CN107524027A - A kind of coating method for solving crust leather dyeing defect - Google Patents
A kind of coating method for solving crust leather dyeing defect Download PDFInfo
- Publication number
- CN107524027A CN107524027A CN201710689642.0A CN201710689642A CN107524027A CN 107524027 A CN107524027 A CN 107524027A CN 201710689642 A CN201710689642 A CN 201710689642A CN 107524027 A CN107524027 A CN 107524027A
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- China
- Prior art keywords
- crust leather
- dyeing defect
- finishing agent
- coating method
- solving
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Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/02—After-treatment
- D06P5/04—After-treatment with organic compounds
- D06P5/08—After-treatment with organic compounds macromolecular
-
- 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
- C14C11/003—Surface finishing of leather using macromolecular compounds
- C14C11/006—Surface finishing of leather using macromolecular compounds using polymeric products of isocyanates (or isothiocyanates) with compounds having active hydrogen
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/02—After-treatment
- D06P5/04—After-treatment with organic compounds
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/20—Physical treatments affecting dyeing, e.g. ultrasonic or electric
- D06P5/2066—Thermic treatments of textile materials
- D06P5/2077—Thermic treatments of textile materials after dyeing
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- 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 tanning chemistry and field of engineering technology, a kind of coating method for solving crust leather dyeing defect is provided, by introducing oxidized polyethylene wax emulsion in finishing agent, natural fog light state is showed coated on crust leather surface, cerate is migrated to film top layer with moisture evaporation during hot iron, the top layer of a wax is formed with other compositions in finishing agent, with good covering effect, obtain the crust leather of surface color uniformity, simultaneous oxidation polythene wax emulsion can increase the degree of scatter of pigment paste in finishing agent, improve tinctorial strength；By the way that the coating method of the solution crust leather dyeing defect can obtain uniform grain color, comfortable feel, surface is fine and smooth and has the crust leather product of aniline finishing effect, and operability is very strong, and production efficiency is high, avoids crust leather from overstocking, and reduces economic loss, practicality height.
Description
Technical field
The present invention relates to tanning chemistry and field of engineering technology, more particularly to a kind of coating method for solving crust leather dyeing defect.
Background technology
Dyeing defect, also known as colour deficient, there is the patch trace being of different shades in leather surface after referring to dyeing, is that crust leather is common
A kind of defect.The origin cause of formation of dyeing defect mainly by it is following some：1st, crust leather state is uneven before dyeing, and collagenous fibres loosening degree differs
Cause, the position of fiber excessively consolidation, dyestuff penetration is poor, and the dyestuff that crust leather surface combines is more, and color will be partially deep；2nd, crust leather
Present site is poor, and after toggling, the area of porous spot can be stretched by amplitude, cause surface color to disperse, shoal, consolidation position
Area extension it is little, surface color change is smaller；3rd, raw material skin has neck line, fertile line in itself, if at the immersion of preceding process, liming
It is improper to manage, and light and dark zebra stripes dyeing defect can be caused after dyeing；4th, the crust leather after dyeing is being stored, in transportation, by
The dyeing defect as caused by grease, salt, dyestuff, mould is formed on grain in the influence of external environment.
If the dyeing defect of crust leather can not be fully solved, the quality and grade of finished leather can be substantially reduced.At present, traditional covering with paint side
Method using brushing and the painting method that is combined of spraying solves crust leather dyeing defect, brush and tradition covering with paint agent prescription that spraying uses for
Water, compound resin, aliphatic polyurethane resin, polyacrylate type resin, protide binder, pigment paste, bleeding agent.It is foregoing
The mode that traditional coating method is coated repeatedly by using the finishing agent containing substantial amounts of resin, pigment paste carries out the screening flaw
Remediation, although can solve the problem that crust leather dyeing defect problem, resin, pigment paste ratio are big in covering with paint agent prescription, coat number
It is more, do not only result in that coating is thick and heavy, mask the natural graining of crust leather, reduce crust leather feel, class, and complex operation, increase
Extra cost, the shortcomings of Coating technology formula, operating process is very complicated be present, be not suitable for quantitatively production and application, it is practical
Property is low.
The content of the invention
Therefore, for it is above-mentioned the problem of, the present invention propose it is a kind of solve crust leather dyeing defect coating method, can not only be effective
Solve the problems, such as crust leather dyeing defect, obtain the crust leather of surface color uniformity, and using the covering with paint of the solution crust leather dyeing defect
Crust leather grain comfortable feel, surface after method processing are fine and smooth and have aniline finishing effect；The painting for solving crust leather dyeing defect
Decorations method operability is very strong, and production efficiency is high, avoids crust leather from overstocking, and reduces economic loss, and practicality is high.
