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. 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 its material, it can be divided into EVA and PO 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 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.
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