Biological Spreader

Biological Coaters utilize mechanical blades or wire-wound rods to form a uniform liquid film on a substrate surface, controlling coating thickness through fluid shear forces and surface tension. They are used in laboratories for preparing microbial culture media, film coatings, and functional material films, ensuring consistent sample thickness and experimental reproducibility.
Selection
When selecting, consider coating precision and substrate compatibility. Stainless steel material is suitable for corrosive liquids, and adjustable gap models meet multi-thickness requirements. Manual models are suitable for routine experiments, while automatic models enhance batch stability. Verify the flatness of the blade and uniformity of spring pressure, and use supporting substrate fixation devices to prevent displacement.

Terms

Instruments

Spreader speed 5-180mm/s adjustable, wire Rod Spreader accuracy +/- 0.001mm, using touch screen control and mechanical fixture to ensure stable and reliable Spreader process.

$ 2010.00

Spreader accuracy of +/- 0.003mm, Spreader thickness range of 0.2~ 10mm, bar and drawdown blade double coating method, support stepless speed and stable pressure control, to ensure uniform and stable Spreader.

$ 2897.00

Spreader wet film thickness 120 μ m, groove design is not easy to block and easy to clean, Spreader accuracy is high, support manual Spreader and Automatic Film Applicator with use.

$ 99.00

Spreader wet film thickness of 200 microns, groove design is not easy to block and easy to clean, to ensure the uniformity and accuracy of Spreader, support laboratory manual or Automatic Film Applicator.

$ 114.00

Using Metering Rod & doctor blade dual Spreader method, Spreader accuracy is up to +/- 10μm, Film thickness range is 0-5000μm. Spreader rate and stroke are controlled by vacuum adsorption to fix the substrate, and the touch screen can effectively improve film repRoducibility and conformity.

$ 3462.00

Spreader accuracy of +/- 0.003mm, Spreader Film thickness range of 0~ 10mm, using stepless variable speed control, vacuum adsorption and removable scraper design to ensure uniform and stable Spreader, improve experimental repRoducibility.

$ 4430.00

Using formed design, film Film thickness of 270 microns, Spreader width of 25cm, wear resistant stainless steel material, suitable for high viscosity sample preparation, accuracy better than traditional Film Applicator.

$ 157.00

Spreader accuracy of +/- 0.003mm, Spreader Film thickness range of 0~ 10mm, using servo motor drive and vacuum adsorption system, support stepless variable speed and a variety of customized functions, improve Spreader Stability and efficiency.

$ 5883.00

Spreader rate 5~ 180mm/s adjustable, Spreader accuracy +/- 1μm, equipped with vacuum adsorption and heating function to 200 ℃, support automatic feeding system, improve film repRoducibility and operation convenience.

$ 7335.00

Spreader accuracy of +/- 0.003mm, Spreader Film thickness 0~ 10mm adjustable, vacuum adsorption fixed substrate, touch screen control to achieve stepless speed change, improve film repRoducibility and ease of operation.

$ 5237.00

The split drawdown blade is used to achieve +/- 10 μm Spreader accuracy, Spreader thickness range is 0~ 5000 μm, support 5~ 200mm/s stepless speed, Vacuum chuck is used to ensure the stability of the substrate and improve the experimental conformity.

$ 2494.00

Spreader speed 5-180mm/s stepless adjustable, Spreader accuracy of +/- 1μm, using integrated scraper and bar double Spreader mode, with pneumatic feeding system to achieve accurate and stable coating prepative.

$ 4914.00

Effective Spreader width 300mm, suitable for all kinds of scraper type Film Applicators, to ensure the uniformity of Spreader, improve the film accuracy and conformity in the experiment or pRoduction.

$ 235.00

Adopt imported accessories to ensure Stability, Spreader speed 5-200mm/s adjustable, vacuum adsorption fixed substrate, scraper Spreader accuracy of +/- 10μm, support heating temperature to 180 ℃ to improve film mass.

$ 3365.00

High Accuracy modular Spreader station structure, Spreader thickness range of 0.01mm to 2mm, coating speed 2-4.5 m/min adjustable, support forward and reverse stepless variable speed and automatic winding, gap adjustment Graduation up to 0.001mm, easy to accurately control the Spreader process.

$ 5399.00

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.
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.