Four-blade Film Applicator

The four-sided blade film applicator spreads a coating material onto a substrate by scraping with four adjustable blades, forming a uniform wet film. The blade angle and gap control the coating thickness, making it suitable for preparing test samples in laboratory settings. It is used for evaluating the coating performance of inks and paints on materials such as paper and plastic.
Selection
Select the blade material based on the substrate surface roughness: stainless steel is suitable for conventional samples, while carbide is used for highly abrasive materials. Choose the gap adjustment accuracy according to the coating thickness range, and consider matching the sample size with the coating width. For fluids with high viscosity, opt for a reinforced fixed structure to prevent blade deviation during scraping.

Terms

Instruments

The four-blade structure makes the mixed medium flow up and down radially, forming strong turbulence and high shear force, which can crush the particles in the liquid, the diaMeter of the slurry sheet is 80mm, and the Rod length is 350mm, which is suitable for stirring medium and high viscosity liquids.

$ 119.00

Made of stainless steel, with a diaMeter of 50mm and a Rod length of 400mm, the standard four-blade design is suitable for medium and low viscosity liquids, and the mixing effect is stable and uniform at medium and high speeds.

$ 101.00

Made of stainless steel, the diaMeter of the slurry is 50mm, the Rod length is 350mm, and the medium and high speed stirring performance is stable, which is suitable for mixing operations of various medium and low viscosity liquids.

$ 99.00

Made of stainless steel, the diaMeter of the slurry is 50mm, the Rod length is 500mm, and the medium and high speed mixing performance is stable, which is suitable for uniform mixing of medium and low viscosity.

$ 106.00

With bar and Drawdown blade two coating methods, coating speed 1-300mm/s stepless speed regulation, Blade Coating thickness 0.1-10 mm, using clamshell design for easy cleaning, equipped with High Accuracy Film Applicator to ensure Spreader uniformity.

$ 5237.00

The four-blade structure makes the mixed medium flow radially up and down, forming strong turbulence and high shear force. The diaMeter of the slurry is 40mm, which is suitable for stirring medium and high viscosity liquids.

$ 96.00

Made of stainless steel, the diaMeter of the slurry is 100mm, the Rod length is 400mm, the medium and high speed mixing performance is stable, suitable for uniform mixing of medium and low viscosity liquids, and the structure is sturdy and durable.

$ 107.00

The four-blade structure makes the mixed medium flow radially up and down, forming strong turbulence and high shear force. The diaMeter of the slurry is 120mm, which is suitable for stirring medium and high viscosity liquids.

$ 128.00

The four-blade structure makes the mixed medium flow radially up and down, forming strong turbulence and high shear force. The diaMeter of the 150mm paddle is suitable for medium and high viscosity liquids, which can effectively crush the particles in the liquid.

$ 135.00

The four-blade structure makes the mixed medium flow radially up and down, forming strong turbulence and high shear force. The diaMeter of the slurry is 80mm, which is suitable for medium and high viscosity liquids and can effectively crush the particles in the liquid.

$ 109.00

The four-blade structure makes the mixed medium flow up and down radially, forming strong turbulence and high shear force, which can crush the particles in the liquid, suitable for medium and high viscosity liquids, the diaMeter of the slurry is 30mm, and the Rod length is 350mm.

$ 94.00

The four-blade structure makes the mixed medium flow radially, forming strong turbulence and high shear force, which can crush the particles in the liquid, the diaMeter of the slurry sheet is 50mm, and the Rod length is 350mm, which is suitable for stirring medium and high viscosity liquids.

$ 106.00

Adopt drawdown Bar & Blade heating Vacuum chuck four-in-one function, coating speed 5~ 200mm/s adjustable, Spreader thickness range 0.001~ 10mm, equipped with automatic feeding system and Vacuum chuck fixed to ensure uniform and stable film.

$ 7335.00

Adopting drawdown Bar & Blade heating Vacuum chuck four-in-one design, Spreader accuracy is up to +/- 0.005mm, and the rate is adjustable from 5 to 180mm/s. Spreader is uniform and stable by controlling speed and pressure.

$ 6205.00

Servo motor to ensure stable operation, film accuracy of +/- 0.003mm, support 1~ 300mm/s stepless speed regulation and Vacuum chuck fixed, clamshell drawdown blade for quick cleaning and maintenance.

$ 4108.00

Articles

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.
Alignment Accuracy Control Method for Four-Sided Preparator When Used with Automatic Coating Machine
This article explores the alignment accuracy control when using a four-sided preparator in conjunction with an automatic coating machine. Alignment accuracy directly affects the uniformity of the coating and the reliability of detection.
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.
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 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.
The difference between a wire-wound rod coater and an extrusion coating rod
This article primarily compares the technical differences between wire-wound and extrusion coating rods. Although they are interchangeable in most scenarios, there are subtle variations in liquid loading capacity due to their distinct groove principles.
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.