CN111409330B - Sandwich light modulation glass - Google Patents
Sandwich light modulation glass Download PDFInfo
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- CN111409330B CN111409330B CN202010197597.9A CN202010197597A CN111409330B CN 111409330 B CN111409330 B CN 111409330B CN 202010197597 A CN202010197597 A CN 202010197597A CN 111409330 B CN111409330 B CN 111409330B
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- Joining Of Glass To Other Materials (AREA)
Abstract
The invention provides a sandwich light-adjusting glass, comprising a first light-transmitting plate, a second light-transmitting plate and a light-adjusting film positioned between the first light-transmitting plate and the second light-transmitting plate, wherein the boundary of the light-adjusting film is retracted relative to the sandwich light-adjusting glass, and the sandwich light-adjusting glass further comprises: the bonding layer is stacked between the first light-transmitting plate and the light adjusting film; the edge sealing ring is coated on the boundary of the light adjusting film; the middle of the bonding ring is provided with a through hole, and the light adjusting film and the edge sealing ring are positioned in the through hole of the bonding ring. The bonding ring and the edge sealing ring made of different materials are matched for use, the edge sealing ring is directly contacted with the boundary of the light adjusting film, and the edge sealing ring does not contain a plasticizer or contains a small amount of plasticizer, so that the defect of a transparent boundary is well overcome in the using process.
Description
The technical field is as follows:
the invention relates to the field of multifunctional glass, in particular to sandwich dimming glass.
Background art:
polymer Dispersed Liquid Crystal (PDLC) is an emerging photoelectric material developed in the 70 th generation of the 20 th century, and is a research hotspot of researchers in recent decades. The polymer dispersed liquid crystal has the advantages of simple preparation process, quick response time, no need of a polarizing device and the like, and is gradually applied to various electronic elements such as light valves, gratings, light-transmitting projection screens, dimming glasses and the like. The light-adjusting glass is also called as an electronic curtain, and the working principle is as follows: when the power supply of the light adjusting glass is turned off, the liquid crystal molecules in the light adjusting glass are in an irregular dispersion state, light cannot be emitted at the moment, and the light adjusting glass is in an opaque state; when the power supply of the light adjusting glass is turned on, the liquid crystal molecules in the light adjusting glass are in a neat arrangement state, at the moment, light can freely penetrate through the light adjusting glass, and the light adjusting glass is in a light-transmitting state. Because of its dimming property, the dimming glass has been widely used in high-grade places such as office buildings, medical institutions, commercial displays, and the like.
For PDLC light control glass products, a laminated structure is a very common choice, the laminated glass requires the use of an adhesive layer, and problems that are difficult to solve exist when PVB (polyvinyl butyral) is selected as the intermediate adhesive material.
In a PVB material, a phenomenon that a plasticizer (mostly triethylene glycol diisocaprylate) leaks out of PVB at high temperature exists, and the plasticizer dissolves a liquid crystal polymer in PDLC to destroy the barrier effect of the polymer, so that the whole functional layer becomes a uniform phase and becomes a transparent state, the dimming effect is permanently lost, and a defect called a transparent boundary is formed. The traditional method is that PVB is replaced by bonding materials such as EVA (ethylene-vinyl acetate copolymer) or POE (polyolefin elastomer) without or with few plasticizer materials, but the EVA and POE have inferior mechanical property (low-temperature impact) and ultraviolet resistance to PVB, so that the use of the PVB in wider industries is limited, for example, in the automobile glass industry, the laminated glass almost adopts PVB; another method is to edge-seal the edge of the PDLC film (the edge-sealing material is mainly epoxy resin or acrylic resin) as disclosed in patent CN201710675277.8 to prevent the plasticizer in the PVB from permeating into the liquid crystal polymer layer of the PDLC, which can prevent the edge region of the PDLC film from failing after long-term use, but this can cause the processing process of the PDLC film to be complicated and the processing cost to be greatly increased.
