CN107177989B - A kind of flannelette simulation type superfine fiber chemical leather and its clean preparation method - Google Patents
A kind of flannelette simulation type superfine fiber chemical leather and its clean preparation method Download PDFInfo
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- CN107177989B CN107177989B CN201710214225.0A CN201710214225A CN107177989B CN 107177989 B CN107177989 B CN 107177989B CN 201710214225 A CN201710214225 A CN 201710214225A CN 107177989 B CN107177989 B CN 107177989B
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- D06G1/00—Beating, brushing, or otherwise mechanically cleaning or pressure cleaning carpets, rugs, sacks, hides, or other skin or textile articles or fabrics
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- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
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- D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
- D06M13/248—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing sulfur
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- D06M15/693—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural or synthetic rubber, or derivatives thereof
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- D06N2209/00—Properties of the materials
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Abstract
Superfine fiber synthetic leather base cloth is passed through the dipping tank for rubbing liquid equipped with contracting and impregnated, enter back into continous way boarding machine, keep superfine fiber synthetic leather base cloth dry, obtained contracting and rub base fabric by a kind of flannelette simulation type superfine fiber chemical leather and its clean preparation method；Using the flocking production line that PUR dot matrix roll coating apparatus is housed, PUR is coated on contracting and is rubbed in base fabric, then sprinkles collagenous fibres, contracting is bonded in and rubs in base fabric, cooling winding places, obtains flocking base fabric；Firm collagenous fibres are bonded using no in brushing machine removal flocking base fabric, obtain flannelette simulation type superfine fiber chemical leather.The invention rubs technology using contracting, increase substantially the flexibility, gas permeability and water vapor permeability of superfine fiber synthetic leather base cloth, PUR dot matrix roller coating complex technique is used again, collagenous fibres are compounded on superfine fiber synthetic leather base cloth, appearance is obtained and is similar to the flannelette simulation type superfine fiber chemical leather that natural leather, mechanical property, sanitation performance are more than natural leather.
Description
Technical field
The present invention relates to superfine fiber chemical leather technical field, in particular to a kind of flannelette simulation type superfine fiber chemical leather
And its clean preparation method.
Background technique
Due to be used to produce natural leather raw material skin resource it is limited, and the production of natural leather be a high energy consumption,
The process of high pollution can bring great pollutional load to environment.In recent years, the developed countries such as European Union are to natural leather itself
Safety also proposed new standard, stringent to limit Cr (VI), azo dyes, pentachlorophenol (PCP) present in natural leather
And the toxic chemicals such as free formaldehyde.From the perspective of raw material skin resource, environmental protection, product safety and market, natural skin
The production and use of leather all suffer from great challenge.
Based on the above reasons, countries in the world are all in the new material instead of natural leather for accelerating exploitation new.Wherein ultra-fine fibre
The exploitation for tieing up synthetic leather, can be rated as the model that new material is combined with each other.Superfine fiber chemical leather is non-woven for base with superfine fibre
Material impregnates the polyurethane slurry with open-celled structure, is process through a series of complex technique.Since the diameter of superfine fibre is several
Reach nano-grade size, there is huge specific surface area, it is extremely similar to the pencil collagenous fibres in natural leather, physical
Energy aspect can compare favourably with natural leather, it completes the process by " imitated " to " transformation ", becomes instead of natural leather
Optimal material.
China is the big producer of natural leather in the world, production ranking the first in the world, however due to raw material skin
Shortage and problem of environmental pollution, the continuous downturn of development of China leather industry are inevitable.Be worth we use for reference be Japan at
The experience of function takes the lead in developing high performance superfine fiber chemical leather, has filled up day in time when the decline of Japanese leather industry
The blank left when right Leather Industry decline, suddenly becomes the country the most advanced of superfine fiber chemical leather technology in the world, and
The high-end market of high-end superfine fiber chemical leather product is monopolized.
It is not unique, but has its counterpart, and China is also the big producer of synthetic leather, production ranking the first in the world.Synthetic leather artificial leather
Information network data shows that China's artificial leather synthetic leather consumption figure in 2013 is 42.92 hundred million square metres, increases by 10.42% compared with last year.
