CN108707707A - A kind of waterproof antistatic stuffing technique for leather processing - Google Patents
A kind of waterproof antistatic stuffing technique for leather processing Download PDFInfo
- Publication number
- CN108707707A CN108707707A CN201810571023.6A CN201810571023A CN108707707A CN 108707707 A CN108707707 A CN 108707707A CN 201810571023 A CN201810571023 A CN 201810571023A CN 108707707 A CN108707707 A CN 108707707A
- Authority
- CN
- China
- Prior art keywords
- rotary drum
- water
- tare weight
- fatting agent
- modified
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- 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
Abstract
The present invention discloses a kind of waterproof antistatic stuffing technique for leather processing, and processing step is:It will be in Bai Pi or blue skin input rotary drums, the water of tare weight 200%-300% is added, controls 45-55 DEG C of temperature in rotary drum, the conductive nano metal-modified carbon nanotube of the polymaleic anhydride modified grease fatting agent and 0.1%-2% of tare weight 6%-8% is added, rotate rotary drum 60-90min, be down to room temperature is sufficient.Two kinds of materials of polymaleic anhydride modified grease fatting agent and conductive nano metal-modified carbon nanotube are innovatively used in this case processing, two kinds of materials are final to realize the synchronous antistatic the two relevance effect of realization leather water-proof in stuffing process with good compatibility effect.
Description
Technical field
The present invention relates to leather manufacture field, in particular to a kind of waterproof antistatic stuffing techniques for leather processing.
Background technology
Leather and fur products is deep always to be liked by consumers in general because it has natural unique aesthetic feeling, possesses a top grade
Leather and fur products not only represent voguish style, even more a kind of symbol of identity.It is directed to the use characteristic of leather at present, it will usually attached
Add some functional designs of leather, such as anti-pollution, antistatic, waterproof, wear-resisting etc..Leather wear in use, due to
Friction will produce electrostatic, and electrostatic not only damages body, but also can adsorb dust, is unfavorable for cleaning, in this by adding anti-static function
To overcome described problem.The antistatic property and water proofing property of usual leather are practical performances, are directed to leather water-proof at present
Conventional design thinking with antistatic property is that waterproof is realized by coating waterproof layer structure, antistatic by using carbon fiber
Either metal net layer structure or the antistatic medicament layer of coating are realized.In short, being directed to leather water-proof and antistatic property at present
Design be all independent from each other design, in addition use coating layer function persistence insufficient, can also influence the feel of leather.
In consideration of it, inventor furthers investigate the above problem, and propose a kind of waterproof for leather processing
Thus antistatic stuffing technique, this case generate.
Invention content
The purpose of the present invention is to provide a kind of waterproof antistatic stuffing technique for leather processing, stuffing is handled same
When synchronize and realize two kinds of relevance effects of leather water-proof and antistatic property, concise in technology is functional to make waterproof antistatic
Leather provides technical guarantee.
In order to achieve the above objectives, solution of the invention is:
A kind of waterproof antistatic stuffing technique for leather processing, processing step are:Bai Pi or blue skin inputs are turned
In drum, the water of tare weight 200%-300% is added, controls 45-55 DEG C of temperature in rotary drum, the poly of tare weight 6%-8% is added
The conductive nano metal-modified carbon nanotube of anhydride modification grease fatting agent and 0.1%-2% rotates rotary drum 60-90min, is down to often
Temperature.
The conductive nano metal-modified carbon nanotube is that nano silver is carbon nano-tube modified or Nanometer Copper modified carbon nanometer
Pipe.
The polymaleic anhydride modified grease fatting agent uses poly anhydride modification camellia oil fatting agent or poly- Malaysia
Anhydride modified castor oil fatting agent.
The waterproof antistatic stuffing technique is that leather carries out after tanning, neutralization and before chrome retanned step.
