WO2019086687A1

WO2019086687A1 - Adhesive tape, its use and structure using adhesive tape

Info

Publication number: WO2019086687A1
Application number: PCT/EP2018/080234
Authority: WO
Inventors: Xin Zhang; Haofeng YANG; Hongbin Shi
Original assignee: Tesa Se
Priority date: 2017-11-06
Filing date: 2018-11-06
Publication date: 2019-05-09
Also published as: CN109749656A

Abstract

The present disclosure provides an adhesive tape, its use and a structure using the adhesive tape. The adhesive tape according to the embodiments of the present disclosure comprises a transparent acrylic polymer layer, an opaque layer formed on the transparent acrylic polymer layer, and a first adhesive layer formed on the opaque layer. By providing the opaque layer in the adhesive tape according to the embodiments of the present disclosure, it is not only possible to cover bubbles generated during the bonding of the adhesive tape and improve the appearance effect of the transparent glass mounted on a substrate, but also possible to select the color-matching opaque layer depending on different substrates, thereby avoiding the use of printed glass, facilitating the reduction in production cost and ensuring the desired transparent effect.

Description

ADHESIVE TAPE, ITS USE AND STRUCTURE USING ADHESIVE TAPE

TECHNICAL FIELD

[0001] The present disclosure relates to a field of an adhesive, especially to an adhesive tape, its use and a structure using the adhesive tape.

BACKGROUND

[0002] In the case where an adhesive tape is used to mount a transparent material such as glass to a substrate such as a door frame or a window frame, especially to a metal door frame or a metal window frame, conventional adhesive tapes include transparent acrylic tapes, acrylic foam tapes or liquid glue. However, bubbles are very likely to occur in the mounting process using such adhesive tapes, and they may be visible through the transparent material, thereby negatively affecting the aesthetic appearance.

[0003] To solve this problem, a common approach in prior art is to print a shielding layer on glass at a corresponding position where the adhesive tape and the metal frame are bonded, so as to cover bubbles generated during the bonding of the adhesive tape. As shown in Fig. 1, glass 200 is printed with a shielding layer having a color matching that of metal frame 300, in its peripheral region corresponding to the adhesive tape 100 and the metal frame 300, such that the bubbles generated in the bonding process using the tape 100 are covered. However, this existing technology has the following disadvantages: in the process of mounting glass of some structures, such as building glass, display panel glass, display cabinet glass, automobile glass, or the like, the color of the frame as the substrate may vary with the design of the corresponding structure, environmental requirements, etc, therefore it is necessary to print on the glass depending on the color of the metal frame, which not only increases the cost, but also requires frequent replacement of glass as a fitting in the adjustment of the structure, thereby reducing the operability, and further the glass after being printed will show greatly reduced transparency, and fail to meet people's demand for transparency.

SUMMARY

[0004] In view of the above, an object of the present disclosure is to provide an adhesive tape which is low in cost and will not deteriorate the aesthetic effect for bubbles generated during the bonding.

[0005] According to one aspect of the present disclosure, there provides an adhesive tape.

[0006] According to another aspect of the present disclosure, there further provides use of the adhesive tape in the mounting of glass.

[0007] According to a further aspect of the present disclosure, there further provides a structure in which glass is mounted by means of the adhesive tape of the present disclosure.

[0008] To solve the technical problems, the preset disclosure provides the following technical solutions.

[0009] The adhesive tape according to the present disclosure includes a transparent acrylic polymer layer; an opaque layer formed on the transparent acrylic polymer layer; and a first adhesive layer formed on the opaque layer. [0010] The transparent acrylic polymer layer is a main constituent of the adhesive tape and has a certain thickness. For example, the transparent acrylic polymer layer has a thickness of from 250 to 3000 micrometers according to some embodiments of the present disclosure.

[0011] In the case where an adhesive tape is bonded to a rigid object having an uneven surface, such as a metal frame, it is unavoidable to generate bubbles. The formation of bubbles can be reduced by improving the composition of the adhesive tape, but it is still difficult to achieve the appearance requirements. To this end, the opaque layer is provided, which can fully cover the bubbles generated at an interface between the adhesive tape and the metal frame.

