CN107904335A - A kind of leather wet finishing technique for improving leather potential difference problem - Google Patents
A kind of leather wet finishing technique for improving leather potential difference problem Download PDFInfo
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- CN107904335A CN107904335A CN201711056461.0A CN201711056461A CN107904335A CN 107904335 A CN107904335 A CN 107904335A CN 201711056461 A CN201711056461 A CN 201711056461A CN 107904335 A CN107904335 A CN 107904335A
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- leather
- potential difference
- wet
- difference problem
- ion polymer
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Classifications
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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
-
- 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
- C14C11/00—Surface finishing of 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
-
- 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
- C14C3/16—Chemical tanning by organic agents using aliphatic aldehydes
-
- 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
- C14C3/22—Chemical tanning by organic agents using polymerisation products
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The present invention relates to leather-making technology technical field, a kind of leather wet finishing technique for improving leather potential difference problem is provided, after rinsing, increase " filling a vacancy " process before retanning, utilize wet leather empty loose position making choice property filling of the amphoteric ion polymer to being made of collagenous fibres, it can effectively improve leather potential difference problem, whole crust leather thickness almost uniformity after being arranged by the leather wet finishing technique of the improvement leather potential difference problem, the empty loose position of belly and other positions almost indifference, improve the flat fineness of crust leather grain, crust leather utilization rate can improve 5 10%.
Description
Technical field
The present invention relates to leather-making technology technical field, more particularly to a kind of leather dressing for improving leather potential difference problem
Technique.
Background technology
Leather is to pass through sufficiently complex physics by Animal Skin（Machinery）Processing and chemical treating process and it is manufactured.Ox
Skin is the most common raw material skin of process hides, has certain difference between its each position：From thickness, buttocks is most thick, and belly is most
Thin, neck falls between, and the thickness of buttocks is about 2 times of belly thickness；From the point of view of collagenous fibres weave situation, buttocks is most
To be close, it is higher to knit angle；Belly is more loose, and it is relatively low to knit angle；Neck falls between.In addition, also deposited between different Animal Skins
In certain difference.
And in leather production, raw material skin almost obtains uniform processing, therefore is bound to cause some position processing
Deficiency, some position processing are too strong.And in production, in order to obtain ideal effect, some equalization point is usually selected, is made
Big leather area is normally handled as far as possible, is so bound to cause the empty pine in some positions, position difference is big, influences product matter
Amount, and the part between the rib and the hip position of general leather has 2-5 square feet because position difference reason cannot utilize, and be easy to cause resource wave
Take.
Position difference is Animal Skin inherent characteristic, and common processing method is：1）Physical method：Skin batching is selected first, is used
Different processing technology classification processing, see that skin does skin；Focus on local split or shaving processing；Later stage draws soft changed by arranging
It is kind.By batching, the difference between animal hide can be eliminated, but the position that cannot eliminate same Animal Skin is poor；Other hands
Section can obtain certain effect when carrying out and individually handling, but can not adapt to the needs of the big production of scale.2）Chemical method：
Appropriate combined treatment is selected for different raw material skins, solves position official post finished leather feel the whole body uniformity, such as:Using
Local bag enzyme, bag alkali or bag height alkali, suppression tenderizer, office position are scrounged, but are not suitable for mass production and are used, and can not be met
The requirement produced greatly.
The content of the invention
Therefore, in view of the problems of the existing technology, the present invention proposes a kind of leather wet for improving leather potential difference problem
Finishing technique, the leather wet finishing technique for improving leather potential difference problem increase " filling a vacancy " after rinsing, before retanning
Process, using wet leather empty loose position making choice property filling of the amphoteric ion polymer to being made of collagenous fibres, can effectively change
Kind leather potential difference problem, whole crust leather thickness after being arranged by the leather wet finishing technique of the improvement leather potential difference problem
Degree almost uniformity, the empty loose position of belly and other positions almost indifference, improves the flat fineness of crust leather grain, crust leather utilizes
Rate can improve 5-10%.
