CN107904025B - Process for improving defective products of mobile phone side key assembly - Google Patents
Process for improving defective products of mobile phone side key assembly Download PDFInfo
- Publication number
- CN107904025B CN107904025B CN201711164442.XA CN201711164442A CN107904025B CN 107904025 B CN107904025 B CN 107904025B CN 201711164442 A CN201711164442 A CN 201711164442A CN 107904025 B CN107904025 B CN 107904025B
- Authority
- CN
- China
- Prior art keywords
- parts
- side key
- cleaning
- glue
- drying
- 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.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/37—Mixtures of compounds all of which are anionic
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/06—Phosphates, including polyphosphates
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2075—Carboxylic acids-salts thereof
- C11D3/2079—Monocarboxylic acids-salts thereof
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2075—Carboxylic acids-salts thereof
- C11D3/2086—Hydroxy carboxylic acids-salts thereof
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2093—Esters; Carbonates
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/26—Organic compounds containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
- C11D1/14—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
- C11D1/146—Sulfuric acid esters
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Inorganic Chemistry (AREA)
- Detergent Compositions (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
A process for improving the defective products of the side key assembly of a mobile phone comprises the following steps: (1) and (3) checking: inspecting the assembled finished product, and disassembling the side key with the glue adhered on the surface; (2) softening glue: soaking the side key with the glue adhered on the surface in softening treatment liquid; (3) and ultrasonic cleaning: placing the softened side key in an ultrasonic instrument provided with cleaning liquid for cleaning; (4) drying: drying the side key subjected to ultrasonic cleaning; the softening treatment liquid comprises the following raw materials in parts by weight: 16-23 parts of diethanolamine, 9-16 parts of sodium sulfate, 8-16 parts of alkylphenol polyoxyethylene, 15-26 parts of sodium dodecyl sulfate, 10-16 parts of sodium dodecyl benzene sulfonate, 8-12 parts of ethyl acetoacetate, 5-8 parts of citric acid, 1-2 parts of hydroxypropyl cellulose and 20-30 parts of deionized water.
Description
Technical Field
The invention belongs to the field of electronic equipment processing, and particularly relates to a process for improving defective products of mobile phone side key assembly.
Background
The cell-phone side key is as an important spare part of cell-phone, after production is accomplished, will make final finished product with other cell-phone spare part cooperation equipment, glue need be used during the equipment, cell-phone side key volume form itself is little, in the equipment, glue is easily stained with on the surface of cell-phone side key, glue solidifies easily and is difficult for wasing, cause off-the-shelf yield to descend, produce piling up of a large amount of defective products, extravagant material, generally handle through following flow to the defective products: assembling → inspecting the finished product → disassembling the side key with glue overflow → soaking the treating agent → re-inspecting the single side key → assembling → inspecting the finished product, the treating agent has high cost, easy volatilization, small number of disposable treatments, high cleaning cost and low cleaning efficiency, and needs further improvement.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a process for improving the defective products of the side keys of the mobile phone, which has high cleaning efficiency and low cleaning cost.
The invention adopts the following technical scheme:
a process for improving the defective products of the side key assembly of a mobile phone comprises the following steps:
(1) and (3) checking: inspecting the assembled finished product, and disassembling the side key with the glue adhered on the surface;
(2) softening glue: soaking the side key with the glue adhered on the surface in softening treatment liquid;
(3) and ultrasonic cleaning: placing the softened side key in an ultrasonic instrument provided with cleaning liquid for cleaning;
(4) drying: drying the side key subjected to ultrasonic cleaning;
the softening treatment liquid comprises the following raw materials in parts by weight: 16-23 parts of diethanolamine, 9-16 parts of sodium sulfate, 8-16 parts of alkylphenol polyoxyethylene, 15-26 parts of sodium dodecyl sulfate, 10-16 parts of sodium dodecyl benzene sulfonate, 8-12 parts of ethyl acetoacetate, 5-8 parts of citric acid, 1-2 parts of hydroxypropyl cellulose and 20-30 parts of deionized water.
