CN107502685B - The production method of water-fastness cow split leather - Google Patents
The production method of water-fastness cow split leather Download PDFInfo
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- CN107502685B CN107502685B CN201711004735.1A CN201711004735A CN107502685B CN 107502685 B CN107502685 B CN 107502685B CN 201711004735 A CN201711004735 A CN 201711004735A CN 107502685 B CN107502685 B CN 107502685B
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C1/00—Chemical treatment prior to tanning
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B1/00—Manufacture of leather; Machines or devices therefor
- C14B1/44—Mechanical treatment of leather surfaces
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B1/00—Manufacture of leather; Machines or devices therefor
- C14B1/58—Drying
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C15/00—Apparatus for chemical treatment or washing of hides, skins, or leather
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/04—Mineral tanning
- C14C3/06—Mineral tanning using chromium compounds
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/08—Chemical tanning by organic agents
- C14C3/10—Vegetable tanning
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/28—Multi-step processes
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C9/00—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes
- C14C9/02—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes using fatty or oily materials, e.g. fat liquoring
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- Mechanical Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The present invention relates to a kind of production methods of water-fastness cow split leather, belong to leatherwork technical field.The production method of the water-fastness cow split leather includes the following steps: to take the cow split skin base after processing water squeezing, shaving, Gu then successively through a rewetting → time wash water → retanning → neutralization → secondary wash water → filling → dyeing → stuffing → acid → three times wash water → fixation → tetra- time wash water → drying → extension dries in the air → shake soft → buffing → fall soft.Water-fastness cow split leather made from this method has good water-wash resistance, and the yield of leather of the water-fastness cow split leather is higher.
Description
Technical field
The invention belongs to leatherwork technical fields, and in particular to a kind of production method of water-fastness cow split leather.
Background technique
So-called water-fastness leather remains to reach the color fastness of standard requirements, dimensionally stable that is, under certain washing conditions
Property and it is flexible one leather-like, thus water-fastness leather is the high-grade leather of one kind easily maintained.And it is existing water-fastness
Leather, mostly pigskin, goat skin, rarely water-fastness ox-hide is removed from office, and there are no the production of water-fastness cow split leather
The relevant report of method.
The production technology of general water-fastness leather are as follows: shaving → buffing → degreasing → retanning → neutralization → dyeing → stuffing →
Retanning → fixation → buffing → degreasing → neutralization → dyeing → stuffing → retanning → fixation, need to through multiple degreasing, stuffing, retanning and
Dyeing process could improve the color fastness and aqueous size stability of leather, to assign leather preferable water-wash resistance, and be somebody's turn to do
The maximum deficiency of technique is that process is tedious, causes adjuvant used not only many kinds of, but also usage amount is also larger, cost compared with
It is high.
And the color fastness and washing dimensional stability and the azelon degree of scatter of leather itself, leather of water-fastness leather
Tanning agent and fatting agent that the processes such as the brother chemicals used in the production process and each process use etc. are all closely related, and show
The washing color fastness of some cow split skins and washing dimensional stability are poor, and the standard of water-fastness leather is not achieved.
Have great importance in conclusion carrying out research to the production method of water-fastness cow split leather.
Summary of the invention
The purpose of the present invention is to solve the deficiencies in the prior art, and provide a kind of production of water-fastness cow split leather
Method, water-fastness cow split leather made from this method have a good water-wash resistance, and the water-fastness cow split leather
Yield of leather is higher.
The present invention adopts the following technical scheme:
The production method of water-fastness cow split leather includes the following steps: to take the cow split after processing water squeezing, shaving
Skin base, Gu then successively through a rewetting → time wash water → retanning → neutralization → secondary wash water → filling → dyeing → stuffing → acid → tri-
Secondary wash water → fixation → tetra- time wash water → drying → extension dries in the air → shake soft → buffing → fall it is soft to get the water-fastness cow split skin
Leather.
