Overview
LENETA WC-32 Mayer Rods, also known as Wire-wound drawdown bar coating applicator or Mayer Rod, is a laboratory tool for preparing coatings to specific Film thickness films. Its design length is 305 mm and Spreader width is 254 mm, which is sufficient for most standard size baseplates and cardboard needs.
Features
Wide range of wire diameters: Available in a wide range of models from 0.064mm to 1.9mm (2.5 to 75 mils), with the WC-32 model having a wire diameter of 0.81mm (32 mils).
2. Accurate film Film thickness: It can be prepared with a wet film thickness of 4.5 to 150 microns (0.18 to 6 mils), and the corresponding film Film thickness of the WC-32 model is 59 microns (2.3 mils).
3. Reasonable structural design: the total length of the rod body is 305 mm (12 inches), and there are 25 mm hand-held parts at both ends for easy operation; the rod diameter is 12.7 mm (1/2 inch), providing good rigidity.
4. Durable material: made of all stainless steel, corrosion-resistant, even in contact with water-based paints will not rust, and nonmagnetic, can be used with the steel plate on the magnetic card.
5. Spreader Width Applicable: The 254 mm (10 inch) Spreader width is suitable for most standard test baseplates.
Principle
Mayer Rods' Working Principle is based on the precision wire wound on its surface. When the operator places the paint on the substrate and scrapes it with a coating applicator at a uniform force and speed, the wound wire acts as a gap height control point to scrape off the excess paint, leaving a wet-film coating of uniform film thickness in proportion to the diameter of the wire on the substrate.
Applications
Coatings R & D and testing, inks performance evaluation, Adhesive Spreader, laboratory sample prepative, quality control and comparison
Standards
The data did not mention specific compliance criteria.
Steps
1. Select the appropriate model of Mayer Rods and ensure that its wire diameter matches the desired wet film thickness.
2. Pour or drop the paint sample to be tested on the starting end of the test baseplate.
3. Hold the hand-held part at both ends of the coating applicator, and contact the baseplate with one side of the wrapped wire facing down at an appropriate angle (usually 45-60 degrees).
4. With uniform and stable force and speed, scrape the coating applicator from one end of the baseplate to the other at one time, keeping the angle and pressure constant during the process.
5. Lift the coating applicator, check and evaluate the wet-film coating formed on the substrate.
Notice
• Please select the appropriate bar type according to the required wet film thickness before use.
• Maintain uniform force, speed and angle during operation to ensure uniform film Film thickness.
• After use, the coating applicator should be thoroughly cleaned with a suitable solvent in time to prevent the coating residue from curing and affect the accuracy of the next use.
• Pay attention to protecting the wrapped wire when cleaning to avoid bumping or deformation.
Store in a drying environment to avoid contact with corrosive substances.
