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1. Client Background
A composite plastics manufacturing enterprise in Foshan is deeply engaged in R&D and production of composite plastic materials, with its products widely used in **packaging, automotive parts, electronic insulation** and other industries. In the composite plastics production process, metal foreign objects may be introduced during raw material mixing, equipment wear and other links. If metal impurities are not detected in time, they will seriously affect the key indicators such as mechanical properties and insulation properties of the products, and even cause damage to downstream customers' equipment and safety accidents. Therefore, there is an extremely urgent demand for **high-precision metal foreign object detection**.
2. Pain Points
（1）**Detection Difficulty Due to Material Characteristics**: In composite plastics production, impurities such as iron, non-ferrous metals (e.g., copper, aluminum), and stainless steel chips are easily mixed in, and conventional detection methods are difficult to accurately identify multiple metal types.
（2）**Balance Between Production Line Efficiency and Detection Precision**: The production line conveying speed is relatively fast, so the detection equipment is required to ensure both **efficient detection efficiency** and **high detection precision**, avoiding slowing down the overall production rhythm due to the detection link.
（3）**Environmental Adaptability Requirements**: There is a certain humidity in the production environment, which puts forward higher requirements for the **stability and protection performance** of the detection equipment, requiring the equipment to operate reliably for a long time.
3. Yiwan Customized Solution
To address the pain points of the composite plastics enterprise, Guangdong Yiwan Testing Technology Co., Ltd. provides a **full-process metal detector solution** with the following core advantages:
（1）Accurately Matched Detection Performance
According to the specifications of composite plastic products, a model with an adapted **detection tunnel height** (e.g., 150mm height model in this case) is selected to achieve accurate detection of different metal types:
- Detection sensitivity for ferrous metal (Fe) ≥0.7mm;
- Detection sensitivity for non-ferrous metal (Non-Fe) ≥1.0mm;
- Detection sensitivity for 304 stainless steel (304 SUS) ≥1.5mm;
It can fully intercept various metal impurities that may be mixed in during composite plastics production.
（2）Intelligent Functions Ensure Stable Detection
- **Phase Tracking + Product Tracking + Automatic Balance Correction**: Even if the shape and position of composite plastic products change, stable and high-precision detection can still be maintained; the automatic balance correction function can also extend the service life of the equipment and reduce maintenance costs.
- **FPGA + DSP Dual Technology Support**: High-performance FPGA is used to realize DDS technology, cooperating with advanced DSP data processing technology, which greatly improves the anti-interference ability of the equipment and perfectly adapts to the complex electromagnetic environment of the factory.
（3）Efficient Production Line Adaptation
- Conveying speed is **adjustable from 25-30m/min**, accurately matching the speed of the customer's composite plastics production line without affecting production efficiency;
- The detection tunnel width is 400mm (customizable), meeting the width requirements of composite plastic products and realizing seamless connection of the production line.
（4）Customized Protection Performance
Optional **IP65 waterproof grade** (customized according to actual factory needs) can effectively deal with the humidity in the production environment and ensure the long-term stable operation of the equipment.
4. Implementation Effect
（1）**Significant Improvement in Product Quality**: The metal detector successfully intercepted multiple metal foreign object mixing incidents, and the product defect rate was reduced by **more than 98%**, completely eliminating the risk of downstream complaints caused by metal impurities.
（2）**Steady Guarantee of Production Efficiency**: The equipment conveying speed is accurately matched with the production line, realizing seamless connection between "detection and production", and no production line stagnation is caused by the detection link.
（3）**Reduction in Equipment Operation and Maintenance Costs**: Functions such as automatic balance correction and high anti-interference performance have significantly improved the operation stability of the equipment, and the maintenance frequency and cost have been greatly reduced.
5. Customer Evaluation
"Guangdong Yiwan's metal detector has completely solved the metal foreign object detection problem in our composite plastics production! The equipment is accurate in detection and stable in operation, and the service team is also very professional. It has helped us greatly improve product quality and is a long-term trustworthy partner!"
——Head of Production Department, A Composite Plastics Manufacturing Enterprise in Foshan
