Vitel® 4400B2 is a thermoplastic, high molecular weight, aromatic, linear saturated polyester resin. It is a crystalline polymer with moderate elongation and tensile strength. Due to the chemical composition, V4400B2 attains full, crystalline physical properties after several weeks at room temperature following application. Various techniques can be used to increase the rate of V4400B2 crystallization. This resin can be used as an extruded film form adhesive for thermal bonding.