With the improvement of people's living standards, more and more people pay attention to the quality of air and water. Air conditioners, water purifiers, air purifiers, car air purifiers, etc, hot melt glue types are increasingly used in people's lives. Hot melt adhesives are also widely used in filters. Filters are mainly divided into air filters and oil filters. Hot melt adhesives are mainly used in air filters. According to air filter adhesive material, it can be divided into EVA based hot melt adhesive and polyolefin hot melt adhesive. EVA hot melt adhesive is relatively cheap and economical. Although PO hot-melt adhesive is slightly more expensive, it has good bonding strength and anti-yellowing resistance and is deeply loved by high-end customers. The hot melt adhesive glue used in the process is mainly in three aspects: the folding and shaping of the filter paper, the bonding of the filter frame and the filter paper, and the frame-filling and sealing.
There are two main factors affecting the product performance of air filters: one is the fluidity and the other is the bonding strength of the two-component polyurethane potting adhesive, which are also two very key factors in the quality assessment of air filter adhesive. Fluidity is mainly determined by viscosity, the smaller the viscosity, the better the fluidity, the larger the viscosity, the worse the fluidity. The bonding strength of the air filter adhesive refers to how much force is needed to separate the filter paper from the aluminium, so naturally the greater the bonding strength of the filter, the better the quality of the product.
For air filter laminates, the hot melt film is generally thinner, e.g. 8g, 10g, 12g, 15g, 20g, etc. If high temperature resistance is required then polyamide based hot melt adhesives is chosen, if high temperature resistance is not required then eva adhesive glue can also be chosen.
Air filter adhesive has the characteristics of high adhesive strength, good flowability, fast curing speed, no irritating smell, stable glue performance, anti-aging and excellent water resistance. It is suitable for bonding, filling and sealing between metal materials such as rhetoric plates, aluminium plates and non-woven fabrics, filter paper, etc.
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