Based on the driving of synthetic leather industry industrial upgrading transition, it is flat that the demand speedup of high-end superfine fiber chemical leather is apparently higher than industry
It is horizontal.Superfine fiber chemical leather in 2011 enters national product statistics catalogue, annual 36.36 hundred million beauty of total import and export volume
Member, 10.7 hundred million meters of middle outlet (56.96 ten thousand tons), has increased by 12.96% on a year-on-year basis, export volume accounts for the 23.36% of total output, out
30.4 hundred million dollars of the volume of trade of mouth, increases by 35.11% on a year-on-year basis, has initially formed the history new stage for developing third generation product, and will
The bright spot of investment as new spectra.According to the analysis of artificial leather synthetic leather Professional Committee, Chinese Plastics processing industry association,
Domestic superfine fiber chemical leather effective capacity is about 1.2 hundred million square metres within 2013, and future market demand growth rate is up to
20% or more.
However, the superfine fiber chemical leather product in China, has been at the states such as low and middle-grade positions and the Japan of similar product
Family compares, and still has sizable gap.By the market of early period it is teaching and research and analysis, to accelerate China's superfine fiber chemical leather production
Product promotion, technological progress and industrial upgrading, it is necessary to solve main engineering challenge.Currently, flannelette type superfine fibre synthesizes
Leather product is compared with natural leather, however it remains following insufficient: (1) product pliability is insufficient, and good hand feeling is poor；(2)
The gas permeability and water vapor permeability of product are smaller, cause its sanitation performance poor；(3) cashmere density of product surface is smaller, surface
Feel and simulation quality it is poor.
Summary of the invention
The purpose of the present invention is to provide a kind of flannelette simulation type superfine fiber chemical leather and its clean preparation methods.
To achieve the above object, the present invention adopts the following technical scheme that:
A kind of clean preparation method of flannelette simulation type superfine fiber chemical leather, comprising the following steps:
(1) base fabric contracting is rubbed: superfine fiber synthetic leather base cloth being passed through the dipping tank for rubbing liquid equipped with contracting and is impregnated, is then entered back into
Continous way boarding machine keeps superfine fiber synthetic leather base cloth dry under conditions of 55~75 DEG C, completes contracting and rubs process, is contracted
Rub base fabric；
(2) base fabric flocking: using the flocking production line that PUR dot matrix roll coating apparatus is housed, it is in 75~185 DEG C, coating weight
Under conditions of 25~200g/ ㎡, PUR is coated on contracting and is rubbed in base fabric, PUR is made to rub the PUR for forming rule distribution in base fabric in contracting
Glue point, then collagenous fibres are sprinkled, it is bonded in contracting and rubs in base fabric, then cooling winding, places at room temperature, obtain flocking base fabric；
(3) bristle raising: firm collagenous fibres are bonded using no in brushing machine removal flocking base fabric, and make surface
Collagenous fibres villus erects, and obtains flannelette simulation type superfine fiber chemical leather.
A further improvement of the present invention lies in that superfine fiber synthetic leather base cloth be figured type superfine fiber synthetic leather base cloth,
Non- figured type superfine fiber synthetic leather base cloth or tangerine valve type superfine fiber synthetic leather base cloth.
A further improvement of the present invention lies in that the temperature that liquid is rubbed in contracting is 30~35 DEG C.
A further improvement of the present invention lies in that rubbing the impregnation increment of liquid by roll control contracting when dipping as superfine fibre synthesis
The 80~90% of leather base cloth quality.
A further improvement of the present invention lies in that the contracting is rubbed liquid and is prepared by the following method: by terms of mass fraction, by poplar
5~10 parts of plum tannin extract, 1~2 part of valonea extract, 0.1~0.3 part of sodium citrate, 2~3 parts of sulfated castor oil, sulfiting fish
0.5~1 part and 70~100 parts of water mixing of oil, stirs evenly, and obtains contracting and rubs liquid.
A further improvement of the present invention lies in that superfine fiber synthetic leather base cloth is after contracting is rubbed, length reduction 5~
10%, reduced width 1~3%, thickness increases by 5~10%, and pliability improves 20~50%, and water vapor permeability improves 20~50%.
A further improvement of the present invention lies in that collagenous fibres are the collagen staple fiber of 2~5mm of length.
A further improvement of the present invention lies in that the time placed at room temperature is 24~48h.
