CN107502685A - The preparation method of water-fastness cow split leather - Google Patents
The preparation method of water-fastness cow split leather Download PDFInfo
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- CN107502685A CN107502685A CN201711004735.1A CN201711004735A CN107502685A CN 107502685 A CN107502685 A CN 107502685A CN 201711004735 A CN201711004735 A CN 201711004735A CN 107502685 A CN107502685 A CN 107502685A
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- water
- cladding
- fastness
- wash water
- skin base
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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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
Abstract
The present invention relates to a kind of preparation method of water-fastness cow split leather, belong to leatherwork technical field.The preparation method of the water-fastness cow split leather comprises the following steps：Learnt from else's experience processing water squeezing, the cow split skin base after 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 field, and in particular to a kind of preparation method of water-fastness cow split leather.
Background technology
So-called water-fastness leather, i.e., under certain washing conditions, remain to color fastness, the dimensionally stable for reaching standard requirement
Property and flexible one leather-like, thus water-fastness leather is a kind of high-grade leather easily maintained.It is and existing water-fastness
Leather, mostly pigskin, goat skin, rarely water-fastness ox-hide is removed from office, and there are no the making of water-fastness cow split leather
The relevant report of method.
The production technology of general water-fastness leather is：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, the color fastness and aqueous size stability of leather could be improved, so as to assign leather preferable water-wash resistance, and is somebody's turn to do
The maximum deficiency of technique is tedious process, causes adjuvant used not only species various, and usage amount is also larger, cost compared with
It is high.
And the color fastness and washing dimensional stability and leather of water-fastness leather azelon degree of scatter in itself, leather
Tanning agent and fatting agent that the processes such as the brother chemicals used in manufacturing process and each operation use etc. are all closely related, and show
The washing color fastness of some cow split skins and washing dimensional stability are poor, do not reach the standard of water-fastness leather.
In summary, research is carried out to the preparation method of water-fastness cow split leather to have great importance.
The content of the invention
The invention aims to solve the deficiencies in the prior art, and provide a kind of making 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 that：
The preparation method of water-fastness cow split leather, comprises the following steps：The cow split learnt from else's experience 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, produce the water-fastness cow split skin
Leather.
Further, the preparation method of described water-fastness cow split leather, specifically comprises the following steps：
Step 1, rewetting：The skin base learnt from else's experience 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, discharge opeing, 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, neutralize：Retanning cladding obtained by step 3 is neutralized, obtains neutralization cladding；
Step 5, secondary wash water：Secondary wash water is carried out by cladding is neutralized obtained by step 4, discharge opeing, obtains secondary wash water cladding；
Step 6, filling：Secondary wash water cladding obtained by step 5 is filled, obtains filling cladding；
Step 7, dyeing：According to the water soluble dispersing agent of the mass percent meter of skin base, first addition 1.8%-2.2%, then
Dyestuff is added, the addition of dyestuff is adjusted according to cladding color, is run 60-80min, is obtained dyeing cladding；
Step 8, stuffing：Dyeing cladding obtained by step 7 is subjected to stuffing, obtains stuffing cladding；
Step 9, Gu acid：Stuffing cladding obtained by step 8 is subjected to solid acid, obtains solid sour cladding；
Step 10, three times wash water：Solid sour cladding obtained by step 9 is subjected to wash water three times, obtains wash water cladding three times；
Step 11, it is fixed：By the gained of step 3 ten, wash water cladding is fixed three times, obtains fixed cladding；
Step 12, four wash waters：Fixed cladding obtained by step 11 is subjected to four wash waters, gone out after drum successively through dry
It is dry, hang and dry in the air, the soft, buffing that shakes, fall soft, produce the water-fastness cow split leather.
Further, rewetting is specially described in step 1：The skin base learnt from else's experience after processing water squeezing, shaving, it is placed in and turns
In drum, according to the mass percent meter of skin base, by the PAS TOSOL M2 degreasings of 150%-200% water, 0.4%-0.6%
The oxalic acid of agent, 0.2%-0.4% rewetting agent and 0.7%-0.9% is added in rotary drum, and regulation pH is 3.8-4.0, runs 90-
Discharge opeing after 120min, wherein the water temperature is 40-45 DEG C.
