CN106192441A - A kind of production method of microfiber leather - Google Patents
A kind of production method of microfiber leather Download PDFInfo
- Publication number
- CN106192441A CN106192441A CN201610700315.6A CN201610700315A CN106192441A CN 106192441 A CN106192441 A CN 106192441A CN 201610700315 A CN201610700315 A CN 201610700315A CN 106192441 A CN106192441 A CN 106192441A
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- China
- Prior art keywords
- polyurethane resin
- working solution
- woven fabrics
- production method
- polyurethane
- Prior art date
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- 239000010985 leather Substances 0.000 title claims abstract description 38
- 229920001410 Microfiber Polymers 0.000 title claims abstract description 32
- 239000003658 microfiber Substances 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 91
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000012224 working solution Substances 0.000 claims abstract description 54
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 44
- 239000000835 fiber Substances 0.000 claims abstract description 38
- 238000005470 impregnation Methods 0.000 claims abstract description 26
- 239000007787 solid Substances 0.000 claims abstract description 26
- 238000005096 rolling process Methods 0.000 claims abstract description 22
- 229920002635 polyurethane Polymers 0.000 claims abstract description 16
- 239000004814 polyurethane Substances 0.000 claims abstract description 16
- 238000004513 sizing Methods 0.000 claims abstract description 15
- 238000002360 preparation method Methods 0.000 claims abstract description 12
- 238000007711 solidification Methods 0.000 claims abstract description 9
- 230000008023 solidification Effects 0.000 claims abstract description 9
- 238000010422 painting Methods 0.000 claims abstract description 8
- 239000002131 composite material Substances 0.000 claims abstract description 7
- 238000009987 spinning Methods 0.000 claims abstract description 7
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 69
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 60
- 238000003756 stirring Methods 0.000 claims description 46
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 30
- 239000004744 fabric Substances 0.000 claims description 25
- 239000013530 defoamer Substances 0.000 claims description 24
- 229920001684 low density polyethylene Polymers 0.000 claims description 14
- 239000004702 low-density polyethylene Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 239000012752 auxiliary agent Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 229920002292 Nylon 6 Polymers 0.000 claims description 9
- 238000009941 weaving Methods 0.000 claims description 9
- 239000010410 layer Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000009835 boiling Methods 0.000 claims description 5
- 239000011247 coating layer Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 150000001412 amines Chemical class 0.000 claims description 2
- FYHXNYLLNIKZMR-UHFFFAOYSA-N calcium;carbonic acid Chemical compound [Ca].OC(O)=O FYHXNYLLNIKZMR-UHFFFAOYSA-N 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 150000001336 alkenes Chemical class 0.000 claims 1
- 230000035699 permeability Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000047 product Substances 0.000 description 9
- 239000000203 mixture Substances 0.000 description 5
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 3
- 235000011613 Pinus brutia Nutrition 0.000 description 3
- 241000018646 Pinus brutia Species 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000003811 curling process Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000004043 dyeing Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002649 leather substitute Substances 0.000 description 2
- 238000011002 quantification Methods 0.000 description 2
- 102000008186 Collagen Human genes 0.000 description 1
- 108010035532 Collagen Proteins 0.000 description 1
- JJLJMEJHUUYSSY-UHFFFAOYSA-L Copper hydroxide Chemical compound [OH-].[OH-].[Cu+2] JJLJMEJHUUYSSY-UHFFFAOYSA-L 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 229920001436 collagen Polymers 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 229940008099 dimethicone Drugs 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- -1 poly-ammonia Ester Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0011—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using non-woven fabrics
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
- D06B3/10—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics
- D06B3/18—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics combined with squeezing, e.g. in padding machines
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0043—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers
- D06N3/0052—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers obtained by leaching out of a compound, e.g. water soluble salts, fibres or fillers; obtained by freezing or sublimation; obtained by eliminating drops of sublimable fluid
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The present invention relates to the production method of a kind of microfiber leather, comprise the following steps: 1) spinning of composite fibre；2) making of non-woven fabrics；3) sizing of non-woven fabrics；4) preparation high solids content, full-bodied polyurethane resin working solution；5) painting of polyurethane resin working solution is scraped；6) preparation low-solid content, low viscous polyurethane resin working solution；7) the impregnation tandem rolling of polyurethane resin working solution；8) polyurethane solidification；9) toluene decrement treatment.There is soft handle compared with prior art, the feature that with a good drape effect, breathable moisture permeability is strong.
