High-density woven fabric

Toraysee (Fig. 19) is on the other hand a high density woven fabric with ultra-fine fibers, which possesses pores containing micro-pockets (see Fig. 20). These micro-pockets absorb dust or oil, and functions as a highly-efficient wiping cloth. Its high-density surface is also suited for printing. This particular example of Fig. 21 shows the Tokyo map printed on Toraysee, and you will see how fine it is. This printing capability may add an intellectual pleasure to the physical function. 

High-density woven fabrics H< Medium to high Ventile is expensive, waterproofness low... 

When used in flreflghters clothing, it was found that a woven Zirpro wool fabric of high density over a bulky knitted Zirpro wool underwear fabric offered signiflcantly better protection than a single layer of a woven or knitted fabric or a double layer of a woven fabric of the same total weight. 

Although woven fabrics can be impregnated and coated in bitumen to give a bituminous geomembrane (BGM), the geomembranes widely used as impervious sheets are largely made from high-, medium-, and low-density polyethylene (HDPE, MDPE, LDPE), but PP, ethylene propylene diene monomer (EPDM) and PVC are used as alternatives for some applications. 

Currently most of the 3D woven fabrics are made by conventional looms. With the inves-tigarimi of purpose-made 3D weaving loom, it might be possible to manufacture more complicated 3D preforms and their composites. By the use of the high-performance and low-volume-density filaments, it would be possible to develop various complexshaped composites with high perfomiance but low weight, which may be suitable for the automotive and aerospace industries. Changes may occur in the supply chain. 

Another model eonsidered the fabrie to be substituted by an equivalent perforated sheet which effectively was a solid equivalent polymer sheet as the previous case, but this time covering a fraction of area of the electrode plates. The authors argued that this fraction could be approximated by the fractional cover of the fabric. The results indicated slight improvement for the second model over the first one for tests carried out with plain woven fabrics made from high density polypropylene monofilaments [8]. Hearle also reported similar models and applied them to calculate the permittivity and loss factor of fiber materials from capacitance measurements of yams using a pair of specially designed conical electrode plates [9-10]. 

Studies on the woven fabrics using plain weaves made from high density polypropylene monofilaments were carried out using ASTM D150 standard method [46]. Four fabrics were used, each of which had different filament diameter, yam spacing, thickness and areal mass density. Each of these fabrics was kept between the capacitor plates and the corresponding volume fraction was calculated from the fabric areal density, density of the fiber and the electrode gap. The effective permittivity of the capacitor system with the fabric was calculated from the recorded capacitance value and the over-all capacitor dimensions using... 

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