Rubber powder test sieve

What is a rubber powder test sieve

Rubber powder test sieve is a laboratory device used to analyze and screen the particle size distribution of rubber powder. It usually consists of a set of standard sieves that separate rubber powder by particle size through vibration or manual operation. It plays a key role in the production, recycling and quality control of rubber products.

Video of rubber powder test sieve

What is the working principle of rubber powder test sieve?

1️⃣ Vibration source drive: The motor or electromagnetic vibrator generates high-frequency vibration to drive the sieve body to vibrate.

2️⃣ Material diffusion: After the rubber powder is evenly put into the sieve, it diffuses along the sieve surface under the action of vibration force.

3️⃣ Particle classification:

Fine particles pass through the sieve holes and enter the lower sieve.

Large particles remain in the upper layer and continue to vibrate until discharged.

4️⃣ Final screening: The rubber powder is classified through sieves of different mesh sizes to obtain the particle size that meets the requirements.

Types of rubber powder test sieves

Classification by vibration mode

Type	Picture	Features	Scenario
Mechanical vibrating screen		Produces vibration through an eccentric block driven by a motor; vibration amplitude and frequency are adjustable	Suitable for most rubber powder screening
Electromagnetic vibrating screen		Produces high-frequency vibration through an electromagnetic vibrator; high vibration frequency, low energy consumption, low noise	Suitable for fine screening
Ultrasonic vibrating screen		Combines ultrasonic technology to prevent screen clogging	Suitable for ultrafine powder screening

Classification by screening method

Type	Picture	Feature	Scenario
Vibrating screen		Screening through vibration	Suitable for most rubber powder screening
Airflow screen		Blowing up the powder through airflow to achieve screening	Suitable for ultra-fine powder screening to prevent screen clogging
Rotary screen		Screening through screen frame rotation	Suitable for rubber powder screening with high viscosity

What are the advantages of rubber powder test sieve?

1、High-precision screening: using standard test sieve, it can be screened to 200 mesh (or even finer), suitable for fine rubber powder screening to ensure uniform particle size of rubber powder.

2、Multi-layer screen design: usually equipped with 2-5 layers of screen, which can complete multi-level screening at one time to improve efficiency.

3、Diverse screen materials: common materials include stainless steel, nylon mesh, etc., and the appropriate screen can be selected according to the characteristics of rubber powder.

4、Vibration screening technology: electromagnetic vibration or mechanical vibration is mostly used to improve screening efficiency and accuracy.

Common mesh and particle size comparison table of rubber powder test sieve

Mesh number (mesh)	Particle size (μm)	Applicable range
10 mesh	2000μm	Large particle rubber powder, suitable for coarse screening
20 mesh	850μm	Applicable for primary screening, removing large particle impurities
40 mesh	425μm	Applicable for general rubber powder classification
60 mesh	250μm	Fine rubber powder, suitable for recycled rubber manufacturing
80 mesh	180μm	Applicable for fine rubber powder, widely used in rubber products
100 mesh	150μm	Applicable for high-precision rubber powder screening
200 mesh	75μm	Ultrafine rubber powder, suitable for precision rubber filler
300 mesh	50μm	Ultrafine rubber powder, suitable for special purposes, such as rubber plastic composite materials

Recommended mesh size for rubber powder test sieves

Coarse sieve (10-20 mesh): suitable for primary processing or low precision requirements, such as primary screening of waste tire recycling.

Medium sieve (30-50 mesh): suitable for most industrial uses, such as rubber particle recycling.

Fine sieve (60-200 mesh): used for fine processing or high value-added products, such as rubber modifiers.

Ultrafine sieve (>200 mesh): laboratory research or high-end applications, such as dispersion testing of rubber micropowder in polymers.

Specific recommended examples of rubber powder test sieves

Purpose	Recommended mesh	Aperture range	Description
Coarse particle screening	10 mesh-20 mesh	2mm-0.85mm	Used for primary screening to remove large rubber particles or impurities, such as initial separation after rough grinding of tires
Medium particle classification	30 mesh-50 mesh	0.6mm-0.3mm	Suitable for recycled rubber raw materials or rubber fillers, requiring medium particle size uniformity, such as building material additives
Fine particle screening	60 mesh-100 mesh	0.25mm -0.15mm	Used for filling or modification of rubber products, such as rubber pads and seals, which require finer powders
Ultrafine powder preparation	120 mesh-200 mesh	0.125mm-0.075mm	Suitable for high-precision applications, such as rubber additives, coating additives or high-performance composite materials, which require fineness and no impurities
Micro powder analysis	200 mesh-400 mesh	0.075mm-0.038mm	Used for laboratory analysis or special purposes (such as nano-grade rubber powder), which requires high-precision equipment support

Application of Rubber Powder Test Sieve

Rubber powder test sieve has a wide range of applications in rubber recycling, product production, quality inspection, rubber modified materials, rubber products, chemical industry, material science, recycled rubber, laboratory research, environmental protection and other fields. Its main uses include particle size analysis, quality control, production process optimization, new product development, etc. Through accurate screening analysis, it can improve product quality, optimize production processes, and support scientific research and resource recycling.

Typical technical parameters of rubber powder test sieve

Parameter	typical value / range	description
Screen mesh number	10 mesh-200 mesh	corresponding aperture of about 2mm-0.075mm, select according to needs
Diameter	200mm/300mm	common laboratory size, 200mm is standard, 300mm is suitable for large samples
Material	stainless steel 304 or brass	corrosion resistance, prevent rubber powder from adhering or contaminating
Height	50mm (full height) / 25mm (half height)	full height is suitable for large capacity, half height is convenient for multi-layer stacking
Vibration frequency	3000 times/minute (if equipped with vibrator)	high-frequency vibration improves screening efficiency, suitable for fine powder
Number of layers	1-8 layers	multi-layer design can separate multiple particle sizes at the same time

Common problems and solutions of rubber powder test sieve

Screen blockage: Rubber powder may cause screen blockage during screening, affecting the screening effect. Clean the screen regularly to avoid excessive accumulation of rubber powder on the screen.

Low screening efficiency: low screening efficiency and slow screening speed. Rubber powder test sieve Adjust the vibration parameters of the vibrating screen; Check whether the screen is damaged or aged, and replace it in time.

Inaccurate particle classification: Inaccurate particle classification cannot achieve the expected screening effect. Check the wear of the screen and replace the damaged screen in time.

Unstable equipment vibration: The vibration of the vibrating screen is unstable, which affects the screening effect. Check whether the supporting structure is firm, adjust the vibration parameters of the vibrator, and ensure stable vibration.