Trade fair: our group is exhibiting — Adhesives & Bonding Expo Europe, 10–12 November 2026, Messe Stuttgart, Hall 1, Booth 1001. Details and appointments →
"Chemical resistant" is a category, not a specification. These three fail in different ways, and an RFQ that does not name the chemistry comes back with three prices you cannot compare.
| Acid-resistant | Alkali-resistant | Salt-spray-resistant | |
|---|---|---|---|
| What attacks it | Acid creeps under the mask edge | Alkali softens the backing itself | Salt fog defeats adhesion over days of wet exposure |
| Typical process | Plating, pickling, PCB etch | Caustic degreasing, e-coat, anodizing pre-treatment | ASTM B117 chambers, marine and coastal service |
| Exposure | Minutes to an hour, often immersion | Minutes, immersion or spray | Days, continuous wet |
| What to state in the RFQ | Acid and concentration | Solution and concentration | Test standard or field exposure |
| Fails as | Bleed-through at the edge | Backing swells, mask distorts | Tape lifts partway through the test |
Name the chemistry, the concentration, whether it is immersion or splash, and the dwell time. Those four lines are what make quotes comparable. A general chemical-resistant grade is only right for mild, mixed exposure.
Not sure which side your application falls on? Send EJOY the temperature, the media and the width you need — we will say which grade applies and ship free samples before you commit to volume.
Only for mild, mixed exposure. The three attack a tape by different mechanisms — edge creep, backing softening and slow adhesion loss — so production lines normally run separate grades. Name your chemistry and EJOY quotes the right one.
The media and concentration, immersion or splash, dwell time, the substrate, plus width and annual volume. Without the chemistry, quotes are not comparable.
Yes. EJOY ships free samples so you can verify masking and clean removal on your own line before committing to volume.
Masks and protects against acid attack — plating, etching & battery lines.
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Stands up to caustic and alkaline solutions — cleaning, e-coating & battery.
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Survives salt spray and marine exposure — corrosion testing & coastal use.
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Stands up to acids, alkalis and salt spray — plating & chemical process protection.
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