CN102978966A - Superfine suede fiber leather and preparation method thereof - Google Patents
Superfine suede fiber leather and preparation method thereof Download PDFInfo
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- CN102978966A CN102978966A CN201210594716XA CN201210594716A CN102978966A CN 102978966 A CN102978966 A CN 102978966A CN 201210594716X A CN201210594716X A CN 201210594716XA CN 201210594716 A CN201210594716 A CN 201210594716A CN 102978966 A CN102978966 A CN 102978966A
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- matte
- solid
- superfine fibre
- base
- polyurethane resin
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- 239000010985 leather Substances 0.000 title claims abstract description 50
- 238000002360 preparation methods Methods 0.000 title claims abstract description 26
- 239000007787 solids Substances 0.000 claims abstract description 93
- 229920005749 polyurethane resins Polymers 0.000 claims abstract description 47
- 239000010410 layers Substances 0.000 claims abstract description 43
- 239000002002 slurries Substances 0.000 claims description 37
- 229920001971 elastomers Polymers 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 9
- 239000000049 pigments Substances 0.000 claims description 9
- 238000000034 methods Methods 0.000 claims description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N acetone Chemical group 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Abstract
Description
Technical field
The present invention relates to the superfine fibre technical field, in particular to a kind of matte superfiber leather and preparation method thereof.
Background technology
Common transfer coating leather is generally corium pad pasting and synthetic leather pad pasting in the market, is mainly used in the production of women's shoes and handbag.But the corium pad pasting adopts whole leather selling at exorbitant prices, and waste is serious; And the physical property of synthetic leather pad pasting is excessively low, and is also impracticable.In view of above reason, the matte superfine fibre scalds film leather product becomes the new varieties that are favourably welcome at present.But there are some problems in the technique of preparation matte superfiber leather product, insecure such as the bonding of transfer membrane when the applying transfer membrane, the rear surface out-of-flatness of applying transfer membrane, the matte superfiber leather that obtains wears no resistance, and tearing toughness and peel strength are lower.
Summary of the invention
The present invention aims to provide a kind of matte superfiber leather and preparation method thereof, and the matte superfiber leather of the method preparation has preferably anti-wear performance, higher tearing toughness and peel strength.
To achieve these goals, according to an aspect of the present invention, provide the preparation method of a kind of matte superfiber leather of knowing clearly, may further comprise the steps: base at the bottom of the matte superfine fibre is set; Form the solid printed layers of the height with setting pattern according to setting pattern base at the bottom of the matte superfine fibre; And the solid printed layers of the height transfer membrane of fitting processed, peel off after the cooling, obtain the matte superfiber leather; Wherein, the solid content that is used to form the polyurethane resin slurry of high solid printed layers is 42%～50%, and viscosity is 3000pas～6000pas.
Further, the solid content of polyurethane resin slurry is 48%, and viscosity is 5000pas.
Further, the step of modulation polyurethane resin slurry comprises the process that adds pigment color chips and organic solvent in the polyurethane resin and mix colours and size mixing.
Further, the solid content of polyurethane resin is 50%～55%, and viscosity is 5000pas～7000pas; Organic solvent is acetone.
Further, form at base at the bottom of the matte superfine fibre and to have the step of setting the high solid printed layers of pattern and comprise: by the solid stamp wheel of the height of make-up machine the polyurethane resin slurry is transferred at the bottom of the matte superfine fibre on the base, and with 7～10 m/mins the speed baking oven by 100 ℃～140 ℃, adjust the solid stamp wheel of height of make-up machine and the gap between the rubber rollers, make the little 0.1mm～0.3mm of thickness of base at the bottom of the Gap-Ratios matte superfine fibre.
Further, the step that the applying transfer membrane is processed comprises: utilize make-up machine at the solid printed layers of the height transfer membrane of fitting, adjust the applying mirror roller of make-up machine and the gap of rubber rollers, make the little 0.1mm～0.3mm of thickness of base at the bottom of the Gap-Ratios matte superfine fibre.
Further, the pressure of applying mirror roller is 3MPa～7MPa, and temperature is 100 ℃～140 ℃.
