CN109926385B - Cleaning method of mobile phone glass - Google Patents
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- CN109926385B CN109926385B CN201711371696.9A CN201711371696A CN109926385B CN 109926385 B CN109926385 B CN 109926385B CN 201711371696 A CN201711371696 A CN 201711371696A CN 109926385 B CN109926385 B CN 109926385B
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Abstract
The invention provides a method for cleaning mobile phone glass, which comprises the following steps: a) sequentially carrying out dipping, washing, rinsing, drying and antistatic treatment on glass to be cleaned to obtain cleaned glass; the lotion used in the impregnation process consists of a first lotion and a second lotion; the first lotion comprises the following components in percentage by mass: 10 to 25 percent of sodium dodecyl sulfate; 10 to 15 percent of anhydrous sodium carbonate; 10 to 25 percent of titanium dioxide; the balance of water; the second lotion comprises the following components in percentage by mass: 40 to 50 percent of diethylene glycol monobutyl ether; 5 to 10 percent of quaternary ammonium salt cation fluorocarbon; 5 to 10 percent of polymer sodium salt of 2-naphthalenesulfonic acid and formaldehyde; 20 to 25 percent of propane and butane; the balance being 1,4 dioctyl sulfosuccinate. Compared with the prior art, the cleaning method provided by the invention adopts the specific formula of the cleaning agent and the specific process steps, so that the cleaned mobile phone glass has very high cleanliness, is suitable for AOI detection and has low misjudgment rate.
Description
Technical Field
The invention relates to the technical field of glass cleaning, in particular to a cleaning method of mobile phone glass.
Background
With the advent of the 5G communication era, the demand of the glass cover of the mobile phone is getting larger and larger, and the quantity of the glass cover of the mobile phone is changed from one mobile phone to two mobile phones, so that the production capacity requirement of the manufacturers of the glass cover of the mobile phone is tested seriously. As is known, the inspection is performed after the most processes of the mobile phone glass cover plate in the processing process, and the inspection (such as full inspection, spot inspection and the like) is performed almost once, so that the manpower requirement of the inspection process is the greatest, and the requirement on staff is relatively high.
At present, the appearance of AOI (automatic optical inspection) greatly relieves the problem of insufficient manpower of the inspection process, and the stable inspection rate and continuous output of the production capacity are incomparable with manual inspection. However, the AOI detection has obvious disadvantages that the requirement on cleanliness of mobile phone glass before detection is very high (unlike manual detection, some dirt can be manually wiped, and appearance detection of the mobile phone glass is not affected at all), and the detection yield of the AOI is directly affected by some dirt and even serious dust falling, which also becomes the largest reason that the AOI detection misjudgment rate is high. For the mobile phone glass for AOI detection, the cleaning method in the prior art cannot meet the requirement of cleanliness of the mobile phone glass, so that the technical problem to be solved by the technical staff in the art is to be solved.
Disclosure of Invention
In view of the above, the present invention provides a method for cleaning mobile phone glass, where the cleaned mobile phone glass has very high cleanliness, is suitable for AOI detection, and has a low false rate.
The invention provides a method for cleaning mobile phone glass, which comprises the following steps:
a) sequentially carrying out dipping, washing, rinsing, drying and antistatic treatment on glass to be cleaned to obtain cleaned glass;
the lotion used in the impregnation process consists of a first lotion and a second lotion;
the first lotion comprises the following components in percentage by mass:
10 to 25 percent of sodium dodecyl sulfate;
10 to 15 percent of anhydrous sodium carbonate;
10 to 25 percent of titanium dioxide;
the balance of water;
the second lotion comprises the following components in percentage by mass:
40 to 50 percent of diethylene glycol monobutyl ether;
5 to 10 percent of quaternary ammonium salt cation fluorocarbon;
5 to 10 percent of polymer sodium salt of 2-naphthalenesulfonic acid and formaldehyde;
20 to 25 percent of propane and butane;
the balance being 1,4 dioctyl sulfosuccinate.
Preferably, the impregnation process in step a) is specifically as follows:
sequentially carrying out primary soaking treatment and secondary soaking treatment on the glass to be cleaned to obtain soaked glass;
the steeping liquor used in the first soaking treatment process is an aqueous solution A of a lotion; the mass percent of the first lotion in the lotion aqueous solution A is 0.5-1%, and the mass percent of the second lotion is 3.5-4.5%;
the steeping liquor used in the second soaking treatment process is an aqueous solution B of a lotion; the mass percent of the first lotion in the lotion aqueous solution B is 3-5%, and the mass percent of the second lotion is 0.5-1%.
Preferably, the temperature of the first soaking treatment is 65-75 ℃, and the time is 13-17 min;
the temperature of the second soaking treatment is 55-65 ℃, and the time is 13-17 min.
Preferably, the number of washing in step a) is 1 to 3;
the lotion used in the washing process is a third lotion;
the third lotion comprises the following components in percentage by mass:
15 to 20 percent of anhydrous sodium carbonate;
5 to 8 percent of AE-active ester;
5 to 10 percent of sodium silicate;
the balance of water.
