Bonding Foam, Fabric, Nonwoven and Leather with Double-Sided Mesh Tape
Foam, fabric, nonwoven, leather and similar flexible materials can be bonded with double-sided mesh tape, but the bond must be evaluated differently from a rigid-panel bond. Two things decide the result: whether the adhesive wets the fiber or cell structure enough to develop contact, and whether the carrier stops the tape itself from stretching when the material moves. The Broadya documentation lists rubber products, foam, textiles, nonwovens, leather, sealing strips and curtains as application cases for the mesh tape family.
The documented configurations are WG100, WG150 and WG200 at 100, 150 and 200 microns on a 1050 mm master roll. The carrier is a fiberglass grid, which is documented as providing high tensile strength, dimensional stability and tear resistance; this is exactly the property a stretchy seam needs.
Flexible substrates are a different bonding problem
Foam, fabric and nonwoven are porous, compressible and often stretchy. A tissue or film carrier can elongate under load; a mesh carrier resists that stretch, which is why mesh constructions are used where the seam must stay dimensionally stable, such as carpet seaming. The adhesive must wet the fiber or cell structure, and the carrier must hold the geometry.
What to check on each material class
- Foam: check whether the adhesive wets the cell surface without attacking the foam, and check compression recovery at the seam.
- Fabric and nonwoven: check fiber pull-out, lint, and whether the adhesive penetrates enough to develop hold without bleeding through.
- Leather and synthetic leather: check surface finish, release agents and flexibility at the fold line.
- Sealing strips and curtains: check peel direction, edge folding and repeated handling.
The official substrate chart for the product also lists metal, wood, plastic, glass, stone, concrete and cardboard, so the same tape family covers both flexible and rigid bonding. The full screening logic is in the mesh tape selection guide.
Peel direction and handling
Flexible materials are usually peeled, folded and handled during assembly, so the peel direction matters more than on rigid panels. Test the tape in the direction the seam will actually be stressed. Record whether the failure is adhesive transfer, cohesive failure, substrate tearing or edge lift. A fabric that tears before the tape fails may indicate an acceptable bond; a tape that releases cleanly from the fabric may need a different adhesive or a surface treatment.
Roll format for converting
For lamination and converting, confirm the roll format with the supplier. Define the slit width, the liner release behavior and the unwind characteristics for the converting line; the coating and converting process explains how the master roll, rewound length and slit width are produced.
Converting and packaging notes
For flexible materials, the roll format often matters as much as the adhesive. The documented configurations are WG100, WG150 and WG200 on a 1050 mm master roll in 1000/800/500 m lengths; a converting customer slits to the required width, while a finished-goods customer needs the exact width and length up front. Confirm the core size, the winding direction and whether the liner must release on the outside or inside face. For curtains and sealing strips, check that the slit edge is clean: a rough edge catches fibers and causes the liner to lift during application, which becomes visible immediately on a flexible-material line.
Why the grid structure helps lamination lines
On a lamination or converting line, the tape is unwound, applied and cut at speed. A carrier that stretches under web tension shifts the seam position; a grid carrier holds its geometry, which keeps the lamination register stable. The grid also distributes peel stress across the seam instead of concentrating it at the start of a tear, which is why mesh constructions are used on carpet seaming and similar moving assemblies. If the line runs fast or the material is thin, confirm the unwind behavior and slit-edge quality in the sample stage.
Validation approach
Use a representative sample on the actual flexible material. Apply with the same pressure and dwell time as production, then inspect wetting, transfer, edge lift and any substrate damage. For fabric and nonwoven, also run a peel test in the critical direction and record the failure mode.