Further, retanning is specially described in step 3：According to the mass percent meter of skin base, by 120%-
150% water, 0.25%-0.35% formic acid, 2.5%-3.5% chrome green are added in rotary drum, and regulation pH is 3.5-
3.8, discharge opeing after 90-120min is run, wherein the water temperature is 24-26 DEG C.
Further, neutralized described in step 4 and be specially：According to the mass percent meter of skin base, by 120%-
150% water, 2.0%-3.0% sodium formate, 1.8%-2.2% Bath pellet FC nertralizers, 1%-1.5% sodium bicarbonate add
Enter in rotary drum, regulation pH is 5.8-6.1, runs discharge opeing after 90-120min, wherein the water temperature is 24-30 DEG C.
Further, filling is specially described in step 6：According to the mass percent meter of skin base, by 40%-60%
Water, 1.0%-1.5% water polyacrylic acid emulsion, 1.5%-2.0% vegetable tanning agent add in rotary drum, run 25-
35min, wherein the water temperature is 24-30 DEG C.
Further, stuffing is specially described in step 8：According to the mass percent meter of skin base, by 3.5%-
4.5% light and soft type fatting agent, 0.8%-1.2% natural neat's foot oil, 3.5%-4.5% anionic Synthetic Oil,
0.4%-0.6% lanolin is added in rotary drum, runs 75-85min.
Further, solid acid-specific is described in step 9：According to the mass percent meter of skin base, by 250%-
300% water, 0.45%-0.55% formic acid are added in rotary drum, run 15-25min, add 0.45%-0.55% first
Acid, 15-25min is run, add 0.45%-0.55% formic acid, run 15-25min, regulation pH is 3.8-4.0, discharge opeing；
Wherein described water temperature is 50-55 DEG C.
Further, fixation is specially described in step 11：According to the mass percent meter of skin base, by 200%-
250% water, 0.8%-1.2% TRUPOFIX WP fixatives add rotary drum, run 45-55min, add 1.2%-
1.8% TRUPOFIX WP fixatives, after running 40-55min, discharge opeing, 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 are specially：According to the mass percent meter of skin base, 200%-250% water is added into rotary drum, operation
After 10-15min, draining, the water temperature is 24-30 DEG C.
Compared with prior art, its advantage is the present invention：
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 → shaken 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 agents and rewetting agent compatible use so that skin base rewetting is more abundant, is advantageous to be wrapped in skin base fiber table
Auxiliary agent in the moisture and subsequent handling in face swaps, ensure that skin base in subsequent handling and other auxiliary agents combination jail
Degree；In neutralization step, Bath pellet FC nertralizers and sodium formate, sodium bicarbonate compatible use can be prevented effectively 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 emulsion and vegetable tanning
Agent compatible use, first fills poststaining, dye molecule is combined with skin base azelon more firm, 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, makes fatting agent not migrated in water-washing process, so as to further ensure the washing color fastness of leather, in a word,
The cow split skin produced using the preparation method of the present invention, its water-wash resistance be not available for current existing cow split skin,
And the physical property of cladding is also more excellent；
Second：The auxiliary agent material that the present invention uses in each operation is water miscible material, friendly to environment and human body, no
Secondary pollution can be produced；
3rd, preparation method of the invention is simple and easy to do, suitable in this area popularization and application.
