CN110757902A - Protective film for liquid crystal display and preparation process thereof - Google Patents
Protective film for liquid crystal display and preparation process thereof Download PDFInfo
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- CN110757902A CN110757902A CN201810832218.1A CN201810832218A CN110757902A CN 110757902 A CN110757902 A CN 110757902A CN 201810832218 A CN201810832218 A CN 201810832218A CN 110757902 A CN110757902 A CN 110757902A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/06—Interconnection of layers permitting easy separation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/206—Insulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/554—Wear resistance
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Laminated Bodies (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a protective film for liquid crystal display and a preparation process thereof, wherein the protective film for liquid crystal display comprises a first ink layer, a first PET release film, a silica gel layer and the like, wherein the bottom surface of the first ink layer is connected with the top surface of the first PET release film, the bottom surface of the first PET release film is connected with the top surface of the silica gel layer, the bottom surface of the silica gel layer is connected with the top surface of a PU adhesive layer, the bottom surface of the PU adhesive layer is connected with the top surface of a PET substrate, the bottom surface of the PET substrate is connected with the top surface of an acrylic adhesive layer, the bottom surface of the acrylic adhesive layer is connected with the top surface of an anti-scratch adhesive layer, the bottom surface of the anti-scratch adhesive. The invention has reasonable design, simple structure, excellent electrical insulation, high temperature resistance, friction resistance and good stability, can meet the requirements of different customers, not only can save the protective film attaching process, improve the efficiency and save the cost, but also can avoid the problem that the protective film falls off from the periphery of the film, and the protective film can also be applied to the special application fields of high-temperature conditions, curved surface occasions and the like.
Description
Technical Field
The invention relates to a protective film and a preparation process thereof, in particular to a protective film for liquid crystal display and a preparation process thereof.
Background
The liquid crystal display panel is located on the uppermost layer of the liquid crystal display module, and in order to prevent external dust particles from being adhered to the surface of the liquid crystal display panel in the processes of carrying, storing, stacking and the like, or artificial abrasion and scratch, the existing liquid crystal display module is adhered with a liquid crystal display module protective film made of Polyethylene (PE) or polyethylene terephthalate (PET) and other plastic materials. The existing protective film attaching needs to separately attach a protective film on the surface of a liquid crystal display panel and a protective film of a printed circuit board, and the protective film attaching mode is that an operator fixes the protective film at a proper position on one hand, and takes a rubber tape from a rubber tape cutting machine on the other hand, and then fixes the protective film on a liquid crystal display module by using the rubber tape. The existing protective film has the defects of complex attaching process, low efficiency and high cost, the protective film is easy to fall off from the periphery of the film, and the existing protective film cannot meet the application requirements of special occasions, such as high-temperature conditions, curved surface occasions and the like.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a protective film for liquid crystal display and a preparation process thereof, the protective film is reasonable in design and simple in structure, not only can the protective film attaching process be saved, the efficiency is improved, the cost is saved, but also the problem that the protective film falls off from the periphery of the film can be avoided, and the protective film can be applied to special application fields such as high-temperature conditions and curved surface occasions.
The invention solves the technical problems through the following technical scheme: the utility model provides a protection film for liquid crystal display, a serial communication port, it includes first printing ink layer, first PET is from the type membrane, the silica gel layer, the PU glue film, the PET substrate, the ya keli glue film, prevent the fish tail glue film, second PET is from the type membrane, second printing ink layer, the bottom surface on first printing ink layer links to each other with the top surface that first PET was from the type membrane, first PET is continuous with the top surface on silica gel layer from the bottom surface of type membrane, the bottom surface on silica gel layer links to each other with the top surface on PU glue film, the bottom surface on PU glue film links to each other with the top surface of PET substrate, the bottom surface of PET substrate links to each other with the top surface on ya keli glue film, the bottom surface on ya keli glue film links to each other with the top surface on fish tail glue film, the bottom surface on second was from.
Preferably, the PU adhesive layer can be replaced by a UV visbreaking pressure-sensitive adhesive layer or a high-temperature-resistant pressure-sensitive adhesive layer.
