Wet Film Applicator Rod

The wet film applicator is a coating tool that controls the transfer amount of coating material through grooves on the rod, forming a uniform wet film on the substrate. It is used in laboratories to simulate the blade coating process, test the leveling and hiding power of coatings, and is suitable for controlling the coating thickness of inks and paints.
Selection
The selection of a wet film applicator should consider the substrate roughness: use a fine-grooved bar for smooth surfaces. Choose the groove depth based on the paint viscosity, with deep grooves for high-viscosity paints. Match the bar number to the target wet film thickness, typically in the range of 25–200 μm. Stainless steel material is preferred for its resistance to solvent corrosion.

Terms

Instruments

Wire-wound structure ensures 0.1 micron High Accuracy, wet film thickness 50.3 μm, stainless steel material is durable and easy to clean, and the wide-Rod Film Applicator achieves uniform coating.

$ 160.00

Formed to achieve 35 micron wet film thickness, uniform film and good repRoducibility, 304 stainless steel material to ensure durable and easy to clean.

$ 120.00

Using stainless steel material, application width 300mm, wet film thickness 77.7μm, film accuracy of 0.1 micron to ensure uniform film.

$ 160.00

A groove control film is formed on the smooth Rod body by extrusion process. The wear-resistant stainless steel material is not easy to break the wire and is easy to clean. The wet film thickness is 105.2 μ m and the application width is 300mm.

$ 167.00

Using wire-wound stainless steel main Rod structure, wet film thickness 91.4 μ m, application width 300mm, through the formed process to achieve accurate Spreader, easy to operate.

$ 160.00

The wet film thickness is 22.9 microns, the application width is 300mm, the stainless steel material is used, the forming Rod is processed by extrusion process, the continuous wire is easy to clean, and the wire-wound drawdown bar is widely used based on traditional principles.

$ 186.00

The formed pRoduction process ensures uniform film, wet film thickness of 110μm, total length 250mm with 250mm application width, 304 stainless steel material provides durability and accurate Spreader effect.

$ 157.00

Made of wear-resistant stainless steel, the service life is more than 6 months. The wet film thickness is 43.4 μm, the film accuracy is 0.1 μm, and three diaMeters of 6.35mm, 9.52mm and 12.7mm are provided to ensure the consistent film effect.

$ 167.00

Spreader wet film thickness 120 μ m, groove design is not easy to block and easy to clean, Spreader accuracy is high, support manual Spreader and Automatic Film Applicator with use.

$ 99.00

Smooth steel bar design, no wire-wound, wet film thickness 0 μ m, diaMeter 12.7mm, total length 400mm, suitable for machine Spreader regulation, to ensure uniform and accurate film.

$ 167.00

Using 180 * 480mm size, with wire Rod or Film Applicator scraping ink, is conducive to the film flat and effective, improve film mass.

$ 122.00

Using formed pRoduction process, wet film thickness 6μm, accuracy of 0.5 microns, application width 250mm, material is 304 stainless steel, easy to clean and no worry of broken wire.

$ 157.00

Spreader wet film thickness of 200 microns, groove design is not easy to block and easy to clean, to ensure the uniformity and accuracy of Spreader, support laboratory manual or Automatic Film Applicator.

$ 114.00

Spreader formed process to ensure uniform, wet film thickness 36.6μm, application width 300mm, suitable for accurate film thickness control, the total length of 400mm easy to operate.

$ 167.00

Wire-wound process, wet film thickness 77.7μm, film accuracy of 0.1 micron, providing uniform and flat film effect and high repRoducibility, support customized services.

$ 160.00

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.
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.
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.
Wire rod Applicator: Principles, Applications, and Selection Guide - A Precision Coating Tool
This article provides a detailed introduction to the working principles of a Wire rod Applicator, including the mechanism by which it controls wet film thickness through the gap between stainless steel wires. It elaborates on its wide range of applications in fields such as coatings, inks, and lithium batteries, and summarizes its technical advantages, including precise control and ease of operation.