This HEPA-500 large width rubber scraper hot melt gun adopts exclusive reverse suction internal flow channel design to deliver high-speed, uniform and precise full-width scraping coating. Matched with independent separate glue control modules, multiple gun units can be combined on one manifold to realize segmented or full integrated wide coating effect, flexible for diverse width production demands. Controlled by 24VDC high-response solenoid valves, it supports a maximum operating speed up to 3500 cycles per minute to keep pace with medium and high-speed continuous coating assembly lines.

Equipped with dual temperature sensors Ni120 and PT100, its adjustable temperature range covers 38°C to 230°C to fit all types of EVA and pressure-sensitive hot melt adhesives. It bears maximum adhesive viscosity up to 15,000 mPa.s and withstands peak glue pressure of 90 bar, compatible with high-viscosity thick hot melt glues for heavy lamination processes. The maximum effective scraping width reaches 700mm, far wider than standard slot coating guns, realizing one-pass full-surface even glue layer without splicing gaps.

It operates stably under air pressure 5.5–6.5 bar (80–90 psi), and runs on standard 220VAC ±10%, 50/60Hz wide-frequency power supply for global factories. The integrated modular manifold structure combines multiple independent scraper units together, easy to install on laminators, roll-to-roll composite machines and automatic production jigs, with wear-resistant internal valve cores for long-term stable high-frequency operation.

The core competitive advantage of this wide rubber scraper gun lies in its ultra-wide 700mm one-step scraping width, which replaces multiple narrow slot guns and greatly simplifies pipeline layout, reducing overall equipment investment and installation space occupation. Its unique reverse suction structure effectively eliminates glue residue inside the flow channel, preventing glue carbonization, nozzle clogging and glue stringing, cutting down maintenance downtime and material waste significantly.

Modular combined design allows customers to activate partial scraper units according to actual coating width requirements, saving adhesive consumption for narrow workpieces. It supports ultra-high viscosity hot melt glue up to 15,000 mPa.s, perfectly suitable for thick-layer lamination processes that standard dispensing guns cannot handle. The dual-sensor constant temperature system achieves ultra-precise temperature control to stabilize glue viscosity and guarantee consistent coating thickness across the full width.

With a cycle speed over 3500 times per minute, it fully matches high-output composite production lines to boost overall factory throughput. Wear-resistant alloy internal components extend service life and lower long-term spare part costs. 

The HEPA-500 large width rubber scraper gun is a professional full-surface wide coating accessory specially developed for large-format continuous lamination, widely applied in non-woven composite, mattress manufacturing, hygiene products, furniture veneer lamination and large packaging industries. For mattress and textile composite production, it completes full-width edge and surface scraping bonding for sponge, fiber cloth and leather materials in one pass, forming uniform thick glue layers to enhance composite firmness and surface flatness.

It dominates disposable hygiene material processing such as diapers and protective cloth lamination, realizing gap-free full-surface coating on wide roll substrates to improve product sealing performance. In furniture and wooden board industry, it serves large-size veneer, panel and door skin lamination, solving uneven coating issues of multiple narrow nozzles. It also fits large-format gift box, hardcover book and filter element full-edge bonding.

Compatible with Keqi pneumatic and gear-type hot melt pump main machines, multiple scraper modules can be combined to form multi-group wide coating systems for ultra-wide substrates. Its modular manifold structure is flexible to mount on roll-to-roll laminating machines and automated composite lines, being the optimal solution for manufacturers requiring large-area, uniform, high-viscosity hot melt scraping coating with high-speed continuous production demands.