Лако-красочные материалы — производство

A wide variety of melting equipment is available for the processing of hot-melt adhesives, ranging from simple hand-held hot-melt stick dispensers to pneumatic cartridge dispensers or hot-melt drum — or tank-melters. If the molten adhesive is sensitive to oxidation, a shielding inert gas blanket can help to prevent decom­position. After processing, curing one-part hot melts react with moisture from the ambient air, resulting in a higher thermal resistance after curing. Sealed metal cartridges in storing and shipping are used to prevent these adhesives from curing until application. Hot-melt adhesive can be applied to large areas by means of spraying or spin-coating, such as in the packaging industry (Figure 6.25).