CN106917120A - A kind of irony slide fastener preparation method with coloring non-ferrous metal - Google Patents
A kind of irony slide fastener preparation method with coloring non-ferrous metal Download PDFInfo
- Publication number
- CN106917120A CN106917120A CN201710123588.3A CN201710123588A CN106917120A CN 106917120 A CN106917120 A CN 106917120A CN 201710123588 A CN201710123588 A CN 201710123588A CN 106917120 A CN106917120 A CN 106917120A
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- Prior art keywords
- slide fastener
- irony slide
- irony
- seconds
- cleaning
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Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/10—Electroplating with more than one layer of the same or of different metals
- C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
- C25D21/16—Regeneration of process solutions
- C25D21/18—Regeneration of process solutions of electrolytes
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/30—Electroplating: Baths therefor from solutions of tin
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
- C25D5/36—Pretreatment of metallic surfaces to be electroplated of iron or steel
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Slide Fasteners (AREA)
Abstract
The present invention relates to art of zipper fabrication, there is provided a kind of irony slide fastener preparation method with coloring non-ferrous metal, comprise the following steps：（1）Teeth to irony slide fastener carry out electrochemical deoiling；（2）Cleaning；（3）Activation；（4）Cleaning；（5）Electroless nickel layer；（6）Cleaning,（7）Plating non-ferrous metal film layer,（8）Cleaning obtains the irony slide fastener finished product with coloring non-ferrous metal.The present invention solves that production cost when existing slide fastener is produced is high, consumptive material is big, production when exhaust emission environment the problems such as.
Description
Technical field
The present invention relates to slide fastener preparation method, more particularly to a kind of irony slide fastener making side with coloring non-ferrous metal
Method.
Background technology
Make rapid progress with clothes, suitcase, footwear industry industry development, have for slide fastener outward appearance and structure and more
Ask, the slide fastener for colouring non-ferrous metal is the one kind in slide fastener, metallic luster, the visual sensory of high-quality with top grade,
It is commonly used for case and bag, sportswear, jeans, children's garment etc..There is easily oxidation in itself due to irony teeth slide fastener material and move dye
Limited etc. technology so that in the market is also little for the application of this kind of slide fastener.Can be discharged when existing slide fastener is coloured simultaneously
A large amount of contaminants environment, and Expenses Cost is higher, and then cause that the production cost of the slide fastener of coloring non-ferrous metal is high, enterprise
Productive profit is low.
The content of the invention
Therefore, for above-mentioned problem, the present invention proposes that one kind makes full use of coloured material, reduces production cost, improves
The irony slide fastener preparation method with coloring non-ferrous metal of enterprise's productive profit and environmental protection.
To solve this technical problem, the present invention takes following scheme：A kind of irony slide fastener system with coloring non-ferrous metal
Make method, comprise the following steps：
（1）Teeth to irony slide fastener carry out electrochemical deoiling, and irony slide fastener is pulled open, and are put into the piece that mass concentration is 10%~20%
Soaked in aqueous slkali, oil removing in -150 seconds in 30 seconds is soaked under 50 DEG C of -90 DEG C of reaction temperatures to remove the greasy dirt in slide fastener teeth；
（2）Cleaning, goes the irony slide fastener for degreasing to clean previous step, will first go the irony slide fastener for degreasing to be positioned over
Soaking and washing -150 seconds 30 seconds in the bucket of clear water are installed, the irony slide fastener for degreasing is further taken out and is blotted, successively repeatedly
Carry out soaking and washing and blot 2-6 times；
（3）Activation, irony slide fastener after previous step is cleaned is the salt acid soak 30 seconds -150 of 10%-20% using mass concentration
Second is activated, and the irony slide fastener after activation is reclaimed with the hydrochloric acid solution that water suction is pumped out on irony slide fastener；