Preferably, the washing process specifically comprises:
sequentially carrying out first ultrasonic treatment and second ultrasonic treatment on the dipped glass, and carrying out spray rinsing to obtain washed glass;
the washing liquid used in the first ultrasonic treatment process is an aqueous solution A of a third washing agent; the mass percentage of the third lotion in the water solution A of the third lotion is 4-6%;
the washing liquid used in the second ultrasonic treatment process is an aqueous solution B of a third washing agent; the mass percentage of the third lotion in the water solution B of the third lotion is 2-4%.
Preferably, the temperature of the first ultrasonic treatment is 60-70 ℃, the time is 110-130 s, and the ultrasonic current value is 2.5-3.5A;
the temperature of the second ultrasonic treatment is 60-70 ℃, the time is 110-130 s, and the ultrasonic current value is 2.5-3.5A;
the time for spraying and washing is 50-70 s.
Preferably, the rinsing process in step a) comprises several ultrasonic rinses; the temperature of each ultrasonic rinsing is 60-70 ℃, the time is 110-130 s, and the ultrasonic current value is 2-3A;
the lotion used in the rinsing process is pure water with the resistivity of more than 13M omega cm;
the total water inflow of the rinsing is 2L/min-4L/min.
Preferably, after each ultrasonic rinsing, the method further comprises:
carrying out spray washing on the glass subjected to ultrasonic wave washing to obtain the washed glass; the time for spraying and washing is 50-70 s.
Preferably, the drying process in step a) is specifically as follows:
carrying out slow-drawing dehydration and hot air drying on the rinsed glass in sequence to obtain dried glass;
the temperature of the slow-drawing dehydration is 70-80 ℃, the time is 10-20 s, and the total water inflow is 3-5L/min;
the temperature for drying by hot air is 90-110 ℃ and the time is 60-80 s.
Preferably, the antistatic treatment time in step a) is 25 to 35 seconds.
The invention provides a method for cleaning mobile phone glass, which comprises the following steps: a) sequentially carrying out dipping, washing, rinsing, drying and antistatic treatment on glass to be cleaned to obtain cleaned glass; the lotion used in the impregnation process consists of a first lotion and a second lotion; the first lotion comprises the following components in percentage by mass: 10 to 25 percent of sodium dodecyl sulfate; 10 to 15 percent of anhydrous sodium carbonate; 10 to 25 percent of titanium dioxide; the balance of water; the second lotion comprises the following components in percentage by mass: 40 to 50 percent of diethylene glycol monobutyl ether; 5 to 10 percent of quaternary ammonium salt cation fluorocarbon; 5 to 10 percent of polymer sodium salt of 2-naphthalenesulfonic acid and formaldehyde; 20 to 25 percent of propane and butane; the balance being 1,4 dioctyl sulfosuccinate. Compared with the prior art, the cleaning method provided by the invention adopts the specific formula of the cleaning agent and the specific process steps, so that the cleaned mobile phone glass has very high cleanliness, is suitable for AOI detection and has low misjudgment rate. Experimental results show that when the mobile phone glass obtained by the cleaning method is used for AOI detection, the misjudgment rate caused by bad dirt can be reduced to below 10%, and the accuracy of AOI detection is greatly improved.
In addition, the cleaning method provided by the invention does not damage silk-screen printing ink, does not increase scratches of the mobile phone glass, is suitable for large-scale application, and is beneficial to promoting the smooth introduction of the AOI in the inspection process of the mobile phone glass cover plate (especially the front cover) in the processing process.
Drawings
FIG. 1 is a schematic diagram of a mobile phone glass to be cleaned according to embodiment 1 of the present invention, in which the AOI detection result is Rework;
fig. 2 is a schematic diagram of the mobile phone glass to be cleaned according to embodiment 2 of the present invention, in which the AOI detection result is NG.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a method for cleaning mobile phone glass, which comprises the following steps:
a) sequentially carrying out dipping, washing, rinsing, drying and antistatic treatment on glass to be cleaned to obtain cleaned glass;
the lotion used in the impregnation process consists of a first lotion and a second lotion;
the first lotion comprises the following components in percentage by mass:
10 to 25 percent of sodium dodecyl sulfate;
10 to 15 percent of anhydrous sodium carbonate;
10 to 25 percent of titanium dioxide;
the balance of water;
the second lotion comprises the following components in percentage by mass:
40 to 50 percent of diethylene glycol monobutyl ether;
5 to 10 percent of quaternary ammonium salt cation fluorocarbon;
5 to 10 percent of polymer sodium salt of 2-naphthalenesulfonic acid and formaldehyde;
20 to 25 percent of propane and butane;
the balance being 1,4 dioctyl sulfosuccinate.
