CN110605891A - PVB film of privacy laminated glass - Google Patents
PVB film of privacy laminated glass Download PDFInfo
- Publication number
- CN110605891A CN110605891A CN201910815278.7A CN201910815278A CN110605891A CN 110605891 A CN110605891 A CN 110605891A CN 201910815278 A CN201910815278 A CN 201910815278A CN 110605891 A CN110605891 A CN 110605891A
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- China
- Prior art keywords
- privacy
- pvb
- laminated glass
- film
- layer
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- 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
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- Laminated Bodies (AREA)
Abstract
The invention discloses a PVB film of privacy laminated glass, which adopts the technical scheme that the PVB film comprises two privacy heat-insulating PVB layers and an intermediate layer, wherein the number of the privacy heat-insulating PVB layers is two, the intermediate layer is positioned between the two privacy heat-insulating PVB layers, the position of the intermediate layer corresponds to the position of the privacy heat-insulating PVB layers and is adhered, the total thickness of the PVB film can be from 0.38mm to 2.28mm according to different applications, and organic or inorganic toner with good ageing performance is added in the privacy heat-insulating PVB layer. With privacy insulating PVB, the glass processing process does not need to be changed, while other existing solutions require significant adjustments in the process.
Description
Technical Field
The invention relates to the technical field of films, in particular to a PVB film of privacy laminated glass.
Background
Privacy glass is widely used for side windows, skylights and rear windshields of automobiles, and the privacy function of the automobile glass is usually realized by changing the components of the glass, namely, single-layer privacy glass or more than one layer of privacy glass is manufactured by laminating transparent PVB. The cost of the heat absorption glass with low light transmittance and low energy transmission rate can be 1 to 3 times that of the common glass. When the laminated glass is manufactured, if the privacy glass is used, the cost is high due to the fact that the glass is thin (< 2.5 mm), the production period is long, and the risk of a supply chain is high; another common method for achieving privacy and heat insulation of automobiles is to apply a film, such as a 3M film, a nylon film, a velcro film, etc. Because the film can not meet the matched performance requirements, the films are implemented in the automobile after-loading market and have the defects of easy steam pocket discharge, easy degumming, easy scratching, easy aging, short service life and high cost. Along with economic development, the living standard of people is continuously improved, more and more automobile side windows, skylights and rear windshield glass are sandwich safety glass, so that the comfort level (sound insulation, ultraviolet resistance, heat insulation and the like), safety and security of the automobile can be improved.
Disclosure of Invention
In view of the problems in the prior art, the invention discloses a PVB film of privacy laminated glass, which adopts the technical scheme that the PVB film comprises privacy heat-insulating PVB layers and an intermediate layer, wherein the number of the privacy heat-insulating PVB layers is two, the intermediate layer is positioned between the two privacy heat-insulating PVB layers, and the position of the intermediate layer corresponds to the position of the privacy heat-insulating PVB layer and is adhered to the same.
As a preferred embodiment of the present invention, the total thickness of the PVB film can be from 0.38mm to 2.28mm depending on the application.
As a preferable technical scheme of the invention, organic or inorganic toner with good aging performance is added in the privacy heat insulation PVB layer, the color of the toner is gray, green, brown or other colors, and the content of the toner accounts for 0.1-10% of the total weight of the film.
As a preferable technical scheme of the invention, the light transmittance of the PVB film is 5-50%, and the solar energy transmission rate is less than 40%.
As a preferred technical solution of the present invention, the privacy and thermal insulation PVB layer itself may be a pvc structure, wherein the layer in contact with the glass must be a PVB-based material, and is manufactured by multilayer co-extrusion, lamination, injection molding, mold pressing or hot pressing. The middle layer can be the same as, modified or different from the components at the two ends, and can also be other polymer films with sound insulation, heat color reversal and mechanical reinforcement.
As a preferred embodiment of the present invention, the privacy thermal insulation PVB layer may have a sound insulation function, and in the 2.0/0.76/2.0 laminated glass combination, the sound insulation amount near the matching valley (2500 + 5000 HZ) is higher than that of the laminated glass made of the ordinary PVB film by more than 4DB, the infrared heat reflection and absorption (infrared blocking rate > 65%), the heating (defrosting/deicing time <120 seconds) and the image display function.
The invention has the beneficial effects that: the invention is realized on the PVB film, can relatively easily adjust the color, the light transmittance and the energy transmission coefficient, greatly reduces the total cost for manufacturing the privacy glass, shortens the development period of a new product, prolongs the service life of the product, reduces the complexity of the process of the existing scheme by using a simpler method, reduces the quality risk and avoids the defects of the existing method. With privacy insulating PVB, the glass processing process does not need to be changed, while other existing solutions require significant adjustments and technical changes in the process.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1-privacy heat insulation PVB layer and 2-interlayer.
