In sectors such as construction, automotive, household appliances and rail transport, the choice of noise-reduction materials directly determines the quietness of a space, construction efficiency and long-term operating costs. Traditional glass wool and acoustic foam were once the mainstream choices, but their shortcomings in terms of environmental friendliness, safety and durability have become increasingly apparent. Thanks to its comprehensive performance advantages, Silence Tech acoustic non-woven fabric is rapidly emerging as the benchmark choice for the next generation of noise-reduction materials. This article conducts an in-depth comparison of the three materials across five core dimensions—sound absorption, environmental friendliness and safety, ease of installation, durability and cost—to reveal the rationale behind ‘Mijing’ non-woven fabric’s leading position.
Glass wool: It offers acceptable sound absorption at medium and high frequencies (NRC approximately 0.5–0.7), but its low-frequency sound absorption is poor; it relies on perforated panels and cavity structures, and is prone to localised failure in complex environments; furthermore, the fibres tend to shed and block the perforations, leading to a decline in sound absorption efficiency over time.
Silence Tech acoustic nonwoven：Utilising a two-component organic and inorganic fibre wet-moulding process, the fibres are evenly interwoven to form a dense and interconnected three-dimensional microporous structure, achieving highly efficient sound absorption across the entire frequency range (NRC 0.6–0.95); Without the need for complex cavities, the material is effective when applied directly to the substrate, providing stable noise reduction in settings such as airports, underground stations, meeting rooms and automotive interiors; field tests have shown it can reduce reverberation time by 30–50 per cent.
Glass wool: The key concern is fibre dust pollution. During installation and cutting, fibres become airborne, irritating the skin and respiratory tract; prolonged exposure can lead to respiratory diseases. Standard glass wool contains formaldehyde-based adhesives, which continuously release harmful gases; it is difficult to degrade once discarded, posing significant environmental risks.
Sound-absorbing foam: Most is made of polyurethane, which is prone to releasing toxic gases at high temperatures and has a low fire resistance rating (primarily Class B); when exposed to fire, it produces dense, highly toxic smoke. Furthermore, it is prone to ageing and crumbling, leading to microplastic pollution, and does not comply with green building standards.。
Silence Tech acoustic nonwoven：SGS+HJ 2546-2016 dual environmental certification: formaldehyde-free, low VOC, and recyclable; free from fibre dust, requiring no protective measures throughout production, installation and use; safe for contact by vulnerable groups such as the elderly, children and pregnant women; meets Class A2 fire safety standards, is non-combustible when exposed to fire and emits no toxic fumes, and complies with the stringent safety requirements of the construction and transport sectors.
Glass wool: It has a loose texture and breaks easily; full protective gear (masks, gloves, protective clothing) is required during installation; it can only be applied to flat surfaces and is unsuitable for curved or irregularly shaped structures; after installation, it is prone to sagging and clumping, requiring frequent maintenance and resulting in high labour costs.
Sound-absorbing foam: Soft in texture but prone to deformation; cutting precision is poor, making it unsuitable for standardised bulk installation; it requires additional adhesive to secure it in place and is prone to coming loose, making it unsuitable for large-scale projects.
Silence Tech acoustic nonwoven：Lightweight, flexible and pliable, it can be freely cut, die-cut and slit; the self-adhesive version can be applied directly, requiring no protective measures during installation, and large-area installations can be completed in half a day; it adheres perfectly to curved surfaces, irregularly shaped panels and the reverse side of perforated plasterboard, boosting installation efficiency by over 50 per cent.
Glass wool: Prone to moisture absorption, clumping and fibre shedding; its sound-absorption efficiency declines significantly within 3–5 years; cleaning it later can lead to secondary contamination, and maintenance costs are extremely high.
Sound-absorbing foam: Poor weather resistance; it ages, yellows and crumbles within 1–2 years when exposed to direct sunlight or high temperatures, requiring frequent replacement and resulting in high long-term costs.。
Silence Tech acoustic nonwoven：The wet-forming process ensures that organic and inorganic fibres are tightly bonded, resulting in high tensile strength, moisture resistance and resistance to ageing; the structure remains stable without flaking or caking, and retains over 90 per cent of its sound absorption efficiency for more than 10 years; it requires no maintenance and does not clog perforated panels, significantly reducing life-cycle costs.
Glass wool: Although the unit price is low, the costs associated with protective measures during installation, labour, subsequent maintenance and replacement are high; consequently, the total life-cycle cost far exceeds the initial price.
Sound-absorbing foam: The unit price is moderate, but it is not very durable and needs to be replaced frequently, resulting in high long-term overall costs.
Silence Tech acoustic nonwoven：Although the unit price is slightly higher than that of standard glass wool, it requires no protective measures or maintenance during installation and has a 10-year replacement-free lifespan, resulting in an overall cost that is 30–40 per cent lower than that of traditional materials; furthermore, its environmental and safety attributes can enhance a project’s value, aligning with current trends in material selection for green buildings and high-end manufacturing.
Silence Tech acoustic nonwoven utilises a wet-forming process combining organic and inorganic fibres, perfectly blending the flexibility of organic fibres with the stability and high-temperature resistance of inorganic fibres. Through wet dispersion, forming and curing, the fibres are distributed more evenly and the structure is denser; when sound waves enter, the fibres’ friction and air damping efficiently convert sound energy into heat, achieving stable sound absorption across the entire frequency range. Compared with traditional needle-punching processes, wet-formed non-woven fabrics feature more uniform micro-pores, higher sound absorption efficiency and superior weather resistance, thereby completely overcoming the performance shortcomings of traditional materials.
Silence Tech acoustic nonwoven has obtained numerous authoritative certifications, including SGS environmental testing, HJ 2546-2016 low-VOC certification and Class A2 fire resistance testing. It has been used in flagship projects such as major domestic airports, new energy vehicle manufacturers and Grade A office buildings, where its noise-reduction performance, as demonstrated in field tests, has been unanimously recognised by clients, establishing it as a benchmark for quality in the field of acoustic materials.
As green building, carbon neutrality and high-end manufacturing become the mainstream in the industry, the shortcomings of traditional noise-reduction materials in terms of environmental friendliness and safety can no longer meet market demands. Silence Tech’s sound-absorbing non-woven fabric, with its all-round superior performance—combining ‘high-efficiency sound absorption, environmental friendliness and safety, ease of installation and long-term durability’—is perfectly aligned with current trends in material selection:
For contractors: reduce costs and improve efficiency, shorten construction times, minimise maintenance and enhance the project’s competitiveness.
For property owners: Safe and environmentally friendly, with no dust or formaldehyde, creating a healthy and peaceful space.
For manufacturers: weight reduction, standardisation, suitability for automated production, and improved product quality.
From glass wool to foam, and on to Silence Tech’s sound-absorbing non-woven fabric, the evolution of noise-reduction materials essentially represents a comprehensive upgrade in performance, environmental sustainability and cost-effectiveness. Leveraging the core advantages of its dual-component organic and inorganic fibre wet-forming technology, Silence Tech’s non-woven fabric delivers superior performance across the board, thoroughly addressing the shortcomings of traditional materials and establishing itself as the leading next-generation noise-reduction material in sectors such as construction, transport and household appliances. Choosing Silence Tech means opting for a highly efficient, safe, environmentally friendly and long-lasting noise-reduction solution, helping every space achieve true tranquillity.
