filter media and stabilize it using a hot melt adhesive.” Adhesives like Jowatherm 262.25 based on ethylene-vinyl acetate (EVA) are optimally adapted for the pleating [...] process, with the appropriate open time and high green strength. In addition, hot melt adhesives are solid when cold but remain flexible enough to facilitate
https://www.jowat.com/tr-TR/haber-odas-detay/adapting-adhesives-for-the-pleating-process/