CN111660653A - Method for manufacturing protective film - Google Patents
Method for manufacturing protective film Download PDFInfo
- Publication number
- CN111660653A CN111660653A CN201910170079.5A CN201910170079A CN111660653A CN 111660653 A CN111660653 A CN 111660653A CN 201910170079 A CN201910170079 A CN 201910170079A CN 111660653 A CN111660653 A CN 111660653A
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- CN
- China
- Prior art keywords
- protective film
- finished product
- manufacturing
- semi
- sheet
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Classifications
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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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0004—Cutting, tearing or severing, e.g. bursting; Cutter details
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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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/10—Removing layers, or parts of layers, mechanically or chemically
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines 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
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/001—General methods for coating; Devices therefor
- C03C17/002—General methods for coating; Devices therefor for flat glass, e.g. float glass
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/554—Wear resistance
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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
- B32B2315/00—Other materials containing non-metallic inorganic compounds not provided for in groups B32B2311/00 - B32B2313/04
- B32B2315/08—Glass
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a manufacturing method of a protective film, which comprises the following steps: cutting a web into a sheet; passing the sheet material through a processing means so that the surface of the sheet material is covered with a release layer to form a processed sheet material; forming a membrane from the processed sheet by a cutting means; forming a semi-finished product by injection molding of the membrane; and carrying out a finishing means on the semi-finished product to obtain a protective film finished product; therefore, a high-precision protective film finished product is formed through injection molding.
Description
Technical Field
The present invention relates to a manufacturing process, and more particularly, to a method for manufacturing a protective film.
Background
In recent years, electronic devices having a large screen, such as smart phones and tablet devices, are widely used, and screen protection stickers for protecting the screen are also in use, and now most of them are made of strengthened glass to increase the protection strength and wear resistance.
The manufacturing process of the general glass protection paste comprises the following steps: (1) cutting the glass; (2) edging and drilling the cut glass; (3) carrying out film washing; (4) the toughness of the glass is improved by using chemical liquid; (5) AS antifouling coating (Anti-Smudgecoating) was performed. That is, the general glass protection paste itself does not have the anti-fouling effect, and the anti-fouling effect needs to be increased by a coating method, but the coating film easily loses the effect gradually with the use time, and is easy to separate from the glass, so that the service life of the glass protection paste is shortened.
Furthermore, in order to make the user have better visual perception to enjoy the photos and videos displayed on the electronic device, some manufacturers have developed electronic devices with curved screens, however, when the user wants to paste the protection sticker on the electronic device with a curved screen to protect the screen, the screen often has a curvature relationship, so that the protection sticker cannot be completely attached to the screen, and even though the protection sticker is attached to the electronic device in a full-plane manner, a white edge is formed at the edge of the protection sticker.
In taiwan patent nos. M528872 and M519066, it is mentioned that the curved surface portion of the protection sticker is made by hot press molding to be effectively and completely attached to the screen; however, since the hot press molding is to apply an external force and temperature to the material by a press and a mold to plastically deform or separate the material, thereby obtaining a finished product having a desired shape and size, the precision of the finished product is easily affected by the application of the external force and temperature control, and thus the consistency of the quality and precision of each finished product cannot be ensured.
Disclosure of Invention
In order to solve the above problems, the present invention provides a method for manufacturing a protective film, which is capable of manufacturing a finished protective film with high precision and quality by injection molding.
An embodiment of the present invention provides a method for manufacturing a protective film, including the steps of: cutting a web into a sheet; passing the sheet material through a processing means so that the surface of the sheet material is covered with a release layer to form a processed sheet material; forming a membrane from the processed sheet by a cutting means; forming a semi-finished product by injection molding of the membrane; and performing a trimming process on the semi-finished product to obtain a protective film product.
In one embodiment, the processing sheet is cut to form a plurality of films and a plurality of positioning marks are formed on each film.
In one embodiment, the membrane is placed in a mold, and after the membrane is positioned by the positioning mark, a semi-finished product conforming to the shape of the mold is formed by injection molding.
In one embodiment, a plurality of positioning members are disposed in the mold, and each positioning member corresponds to each positioning mark.
In one embodiment, in the injection molding process, a pushing material is poured to enable the diaphragm to form a shape which is in accordance with the mold, and one side surface of the semi-finished product, which is provided with the release layer, is connected with the pushing material; and after the semi-finished product is subjected to a finishing means, removing the pushing material to form a finished product of the protective film.
In one embodiment, the cutting means cuts the processing sheet into the film by a laser cutting machine.
In one embodiment, the coil is made of a high-hardness and high-wear-resistance glass material.
In one embodiment, the processing means is a spraying process or a bonding process.