Description
Technical field
The present invention relates to microfiber synthetic leather technical field, the production method of a kind of microfiber leather.
Background technology
Along with world market is increasingly tighter to the resistance of animal skins goods and environmental regulation, microfiber leather because of produce environmental protection without
The indexs such as pollution, heavy metal can reach the requirement of European Union, and increasing travelling trader begins to use micro fiber leather to replace corium to be applied to
High-end product.Microfiber leather is mainly made up of chemical fibre, and superfine fibre simulates collagen fiber, its line at composition with configuration aspects
Density and distribution thereof are closer to natural leather, because the performance of its excellence makes super fiber leather be provided with the outward appearance being similar to corium with interior
In structure, and microfiber leather base fabric uses superfine fibre, good springiness, and intensity is high, soft, good permeability, high-grade synthetic leather
Many physical properties substantially exceeded natural leather, therefore at present microfiber leather sport shoes, sofa, automotive trim, case and bag,
Ball production field such as grade is used widely.Along with the raising of market demands, the quality for microfiber leather has had more and more higher
Requirement, particularly in the production of sport shoes, the microfiber leather produced due to traditional microfiber leather production method is breathed freely
Property and poisture-penetrability poor, cause microfiber leather application sport shoes field limited, and the microfiber leather thus resulted in hang down sense bad, easily
Occur that gauffer, surface pine, base fabric are internal and send out the shortcoming such as not enough empty, elastic, have a strong impact on the comfort level of sport shoes, quality, external
Attractive in appearance and wear the life-span.
Summary of the invention
The present invention proposes the production method of a kind of microfiber leather.
The technical scheme is that and be achieved in that: the production method of a kind of microfiber leather, it is characterised in that include with
Lower step:
1) spinning of composite fibre: spin out islands-in-sea bicomponent fibre, fabric of island-in-sea type for raw material with nylon 6 and Low Density Polyethylene
Island component in composite fibre is nylon 6, and sea component is Low Density Polyethylene；
2) making of non-woven fabrics: produce average grammes per square metre 400g/ through needling process with the islands-in-sea bicomponent fibre made by step 1)
The non-weaving cloth of-500g/；
3) sizing of non-woven fabrics: to step 2) the non-weaving cloth heating for preparing, and it is shaped by roll；Sizing thickness
Control at 0.9-1.9；
4) preparation high solids content, full-bodied polyurethane resin working solution: be initially charged dimethylformamide in reactor, then add
Enter defoamer and stir, be subsequently adding calcium carbonate and stir, be eventually adding polyurethane resin and stir；Control dimethyl formyl
The addition mass ratio of amine, defoamer, calcium carbonate and polyurethane resin is 130-140:1-2:90-110:380-420, makes polyurethane
The solid content of resin working solution is 23%-26%, and viscosity is 11000cps-11300cps；Polyurethane resin described herein is China
The MP90E polyurethane resin that big Chemical Co., Ltd. produces；
5) painting of polyurethane resin working solution is scraped: the positive topcoating of non-woven fabrics after sizing scrapes the polyurethane resin obtained by step 4)
Working solution, coating layer thickness is the 1/3-1/2 of nonwoven thickness, forces to be pressed into non-woven fabrics by polyurethane resin working solution by roll
In, the gap between roll is (cloth thickness-0.3mm) ~ (cloth thickness-0.2mm)；Realize the most fixed of polyurethane resin working solution
Amount, it is ensured that the stability of product quality；Force pressure rolling by roll, some polyurethanes resin working solution can be allowed to enter into non-woven fabrics
Intermediate layer, non-woven fabrics intermediate layer can be allowed to become more and to enrich, elasticity is strengthened；
6) preparation low-solid content, low viscous polyurethane resin working solution: be initially charged polyurethane resin total amount in reactor
