CN102535187A - Production method of crease-free microfiber mirror-surface synthetic leather - Google Patents

Production method of crease-free microfiber mirror-surface synthetic leather Download PDF

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Publication number
CN102535187A
CN102535187A CN2012100030811A CN201210003081A CN102535187A CN 102535187 A CN102535187 A CN 102535187A CN 2012100030811 A CN2012100030811 A CN 2012100030811A CN 201210003081 A CN201210003081 A CN 201210003081A CN 102535187 A CN102535187 A CN 102535187A
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mirror
lining
ultra fine
release paper
synthetic leather
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CN102535187B (en
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黄胜伟
陈武奎
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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 relates to the technical field of production of leather, in particular to a production method of crease-free microfiber mirror-surface synthetic leather which can restore without leaving any crease after an external force vanishes. The production method comprises the following steps of: compounding a microfiber substrate with a hot-melt adhesive TPU (thermoplastic urethane) film through a mirror-surface embossing roller, and forming a layer of crease-free coating film on a surface of microfiber to prepare a microfiber semi-finished product; passing mirror-surface release paper through a coating head 1, a coating head 2 and a coating head 3 in turn so as to coat a surface layer, an intermediate layer and a bottom layer on the surface of the mirror-surface release paper; and preheating the mirror-surface release paper coated with the surface layer, the intermediate layer and the bottom layer, combining the processed semi-finished microfiber product with the release paper coated with the surface layer, the intermediate layer and the bottom layer, and drying the semi-finished product in an oven to obtain a finished product.