The method comprises the steps of sequentially carrying out dipping, washing, rinsing, drying and antistatic treatment on the glass to be cleaned to obtain the cleaned glass. The method comprises the steps of firstly dipping the glass to be cleaned to obtain the dipped glass. In the present invention, the lotion used in the impregnation process is composed of a first lotion and a second lotion. In the invention, the first lotion comprises the following components in percentage by mass:
10 to 25 percent of sodium dodecyl sulfate;
10 to 15 percent of anhydrous sodium carbonate;
10 to 25 percent of titanium dioxide;
the balance of water;
preferably:
15 to 20 percent of sodium dodecyl sulfate;
12 to 13 percent of anhydrous sodium carbonate;
15% -20% of titanium dioxide;
the balance of water. In the invention, the sodium dodecyl sulfate (CAS NO.25155-30-0) is an anionic surfactant, the anhydrous sodium carbonate (CAS NO.497-19-8) is an inorganic base, the titanium dioxide (CAS NO.13463-67-7) is an oxide, and the water (CAS NO.7732-18-5) is distilled water; the sources of the sodium dodecylsulfate, the anhydrous sodium carbonate and the titanium dioxide are not particularly limited in the present invention, and commercially available products well known to those skilled in the art may be used. The preparation method of the first lotion is not particularly limited, and the technical scheme of mixing and dissolving the components with the content is well known to those skilled in the art.
In the invention, the second lotion comprises the following components in percentage by mass:
40 to 50 percent of diethylene glycol monobutyl ether;
5 to 10 percent of quaternary ammonium salt cation fluorocarbon;
5 to 10 percent of polymer sodium salt of 2-naphthalenesulfonic acid and formaldehyde;
20 to 25 percent of propane and butane;
the balance being 1,4 dioctyl sulfosuccinate;
preferably:
diethylene glycol monobutyl ether 45%;
8% of quaternary ammonium salt cation fluorocarbon;
8% of polymer sodium salt of 2-naphthalenesulfonic acid and formaldehyde;
23% of propane and butane;
16% of sulfo succinic acid-1, 4 dioctyl ester. In the invention, the diethylene glycol monobutyl ether (CAS NO.112-34-5) is a main component of the environment-friendly lotion, the quaternary ammonium salt cationic fluorocarbon (CAS NO.84166-37-0) is a surfactant, the polymer sodium salt (CAS NO.36290-04-7) of the 2-naphthalenesulfonic acid and formaldehyde is a dispersant, the propane butane (CAS NO.68476-86-8) is an LPG propellant, and the sulfosuccinic acid-1, 4 dioctyl ester (CAS NO.1639-66-3) is a penetrant; the sources of the diethylene glycol monobutyl ether, quaternary ammonium salt cationic fluorocarbon, 2-naphthalenesulfonic acid, polymer sodium salt of formaldehyde, propane butane, and 1,4 dioctyl sulfosuccinate are not particularly limited in the present invention, and commercially available products well known to those skilled in the art may be used. The preparation method of the first lotion is not particularly limited, and the technical scheme of mixing and dissolving the components with the content is well known to those skilled in the art.
In the present invention, the main purpose of the impregnation is to remove the protective oil from the glass surface of the mobile phone and to enable decontamination; the protective oil is a layer of water-soluble glue which is printed on the back surface of the glass in a silk-screen printing mode before silk-screen printing, and the protective oil mainly functions to reduce oil flying of the glass in the silk-screen printing process and reduce scratches of the glass in the silk-screen printing process. The cleaning agent with the components with specific contents can effectively remove protective glue, oil stain, residual glue of a protective film, white spots, various organic and inorganic pollutions, can peel off and soften flying spots, overflow glue and the like of silk screen printing, can cut off organic silicon molecular chains, and effectively eliminates the problem of water accumulation of products.
In the present invention, the impregnation process is preferably specifically:
and sequentially carrying out primary soaking treatment and secondary soaking treatment on the glass to be cleaned to obtain the soaked glass. In the present invention, the immersion liquid used in the first immersion treatment process is preferably an aqueous solution a of a lotion, that is, an aqueous solution of a lotion used in the above immersion process. In the invention, the mass percentage of the first lotion in the lotion aqueous solution A is preferably 0.5-1%, and more preferably 0.8%; the mass percentage of the second lotion in the lotion aqueous solution a is preferably 3.5% to 4.5%, more preferably 4%.
In the present invention, the immersion liquid used in the second immersion treatment is preferably an aqueous solution B of a detergent, that is, an aqueous solution of a detergent used in the above immersion process. In the invention, the mass percentage of the first lotion in the lotion aqueous solution B is preferably 3-5%, and more preferably 4%; the mass percentage of the second lotion in the lotion aqueous solution B is preferably 0.5% to 1%, and more preferably 0.8%.
In the invention, the temperature of the first soaking treatment is preferably 65-75 ℃, and more preferably 70 ℃; the time of the first soaking treatment is preferably 13min to 17min, and more preferably 15 min. In the invention, the temperature of the second soaking treatment is preferably 55-65 ℃, and more preferably 60 ℃; the time of the second soaking treatment is preferably 13min to 17min, and more preferably 15 min. The device for the first soaking treatment and the second soaking treatment is not particularly limited, and an automatic soaking device with a temperature control and a timer, which is well known to those skilled in the art, can be adopted.
