Doctor blade coating Rod

The wire-wound drawdown bar is a cylindrical rod wrapped with a specific diameter wire, which forms a wet film on a substrate through the drawdown process. The principle involves using the gap between the rod and the substrate to control the coating thickness, and it is used for testing coating thickness and evaluating uniformity in paints and inks. Applications include laboratory coating preparation and quality control.
Selection
When selecting a coating rod, consider the wire diameter corresponding to the wet film thickness, and determine the specifications according to the testing standards. Choose materials such as stainless steel or chrome-plated steel to ensure wear resistance. The rod length should match the width of the substrate, with uniform and defect-free surface winding. Adjust the operating speed based on the viscosity of the coating to ensure a smooth and even application.

Terms

Instruments

Using Metering Rod & doctor blade double Spreader mode, Spreader accuracy up to +/- 0.001mm, Spreader rate 5~ 200mm/s adjustable, fixed substrate by vacuum adsorption to ensure film uniformity and repRoducibility.

$ 2736.00

Spreader speed 5~ 180mm/s, Spreader area 400 * 300mm, using Metering Rod & doctor blade and vacuum adsorption system to ensure Spreader uniformity and Stability, can be customized automatic inking function.

$ 9755.00

Using Metering Rod & doctor blade dual Spreader method, Spreader accuracy is up to +/- 10μm, Film thickness range is 0-5000μm. Spreader rate and stroke are controlled by vacuum adsorption to fix the substrate, and the touch screen can effectively improve film repRoducibility and conformity.

$ 3462.00

Drawdown blade and bar two coating methods, the accuracy of +/- 3μm; Drawdown blade clamshell and new bar installation design for easy cleaning, improve efficiency; support speed 1-300mm/s stepless speed and application length free adjustment; Vacuum chuck function is suitable for soft substrates such as films.

$ 15081.00

Spreader speed 5-180mm/s adjustable, wire Rod Spreader accuracy +/- 0.001mm, using touch screen control and mechanical fixture to ensure stable and reliable Spreader process.

$ 2010.00

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

Spreader accuracy of +/- 0.003mm, Film thickness range of 0~ 10mm, equipped with automatic feeding system and vacuum adsorption, to achieve stable Spreader and efficient operation.

$ 8949.00

Spreader accuracy of +/- 0.001mm and +/- 0.003mm respectively, support 5~ 200mm/s stepless speed change and vacuum adsorption fixation, improve coating conformity.

$ 7141.00

Drawdown blade and bar two coating methods, with Vacuum chuck function, easy to handle soft substrate; application length and speed can be freely adjusted, film thickness control accuracy, clamshell design is easy to clean.

$ 4430.00

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

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

Spreader speed 5~ 200mm/s continuously variable speed, scraper Spreader accuracy +/- 0.003mm, support heating temperature RT +~ 180 ℃, baseplate heating method to ensure stable Spreader effect, improve experimental conformity.

$ 7658.00

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

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

With meyer Rod coating accuracy +/- 0.001mm and Blade Coating accuracy +/- 0.003mm, support Vacuum chuck and fixture fixing, coating table size 1440 * 1030mm, clamshell design is easy to clean.

$ 19438.00

Articles

The wire bar coater with heating and vacuum adsorption is used for the preparation of perovskite solar cell layers.
This article introduces a new technique for preparing the light-absorbing layer of perovskite solar cells: a wire-bar coater with heating and vacuum adsorption capabilities.
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.
Inventory of Laboratory Coating Instruments
Laboratory coating tools include gap coaters, wire rods, automatic coating machines, etc. What are the differences between them? This article will tell you!
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.