The invention also provides a preparation process of the protective film for the liquid crystal display, which is characterized by comprising the following production steps of: adding raw materials, namely preparing a PET (polyethylene terephthalate) substrate, PU (polyurethane) glue, a PET release film, silica gel, acrylic glue, scratch-resistant glue, printing ink and the like as raw materials; step two, primary coating, namely, performing primary coating by using a PET substrate as a base film, coating PU glue and silica gel on one surface of the base film through a coating line, uniformly coating, slightly drying, covering a layer of PET release film on one side coated with the PU glue, and discharging intermediate bubbles; thirdly, one-time stamping, namely putting the covered raw materials into a stamping machine for first-time stamping to ensure that the raw materials are completely attached; step four, secondary coating, namely coating the PET substrate surface of the product subjected to the primary stamping for the second time, coating acrylic glue and scratch-resistant glue through a coating line, uniformly coating, slightly drying, covering another layer of PET release film, and discharging air bubbles; step five, secondary stamping, namely putting the product coated for the second time into a stamping machine for secondary stamping, and completely attaching; step six, printing, namely performing corona treatment on the surfaces of the two layers of PET release films, and printing ink on the surfaces of the PET release films within minutes, wherein printing fonts are formulated according to user requirements, and the ink fastness needs to be checked after printing is completed; step seven, die cutting, namely putting the printed protective film product into a circular knife machine for die cutting and forming, wherein the die cutting shape is determined according to the shape of the liquid crystal display panel, and scratching and ink collapse are avoided in the die cutting process; and step eight, checking and packaging, namely, checking the quality of the protective film product after die cutting is finished, observing whether burrs and gaps exist on the edge, packaging after the checking is finished, and putting the protective film product into a package of a corresponding model to finish the production of the protective film.
Preferably, steps one to eight are all completed in a dust-free clean room.
Preferably, the PU adhesive in the second step can be replaced by a UV viscosity-reducing pressure-sensitive adhesive or a high-temperature-resistant pressure-sensitive adhesive according to the function of the protective film.
Preferably, the punching machine and the fillet machine in the third step, the fifth step and the seventh step all adopt a full-automatic working mode.
The positive progress effects of the invention are as follows: the protective film for the liquid crystal display and the preparation process thereof have the advantages of reasonable design, simple structure, excellent electrical insulation, high temperature resistance, friction resistance and good stability, can meet the requirements of different customers, not only can save the protective film attaching process, improve the efficiency and save the cost, but also can avoid the problem that the protective film falls off from the periphery of the film, and can be applied to special application fields such as high-temperature conditions, curved surface occasions and the like.
Drawings
FIG. 1 is a block diagram of the present invention.
FIG. 2 is a flow chart of the present invention.
Detailed Description
The following provides a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1 to 2, the protective film for liquid crystal display of the present invention comprises a first ink layer 1, a first PET (polyethylene terephthalate) release film 2, a silicone layer 3, a PU (polyurethane) adhesive layer 4, and a PET substrate 5, acrylic glue layer 6, prevent fish tail glue layer 7, the second PET is from type membrane 8, second printing ink layer 9, the bottom surface of first printing ink layer 1 links to each other with first PET from the top surface of type membrane 2, first PET links to each other from the bottom surface of type membrane 2 and the top surface of silica gel layer 3, the bottom surface of silica gel layer 3 links to each other with the top surface of PU glue layer 4, the bottom surface of PU glue layer 4 links to each other with the top surface of PET substrate 5, the bottom surface of PET substrate 5 links to each other with the top surface of acrylic glue layer 6, the bottom surface of acrylic glue layer 6 links to each other with the top surface of preventing fish tail glue layer 7, the bottom surface of preventing fish tail glue layer 7 links to each other from the top surface of type membrane 8 with the second PET, the second links to.
The PU adhesive layer 2 can be replaced by a UV (ultraviolet) viscosity-reducing pressure-sensitive adhesive layer or a high-temperature-resistant pressure-sensitive adhesive layer, so that the characteristics of the protective film for liquid crystal display are changed, and the production requirement is met.
The preparation process of the protective film for the liquid crystal display comprises the following production steps: adding raw materials, namely preparing a PET (polyethylene terephthalate) substrate, PU (polyurethane) glue, a PET release film, silica gel, acrylic glue, scratch-resistant glue, printing ink and the like as raw materials; step two, primary coating, namely, performing primary coating by using a PET substrate as a base film, coating PU glue and silica gel on one surface of the base film through a coating line, uniformly coating, slightly drying, covering a layer of PET release film on one side coated with the PU glue, and discharging intermediate bubbles; thirdly, one-time stamping, namely putting the covered raw materials into a stamping machine for first-time stamping to ensure that the raw materials are completely attached; step four, secondary coating, namely coating the PET substrate surface of the product subjected to the primary stamping for the second time, coating acrylic glue and scratch-resistant glue through a coating line, uniformly coating, slightly drying, covering another layer of PET release film, and discharging air bubbles; step five, secondary stamping, namely putting the product coated for the second time into a stamping machine for secondary stamping, and completely attaching; step six, printing, namely performing corona treatment on the surfaces of the two layers of PET release films, and printing ink on the surfaces of the PET release films within 5 minutes, wherein printing fonts are formulated according to user requirements, and the ink fastness needs to be checked after printing is completed; step seven, die cutting, namely putting the printed protective film product into a circular knife machine for die cutting and forming, wherein the die cutting shape is determined according to the shape of the liquid crystal display panel, and scratching and ink collapse are avoided in the die cutting process; and step eight, checking and packaging, namely, checking the quality of the protective film product after die cutting is finished, observing whether burrs and gaps exist on the edge, packaging after the checking is finished, and putting the protective film product into a package of a corresponding model to finish the production of the protective film.