After the dipped glass is obtained, the dipped glass is washed to obtain the washed glass. In the present invention, the main purpose of the washing is to remove dirt and also to remove residues. In the present invention, the number of washing is preferably 1 to 3, more preferably 2.
In the present invention, the lotion used in the washing process is preferably a third lotion; the third lotion preferably comprises the following components in percentage by mass:
15 to 20 percent of anhydrous sodium carbonate;
5 to 8 percent of AE-active ester;
5 to 10 percent of sodium silicate;
the balance of water;
more preferably:
17 to 18 percent of anhydrous sodium carbonate;
6 to 7 percent of AE-active ester;
7 to 8 percent of sodium silicate;
the balance of water. In the invention, the anhydrous sodium carbonate (CAS NO.497-19-8) is inorganic base, the AE-active ester (CAS NO.80756-85-0) is surfactant, the sodium silicate (CAS NO.10231-79-3) is compound with clean water, and the water (CAS NO.7732-18-5) is distilled water; the sources of the anhydrous sodium carbonate, AE-active ester and sodium silicate are not particularly limited in the present invention, and commercially available products well known to those skilled in the art may be used. The preparation method of the third lotion is not particularly limited, and the technical scheme of mixing and dissolving the components with the content mentioned above, which is well known to those skilled in the art, can be adopted.
In the present invention, the washing process is preferably specifically:
and sequentially carrying out primary ultrasonic treatment and secondary ultrasonic treatment on the dipped glass, and carrying out spray rinsing to obtain washed glass. In the present invention, the washing solution used in the first ultrasonic treatment process is preferably an aqueous solution a of a third washing agent; the mass percentage of the third lotion in the aqueous solution a of the third lotion is preferably 4% to 6%, and more preferably 5%.
In the present invention, the washing solution used in the second ultrasonic treatment process is preferably an aqueous solution B of a third washing agent; the mass percentage of the third lotion in the aqueous solution B of the third lotion is preferably 2% to 4%, and more preferably 3%.
In the invention, the temperature of the first ultrasonic treatment is preferably 60-70 ℃, and more preferably 65 ℃; the time of the first ultrasonic treatment is preferably 110s to 130s, and more preferably 120 s; the value of the ultrasonic current of the first ultrasonic treatment is preferably 2.5 to 3.5A, and more preferably 3A. In the invention, the temperature of the second ultrasonic treatment is preferably 60-70 ℃, and more preferably 65 ℃; the time of the second ultrasonic treatment is preferably 110s to 130s, and more preferably 120 s; the value of the ultrasonic current of the second ultrasonic treatment is preferably 2.5 to 3.5A, and more preferably 3A. The device for the first ultrasonic treatment and the second ultrasonic treatment is not particularly limited, and a main tank and an auxiliary tank circulating filter device with a filter element with the diameter of 0.5 mu m, which is well known to a person skilled in the art, are adopted to facilitate the continuous reduction of the impurity content in the solution.
In the present invention, the time for the shower rinsing is preferably 50s to 70s, and more preferably 60 s. In the invention, the spraying and washing can be carried out by adopting normal-temperature pure water well known by the technical personnel in the field; the water after spraying and washing is directly drained.
After the washed glass is obtained, the washed glass is rinsed to obtain rinsed glass. In the present invention, the main purpose of the rinsing is to remove the lotion. In the present invention, the rinsing process preferably includes several ultrasonic rinses, more preferably 4 ultrasonic rinses; wherein, the temperature of each ultrasonic rinsing is preferably 60-70 ℃, and more preferably 65 ℃; the time for each ultrasonic rinsing is preferably 110s to 130s, more preferably 120 s; the ultrasonic current value per ultrasonic rinsing is preferably 2A to 3A, more preferably 2.5A. The rinsing device is not particularly limited by the invention, and a main tank and an auxiliary tank circulating filter device with a filter element with the diameter of 0.5 mu m, which is well known to a person skilled in the art, are adopted to facilitate the continuous reduction of the impurity content in the solution.
In the present invention, the lotion used in the rinsing process is preferably pure water having a resistivity of more than 13M Ω · cm. In the present invention, the total water inflow for the rinsing is preferably 2L/min to 4L/min, and more preferably 3L/min. The invention has no special limitation on the water inlet mode of rinsing, and the circulating overflow can be realized by adopting a circulating overflow device for heating pure water by a high-level water tank, which is well known by the technical personnel in the field, so that new water can be supplemented by the circulating overflow.
In the present invention, after each ultrasonic rinsing, it is preferable to further include:
and (4) carrying out spray washing on the glass subjected to ultrasonic wave washing to obtain the washed glass. In the preferred embodiment of the invention, the rinsing process is 4 times of ultrasonic rinsing, and the invention only carries out spray rinsing after the first ultrasonic rinsing. In the present invention, the time for the shower rinsing is preferably 50s to 70s, and more preferably 60 s. In the invention, the spraying and washing can be carried out by adopting normal-temperature pure water well known by the technical personnel in the field; the water after spraying and washing is directly drained.