[0012] In addition, to enable the opaque layer to have an adhesion or increased adhesion, the first adhesive layer is formed on the opaque layer. Further, according to some embodiments of the present disclosure, a second adhesive layer is further formed on a side of the transparent acrylic polymer layer opposite to the opaque layer in order to further improve the adhesion.

[0013] According to some embodiments of the present disclosure, a release film layer is formed on one or both of outermost sides of the adhesive tape. The release film may be made of a material commonly used for a release film in this art, such as PE release film or PET release film, and will not be described in detail here.

[0014] According to some embodiments of the present disclosure, the opaque layer may be an opaque plastic layer which is a single- layered or coextruded multilayered opaque plastic layer and which includes resin selected from poly(ethylene terephthalate), polypropylene, polyurethane, acrylic polymers, or mixtures thereof; and opaque pigment particles. Here, a person skilled in the art may understand that the opaque plastic layer itself may be a single layer or coextruded multilayer.

[0015] According to some other embodiments of the present disclosure, the opaque layer is formed by applying a coating containing a metal pigment on the transparent acrylic polymer layer. Thus, it is possible to apply it by printing, spraying or other methods, to a position of the adhesive tape corresponding to a metal paint used in the metal frame. This process is not only simple, but also can achieve better match with the metal frame without causing any negative effect on the process performance of the adhesive tape.

[0016] According to still further embodiments of the present disclosure, the opaque layer is a metal foil layer or a laminate formed of a metal foil and plastic.

[0017] According to still some embodiments of the present disclosure, the opaque layer is formed of a cloth with a mesh count of from 18 to 450.

[0018] According to other embodiments of the present disclosure, the opaque layer is formed of paper having a thickness of from 10 to 200 micrometers.

[0019] The opaque layer may be further provided with text or patterns by printing.

[0020] According to some embodiments of the present disclosure, the first adhesive layer and the second adhesive layer are formed of a pressure sensitive adhesive which is selected from solvent-based pressure sensitive adhesives, water-soluble pressure sensitive adhesives, UV curable pressure sensitive adhesives, extruded acrylic pressure sensitive adhesives, rubber pressure sensitive adhesives, electron beam polymerized pressure sensitive adhesives, organosilicon pressure sensitive adhesives, or mixtures thereof.

[0021] Further, the first adhesive layer and the second adhesive layer have thicknesses independent of each other, which are in the range from 2 to 3000 micrometers, respectively. That is, the first adhesive layer and the second adhesive layer may have the same or different thicknesses, each being in the range from 2 to 3000 micrometers.

[0022] An adhesive tape according to other embodiment of the present disclosure includes a first transparent acrylic polymer layer; an opaque layer formed on the first transparent acrylic polymer layer; and a second transparent acrylic polymer layer formed on the opaque layer.

[0023] That is to say, the adhesive tape according to this embodiment is provided with the transparent acrylic polymer layer on both sides of the opaque layer as compared with the adhesive tape of the above-mentioned embodiments.

[0024] According to some embodiments of the present disclosure, the first transparent acrylic polymer layer and the second transparent acrylic polymer layer have thicknesses independent of each other, which are in the range from 250 to 3000 micrometers, respectively. That is, the first transparent acrylic polymer layer and the second transparent acrylic polymer layer may have the same or different thicknesses, each being in the range from 250 to 3000 micrometers. [0025] Likewise, for the purpose of improving the adhesive property of the adhesive tape, an adhesive layer according to some embodiments of the present disclosure is further formed on the outside of at least one of the first transparent acrylic polymer layer and the second transparent acrylic polymer layer.

[0026] Likewise, for the purpose of improving the release performance of the adhesive tape, a release film layer is formed on one or both of outermost sides of the adhesive tape according to some embodiments of the present disclosure.

[0027] According to some embodiments of the present disclosure, the opaque layer is an opaque plastic layer which is a single- layered or coextruded multilayered opaque plastic layer and which includes resin selected from poly(ethylene

terephthalate), polypropylene, polyurethane, acrylic polymers, or mixtures thereof; and opaque pigment particles.

