Linear Vibrating Screen For Plastic Particles

What is Linear Vibrating Screen for Plastic Particles?

Linear Vibrating Screen For Plastic Particles utilizes linear vibration to separate plastic particles of different sizes, achieving grading. The equipment can be configured with different mesh sizes to meet production needs; for example, 10–20 mesh separates larger particles or removes impurities; 20–40 mesh is suitable for coarse and fine grading of general plastic particles; 40–80 mesh is used for fine sieving of finer particles; and meshes above 80 mesh are suitable for grading micro-particles or powder-grade plastics. Through a multi-layer screen design (typically 2–4 layers), three- or four-stage grading can be achieved to obtain large, medium, small, and powder-grade products.

Plastic Particles Linear Vibrating Screen processing capacity is typically 50-2000 kg/h, with a sieving accuracy exceeding 95%. Screen materials include 304/316L stainless steel or polyurethane. The equipment is PLC-controlled and supports multi-stage sieving and backwashing. Plastic granules are typically lightweight, prone to static electricity, and easily drift. Linear Vibrating Screen can be equipped with a bouncing ball screen cleaning device or an ultrasonic screen cleaning system to prevent screen clogging. By adjusting the excitation force of the vibrating motor, it is possible to achieve adaptive screening for different particle characteristics.

Running video of Linear Vibrating Screen for Plastic Particles

Linear Vibrating Screen for Plastic Particles Parameters

Features of Linear Vibrating Screen for Plastic Particles

When processing plastic granules, electrostatic adhesion often causes the material to stick to the screen like glue, leading to clogging. We address this by using a carbon brush discharge device and anti-static grounding terminals to break up charge buildup, ensuring the material particles remain dispersed and flowing. Considering the requirement for uniformity in plastic particle size, we have abandoned violent vibration and instead utilize a low-frequency, high-amplitude projectile trajectory, combined with flexible polyurethane bouncing balls, to reduce hard friction between the particles and the stainless steel frame. This gentle physical contact protects the particle surface from fuzzing and breakage. For common 3mm extruded particles or 5mm crushed materials, we recommend using a woven mesh with a large aperture wire diameter ratio, which increases the physical gaps between the material and the screen. As the particles tumble and jump on the inclined screen surface, fine powder and qualified particles quickly separate, thus separating more impurities per unit time.

How does the Linear Vibrating Screen for Plastic Particles work?

The Linear Vibrating Screen for Plastic Particles operates by using a motor-driven eccentric block to generate reciprocating vibration, causing the screen box to move in a straight line. The material continuously moves forward and stratifies on the screen surface; smaller particles gradually pass through the screen, while larger particles continue to move forward, completing the grading process. Before use, check the screen aperture, material, and tension according to the plastic pellet screening requirements, and ensure the equipment connections are secure. Feed material evenly from the hopper to avoid localized accumulation. During operation, the amplitude can be adjusted to control material distribution. After screening, stop the machine sequentially and clean up any remaining material.

Linear Vibrating Screen for Plastic Particles Equipment Structure

The Plastic Particles Linear Vibrating Screen primarily consists of a screen frame, screen mesh, vibration source, and support system. Screen materials can be stainless steel, carbon steel, or polyurethane. Stainless steel or polyurethane mesh is generally recommended for plastic particles, as they are wear-resistant and non-sticky. Regarding anti-static design, plastic particles are prone to static electricity, so a grounded or anti-static vibrating screen can be used to improve safety. The vibration source can be a motor or an exciter. Choosing the right drive method can affect screening stability and energy consumption. Sealing and dust-proof design are also important. Plastic particles are light and easily dispersed, so equipment is typically equipped with a dust cover and enclosed structure to help maintain a clean workshop environment.

Application of Linear Vibrating Screen for Plastic Particles

When screening plastic particles, Plastic Particles Linear Vibrating Screen is suitable for different sizes and types of plastic particles: fine particles (0.5-2mm) such as PP, PE, and PS can be screened with stainless steel wire mesh or polyurethane mesh; medium particles (2-5mm) such as ABS, PVC, and PET are recommended to use stainless steel perforated plate or nylon mesh; hard particles (5-10mm) such as PC and PMMA can be screened with thick steel perforated plate or high-strength polyurethane mesh; large particles (over 10mm) such as engineering plastics or recycled particles should be screened with heavy-duty steel perforated mesh. Light particles should have a reduced vibration amplitude, wet or sticky particles should use anti-blocking or adjustable-angle screens, and brittle particles should be screened with flexible materials and moderate vibration to ensure product integrity.

Differences in screening of different plastic materials

Different plastic materials exhibit varying characteristics during the screening process. For example, PP is relatively lightweight and generally easy to screen, but it is prone to generating static electricity during operation, which can affect the separation effect. PET has a higher density and better flowability, resulting in a smoother screening process and fewer static electricity issues. PVC powder, on the other hand, has fine particles and a certain degree of stickiness, making it more prone to screen clogging, thus requiring an anti-clogging design. Overall, the physical properties of the material directly affect the screening effect and determine the configuration selection of the vibrating screen.

How to Choose the Right Mesh Size

The screen size of a linear vibrating screen for plastic granules is important for accurate separation. Generally, 2–3 mm particles are suitable for 2–2.5 mm screens, 3–5 mm particles are suitable for 3–4 mm screens, and 0.5–1 mm screens are suitable for removing fine powder. It is recommended that, to improve separation accuracy, always choose a screen size slightly smaller than the target particle size.

Real Application Example

At a PP granule recycling site, the raw material size is approximately 3–4 mm, but the finished product often contains fine powder, affecting subsequent use. Initially, the customer used only a single-layer screen, which was not fine enough, and dust problems persisted. Later, they switched to a double-layer Linear Vibrating Screen for Plastic Particles. The upper layer uses a 4 mm screen to intercept large particles, while the lower layer uses a 1 mm screen to separate fine powder, thus simultaneously removing impurities and grading the particles. After the adjustment, the purity reached 95%, and the finished granules were more uniform with less fine powder.

In the recycling and reprocessing process, the Linear Vibrating Screen for Plastic Particles is used to classify and remove impurities from materials of different particle sizes. By adjusting the screen aperture, vibration frequency, and screen layer combination, particles can be naturally separated according to size during the plastic pellet screening process, facilitating subsequent granulation or injection molding. The equipment operates primarily with stable feeding, allowing the material to gradually spread and be separated on the screen surface. The structural design incorporates wear resistance and anti-static properties, and daily cleaning and maintenance are relatively simple, making it suitable for continuous production environments.