Further, the production method of the water-fastness cow split leather, specifically comprises the following steps:
Rewetting: step 1 takes the skin base after processing water squeezing, shaving, is placed in rotary drum and carries out rewetting, obtain rewetting skin
Material；
Step 2, a wash water: the rewetting cladding that step 1 is obtained carries out a wash water, and drain obtains a wash water skin
Material；
Step 3, retanning: the wash water cladding that step 2 is obtained carries out retanning, obtains retanning cladding；
Step 4 neutralizes: retanning cladding obtained by step 3 being neutralized, neutralization cladding is obtained；
Secondary wash water: step 5 carries out secondary wash water for cladding is neutralized obtained by step 4, drain obtains secondary wash water cladding；
Filling: step 6 secondary wash water cladding obtained by step 5 is filled, filling cladding is obtained；
Step 7, dyeing: according to the mass percent meter of skin base, being first added the water soluble dispersing agent of 1.8%-2.2%, then
Dyestuff is added, the additional amount of dyestuff is adjusted according to cladding color, is run 60-80min, is obtained dyeing cladding；
Stuffing: dyeing cladding obtained by step 7 is carried out stuffing, obtains stuffing cladding by step 8；
Step 9, Gu acid: stuffing cladding obtained by step 8 is subjected to solid acid, obtains solid sour cladding；
Wash water three times: solid sour cladding obtained by step 9 is carried out wash water three times, obtains wash water cladding three times by step 10；
Step 11, fixed: by ten gained of step 3, wash water cladding is fixed three times, obtains fixed cladding；
Four wash waters: fixed cladding obtained by step 11 is carried out four wash waters, successively through dry after rousing out by step 12
It is dry, hang dry in the air, the soft, buffing that shakes, fall it is soft to get the water-fastness cow split leather.
Further, rewetting described in step 1 specifically: take the skin base after processing water squeezing, shaving, be placed in and turn
In drum, according to the mass percent meter of skin base, by the PAS TOSOL M2 degreasing of the water of 150%-200%, 0.4%-0.6%
The oxalic acid of agent, the rewetting agent of 0.2%-0.4% and 0.7%-0.9% is added in rotary drum, and adjusting pH is 3.8-4.0, runs 90-
Drain after 120min, wherein the water temperature is 40-45 DEG C.
Further, retanning described in step 3 specifically: according to the mass percent meter of skin base, by 120%-
150% water, the formic acid of 0.25%-0.35%, 2.5%-3.5% chrome green be added in rotary drum, adjustings pH is 3.5-
3.8, drain after 90-120min is run, wherein the water temperature is 24-26 DEG C.
Further, it is neutralized described in step 4 specifically: according to the mass percent meter of skin base, by 120%-
150% water, the sodium formate of 2.0%-3.0%, the Bath pellet FC neutralizer of 1.8%-2.2%, 1%-1.5% sodium bicarbonate add
Enter in rotary drum, adjusting pH is 5.8-6.1, drain after 90-120min is run, wherein the water temperature is 24-30 DEG C.
Further, it is filled described in step 6 specifically: according to the mass percent meter of skin base, by 40%-60%
Water, the water polyacrylic acid lotion of 1.0%-1.5%, 1.5%-2.0% vegetable tanning agent be added in rotary drum, run 25-
35min, wherein the water temperature is 24-30 DEG C.
Further, stuffing described in step 8 specifically: according to the mass percent meter of skin base, by 3.5%-
4.5% light and soft type fatting agent, the natural neat's foot oil of 0.8%-1.2%, 3.5%-4.5% anionic Synthetic Oil,
The lanolin of 0.4%-0.6% is added in rotary drum, runs 75-85min.
Further, solid acid-specific described in step 9 are as follows: according to the mass percent meter of skin base, by 250%-
300% water, the formic acid of 0.45%-0.55% are added in rotary drum, run 15-25min, add the first of 0.45%-0.55%
Acid runs 15-25min, adds the formic acid of 0.45%-0.55%, runs 15-25min, and adjusting pH is 3.8-4.0, drain；
Wherein the water temperature is 50-55 DEG C.
Further, fixed described in step 11 specifically: according to the mass percent meter of skin base, by 200%-
Rotary drum is added in 250% water, the TRUPOFIX WP fixative of 0.8%-1.2%, runs 45-55min, adds 1.2%-
1.8% TRUPOFIX WP fixative, after running 40-55min, drain, wherein the water temperature is 50-55 DEG C.
Further, a wash water of the step 2, the secondary wash water of step 5, the wash water three times of step 10 and step
Rapid 12 four wash waters specifically: according to the mass percent meter of skin base, rotary drum, operation is added in the water of 200%-250%
After 10-15min, draining, the water temperature is 24-30 DEG C.