Embodiment
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 scope.The Trupot an Dar dispersants of Trumpler companies can be used in the water soluble dispersing agent used in the present invention,
Pastosol M2 degreasing agents are purchased from Trumpler companies, and rewetting agent suggestion uses the You Sha nations W rewettings agent of BASF, Bath
Red FC nertralizers are purchased from BASF, the suggestion of water polyacrylic acid emulsion uses TJ-C2150 soft acrylics, can be purchased from
Sichuan Ting Jiang new materials limited company, vegetable tanning agent suggestion use Trupotan AG vegetable tanning agents, 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 materials limited 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 materials limited company
F210, the suggestion of anionic Synthetic Oil are synthesized using the LIPSOL MSW of SCHILL+SEILACHER companies (abbreviation SS companies)
Grease, lanolin, TRUPOFIX WP fixatives can be purchased from Tang Pule chemical dyestuffs (Jiaxing) Co., Ltd.Institute in the present invention
, unless otherwise instructed, can be by being commercially available with reagent raw material.
Embodiment 1
The preparation method of water-fastness cow split leather, comprises the following steps：The cow split learnt from else's experience 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, comprise the following steps that：
Step 1, rewetting：The skin base learnt from else's experience after processing water squeezing, shaving, is placed in rotary drum and carries out rewetting, obtain rewetting skin
Material, the rewetting are specially：According to the mass percent meter of skin base, by 180% water, 0.5% PASTOSOL M2 degreasings
Agent, 0.3% rewetting agent and 0.8% oxalic acid are added in rotary drum, and regulation pH is 3.8-4.0, run discharge opeing 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, discharge opeing, obtains a wash water skin
Material, the wash water are specially：According to the mass percent meter of skin base, 220% water is added into rotary drum, 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 is：According to the mass percent meter of skin base, 130% water, 0.3% formic acid, 3.0% chrome green are added into rotary drum
In, regulation pH is 3.5-3.8, runs discharge opeing after 100min, wherein the water temperature is 25 DEG C；
Step 4, neutralize：Retanning cladding obtained by step 3 is neutralized, obtains neutralization cladding, the neutralization is specially：Press
According to the mass percent meter of skin base, by 135% water, 2.5% sodium formate, 2.0% Bath pellet FC nertralizers, 1.2%
Sodium bicarbonate is added in rotary drum, and regulation pH is 5.8-6.1, runs discharge opeing after 100min, wherein the water temperature is 27 DEG C；
Step 5, secondary wash water：Secondary wash water is carried out by cladding is neutralized obtained by step 4, discharge opeing, obtains secondary wash water cladding,
The wash water is specially：According to the mass percent meter of skin base, 225% water is added into rotary drum, after running 10min, draining, institute
Water temperature is stated as 28 DEG C；
Step 6, filling：Secondary wash water cladding obtained by step 5 is filled, obtains filling cladding, the filling is specific
For：According to the mass percent meter of skin base, by 50% water, 1.2% water polyacrylic acid emulsion, 1.8% vegetable tanning
Agent is added in rotary drum, runs 30min, wherein the water temperature is 26 DEG C；
Step 7, dyeing：According to the water soluble dispersing agent of the mass percent meter of skin base, first addition 2.0%, dye is added
Material, the addition of dyestuff are adjusted according to cladding color, are run 70min, are obtained dyeing cladding；
Step 8, stuffing：Dyeing cladding obtained by step 7 is subjected to stuffing, obtains stuffing cladding, the stuffing is specially：Press
According to the mass percent meter of skin base, 4% light and soft type fatting agent, 1.0% natural neat's foot oil, 4% anionic are synthesized
Grease, 0.5% lanolin are added in rotary drum, 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 is：Press
According to the mass percent meter of skin base, 280% water, 0.5% formic acid are added in rotary drum, 20min is run, adds 0.5%
Formic acid, run 20min, add 0.5% formic acid, run 20min, regulation pH is 3.8-4.0, discharge opeing；Wherein described water
Temperature is 50 DEG C；
Step 10, three times wash water：Solid sour cladding obtained by step 9 is subjected to wash water three times, obtains wash water cladding three times, it is described
Wash water is specially：According to the mass percent meter of skin base, 220% water is added into rotary drum, after running 10min, draining, the water
Temperature is 26 DEG C；
Step 11, it is fixed：By the gained of step 3 ten, wash water cladding is fixed three times, obtains fixed cladding, the fixation
Specially：According to the mass percent meter of skin base, 220% water, 1.0% TRUPOFI X WP fixatives are added into rotary drum,
50min is run, adds 1.5% TRUPOFIX WP fixatives, after running 50min, discharge opeing, wherein the water temperature is 50 DEG C；
Step 12, four wash waters：Fixed cladding obtained by step 11 is subjected to four wash waters, the wash water is specially：
According to the mass percent meter of skin base, 220% water is added into rotary drum, after running 10min, draining, the water temperature is 26 DEG C；Go out
After drum successively through drying, hang and dry in the air, the soft, buffing that shakes, fall soft, produce the water-fastness cow split leather.
