Overview
LENETA WC-38 Mayer Rods, also known as Wire-wound drawdown bar coating applicator or Mayer Rod, is a laboratory tool for preparing coatings into films of film thickness. Model WC-38 can be prepared with a wet film thickness of approximately 72 µm (2.8 mil) and a Spreader width of 254mm (10 inches) for most standard size baseplates and cardboard.
Features
Wide range of wire diameters: Available in models with a wide range of wire diameters from 0.064mm to 1.9mm (2.5 to 75mils), the WC-38 has a wire diameter of 0.97mm.
2. Adjustable film Film thickness: Different models can be prepared with film Film thickness of 4.5 µm to 150 µm (0.18 to 6 mils), WC-38 corresponds to about 72 µm (2.8 mil).
3. Sufficient applicable width: Spreader width is 254mm (10 inches), enough to cover common standard baseplates.
4. Ergonomic design: The total length of the rod is 305mm (12 inches), and there are 25mm long hand-held parts at both ends for easy operation.
5. Sturdy and durable structure: The rod diameter is 12.7mm (1/2 inch), providing good rigidity.
6. Excellent material: made of stainless steel, corrosion-resistant, rust-proof, and nonmagnetic, can be used with the steel plate on the magnetic card.
Principle
Mayer Rods controls the Spreader Film thickness through a precision wire (wire) wound on its surface. To operate, an appropriate amount of paint is placed on one end of the substrate, and then the coating applicator is pushed at uniform speed and pressure. The wound wire scrapes off the excess paint, leaving a film thickness on the substrate. A uniform wet-film determined by the diameter of the wire.
Applications
Coating R & D and testing, inks performance evaluation, Adhesive Spreader, laboratory sample prepative, quality control, coating thickness research
Standards
The data did not mention specific compliance criteria.
Steps
1. Select the appropriate wire diameter (type) coating applicator to obtain the target wet film thickness.
2. Spreader the substrate (such as baseplate, cardboard) flat.
3. Pour or drop a sufficient amount of paint sample at the starting end of the substrate.
4. Hold the hands at both ends of the coating applicator to contact the coating at an appropriate angle (usually close to vertical) and uniform pressure.
5. Pull the coating applicator across the entire Spreader area at a steady, uniform speed.
6. Clean the coating applicator immediately after finishing the Spreader.
Notice
• Before use, select the appropriate bar type according to the target wet film thickness.
• Ensure that the surface of the substrate is flat and clean to obtain a uniform film.
• Operate at a constant speed and stable pressure to avoid stopping halfway.
• After the Spreader is completed, the coating applicator should be thoroughly cleaned immediately to prevent the coating curing from affecting the accuracy, especially when using fast-drying coatings.
• Use appropriate solvent when cleaning and handle gently to avoid damage to the wrapped wire.
Store in a drying environment to avoid bumping to maintain accuracy.
