Knife Coating Tester

The drawdown Coater uses a motor to drive a blade to move uniformly across the substrate surface, creating a wet film with controllable thickness. It is used for testing the coating uniformity and evaluating the hiding power of paints and inks, simulating actual coating processes in laboratory settings.
Selection
When selecting, consider matching the substrate size to the scraper width, ensure the thickness range covers the test samples, and note that motor stability affects repeatability. Additional features, such as temperature control, should be configured based on actual needs, and the material's corrosion resistance should be compatible with commonly used solvents.

Terms

Instruments

The high-toughness knife body material enhances the strength of use. The log handle is designed with an open bottle cap and a hanging hole. The total length of the knife is 320mm and the length of the knife is 200mm. The humanized design is easy to operate.

$ 81.00

The high-toughness knife body material is used to improve the use strength. The log handle is designed with the function of opening the bottle cap. The total length of the knife body is 485mm and the length of the knife is 365mm. The humanized hanging hole is easy to store.

$ 84.00

The high-toughness knife body material is used to improve the strength of use. The log handle is designed with the function of opening the bottle cap. The total length of the knife is 190mm and the length of the knife is 95mm. The humanized hanging hole is easy to store.

$ 77.00

The high-toughness knife body enhances the strength of use, the log handle with open bottle cap and hanging hole is designed to be user-friendly, and the total length of the knife is 290mm and the length of the knife is 170mm to meet a variety of ink adjustment needs.

$ 80.00

The high-toughness knife body material is used to improve the use strength. The log handle is designed with an open bottle cap and a hanging hole. The total length of the knife is 194mm, and the width of the knife is 114mm. The 19mm specification is accurate.

$ 77.00

The high-toughness knife body material is used to improve the strength of use. The log handle is designed with hanging holes and bottle opening functions. The total length of the knife is 205mm and the length of the knife is 105mm. The humanized design is easy to operate.

$ 78.00

The high-toughness knife body improves the use strength, the log handle is designed with the function of opening the bottle cap, the total length is 235mm, and the knife length is 125mm. The tail hanging hole is easy to store.

$ 79.00

High toughness knife body material to improve the use of strength, log handle with open cap and hanging hole design user-friendly, total length of 350mm knife length 230mm to meet a variety of ink needs.

$ 81.00

Using high toughness knife body material, total length 242mm, knife length 142mm, log handle with bottle cap and hanging hole design, improve the use of strength and easy operation.

$ 78.00

The high-toughness knife body material enhances the strength of use. The log handle with bottle opening cap and hanging hole design is more user-friendly. The total length is 265mm and the knife length is 145mm. The specifications are practical.

$ 79.00

The high toughness knife body design enhances the use strength, the log handle is equipped with bottle opening function and hanging hole, the total length is 415mm and the knife length is 295mm, which is suitable for the preparation of paint inks.

$ 83.00

Adopt drawdown Bar & Blade double coating method, Spreader accuracy up to +/- 0.003mm, heating Temperature range RT +~ 180 ℃, equipped with air knife function, ensure Spreader uniform and stable.

$ 3785.00

The high toughness knife body enhances the use strength, the log handle feels comfortable to hold, the tail is integrated with the function of opening the bottle cap and is equipped with a hanging hole, and the total length of the knife is 370mm and the length is 250mm.

$ 82.00

It adopts wear-resistant inks and thickened steel knife design, is equipped with paper cutting guide ruler and paper pressing anti-skid function, and the sampling size is 380 * 300mm to ensure accurate sampling and stable operation.

$ 283.00

The length of the stainless steel blade is 100mm, with a wooden handle, the total length is 200mm, which is rust-proof, durable and comfortable to operate.

$ 77.00

Articles

How should one choose between the blade coating method and the spin coating method for perovskite film deposition experiments?
In the fabrication of perovskite solar cells, spin coating and blade coating are two commonly used film deposition methods, each with its applicable scenarios.
Laboratory blade coating machine is used for analyzing the film-forming characteristics of high-viscosity slurries.
This article analyzes the characteristics of a laboratory doctor blade coater for forming films from high-viscosity slurries. It focuses on the impact of slurry rheological properties on film formation quality.
Analysis of Common Defects in Laboratory Coating Machine Blade Coating and Adjustment Methods for Process Parameters
This article introduces common defects in the blade coating process of laboratory coaters, such as streaks, orange peel, bubbles, uneven thickness, and missed coating. It analyzes the causes of these issues, which are primarily related to material properties, operating parameters, and environmental factors.
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.
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.
Heating coating machine is used for the doctor-blade coating of gel electrolyte films in zinc-ion batteries.
This article introduces the blade coating process for preparing gel electrolyte films for zinc-ion batteries using a heated coating mechanism. By controlling parameters such as temperature, coating speed, and gap height, this method enables the fabrication of films with uniform thickness and smooth surfaces.
The polymer film is formed by blade coating on a glass substrate using a film applicator.
This article introduces the technique of using a film applicator to doctor-blade polymer films onto glass substrates.
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.
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.
Scraper Fineness Gauge for Determining the Fineness of Paste Inks
The Scraper Fineness Gauge is used to measure the dispersion degree of pigment particles in products such as paste inks. Its principle involves scraping a film on a scraper plate with wedge-shaped grooves and observing the scale at which particles appear to assess the fineness, with the result expressed in micrometers.
Film Coating Machine vs. Spray Gun: The Impact of Different Coating Methods on Coating Performance Evaluation
This article compares two laboratory film preparation methods: the film applicator and the spray gun. The film applicator can produce coatings with uniform thickness and high reproducibility through blade coating, making it suitable for precise formulation studies. The spray gun simulates actual spraying, but the film thickness uniformity is poorer, and the surface may be rougher.
Application of Laboratory Coating Machines in Textile Coating
A laboratory film applicator is a precision instrument used in textile coating research and development as well as quality control. It creates uniform wet films on substrates through mechanical coating. Primarily designed for small-scale sample preparation, it assists researchers in optimizing coating formulations and process parameters.
The importance of maintaining a constant speed when using a wet film applicator for coating.
When using a wet film applicator, maintaining a constant speed during the scraping process is crucial for coating uniformity. The scraping speed directly affects the wet film thickness, and fluctuations in speed can lead to defects such as streaks and uneven thickness, compromising the repeatability and accuracy of experimental results.