To realize above-mentioned technical problem, the solution that the present invention takes is：A kind of skin for improving leather potential difference problem
Remove from office dressing technique, including following process：By by water squeezing, shaving wet blue leather batching, weigh → rinsing → fill a vacancy → retanning
→ neutralization → filling, dyeing → stuffing → chromatography；Wherein, it is described fill a vacancy process be by rinsing wet blue leather rotary drum in,
Water and amphoteric ion polymer are added, is rotated 30-60 minutes in rotary drum, adjusts PH with sodium formate, it is 4.0-4.2 to control PH.
It is further that the process of filling a vacancy is in the rotary drum of the wet blue leather by rinsing, adds wet blue leather weight
35 DEG C of the water of 100%-120%, then adds the amphoteric ion polymer of wet blue leather weight 3-5%, 30-60 is rotated in rotary drum
Minute, rotary drum rotating speed is 7-10 revs/min, adjusts PH with sodium formate, it is 4.0-4.2 to control PH.
It is further in the process of filling a vacancy when adding amphoteric ion polymer, to be additionally added anionic polycarboxylates.
It is further in the process of filling a vacancy when adding amphoteric ion polymer, to be additionally added wet blue leather weight 1-2%
Anionic polycarboxylates.
It is further that the amphoteric ion polymer in the process of filling a vacancy is for hybrid charge-N+(R)3With-
COO-Or-SO3 -Compound, the amphoteric ion polymer is at least the both sexes of both sexes acrylate copolymer, aromatic sulphonic acid
One kind in condensation product, the amphoteric resin of melamine amine-aldehyde condensation, feature both sexes biopolymer, albumen and modified protein.
It is further that the amphoteric ion polymer is added several times, and order of addition is according to zwitterion polymerization
The big minispread of thing molecular weight, the big amphoteric ion polymer of molecular weight first add.
By using preceding solution, the beneficial effects of the invention are as follows：The improvement leather potential difference designed as described above
The leather wet finishing technique of problem, collagenous fibres of different sizes can be filled based on the different amphoteric ion polymer of molecular weight
Gap, after rinsing, increases " filling a vacancy " process before retanning, wet to being made of collagenous fibres using amphoteric ion polymer
Empty making choice property of the loose position filling of leather is poor to improve the position of leather；And further, root when amphoteric ion polymer adds
Added several times according to the size of molecular weight（It is first big after small）, make filling more preferable, be conducive to improve the flat fineness of grain；Further
, collagenous fibres sheet carries certain cation as both sexes after chrome tanning, therefore, in process of filling a vacancy coordinates and adds the moon
Ionomer adjusts the electrical of collagenous fibres, helps to lift the selective filling effect of amphiphilic polymers.
Embodiment
Carry out the embodiment that the present invention will be described in detail below with reference to specific embodiment, how skill is applied to the present invention whereby
Art means solve technical problem, and that reaches technique effect realizes that process can fully understand and implement according to this.If do not refer in particular to
Conventional means bright, that the technological means employed in embodiment is well known to those skilled in the art, used reagent and production
Product are also available commercial.The various processes and method not being described in detail are conventional methods as known in the art, this hair
Useless ox hair used in bright is the ox hair that gives up caused by XingYe Leather Science Co., Ltd's process hides depilation, and agents useful for same is equal
For the common agents being commercially available by commercial sources.
