Лако-красочные материалы — производство

The primary polymers used to generate physically setting hot melts are polyamide resins, saturated polyesters, EVA copolymers, polyolefins, block copolymers (S-B-S or S-I-S) and polyimides [11].

For high-performance adhesives, polyamides, polyesters and polyimides are employed, whereas EVA copolymers and polyolefins are used for commodity and general-purpose hot-melt adhesives.

The most important fields of application for high-performance hot melts are process equipment construction (painted and coated surfaces), in car manufacture (heated seats, hat racks, roof liners), in the building industry (window construction, acoustic ceilings) and the textile industry (textile inserts). General-purpose hot melts are used primarily in the paper and packaging industry (on packaging machines which erect and seal packages, on folding machine gluers, for cigarette paper), for sticky labels (address labels), in bookbinding (adhesive binding) and for the manu­facture of hygienic products (baby diapers).

The polymers determine the properties of the bond-line with regard to adhesion, inner strength and temperature behavior, while various additives are required to ensure their functionality and to confer specific properties to the adhesive (Table 5.2) [12].

5.3.2