CN219328959U - Direct-sticking PDLC film structure - Google Patents

Abstract

The utility model relates to the technical field of PDLC dimming films, in particular to a direct-attached PDLC film structure. The direct-attached PDLC film structure comprises: the PDLC dimming film is adhered to the glass through the adhesive piece, and the support piece is arranged between the PDLC dimming film and the glass along the circumferential direction; the PDLC dimming film acts on the supporting piece to enable the supporting piece to deform differently at different positions, and a closed cavity is formed between the PDLC dimming film and the glass. The direct-sticking type PDLC film structure provided by the utility model can stick the PDLC dimming film on hyperboloid glass, and solves the problem that the existing direct-sticking film cannot be stuck on hyperboloid glass.

Description

Direct-sticking PDLC film structure

Technical Field

The utility model relates to the technical field of PDLC dimming films, in particular to a direct-attached PDLC film structure.

Background

The PDLC dimming film is a compound dimming film formed by coating a polymer dispersed liquid crystal layer between two PEI-ITO films, polymerizing the polymer through photo-curing or thermal curing, and bonding the two PEI-ITO films together. The PDLC dimming film becomes transparent under the condition of power on and is vaporific when not powered on, so that the PDLC dimming film is a novel electronic curtain with sun-shading and heat-insulating functions. The PDLC dimming film is adhered to the automobile skylight glass, and when the automobile skylight glass is electrified, the dimming film becomes transparent, so that the automobile skylight glass can enjoy the same experience as that of a simple awning glass, and when the automobile skylight glass is powered off, the dimming film becomes vaporific, so that the problems of sunshade, heat insulation and the like can be solved for drivers and passengers. The PDLC dimming film is mainly applied to the fields of indoor partition, glass curtain walls, automobile glass and the like.

The existing self-sticking type or direct-sticking type PDLC dimming film used for sticking on glass is a whole-face film back adhesive or a whole-face film AB adhesive, and the self-sticking type or direct-sticking type PDLC dimming film can be stuck on plane glass, but cannot be stuck on skylight or sky curtain glass. Because the automobile skylight is glass with a hyperbolic sphere, the planar PDLC dimming film is adhered to the glass with the hyperbolic sphere, and the problems of wrinkles and the like are inevitably generated.

Disclosure of Invention

The utility model aims to provide a direct-attached PDLC film structure so as to solve the problem that a planar PDLC dimming film in the prior art is attached to glass with a hyperbolic sphere to generate wrinkles.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows:

a direct-attach PDLC film structure, comprising: the PDLC dimming film is attached to the glass through the adhesive piece, and the supporting piece is arranged between the PDLC dimming film and the glass along the circumferential direction;

the PDLC dimming film acts on the supporting piece to enable the supporting piece to deform differently at different positions, and a closed cavity is formed between the PDLC dimming film and the glass.

Still further, the method comprises the steps of,

the support piece set up in the viscidity piece, perhaps, the support piece set up in the edge of viscidity piece inner circumference.

Still further, the method comprises the steps of,

the support piece is a support bar, the support bar is made of silica gel or acrylic materials, and the height range of the support bar is 1-10mm.

Still further, the method comprises the steps of,

one surface of the adhesive piece is adhered to the PDLC dimming film, and the other surface of the adhesive piece is used for adhering the PDLC dimming film to glass.

Still further, the method comprises the steps of,

the outer edge of the adhesive piece coincides with the outer edge of the PDLC dimming film.

Still further, the method comprises the steps of,

the adhesive piece is double faced adhesive tape, and the double faced adhesive tape adopts OCA (optical clear adhesive) adhesive tape or silica gel or foam double faced adhesive tape.

Still further, the method comprises the steps of,

the width range of the double faced adhesive tape is 2cm-20cm, and the stripping force of the double faced adhesive tape is more than 1000gf/25mm.

Still further, the method comprises the steps of,

the PDLC dimming film is provided with an air valve, the air valve is used for charging and discharging air into the closed cavity, and the air valve is a one-way valve.

Still further, the method comprises the steps of,

and the diagonal positions of the PDLC dimming film are respectively provided with an air inlet and an air outlet.

Still further, the method comprises the steps of,

the support piece interval is provided with a plurality of ventholes, the initial section of support piece stretches out the laminating region and is provided with the air inlet, the last section of support piece is provided with the air outlet, the air inlet be used for to let in inert gas in the airtight chamber, the venthole is used for the inert gas that will let in discharges, the air outlet be used for with unnecessary gas discharge in the airtight chamber.

