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Öğe Acoustical absorptive properties of spunbonded nonwovens made from islands-in-the-sea bicomponent filaments(Taylor and Francis Ltd., 2013) Suvari, Fatih; Ulcay, Yusuf; Maze, Benoit; Pourdeyhimi, BehnamIn this paper, we report on the acoustical absorptive behavior of spunbonded nonwovens that contain bicomponent islands-in-the-sea filaments. Nylon 6 (PA6) and polyethylene were used as the islands and the sea polymers, respectively. Spunbonded webs made with islands-in-the-sea bicomponent filaments with island counts of 1, 7, 19, 37, and 108 were produced at the Nonwovens Institute's pilot facilities at NC State University. The filaments were fibrillated by hydroentangling, where high-speed water jets were used to fibrillate the fiber and free' the islands. The influence of the number of islands on acoustical absorptive behavior of the spunbonded nonwovens was investigated. A comparison of acoustical absorptive properties of multi-layer islands-in-the-sea nonwoven and high loft nonwoven was also performed to evaluate the potential use of spunbonded nonwovens made from islands-in-the-sea bicomponent filaments in place of bulky fibrous sound absorbers. Results have shown that multi-layer 108 nonwoven islands were better acoustic absorbers at nearly half of the frequency range. Spunbonded nonwovens made from islands-in-the-sea bicomponent filaments can be a good alternative in applications where there is desire to replace bulky fibrous sound absorbers.Öğe Reducing noise level in vehicles by spunbonded nonwovens made from bicomponent filaments(Fiber Society, 2013) Suvari, Fatih; Ulcay, Yusuf; Maze, Benoit; Pourdeyhimi, BehnamReducing noise level in vehicles by spunbonded nonwovens made from bicomponent filamentsÖğe Sound absorptive nonwovens for indoor structures(Fiber Society, 2012) Suvari, Fatih; Ulcay, Yusuf; Pourdeyhimi, BehnamSound absorptive nonwovens for indoor structures
