Can sound-insulation sponges be directly pasted on the wall? They can be directly pasted, but attention should be paid to the construction method and base layer treatment. The wall surface must be kept dry, flat and free of loose dust, otherwise the adhesive cannot adhere firmly and the sponge is prone to falling off. It is recommended to use environment-friendly special glue or double-sided adhesive tape for spot pasting or strip pasting, instead of applying glue on the entire surface, so as to avoid difficulty in cleaning when replacing the sponge in the later period. For large-area installation, it is recommended to first install a wooden keel or light steel keel frame, then embed the sponge into the frame, and finally cover it with sound-absorbing fabric or decorative panel, which is both aesthetically pleasing and convenient for later maintenance. When directly pasted with the sponge surface exposed, it is easy to accumulate dust and...

Tightening Environmental Regulations Drive Comprehensive Upgrading of the Material System In recent years, with the continuous upgrading of in-vehicle air quality standards and safety regulations for infant products, the toddler seat sponge industry is undergoing a profound material transformation. The oil-based adhesive lamination process that was widely used in the past is being phased out at an accelerated pace due to its high VOC (Volatile Organic Compounds) emission and strong odor. It is being replaced by environmentally friendly processes such as PUR hot-melt adhesive lamination and flame adhesive-free lamination, which can greatly reduce the residual harmful substances such as formaldehyde and benzene series in sponges. At the same time, low odor, low VOC and DMF-free (Dimethylformamide) have become the industry...

Although automotive interior sponges and seat sponges both fall under the category of automotive polyurethane sponges, there are significant differences in their functional positioning, performance requirements, application scenarios and testing standards. A detailed comparison is made from five dimensions as follows: Different Functional Positionings The core function of seat sponges is to bear the weight of the human body, provide riding comfort, and assist in absorbing impact energy during collisions to protect the safety of occupants. They need to have good support performance, resilience and durability, which are directly related to the driving and riding experience. Automotive interior sponges are mainly used in non-load-bearing parts such as instrument panels, door panels, armrest boxes, ceilings and sun visors, with their core functions being filling...

Is It True That the Higher the "Density" Parameter of High-Density Sponges, the Better? Many people fall into the misconception that "the higher the density, the better" when purchasing industrial sponges. In fact, density is only one of the reference indicators, and it needs to be judged in combination with the rebound rate and hardness. For example, for sponges used in precision instrument packaging, excessively high density will make the sponge too hard to fully absorb the vibration and impact force during transportation, which fails to provide protection instead; while sponges used for heavy equipment buffering require sufficiently high density to support the weight and avoid permanent collapse after long-term compression. Different scenarios need to be matched with corresponding density ranges, and blind pursuit of high density will instead cause...

How to Judge the Quality of Sound-Insulation Sponges? The judgment can be made from the following aspects: First, check the appearance. High-quality sponges have a flat surface, uniform color, and no obvious color difference or impurities. Second, feel the texture. High-quality sponges are soft and elastic, and can rebound quickly after being pressed. Inferior sponges feel too hard or overly loose, with slow rebound. Third, smell the odor. High-quality sponges have no obvious pungent smell, while inferior sponges usually have a strong chemical odor. Fourth, check the test reports. Formal products shall provide the sound absorption coefficient test report and environmental protection test report. A higher sound absorption coefficient indicates better sound absorption performance. In addition, you can test the flame retardancy with a lighter...