A real-shot of a woodworker brushing finish onto a wooden board.
Once water-based wood paint is sprayed at higher line speed, the film cures before it has time to level between spray and surface dry; orange peel repeats piece by piece, ripples are clear under raking light, and rework and sanding hours climb with it.
Chemi Tech builds the KMP-4100 series leveling agent for water-based wood paint and furniture coating systems, with dosage adjustable to solids content and spray rhythm. This grade is a water-based leveling agent with marked surface tension reduction; its dynamic surface tension is likewise controllable, compatibility is good without cratering, and thermal stability holds through the drying section without decomposition or yellowing. Against measured data of orange peel grade and gloss reading, the suitable range of the KMP-4100 series can be set.
Chemi Tech Leveling Agent Advantages
The KMP-4100 series leveling agent from Chemi Tech is configured for water-based wood paint systems. It reduces surface tension markedly, letting the film spread fully on the board and gradually flattening orange peel and edge pull-in; dynamic surface tension is controllable, so the paint spreads in time under high-speed spraying; it has little effect on intercoat adhesion, leaving margin for recoatability; it has little effect on gloss, giving an even gloss after film formation; thermal stability is good, with no decomposition or yellowing through the drying section; and dosage is economical, set against solids content, achieving one-pass spray forming.
Industry Pain Points and Solutions
The leveling problem in water-based wood paint spraying, at root, comes from the combined action of spray shear and surface tension mismatch, finally concentrating in two places: repeated orange peel with edge pull-in, and unstable intercoat adhesion on recoat.
Orange peel and edge pull-in copy along the board piece by piece, ripples clear under raking light. Once the KMP-4100 dosage is set against solids content, the film spread can be pulled back open.
On recoat, intercoat adhesion is unstable, with delamination risk between two spray passes. KMP-4100 leaves margin for sensitive intercoat-adhesion systems.
The loss from rework and sanding finally converts into per-piece coating cost. Against changes in solids content and spray rhythm, the dosing range can be set to secure one-pass spray forming.
Typical Conditions and Verification
Customer: a furniture enterprise in Guangdong, applied to the spray line for water-based wooden doors and wood topcoat.
With an ordinary leveling agent underdosed, orange peel does not improve markedly and appears in sheets once spray rhythm is raised. This spray line had been running an additive dominated by static surface tension. After rectification, a suitable model KMP-4105 was selected from the KMP-4100 series, dosage and addition point re-set against spray rhythm, and the drying curve fine-tuned in sync. After the replacement: orange peel fell back to the pass band, edge pull-in basically disappeared, intercoat adhesion between two spray passes passed stably, and gloss reading stayed steady.
FAQ
After speeding up water-based wood paint, should the leveling agent dosage be raised accordingly?
It all depends on whether the leveling agent brings dynamic surface tension down and whether it affects intercoat adhesion. KMP-4100 has completed comparative measured data on orange peel and intercoat adhesion across multiple solids levels, with thermal stability through the drying section without decomposition or yellowing. Actual dosage is set against solids content and spray rhythm as the baseline; Chemi Tech sets the suitable range by parallel comparison of orange peel grade and gloss reading on the board.