Further, the cleaning solution comprises the following raw materials in parts by weight: 10-12 parts of lauric acid, 20-28 parts of fatty alcohol sodium sulfate, 13-17 parts of sodium tripolyphosphate, 15-20 parts of acyl sodium sulfonate, 15-25 parts of sodium citrate, 3-5 parts of ethyl acetate, 2-3 parts of ammonium benzoate, 0.5-0.8 part of nitromethane and 22-28 parts of deionized water.
Further, the softening treatment liquid has a mass solubility of 6-10%.
Further, the softening glue comprises: soaking the side bond with the glue on the surface in the softening treatment solution, and treating at 45-60 deg.C for 5-15 min.
Further, the ultrasonic cleaning includes: cleaning the softened side bond in an ultrasonic instrument with cleaning solution, and treating at 30-45 deg.C for 8-12 min.
Further, the drying includes: drying the side bond after super-particle cleaning, and drying for 5-20min at the temperature of 80-120 ℃.
As can be seen from the above description of the present invention, compared with the prior art, the beneficial effects of the present invention are: in the process flow, the mobile phone side key adhered with the glue is detached and placed in the softening treatment liquid, the solidified glue on the surface of the mobile phone side key is softened by the softening treatment liquid, so that the solidified glue falls off from the surface of the mobile phone side key, the softening treatment liquid comprises diethanolamine, sodium sulfate, alkylphenol polyoxyethylene ether, sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, ethyl acetoacetate, citric acid, hydroxypropyl cellulose and deionized water, and the raw materials for the composition have wide sources and low price, so that the cleaning cost is reduced; in the softening treatment solution, alkylphenol ethoxylates, sodium dodecyl sulfate and sodium dodecyl benzene sulfonate are used as surfactants, have emulsification and osmosis effects and good biodegradability, and can effectively soften the glue solidified on the surface of the side key of the mobile phone by being matched with substances such as diethanolamine, sodium sulfate and the like without influencing the properties of the side key of the mobile phone; before drying, the mobile phone side key treated by the softening treatment liquid is placed in an ultrasonic instrument provided with a cleaning liquid for cleaning, the cleaning liquid can effectively remove the residual softening treatment liquid on the mobile phone side key through the mutual matching of raw materials such as lauric acid, fatty alcohol sodium sulfate, sodium tripolyphosphate, sodium acyl sulfonate, sodium citrate, ethyl acetate, ammonium benzoate, nitromethane and the like, a layer of protective film is formed on the surface of the mobile phone side key, and the reject ratio caused by water stain retention is prevented.
Detailed Description
The invention is further described below by means of specific embodiments.
A process for improving the defective products of the side key assembly of a mobile phone comprises the following steps:
(1) and (3) checking: inspecting the assembled finished product, and disassembling the side key with the glue adhered on the surface;
(2) softening glue: soaking the side bond with the glue on the surface in softening treatment liquid, and treating for 5-15min at 45-60 ℃, wherein the mass solubility of the softening treatment liquid is 6-10%, and further the softening treatment liquid comprises the following raw materials in parts by weight: 16-23 parts of diethanolamine, 9-16 parts of sodium sulfate, 8-16 parts of alkylphenol polyoxyethylene, 15-26 parts of sodium dodecyl sulfate, 10-16 parts of sodium dodecyl benzene sulfonate, 8-12 parts of ethyl acetoacetate, 5-8 parts of citric acid, 1-2 parts of hydroxypropyl cellulose and 20-30 parts of deionized water;
(3) and ultrasonic cleaning: cleaning the softened side key in an ultrasonic instrument with cleaning liquid, and treating for 8-12min at the temperature of 30-45 ℃, wherein the cleaning liquid comprises the following raw materials in parts by weight: 10-12 parts of lauric acid, 20-28 parts of fatty alcohol sodium sulfate, 13-17 parts of sodium tripolyphosphate, 15-20 parts of acyl sodium sulfonate, 15-25 parts of sodium citrate, 3-5 parts of ethyl acetate, 2-3 parts of ammonium benzoate, 0.5-0.8 part of nitromethane and 22-28 parts of deionized water;
(4) drying: drying the side bond after super-particle cleaning, and drying for 5-20min at the temperature of 80-120 ℃.