A further improvement of the present invention lies in that PUR dot matrix roll coating apparatus includes press disc type PUR hot melt adhesive machine and PUR dot matrix
Roll coater two parts；Wherein, press disc type PUR hot melt adhesive machine includes charging basket and heating part, and heating part is aluminium alloy heating dish,
Charging basket is provided with PUR, and heating dish is pressed into from the top down in PUR charging basket when use, and heating dish is located above PUR, when heating dish plus
When hot, one layer of PUR of charging basket internal upper part is contacted and is melted with heating dish；PUR dot matrix roll coater is the roller with heated constant temperature function
Painting machine, including with reeded feed roller, after the PUR of liquid enters the hopper of PUR dot matrix roll coater, when feed roller rotates
It brings the PUR of liquid into groove, while wiping extra liquid PUR off by scraper plate, the liquid PUR in groove connects rubbing base fabric with contracting
When touching, liquid PUR is transferred to contracting and rubs in base fabric.
A kind of flannelette simulation type superfine fiber chemical leather, the synthetic leather have two layer composite structure, and upper layer is collagenous fibres,
Lower layer is superfine fiber synthetic leather base cloth, and gas permeability is greater than 8000ml/cm2H, water vapor permeability are greater than 2.2mg/cm2·h。
Compared with prior art, the invention has the benefit that
First, rubbing liquid using contracting, technology, the length reduction 5~10% of superfine fiber synthetic leather base cloth, width are rubbed by contracting
1~3% is reduced, thickness increases by 5~10%, and pliability improves 20~50%, and water absorption rate improves 5~10%, and water vapor permeability improves
20~50%.
Second, using the flocking production line that PUR dot matrix roll coating apparatus is housed, by PUR dot matrix roller coating complex technique, by glue
Fibrinogen is compounded on superfine fiber synthetic leather base cloth, forms the appearance for being similar to natural leather.Advantage is as follows: (1) PUR for
Not only there is the adhesive effect of physics in the bonding of superfine fiber synthetic leather base cloth and collagenous fibres, there is also the bonding of chemistry works
With keeping its adhesive strength high, water resistance is splendid, and 10h is impregnated in 95 DEG C of hot water to come unglued；(2) dot matrix roller coating makes PUR exist
The PUR glue point (i.e. PUR dot matrix) that rule distribution is formed on superfine fiber synthetic leather base cloth, after composite collagen fiber, finished product hardness
It varies less, so that final products is soft plentiful.
Third, the present invention rubs technology using contracting, increase substantially the flexibility of superfine fiber synthetic leather base cloth, gas permeability and
Water vapor permeability, then reaction type polyurethane hot-melt adhesive (abbreviation PUR) dot matrix roller coating complex technique is used, collagenous fibres are compounded in super
On fine fibre synthetic leather base cloth, obtaining appearance similar to natural leather, mechanical property, sanitation performance is more than natural flannelette
The flannelette simulation type superfine fiber chemical leather of leather.
Further, liquid is rubbed using the contracting containing myrica extract, valonea extract, sulfated castor oil and sulfited fish oil
Carry out contracting to rub, action principle is as follows: (1) during contracting is rubbed, tannin extract (myrica extract and valonea extract) energy in liquid is rubbed in contracting
So that superfine fiber synthetic leather base cloth is generated effective contraction, increases its thickness, and can increase superfine fiber synthetic leather base cloth
In hydrophily, improve its water absorption rate and water vapor permeability, to improve the sanitation performance of superfine fiber synthetic leather base cloth；(2)
During contracting is rubbed, sulfated castor oil in liquid is rubbed in contracting and sulfited fish oil can make fiber obtain effectively dispersing and
Lubrication, and rub line channel in continous way boarding machine and fall soft drying, it can effectively improve the softness of superfine fiber synthetic leather base cloth
Degree.
Flannelette simulation type superfine fiber chemical leather produced by the invention is a kind of flexible compound with two layer composite structure
Material, upper layer are collagenous fibres, and lower layer is superfine fiber synthetic leather base cloth, appearance be similar to natural leather, mechanical property,
Sanitation performance is more than natural leather.The flannelette simulation type superfine fiber chemical leather production process clean and environmental protection, gas permeability are big
In 8000ml/cm2H, water vapor permeability are greater than 2.2mg/cm2H can be used for clothes, shoemaking, automobile interior decoration and all kinds of seats
Skin material.
