CN107364065B - Integrated forming processing technology of curved glass screen protective film and protective film thereof - Google Patents
Integrated forming processing technology of curved glass screen protective film and protective film thereof Download PDFInfo
- Publication number
- CN107364065B CN107364065B CN201710693685.6A CN201710693685A CN107364065B CN 107364065 B CN107364065 B CN 107364065B CN 201710693685 A CN201710693685 A CN 201710693685A CN 107364065 B CN107364065 B CN 107364065B
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- China
- Prior art keywords
- curved glass
- glass screen
- self
- sensitive adhesive
- protective film
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Links
- 239000011521 glass Substances 0.000 title claims abstract description 61
- 230000001681 protective effect Effects 0.000 title claims abstract description 35
- 238000005516 engineering process Methods 0.000 title claims abstract description 9
- 238000012545 processing Methods 0.000 title claims abstract description 8
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims abstract description 39
- 238000001179 sorption measurement Methods 0.000 claims abstract description 38
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 29
- 239000010703 silicon Substances 0.000 claims abstract description 29
- 239000010410 layer Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000002347 injection Methods 0.000 claims abstract description 5
- 239000007924 injection Substances 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000001746 injection moulding Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 238000000465 moulding Methods 0.000 claims description 2
- 238000004073 vulcanization Methods 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims 8
- 238000010521 absorption reaction Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000000741 silica gel Substances 0.000 description 4
- 229910002027 silica gel Inorganic materials 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000005341 toughened glass Substances 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- 239000003522 acrylic cement Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000013003 hot bending Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/326—Applications of adhesives in processes or use of adhesives in the form of films or foils for bonding electronic components such as wafers, chips or semiconductors
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/122—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/10—Presence of inorganic materials
- C09J2400/14—Glass
- C09J2400/143—Glass in the substrate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2467/00—Presence of polyester
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2483/00—Presence of polysiloxane
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses an integral forming processing technology of a curved glass screen protective film and the protective film, comprising the following steps that A, the curved glass screen is placed in a die cavity of an injection molding machine die, and a gap is reserved on the contact surface of the curved glass screen and a display screen; B. injecting a self-adsorption solvent-free organic silicon pressure-sensitive adhesive into a mold cavity through a liquid injection, so that the self-adsorption solvent-free organic silicon pressure-sensitive adhesive fully fills a gap in the mold cavity to wrap one surface of the curved glass screen, which contacts the display screen, and forming a self-adsorption solvent-free organic silicon pressure-sensitive adhesive layer; C. vulcanizing and forming the curved glass screen and the self-adsorption solvent-free organic silicon pressure-sensitive adhesive; D. and opening the die to take out the molded finished product, and cooling to normal temperature. The finished product of the invention can lead the display screen of the digital product to have better and more comprehensive protection effect, especially for the curved screen product, and simultaneously the process steps of the invention can solve the problems of complicated and complex prior process, deviation of attaching size and the like, and improve the product yield.
Description
Technical Field
The invention relates to the technical field of mobile phone protective films, in particular to an integrated forming processing technology of a curved glass screen protective film and the protective film thereof.
Background
The mobile phone film is also called as a mobile phone beauty film and a mobile phone protective film, and is a cold mounting film which can be used for mounting a mobile phone body and protecting a screen. According to the application, the method can be divided into: a mobile phone screen protective film, a mobile phone body protective film, a peep-proof film, a mirror film, an AR film, a frosted film, a scratch-proof protective film, a mobile phone body scratch-proof protective film and a mobile phone body decorative protective film; currently, the main stream of the market is a protective film of PET material and a glass protective film. But the appearance of the electronic product is changed greatly because the updating of the current electronic product is quick.
Many products in the current market are cambered screens, and the development trend is that the products range from 2.5D to 3D. The common toughened glass film can only be attached to the front surface and the plane, and cannot play a good role in protecting the bent part. In order to solve the problem, a lot of manufacturers previously coated and compounded with organosilicon and acrylic adhesive on two sides of a PET film respectively, heated and vulcanized to form double-sided adhesive, cut into the size of a mobile phone screen through a die cutting process, then attach the mobile phone screen to glass, and finally attach the glass to the mobile phone screen again, so that the effect is not ideal, the cambered surface edge is easy to warp and wrinkle, bubbles, snow spots and the like are attached, and the reject ratio is too high, as shown in fig. 1.
Disclosure of Invention
In order to solve the problems, the invention provides an integrated forming processing technology of a curved glass screen protective film and the protective film thereof, and a display screen of a digital product plays a better and more comprehensive protective role, and particularly for the product of the curved screen, the problems of complicated and complex existing technology, deviation of attaching size and the like are solved, and the product yield is improved.