In the skin input rotary drum by Bai Pi or blue, before the water that tare weight 200%-300% is added, washing behaviour is also carried out
Make:With the washing 2 times of shaving tare weight 200%-300%, 10-15min is washed every time, is drained after washing.
While the addition polymaleic anhydride modified grease fatting agent and conductive nano metal-modified carbon nanotube, also add
Enter the water proof type fatting agent of 1%-2%.
It is described be down to room temperature after, survey bath foam pH value, adjusting control is in pH3.6-4.0.
It is described be down to room temperature after, add formic acid 0.6%-0.8%, survey bath foam pH3.6-4.0 after rotation rotary drum 30-60min, such as
Fruit adds formic acid to adjust less than again.
The conductive nano metal-modified carbon nanotube is that nano silver is carbon nano-tube modified, and the nano silver is carbon nano-tube modified
It is carbon nanotube by after the mixed acid solution oxidation processes of the concentrated sulfuric acid and concentrated nitric acid, a large amount of carboxylic group is contained on surface, then pass through
It after ultrasonic disperse, is mixed with supporting roller bush, finally restores and obtain under ultraviolet light.
The waterproof antistatic stuffing processing step is:Bai Pi or blue skins are put into rotary drum, with shaving tare weight 200%
Washing 2 times, washes 12min, is drained after washing every time;200% water of tare weight is added, controls temperature 45 C in rotary drum, is added
The poly anhydride modification camellia oil fatting agent of tare weight 6.5% and 0.5% nano silver are carbon nano-tube modified, rotate rotary drum
70min is down to room temperature.
The waterproof antistatic stuffing processing step is:By after tanning, neutralization white skin or blue skin input rotary drum in, with cutting
The washing of even tare weight 250% 2 times is washed 10min, is drained after washing every time;250% water of tare weight is added, controls in rotary drum
The polymaleic anhydride modified castor oil fatting agent of tare weight 7.5%, 1.5% water proof type fatting agent and 1.0% is added in temperature 50 C
Nanometer Copper it is carbon nano-tube modified, rotate rotary drum 80min, be down to room temperature;Add formic acid 0.75%, bath is surveyed after rotation rotary drum 50min
Liquid pH 3.8, if less than adding formic acid to adjust again.
After adopting the above scheme, a kind of waterproof antistatic stuffing technique for leather processing of the present invention, relative to existing
The advantageous effect of technology is:It is in place of the main innovation of the present invention, polymaleic anhydride modified oil is innovatively used in processing
Two kinds of materials of fat fatting agent and conductive nano metal-modified carbon nanotube combine, which has good compatibility effect,
It is final to realize the synchronous antistatic the two relevance effect of realization leather water-proof in stuffing process.
Specific implementation mode
This case is described in further detail With reference to embodiment.
This case is related to a kind of waterproof antistatic stuffing technique for leather processing, and processing step is:By Bai Pi or indigo plant
Skin is put into rotary drum, and the water of tare weight 200%-300% is added, and controls 45-55 DEG C of temperature in rotary drum, is added tare weight 6%-8%'s
The conductive nano metal-modified carbon nanotube of polymaleic anhydride modified grease fatting agent and 0.1%-2%, rotation rotary drum 60-
90min, be down to room temperature is sufficient.
The polymaleic anhydride modified grease fatting agent contains multiple carboxyls, contains oligo surfactant structure, surface
Activity is good.Preferably, polymaleic anhydride modified grease fatting agent uses poly anhydride modification camellia oil fatting agent or poly- horse
Carry out anhydride modified castor oil fatting agent.Wherein poly anhydride modification camellia oil fatting agent is referring to Chinese Patent Application No.
A kind of preparation method of poly anhydride modification camellia oil fatting agent of CN201711344152.3.