Specific embodiment
Below by specific embodiment, the present invention is described in further detail, but the present invention is not only limited in these
Example.
Embodiment 1
(1) base fabric contracting is rubbed: superfine fiber synthetic leather base cloth being rubbed the dipping tank of liquid by contracting equipped with 30 DEG C, and passes through roll
The impregnation increment that liquid is rubbed in control contracting is the 87% of superfine fiber synthetic leather base cloth quality, continous way boarding machine is entered back into, at 60 DEG C
Under the conditions of, it dries superfine fiber synthetic leather base cloth thoroughly, completes contracting and rub process, obtain contracting and rub base fabric；
Wherein, superfine fiber synthetic leather base cloth is figured type superfine fiber synthetic leather base cloth.
The contracting is rubbed liquid and is prepared by the following method: by terms of mass fraction, by 5 parts of myrica extract, 1 part of valonea extract,
0.3 part of sodium citrate, 2.5 parts of sulfated castor oil, 1 part of sulfited fish oil and 70 parts of water mixing, stir until property
Material dissolution, can be obtained contracting and rubs liquid.
(2) base fabric flocking: being 25g/ ㎡ in 75 DEG C, coating weight using the flocking production line that PUR dot matrix roll coating apparatus is housed
Under conditions of, PUR (reaction type polyurethane hot-melt adhesive) is coated on contracting and is rubbed in base fabric, PUR is rubbed in contracting and forms rule in base fabric
The PUR glue point (i.e. PUR dot matrix) of distribution, then the collagenous fibres that length is 2~5mm are sprinkled, it is bonded in contracting and rubs in base fabric, it is then cold
But it winds, places at room temperature for 24 hours, obtain flocking base fabric；
(3) bristle raising: firm collagenous fibres are bonded using no in brushing machine removal flocking base fabric, and make surface
Collagenous fibres villus erects, and obtains flannelette simulation type superfine fiber chemical leather.
Embodiment 2
(1) base fabric contracting is rubbed: superfine fiber synthetic leather base cloth being rubbed the dipping tank of liquid by contracting equipped with 35 DEG C, and passes through roll
The impregnation increment that liquid is rubbed in control contracting is the 90% of superfine fiber synthetic leather base cloth quality, continous way boarding machine is entered back into, at 55 DEG C
Under the conditions of, it dries superfine fiber synthetic leather base cloth thoroughly, completes contracting and rub process, obtain contracting and rub base fabric；
Wherein, superfine fiber synthetic leather base cloth is non-figured type superfine fiber synthetic leather base cloth.
The contracting is rubbed liquid and is prepared by the following method: by terms of mass fraction, by 8 parts of myrica extract, 2 parts of valonea extract,
0.2 part of sodium citrate, 3 parts of sulfated castor oil, 0.5 part of sulfited fish oil and 100 parts of water mixing, stir until property
Material dissolution, can be obtained contracting and rubs liquid.
(2) base fabric flocking: using the flocking production line that PUR dot matrix roll coating apparatus is housed, in 185 DEG C, coating weight 60g/
Under conditions of ㎡, PUR (reaction type polyurethane hot-melt adhesive) is coated on contracting and is rubbed in base fabric, rubbed PUR in contracting and form rule in base fabric
The PUR glue point (i.e. PUR dot matrix) of distribution is restrained, then sprinkles the collagenous fibres that length is 2~5mm, contracting is bonded in and rubs in base fabric, then
Cooling winding, places 48h at room temperature, obtains flocking base fabric；
(3) bristle raising: firm collagenous fibres are bonded using no in brushing machine removal flocking base fabric, and make surface
Collagenous fibres villus erects, and obtains flannelette simulation type superfine fiber chemical leather.
Embodiment 3
(1) base fabric contracting is rubbed: superfine fiber synthetic leather base cloth being rubbed the dipping tank of liquid by contracting equipped with 32 DEG C, and passes through roll
The impregnation increment that liquid is rubbed in control contracting is the 80% of superfine fiber synthetic leather base cloth quality, continous way boarding machine is entered back into, at 65 DEG C
Under the conditions of, it dries superfine fiber synthetic leather base cloth thoroughly, completes contracting and rub process, obtain contracting and rub base fabric；
Wherein, superfine fiber synthetic leather base cloth is tangerine valve type superfine fiber synthetic leather base cloth.