Detailed Description
Example 1
As shown in fig. 1, the present invention discloses a PVB film of privacy laminated glass, which adopts the technical scheme that the PVB film comprises privacy heat-insulating PVB layers 1 and an intermediate layer 2, the number of the privacy heat-insulating PVB layers 1 is two, the intermediate layer 2 is located between the two privacy heat-insulating PVB layers 1, and the position of the intermediate layer 2 corresponds to and is bonded to the position of the privacy heat-insulating PVB layer 1.
As a preferred embodiment of the present invention, the total thickness of the PVB film can be from 0.82mm depending on the application.
As a preferable technical scheme of the invention, an organic toner with good aging performance is added in the privacy heat insulation PVB layer 1, the color of the toner is green, and the content of the toner accounts for 0.2% of the total weight of the film.
In a preferred embodiment of the present invention, the transmittance of the PVB film is 5% and the energy transmission rate is less than 30%.
As a preferred technical solution of the present invention, the privacy and thermal insulation PVB layer itself may be a multilayer structure, wherein the layer in contact with the glass must be a PVB-based material, and is manufactured by multilayer coextrusion, lamination, injection molding, mold pressing or hot pressing, and the like, and the intermediate layer has the same components as those at both ends.
As a preferred technical solution of the present invention, the privacy thermal insulation PVB layer may have a sound insulation function, in a laminated glass combination of 2.0/0.76/2.0, the sound insulation amount of the laminated glass near the matching valley (2500 + 5000 HZ) is higher than that of the laminated glass made of a common PVB film by more than 5DB, the infrared heat reflection and absorption (infrared blocking rate > 75%), the heating defrosting/deicing function (reaction time <120 seconds), the one-way light transmission/privacy function, the mechanical strength enhancement and the image display function.
Example 2
The technical scheme who adopts is, including privacy heat insulation PVB layer 1 and intermediate level 2, privacy heat insulation PVB layer 1's quantity is two, intermediate level 2 is located between two privacy heat insulation PVB layers 1, intermediate level 2's position corresponds and bonds with privacy heat insulation PVB layer 1's position.
As a preferred embodiment of the present invention, the total thickness of the PVB film can be from 2.28mm depending on the application.
As a preferable technical scheme of the invention, an organic toner with good aging performance is added in the privacy and heat insulation PVB layer 1, the color of the toner is gray, and the content of the toner accounts for 10% of the total weight of the film.
In a preferred embodiment of the present invention, the transmittance of the PVB film is 50% and the energy transmission rate is less than 40%.
As a preferred technical scheme of the invention, the privacy heat insulation PVB layer can be of a multilayer structure, wherein a layer contacting with glass is required to be made of PVB material, and the privacy heat insulation PVB layer is manufactured by multilayer coextrusion, compounding, injection molding, mould pressing or hot pressing and other processes. The interlayer is of the same composition as the two privacy insulating PVB layers 1.
As a preferred embodiment of the present invention, the privacy thermal insulation PVB layer may have a sound insulation function, and in the 2.0/0.76/2.0 laminated glass combination, the sound insulation amount near the matching valley (2500 + 5000 HZ) is higher than that of the laminated glass made of the ordinary PVB film by more than 8DB, the infrared heat reflection and absorption (infrared blocking rate > 85%), the heating (defrosting/deicing time <120 seconds) and the image display function.
Example 3
Including privacy heat-insulating PVB layer 1 and intermediate level 2, privacy heat-insulating PVB layer 1's quantity is two, intermediate level 2 is located between two privacy heat-insulating PVB layers 1, intermediate level 2's position corresponds and bonds with privacy heat-insulating PVB layer 1's position.
As a preferred embodiment of the present invention, the total thickness of the PVB film can be from 1.9mm depending on the application.
As a preferable technical scheme of the invention, an inorganic toner with good aging performance is added in the privacy heat insulation PVB layer 1, the color of the toner is brown, and the content of the toner accounts for 2.2% of the total weight of the film.
In a preferred embodiment of the present invention, the transmittance of the PVB film is 20% and the energy transmission rate is less than 35%.
As a preferred technical scheme of the invention, the privacy heat insulation PVB layer can be of a multilayer structure, wherein a layer in contact with glass is required to be made of PVB material, the privacy heat insulation PVB layer is manufactured by multilayer coextrusion, compounding, injection molding, mould pressing or hot pressing and other processes, and the interlayer is a polymer film with the functions of sound insulation, heat color reversion and mechanical reinforcement.
