Patent ID: 12247260

DESCRIPTION FOR DRAWINGS WITH REFERENCE NUMERALS

[102] Leather Scrap[104] small cut Pieces[106] Mix with glue[108] Spread in metal frame[110] Compress in hydraulic compressing machine[112] Drying in heat chamber[114] Compressing in heat condition with hydraulic compressing machine[116] Natural drying[118] Splitting[120] Final leather sheet

DETAILED DESCRIPTION OF THE INVENTION

It is to be understood that the present disclosure is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the drawings. The present disclosure is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting.

The present invention relates to a process for re-using scrap leather. More particularly, the present invention relates to the process of converting a waste leather scrap into a leather sheet using biodegradable water-based glue and compression process. Advantageously, the present invention effectively saves time and wastage of leather and save environment from the pollution.

The present invention relates to scrap leather re use which is fully based on Sustainable. And the process for enhancing leather wastage and scrap into beautiful leather product. Further, the present invention able to make any leather scrap into leather sheet from 0.9 mm thickness to 6 mm thickness. The present invention is fully based on Sustainable in which the process from leather scraps to finish leather sheet and its 0% wastage.

The process of converting a waste leather scrap into a leather sheet using biodegradable glue is unique and very fast process which is used to make leather sheet from the scrape Leather and waste Leather which is rejected from the leather company. In the present invention, all kind of leather product is used because its leather sheet can use like leather and bag, belt, shoe small leather bag and all kind of leather product can be manufactured from the obtained leather sheet.

The present invention is based on 0% wastage in which making leather sheet is made out of leather wastage and if we are getting any wastage while making leather sheet those waste is also re used and making the process fully sustainable.

FIGS.1aand1b: illustrate the flow diagram of the process of converting a waste leather scrap into a leather sheet using biodegradable water-based glue according to the present invention.

Fig. la illustrate the steps of converting a waste leather scrap into a leather sheet using biodegradable water-based glue, in accordance with an embodiment of the present invention. In the first step [102], collect leather scraps from the production team, and in the second step [104] cut the collected leather scraps into small pieces, third step [106] mix glue with small pieces of leather scrap, in the fourth step [108] will be spread in particular size metal frame wherein the metal frame size is30/30cm, in the fifth step [110] spread in metal frame compressing the spread leather scrap in a hydraulic compressing machine and making 6 mm to 8 mm cake of leather scrape, in step six [112] drying the leather scrap cake for a period of two hours in a heat chamber [[in]] at a temperature of 45 degrees Celsius and in the step seven [114] again compressing in heat condition with hydraulic compressing machine, in step eight [116] drying the leather scrap cake for a period of 4 to 5 hours at room temperature, in step nine [118] splitting of the leather scrap cake into required thickness, apply backing (reinforcement) as per requirement to make leather product and finally the formation of final leather sheet [120] and drying the leather sheet for a period of 2 to 3 hours for making bag or any leather product.

Fig.2illustrates the flow chart of the process of converting a waste leather scrap into a leather sheet using biodegradable water-based glue, in accordance with an embodiment of the present invention. The various steps involved to simplify the process of making leather sheet used by leather scrap and leather wastage, the main advantage of this invention is to re-use leather scrap and leather wastage mixed with glue to give esthetic and sustain the look of the product. Steps are involved to collect the leather scraps from the production team [202] and cut into small pieces [204], mix glue with small bits of leather scrap [206] and compress in the hydraulic compressing machine, and make6mm cake of leather scrap [208] and then the leather scrap cake has to put in heat chamber at a temperature of 45 degrees Celsius two hours for good bond [210] and then again compress in hydraulic compressing machine [214] and drying the leather scrap cake for a period of 4 to 5 hours at room temperature [216] splitting of the leather scrap cake into required thickness [218]; applying backing (reinforcement) as per requirement to make leather product and finally forming of final leather sheet [220]. Drying the leather sheet for a period of 2 to 3 hours for making the bag and any leather product.

The composition on ingredients of the glue (SW-22), is tabular below:

HazardousComponentsECCAS NumbernumberContentClassificationAcetone200-662-2>=0.1-<=10%F—Highly64-67-1flammable: R11Xi—irritant: R36R66R67Fatty alcohol500-002-6>=0.1-<=5%Xi—Irritant: R41ethoxylate C129002-92-2Isophorone>=0.1-<=5%Xi—Irritant: R37, R43diisocyanatepolymer withmethoxypolyethyleneglycol130341-32-12-Methyl-1,2-<=0.1%T—Toxic: R25benzisothiazol-C—Corrosive: R343(2H)-oneXn—Harmful: R20/212527-66-4Xi—Irritant: R43N—Dangerous for theenvironment: R50

The appearance of the glue (SW-22) is a milky white liquid, and the viscosity of the glue is 4.000-7.000 cp4.500-5.500 cp.

The present invention is clearly advantageous invention effectively saves wastage of leather and saves the environment from pollution.