A kind of waterproof antistatic stuffing technique for leather processing of the present invention can synchronize and realize that leather water-proof is antistatic
The two relevance effect innovatively uses polymaleic anhydride modified grease fatting agent and conductive nano metal-modified carbon to receive in processing
Two kinds of materials of mitron combine, which has good compatibility effect:
1) polymaleic anhydride modified grease fatting agent has very dispersion, the absorption of conductive nano metal-modified carbon nanotube
Good advantageous effect;Polymaleic anhydride modified grease fatting agent contains oligo surfactant structure, good surface activity, a side
Face has peptizaiton to conductive nano metal-modified carbon nanotube;On the other hand a polymaleic anhydride modified grease molecule
In contain multiple carboxyls, carboxyl can be complexed with conductive metal, have affinity interaction with carbon nanotube, further promote carbon
The high dispersion of the dispersion of nanotube, conductive nano metal-modified carbon nanotube can bring splendid antistatic effect;
2) polymaleic anhydride modified grease fatting agent, the fatting agent simultaneously, is used to contain carboxyl, carboxyl energy and chromium when stuffing
Chromium coordination combines in tanning agent, on the one hand, carboxyl encloses the hydrophilic radical in fatting agent with after chrome tanning agent complexing, thus has
Waterproof effect;The conductive metal further encloses the hydrophilic radical of fatting agent, is further promoted anti-with after carboxyl complexing
Water effect;
On the other hand the mechanical strength of leather can be improved;Containing more in one polymaleic anhydride modified grease stuffing agent molecule
A carboxyl so that it can not only carry out multiple spot with leather collagen and be combined, and improve the physical mechanical property of leather;And poly
Anhydride modification grease fatting agent can with chrome tanning agent (leather prepare tanning step or chrome retanned step in use) in chromium, with
And nano metal is complexed, then by the indirectly-acting of chromium or nano metal and carbon nanotube, carbon nanotube is attached to skin
In leather glue original, to greatly improve the physical mechanical property of leather.
The production method of this case waterproof antistatic leather, after the stuffing of innovation, waterproof antistatic processing, by mutual
Correlation brings superior waterproof antistatic function simultaneously, and waterproof antistatic function persistence is good, and processing mode is also not
It can influence the feel of leather.
When using white skin, the chrome tanning agent is in chrome retanned step prepared by leather;When using blue skin, the chromium
Tanning agent is in tanning step and chrome retanned step prepared by leather.This case waterproof antistatic stuffing technique is preferably applied to skin
Leather carries out after tanning, neutralization and before chrome retanned step, the carboxyl of such polymaleic anhydride modified grease fatting agent
With chromium coordination in chrome tanning agent there is front and back multiple spot twice to be combined, plays the work reinforced waterproof effect and promote physical mechanical property
With.
The conductive nano metal-modified carbon nanotube is further defined to tare weight 0.5%-1.0%.Preferably, described to receive
Rice conductive metal is carbon nano-tube modified, wherein conductive metal selection electric conductivity excellent silver, copper, gold etc., corresponds to nano silver
Carbon nano-tube modified, Nanometer Copper is carbon nano-tube modified or decorated by nano-gold carbon nanotube.Wherein nano silver is carbon nano-tube modified
It is carbon nanotube by after the mixed acid solution oxidation processes of the concentrated sulfuric acid and concentrated nitric acid, a large amount of carboxylic group is contained on surface, then pass through
After ultrasonic disperse, with supporting roller bush ([Ag(NH3)2NO3]) mixing, it finally restores and obtains under ultraviolet light.
Preferably, in the skin input rotary drum by Bai Pi or blue, before the water that tare weight 200%-300% is added, also into
Row water washing operations, specially:With the washing 2 times of shaving tare weight 200%-300%, 10-15min is washed every time, after washing
Draining.
Preferably, described that the same of polymaleic anhydride modified grease fatting agent and conductive nano metal-modified carbon nanotube is added
When, the water proof type fatting agent of 1%-2% can also be added.What needs to be explained here is that the addition of the water proof type fatting agent is played
Be:In effective water proofing property that polymaleic anhydride modified grease fatting agent and conductive nano metal-modified carbon nanotube mating band come
On the basis of the water resistance invigoration effect that is carried out, and be not the main cause of its water resistance of leather.
