Abstract
In this study, sound absorption coefficients (SACs) of needle-punched and thermal-bonded nonwovens produced from polyester (PET) fibers with various cross sections, i.e., hollow, round and hexaflower, blended with a low melt PET, was reported. The acoustic performance of a hexaflower PET fiber was studied for the first time. Fibers were carded and then one set of samples was bonded by needle punching while the other set was air-through thermal bonded. A third set of samples was needled at various punch densities. Design of experiments was planned according to Taguchi method. Relationship between production parameters and SAC was analyzed using Minitab software. The most important independent variables affecting the sound absorption were areal density and web bonding method. The sample produced according to optimum production levels reached to a SAC value of 0.57 at 2000 Hz which could be a suitable choice for acoustic applications in the automotive industry.
Original language | English |
---|---|
Pages (from-to) | 575-585 |
Number of pages | 11 |
Journal | Journal of the Textile Institute |
Volume | 111 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2 Apr 2020 |
Bibliographical note
Publisher Copyright:© 2019, © 2019 The Textile Institute.
Funding
Authors acknowledge Istanbul Technical University Scientific Research Projects Fund under Grant No. BAP 40892 for the financial support, Prof. Dr. Mustafa Köseoglu Textile Based Composites Advanced Technology and Innovation Center at ITU for the use of lab facilities, Hassan Tekstil, Turkey for the production of nonwoven samples and Huvis, South Korea for the supply of raw materials.
Funders | Funder number |
---|---|
Istanbul Technical University Scientific Research Projects Fund | BAP 40892 |
International Technological University |
Keywords
- Cross section
- PET fiber
- Taguchi
- nonwoven
- sound absorption
- web bonding