In one embodiment, the trimming means deburres the semi-finished product by a numerically controlled machine tool or a laser cutting machine.
Through the above, the invention makes the membrane into the finished product of the protective film through injection molding, can accurately control the injection speed and quality to obtain the finished product of the protective film with high precision, thereby overcoming the defect that the precision is easily influenced by external force and temperature in the existing hot press molding.
Moreover, the positioning mark is arranged on the diaphragm, so that the diaphragm can be positioned corresponding to the positioning piece in the die, the placing process can be quickly and simply finished, and the manufacturing operation time is shortened; and the positioning mark can provide a positioning reference during finishing operation so as to more accurately perform processing operation and form a high-precision protective film finished product.
In addition, the coil stock is made of high-hardness and high-wear-resistance glass material, so that extra film coating operation is not needed, and the problems that the existing strengthened glass protective film needs extra film coating procedure, cannot be durable and wear-resistant and is easy to fall off are solved.
In addition, the rough edges of the semi-finished product can be accurately removed through a finishing means, so that the precision of the size of the finished product of the protective film is effectively improved.
Drawings
FIG. 1 is a schematic flow diagram of the process of the present invention.
FIG. 2 is a schematic view of the processing of the sheet of the present invention into a semi-finished product.
Fig. 3 is a schematic view of a diaphragm of the present invention.
FIG. 4 is an enlarged schematic view of a second process step of the present invention.
Description of the reference numerals
Processed surface 51
Mold 60
Semi-finished product 70
First cutting step S1
First processing step S2
Cutting step S3
Second processing step S4
And a trimming step S5.
Detailed Description
To facilitate the explanation of the present invention, the central ideas shown in the above summary are shown in the following embodiments. Various objects in the embodiments are depicted in terms of scale, dimensions, deformation, or displacement suitable for illustration, rather than in terms of actual component proportions, as previously described.
Referring to fig. 1 to 4, the present invention provides a method for manufacturing a protective film, which obtains a finished protective film 10 through the following steps, wherein the finished protective film 10 is disposed on a screen or a back surface of an electronic device.
The manufacturing method of the protective film comprises the following steps:
first cutting step S1: cutting a web 20 into a sheet 30, the sheet 30 having oppositely disposed surfaces 31; wherein the coil stock 20 is made of high-hardness and high-abrasion-resistance glass material.
First processing step S2: the sheet material 30 is passed through a processing means, such as a spraying process or a laminating process, as shown in fig. 1, such that one surface 31 of the sheet material 30 is covered with a releasing layer 32 to form a processed sheet material 40.
A cutting step S3: forming a diaphragm 50 by a cutting means on the processing sheet 40, wherein the diaphragm 50 has two processing surfaces 51, the two processing surfaces 51 are equal to the two surfaces 31 of the sheet 30, and one processing surface 51 is provided with a release layer 32; in the embodiment of the present invention, the processing sheet 40 is cut into a plurality of films 50 by a cutting means, and a plurality of positioning marks 52 are formed on each film 50, wherein the cutting means is a laser cutting machine; each positioning mark 52 is in the form of a hole, each positioning mark 52 is divided into a main positioning hole 521 and a sub-positioning hole 522, the main positioning hole 521 is disposed through the membrane 50 and matches the positions of the camera hole and the fingerprint hole of each electronic device, and the sub-positioning hole 522 is disposed through the extending portions 53 extending on the left and right sides of each membrane 50, as shown in fig. 3.
Second processing step S4: placing the film 50 into a mold 60, wherein a plurality of positioning members 61 are arranged in the mold 60, each positioning member 61 corresponds to each positioning mark 52, and after the film 50 is positioned by the positioning marks 52 and the positioning members 61, a semi-finished product 70 conforming to the shape of the mold 60 is formed by injection molding; in the injection molding process, a pushing material 80 is injected toward the processing surface 51 of the membrane 50 having the releasing layer 32, the pushing material 80 is in a semi-solid state to push the membrane 50 to the bottom of the mold 60, so as to form a semi-finished product 70 conforming to the shape of the mold 60, and a side surface of the semi-finished product 70 having the releasing layer 32 is detachably connected to the pushing material 80, as shown in fig. 1 and 4.
Trimming step S5: subjecting the semi-finished product 70 to a trimming means to remove burrs of the semi-finished product 70 and remove the extension 53; then, after the semi-finished product 70 is trimmed, the pusher 80 is removed from the releasing layer 32 of the semi-finished product 70 to obtain the finished protective film 10. In the embodiment of the present invention, the trimming means performs the deburring and extension 53 removing operations on the semi-finished product 70 by using a numerical control machine tool or a laser cutting machine.