To realize above-mentioned technical problem, the solution that the present invention takes is：A kind of coating method for solving crust leather dyeing defect,
Characterized in that, in turn include the following steps：
Step (1) takes dyeing defect crust leather, and finishing agent is prepared according to the colour atla color of dyeing defect crust leather；
Step (2) finishing agent is prepared：Finishing agent includes component：Water, oxidized polyethylene wax emulsion, glycerine, fragrant adoption
Urethane resin, pigment paste；It is first that oxidized polyethylene wax emulsion, pigment paste is soluble in water during preparation, it is well mixed, then adds
Remaining component, the finishing agent is obtained after well mixed；
Step (3) sprays：Step (2) is prepared in dyeing defect crust leather surface spraying 2-4 by obtained finishing agent by flush coater
It is secondary；
Step (4) presses：Dyeing defect crust leather by step (3) processing is subjected to flatiron processing using through-feed ironing machine,
Ironing temperature is 130-135 DEG C/25-30kg；
Step (5) sprays again：Step (2) is prepared in dyeing defect crust leather surface spraying by obtained finishing agent by flush coater
2-4 times；
Step (6) presses again：Dyeing defect crust leather by step (5) processing is carried out at flatiron using through-feed ironing machine
Reason, ironing temperature is 130-135 DEG C/25-30kg.
Step (7) repeats spraying, flatiron：Situation, repeat step (5) and step (6) 0-3 times are improved according to dyeing defect crust leather.
It is further that the parts by weight of finishing agent component are as follows in the step (2)：Water 300-350 parts, oxidic polyethylene
Wax emulsion 80-100 parts, glycerine 30-40 parts, aromatic polyurethane resins 30-40 parts, pigment paste 25-30 parts.
It is further that oxidized polyethylene wax emulsion used is between 3000- by number-average molecular weight in the step (2)
Again through obtained by emulsifier, containing-OH ,-COOH active group after 4000 Tissuemat E oxidation.
It is further that glycerine used is water-soluble synthetic glycerine in the step (2), active ingredient 65-70%.
It is further that aromatic urethane used is at least aromatic urethane emulsion, aromatic series in the step (2)
One kind in polyurethane dispersing liquid, the aromatic urethane aqueous solution, solid content 15-20%.
By using preceding solution, the beneficial effects of the invention are as follows：The coating method for solving crust leather dyeing defect is adopted
Contain oxidized polyethylene wax emulsion in finishing agent, by its excellent levelability, as the carrier of pigment paste, to strengthen face
Expect the degree of scatter of cream, avoid its precipitation of reuniting, coating is uniform, and covering effect is good；But oxidized polyethylene wax emulsion draws
Membership makes coating stiff, easy embrittlement, therefore adds glycerine and keep coating soft as plasticizer, is not easy embrittlement, and glycerine
Can be miscible with water arbitrary proportion；Meanwhile be enhancing coatings and the binding strength of crust leather, fragrant adoption ammonia is added in finishing agent
Ester resin, it is made up of aromatic polyisocyanate and polyol reaction, and reactivity is high, and tackness is good, admittedly contain
Measure low, film forming is thin, does not interfere with the natural feel of crust leather；Meanwhile after finishing agent is coated on crust leather surface, adopted in iron process
With 130-135 DEG C of flatiron of high temperature, effectively OPE is completely melt, partial penetration to crust leather deep layer, part
The top layer that wax is formed to film top layer is migrated with moisture evaporation, assigns the good gloss of crust leather and comfortable feel；If flatiron
Temperature is less than 130 DEG C, and OPE fails to be completely melt, still has part to remain in crust leather surface, mist light state can be presented,
The glossiness and feel of crust leather do not reach requirement；If ironing temperature is higher than 135 DEG C, leather body can become stiff, richness, softness
Degree is greatly lowered；Therefore, comprehensive preceding described, the component of finishing agent, is water used in the coating method for solving crust leather dyeing defect
Molten type, avoids the use of organic solvent, and finishing agent has the advantages that environmentally friendly, cost-effective, has good prospect, moreover,
By the coating method of the solution crust leather dyeing defect, uniform grain color, comfortable feel can be obtained, surface is fine and smooth and has aniline
The crust leather product of coating effect, and operability is very strong, and production efficiency is high, avoids crust leather from overstocking, and reduces economic loss, practical
Property it is high.
