A Chemical-Free Deinking Method for Non-impact, Resin-Based Inks in Paper Recycling

纸张回收中非冲击树脂基油墨的无化学脱墨方法

• 批准号: 9634843
• 负责人: Melur Ramasubramanian
• 金额: $ 21万
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-09-15 至 2000-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9634843&HistoricalAwards=false
• 关键词: Chemical; Free; Deinking; Method; Non

9634843 Ramasubramani Paper and paperboard products were the largest of component accounting for about 40% of the total municipal solid waste (MSW). The primary problem in recycling of paper is the quality of recycled products, including strength and stiffness properties of paper and paperboard, which is determined by the dirt count. The primary causes of dirt count is that the xerographic and other non-impact printed inks tend to produce large ink particles which are normally too large to be removed by traditional floating and centrifugal cleaning techniques. This project investigates a novel technique to address the problem of deinking xerographic and other resin-based inks in recycled paper. This project will identify the process parameters such as the effects on incorporating acoustic coaxing induced microcavitation (ACIM) recycled fibers in the low-density paper structures through a systematic study. A prototype deinking machine with a target deinking rate of 6 pages per minute will be studied and developed for further implementation. This technique takes advantage of the nature of ACIM to release the resin bonded ink flakes from paper fibers in a completely chemical free environment, thus alleviating the problems of recyclability of non-impact printed waste and its effect on the environment. The outcome of the research project will provide valuable findings for the recycling industry.

小行星9634843 纸和纸板制品是最大的组成部分，约占城市固体废物（MSW）总量的40%。 纸回收的主要问题是回收产品的质量，包括纸和纸板的强度和刚度性能，这是由污垢计数决定的。 污垢计数的主要原因是静电印刷和其他非冲击印刷油墨倾向于产生大的油墨颗粒，这些颗粒通常太大而不能通过传统的浮动和离心清洁技术去除。 本研究旨在探讨一种新的技术，以解决再生纸中静电复印油墨和其他树脂基油墨的脱墨问题。 本项目将通过系统的研究，确定工艺参数，如将声诱导微空化（ACIM）再生纤维在低密度纸结构中的影响。 我们会研究及发展一部脱墨机器的原型，以达致每分钟6页的脱墨速度，并会进一步推行。 该技术利用ACIM的性质，在完全无化学品的环境中从纸纤维中释放树脂结合的油墨薄片，从而减轻非冲击印刷废物的可回收性及其对环境的影响的问题。 该研究项目的结果将为回收业提供有价值的研究结果。