Description

A kind of preparation method of not having the ultra fine mirror face synthetic leather of folding line
Technical field
The present invention relates to the manufacture technology field of leather, especially relate to a kind of preparation method of not having the ultra fine mirror face synthetic leather of folding line.
Background technology
In China, people custom will use PU resin and nonwoven fabric to be called PU synthetic leather (abbreviation synthetic leather) as the artificial leather of raw material production.Through constantly research and development; No matter the PU synthetic leather is in product quality, kind; Still all obtained on the output increasing fast, its performance is more and more near natural leather, some performance even surpass natural leather; Reached and the true and false difficult degree of dividing of natural leather, in the mankind's daily life in occupation of crucial status.The PU synthetic leather is said more near the cortex lining from chemical constitution; It reaches soft character without plasticizer, thus it can hardening, become fragile, have advantages such as rich color, decorative pattern be various simultaneously; Price is more cheap than cortex lining again, so receive consumer's welcome deeply.But the existing PU synthetic leather that is mainly used in sport footwear still has weak point; The goods that mainly show the PU synthetic leather can stay tangible folding line or gauffer through bending or distortion back on its surface; And after its external force is removed, can not return to the original state of emulational leather fully, thereby have influence on the outward appearance of goods.
Summary of the invention
Therefore, to the problems referred to above, the present invention provides a kind of preparation method of not having the ultra fine minute surface of folding line, and the ultra fine mirror face synthetic leather of the no folding line that makes can recover former state and can not stay folding line after forces.
For achieving the above object, the present invention realizes through following technical scheme: a kind of preparation method of not having the ultra fine mirror face synthetic leather of folding line comprises following processing step:
(1) will ultra fine base compound through minute surface knurling rolls and PUR TPU film with the linear velocity of 5～6 m/min, there is not the folding line epithelium at ultra fine surperficial formation one deck, make ultra fine semi-finished product;
(2) mirror surface release paper being passed through a dispense tip, is the lining of 2500～3000cps in its surface coated one deck viscosity, and said lining is the PU resin of 100:70～80:10～15 by weight ratio: dimethyl formamide: toner is formed;
(3) mirror surface release paper that has been coated with lining in the step (2) is passed through No. two dispense tips; Its above lining coating one deck viscosity be the middle material of 3000～4000cps, middle material is the PU resin of 100:60～70:10～15 by weight ratio: dimethyl formamide: toner is formed;
(4) mirror surface release paper that has been coated with middle material in the step (3) is passed through No. three dispense tips; Coating one deck viscosity is the bed material of 5000～6000cps on the layered material therein, and bed material is the PU resin of 100:40～50:10～15:5:2 by weight ratio: dimethyl formamide: toner: crosslinking agent: promoter is formed;
The mirror surface release paper that (5) will scribble lining, middle material and bed material carries out The pre-heat treatment, and the ultra fine semi-finished product that will handle then combine with the release liners that scribbles lining, middle material and bed material, dries to handle through baking oven again to make finished product.
Further improve and be: the minute surface knurling rolls temperature in the said step (1) is controlled at 200～220 ℃.
Further improve and be: the The pre-heat treatment temperature in the said step (5) is 60～80 ℃, and be 1min preheating time, and when oven dry was handled, oven temperature was 120～130 ℃, and drying time is 6～7min.
Through adopting the aforementioned techniques scheme; The invention has the beneficial effects as follows: the present invention passes through the proportioning of the prescription of change lining, middle material, bed material, and adopts special technology, makes PUR TPU film curtain coating in ultra fine surface; Form one deck on ultra fine surface and do not have the folding line epithelium; When its with after the mirror surface release paper that scribbles lining, middle material and bed material combines, leather can return to the state before the distortion after forces, and can not stay folding line.
The specific embodiment
Below will combine specific embodiment to specify embodiment of the present invention, how the application technology means solve technical problem to the present invention whereby, and the implementation procedure of reaching technique effect can make much of and implement according to this.
Embodiments of the invention are:
A kind of preparation method of not having the ultra fine mirror face synthetic leather of folding line comprises following processing step:
(1) will ultra fine base compound through minute surface knurling rolls and PUR TPU film with the linear velocity of 5.5m/min, there is not the folding line epithelium at ultra fine surperficial formation one deck, minute surface knurling rolls temperature is controlled at 210 ℃, makes ultra fine semi-finished product;
(2) mirror surface release paper being passed through a dispense tip, is the lining of 2750cps in its surface coated one deck viscosity, and lining is the PU resin of 100:75:12 by weight ratio: dimethyl formamide: toner is formed, and the thickness of the lining that is coated with is 0.15mm;
(3) mirror surface release paper that has been coated with lining in the step (2) is passed through No. two dispense tips; Its above lining coating one deck viscosity be the middle material of 3500cps; Middle material is the PU resin of 100:65:13 by weight ratio: dimethyl formamide: toner is formed, and the thickness of the middle material that is coated with is 0.20mm;
(4) mirror surface release paper that has been coated with middle material in the step (3) is passed through No. three dispense tips; Coating one deck viscosity is the bed material of 5500cps on the layered material therein; Bed material is the PU resin of 100:45:13:5:2 by weight ratio: dimethyl formamide: toner: crosslinking agent: promoter is formed, and the thickness of institute's primer is 0.18mm;
The mirror surface release paper that (5) will scribble lining, middle material and bed material carries out The pre-heat treatment; The The pre-heat treatment temperature is 70 ℃; Be 1min preheating time, and the ultra fine semi-finished product that will handle then combine with the mirror surface release paper that scribbles lining, middle material and bed material, dries to handle through baking oven again to make finished product; Oven temperature is 125 ℃, and drying time is 6min.
Wherein, ultra fine base can be 5～6m/min through the linear velocity of minute surface knurling rolls in the step (1), and the temperature of minute surface knurling rolls is controlled at 200～220 ℃; The viscosity of lining can be 2500～3000cps in the step (2), and the prescription PU resin of lining: dimethyl formamide: the weight ratio of toner can be 100:70～80:10～15; The viscosity of the middle material in the step (3) can be 3000～4000cps, the prescription PU resin of middle material: dimethyl formamide: the weight ratio of toner can be 100:60～70:10～15; The viscosity of bed material can be 5000～6000cps in the step (4), and the prescription resin of bed material: dimethyl formamide: toner: crosslinking agent: the weight ratio of promoter can be 100:40～50:10～15:5:2.
More than the temperature, linear velocity, the weight ratio of various materials, the range of viscosities that relate in each concrete steps be actually the feasible and desirable scope that limits; Use the interior arbitrary numerical value of each span can realize the purpose of inventing; Simultaneously; Equipment that relates in each processing step such as baking oven, minute surface knurling rolls, the first-class genus known technology of coating be not so do concrete description to its structure.
The present invention is through the proportioning of the prescription of change lining, middle material, bed material; And adopt special technology; Make PUR TPU film curtain coating in ultra fine surface, do not have the folding line epithelium at ultra fine surperficial formation one deck, when its with after the mirror surface release paper that scribbles lining, middle material and bed material combines; Leather can return to the state before the distortion after forces, and can not stay folding line.
The above record is merely the embodiment that utilizes this origination techniques content, anyly is familiar with modification, the variation that this creation of this art utilization is done, and all belongs to the claim of this creation opinion, and is not limited to embodiment announcement person.