（4）Cleaning, soaking and washing in the bucket for install clear water is positioned over by the irony slide fastener that previous step reclaims supersalt acid solution
- 150 seconds 30 seconds, further take out the irony slide fastener after polishing and blotted, soaking and washing is repeated successively and blots 2-6 times；
（5）Plating, the irony slide fastener after previous step is cleaned is using the nickel sulfate that mass concentration is 20%~30%, 2%~8%
Nickel chloride, 2%~8% BAS, temperature of electroplating solution control at 20 DEG C~60 DEG C, in electroplating bath with irony slide fastener for the moon
Pole, electroplating time -150 seconds 30 seconds electroplates one layer of nickel dam on irony slide fastener coupling element, the water suction pumping of the irony slide fastener after plating
The nickel sulfate that goes out on irony slide fastener, nickel chloride, boric acid mixed solution are reclaimed, then the irony slide fastener after water suction is dipped to it is heavy
Nickel sulfate, nickel chloride, boric acid mixed solution are reclaimed in the bucket of shallow lake again；
（6）Cleaning, by previous step reclaim persulfuric acid nickel, nickel chloride, boric acid mixed solution irony slide fastener be positioned over install it is clear
Soaking and washing -150 seconds 30 seconds in the bucket of water, further take out the irony slide fastener after electroless nickel layer and are blotted, and are repeated successively
Soaking and washing and blot 2-6 times；
（7）Plating non-ferrous metal film layer, the irony slide fastener after previous step is cleaned is the Xi Shui of 5%-10% using mass concentration
Sodium selenate with the burnt potassium mixed solution of 10%-25% or the sodium hydride solution of 5%-15% or the cuprous solution of 3%-8% or 3%-8% is molten
Burnett's solution or 3%-8% nickel chloride solutions or 5%-15% Jiao's potassium solution of liquid or 2%-5%, in temperature of electroplating solution control at 30 DEG C
~60 DEG C, with irony slide fastener as negative electrode in electroplating bath, electroplating time -150 seconds 30 seconds electroplates one layer on irony slide fastener coupling element
Non-ferrous metal film layer, the irony slide fastener after plating is reclaimed with the electroplating solution that water suction is pumped out on irony slide fastener；
（8）Cleaning, soaking and washing in the bucket for install clear water is positioned over by the irony slide fastener that previous step is reclaimed after electroplating solution
- 150 seconds 30 seconds, further take out plating non-ferrous metal film layer after irony slide fastener blotted, be repeated successively soaking and washing and
Blot 2-6 times, then with high pressure water cleaning, then blot, you can obtain the irony slide fastener finished product with coloring non-ferrous metal.
Further, the step（2）、（4）、（6）With（8）In cleaning when can enter in the bucket of soaking and washing respectively
Row ventilation vibrations slide fastener.
Further, the step（5）The power supply of electroplating bath is using the ballast commutation supply voltage of 0-500A.
Further, the step（7）The power supply of electroplating bath is using the ballast commutation supply voltage of 0-200A.
Further, the step（2）、（4）With（6）A water under high pressure can be also again carried out after cleaning and blotting 2-6 times
Cleaning, then blot.
By using preceding solution, the beneficial effects of the invention are as follows：By to irony slide fastener oil removing, activation, electricity
Plating, the cleaning repeatedly that each step is blotted again using soaking and washing during re-plating, effective guarantee oil removing, activation, electroplate
Residue is not had with re-plating each step and mixes next step, while cleaning effect is good and makes full use of water resource not unrestrained
Take, while being recycled with material in activation, plating and the several steps of re-plating, greatly reduces production cost, together
When cause that sewage discharge reaches required standard, environmental protection so that the inventive method have make full use of coloured material, reduce life
Produce cost, improve enterprise's productive profit and the efficient gain of environmental protection, and irony slide fastener can various metals color, using wide
It is general, can wide popularization and application.
Specific embodiment
Now by specific embodiment, the present invention is further described.