In addition, the PDLC dimming film used in the dimming glass has a certain thickness, the material used for the substrate layer is usually PET, but the adhesion between the PET substrate and PVB is poor, and the fluidity of PVB at high temperature and high pressure is not very good, especially when the film thickness is greater than 0.2mm, the poor adhesion and the large film thickness cause incomplete air exhaust in the interlayer process, and the edge region of the final laminated glass product has the defects of bubbles, splinters and the like.
If the adhesive material such as EVA or POE is adopted, the flowability is good, the adhesiveness with the PET substrate is better, but glue overflow is easy, the subsequent trimming difficulty of glue overflow is high, and the processing process easily causes the damage of the processing auxiliary tool, such as a vacuum ring, a vacuum bag and the like commonly used in the conventional automobile glass interlayer, and the adhesive material cannot be reused due to glue overflow.
The invention content is as follows:
aiming at the technical problems in the prior art, the invention provides the sandwich light-adjusting glass with the improved structural design, aims to solve the problem of a transparent boundary line caused by the influence of a plasticizer on a PDLC light-adjusting film without edge sealing on the structure on the basis of not changing the original sandwich process as much as possible, and also provides a method for manufacturing the sandwich light-adjusting glass.
The technical scheme adopted by the invention is as follows:
the utility model provides an intermediate layer light control glass, contains first light-passing board, second light-passing board and is located the light control membrane between first light-passing board and the second light-passing board, its characterized in that, the border of light control membrane for the interior shrink of intermediate layer light control glass, intermediate layer light control glass still contains:
the bonding layer is stacked between the first light-transmitting plate and the light adjusting film;
the edge sealing ring is coated on the boundary of the light adjusting film;
the middle of the bonding ring is provided with a through hole, and the light adjusting film and the edge sealing ring are positioned in the through hole of the bonding ring.
In a possible embodiment, a filling layer is further stacked between the light adjusting film and the second light-transmitting plate.
In one possible embodiment, the filling layer is located in the through hole of the adhesive ring.
In one possible embodiment, the width of the edge band is greater than 1 mm.
In a possible embodiment, the material of the bonding layer and the bonding ring is PVB, and the material of the edge sealing ring is EVA or POE.
The method for manufacturing the interlayer dimming glass comprises the following steps:
and 5, laminating the dimming laminated body through an interlayer production process to obtain the interlayer dimming glass.
In one possible embodiment, the boundary of the light adjusting film placed in step 2 and the bond ring are less than 5mm apart.
Another method for manufacturing the laminated light control glass includes the following steps:
step 3a, providing a filling layer, and laminating the filling layer above the light adjusting film;
and 5, laminating the dimming laminated body through an interlayer production process to obtain interlayer dimming glass, wherein a filling layer is filled in the interlayer production process and flows to coat the boundary of the dimming film to form an edge sealing ring.
In a possible embodiment, the material of the filling layer is EVA or POE.
In one possible embodiment, the distance between the boundary of the filler layer laminated in step 3a and the adhesive ring is less than 3 mm.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1. the bonding ring and the edge sealing ring with different characteristics are matched for use, the edge sealing ring is directly contacted with the boundary of the light adjusting film, and the edge sealing ring does not contain a plasticizer or contains less plasticizer, so that the defect of a transparent boundary is well solved in the process of using the light adjusting film.
2. The edge sealing ring is made of a material with high flowability, so that a plurality of adverse effects are brought to the interlayer process, the conventional PVB used in the bonding ring has low flowability, the bonding ring is arranged on the outer side of the edge sealing ring, the flowing of the edge sealing ring material is limited in the interlayer process, and the production inconvenience caused by the high flowability of the edge sealing ring is avoided.
Description of the drawings:
fig. 1 is a cross-sectional view of an overall structure of a laminated light control glass according to the present invention;
FIG. 2 is a cross-sectional view of another laminated light control glass according to the present invention;
FIG. 3 is a schematic illustration of the lay-up of the binder ring of the present invention;
FIG. 4 is a schematic view of a combination of a bonding ring, a light adjusting film, and a sealing ring according to the present invention;
FIG. 5 is a schematic view of another bonding ring, light adjusting film, and edge banding ring of the present invention;
fig. 6 is a flow chart of a method for manufacturing the laminated light control glass according to the present invention;
fig. 7 is a flow chart of another method for manufacturing the laminated light control glass of the present invention.