The group of maleic anhydride can almost be closed in this case waterproof antistatic stuffing technique, in this without carrying out formic acid
Processing.Can also formic acid be coordinated to handle certainly, it is described be down to room temperature after, also carry out bath foam pH value test, adjusting control exists in pH
Between 3.6-4.0.In further concrete operations, it is described be down to room temperature after, add formic acid 0.6%-0.8%, rotation rotary drum 30-
Bath foam pH 3.6-4.0 are surveyed after 60min, if less than adding formic acid to adjust again.
Specific embodiment one
A kind of waterproof antistatic stuffing technique for leather processing, processing step are:Bai Pi or blue skin inputs are turned
In drum, with the washing 2 times of shaving tare weight 200%, 12min is washed every time, is drained after washing;200% water of tare weight, control is added
The poly anhydride modification camellia oil fatting agent of tare weight 6.5% and 0.5% nanometer modified by silver is added in temperature 45 C in rotary drum processed
Carbon nanotube rotates rotary drum 70min, is down to room temperature.
Specific embodiment two
A kind of waterproof antistatic stuffing technique for leather processing, processing step are:By the white skin after tanning, neutralization
Or in blue skin input rotary drum, with the washing 2 times of shaving tare weight 300%, 10min is washed every time, is drained after washing;Skin is added
Weigh 300% water, control 55 DEG C of temperature in rotary drum, be added tare weight 7.8% poly anhydride modification camellia oil fatting agent and
0.18% nano silver is carbon nano-tube modified, rotates rotary drum 88min, is down to room temperature;Add formic acid 0.78%, rotation rotary drum 60min
Bath foam pH4.0 is surveyed afterwards, if less than adding formic acid to adjust again.
Specific embodiment three
A kind of waterproof antistatic stuffing technique for leather processing, processing step are:By the white skin after tanning, neutralization
Or in blue skin input rotary drum, with the washing 2 times of shaving tare weight 250%, 10min is washed every time, is drained after washing;Skin is added
250% water is weighed, temperature 50 C in rotary drum, the polymaleic anhydride modified castor oil fatting agent of addition tare weight 7.5%, 1.5% are controlled
Water proof type fatting agent and 1.0% Nanometer Copper it is carbon nano-tube modified, rotate rotary drum 80min, be down to room temperature;Add formic acid
Bath foam pH 3.8 is surveyed after 0.75%, rotation rotary drum 50min, if less than adding formic acid to adjust again.
The foregoing is merely the preferred embodiment of the present invention, all equivalent changes done with scope of the invention as claimed and
Modification, should all belong to the range of the claims in the present invention.
Claims (10)
1. a kind of waterproof antistatic stuffing technique for leather processing, which is characterized in that processing step is:By Bai Pi or blue skins
It puts into rotary drum, the water of tare weight 200%-300% is added, control 45-55 DEG C of temperature in rotary drum, the poly- of tare weight 6%-8% is added
The conductive nano metal-modified carbon nanotube of maleic anhydride modified grease fatting agent and 0.1%-2% rotates rotary drum 60-90min,
Be down to room temperature is sufficient.
2. a kind of waterproof antistatic stuffing technique for leather processing as described in claim 1, which is characterized in that described to receive
Carbon nano-tube modified rice conductive metal is that nano silver is carbon nano-tube modified or Nanometer Copper is carbon nano-tube modified.
3. a kind of waterproof antistatic stuffing technique for leather processing as described in claim 1, which is characterized in that described poly-
Maleic anhydride modified grease fatting agent uses poly anhydride modification camellia oil fatting agent or polymaleic anhydride modified castor oil
Fatting agent.
4. a kind of waterproof antistatic stuffing technique for leather processing as described in claim 1, which is characterized in that described anti-
The antistatic stuffing technique of water is that leather carries out after tanning, neutralization and before chrome retanned step.
