adhesive for filter

Providing high-precision bonding technology to the global industrial sector

adhesive for filter

What is Adhesive for Filter Assembly?

Filter production relies on reliable adhesive solutions to maintain structural integrity and filtration efficiency. Adhesive for filter is widely used in three core processes: pleat stabilization, filter frame bonding and end cap sealing. Different filter substrates and working environments require matched hot melt formulas to avoid pleat collapse, air leakage and bonding failure during long-term operation.

Available Hot Melt Formulas for Filter Production

EVA Hot Melt Adhesive for Filter

Cost-effective grade with great adhesion to filter paper and non-woven materials. It works well for general air filter pleating on medium-speed production lines.

Polyolefin Hot Melt Adhesive for Filter

Features reliable adhesion on low-surface-energy plastic substrates. The finished bond delivers outstanding vibration resistance, ideal for plastic filter frame assembly.

Polyamide Hot Melt Adhesive

Possesses prominent high-temperature and oil resistance. This formulation is commonly used for end cap bonding of automotive engine filters that face harsh working conditions.

Main Application Scenarios of Filter Adhesive

Filter Media Pleating

Filter Media Pleating

This process secures folded filter paper, non-woven fabric and fiberglass filter media during manufacturing. A suitable adhesive holds pleats evenly spaced and stable, preventing deformation or collapse under sustained airflow pressure. This bonding step is essential for consistent filtration performance and is widely adopted in mass production of various air purification filters.

End Cap Sealing for Cartridge Filters

Forms leak-tight bonding between pleated filter media and plastic or metal end caps. This application is highly common for automotive engine air filters, cabin filters and oil filters. Superior sealing eliminates gaps, effectively preventing unfiltered air or liquid bypass and ensuring the filter can reach its designed service cycle.

 Cartridge Filters

Frame Assembly & Multi-Layer Filter Lamination

Frame Assembly & Multi-Layer Filter Lamination

The adhesive connects completed pleated filter packs with paper, plastic or metal frames to assemble integrated filter units. Meanwhile, it can laminate activated carbon cloth, foam and diverse multi-layer filter media for industrial HVAC filters and household HEPA air purifiers. Flexible adhesive layers resist vibration in running equipment, and low-odor formulations are recommended for indoor air treatment products.

Performance Requirements for Filter Adhesive

  • Matched open time to cooperate with high-speed pleating machines
  • Controlled penetration to avoid blocking tiny pores of thin filter media
  • Flexible bonding layer, resistant to vibration and temperature cycling
  • Low odor options available, complying with RoHS and REACH standards for air filtration products
  • Stable viscosity, compatible with automatic hot melt coating equipment
Premixing stage
Melting and filtering
Extrusion
Pellet cooling
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