Mechanics of tissue making: modelling and experiments

低密度卫生纸和纸巾产品已经生产和消费了几十年。然而，目前对组织制造科学的理解还处于初级阶段。全球对纸巾产品的需求不断增长，特别是在亚洲和南美洲不断扩大的市场，刺激了这一制造部门的竞争和技术的经验发展。专利技术从艰苦的，往往是昂贵的，经验性的研究是由制造商密切保护，以保持竞争优势，在这个不断增长的部门造纸工业在加拿大和世界范围内。该提案建立在UBC研究人员与工业合作伙伴之间于2015年建立的合作伙伴关系的基础上：Kruger products inc.（北美领先的纸巾生产商），FPInnovations（加拿大林业和生物产品研究和创新的旗舰组织），Solenis（纸巾生产中使用的化学品的领先供应商）。这些合作伙伴的综合知识和专业知识将确保此次合作的成果具有影响力并与工业实践相关。我们试图为制造过程开发基本的力学模型，测量和量化该过程赋予组织的绉纹结构，以及最终对组织产品宏观性能的影响，如抗拉强度、模量、柔软度和拉伸。同时，将进行实验室规模和工业规模过程的实验研究，以推动建模过程。分析和数值模拟的结合将与关键的实验研究相结合，以获得与起皱相关的组织制造过程的全面理解。该项目目标的成功实现将刺激加拿大纸巾行业的创新。

Low density tissue and towel paper products have been produced and consumed for many decades. Yet the present understanding of the science of tissue making is nascent. The globally growing demand for tissue products, particularly in expanding markets in Asia and South America, has spurred competition and empirical development of technologies in this manufacturing sector. Proprietary technologies emerging from the painstaking, and often costly, empirical studies are closely guarded by the manufacturers to retain competitive advantage in this growing sector of paper industry in Canada and worldwide.This proposal builds on a collaborative partnership has been established in 2015 between UBC researchers and industrial partners: Kruger products inc. (leading tissue producer in North America,) FPInnovations (the flagship Canadian organization for research and innovation in forest sector and bio products,) Solenis (a leading supplier of chemicals used in tissue production). The combined knowledge and expertise of these partners will ensure that the outcomes of this collaboration are impactful and relevant to industrial practice.We seek to develop fundamental mechanics models for the manufacturing process, measure and quantify the crepe structure this process imparts to a tissue, and the eventual impact on macroscopic properties of a tissue product, such as tensile strength, modulus, softness and stretch. Concurrently, experimental studies on lab scale and industrial scale processes will be undertaken to drive the modelling process. A combination of analytical and numerical modelling will be combined with critical experimental studies to gain a comprehensive understanding of the tissue making processes relevant to creping. Successful realization of the goals of this project will spur innovations in tissue industry in Canada.