Embodiment 2
The preparation method of water-fastness cow split leather, comprises the following steps：The cow split learnt from else's experience 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, comprise the following steps that：
Step 1, rewetting：The skin base learnt from else's experience after processing water squeezing, shaving, is placed in rotary drum and carries out rewetting, obtain rewetting skin
Material, the rewetting are specially：According to the mass percent meter of skin base, by 150% water, 0.4% PASTOSOL M2 degreasings
Agent, 0.2% rewetting agent and 0.7% oxalic acid are added in rotary drum, and regulation pH is 3.8-4.0, run discharge opeing 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, discharge opeing, obtains a wash water skin
Material, the wash water are specially：According to the mass percent meter of skin base, 200% water is added into rotary drum, 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 is：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, regulation pH is 3.5-3.8, runs discharge opeing after 90min, wherein the water temperature is 26 DEG C；
Step 4, neutralize：Retanning cladding obtained by step 3 is neutralized, obtains neutralization cladding, the neutralization is specially：Press
According to the mass percent meter of skin base, by 120%% water, 2.0% sodium formate, 1.8% Bath pellet FC nertralizers, 1%
Sodium bicarbonate is added in rotary drum, and regulation pH is 5.8-6.1, runs discharge opeing after 90min, wherein the water temperature is 30 DEG C；
Step 5, secondary wash water：Secondary wash water is carried out by cladding is neutralized obtained by step 4, discharge opeing, obtains secondary wash water cladding,
The wash water is specially：According to the mass percent meter of skin base, 200% water is added into rotary drum, after running 10min, draining, institute
Water temperature is stated as 30 DEG C；
Step 6, filling：Secondary wash water cladding obtained by step 5 is filled, obtains filling cladding, the filling is specific
For：According to the mass percent meter of skin base, by 40% water, 1.0% water polyacrylic acid emulsion, 1.5% vegetable tanning
Agent is added in rotary drum, runs 25min, wherein the water temperature is 30 DEG C；
Step 7, dyeing：According to the water soluble dispersing agent of the mass percent meter of skin base, first addition 1.8%, dye is added
Material, the addition of dyestuff are adjusted according to cladding color, are run 60min, are obtained dyeing cladding；
Step 8, stuffing：Dyeing cladding obtained by step 7 is subjected to stuffing, obtains stuffing cladding, the stuffing is specially：Press
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 are added in rotary drum, 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 is：Press
According to the mass percent meter of skin base, 250% water, 0.45% formic acid are added in rotary drum, 15min is run, adds
0.45% formic acid, 15min is run, add 0.45% formic acid, run 15min, regulation pH is 3.8-4.0, discharge opeing；Wherein
The water temperature is 50 DEG C；
Step 10, three times wash water：Solid sour cladding obtained by step 9 is subjected to wash water three times, obtains wash water cladding three times, it is described
Wash water is specially：According to the mass percent meter of skin base, 200% water is added into rotary drum, after running 10min, draining, the water
Temperature is 24 DEG C；
Step 11, it is fixed：By the gained of step 3 ten, wash water cladding is fixed three times, obtains fixed cladding, the fixation
Specially：According to the mass percent meter of skin base, 200% water, 0.8% TRUPOFI X WP fixatives are added into rotary drum,
45min is run, adds 1.2% TRUPOFIX WP fixatives, after running 40min, discharge opeing, wherein the water temperature is 55 DEG C；
Step 12, four wash waters：Fixed cladding obtained by step 11 is subjected to four wash waters, the wash water is specially：
According to the mass percent meter of skin base, 200% water is added into rotary drum, after running 10min, draining, the water temperature is 24 DEG C；Go out
After drum successively through drying, hang and dry in the air, the soft, buffing that shakes, fall soft, produce the water-fastness cow split leather.