The contracting is rubbed liquid and is prepared by the following method: by terms of mass fraction, by 10 parts of myrica extract, and valonea extract 1.5
Part, 0.1 part of sodium citrate, 2 parts of sulfated castor oil, 0.6 part of sulfited fish oil and 80 parts of water mixing, stirring is until all
Material dissolution can be obtained contracting and rub liquid.
(2) base fabric flocking: using the flocking production line that PUR dot matrix roll coating apparatus is housed, in 100 DEG C, coating weight 100g/
Under conditions of ㎡, PUR (reaction type polyurethane hot-melt adhesive) is coated on contracting and is rubbed in base fabric, rubbed PUR in contracting and form rule in base fabric
The PUR glue point (i.e. PUR dot matrix) of distribution is restrained, then sprinkles the collagenous fibres that length is 2~5mm, contracting is bonded in and rubs in base fabric, then
Cooling winding, places 30h at room temperature, obtains flocking base fabric；
(3) bristle raising: firm collagenous fibres are bonded using no in brushing machine removal flocking base fabric, and make surface
Collagenous fibres villus erects, and obtains flannelette simulation type superfine fiber chemical leather.
Embodiment 4
(1) base fabric contracting is rubbed: superfine fiber synthetic leather base cloth being rubbed the dipping tank of liquid by contracting equipped with 33 DEG C, and passes through roll
The impregnation increment that liquid is rubbed in control contracting is the 85% of superfine fiber synthetic leather base cloth quality, continous way boarding machine is entered back into, at 750 DEG C
Under the conditions of, it dries superfine fiber synthetic leather base cloth thoroughly, completes contracting and rub process, obtain contracting and rub base fabric；
Wherein, superfine fiber synthetic leather base cloth is figured type superfine fiber synthetic leather base cloth.
The contracting is rubbed liquid and is prepared by the following method: by terms of mass fraction, by 6 parts of myrica extract, 1 part of valonea extract,
0.1 part of sodium citrate, 2.5 parts of sulfated castor oil, 0.8 part of sulfited fish oil and 90 parts of water mixing, stirring is until all
Material dissolution can be obtained contracting and rub liquid.
(2) base fabric flocking: using the flocking production line that PUR dot matrix roll coating apparatus is housed, in 130 DEG C, coating weight 150g/
Under conditions of ㎡, PUR (reaction type polyurethane hot-melt adhesive) is coated on contracting and is rubbed in base fabric, rubbed PUR in contracting and form rule in base fabric
The PUR glue point (i.e. PUR dot matrix) of distribution is restrained, then sprinkles the collagenous fibres that length is 2~5mm, contracting is bonded in and rubs in base fabric, then
Cooling winding, places 35h at room temperature, obtains flocking base fabric；
(3) bristle raising: firm collagenous fibres are bonded using no in brushing machine removal flocking base fabric, and make surface
Collagenous fibres villus erects, and obtains flannelette simulation type superfine fiber chemical leather.
Embodiment 5
(1) base fabric contracting is rubbed: superfine fiber synthetic leather base cloth being rubbed the dipping tank of liquid by contracting equipped with 35 DEG C, and passes through roll
The impregnation increment that liquid is rubbed in control contracting is the 82% of superfine fiber synthetic leather base cloth quality, continous way boarding machine is entered back into, at 70 DEG C
Under the conditions of, it dries superfine fiber synthetic leather base cloth thoroughly, completes contracting and rub process, obtain contracting and rub base fabric；
Wherein, superfine fiber synthetic leather base cloth is tangerine valve type superfine fiber synthetic leather base cloth.
The contracting is rubbed liquid and is prepared by the following method: by terms of mass fraction, by 7 parts of myrica extract, 2 parts of valonea extract,
0.2 part of sodium citrate, 3 parts of sulfated castor oil, 0.9 part of sulfited fish oil and 85 parts of water mixing, stir until property
Material dissolution, can be obtained contracting and rubs liquid.
