CN1113979A - Wet polyurethane/langpi fiber artificial leather and its producing method - Google Patents
Wet polyurethane/langpi fiber artificial leather and its producing method Download PDFInfo
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- CN1113979A CN1113979A CN 94105870 CN94105870A CN1113979A CN 1113979 A CN1113979 A CN 1113979A CN 94105870 CN94105870 CN 94105870 CN 94105870 A CN94105870 A CN 94105870A CN 1113979 A CN1113979 A CN 1113979A
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- langpi
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- split leather
- artificial leather
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Abstract
The making method mixes the phyurethane resin, the treated palm fibre fragments, surfactant, pigment, pore regulator and solvent, after defoaming, the mixture, is applied on the surface of cloth matrix, the formed semi product passes through the soaking treatment, hot water washing and foaming treatment, the artificial leather is obtained. The advantages are good tactile impression, high degree of imitation, good permeability, light weight, quick thermolysis and strong water absorbency. It can be used as instep, briefcase, clothes, etc.
Description
The present invention relates to a kind of leatheret and manufacture method thereof, particularly relate to a kind of wet type polyurethanes (PU) leatheret and manufacture method thereof.
So-called on the market at present " PU corium suede " is a kind of leatheret, mainly comprise a dry goods matrix and a polyurethanes coating, this polyurethanes coating is coated on the surface of this dry goods matrix, its purpose is to imitate the sense of touch and the feel of corium (animal animal skin), but, lack quality and sense of touch and its character of corium because its kishke feel only about 40%, is easy to identification, also all not good such as gas permeability, thermal diffusivity, water imbibition etc., therefore and between the corium still have very big gap.
Present method of producing the polyurethanes leatheret comprises the following steps: that roughly polyurethane resin, pigment, pore are adjusted the finished product of with the vacuum defoamation machine bubble being extracted out to prevent to make after agent, dimethyl formamide (hereinafter to be referred as DMF) solvent stir with the mixer mixing produces pin hole, coat with the mixture of coating machine after again that (being coated with in compression pump extraction mode) constitutes embryo material product on the top layer of dry goods matrix, make embryo material product in the cold water collection surface, produce chemical action then and make the surperficial generation of embryo material product thin film through water treatment deaeration; Then make the polyurethanes coating of DMF solvent release embryo material product make the generation foaming layer of embryo material product and become than the flexible semi-finished product of tool in 60-70 ℃ rinsing bowl (hot water storgae) lining.Is uniform in-plane with the wheel that plates with whole the scalding in half-finished surface, again through the oven dry of baking oven modular system and strut typing, cooling wheel cools off and be rolled into the surface grinding of oval tubular, grinder and antifouling processing and steps such as feel and sense of touch processing after get product.
Though the past once the someone attempt animal corium is used in combination with the polyurethanes leatheret to promote its emulation skin, but because the two is difficult to combination, so that do not use any corium fabric in the polyurethanes leatheret in the prior art, it is quite limited that the character of polyurethanes leatheret is improved degree.
The object of the present invention is to provide the polyurethanes leatheret of a kind of corium texture good (at least 70%), adding by animal animal skin part coated split leather fiber (skin powder) makes it have more the emulation skin, also promotes its gas permeability, weight, thermal diffusivity and water imbibition simultaneously.
Another object of the present invention is to provide a kind of method of making above-mentioned polyurethanes leatheret, mainly be that corium coated split leather fiber to animal skin carries out special treatment, improve the associativity of itself and polyurethane resin, and and then improve more than the emulation skin to 70% of polyurethanes leatheret, even up to the degree more than 90%.
Advantages such as sense of touch is good because of having for novel polyurethanes leatheret of the present invention, emulation skin height, good permeability, light weight, rapid heat dissipation and water imbibition are strong, can be used as vamp, suitcase, clothes, and racket handle on twine multiple use such as bar.
Wet polyurethane/langpi fiber artificial leather of the present invention comprises that mainly a dry goods matrix and one is coated on the polyurethanes coating that contains animal skin coated split leather fiber on this dry goods matrix, because the two difficult combination when adding animal skin coated split leather fiber in the poly-in the prior art carbamate resin coating layer, therefore the corium coated split leather fiber of animal skin need carry out preliminary treatment, and in conjunction with the two the time, must use suitable surfactant to improve the associativity between coated split leather fiber and polyurethane resin, and and then improve more than the emulation skin to 70% of polyurethanes leatheret, even up to the degree more than 90%.