Embodiment 3
The preparation method of water-fastness cow split leather, comprises the following steps：The cow split learnt from else's experience 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, comprise the following steps that：
Step 1, rewetting：The skin base learnt from else's experience after processing water squeezing, shaving, is placed in rotary drum and carries out rewetting, obtain rewetting skin
Material, the rewetting are specially：According to the mass percent meter of skin base, by 200% water, 0.6% PASTOSOL M2 degreasings
Agent, 0.4% rewetting agent and 0.9% oxalic acid are added in rotary drum, and regulation pH is 3.8-4.0, run discharge opeing 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, discharge opeing, obtains a wash water skin
Material, the wash water are specially：According to the mass percent meter of skin base, 250% water is added into rotary drum, 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 is：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, regulation pH is 3.5-3.8, runs discharge opeing after 120min, wherein the water temperature is 24 DEG C；
Step 4, neutralize：Retanning cladding obtained by step 3 is neutralized, obtains neutralization cladding, the neutralization is specially：Press
According to the mass percent meter of skin base, by 150% water, 3.0% sodium formate, 2.2% Bath pellet FC nertralizers, 1.5%
Sodium bicarbonate is added in rotary drum, and regulation pH is 5.8-6.1, runs discharge opeing after 120min, wherein the water temperature is 24 DEG C；
Step 5, secondary wash water：Secondary wash water is carried out by cladding is neutralized obtained by step 4, discharge opeing, obtains secondary wash water cladding,
The wash water is specially：According to the mass percent meter of skin base, 250% water is added into rotary drum, after running 15min, draining, institute
Water temperature is stated as 24 DEG C；
Step 6, filling：Secondary wash water cladding obtained by step 5 is filled, obtains filling cladding, the filling is specific
For：According to the mass percent meter of skin base, by 60% water, 1.5% water polyacrylic acid emulsion, 2.0% vegetable tanning
Agent is added in rotary drum, runs 35min, wherein the water temperature is 24 DEG C；
Step 7, dyeing：According to the water soluble dispersing agent of the mass percent meter of skin base, first addition 2.2%, dye is added
Material, the addition of dyestuff are adjusted according to cladding color, are run 80min, are obtained dyeing cladding；
Step 8, stuffing：Dyeing cladding obtained by step 7 is subjected to stuffing, obtains stuffing cladding, the stuffing is specially：Press
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 are added in rotary drum, 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 is：Press
According to the mass percent meter of skin base, 300% water, 0.55% formic acid are added in rotary drum, 25min is run, adds
0.55% formic acid, 25min is run, add 0.55% formic acid, run 25min, regulation pH is 3.8-4.0, discharge opeing；Wherein
The water temperature is 55 DEG C；
Step 10, three times wash water：Solid sour cladding obtained by step 9 is subjected to wash water three times, obtains wash water cladding three times, it is described
Wash water is specially：According to the mass percent meter of skin base, 250% water is added into rotary drum, after running 15min, draining, the water
Temperature is 24 DEG C；
Step 11, it is fixed：By the gained of step 3 ten, wash water cladding is fixed three times, obtains fixed cladding, the fixation
Specially：According to the mass percent meter of skin base, 250% water, 1.2% TRUPOFI X WP fixatives are added into rotary drum,
55min is run, adds 1.8% TRUPOFIX WP fixatives, after running 55min, discharge opeing, wherein the water temperature is 55 DEG C；
Step 12, four wash waters：Fixed cladding obtained by step 11 is subjected to four wash waters, the wash water is specially：
According to the mass percent meter of skin base, 250% water is added into rotary drum, after running 15min, draining, the water temperature is 24 DEG C；Go out
After drum successively through drying, hang and dry in the air, the soft, buffing that shakes, fall soft, produce the water-fastness cow split leather.
