Activated Carbon and Felt Lamination in Filter Production
In active carbon filter lamination, the adhesive must be applied strong enough to hold the granule in place but in a controlled manner so as not to unnecessarily close the air passage area. Pattern, weight, felt surface, line speed and printing are tested together.
The task of the adhesive in the active carbon filter structure is not only to combine two felts. It should maintain the distribution of carbon granules, reduce dust and spillage, prevent layers from separating at the pleat or cutting stage, and not unnecessarily restrict air passage through the filter.
What is the binding target?
Proper bonding limits the displacement of carbon during use and transport. Excess adhesive can close pores, create hard areas and increase pressure loss. Therefore, not only peeling resistance; carbon retention, air permeability, odor, flexibility and aging are evaluated together.
Effect of application pattern
| Pattern approach | Advantage | Need to be controlled |
|---|---|---|
| Fine line/mesh | Can protect open area | Granule escape and line continuity |
| Spot | Can provide flexibility | Point distribution and contact area |
| Film-like coating | High retention potential | Air permeability and hardness |
The most suitable pattern is determined by sample according to carbon grain size, felt weight and filter usage class. is determined.
Material and process controls
- Grain size and surface dust of carbon
- Surface energy, grammage and fiber structure of nonwoven felt
- Adhesive application temperature and actual grammage
- Carbon sprinkling homogeneity
- Lamination pressure and cooling distance
- Pleat, layer after cutting and framing integrity
Completely covering the carbon with adhesive may adversely affect adsorption performance. Therefore, application geometry is as important as product selection.
Technical matching with product family
Selection of thermoplastic or reactive system in filter production; It is made according to service temperature, odor, line speed and material structure. For an initial comparison, hot melt adhesives and reactive hot melt product family can be examined. Published TDS information for options such as Jowatherm 607.60 and 607.61 in the technical product registration must be verified with the actual filter sample.
Sample plan
The same approach applies to filter manufacturers in Kocaeli, Istanbul, Izmir, Bursa and Tekirdağ: prepare at least three controlled grammage/pattern levels; Measure air permeability, carbon shedding and layer strength in the same samples. Separate the first products after the line stop. You can request technical evaluation by sharing your application data.
Activated Carbon and Felt Lamination in Filter Production hakkında merak edilenler
Should activated carbon be completely covered with adhesive?
Usually the goal is to fix the carbon and keep the active surface as open as possible; The pattern is optimized by testing.
Does higher grammage provide better filter bond?
After a certain point, air permeability and flexibility may be damaged; Strength and pressure loss should be measured together.
Does felt type affect product selection?
Yes. Fiber structure, surface energy, weight and temperature resistance affect wetting and bonding performance.
What tests are performed in filter lamination?
Peel or layer resistance, carbon shedding, air permeability/pressure loss, odor and aging are evaluated according to the application.
Technical resources and verification
The content has been prepared in Turkish with the technical experience of Koçak Endüstri, based on the following manufacturer resources.
Let's choose the right adhesive for your application together
You can get technical guidance and offers for Jowat products by sharing your machine, material and consumption information.
Get a technical quote
