CN109250896B - Processing method and application of glass panel - Google Patents
Processing method and application of glass panel Download PDFInfo
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- CN109250896B CN109250896B CN201710568052.2A CN201710568052A CN109250896B CN 109250896 B CN109250896 B CN 109250896B CN 201710568052 A CN201710568052 A CN 201710568052A CN 109250896 B CN109250896 B CN 109250896B
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- glass panel
- protective
- protective film
- oil layer
- water
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Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/001—General methods for coating; Devices therefor
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2218/00—Methods for coating glass
- C03C2218/10—Deposition methods
- C03C2218/11—Deposition methods from solutions or suspensions
- C03C2218/112—Deposition methods from solutions or suspensions by spraying
Abstract
The invention provides a processing method and application of a glass panel, and relates to the field of glass panel processing.
Description
Technical Field
The invention relates to the technical field of glass panel processing, in particular to a processing method and application of a glass panel.
Background
In the process of processing a display screen of an electronic product, some glass panel products need to adopt a spraying process to prepare a decorative area on a glass panel. In order to prevent the window area on the glass panel from being polluted by the sprayed ink, a protective film needs to be attached to the window area before spraying, and then the spraying operation of the decorative area needs to be performed. And after the spraying is finished, removing the protective film. Because the protective film is easy to generate residual glue when meeting high temperature, and if bubbles exist in the film pasting process, stubborn offset printing can be left on the glass panel after the baking process. In order to remove offset printing, a special procedure is required to be arranged for cleaning or erasing, the treatment difficulty is high, manpower and material resources are wasted, and the fingerprint-proof film of the glass panel is extremely easy to damage in the cleaning or erasing process, so that the product is poor.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The first purpose of the invention is to provide a processing method of a glass panel, which is used for solving the technical problem that the product reject ratio is high due to the fact that offset printing which is difficult to remove is left on the surface of the glass panel in the process of removing a protective film in the existing processing method.
The second purpose of the invention is to provide the application of the processing method of the glass panel, and the 3D glass panel processed and prepared by the processing method can effectively improve the working efficiency and reduce the reject ratio of products.
In order to achieve the above purpose of the present invention, the following technical solutions are adopted:
a processing method of a glass panel comprises the step of preparing a protective oil layer on the glass panel in a window area before a protective film is attached.
Further, the method comprises the following steps: preparing a protective oil layer on the glass panel in the window area, then pasting a protective film on the protective oil layer, spraying ink, and finally removing the protective film and the protective oil layer in sequence to finish the processing of the glass panel.
Further, the protective oil layer is a water-soluble protective oil layer.
Further, the raw material of the water-soluble protective oil layer is water-soluble protective printing ink or the water-soluble protective oil layer comprises the following raw materials in parts by weight: water-soluble protective ink: 100 parts of water: (3-6).
Further, the method for preparing the protective oil layer includes a pad printing method.
Further, the protective oil layer removing method comprises the step of removing the protective oil layer by using hot water.
Further, the method for removing the protective oil layer comprises the following steps: and (3) placing the glass panel covered with the protective oil layer in hot water at 30-100 ℃, and soaking or washing for 5-15 min.
Further, the protective film includes a first protective film and a second protective film, and the second protective film is in contact with the protective oil layer.
Further, the side length of the second protection film is larger than the side length of the first protection film corresponding to the second protection film.
Further, the size difference between the side length of the second protective film and the side length of the first protective film is 0.25-0.3 mm.
Further, the thickness of the first protective film is 0.15-0.25mm, and the thickness of the second protective film is 0.03-0.07 mm.
An application of the processing method of the glass panel in the preparation of a 3D glass panel.
Compared with the prior art, the invention has the following beneficial effects:
the processing method of the glass panel provided by the invention is that a layer of protective oil layer is prepared on the glass panel in the window area before the protective film is pasted, then the protective film is pasted on the protective oil layer, so that the protective film is not in direct contact with the glass panel, after the spraying is finished and the subsequent baking process is carried out, the protective film pasted on the protective oil layer can be naturally curled and is very easy to remove, and the protective oil layer is removed after the protective film is removed. Because the protective oil layer can not be bonded with the glass panel, the offset printing problem generated by the protective film can be effectively solved.
When the processing method provided by the invention is used for processing the glass panel, the residual glue and offset printing qualification rate (primary qualification rate) of a front window area which is not cleaned is more than 95 percent, while when the traditional processing method is used for processing the glass panel, namely a method for directly sticking a protective film on the glass panel, the residual glue and the offset printing exist in the front window area which is not cleaned, and the primary qualification rate is zero.