Example 1
A process for improving the defective products of the side key assembly of a mobile phone comprises the following steps:
(1) and (3) checking: inspecting the assembled finished product, and disassembling the side key with the glue adhered on the surface;
(2) softening glue: soaking the side bond with the glue on the surface in softening treatment liquid, and treating for 15min at the temperature of 45 ℃, wherein the mass solubility of the softening treatment liquid is 10%, and further the softening treatment liquid comprises the following raw materials in parts by weight: 23 parts of diethanolamine, 9 parts of sodium sulfate, 16 parts of alkylphenol polyoxyethylene, 15 parts of sodium dodecyl sulfate, 16 parts of sodium dodecyl benzene sulfonate, 8 parts of ethyl acetoacetate, 8 parts of citric acid, 1 part of hydroxypropyl cellulose and 20 parts of deionized water;
(3) and ultrasonic cleaning: cleaning the softened side key in an ultrasonic instrument provided with cleaning liquid, and treating for 8min at the temperature of 45 ℃, wherein the cleaning liquid comprises the following raw materials in parts by weight: 12 parts of lauric acid, 20 parts of fatty alcohol sodium sulfate, 17 parts of sodium tripolyphosphate, 15 parts of acyl sodium sulfonate, 25 parts of sodium citrate, 3 parts of ethyl acetate, 2 parts of ammonium benzoate, 0.8 part of nitromethane and 22 parts of deionized water;
(4) drying: drying the side key after the super-particle cleaning, and drying for 5min at the temperature of 120 ℃;
the product detection reject ratio of the mobile phone side key treated by the process is less than or equal to 1 percent, the original process has high cost of the treating agent, is volatile, can only treat about 600 products at one time, has high cleaning cost and low cleaning efficiency, and compared with the improvement process of the invention, the improvement process can greatly improve the residual glue on the surface of the mobile phone side key due to assembly, and the softening treatment solution has wide raw material composition, low price and low cleaning cost, and can treat about 2000 products at one time, and has high treatment efficiency.
Example 2
A process for improving the defective products of the side key assembly of a mobile phone comprises the following steps:
(1) and (3) checking: inspecting the assembled finished product, and disassembling the side key with the glue adhered on the surface;
(2) softening glue: soaking the side bond with the glue on the surface in softening treatment liquid, and treating for 5min at the temperature of 60 ℃, wherein the mass solubility of the softening treatment liquid is 6%, and further the softening treatment liquid comprises the following raw materials in parts by weight: 16 parts of diethanolamine, 16 parts of sodium sulfate, 8 parts of alkylphenol polyoxyethylene, 26 parts of sodium dodecyl sulfate, 10 parts of sodium dodecyl benzene sulfonate, 12 parts of ethyl acetoacetate, 5 parts of citric acid, 2 parts of hydroxypropyl cellulose and 30 parts of deionized water;
(3) and ultrasonic cleaning: cleaning the softened side key in an ultrasonic instrument with cleaning liquid, and treating for 12min at the temperature of 30 ℃, wherein the cleaning liquid comprises the following raw materials in parts by weight: 10 parts of lauric acid, 28 parts of fatty alcohol sodium sulfate, 13 parts of sodium tripolyphosphate, 20 parts of acyl sodium sulfonate, 15 parts of sodium citrate, 5 parts of ethyl acetate, 3 parts of ammonium benzoate, 0.5 part of nitromethane and 28 parts of deionized water;
(4) drying: drying the side bonds cleaned by the super-magic waves at the temperature of 80 ℃ for 20 min;
the product detection reject ratio of the mobile phone side key treated by the process is less than or equal to 1 percent, the original process has high cost of the treating agent, is volatile, can only treat about 600 products at one time, has high cleaning cost and low cleaning efficiency, and compared with the improvement process of the invention, the improvement process can greatly improve the residual glue on the surface of the mobile phone side key due to assembly, and the softening treatment solution has wide raw material composition, low price and low cleaning cost, and can treat about 2000 products at one time, and has high treatment efficiency.
