The sound insulation performance of a linkage sliding door is closely related to the compression-rebound rate of the sealing strip. This metric directly affects the sealing performance when the door is closed, and in turn determines its ability to block airborne sound. High-quality sealing strips, through their material properties and structural design, must quickly recover after compression, filling the tiny gap between the door frame and the door leaf, forming a continuous sound barrier.
Compression-rebound rate is a key parameter in measuring the performance of a sealing strip, referring to its ability to return to its original thickness after deformation under pressure. When a linkage sliding door is closed, the sealing strip between the door leaf and the door frame is compressed. If its rebound rate is insufficient, the strip will not fully fill the gap, allowing sound waves to penetrate through the gap and reducing the sound insulation effect. Conversely, a strip with a high rebound rate quickly recovers its shape after pressure is released, maintaining a tight fit with the door frame and effectively blocking the sound transmission path.
Material selection plays a decisive role in the compression-rebound rate. Ethylene propylene diene monomer (EPDM) is the preferred material for linkage sliding door sealing strips due to its excellent aging resistance and elasticity. Compared to ordinary PVC sealing strips, EPDM sealing strips are less likely to harden or crack over long-term use and can maintain high resilience. Furthermore, silicone rubber sealing strips, with their extremely low compression set, maintain their elasticity even in extreme temperature fluctuations, further extending their service life and ensuring consistent sound insulation.
Structural design must be optimized in tandem with material properties. Sealing strips for linkage sliding doors typically utilize a multi-chamber structure, distributing pressure through internal cavities and improving rebound efficiency. For example, a three-stage sealing design can cover multiple gaps between the window frame and the wall, and between the window sash and the profile, creating a layered barrier and significantly improving sound insulation. Furthermore, the cross-sectional shape of the strip must precisely match the door frame groove to avoid installation deviations that could hinder rebound and compromise sealing performance.
The installation process is crucial to the actual compression rebound performance. The sealing strip must be evenly distributed within the T-groove provided in the door frame to avoid localized over- or under-pressure. During installation, the compression of the rubber strips should be controlled, typically to 30% to 50% of their original thickness. This ensures a tight seal without causing excessive compression that can weaken the springback. Furthermore, the flatness of the door leaf and door frame must be strictly aligned to prevent misalignment that could cause the rubber strips to bear force on one side, reducing springback uniformity.
The impact of environmental factors on the compression-rebound rate cannot be ignored. In high-temperature environments, ordinary rubber strips may soften, resulting in a decrease in springback rate. However, silicone rubber or EPDM rubber strips, due to their high-temperature resistance, maintain stable performance up to 200°C. In low-temperature environments, high-quality rubber strips will not harden even at -50°C, ensuring effective sealing during winter use. By selecting rubber strip materials suitable for different climates, the sound insulation performance of linkage sliding doors can be maintained year-round.
In actual use, the compression-rebound rate must be coordinated with other soundproofing measures. For example, the glazing of linkage sliding doors can be configured with insulating glass or laminated glass to improve overall soundproofing by increasing resistance to sound wave propagation. At the same time, the gap between the door frame and the wall needs to be filled with foam and sealed with sealant to prevent sound from seeping in through structural gaps. This multi-dimensional soundproofing design maximizes the compression and rebound properties of the sealing strips.
From material selection to structural design, installation techniques, and environmental adaptability, the compression and rebound rate of the sealing strips in linkage sliding doors requires systematic optimization. High-quality sealing strips not only enhance sound insulation but also strengthen the door's thermal insulation, dust resistance, and wind resistance, extending its lifespan. For users who pursue a high-quality lifestyle, choosing sealing strips with stable compression and rebound rates and durable materials is key to ensuring the long-term soundproofing performance of linkage sliding doors.