1/3-1/2, after stirring 1-2h, adds dimethylformamide, defoamer, impregnation auxiliary agent, stirs 8-12min, be subsequently adding carbonic acid
Calcium stirring 50-60min, is eventually adding remaining polyurethane resin, stirs 2-3h；Control dimethylformamide, defoamer, impregnation
The mass ratio that auxiliary agent, calcium carbonate and polyurethane resin add is 700-800:3:6:300-400:1100-1300, and solid content controls
At 16%-20%, viscosity controls at 3000cps-5000cps；Polyurethane resin described herein is that Hua Da Chemical Co., Ltd. is raw
The MP20E polyurethane resin produced；
7) the impregnation tandem rolling of polyurethane resin working solution: the non-woven fabrics after step 5) processes, then through preparing containing step 6)
Polyurethane resin working solution impregnating groove in, impregnation during, simultaneously by multipair roll pressure pressure rolling；Through multistage even
Rolling, the non-woven fabrics positive and negative after impregnation all obtains good infiltration, it is therefore prevented that base fabric sends out sky；
Take the first step to scrape high solids content, full-bodied polyurethane resin working solution in the positive topcoating of non-woven fabrics, roller forced pressure rolling,
And painting is scraped thickness accurate quantification, second step uses low-solid content, low viscous polyurethane resin working solution to be impregnated with non-woven fabrics
Tandem rolling, thus reach to increase density, improve the purpose of every physical index, producing its apparent density of microfiber leather by the method can
Reaching 0.98-1.05g/cm, owing to have employed two-step method production technology, base fabric defines and tightens pine under (upper strata is compacted zone)
(base fabric lower floor is weaker zone), the flexibility of feel is splendid, and kishke feel is strong；
Polyurethane resin in the polyurethane resin working solution that the positive topcoating of first step non-woven fabrics is scraped and used by second step impregnation tandem rolling
All adding calcium carbonate in working solution, described calcium carbonate uses 1200 mesh calcium carbonate, and on the one hand the purpose adding calcium carbonate can rise
To weightening finish, improving to hang down and feel, ensure the effect of sense of touch, on the other hand, the calcium carbonate of high mesh number can affect the solidification of polyurethane resin
State, makes to form microcellular structure during polyurethane resin film forming, adds breathable moisture permeability, formed good when also dyeing for post-treatment
Permeability, and more conducively dye molecule diffusion in base fabric, level-dyeing property, dye property, Color uniformity can become good, expand
The production range in later stage；
8) polyurethane solidification；
9) toluene decrement treatment.
As preferred technical scheme, the mass ratio of nylon 6 described in step 1) and Low Density Polyethylene is 50: 50-60:
40。
As preferred technical scheme, step 2) described in the processing technology parameter request of non-woven fabrics be punch frequency 500-
1500 thorn/min, needling density 1000-2000 thorn/m2, lapping number of plies 25-40 layer and speed 2-5m/min of non-woven fabrics.
As preferred technical scheme, in non-weaving cloth is placed on the baking oven of 130 DEG C by step 3), heat 5-6min.
As preferred technical scheme, under the conditions of rotating speed is 800 turns/min, after step 4) adds defoamer, stir 4-
6min, it is to avoid high rotating speed produces substantial amounts of foam, under the influence of single stepping, add after calcium carbonate, be first 800 turns/min at rotating speed
Under the conditions of stir 8-12min, then under conditions of rotating speed is 1680 turns/min, stir 8-12min, first stirring at low speed, make each material
Obtain preliminary dispersion, in order to increase the uniformity of mixing, then carry out high-speed stirred；20-is stirred after adding polyurethane resin
30min。
As preferred technical scheme, the concrete operations of polyurethane solidification are that the non-woven fabrics after step 7) being processed is by dense
Degree is the dimethylformamide in water of 10%-35%, and regulation temperature, at 20-30 DEG C, makes polyurethane resin solidify.
