How Double-Sided Fiberglass Mesh Tape Is Manufactured: Coating, Rewinding and Slitting
Double-sided fiberglass mesh tape is produced on a coating and converting line in three stages: two-side coating on the coating machine, rewinding on the rewinding machine, and slitting and packaging on the slitting machine. The documented production flow is: prepare the materials and mix the adhesive, coat the first side, rewind, coat the second side, and collect the web as a master roll; then rewind to customer lengths such as 50/30/25/10 m; then slit to the requested width and package.
The documented construction is a fiberglass carrier with acrylic oil-based adhesive on both faces and a glassine release liner. This defines what the line must handle: a porous grid that has to carry adhesive on both faces without losing its open structure.
Stage 1: Coating line, two passes on one web
The first stage starts with preparing materials and mixing the adhesive. The adhesive used for this product is an acrylic oil-based (solvent-based) pressure-sensitive adhesive produced in-house. The web is coated on the first side, rewound, then coated on the second side, and finally collected as a master roll.
The two-side sequence is the heart of the process: the first pass establishes one adhesive face, and the second pass builds the opposite face without damaging the first. Because the fiberglass grid is open, coating control decides whether the adhesive wets the grid strands evenly and whether the grid structure remains visible and functional. Industry references describe the same logic for scrim-based double-sided tapes: coat both sides, protect with a release liner, then slit to width.
Stage 2: Rewinding, lengths and roll quality
The second stage rewinds the master roll to the customer length, for example 50/30/25/10 m rolls, or keeps it as a master roll where the customer converts it themselves. The documented master roll format is 1050 mm width in 1000/800/500 m lengths. This stage controls roll appearance, tension and telescoping; a consistent winding tension is what keeps a long roll usable on an application line.
Stage 3: Slitting and packaging
The third stage slits the rewound rolls to the requested width and packages them. For a double-sided tape, slit-edge quality matters because the liner and both adhesive faces meet at the edge; a poor slit edge creates liner lift and unwind problems.
Quality checks documented for the line
The documented QC instruments are the initial tack tester, the 180-degree peel tester, the holding power tester and the thickness gauge. These four checks map directly to what a buyer should ask about: initial tack, peel adhesion, holding power and thickness. Thickness matters because the documented configurations are 100, 150 and 200 microns (WG100/WG150/WG200), and the gauge confirms the SKU matches the order. The sample validation and QC checks explains how to turn these checks into a sample acceptance protocol.
Factory evidence for the process story
The coating, rewinding and slitting stages can be shown with production photos, which separate a factory-based supplier from a content-only site: the coating machine at the two-side pass, the rewound master roll, the slitting line at the finished width and the QC bench with the initial tack, peel, holding power and thickness instruments. When these images are published alongside the process description, the reader can verify that the described line actually exists. The construction diagram and the substrate chart of the product family are the starting visual set; production-floor images add the E-E-A-T layer that application articles cannot provide.
What a buyer should ask the supplier
Ask the supplier to confirm: the adhesive type and whether it is produced in-house; the two-side coating sequence; the master roll width and length options; the rewound lengths available; the slitting width tolerance; and the QC records for the specific batch. The documented configurations are a starting set, not a boundary: requests outside WG100/WG150/WG200 go through a capability check. The mesh tape selection guide shows how to frame the requirement.