Protection adhesive film SA 75-90

for boats

Economical Low temperature curing (70°C) with long shelf life. SA 75-90 adhesive film is a toughened film unsupported or on a glass carrier with excellent tack and drape characteristics. It offers many advantages over traditional wet lay-up techniques for bonding of composite skins to cores, including; consistent bond-line thickness and weight, high strain to failure, high toughness, handling convenience, controlled flow and an 8 week out-life at ambient temperature (18-22ºC/64- 72ºF). SA75-90 has a flexible cure envelope of 70ºC (158ºF) to 120°C (248ºF). ¬ Designed for bonding prepreg skins to honeycomb and most core types ¬ Compatible with all Gurit Prepreg & SPRINT products ¬ Toughened for impact resistance and peel strength ¬ Controlled flow for maximum bond integrity PREPARATION When preparing the lay-up the film should be removed from the freezer and allowed to thaw in a sealed bag. This may take 6 to 24 hours depending on roll size. This prevents atmospheric moisture from condensing on the film which may cause voiding on cure. SECONDARY BONDING & MULTI-STAGE LAMINATING SA75-90 is ideally suited to improve the bond when laying up prepreg onto pre-cured surfaces. The precured surface must be suitably abraded and cleaned or peel plied before application of 100-200g SA75-90. The adhesive film should be vacuum de-bulked into position to ensure no air is trapped beneath. Subsequent laminates can then be applied as normal. CORE BONDING SA75-90 is ideally suited for core bonding applications. Recommended for use with Gurit Corecell® .