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Meltblown Efficiency Drop After Storage? Don't Just Blame the Material

2026-11-02

If filtration efficiency drops after 6 months, it’s usually electrostatic decay, not bad material. Heat, humidity, and pressure accelerate this natural process.

How to Verify the Real Cause:

  1. Check Both Metrics: Look at efficiency AND pressure drop together.
  2. Match Test Conditions: Ensure flow rate, medium, and environment match the original test. Different methods = incomparable data.
  3. Baseline is Key: Compare against sealed samples taken upon arrival. No baseline = no proof.

Storage Best Practices:

  • Avoid light, heat, humidity, and heavy stacking.
  • Define storage limits & retest standards in your order before production.

Dongguan Hengda Solution:
We lock in specs (efficiency, pressure drop, grammage) upfront. With 20+ in-house testing machines, we verify data before shipment so you don't have to guess.

le drapeau
Détails du blog
À la maison > Le Blog >

Blog d'entreprise sur-Meltblown Efficiency Drop After Storage? Don't Just Blame the Material

Meltblown Efficiency Drop After Storage? Don't Just Blame the Material

2026-11-02

If filtration efficiency drops after 6 months, it’s usually electrostatic decay, not bad material. Heat, humidity, and pressure accelerate this natural process.

How to Verify the Real Cause:

  1. Check Both Metrics: Look at efficiency AND pressure drop together.
  2. Match Test Conditions: Ensure flow rate, medium, and environment match the original test. Different methods = incomparable data.
  3. Baseline is Key: Compare against sealed samples taken upon arrival. No baseline = no proof.

Storage Best Practices:

  • Avoid light, heat, humidity, and heavy stacking.
  • Define storage limits & retest standards in your order before production.

Dongguan Hengda Solution:
We lock in specs (efficiency, pressure drop, grammage) upfront. With 20+ in-house testing machines, we verify data before shipment so you don't have to guess.