CN110699002A - Waterproof breathable film for camera module Holder leakage hole and production method - Google Patents
Waterproof breathable film for camera module Holder leakage hole and production method Download PDFInfo
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- CN110699002A CN110699002A CN201910980156.3A CN201910980156A CN110699002A CN 110699002 A CN110699002 A CN 110699002A CN 201910980156 A CN201910980156 A CN 201910980156A CN 110699002 A CN110699002 A CN 110699002A
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- breathable
- film
- layer
- waterproof
- double
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 239000010410 layer Substances 0.000 claims abstract description 42
- 239000002344 surface layer Substances 0.000 claims abstract description 22
- 239000012790 adhesive layer Substances 0.000 claims abstract description 21
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 17
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 17
- 239000000853 adhesive Substances 0.000 claims abstract description 4
- 230000001070 adhesive effect Effects 0.000 claims abstract description 4
- 229920006267 polyester film Polymers 0.000 claims description 15
- 238000013329 compounding Methods 0.000 claims description 9
- 238000007731 hot pressing Methods 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 8
- 239000002390 adhesive tape Substances 0.000 claims description 7
- 239000012528 membrane Substances 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- 238000005406 washing Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- 230000002265 prevention Effects 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 4
- 238000009423 ventilation Methods 0.000 abstract description 4
- 239000000428 dust Substances 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 3
- 229920002799 BoPET Polymers 0.000 abstract 1
- 239000005041 Mylar™ Substances 0.000 abstract 1
- 239000005020 polyethylene terephthalate Substances 0.000 abstract 1
- 229920000139 polyethylene terephthalate Polymers 0.000 abstract 1
- 230000035699 permeability Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Images
Classifications
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- 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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/29—Laminated material
-
- 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
- C09J2301/16—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer
- C09J2301/162—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer the carrier being a laminate constituted by plastic layers only
-
- 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
- C09J2427/00—Presence of halogenated polymer
- C09J2427/006—Presence of halogenated polymer 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
- C09J2467/006—Presence of polyester in the substrate
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Camera Bodies And Camera Details Or Accessories (AREA)
Abstract
The invention belongs to the field of camera modules, and discloses a waterproof breathable film of a camera module Holder leakage hole and a production method thereof, wherein the waterproof breathable film comprises a double-sided adhesive layer, a breathable bottom layer, a waterproof breathable layer and a surface layer (double-sided adhesive and Mylar) which are sequentially stacked from inside to outside; hollow air holes are arranged at the corresponding positions of the surface layer and the double-sided adhesive layer; the waterproof breathable layer is a PTFE film; the breathable bottom layer is a PET breathable film; the sum of the thicknesses of the waterproof breathable layer and the breathable bottom layer is 0.03-0.2 mm. The waterproof breathable film has good waterproof and breathable properties, can be suitable for a centrifugal washing process in a production process, plays a good waterproof protection role, has a good sealing and waterproof effect, does not need to be torn off after centrifugal washing, plays the functions of dust prevention, water prevention, ventilation and wear resistance protection in the use process of the camera module, and has a good use effect.
Description
Technical Field
The invention relates to the field of camera modules, in particular to a waterproof breathable film for a Holder leakage hole of a camera module and a production method thereof.
Background
With the development of technology and multimedia technology, the application range of camera modules is gradually expanded, and the camera modules are widely applied to digital cameras, digital image recorders, mobile phones, monitors and other electronic products with a photographing function. However, the lens in the conventional camera module is exposed in the air during the production and use processes, the optical performance and the mechanical performance are both reduced, and the service life of the camera module is seriously shortened. Therefore, the camera module protective film is produced.
Meanwhile, with the maturity of mobile phone technology, many existing mobile phone camera modules are required to have waterproof performance. However, the Holder leakage hole (or escape hole) of the camera module needs to have ventilation performance in terms of technical requirements. The existing camera module production mode is that, in the camera module production process, the seal plug or airtight waterproof membrane is used to seal the Holder leakage hole, then the centrifugal water washing operation is carried out, the baking and drying are carried out again, and finally the seal plug or airtight waterproof membrane is removed for installation and use. This mode is in the centrifugation washing in-process on the one hand, and Holder leaks the hole position and has into water and steam entering, influences the quality of camera module, and on the other hand step is loaded down with trivial details, and the Holder of the camera module after the production is accomplished leaks the hole and also does not possess waterproof function.