Embodiment 1
Embodiment 1 discloses, a kind of leather wet finishing technique for improving leather potential difference problem, including following process：
1st, by the wet blue leather batching by water squeezing, shaving, weigh, using wet blue leather weight as 100 listed as parts by weight other materials
Addition；
2nd, rinse：45 DEG C of 300 parts of water, 0.5 part of formic acid is added in rotary drum, 0.2 part of surfactant B orron SAF, turn
60 Fujian, draining are clean；And with 300 parts 35 DEG C of washing 5min；
3rd, fill a vacancy：35 DEG C of 120 parts of water is added in the rotary drum of the wet blue leather by rinsing, what 2.5 parts of melamine amine-aldehydes were condensed
Amphoteric resin（Tang Pule, TRUPOTAN MAU）, 2 parts of modified proteins（Da Wei, DOWELLTAN TB66）, turn 50min, in rotary drum
It is 4.0-4.2 to adjust pH with sodium formate in rotation process；
4th, retanning：1 part of dyestuff, 2 parts of melamine retanning agents will be added in the rotary drum of wet blue leather by processing of filling a vacancy
TANINTAN RX-L（Inscription is many）, 2 parts of acrylic acid double tanning agent LEUKOTAN 1084（Lang Sheng）, turn 60min, add 4 parts of chromium afterwards
Tanning agent（Jing Shan companies of Turkey）, 2 parts of BO containing chrome syntans（Shanghai Jun Ya Industrial Co., Ltd.s）, 1 part of modified glutaraldehyde tan
Agent GTA（This tal fibre Chemical Co., Ltd.）, 1 part of aromatic series fatting agent XSW（Qihe Leahou Chemical Industry Co., Ltd.）, turn 90min, use
Sodium formate adjusts pH to 4.0, and 240min is stood after turning 120min；Then 10min is turned, draining is clean；
5th, neutralize：100 parts 35 DEG C of water, 1.5 parts of sodium formates, 1 part of neutralization are added in the clean rotary drum of the draining Jing Guo retanning
Tannin PAK（Gold peaking work trade Co., Ltd of Jinjiang City）, 1 part of aromatic series fatting agent XSW, turns 20min；PH is adjusted with sodium bicarbonate
To 4.8, turn 60min；Add 3 parts of maleic anhydride of styrene polymer（Shanghai Jun Ya Industrial Co., Ltd.s, Tag 25）, turn
60min；Draining is clean；Washing 5min is carried out with 300 parts 35 DEG C of water；
6th, fill, dye：Add 80 parts 35 DEG C of water in the clean rotary drum of the draining of sum in process, molecule acrylic acid in 3 parts
Resin tanning agent R35（Shanghai Jun Ya Industrial Co., Ltd.s）, 1 portion of synthetic fat liquor 5193（The limited public affairs of dolantin booth river new material share
Department）, turn 30min；Add 5 parts of wattle skin vegetable tanning agent FS（The excellent prosperous commercial Co., Ltd of that in Wenzhou）, 3 parts of scattered tannin 369（Moral
Mei Ting rivers new material limited company）, 3 parts of aromatic polymer RXY（Dolantin Ting Jiang new materials limited company）, 3 parts
Aromatic hydroxy phenol and phenol sulfonic acid condensation product RL（De Rui leather chemical corporation, Ltd.s）, 2 parts of dicyandiamide DF-585（Jinan still promise chemical industry
Co., Ltd）, 3 parts of Techniques of Protein Filling Agents SD（Ten thousand tonneau chemical materials Co., Ltd of Xiamen City）, 1 part of accessory syntan JOM
（Zhejiang Sheng Hui leather chemical corporation, Ltd.s）, 3 parts of dyestuffs, turn 60 min；Add in 3 parts, small molecule acrylate resin tanning agent R83
（Tang Pule Leather Chemicals Co., Ltd）, 1 part of lecithin LTP（Yi De Fine Chemical Co., Ltd）, turn 90 min；
7th, stuffing：Water, the 3 parts of phenolic condensate B of 200 parts 52 DEG C of supplement（Shanghai Jun Ya Industrial Co., Ltd.s）, turn 30 min；Add
Enter 4 parts of lecithin LTP（Yi De Fine Chemical Co., Ltd）, 3 parts of sulphation neat's foot oil COYD-7（The meaning limited public affairs of moral fine chemistry industry
Department）, 2 parts of sulfated castor oil BCA（Yi De Fine Chemical Co., Ltd）, 3 portions of synthetic fat liquors 5193（Dolantin booth river new material
Limited company）, 1 part of lanolin fatting agent ZBN（BASTAN INTERNATION TRADE Ltd）, 2 parts of big or middle molecules third
Olefin(e) acid resin tanning agent 1084（Lang Sheng leather chemical corporation, Ltd.s）, turn 120min；
8th, chromatography：Divide 2 additions 2 parts of formic acid, turn 30 min；Draining is clean；Add 300 parts 52 DEG C water, 0.5 part of dyestuff, turn
15 min, add 0.7 part of formic acid and turn 15 min；Add 0.5 part of dyestuff, turn 15 min, 0.8 part of formic acid, turn 15min, finally
Add 0.5 part of oily wax fatting agent SSW（This tal fibre fine chemicals Co., Ltd）, turn 30 min.