Example 3
A process for improving the defective products of the side key assembly of a mobile phone comprises the following steps:
(1) and (3) checking: inspecting the assembled finished product, and disassembling the side key with the glue adhered on the surface;
(2) softening glue: soaking the side bond with the glue on the surface in softening treatment liquid, and treating for 9min at 55 ℃, wherein the mass solubility of the softening treatment liquid is 8%, and further the softening treatment liquid comprises the following raw materials in parts by weight: 19 parts of diethanolamine, 12 parts of sodium sulfate, 12 parts of alkylphenol polyoxyethylene, 20 parts of sodium dodecyl sulfonate, 13 parts of sodium dodecyl benzene sulfonate, 10 parts of ethyl acetoacetate, 6 parts of citric acid, 1.5 parts of hydroxypropyl cellulose and 25 parts of deionized water;
(3) and ultrasonic cleaning: cleaning the softened side key in an ultrasonic instrument with cleaning liquid, and treating for 10min at the temperature of 40 ℃, wherein the cleaning liquid comprises the following raw materials in parts by weight: 11 parts of lauric acid, 25 parts of fatty alcohol sodium sulfate, 15 parts of sodium tripolyphosphate, 20 parts of acyl sodium sulfonate, 18 parts of sodium citrate, 4 parts of ethyl acetate, 2.5 parts of ammonium benzoate, 0.6 part of nitromethane and 24 parts of deionized water;
(4) drying: drying the side key after the super-particle cleaning, and drying for 9min at the temperature of 100 ℃;
the product detection reject ratio of the mobile phone side key treated by the process is less than or equal to 1 percent, the original process has high cost of the treating agent, is volatile, can only treat about 600 products at one time, has high cleaning cost and low cleaning efficiency, and compared with the improvement process of the invention, the improvement process can greatly improve the residual glue on the surface of the mobile phone side key due to assembly, and the softening treatment solution has wide raw material composition, low price and low cleaning cost, and can treat about 2000 products at one time, and has high treatment efficiency.
The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents and modifications within the scope of the description.
Claims (5)
1. A technology for improving the defective products of the mobile phone side key assembly is characterized in that: the method comprises the following steps:
(1) and (3) checking: inspecting the assembled finished product, and disassembling the side key with the glue adhered on the surface;
(2) softening glue: soaking the side key with the glue adhered on the surface in softening treatment liquid;
(3) and ultrasonic cleaning: placing the softened side key in an ultrasonic instrument provided with cleaning liquid for cleaning;
(4) drying: drying the side key subjected to ultrasonic cleaning;
the softening treatment liquid comprises the following raw materials in parts by weight: 16-23 parts of diethanolamine, 9-16 parts of sodium sulfate, 8-16 parts of alkylphenol polyoxyethylene, 15-26 parts of sodium dodecyl sulfate, 10-16 parts of sodium dodecyl benzene sulfonate, 8-12 parts of ethyl acetoacetate, 5-8 parts of citric acid, 1-2 parts of hydroxypropyl cellulose and 20-30 parts of deionized water;
the cleaning solution comprises the following raw materials in parts by weight: 10-12 parts of lauric acid, 20-28 parts of fatty alcohol sodium sulfate, 13-17 parts of sodium tripolyphosphate, 15-20 parts of acyl sodium sulfonate, 15-25 parts of sodium citrate, 3-5 parts of ethyl acetate, 2-3 parts of ammonium benzoate, 0.5-0.8 part of nitromethane and 22-28 parts of deionized water.