Claims (3)

1. a preparation method of not having the ultra fine mirror face synthetic leather of folding line is characterized in that, comprises following processing step:
(1) will ultra fine base compound through minute surface knurling rolls and PUR TPU film with the linear velocity of 5～6 m/min, there is not the folding line epithelium at ultra fine surperficial formation one deck, make ultra fine semi-finished product;
(2) mirror surface release paper being passed through a dispense tip, is the lining of 2500～3000cps in its surface coated one deck viscosity, and said lining is the PU resin of 100:70～80:10～15 by weight ratio: dimethyl formamide: toner is formed;
(3) mirror surface release paper that has been coated with lining in the step (2) is passed through No. two dispense tips; Its above lining coating one deck viscosity be the middle material of 3000～4000cps, middle material is the PU resin of 100:60～70:10～15 by weight ratio: dimethyl formamide: toner is formed;
(4) mirror surface release paper that has been coated with middle material in the step (3) is passed through No. three dispense tips; Coating one deck viscosity is the bed material of 5000～6000cps on the layered material therein, and bed material is the PU resin of 100:40～50:10～15:5:2 by weight ratio: dimethyl formamide: toner: crosslinking agent: promoter is formed;
The mirror surface release paper that (5) will scribble lining, middle material and bed material carries out The pre-heat treatment, and the ultra fine semi-finished product that will handle then combine with the release liners that scribbles lining, middle material and bed material, dries to handle through baking oven again to make finished product.
2. a kind of preparation method of not having the ultra fine mirror face synthetic leather of folding line according to claim 1 is characterized in that: the minute surface knurling rolls temperature in the said step (1) is controlled at 200～220 ℃.
3. a kind of preparation method of not having the ultra fine mirror face synthetic leather of folding line according to claim 1; It is characterized in that: the The pre-heat treatment temperature in the said step (5) is 60～80 ℃, and be 1min preheating time, when oven dry is handled; Oven temperature is 120～130 ℃, and drying time is 6～7min.
CN 201210003081 2012-01-06 2012-01-06 Production method of crease-free microfiber mirror-surface synthetic leather Active CN102535187B (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103061157A (en) * 2013-01-24 2013-04-24 南亚塑胶工业（南通）有限公司 Manufacturing method of PU (Poly Urethane) products capable absorbing free formaldehyde
CN103437195A (en) * 2013-08-16 2013-12-11 东莞市雄林新材料科技有限公司 Sewing-free hot melt adhesive TPU-PU leather and preparation method thereof
CN104179033A (en) * 2014-08-01 2014-12-03 陕西科技大学 Production method of functional synthetic leather for mobile phone case
CN104532600A (en) * 2014-12-02 2015-04-22 福建华阳超纤有限公司 Method for producing breathable and moisture-absorbent TPU microfiber leather
CN104594065A (en) * 2015-02-04 2015-05-06 安安(中国)有限公司 Method for producing jacquard synthetic leather
CN105586784A (en) * 2016-03-11 2016-05-18 无锡双象超纤材料股份有限公司 Method for preparing yangbuck mirror microfibers
CN106192432A (en) * 2016-07-27 2016-12-07 福建兰峰制革有限公司 Super fine vacuum pattern absorbing embossed technique
CN107160750A (en) * 2017-04-14 2017-09-15 安徽宝博合成革有限公司 A kind of aqueous/solvent-free minute surface Synthetic Leather preparation technology
CN107904970A (en) * 2017-12-26 2018-04-13 泉州静杰企业管理咨询有限公司 A kind of production technology of stratiform colour crystal PU synthetic leather
CN108316022A (en) * 2018-03-16 2018-07-24 安安(中国)有限公司 A kind of production method of woven fabric Jacquard that inhaling flower technology using vacuum
CN108951182A (en) * 2018-07-13 2018-12-07 广东天跃新材料股份有限公司 Mirror surface woven fabric silicon rubber synthetic leather and its manufacturing technology
CN109706743A (en) * 2018-09-12 2019-05-03 旭川化学（苏州）有限公司 Preparation method of the woven fabric without folding line mirror surface leather
CN110387753A (en) * 2018-04-20 2019-10-29 东莞市高示新材料有限公司 A kind of novel manufacture craft of the one-component solvent-free woven fabric without folding line mirror surface leather