After the rinsed glass is obtained, the rinsed glass is sequentially dried and subjected to anti-static treatment to obtain the cleaned glass. In the present invention, the drying process preferably includes:
and (4) carrying out slow-drawing dehydration and hot air drying on the rinsed glass in sequence to obtain the dried glass. In the invention, the temperature of the slow-drawing dehydration is preferably 70-80 ℃, and more preferably 75 ℃; the slow-pull dehydration time is preferably 10 s-20 s, and more preferably 15 s; the total water inflow of the slow-pull dehydration is preferably 3L/min-5L/min, and more preferably 4L/min.
In the invention, the temperature for drying by hot air is preferably 90-110 ℃, and more preferably 100 ℃; the time for drying with hot air is preferably 60s to 80s, and more preferably 70 s. The device for drying by hot air is not particularly limited, and the tunnel type hot air baking device well known by the technical personnel in the field is adopted, and the air with the dust particle content reaching the standard of a dust-free room above Class100 is used.
In the present invention, the antistatic treatment time is preferably 25s to 35s, and more preferably 30 s. The device for antistatic treatment is not particularly limited, and an ion blower well known to those skilled in the art can be adopted.
The invention provides a method for cleaning mobile phone glass, which comprises the following steps: a) sequentially carrying out dipping, washing, rinsing, drying and antistatic treatment on glass to be cleaned to obtain cleaned glass; the lotion used in the impregnation process consists of a first lotion and a second lotion; the first lotion comprises the following components in percentage by mass: 10 to 25 percent of sodium dodecyl sulfate; 10 to 15 percent of anhydrous sodium carbonate; 10 to 25 percent of titanium dioxide; the balance of water; the second lotion comprises the following components in percentage by mass: 40 to 50 percent of diethylene glycol monobutyl ether; 5 to 10 percent of quaternary ammonium salt cation fluorocarbon; 5 to 10 percent of polymer sodium salt of 2-naphthalenesulfonic acid and formaldehyde; 20 to 25 percent of propane and butane; the balance being 1,4 dioctyl sulfosuccinate. Compared with the prior art, the cleaning method provided by the invention adopts the specific formula of the cleaning agent and the specific process steps, so that the cleaned mobile phone glass has very high cleanliness, is suitable for AOI detection and has low misjudgment rate. Experimental results show that when the mobile phone glass obtained by the cleaning method is used for AOI detection, the misjudgment rate caused by bad dirt can be reduced to below 10%, and the accuracy of AOI detection is greatly improved.
In addition, the cleaning method provided by the invention does not damage silk-screen printing ink, does not increase scratches of the mobile phone glass, is suitable for large-scale application, and is beneficial to promoting the smooth introduction of the AOI in the inspection process of the mobile phone glass cover plate (especially the front cover) in the processing process.
To further illustrate the present invention, the following examples are provided for illustration. The mobile phone glass to be cleaned in the following embodiment of the invention is 2.5D mobile phone front cover glass, and is inevitably contaminated; the AOI detection result is Rework or NG, and is shown in the figures 1-2; the resistivity of pure water used is greater than 13 M.OMEGA.cm.
Example 1
(1) Soaking the glass to be cleaned in the water solution A of the lotion for the first time at 70 ℃ for 15min, then soaking in the water solution B of the lotion for the second time at 60 ℃ for 15min to obtain the soaked glass;
the mass percent of the first lotion in the lotion aqueous solution A is 0.8%, and the mass percent of the second lotion is 4%; the mass percent of the first lotion in the lotion aqueous solution B is 4 percent, and the mass percent of the second lotion is 0.8 percent; wherein the first lotion comprises the following components in percentage by mass: 20% of sodium dodecyl sulfate, 13% of anhydrous sodium carbonate, 20% of titanium dioxide and 47% of distilled water; the second lotion comprises the following components in percentage by mass: 45% diethylene glycol monobutyl ether, 8% quaternary ammonium salt cationic fluorocarbon, 8% 2-naphthalenesulfonic acid, polymer sodium salt of formaldehyde, 23% propane butane, and 16% 1,4 dioctyl sulfosuccinate.
(2) Carrying out primary ultrasonic treatment on the dipped glass obtained in the step (1) for 120s at 65 ℃ by adopting an aqueous solution A of a third detergent, wherein the ultrasonic current value of the primary ultrasonic treatment is 3A, then carrying out secondary ultrasonic treatment for 120s at 65 ℃ by adopting an aqueous solution B of the third detergent, wherein the ultrasonic current value of the secondary ultrasonic treatment is 3A, and then carrying out spray rinsing for 60s by adopting normal-temperature pure water to obtain washed glass;
the mass percentage of the third lotion in the water solution A of the third lotion is 5 percent; the mass percentage of the third lotion in the water solution B of the third lotion is 3 percent; wherein the third lotion comprises the following components in percentage by mass: 18% anhydrous sodium carbonate, 7% AE-active ester, 8% sodium silicate and 67% distilled water.
(3) And (3) repeating the process of the step (2) to obtain the washed glass.
