Release paper moisture content: Don't ignore this key indicator

As a release paper sales engineer, I am often asked "Why is the adhesive effect of release paper poor?" It's mostly due to the moisture content.

When the moisture content is too high, the paper will slightly expand, and the edges are prone to curling during cutting. Bubbles may also appear when attached to the substrate.

Even more troublesome is that moisture can affect the adhesion of the release agent, causing the release force to fluctuate, and in severe cases, even delamination.

If the moisture content is too low, it is more concealed: the paper is brittle, and chips are easily generated during die-cutting, which stick to the product and cause scrap.

Moreover, dry paper has strong moisture absorption, and once exposed to high humidity environments, it will quickly absorb water and deform, rendering the previous processing accuracy useless.

The control trick is simple: keep the workshop humidity at 50% -60%, seal the release paper with PE film when storing, and avoid stacking it directly on the ground.

 Unpack the paper 24 hours before use to allow it to adapt to the humidity of the environment.

Remember, it is recommended to control the moisture content of release paper at 4% -6% (slightly different materials), and regularly use a moisture meter for sampling to avoid 80% of bonding problems.