Wet Film Coating Rod

The wet film coating rod is a metal rod with graduated markings, used to form a uniform wet film on a substrate by means of scraping. It controls the thickness of the coating through the grooves on the rod body, simulating the effects of spraying or roller coating in laboratory settings. It is employed to prepare standard samples for tests such as ink adhesion and coating opacity evaluation.
Selection
Select the rod material based on the viscosity of the material to be tested; use stainless steel rods for high viscosity. Determine the groove depth according to the testing standards, typically ranging from 25 to 200 μm. The flatness of the substrate influences the selection, with flexible rods suitable for curved substrates. Ensure no residue remains in the groove after cleaning, and avoid impacts on the engraved scale area during placement.

Terms

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

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

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 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

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

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

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

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

$ 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 is adopted, the wet film thickness is 42 μm, the application width is 60mm, the preparatory coating is uniform and the film thickness is accurately controllable, which is convenient for comparative analysis by conversion of dry-film thickness by Solid content.

$ 120.00

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 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

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

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.
Application of Wet Film Wheel Gauge in Continuous Measurement of Wet Film Thickness for Large-Area Coatings
The wet film wheel gauge is a mechanical tool used to measure the thickness of wet coatings, operating based on the geometric relationship of three coaxial disks (two parallel outer wheels on the sides and an eccentric inner wheel in the middle).
Operating specifications for on-site measurement of coating wet film thickness using wet film combs
This article introduces the operational standards for on-site measurement of coating wet film thickness using a wet film comb gauge. First, it explains the measurement principle of the wet film comb gauge, which involves estimating the thickness by observing the extent to which the teeth of the gauge are coated with the paint.
Selection of wet film thickness gauge range and accuracy requirements for comb teeth spacing.
When selecting a wet film thickness gauges, the key considerations are the measurement range and the accuracy of the comb teeth spacing. The range should cover the coating thickness with a slight margin to avoid being too small for measurement or too large, which could reduce resolution.
Wet film thickness gauge measures the wet film thickness of varnish.
The wet film thickness gauge is a mechanical tool used to measure the thickness of liquid varnish coatings. It operates by rolling the gauge so that the tips of its teeth contact the substrate and leave marks. The thickness value is then obtained by the operator reading the scale of the first tooth that becomes coated with the varnish.
Wet film applicator for applying color paint to a specified wet film thickness.
A wet film applicator is a laboratory tool used to apply a predetermined thickness of wet paint film onto a flat substrate, providing the foundation for subsequent dry film performance testing.
Operating Specifications and Result Interpretation of Paint Fineness Gauges
The fineness gauge is used to measure the dispersion of particles in paint. During operation, the sample should be applied to the groove under standard conditions, and a scraper is used to spread it evenly to form a wet film. The particle visibility is then observed under appropriate lighting, and the fineness value is read from the corresponding scale.
Application of Two-Step Method with Pre-Coating and Fine-Coating in Eliminating Bubble Defects for Dual-Blade Coater
The dual-blade coater employs a two-step method of pre-coating and precision coating to eliminate bubble defects during the coating process. In the pre-coating stage, high shear force is applied to break the bubbles in the slurry, causing them to rupture and rise to the surface. The precision coating stage then precisely controls the coating thickness, removing any remaining bubbles to form a uniform wet film.
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.
Key Points for Wet Film Thickness Control in the Preparation of Fluorocarbon Coatings for Photovoltaic Backsheets Using Automatic Film Coating Machines
This article introduces the key points of controlling wet film thickness in the preparation of fluorocarbon coatings for photovoltaic backsheets using an automatic coating machine. Wet film thickness directly affects the performance and uniformity of the coating after curing, making its control crucial.
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.
The correct method for using a wet film thickness gauge.
The wet film thickness gauge is used to measure the thickness of uncured coatings. It determines the value by reading the scale through contact with the wet film using a toothed structure, which is crucial for controlling dry film thickness and estimating material usage.
Control of Wet Film Thickness—Field Operation Comparison Between Wheel Gauge and Comb Gauge
This article compares two tools for measuring wet film thickness: the wheel gauge and the comb gauge. When selecting a tool, factors such as coating characteristics, application environment, and precision requirements must be considered. Additionally, proper operation and environmental influences should be taken into account to ensure coating quality.
Rapid Assessment of Paint Hiding Efficiency by Minimum Wet Film Thickness Method
This article introduces a method for rapidly evaluating the hiding efficiency of coatings—the minimum wet film thickness method. Traditional methods are time-consuming, whereas this approach quantifies hiding power by measuring the minimum wet film thickness required for the coating to completely hide the substrate, making it simple and quick to operate.
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.