(4) And (4) carrying out ultrasonic rinsing on the washed glass obtained in the step (3) for 120s at 65 ℃ by adopting pure water, wherein the ultrasonic current value of the ultrasonic rinsing is 2.5A, so as to obtain the glass subjected to ultrasonic rinsing.
(5) And (4) spraying and washing the glass subjected to ultrasonic rinsing obtained in the step (4) for 60s by adopting normal-temperature pure water, and repeating the process of the step (4) for 3 times to obtain the rinsed glass.
(6) And (4) carrying out slow-drawing dehydration on the rinsed glass obtained in the step (5) at 75 ℃ for 15s, and then carrying out hot air drying at 100 ℃ for 70s to obtain the dried glass.
(7) And (4) carrying out anti-static treatment on the dried glass obtained in the step (6) for 30s to obtain cleaned glass.
Taking materials (cleaned glass) by a robot arm, and putting the glass into an AOI detection track to realize rapid detection and classification; wherein, the OK products and the NG products are manually sampled and tested, and the Rework products are manually retested in hundreds percent. The result shows that when the mobile phone glass obtained by the cleaning method provided by the embodiment 1 of the invention is used for AOI detection, the misjudgment rate caused by bad dirt can be reduced to 5%, and the accuracy of AOI detection is greatly improved.
Example 2
(1) Soaking the glass to be cleaned in the water solution A of the lotion for the first time at 70 ℃ for 15min, then soaking in the water solution B of the lotion for the second time at 60 ℃ for 15min to obtain the soaked glass;
the mass percent of the first lotion in the lotion aqueous solution A is 0.8%, and the mass percent of the second lotion is 4%; the mass percent of the first lotion in the lotion aqueous solution B is 4 percent, and the mass percent of the second lotion is 0.8 percent; wherein the first lotion comprises the following components in percentage by mass: 15% of sodium dodecyl sulfate, 12% of anhydrous sodium carbonate, 15% of titanium dioxide and 58% of distilled water; the second lotion comprises the following components in percentage by mass: 45% diethylene glycol monobutyl ether, 8% quaternary ammonium salt cationic fluorocarbon, 8% 2-naphthalenesulfonic acid, polymer sodium salt of formaldehyde, 23% propane butane, and 16% 1,4 dioctyl sulfosuccinate.
(2) Carrying out primary ultrasonic treatment on the dipped glass obtained in the step (1) for 120s at 65 ℃ by adopting an aqueous solution A of a third detergent, wherein the ultrasonic current value of the primary ultrasonic treatment is 3A, then carrying out secondary ultrasonic treatment for 120s at 65 ℃ by adopting an aqueous solution B of the third detergent, wherein the ultrasonic current value of the secondary ultrasonic treatment is 3A, and then carrying out spray rinsing for 60s by adopting normal-temperature pure water to obtain washed glass;
the mass percentage of the third lotion in the water solution A of the third lotion is 5 percent; the mass percentage of the third lotion in the water solution B of the third lotion is 3 percent; wherein the third lotion comprises the following components in percentage by mass: 17% anhydrous sodium carbonate, 6% AE-active ester, 7% sodium silicate and 70% distilled water.
(3) And (3) repeating the process of the step (2) to obtain the washed glass.
(4) And (4) carrying out ultrasonic rinsing on the washed glass obtained in the step (3) for 120s at 65 ℃ by adopting pure water, wherein the ultrasonic current value of the ultrasonic rinsing is 2.5A, so as to obtain the glass subjected to ultrasonic rinsing.
(5) And (4) spraying and washing the glass subjected to ultrasonic rinsing obtained in the step (4) for 60s by adopting normal-temperature pure water, and repeating the process of the step (4) for 3 times to obtain the rinsed glass.
(6) And (4) carrying out slow-drawing dehydration on the rinsed glass obtained in the step (5) at 75 ℃ for 15s, and then carrying out hot air drying at 100 ℃ for 70s to obtain the dried glass.
(7) And (4) carrying out anti-static treatment on the dried glass obtained in the step (6) for 30s to obtain cleaned glass.
Taking materials (cleaned glass) by a robot arm, and putting the glass into an AOI detection track to realize rapid detection and classification; wherein, the OK products and the NG products are manually sampled and tested, and the Rework products are manually retested in hundreds percent. The result shows that when the mobile phone glass obtained by the cleaning method provided by the embodiment 2 of the invention is used for AOI detection, the misjudgment rate caused by poor dirt can be reduced to 10%.
Example 3
(1) Soaking the glass to be cleaned in the water solution A of the lotion for the first time at 75 ℃ for 17min, then soaking in the water solution B of the lotion for the second time at 65 ℃ for 17min to obtain the soaked glass;
the mass percent of the first lotion in the lotion aqueous solution A is 0.8%, and the mass percent of the second lotion is 4%; the mass percent of the first lotion in the lotion aqueous solution B is 4 percent, and the mass percent of the second lotion is 0.8 percent; wherein the first lotion comprises the following components in percentage by mass: 20% of sodium dodecyl sulfate, 13% of anhydrous sodium carbonate, 20% of titanium dioxide and 47% of distilled water; the second lotion comprises the following components in percentage by mass: 45% diethylene glycol monobutyl ether, 8% quaternary ammonium salt cationic fluorocarbon, 8% 2-naphthalenesulfonic acid, polymer sodium salt of formaldehyde, 23% propane butane, and 16% 1,4 dioctyl sulfosuccinate.
