2. Huyglas ® For pulsejet filterbag applications By

3. Introduction 1.Understand the basics of Huyglas 2. Know the core products 3. Learned how Huyglas has upgraded

4. Huyglas is: Fiberglass Needlefelt Treated with silicone/PTFE Made for demanding high temperature filtration applications.

5. Where has Huyglas been used? Product collectors: Carbon Black, Cement Clinker, and TiO 2 Kilns: lime, cement, koalin, and asphalt. Smelters: lead and tin. Incinerators: medical, municipal, and chemical. Industrial boilers: stoker fired, pulverized coal, fluidized bed, and hogged fuel.

6. Huyglas Basics ProductWeight (osy)Temp. (F)EfficiencyFiber Diameter (μm) 1607 27525Highest3.8 1701 16525Highest3.8 1405 22525High6 1105 19525High6 Product selection is determined by individual application requirements. Further information is available upon request.

7. Where can Huyglas be used? High Temperature: 300-525 0 F, with excursions to 600 0 F Where the conditions risk chemical attack. Very fine particulate High efficiency requirements:

8. Huyglas Improvement Needled fibers must adhere to the woven support fabric Typical end-of-life is delamination of the felt from the support fabric Fiber abrasion by the cage creates the delamination

9. The DuraFlex coating improves: DuraFlex resists delamination by: –Creating an abrasion resistant layer on the cage side of the fabric –Increasing the bond strength between the felt fibers and the support fabric Providing longer bag life to the end user.

12. Showing the DuraFlex difference: –The difference in bond strength. –View the following photos :

13. Two Views of Uncoated Fabric (top and side)

14. Side view of coated 1105 Coated fibers break before delamination.

15. Conclusions : The DuraFlex coating applied to Huyglas fabric provides: Increased protection from abrasion. Stronger bonding of the batt fiber to scrim Ultimately, longer baglife.

16. For further questions Please email FSI at: Sales@HighTempFelt.com