小的直径变化生产一系列从细到细的纤维。这种模具有可能使熔喷结构在最终织物的厚度上具有不同程度的孔隙率。这种对孔隙率分布的控制导致了用于石油和天然气过滤以及生物材料过滤/分级的高效和经济的织物。

9815568BatraThis project is carried out as a part of the NSF Research Centers -Small Firms Collaborative R&D initiative, under the leadership of the Nonwovens Cooperative Research Center (NCRC) at North Carolina State University. NCRC is a S/IUCRC established by the National Science Foundation.This study seeks to develop collaborative research projects with small businesses. A full member and an affiliate of NCRC has joined investigators to carry out two separate projects.One of them (Goulston Technologies, Inc.) seeks to understand the fundamental mechanisms involved in application of spin-finishes to fibers and its eventual distribution of the fibers. Inasmuch as staple fibers cannot be processed into fabrics without suitable spin-finishes, this is a very critical issue and has substantial impact on the economics of the industry.The other project relates to melt blowing, a fast growing technology for making a wide variety of nonwoven fabrics,. The research here (Blax Fiberfilm, Inc.) seeks to optimize the design of melt-blowing dies capable of producing a range of course-to-fine fibers with minimal diametric variations, for the selected degree of fineness, at high throughputs (low energy costs). Such dies have the potential of permitting engineering of melt-blown structures with varying levels of porosity across the thickness of the final fabric. Such control of porosity distribution leads to highly efficient and economical fabrics useful for oil and gas filtration, and filtration/fractionation of biological materials.