Whole of whole crust leather after the arrangement of leather wet finishing technique by improving leather potential difference problem described in embodiment 1
Crust leather not loose side, good hand feeling, thickness almost uniformity, the empty loose position of former belly almost indifference compared with other positions；
Utilization rate improves 10% or so.
Embodiment 2
The leather wet finishing technique of improvement leather potential difference problem and embodiment 1 are basically identical in embodiment 2, and difference lies in real
The process of filling a vacancy applied in example 2 is as follows：35 DEG C of 120 parts of water is added in the rotary drum of the wet blue leather by rinsing, 2 parts of anion gather
Carboxylate（Spain INCO, INCOFLOR PRETAN ANF）, the amphoteric resin of 2 parts of melamine amine-aldehyde condensations（Tang Pule,
TRUPOTAN MAU）, turn 50min, it is 4.0-4.2 to adjust pH with sodium formate.
Whole of whole crust leather after the arrangement of leather wet finishing technique by improving leather potential difference problem described in embodiment 2
Crust leather not loose side, good hand feeling, thickness almost uniformity, the empty loose position of former belly almost indifference compared with other positions；
Utilization rate improves 10% or so.
Embodiment 3
The leather wet finishing technique of improvement leather potential difference problem and embodiment 1 are basically identical in embodiment 3, and difference lies in real
The process of filling a vacancy applied in example 3 is as follows：35 DEG C of 120 parts of water, 1.5 parts of acrylic acid are added in the rotary drum of the wet blue leather by rinsing
Polymer（De Rui, MAGNOPAL TGR）, it is 4.0 to adjust pH, turns 30min；Add 1.5 parts of anionic polycarboxylates（Spain
INCO, INCOFLOR PRETAN ANF）, it is 4.1 to adjust pH, turns 30min；The amphoteric resin of 2 parts of melamine amine-aldehyde condensations（Soup
Pu Le, TRUPOTAN MAU）, it is 4.2 to adjust pH, turns 60min.
Whole of whole crust leather after the arrangement of leather wet finishing technique by improving leather potential difference problem described in embodiment 3
Crust leather not loose side, good hand feeling, thickness almost uniformity, the empty loose position of former belly almost indifference compared with other positions；
Utilization rate improves 10% or so.
In conclusion the leather wet finishing technique for improving leather potential difference problem increases after rinsing, before retanning
Add " filling a vacancy " process, empty the making choice property of loose position of wet leather being made of collagenous fibres filled using amphoteric ion polymer,
Leather potential difference problem is can effectively improve, it is whole after being arranged by the leather wet finishing technique of the improvement leather potential difference problem
Crust leather thickness almost uniformity, the empty loose position of belly and other positions almost indifference, improves the flat fineness of crust leather grain,
Crust leather utilization rate can improve 5-10%.
The foregoing descriptions are merely the embodiment using this origination techniques content, any those skilled in the art use this wound
Make done modifications and changes, all belong to the scope of the claims of this creation opinion, and be not limited to those disclosed embodiments.
Claims (6)
1. a kind of leather wet finishing technique for improving leather potential difference problem, it is characterised in that including following process：To through and squeezing
Water, shaving wet blue leather batching, weigh → rinsing → fill a vacancy → retanning → neutralization → filling, dyeing → stuffing → chromatography；Wherein,
The process of filling a vacancy is in the rotary drum of the wet blue leather by rinsing, adds water and amphoteric ion polymer, is rotated in rotary drum
30-60 minutes, PH is adjusted with sodium formate, it is 4.0-4.2 to control PH.