Further, the step of lift-off processing comprises: base is cooled to room temperature at the bottom of will being fitted with the matte superfine fibre of transfer membrane, peels off the counterdie of transfer membrane, obtains the matte superfiber leather.
Further, the thickness of base is 0.8mm～1.4mm at the bottom of the matte superfine fibre.
According to a further aspect in the invention, provide a kind of matte superfiber leather, this matte superfiber leather is for adopting above-mentioned any method to be prepared from.
Use technical scheme of the present invention, by adopt solid content be 42%～50% and viscosity be that the polyurethane resin slurry of 3000pas～6000pas is as the solid printing slurry of height of preparation matte superfiber leather, so that the solid printed layers of the height of preparing can be fully the fine hair of matte superfine fibre is wrapped, and kept preferably caking property, obtained the higher matte superfiber leather of anti tear and peel strength.The matte superfiber leather of the present invention's preparation has kept the physical characteristic of matte superfine fibre itself, so that color and velvet have polytropy in different angles, gradation is abundant.
The specific embodiment
Need to prove that in the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.The below describes the present invention in detail.
The invention provides a kind of preparation method of matte superfiber leather, may further comprise the steps: base at the bottom of the matte superfine fibre is set; Be formed with the solid printed layers of the height of setting pattern according to setting pattern base at the bottom of the matte superfine fibre; And to the processing of fitting of the solid decorative pattern of height, peel off after the cooling, obtain the matte superfiber leather; Wherein, the solid content that is used to form the polyurethane resin slurry of high solid printed layers is 42%～50%, and viscosity is 3000pas～6000pas.
In order to obtain tearing the matte superfiber leather high with peel strength, various selections are carried out in researcher's selection of base and transfer membrane at the bottom of to the matte superfine fibre in the prior art, and hope can be found the material that is more suitable for; Or when forming tack coat, temperature, pressure or the time of printing are carried out various adjustment, with expectation obtain having better ABRASION RESISTANCE, height is torn and the matte superfiber leather of peel strength.The present invention creatively adopt solid content be 42%～50% and viscosity be that the polyurethane resin slurry of 3000pas～6000pas is as the solid printing slurry of the height of preparation matte superfiber leather.Adopt above-mentioned viscosity and range of solid content the polyurethane resin slurry so that the solid printed layers of the height of preparing can ground the fine hair of matte superfine fibre is wrapped preferably, and then guaranteed preferably caking property, obtained tearing the matte superfiber leather higher with peel strength.The matte superfiber leather of the present invention's preparation has kept the physical characteristic of matte superfine fibre itself, so that color and velvet have polytropy in different angles, gradation is abundant.
In addition, polyurethane resin slurry with above-mentioned solid content and viscosity, can preferably the fine hair on matte superfine fibre surface be wrapped up and form the solid printed layers of height of a solid, thereby guaranteed that transfer membrane can entirely be fitted in high consolidating on the printed layers in the follow-up applying step, and then the color on the transfer membrane or design transfer have been consolidated on the printed layers to height.If the solid content in the polyurethane resin slurry is lower than 42%, the decorative pattern of the solid printed layers of the height that then forms is three-dimensional not full, parcel is the fine hair on matte superfine fibre surface incessantly, cause fine hair to puncture transfer membrane, can not get the matte superfiber leather of surfacing, peel off the matte that does not cover transfer membrane behind the transfer membrane in the high solid printed layers gap and can't expose fine hair.On the contrary, if the solid content in the polyurethane resin slurry is higher than 50%, causing the slurry transfer inhomogeneous when printing with high solid wheel, pattern or decorative pattern form small pore easily when oven dry, and simultaneously operation is inconvenient, brings difficulty to production.
In order to obtain having the matte superfiber leather of better anti tear and peel strength, preferably, adopt solid content be 48% and viscosity be that the polyurethane resin slurry of 5000pas prints.
Base is the commercially available prod at the bottom of the matte superfine fibre among the present invention, can be widely used in footwear and wrap, and considers that based on finished product the thickness of base is 0.8mm～1.4mm at the bottom of the matte superfine fibre that adopts among the present invention.