Reference examples 1
Commercially available two layers of ox-hide of certain brand.
Leather progress performance test to leather, reference examples made from the embodiment of the present invention 1 to 3, as a result such as table 1 below institute
Show：
Leather degree of getting wet is determined as follows：
1st, specimen size：3 a diameter of 220mm test piece to be measured is taken, is tested successively, test result is averaged；
2nd, method of testing：With reference to ASTM-D1913-2000, tester table is degree of getting wet analyzer, model G T-7033N；
3rd, testing procedure：
(1) Waterproof leather is fixed with sample support thing；
(2) sample support thing is placed on support；
(3) 250 milliliters of distilled water are poured into funnel rapidly；
(4) once water has sprayed, sample support thing is removed together with sample immediately；
(5) supporter is tapped twice in solid objects, it is ensured that sample front water droplet is downward；
(6) made comparisons with reference picture, observe the wetness degree of sample.
4th, points for attention：
(1) 250 milliliter of distilled water must flow in 25-30s；
(2) sample mount is straight at 45 degree of angles；
(3) nozzle lower surface center keeps 152.4mm spacing with specimen surface center；
(4) hand is avoided to touch as far as possible in test process, in order to avoid influence result of the test.
5th, result evaluation：
100 points (5 grades)：(upper surface does not get wet or moistened NO STICKING OR WETTING OF UPPER SURFACE
It is wet).
90 points (4 grades)：(upper surface is light by 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 point-like wetting upper surface).
70 points (2 grades)：(there is part whole upper surface to PARTIAL WETTING OF WHOLE OF UPPER SURFACE
Wetting).
50 points (1 grades)：COMPLETE WETTING OF WHOLE OF UPPER SURFACE (all moisten whole upper surface
It is wet).
0 point (0 grade)：COMPLETE WETTING OF WHOLE UPPER AND LOWER SURFACES (whole upper tables
Face and lower surface all soak).
The performance test data table of table 1
As seen from the above table, water-fastness cow split leather made from preparation 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
Merely illustrating the principles of the invention described in book, without departing from the spirit and scope of the present invention, the present invention also have
Various changes and modifications, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention
By appended claims and its equivalent thereof.
Claims (10)
1. the preparation method of water-fastness cow split leather, it is characterised in that comprise the following steps：Learnt from else's experience 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 wash water → fixation → tetra- time wash water → the drying → extension dries in the air → of → acid → three times is shaken, soft → buffing → falls soft, produces described water-fastness
Cow split leather.
2. the preparation method of water-fastness cow split leather according to claim 1, it is characterised in that specifically include following step
Suddenly：
Step 1, rewetting：The skin base learnt from else's experience after processing water squeezing, shaving carries out rewetting, obtains rewetting cladding；
Step 2, a wash water：The rewetting cladding that step 1 is obtained carries out a wash water, discharge opeing, 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, neutralize：Retanning cladding obtained by step 3 is neutralized, obtains neutralization cladding；
Step 5, secondary wash water：Secondary wash water is carried out by cladding is neutralized obtained by step 4, discharge opeing, obtains secondary wash water cladding；
Step 6, filling：Secondary wash water cladding obtained by step 5 is filled, obtains filling cladding；
Step 7, dyeing：According to the mass percent meter of skin base, 1.8%-2.2% water soluble dispersing agent is first added, adds dye
Material, the addition of dyestuff are adjusted according to cladding color, are run 60-80min, are obtained dyeing cladding；
Step 8, stuffing：Dyeing cladding obtained by step 7 is subjected to stuffing, obtains stuffing cladding；
Step 9, Gu acid：Stuffing cladding obtained by step 8 is subjected to solid acid, obtains solid sour cladding；
Step 10, three times wash water：Solid sour cladding obtained by step 9 is subjected to wash water three times, obtains wash water cladding three times；
Step 11, it is fixed：By the gained of step 3 ten, wash water cladding is fixed three times, obtains fixed cladding；
Step 12, four wash waters：Fixed cladding obtained by step 11 is subjected to four wash waters, gone out after drum successively through drying, extension
Dry in the air, the soft, buffing that shakes, fall soft, produce the water-fastness cow split leather.