2. the leather wet finishing technique according to claim 1 for improving leather potential difference problem, it is characterised in that：It is described to fill out
Empty process is that 35 DEG C of the water of wet blue leather weight 100%-120% is added in the rotary drum of the wet blue leather by rinsing, is then added
The amphoteric ion polymer of wet blue leather weight 3-5%, rotates 30-60 minutes in rotary drum, and rotary drum rotating speed is 7-10 revs/min, is used
Sodium formate adjusts PH, and it is 4.0-4.2 to control PH.
3. the leather wet finishing technique according to claim 1 or 2 for improving leather potential difference problem, it is characterised in that：Institute
State in process of filling a vacancy when adding amphoteric ion polymer, be additionally added anionic polycarboxylates.
4. the leather wet finishing technique according to claim 3 for improving leather potential difference problem, it is characterised in that：It is described to fill out
In empty process when adding amphoteric ion polymer, the anionic polycarboxylates of wet blue leather weight 1-2% are additionally added.
5. the leather wet finishing technique according to claim 1 or 2 for improving leather potential difference problem, it is characterised in that：Institute
It is for hybrid charge-N to state the amphoteric ion polymer in process of filling a vacancy+(R)3With-COO-Or-SO3 -Compound, institute
State amphoteric ion polymer and be at least both sexes acrylate copolymer, the both sexes condensation product of aromatic sulphonic acid, the condensation of melamine amine-aldehyde
Amphoteric resin, feature both sexes biopolymer, one kind in albumen and modified protein.
6. the leather wet finishing technique according to claim 5 for improving leather potential difference problem, it is characterised in that：Described two
Property ionomer is added several times, and order of addition is according to the big minispread of amphoteric ion polymer molecular weight, molecular weight
Big amphoteric ion polymer first adds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711056461.0A CN107904335B (en) | 2017-11-01 | 2017-11-01 | Leather wet finishing process for improving poor leather position problem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711056461.0A CN107904335B (en) | 2017-11-01 | 2017-11-01 | Leather wet finishing process for improving poor leather position problem |
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| Publication Number | Publication Date |
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| CN107904335A true CN107904335A (en) | 2018-04-13 |
| CN107904335B CN107904335B (en) | 2020-04-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112981013A (en) * | 2021-02-26 | 2021-06-18 | 沈波 | Leather wet finishing device for improving poor leather position problem |
| CN114875184A (en) * | 2022-06-16 | 2022-08-09 | 兴业皮革科技股份有限公司 | Wet dyeing and finishing process for improving compactness of crust leather |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1165864A (en) * | 1996-03-11 | 1997-11-26 | 罗姆和哈斯公司 | Method of treating leather with amphoteric polymers |
| CN102517409A (en) * | 2011-11-28 | 2012-06-27 | 郑州科信化工有限公司 | Leather retanning method |
| CN105624343A (en) * | 2016-03-29 | 2016-06-01 | 兴业皮革科技股份有限公司 | Production technique for improving tearing strength of nappa shoe upper leather |
-
2017
- 2017-11-01 CN CN201711056461.0A patent/CN107904335B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1165864A (en) * | 1996-03-11 | 1997-11-26 | 罗姆和哈斯公司 | Method of treating leather with amphoteric polymers |
| CN102517409A (en) * | 2011-11-28 | 2012-06-27 | 郑州科信化工有限公司 | Leather retanning method |
| CN105624343A (en) * | 2016-03-29 | 2016-06-01 | 兴业皮革科技股份有限公司 | Production technique for improving tearing strength of nappa shoe upper leather |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112981013A (en) * | 2021-02-26 | 2021-06-18 | 沈波 | Leather wet finishing device for improving poor leather position problem |
| CN112981013B (en) * | 2021-02-26 | 2022-09-02 | 山东省阳信县鸿利皮革制品有限公司 | Leather wet finishing device for improving poor leather position problem |
| CN114875184A (en) * | 2022-06-16 | 2022-08-09 | 兴业皮革科技股份有限公司 | Wet dyeing and finishing process for improving compactness of crust leather |
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| CN107904335B (en) | 2020-04-21 |
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