Coating Laboratory Test Rod

A coating applicator rod is a metal rod with specific grooves used to create a uniform wet film on a substrate surface through a scraping method. The grooves on the rod control the amount of coating transferred, making it suitable for simulating coating processes in laboratories, testing coating thickness, and evaluating leveling performance.
Selection
When selecting, consider the substrate roughness and paint viscosity. For rough surfaces, choose a rod with a larger wire diameter; for high-viscosity paints, opt for specifications with deeper grooves. The rod material must be corrosion-resistant, with stainless steel suitable for most solvent-based paints and tungsten carbide ideal for high-wear scenarios. The wire diameter specification determines the wet film thickness, typically ranging from 6 to 50 μm.

Terms

Standards

Instruments

Using the formed pRoduction process, Coating Weight is about twice that of the wire-wound coating Rod, wet film thickness is 13μm, film accuracy reaches 0.5 μm, and the material is 304 stainless steel.

$ 120.00

Wet film thickness 22.9 microns, diaMeter 9.52 mm, the forming Rod uses an extrusion process to process continuous grooves, with no wire breakage and easy cleaning; the wire-wound Rod is based on the traditional principle, and there are differences in coating amount.

$ 167.00

Using the formed pRoduction process, the wet film thickness is 6 microns, the accuracy is 0.5 microns, the cleaning is convenient and there is no worry of broken wire, to ensure the precision and durability of the coating prepative.

$ 120.00

Support bar and Drawdown blade double coating method, suitable for high, medium and low viscosity materials; coating speed 1~ 300mm/s stepless adjustable, Blade Coating accuracy +/- 3μm; equipped with innovative clamshell magnetic Drawdown blade and simple bar installation, easy to clean and load; Heating and Vacuum chuck function to improve Spreader mass.

$ 10562.00

Wet film thickness 45μm, main Rod diaMeter 10mm, effective application width 600mm, using SUS304 material, Coating Weight, length and surface preparation can be customized, suitable for a variety of Spreader conditions.

$ 267.00

Support bar and Drawdown blade two coating methods, suitable for different viscosity materials. Equipped with heating and Vacuum chuck function, servo motor to ensure stable operation. Drawdown blade film thickness control accuracy is high, uniform film.

$ 6205.00

Employing an extrusion production process, the coating thickness is 105 microns, the coating width reaches 300 mm, and the coating accuracy can achieve 0.5 microns, ensuring coating uniformity and high-precision control.

$ 178.00

Using SUS304 stainless steel material, wet film thickness 52μm, main Rod diaMeter 10mm, effective application width 600mm, groove design can achieve accurate Coating Weight control.

$ 267.00

Utilizing a dual coating method with wire rod and doctor blade, the coating speed is adjustable from 1 to 300 mm/s with stepless speed control, ensuring high precision in film thickness control. Equipped with vacuum adsorption and heating functions, the temperature uniformity reaches ±1°C. The flip-top design facilitates easy cleaning.

$ 24279.00

The wire-wound structure enables coating with a 171.5-micron thick film, while the stainless steel material ensures corrosion resistance and long-term durability. The 9.52mm diaMeter Rod body, combined with 1.91mm steel wire, ensures operational stability.

$ 167.00

Imported High Accuracy coating Rod, Spreader thickness range 1~ 571.5μm, accuracy +/- 0.003mm, speed 5~ 200mm/s, support Touchscreen control and a variety of customized functions.

$ 6367.00

The extrusion production process ensures uniform coating, with a wet film thickness of 60μm meeting the demands of precise experiments. The 304 stainless steel material is durable and easy to clean, making it suitable for diverse coating performance tests.

$ 178.00

With bar and Drawdown blade two Spreader mode, using clamshell Drawdown blade head and new bar Installation method, easy to clean. Spreader speed and length can be freely adjusted, film thickness control accuracy is high, suitable for Glass, cardboard and other substrates.

$ 2978.00

Formed design Coating Weight is about twice the wide-wound drawdown bar, wet film thickness 13μm, film accuracy of 0.5 micron, 304 stainless steel material to ensure durability.

$ 157.00

Drawdown blade and bar coating method, with Vacuum chuck function, high film thickness control accuracy, application length and speed can be adjusted freely, easy to clean, suitable for a variety of substrates.

