Lightweight E-glass fabric with an areal weight of 80 g/m² in twill weave for thin laminates and components with curved geometries.
Interglas 05533 with FK 144 finish combines a low fibre contribution per ply with the greater drapability of a twill weave compared with plain-weave fabrics. Suitable for sandwich components, surface reinforcement and smaller GFRP components and panels.
Interglas 05533 with FK 144 finish is a lightweight E-glass fabric in twill weave. With an areal weight of 80 g/m², it enables thin glass-fibre plies and provides good conformability to curved component geometries due to its twill construction.
| Interglas |
05533 |
| Fibre type |
E-glass |
| Areal weight |
80 g/m² |
| Finish |
FK 144 |
| Weave |
Twill |
| Yarn, warp / weft |
EC 9-34 / EC 9-34 |
| Thread count, warp / weft |
12.0 ends/cm / 11.5 picks/cm |
| Width |
100 cm |
Benefits of the Fabric
The low areal weight of 80 g/m² enables thin glass-fibre plies with low additional laminate weight. Identical EC 9-34 yarn in the warp and weft directions, combined with the similar thread counts of 12.0 ends/cm and 11.5 picks/cm, provides a largely uniform fibre distribution in both principal directions.
The main processing advantage over a plain-weave construction is the twill structure. Longer floats and fewer yarn interlacings provide greater drapability, allowing the fabric to conform more readily to curved and more complex component geometries.
The increased drapability is inherently accompanied by lower resistance to yarn displacement than with a comparable plain weave. Care should therefore be taken during cutting and positioning to minimise fabric distortion.
Applications
The 80 g/m² twill fabric is suitable for sandwich components, surface reinforcement and smaller GFRP components and panels. Its particular strength lies in applications where the dry fabric needs to conform to curved or three-dimensional contours.
Typical applications:
- Curved and three-dimensional GFRP components
- Sandwich components and lightweight facing plies
- Surface reinforcement and coverings
- Small GFRP components
- Thin GFRP panels
- Lightweight and model-making applications
Suitable Resin Systems
The glass fabric can be processed with suitable epoxy, polyester and vinyl ester resin systems. Low-viscosity laminating resins are particularly suitable for thin laminates and uniform wet-out of the fabric.
Epoxy resin systems are commonly used for more demanding lightweight and moulded composite components, particularly where high mechanical properties and good adhesion to the respective substrate are required.
Calculated Data for Hand Lay-Up Laminates with 35 Vol.-% Fibre Content
| Resin consumption |
63 g/m² |
| Laminate thickness |
0.088 mm |
| Laminate weight |
143 g/m² |
Benefits of the 100 cm Width
The 100 cm width provides convenient handling for small to medium-sized composite components and curved moulded parts. The fabric can be laid out, cut and adapted to the component geometry efficiently.
Components within the available fabric width can be covered continuously without an additional longitudinal joint.
Technical Notes
Twill Weave
The twill construction has fewer yarn interlacings and longer floats than a plain weave. This makes the fabric more flexible and allows it to conform more readily to curved and three-dimensional component geometries.
Cutting and Positioning
The greater drapability is accompanied by lower resistance to yarn displacement compared with plain-weave fabrics. The dry fabric should therefore be cut, handled and positioned carefully to minimise unwanted yarn distortion.
Resin Application
Apply the resin uniformly and in an amount appropriate for the fabric. Excess resin increases laminate weight and thickness without increasing the fibre content or the fibre-related reinforcing contribution.
Sandwich Structures
The fabric can be used for lightweight facing plies in sandwich structures. The required facing lay-up depends on the core material, component geometry and mechanical loading.
MSDS Interglas Glass fabric (PDF)
