SAFT40 Fiberglass Facing Tissue to Improve Surface Stability in Wall Panels and Glass Curtain Wallsn, and Architectural Glass Curtain Wall Panels
2026-11-03 11:46
1. Technical Overview
SAXOBRAN SAFT40 is a wet-laid non-woven fiberglass facing tissue engineered for continuous surface facing of insulation slabs and curtain wall panels.
We manufacture this fiberglass tissue to create a clean, uniform cover over dark mineral wool, rock cotton boards, and fiberglass insulation cores.
The 40g/m² matrix holds dimensional stability under continuous hot press curing up to 200°C and maintains high wet tensile retention under humid jobsite storage.
Factory lines integrate SAFT40 onto mineral boards and glass curtain wall backing systems to eliminate surface fiber shedding, prevent panel warping, and improve paint adhesion.
2. Technical Specifications Table (TDS)
| Technical Parameter | Metric Value | Test Standard | Workshop Function & Purpose |
| Unit Weight (Grammage) | 40 g/m² (±5%) | ISO 3374 | Controls the exact fiberglass tissue mass to ensure consistent resin and binder absorption |
| Loss on Ignition (LOI) | ≤ 25% | ISO 1887 | Maintains binder web structure during continuous hot thermal lamination up to 200°C |
| MD Tensile Strength | ≥ 130 N/50mm | ISO 3342 | Prevents web snaps under machine tension on high-speed panel production lines |
| CD Tensile Strength | ≥ 55 N/50mm | ISO 3342 | Stops edge tears and width shrinkage during continuous roll unwinding and edge slitting |
| MD Tensile (Water Boiling) | ≥ 60% retention | ISO 10542 | Retains web structural integrity during humid outdoor jobsite storage and water-based coating |
| Moisture Content | ≤ 1.0% | ISO 3344 | Prevents steam pinholes, surface bubbles, and delamination during hot pressing |
3.Key Features & Workshop Problem Solvers
Stops Fiber Shedding and Masks Dark Mineral Cores
Unfaced rock wool and mineral wool boards release itchy dust and loose fibers during handling, while their dark color bleeds through light aesthetic coatings. SAFT40 fiberglass facing tissue provides a smooth, dense white or black surface cover. It traps loose core fibers inside the board and creates a clean surface for direct field painting or decorative coating.
Resists Boiling Water and Jobsite Humidity
Standard facing veils lose strength and wrinkle when exposed to rain, ambient humidity, or water-based binder sprays. SAFT40 features a thermosetting resin binder system that maintains ≥ 60% Machine Direction tensile strength after boiling water exposure. This moisture resistance keeps facing panels flat without sagging or peeling in damp installation environments.
High Pull Strength Across Hot Thermal Lamination Lines
Weak veils break under web tension when passing through hot lamination tunnels, stopping continuous production. SAFT40 fiberglass tissue maintains longitudinal tensile strength of ≥ 130 N/50mm. This high pull strength prevents web snaps, lowers material scrap, and keeps high-speed board facing lines running continuously.
4. Target Applications & Processing Lines
Mineral Product & Rock Cotton Board Facing
Insulation board factories feed SAFT40 fiberglass facing tissue as an inline top or bottom facing substrate over high-density rock wool, slag wool, and glass wool boards. The fiberglass tissue locks loose surface fibers, provides flame retardancy, and improves board bending stiffness.
Glass Curtain Wall Insulation Backing
SAFT40 serves as a protective exterior surface veil on spandrel insulation panels behind architectural glass curtain walls. The fiberglass facing tissue protects the inner insulation core from weather exposure, prevents air erosion inside ventilated curtain wall cavities, and improves overall fire resistance.
5. Frequently Asked Questions (Technical FAQ)
Q: How does SAFT40 fiberglass facing tissue prevent surface fiber shedding on mineral wool boards?
A: SAFT40 uses a dense, wet-laid glass fiber network bonded with thermosetting resin. Applied directly to the board surface, the fiberglass facing tissue encapsulates loose mineral fibers, stopping dust release and creating a smooth, durable face.
Q: Can SAFT40 handle water-based paint or liquid binder spraying without losing web integrity?
A: Yes. SAFT40 fiberglass tissue uses a water-resistant binder that retains ≥ 70% Machine Direction tensile strength after boiling water exposure. It stays dimensionally stable and flat when passing through wet binder spraying or liquid coating lines.
Q: Why is low moisture content (≤ 1.0%) essential for SAFT40 on hot lamination lines?
A: Excess moisture vaporizes into steam when contacting hot lamination rollers up to 200°C, causing internal blisters, pinholes, and glue delamination. SAFT40 is delivered sealed at ≤ 1.0% moisture content to ensure clean, bubble-free surface adhesion.
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