Recently, Lingwo, a leading enterprise in the domestic adhesive industry, released a new generation of liquid PUR structural adhesive solution. Targeting the core needs of TWS (true wireless) headphone industry, such as structural bonding, waterproof sealing, and acoustic damping, Lingwo has launched a series of customized products, which has attracted widespread attention from the consumer electronics supply chain.
Technological breakthroughs to solve industry pain points
With the development of TWS earphones towards miniaturization and high performance, traditional epoxy resin adhesives have exposed problems such as high curing stress and difficult repair in precision bonding. The Shuangzhan R&D team has developed a liquid PUR elastic colloid with a “dynamic cross-linking network” through molecular restructuring technology. While maintaining ultra-high shear strength, it has achieved a 300% increase in deformation compensation ability under working conditions from -40 ℃ to 120 ℃. According to tests conducted by a certain head ODM manufacturer, the adhesive can increase the pass rate of headphone cavity drop tests from 82% to 97%, and reduce the production line defect rate by 40%.
Environmental certification seizes the market opportunity
Against the backdrop of the upcoming implementation of the Sustainable Products Act in the European Union, Shuangzhan liquid PUR adhesive has been certified and tested by professional institutions, with plant extracts accounting for 35% and VOCs emissions reduced by 90% compared to traditional products. We have provided halogen-free flame retardant adhesive solutions for multiple brands to assist customers in obtaining EPEAT electronic environmental registration. David, Director of Shuangzhan Electronic Adhesive Business Unit, revealed that its water-based damping adhesive can reduce headphone diaphragm harmonic distortion by 2dB while meeting the requirements of detachable maintenance design.
Ecological co construction deepens industrial synergy
At present, Shuangzhan has established joint laboratories with 12 core suppliers including acoustic components, micro motors, and FPC flexible circuits. In the field of noise cancelling headphones, the “sandwich” structural adhesive developed by the company has successfully decoupled the vibration of ANC microphones from PCB boards, achieving a new industry high of -75dB in bottom noise control..
Industry insiders point out that with the continuous penetration of new functions such as spatial audio and health monitoring, reliable bonding of microelectronic components will become a key competitive factor. Lingwo Industrial is deeply involved in product definition through material innovation and is reconstructing the value chain pattern of consumer electronics adhesives.
Extended data
The global market size of electronic adhesives is expected to reach 7.8 billion US dollars by 2025 (Grand View Research data)
The proportion of TWS headphone adhesive cost has increased from 1.2% in 2019 to 2.8% in 2023 (supply chain research)
About Lingwo Group
Lingwo has been dedicated to the research and development, production, and sales of adhesives for 12 years. Our products cover eight major series including industrial adhesives, electronic adhesives, and specialty adhesives, serving over 300 well-known enterprises worldwide. The company has obtained ISO9001 and ISO14001 system certifications.
