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.