Disclosure of Invention
In order to solve the technical problem, the invention provides a waterproof breathable film for a Holder leakage hole of a camera module and a production method thereof, and the waterproof breathable film is compounded in multiple layers, so that the problems that the surface of the Holder leakage hole of the existing camera module is not provided with the waterproof breathable film and the waterproof performance is poor are solved.
In order to achieve the purpose, the technical scheme of the invention is as follows: a waterproof breathable film for a Holder leakage hole of a camera module comprises a surface layer, a waterproof breathable layer, a breathable bottom layer and a double-sided adhesive layer; the double-sided adhesive layer, the breathable bottom layer, the waterproof breathable layer and the surface layer are sequentially laminated and compounded from inside to outside; hollow air holes are formed in the corresponding positions of the surface layer and the double-sided adhesive layer; the waterproof breathable layer is a PTFE film; the breathable bottom layer is a PET breathable film; the sum of the thicknesses of the waterproof breathable layer and the breathable bottom layer is 0.03-0.2 mm.
As a preferable aspect of the present invention, the surface layer includes a polyester film and a base film; the polyester film is compounded on the outer surface of the base film; the inner surface of the base film is coated with an adhesive.
In a preferred embodiment of the present invention, the sum of the thicknesses of the waterproof breathable layer and the breathable bottom layer is 0.05 mm.
In a preferable embodiment of the present invention, the thickness of the polyester film is 0.02 to 0.03mm, and the thickness of the base film is 0.05 to 0.1 mm.
In a preferred embodiment of the present invention, the thickness of the polyester film is 0.025mm, and the thickness of the base film is 0.08 mm.
As a preferable scheme of the invention, the double-sided adhesive layer is a double-sided adhesive tape, and the thickness of the double-sided adhesive tape is 0.08 mm.
A production method of a waterproof breathable film of a camera module Holder leakage hole comprises the following steps:
step 1, carrying out hot-pressing compounding on a PTFE film and a PET breathable film, wherein the hot-pressing temperature is 50-80 ℃, and is 50 +/-10 kg/cm2Forming a composite membrane under the pressure state of (1);
and 3, compounding the surface layer, the composite film and the double-sided adhesive layer in a laminating order to form a finished film.
Through the technical scheme, the technical scheme of the invention has the beneficial effects that: the waterproof breathable film disclosed by the invention is reasonable in structure, simple in production method, high in productivity and low in production cost, can be applied to a Holder leakage hole of a camera module, can play a good role in protection, has good waterproof and breathable properties, can be applied to a centrifugal washing process in a production process, plays a good role in waterproof protection, has a good sealing and waterproof effect, does not need to be torn off after centrifugal washing, and plays a role in dust prevention, water prevention, ventilation and wear resistance protection in the use process of the camera module, and has a good use effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of the present invention.
The corresponding part names indicated by the numbers and letters in the drawings:
1. surface layer 2, waterproof breathable layer 3, breathable bottom layer
4. 5, air holes on the double-sided adhesive layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
With reference to fig. 1, the invention discloses a waterproof and breathable film for a Holder leakage hole of a camera module, which comprises a surface layer 1, a waterproof and breathable layer 2, a breathable bottom layer 3 and a double-sided adhesive layer 4. The surface layer 1, the waterproof breathable layer 2, the breathable bottom layer 3 and the double-sided adhesive layer 4 are sequentially laminated and compounded from inside to outside. The waterproof breathable layer 2 is a PTFE film; the breathable bottom layer 3 is a PET breathable film. The sum of the thicknesses of the waterproof breathable layer 2 and the breathable bottom layer 3 is 0.03-0.2 mm. The waterproof breathable layer 2 and the breathable bottom layer 3 are compounded by hot pressing, and the formed composite film is the functional film layer. The PTFE film and the PET breathable film have good synergistic effect. Micropores are densely distributed on the PTFE film. In the gas state, the gas-state molecules (including gas-state water molecules) of the air are very fine and can smoothly permeate into the PTFE film to the other side according to the principle of capillary motion, so that the air permeability phenomenon is generated; when the gaseous water is condensed into liquid water mist or water drops, the water particles become large and cannot pass through micropores of the PTFE film, and water molecules cannot smoothly separate from the water drops or permeate to the other side due to the action of the surface tension of the water mist or the water drops (mutual pulling and balancing among the water molecules), so that the water mist has a waterproof function. Therefore, the PTFE film has waterproof and air-permeable properties. And the aperture ratio PTFE film on PET ventilated membrane surface is big, can breathe freely to do not have good waterproof performance, the PET ventilated membrane plays the supporting role, improves the intensity of PTFE film, simultaneously with PTFE film hot pressing complex back, can block the gas permeability of adjustable complex film to the part micropore of PTFE film. The air permeability of the present invention can be controlled by adjusting the thickness of the PTFE film and the PET breathable film during use. Therefore, the composite film has the advantages of waterproof and air-permeable performance, good mechanical strength, difficult damage, adjustable air permeability and good adaptability. Preferably, the sum of the thicknesses of the waterproof breathable layer 2 and the breathable bottom layer 3 is 0.05 mm.