[0028] According to further embodiments of the present disclosure, the opaque layer is formed by applying a coating containing a metal pigment on the transparent acrylic polymer layer.

[0029] According to still some embodiments of the present disclosure, the opaque layer is a metal foil layer or a laminate formed of a metal foil and plastic.

[0030] According to other embodiments of the present disclosure, the opaque layer is formed of a cloth with a mesh count of from 18 to 450.

[0031] According to other embodiments of the present disclosure, the opaque layer is formed of paper having a thickness of from 10 to 200 micrometers.

[0032] Likewise, the opaque layer is provided with text or patterns by printing. [0033] According to some embodiments of the present disclosure, the adhesive layer is formed of a pressure sensitive adhesive which is selected from solvent-based pressure sensitive adhesives, water-soluble pressure sensitive adhesives, UV curable pressure sensitive adhesives, extruded acrylic pressure sensitive adhesives, rubber pressure sensitive adhesives, electron beam polymerized pressure sensitive adhesives, organosilicon pressure sensitive adhesives, or mixtures thereof. Further, according to some embodiments of the present disclosure, the adhesive layer has a thickness of from 2 to 3000 micrometers.

[0034] According to another aspect of the present disclosure, there provides use of the above-mentioned adhesive tape, i.e., use of the adhesive tape of any of the above embodiments in the mounting of glass, such as building glass, display panel glass, display cabinet glass, automobile glass, etc.

[0035] Further, according to some embodiments of the present disclosure, there provides a structure in which glass is mounted by means of the adhesive tape of any of the above embodiments.

[0036] The technical solutions of the present disclosure produce at least one of the following advantageous effects:

The adhesive tape according to the embodiments of the present disclosure is provided with the opaque layer. As a result, it is not only possible to cover bubbles generated during the bonding of the adhesive tape and improve the appearance effect of the transparent glass mounted on a substrate, but also possible to select the color-matching opaque layer depending on different substrates, thereby avoiding the use of printed glass. It facilitates the reduction in production cost and ensures the desired transparent effect. The adhesive tapes according to the

embodiments of the present disclosure may be applied to the mounting of door or window glass in the field of buildings, display cabinet glass or display panel glass, and vehicle door or window glass in the automobile manufacturing field.

BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Fig. 1 is a schematic view showing a structure when glass is mounted to a metal frame in prior art;

[0038] Fig. 2 is a structural schematic view of an adhesive tape 10 according to the embodiment 1 of the present disclosure, which includes a transparent acrylic polymer layer 11, an opaque layer 12 and a first adhesive layer 13;

[0039] Fig. 3 is a structural schematic view of an adhesive tape 20 according to the embodiment 2 of the present disclosure, including a first adhesive layer 21, a transparent acrylic polymer layer 22, an opaque layer 23 and a second adhesive layer

24;

[0040] Fig. 4 is a structural schematic view of an adhesive tape according to the embodiment 3 of the present disclosure, including a first transparent acrylic polymer layer 31, an opaque layer 32 and a second transparent acrylic polymer layer 33;

[0041] Fig. 5 is a structural schematic view of an adhesive tape according to the embodiment 4 of the present disclosure, including a first transparent acrylic polymer layer 41, an opaque layer 42, a second acrylic polymer layer 43, and an adhesive layer 44;

[0042] Fig. 6 is a structural schematic view of an adhesive tape according to embodiment 5 of the present disclosure, including an adhesive layer 51, a first transparent acrylic polymer layer 52, an opaque layer 53, and a second transparent acrylic polymer layer 54.

DETAILED DESCRIPTION

[0043] In order to make the object, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described in a clear and complete manner in conjunction with the accompanying drawings thereof. Obviously, the described embodiments are some, but not all, of the embodiments of the present

disclosure. The other embodiments obtained by a person skilled in the art based on these described embodiments will also fall within the scope of the present disclosure.

[0044] The adhesive tape according to some embodiments of the present disclosure includes a transparent acrylic polymer layer, an opaque layer, and a first adhesive layer. Further, the adhesive tape further includes a second adhesive layer formed on a side of the transparent acrylic polymer layer opposite to the opaque layer as shown in Fig. 2.