The utility model has at least the following beneficial effects:

because the utility model provides a direct-attached PDLC film structure, the structure comprises: the PDLC dimming film is attached to the glass through the adhesive piece, and the supporting piece is arranged between the PDLC dimming film and the glass along the circumferential direction; the PDLC dimming film acts on the supporting piece to enable the supporting piece to deform differently at different positions, and a closed cavity is formed between the PDLC dimming film and the glass.

The inner side of the PDLC dimming film sticking position is stuck with a supporting piece through a sticky piece along glass of a circle of film sticking area, the supporting piece can play a certain supporting role on the PDLC dimming film, the supporting piece is higher than the surface of the glass, deformation degrees are different under different pressure effects, and a closed cavity is formed between the PDLC dimming film and the glass. The PDLC dimming film is pressed by different forces at different positions of the supporting piece to generate different deformations, so that the height difference of the planar PDLC dimming film attached to the hyperboloid glass is reduced, the PDLC dimming film is kept flat and is not wrinkled, and the planar PDLC dimming film can be attached to the glass surface smoothly and straightly.

In order to make the above objects, features and advantages of the present utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the related art, the drawings that are required to be used in the description of the embodiments or the related art will be briefly described, and it is apparent that the drawings in the description below are some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

Fig. 1 is a schematic diagram of a direct-attached PDLC film structure according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a cross-sectional view B-B of FIG. 1;

FIG. 4 is a schematic view of a support member according to an embodiment of the present utility model;

fig. 5 is a schematic view of an adhesive member according to an embodiment of the present utility model.

Icon:

100-PDLC dimming film; 200-an adhesive member; 300-support; 310-air outlet holes; 320—an air inlet; 330-air outlet; 400-glass.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Physical quantities in the formulas, unless otherwise noted, are understood to be basic quantities of basic units of the international system of units, or derived quantities derived from the basic quantities by mathematical operations such as multiplication, division, differentiation, or integration.

Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Some embodiments of the present utility model are described in detail below with reference to the accompanying drawings. The embodiments described below and features of the embodiments may be combined with each other without conflict. Fig. 1 is a schematic diagram of a direct-attached PDLC film structure according to an embodiment of the present utility model; FIG. 2 is a cross-sectional view A-A of FIG. 1; FIG. 3 is a cross-sectional view B-B of FIG. 1; FIG. 4 is a schematic view of a support member according to an embodiment of the present utility model; fig. 5 is a schematic view of an adhesive member according to an embodiment of the present utility model.

Example 1

The existing self-sticking type or direct-sticking type PDLC dimming film used for sticking on glass is a whole-face film back adhesive or a whole-face film AB adhesive, and the self-sticking type or direct-sticking type PDLC dimming film can be stuck on plane glass, but cannot be stuck on skylight or sky curtain glass. Because the automobile skylight is glass with a hyperbolic sphere, the planar PDLC dimming film is adhered to the glass with the hyperbolic sphere, and the problems of wrinkles and the like are inevitably generated.

In view of this, an embodiment of the present utility model provides a direct-attached PDLC film structure, including: the PDLC dimming film 100, the adhesive piece 200 and the supporting piece 300, wherein the adhesive piece 200 is arranged at the edge of the inner circumference of the PDLC dimming film 100, the PDLC dimming film 100 is attached to the glass 400 through the adhesive piece 200, and the supporting piece 300 is arranged between the PDLC dimming film 100 and the glass 400 along the circumference; the PDLC dimming film 100 acts on the support 300 to deform the support 300 differently at different positions, and a closed cavity is formed between the PDLC dimming film 100 and the glass 400.

The supporting piece 300 is attached to the glass 400 along the film attaching area along the inner side of the film attaching position of the PDLC light adjusting film 100 through the adhesive piece 200, the supporting piece 300 can play a certain supporting role on the PDLC light adjusting film 100, the supporting piece 300 is higher than the surface of the glass 400, and the deformation degrees are different under different pressure effects, so that a closed cavity is formed between the PDLC light adjusting film 100 and the glass 400. The PDLC dimming film 100 reduces the height difference of the planar PDLC dimming film 100 attached to the hyperboloid glass 400 by pressing different forces at different positions of the support 300 to generate different deformations, so that the PDLC dimming film 100 is kept flat, is not wrinkled, and can be attached to the surface of the glass 400 smoothly and straightly.

It should be noted that, the soft support 300 and the low-thickness rigid support 300 may be deformed differently at different positions, so that a closed cavity is formed between the PDLC dimming film 100 and the glass 400.

