Textile structure based on glass fibers for acoustic ceiling or acoustic wall panel

A textile structure, comprising:

• (a) a nonwoven mat of glass fibers bound by a thermoset binder, wherein the nonwoven mat has a surface density of between 20 and 200 g/m2;
• and
• (b) a continuous acoustic layer comprising from 80% to 95% by weight of mineral particles and from 5% to 20% by weight of an elastomer and/or thermoplastic polymer binder,
• wherein the textile structure has an open porosity of greater than 3%, and a static airflow resistance, determined according to the standard ISO 9053 of between 1000 and 3000 N·s·m−3,
• wherein said continuous acoustic layer at least partially impregnates said nonwoven mat, and
• wherein either:
• a particle size distribution of the mineral particles is a unimodal distribution having a median diameter by volume D50 determined by laser particle size analysis of between 0.8 and 1.5 μm, a D10 of between 0.1 and 0.5 μm, and a D98 of between 5.5 and 6.5 μm, or
• a particle size distribution of the mineral particles is an at least bimodal distribution with a first mode located between 0.5 and 2.0 μm and a second mode located between 4 and 25 μm, and a D10 of between 0.1 and 0.5 μm.