Manufacturing of regenerated leather

20th Mar 2021

The invention refers to a method of manufacturing recycled leather from waste leather. This method is characterized by consisting of the following steps:

(1) Peeling and manufacturing the yarn.

(2) Add and mix auxiliary ingredients.

(3) Mesh coating;

(4) Preset needles.

(5) Hot melt adhesive;

(6) Squeezing and cooling.

Compared with the normal wet process, the patented process has the advantages of being clean, low in power consumption, saving water and improving the quality of leather products. The recycled leather work piece is prepared by hot pressing with a chrome scraper and an environmentally friendly polyurethane water-based material. The effects of the WPU / chrome scraping ratio on the billet performance have been studied by mechanical property testing, dynamic thermal analysis, thermal weight analysis, and differential scanning calorimetric.

This type of leather making procedure also includes emitting electron microscopy. For this reason, ultimately, when it comes to making widgets, regenerated leather is better than real leather. Regenerated leather is easy to cut and sew, seams are seamless. These leather products are tough, smooth and are generally cheaper than real leather products. Some manufacturers add a layer of polyurethane to the laminated leather and make it stand out to give it a real leather texture. Most of these leather types contain up to one fifth of real leather. In addition, the addition of paraffin microcapsules has provided regenerated skin with the ability to retain heat and regulate temperature.

The results showed that strong surface interactions were obtained with regenerated skin embryos. This is likely due to the formation of hydrogen bonds and the entanglement between the WPU and the scalp. In this way a WPU / shaved leather blend with good mechanical properties, thermal stability, heat storage capacity and temperature control were obtained.  For this reason, it is affordable and looks just like real leather. Second, regenerated leather is manufactured in factories. Due to its durable properties, it is usually water-resistant, durable and easy to clean.

Hence, a user of regenerated leather can get good usability. However, breathability remains the main problem of this type of leather in many cases. This type of leather is generally the cheapest. Researchers are proposing ways to efficiently prepare recycled leather using chrome chips. The results showed that recycled leather could be an alternative to split skin. In order to improve the poor mechanical properties of collagen fibers, researchers have found that recycled skin embryos or semi-finished products have high tensile strength, heat stability and heat storage using flakes.

Chrome leather and water-based polyurethane as raw materials. This type of leather is actually a mixture of real leather and synthetic leather. It is made from scrap and fiber from real leather treatment mixed with polyurethane binder. Capacity is increased due to hydrogen bonds and entanglement between WPI and chip leather. Another method for direct use is to prepare chromium-containing waste leather conductive materials, such as energy storage devices, semiconductors, and electrical catalysts. At last, the process of surface treatments such as color adjustment and surface design printing are done by manufacturers.