CN102517919A - Leather production method - Google Patents
Leather production method Download PDFInfo
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- CN102517919A CN102517919A CN2011104294068A CN201110429406A CN102517919A CN 102517919 A CN102517919 A CN 102517919A CN 2011104294068 A CN2011104294068 A CN 2011104294068A CN 201110429406 A CN201110429406 A CN 201110429406A CN 102517919 A CN102517919 A CN 102517919A
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Abstract
The invention provides a leather production method, which comprises the following steps of: immersing a non-woven fabric in a polyvinyl alcohol solution with a mass concentration of 3%-5%, and drying the fabric at a temperature of 100-130DEG C; conducting an impregnation treatment on the non-woven fabric; coating a coating material; carrying out curing and rinsing treatments, with the temperature inside a rinsing bath controlled at 60-100DEG C; performing drying, shape setting and rolling-up so as to obtain a base fabric; and finally coating a surface coat and a primary coat, and implementing lamination and preheating, thus obtaining a leather product. The leather produced by the method of the invention has the characteristics of good handfeel, good resilience, as well as breathability and no abnormal odor.
Description
Technical field
The present invention and belong to the leather industry production technical field is specifically related to a kind of production method of leather.
Background technology
Synthetic leather is through The Nomenclature Composition and Structure of Complexes of simulating natural leather and the plastic products that can be used as its substitute material.It is a lamina reticularis with the nonwoven fabric through dipping usually, and micropore polyurethane layer makes as grain layer.Because synthetic leather has multiple premium properties, replaced the natural leather of inadequate resource at present, it is in the application in fields such as clothes, sport footwear, sofa and case and bag more and more widely.
The production craft step of synthetic leather generally comprises: steps such as production batching, wet production, oven dry rolling, middle inspection, dry production and finished product inspection; The immersion liquid of using when wherein the nonwoven fabric impregnation is handled that contains is formed by containing resin pickup, DMF (dimethyl formamide), rerum natura dose and an amount of colorant usually; The coating fluid that uses during the nonwoven surface coating medium by coating resin, DMF, abscess adjustment agent, take off DMF auxiliary agent, stuffing and an amount of colorant and form; In the prior art because to contain the composition content of immersion liquid and coating fluid very unreasonable; Though the synthetic leather of finally processing has the advantage of high hydrolysis resistance, high anti-complications, performances such as the feel of product, elasticity and gas permeability can not get better raising.
Summary of the invention
For inventing the leather production method that the technical problem that will solve provides a kind of comfortable feel, good, the ventilative free from extraneous odour of rebound performance.
For solving the problems of the technologies described above, the technical scheme of the utility model is:
A kind of production method of leather comprises the steps:
(1) immersion of nonwoven fabric and oven dry:
Choose high-density non-woven fabrics, the adding mass percent concentration is after the poly-vinyl alcohol solution of 3%-5% soaks fully, nonwoven fabric to be dried down at 100 ℃～130 ℃;
(2) impregnation of nonwoven fabric is handled:
Nonwoven fabric after above-mentioned (1) oven dry is inserted and contained immersion trough, add weight portion and be 150: 350～500: 10 polyurethane resin: dimethyl formamide: rerum natura reinforcing agent and an amount of colorant are formed contains immersion liquid;
(3) coating medium:
Nonwoven surface coating one deck coating medium after above-mentioned (2) impregnation handled, this coating medium is 100: 40～60: 1: 2 by weight portion: 5: 2 polyurethane resin: dimethyl formamide: abscess adjustment agent: take off the DMF auxiliary agent: stuffing: rerum natura reinforcing agent and an amount of colorant are formed;
(4) cured is handled with washing:
Nonwoven fabric after above-mentioned (3) coating is cured processing and washing processing through coagulating basin and rinsing bowl successively, and temperature is 60～100 ℃ in the rinsing bowl;
(5) with above-mentioned (4) washing after nonwoven fabric carry out drying and shaping again rolling make base cloth;
(6) base cloth that above-mentioned (5) is made is coated with lining, primer, carries out pressing again, oven dry makes leather products.
Take above technical scheme, compared with prior art the beneficial effect that has of the present invention is:
1. owing to soaking, nonwoven fabric dries processing again behind polyvinyl alcohol liquid; Nonwoven fabric after the coating is dissolved out polyvinyl alcohol from nonwoven fabric when washing is handled again simultaneously; Between the fiber of nonwoven fabric and fiber, form abscess, thereby increased the pleasant softness of base cloth.
2. because nonwoven fabric directly is coated with after impregnation is handled, has omitted the oven dry handling procedure, thereby improved the performance of leather aspect feel and resilience.