Compared with prior art, the present invention has the advantages that:
First: the present invention is by carrying out a rewetting → time wash water → multiple to the cow split skin base after processed water squeezing, shaving
Gu wash water → fixation → tetra- time wash water → the drying of tan → neutralization → secondary wash water → filling → dyeing → stuffing → acid → three times →
Extension dries in the air → shake soft, and → buffing → falls supple-settlement, and the cow split leather with excellent wash durability is made, wherein in the rewetting stage,
By PASTOSOL M2 degreasing agent and rewetting agent compatible use, so that skin base rewetting is more abundant, be conducive to be wrapped in skin base fiber table
Auxiliary agent in the moisture and subsequent handling in face swaps, and ensure that skin base in subsequent handling and the combination of other auxiliary agents is firm
Degree；In neutralization step, Bath pellet FC neutralizer and sodium formate, sodium bicarbonate compatible use can be effectively prevent because first is used alone
Loose side caused by sour sodium and sodium bicarbonate ensure that cladding quality；Filling work procedure is by water polyacrylic acid lotion and vegetable tanning
Agent compatible use, first fills poststaining, keeps dye molecule stronger in conjunction with skin base azelon, by light and soft type in stuffing process
Fatting agent, natural neat's foot oil, anionic Synthetic Oil and lanolin compatible use significantly improve the combination jail of fatting agent
Degree, migrate fatting agent will not in water-washing process, so that the washing color fastness of leather is further ensured, in short,
The cow split skin produced using production method of the invention, water-wash resistance be not available for current existing cow split skin,
And the physical property of cladding is also more excellent；
Second: the present invention is water-soluble material in the auxiliary agent material that each process uses, to environment and human body close friend, no
Secondary pollution can be generated；
Third, production method of the invention is simple and easy to do, is suitable for promoting and applying in this field.
Specific embodiment
Below with reference to embodiment, the present invention is described in further detail.
It will be understood to those of skill in the art that the following example is merely to illustrate the present invention, and it should not be regarded as limiting this hair
Bright range.The Trupot an Dar dispersing agent of Trumpler company can be used in water soluble dispersing agent used in the present invention,
Pastosol M2 degreasing agent is purchased from Trumpler company, and rewetting agent suggestion uses the You Sha nation W rewetting agent of BASF, Bath
Red FC neutralizer is purchased from BASF, water polyacrylic acid lotion suggestion using TJ-C2150 soft acrylic, can be purchased from
Sichuan Ting Jiang new material limited liability company, vegetable tanning agent suggestion use Trupotan AG vegetable tanning agent, can be purchased from Tang Pule
Chemical dyestuff (Jiaxing) Co., Ltd, light and soft type fatting agent suggestion use the light and soft type of Sichuan Ting Jiang new material limited liability company
Fatting agent TJ-F3013, natural neat's foot oil suggestion use the natural neat's foot oil T J- of Sichuan Ting Jiang new material limited liability company
F210, anionic Synthetic Oil suggestion are synthesized using the LIPSOL MSW of SCHILL+SEILACHER company (abbreviation SS company)
Grease, lanolin, TRUPOFIX WP fixative can be purchased from Tang Pule chemical dyestuff (Jiaxing) Co., Ltd.Institute in the present invention
It unless otherwise instructed can be by being commercially available with reagent raw material.