Brief description of the drawings
Fig. 1 is the schematic diagram of pending light brown dyeing defect crust leather.
Fig. 2 is the schematic diagram using the light brown dyeing defect crust leather after processing of the embodiment of the present invention.
Embodiment
Embodiments of the present invention are described in detail below with reference to specific embodiment, and how skill is applied to the present invention whereby
Art means solve technical problem, and the implementation process for reaching technique effect can fully understand and implement according to this.If do not refer in particular to
Conventional meanses 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, used
The source of reagent, trade name and it is necessary to list its constituent person, indicates on the first appearance.
Title, model and its manufacturer of chemical reagent used in the embodiment of table 1
| Title | Model | Manufacturer |
| Oxidized polyethylene wax emulsion | SFT BFG | ALPA |
| Plasticizer | SFT HG | ALPA |
| Aromatic polyurethane resins | 1360 | LAMBERTI |
| Coffee-like pigment paste | DOWESION COFFEE H62652 | DOWELL |
| Orange pigment cream | DOWESION ORANGE H62553 | DOWELL |
| Hunchbacked yellow uitramarine cream | DOWESION CAMEL N62232 | DOWELL |
A kind of coating method for solving crust leather dyeing defect, in turn includes the following steps：
Step (1) takes light brown dyeing defect crust leather, and dyeing defect area accounts for 65% (as shown in Figure 1), according to required processing crust leather
Colour atla color prepares the finishing agent；
Step (2) finishing agent is prepared：90 parts of water, 100 parts of oxidized polyethylene wax emulsions are accurately weighed first, are well mixed；
Secondly 18 parts of coffee-like pigment pastes are added, 7 parts of hunchbacked yellow uitramarine cream, 5 parts of orange pigment cream, is well mixed, adds remaining 210
Part water；40 parts of aromatic polyurethane resins are added again, are well mixed；40 parts of glycerine are eventually adding, are well mixed；
Step (3) sprays：2 sprayings are carried out to dyeing defect crust leather using the finishing agent prepared by flush coater, flush coater
Spray gun lattice number is adjusted to 6 lattice, and spraying pump pressure is adjusted to 1.4bar, and oven drying temperature is 85 DEG C, coated weight 8.0g/sf；
Step (4) presses：Crust leather after spraying is subjected to flatiron processing, ironing temperature 130 using through-feed ironing machine
℃/30kg；
Step (5) sprays again：2 sprayings, spraying are carried out to dyeing defect crust leather using the finishing agent prepared by flush coater
The spray gun lattice number of machine is adjusted to 6 lattice, and spraying pump pressure is adjusted to 1.2bar, and oven drying temperature is 85 DEG C, coated weight 6.0g/sf；
Step (6) presses again：The crust leather after spraying again is carried out into flatiron again using through-feed ironing machine to handle, pressed
It is 130 DEG C/30kg to scald temperature；Crust leather (as shown in Figure 2) after being handled.
The crust leather of the coating method processing for solving crust leather dyeing defect, technical recipe is simple, operating process is brief, according to attached
Figure Fig. 1 (dyeing defect crust leather original state), Fig. 2 (state of the dyeing defect crust leather after the inventive method is handled) contrast are visible, warp
The crust leather crossed after the coating method processing of the solution crust leather dyeing defect, color is uniform, grain is fine and smooth, comfortable feel, pore are clear
Nature, kishke feel are strong.
Described in above, only this wound is used using the embodiment of this origination techniques content, any those skilled in the art
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 (5)
1. a kind of coating method for solving crust leather dyeing defect, it is characterised in that in turn include the following steps：
Step（1）Dyeing defect crust leather is taken, finishing agent is prepared according to the colour atla color of dyeing defect crust leather；
Step（2）Finishing agent is prepared：Finishing agent includes component：Water, oxidized polyethylene wax emulsion, glycerine, aromatic urethane
Resin, pigment paste；It is first that oxidized polyethylene wax emulsion, pigment paste is soluble in water during preparation, it is well mixed, then adds remaining
Component, the finishing agent is obtained after well mixed；
Step（3）Spraying：By flush coater by step（2）Obtained finishing agent is prepared in dyeing defect crust leather surface spraying 2-4 times；
Step（4）Flatiron：Step will be passed through（3）The dyeing defect crust leather of processing carries out flatiron processing using through-feed ironing machine, flatiron
Temperature is 130-135 DEG C/25-30kg；
Step（5）Spray again：By flush coater by step（2）Obtained finishing agent is prepared in dyeing defect crust leather surface spraying 2-4
It is secondary；
Step（6）Press again：Step will be passed through（5）The dyeing defect crust leather of processing carries out flatiron processing using through-feed ironing machine,
Ironing temperature is 130-135 DEG C/25-30kg；
Step（7）Repeat spraying, flatiron：Situation, repeat step are improved according to dyeing defect crust leather（5）And step（6）0-3 times.