The preferred irony slide fastener preparation method with coloring non-ferrous metal of the invention, comprises the following steps：
（1）Teeth to irony slide fastener carry out electrochemical deoiling, and irony slide fastener is pulled open, and are put into the piece alkali soluble that mass concentration is 15%
Soaked in liquid, oil removing in -150 seconds in 30 seconds is soaked under 70 DEG C of reaction temperatures to remove the greasy dirt in slide fastener teeth；
（2）Cleaning, goes the irony slide fastener for degreasing to clean previous step, will first go the irony slide fastener for degreasing to be positioned over
Soaking and washing 90 seconds in the bucket of clear water are installed, the irony slide fastener for degreasing is further taken out and is blotted, leaching is repeated successively
Bubble cleaning and blot 5 times, ventilation vibrations slide fastener is carried out in the bucket of soaking and washing, then with high pressure water cleaning, then blot, strengthen
The cleanliness factor of its cleaning；
（3）Activation, the irony slide fastener after previous step is cleaned is lived for 90 seconds using the salt acid soak that mass concentration is 15%
Change, the irony slide fastener after activation is reclaimed with the hydrochloric acid solution that water suction is pumped out on irony slide fastener；
（4）Cleaning, soaking and washing in the bucket for install clear water is positioned over by the irony slide fastener that previous step reclaims supersalt acid solution
90 seconds, further take out the irony slide fastener after polishing and blotted, ventilation vibrations slide fastener is carried out in the bucket of soaking and washing, then with height
Pressure water cleaning, then blot, strengthen the cleanliness factor of its cleaning；
（5）Plating, irony slide fastener after previous step is cleaned using the nickel sulfate, 5% nickel chloride that mass concentration is 25%,
5% BAS, temperature of electroplating solution is controlled at 50 DEG C, with irony slide fastener as negative electrode in electroplating bath, on irony slide fastener coupling element
One layer of nickel dam of plating, the irony slide fastener water suction after plating is pumped out nickel sulfate on irony slide fastener, nickel chloride, boric acid and mixes molten
Liquid is reclaimed, then the irony slide fastener after water suction is dipped in settling box reclaim again nickel sulfate, nickel chloride, boric acid mixing it is molten
The power supply of liquid, wherein electroplating bath is using the ballast commutation supply voltage of 0-500A；
（6）Cleaning, by previous step reclaim persulfuric acid nickel, nickel chloride, boric acid mixed solution irony slide fastener be positioned over install it is clear
Soaking and washing 90 seconds in the bucket of water, further take out the irony slide fastener after electroless nickel layer and are blotted, and immersion are repeated successively clear
Wash and blot 5 times, ventilation vibrations slide fastener is carried out in the bucket of soaking and washing, then with high pressure water cleaning, then blot, strengthen its clear
The cleanliness factor washed；
（7）Plating non-ferrous metal film layer, the irony slide fastener after previous step is cleaned is the Xi Shui of 5%-10% using mass concentration
With the burnt potassium mixed solution of 10%-25%, controlled at 50 DEG C in temperature of electroplating solution, with irony slide fastener as negative electrode in electroplating bath,
One layer of non-ferrous metal film layer is electroplated on irony slide fastener coupling element, the irony slide fastener water suction after plating is pumped out the electricity on irony slide fastener
Plating liquor is reclaimed, and the power supply of wherein electroplating bath is using the ballast commutation supply voltage of 0-200A；
（8）Cleaning, soaking and washing in the bucket for install clear water is positioned over by the irony slide fastener that previous step is reclaimed after electroplating solution
90 seconds, further take out the irony slide fastener after plating non-ferrous metal film layer and blotted, soaking and washing is repeated successively and 5 are blotted
It is secondary, ventilation vibrations slide fastener is carried out in the bucket of soaking and washing, then with high pressure water cleaning, then blot, strengthen the cleaning of its cleaning
Degree, you can obtain the irony slide fastener finished product with coloring non-ferrous metal.
Step in the present invention（2）、（4）、（6）With（8）In in cleaning can respectively soaking and washing and the number of times that blots with
Be advisable for 2-6 times, though many number of times still have certain cleaning effect waste water resource again for cleaning, time of soaking and washing with 30 seconds-
It is advisable within 150 seconds；Step（1）In piece aqueous slkali mass concentration be preferred with 10%~20%, reaction temperature is advisable with 50 DEG C -90 DEG C,
Soak time was advisable with -150 seconds 30 seconds；Step（3）The solution of activation is preferred with the hydrochloric acid that mass concentration is 10%~20%, polishing
Soak time was advisable with -150 seconds 30 seconds；Step（5）Electroplating solution is with nickel sulfate, 2%~8% that mass concentration is 20%~30%
Nickel chloride, 2%~8% BAS mixing be preferred, reaction temperature is advisable with 20 DEG C -60 DEG C, electroplating time -150 seconds 30 seconds
It is advisable；Step（7）In the burnt potassium mixed solution of Xi Shui with mass concentration as 5%-10% and 10%-25% be preferred silver-plated white metal
Film layer, with the selenic acid sodium solution or the zinc oxide of 2%-5% of the cuprous solution or 3%-8% of the sodium hydride solution of 5%-15% or 3%-8%
Solution is preferred deaurate metallic diaphragm, is preferred plating rifle non-ferrous metal film layer with 3%-8% nickel chloride solutions or 5%-15% Jiao's potassium solutions, instead
Temperature is answered to be advisable with 30 DEG C -60 DEG C, electroplating time is advisable to soak -150 seconds 30 seconds.