According to a kind of exemplary embodiment of the present invention, the step of modulation polyurethane resin slurry comprises and adds the process that leather pigment color chips and organic solvent are mixed colours and sized mixing in the polyurethane resin.Be suitable for polyurethane resin slurry of the present invention in order to modulate, the solid content of selected polyurethane resin is 50%～55%, and viscosity is 4000pas～8000pas.The polyurethane resin of commonly using when polyurethane resin of the present invention is the preparation synthetic leather.
The shades of colour that needs in order to be met the client, the present invention also adds leather pigment color chips when modulation polyurethane resin slurry, can form abundanter collocation of colour with surperficial transfer membrane, have more three-dimensional effect of decorative patterns and be difficult for simple advantage of imitating, enlarge range of application.Leather pigment color chips of the present invention is the pigment color chips of this area routine.Organic solvent generally adopts acetone.
Behind the polyurethane resin slurry of deployed required color, solid content and viscosity, base forms and has the solid printed layers of the height of setting pattern at the bottom of the matte superfine fibre, this step comprises: the solid stamp wheel of the height by make-up machine is transferred to the polyurethane resin slurry at the bottom of the matte superfine fibre on the base, and with 7～10 m/mins the speed baking oven by 100 ℃～140 ℃, wherein, adjust the solid stamp wheel of height of make-up machine and the gap between the rubber rollers, make the little 0.1mm～0.3mm of thickness of base at the bottom of the Gap-Ratios matte superfine fibre.
Make-up machine of the present invention comprises high solid stamp wheel, baking oven, applying mirror roller and baking oven, and wherein baking oven is arranged between high solid stamp wheel and the applying mirror roller.Generally set the polyurethane resin slurry of pattern by the base printing at the bottom of the matte superfine fibre of high solid stamp wheel according to client's needs, polyurethane resin slurry after the printing only has the solvent in the guarantee slurry at a certain temperature fully to volatilize, therefore the polyurethane resin slurry after the printing need to be passed through oven for drying with certain speed, and then obtain three-dimensional high solid printed layers, i.e. tack coat.Compare with traditional mode of printing, the present invention adopts the printing of high solid stamp wheel to obtain having the decorative pattern of three-dimensional shape, and the decorative pattern of this three-dimensional shape can fully wrap the fine hair on matte superfine fibre surface.
By after the printing of the solid stamp wheel of height at the bottom of the matte superfine fibre base formed and had the solid printed layers of the height of setting pattern or decorative pattern, high solid printed layers has the gap, this gap does not cover high stereoplasm material, exposes base at the bottom of the matte superfine fibre.In order to obtain preferably matte superfiber leather product of color and glossiness, need to adopt transfer membrane to the matte superfine fibre at the bottom of the base processing of fitting.The step of fit processing comprises: utilize make-up machine base at the bottom of the matte superfine fibre to have the high solid printed layers transfer membrane of simultaneously fitting, the gap of control applying mirror roller and rubber rollers in the applying processing procedure makes the little 0.1mm～0.3mm of thickness of base at the bottom of the Gap-Ratios matte superfine fibre.Adjusting simultaneously applying mirror roller pressure is 3MPa～7MPa, and temperature is 100 ℃～140 ℃.
In order to make the final products that obtain have preferably performance, the present invention controls the little 0.1mm～0.3mm of thickness of base at the bottom of the Gap-Ratios matte superfine fibre of applying mirror roller and rubber rollers, if the gap too conference cause transfer membrane can not with the matte superfine fibre on the solid printed layers of height well-bonded, partial pattern or the color that can be bonded in the follow-up strip step on the high solid layer come off with counterdie, cause yield rate to reduce.On the contrary, if the gap of applying mirror roller and rubber rollers is too little, then easy fine hair with base surface at the bottom of the matte superfine fibre overwhelms, and then so that has the solid printed layers crimp of the height of pattern or decorative pattern.
