2015年10月11日星期日

Fiberglass Weaving Fabric

Our Fiberglass weaving fabric including E-glass Chopped strand mat, fiberglass woven roving, fiberglass stitched mat, combo mat etc.

Fiberglass Mats are nonwoven fabrics made from fibers that are held together by a chemical binder. They come in two distinct forms: chopped and continuous strand. Chopped strand mats contain randomly distributed fibers cut to lengths that typically range from 38 mm to 63.5 mm. Continuous-strand mat is formed from swirls of continuous fiber strands. Because their fibers are randomly oriented, mats are isotropic — they possess equal strength in all directions. Chopped-strand mats provide low-cost reinforcement primarily in hand layup, continuous laminating and some closed molding applications. Inherently stronger continuous-strand mat is used primarily in compression molding, resin transfer molding and pultrusion applications and in the fabrication of preforms and stampable thermoplastics. Certain continuous-strand mats used for pultrusion and needled mats used for sheet molding eliminate the need for creel storage and chopping.

Woven fabrics are made on looms in a variety of weights, weaves and widths. Wovens are bidirectional, providing good strength in the directions of yarn or roving axial orientation (0º/90º), and they facilitate fast composite fabrication. However, the tensile strength of woven fabrics is compromised to some degree because fibers are crimped as they pass over and under one another during the weaving process. Under tensile loading, these fibers tend to straighten, causing stress within the matrix system.

Several different types of weaving are used for bidirectional fabrics. In aplain weave, each fill yarn (i.e., yarn oriented at right angles to the fabric length) alternately crosses over and under each warp yarn (the lengthwise yarn). Other weaves, such as harness, satin and basketweave, allow the yarn or roving to cross over and under multiple warp fibers (e.g., over two, under two). These weaves tend to be more drapable than plain weaves.

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