$ 11692.00

Articles

Laboratory rod coater for submicron wet film preparation of photoresist.
This article introduces the process of using a laboratory bar coater to prepare submicron wet films of photoresist.
Key Points for Controlling Coating Longitudinal Uniformity with Manual Rod Coater Constant Speed Dragging Techniques
This article discusses how to control the longitudinal uniformity of the coating by dragging at a constant speed when using a manual wire rod coater. A constant-speed drag is crucial, as it directly determines the consistency of the wet film thickness.
Derivation and Validation of the Quantitative Relationship between Wire Diameter and Wet Film Thickness in Wire Wound Coating Bars
This paper investigates the relationship between the wire diameter in a wire-wound rod coater and the wet film thickness. Theoretically, under ideal conditions, the wet film thickness is approximately half of the wire diameter.
Actual Coating Thickness Deviation of Stainless Steel Wire Rod Coaters at Different Slurry Solid Contents
This article analyzes the actual coating thickness deviation of stainless steel wire rod coaters under different slurry solid contents. The study finds that the solid content of the slurry affects its viscosity and flowability, leading to deviations in the actual coating thickness from the theoretical value.
Coating film preparation techniques: comparison between wire-wound applicators and wet film preparators
This article compares two commonly used tools in laboratory coating film preparation: the wire rod coater and the wet film applicator.
The laboratory coating machine easily coats various aqueous and oily slurries.
The laboratory film applicator is a precision instrument used to prepare uniform coatings on substrates, primarily operating on the principle of a blade or wire-wound rod. It allows adjustment of parameters such as speed and pressure to control coating thickness.
How to achieve high uniformity in silver nanowire transparent conductive films through wire rod coating
This article introduces how to prepare uniform silver nanowire transparent conductive films using the wire rod coating technique. These films, which use silver nanowires as the conductive material, exhibit high transparency and conductivity, making them suitable for applications such as touch panels.
Common Troubleshooting for Wire Bar Coater: Solving Issues of Streaking and Uneven Thickness
This article mainly introduces solutions to two common faults in the operation of the wire rod coater—coating streaks and uneven coating thickness.
Blade Coating VS Wire Rod Coating: The Precision Battle and Selection Guide in the Lab
Blade coating and wire bar coating are two commonly used physical coating methods in laboratories. When selecting between them, factors such as material properties, target thickness, and experimental conditions must be considered. Both methods have their own advantages and can be flexibly chosen or used to validate each other based on specific requirements.
Application of Wire Bar Coater in the Preparation of Coating, Ink, and Printing Samples
A wire-wound rod coater is a laboratory tool used for preparing uniform wet film coatings on flat substrates, widely applied in the production of samples in the coatings, inks, and printing industries.
The working principle of laboratory wire rod coaters and methods for controlling coating thickness
The laboratory wire rod coater is a precision instrument used to prepare uniform, thickness-controllable wet film coatings on substrate surfaces. Its core components include a coating rod, a flat coating platform, clamps for securing the substrate, and a mechanical system that drives the coating rod to move at a constant speed.
The difference between a wire bar coater and a gap-type wet film applicator.
The wire-wound drawdown bar directly quantifies the coating through the gap between wires, making it suitable for thin coating preparation with high precision, particularly for low-viscosity fluids. In contrast, the gap-type wet film applicator indirectly controls film thickness through the groove depth, with the actual coating thickness significantly influenced by material properties, making it more suitable for high-viscosity coatings and thick film preparation.
The difference between a wire-wound rod coater and an extrusion coating rod
This article primarily compares the technical differences between wire-wound and extrusion coating rods. Although they are interchangeable in most scenarios, there are subtle variations in liquid loading capacity due to their distinct groove principles.
How to Prepare Precise Film Layers Using a Laboratory Film Coating Machine
Precise film preparation can effectively eliminate human operational errors by rationally selecting applicators (wire rods or blades) that match the material's rheological properties and precisely controlling coating speed, environmental temperature and humidity, and substrate conditions.
Huinou Laboratory Automatic Film Coater: Bringing Simplicity and Precision Back to Coating Experiments.
The Huiniao Experimental Automatic Coating Machine addresses common operational pain points in material R&D through features such as snap-on wire rods, flip-top magnetic scrapers, servo motor drives, and a high-flatness work surface. These designs enhance cleaning convenience, reduce maintenance costs, and improve coating stability.