Lascaux Heissiegelkleber 375 P (4021)

Lascaux is bringing the tried and tested heat-seal adhesive 375 – a further development from BEVA – in a new formulation. The new heat-seal adhesive 375 P has been successfully tested by well-known experts. Important innovations: - Instead of the previous toluene, the HSK 375 P now contains the much less toxic solvent Propylal. This means that there is no longer any health risk when using it. In addition, the flash point of the new solvent is significantly higher. - The HSK 375 P is ready to use at the same concentration and is easier to handle. It is pasty and can be applied directly. There is no need to heat it in a water bath and the adhesive does not necessarily have to be diluted. - Solubility: We recommend the solvent Propylal, which is available from Lascaux. - The other technical properties remain unchanged.

Application Instructions:
Hot-seal adhesive (Heissiegelkleber) 375 is applied using a brush, roller or spray gun. For most of the work, Hot-Seal Adhesive 375 is slightly warmed up in a water bath and thinned approx. 2:1 to 1:1 with special boiling spirit 100/140 so that a creamy paste is obtained at room temperature. Hot-seal adhesive 375 is applied cold or warm (heat increases penetration). For spray application, it is advisable to dilute Hot-Seal Adhesive 375 with toluene in order to reduce the viscosity.

Only after complete evaporation (approx. 12-24 hours) of all solvents contained can the doubling or sealing be carried out properly. In the case of doubling, hot-seal adhesive 375 is applied either to the doubling canvas or to an intermediate carrier (e.g. polyester fleece). The completely dried hot-seal adhesive 375 layer is sealed at approx. 62-65 °C on the heating table under a slight vacuum or using an iron or a hot air gun. The heat activation can also only take place after days or weeks.

To fix and consolidate primers and paint layers, Hot-Seal Adhesive 375 is preferably diluted 1:4 with White Spirit, or, if compatibility is given, with toluene for better penetration (warm solutions also improve penetration). Sealing after complete drying at 62-65 °C and under slight pressure. Dismantling can be done either with heat or with solvents such as acetone or special boiling point petrol 100/140.