On making, wet polyurethane/langpi fiber artificial leather of the present invention is prepared via the two-stage step, wherein the phase I is to obtain and is applicable to coated split leather fiber of the present invention (the coated split leather layer of animal corium): with shaving machine with whole or non-whole animal animal skin (corium) cuts out hide fiber after decolouring, deodorizing (depickling), deproteinization, step process such as the matter of coming unstuck become to be applicable to animal coated split leather fiber of the present invention, and then the coated split leather fibrous finished product with humidity (30 ℃ of normal temperature up and down the time moisture content transfer at 10%-15% approximately) through pulverizer utilize centrifugal principle and via the mesh that varies in size the fiber of a unified specification, its purpose is to make things convenient for the color matching personnel that one foundation is arranged when color matching, and when following coating raw material allotment, make batching accurately, and can make made leatheret quality higher because of easily understanding its moisture content.And polyurethane resin, pigment, pore are adjusted coated split leather fiber fragment and the surfactant that agent, dimethylformamide solvent, aforementioned manner are made in second stage, mix stirring with mixer, wherein the consumption of coated split leather fiber accounts for this mixture about 10%, and the use of surfactant is to make coated split leather fiber and polyurethanes to be easy to combine.Then the bubble in this mixture is extracted out with the vacuum defoamation machine, produce pin hole with the finished product that prevents to make, the mode that mixture after the deaeration is flowed out naturally with stock chest then, for example cotton, Nonwovens be (promptly and this mixing is coated on one, nonwoven fabric) or on the surface of the dry goods matrix of industrial blending base cloth, and then make embryo material product, owing to contain corium coated split leather fiber in the mixture that uses among the present invention, therefore the coating method that must adopt nature to flow out must not use extraction-type rubbing method of the prior art.Make embryo material product in the cold water collection surface, produce chemical action subsequently, and produce thin film on embryo material product surface through water treatment; Then make the polyurethanes cladding layer of DMF solvent release embryo material product, and make embryo material product produce foaming layer and become than the flexible semi-finished product of tool in 70-85 ℃ rinsing bowl (hot water storgae) lining; The washing temperature of this step must be brought up to 70-85 ℃ to promote foaming effect, and reason is that the pore of embryo material product quickens to expand, and the present invention is because of containing the chip of corium coated split leather fiber, so its resin solid content is lower, relatively can quicken foaming effect.Be uniform in-plane with the wheel that plates with whole the scalding in half-finished surface at last, again through the oven dry of baking oven modular system and strut coil into after typing, cooling wheel are cooled off cylindric, behind the surface grinding of grinder and antifouling processing and post-processing steps such as feel and sense of touch processing, get product again.
In one of the present invention preferred embodiment, mainly include three manufacturing process such as preliminary treatment, (2) allotment coating raw material and (3) coating processing of (1) coated split leather fiber, division is as follows:
Embodiment 1
(1) preliminary treatment of coated split leather fiber: the ox-hide coated split leather fiber after Leather Factory's processing is added degreasing agent, and under 30-50 ℃ temperature conditions, flooded 20-30 minute, to reach degreasing effect; Finish and take out ox-hide coated split leather fiber after the impregnation process, and, with pulverizer it is ground into the fiber fragment that differs in size then 100-120 ℃ drying in oven.Wherein, the degreasing agent of impregnation process process interpolation weight ratio is:
Ox-hide coated split leather fiber 100
Water 150-250
Polyglycol ether alkyl phenol degreasing agent
（alkyl?phenol?polyglycolether） 0.1-0.7
(2) allotment coating raw material:
The following row weight ratio of various former materials is stirred into the coating raw material:
Polyurethane resin 100.0
Dimethylformamide (DMF) 50.0-100.0
Filler 0-20.0
Pore is adjusted agent 0-10.0
Pigment (black) 20.0-30.0
Ox-hide coated split leather fiber 5.0-30.0
Surfactant
(the sulfonated grease that isozygotys into) 0.5-3.0
(3) coating processing: above-mentioned coating raw material is removed bubble with the vacuum defoamation machine, naturally the mode that flows out with stock chest is coated on the surface of a dry goods matrix again, in the air-setting groove, raw material is solidified then, and at surface generation thin film, then in 70-85 ℃ rinsing bowl, make DMF solvent release polyurethanes cladding layer, then make it oven dry and strut typing with plate wheel and baking oven modular system, after cooling, coil into oval cartridge type semi-finished product again, at last again with grinder grind table surface layer and antifouling, behind the post-processing steps such as feel and sense of touch processing and finished product.