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN101525846A (en) * 2009-03-27 2009-09-09 福建兰峰制革有限公司 Method for producing crease-free leathers
CN102229272A (en) * 2011-04-25 2011-11-02 安安(中国)有限公司 Production process flow and formula of novel TPU (Thermoplastic Polyurethane) synthetic leather

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN101525846A (en) * 2009-03-27 2009-09-09 福建兰峰制革有限公司 Method for producing crease-free leathers
CN102229272A (en) * 2011-04-25 2011-11-02 安安(中国)有限公司 Production process flow and formula of novel TPU (Thermoplastic Polyurethane) synthetic leather

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103061157A (en) * 2013-01-24 2013-04-24 南亚塑胶工业（南通）有限公司 Manufacturing method of PU (Poly Urethane) products capable absorbing free formaldehyde
CN103437195A (en) * 2013-08-16 2013-12-11 东莞市雄林新材料科技有限公司 Sewing-free hot melt adhesive TPU-PU leather and preparation method thereof
CN103437195B (en) * 2013-08-16 2015-01-14 东莞市雄林新材料科技股份有限公司 Sewing-free hot melt adhesive TPU-PU leather and preparation method thereof
CN104179033A (en) * 2014-08-01 2014-12-03 陕西科技大学 Production method of functional synthetic leather for mobile phone case
CN104179033B (en) * 2014-08-01 2016-07-20 陕西科技大学 A kind of cell-phone cover production method of functional synthetic leather
CN104532600A (en) * 2014-12-02 2015-04-22 福建华阳超纤有限公司 Method for producing breathable and moisture-absorbent TPU microfiber leather
CN104594065A (en) * 2015-02-04 2015-05-06 安安(中国)有限公司 Method for producing jacquard synthetic leather
CN104594065B (en) * 2015-02-04 2017-03-22 安安(中国)有限公司 Method for producing jacquard synthetic leather
CN105586784B (en) * 2016-03-11 2018-01-23 无锡双象超纤材料股份有限公司 A kind of preparation method of sheep bar minute surface woven fabric
CN105586784A (en) * 2016-03-11 2016-05-18 无锡双象超纤材料股份有限公司 Method for preparing yangbuck mirror microfibers
CN106192432A (en) * 2016-07-27 2016-12-07 福建兰峰制革有限公司 Super fine vacuum pattern absorbing embossed technique
CN107160750A (en) * 2017-04-14 2017-09-15 安徽宝博合成革有限公司 A kind of aqueous/solvent-free minute surface Synthetic Leather preparation technology
CN107904970A (en) * 2017-12-26 2018-04-13 泉州静杰企业管理咨询有限公司 A kind of production technology of stratiform colour crystal PU synthetic leather
CN108316022A (en) * 2018-03-16 2018-07-24 安安(中国)有限公司 A kind of production method of woven fabric Jacquard that inhaling flower technology using vacuum
CN110387753A (en) * 2018-04-20 2019-10-29 东莞市高示新材料有限公司 A kind of novel manufacture craft of the one-component solvent-free woven fabric without folding line mirror surface leather
CN108951182A (en) * 2018-07-13 2018-12-07 广东天跃新材料股份有限公司 Mirror surface woven fabric silicon rubber synthetic leather and its manufacturing technology
CN109706743A (en) * 2018-09-12 2019-05-03 旭川化学（苏州）有限公司 Preparation method of the woven fabric without folding line mirror surface leather

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PC01 Cancellation of the registration of the contract for pledge of patent right

Granted publication date: 20131218

Pledgee: Bank of China Limited by Share Ltd. Jinjiang branch

Pledgor: Fujian Lanfeng Leather Co.,Ltd.

Registration number: Y2023110000081

PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: A Method for Making Non creased Superfiber Mirror Synthetic Leather

Granted publication date: 20131218

Pledgee: Bank of China Limited by Share Ltd. Jinjiang branch

Pledgor: Fujian Lanfeng Leather Co.,Ltd.

Registration number: Y2024980002648