Embodiment 1
The production method of water-fastness cow split leather includes the following steps: to take the cow split after processing water squeezing, shaving
Skin base, Gu then successively through a rewetting → time wash water → retanning → neutralization → secondary wash water → filling → dyeing → stuffing → acid → tri-
Secondary wash water → fixation → tetra- time wash water → drying → extension dries in the air → shake soft → buffing → fall soft, the specific steps are as follows:
Rewetting: step 1 takes the skin base after processing water squeezing, shaving, is placed in rotary drum and carries out rewetting, obtain rewetting skin
Material, the rewetting specifically: according to the mass percent meter of skin base, by 180% water, 0.5% PASTOSOL M2 degreasing
Agent, 0.3% rewetting agent and 0.8% oxalic acid are added in rotary drum, and adjusting pH is 3.8-4.0, run drain after 100min, wherein
The water temperature is 45 DEG C；
Step 2, a wash water: the rewetting cladding that step 1 is obtained carries out a wash water, and drain obtains a wash water skin
Material, the wash water specifically: according to the mass percent meter of skin base, rotary drum is added in 220% water, after running 10min, row
Water, the water temperature are 26 DEG C；
Step 3, retanning: the wash water cladding that step 2 is obtained carries out retanning, obtains retanning cladding, the retanning tool
Body are as follows: according to the mass percent meter of skin base, rotary drum is added in 130% water, 0.3% formic acid, 3.0% chrome green
In, adjusting pH is 3.5-3.8, drain after 100min is run, wherein the water temperature is 25 DEG C；
Step 4 neutralizes: retanning cladding obtained by step 3 being neutralized, neutralization cladding, the neutralization specifically: press are obtained
According to the mass percent meter of skin base, by 135% water, 2.5% sodium formate, 2.0% Bath pellet FC neutralizer, 1.2%
Sodium bicarbonate is added in rotary drum, and adjusting pH is 5.8-6.1, runs drain after 100min, wherein the water temperature is 27 DEG C；
Step 5, secondary wash water: carrying out secondary wash water for cladding is neutralized obtained by step 4, and drain obtains secondary wash water cladding,
The wash water specifically: according to the mass percent meter of skin base, rotary drum is added in 225% water, after running 10min, draining, institute
Stating water temperature is 28 DEG C；
Step 6, filling: secondary wash water cladding obtained by step 5 is filled, and obtains filling cladding, and the filling is specific
Are as follows: according to the mass percent meter of skin base, by 50% water, 1.2% water polyacrylic acid lotion, 1.8% vegetable tanning
Agent is added in rotary drum, runs 30min, wherein the water temperature is 26 DEG C；
Dyeing: step 7 according to the mass percent meter of skin base, is first added 2.0% water soluble dispersing agent, adds dye
Material, the additional amount of dyestuff are adjusted according to cladding color, are run 70min, are obtained dyeing cladding；
Stuffing: dyeing cladding obtained by step 7 is carried out stuffing, obtains stuffing cladding, the stuffing specifically: press by step 8
According to the mass percent meter of skin base, by 4% light and soft type fatting agent, 1.0% natural neat's foot oil, 4% anionic synthesize
Grease, 0.5% lanolin be added rotary drum in, run 80min；
Step 9, Gu acid: stuffing cladding obtained by step 8 is subjected to solid acid, obtains solid sour cladding, the solid acid-specific are as follows: press
According to the mass percent meter of skin base, the formic acid of 280% water, 0.5% is added in rotary drum, 20min is run, adds 0.5%
Formic acid, run 20min, add 0.5% formic acid, run 20min, adjustings pH is 3.8-4.0, drain；The wherein water
Temperature is 50 DEG C；
Step 10, wash water three times: carrying out wash water three times for solid sour cladding obtained by step 9, obtain wash water cladding three times, described
Wash water specifically: according to the mass percent meter of skin base, rotary drum is added in 220% water, after running 10min, draining, the water
Temperature is 26 DEG C；
Step 11, fixed: by ten gained of step 3, wash water cladding is fixed three times, obtains fixed cladding, the fixation
Specifically: according to the mass percent meter of skin base, rotary drum is added in the TRUPOFI X WP fixative of 220% water, 1.0%,
50min is run, 1.5% TRUPOFIX WP fixative is added, after running 50min, drain, wherein the water temperature is 50 DEG C；
Four wash waters: fixed cladding obtained by step 11 is carried out four wash waters, the wash water by step 12 specifically:
According to the mass percent meter of skin base, rotary drum is added in 220% water, after running 10min, draining, the water temperature is 26 DEG C；Out
After drum successively through drying, hang dry in the air, the soft, buffing that shakes, fall it is soft to get the water-fastness cow split leather.
