With the increasing application of adhesives in fields such as automobiles, machinery, and construction, people are paying more and more attention to the bonding process, and have put forward stricter requirements for the adhesives used in filters. The filter adhesive should ensure airtightness, low toxicity, excellent process performance, and meet relevant ISO international standards and environmental requirements for high and low temperature resistance.

Application of 899-L1 sealant on air filters
The main component of the air filter is the air filter element, and the replaceable air filter element is mainly composed of upper and lower end covers, filter paper, ordinary rubber sealing rings and other parts. The rubber sealing ring is used to ensure the sealing and shock absorption of the air filter components. If it falls off or fails, the air filter will lose its filtering function.

2. Application of EVA hot melt adhesive on air filters
After using the new production process of EVA hot melt adhesive automatic sealing and pressing machine, the air filter seam automatic sealing and mechanical pressing synchronous bonding have been achieved. The EVA hot melt adhesive sealing temperature is set at 150-180 ℃, and the softening point is 95-120 ℃; The curing time is 10-20 seconds, and the appearance quality of the product is good. If the height of the filter element product is less than 100 mm, a glue gun can be used to manually inject hot melt adhesive strips into the joint, and manual pressing can be used, which is suitable for small batch production.

3. Application of sealant on rotary oil filters
The function of an oil filter is to control the number and size of impurities circulating in the system, improve engine efficiency and service life. When the oil filter is working, it needs to withstand an oil temperature of around 100 ℃. To ensure sealing, the nitrile rubber sealing sealant applied on the end cover has special requirements. In addition to elasticity and good sealing, it also needs to be resistant to high temperature frying. Generally, chloroprene rubber or nitrile rubber are used.

4. Application of filter cartridge adhesive on electronic fuel injection gasoline filter drum
The electronic fuel injection gasoline filter drum filter element needs to be coated with homemade epoxy filter cartridge adhesive on the filter paper. In the width direction of the filter paper, a glue injection machine needs to be used to inject 3-5 mm width of adhesive on both sides, and then the mechanical transmission drum forms a cylindrical shaped filter element. If the glue is uneven on the filter paper and there is diffusion of moisture during mixing, the glue is too thin. Strictly check for any broken glue.