Through the above, the present invention can achieve the following effects:
firstly, the injection speed and quality of the film 50 can be precisely controlled by injection molding, so as to obtain the finished protective film 10 with high precision and consistent quality.
Secondly, the positioning mark 52 is arranged on the membrane 50, and the membrane can be quickly positioned with the positioning piece 61 in the die 60, so that the placing process can be quickly and simply finished, and the manufacturing operation time is shortened; and the positioning mark 52 can provide a positioning reference during the trimming operation to perform the machining operation more precisely, thereby forming the protective film finished product 10 with high precision.
The coil stock 20 is made of high-hardness and high-abrasion-resistance glass materials, so that the problem of anti-fouling coating falling can be avoided without additionally performing coating operation; therefore, the antifouling and wear-resistant effects are effectively achieved, and the service life of the protective film finished product 10 is prolonged.
In addition, the rough edges of the semi-finished product 70 can be accurately removed by the trimming means, so that the dimensional accuracy of the finished protective film product 10 is effectively improved.
It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all 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.
Claims (9)
1. A method for manufacturing a protective film is characterized by comprising the following steps:
cutting a web into a sheet;
passing the sheet through a processing means so that the surface of the sheet is covered with a releasing layer to form a processed sheet;
forming a membrane from the processed sheet by a cutting means;
forming a semi-finished product by injection molding the membrane; and
the semi-finished product is trimmed to obtain a protective film product.
2. The method for manufacturing a protective film according to claim 1, wherein the processing sheet is formed into a plurality of films by the cutting means and a plurality of positioning marks are formed for each film.
3. The method for manufacturing a protective film according to claim 2, wherein the film is placed in a mold, and after being positioned by the positioning marks, the semi-finished product conforming to the shape of the mold is formed by injection molding.
4. The method for manufacturing a passivation film according to claim 3, wherein a plurality of positioning elements are disposed in the mold, and each positioning element corresponds to each positioning mark.
5. The method for manufacturing a protective film according to claim 3, wherein a pusher is injected during the injection molding process to form the film into a shape conforming to the mold, the semi-finished product is provided with the releasing layer, and one side surface of the releasing layer is detachably connected to the pusher; after the semi-finished product passes through the finishing means, the pushing material is removed so as to form the finished product of the protective film.
6. The method for manufacturing a protective film according to claim 1 or 2, wherein the cutting means cuts the work sheet into the film pieces by a laser cutting machine.
7. The method of claim 1, wherein the web is a high-hardness, high-wear-resistant glass-like material.
8. The method for manufacturing a protective film according to claim 1, wherein the processing means is a spray processing or a bonding processing.
9. The method for manufacturing a protective film according to claim 1 or 5, wherein the trimming means debugs the semi-finished product by a numerical control machine tool or a laser cutting machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910170079.5A CN111660653A (en) | 2019-03-07 | 2019-03-07 | Method for manufacturing protective film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910170079.5A CN111660653A (en) | 2019-03-07 | 2019-03-07 | Method for manufacturing protective film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111660653A true CN111660653A (en) | 2020-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910170079.5A Pending CN111660653A (en) | 2019-03-07 | 2019-03-07 | Method for manufacturing protective film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111660653A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104742470A (en) * | 2015-03-25 | 2015-07-01 | 安徽开润股份有限公司 | Structure of two-sided and four-sided arc protective film and preparing process of arc protective film |
| CN107263798A (en) * | 2017-07-27 | 2017-10-20 | 哈尔滨奥瑞德光电技术有限公司 | A kind of injection moulding method of 3D thin slices |
| CN108189374A (en) * | 2017-12-27 | 2018-06-22 | 深圳市精益精科技有限公司 | Curved surface protective film processing and forming technology and curved surface protective film |
| CN108274866A (en) * | 2017-12-30 | 2018-07-13 | 广州华夏职业学院 | A kind of thin-walled 3D curved surface combined housings and preparation method thereof |
-
2019
- 2019-03-07 CN CN201910170079.5A patent/CN111660653A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104742470A (en) * | 2015-03-25 | 2015-07-01 | 安徽开润股份有限公司 | Structure of two-sided and four-sided arc protective film and preparing process of arc protective film |
| CN107263798A (en) * | 2017-07-27 | 2017-10-20 | 哈尔滨奥瑞德光电技术有限公司 | A kind of injection moulding method of 3D thin slices |
| CN108189374A (en) * | 2017-12-27 | 2018-06-22 | 深圳市精益精科技有限公司 | Curved surface protective film processing and forming technology and curved surface protective film |
| CN108274866A (en) * | 2017-12-30 | 2018-07-13 | 广州华夏职业学院 | A kind of thin-walled 3D curved surface combined housings and preparation method thereof |
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Application publication date: 20200915 |