In addition, when the protective film is removed by using the traditional processing method, a special film-tearing label is required to be used, and the operation time for tearing off each protective film is about 25-35 s, but by adopting the processing method provided by the invention, after the subsequent baking process, the protective film adhered on the protective oil layer can be naturally curled, the protective film can be gently taken off by hands, special tools and raw materials are not required to be used, and the operation time for tearing off each protective film is about 3-6 s, so that the working efficiency of operators is improved by more than four times.
By utilizing the processing method provided by the invention, the qualification rate of the final product is improved by more than 20%, the processing time is reduced to 462min from every 1000 pieces of 1542min, and the processing time of the working procedure is shortened by more than 60%.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
In one aspect of the present invention, there is provided a method of processing a glass panel, comprising the step of preparing a protective oil layer on the glass panel in a window area before attaching a protective film.
The processing method of the glass panel provided by the invention is that a layer of protective oil layer is prepared on the glass panel in the window area before the protective film is pasted, then the protective film is pasted on the protective oil layer, so that the protective film is not in direct contact with the glass panel, after the spraying is finished and the subsequent baking process is carried out, the protective film pasted on the protective oil layer can be naturally curled and is very easy to remove, and the protective oil layer is removed after the protective film is removed. Because the protective oil layer can not be bonded with the glass panel, the offset printing problem generated by the protective film can be effectively solved.
When the processing method provided by the invention is used for processing the glass panel, the residual glue and offset printing qualification rate (primary qualification rate) of a front window area which is not cleaned is more than 95 percent, while when the traditional processing method is used for processing the glass panel, namely a method for directly sticking a protective film on the glass panel, the residual glue and the offset printing exist in the front window area which is not cleaned, and the primary qualification rate is zero.
In addition, when the protective film is removed by using the traditional processing method, a special film-tearing label is required to be used, and the operation time for tearing off each protective film is about 25-35 s, but by adopting the processing method provided by the invention, after the subsequent baking process, the protective film adhered on the protective oil layer can be naturally curled, the protective film can be gently taken off by hands, special tools and raw materials are not required to be used, and the operation time for tearing off each protective film is about 3-6 s, so that the working efficiency of operators is improved by more than four times.
By utilizing the processing method provided by the invention, the qualification rate of the final product is improved by more than 20%, the processing time is reduced to 462min from every 1000 pieces of 1542min, and the processing time of the working procedure is shortened by more than 60%.
As a preferred embodiment of the present invention, the processing method comprises the steps of: preparing a protective oil layer on the glass panel in the window area, then pasting a protective film on the protective oil layer, spraying ink, and finally removing the protective film and the protective oil layer in sequence to finish the processing of the glass panel. The window area is prepared by adopting a spraying process, a protective oil layer and a protective film are used for protecting the window area, then the spraying process is used for spraying ink on the glass panel, and then the protective film and the protective oil layer are removed, so that a required structure is processed in an area outside the window area of the glass panel to meet the requirement of electronic equipment.
In a preferred embodiment of the present invention, the protective oil layer is a water-soluble protective oil layer. The water-soluble protection oil layer is selected for use to protect the oil layer and can wash the glass panel with water and just can get rid of the protection oil layer of adhering to on the glass panel, labour saving and time saving, convenient operation.
In a preferred embodiment of the present invention, the water-soluble protective oil layer is made of water-soluble protective ink or comprises the following raw materials in parts by weight: water-soluble protective ink: 100 parts of water: (3-6).
The water-soluble protective ink herein refers to undiluted crude oil. When the water-soluble protective oil layer is prepared, the water-soluble protective printing ink can be directly prepared by using crude oil, and can also be diluted for use. The fluidity of the protective oil layer on the glass panel is adjusted by adjusting the proportion of raw materials in the protective oil layer, so that the protective oil layer is ensured to be in full contact with the glass panel and cannot flow randomly. Because electronic products have strict requirements on dimensional accuracy, the size of a protective oil layer on a glass panel is also accurately controlled, otherwise the protective oil layer can damage the size of a processed window area, and the products are poor.
As a preferred embodiment of the present invention, the method of preparing the protective oil layer includes a pad printing method.
Pad printing belongs to one of special printing modes, and can print characters, figures and images on the surface of an irregular special-shaped object, thereby becoming an important special printing method. For example, characters and patterns on the surface of a mobile phone are printed by the printing method, and the printing on the surfaces of a plurality of electronic products such as computer keyboards, instruments and the like is finished by pad printing, so that the printing method has obvious advantages in printing products with small areas and concave-convex surfaces.
