CN101545211B - Method for producing emulational leather - Google Patents

Method for producing emulational leather Download PDF

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Publication number
CN101545211B
CN101545211B CN2009101113557A CN200910111355A CN101545211B CN 101545211 B CN101545211 B CN 101545211B CN 2009101113557 A CN2009101113557 A CN 2009101113557A CN 200910111355 A CN200910111355 A CN 200910111355A CN 101545211 B CN101545211 B CN 101545211B
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dimethyl formamide
finished product
nonwoven fabric
colorant
lining
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CN101545211A (en
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黄胜伟
朱巨波
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FUJIAN LANFENG LEATHER MAKING Co Ltd
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FUJIAN LANFENG LEATHER MAKING Co Ltd
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Abstract

The invention provides a method for producing emulational leather by cold pressing treatment to prepare high emulational synthetic leather, which comprises the following steps that: firstly, preparation of basic fabric: non-woven fabric passes through an impregnation groove containing PU resin, dimethylfomamide and a colorant, is subjected to pre-solidification treatment and coated with a layer of a coating material on the surface of the non-woven fabric; the nonwoven fabric passes through a coagulating tank and a rinsing bath to be subjected to solidification and water washing treatment and dried and shaped to manufacture the basic fabric; the surface of release paper is coated with a layer of a surface material containing the PU resin, dimethylfomamide and the colorant through a No.1 coating head; then a layer of a bottom material is coated on the surface material; the surface material and the bottom material are preheated and compounded with the basic fabric; the mixture is subjected to drying treatment to manufacture a semifinished product; the semifinished product is heated to the temperature of between 160 and 190 DEG C and subjected to embossing treatment through a pair of cold pressing rollers; and after the cold pressing treatment, the semifinished product is cooled and furled to manufacture a finished product.

