webertec force glass sheet

Preparation

Before the application of the webertec force glass sheet, the quality of the substrate has to be checked. The tensile strength has to be tested with a pull-off bond test. For load to be transferred from the glass fibre sheet into the bearing substrate a tensile surface strength of at least 0.4 N/mm2 is required.

The bearing substrate shall be roughened by light grit blasting or sandblasting or grinding. Any unevenness must be tested with a straight edge. Maximum deviation shall be 1mm per 300mm.

The edges of the structural member must be rounded by grinding to achieve minimum radius of 15mm. The substrate shall be cleaned of any dust and the moisture content shall be less than 4%.

Ensure all surfaces are clean and free from any contamination.

Application

webertec force EP primer
The epoxy resin primer must be mixed in accordance with the product data sheet and applied to the prepared substrate. Allow to touch-dry - normally up to 2 hours.

webertec force EP bonding adhesive
The epoxy resin adhesive must be mixed in accordance with the data sheet and applied evenly to the primed substrate.

Immediately after the adhesive is applied, the first layer of glass fibre sheet is applied by hand and pressed into the surface with a rubber roller and squeege.

Another layer of adhesive is applied by brush or roller over the first layer and is pressed into the sheet with a squeege. Additional layers are applied in the same way onto uncured, wet epoxy resin adhesive.

For multiple layers, use the wet lay-up process. Pre-wet the aramid sheet with webertec force EP bonding adhesive and place the wetted-out sheet onto the first coat of adhesive.

Roller and squeege into position, taking care to align the fibres correctly.

Encapsulate this layer with a second coat of webertec force EP bonding adhesive.

Allow the epoxy resin adhesive to fully cure.

Cleaning

Clean tools carefully, using webertec solvent.

Yield

Supplied in 50m length rolls at 680mm width.

Area coverage is 34m2 per roll.