Description of reference numerals:
1. the light-transmitting plate comprises a first light-transmitting plate, 2, an adhesive layer, 3, a light-adjusting film, 4, an adhesive ring, 5, an edge sealing ring, 6, a second light-transmitting plate, 7 and a filling layer;
41. and a through hole.
The specific implementation mode is as follows:
to explain technical contents, achieved objects and effects of the present invention in detail, the present invention will be further described with reference to the accompanying drawings and embodiments, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
In the present invention, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are primarily intended to better describe the invention and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation, and therefore should not be construed as limiting the invention.
As shown in fig. 1, the present invention provides a laminated light-adjusting glass, comprising a first transparent plate 1, a second transparent plate 6, and a light-adjusting film 3 located between the first transparent plate 1 and the second transparent plate 6, wherein a boundary of the light-adjusting film 3 is retracted relative to the laminated light-adjusting glass, and the laminated light-adjusting glass further comprises:
an adhesive layer 2 laminated between the first light-transmitting plate 1 and the light adjusting film 3;
the edge sealing ring 5 is coated on the boundary of the light adjusting film 3;
the middle part of the bonding ring 4 is provided with a through hole 41, and the light adjusting film 3 and the edge sealing ring 5 are positioned in the through hole 41 of the bonding ring 4. The bonding ring 4 and the edge sealing ring 5 made of different materials are matched for use, the edge sealing ring 5 is directly contacted with the boundary of the light adjusting film 3, and the edge sealing ring 5 does not contain a plasticizer or contains a small amount of plasticizer, so that the defect of a transparent boundary is well solved in the process of using the light adjusting film 3.
The first light-transmitting plate 1 and the second light-transmitting plate 6 can be made of tempered or common inorganic glass or organic glass, the first light-transmitting plate 1 and the second light-transmitting plate 6 can also be made of laminated glass to improve the overall safety of the glass, the first light-transmitting plate 1 and the second light-transmitting plate 6 can be made of curved glass, and the curved functional laminated glass suitable for automobiles can be obtained on occasions where the curved glass is used.
The light adjusting film 3 is a PDLC light adjusting film which is widely used at present, the interior of the PDLC light adjusting film is composed of liquid crystal molecules and polymers, the polymers in the light adjusting film 3 are easily eroded by the plasticizer, so that eroded portions become transparent, the portions are reflected on an interlayer light adjusting product, namely, areas where the periphery of the light adjusting film 3 is in contact with the binding material with the plasticizer can form a gradually increased transparent area along with the increase of the service time of the product, and the defect is called as a transparent boundary line. The thickness of the light adjusting film 3 is between 0.1mm and 0.4mm, and the light adjusting film 3 is retracted relative to the second light-transmitting plate 6, it can be understood that the area of the light adjusting film 3 is smaller than that of the first light-transmitting plate 1 and the second light-transmitting plate 6, and the retracted space area is filled up by the bonding ring 4.
The adhesive layer 2 is made of PVB adhesive material which is most commonly used in laminated glass and has good adhesive property, the adhesive layer 2 is a flaky layer, the thickness of the flaky layer is usually 0.38mm-1.14mm, the flaky layer covers the whole surface of the first transparent plate 1, and the light adjusting film 3 and the first transparent plate 1 are firmly adhered together through the adhesive layer 2.
As shown in fig. 3-4, the bonding ring 4, the edge sealing ring 5, and the light adjusting film 3 are tiled in the same layer, the middle portion of the bonding ring 4 is hollowed out, that is, a through hole 41 is formed in the middle portion of the bonding ring 4, and the light adjusting film 3 is enclosed in the through hole 41. The adhesive ring 4 is made of common PVB adhesive material like the adhesive layer 2, and the thickness of the adhesive ring 4 is usually 0.38mm-1.14mm, so that the periphery of the laminated glass is sealed. The adhesive ring 4 has a width h1, said width h1 being greater than 3mm, preferably greater than 10mm, the width of the adhesive ring 4 being too small resulting in insufficient adhesion and inconvenient handling during production.