In order to achieve the above purpose, the invention adopts the following technical scheme: an integrated forming processing technology of a curved glass screen protective film comprises the following steps:
s1, placing a curved glass screen in a die cavity of an injection molding machine die, and reserving a gap on the surface of the curved glass screen, which is in contact with a display screen;
s2: injecting a self-adsorption solvent-free organic silicon pressure-sensitive adhesive into a mold cavity through a liquid injection, so that the self-adsorption solvent-free organic silicon pressure-sensitive adhesive fully fills a gap in the mold cavity to wrap one surface of the curved glass screen, which contacts the display screen, and forming a self-adsorption solvent-free organic silicon pressure-sensitive adhesive layer;
s3: vulcanizing and forming the curved glass screen and the self-adsorption solvent-free organic silicon pressure-sensitive adhesive;
s4: and opening the die to take out the molded finished product, and cooling to normal temperature.
Further, in step S1, the thickness of the gap left on the surface of the curved glass screen, which contacts the display screen, is 50-150um.
Further, in step S3, the vulcanization molding temperature is 130℃and the time is 35S.
Further, the self-adsorption solvent-free organosilicon pressure-sensitive adhesive has a brookfield viscosity of 1000-20000cps.
Further, the Shore hardness of the self-adsorption solvent-free organic silicon pressure-sensitive adhesive is lower than 10A.
Further, the self-adsorption solvent-free organic silicon pressure-sensitive adhesive is silica gel.
In order to achieve the above purpose, another technical scheme adopted by the invention is as follows: the utility model provides a curved surface glass screen protection film, includes curved surface glass screen and self-adsorption solvent-free organosilicon pressure sensitive adhesive layer, curved surface glass screen's both sides are crooked to one side that contacts the display screen, self-adsorption solvent-free organosilicon pressure sensitive adhesive layer sets up in curved surface glass screen one side that contacts the display screen to with curved surface glass screen integrated into one piece.
Further, the self-adsorption solvent-free organosilicon pressure-sensitive adhesive layer has a brookfield viscosity of 1000-20000cps.
Further, the Shore hardness of the self-adsorption solvent-free organic silicon pressure-sensitive adhesive layer is lower than 10A.
Further, the self-adsorption solvent-free organic silicon pressure-sensitive adhesive is silica gel.
The invention has the beneficial effects that: according to the invention, after the self-adsorption solvent-free organic silicon pressure-sensitive adhesive and curved glass are integrally vulcanized and formed, the coating process in the prior art is reduced, a great deal of manpower and material resources are saved, the screen can still be bonded by 100% even under the condition that the glass is uneven in thickness or inaccurate in size after hot bending, the surface of the solvent-free organic silicon pressure-sensitive adhesive with the self-adsorption function contacting the display screen is matched with the screen by 100%, so that the defective rate in bonding application is extremely low, and meanwhile, the self-adsorption solvent-free organic silicon pressure-sensitive adhesive is adopted, so that the pollution and waste to the environment are reduced, and the environment-friendly requirement and the cost are met.
Drawings
FIG. 1 is a schematic diagram of an assembly process structure of a conventional curved glass screen protective film;
fig. 2 is a schematic structural view of the present invention.
Detailed Description
The invention is further illustrated by the following specific examples.
The embodiment discloses an integrated forming processing technology of a curved glass screen protective film, which comprises the following steps:
s1, placing a curved glass screen 1 in a die cavity of a die of an injection molding machine, and reserving a gap on the surface, which is in contact with a display screen, of the curved glass screen 1, wherein the thickness of the gap is 50-150 mu m, the thickness of glue injection is selected according to the design requirement of a protection screen, the size of the die cavity is completely matched with the size of a digital product screen to be attached, and the curved glass screen 1 is subjected to tempering treatment after being heated and bent;
s2: injecting a self-adsorption solvent-free organic silicon pressure-sensitive adhesive into a mold cavity through a liquid injection, so that the self-adsorption solvent-free organic silicon pressure-sensitive adhesive fully fills a gap in the mold cavity to wrap and cover one surface of the curved glass screen 1, which is contacted with the display screen, so as to form a self-adsorption solvent-free organic silicon pressure-sensitive adhesive layer 2;
s3: vulcanizing and forming the curved glass screen 1 and the self-adsorption solvent-free organic silicon pressure-sensitive adhesive, wherein the self-adsorption solvent-free organic silicon pressure-sensitive adhesive adopts silica gel, the Brookfield viscosity of the silica gel is between 1000 and 20000cps, the Shore hardness is smaller than 10A, the fluidity is excellent, one surface of the curved glass screen 1, which is contacted with the display screen, can be effectively covered and wrapped, can be vulcanized with the curved glass screen 1 at a high temperature of 130 ℃ for 35 seconds, and can keep strong adsorption force without degumming;
s4: and opening the die to take out the molded finished product, and cooling to normal temperature.
