Bird-Type Wet Film Coater

The bird-type wet film applicator uses a grooved metal rod that rolls over the substrate surface, with the grooves holding the coating to form a uniform wet film. It is used in laboratories to simulate the blade coating process and test the spreading performance of coatings on materials such as paper and plastic. During operation, the substrate is fixed in place, and the applicator rod is rolled at a constant speed to complete the film formation.
Selection
When selecting, consider matching the flatness of the substrate with the length of the coating rod, where the groove depth corresponds to the desired wet film thickness, typically ranging from 25 to 250 microns. Stainless steel material is resistant to solvent corrosion, while aluminum is suitable for water-based coatings. It is necessary to verify the straightness of the coating rod and ensure compatibility with coatings within the applicable viscosity range.

Terms

Instruments

Made of medical grade stainless steel, Hardness up to HRC55, wet film thickness 75 μm, accuracy control within +/- 2 μm, suitable for a variety of flat surface Spreader applications.

$ 791.00

Made of DAIDO 440C medical grade stainless steel, Hardness reaches HRC55, wet film thickness 125μm, application width 75mm, accuracy +/- 2μm, Spreader can be uniform on flat surface without adjustment.

$ 791.00

Using DAIDO 440C medical grade stainless steel material, after sub-zero vacuum hardening to HRC55 Hardness, application width 75mm, wet film thickness 50μm, overall accuracy +/- 2μm, suitable for smooth flat surface Spreader operation.

$ 791.00

The 4-sided paint design can be prepared with four different thickness wet-film, application width 75mm, accuracy +/- 3μm, corrosion-resistant stainless steel material, easy to clean and durable.

$ 1268.00

Made of stainless steel, excellent corrosion resistance; provides 500μm fixed wet film thickness and 100mm application width to ensure Spreader uniformity and precise thickness control, suitable for Spreader sample preparation of flat substrates.

$ 146.00

Made of DAIDO 440C material, wet film thickness 150μm, application width 75mm, accuracy of +/- 2μm, suitable for a variety of smooth flat surfaces without adjustment.

$ 791.00

Using DAIDO 440C medical grade stainless steel material, after sub-zero vacuum hardening to HRC55 Hardness, wet film thickness 100μm, application width 75mm, accuracy control within +/- 2μm, suitable for a variety of smooth plane.

$ 791.00

Medical grade stainless steel material, wet film thickness 200μm, accuracy +/- 2μm, suitable for a variety of smooth flat surface, simple operation without adjustment.

$ 791.00

High-grade stainless steel material, acid and alkali erosion and durable; 50/100/150/200μm four wet film thickness optional, application width 100mm, suitable for a variety of Coatings and solid substrates, easy to clean.

$ 1430.00

4-Sided design can simultaneously Spreader four different thicknesses, wet film thickness range of 50-200μm, application width 150mm, accuracy of +/- 3μm, stainless steel corrosion resistance easy to clean.

$ 1531.00

Stainless steel corrosion resistance, can be applied on a flat substrate specific thickness film, wet film thickness 300μm, application width 100mm, to ensure uniform Spreader and accurate thickness control.

$ 146.00

Roller type design, range 0~ 500μm, stainless steel material to ensure durability, suitable for on-site rapid measurement wet film thickness, in line with a number of execution standards.

$ 146.00

Application width 500mm, wet film thickness 0.005-3mm adjustable, using servo drive and PLC control, with automatic tension and correction function, suitable for a variety of coils and Coating types.

$ 24279.00

Wet film thickness adjustment range 0.005-3mm, Spreader accuracy +/- 5%, using servo drive and PLC control to achieve 1-10m/min adjustable coating speed, with automatic tension control and hot air circulation oven.

$ 21051.00

The single gap design is easy to clean, the four painted surfaces can be prepared with four different thicknesses, the application width is 50mm, the accuracy is +/- 3μm, and the acid and alkali corrosion resistance service life is long.

$ 1177.00

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.
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.
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.