The edge sealing ring 5 is positioned between the bonding ring 4 and the light modulation film 3, fills the space between the bonding ring 4 and the light modulation film 3, and covers the periphery of the light modulation film 3 to separate the bonding ring 4 from the light modulation film 3. The material used for the edge sealing ring 5 is adhesive material containing no or little plasticizer, such as EVA and POE, preferably EVA, and has thickness similar to that of the adhesive ring 4, preferably the same thickness as that of the adhesive ring 4. The width h2 of the edge band 5 is greater than 1mm, preferably 5-10 mm. The edge sealing ring 5 with the characteristics is directly contacted with the boundary of the light adjusting film 3, and the edge sealing ring 5 does not contain or contains little plasticizer, so that the defect of a transparent boundary of the light adjusting film 3 without edge sealing caused by the corrosion of the plasticizer can be solved. Because the interlayer process for manufacturing the laminated glass has the high-temperature and high-pressure working procedures, the material used by the edge sealing ring 5 has stronger fluidity at high temperature and high pressure. And the edge sealing ring 5 is surrounded in the middle by the bonding ring 4 with smaller fluidity, so that the process problem caused by the over-strong fluidity of the edge sealing ring 5 in the production process is solved.
In another embodiment, a sheet-like filling layer 7 can be added between the light adjusting film 3 and the second light-transmitting plate 6, and the filling layer 7 can be one of PVB, EVA, and POE, preferably EVA. When EVA or POE is selected as the material, the filling layer 7 is surrounded in the through hole 41 by the bonding ring 4 in consideration of the problem of strong fluidity; when PVB is used as the material, the filling layer 7, like the adhesive layer 2, may be a sheet-like layer covering the entire surface of the second light-transmitting plate 6. Increase the adhesion that one deck filling layer 7 can improve membrane 3 and second light-passing board 6 of adjusting luminance, make the whole security of intermediate layer product better, also can reduce the probability that the bubble produced in the intermediate layer product production process.
In another embodiment, as shown in fig. 5, the edge banding ring 5 can accommodate a plurality of dimming films 3, and each dimming film 3 can be independently controlled, so as to implement the function of zone dimming. The shape of the edge sealing ring 5 is adjusted and designed according to the number and the size of the light adjusting films 3, and the boundary of each light adjusting film 3 can be covered by the edge sealing ring 5.
The invention also provides a manufacturing method of the laminated dimming glass, as shown in fig. 6, comprising the following steps:
and 5, laminating the dimming laminated body through an interlayer production process to obtain the interlayer dimming glass.
The laminated glass is generally laminated in a process opposite to the product structure, wherein a first light-transmitting plate 1 is firstly placed, then materials of all layers are sequentially laminated on the first light-transmitting plate 1, finally a second light-transmitting plate 6 is covered to obtain a laminated body, and the laminated body is subjected to a mature laminated production process to obtain a laminated glass product. The interlayer production process comprises the working procedures of high temperature and high pressure, adhesive materials (including the adhesive layer 2, the adhesive ring 4, the edge sealing ring 5 and the like) in the laminated glass have fluidity at high temperature, wherein the fluidity of the materials used by the edge sealing ring 5 is too strong, so that a lot of adverse effects are brought to the interlayer process, the conventional PVB used by the adhesive ring 4 has smaller fluidity, the adhesive ring 4 is arranged at the outer side of the edge sealing ring 5, so that the flowing of the materials of the edge sealing ring 5 is limited in the interlayer process, and the production inconvenience caused by the too strong fluidity of the edge sealing ring 5 can be avoided.
In the manufacturing process, certain gaps can be allowed to be formed among the components so as to reduce the positioning difficulty when each component is placed, and the gaps can be filled by the fluidity of materials at high temperature. In step 3, the border of the light adjusting film 3 and the bonding ring 4 may be disposed with a gap having a width, preferably less than 5 mm. In step 3, the width h2 of the edge sealing ring 5 used may be slightly smaller than the width of the gap between the border of the light adjusting film 3 and the adhesive ring 4.
