Processing device for superfine fiber synthetic leather substrate with single-side compact filling layer and polyurethane filling process thereof

Abstract

The invention discloses a processing device for a superfine fiber synthetic leather substrate with a single-side compact filling layer and a polyurethane filling process thereof. The device comprises a traction walking mechanism for drawing a superfine fiber non-woven fabric to walk; a feeding mechanism and an upper extruding material filling mechanism are successively distributed along the walking direction of the superfine fiber non-woven fabric of the traction mechanism; the upper extruding material filling mechanism comprises at least two lower support guide rollers arranged at interval along the walking direction of the superfine fiber non-woven fabric; an upper extruding material pinch roller is rotatably arranged between adjacent lower support guide rollers and cooperates with the superfine fiber non-woven fabric on the traction mechanism in extrusion contact; and the upper extruding material pinch roller and a feeding port are located on the same side of the superfine fiber non-woven fabric of traction mechanism. One side extrusion filling through the device can enable the superfine fiber synthetic leather substrate with compact surface, overall soft but unflagging physical property and handle; the performance of the superfine fiber synthetic leather substrate can be comparable to natural leather; therefore, the invention can promote high-end application of superfine fiber synthetic leather.

Description

technical field [0001] The invention belongs to the technical field of artificial synthetic leather, and specifically refers to a processing device and a processing technology of a superfine fiber synthetic leather base cloth with a dense filling layer on one side. Background technique [0002] Traditional natural leather is composed of collagen fibers, which are divided into grain layer, transition layer and reticular layer. Each layer is continuously transitioned together, and from the grain layer to the reticular layer, it has continuous changes in fiber fineness, weaving structure and density. , so as to achieve the good performance and feel of natural leather surface compact, soft but not loose. [0003] At present, the structure of ordinary microfiber synthetic leather is generally divided into two layers: the surface layer and the base layer (also known as the base fabric). It is a PU film structure. For physical and simulation considerations, the surface layer is ge...

AI Technical Summary

Problems solved by technology

Therefore, if the compact effect of the surface is pursued, the entire base layer must be densely filled with polyurethane, which will cause the overall stiffness of the product and affect the comfort; on the contrary, if the softness of the overall feel is fully considered, the entire base must be required If the layer is low and densely filled with polyurethane, it will lead to loose shells on the surface of the product and poor peel strength, which will affect the apparent use effect

Therefore, the existing superfine fiber synthetic leather still does not possess the tight surface, soft but not loose performance and feel of natural leather, which limits the application of superfine fiber synthetic leather in fields such as high-end clothing and high-grade leather shoes and bags.

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