Strip Wet Film Coater

The bar wet film applicator uses a grooved metal bar to scrape-coat on the substrate surface, forming a wet film layer of fixed thickness. It is used in laboratories to simulate printing and coating application processes, and to test material flowability and hiding power. During operation, the depth of the groove controls the wet film thickness, making it suitable for ink adhesion testing and coating uniformity evaluation.
Selection
When selecting, consider matching the substrate size to the length of the applicator, and determine the groove thickness specification according to the test standards. Stainless steel is preferred for metal materials to prevent corrosion, and the edges should be smooth and free of burrs. Narrow groove types are suitable for low-viscosity liquids, while wide grooves are suitable for high-viscosity slurries. Use with a palette knife to ensure uniform coating pressure.

Terms

Instruments

The device can precisely control the film thickness of the ink layer of the color strip, and the ink injection amount is 0.0012g, which is used for ink contrast and color concentration detection.

$ 173.00

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

Using wire-wound design, groove is formed by precision winding stainless steel wire, precise control of wet film thickness up to 120μm, application width 365mm, to ensure uniform coating and repeability.

$ 183.00

Coating thickness is controlled by wire-wound process, wet film thickness reaches 100μm, application width 365mm, uniform groove is formed by precision stainless steel wire winding to achieve accurate Spreader.

$ 183.00

Using scraping method to achieve 0.005-3mm wet film thickness, Spreader accuracy of +/- 5%, equipped with hot air circulation Oven and automatic constant tension control to ensure Spreader uniformity and Stability.

$ 40415.00

Precision drawing stainless steel wire winding manufacturing, groove pattern control wet film thickness accurate, repeatability, application width 420mm, closed winding structure is suitable for 4-120μm coating.

$ 199.00

Precision drawing stainless steel wire winding manufacturing, groove shape consistent, wet film thickness 50μm, application width 365mm, repeability Spreader surface coating.

$ 183.00

Precision drawing stainless steel wire winding manufacturing, groove control wet film thickness accurate, repeatability, closed winding Spreader thickness of 4 to 120 μ m, spiral winding up to 500 μ m, diaMeter 9.5mm total length 570mm.

$ 196.00

Precision drawing stainless steel wire winding manufacturing, groove shape consistent can accurately control the wet film thickness of 24 μ m, application width of 420mm, closed winding structure to ensure uniform coating, repeability.

$ 199.00

The four-sided design allows for the preparation of film thicknesses of 200μm, 400μm, 600μm, and 800μm. Made of stainless steel, it offers high coating precision, a compact size, and is suitable for various substrates and coatings with different pH levels.

$ 275.00

Wire-wound design, wet film thickness 118.9μm, diaMeter 9.5mm, stainless steel material, wear resistance and corrosion resistance, suitable for preparing specific film thickness wet-film.

$ 167.00

The precision drawing stainless steel wire winding process is used to form uniform grooves to control the Coating thickness, the wet film thickness is 80 μ m, and the application width is 365mm to ensure the accuracy and repeability of the Spreader.

$ 183.00

Made of stainless steel, the thickness is only 1.5mm, the range is 20~ 200μm, Division 20μm, the card design is convenient for quick measurement of wet-film Coating thickness on site.

$ 119.00

The mechanical compression spring device is not easy to damage, the accuracy is up to 0.5HW, the film thickness 0.4-6 mm workpiece can be detected, and various Hardness values such as Brinell Rockwell can be obtained through the conversion table.

$ 477.00

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.