Changzhou Mingseal Robot Technology Co., Ltd.

Customer scenario A Taiwanese advanced packaging company pursuing local supply-chain resilience needed a reliable panel-level dispensing solution for RDL-first FOPLP (Fan‑Out Panel Level Packaging) manufacturing. Their process mix included Underfill, coating and flux spray across panel formats up to 510 × 515 mm and 600 × 600 mm. Critical challenges were precise, repeatable underfill deposition across large panels, prevention of panel warp during thermal cycles, integration with automated material handling (PGV/AGV/OHT) and full-process traceability for high-yield production. Mingseal SS300 solution — the first domestically produced FoPLP panel dispenser Mingseal delivered the SS300 as Taiwan’s first home‑grown panel-level dispensing system purpose-built for FOPLP. Engineered to meet demanding thermal, mechanical and process-control requirements of panel-level underfill and related steps, the SS300 combined production-grade throughput with industry standard automation interfaces. Key system capabilities implemented Panel compatibility and flexible handling: The SS300 supports both 510 × 515 mm and 600 × 600 mm formats, enabling the customer to run multiple product families without changeover. Automatic panel loading and unloading interfaces (PGV/AGV/OHT compatible) were configured to fit the customer’s factory OHT flow for unattended operation. Four-valve independent dispensing: Four independently controlled dispensing valves allowed concurrent multi-zone processing on a single panel or simultaneous work on several smaller panel arrays. This increased throughput and provided process flexibility for mixed recipes (underfill, coating, flux spray) in the same line. Precision underfill and coating: High-stability motion control and fine dispense metering ensured uniform bead geometry and predictable capillary flow for RDL-first underfill. Recipes for underfill, coating and flux spray were stored and recalled via the system’s recipe management to guarantee process repeatability and traceability. Robust anti-warping mechanical design: A unique mechanical anti-warping system maintains panel planarity within ±10 mm during loading, preheating, operation heating and dispensing. Combined with closed-loop temperature control, this prevents nozzle crashes and mis-deposition caused by thermal bowing common to large, thin panels. Full-process thermal management: The SS300 provides finely controlled preheat and operation heating zones. Automatic temperature correction across the process minimizes viscosity drift and improves underfill flow control—critical for complete void-free wetting in FOPLP architectures. In-line video monitoring and AOI: Whole-process video monitoring records panel turnover, dispense head motion and dispense quality. Glue-shape AOI inspects bead width and continuity, enabling immediate corrective actions and simplified problem tracing for yield optimization. Production outcomes and value for the Taiwanese line Improved yield and reliability: Accurate underfill deposition and anti-warping control reduced voiding and nozzle crashes, increasing first-pass yield in FOPLP runs and lowering scrap and rework rates. Higher throughput with flexible recipes: The four-valve architecture and automatic handling interfaces supported uninterrupted, high-mix production while maintaining consistent process parameters for underfill, coating and flux spray recipes. Seamless factory integration and traceability: Standard semiconductor communication protocols and AGV/PGV/OHT interfaces allowed easy MES docking and enabled unattended operation with full trace logs for audits and quality control. Localized support and faster ramp-up: As the first domestic system in Taiwan tailored to FOPLP, the SS300 offered faster validation, on-site tuning and supply-chain advantages compared with imported alternatives—accelerating production ramp and reducing lead times. Conclusion For Taiwanese manufacturers pursuing RDL-first FOPLP, the SS300 provides a production-ready, domestically produced panel-level dispensing platform. By combining large-panel compatibility, four-valve independent dispensing, robust anti-warping mechanics (±10 mm), precise thermal control and full-process AOI, the SS300 secures consistent underfill, coating and flux applications—supporting higher yield, reliable operation and streamlined factory integration. Contact Mingseal to schedule a site demo and process qualification for your FOPLP panel portfolio.

