How to Select Right Hot-Melt Dispensing Gun for Folder Gluer

Selecting a suitable hot-melt dispensing gun directly influences folder-gluer throughput, reject rate and maintenance workload. Pneumatic high-frequency dot guns fit ordinary high-speed carton positioning; zero-cavity guns are preferred if nozzle clogging and glue carbonization happen frequently. For continuous edge-strip bonding, choose slot-type pneumatic scraper guns. Thin and fragile substrates require low-pressure hot-melt guns to avoid surface damage.

Key selection factors: production line cycle speed, target dispensing pattern (dot / strip / scrape), hot-melt adhesive viscosity range, substrate material and available installation space. All models support multi-gun synchronous working with Keqi hot-melt host systems.

Correct gun choice reduces glue waste, cuts unplanned downtime and stabilizes finished-box quality. Many packaging plants combine dotting guns for instant positioning together with plasma-aided cold-glue main bonding to achieve both high-speed stacking and high-temperature storage-resistance performance for export cartons.