If applying mirror roller pressure is greater than 7MPa then the fine hair on matte superfine fibre surface can be overwhelmed, and with the solid printed layers crimp of the dapple height of tool that forms, the part of exposing fine hair when causing peeling off the transfer membrane counterdie in the solid printed layers gap of height is difficult for peeling off; If the pressure of applying mirror roller is less than 3MPa, then because the too little transfer membrane that causes of pressure can not be well-bonded with the matte superfine fibre, when peeling off the counterdie of transfer membrane, cause the pattern color that is bonded on the high solid printed layers to come off decrease in yield with the counterdie of transfer membrane.It is the heat resistance of the main component nylon that contains in the base at the bottom of considering the matte superfine fibre that temperature is controlled at 100 ℃～140 ℃, if temperature is higher than 140 ℃ the fine hair on matte superfine fibre surface is dissolved, shinny; If temperature is lower than 100 ℃ then can cause the transfer membrane can not be fully and matte superfine fibre bonding, when peeling off, can cause the pattern color that is bonded on the high solid printed layers to come off with counterdie.
Behind the applying transfer membrane decorative pattern on the transfer membrane and color have been transferred on the high solid printed layers, at this moment need the counterdie of transfer membrane is peeled off, the step of peeling off comprises: will be fitted with base cool to room temperature at the bottom of the matte superfine fibre of transfer membrane, peel off the counterdie of transfer membrane, pattern on the transfer membrane or decorative pattern have been transferred on the high solid printed layers like this, obtain matte superfiber leather finished product.
According to a further aspect in the invention, provide a kind of matte superfiber leather, adopted above-mentioned any method to be prepared from., the matte superfiber leather that adopts method of the present invention to prepare do not affect the velvet of matte superfine fibre although passing through step of membrane sticking, the color of product and velvet have various variability in different angles, the product color levels are rich can satisfy client's various demands.
Further specify beneficial effect of the present invention below in conjunction with specific embodiment:
Embodiment 1
The thick matte of 0.8mm base of the ultra-fine end is set, adopt solid content be 50% and viscosity be that the polyurethane resin of 6000pas is sized mixing, adopt acetone as solvent, and in the process of sizing mixing, add leather pigment color chips, obtain solid content and be 44% and viscosity be the polyurethane resin slurry of 3500pas.
The little 0.1mm of thickness of base at the bottom of gap between the high solid stamp wheel of adjustment and the rubber rollers makes it than the matte superfine fibre, by the solid stamp wheel of height the polyurethane resin slurry is transferred at the bottom of the matte superfine fibre on the base, and with 7 m/mins the speed baking oven by 100 ℃, obtain having the solid printed layers of height of decorative pattern or pattern.
The pressure of adjusting the applying mirror roller is 3MPa, and temperature is 100 ℃, and the little 0.1mm of thickness of base at the bottom of the Gap-Ratios matte superfine fibre of applying mirror roller and rubber rollers has transferred to the decorative pattern on the transfer membrane and color on the high solid printed layers through the applying step.Base at the bottom of being fitted with the matte superfine fibre of transfer membrane is cooled to room temperature, peels off the counterdie of transfer membrane, obtain having the matte superfiber leather of fresh colour.
Embodiment 2
The thick matte of 1.1mm base of the ultra-fine end is set, adopt solid content be 55% and viscosity be that the polyurethane resin of 7000pas is sized mixing, adopt acetone as solvent, in the process of sizing mixing, add leather pigment color chips according to client's needs, obtain solid content and be 46% and viscosity be the polyurethane resin slurry of 4500pas.
The little 0.15mm of thickness of base at the bottom of gap between the high solid stamp wheel of adjustment and the rubber rollers makes it than the matte superfine fibre, by the solid stamp wheel of height the polyurethane resin slurry is transferred at the bottom of the matte superfine fibre on the base, and with 7 m/mins the speed baking oven by 110 ℃, obtain having the solid printed layers of height of decorative pattern or pattern.
The pressure of adjusting the applying mirror roller is 4MPa, and temperature is 110 ℃, and the little 0.15mm of thickness of base at the bottom of the Gap-Ratios matte superfine fibre of applying mirror roller and rubber rollers has transferred to the decorative pattern on the transfer membrane and color on the high solid printed layers through the applying step.Base at the bottom of being fitted with the matte superfine fibre of transfer membrane is cooled to room temperature, peels off the counterdie of transfer membrane, obtain having the matte superfiber leather of fresh colour.