In an alternative manner of this embodiment, the supporting member 300 is provided to the adhesive member 200, or the supporting member 300 is provided to an inner circumferential edge of the adhesive member 200.

Referring specifically to fig. 1, the supporting member 300 may be selectively disposed on the adhesive member 200 or at the inner circumferential edge of the adhesive member 200, 2-10cm from the edge of the PDLC dimming film 100. The supporting member 300 is a supporting bar made of a silica gel material or an acrylic material, and the height of the supporting bar ranges from 1 mm to 10mm.

The support bar is made of soft silica gel material or low-thickness hard acrylic material, and the single-sided back glue can overcome the break difference of the hyperbolic spherical glass 400, so that the PDLC dimming film 100 is kept flat. The PDLC dimming film 100 with different curvatures can select support bars with different thicknesses, and the larger the curvature of the PDLC dimming film 100 is, the larger the thickness of the selected support bar is.

In an alternative manner of this embodiment, one surface of the adhesive member 200 is adhered to the PDLC dimming film 100, and the other surface is used to adhere the PDLC dimming film 100 to the glass 400. The outer edge of the adhesive member 200 coincides with the outer edge of the PDLC dimming film 100.

Further, the adhesive member 200 is a double sided tape, and the double sided tape is OCA tape, silicone tape, or foam double sided tape. The width range of the double faced adhesive tape is 2cm-20cm, and the stripping force of the double faced adhesive tape is more than 1000gf/25mm.

Referring to fig. 2 and 3, a double sided tape is disposed at the edge of the film-sticking area, the outer edge of the double sided tape is consistent with the outer edge of the PDLC dimming film 100, one side of the double sided tape is stuck on the glass 400, and the other side is stuck on the PDLC dimming film 100.

Referring to fig. 5, the method for setting the double-sided tape and the support bar includes: the release film on one side of the double sided tape is uncovered and attached to the outermost edge of the PDLC dimming film 100 or the edge position of the film attaching region of the glass 400, and the double sided tape on two adjacent sides is cross-attached, but not limited to the cross manner in fig. 5, so as to ensure air tightness. Then the support bar is stuck on the glass 400 at the inner side of the double-sided adhesive region, and a circle is stuck at a distance of 2-10cm from the outermost edge of the film sticking region.

The PDLC dimming film 100 inside the support bar is not contacted with the glass 400, and inert gas can be filled into the airtight cavity between the PDLC dimming film 100 and the glass 400, so as to increase the heat insulation performance of the direct-attached PDLC film structure.

By providing the air valve on the direct-attached PDLC film structure, the following various means can be used to inflate and deflate the sealed cavity between the PDLC dimming film 100 and the glass 400.

Mode one: the air valve is arranged on the PDLC dimming film 100, and the air valve is a one-way valve manufactured according to the principle of reverse air pressure sealing.

Mode two: referring to fig. 4, the supporting member 300 is provided with a plurality of air outlet holes 310 at intervals, the initial section of the supporting member 300 extends out of the bonding area and is provided with an air inlet 320, the final section of the supporting member 300 is provided with an air outlet 330, the air inlet 320 is used for introducing inert gas into the closed cavity, the air outlet holes 310 are used for discharging the introduced inert gas, and the air outlet 330 is used for discharging redundant gas in the closed cavity.

In this manner, the PDLC dimming film 100 is provided with an intake valve and an exhaust valve on both sides thereof, respectively. The air inlet valve takes a hollow supporting strip as a conductor, a plurality of air outlet holes 310 are formed in the supporting strip, the initial section of the supporting strip extends out of the attaching area, a breakable notch is formed in the supporting strip at the inner side of the double-sided adhesive tape, and the supporting strip extending to the outer side of the notch is not provided with back adhesive. The position of the air outlet hole 310 is not sealed after the PDLC dimming film 100 is attached, the inert gas is introduced into the air inlet hole 320 on the supporting strip, the inert gas is discharged from the air outlet hole 310 on the supporting strip, the redundant gas in the closed cavity is discharged from the air outlet 330, whether to stop inflation is determined according to the inert gas concentration of the air outlet 330, the supporting strip is broken by a notch by force after the inflation is stopped, and the PDLC dimming film 100 at the broken position is attached on the double-sided adhesive tape.