As preferred technical scheme, the concrete operations of toluene decrement treatment are that product step 8) obtained passes through 80-
The hot toluene of 90 DEG C, is dissolved the Low Density Polyethylene in fiber by roll pressed, then is cleaned by toluene through boiling water, then
Dry, prepare finished product.
Heretofore described defoamer be mainly composed of dimethicone, defoamer can eliminate polyurethane resin work
Bubble in liquid, increases the wellability between polyurethane and fiber, and can prevent the micropore contracting formed during polyurethane resin film forming
Hole.Described impregnation auxiliary agent is the NO.10 that Shenzhen Langtai Biotechnology Technology Co., Ltd. produces, and plays regulation leather finish sense of touch
Effect.
Owing to have employed technique scheme, the present invention has a beneficial effect highlighted below:
1, the present invention takes the first step to scrape high solids content, full-bodied polyurethane resin working solution in the positive topcoating of non-woven fabrics, to roller
Forcing pressure rolling, and painting is scraped thickness accurate quantification, second step uses low-solid content, low viscous polyurethane resin working solution to nothing
Spin cloth impregnation tandem rolling, thus reach to increase density, improve the purpose of every physical index, produce its table of microfiber leather by the method
Seeing density and can reach 0.98-1.05g/cm, owing to have employed two-step method production technology, base fabric defines and tightens that (upper strata is densification
Layer) under pine (base fabric lower floor is weaker zone), the flexibility of feel is splendid, and kishke feel is strong；
2, polyurethane tree in the polyurethane resin working solution that the positive topcoating of first step non-woven fabrics is scraped and used by second step impregnation tandem rolling
All adding calcium carbonate in fat working solution, described calcium carbonate uses 1200 mesh calcium carbonate, and the purpose adding calcium carbonate on the one hand can
Play weightening finish, sense is hung down in raising, do not produce fold, ensure the effect of sense of touch, and on the other hand, the calcium carbonate of high mesh number can affect poly-ammonia
Ester hardening of resin state, makes to form microcellular structure during polyurethane resin film forming, can increase breathable moisture permeability, also contaminate for post-treatment
Good permeability is formed during color, and more conducively dye molecule diffusion in base fabric, level-dyeing property, dye property, color are homogeneous
Property can become good, expand the later stage production range, it is not necessary to add other additives such as levelling agent, penetrating agent, i.e. can reach above-mentioned effect
Really, and breathable moisture permeability is effective, formula is simple, implement convenient, low cost.
Detailed description of the invention
Technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described enforcement
Example is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under not making creative work premise, broadly falls into the model of present invention protection
Enclose.
Embodiment 1
The production method of a kind of microfiber leather, comprises the following steps:
1) spinning of composite fibre: mix by the mass ratio of 50: 50 with nylon 6 and Low Density Polyethylene, pass through screw extruder
Extrusion molten, control temperature be 245 DEG C, through drawing-off, oil, curling process spins out islands-in-sea bicomponent fibre；
2) making of non-woven fabrics: use islands-in-sea bicomponent fibre made by step 1), setting punch frequency 500-1500 thorn/
Min, needling density 1000-2000 thorn/m2, the lapping number of plies 25 layers, speed 2m/min, producing average grammes per square metre is that 400g/ is non-
Woven cloths；
3) sizing of non-woven fabrics: to step 2) non-weaving cloth for preparing is placed on heating 5min in the baking oven of 130 DEG C, subsequently by rolling
It is shaped by roller, and sizing thickness is 0.9；
4) preparation high solids content, full-bodied polyurethane resin working solution: be initially charged dimethylformamide in reactor, then add
