Textile compression materials

Textile-based compression materials include elastic bandages, stockings, and garments that are designed to exert external pressure to the human body. The main product performance is the force-elongation behavior, which is related to the fabric structure, yam composition, and fiber type. For elastic compression materials. 

Resilience of textile fabrics when compressed in the bent state is related to wrinkle resistance and retention of shape, drape, and hand. Resilience is an important parameter for evaluating blankets, wearing apparel in which warmth is a factor, pUe fabrics including carpets, and bulk fiber utilization in mattresses, cushions, etc. The general method for determining compressional resilience is to compress and unload the material cycHcahy, creating a plot of compressive force versus fabric thickness. 

Grease Retention, Wrinkle Resistance, and Durable Press. On bending or creasing of a textile material, the external portion of each filament in the yam is placed under tension, and the internal portion is placed in compression. Thus, the wrinMe-recovery properties must be governed in part by the inherent, tensional elastic deformation and recovery properties of the fibers. In addition to the inherent fiber properties, the yam and fabric geometry must be considered. 

The textile fibers have a limited range of application. They may be used with hot or cold water, steam, oils and ammonia up to a maximum temperature of 100°C (212°F). Asbestos fiber is more versatile, can be used as compression packing material with hot water, super-heated steam, hot oils and gases up to 310°C (590°F). 

The application of flexible sheet material to the surface of mandrels, called roll covering, is used in a variety of industries that include printing, paper, textiles, steel, office machinery, plastic fabricating lines, and many others (Figure 9.4). Their use includes to compress, drive, emboss, convey, protect, dye, suction, treat, pickle, paint, and print. 

The measurement of compressive properties of plastics is covered by ISO 604 [44]. Unlike with the tensile test a single document is able to cover a wide range of materials, since test geometries and other conditions tend to be less variable between types of plastic than is the case for tensile testing. Nevertheless, there arc types of materials that the standard does not purport to cover, and these include textile reinforced plastics, cellular materials, and sandwich constructions involving cellular materials. 

Meyer et al. (2006) developed a three-layer structure capacitance sensor consisting of two conductive textile layers sandwiching a compressible spacer material (foam or textile) for motion and muscle activity detection. As the body moves, pressure is applied to the capacitance sensor, more specifically onto the spacer layer, and capacitance changes accordingly. The sensors were shown to be able to detect arm movement when placed on the biceps and triceps. 

Sensoria Heapsylon EEC Socks Bra, compression shirt Step counting, speed, calories, altitude and distance tracking, cadence, foot landing technique and weight distribution Heart rate Electronic device magnetically snaps at sock cuff textile sensors integrated in socks electrically conductive materials (Heapsylon, 2014) Electronic device snaps onto garment at chest electrodes need to be moistened before use electrically conductive materials (Heapsylon EEC, 2014)... 

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