CATEGORIES

    Four-blade coater

    Overview Products Knowledge Standards Terms
    The four-edged applicator is a manual coating tool that uses four grooves of different depths to spread liquid onto a substrate, forming a wet film of uniform thickness. Its function is to simulate coating processes in the laboratory, used for testing the leveling, coverage, and drying properties of materials such as paints and inks. Applications include evaluating coating quality and comparing formulations for paper and plastic films.
    Selection
    When selecting a four-blade applicator, consider the substrate type and the viscosity of the coating liquid, and match the groove depth to control the wet film thickness. Prioritize stainless steel for durability, and choose the width based on the sample size. The operating environment requires a flat substrate surface, and the blade edge should be kept clean to avoid scratches. Validate coating uniformity by combining standard methods, making it suitable for routine quality inspection or research and development scenarios.
    Type
    Style
    Film width
    Max film thickness
    Precision
    Material
    Calibrated certificate

    Terms

    Four-sided coater

    Standards

    Active GB/T 30329.2-2026
    Printing technology - Colour and transparency of printing ink sets for four-colour printing - Part 2: Coldset web offset printing
    Active GB/T 45763-2025
    Fine ceramics—Test method for flexural strength of ceramic thin plates at room temperature—Three-point bending or four-point bending
    Active GB/T 33317-2016
    Plastics—Phenolic resins—Determination of hexamethylenetetramine content—Kjeldahl method,perchloric acid method and hydrochloric acid method
    Active GB/T 45331-2025
    ePTFE membrane for reinforcement of proton exchange membrane
    Active GB/T 23144-2023
    Paper and board—Determination of bending stiffness—General principles for two-point, three-point and four-point methods
    Active GB/T 27810-2011
    Binders for paints and varnishes - Gel permeation chromatography(GPC) - Tetrahydrofuran(THF) as eluent
    Active GB/T 23975-2009
    Determination of the quantity of tetrachlorophthalic anhydride in dye and pigment products
    Active GB/T 9758.4-1988
    Paints and varnishes--Determination of “soluble” metal content--Part 4:Determination of cadmium content--Flame atomic absorption spectrometric method and polarographic method

    Instruments

    HUXI 20030055 dissolving Impeller four-blade medium and high viscosity liquid stirring element
    HUXI 20030055 dissolving Impeller four-blade medium and high viscosity liquid stirring element

    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
    HUXI 20030001 Four-blade Impeller Stainless Steel Standard Impeller Paste DiaMeter 50mm
    HUXI 20030001 Four-blade Impeller Stainless Steel Standard Impeller Paste DiaMeter 50mm

    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
    HUXI 20030094 Four-Blade Impeller Stainless Steel Standard 50mm Slurry
    HUXI 20030094 Four-Blade Impeller Stainless Steel Standard 50mm Slurry

    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
    HUXI 20030037 Four-Blade Impeller Stainless Steel Standard 50mm Paste
    HUXI 20030037 Four-Blade Impeller Stainless Steel Standard 50mm Paste

    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
    HUXI 20030036 Four-Blade Impeller Stainless Steel Standard Sheet DiaMeter 100mm
    HUXI 20030036 Four-Blade Impeller Stainless Steel Standard Sheet DiaMeter 100mm

    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
    HUXI 20030052 dissolved Impeller stainless steel medium and high viscosity liquid stirring element
    HUXI 20030052 dissolved Impeller stainless steel medium and high viscosity liquid stirring element

    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
    HUXI 20030056 dissolving Impeller four-blade medium and high viscosity liquid stirring element
    HUXI 20030056 dissolving Impeller four-blade medium and high viscosity liquid stirring element

    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
    HUXI 20030057 dissolved Impeller 150mm stainless steel paddle
    HUXI 20030057 dissolved Impeller 150mm stainless steel paddle

    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
    HUXI 20030054 dissolving Impeller four-blade medium and high viscosity liquid stirring element
    HUXI 20030054 dissolving Impeller four-blade medium and high viscosity liquid stirring element

    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
    HUXI 20030051 dissolved Impeller four-blade medium and high viscosity liquid stirring element
    HUXI 20030051 dissolved Impeller four-blade medium and high viscosity liquid stirring element

    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
    HUXI 20030053 dissolving Impeller four-blade medium and high viscosity liquid stirring element
    HUXI 20030053 dissolving Impeller four-blade medium and high viscosity liquid stirring element

    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
    HUXI 20030038 Four-Blade Impeller Standard Stainless Steel 50mm Paste
    HUXI 20030038 Four-Blade Impeller Standard Stainless Steel 50mm Paste

    Made of stainless steel, slurry diaMeter 50mm, Rod length 500mm, medium and high speed mixing performance, suitable for medium and low viscosity liquid mixing, standard four blade design to ensure uniform and efficient mixing.

    $ 107.00
    HUXI 20030039 Four-Blade Impeller Standard Stainless Steel Slurry DiaMeter 100mm
    HUXI 20030039 Four-Blade Impeller Standard Stainless Steel Slurry DiaMeter 100mm

    Made of stainless steel, pulp diaMeter 100mm, Rod length 500mm, medium and high speed mixing performance, suitable for medium and low viscosity liquid mixing, standard four blade design to ensure uniform and efficient mixing.

    $ 112.00
    HUXI 20030046 Three hole Impeller stainless steel four blade stirring element
    HUXI 20030046 Three hole Impeller stainless steel four blade stirring element

    The four-blade design realizes gentle mixing, with a pulp blade diaMeter of 100mm and a Rod length of 500mm. It is suitable for medium and low speed operation, and the stainless steel material ensures durability.

    $ 106.00
    China KTQ-PJ Automatic Film Applicator drawdown blade adjustable width accessories, adjustable application width
    China KTQ-PJ Automatic Film Applicator drawdown blade adjustable width accessories, adjustable application width

    The application width can be adjusted freely, and the drawdown blade Coater can be adapted to meet different experimental testing needs and realize flexible film operation.

    $ 154.00

    Articles

    Resistance Tester Selection: Measurement Methods for Low Resistance and High Resistance
    This article introduces the selection method of resistance testers. Based on the range of the measured resistance, low resistance requires the four-wire Kelvin method, using constant current and voltage measurement to eliminate the influence of contact resistance; high resistance uses the voltage method to measure tiny currents, with attention to shielding and leakage prevention.
    Four-probe resistivity tester measures the sheet resistance of conductive polymer films.
    This article introduces the method of measuring the sheet resistance of conductive polymer films using a four-probe resistivity tester. Sheet resistance is an important parameter for evaluating the conductivity of films.
    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.
    Key points for selecting a multi-factor comprehensive test chamber with integrated temperature, humidity, vibration, and altitude systems
    The multi-factor comprehensive test chamber integrates four environmental stresses: temperature, humidity, vibration, and altitude (low pressure), used to simulate the reliability of products under complex environmental conditions.
    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.
    Principles, Differences, and Application Selection Guide for 4 Common Laboratory Coating Machines
    This article will delve into the working principles, technical distinctions, and typical applications of four core laboratory coating devices in laboratory settings.
    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.