Step one to step eight are all accomplished in dustless clean shop, can avoid like this that pollutants such as dust adhere to raw materials or protection film finished product, influence product quality.
The PU adhesive in the step two can be replaced by the UV viscosity-reducing pressure-sensitive adhesive or the high-temperature-resistant pressure-sensitive adhesive according to the function of the protective film, so that the requirements of different customers are met.
And step three, step five and step seven, wherein the punching machine and the fillet machine adopt full-automatic working modes, so that the efficiency can be improved, the labor cost can be reduced, and the production cost can be reduced.
The working principle of the invention is as follows: the protective film for the liquid crystal display is reasonable in design and simple in structure, and comprises a first ink layer, a first PET release film, a silica gel layer, a PU adhesive layer, a PET substrate, an acrylic adhesive layer, a scratch-proof adhesive layer, a second PET release film and a second ink layer, wherein the PET has excellent physical and mechanical properties in a wider temperature range, the long-term use temperature can reach 120 ℃, the electric insulation property is excellent, the electric property is still good even under high temperature and high frequency, the creep resistance, the fatigue resistance, the friction resistance and the size stability are good, the acrylic adhesive has the advantages of room temperature curing, convenience in operation, high bonding strength, quick positioning, high elasticity, no toxicity of a cured product and the like, the scratch-proof adhesive can improve the wear resistance, the PET release film as an isolation film has good adsorption property and laminating property, the PU adhesive can be replaced by a UV (ultraviolet) viscosity-reducing pressure-sensitive adhesive or a high temperature-resistant pressure sensitive adhesive according, the PU protective film, the UV anti-sticking protective film and the high-temperature resistant protective film can be respectively prepared according to different colloids. The PU protective film has the advantages of stable adhesive force, low climbing, low pollution, high stiffness and the like, the UV anti-sticking protective film has the advantages of high viscosity before UV, good adhesion, rapid viscosity reduction after UV irradiation, easy peeling and the like, the highest temperature resistance of the high-temperature resistant protective film can reach 220 ℃, and the high-temperature resistant protective film is designed in a thin mode and can be suitable for special application fields such as high-temperature conditions, curved surface occasions and the like. When the protective film for liquid crystal display is used, the first PET release film is torn down, the protective film is directly attached to the surface of the liquid crystal display panel through the attaching glue layer, the operation is simple, the protective film attaching process is saved, and the problem that the protective film falls off from the periphery of the film is avoided.
In conclusion, the protective film for the liquid crystal display and the preparation process thereof have the advantages of reasonable design, simple structure, excellent electrical insulation, high temperature resistance, friction resistance and good stability, can meet the requirements of different customers, not only can save the protective film attaching process, improve the efficiency and save the cost, but also can avoid the problem that the protective film falls off from the periphery of the film, and can be applied to special application fields such as high-temperature conditions, curved surface occasions and the like.
The above embodiments are described in further detail to solve the technical problems, technical solutions and advantages of the present invention, and it should be understood that the above embodiments are only examples of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a protection film for liquid crystal display, a serial communication port, it includes first printing ink layer, first PET is from the type membrane, the silica gel layer, the PU glue film, the PET substrate, the ya keli glue film, prevent the fish tail glue film, second PET is from the type membrane, second printing ink layer, the bottom surface on first printing ink layer links to each other with the top surface that first PET was from the type membrane, first PET is continuous with the top surface on silica gel layer from the bottom surface of type membrane, the bottom surface on silica gel layer links to each other with the top surface on PU glue film, the bottom surface on PU glue film links to each other with the top surface of PET substrate, the bottom surface of PET substrate links to each other with the top surface on ya keli glue film, the bottom surface on ya keli glue film links to each other with the top surface on fish tail glue film, the bottom surface on second was.
2. The protective film for liquid crystal display of claim 1, wherein the PU adhesive layer is replaced with a UV tack-reducing pressure sensitive adhesive layer or a high temperature resistant pressure sensitive adhesive layer.
