# US 2021/0276318 A1 · Biodegradable eco-friendly material and manufacturing method there

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- Number: US 2021/0276318 A1
- Document ID: US20210276318A1
- Status: Published application
- Kind: A1
- Application number: 17/197,013
- Filed: 2021-03-09
- Published: 2021-09-09
- Earliest claimed: 2020-03-09
- Assignees: Man Collection Co., Ltd
- Applicants: Man Collection Co., Ltd
- Inventors: Eun Yeong GO
- Web page: https://patentgrep.com/patent/US20210276318A1

## CPC

- B32B 37/14: characterised by the properties of the layers
- B32B 37/24: with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate (B32B37/15 takes precedence)
- B32B 3/30: characterised by a layer formed with recesses or projections, e.g. {hollows, grooves, protuberances, ribs (apertured layer B32B3/266; layer with cavities or internal voids B32B3/26)}
- B32B 5/024: {Woven fabric}
- B32B 5/073: {characterised by the fibrous or filamentary layer being mechanically connected to another layer by sewing, stitching, hook-and-loop fastening or stitchbonding}
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 9/025: {comprising leather}
- B32B 9/047: {made of fibres or filaments}
- B32B 37/06: characterised by the heating method
- B32B 38/06: Embossing
- D06M 15/15: Proteins or derivatives thereof
- D06M 23/06: Processes in which the treating agent is dispersed in a gas, e.g. aerosols (aerosol compositions C09K3/30)
- D06N 3/0006: {using woven fabrics}
- D06N 3/0018: {Collagen fibres or collagen on fibres}
- B32B 2037/1276: {water-based adhesive}
- B32B 2037/148: {whereby layers material is selected in order to facilitate recycling of the laminate}
- B32B 2037/243: {Coating}
- B32B 2038/008: {Sewing, stitching}
- B32B 2255/02: on fibrous or filamentary layer
- B32B 2255/24: Organic non-macromolecular coating
- B32B 2262/062: Cellulose fibres, e.g. cotton
- B32B 2262/148: Woven fabric
- B32B 2307/4023: on the layer surface, e.g. ink
- B32B 2307/4026: within the layer by addition of a colorant, e.g. pigments, dyes
- B32B 2307/406: Bright, glossy, shiny surface
- B32B 2307/412: Transparent
- B32B 2307/7163: Biodegradable
- B32B 2307/724: Permeability to gases, adsorption
- B32B 2307/73: Hydrophobic
- B32B 2317/08: Natural leather
- B32B 2317/10: Natural fibres, e.g. wool, cotton
- D06M 2101/06: cellulosic
- D06M 2200/12: Hydrophobic properties
- D06N 2201/042: Cellulose fibres, e.g. cotton
- D06N 2209/142: Hydrophobic
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- D06M: TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06N: WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR

## Abstract

Provided are a biodegradable eco-friendly material and a manufacturing method thereof. The biodegradable eco-friendly material includes a biodegradable base fabric into which paper mulberry yarn and cotton yarn are mixed and woven, a leather layer made of a biodegradable material attached to one side of the base fabric, and a coating layer attached to the other side of the base fabric. Here, the base fabric may be woven in a state where 74 to 76 parts by weight of the cotton yarn and 24 to 26 parts by weight of the paper mulberry yarn are mixed.

## Claims

### Claim 1

A method for manufacturing a biodegradable eco-friendly material including a biodegradable base fabric 10 into which paper mulberry yarn and cotton yarn are mixed and woven, a leather layer 20 made of a biodegradable material attached to one side of the base fabric 10, and a coating layer 30 attached to the other side of the base fabric 10, the method comprising:
(a) a step of weaving the base fabric 10 including 74 to 76 parts by weight of the cotton yarn, and 24 to 26 parts by weight of the paper mulberry yarn;
(b) a step of forming the coating layer 30 that is a transparent water-repellent coating layer on the base fabric 10 provided in the step (a);
(c) a step of attaching the leather layer 20 made of the biodegradable material to the one side surface of the base fabric 10 provided in the step (a);
(d) a step of aging the base fabric 10 to which the leather layer 20 is attached, provided in the step (c);
(e) a step of performing embossing on a surface of the aged base fabric 10 provided in the step (d);
(f) a step of performing an aqueous binder process onto the embossed surface provided in the step (e); and
(g) a step of performing thermal compression bonding between the base fabric 10 and the leather layer 20 after the step (f),
wherein the base fabric 10 and the leather layer 20 are attached to each other by a water-based adhesive,
wherein the leather layer 20 is formed by a step of crushing cowhide and compressing and bonding the crushed cowhide to be attached to the other side of the base fabric 10, and
wherein the coating layer 30 includes an animal protein component.

### Claim 2 (depends on 1)

The method for manufacturing the biodegradable eco-friendly material according to claim 1, further comprising:
(h) a step of performing a surface dyeing process and a glossing process after the step (g).

### Claim 3 (depends on 1)

The method for manufacturing the biodegradable eco-friendly material according to claim 1,
wherein in the step (a) of weaving the base fabric 10 including the 74 to 76 parts by weight of the cotton yarn and 24 to 26 parts by weight of the paper mulberry yarn, the base fabric 10 is weaved in a state where a part of the paper mulberry yarn or the cotton yarn is coated with a color and a pattern 21 is formed on the surface of the base fabric 10 at the same time as the weaving is completed.