Reviewing Hydrolysis Risk When Selecting Polyester Dryer Fabric

Polyester dryer fabric can be exposed to demanding temperature and humidity conditions in a paper-machine dryer section. Hydrolysis resistance should therefore be reviewed as an operating-risk question, not treated as a label that automatically fits every machine.

Identify the exposure pattern

Describe the fabric position, paper grade, operating temperature and humidity information available at site, shutdown pattern, cleaning practice, and observed failure mode. A request is more useful when it explains where deterioration appears and how the previous fabric was used.

Separate material review from an unsupported life claim

A material or construction recommendation should state the known assumptions and the limits of available information. Actual service life depends on machine conditions, installation, contamination, mechanical contact, and operating practice. When those factors are not confirmed, they should remain open review points.

Prepare a focused supplier discussion

Send photos of the affected area where permitted, the old fabric specification, dimensions, seam requirement, and the site conditions already recorded. The supplier can then review suitable options from the dryer-fabric range. Use the technical contact page to provide the position and exposure details.

Summary

A useful hydrolysis review connects material choice with real exposure conditions and makes uncertainty visible before production begins.