Breaking the Canvas Stretcher Bar Throughput Ceiling

Challenge

Manual pneumatic underpinners required operators to align, nail one corner, flip the frame, and repeat. Cycles ran 15–20 seconds with fatigue-driven misalignment and twisted joints on high-volume e-commerce canvas orders.

Solution

The factory deployed NN300 automatic quad-corner underpinner lines with 65 cm vertical feed height and synchronized vertical clamping. All four corners are locked and nailed simultaneously without lifting or flipping the frame.

Results

Testimonial

We finally absorbed peak-season POD volume without adding headcount. Corners are square every time — no more flip-and-hope.

Products Used

• NN300 Auto Quad-Angle Underpinner V-Nailer Machine · Get Quote