Embodiment 2
The production method of water-fastness cow split leather includes the following steps: to take the cow split after processing water squeezing, shaving
Skin base, Gu then successively through a rewetting → time wash water → retanning → neutralization → secondary wash water → filling → dyeing → stuffing → acid → tri-
Secondary wash water → fixation → tetra- time wash water → drying → extension dries in the air → shake soft → buffing → fall soft, the specific steps are as follows:
Rewetting: step 1 takes the skin base after processing water squeezing, shaving, is placed in rotary drum and carries out rewetting, obtain rewetting skin
Material, the rewetting specifically: according to the mass percent meter of skin base, by 150% water, 0.4% PASTOSOL M2 degreasing
Agent, 0.2% rewetting agent and 0.7% oxalic acid are added in rotary drum, and adjusting pH is 3.8-4.0, run drain after 90min, wherein
The water temperature is 45 DEG C；
Step 2, a wash water: the rewetting cladding that step 1 is obtained carries out a wash water, and drain obtains a wash water skin
Material, the wash water specifically: according to the mass percent meter of skin base, rotary drum is added in 200% water, after running 10min, row
Water, the water temperature are 30 DEG C；
Step 3, retanning: the wash water cladding that step 2 is obtained carries out retanning, obtains retanning cladding, the retanning tool
Body are as follows: according to the mass percent meter of skin base, 120% water, 0.25% formic acid, 2.5% chrome green are added and turned
In drum, adjusting pH is 3.5-3.8, runs drain after 90min, wherein the water temperature is 26 DEG C；
Step 4 neutralizes: retanning cladding obtained by step 3 being neutralized, neutralization cladding, the neutralization specifically: press are obtained
According to the mass percent meter of skin base, by 120%% water, 2.0% sodium formate, 1.8% Bath pellet FC neutralizer, 1%
Sodium bicarbonate is added in rotary drum, and adjusting pH is 5.8-6.1, runs drain after 90min, wherein the water temperature is 30 DEG C；
Step 5, secondary wash water: carrying out secondary wash water for cladding is neutralized obtained by step 4, and drain obtains secondary wash water cladding,
The wash water specifically: according to the mass percent meter of skin base, rotary drum is added in 200% water, after running 10min, draining, institute
Stating water temperature is 30 DEG C；
Step 6, filling: secondary wash water cladding obtained by step 5 is filled, and obtains filling cladding, and the filling is specific
Are as follows: according to the mass percent meter of skin base, by 40% water, 1.0% water polyacrylic acid lotion, 1.5% vegetable tanning
Agent is added in rotary drum, runs 25min, wherein the water temperature is 30 DEG C；
Dyeing: step 7 according to the mass percent meter of skin base, is first added 1.8% water soluble dispersing agent, adds dye
Material, the additional amount of dyestuff are adjusted according to cladding color, are run 60min, are obtained dyeing cladding；
Stuffing: dyeing cladding obtained by step 7 is carried out stuffing, obtains stuffing cladding, the stuffing specifically: press by step 8
According to the mass percent meter of skin base, by 3.5% light and soft type fatting agent, 0.8% natural neat's foot oil, 3.5% anionic
Synthetic Oil, 0.4% lanolin be added rotary drum in, run 75min；
Step 9, Gu acid: stuffing cladding obtained by step 8 is subjected to solid acid, obtains solid sour cladding, the solid acid-specific are as follows: press
According to the mass percent meter of skin base, the formic acid of 250% water, 0.45% is added in rotary drum, 15min is run, adds
0.45% formic acid runs 15min, adds 0.45% formic acid, runs 15min, and adjusting pH is 3.8-4.0, drain；Wherein
The water temperature is 50 DEG C；
Step 10, wash water three times: carrying out wash water three times for solid sour cladding obtained by step 9, obtain wash water cladding three times, described
Wash water specifically: according to the mass percent meter of skin base, rotary drum is added in 200% water, after running 10min, draining, the water
Temperature is 24 DEG C；
Step 11, fixed: by ten gained of step 3, wash water cladding is fixed three times, obtains fixed cladding, the fixation
Specifically: according to the mass percent meter of skin base, rotary drum is added in the TRUPOFI X WP fixative of 200% water, 0.8%,
45min is run, 1.2% TRUPOFIX WP fixative is added, after running 40min, drain, wherein the water temperature is 55 DEG C；
Four wash waters: fixed cladding obtained by step 11 is carried out four wash waters, the wash water by step 12 specifically:
According to the mass percent meter of skin base, rotary drum is added in 200% water, after running 10min, draining, the water temperature is 24 DEG C；Out
After drum successively through drying, hang dry in the air, the soft, buffing that shakes, fall it is soft to get the water-fastness cow split leather.
