4-Panel
4-Panel bags are constructed with five main body components (4 side Panels + Base). When filled, a 4-Panel bag will hold its square shape similar to other construction types. Typically, 4-panel bags will hold their shape better than the U-panel bags, and U-panel bags will hold their shape better than a Circular bag. Due to the large amount of stitching required, a 4-Panel bag has a greater opportunity to fail at the seams and is prone to sifting. Nevertheless, 4-panel bags are ideal for storage due to the way they hold their shape when filled. 4-Panel baffled bags are very common bag style.

Economical packaging - More materials can be shipped for the same price due to increased bag capacity and reduced tare weight. Fbics can also be placed and stacked higher and more efficiently than smaller bags. This maximizes shipping containers and storage space.

As one of the professional manufacturers of pp woven bags and bulk bags in CHINA, CHANGHZOU JINWEI PLASTIC WOVEN BAG FACTORY specializes in producing all kinds of bags, such as:PP woven bags(offset & flexo printed bags,bopp laminated bags,inner coated bags,back seal laminated bags);AD. Starlinger bags(block bottom valve bags,block bottom bags,back seal kraft paper bags);Big bags/Jumbo bags(C type jumbo,U-panle jumbo,Circular jumbo,Sling bags) and pp woven fabric at the tubular width 350-1500mm... Our above products are widely used for fertilizers, dry food, sugar, salt, seeds, cereal, animal feed, coffee beans, powdered milk, plastic resins and construction materials. Established in 1999, our company covers an area of 10,000 square meters and there are more than 150 employees. We possess a series of advanced equipment from extrusion to packing. There are 2 sets of extruders, 50 sets of circular looms,1 set of laminating and back sealing machines, 1 set of computerized high-speed and 6-color flexible relief pressing machines, 2 sets of automatic positioned cutting machine, 1 set of gusset folding machine,1 of inner lamination machine, 100 sets of sewing machines with single stitch or double stitches and 2 sets of packing machines, which form an integrated product line with an annual output of 5,000 metric tons. Meanwhile, we have complete equipment for quality testing so that we can ensure that the quality of products is strictly in accordance with the clients' requirements. In 2009, our products passed the audit of ISO9001 certification. "Customer first and reputation first" is the tenet we always adhere to. High quality, competitive price and superior service help us win honor and clients' trust. Around 90% of our products are well exported to Europe,America,Africa,Asia and Australia. We are looking forward to building business relationships with you.