3. the preparation method of water-fastness cow split leather according to claim 2, it is characterised in that returned described in step 1
It is wet to be specially：The skin base learnt from else's experience after processing water squeezing, shaving, is placed in rotary drum, will according to the mass percent meter of skin base
150%-200% water, 0.4%-0.6% PASTOSOL M2 degreasing agents, 0.2%-0.4% rewetting agent and 0.7%-0.9% grass
Acid is added in rotary drum, and regulation pH is 3.8-4.0, runs discharge opeing after 90-120min, wherein the water temperature is 40-45 DEG C.
4. the preparation method of water-fastness cow split leather according to claim 2, it is characterised in that multiple described in step 3
Tan is specially：According to the mass percent meter of skin base, by 120%-150% water, 0.25%-0.35% formic acid, 2.5%-3.5%
Chrome green is added in rotary drum, and regulation pH is 3.5-3.8, discharge opeing after 90-120min is run, wherein the water temperature is 24-26
℃。
5. the preparation method of water-fastness cow split leather according to claim 2, it is characterised in that in described in step 4
Be specially：According to the mass percent meter of skin base, by 120%-150% water, 2.0%-3.0% sodium formate, 1.8%-2.2%
Bath pellet FC nertralizers, 1%-1.5% sodium bicarbonate are added in rotary drum, and regulation pH is 5.8-6.1, runs discharge opeing after 90-120min,
Wherein described water temperature is 24-30 DEG C.
6. the preparation method of water-fastness cow split leather according to claim 2, it is characterised in that filled out described in step 6
Fill specially：According to the mass percent meter of skin base, by 40%-60% water, 1.0%-1.5% water polyacrylic acid emulsion,
1.5%-2.0% vegetable tanning agent is added in rotary drum, runs 25-35min, wherein the water temperature is 24-30 DEG C.
7. the preparation method of water-fastness cow split leather according to claim 2, it is characterised in that add described in step 8
Fat is specially：According to the mass percent meter of skin base, by 3.5%-4.5% light and soft type fatting agent, 0.8%-1.2% natural cow hoof
Oil, 3.5%-4.5% anionic Synthetic Oil, 0.4%-0.6% lanolin are added in rotary drum, run 75-85min.
8. the preparation method of water-fastness cow split leather according to claim 2, it is characterised in that solid described in step 9
Acid-specific is：According to the mass percent meter of skin base, 250%-300% water, 0.45%-0.55% formic acid are added in rotary drum,
15-25min is run, adds 0.45%-0.55% formic acid, runs 15-25min, adds 0.45%-0.55% formic acid, fortune
Row 15-25min, regulation pH are 3.8-4.0, discharge opeing；Wherein described water temperature is 50-55 DEG C.
9. the preparation method of water-fastness cow split leather according to claim 2, it is characterised in that described in step 11
Fixation is specially：According to the mass percent meter of skin base, 200%-250% water, 0.8%-1.2% TRUPOFIX WP are fixed
Agent adds rotary drum, runs 45-55min, adds 1.2%-1.8% TRUPOFIX WP fixatives, after running 40-55min, row
Liquid, wherein the water temperature is 50-55 DEG C.
10. the preparation method of water-fastness cow split leather according to claim 2, it is characterised in that the step 2
Wash water, the secondary wash water of step 5, four wash waters of the wash water three times of step 10 and step 12 are specially：According to skin base
Mass percent meter, 200%-250% water is added into rotary drum, after running 10-15min, draining, the water temperature is 24-30 DEG C.
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