Entering defoamer, after stirring 4min, add calcium carbonate under the conditions of rotating speed is 800 turns/min, first is 800 turns/min condition at rotating speed
Lower stirring 8min, then under conditions of rotating speed is 1680 turns/min, stir 8min, it is eventually adding the stirring of MP90E polyurethane resin
20min；The addition mass ratio controlling dimethylformamide, defoamer, calcium carbonate and MP90E polyurethane resin is 130:1:90:
380, the solid content making polyurethane resin working solution is 23%, and viscosity is 11000cps；
5) painting of polyurethane resin working solution is scraped: the positive topcoating of non-woven fabrics after sizing scrapes the polyurethane resin obtained by step 4)
Working solution, coating layer thickness is the 1/3 of nonwoven thickness, in polyurethane resin working solution being forced press-in non-woven fabrics by roll,
Gap between roll is 0.6mm；
6) preparation low-solid content, low viscous polyurethane resin working solution: be initially charged MP20E polyurethane resin in reactor total
The 1/3 of amount, after stirring 1h, adds dimethylformamide, defoamer, impregnation auxiliary agent, stirs 8min, is subsequently adding calcium carbonate stirring
50min, is eventually adding remaining MP20E polyurethane resin, stirs 2h；Control dimethylformamide, defoamer, impregnation auxiliary agent,
The mass ratio that calcium carbonate and MP20E polyurethane resin add is 700:3:6:300:1100, and solid content controls 16%, viscosity control
System is at 3000cps；
7) the impregnation tandem rolling of polyurethane resin working solution: the non-woven fabrics after step 5) processes, then through preparing containing step 6)
Polyurethane resin working solution impregnating groove in, during impregnation, force pressure rollings by the 4 pairs of rolls simultaneously；
8) polyurethane solidification: the non-woven fabrics after step 7) being processed is the dimethylformamide in water of 10% by concentration, adjusts
Joint temperature, at 20 DEG C, makes polyurethane resin solidify；
9) toluene decrement treatment: product step 8) obtained passes through the hot toluene of 80 DEG C, by roll pressed by fiber
Low Density Polyethylene dissolves, and fiber becomes and forms certain space between superfine fibre, and fiber and polyurethane, makes product have
There are the feel of softness and good rebound performance, then through boiling water, toluene cleaned, after drying, excellent micro fiber leather can be prepared
Leather.
Embodiment 2
The production method of a kind of microfiber leather, comprises the following steps:
1) spinning of composite fibre: mix by the mass ratio of 55: 45 with nylon 6 and Low Density Polyethylene, pass through screw extruder
Extrusion molten, control temperature be 260 DEG C, through drawing-off, oil, curling process spins out islands-in-sea bicomponent fibre；
2) making of non-woven fabrics: use islands-in-sea bicomponent fibre made by step 1), setting punch frequency 500-1500 thorn/
Min, needling density 1000-2000 thorn/m2, the lapping number of plies 35 layers, speed 4m/min, producing average grammes per square metre is that 450g/ is non-
Woven cloths；
3) sizing of non-woven fabrics: to step 2) non-weaving cloth for preparing is placed on heating 5min in the baking oven of 130 DEG C, subsequently by rolling
It is shaped by roller, and sizing thickness is 1.4；
4) preparation high solids content, full-bodied polyurethane resin working solution: be initially charged dimethylformamide in reactor, then add
Entering defoamer, after stirring 5min, add calcium carbonate under the conditions of rotating speed is 800 turns/min, first is 800 turns/min condition at rotating speed
Lower stirring 10min, then under conditions of rotating speed is 1680 turns/min, stir 10min, it is eventually adding the stirring of MP90E polyurethane resin
25min；The addition mass ratio controlling dimethylformamide, defoamer, calcium carbonate and MP90E polyurethane resin is 135:1.5:
100:400, the solid content making polyurethane resin working solution is 25%, and viscosity is 12000cps；
5) painting of polyurethane resin working solution is scraped: the positive topcoating of non-woven fabrics after sizing scrapes the polyurethane resin obtained by step 4)