As a preferred embodiment of the present invention, the pad printing method comprises the steps of:
step a): placing the blended water-soluble protective oil raw material into an oil cup and mounting the pad printing steel plate on a pad printing machine for later use;
wherein, the water-soluble protective oil raw material is obtained by mixing water-soluble protective printing ink or water with the water-soluble protective printing ink, and the proportion of the water-soluble protective printing ink to the water is 100: (3-6);
the on-line viscosity was 7900-;
when the blended raw materials are used, the linear viscosity of the mixed raw materials is 9900-;
step b): placing a glass panel on a pad printing base of a pad printing machine, wherein the pad printing base is designed and processed according to the size of the glass panel and is used for fixing the glass panel;
step c): setting pad printing parameters of a pad printing machine, and printing a protective oil layer on the glass panel;
step d): taking out the glass panel with the transferred protective oil layer, and putting the glass panel into a tunnel baking furnace for baking; the thickness of the protective oil layer after drying is 1-6 μm;
wherein, the baking parameters can be set according to the requirements of the glass panel.
In the above preferred embodiment, the transfer printing of the protective oil layer on the glass panel can be achieved by adjusting the transfer printing parameters using a general pad printing machine.
As a preferred embodiment of the present invention, the method for removing the protective oil layer includes the step of removing the protective oil layer with hot water.
In the above preferred embodiment, hot water means water having a temperature higher than 30 ℃. The protective oil layer is removed by hot water, no pollution is caused, and the glass panel is not damaged.
As a preferred embodiment of the present invention, the method for removing the protective oil layer comprises the steps of: and (3) placing the glass panel covered with the protective oil layer in hot water at 30-100 ℃, and soaking or washing for 5-15 min.
Soaking in 30-100 deg.C hot water, automatically dissolving the protective oil layer attached to the glass panel in water, soaking or washing for 5-15min, taking out, removing the protective oil layer, and oven drying or cleaning the glass panel.
As a preferred embodiment of the present invention, the protective film includes a first protective film and a second protective film, and the second protective film is in contact with the protective oil layer.
In a preferred embodiment of the present invention, a side length of the second protective film is larger than a side length of the first protective film corresponding to the second protective film.
The protection film sets up to two-layer structure and can make between the printing ink layer of spraying and the glass panels have a transition face that relaxes, avoids the printing ink layer of spraying and glass panels great step in the appearance of vertical direction.
In a preferred embodiment of the present invention, a dimension difference between a side length of the second protective film and a side length of the first protective film is 0.25 to 0.3 mm.
In a preferred embodiment of the present invention, the first protective film has a thickness of 0.15 to 0.25mm, and the second protective film has a thickness of 0.03 to 0.07 mm.
The structure of the step between the sprayed ink layer and the glass panel can be further optimized by adjusting the size of each direction between the first protective film and the second protective film.
An application of the processing method of the glass panel in the preparation of a 3D glass panel.
The present invention will be described in further detail with reference to examples and comparative examples.
Example 1
The embodiment is a processing method of a 3D glass panel, which comprises the following steps:
step a): placing the blended water-soluble protective oil raw material into an oil cup, and mounting the pad printing steel plate and the pad printing rubber head on a pad printing machine for later use;
the water-soluble protective oil is prepared by mixing water-soluble protective ink and water, wherein the ratio of the water-soluble protective ink to the water is 100: 3; the on-line viscosity at pad printing was 9900 Mpas;
the ink cup, the pad printing steel and the pad printing rubber head are part of pad printing equipment, an etched groove for gathering water-soluble protective ink is arranged on a pad printing steel plate, the shape and the size of the groove correspond to those of a protected surface of a glass panel, and the pad printing rubber head dips the water-soluble protective ink from the groove of the pad printing steel plate to be printed on a protected area, namely a window area, of the glass panel during pad printing, so that the purpose of pad printing an oil layer is achieved;
step b): placing the glass panel on a pad printing base of a pad printing machine, wherein the pad printing base is designed and processed according to the size of the glass panel and is used for fixing the glass panel;
wherein, be equipped with the base die cavity on the bat printing base, the base die cavity is according to 1 with the overall dimension of glass panels: 1, designing and processing in proportion;
step c): setting pad printing parameters of a pad printing machine, and printing a protective oil layer on the glass panel;
