2 Method of manufacturing artificial leather using two-component type non-solvent polyurethane adhesive

摘要

The present invention relates to a process for producing an artificial leather by bonding a fibrous substrate layer (F) and a surface skin layer (S) using a two-component type non-solvent adhesive which is a mixture of a hydroxy-terminated urethane prepolymer, a diisocyanate crosslinking agent, , The hydroxy-terminated urethane prepolymer and the diisocyanate crosslinking agent, which are components of the two-part type solvent-free adhesive, are supplied to a dispenser 4 provided at the tip of the coater 7 in a state of being separated from each other, Is applied on the surface skin layer (S) to form a non-solvent adhesive layer (A).A disposable static mixer 4b without a forced stirring device is attached to the lower end of the mixing feeder (dispenser 4).In the present invention, since the adhesive coating is performed at a constant temperature and viscosity, the quality is uniform and the coating is performed simultaneously with the mixing of the raw materials.The artificial leather to which the solvent-free adhesive is applied according to the present invention is an eco-friendly material in which volatile organic compounds (VOCs) are drastically reduced, and is particularly useful for furniture and automobile interior materials.