The specific embodiment
A kind of production method of leather comprises the steps:
(1) immersion of nonwoven fabric and oven dry:
Choose high-density non-woven fabrics, the adding mass percent concentration is after the poly-vinyl alcohol solution of 3%-5% soaks fully, nonwoven fabric to be dried intensity and the feel that this step helps to improve nonwoven fabric down at 100 ℃～130 ℃;
(2) impregnation of nonwoven fabric is handled:
Nonwoven fabric after above-mentioned (1) oven dry is inserted and contained immersion trough, add weight portion and be 150: 350～500: 10 polyurethane resin: dimethyl formamide: rerum natura reinforcing agent and an amount of colorant are formed contains immersion liquid;
(3) coating medium:
With the nonwoven surface coating one deck coating medium after above-mentioned (2) impregnation processing; This coating medium is 100: 40～60: 1: 2 by weight portion: 5: 2 polyurethane resin: dimethyl formamide: abscess adjustment agent: take off the DMF auxiliary agent: stuffing: rerum natura reinforcing agent and an amount of colorant are formed; Abscess adjustment agent, take off DMF auxiliary agent transitivity dose and can select that wherein one or more are used, the powder that stuffing can adopt timber to grind;
(4) cured is handled with washing:
Nonwoven fabric after above-mentioned (3) coating is cured processing and washing processing through coagulating basin and rinsing bowl successively; Temperature is 60～100 ℃ in the rinsing bowl; Polyvinyl alcohol is dissolved in the water again under this temperature; Thereby between the fiber of nonwoven fabric and fiber, form abscess, to increase the soft feel of base cloth;
(5) with above-mentioned (4) washing after nonwoven fabric carry out drying and shaping again rolling make base cloth;
(6) with release liners through a dispense tip at its surface coated one deck lining, said lining is by weight portion polyurethane resin by a certain percentage: dimethyl formamide: colorant is formed;
(7) with release liners through No. two dispense tips coating one deck bed material on lining, this bed material is by weight portion polyurethane resin by a certain percentage: dimethyl formamide: colorant: crosslinking agent: promoter is formed;
The release liners that (8) will be coated with lining and bed material is carried out The pre-heat treatment, and preheat temperature is 50～80 ℃, then base cloth and bed material is laminated, and dries to handle through baking oven again to make synthetic leather, and oven temperature is 100～120 ℃.
The leather of producing by the present invention has good hand touch, good, the ventilative free from extraneous odour characteristics of rebound performance.The place different with the production method of traditional synthetic leather is following 3 points:
1. the nonwoven fabric of good springiness is handled in impregnation and soaked polyvinyl alcohol and oven dry processing before earlier;
2. in the impregnation processing procedure, adopt after the impregnation directly coating and prebake treatment step in the middle of saving;
In washing rinsing bowl in the temperature of water be heated to regulation temperature to dissolve the polyvinyl alcohol in the nonwoven fabric.
Claims (1)
1. the production method of a leather is characterized in that comprising the steps:
(1) immersion of nonwoven fabric and oven dry:
Choose high-density non-woven fabrics, the adding mass percent concentration is after the poly-vinyl alcohol solution of 3%-5% soaks fully, nonwoven fabric to be dried down at 100 ℃～130 ℃;
(2) impregnation of nonwoven fabric is handled:
Nonwoven fabric after above-mentioned (1) oven dry is inserted and contained immersion trough, add weight portion and be 150: 350～500: 10 polyurethane resin: dimethyl formamide: rerum natura reinforcing agent and an amount of colorant are formed contains immersion liquid;
(3) coating medium:
Nonwoven surface coating medium after above-mentioned (2) impregnation handled, this coating medium is 100: 40～60: 1: 2 by weight portion: 5: 2 polyurethane resin: dimethyl formamide: abscess adjustment agent: take off the DMF auxiliary agent: stuffing: rerum natura reinforcing agent and an amount of colorant are formed;
(4) cured is handled with washing:
Nonwoven fabric after above-mentioned (3) coating is cured processing and washing processing through coagulating basin and rinsing bowl successively, and temperature is 60～100 ℃ in the rinsing bowl;
(5) with above-mentioned (4) washing after nonwoven fabric carry out drying and shaping again rolling make base cloth;