(2) Carrying out primary ultrasonic treatment on the dipped glass obtained in the step (1) for 130s at 70 ℃ by adopting an aqueous solution A of a third detergent, wherein the ultrasonic current value of the primary ultrasonic treatment is 3.5A, then carrying out secondary ultrasonic treatment for 130s at 70 ℃ by adopting an aqueous solution B of the third detergent, wherein the ultrasonic current value of the secondary ultrasonic treatment is 3.5A, and then carrying out spray rinsing for 70s by adopting normal-temperature pure water to obtain washed glass;
the mass percentage of the third lotion in the water solution A of the third lotion is 5 percent; the mass percentage of the third lotion in the water solution B of the third lotion is 3 percent; wherein the third lotion comprises the following components in percentage by mass: 18% anhydrous sodium carbonate, 7% AE-active ester, 8% sodium silicate and 67% distilled water.
(3) And (3) repeating the process of the step (2) to obtain the washed glass.
(4) And (4) carrying out ultrasonic rinsing on the washed glass obtained in the step (3) for 130s at 70 ℃ by adopting pure water, wherein the ultrasonic current value of the ultrasonic rinsing is 3A, so as to obtain the glass subjected to ultrasonic rinsing.
(5) And (5) spraying and washing the glass subjected to ultrasonic rinsing in the step (4) for 70s by adopting normal-temperature pure water, and repeating the process in the step (4) for 3 times to obtain the rinsed glass.
(6) And (4) carrying out slow drawing dehydration on the rinsed glass obtained in the step (5) at the temperature of 80 ℃ for 20s, and then carrying out hot air drying at the temperature of 110 ℃ for 80s to obtain the dried glass.
(7) And (4) carrying out anti-static treatment on the dried glass obtained in the step (6) for 35s to obtain cleaned glass.
Taking materials (cleaned glass) by a robot arm, and putting the glass into an AOI detection track to realize rapid detection and classification; wherein, the OK products and the NG products are manually sampled and tested, and the Rework products are manually retested in hundreds percent. The result shows that when the mobile phone glass obtained by the cleaning method provided by the embodiment 3 of the invention is used for AOI detection, the misjudgment rate caused by poor dirt can be reduced to 8%.
Example 4
(1) Soaking the glass to be cleaned in the water solution A of the lotion for the first time at 65 ℃ for 13min, then soaking in the water solution B of the lotion for the second time at 55 ℃ for 13min to obtain the soaked glass;
the mass percent of the first lotion in the lotion aqueous solution A is 0.8%, and the mass percent of the second lotion is 4%; the mass percent of the first lotion in the lotion aqueous solution B is 4 percent, and the mass percent of the second lotion is 0.8 percent; wherein the first lotion comprises the following components in percentage by mass: 20% of sodium dodecyl sulfate, 13% of anhydrous sodium carbonate, 20% of titanium dioxide and 47% of distilled water; the second lotion comprises the following components in percentage by mass: 45% diethylene glycol monobutyl ether, 8% quaternary ammonium salt cationic fluorocarbon, 8% 2-naphthalenesulfonic acid, polymer sodium salt of formaldehyde, 23% propane butane, and 16% 1,4 dioctyl sulfosuccinate.
(2) Carrying out primary ultrasonic treatment on the dipped glass obtained in the step (1) for 110s at 60 ℃ by adopting an aqueous solution A of a third detergent, wherein the ultrasonic current value of the primary ultrasonic treatment is 2.5A, then carrying out secondary ultrasonic treatment for 110s at 60 ℃ by adopting an aqueous solution B of the third detergent, wherein the ultrasonic current value of the secondary ultrasonic treatment is 2.5A, and then carrying out spray rinsing for 50s by adopting normal-temperature pure water to obtain washed glass;
the mass percentage of the third lotion in the water solution A of the third lotion is 5 percent; the mass percentage of the third lotion in the water solution B of the third lotion is 3 percent; wherein the third lotion comprises the following components in percentage by mass: 18% anhydrous sodium carbonate, 7% AE-active ester, 8% sodium silicate and 67% distilled water.
(3) And (3) repeating the process of the step (2) to obtain the washed glass.
(4) And (4) carrying out ultrasonic rinsing on the washed glass obtained in the step (3) for 110s at 60 ℃ by adopting pure water, wherein the ultrasonic current value of the ultrasonic rinsing is 2A, so as to obtain the glass subjected to ultrasonic rinsing.
(5) And (4) spraying and washing the glass subjected to ultrasonic rinsing obtained in the step (4) for 50s by adopting normal-temperature pure water, and repeating the process of the step (4) for 3 times to obtain the rinsed glass.
