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We get a lot of inquiries from small to medium mask production lines, and the WL-DHJ is pretty much the go-to for that—it's the model that balances throughput and cost without overcomplicating things.
You're looking at about 30 pieces per minute, which is what most buyers find adequate for batch runs, and the welding time can be dialed in anywhere from 0.1 to 9.99 seconds—useful when you're swapping between KN95 and surgical masks since materials differ slightly.
Power supply is standerd 220-250V at 50/60Hz, so it works across most regions without a transformer; the ultrasonic frequency runs at 20kHz with 2000W output, and that 9mm welding head gives a consistent spot—better than wider heads for tight curves on ear loops (the 5mm head is an option, but most stick with this one).
One thing I'll mention—it's not suited for N95 flat-fold masks with reinforced straps; teh weld tends to slip on thicker rubber, so you'd want a dual-spot machine for those anyway.
Weight is 18kg and dimnesions are 500mm cubed, which means it fits on a standard lab bench but you'll need to check the table's vibration damping—(2-4 weeks typical lead time form order).
When you order, we include one set of welding heads, a manual, and the CE/RoHS paperwork; MOQ is 2 units usually, but our company can do 1 if you're prototyping—just confirm stock first.
Our MOQ for the WL-DHJ is typically 1 unit, so you can order just one for testing or small-scale production. If you need larger quantities, we can discuss volume discounts.
Yes, we include both CE and RoHS certification documents with each WL-DHJ machine. You'll get them in the shipment package.
Lead time is usually 7-15 working days, depending on stock levels. We'll confirm the exact timeline when you place the order.
The standard 9mm welding head works for most KN95 and surgical masks, but we can customize the head size or shape for your specific needs. Just let us know the requirements.
Keep it in a dry, clean environment at room temperature, away from dust and moisture. No special packaging is needed, but covering it with a cloth helps.
