POM (Polyoxymethylene), commonly known as "silver steel," is a linear polymer (divided into homopolymers and copolymers) with a molecular backbone composed of repeating -O-CH₂- units. It is one of the five major engineering plastics and is known for its high rigidity, high wear resistance, low friction coefficient, and excellent dimensional stability. It is often referred to as a "metal-plastic substitute."
ESD (electrostatic dissipative) refers to a material with a surface resistivity between 10⁵~10⁹ Ω/sq (ohms per square). This material effectively conducts static charge (preventing static accumulation) while preventing excessive conductivity that could cause instantaneous charge release (causing sparks or damage sensitive components).
The core value of the ESD POM Sheet lies in its combination of the inherent mechanical advantages of POM with ESD functionality. It is specifically designed for precision manufacturing applications requiring anti-static protection and high strength and wear resistance.
Common Types and Specifications
Classification by ESD Performance (strictly limited resistivity range)
Standard ESD Type (mainstream): Surface resistivity 10⁶~10⁹ Ω/sq (meets the general requirements of most industrial ESD standards, such as ANSI/ESD S20.20);
High Conductivity Type (for high-end requirements): Surface resistivity 10⁵~10⁶ Ω/sq (for extreme ESD environments, such as high-end chip manufacturing and aerospace electronics packaging);
Customized Type: Adjusts the conductive filler ratio based on specific customer requirements to ensure resistivity remains within the target range.
Classification by Processing Type
Flat Sheet: Thickness range 5-100mm (commonly 3-20mm), Width ≤ 1000mm, Length ≤ 2000mm (customized shapes available);
Rod/Coil: Some suppliers offer rods (diameter 5-150mm) or coils (for continuous processing, such as die-cutting small parts);
Modified Composite: Performance is further optimized by adding glass fiber (for enhanced rigidity) or PTFE (for reduced friction) (e.g., 30% GF + ESD POM for a 50% increase in wear resistance).
Common Standard Sizes
Thickness: 5-100mm;
Width: 1000mm, 610mm;
Length: 2000mm, 1220mm.
esd polyoxymethylene sheet
Typical Application Scenarios and Application Areas
Electronics and Semiconductor Manufacturing
Anti-static Workbench Panels: These are used in processes such as SMT placement and chip packaging to prevent static electricity generated by operators or tools from damaging precision electronic components (such as integrated circuits and LED chips).
Equipment Carriers: Component supports for semiconductor equipment (such as photolithography machines and cleaning machines) require high rigidity and prevent static electricity from interfering with sensitive components.
Electronic Component Turnover Boxes/Pallets: These replace traditional plastic or wooden pallets to prevent static electricity accumulation during transportation and lead to component failure.
Precision Instruments and Automation Equipment
Guide Rail/Slider Assemblies: Linear guides and positioning fixtures used in automated production lines must simultaneously meet high wear resistance (for frequent sliding), low friction (for precise positioning), and anti-static properties (to prevent dust from contaminating lenses and sensors).
Sensor Housings/Mounting Bases: These protect static-sensitive sensors (such as photoelectric sensors and pressure sensors) from external static interference.
Robot End-Effector Accessories: These are fixtures or contact components used by robotic arms to grasp workpieces, preventing static electricity from adsorbing tiny parts (such as electronic chips and optical lenses).
Medical and Laboratory Applications
Cleanroom Worktops: Used in cleanrooms within pharmaceutical factories and biological laboratories to prevent static electricity from attracting dust and affecting product quality (e.g., drug filling and cell culture).
Laboratory Equipment Holders: Used in accessories for precision laboratory instruments (e.g., electron microscopes and spectrometers) to prevent static electricity from interfering with measurement results or damaging samples.
Other Special Applications
Military and Aerospace: Used in precision electronic cabins (e.g., missile guidance element holders) to ensure anti-static, high-strength, and environmentally resistant structural components.
Printing and Packaging: Used in processing equipment for static-sensitive thin films (e.g., lithium battery separators and optical films) to prevent static electricity from causing adhesion or impurity absorption.