Description

A kind of production method of emulational leather
Technical field
The present invention relates to a kind of production method of emulational leather, its leather of producing is used for fields such as leather shoes, fur clothing or sofa goods.
Background technology
Emulational leather is at clothes, sport footwear, the application in field such as sofa and case and bag more and more widely, this has remedied the rare influence of bringing for relevant manufacturing industry of Animal Skin to a great extent, but the existing PU synthetic leather that is mainly used in sport footwear still has weak point, the semi-finished product that mainly show the PU synthetic leather are by producing resilience after the cold pressing treatment, like this after a period of time is left standstill in the package of PU synthetic leather, its surperficial dermatoglyph is desalinated fuzzy gradually, and when the semi-finished product to the PU synthetic leather carry out the processing of hot pressing dermatoglyph, because the resin non-refractory of PU synthetic leather surface of semi-finished, it is aging that hot-pressing processing can make resin quicken cracking, this is an awkward problem, and is therefore restricting emulation PU synthetic leather and the gap of Animal Skin on fidelity.
Summary of the invention
The object of the present invention is to provide a kind of production method of producing the emulational leather of high emulation synthetic leather by cold pressing treatment.
The technical solution adopted in the present invention is such: a kind of production method of emulational leather comprises the steps:
1) be 210～230g/m, with grammes per square metre 2Nonwoven fabric with the linear velocity of 7～8m/min by containing immersion trough, be equipped with the impregnation material that viscosity is 100～1000cps described containing in the immersion trough, described impregnation material is 100: 400～700: 10 PU portions of resin dimethyl formamide by weight ratio: colorant is formed;
2), will immerse pre-coagulating basin and solidify processing in advance from containing nonwoven fabric that immersion trough comes out, in the pre-coagulating basin dimethyl formamide aqueous solution and fresh water are housed;
3), will solidify nonwoven fabric after the processing in advance by a dispense tip, be 5000～15000 coating medium in its surface coated one deck viscosity, described coating medium is 100: 50～70: 10 PU portions of resin dimethyl formamide by weight ratio: colorant is formed;
4), the nonwoven fabric after step 3 handled is cured by coagulating basin and rinsing bowl successively and handles and washing is handled, and the dimethyl formamide aqueous solution and fresh water are housed respectively in described coagulating basin and the rinsing bowl;
5), the nonwoven fabric after step 4 processing is carried out drying and shaping and make the wet type semi-finished product;
6), be the lining of 2500～3000cps by a dispense tip in its surface coated one deck viscosity with release liners, described lining is 100: 50～70: 10～30 PU portions of resin dimethyl formamide by weight ratio: colorant is formed;
7), be the bed material of 3000～5000cps with release liners by No. two dispense tips coating one deck viscosity on lining, described bed material is 100: 50～70: 10～30 PU portions of resin dimethyl formamide by weight ratio: colorant is formed;
8), the release liners that will be coated with lining and bed material carries out The pre-heat treatment, preheat temperature is 50～80 ℃, then base cloth and bed material is laminated, and dries to handle through baking oven again to make the dry type semi-finished product, oven temperature is 50～80 ℃;
9), after being heated to 160～190 ℃, the dry type semi-finished product carry out embossed by a pair of roller of colding pressing, its surface of roller of colding pressing of an adjacent side with lining is provided with the animal dermatoglyph, and be connected with freezing liquid in this pressure roller and make its surface temperature, make finished product carrying out rolling after the cooling of the semi-finished product after the embossed between 5～8 ℃.
By adopting the aforementioned techniques scheme, the invention has the beneficial effects as follows: because base cloth, lining and bed material adopt special producing technology, the base cloth of being produced has the performance of colding pressing, prepared PU synthetic leather has high-peeling strength, high-tear strength, hydrolysis, excellent properties such as cold-resistant and wear-resisting, particularly has high emulation dermatoglyph effect.
The specific embodiment
Embodiment discloses a kind of production method of emulational leather, comprises the steps:
1) be 220g/m, with grammes per square metre 2Nonwoven fabric with the linear velocity of 7.5m/min by containing immersion trough, be equipped with the impregnation material that viscosity is 500～700cps described containing in the immersion trough, described impregnation material is 100: 450: 10 PU portions of resin dimethyl formamide by weight ratio: yellow colorant is formed;
2), will immerse pre-coagulating basin and solidify processing in advance from containing nonwoven fabric that immersion trough comes out, in the pre-coagulating basin dimethyl formamide aqueous solution and fresh water are housed, when the pre-coagulating basin of nonwoven fabric process, organic solvent dimethyl formamide wherein can be dissolved in the water, and makes that the PU resin obtains solidifying;
3), will solidify nonwoven fabric after the processing in advance by a dispense tip, be 10000～12000 coating medium in its surface coated one deck viscosity of nonwoven fabric, described coating medium is 100: 50: 10 PU portions of resin dimethyl formamide by weight ratio: yellow colorant is formed;
4), the nonwoven fabric after step 3 processing is cured processing and washing processing by coagulating basin and rinsing bowl successively, the dimethyl formamide aqueous solution and fresh water are housed respectively in described coagulating basin and the rinsing bowl, coagulating basin is used to make the PU resin to be cured, and rinsing bowl is used to remove the residual impurity of nonwoven surface;
5), the nonwoven fabric after step 4 handled carries out drying and shaping and makes the wet type semi-finished product, this base cloth has the performance of colding pressing;
6), be the lining of 2500～2700cps by a dispense tip in its surface coated one deck viscosity with release liners, described lining is 100: 60: 15 PU portions of resin dimethyl formamide by weight ratio: yellow colorant is formed;
7), be the bed material of 4000～4500cps with release liners by No. two dispense tips coating one deck viscosity on lining, described bed material is 100: 60: 10 PU portions of resin dimethyl formamide by weight ratio: yellow colorant is formed;
8), the release liners that will be coated with lining and bed material carries out The pre-heat treatment, preheat temperature is 50～80 ℃, then base cloth and bed material is laminated, and dries to handle through baking oven again to make the dry type semi-finished product, oven temperature is 100～110 ℃;
9), after being heated to 175 ± 5 ℃, the dry type semi-finished product carry out embossed by a pair of roller of colding pressing, its surface of roller of colding pressing of an adjacent side with lining is provided with the animal dermatoglyph, and be connected with freezing liquid in this pressure roller and make its surface temperature, make finished product carrying out rolling after the cooling of the semi-finished product after the embossed between 5～8 ℃.
In the foregoing description, the involved coagulating basin of each processing step, rinsing bowl, embossing machine and on the roller of colding pressing all belong to known technology, Gu do not describe the corresponding apparatus structure in detail.

Claims (1)

