Mechanics of tissue making: modelling and experiments

低密度纸巾和毛巾纸产品的生产和消费已有数十年的历史。然而，目前对组织制造科学的理解还处于萌芽状态。全球对纸巾产品不断增长的需求，特别是在不断扩大的亚洲和南美市场，刺激了这一制造业领域的竞争和技术的经验发展。从艰苦且往往昂贵的实证研究中涌现出来的专有技术受到制造商的严密保护，以在加拿大和世界范围内这一不断增长的造纸业领域保持竞争优势。这项提议建立在UBC研究人员与行业合作伙伴之间于2015年建立的合作伙伴关系的基础上：克鲁格产品公司(北美领先的纸巾生产商)、FP Innovation(加拿大林业部门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)。这些合作伙伴的知识和专业知识的结合将确保这种合作的结果具有影响力并与工业实践相关。我们寻求为制造过程开发基本的力学模型，测量和量化该过程赋予纸巾的皱纹结构，以及最终对纸巾产品的宏观性能的影响，如拉伸强度、弹性、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，以全面了解与褶皱相关的组织制作过程。该项目目标的成功实现将推动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.