ZIG ZAG COLUMNED BIG BAG

Features of Cross Corner (Zig Zag Loop) Big Bags

A Cross Corner Big Bag (commonly referred to as Zig Zag Loop in some markets) is a specialized packaging solution designed specifically for operational efficiency and ease of handling. The primary difference from a standard Big Bag lies in the positioning and attachment of the lifting loops.

Here are the key features and advantages of this model:

1. Loop Design and "Self-Standing" Feature

The most characteristic feature is how the loops are sewn onto the bag.

• Positioning: The loops are not sewn into the side seams. Instead, they are stitched onto the body fabric (usually circular woven) across the corners in a "zig-zag" or cross-corner fashion.

• Always Open: The loops are designed to stay upright and open, even when the bag is empty or partially filled. This allows forklift operators to insert the forks directly into the loops without needing to get out of the vehicle or requiring a second person to hold them open.

2. Circular Woven Structure

• Seamless Body: These bags are typically manufactured using Circular (Tubular) Woven fabric. This means there are no vertical side seams on the body of the bag.

• Enhanced Strength: The absence of side seams eliminates the "weakest points" of the bag, significantly reducing the risk of bursting or tearing under heavy pressure.

• Leakage Prevention: Fewer seams mean a lower chance of fine powders leaking through stitch holes.

3. Operational Advantages

• Logistical Speed: Ideal for high-circulation environments like ports, warehouses, and large factories where time is critical.

• Occupational Safety: Since the forklift operator doesn't need to manually adjust the loops or have an assistant help, the risk of accidents during the lifting process is greatly reduced.

• Automation Friendly: This is the most compatible design for robotic arms and automated filling lines that need to grab loops autonomously.

4. Technical Specifications

• Safety Factor (SF): Usually produced with a 5:1 (Single-trip) or 6:1 (Multi-trip/UN) safety ratio.

• Safe Working Load (SWL): Capable of carrying loads ranging from 500 kg to 2,000 kg.

• Lamination and Liners: Can be produced with lamination (coating) or internal polyethylene liners depending on the moisture and sifting requirements of the product.