The present invention provides another manufacturing method, as shown in fig. 7, including the following steps:
step 3a, providing a filling layer 7, and laminating the filling layer 7 on the light modulation film 3;
and 5, laminating the dimming laminated body through an interlayer production process to obtain interlayer dimming glass, wherein the filling layer 7 is coated on the boundary of the dimming film 3 in a flowing manner in the interlayer production process to form an edge sealing ring 5.
It can be seen that the greatest difference between this method and the previous method is the replacement of step 3 with step 3 a. The filling layer 7 used in step 3a is one of EVA or POE, preferably EVA. When the filling layer 7 is made of EVA or POE, the filling layer 7 is stacked above the dimming film 3, but is still surrounded in the through hole 41 by the bonding ring 4. Due to the fact that the material has strong flowability, only the filling layer 7 is used without the edge sealing ring 5, and considering that the EVA has strong flowability at high temperature and high pressure, a part of the filling layer 7 in the interlayer process flows to fill the gap between the boundary of the light modulation film 3 and the bonding ring 4, the edge sealing ring 5 coated on the boundary of the light modulation film 3 is formed, and the boundary of the light modulation film 3 of the finally obtained laminated light modulation glass still has the edge sealing ring 5. The implementation method can reduce the processes of manufacturing and placing the edge sealing ring 5, the operation difficulty of stacking the filling layer 7 is lower than that of placing the positioning edge sealing ring 5, the filling layer 7 can also improve the adhesive force between the light adjusting film 3 and the second light-transmitting plate 6, and the safety of the whole laminated glass is improved.
In another manufacturing method, the filling layer 7 and the edge sealing ring 5 can also be used simultaneously, the material of the filling layer 7 is PVB, and the material of the edge sealing ring 5 is EVA or POE, in which case the filling layer 7 is a sheet-like layer similar to the adhesive layer 2 and enough to cover the whole second light-transmitting plate 6, and can not be enclosed in the through holes 41 of the adhesive ring, and because the material used for the filling layer 7 is PVB, the problem of too strong fluidity does not exist.
Example (b):
first light-passing board 1 and second light-passing board 2 are the glass of thickness 2.1mm, tie coat 2 is the PVB of thickness 0.38mm, the membrane of adjusting luminance is the PDLC membrane of adjusting luminance of thickness 0.38mm, it is the PVB of thickness 0.76mm to bond the ring, its width h1 is 15mm, filling layer 7 is the EVA of thickness 0.38mm, use above method preparation intermediate layer light control glass, the gap distance between 3 borders of membrane of adjusting luminance and bonding ring 4 is 5mm, the intermediate layer process parameter adopts the parameter of traditional car glass laminating piece. Due to the good high-temperature fluidity of EVA, the EVA can flow and fill gaps among the bonding materials under the action of high temperature and high pressure, so that the permeation of a plasticizer in PVB to the PDLC light modulation film 3 is blocked, and a good protection effect is achieved.
The above description is intended to provide preferred embodiments of the present invention, and not to limit the present invention, and the present invention is not limited to the above examples, and variations, modifications, additions and substitutions which can be made by those skilled in the art within the spirit and scope of the present invention are also within the scope of the present invention.
Claims (9)
1. The utility model provides an intermediate layer light control glass, contains first light-passing board (1), second light-passing board (6) and is located light control membrane (3) between first light-passing board (1) and second light-passing board (6), its characterized in that, the border of light control membrane (3) is for the interior shrink of intermediate layer light control glass, intermediate layer light control glass still contains:
the bonding layer (2) is laminated between the first light-transmitting plate (1) and the light adjusting film (3), and the bonding layer (2) is made of PVB;
the edge sealing ring (5) is coated on the boundary of the light adjusting film (3), and the edge sealing ring (5) is made of EVA or POE;
the bonding ring (4) is provided with a through hole (41) in the middle, the dimming film (3) and the edge sealing ring (5) are located in the through hole (41) of the bonding ring (4), and the bonding ring (4) is made of PVB.