Working solution, coating layer thickness is the 1/3 of nonwoven thickness, in polyurethane resin working solution being forced press-in non-woven fabrics by roll,
Gap between roll is 1.1mm；
6) preparation low-solid content, low viscous polyurethane resin working solution: be initially charged MP20E polyurethane resin in reactor total
The 1/3 of amount, after stirring 1.5h, adds dimethylformamide, defoamer, impregnation auxiliary agent, stirs 10min, be subsequently adding calcium carbonate
Stirring 55min, is eventually adding remaining MP20E polyurethane resin, stirs 2.5h；Control dimethylformamide, defoamer, impregnation
The mass ratio that auxiliary agent, calcium carbonate and MP20E polyurethane resin add is 750:3:6:350:1200, and solid content controls 18%, viscous
Degree controls at 4000cps；
7) the impregnation tandem rolling of polyurethane resin working solution: the non-woven fabrics after step 5) processes, then through preparing containing step 6)
Polyurethane resin working solution impregnating groove in, during impregnation, force pressure rollings by the 6 pairs of rolls simultaneously；
8) polyurethane solidification: the non-woven fabrics after step 7) being processed is the dimethylformamide in water of 25% by concentration, adjusts
Joint temperature, at 25 DEG C, makes polyurethane resin solidify；
9) toluene decrement treatment: product step 8) obtained passes through the hot toluene of 85 DEG C, by roll pressed by fiber
Low Density Polyethylene dissolves, and fiber becomes and forms certain space between superfine fibre, and fiber and polyurethane, makes product have
There are the feel of softness and good rebound performance, then through boiling water, toluene cleaned, after drying, excellent micro fiber leather can be prepared
Leather.
Embodiment 3
The production method of a kind of microfiber leather, comprises the following steps:
1) spinning of composite fibre: mix by the mass ratio of 60: 40 with nylon 6 and Low Density Polyethylene, pass through screw extruder
Extrusion molten, control temperature be 270 DEG C, through drawing-off, oil, curling process spins out islands-in-sea bicomponent fibre；
2) making of non-woven fabrics: use islands-in-sea bicomponent fibre made by step 1), setting punch frequency 500-1500 thorn/
Min, needling density 1000-2000 thorn/m2, the lapping number of plies 40 layers, speed 5m/min, producing average grammes per square metre is that 500g/ is non-
Woven cloths；
3) sizing of non-woven fabrics: to step 2) non-weaving cloth for preparing is placed on heating 6min in the baking oven of 130 DEG C, subsequently by rolling
It is shaped by roller, and sizing thickness is 1.9；
4) preparation high solids content, full-bodied polyurethane resin working solution: be initially charged dimethylformamide in reactor, then add
Entering defoamer, after stirring 6min, add calcium carbonate under the conditions of rotating speed is 800 turns/min, first is 800 turns/min condition at rotating speed
Lower stirring 12min, then under conditions of rotating speed is 1680 turns/min, stir 12min, it is eventually adding the stirring of MP90E polyurethane resin
30min；The addition mass ratio controlling dimethylformamide, defoamer, calcium carbonate and MP90E polyurethane resin is 140:2:110:
420, the solid content making polyurethane resin working solution is 26%, and viscosity is 13000cps；
5) painting of polyurethane resin working solution is scraped: the positive topcoating of non-woven fabrics after sizing scrapes the polyurethane resin obtained by step 4)
Working solution, coating layer thickness is the 1/2 of nonwoven thickness, in polyurethane resin working solution being forced press-in non-woven fabrics by roll,
Gap between roll is 1.6mm；
6) preparation low-solid content, low viscous polyurethane resin working solution: be initially charged MP20E polyurethane resin in reactor total
The 1/2 of amount, after stirring 2h, adds dimethylformamide, defoamer, impregnation auxiliary agent, stirs 12min, be subsequently adding calcium carbonate and stir
Mix 60min, be eventually adding remaining MP20E polyurethane resin, stir 3h；Control dimethylformamide, defoamer, impregnation help
The mass ratio that agent, calcium carbonate and MP20E polyurethane resin add is 800:3:6:400:1300, and solid content controls 20%, viscosity
