Manufacturing Process
DURABOND’s production activities focus on the production of adhesives, which constitutes the most properly chemical aspect of manufacturing. Operations are organised in a discontinuous mode, in batch processes, and are started according to the specific needs of the market.
Adhesives production
The production of adhesives constitutes the most properly chemical aspect of manufacturing. The main adhesives produced are:
They are prepared through the dissolution of solid components in a suitable solvent mixture, loaded into a pressure mixer at room temperature. Loading operations are performed under local exhaust, which is conveyed to an emission point equipped with active carbon filters. After the dissolution step and before discharge for packaging, the adhesive is checked for dry content and viscosity parameters.
They are prepared by dissolving, in suitable solvent mixtures, the polyurethane polymers obtained from the reaction between isocyanates and polyols in pressure reactors at room temperature.
Loading operations are performed under local exhaust, which is conveyed to an emission point equipped with active carbon filters. After the addition of additives and stabilizers, the adhesive is checked for the following parameters: dry content, viscosity, initial heat resistance, gas-chromatographic analysis of the solvents.
The raw materials, dispersed in water, are mixed under slow stirring at room temperature in an atmospheric dissolver, together with small quantities of various additives such as anti-foaming agents, antioxidants and vulcanization catalysts.
Thermoplastic adhesives are solvent-based and consist of SBS rubbers and resins of natural origin. These adhesives are widely used in the furniture and upholstery sector for their quick adhesion and ease of use.
