Three-Dimensional Model Reconstruction of Nonwovens from Multi-Focus Images

The three-dimensional(3D)model is of great significance to analyze the performance of nonwovens.However,the existing modelling methods could not reconstruct the 3D structure of nonwovens at low cost.A new method based on deep learning was proposed to reconstruct 3D models of nonwovens from multi-focus images.A convolutional neural network was trained to extract clear fibers from sequence images.Image processing algorithms were used to obtain the radius,the central axis,and depth information of fibers from the extraction results.Based on this information,3D models were built in 3D space.Furthermore,self-developed algorithms optimized the central axis and depth of fibers,which made fibers more realistic and continuous.The method with lower cost could reconstruct 3D models of nonwovens conveniently.

An Overview of 3D Thin Shell Textile Preforms

The automobiles, aircraft, and lightweight industries continuously demand thin near-net-shape preforms just out-of-machine as close to the final shape. This study addresses the possibilities of 3D thin shell textile preform as the solution of lightweight reinforcement in various applications. Investigation into the development of 3D thin shells has led to different manufacturing processes. However, 3D thin shell preforms are mostly made by weaving and knitting, but nonwoven, winding, and/or layup techniques have been reported for over a decade. Owing to the complex thin shell manufacturing processes, they are not similar to the conventional methods. The different 3D thin shell preforms can extend the opportunities for new applications in various technical fields. This study presents existing research gaps and a few potential issues to be solved regarding 3D thin shell preforms in the near future.

An Overview of 3D Thin Shell Textile Preforms

The automobiles, aircraft, and lightweight industries continuously demand thin near-net-shape preforms just out-of-machine as close to the final shape. This study addresses the possibilities of 3D thin shell textile preform as the solution of lightweight reinforcement in various applications. Investigation into the development of 3D thin shells has led to different manufacturing processes. However, 3D thin shell preforms are mostly made by weaving and knitting, but nonwoven, winding, and/or layup techniques have been reported for over a decade. Owing to the complex thin shell manufacturing processes, they are not similar to the conventional methods. The different 3D thin shell preforms can extend the opportunities for new applications in various technical fields. This study presents existing research gaps and a few potential issues to be solved regarding 3D thin shell preforms in the near future.

Green Fabrication of Multifunctional Three‑Dimensional Superabsorbent Nonwovens with Thermo‑Bonding Fibers

Disposable hygiene products have evolved into the important parts for millions of people around the world,enhancing the convenience of daily lives.However,development of the disposable hygiene products is restricted by unsustainable production technology,complicated operation process,and poor liquid absorption performance of the absorbent core.Herein,integrated and three-dimensional(3D)multifunctional superabsorbent nonwovens with liquid-triggered fragrance release was prepared via green,fast and scalable multi efect hot-air anchoring method which physically crosslinking the joint thermobonding fbers and anchoring fragrance microcapsules/super absorbent polymer(SAP)onto adjacent thermo-bonding fbers simultaneously.The resulting composite nonwovens could three-dimensionally absorb water 33.14 times of its own weight without gel blockage between SAP,and correspondingly release increased intensity fragrance along with enhancing amount of water absorption.Absorption rate t1 and t2 is 83.62%and 50.62%higher than the commercial specimen respectively,and the air permeability is increased by 226.88%compared with the commercial specimen.The superabsorbent nonwovens with controllable fragrance release and odorant synergistic has the potential to be practically applied to functional textiles felds because of the excellent liquid absorption and controlled fragrance release performance,and is easy to be produced on a sustainable,pollution-free and large-scale industrial production.