Modified plastics (e.g., PA+30%GF, recycled PP) suffer low adhesion due to mold release residues and poor polarity. A power tool manufacturer observed 60% cross-hatch failure on GF-nylon casings, with flame treatment causing energy waste and inconsistency.
Chemi Tech Innovative Solutions
Introducing KMB-Plas550 primer treatment additive, enabling customers to overcome three major bottlenecks in their products:
1. Dissolve the oil stains from the release agent and swell the surface of the substrate, forming a 5-10 μ m permeable layer to increase the density of anchoring points;
2. Resin reaction forms a "rubbery" transition layer between PU/UV paint films, adapting to the elastic deformation of the substrate;
Bake at 3.70 ℃ for 3 minutes to form a film, support wet spray wet process, and increase production line speed by 30%.
Customer application data
Added KMB-Plas550 spray PU topcoat
effect:
The adhesion of Baige is stable up to 5B, and there is no cracking after cold and hot cycling (-40 ℃~85 ℃);
The resistance of the release agent has been improved, and the substrate containing 0.8% silicone oil still passed the adhesion test;
The overall cost has decreased by 35% (saving maintenance costs for flame treatment equipment).
Suitable for modified plastic coating of household appliance shells, car interiors, etc., compatible with water-based/solvent based systems