wherein, the specifications and the models of the pad printing machine are as follows: WN-TECG 140, produced by Ronglong corporation, the transfer parameters include: the oil taking height is 58-62 mm, the printing height is 198-202 mm, the cleaning height is 168-172 mm, the in-out speed of a pad printing steel plate is 2400r/mim, the printing speed is 1900r/min, the oil taking speed is 180r/min at the slow speed, the oil taking speed is 50r/min at the slow speed, the printing speed is 1200r/min at the slow speed, and the printing speed is 1200r/min at the slow speed;
in the process of pad printing products, a pad printing program is programmed and controlled through software carried by a pad printing machine;
step d): taking out the glass panel with the transferred protective oil layer, and putting the glass panel into a tunnel baking furnace for baking;
the baking parameters are as follows: baking at 150 deg.C for 10 min; after drying, the thickness of the protective oil layer is 2 mu m;
step e): sticking a protective film on the surface of the dried protective oil layer;
wherein the protective film is designed according to the size requirement of the protected surface of the glass panel;
step f): spraying an ink layer on the surface of the glass panel with the protective film stuck thereon by adopting a spraying process, and then drying the ink layer;
in the spraying process, the spraying procedure is carried out according to the normal technological parameters of the glass panel; drying parameters after spraying when drying: oven drying at 180 deg.C for 30 min;
step g): uncovering the protective film on the glass panel;
step h): putting the glass panel with the protective film removed into hot water to remove the water-soluble protective oil layer, and then cleaning the glass panel by using a cleaning machine;
in the process of removing the water-soluble protective oil layer, the hot water is industrial pure water, the temperature of the water is 70 ℃, and the soaking time is 20 min;
12-groove ultrasonic cleaning machines are adopted during cleaning;
step i): and packaging the cleaned glass panel for the next working procedure.
Example 2
The embodiment is a processing method of a 3D glass panel, which comprises the following steps:
step a): placing the blended water-soluble protective oil raw material into an oil cup, and mounting the pad printing steel plate and the pad printing rubber head on a pad printing machine for later use;
wherein the water-soluble protective oil raw material adopts water-soluble protective printing ink crude oil, and the on-line viscosity is 7900-9500Mpas during transfer printing;
the ink cup, the pad printing steel and the pad printing rubber head are part of pad printing equipment, an etched groove for gathering water-soluble protective ink is arranged on a pad printing steel plate, the shape and the size of the groove correspond to those of a protected surface of a glass panel, and the pad printing rubber head dips the water-soluble protective ink from the groove of the pad printing steel plate to be printed on a protected area, namely a window area, of the glass panel during pad printing, so that the purpose of pad printing an oil layer is achieved;
step b): placing the glass panel on a pad printing base of a pad printing machine, wherein the pad printing base is designed and processed according to the size of the glass panel and is used for fixing the glass panel;
wherein, be equipped with the base die cavity on the bat printing base, the base die cavity is according to 1 with the overall dimension of glass panels: 1, designing and processing in proportion;
step c): setting pad printing parameters of a pad printing machine, and printing a protective oil layer on the glass panel;
wherein, the specifications and the models of the pad printing machine are as follows: WN-TECG 140, produced by Ronglong corporation, the transfer parameters include: the oil taking height is 58-62 mm, the printing height is 198-202 mm, the cleaning height is 168-172 mm, the in-out speed of a pad printing steel plate is 1999r/mim, the printing speed is 2499r/min, the oil taking speed at a slow speed is 240r/min, the oil taking speed at a slow speed is 150r/min, the printing speed at a slow speed is 999r/min, and the printing speed at a slow speed is 999 r/min;
in the process of pad printing products, a pad printing program is programmed and controlled through software carried by a pad printing machine;
step d): taking out the glass panel with the transferred protective oil layer, and putting the glass panel into a tunnel baking furnace for baking;
the baking parameters are as follows: baking at 150 deg.C for 10 min; the thickness of the protective oil layer after drying is 2 μm;
step e): sticking a protective film on the surface of the dried protective oil layer;
wherein the protective film is designed according to the size requirement of the protected surface of the glass panel;
step f): spraying an ink layer on the surface of the glass panel with the protective film stuck thereon by adopting a spraying process, and then drying the ink layer;
in the spraying process, the spraying procedure is carried out according to the normal technological parameters of the glass panel; drying parameters after spraying when drying: oven drying at 180 deg.C for 30 min;
step g): uncovering the protective film on the glass panel;
step h): putting the glass panel with the protective film removed into hot water to remove the water-soluble protective oil layer, and then cleaning the glass panel by using a cleaning machine;
in the process of removing the water-soluble protective oil layer, the hot water is industrial pure water, the temperature of the water is 100 ℃, and the soaking time is 10 min;
12-groove ultrasonic cleaning machines are adopted during cleaning;
step i): and packaging the cleaned glass panel for the next working procedure.
