Different Applications of Filter Adhesives

Dec 20
19:22

2019

Rajeevking

Rajeevking

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Sealants are a vital and widely-used part of the filter industry. Filter adhesives are used to bond different parts of oil, air, water, and HVAC purifiers and offer lasting assembly solutions.

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The filter market is booming due to several modern trends that encompass automotive weight reduction,Different Applications of Filter Adhesives Articles increased environmental regulations, and water scarcity. All these changes and challenges have not only driven the current market growth but also impacted the end-users. Collectively, the responsibility has fallen on the shoulders of filter manufacturers to cope with these changes by keeping a watchful eye on the factors that determined the correct application of an adhesive on these devices. Sealants in this industry are utilized to construct the final assembly of oil, air, HVAC, and water purifiers. Their application and materials they purify are equally diverse. Just like automotive adhesives and any other sealant, they have a few common applications, which we have detailed below.

1) Sealing the Rolled Seam on the Base Plate

Rolled seams are found in oil, air, and fuel purifiers and can be sealed with anaerobic sealants and rubber-based solvent sealants. Comparing the application of both, the most efficient sealant in terms of durability and eco-friendliness will be anaerobic. Anaerobic solutions might cost one a bit more than rubber-based solvent sealants, but they win the race by being non-flammable and 100% solid and by lending themselves to automation. However, the overall process of rubber-based sealants is expensive when factors like reject rates, disposal, and hazardous shipping are considered, irrespective of the low initial cost.

2) Bonding Rubber Gaskets to the Base Plate

Rubber gaskets are found on the base plates of oil, hydraulic fluid, pharmaceutical, biomedical, food, and beverages purifiers. Cyanoacrylates and epoxies are two commonly used adhesives for bonding rubber gaskets to the base plates and are chosen based on required temperature and chemical resistance of the filter and desired assembly process.

3) Bonding Filter Assembly to the End Plate

Although assembly of the different components of a metal purifier to the end cap can be done by welding, many manufacturers prefer using sealants for that purpose. They believe if they want to undergo a simple process that doesn’t damage the media, which welding can do, nothing is more beneficial than single part epoxies. Epoxies bond the assembly parts by ensuring additional assurance of seal for it is used as a potting compound and bonding agent.

4) Sealing Disc-Shaped Filters

As stated above, there are two ways to bond purifiers i.e., welding and sealants, even if they have to bond disc-shaped purifiers made of metal mesh media and metal housing. However, if it is disc-shaped poly or paper media within a plastic housing, solvents, bonds, or ultrasonic welding is done. The bond strength and flued resistance of ultrasonic and visible light curable sealants outweigh that of epoxies and cyanoacrylates, respectively.

As an overview, it can be said that filter adhesives such as epoxies, cyanoacrylates, and anaerobic can be chosen according to the distinctive factors dictated above. These sealants assure a strong bond of the rolled seam, filter assembly, disc-shaped purifiers, and gaskets to the base plates with prolonged durability.