(2) base fabric flocking: using the flocking production line that PUR dot matrix roll coating apparatus is housed, in 155 DEG C, coating weight 200g/
Under conditions of ㎡, PUR (reaction type polyurethane hot-melt adhesive) is coated on contracting and is rubbed in base fabric, rubbed PUR in contracting and form rule in base fabric
The PUR glue point (i.e. PUR dot matrix) of distribution is restrained, then sprinkles the collagenous fibres that length is 2~5mm, contracting is bonded in and rubs in base fabric, then
Cooling winding, places 40h at room temperature, obtains flocking base fabric；
(3) bristle raising: firm collagenous fibres are bonded using no in brushing machine removal flocking base fabric, and make surface
Collagenous fibres villus erects, and obtains flannelette simulation type superfine fiber chemical leather.
PUR dot matrix roll coating apparatus of the invention includes press disc type PUR hot melt adhesive machine and PUR dot matrix roll coater two parts；Its
In, press disc type PUR hot melt adhesive machine includes charging basket and heating part, and heating part is an aluminium alloy heating dish, and charging basket is provided with
PUR, heating dish is pressed into from the top down in PUR charging basket when use, and heating dish is located above PUR, when heating dish heating, in charging basket
Only one layer of PUR is contacted with heating dish above, is made up to fusing point and is melted, and the PUR after fusing squeezes into PUR dot matrix by gear pump
In the hopper of roll coater；Using press disc type PUR hot melt adhesive machine, the PUR of lower part is not heated at this time in charging basket, need when production how much
PUR melts how many PUR, there is O-ring sealing between heating dish and charging basket inner wall, so that the liquid PUR of fusing will not connect with air
Touching ensure that the requirement of PUR use condition；PUR dot matrix roll coater is the roll coater with heated constant temperature function, including with fluted
Feed roller, the array pattern of the groove on the feed roller of different model it is different (the feed roller upper groove of different model
Depth and of different sizes, but groove part is regular arrangement), when the PUR of liquid enter the hopper of PUR dot matrix roll coater with
Afterwards, liquid is kept under constant temperature conditions, brings the PUR of liquid into groove when feed roller rotates, while (being connect with feed roller by scraper plate
Touching) wipe extra liquid PUR off, but the liquid PUR in groove can be stayed, and when rubbing base fabric with contracting and contacting, liquid PUR is just
Contracting can be transferred to rub in base fabric.Since the battle array arrangement mode of the groove on the feed roller of different model is different, so using different
The feed roller of model will be rubbed after roller coating in contracting and form the PUR glue points of different lattice arrangements in base fabric, these PUR glue points are arrived
Adhesive effect.Since the PUR glue point that PUR dot matrix roller coating is formed is distributed in discontinuous dot matrix, that is to say, that form and do not connect
Continuous glue-line, so glue-line will not seriously affect the gas permeability and water vapor permeability that base fabric is rubbed in contracting.In other words, as passing through PUR
The flannelette simulation type superfine fiber chemical leather that dot matrix roller coating technology obtains has good gas permeability and water vapor permeability.
Superfine fiber synthetic leather base cloth in the embodiment of the present invention after the contracting in step (1) is rubbed, length reduction 5~
10%, reduced width 1~3%, thickness increases by 5~10%, and pliability improves 20~50%, and water vapor permeability improves 20~50%.
The present invention rubs technology using special contracting, increases substantially flexibility, the gas permeability of superfine fiber synthetic leather base cloth
And water vapor permeability, then reaction type polyurethane hot-melt adhesive (abbreviation PUR) dot matrix roller coating complex technique is used, collagenous fibres are compounded in
On superfine fiber synthetic leather base cloth, obtaining appearance similar to natural leather, mechanical property, sanitation performance is more than natural suede
The flannelette simulation type superfine fiber chemical leather of leather.The flannelette simulation type superfine fiber chemical leather production process clean and environmental protection,
Gas permeability is greater than 8000ml/cm2H, water vapor permeability are greater than 2.2mg/cm2H can be used for clothes, shoemaking, automobile interior decoration and each
The skin material of class seat.