By to irony slide fastener, each step uses soaking and washing to the present invention during oil removing, activation, plating, re-plating
The cleaning repeatedly blotted again, effective guarantee oil removing, activation, plating and re-plating each step do not have residue mix it is next
Step, while cleaning effect is good and makes full use of water resource not waste, while in activation, plating and the several steps of re-plating
Recycled with material, greatly reduced production cost, while so that sewage discharge reaches required standard, environmental protection makes
The inventive method has and makes full use of coloured material, reduce production cost, improve enterprise's productive profit and environmental protection is efficient
Gain, and irony slide fastener can various metals color, it is widely used, can wide popularization and application.
Although specifically showing and describing the present invention with reference to preferred embodiment, those skilled in the art should be bright
In vain, do not departing from the spirit and scope of the present invention that appended claims are limited, in the form and details can be right
The present invention makes a variety of changes, and is protection scope of the present invention.
Claims (5)
1. a kind of with the irony slide fastener preparation method for colouring non-ferrous metal, it is characterised in that：Comprise the following steps：
（1）Teeth to irony slide fastener carry out electrochemical deoiling, and irony slide fastener is pulled open, and are put into the piece that mass concentration is 10%~20%
Soaked in aqueous slkali, oil removing in -150 seconds in 30 seconds is soaked under 50 DEG C of -90 DEG C of reaction temperatures to remove the greasy dirt in slide fastener teeth；
（2）Cleaning, goes the irony slide fastener for degreasing to clean previous step, will first go the irony slide fastener for degreasing to be positioned over
Soaking and washing -150 seconds 30 seconds in the bucket of clear water are installed, the irony slide fastener for degreasing is further taken out and is blotted, successively repeatedly
Carry out soaking and washing and blot 2-6 times；
（3）Activation, irony slide fastener after previous step is cleaned is the salt acid soak 30 seconds -150 of 10%-20% using mass concentration
Second is activated, and the irony slide fastener after activation is reclaimed with the hydrochloric acid solution that water suction is pumped out on irony slide fastener；
（4）Cleaning, soaking and washing in the bucket for install clear water is positioned over by the irony slide fastener that previous step reclaims supersalt acid solution
- 150 seconds 30 seconds, further take out the irony slide fastener after polishing and blotted, soaking and washing is repeated successively and blots 2-6 times；
（5）Plating, the irony slide fastener after previous step is cleaned is using the nickel sulfate that mass concentration is 20%~30%, 2%~8%
Nickel chloride, 2%~8% BAS, temperature of electroplating solution control at 20 DEG C~60 DEG C, in electroplating bath with irony slide fastener for the moon
Pole, electroplating time -150 seconds 30 seconds electroplates one layer of nickel dam on irony slide fastener coupling element, the water suction pumping of the irony slide fastener after plating
The nickel sulfate that goes out on irony slide fastener, nickel chloride, boric acid mixed solution are reclaimed, then the irony slide fastener after water suction is dipped to it is heavy
Nickel sulfate, nickel chloride, boric acid mixed solution are reclaimed in the bucket of shallow lake again；
（6）Cleaning, by previous step reclaim persulfuric acid nickel, nickel chloride, boric acid mixed solution irony slide fastener be positioned over install it is clear
Soaking and washing -150 seconds 30 seconds in the bucket of water, further take out the irony slide fastener after electroless nickel layer and are blotted, and are repeated successively
Soaking and washing and blot 2-6 times；
（7）Plating non-ferrous metal film layer, the irony slide fastener after previous step is cleaned is the Xi Shui of 5%-10% using mass concentration
Sodium selenate with the burnt potassium mixed solution of 10%-25% or the sodium hydride solution of 5%-15% or the cuprous solution of 3%-8% or 3%-8% is molten
Burnett's solution or 3%-8% nickel chloride solutions or 5%-15% Jiao's potassium solution of liquid or 2%-5%, in temperature of electroplating solution control at 30 DEG C
~60 DEG C, with irony slide fastener as negative electrode in electroplating bath, electroplating time -150 seconds 30 seconds electroplates one layer on irony slide fastener coupling element
Non-ferrous metal film layer, the irony slide fastener after plating is reclaimed with the electroplating solution that water suction is pumped out on irony slide fastener；
（8）Cleaning, soaking and washing in the bucket for install clear water is positioned over by the irony slide fastener that previous step is reclaimed after electroplating solution
- 150 seconds 30 seconds, further take out plating non-ferrous metal film layer after irony slide fastener blotted, be repeated successively soaking and washing and
Blot 2-6 times, then with high pressure water cleaning, then blot, you can obtain the irony slide fastener finished product with coloring non-ferrous metal.
