Polymers Textiles

Applications of Nonwovens in Technical Textiles (Woodhead by R Chapman

By R Chapman

One of many quickest starting to be and most fun sectors of the textiles marketplace, nonwovens supply a vast spectrum of finish makes use of, starting from scientific items to inside textiles. This publication specializes in the diversity of technical nonwoven functions to be had. half one examines the fundamental ideas of nonwoven materials, and comprises themes corresponding to the formation of nonwovens and the impression of fibre and upholstery homes on nonwoven functionality. half offers necessary examples of the way nonwoven fabrics can be utilized in a number of cloth items for attire, filtration, and private hygiene. With its selection of overseas individuals, this book provides a big reference for pros and lecturers serious about the construction, expertise, and use of nonwoven fabrics, extending from the scientific fabric to the attire region.  

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Extra info for Applications of Nonwovens in Technical Textiles (Woodhead Publishing Series in Textiles)

Example text

3] where ρoil is the oil mass density and ρweb is the web mass density. For example, a 10 gram absorbent web with a packing density of 5% can hold 190 grams of oil, assuming that the oil and the polymer have the same mass density. 1 Velocity profile of a fluid flow in a channel. permeability. Packing density is also a factor in controlling air filtration efficiency, as will be described in later sections. 3 Experimentally calculated pore size of nonwovens Pore size is an important factor in liquid filtration because sieving is an important liquid filtration mechanism.

13 Slow and steady increase of pressure drop by DOP loading on meltblown electrets. 17 For some nonwovens, such as needle-punched and hydroentangled, there are fibers in the z-direction that act as the bonding strength. 57, because the assumptions for micro-mechanical fibrous theory, as described in the next paragraph, hold true for the above two nonwovens. 57] where: C11 is the stiffness constant in the x-direction on the plane perpendicular to the xaxis C12 is the stiffness constant in the y-direction on the plane perpendicular to the xaxis, etc.

11 Mechanical properties, such as mechanical strength, are important factors for all applications since weak nonwovens are of no use. Nonwovens are composed of © Woodhead Publishing Limited, 2010 20 Applications of nonwovens in technical textiles fibers and their strength is obtained from the fiber strength and the bonding strength among the fibers. Types of bonding include thermal, chemical, hydroentangling, and needle-punching, etc. Unusually, the bonding of a meltblown fabric is obtained from self-entangling and the friction force among its microfibers.

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