Coating Application Wire Rod

The coating applicator rod is a coating tool with specific grooves engraved on the surface of a metal rod. The principle involves placing the coating material into the grooves and pushing it evenly across the substrate. The grooves control the transfer amount of the coating, forming a uniform wet film. Its function is to simulate processes such as spraying and roller coating in the laboratory, and it is used to test the hiding power, leveling, and other properties of coatings. Applications include paint research and development as well as quality control.
Selection
The selection of a coating applicator rod requires consideration of the groove size corresponding to the wet film thickness, with common specifications ranging from 25 to 200 μm. The groove shape should be chosen based on the viscosity of the coating, with circular grooves being suitable for high-viscosity coatings. The flatness of the substrate influences the choice of rod material; stainless steel rods are recommended for rough surfaces. Experimental precision requirements determine the machining tolerance of the rod, with a conventional tolerance of ±2 μm. It is also important to ensure that the rod length exceeds the width of the substrate.

Terms

Standards

Instruments

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

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

Made by wire-wound process, wet film thickness 50μm, application width 420mm, uniform groove is formed by precision stainless steel wire winding to achieve accurate control of Coating thickness.

$ 199.00

Using wire-wound process, wet film thickness 60μm, application width 220mm, through precision stainless steel wire winding to form a uniform groove, precise control of Coating thickness.

$ 183.00

The wire-wound process ensures uniform coating application, with precise control of the wet film thickness at 57.2μm. The stainless steel material provides durability and easy-to-clean characteristics.

$ 167.00

Using wire-wound process, wet film thickness 60μm, application width 420mm, through precision stainless steel wire winding to form a uniform groove, can control the Coating thickness and ensure Repeatability.

$ 199.00

Coating thickness is controlled by wire-wound structure, wet film thickness up to 80μm, application width 420mm, uniform groove is formed by precision stainless steel wire winding to ensure Spreader Repeatability and accuracy.

$ 199.00

Using formed process, wet film thickness 42 μ m, application width 250mm, easy to clean and continuous wire, effectively improve the uniformity and ease of operation of Spreader.

$ 157.00

Using a wire-wound coating process, with a wet film thickness of 32.0 μm and a coating width of 300 mm, it is suitable for substrates prone to curling and convexity, enabling uniform wet film coating, with a wire diaMeter of 0.36 mm.

$ 167.00

Wire-wound process, wet film thickness 6μm, application width 140mm, stainless steel material to ensure durability and accurate Spreader effect, suitable for preparing uniform film samples.

$ 157.00

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

Film thickness 100.6μm, application width 30cm, stainless steel material, wear and corrosion resistance, suitable for high viscosity or high abrasion experiments, high accuracy and durability.

$ 160.00

The wire-wound process ensures uniform coating, with a precise wet film thickness control of 82.3μm. The stainless steel material is durable and easy to clean, and a coating width of 300mm is suitable for standard sample processing.

$ 167.00

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

It can prepare a wet film thickness of 13.7 microns, with a wire-wound design providing stable coating performance. The 9.52 mm diaMeter ensures easy operation, making it suitable for various paint application scenarios.

$ 167.00

Articles

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.
Laboratory Coating Machine - A Scientific Tool for Preparing Precise Coatings
The laboratory film coater is a specialized device that prepares uniform coatings on substrates through mechanical means, primarily categorized into types such as blade coaters, wire bar coaters, and spin coaters. This equipment consists of precision components including a coating platform, a blade assembly, a transmission system, and a control system, allowing for precise control over coating thickness.