The finished product is an integrally formed structure of a curved glass screen 1 protective film as shown in fig. 2, and comprises the curved glass screen 1 and a self-adsorption solvent-free organic silicon pressure-sensitive adhesive layer 2, wherein two sides of the curved glass screen 1 are bent towards one side contacting the display screen, the self-adsorption solvent-free organic silicon pressure-sensitive adhesive layer 2 is arranged on one side of the curved glass screen 1 contacting the display screen and is integrally formed with the curved glass screen 1, and one side of the curved glass screen 1 and one side of the self-adsorption solvent-free organic silicon pressure-sensitive adhesive layer 2 formed can effectively repair the non-planarity of the glass screen, so that 100% lamination with the display screen is ensured.
Compared with the traditional toughened glass film, the curved glass screen protective film produced by the method has the following comprehensive comparison:
the above embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the design of the present invention.
Claims (10)
1. An integrated forming processing technology of a curved glass screen protective film is characterized by comprising the following steps: placing the curved glass screen in a die cavity of a die of an injection molding machine, and leaving a gap on the surface of the curved glass screen, which is in contact with the display screen; b: injecting the self-adsorption solvent-free organic silicon pressure-sensitive adhesive into the mold cavity through the liquid injection, so that the self-adsorption solvent-free organic silicon pressure-sensitive adhesive fully fills the gaps in the mold cavity to wrap and cover one surface of the curved glass screen, which is contacted with the display screen, so as to form a self-adsorption solvent-free organic silicon pressure-sensitive adhesive layer; c: vulcanizing and forming the curved glass screen and the self-adsorption solvent-free organic silicon pressure-sensitive adhesive; d: and opening the die to take out the molded finished product, and cooling to normal temperature.
2. The process for integrally forming a protective film for a curved glass screen according to claim 1, wherein in the step a, the thickness of the gap left on the surface of the curved glass screen in contact with the display screen is 50-150 μm.
3. The process for integrally forming a protective film for a curved glass screen according to claim 1, wherein in the step C, the vulcanization molding is performed at 130 ℃ for 35 seconds.
4. The process for integrally forming a protective film for a curved glass screen according to claim 1, wherein the self-adsorption solvent-free silicone pressure-sensitive adhesive has a brookfield viscosity of 1000-20000cps.
5. The process for integrally forming a curved glass screen protective film according to claim 1, wherein the self-adsorption solvent-free silicone pressure-sensitive adhesive has a shore hardness of less than 10A.
6. The process for integrally forming a protective film for a curved glass screen according to any one of claims 1,4 and 5, wherein said self-adsorption solvent-free silicone pressure-sensitive adhesive is a silicone gel.
7. The curved glass screen protective film prepared by adopting the process according to any one of claims 1 to 6, which is characterized by comprising a curved glass screen and a self-adsorption solvent-free organic silicon pressure-sensitive adhesive layer, wherein two sides of the curved glass screen are bent towards one side contacting the display screen, and the self-adsorption solvent-free organic silicon pressure-sensitive adhesive layer is arranged on one side of the curved glass screen contacting the display screen and is integrally formed with the curved glass screen.
8. The curved glass screen protective film according to claim 7, wherein the self-adsorption solvent-free silicone pressure sensitive adhesive layer has a brookfield viscosity of 1000-20000cps.
9. The integrally formed structure of a curved glass screen protective film according to claim 7, wherein the self-absorption solvent-free silicone pressure-sensitive adhesive layer has a shore hardness of less than 10A.
10. The curved glass screen protective film according to any one of claims 7-9, wherein the self-absorbing solventless silicone pressure sensitive adhesive is a silicone gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710693685.6A CN107364065B (en) | 2017-08-14 | 2017-08-14 | Integrated forming processing technology of curved glass screen protective film and protective film thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710693685.6A CN107364065B (en) | 2017-08-14 | 2017-08-14 | Integrated forming processing technology of curved glass screen protective film and protective film thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN107364065A CN107364065A (en) | 2017-11-21 |
| CN107364065B true CN107364065B (en) | 2023-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710693685.6A Active CN107364065B (en) | 2017-08-14 | 2017-08-14 | Integrated forming processing technology of curved glass screen protective film and protective film thereof |
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| Country | Link |
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| CN (1) | CN107364065B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110271135A (en) * | 2018-03-14 | 2019-09-24 | 中兴通讯股份有限公司 | Glass assembly production method, glass assembly and display screen |
| CN109727527B (en) * | 2019-01-21 | 2021-08-10 | 霸州市云谷电子科技有限公司 | Protective film for special-shaped display panel, attaching method of protective film and special-shaped display panel |
| CN114619608A (en) * | 2022-04-19 | 2022-06-14 | 吴秀兰 | Forming method of electronic equipment protective film and electronic equipment protective film |
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