Customer scenario An Indian wearable manufacturer producing smartwatches faced recurring issues with assembly of compact metal housings: securing tiny screws into threaded holes that are prone to loosening during use. The line required precise micro‑dispensing of moisture‑curing adhesives into micro‑holes to create a reliable threadlocker without excess squeeze‑out that could interfere with threads or electronics. Target glue mass per hole was 0.2~0.3 mg, with deposits placed inside micro‑diameter threaded bores. The customer needed a robot‑compatible dispenser that could handle moisture‑curing chemistries, deliver repeatable micro‑doses inside confined geometry, and reduce rework and warranty returns. Mingseal KSV1000 solution Mingseal recommended the wear‑resistant KSV1000 variant for this precision task. The concentric auger screw metering provides positive displacement control, linear flow with motor RPM, and a short fluid path—features well suited to sub‑milligram dosing into micro‑holes containing threads. Key process elements implemented Positive‑displacement micro‑metering: The KSV1000’s rotating screw precisely meters paste volume proportional to rpm, allowing consistent shot masses in the 0.2~0.3 mg target range. Encoder‑driven motor pulses produce highly repeatable micro‑shots, eliminating pressure pulse artifacts common to pneumatic systems that cause deposit variability. Wear‑resistant wet path and fine nozzles: For filled or slightly abrasive threadlocker formulations, the wear‑resistant screw and wetted components reduce clearance growth and maintain dosing accuracy over long runs. Micro‑nozzles with small tip diameters were selected to reach into threaded bores without contacting threads, preventing mechanical disturbance. Short fluid path and degassing strategy: The KSV1000’s short flow path minimizes air entrapment. The feed system incorporated gentle agitation and vacuum degas procedures during material preparation to avoid bubbles that could cause under‑fills or inconsistent mass. Robot wrist mounting and vision alignment: The compact head enabled robot wrist mounting for precise z‑axis insertion into micro‑holes. A high‑resolution vision system located screw hole centers and corrected approach vectors to ensure the nozzle tip remained centered above the bore before micro‑deposition. Process tuning for moisture‑curing adhesives: Dispense parameters (rpm, pulse width, and nozzle geometry) were tuned to control wet bead shape and promote in‑bore wetting without over‑apply. Environmental controls limited humidity exposure until assembly stages where cure was desired; inline timers and part transfer ensured predictable cure initiation. Quality controls and closed‑loop checks Microbalance sampling: Periodic inline microbalance checks verified shot mass; if average mass drifted beyond control limits, the system auto‑adjusted motor pulses or triggered a maintenance purge. Optical inspection: A camera inspected hole fill appearance and verified absence of external squeeze‑out that could impede thread engagement. Production outcomes and benefits Consistent adhesive mass: Shot‑to‑shot variance was reduced to meet the 0.2~0.3 mg target reliably, reducing rework from loose screws and avoiding interference with threads. Improved assembly reliability: Controlled in‑bore dosing increased threadlock strength and vibration resistance of assembled smartwatches, cutting field returns and improving consumer confidence. Lower material waste and maintenance: Positive metering and wear‑resistant components reduced over‑apply and nozzle wear, lowering consumable costs and extending mean time between service. High throughput compatibility: The KSV1000’s up to 500 rpm capability and compact form factor matched existing robotic cell takt times without sacrificing precision. Conclusion For Indian smartwatch manufacturers needing micro‑dispense into threaded holes with moisture‑cure adhesives, the KSV1000 concentric auger valve delivers the repeatable, sub‑milligram control required to secure fasteners without contaminating threads or electronics. Combined with proper material prep, vision alignment and closed‑loop weight control, the KSV1000 improves assembly robustness, reduces warranty risk, and supports high‑volume wearable production. Contact Mingseal to arrange a material compatibility test and process validation on your smartwatch assembly line.

Customer scenario A Taiwanese systems integrator assembling AI servers required a reliable, high‑precision solution for dispensing particulate‑filled thermal gap pads and bonding adhesives during module assembly. Core modules include heat spreaders, high‑power ASICs and stacked memory where controlled, repeatable application of thermally conductive pastes (including abrasively loaded, particle‑filled formulations) is critical to thermal performance and mechanical durability. The customer sought a valve that could meter two-component materials accurately, handle abrasive fillers, increase wear resistance of bonded interfaces, and extend maintenance intervals on high‑volume production lines. Mingseal KSP Series solution Mingseal recommended the KSP Series two‑component screw valve (KSP0350B configuration) to meet the integrator’s requirements by combining precision volumetric metering with a robust wet path engineered for filled pastes. Key technical fits Precision volumetric two‑component metering: The KSP screw architecture delivers linear, positive‑displacement flow proportional to screw rotation for both base and curing agent streams. This ensures accurate mix ratios and consistent shot masses across thousands of parts—critical for thermal conductivity and cure performance of the filled gap material. Abrasion‑resistant wet path: Wetted components in the KSP0350B are made from wear‑resistant alloys and engineered seals to withstand silica/metal oxide filler abrasion. This reduces clearance growth and maintains dispense accuracy when processing high‑particle‑loading thermal pastes.Homogeneous mixing and shear control: The concentric screw geometry provides gentle but effective in‑line blending, preserving particle dispersion without excessive shear that could alter rheology or introduce air. Consistent mixing maintains particle suspension for predictable thermal pathways after cure. High repeatability and throughput: Motor‑driven pulse control with encoder feedback enables fine resolution of shot volumes and rapid cycling to match AI server assembly takt times while ensuring repeatability across shifts and batches.Process integration and implementation Material and nozzle selection: Mingseal performed material characterization to select screw pitch, rpm maps and nozzle geometries optimized for the customer’s particle size distribution and viscosity range, avoiding nozzle clogging while ensuring full cavity fill.Closed‑loop quality control: Inline weight sampling and periodic microscope inspection of bead geometry were integrated into the line. If microbalance data drifted, the system auto‑adjusted motor pulses and flagged preventive maintenance before quality impact. Wear management and maintenance extension: The KSP0350B’s replaceable wear sleeves and scheduled purge cycles were configured to match shot counts, pushing mean time between service intervals well beyond the customer’s previous pneumatic dispensing setup. Production outcomes and benefits Improved thermal performance: Consistent mix ratio and uniform particle distribution produced reliable thermal paths between ASICs and heat spreaders, improving steady‑state die temperatures and reducing frequency of thermal throttling under heavy AI workloads. Increased mechanical durability: Precisely controlled adhesive fillets and bonding layers increased shear and fatigue resistance of core components, lowering field failures from vibration and thermal cycling. Reduced downtime and lower TCO: Abrasion‑resistant wet path and planned preventive maintenance extended service intervals, reduced unexpected stoppages, and lowered total cost of ownership compared with disposable or pneumatic metering heads. Process traceability and compliance: The KSP system logs mix ratios, shot counts and maintenance actions for traceability—supporting quality audits and root‑cause analysis for high‑value server modules. Conclusion  For Taiwanese AI server manufacturers facing demanding thermal management and reliability targets, the KSP Series two‑component screw valve (KSP0350B) provides a rugged, high‑precision dispensing platform for particle‑filled thermal adhesives. By combining volumetric metering, abrasion‑resistant construction, and closed‑loop control, the KSP helps deliver stable thermal conductivity, enhanced component durability, and longer maintenance cycles—supporting higher uptime and predictable production costs. Contact Mingseal to schedule a pilot trial with your thermal compound and server module layout.