(6) And (4) carrying out slow-drawing dehydration on the rinsed glass obtained in the step (5) at 70 ℃ for 10s, and then carrying out hot air drying at 90 ℃ for 60s to obtain the dried glass.
(7) And (4) carrying out anti-static treatment on the dried glass obtained in the step (6) for 25s to obtain cleaned glass.
Taking materials (cleaned glass) by a robot arm, and putting the glass into an AOI detection track to realize rapid detection and classification; wherein, the OK products and the NG products are manually sampled and tested, and the Rework products are manually retested in hundreds percent. The result shows that when the mobile phone glass obtained by the cleaning method provided by the embodiment 4 of the invention is used for AOI detection, the misjudgment rate caused by poor dirt can be reduced to 9%.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A method for cleaning mobile phone glass comprises the following steps:
a) sequentially carrying out dipping, washing, rinsing, drying and antistatic treatment on glass to be cleaned to obtain cleaned glass; the impregnation process specifically comprises the following steps:
sequentially carrying out primary soaking treatment and secondary soaking treatment on the glass to be cleaned to obtain soaked glass;
the steeping liquor used in the first soaking treatment process is an aqueous solution A of a lotion; the mass percent of the first lotion in the lotion aqueous solution A is 0.5-1%, and the mass percent of the second lotion is 3.5-4.5%;
the steeping liquor used in the second soaking treatment process is an aqueous solution B of a lotion; the mass percent of the first lotion in the lotion aqueous solution B is 3-5%, and the mass percent of the second lotion is 0.5-1%;
the lotion used in the impregnation process consists of a first lotion and a second lotion;
the first lotion comprises the following components in percentage by mass:
10 to 25 percent of sodium dodecyl sulfate;
10 to 15 percent of anhydrous sodium carbonate;
10 to 25 percent of titanium dioxide;
the balance of water;
the second lotion comprises the following components in percentage by mass:
40 to 50 percent of diethylene glycol monobutyl ether;
5 to 10 percent of quaternary ammonium salt cation fluorocarbon;
5 to 10 percent of polymer sodium salt of 2-naphthalenesulfonic acid and formaldehyde;
20 to 25 percent of propane and butane;
the balance being 1,4 dioctyl sulfosuccinate;
the washing times are 1 to 3 times;
the lotion used in the washing process is a third lotion;
the third lotion comprises the following components in percentage by mass:
15 to 20 percent of anhydrous sodium carbonate;
5 to 8 percent of AE-active ester;
5 to 10 percent of sodium silicate;
the balance of water.
2. The cleaning method according to claim 1, wherein the temperature of the first soaking treatment is 65-75 ℃ and the time is 13-17 min;
the temperature of the second soaking treatment is 55-65 ℃, and the time is 13-17 min.
3. The cleaning method according to claim 1, wherein the washing process is specifically:
sequentially carrying out first ultrasonic treatment and second ultrasonic treatment on the dipped glass, and carrying out spray rinsing to obtain washed glass;
the washing liquid used in the first ultrasonic treatment process is an aqueous solution A of a third washing agent; the mass percentage of the third lotion in the water solution A of the third lotion is 4-6%;
the washing liquid used in the second ultrasonic treatment process is an aqueous solution B of a third washing agent; the mass percentage of the third lotion in the water solution B of the third lotion is 2-4%.
4. The cleaning method according to claim 3, wherein the temperature of the first ultrasonic treatment is 60 ℃ to 70 ℃, the time is 110s to 130s, and the ultrasonic current value is 2.5A to 3.5A;
the temperature of the second ultrasonic treatment is 60-70 ℃, the time is 110-130 s, and the ultrasonic current value is 2.5-3.5A;
the time for spraying and washing is 50-70 s.
5. The cleaning method according to claim 1, wherein the rinsing process in step a) comprises several ultrasonic rinses; the temperature of each ultrasonic rinsing is 60-70 ℃, the time is 110-130 s, and the ultrasonic current value is 2-3A;
the lotion used in the rinsing process is pure water with the resistivity of more than 13M omega cm;
the total water inflow of the rinsing is 2L/min-4L/min.
6. The cleaning method according to claim 5, further comprising, after each ultrasonic rinsing:
carrying out spray washing on the glass subjected to ultrasonic wave washing to obtain the washed glass; the time for spraying and washing is 50-70 s.
7. The cleaning method according to claim 1, wherein the drying process in step a) is specifically:
carrying out slow-drawing dehydration and hot air drying on the rinsed glass in sequence to obtain dried glass;
the temperature of the slow-drawing dehydration is 70-80 ℃, the time is 10-20 s, and the total water inflow is 3-5L/min;
the temperature for drying by hot air is 90-110 ℃ and the time is 60-80 s.
8. The cleaning method according to claim 1, wherein the antistatic treatment time in the step a) is 25 to 35 seconds.
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| CN113103791A (en) * | 2021-04-21 | 2021-07-13 | 广东星星精密玻璃科技有限公司 | 3D glass multi-pattern merging pad printing process |
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