Mode three: the opposite corners of the PDLC dimming film 100 are provided with an air inlet and an air outlet, respectively. Two holes are formed in the opposite corners of the PDLC dimming film 100, one hole is provided with an air inlet, the air inlet is provided with a one-way check valve, the PDLC dimming film 100 can be inflated, and after inflation is stopped, air in the PDLC dimming film 100 cannot overflow from the air inlet. The other hole is provided with a controllable air outlet, and the air outlet is also provided with a one-way check valve, so that the air flows out of the PDLC dimming film 100 in a one-way.

The application provides a direct-attached type PDLC film structure, can paste PDLC dimming film 100 on hyperboloid glass 400, has solved the problem that current direct-attached film can't paste on hyperboloid glass 400. In addition, the application can fill inert gas between the PDLC dimming film 100 and the glass 400, so that the heat insulation performance of the film-coated glass 400 can be improved.

Example two

The embodiment of the utility model provides a PDLC dimming film sticking method. Specifically, the front end of the PDLC dimming film 100 is attached first, the second side release film of the front double faced adhesive tape is torn off, the attaching line of the attaching area is aligned, the PDLC dimming film 100 is stretched left and right, the two persons are matched and stretched flat, and the PDLC dimming film 100 is attached to the glass 400 through the double faced adhesive tape of the front end from the middle to the two sides. And then the rear end is attached, the second side release film of the rear end double faced adhesive tape is torn off, the attaching line of the attaching area is aligned, the PDLC dimming film 100 is stretched left and right, the whole film is stretched by two persons, and the film is attached to the glass 400 through the double faced adhesive tape of the rear end from the middle to the two sides. And finally tearing off the second side release film of the double faced adhesive tape on both sides, and pressing the films left and right. After the bonding is completed, the airtight cavity between the PDLC dimming film 100 and the glass 400 is circularly inflated and deflated, inert gas is inflated into the airtight cavity, and then part of the gas in the airtight cavity is pumped out, so that the airtight cavity is kept at a certain vacuum degree. The edge of the PDLC dimming film 100 and the support bars can be covered by using the sticker matched with the bonding scene, so that the aesthetic feeling of the laminated film is improved.

The PDLC dimming film pasting method not only can be applied to skylight glass, but also can be applied to other products such as partitions, glass curtain walls and the like.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. A direct-attach PDLC film structure, comprising: the PDLC dimming film is attached to the glass through the adhesive piece, and the supporting piece is arranged between the PDLC dimming film and the glass along the circumferential direction;

the PDLC dimming film acts on the supporting piece to enable the supporting piece to deform differently at different positions, and a closed cavity is formed between the PDLC dimming film and the glass.

2. The direct-attached PDLC film structure of claim 1, wherein,

the support piece set up in the viscidity piece, perhaps, the support piece set up in the edge of viscidity piece inner circumference.

3. The direct-attached PDLC film structure of claim 2, wherein,

the support piece is a support bar, the support bar is made of silica gel or acrylic materials, and the height range of the support bar is 1-10mm.

4. The direct-attached PDLC film structure as claimed in any one of claim 1 to 3, wherein,

one surface of the adhesive piece is adhered to the PDLC dimming film, and the other surface of the adhesive piece is used for adhering the PDLC dimming film to glass.

5. The direct-attached PDLC film structure as claimed in claim 4, wherein,

the outer edge of the adhesive piece coincides with the outer edge of the PDLC dimming film.

6. The direct-attached PDLC film structure of claim 5, wherein,

the adhesive piece is double faced adhesive tape, and the double faced adhesive tape adopts OCA (optical clear adhesive) adhesive tape or silica gel or foam double faced adhesive tape.

7. The direct-attached PDLC film structure of claim 6, wherein,

the width range of the double faced adhesive tape is 2cm-20cm, and the stripping force of the double faced adhesive tape is more than 1000gf/25mm.

8. The direct-attached PDLC film structure of claim 1, wherein,

the PDLC dimming film is provided with an air valve, the air valve is used for charging and discharging air into the closed cavity, and the air valve is a one-way valve.

9. The direct-attached PDLC film structure of claim 1, wherein,

and the diagonal positions of the PDLC dimming film are respectively provided with an air inlet and an air outlet.

10. The direct-attached PDLC film structure of claim 1, wherein,

the support piece interval is provided with a plurality of ventholes, the initial section of support piece stretches out the laminating region and is provided with the air inlet, the last section of support piece is provided with the air outlet, the air inlet be used for to let in inert gas in the airtight chamber, the venthole is used for the inert gas that will let in discharges, the air outlet be used for with unnecessary gas discharge in the airtight chamber.

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