[0045] In addition, the adhesive tape according to some other embodiments of the present disclosure includes a first transparent acrylic polymer layer, an opaque layer formed on the first transparent acrylic polymer layer; and a second transparent acrylic polymer layer formed on the opaque layer.

[0046] Further, in order to improve the adhesive property of the adhesive tape, an adhesive layer is formed on the outside of the first transparent acrylic polymer layer or the second transparent acrylic polymer layer.

[0047] To further improve the adhesive property of the adhesive tape, an adhesive layer is formed on the outside of each of the first transparent acrylic polymer layer and the second transparent acrylic polymer layer.

[0048] Furthermore, in some embodiments of the present disclosure, a release film layer (not shown) may be formed on one or both of outermost sides of the adhesive tape. The release film layer functions to protect and isolate the adhesive tape and can improve the release performance.

[0049] Below, specific compositions of the layers will be explained first. [0050] Here, it shall be noted that, when the adhesive tape includes a plurality of transparent acrylic polymer layers or a plurality of adhesive layers, the plurality of transparent acrylic polymer layers have compositions and thicknesses independent of each other, i.e., their compositions and their thicknesses may be the same or different. In other words, the composition, thickness, preparation method, sources and the like of each of the above layers may be independent of and not affected by those of another. Naturally, from the viewpoint of improving the operability, the plurality of transparent acrylic polymer layers may be formed of the same material. Likewise, the plurality of adhesive layers have compositions and thicknesses independent of each other, that is, their compositions and their thickness may be the same or different. Furthermore, when a cloth is involved in the present disclosure, the mesh count of the cloth refers to the number of threads per inch (n/inch).

[0051] [Transparent Acrylic Polymer Layer]

[0052] The transparent acrylic polymer layer may be an acrylic polymer layer.

[0053] Optionally, the transparent acrylic polymer layer is a solid layer made of acrylic polymers. The transparent acrylic polymer is commercially available, such as transparent tesa^®ACX^plus series products provided by tesa SE.

[0054] Naturally, the present disclosure is not limited to the use of the above adhesive tape, and also applies to other acrylic polymers. The transparent acrylic polymer layer is self-adhesive. The adhesive tapes provided in the embodiments of the present disclosure are double-sided adhesive tapes. [0056] Specifically, the transparent acrylic polymer layer may have a thickness of from 250 to 3000 micrometers. The transparent acrylic polymer layer having a certain thickness can fully exhibit the adhesive property of the adhesive tape, thereby ensuring the bonding effect between the transparent material and the substrate.

[0057] [Opaque Layer]

[0058] The opaque layer may be a single- layered or coextruded multilayered opaque plastic layer, and comprises resin and opaque pigment particles. The resin may be selected from poly(ethylene terephthalate) (PET), polypropylene (PP),

polyurethane (PU), acrylic polymers, or mixtures thereof. The opaque pigment particles impart a variety of colors to PET, PP, PU or mixtures thereof, including white, black and other colors. If the opaque layer according to the embodiment of the present disclosure is an opaque plastic layer, the thickness of the opaque layer is preferably from 2 to 200 micrometers.

[0059] Optionally, the opaque layer is formed by applying a coating containing a metal pigment on the transparent acrylic polymer layer. Thus, it is possible to apply it by printing, spraying or other methods, to a position of the adhesive tape corresponding to a metal paint used in the metal frame, and this process is not only simple, but also can achieve better match with the metal frame without causing any negative effect on the process performance of the adhesive tape.

[0060] In addition, the opaque layer of the embodiments of the present disclosure may be just a metal foil layer, such as an aluminum foil layer, a copper foil layer, a zinc foil layer or a stainless steel foil layer, or a laminate of the metal foil and plastic. In the case where the opaque layer of the embodiment of the present disclosure is the metal foil layer or the laminate of the metal foil and plastic, the opaque layer 12 preferably has a thickness of from 10 to 200 micrometers.

