How to Select Double-Sided Fiberglass Mesh Tape for Bonding Applications
Selecting a double-sided fiberglass mesh tape starts with five decisions, not with a product name: the bonded materials and their surface condition, the application and load direction, the adhesive system, the thickness, and the converting format. When those five are defined, a supplier can match a candidate construction and a representative sample.
For the Broadya mesh tape family, the documented configurations are WG100, WG150 and WG200 at 100, 150 and 200 microns, with a fiberglass grid carrier, acrylic oil-based adhesive on both faces and a glassine release liner. The master roll is 1050 mm wide in 1000/800/500 m lengths. These are the configurations currently documented and commonly supplied; they are not a manufacturing limit. If the requirement falls outside them, the request should go through a capability check rather than being rejected.
The five selection decisions
1. Substrate pair. The documented application range covers floor underlayment, rubber products, foam, textiles, nonwovens, leather, sealing strips and curtains, and the official substrate chart adds metal, wood, plastic, glass, stone, concrete and cardboard. Each surface class wets differently. Name the exact grades and surface condition instead of asking for a generic tape.
2. Application and load direction. A wide panel bond, a floor seam under traffic and a curtain hem place different demands on peel resistance and dimensional stability. The fiberglass grid carrier is documented as providing high tensile strength, dimensional stability and tear resistance, which matters most where the seam resists stretch, creep or tearing.
3. Adhesive system. The documented construction uses an acrylic oil-based adhesive produced in-house. For low-surface-energy plastics or porous materials, the adhesive selection must be checked against the actual substrate, not assumed from the carrier.
4. Thickness. The documented options are 100, 150 and 200 microns. Thickness changes the bond line, the gap filling and the converting behavior; see the floor underlayment bonding and mesh vs tissue carrier choice discussions for where the difference shows up in practice.
5. Converting format. Confirm whether the requirement is a 1050 mm master roll for in-house slitting, a rewound length, or a finished roll at a defined width. The documented lengths are 1000/800/500 m on the master roll, with rewound options such as 50/30/25/10 m.
How to compare candidates
Compare candidates under the same substrate preparation, application pressure, dwell time and conditioning. Record tape thickness, liner, width, applied pressure and test geometry. For flexible materials, include the peel direction. For converting, evaluate unwind behavior, slit-edge quality and liner release consistency.
Evidence and compliance
The knowledge base records the documented configurations, the four-layer construction and the documented applications. The official construction diagram shows release liner, high-tack adhesive, fiberglass grid carrier and a second high-performance adhesive layer. Industry references describe the same construction logic for scrim-based double-sided tapes, but third-party numbers are method examples, not a Broadya data sheet. Request the applicable reports and confirm the exact configuration before release.
Specification checklist for the supplier
Provide the substrate names and grades, part dimensions, bond width, target thickness, liner preference, roll width and length, core size, winding direction, monthly volume, packaging requirements and validation method. If the requirement is a master roll, confirm whether the requested length is a finished roll or a master-roll conversion plan. If the first order is a sample, define what result will qualify the tape for the next stage.
Validation approach
Use a representative sample on production substrates. Inspect initial wetting and handling, then measure the failure mode after the agreed dwell and conditioning period. Separate adhesive transfer, cohesive failure, substrate separation, edge lift and liner or converting defects. Agree the acceptance criteria before testing so both sides interpret the result the same way.
Common selection pitfalls
Three mistakes appear repeatedly when buyers select mesh tape. The first is choosing by hand-feel: a tacky adhesive feels strong, but tack does not predict holding power or dimensional stability under load. The second is assuming one thickness serves every joint; the documented 100, 150 and 200 micron options exist because bond gap and peel stress differ, and the right answer for a specific seam needs a capability conversation, not a default. The third is ordering a finished-roll format before confirming the converting plan; a 1050 mm master roll converted in-house is a different cost and quality story from a pre-slit roll. Write the decision variables down, screen the substrate, then request a sample that matches the exact configuration and format.