2. The laminated light control glass according to claim 1, wherein a filling layer (7) is further laminated between the light control film (3) and the second light-transmitting plate (6).
3. The laminated light control glass according to claim 2, wherein the filler layer (7) is located in the through hole (41) of the adhesive ring (4).
4. A laminated light control glass as claimed in claim 1, wherein the edge sealing ring (5) has a width greater than 1 mm.
5. A method of making a laminated privacy glass as claimed in claim 1, comprising the steps of:
step 1, providing a first light-transmitting plate (1), and laminating an adhesive layer (2) above the first light-transmitting plate (1);
step 2, placing an adhesive ring (4) with a through hole (41) above the adhesive layer (2), and placing a light adjusting film (3) in the through hole (41) of the adhesive ring (4);
step 3, placing the edge sealing ring (5) in the through hole of the bonding ring (4) and locating at the boundary of the light adjusting film (3);
step 4, laminating a second light-transmitting plate (6) above the bonding ring (4) and the edge sealing ring (5) to form a dimming laminated body;
and 5, laminating the dimming laminated body through an interlayer production process to obtain the interlayer dimming glass.
6. The method for manufacturing a laminated light-adjusting glass according to claim 5, wherein the distance between the boundary of the light-adjusting film (3) placed in the step 2 and the bonding ring (4) is greater than 1 mm.
7. A method of making a laminated privacy glass as claimed in claim 2, comprising the steps of:
step 1, providing a first light-transmitting plate (1), and laminating an adhesive layer (2) above the first light-transmitting plate (1);
step 2, placing an adhesive ring (4) with a through hole (41) above the adhesive layer (2), and placing a light adjusting film (3) in the through hole (41) of the adhesive ring (4);
step 3a, providing a filling layer (7), and laminating the filling layer (7) above the light adjusting film (3);
step 4, laminating a second light-transmitting plate (6) above the filling layer (7) to form a light-adjusting laminated body;
and 5, laminating the dimming laminated body through an interlayer production process to obtain interlayer dimming glass, wherein the filling layer (7) is coated on the boundary of the dimming film (3) in a flowing manner in the interlayer production process to form an edge sealing ring (5).
8. The method for manufacturing a laminated light control glass according to claim 7, wherein the material of the filling layer (7) is EVA or POE.
9. The method for manufacturing a laminated light control glass according to claim 7, wherein the distance between the boundary of the filling layer (7) laminated in the step 3a and the bonding ring (4) is less than 3 mm.
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| CN112882293B (en) * | 2021-03-01 | 2022-09-13 | 福耀玻璃工业集团股份有限公司 | Sandwich functional glass |
| CN113183586A (en) * | 2021-05-31 | 2021-07-30 | 扬州晶彩光电科技有限公司 | Manufacturing process of ultrathin display dimming glass |
| CN114604066A (en) * | 2021-05-31 | 2022-06-10 | 法国圣戈班玻璃公司 | Glass component |
| CN116685898A (en) * | 2021-12-31 | 2023-09-01 | 京东方科技集团股份有限公司 | Dimming glass, preparation method thereof and vehicle |
| CN116699916A (en) * | 2022-02-24 | 2023-09-05 | 光羿智能科技(苏州)有限公司 | Dimming device and dimming device |
| CN115257116B (en) * | 2022-07-29 | 2023-11-03 | 福耀玻璃工业集团股份有限公司 | Dimming component, preparation method thereof and vehicle |
| CN117962431B (en) * | 2024-04-02 | 2024-06-07 | 上海隆昇光电新材料有限公司 | Laminated glass containing PDLC film and packaging method thereof |
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Effective date of registration: 20230912 Address after: 201814 Shanghai Jiading District city Anting Town Park Road No. 588 Patentee after: FUYAO GROUP (SHANGHAI) AUTOMOBILE GLASS Co.,Ltd. Address before: 350301 zone 2, Fuyao Glass Industrial Zone, Honglu Town, Fuqing City, Fuzhou City, Fujian Province Patentee before: FUYAO GLASS INDUSTRY GROUP Co.,Ltd. |