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The injection mold date stamp pin is a high-precision component engineered to imprint critical identifiers—such as production dates, batch numbers, and traceability codes—directly onto plastic molded parts during the injection molding process. Crafted for durability and accuracy, this tool is indispensable for manufacturers seeking to comply with industry traceability standards while ensuring clear, long-lasting markings on their products.
Manufactured using SKD11 tool steel—a material renowned for its exceptional wear resistance and dimensional stability—this date stamp pin undergoes rigorous heat treatment to achieve a hardness of HRC 58-62. This ensures it can withstand the extreme pressures (up to 2000 bar) and temperatures (up to 200°C / 392°F) typical in injection molding, maintaining sharp imprints even after prolonged use.
Customizable with numerical (0-9), alphabetical (A-Z), and symbolic characters, the pin adapts to diverse coding needs, from simple “YY-MM-DD” formats to complex batch codes. Whether for small-scale production or high-volume manufacturing, it delivers consistent performance, making it a reliable choice for plastic molders, packaging producers, and automotive component manufacturers.
Parameter | Details |
Material | SKD11 tool steel (with TiN coating on tip) |
Hardness | HRC 58-62 (after heat treatment) |
Character Depth | 0.3mm to 0.5mm |
Shank Diameter | 5mm, 6mm, 8mm (customizable) |
Shank Length | 20mm to 100mm (customizable) |
Temperature Resistance | Up to 200°C (392°F) (base material); 500°C (932°F) (TiN coating) |
Service Life | 500,000–1,000,000 cycles (with proper maintenance) |
Each date stamp pin features laser-engraved or EDM-machined characters that ensure sharp, legible imprints on plastic surfaces. The standardized depth of 0.3mm to 0.5mm balances visibility with minimal impact on part integrity, making it suitable for both thick and thin-walled plastic components. Custom font styles and layouts—such as sequential batch codes or region-specific date formats—are available to meet unique industry requirements.
Constructed from SKD11 tool steel, the pin body offers superior wear resistance and dimensional stability, even under the repeated stress of high-volume molding. The tip is enhanced with a TiN (titanium nitride) coating, which reduces friction during mold ejection and extends service life by resisting corrosion and heat up to 500°C (932°F)—far exceeding the typical operating temperatures of injection molds (80°C–150°C / 176°F–302°F).
Designed for universal compatibility, the pin features a cylindrical shank with precision-ground diameters (5mm, 6mm, 8mm) and a flat machined face, ensuring secure attachment to mold cores or cavity plates. Shank lengths from 20mm to 100mm can be customized to fit varying mold thicknesses, eliminating the need for costly mold modifications.
One of its standout advantages is the ability to replace date inserts without disassembling the mold. By rotating the date disc counterclockwise 2-4 turns, the insert releases smoothly, reducing downtime during batch changes. This user-friendly design minimizes production interruptions, making it ideal for facilities with tight manufacturing schedules.
The date stamp pin works seamlessly with all thermoplastic materials, including PP, PE, ABS, and PC, and can imprint on flat, curved, or textured surfaces. It is compatible with both cold runner and hot runner molds, ensuring adaptability across diverse production setups.
In food, pharmaceutical, and cosmetic packaging, the date stamp pin imprints expiration dates, batch codes, and recycling symbols on plastic bottles, caps, and containers. This ensures compliance with regulatory standards for product traceability and consumer safety.
Automotive component producers use the pin to mark part numbers, production dates, and supplier codes on interior trim, engine covers, and electrical housings. These markings facilitate quality control and recall management throughout the supply chain.
For toys, household appliances, and electronics, the pin adds safety certifications, model numbers, and manufacturing locations to molded parts. This helps brands maintain transparency and meet international market requirements.
Adhering to FDA and ISO 13485 standards, the pin imprints lot numbers, sterilization dates, and device identifiers on medical plastic components such as syringes, IV connectors, and diagnostic tool housings. This ensures full traceability from production to patient use.
This injection mold date stamp pin combines precision, durability, and versatility to meet the demanding needs of modern manufacturing. Its customizable design and high-performance materials make it a valuable asset for any facility prioritizing efficiency and compliance.
