Overview
LENETA WC-40 Mayer Rods is a laboratory tool for preparing coatings into film thickness films, also known as Wire-wound drawdown bar coating applicator, Mayer Rod or wrap bar. The model WC-40 corresponds to a wire diameter of 0.10mm (4mil), can be prepared for films of approximately 8µm (0.3 mil) thickness, and has a Spreader width of 254mm (10 inches).
Features
1. Wide range of wire diameter: from 0.064mm to 1.9mm (2.5 to 75mils), a variety of models are available, and the wire diameter of the WC-40 model is 0.10mm.
2. Controllable film Film thickness: The preparatory wet film thickness range is about 4.5 to 150 µm (0.18 to 6 mils), and the WC-40 model corresponds to about 8 µm.
3. Sufficient width: Spreader width is 254mm (10 inches), enough to meet most standard size baseplates and cardboard.
4. Reasonable design: the total length of the rod body is 305mm (12 inches), and there are 25mm long hand-held parts at both ends for easy operation; the rod diameter is 12.7mm (1/2 inch), providing good rigidity.
5. Durable material: made of all stainless steel, corrosion-resistant, even in contact with water-based paints will not rust, and is nonmagnetic, can be used with the steel plate on the magnetic card.
Principle
Measurement of paint by Mayer Rods uses wires (wires) that are tightly wound on their surface. As the rod rolls over a flat substrate surface, the wound wires scrape off excess paint, leaving a uniform wet-film coating on the substrate that corresponds to the wire diameter (wire diameter). Film thickness.
Applications
Coating R & D and testing, inks performance evaluation, Adhesive Spreader, laboratory sample prepative, quality control
Standards
The data did not mention specific compliance criteria.
Steps
1. Pour an appropriate amount of the paint to be tested onto a flat, clean end of the substrate.
2. Hold the hands on both ends of the Mayer Rods and place the wound part behind the paint droplet.
3. Maintain a stable and uniform pressure and speed, and push the coating applicator forward in a straight line to spread the film formation on the substrate.
4. Lift the coating applicator to check and measure whether the formed wet film thickness meets expectations.
Notice
• Ensure that the substrate surface is flat, clean and drying before use.
• When operating, keep the coating applicator perpendicular to the surface of the substrate and apply uniform and stable pressure.
Pushing speed should be uniform, too fast or too slow may affect film uniformity and Film thickness.
• After use, the coating applicator should be thoroughly cleaned with a suitable solvent in time to prevent the coating residue curing from affecting the accuracy.
Store in a drying environment to avoid bumping to protect the winding structure.