2. the coating method according to claim 1 for solving crust leather dyeing defect, it is characterised in that the step（2）Middle covering with paint
The parts by weight of agent component are as follows：Water 300-350 parts, oxidized polyethylene wax emulsion 80-100 parts, glycerine 30-40 parts, aromatic series
Polyurethane resin 30-40 parts, pigment paste 25-30 parts.
3. the coating method according to claim 1 or 2 for solving crust leather dyeing defect, it is characterised in that：The step（2）Middle institute
With oxidized polyethylene wax emulsion be by number-average molecular weight between 3000-4000 Tissuemat E oxidation after again through emulsifier institute
, contain-OH ,-COOH active group.
4. the coating method according to claim 1 or 2 for solving crust leather dyeing defect, it is characterised in that：The step（2）Middle institute
It is water-soluble synthetic glycerine with glycerine, active ingredient 65-70%.
5. the coating method according to claim 1 or 2 for solving crust leather dyeing defect, it is characterised in that：The step（2）Middle institute
It is at least with aromatic urethane in aromatic urethane emulsion, aromatic urethane dispersion liquid, the aromatic urethane aqueous solution
One kind, solid content 15-20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710689642.0A CN107524027B (en) | 2017-08-14 | 2017-08-14 | Coating method for solving crust leather color pattern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710689642.0A CN107524027B (en) | 2017-08-14 | 2017-08-14 | Coating method for solving crust leather color pattern |
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| Publication Number | Publication Date |
|---|---|
| CN107524027A true CN107524027A (en) | 2017-12-29 |
| CN107524027B CN107524027B (en) | 2020-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710689642.0A Active CN107524027B (en) | 2017-08-14 | 2017-08-14 | Coating method for solving crust leather color pattern |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114214469A (en) * | 2021-12-13 | 2022-03-22 | 焦作隆丰皮草企业有限公司 | Natural grain-throwing coating process for high-grade Napa elastic leather |
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| CN1611560A (en) * | 2003-10-31 | 2005-05-04 | 中国石油化工股份有限公司 | Wax-containing composition for leather and its product surface coating |
| CN101503517A (en) * | 2009-03-09 | 2009-08-12 | 陕西科技大学 | Preparation of cationic-nonionic modified oxidated polyethylene wax emulsion |
| CN104530365A (en) * | 2014-12-03 | 2015-04-22 | 武汉鑫睿福科技有限公司 | Waterborne polyurethane used for leather surface treatment and preparation method thereof |
| CN105779670A (en) * | 2016-04-29 | 2016-07-20 | 四川力久知识产权服务有限公司 | Wax emulsion for leather finishing and preparing method of wax emulsion |
| CN106398361A (en) * | 2016-09-05 | 2017-02-15 | 四川力久云智知识产权运营有限公司 | Cation wax emulsion for leather finishing and preparation method of cation wax emulsion |
-
2017
- 2017-08-14 CN CN201710689642.0A patent/CN107524027B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1611560A (en) * | 2003-10-31 | 2005-05-04 | 中国石油化工股份有限公司 | Wax-containing composition for leather and its product surface coating |
| CN101503517A (en) * | 2009-03-09 | 2009-08-12 | 陕西科技大学 | Preparation of cationic-nonionic modified oxidated polyethylene wax emulsion |
| CN104530365A (en) * | 2014-12-03 | 2015-04-22 | 武汉鑫睿福科技有限公司 | Waterborne polyurethane used for leather surface treatment and preparation method thereof |
| CN105779670A (en) * | 2016-04-29 | 2016-07-20 | 四川力久知识产权服务有限公司 | Wax emulsion for leather finishing and preparing method of wax emulsion |
| CN106398361A (en) * | 2016-09-05 | 2017-02-15 | 四川力久云智知识产权运营有限公司 | Cation wax emulsion for leather finishing and preparation method of cation wax emulsion |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114214469A (en) * | 2021-12-13 | 2022-03-22 | 焦作隆丰皮草企业有限公司 | Natural grain-throwing coating process for high-grade Napa elastic leather |
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| CN107524027B (en) | 2020-01-10 |
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