Product Specification

20 mm Presser-Foot-Lift FIBC Sewing Machine for Thick Seam Repair

FIBC Repair Requires More Than Restitching

An FIBC may develop an opened seam, local abrasion, a detached patch, or a damaged folded edge during production inspection or after use. A repair area often retains the original thread and includes overlapping bag fabric, folded edges, or patch material, creating changes in thickness and surface height.

The GB6-180-2 FIBC Sewing Machine combines a cylinder-bed structure with an upper-and-lower compound-feed mechanism. It is primarily used for local repairs on FIBCs, packaging bags, and handbags, including areas that are difficult to position on a conventional flat-bed machine.

Understanding the 20 mm Presser-Foot-Lift Value

The presser foot can be raised to 20 mm by foot operation, providing clearance for positioning folded bag fabric, thick seams, and patched repair areas. A 14 mm hand-operated lift is also available.

The 20 mm value refers to presser-foot lifting clearance; it does not mean that the machine can sew through a 20 mm-thick material assembly. Actual sewing thickness depends on material hardness, layer structure, needle, thread, and feeding condition and must be confirmed by sample sewing.

Four Steps for Thick-Seam Repair

1. Identify the Damage

Determine whether the problem is surface abrasion, an opened seam, local tearing, or damage to a load-bearing section. Damage involving lifting loops or other load-bearing structures should not be approved for reuse based only on visual restitching.

2. Prepare the Original Seam

Remove loose thread and arrange the damaged edges. Confirm that the patch covers the affected area. Severely aged or continuously tearing fabric should be assessed before repair proceeds.

3. Select the Needle and Stitch Length

The GB6-180-2 supports 7×200, 7×230, 7×250, and 7×300 needles and provides a maximum stitch length of 0–11 mm. Selection depends on the number of fabric layers, patch material, and thread size.

4. Inspect the Repaired Area

Check for skipped stitches, thread breakage, patch-edge condition, seam position, and continued fabric tearing. FIBCs intended for rated-load service should also undergo the inspections or tests required by the manufacturer’s quality procedure.

Key Technical Specifications

Suitable Repair Areas

Application

This FIBC Sewing Machine is mainly used for local seam repair and patch sewing on FIBCs, jumbo bags, industrial packaging bags, and handbags. Its 20 mm foot-operated presser-foot lift provides clearance for positioning thick folded or patched areas. Whether a repaired FIBC can return to rated-load handling should be determined from the damage location, original bag condition, and necessary finished-bag testing.

FAQ

1. Does a 20 mm presser-foot lift mean a maximum sewing thickness of 20 mm?

No. The value describes the available presser-foot lifting clearance. Actual sewing thickness must be tested according to material hardness, overlapping layers, needle, and thread.

2. Can this machine repair FIBC lifting loops?

The material describes the machine as suitable for FIBC repair. Because lifting loops are load-bearing components, repair permission and post-repair load capacity must be confirmed separately through the applicable bag standard, stitch pattern, and load testing.

3. Why does the machine support several needle sizes?

Different fabric thicknesses, patch layers, and thread sizes require different needles. The machine supports sizes from 7×200 to 7×300, with final selection based on sample sewing.