Sound Absorption Test: Shalom50 Acoustic Wool and Shalom75 Acoustic Wool

In February 2023, the Institute for Development & Application of Acoustic Materials (DASM) performed a sound absorption test (ASTM C423-17, EN ISO 11654:1997) on the Shalom50 and Shalom75 acoustic wool products of Bong Bich Hue Manufacturing – Trading Co., Ltd.

Company and product overview 

Founded in 2005, Bong Bich Hue Manufacturing – Trading Co., Ltd. (District 12, Ho Chi Minh City) specializes in pressed cotton mattresses, rolled cotton batting, pressed cotton mattress cores, needle-punched wool, 100% polyester fiber wadding and vacuum pillows.

Shalom50 acoustic wool consists of a 50 mm acoustic wool layer and a 3 mm gray fabric layer. Test sample size: 1.2 x 2.4 m. 

Shalom75 acoustic wool consists of a 75 mm acoustic wool layer and a 3 mm gray fabric layer. Test sample size: 1.2 x 2.4 m. 

On the market, this product line is called gray needle-punched fabric-faced acoustic wool with a white core, presented as using NVF technology, 100% polyester fiber, fire-resistant and easy to install…

The sound absorption test of Shalom50 & Shalom75 acoustic wool CRW-TA 01 was performed in the Reverberation Room of the Institute for Development & Application of Acoustic Materials using the following methods:

• ASTM C423-17, Standard test method for sound absorption and sound absorption coefficients by the reverberation room method
• EN ISO 11654:1997. Acoustics — Sound absorbers for use in buildings — Rating of sound absorption

 

DASM – Transparent, Independent, Reputable and Confidential Acoustic Testing Services

Today's globalized commerce opens countless new markets and sources of supply across the five continents. Alongside it come international regulations and standards that help customers easily assess quality, trace the origin of products and select suitable or superior goods. In particular, they also support manufacturers in continuously improving and perfecting technology, techniques, raw materials, production methods, sales and more. At the same time, objective, scientific and accurate test results become the best proof of quality, enabling products and materials to be specified and used in all types of buildings, projects and work items… smoothly and in compliance with regulations.

The Institute for Development & Application of Acoustic Materials (DASM) is a pioneering, comprehensive, professional and leading reputable brand in Vietnam in the field of acoustics. On January 12, 2023, DASM was issued Certificate No. 114/TĐC – HCHQ by the Directorate for Standards, Metrology and Quality (Ministry of Science and Technology), certifying its registration for multi-disciplinary testing activities in the field of Mechanical and Physical testing (registration No. 707/TN – TĐC).

Our acoustic testing services deliver practical expert results to meet requirements for sustainability and standard performance, and to support optimal solutions, consulting and design adjustments for your products and services. In this way, you can keep up with, comply with and adapt to constantly changing international standards, achieving breakthroughs in revenue and profit and elevating your brand. At the same time, DASM is committed to transparency, independence, reputation and confidentiality in serving its customers.

Please contact the Hotline 0968018216 of the Institute for Development & Application of Acoustic Materials (DASM) for detailed consultation!

 

Yen Vu / DASM