3. The preparation process of the protective film for the liquid crystal display is characterized by comprising the following production steps of: adding raw materials, namely preparing a PET (polyethylene terephthalate) substrate, PU (polyurethane) glue, a PET release film, silica gel, acrylic glue, scratch-resistant glue, printing ink and the like as raw materials; step two, primary coating, namely, performing primary coating by using a PET substrate as a base film, coating PU glue and silica gel on one surface of the base film through a coating line, uniformly coating, slightly drying, covering a layer of PET release film on one side coated with the PU glue, and discharging intermediate bubbles; thirdly, one-time stamping, namely putting the covered raw materials into a stamping machine for first-time stamping to ensure that the raw materials are completely attached; step four, secondary coating, namely coating the PET substrate surface of the product subjected to the primary stamping for the second time, coating acrylic glue and scratch-resistant glue through a coating line, uniformly coating, slightly drying, covering another layer of PET release film, and discharging air bubbles; step five, secondary stamping, namely putting the product coated for the second time into a stamping machine for secondary stamping, and completely attaching; step six, printing, namely performing corona treatment on the surfaces of the two layers of PET release films, and printing ink on the surfaces of the PET release films within minutes, wherein printing fonts are formulated according to user requirements, and the ink fastness needs to be checked after printing is completed; step seven, die cutting, namely putting the printed protective film product into a circular knife machine for die cutting and forming, wherein the die cutting shape is determined according to the shape of the liquid crystal display panel, and scratching and ink collapse are avoided in the die cutting process; and step eight, checking and packaging, namely, checking the quality of the protective film product after die cutting is finished, observing whether burrs and gaps exist on the edge, packaging after the checking is finished, and putting the protective film product into a package of a corresponding model to finish the production of the protective film.
4. The process for producing a protective film for liquid crystal display according to claim 3, wherein the steps one to eight are performed in a clean room.
5. The process for preparing a protective film for liquid crystal display according to claim 3, wherein the PU adhesive in the second step is replaced with a UV tack-reducing pressure-sensitive adhesive or a high-temperature-resistant pressure-sensitive adhesive according to the function of the protective film.
6. The process for producing a protective film for liquid crystal displays according to claim 3, wherein the press and the rounding machine in the third, fifth and seventh steps are in a fully automatic mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810832218.1A CN110757902A (en) | 2018-07-26 | 2018-07-26 | Protective film for liquid crystal display and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810832218.1A CN110757902A (en) | 2018-07-26 | 2018-07-26 | Protective film for liquid crystal display and preparation process thereof |
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| Publication Number | Publication Date |
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| CN110757902A true CN110757902A (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810832218.1A Pending CN110757902A (en) | 2018-07-26 | 2018-07-26 | Protective film for liquid crystal display and preparation process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111952484A (en) * | 2020-06-29 | 2020-11-17 | 南京冠石科技股份有限公司 | Processing technology of flexible OLED device |
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| CN105196660A (en) * | 2015-09-21 | 2015-12-30 | 东莞市纳利光学材料有限公司 | Protective film capable of being formed by means of hot pressing and preparation method thereof |
| CN205590610U (en) * | 2016-02-23 | 2016-09-21 | 广州慧谷工程材料有限公司 | 2. 5D use thick type AB double faced adhesive tape with 3D tempering membrane |
| CN106046405A (en) * | 2016-05-27 | 2016-10-26 | 李炳恩 | UV hardening decorative film capable of being processed and formed deeply and preparation method of UV hardening decorative film |
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2018
- 2018-07-26 CN CN201810832218.1A patent/CN110757902A/en active Pending
Patent Citations (7)
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| JP2001262094A (en) * | 2000-03-17 | 2001-09-26 | Takashi Onoda | Multilayer adhesive film for protecting surface of articles and manufacturing method thereof |
| CN203093187U (en) * | 2013-01-23 | 2013-07-31 | 高荣康 | Anti-dropping protective film |
| CN104002532A (en) * | 2014-06-09 | 2014-08-27 | 苏州斯迪克新材料科技股份有限公司 | Transparent colored protective film and preparation method thereof |
| CN104845543A (en) * | 2014-12-31 | 2015-08-19 | 东莞市纳利光学材料有限公司 | High-transmittance protective film capable of automatically adjusting color and preparation method |
| CN105196660A (en) * | 2015-09-21 | 2015-12-30 | 东莞市纳利光学材料有限公司 | Protective film capable of being formed by means of hot pressing and preparation method thereof |
| CN205590610U (en) * | 2016-02-23 | 2016-09-21 | 广州慧谷工程材料有限公司 | 2. 5D use thick type AB double faced adhesive tape with 3D tempering membrane |
| CN106046405A (en) * | 2016-05-27 | 2016-10-26 | 李炳恩 | UV hardening decorative film capable of being processed and formed deeply and preparation method of UV hardening decorative film |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111952484A (en) * | 2020-06-29 | 2020-11-17 | 南京冠石科技股份有限公司 | Processing technology of flexible OLED device |
| CN111952484B (en) * | 2020-06-29 | 2022-06-28 | 南京冠石科技股份有限公司 | Processing technology of flexible OLED device |
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Application publication date: 20200207 |