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Exhaust air purification in adhesive processing – safe removal of VOCs

Adhesive processing often results in significant emissions of volatile organic compounds (VOCs). Solvent-based adhesives in particular release substances that are harmful to health and often flammable during application, drying, and curing—including toluene, cyclohexane, heptane, and methyl acetate.
Whether in film processing, the packaging industry, building materials manufacturing, vehicle assembly, or electronics production, targeted exhaust air purification is necessary to comply with legal limits, minimize odors, and prevent explosive atmospheres. oxytec supplies customized, modular exhaust air solutions for this purpose.

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Typical VOC sources in adhesive processing

Process Typical VOCs Special features
Application of solvent-based adhesives Toluene, cyclohexane, heptane, ethyl acetate High emissions during spraying, rolling, or brushing
Drying and curing Methyl acetate, MEK, alcohol compounds VOCs escape through heat and convection
Pre-treatment & cleaning Acetone, isopropanol, solvent residues Short-term high loads, often with manual application
Lamination and coating Hydrocarbons, esters, ketones Large-scale VOC leakage, partially diffuse emissions
Reactive adhesives / resin adhesives Epoxy resins, MMA, styrene Odor pollution and partially ATEX-relevant due to volatile monomers

Why are VOCs problematic in adhesive processing?

Health hazards: Many VOCs are toxic, irritating, or carcinogenic.

Environmental impact: VOCs contribute to ground-level ozone, smog, and particulate matter.

Explosion hazard: Many solvents form flammable mixtures with air.

Legally regulated: Requirements under TA Luft, VOC Directive, 31. BImSchV.

In addition, unpleasant odors can be a nuisance for employees or residents—especially in open applications or with inadequate ventilation.

Legal requirements for adhesive processing companies

  • TA Luft (2021): Limitation of total VOC content in exhaust air
  • 31. BImSchV (VOC Regulation): Limit values depending on the quantity used
  • VOC Directive (2010/75/EU): EU-wide minimum requirements
  • ATEX Directives: for flammable vapors or explosive atmospheres

Oxytec supports you in the legally compliant planning and documentation of your exhaust air purification.

Get advice now – safe exhaust air solutions for your adhesive processes

Would you like to reduce your VOC emissions, comply with legal requirements, and protect your employees and the environment at the same time?

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Adsorption of residual solvents and odors – flexible and safe.

Advantages:

  • Particularly effective at low concentrations

  • Can also be retrofitted

  • Can be combined with UV systems

KAT Industry

In cases of very high VOC pollution or combined dust emissions, Oxytec can provide individual consultation.

Clean Washer Air

Similar areas of application for our exhaust air systems

  • Film and packaging lamination

  • Insulation material production (e.g., with PUR/PS adhesives)

  • Building board manufacturing

  • Textile lamination

  • Adhesive processes in the automotive and aviation sectors

  • Technical adhesive applications (e.g., in electronics or filter construction)

Advantages of Oxytec systems for adhesive processing

  • Effective against VOCs, odors, and germs
  • Modular for different process areas
  • Low energy consumption, high availability
  • Compatible with existing systems
  • Support with approval and subsidy applications

FAQ – Frequently Asked Questions

Which VOCs are produced during adhesive processing?

Adhesive processing produces a variety of volatile organic compounds (VOCs), including:

  • Toluene, xylene, cyclohexane, methyl acetate – contained in solvents or adhesives

  • Acetone, MEK, isopropanol – found in cleaning agents and during the drying of adhesives

  • Alcohols, esters, ketones – which are released in many
    industrial adhesive applications These substances are often hazardous to health and contribute to air pollution.

Why do I need to clean exhaust air in my adhesive processing?

Exhaust air purification is necessary in order to:

  • Comply with legal requirements (e.g., VOC limits in the TA Luft and the VOC Ordinance)

  • Minimize health hazards from toxic or irritating VOCs

  • Prevent explosion risks, as many of the solvents used are flammable

  • Reduce odor nuisance for employees and residents

  • Comply with environmental regulations and reduce the carbon footprint

Which technologies are suitable for exhaust air purification in adhesive processing?

The choice of the right technology depends on the VOC concentration, the process volume, and the safety requirements. Common options are:

  • UV ozone systems: Effective for breaking down VOCs and odors without changing filters

  • Activated carbon filters: For the adsorption of solvents and odors

  • Thermal oxidation or catalytic afterburning: For very high VOC loads

  • Exhaust air scrubbers: For removing VOCs in water-soluble or aerosol-form compounds

How much space does the exhaust air purification system require?

Oxytec systems are designed to be space-saving and can often be installed directly in the exhaust air duct or next to the system. In many cases, it is sufficient to integrate the devices into existing rooms or set them up as a modular container solution. Our experts will advise you on the exact requirements.

How often does an exhaust air purification system need to be serviced?

Maintenance intervals vary depending on the system:

  • UV ozone systems usually only require annual lamp replacement and regular cleaning.

  • Activated carbon filters must be replaced every 6–12 months, depending on the load

  • Catalytic afterburning systems require more intensive maintenance, especially in cases of high VOC emissions
    We also offer maintenance contracts and remote monitoring options to minimize downtime.

Can I retrofit my existing system?

Yes, our systems can be retrofitted. They can be used for new plants as well as for the modernization of existing production processes. We offer customized solutions that can be integrated into existing exhaust air systems without disrupting production.

Are Oxytec’s exhaust air purification systems energy efficient?

Yes, our systems are particularly energy-efficient. Compared to conventional thermal afterburning systems, UV ozone and activated carbon filters require up to 80% less energy. CO₂ emissions are reduced by up to 98%.

The difference is made by what is known as “cold combustion” using UV light. This generates a storm of electrons that specifically targets the organic molecules in the exhaust air stream. Energy is only required to operate the lamps.

What subsidy programs are available for exhaust air purification systems?

There are various subsidy programs at the federal, state, or EU level that support investments in emission technologies, energy efficiency, or environmental technology. Oxytec is happy to assist you with subsidy advice and support you in the application process to facilitate the financing of your exhaust air purification system.

How do I find the right exhaust air purification solution for my adhesive processing?

Just get in touch! Our expert advisors will work with you to analyze:

  • The VOC emissions in your production process

  • The technical requirements of your plant (e.g., air volumes, temperature)

  • The legal situation and applicable environmental regulations
    Based on this, you will receive a customized solution that meets your requirements while minimizing operating costs.