2. The process of claim 1, wherein the process comprises the steps of: the mass concentration of the softening treatment liquid is 6-10%.
3. The process according to any one of claims 1 or 2, wherein the process comprises the steps of: the softening glue comprises: soaking the side bond with the glue on the surface in the softening treatment solution, and treating at 45-60 deg.C for 5-15 min.
4. The process according to any one of claims 1 or 2, wherein the process comprises the steps of: the ultrasonic cleaning includes: cleaning the softened side bond in an ultrasonic instrument with cleaning solution, and treating at 30-45 deg.C for 8-12 min.
5. The process according to any one of claims 1 or 2, wherein the process comprises the steps of: the drying includes: and drying the side keys cleaned by ultrasonic waves for 5-20min at the temperature of 80-120 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711164442.XA CN107904025B (en) | 2017-11-21 | 2017-11-21 | Process for improving defective products of mobile phone side key assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711164442.XA CN107904025B (en) | 2017-11-21 | 2017-11-21 | Process for improving defective products of mobile phone side key assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107904025A CN107904025A (en) | 2018-04-13 |
| CN107904025B true CN107904025B (en) | 2020-04-07 |
Family
ID=61846893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711164442.XA Active CN107904025B (en) | 2017-11-21 | 2017-11-21 | Process for improving defective products of mobile phone side key assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107904025B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109786151A (en) * | 2019-01-30 | 2019-05-21 | 成都宏明双新科技股份有限公司 | A kind of hot pressing aftertreatment technology of mobile phone volume key |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899365B (en) * | 2009-05-27 | 2012-06-27 | 宁波百仕高联合工业有限公司 | Adhesive remover and preparation method thereof |
-
2017
- 2017-11-21 CN CN201711164442.XA patent/CN107904025B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107904025A (en) | 2018-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101879509B (en) | Liquid crystal screen cleaning method | |
| CN107904025B (en) | Process for improving defective products of mobile phone side key assembly | |
| CN109504157B (en) | Alkaline deinking agent and removal process of printing ink on jig | |
| DE60143987D1 (en) | METHOD FOR TREATING A SEMI-FINISHED WAFER | |
| CN105957800B (en) | A kind of process of surface treatment of substrate | |
| US20140179583A1 (en) | Peeling liquid for a resist | |
| CN106881308A (en) | A kind of cleaning method of plated film lens | |
| CN103170467A (en) | Ingot casting circulation material cleaning and treating method | |
| CN104172347A (en) | Processing method of dark grape juice | |
| CN101875048A (en) | Method for removing impurities on surface of silicon chip | |
| CN103021811A (en) | Wet etching process | |
| CN102586789A (en) | Ultrasonic wave cleaning agent for body of stainless steel electric kettle and production method | |
| CN101982870A (en) | Method for protecting chip in chip thinning process | |
| CN109985856B (en) | Method for cleaning stains on surface of bamboo-woven handicraft | |
| CN102231404A (en) | Technology for cleaning solar monocrystalline wafer | |
| CN105499930A (en) | Refrigerator bottom plate stamping pretreatment method | |
| CN113878684A (en) | Method for destroying waxy layer on surface of wheat straw | |
| CN103021841A (en) | Treatment method for removing SixNy residue | |
| CN104389030A (en) | Raw silk treatment process | |
| JPS6171932A (en) | Machining method of material | |
| TWI608063B (en) | Natural environment-friendly adhesive base material and manufacturing method thereof | |
| CN103834482A (en) | Cleaning solution and cleaning technology using it | |
| CN109920724A (en) | A kind of method of quick removal substrate organic solderability preservatives and oxide | |
| CN109304922B (en) | Film pasting process of backlight source | |
| CN103804513A (en) | Method for extracting pectins from waste citrus peels |
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 |