Embodiment 3
The production method of water-fastness cow split leather includes the following steps: to take the cow split after processing water squeezing, shaving
Skin base, Gu then successively through a rewetting → time wash water → retanning → neutralization → secondary wash water → filling → dyeing → stuffing → acid → tri-
Secondary wash water → fixation → tetra- time wash water → drying → extension dries in the air → shake soft → buffing → fall soft, the specific steps are as follows:
Rewetting: step 1 takes the skin base after processing water squeezing, shaving, is placed in rotary drum and carries out rewetting, obtain rewetting skin
Material, the rewetting specifically: according to the mass percent meter of skin base, by 200% water, 0.6% PASTOSOL M2 degreasing
Agent, 0.4% rewetting agent and 0.9% oxalic acid are added in rotary drum, and adjusting pH is 3.8-4.0, run drain after 120min, wherein
The water temperature is 40 DEG C；
Step 2, a wash water: the rewetting cladding that step 1 is obtained carries out a wash water, and drain obtains a wash water skin
Material, the wash water specifically: according to the mass percent meter of skin base, rotary drum is added in 250% water, after running 15min, row
Water, the water temperature are 24 DEG C；
Step 3, retanning: the wash water cladding that step 2 is obtained carries out retanning, obtains retanning cladding, the retanning tool
Body are as follows: according to the mass percent meter of skin base, 150% water, 0.35% formic acid, 3.5% chrome green are added and turned
In drum, adjusting pH is 3.5-3.8, runs drain after 120min, wherein the water temperature is 24 DEG C；
Step 4 neutralizes: retanning cladding obtained by step 3 being neutralized, neutralization cladding, the neutralization specifically: press are obtained
According to the mass percent meter of skin base, by 150% water, 3.0% sodium formate, 2.2% Bath pellet FC neutralizer, 1.5%
Sodium bicarbonate is added in rotary drum, and adjusting pH is 5.8-6.1, runs drain after 120min, wherein the water temperature is 24 DEG C；
Step 5, secondary wash water: carrying out secondary wash water for cladding is neutralized obtained by step 4, and drain obtains secondary wash water cladding,
The wash water specifically: according to the mass percent meter of skin base, rotary drum is added in 250% water, after running 15min, draining, institute
Stating water temperature is 24 DEG C；
Step 6, filling: secondary wash water cladding obtained by step 5 is filled, and obtains filling cladding, and the filling is specific
Are as follows: according to the mass percent meter of skin base, by 60% water, 1.5% water polyacrylic acid lotion, 2.0% vegetable tanning
Agent is added in rotary drum, runs 35min, wherein the water temperature is 24 DEG C；
Dyeing: step 7 according to the mass percent meter of skin base, is first added 2.2% water soluble dispersing agent, adds dye
Material, the additional amount of dyestuff are adjusted according to cladding color, are run 80min, are obtained dyeing cladding；
Stuffing: dyeing cladding obtained by step 7 is carried out stuffing, obtains stuffing cladding, the stuffing specifically: press by step 8
According to the mass percent meter of skin base, by 4.5% light and soft type fatting agent, 1.2% natural neat's foot oil, 4.5% anionic
Synthetic Oil, 0.6% lanolin be added rotary drum in, run 85min；
Step 9, Gu acid: stuffing cladding obtained by step 8 is subjected to solid acid, obtains solid sour cladding, the solid acid-specific are as follows: press
According to the mass percent meter of skin base, the formic acid of 300% water, 0.55% is added in rotary drum, 25min is run, adds
0.55% formic acid runs 25min, adds 0.55% formic acid, runs 25min, and adjusting pH is 3.8-4.0, drain；Wherein
The water temperature is 55 DEG C；
Step 10, wash water three times: carrying out wash water three times for solid sour cladding obtained by step 9, obtain wash water cladding three times, described
Wash water specifically: according to the mass percent meter of skin base, rotary drum is added in 250% water, after running 15min, draining, the water
Temperature is 24 DEG C；
Step 11, fixed: by ten gained of step 3, wash water cladding is fixed three times, obtains fixed cladding, the fixation
Specifically: according to the mass percent meter of skin base, rotary drum is added in the TRUPOFI X WP fixative of 250% water, 1.2%,
55min is run, 1.8% TRUPOFIX WP fixative is added, after running 55min, drain, wherein the water temperature is 55 DEG C；
Four wash waters: fixed cladding obtained by step 11 is carried out four wash waters, the wash water by step 12 specifically:
According to the mass percent meter of skin base, rotary drum is added in 250% water, after running 15min, draining, the water temperature is 24 DEG C；Out
After drum successively through drying, hang dry in the air, the soft, buffing that shakes, fall it is soft to get the water-fastness cow split leather.