As a preferred embodiment of the present invention, the privacy thermal insulation PVB layer may have a sound insulation function, and in the 2.0/0.76/2.0 laminated glass combination, the sound insulation amount of the laminated glass near the matching valley (2500 + 5000 HZ) is higher than that of the laminated glass made of a common PVB film by more than 8DB, the infrared heat reflection and absorption (infrared blocking rate > 75%), the heating (defrosting/deicing time <120 seconds) and the image display function.
The working principle of the invention is as follows: when the PVB film is manufactured, a worker adds toner into PVB resin powder, and the toner is uniformly mixed or uniformly added into a plasticizer. And obtaining the privacy heat insulation PVB layer after extrusion or injection molding process. The functions are realized on the PVB film, the color, the light transmittance and the energy transmission coefficient can be relatively easily adjusted, the total cost for manufacturing the privacy glass is greatly reduced, and the development cycle of a new product is prolonged; the complexity of the process of the existing scheme is reduced by a simpler method, the quality risk is reduced, and the defects of the existing method are avoided; with privacy insulating PVB, the glass processing process does not need to be changed, while other existing solutions require significant adjustments in the process. The single-layer privacy-insulating PVB layer 1 can be directly sandwiched between glass interlayers for use during use.
Components not described in detail herein are prior art.
Although the present invention has been described in detail with reference to the specific embodiments, the present invention is not limited to the above embodiments, and various changes and modifications without inventive changes may be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (6)
1. A privacy laminated glass's PVB film, includes privacy thermal-insulated PVB layer (1) and intermediate layer (2), its characterized in that: the number of privacy heat insulation PVB layers (1) is two, the interlayer (2) is located between the two privacy heat insulation PVB layers (1), and the position of the interlayer (2) corresponds to the position of the privacy heat insulation PVB layer (1) and is adhered to the position of the privacy heat insulation PVB layer.
2. The PVB film for privacy laminated glass of claim 1, wherein: the total thickness of the PVB film can be from 0.38mm to 2.28mm depending on the application.
3. The PVB film for privacy laminated glass of claim 1, wherein: organic or inorganic toner with good aging performance is added in the privacy heat insulation PVB layer (1), the color of the toner is gray, green, brown or other colors, and the content of the toner accounts for 0.1-10% of the total weight of the film.
4. A PVB film for privacy laminated glass according to claim 3, wherein: the PVB film has visible light transmittance of 5-50% and solar energy transmission rate of less than 40%.
5. The PVB film for privacy laminated glass of claim 1, wherein: the PVB film can be of a multilayer structure, wherein a contact layer with glass is required to be made of PVB materials, the PVB film is manufactured through processes of multilayer co-extrusion, compounding, injection molding, mold pressing or hot pressing and the like, and the middle layer (2) can be the same or different with components at two ends and can also be other high polymer films.
6. The PVB film for privacy laminated glass of claim 1, wherein: the interlayer 2 can have a sound insulation function, the sound insulation amount of the laminated glass in the vicinity of a matching valley (2500 + 5000 HZ) in a 2.0/0.76/2.0 laminated glass combination is higher than that of the laminated glass made of a common PVB film by more than 4DB, the infrared heat reflection and absorption functions (the infrared blocking rate is more than 65 percent), the heating defrosting/deicing functions (the reaction time is less than 120 seconds), the one-way light transmission/privacy functions, the mechanical strength enhancement and the image display functions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910815278.7A CN110605891A (en) | 2019-08-30 | 2019-08-30 | PVB film of privacy laminated glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910815278.7A CN110605891A (en) | 2019-08-30 | 2019-08-30 | PVB film of privacy laminated glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110605891A true CN110605891A (en) | 2019-12-24 |
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ID=68890648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910815278.7A Pending CN110605891A (en) | 2019-08-30 | 2019-08-30 | PVB film of privacy laminated glass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110605891A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113845852A (en) * | 2021-10-09 | 2021-12-28 | 浙江多力塑胶有限公司 | Glass PVB film with sound insulation and ultraviolet insulation functions and preparation method thereof |
| CN114763021A (en) * | 2021-01-13 | 2022-07-19 | 上海海优威新材料股份有限公司 | High-strength automobile canopy glass with multilayer structure |
-
2019
- 2019-08-30 CN CN201910815278.7A patent/CN110605891A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114763021A (en) * | 2021-01-13 | 2022-07-19 | 上海海优威新材料股份有限公司 | High-strength automobile canopy glass with multilayer structure |
| CN113845852A (en) * | 2021-10-09 | 2021-12-28 | 浙江多力塑胶有限公司 | Glass PVB film with sound insulation and ultraviolet insulation functions and preparation method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20191224 |