Comparative example
The window area of the glass panel is processed by utilizing a traditional processing method, namely, the protective film is firstly attached to the glass panel, then the ink is sprayed, the protective film is removed after the spraying is finished, and finally the residual glue and the offset printing remained in the window area after the protective film is removed by manual wiping are also needed, so that the processing of the glass panel is finished.
And (3) comparison test: 1000 glass panels were each processed using the methods provided in examples 1 and 2, respectively, and comparative examples, and the product yield and processing time were recorded for each processing method, and the results are listed in Table 1. The product percent of pass is the percentage of qualified products from the beginning of transfer printing of the water-soluble protective oil layer to the completion of processing, and the processing time comprises the time for wiping residual glue and offset printing in a window area after the protective film and the protective oil layer are removed.
TABLE 1 percent product pass and processing time for different processing methods
| Inspection item | Example 1 | Example 2 | Comparative example |
| Product percent of pass | 95％ | 95％ | 74％ |
| Working time | 7.7H | 7.7H | 25.7H |
As can be seen from table 1, compared with the conventional processing method, the processing method provided by the present invention improves the product yield by more than 20%, reduces the processing time from every 1000 tablets 1542min to 462min, and shortens the processing time of the process by more than 60%.
When the processing method provided by the invention is used for processing the glass panel, the residual glue and offset printing qualification rate (primary qualification rate) of a front window area which is not cleaned is more than 95 percent, while when the traditional processing method is used for processing the glass panel, namely a method for directly sticking a protective film on the glass panel, the residual glue and the offset printing exist in the front window area which is not cleaned, and the primary qualification rate is zero. In the subsequent product inspection and cleaning process, the method provided by the embodiment is used for processing, and the dust/particles in the air adsorbed on the surface of the glass surface in the processing and transporting process and the fingerprints possibly caused by manual work are cleaned instead of wiping the offset print in the later product inspection and cleaning process, so that the glass surface is very easy to wipe and belongs to the conventional action; the products in the comparative example need 100% wiping offset in addition to wiping common dust/particles, finger marks and the like, and over 26% of the products cannot be wiped off, so that the processing difficulty is increased, and the ratio of unqualified products is higher.
While particular embodiments of the present invention have been illustrated and described, it would be obvious that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.
Claims (7)
1. A method of processing a glass panel, the method comprising the steps of: preparing a protective oil layer on the glass panel in the window area, then pasting a protective film on the protective oil layer, spraying ink, and finally removing the protective film and the protective oil layer in sequence to finish the processing of the glass panel;
the protective oil layer is a water-soluble protective oil layer, and the water-soluble protective oil layer comprises the following raw materials in parts by weight: water-soluble protective ink: 100 parts of water: (3-6);
the method for removing the protective oil layer comprises the step of removing the protective oil layer by using hot water, and comprises the following steps: and (3) placing the glass panel covered with the protective oil layer in hot water at 30-100 ℃, and soaking or washing for 5-15 min.
2. The method of claim 1, wherein the step of preparing a protective oil layer comprises pad printing.
3. The method for processing a glass panel according to claim 1 or 2, wherein the protective film includes a first protective film and a second protective film, and the second protective film is in contact with the protective oil layer.
4. The method for processing a glass panel according to claim 3, wherein a side length of the second protective film is larger than a side length of the first protective film corresponding to the second protective film.
5. The method for processing a glass panel according to claim 4, wherein a difference between a side length of the second protective film and a side length of the first protective film is 0.25 to 0.3 mm.
6. The method as claimed in claim 3, wherein the first protective film has a thickness of 0.15-0.25mm, and the second protective film has a thickness of 0.03-0.07 mm.
7. Use of a method of processing a glass panel according to any of claims 1 to 6 for the production of a 3D glass panel.
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| CN106033273A (en) * | 2015-03-17 | 2016-10-19 | 南昌欧菲光学技术有限公司 | Manufacturing method for touch screen cover plate |
| CN106933402A (en) * | 2015-12-31 | 2017-07-07 | 东莞市亚马电子有限公司 | A kind of touch-screen gold-tinted processing procedure and in the processing procedure the de-oiling of protection alkali ink |
| CN106830705A (en) * | 2017-01-23 | 2017-06-13 | 伯恩光学(惠州)有限公司 | The preparation method of glass panel surface coating figure |
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