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The bag top folding device is an automated pre-sealing system developed by Detai to prepare the mouth of the bag before stitching. By folding the top edge of the bag into a neat, reinforced layer, it improves sealing strength and helps prevent issues such as leakage, loose stitching, or opening during transport. This bag infeed device is commonly installed at the front end of an automatic bag closing system to ensure packaging quality remains stable and consistent across the production line.
This belt-type folding device prepares the bag mouth before sewing by folding the upper edge into a clean, uniform shape. Once the fold is formed, downstream sewing systems can create a stronger and more secure closure. This greatly reduces issues such as bag leakage, loose stitching, or breakage during handling and transport.
This belt-type folding device prepares the bag mouth before sewing by folding the upper edge into a clean, uniform shape. Once the fold is formed, downstream sewing systems can create a stronger and more secure closure. This greatly reduces issues such as bag leakage, loose stitching, or breakage during handling and transport.
This bag top folding device integrates a trimming unit and a crepe-paper dispenser, allowing operators to adjust the trimming height freely to match different bag specifications. When paired with Detai’s bag sewing machines, pedestals, and conveyors, it can automatically complete bag-top trimming, crepe-paper application, and stitching in a single continuous process.
This bag top folding device uses a chain-driven system that moves rows of rubber bars to apply controlled pressure and friction along the top edge of the bag. As the bag travels between the two bar rows, the device gently folds and shapes the bag mouth, creating a consistent and secure fold that prepares the bag for sewing.
This bag-top folding machine is a chain-driven stainless steel folding device designed to feed the bag all the way through to the sewing section. It is suitable for packaging lines in the grain, chemical, fertilizer, and feed industries, where it supports stable folding and infeed before stitching.
From bagging to palletizing, we design and manufacture full packaging lines engineered to match your bulk materials, capacity needs, and plant layout.
To enhance sealing strength and improve overall bag presentation, a belt-type bag top folding device or a rubber-bar chain folding device is recommended. Both create a firm, uniform fold, making the stitched seam more secure.
The GP8600 extended belt-type folding device is ideal for large bag openings or applications requiring a longer folding stroke. Its extended structure provides greater control, producing stable, uniform folds even with oversized packaging. It is widely used in food, chemical, and feed industries.
Recommended models include the GP4900 belt-type folding device and the GP8600 extended belt-type folding device, both offering clean, consistent folding for these materials.
The GP6000 or GP1360 rubber-bar chain folding devices are better suited. Their folding mechanism maintains accuracy and stability even at high operating speeds or with bags that require a more controlled folding force.
