Coating wet Rod

The coating wire rod is a metal rod with graduated markings that controls the wet film thickness through a scraping process. Its principle is based on the gap between the rod and the substrate, which determines the thickness of the retained coating. It is used in laboratories to prepare uniform coating samples and is suitable for testing the thickness of inks and coatings, as well as evaluating printability.
Selection
The selection of a coating applicator rod should match the target wet film thickness, and the gap should be calculated based on the rod diameter and wire diameter. The material of the rod body should be chosen according to the viscosity of the coating: hard stainless steel is suitable for high viscosity, while flexible wire-wound rods can be used for low viscosity. The flatness of the substrate affects the choice of rod type, and substrates with curved surfaces require specially designed curvature.

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

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

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

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

The formed pRoduction process ensures uniform film, provides 47 micron accurate wet film thickness, 304 stainless steel material is durable and easy to clean, suitable for a variety of Coating sample prepative.

$ 120.00

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

$ 178.00

304 stainless steel material, wet film thickness 8 μ m, application width 300mm, formed pRoduction process to ensure uniform coating and continuous wire.

$ 178.00

Equipped with a specific weight handle to achieve uniform pressure coating, no need for manual pressing; using a formed pRoduction process, the wet film thickness is controlled at 15 μm, and 304 stainless steel material ensures durability.

$ 120.00

The formed pRoduction process ensures uniform coating, wet film thickness 8μm, application width 250mm, 304 stainless steel material is durable and easy to clean.

$ 157.00

The formed pRoduction process ensures uniform coating, the wet film thickness is precisely controlled at 9 microns, and three lengths of 250mm, 400mm and 60mm are available.

$ 120.00

Adopting a wire-wound process, with a wet film thickness of 9.1 microns and a coating width of 300mm, it is suitable for ultra-thin coating requirements, offering high precision and ease of operation.

$ 167.00

Using a formed pRoduction process, the wet film thickness is 100 microns, the application width is 60 mm, and the stainless steel material ensures durability and precise coating control.

$ 120.00

The wire-wound process can pRoduce a wet film thickness of 96 μm with a coating width of up to 300 mm, utilizing stainless steel material to ensure durability and precise coating control.

$ 167.00

Formed pRoduction process, wet film thickness 131μm, K shape design at the bottom of the cogging, large tooth spacing, suitable for high viscosity Coating, better leveling.

$ 178.00

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.
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.
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.
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.