Custom Slot Dies for Adhesive Coating Solutions

Pressure-Sensitive Adhesive (PSA) Coating Technology

Our precision slot dies are engineered for high-performance pressure-sensitive adhesive (PSA) coating, delivering uniform, defect-free adhesive layers for applications in packaging, automotive, medical, and industrial markets. Designed for roll-to-roll coating processes, our dies ensure consistent tack, peel, and shear properties, meeting stringent industry standards. By leveraging advanced materials and computational fluid dynamics (CFD), we optimize PSA coating for efficiency and quality.

Technical Details of PSA Coating

• Coating Uniformity: Achieves ±1% thickness variation across widths up to 2,500 mm, ensuring consistent adhesive performance for labels and tapes.

• Material Compatibility: Supports a wide range of PSA formulations, including acrylic, rubber-based, and silicone adhesives, with viscosity ranges from 500 to 50,000 cP.

• Die Materials: High-grade stainless steel or nickel alloys for corrosion resistance, suitable for aggressive solvent-based or water-based PSAs.

• Slot Width Precision: Machined to ±0.001 mm tolerances, minimizing streaking and ensuring smooth adhesive flow.

• Temperature Control: Integrated heating zones maintain ±1°C accuracy to stabilize adhesive viscosity, critical for high-speed coating (up to 300 m/min).

• Layer Configurations: Supports single-layer and multi-layer PSA coatings for applications like double-sided tapes or medical dressings.

• Flow Optimization: CFD-designed manifolds reduce shear stress, improving tack uniformity by up to 15% compared to standard dies.

• Surface Finish: Polished die lips (Ra < 0.05 µm) prevent adhesive buildup, reducing downtime for cleaning by 25%.

Applications and Benefits

• Packaging: Produces high-clarity PSA films for labels and tapes, enhancing bond strength for food and beverage packaging.

• Automotive: Enables durable adhesive coatings for interior trim and sound-dampening films, meeting OEM specifications.

• Medical: Supports GMP-compliant coatings for wound care and transdermal patches, ensuring biocompatibility and precision.

• Cost Efficiency: Reduces material waste by 10-12% through optimized flow, lowering production costs for high-volume runs.

Case Study Example

A global packaging client required a PSA coating solution for high-speed label production. Our custom slot die, with a 2,000 mm coating width and polished lips, achieved higher tack uniformity, reducing defects by 18% and increasing throughput by 22% compared to their previous system.