Have the multifrequency nature that is better than existing polyurethanes leatheret according to the prepared polyurethane/langpi fiber artificial leather of the above embodiment of the present invention, know clearly and be listed in the table below one:
Table one
| Project | PU leatheret of the present invention | Existing PU leatheret |
| Tactile feel, feel | Kishke feel at least 70% | Kishke feel is lower than 30% |
| Gas permeability | Preferable staggered because of including its inner tissue of corium fabric, increase relatively in the space, ventilative good. | Relatively poor inside is PU resin composition entirely, though there is its pore of foaming little. |
| Plastic sense | Preferable (the emulation skin is good) | Higher (the emulation skin is poor) |
| Weight | Gently | Heavy |
| Thermal diffusivity | Comparatively fast, heat radiation well uses the radiating effect on vamp and ready-made clothes remarkable especially | Relatively poor, the heat radiation bad |
| Water imbibition | Force the handle that is used in sporting goods and general article to twine its absorbing sweat and the outstanding tool characteristic of soaking effect on the bar | Relatively poor to be used in the absorbing sweat soaking effect that handle twines on the bar poor, easily makes the PU leatheret top layer of staff gripping place produce wet and slippery phenomenon |
As seen from the above table, multiple advantages such as that wet type polyurethanes leatheret of the present invention is compared with existing polyurethanes leatheret is good with kishke feel, good permeability, plastics texture is low, material light, rapid heat dissipation, water imbibition height, the utmost point is applicable on the multiple uses such as shoes, suitcase, clothes, racket.
In sum, the present invention sees through suitable processing via the adding of animal coated split leather fiber and between coated split leather fiber and polyurethane resin makes the emulation skin of existing polyurethanes leatheret significantly improve, and has enlarged the usability and the scope of application of existing polyurethanes leatheret because of the improvement of character.
Claims (8)
1, a kind of manufacture method of wet polyurethane/langpi fiber artificial leather is characterized in that comprising the following steps:
Preparation is through the animal coated split leather fiber fragment of suitable pre-treatment;
Polyurethane resin, above-mentioned coated split leather fiber fragment, surfactant, pigment, pore are adjusted deaeration after agent and the solvent, and coat on the surface of a dry goods matrix and form embryo material product;
Make embryo material product generation chemical action and form film from the teeth outwards through the immersion processing with water;
Make the polyurethanes cladding layer of solvent release embryo material product with the hot water water wash procedures, and produce foaming layer, and become the flexible semi-finished product of a tool; And
This surface of semi-finished is carried out post processor.
2, the method for claim 1 is characterized in that, the pre-treatment system of this animal coated split leather fiber comprises decolouring, deodorizing, deproteinization, the matter of coming unstuck and defatting step.
3, the method for claim 1 is characterized in that, employed solvent is a dimethyl formamide.
4, the method for claim 1 is characterized in that, the post processor that described semi-finished product carried out comprise whole scald, oven dry, typing, cooling, surface grinding, antifouling processing and feel and sense of touch treatment step.
5, the method for claim 1 is characterized in that, described application step is the mode that flows out naturally with stock chest and being coated with on the surface that imposes on this dry goods matrix.
6, the method for claim 1 is characterized in that, described hot water water wash procedures is to carry out in 70-85 ℃ warm water.
7, leatheret as claimed in claim 1 is characterized in that, described dry goods matrix is selected from Nonwovens, cotton or industrial blending base cloth.
8, a kind of wet polyurethane/langpi fiber artificial leather of making by the described method of one of claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94105870 CN1113979A (en) | 1994-05-24 | 1994-05-24 | Wet polyurethane/langpi fiber artificial leather and its producing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94105870 CN1113979A (en) | 1994-05-24 | 1994-05-24 | Wet polyurethane/langpi fiber artificial leather and its producing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1113979A true CN1113979A (en) | 1995-12-27 |
Family
ID=5032218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94105870 Pending CN1113979A (en) | 1994-05-24 | 1994-05-24 | Wet polyurethane/langpi fiber artificial leather and its producing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1113979A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003004761A1 (en) * | 2001-07-02 | 2003-01-16 | Shiyin Han | Production of regenerated leather by dry method |
-
1994
- 1994-05-24 CN CN 94105870 patent/CN1113979A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003004761A1 (en) * | 2001-07-02 | 2003-01-16 | Shiyin Han | Production of regenerated leather by dry method |
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