5. a kind of waterproof antistatic stuffing technique for leather processing as described in claim 1 or 4, which is characterized in that institute
It states in Bai Pi or blue skin input rotary drums, before the water that tare weight 200%-300% is added, also carries out water washing operations:Use shaving
The washing of tare weight 200%-300% 2 times is washed 10-15min, is drained after washing every time.
6. a kind of waterproof antistatic stuffing technique for leather processing as described in claim 1, which is characterized in that described to add
While entering polymaleic anhydride modified grease fatting agent and conductive nano metal-modified carbon nanotube, it is additionally added the anti-of 1%-2%
Water type fatting agent.
7. a kind of waterproof antistatic stuffing technique for leather processing as described in claim 1, which is characterized in that the drop
To room temperature, adds formic acid 0.6%-0.8%, bath foam pH 3.6-4.0 are surveyed after rotation rotary drum 30-60min, if less than first is added again
Acid is adjusted.
8. a kind of waterproof antistatic stuffing technique for leather processing as described in claim 1, which is characterized in that described to receive
Rice conductive metal is carbon nano-tube modified carbon nano-tube modified for nano silver, and the carbon nano-tube modified nano silver is that carbon nanotube is dense
After the mixed acid solution oxidation processes of sulfuric acid and concentrated nitric acid, a large amount of carboxylic group is contained on surface, then after ultrasonic disperse, with support
Human relations reagent mixes, and finally restores and obtains under ultraviolet light.
9. a kind of waterproof antistatic stuffing technique for leather processing as described in claim 1, which is characterized in that described anti-
The antistatic stuffing processing step of water is:By in Bai Pi or blue skin input rotary drums, with the washing 2 times of shaving tare weight 200%, each water
12min is washed, is drained after washing;200% water of tare weight is added, controls temperature 45 C in rotary drum, the poly- horse of tare weight 6.5% is added
Come anhydride modified camellia oil fatting agent and 0.5% nano silver it is carbon nano-tube modified, rotate rotary drum 70min, be down to room temperature.
10. a kind of waterproof antistatic stuffing technique for leather processing as described in claim 1, which is characterized in that described
Waterproof antistatic stuffing processing step is:By after tanning, neutralization white skin or blue skin input rotary drum in, with shaving tare weight 250%
Washing 2 times, wash 10min every time, drained after washing;250% water of tare weight is added, controls temperature 50 C in rotary drum, adds
Polymaleic anhydride modified castor oil fatting agent, 1.5% water proof type fatting agent and 1.0% Nanometer Copper for entering tare weight 7.5% are repaiied
Carbon nanotube is adornd, rotary drum 80min is rotated, is down to room temperature;Add formic acid 0.75%, surveys bath foam pH 3.8 after rotation rotary drum 50min, such as
Fruit adds formic acid to adjust less than again.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810571023.6A CN108707707B (en) | 2018-06-05 | 2018-06-05 | Waterproof antistatic greasing process for leather treatment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810571023.6A CN108707707B (en) | 2018-06-05 | 2018-06-05 | Waterproof antistatic greasing process for leather treatment |
Publications (2)
Publication Number | Publication Date |
---|---|
CN108707707A true CN108707707A (en) | 2018-10-26 |
CN108707707B CN108707707B (en) | 2020-08-28 |
Family
ID=63870237
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201810571023.6A Active CN108707707B (en) | 2018-06-05 | 2018-06-05 | Waterproof antistatic greasing process for leather treatment |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN108707707B (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101993962A (en) * | 2009-08-27 | 2011-03-30 | 际华三五一五皮革皮鞋有限公司 | Method for manufacturing waterproof soft-surface leather |