Embodiment 3
The thick matte of 1.4mm base of the ultra-fine end is set, adopt solid content be 52% and viscosity be that the polyurethane resin of 6000pas is sized mixing, adopt acetone as solvent, in the process of sizing mixing, add leather pigment color chips according to client's needs, obtain solid content and be 48% and viscosity be the polyurethane resin slurry of 5000pas.
The little 0.2mm of thickness of base at the bottom of gap between the high solid stamp wheel of adjustment and the rubber rollers makes it than the matte superfine fibre, by the solid stamp wheel of height the polyurethane resin slurry is transferred at the bottom of the matte superfine fibre on the base, and with 7.5 m/mins the speed baking oven by 120 ℃, obtain having the solid printed layers of height of decorative pattern or pattern.
The pressure of adjusting the applying mirror roller is 5MPa, and temperature is 110 ℃, and the little 0.2mm of thickness of base at the bottom of the Gap-Ratios matte superfine fibre of applying mirror roller and rubber rollers has transferred to the decorative pattern on the transfer membrane and color on the high solid printed layers through the applying step.Base at the bottom of being fitted with the matte superfine fibre of transfer membrane is cooled to room temperature, peels off the counterdie of transfer membrane, obtain having the matte superfiber leather of fresh colour.
Comparative Examples 1 and 2
All adopt in the Comparative Examples 1 and 2 with embodiment 3 in identical raw material and method, but solid content and the viscosity of the polyurethane resin slurry that adopts differ greatly.Wherein the solid content in the Comparative Examples 1 is 44%, and viscosity is 3500pas; Solid content in the Comparative Examples 2 is 46%, and viscosity is 4500pas.
The polyurethane resin that wherein adopts in embodiment and the Comparative Examples is all bought the grand middle skin Co., Ltd from Wenzhou, and producer's internal number is H-3150.
The matte superfiber leather of preparation in embodiment 1 to 3 and Comparative Examples 1 and 2 is tested, and its test result sees Table 1.
Table 1
As can be seen from Table 1, compare with the matte superfiber leather of the polyurethane resin slurry preparation of adopting other solid content and viscosity, the matte superfiber leather of the polyurethane resin slurry preparation of employing in solid content of the present invention and viscosity scope, have preferably ABRASION RESISTANCE, fold resistance and higher tearing and peel strength, its percentage elongation and burst strength also are better than Comparative Examples.The anti-wear performance of the matte superfiber leather that wherein obtains among the embodiment 3, anti-tortuous performance and tear and peel strength best, compare with corium, its performance difference is very little even be better than corium.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105774164A (en) * | 2016-03-11 | 2016-07-20 | 无锡双象超纤材料股份有限公司 | Preparation method of enamelled-leather-like super-flat mirror surface microfiber |
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| CN101475789A (en) * | 2009-01-22 | 2009-07-08 | 嘉兴禾欣化学工业有限公司 | Preparation of PU binder resin for synthetic leather |
| CN101665675A (en) * | 2009-09-22 | 2010-03-10 | 烟台华大化学工业有限公司 | Method for preparing aqueous polyurethane adhesive and superfine fiber synthetic leather |
| CN102561075A (en) * | 2011-11-08 | 2012-07-11 | 张放 | Surface treatment method by directly sticking transfer film to ultrafine fiber napped leather |
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| CN101475789A (en) * | 2009-01-22 | 2009-07-08 | 嘉兴禾欣化学工业有限公司 | Preparation of PU binder resin for synthetic leather |
| CN101665675A (en) * | 2009-09-22 | 2010-03-10 | 烟台华大化学工业有限公司 | Method for preparing aqueous polyurethane adhesive and superfine fiber synthetic leather |
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| CN105774164A (en) * | 2016-03-11 | 2016-07-20 | 无锡双象超纤材料股份有限公司 | Preparation method of enamelled-leather-like super-flat mirror surface microfiber |
| CN105774164B (en) * | 2016-03-11 | 2018-05-11 | 无锡双象超纤材料股份有限公司 | A kind of imitative coat of paint surpasses the preparation method of flat mirror face woven fabric |
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