1. the production method of an emulational leather is characterized in that comprising the steps:
1) be 210～230g/m, with grammes per square metre 2Nonwoven fabric with the linear velocity of 7～8m/min by containing immersion trough, be equipped with the impregnation material that viscosity is 100～1000cps described containing in the immersion trough, described impregnation material is 100: 400～700: 10 PU portions of resin dimethyl formamide by weight ratio: colorant is formed;
2), will immerse pre-coagulating basin and solidify processing in advance from containing nonwoven fabric that immersion trough comes out, in the pre-coagulating basin dimethyl formamide aqueous solution and fresh water are housed;
3), will solidify nonwoven fabric after the processing in advance by a dispense tip, be 5000～15000 coating medium in its surface coated one deck viscosity, described coating medium is 100: 50～70: 10 PU portions of resin dimethyl formamide by weight ratio: colorant is formed;
4), the nonwoven fabric after step 3) handled is cured by coagulating basin and rinsing bowl successively and handles and washing is handled, and the dimethyl formamide aqueous solution and fresh water are housed respectively in described coagulating basin and the rinsing bowl;
5), the nonwoven fabric after the step 4) processing is carried out drying and shaping and make the wet type semi-finished product;
6), be the lining of 2500～3000cps by a dispense tip in its surface coated one deck viscosity with release liners, described lining is 100: 50～70: 10～30 PU portions of resin dimethyl formamide by weight ratio: colorant is formed;
7), be the bed material of 3000～5000cps with release liners by No. two dispense tips coating one deck viscosity on lining, described bed material is 100: 50～70: 10～30 PU portions of resin dimethyl formamide by weight ratio: colorant is formed;
8), the release liners that will be coated with lining and bed material carries out The pre-heat treatment, preheat temperature is 50～80 ℃, then base cloth and bed material is laminated, and dries to handle through baking oven again to make the dry type semi-finished product, oven temperature is 50～80 ℃;
9), after being heated to 160～190 ℃, the dry type semi-finished product carry out embossed by a pair of roller of colding pressing, its surface of roller of colding pressing of an adjacent side with lining is provided with the animal dermatoglyph, and be connected with freezing liquid in this pressure roller and make its surface temperature, make finished product carrying out rolling after the cooling of the semi-finished product after the embossed between 5～8 ℃.
CN2009101113557A 2009-03-27 2009-03-27 Method for producing emulational leather Active CN101545211B (en)

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Families Citing this family (18)

* Cited by examiner, † Cited by third party
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CN102286885B (en) * 2011-06-03 2013-05-08 鹏程实业有限公司 Production method of PU (polyurethane) peeling leather fabric
CN102296470B (en) * 2011-06-10 2013-06-05 泉州万华世旺超纤有限责任公司 Preparation method of printed synthetic leather
CN102359021B (en) * 2011-08-15 2013-12-11 浙江科一合成革有限公司 Skin-imitated synthetic leather, and manufacturing method and apparatus for same
CN102995455A (en) * 2011-09-14 2013-03-27 吴舒克 Production process of anti-radiation PU (Poly Urethane) synthetic leather
CN103031739A (en) * 2011-09-29 2013-04-10 昆山协兴合成革有限公司 Production method of glove leather
CN102517921B (en) * 2012-01-06 2014-06-11 福建兰峰制革有限公司 Method for producing refractive PU synthetic leather
CN103085402B (en) * 2013-02-04 2015-07-08 苏春 High-stimulation fur fabric and its making method
CN103556488B (en) * 2013-09-29 2016-09-28 福建华阳超纤有限公司 A kind of precision instrument and the electric equipment products polishing manufacturing process of cattle bar
CN104499301B (en) * 2014-11-17 2016-05-11 杭州苏威进出囗有限公司 A kind of preparation technology of durability environ mental protective wet type Pu synthetic leather
CN104532600B (en) * 2014-12-02 2016-08-24 福建华阳超纤有限公司 A kind of manufacture method of ventilative moisture absorption TPU super fiber leather
CN105128443A (en) * 2015-08-05 2015-12-09 安徽英特罗斯服饰有限公司 Production technology of transfer film leather
CN106049073B (en) * 2016-06-21 2018-02-06 浙江繁盛超纤制品有限公司 UHMWPE fibre three-dimensionals compound nonwoven cloth is impregnated with the preparation method of the high-strength anti-stab synthetic leather bass of processing through water-base resin
CN106381731B (en) * 2016-08-29 2018-09-07 浙江通天星集团股份有限公司 The manufacture craft of ventilating leather
CN107964805A (en) * 2017-12-26 2018-04-27 泉州静杰企业管理咨询有限公司 Colorful PU Process for producing leather
CN108823998A (en) * 2018-08-10 2018-11-16 福建兰峰制革有限公司 The production method of flannelette synthetic leather
KR102009720B1 (en) * 2018-08-13 2019-08-12 (주) 정산인터내셔널 Man-made leather having excellent air permeability and manufacturing method thereof
CN111926578B (en) * 2020-07-31 2023-02-14 安安(中国)有限公司 Synthetic leather made of four-way stretch material and production method thereof
CN113322684B (en) * 2021-04-25 2022-11-22 佛山市高明尚昂科技有限公司 Artificial leather capable of being embossed directly and preparation method thereof

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