CN106191341A (en) * | 2016-07-07 | 2016-12-07 | 嘉兴学院 | A kind of preparation method of the modified Camellia oil fatting agent for leather processing |
CN108018386A (en) * | 2017-12-15 | 2018-05-11 | 嘉兴学院 | A kind of preparation method of poly anhydride modification camellia oil fatting agent |
CN108048605A (en) * | 2017-12-20 | 2018-05-18 | 宁夏金海皮业有限责任公司 | The processing technology of Waterproof Leather |
-
2018
- 2018-06-05 CN CN201810571023.6A patent/CN108707707B/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101993962A (en) * | 2009-08-27 | 2011-03-30 | 际华三五一五皮革皮鞋有限公司 | Method for manufacturing waterproof soft-surface leather |
CN106191341A (en) * | 2016-07-07 | 2016-12-07 | 嘉兴学院 | A kind of preparation method of the modified Camellia oil fatting agent for leather processing |
CN108018386A (en) * | 2017-12-15 | 2018-05-11 | 嘉兴学院 | A kind of preparation method of poly anhydride modification camellia oil fatting agent |
CN108048605A (en) * | 2017-12-20 | 2018-05-18 | 宁夏金海皮业有限责任公司 | The processing technology of Waterproof Leather |
Also Published As
Publication number | Publication date |
---|---|
CN108707707B (en) | 2020-08-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101993962B (en) | Method for manufacturing waterproof soft-surface leather | |
CN102199676B (en) | Sturgeon skin chrome tanning leather production process | |
CN102168153B (en) | Processing method of seawater-proof vamp leather | |
CN102676710A (en) | Method for preparing cleaned three-proofing cow split leather and prepared cleaned three-proofing cow split leather | |
CN108676937A (en) | A kind of formula of leather water-proof anti-static function inorganic agent | |
CN105754470B (en) | The method of the cellulose modified water-borne wood coating of two dimensional oxidation graphene hydridization 1-dimention nano | |
Besser et al. | Hemocyanin facilitates lignocellulose digestion by wood-boring marine crustaceans | |
CN106012547A (en) | Functional wool fabric finishing agent and functional wool fabric finishing method | |
CN105803131A (en) | Tanning method of leather | |
CN101736579A (en) | Method for chemical modification, pigment dyeing and overflow sand washing of fiber | |
CN108707707A (en) | A kind of waterproof antistatic stuffing technique for leather processing | |
CN108504792A (en) | A kind of production method of waterproof antistatic leather | |
Adeel et al. | Environmental friendly pollution free bio-dyeing of wool with haar singhar (Coral Jasmine) flower extract | |
CN106282438B (en) | A kind of preparation method of washable half vegetable tanning sheepskin garment leather | |
KR20040000112A (en) | The processing method of natural leather | |
Zhang et al. | A controllable, universal, and natural supramolecular assembly coating strategy for multifunctionality textiles of antibacterial properties, UV resistance, antioxidant, and secondary reactivity | |
CN104178590B (en) | Contracting line coat of paint working method | |
CN105695642B (en) | A kind of effective reduction waste discharge COD fur tanning method | |
CN107904335A (en) | A kind of leather wet finishing technique for improving leather potential difference problem | |
CN111809004A (en) | Flexing-resistant antibacterial leather and preparation method thereof | |
CN113073157A (en) | Production process of antibacterial leather for automobile steering wheel | |
CN1219593A (en) | Production technique for glove leather | |
Zhang et al. | Determination of peracetic acid by an Ag nanoparticle decorated Cu-organic framework modified electrode | |
CN1087949A (en) | China's improvement lamb skin leather-making technology | |
Liu et al. | Facile fabrication of durable antibacterial and anti-felting wool fabrics with enhanced comfort via novel N-phenylmaleimide finishing |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20230630 Address after: 325000 East Head, 1st Floor, Building 1, No. 52, Fuhao Road, Guoxi Street, Ouhai District, Wenzhou City, Zhejiang Province Patentee after: Wenzhou Ouhai Qiang Weichun Leather Co.,Ltd. Address before: 314001 No. 56 South Yuexiu Road, Zhejiang, Jiaxing Patentee before: JIAXING University |