Reference examples 1
Commercially available two layers of ox-hide of certain brand.
The leather of leather made from the embodiment of the present invention 1 to 3, reference examples is tested for the property, as a result such as the following table 1 institute
Show:
The measurement of leather degree of getting wet is as follows:
1, specimen size: taking 3 diameters is the test piece to be measured of 220mm, is successively tested, test result is averaged；
2, test method: referring to ASTM-D1913-2000, and tester table is degree of getting wet analyzer, model G T-7033N；
3, testing procedure:
(1) Waterproof leather is fixed with sample support object；
(2) sample support object is placed on bracket；
(3) 250 milliliters of distilled water are poured into funnel rapidly；
(4) once water has sprayed, sample support object is removed together with sample immediately；
(5) supporter is tapped in solid objects twice, it is ensured that sample front water droplet is downward；
(6) it makes comparisons with referring to figure, observes the wetness degree of sample.
4, points for attention:
(1) 250 milliliter of distilled water must flow in 25-30s；
(2) sample mount and level are at 45 degree of angles；
(3) nozzle lower surface center and specimen surface center keep 152.4mm spacing；
(4) hand is avoided to touch as far as possible in test process, in order to avoid influence test result.
5, result evaluation:
(upper surface does not get wet or moistens 100 points (5 grades): NO STICKING OR WETTING OF UPPER SURFACE
It is wet).
(upper surface is light by 90 points (4 grades): SLIGHT RANDOM STICKING OR WETTING OF UPPER SURFACE
It is micro- to get wet or soak).
80 points (3 grades): WETTING OF UPPER SURFACE AT SPRAY POINTS (there is dotted wetting in upper surface).
(there is part in entire upper surface to 70 points (2 grades): PARTIAL WETTING OF WHOLE OF UPPER SURFACE
Wetting).
50 points (1 grade): COMPLETE WETTING OF WHOLE OF UPPER SURFACE (all moistens entire upper surface
It is wet).
0 point (0 grade): COMPLETE WETTING OF WHOLE UPPER AND LOWER SURFACES (entirely upper table
Face and lower surface all soak).
1 performance test data table of table
As seen from the above table, water-fastness cow split leather made from production method of the invention have it is good it is resistance to it is properties,
Wearability, dynamic water-proof and excellent rub resistance colour fastness and resistance to tortuosity, therefore its water-wash resistance is excellent.
It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, above-described embodiment and explanation
It is merely illustrated the principles of the invention described in book, without departing from the spirit and scope of the present invention, the present invention also has
Various changes and modifications, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention
It is defined by the appending claims and its equivalent thereof.
Claims (1)
1. the production method of water-fastness cow split leather, which comprises the steps of: take by processing water squeezing, shaving
Cow split skin base afterwards, then successively through a rewetting → time wash water → retanning → neutralization → secondary wash water → filling → dyeing → stuffing
Gu → acid → three times wash water → fixation → tetra- time wash water → drying → extension dries in the air → shake soft → buffing → fall it is soft, it is specific as follows:
Rewetting: step 1 takes the skin base after processing water squeezing, shaving to carry out rewetting, obtains rewetting cladding；
Step 2, a wash water: the rewetting cladding that step 1 is obtained carries out a wash water, and drain obtains a wash water cladding；
Step 3, retanning: the wash water cladding that step 2 is obtained carries out retanning, obtains retanning cladding；
Step 4 neutralizes: retanning cladding obtained by step 3 being neutralized, neutralization cladding is obtained；
Secondary wash water: step 5 carries out secondary wash water for cladding is neutralized obtained by step 4, drain obtains secondary wash water cladding；
Step 6, filling: secondary wash water cladding obtained by step 5 being filled, filling cladding is obtained, wherein the filling is specific
Are as follows: according to the mass percent meter of skin base, by the water of 40%-60%, the water polyacrylic acid lotion of 1.0%-1.5%, 1.5%-