Control at 5000cps；
7) the impregnation tandem rolling of polyurethane resin working solution: the non-woven fabrics after step 5) processes, then through preparing containing step 6)
Polyurethane resin working solution impregnating groove in, during impregnation, force pressure rollings by the 8 pairs of rolls simultaneously；
8) polyurethane solidification: the non-woven fabrics after step 7) being processed is the dimethylformamide in water of 35% by concentration, adjusts
Joint temperature, at 30 DEG C, makes polyurethane resin solidify；
9) toluene decrement treatment: product step 8) obtained passes through the hot toluene of 90 DEG C, by roll pressed by fiber
Low Density Polyethylene dissolves, and fiber becomes and forms certain space between superfine fibre, and fiber and polyurethane, makes product have
There are the feel of softness and good rebound performance, then through boiling water, toluene cleaned, after drying, excellent micro fiber leather can be prepared
Leather.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (7)
1. the production method of a microfiber leather, it is characterised in that comprise the following steps:
1) spinning of composite fibre: spinning out islands-in-sea bicomponent fibre with nylon 6 and Low Density Polyethylene for raw material, fabric of island-in-sea type is multiple
Island component in condensating fiber is nylon 6, and sea component is Low Density Polyethylene；
2) making of non-woven fabrics: by step 1) made by islands-in-sea bicomponent fibre produce average grammes per square metre 400g/ through needling process
The non-weaving cloth of-500g/；
3) sizing of non-woven fabrics: to step 2) the non-weaving cloth heating for preparing, and it is shaped by roll；
4) preparation high solids content, full-bodied polyurethane resin working solution: be initially charged dimethylformamide in reactor, then add
Enter defoamer and stir, be subsequently adding calcium carbonate and stir, be eventually adding polyurethane resin and stir；Control dimethyl formyl
The addition mass ratio of amine, defoamer, calcium carbonate and polyurethane resin is 130-140:1-2:90-110:380-420, makes polyurethane
The solid content of resin working solution is 23%-26%, and viscosity is 11000cps-11300cps；
5) painting of polyurethane resin working solution is scraped: the positive topcoating of non-woven fabrics after sizing scrapes step 4) obtained by polyurethane resin
Working solution, coating layer thickness is the 1/3-1/2 of nonwoven thickness, forces to be pressed into non-woven fabrics by polyurethane resin working solution by roll
In, the gap between roll is (cloth thickness-0.3mm)～(cloth thickness-0.2mm)；
6) preparation low-solid content, low viscous polyurethane resin working solution: be initially charged polyurethane resin total amount in reactor
1/3-1/2, after stirring 1-2h, adds dimethylformamide, defoamer, impregnation auxiliary agent, stirs 8-12min, be subsequently adding carbonic acid
Calcium stirring 50-60min, is eventually adding remaining polyurethane resin, stirs 2-3h；Control dimethylformamide, defoamer, impregnation
The mass ratio that auxiliary agent, calcium carbonate and polyurethane resin add is 700-800:3:6:300-400:1100-1300, and solid content controls
At 16%-20%, viscosity controls at 3000cps-5000cps；
7) the impregnation tandem rolling of polyurethane resin working solution: through step 5) process after non-woven fabrics, then through containing in steps 6) prepare
Polyurethane resin working solution impregnating groove in, impregnation during, simultaneously by multipair roll pressure pressure rolling；
8) polyurethane solidification；
9) toluene decrement treatment.
2. according to the production method of a kind of microfiber leather described in claim 1, it is characterised in that: step 1) described in nylon 6
It is 50: 50-60: 40 with the mass ratio of Low Density Polyethylene.
3. according to the production method of a kind of microfiber leather described in claim 1, it is characterised in that: step 2) described in non-woven fabrics
Processing technology parameter request be punch frequency 500-1500 thorn/min, needling density 1000-2000 thorn/m2, lapping number of plies 25-
40 layers and speed 2-5m/min of non-woven fabrics.