2. according to claim 1 a kind of with the irony slide fastener preparation method for colouring non-ferrous metal, it is characterised in that：Institute
State step（2）、（4）、（6）With（8）In can carry out in the bucket of soaking and washing ventilation vibrations slide fastener respectively in cleaning.
3. according to claim 1 a kind of with the irony slide fastener preparation method for colouring non-ferrous metal, it is characterised in that：Institute
State step（5）The power supply of electroplating bath is using the ballast commutation supply voltage of 0-500A.
4. according to claim 1 a kind of with the irony slide fastener preparation method for colouring non-ferrous metal, it is characterised in that：Institute
State step（7）The power supply of electroplating bath is using the ballast commutation supply voltage of 0-200A.
5. according to claim 1 a kind of with the irony slide fastener preparation method for colouring non-ferrous metal, it is characterised in that：Institute
State step（2）、（4）With（6）A high pressure water cleaning can be also again carried out after cleaning and blotting 2-6 times, then is blotted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710123588.3A CN106917120A (en) | 2017-03-03 | 2017-03-03 | A kind of irony slide fastener preparation method with coloring non-ferrous metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710123588.3A CN106917120A (en) | 2017-03-03 | 2017-03-03 | A kind of irony slide fastener preparation method with coloring non-ferrous metal |
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| Publication Number | Publication Date |
|---|---|
| CN106917120A true CN106917120A (en) | 2017-07-04 |
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ID=59460293
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710123588.3A Pending CN106917120A (en) | 2017-03-03 | 2017-03-03 | A kind of irony slide fastener preparation method with coloring non-ferrous metal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109497661A (en) * | 2018-11-29 | 2019-03-22 | 颍上谢桥鑫合服饰有限公司 | A kind of manufacture craft of CONCEAL ZIPPER |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1348733A (en) * | 2001-11-19 | 2002-05-15 | 张国华 | Iron zipper making process |
| CN201683161U (en) * | 2010-04-16 | 2010-12-29 | 南昌市汉霖工贸有限公司 | Rose gold zipper head |
| CN201683160U (en) * | 2010-02-12 | 2010-12-29 | 南昌市汉霖工贸有限公司 | Gun-colored metal zipper |
| CN102677117A (en) * | 2012-03-04 | 2012-09-19 | 岳从平 | Working process of metal zipper electroplating machine and device using same |
| CN102953101A (en) * | 2012-11-14 | 2013-03-06 | 施志明 | Chrome plated zinc alloy zipper and electroplating method thereof |
| CN104207422A (en) * | 2014-10-11 | 2014-12-17 | 江苏宏达拉链制造有限公司 | Corrosion-resistant stainless steel zipper |
| CN105063707A (en) * | 2015-09-02 | 2015-11-18 | 福建浔兴拉链科技股份有限公司 | Multi-colored zipper and manufacturing method thereof |
-
2017
- 2017-03-03 CN CN201710123588.3A patent/CN106917120A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1348733A (en) * | 2001-11-19 | 2002-05-15 | 张国华 | Iron zipper making process |
| CN201683160U (en) * | 2010-02-12 | 2010-12-29 | 南昌市汉霖工贸有限公司 | Gun-colored metal zipper |
| CN201683161U (en) * | 2010-04-16 | 2010-12-29 | 南昌市汉霖工贸有限公司 | Rose gold zipper head |
| CN102677117A (en) * | 2012-03-04 | 2012-09-19 | 岳从平 | Working process of metal zipper electroplating machine and device using same |
| CN102953101A (en) * | 2012-11-14 | 2013-03-06 | 施志明 | Chrome plated zinc alloy zipper and electroplating method thereof |
| CN104207422A (en) * | 2014-10-11 | 2014-12-17 | 江苏宏达拉链制造有限公司 | Corrosion-resistant stainless steel zipper |
| CN105063707A (en) * | 2015-09-02 | 2015-11-18 | 福建浔兴拉链科技股份有限公司 | Multi-colored zipper and manufacturing method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109497661A (en) * | 2018-11-29 | 2019-03-22 | 颍上谢桥鑫合服饰有限公司 | A kind of manufacture craft of CONCEAL ZIPPER |
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