Method for manufacturing ecotypic artificial leather or leather-like and automated manufacturing line thereof

A method for manufacturing artificial leather comprising the steps of:

• utilizing a conveyor to convey a release paper having predesigned grains along a predesigned direction,
• utilizing a spray coating device to spray coat the release paper with a water based finishing material,
• drying the spray coated release paper in a drying device to form an incompletely solidified surface layer on the release paper,
• spray coating the incompletely solidified surface layer with reactive solvent-free multicomponent polymers to form a foaming layer on the surface layer using a multicomponent spray reaction injection molding (RIM) device and special spray guns which perform mixing, spraying and cleaning at the same time in a closed spray chamber system,
• delivering a substrate layer by a conveyor,
• pressing the substrate layer, the foaming layer in which foaming and coagulating of the multicomponent polymers are still occurring, and the incompletely solidified surface layer to bond them together as a laminate by using a roller,
• heating the laminate to completely solidify the substrate, foaming layer and surface layer together as an integral laminate,
• cooling the laminate after heating, and
• stripping the release paper from the surface layer to form the artificial leather.