In order to exert the waterproof and breathable functions, the hollow-out air holes 5 are arranged at the corresponding positions of the surface layer 1 and the double-sided adhesive layer 4. When the installation is carried out, the air holes 5 correspond to the leakage holes. Specifically, the surface layer 1 includes a polyester film and a base film; the polyester film is compounded on the outer surface of the base film; the inner surface of the base film is coated with an adhesive. The polyester film has good mechanical property, high toughness, good wear resistance, high temperature resistance, low temperature resistance, chemical resistance and oil resistance. The polyester film is positioned on the outer surface of the surface layer 1, so that the waterproof breathable film has good surface performance. The base film is essentially a double-sided tape, one side of which is bonded and compounded with the polyester film, and the other side is used for being bonded and compounded with the waterproof breathable layer 2. Preferably, the thickness of the polyester film is 0.02 to 0.03mm, and the thickness of the base film is 0.05 to 0.1 mm. Further preferably, the thickness of the polyester film is 0.025mm, and the thickness of the base film is 0.08 mm. The double-sided adhesive layer 4 is a double-sided adhesive tape, and the thickness of the double-sided adhesive tape is 0.08 mm.
The production method of the waterproof breathable film comprises the following steps:
step 1, carrying out hot-pressing compounding on a PTFE film and a PET breathable film, wherein the hot-pressing temperature is 50-80 ℃, and is 50 +/-10 kg/cm2Under a pressure condition of (3), a composite film is formed.
And step 2, respectively punching air holes 5 on the surface layer 1 and the double-sided adhesive layer 4.
And 3, compounding the surface layer 1, the composite film and the double-sided adhesive layer 4 in a laminating sequence, wherein the compounding is bonding compounding without hot pressing and can be realized by a conventional adhesive tape or protective film compounding method to form a finished film.
Through the specific embodiment, the beneficial effects of the invention are as follows: the waterproof breathable film disclosed by the invention is reasonable in structure, simple in production method, high in productivity and low in production cost, can be applied to a Holder leakage hole of a camera module, can play a good role in protection, has good waterproof and breathable properties, can be applied to a centrifugal washing process in a production process, plays a good role in waterproof protection, has a good sealing and waterproof effect, does not need to be torn off after centrifugal washing, and plays a role in dust prevention, water prevention, ventilation and wear resistance protection in the use process of the camera module, and has a good use effect.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A waterproof breathable film for a Holder leakage hole of a camera module is characterized by comprising a surface layer, a waterproof breathable layer, a breathable bottom layer and a double-sided adhesive layer; the double-sided adhesive layer, the breathable bottom layer, the waterproof breathable layer and the surface layer are sequentially laminated and compounded from inside to outside; hollow air holes are formed in the corresponding positions of the surface layer and the double-sided adhesive layer; the waterproof breathable layer is a PTFE film; the breathable bottom layer is a PET breathable film; the sum of the thicknesses of the waterproof breathable layer and the breathable bottom layer is 0.03-0.2 mm.