2.0% vegetable tanning agent is added in rotary drum, runs 25-35min, and wherein water temperature is 24-30 DEG C；
Dyeing: step 7 according to the mass percent meter of skin base, is first added the water soluble dispersing agent of 1.8%-2.2%, adds dye
Material, the additional amount of dyestuff are adjusted according to cladding color, are run 60-80min, are obtained dyeing cladding；
Stuffing: dyeing cladding obtained by step 7 is carried out stuffing, obtains stuffing cladding by step 8；
Step 9, Gu acid: stuffing cladding obtained by step 8 is subjected to solid acid, obtains solid sour cladding；
Wash water three times: solid sour cladding obtained by step 9 is carried out wash water three times, obtains wash water cladding three times by step 10；
Step 11, fixed: by step 10 gained, wash water cladding is fixed three times, obtains fixed cladding；
Four wash waters: fixed cladding obtained by step 11 is carried out four wash waters, successively through drying, extension after rousing out by step 12
Dry in the air, the soft, buffing that shakes, fall it is soft to get the water-fastness cow split leather；
Wherein, rewetting described in step 1 specifically: take the skin base after processing water squeezing, shaving, be placed in rotary drum, according to skin
The mass percent meter of base, by time of the water of 150%-200%, the PASTOSOL M2 degreasing agent of 0.4%-0.6%, 0.2%-0.4%
The oxalic acid of humectant and 0.7%-0.9% are added in rotary drum, and adjusting pH is 3.8-4.0, run drain after 90-120min, wherein water temperature
It is 40-45 DEG C；
Retanning described in step 3 specifically: according to the mass percent meter of skin base, by the water of 120%-150%, 0.25%-0.35%
Formic acid, 2.5%-3.5% chrome green be added rotary drum in, adjustings pH be 3.5-3.8, operation 90-120min after drain,
Middle water temperature is 24-26 DEG C；
It neutralizes described in step 4 specifically: according to the mass percent meter of skin base, by the water of 120%-150%, 2.0%-3.0%
Sodium formate, the Bath pellet FC neutralizer of 1.8%-2.2%, 1%-1.5% sodium bicarbonate be added rotary drum in, adjustings pH be 5.8-6.1, transport
Drain after row 90-120min, wherein water temperature is 24-30 DEG C；
Stuffing described in step 8 specifically: according to the mass percent meter of skin base, by the light and soft type fatting agent of 3.5%-4.5%,
The natural neat's foot oil of 0.8%-1.2%, the anionic Synthetic Oil of 3.5%-4.5%, 0.4%-0.6% lanolin be added rotary drum
In, run 75-85min；
Solid acid-specific described in step 9 are as follows: according to the mass percent meter of skin base, by the water of 250%-300%, 0.45%-0.55%
Formic acid be added in rotary drum, run 15-25min, add the formic acid of 0.45%-0.55%, run 15-25min, add
The formic acid of 0.45%-0.55%, runs 15-25min, and adjusting pH is 3.8-4.0, drain；Wherein water temperature is 50-55 DEG C；
It is fixed described in step 11 specifically: according to the mass percent meter of skin base, by the water of 200%-250%, 0.8%-1.2%
TRUPOFIX WP fixative be added rotary drum, run 45-55min, add the TRUPOFIX WP fixative of 1.2%-1.8%,
After running 40-55min, drain, wherein water temperature is 50-55 DEG C；
Secondary wash water described in a wash water, step 5 described in step 2, wash water and step 12 three times described in step 10
Four wash waters specifically: according to the mass percent meter of skin base, rotary drum is added in the water of 200%-250%, runs 10-
After 15min, draining, water temperature is 24-30 DEG C.
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| CN110938716B (en) * | 2019-12-13 | 2022-03-22 | 漳州香洲皮革有限公司 | Method for manufacturing cow double-layer waterproof leather |
| CN110938717B (en) * | 2019-12-13 | 2022-03-22 | 漳州香洲皮革有限公司 | White yellowing-resistant cow double-layer leather and manufacturing method thereof |
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| CN116121469B (en) * | 2023-02-27 | 2024-01-09 | 峰安皮业股份有限公司 | Environment-friendly water-washing-resistant two-layer anti-napping skin manufacturing process for cattle |
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| CN116769979A (en) * | 2023-08-03 | 2023-09-19 | 江西隆华材料科技股份有限公司 | Preparation method of sheep leather |
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