The reasons why whiteboard pens cannot be wiped off may involve many aspects, such as ink composition, handwriting status, cleaning methods, and whiteboard materials. The following is a specific analysis:
1. Ink composition and curing mechanism
Solvent volatilization and curing
Whiteboard pen ink contains solvents such as alcohol. After writing, the solvent evaporates to solidify the ink into a film. If the handwriting is left for too long (such as more than 24 hours), the resin components in the ink may be closely combined with the surface of the whiteboard due to oxidation or adsorption, making it difficult to peel off with conventional wiping.
Oil component penetration
If there are tiny pores on the surface of the whiteboard (such as on inferior boards or due to wear and tear after long-term use), the oily components in the ink may penetrate into the board surface, forming a residual effect similar to an oily marker, and ordinary wipers cannot penetrate and remove it at this time.
2. Handwriting status and cleaning method
Drying time influence
Instant handwriting: Because the solvent of newly written handwriting has not completely evaporated, it can usually be directly removed with a whiteboard eraser or soft cloth.
Stubborn handwriting: If the handwriting is dried for more than 8 hours, it is necessary to use alcohol, white vinegar, and other solvents to soften the ink film before wiping.
Cleaner compatibility
Ordinary whiteboard eraser: only suitable for fresh, uncured handwriting.
Alcohol/white vinegar: dissolves oily components and is suitable for handling semi-cured handwriting.
Professional cleaner: contains surfactants, can penetrate the gap between the ink film and the board surface, and remove stubborn residues.
Wiping skills
One-way wiping: avoid repeated friction that causes the ink film to break and embed into the board surface.
Appropriate force: Gentle wiping can reduce the residual ink film fragments, and heavy pressure may cause scratches on the board surface.
3. Whiteboard material and surface characteristics
Material differences
Enamel/metal whiteboard: The surface is dense, and ink is not easy to penetrate, but scratches may appear after long-term use, resulting in ink residue.
PET/PVC film whiteboard: The surface is smooth, but the film layer may be fluffy due to friction, affecting the ink adhesion and cleaning effect.
Surface wear
Frequent use or improper cleaning (such as using hard tools) will cause the surface of the whiteboard to wear and form tiny grooves, making it easier for ink to remain.
4. Environment and usage habits
Environmental humidity
A high-humidity environment will slow down the drying speed of ink, making the ink film easier to combine with the board surface, increasing the difficulty of cleaning.
Writing pressure
Writing hard will make the ink penetrate deeper into the micropores of the board surface, increasing the risk of residue.