4. according to the production method of a kind of microfiber leather described in claim 1, it is characterised in that: step 3) in by non-weaving cloth
It is placed on heating 5-6min in the baking oven of 130 DEG C.
5. according to the production method of a kind of microfiber leather described in claim 1, it is characterised in that: step 4) middle addition defoamer
After under the conditions of rotating speed is 800 turns/min, stir 4-6min, add after calcium carbonate, the lowest under the conditions of rotating speed is 800 turns/min
Speed stirring 8-12min, then under conditions of rotating speed is 1680 turns/min, stir 8-12min, stir 20-after adding polyurethane resin
30min。
6. according to the production method of a kind of microfiber leather described in claim 1, it is characterised in that: the concrete behaviour of polyurethane solidification
Work is by step 7) process after non-woven fabrics be the dimethylformamide in water of 10%-35% by concentration, regulate temperature exist
20-30 DEG C, polyurethane resin is made to solidify.
7. according to the production method of a kind of microfiber leather described in claim 1, it is characterised in that: toluene decrement treatment concrete
Operation is by step 8) product that obtains is by the hot toluene of 80-90 DEG C, by roll pressed by the low density polyethylene in fiber
Alkene dissolves, then is cleaned by toluene through boiling water, then dries, and prepares finished product.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107099186A (en) * | 2017-04-25 | 2017-08-29 | 江西展邦科技有限公司 | A kind of aqueous vertical sense auxiliary agent suitable for synthetic leather |
| CN107604533A (en) * | 2017-09-19 | 2018-01-19 | 四川大学 | A kind of elastic force superfine fiber chemical leather and its environment-friendly preparation method |
| CN109763337A (en) * | 2018-12-18 | 2019-05-17 | 上海华峰超纤材料股份有限公司 | Water-proof air-permeable type superfine fibre suede and its preparation method and application |
| CN110804877A (en) * | 2019-11-20 | 2020-02-18 | 上海华峰超纤科技股份有限公司 | Polyurethane impregnating solution and super-thick high-gram-weight superfine fiber synthetic leather base cloth prepared from same |
| CN115162018A (en) * | 2022-08-02 | 2022-10-11 | 山东世安超纤新材料有限公司 | Production method and equipment of high-elasticity polyurethane microfiber leather |
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| CN107099186A (en) * | 2017-04-25 | 2017-08-29 | 江西展邦科技有限公司 | A kind of aqueous vertical sense auxiliary agent suitable for synthetic leather |
| CN107604533A (en) * | 2017-09-19 | 2018-01-19 | 四川大学 | A kind of elastic force superfine fiber chemical leather and its environment-friendly preparation method |
| CN107604533B (en) * | 2017-09-19 | 2019-10-18 | 四川大学 | A kind of elastic superfine fiber synthetic leather and its environment-friendly preparation method |
| CN109763337A (en) * | 2018-12-18 | 2019-05-17 | 上海华峰超纤材料股份有限公司 | Water-proof air-permeable type superfine fibre suede and its preparation method and application |
| CN109763337B (en) * | 2018-12-18 | 2021-09-10 | 上海华峰超纤科技股份有限公司 | Waterproof and breathable superfine fiber suede leather and preparation method and application thereof |
| CN110804877A (en) * | 2019-11-20 | 2020-02-18 | 上海华峰超纤科技股份有限公司 | Polyurethane impregnating solution and super-thick high-gram-weight superfine fiber synthetic leather base cloth prepared from same |
| CN110804877B (en) * | 2019-11-20 | 2022-05-06 | 上海华峰超纤科技股份有限公司 | Polyurethane impregnating solution and super-thick high-gram-weight superfine fiber synthetic leather base cloth prepared from same |
| CN115162018A (en) * | 2022-08-02 | 2022-10-11 | 山东世安超纤新材料有限公司 | Production method and equipment of high-elasticity polyurethane microfiber leather |
| CN115162018B (en) * | 2022-08-02 | 2023-08-15 | 山东世安超纤新材料有限公司 | Production method and equipment of high-elasticity polyurethane microfiber leather |
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