(6) base cloth that above-mentioned (5) is made is coated with lining, primer, carries out pressing again, oven dry makes leather products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104294068A CN102517919A (en) | 2011-12-11 | 2011-12-11 | Leather production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104294068A CN102517919A (en) | 2011-12-11 | 2011-12-11 | Leather production method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102517919A true CN102517919A (en) | 2012-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2011104294068A Pending CN102517919A (en) | 2011-12-11 | 2011-12-11 | Leather production method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104562685A (en) * | 2013-10-27 | 2015-04-29 | 江苏国信合成革有限公司 | Water-based impregnation base cloth and preparation method thereof |
| CN104619909A (en) * | 2012-09-14 | 2015-05-13 | 东丽株式会社 | Method for manufacturing sheet-shaped object and sheet-shaped object obtained via said method |
| CN105256602A (en) * | 2015-11-10 | 2016-01-20 | 陕西科技大学 | Manufacturing method for waterborne polyurethane superfine fiber synthetic leather |
| CN106192450A (en) * | 2016-08-31 | 2016-12-07 | 福建博艺材料科技有限公司 | A kind of manufacturing process of wet-type PU synthetic leather |
| CN106269425A (en) * | 2015-06-23 | 2017-01-04 | 泰州市华润纺织品有限公司 | A kind of environment protecting water-based paint is applied to the manufacture method of functional coating cloth |
| CN108411640A (en) * | 2018-04-03 | 2018-08-17 | 浙江丰望环保有限公司 | A kind of leather and preparation method thereof |
| CN111005235A (en) * | 2019-12-04 | 2020-04-14 | 上海华峰新材料研发科技有限公司 | Method for preparing leather base by using high-solid-content blocked polyurethane resin |
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| JPH06340005A (en) * | 1990-12-14 | 1994-12-13 | Scapa Group Plc | Industrial cloth and its production |
| CN1322877A (en) * | 2000-05-10 | 2001-11-21 | 中国人民解放军总后勤部军需装备研究所 | Jungang leather as one superfine synthetic leather and its making process |
| CN101498106A (en) * | 2009-02-14 | 2009-08-05 | 烟台万华超纤股份有限公司 | Mirror face synthetic leather and production method thereof |
| CN101760970A (en) * | 2009-05-16 | 2010-06-30 | 石狮龙祥制革有限公司 | Production method of high-density synthetic leather |
| CN101886315A (en) * | 2009-05-11 | 2010-11-17 | 钱国春 | Manufacturing process of high-emulation chamois leather fabric |
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2011
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH06340005A (en) * | 1990-12-14 | 1994-12-13 | Scapa Group Plc | Industrial cloth and its production |
| CN1322877A (en) * | 2000-05-10 | 2001-11-21 | 中国人民解放军总后勤部军需装备研究所 | Jungang leather as one superfine synthetic leather and its making process |
| CN101498106A (en) * | 2009-02-14 | 2009-08-05 | 烟台万华超纤股份有限公司 | Mirror face synthetic leather and production method thereof |
| CN101886315A (en) * | 2009-05-11 | 2010-11-17 | 钱国春 | Manufacturing process of high-emulation chamois leather fabric |
| CN101760970A (en) * | 2009-05-16 | 2010-06-30 | 石狮龙祥制革有限公司 | Production method of high-density synthetic leather |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104619909A (en) * | 2012-09-14 | 2015-05-13 | 东丽株式会社 | Method for manufacturing sheet-shaped object and sheet-shaped object obtained via said method |
| CN104619909B (en) * | 2012-09-14 | 2017-09-22 | 东丽株式会社 | The manufacture method of tablet and the tablet obtained using the manufacture method |
| US10301770B2 (en) | 2012-09-14 | 2019-05-28 | Toray Industries, Inc. | Process for producing sheet-shaped material and sheet-shaped material obtained by said process |
| CN104562685A (en) * | 2013-10-27 | 2015-04-29 | 江苏国信合成革有限公司 | Water-based impregnation base cloth and preparation method thereof |
| CN106269425A (en) * | 2015-06-23 | 2017-01-04 | 泰州市华润纺织品有限公司 | A kind of environment protecting water-based paint is applied to the manufacture method of functional coating cloth |
| CN105256602A (en) * | 2015-11-10 | 2016-01-20 | 陕西科技大学 | Manufacturing method for waterborne polyurethane superfine fiber synthetic leather |
| CN105256602B (en) * | 2015-11-10 | 2017-06-20 | 陕西科技大学 | A kind of manufacture method of aqueous polyurethane superfine fiber synthetic leather |
| CN106192450A (en) * | 2016-08-31 | 2016-12-07 | 福建博艺材料科技有限公司 | A kind of manufacturing process of wet-type PU synthetic leather |
| CN108411640A (en) * | 2018-04-03 | 2018-08-17 | 浙江丰望环保有限公司 | A kind of leather and preparation method thereof |
| CN111005235A (en) * | 2019-12-04 | 2020-04-14 | 上海华峰新材料研发科技有限公司 | Method for preparing leather base by using high-solid-content blocked polyurethane resin |
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Application publication date: 20120627 |