Spreader

The drawdown applicator creates a uniform wet film by scraping a liquid sample across a substrate with a metal blade, simulating the coating process of paints and inks. Its principle involves controlling the gap between the blade and the substrate to adjust the wet film thickness. It is used for quickly preparing test samples in the laboratory and is applied in the evaluation of coating properties such as printability, hiding power, and color uniformity.
Selection
When selecting a scraper applicator, it is necessary to consider the gap range corresponding to the sample viscosity, match the blade type to the substrate flatness, and commonly use stainless steel material for corrosion resistance. Manual models are suitable for routine inspection, while pneumatic models ensure stable pressure. Wet film thickness specifications should be selected according to testing standards, and an accompanying calibration certificate ensures measurement accuracy.

Terms

Standards

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 Gravure Printing Proofer in Water-based Ink Proofing and Pinhole Defect Evaluation
This article introduces how the gravure printability tester is used for water-based ink proofing and pinhole defect evaluation. Water-based inks are environmentally friendly but prone to tiny pinhole defects. The instrument enables standardized sample preparation and reduces human interference by controlling parameters such as cell depth and doctor blade angle.
Standard ink film preparation with a blade coater before tack testing of offset printing inks.
This article introduces the method of preparing a standard ink film using a blade coater before testing the tackiness of offset printing inks. It explains the principle of controlling ink film thickness by adjusting the blade gap and details the operational steps from securing the substrate and applying the ink to completing the coating process.
Study on the Dispersion Uniformity of Blade Coating Machines in High-Load Electrode Slurry Coating
This article investigates how to optimize the dispersion uniformity of coatings by adjusting process parameters when using a blade coater to handle high-load electrode slurries.
The wire bar coater with heating and vacuum adsorption is used for the preparation of perovskite solar cell layers.
This article introduces a new technique for preparing the light-absorbing layer of perovskite solar cells: a wire-bar coater with heating and vacuum adsorption capabilities.
Heating and blade coating of gel electrolyte films for zinc-ion batteries.
This article introduces the heating doctor-blade coating method for preparing gel electrolyte films in zinc-ion batteries. The method involves spreading a slurry onto a substrate using a doctor blade, followed by heating to evaporate the solvent and form a film.
Blade-coating preparation of hole transport layers for perovskite solar cells.
This article introduces the method of preparing the hole transport layer for perovskite solar cells using the doctor-blade coating technique. The doctor-blade coating method involves spreading the solution evenly on the substrate with a blade to form a thin film, making it suitable for large-scale production.
Preparation of composite films by coating mechanism for electrical performance experimental characterization
This article introduces the method of preparing composite films using a film coating machine and testing their electrical properties. The film coating machine evenly spreads the slurry with a blade, controlling thickness and uniformity. The preparation process includes raw material preparation, substrate treatment, coating, and curing.
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.
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.
Experimental Verification of Stroke Accuracy on Coating Thickness Repeatability for Desktop Automatic Film Applicators.
This article investigates the influence of the stroke accuracy of a desktop automatic coating machine on the repeatability of coating thickness. The experiment monitored the blade position deviation using high-precision sensors and measured the coating thickness, revealing that smaller stroke deviations lead to better repeatability in coating thickness.
Film applicator standardized preparation of test samples.
The film applicator is a crucial tool in fields such as coatings and inks for preparing test samples, ensuring uniform thickness and a smooth surface through standardized operations. The article introduces its scraping-based working principle and the selection between manual and automatic types.
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.
Copper nanowire and zinc oxide thin film preparation coater
The coating machine is a key device for preparing copper nanowires and zinc oxide thin films, which uniformly coats slurry onto a substrate through methods such as blade coating to form a thin film.