Claims (7)
1. a kind of clean preparation method of flannelette simulation type superfine fiber chemical leather, which comprises the following steps:
(1) base fabric contracting is rubbed: superfine fiber synthetic leather base cloth being passed through the dipping tank for rubbing liquid equipped with contracting and is impregnated, is then entered back into continuous
Formula boarding machine keeps superfine fiber synthetic leather base cloth dry under conditions of 55~75 DEG C, completes contracting and rubs process, obtains contracting and rubs base
Cloth；
(2) base fabric flocking: using be equipped with PUR dot matrix roll coating apparatus flocking production line, 75~185 DEG C, coating weight be 25~
Under conditions of 200g/ ㎡, PUR is coated on contracting and is rubbed in base fabric, PUR is made to rub the PUR glue point for forming rule distribution in base fabric in contracting,
Collagenous fibres are sprinkled again, contracting is bonded in and rubs in base fabric, and then cooling winding, places at room temperature, obtain flocking base fabric；
(3) bristle raising: firm collagenous fibres are bonded using no in brushing machine removal flocking base fabric, and make the collagen on surface
Fibre fluff erects, and obtains flannelette simulation type superfine fiber chemical leather；
The contracting is rubbed liquid and is prepared by the following method: by terms of mass fraction, by 5~10 parts of myrica extract, and valonea extract 1~2
Part, 0.1~0.3 part of sodium citrate, 2~3 parts of sulfated castor oil, 0.5~1 part of sulfited fish oil and 70~100 parts of water
Mixing, stirs evenly, and obtains contracting and rubs liquid；
Rubbing the impregnation increment of liquid by roll control contracting when dipping is the 80~90% of superfine fiber synthetic leather base cloth quality；
The temperature that liquid is rubbed in contracting is 30~35 DEG C.
2. a kind of clean preparation method of flannelette simulation type superfine fiber chemical leather according to claim 1, feature exist
In, superfine fiber synthetic leather base cloth be figured type superfine fiber synthetic leather base cloth, non-figured type superfine fiber synthetic leather base cloth or
Tangerine valve type superfine fiber synthetic leather base cloth.
3. a kind of clean preparation method of flannelette simulation type superfine fiber chemical leather according to claim 1, feature exist
In, superfine fiber synthetic leather base cloth is after contracting is rubbed, and length reduction 5~10%, reduced width 1~3%, and thickness increase by 5~
10%, pliability improves 20~50%, and water vapor permeability improves 20~50%.
4. a kind of clean preparation method of flannelette simulation type superfine fiber chemical leather according to claim 1, feature exist
In collagenous fibres are the collagen staple fiber of 2~5mm of length.
5. a kind of clean preparation method of flannelette simulation type superfine fiber chemical leather according to claim 1, feature exist
In the time placed at room temperature is 24~48h.
6. a kind of clean preparation method of flannelette simulation type superfine fiber chemical leather according to claim 1, feature exist
In PUR dot matrix roll coating apparatus includes press disc type PUR hot melt adhesive machine and PUR dot matrix roll coater two parts；Wherein, press disc type PUR heat
Glue-smelting machine includes charging basket and heating part, and heating part is aluminium alloy heating dish, and charging basket is provided with PUR, when use heating dish from
On press downward in PUR charging basket, heating dish is located above PUR, when heating dish heating, one layer of PUR of charging basket internal upper part and heating
Disk is contacted and is melted；PUR dot matrix roll coater is the roll coater with heated constant temperature function, including with reeded feed roller, when
The PUR of liquid enters after the hopper of PUR dot matrix roll coater, brings the PUR of liquid into groove when feed roller rotates, while by scraping
Plate wipes extra liquid PUR off, and when rubbing base fabric with contracting and contacting, liquid PUR is transferred to contracting and rubs base fabric the liquid PUR in groove
On.
7. one kind is based on flannelette simulation type superfine fiber chemical leather made from any one of claim 1-6 production method,
It is characterized in that, which has two layer composite structure, and upper layer is collagenous fibres, and lower layer is superfine fiber synthetic leather base cloth, thoroughly
It is quick to take offense in 8000ml/cm2H, water vapor permeability are greater than 2.2mg/cm2·h。
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| CN108570853B (en) * | 2018-05-02 | 2021-08-10 | 陕西科技大学 | Bionic synthetic leather and production method thereof |
| CN108625174B (en) * | 2018-05-02 | 2021-08-10 | 陕西科技大学 | Production method of bionic superfine fiber synthetic leather |
| CN109457503B (en) * | 2018-11-30 | 2021-02-19 | 国源新材料(广州)有限公司 | Flocking method for spunlace non-woven fabric |
| CN116289250A (en) * | 2023-03-13 | 2023-06-23 | 江苏科美新材料有限公司 | Manufacturing method of tannin extract modified suede type superfine fiber synthetic leather |
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