2. The waterproof and breathable film for a camera module Holder leakage hole of claim 1, wherein the surface layer comprises a polyester film and a base film; the polyester film is compounded on the outer surface of the base film; the inner surface of the base film is coated with an adhesive.
3. The waterproof and breathable film for a camera module Holder leak hole of claim 1, wherein the sum of the thicknesses of the waterproof and breathable layer and the breathable bottom layer is 0.05 mm.
4. The waterproof and breathable film for the Holder leakage hole of the camera module according to claim 2, wherein the thickness of the polyester film is 0.02-0.03mm, and the thickness of the base film is 0.05-0.1 mm.
5. The waterproof and breathable film for a camera module Holder leakage hole of claim 4, wherein the thickness of the polyester film is 0.025mm, and the thickness of the base film is 0.08 mm.
6. The waterproof and breathable film for the Holder leakage hole of the camera module according to claim 4, wherein the double-sided adhesive layer is a double-sided adhesive tape, and the thickness of the double-sided adhesive tape is 0.08 mm.
7. A production method of a waterproof breathable film of a camera module Holder leakage hole is characterized by comprising the following steps:
step 1, carrying out hot-pressing compounding on a PTFE film and a PET breathable film, wherein the hot-pressing temperature is 50-80 ℃, and is 50 +/-10 kg/cm2Forming a composite membrane under the pressure state of (1);
step 2, respectively punching air holes on the surface layer and the double-sided adhesive layer;
and 3, compounding the surface layer, the composite film and the double-sided adhesive layer in a laminating order to form a finished film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910980156.3A CN110699002A (en) | 2019-10-15 | 2019-10-15 | Waterproof breathable film for camera module Holder leakage hole and production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910980156.3A CN110699002A (en) | 2019-10-15 | 2019-10-15 | Waterproof breathable film for camera module Holder leakage hole and production method |
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| Publication Number | Publication Date |
|---|---|
| CN110699002A true CN110699002A (en) | 2020-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910980156.3A Pending CN110699002A (en) | 2019-10-15 | 2019-10-15 | Waterproof breathable film for camera module Holder leakage hole and production method |
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| CN (1) | CN110699002A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111941977A (en) * | 2020-08-07 | 2020-11-17 | 常州浩文塑料新材料有限公司 | Waterproof breathable film and production process thereof |
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|---|---|---|---|---|
| CN105599405A (en) * | 2015-12-15 | 2016-05-25 | 天津日津科技股份有限公司 | New waterproof breathable composite membrane |
| CN108949058A (en) * | 2018-08-01 | 2018-12-07 | 东莞蒲微防水透气膜材料有限公司 | A kind of waterproof and breathable membrane module and preparation method thereof |
| CN208814940U (en) * | 2018-08-01 | 2019-05-03 | 东莞蒲微防水透气膜材料有限公司 | A kind of waterproof and breathable membrane module |
| WO2019098336A1 (en) * | 2017-11-17 | 2019-05-23 | 日東電工株式会社 | Gas processing member |
| CN211255796U (en) * | 2019-10-15 | 2020-08-14 | 苏州优派克电子科技有限公司 | Waterproof ventilated membrane of camera module Holder leakage hole |
-
2019
- 2019-10-15 CN CN201910980156.3A patent/CN110699002A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105599405A (en) * | 2015-12-15 | 2016-05-25 | 天津日津科技股份有限公司 | New waterproof breathable composite membrane |
| WO2019098336A1 (en) * | 2017-11-17 | 2019-05-23 | 日東電工株式会社 | Gas processing member |
| CN108949058A (en) * | 2018-08-01 | 2018-12-07 | 东莞蒲微防水透气膜材料有限公司 | A kind of waterproof and breathable membrane module and preparation method thereof |
| CN208814940U (en) * | 2018-08-01 | 2019-05-03 | 东莞蒲微防水透气膜材料有限公司 | A kind of waterproof and breathable membrane module |
| CN211255796U (en) * | 2019-10-15 | 2020-08-14 | 苏州优派克电子科技有限公司 | Waterproof ventilated membrane of camera module Holder leakage hole |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111941977A (en) * | 2020-08-07 | 2020-11-17 | 常州浩文塑料新材料有限公司 | Waterproof breathable film and production process thereof |
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Application publication date: 20200117 |