Coating Application Bar

The coating rod is a metal rod with specific grooves, used to form a uniform wet film on the substrate surface through a scraping method. The grooves on the rod control the amount of coating transferred, making it suitable for simulating the coating process in laboratories and testing the leveling and hiding power of coatings. It is applicable for the preparation of films from liquid materials such as inks and paints.
Selection
Select the groove depth based on the viscosity of the material to be tested, with common specifications ranging from 10 to 200 μm. Use a deep groove rod for high-viscosity materials and a shallow groove rod for low-viscosity materials. Determine the rod length according to the width of the substrate, typically 2–5 cm wider than the sample. Consider the material's corrosiveness to choose between stainless steel or chrome-plated materials. Use a rigid rod for flat substrates and a flexible rod for flexible substrates.

Terms

Standards

Instruments

Using formed pRoduction process, wet film thickness 76 μ m, application width 250mm, can be used with a handle to meet the needs of accurate Spreader.

$ 157.00

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

Spreader 13 micron wet film thickness, application width up to 300mm, 304 stainless steel for durability and precise coating control.

$ 178.00

Adopt bar coating method, coating speed 1~ 300mm/s stepless speed regulation, bar accuracy +/- 0.001mm, equipped with High Accuracy imported bar and Glass table, support free adjustment of application length, suitable for uniform film of various substrates.

$ 1848.00

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

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

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 formed pRoduction process, the wet film thickness is 52 microns, the application width is 300 mm, and the stainless steel material ensures durability and easy cleaning, suitable for hand-held operation.

$ 178.00

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

Driven by servo motor, coating speed 1~ 300mm/s stepless speed regulation, bar accuracy +/- 0.001mm, equipped with High Accuracy imported bar and Glass table, support free adjustment of application length, suitable for a variety of substrate films.

$ 2171.00

Wet film thickness 25 µm, application width up to 2000mm, 304 stainless steel treated by Eletroplating process to ensure Spreader uniformity and durability.

$ 477.00

The precision drawing stainless steel wire winding process is used to form uniform grooves to control the Coating thickness, the wet film thickness reaches 120μm, and the application width is 220mm to ensure the accuracy and repeatability of the coating.

$ 183.00

Wire-wound process, wet film thickness 80μm, application width 220mm, through precision winding to form a uniform groove, can control the Coating thickness, suitable for a variety of substrates.

$ 183.00

Precision drawing stainless steel wire winding manufacturing, forming a uniform groove to control the wet film thickness, application width 220mm, closed winding design is suitable for 4-120μm coating.

$ 183.00

Adopt bar coating method, coating speed 1~ 300mm/s stepless speed regulation, film accuracy +/- 0.001mm, equipped with High Accuracy imported bar and Glass table, support application length and speed free adjustment, suitable for a variety of substrate film.

$ 1687.00

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.
Testing principle of the mandrel bending method for paint film flexibility tester
The shaft-rod bending method is a common technique for testing the flexibility of paint films. It involves bending a test panel coated with the paint film over shafts of different diameters to simulate the deformation of the coating under stress.
Paint Flexibility Tester for Measuring Bending Adaptability
The coating flexibility tester is a device used to assess whether a coating cracks or peels when bent. During testing, the coated sample is bent around mandrels of different diameters, and the surface condition is examined. The flexibility is evaluated based on the smallest mandrel diameter at which no cracking occurs.
Cone Bend Test Evaluates the Ultimate Deformation of High-Elasticity Coatings
This article introduces the use of a conical mandrel bend test to evaluate the ultimate deformation capacity of highly elastic coatings. The test involves bending a coated sample around a conical mandrel of specific diameters and observing the minimum mandrel diameter at which the coating cracks or peels off, thereby assessing the material's ability to withstand deformation.
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.
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.
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.
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.