[0061] Furthermore, the opaque layer may be further formed of a cloth with a mesh count of from 18 to 450.

[0062] Further, the opaque layer may be further formed of paper having a thickness of from 10 to 200 micrometers.

[0063] For the purposes of appearance requirements, business promotion and security warning, text or patterns may be further formed on the opaque layer by printing.

[0064] The opaque layer according to the embodiments of the present disclosure is to cover the color of the bubbles such that their color is not observable through the transparent acrylic polymer layer, and the opaque layer may be designed to have white, black, grey, blue, silver or other colors. Specifically, its color may be determined depending on the environment in which it is used. There are also various options for the other properties of the opaque layer, such as optical properties, mechanical properties. The options of the opaque properties are not intended to limit the present disclosure.

[0065] [Adhesive Layer]

[0066] The adhesive layer may be formed of a pressure sensitive adhesive which may be selected from solvent-based pressure sensitive adhesives, water-soluble pressure sensitive adhesives, UV curable pressure sensitive adhesives, extruded acrylic pressure sensitive adhesives, rubber pressure sensitive adhesives, electron beam polymerized pressure sensitive adhesives, organosilicon pressure sensitive adhesives, or mixtures thereof.

[0067] Further, the adhesive layer may have a thickness of from 2 to 3000 micrometers.

[0068] In addition, in the adhesive tape according to the embodiments of the present disclosure, the adhesive layer preferably uses a transparent or translucent adhesive in order not to affect the transparency of the transparent acrylic polymer layer.

[0069] Below, the adhesive tape according to the present disclosure will be explained by means of specific embodiments. It shall be understood that, the present disclosure is not limited to these specific embodiments.

[0070] Embodiment 1

[0071] As shown in Fig. 2, the adhesive tape 10 according to this embodiment includes a transparent acrylic polymer layer 11, an opaque layer 12 formed on the transparent acrylic polymer layer 11, and a first adhesive layer 13 formed on the opaque layer 12. That is, the opaque layer 12 is located between the transparent acrylic polymer layer 11 and the first adhesive layer 13.

[0072] The transparent acrylic polymer layer 11 is made of transparent tesa^®ACX^plus (a thickness of 500 micrometers, visually transparent) provided by tesa SE; the opaque layer 12 is a laminate formed by laminating aluminum foil and a PET plastic layer (a total thickness is 40 micrometers, and PET surface shows a matte silver color, and the aluminum foil surface shows a bright silver color). The first adhesive layer 13 is a pure acrylic pressure sensitive adhesive layer having a thickness of 50 micrometers, and is colorless and transparent.

[0073] The adhesive tape 10 according to this embodiment of the present disclosure may be prepared as follows: successively stacking the transparent acrylic polymer layer 11, the opaque layer 12 and the first adhesive layer 13, which layers are then rolled, for example, to form the adhesive tape 10 of embodiment 1. The opaque layer may be subjected to surface treatment prior to the rolling. Specifically, for example, the opaque layer 12 is subjected to corona treatment in an air or nitrogen atmosphere to achieve a surface energy of at least 54 Dyne, then stacked on the transparent acrylic polymer layer 11 and then rolled with proper pressure after the first adhesive layer 13 is stacked thereon.

[0074] [Appearance Evaluation]

[0075] Test adhesive tape: adhesive tape of embodiment 1

[0076] In addition, an adhesive tape which does not include the opaque layer

12 is also used as comparative example 1 for comparison. Except that the adhesive tape of comparative example 1 does not include the opaque layer 12, the other layers have the same structures, compositions and thicknesses as those in embodiment 1.

[0077] Test method: the adhesive tapes of embodiment 1 and comparative example 1 were used for bonding transparent glass to an aluminum substrate to obtain sample A and sample B, respectively. The samples A and B were then stored in a climatic test chamber for 20 cycles under the conditions of test standard PV1200 of the Volkswagen group. After the completion of the 20 cycles, the samples A and B were stored under the conditions of room temperature (23 degrees Celsius) and 50% relative humidity for 24 hours for appearance observation.

[0078] The sample using the adhesive tape of embodiment 1 did not show any visible bubbles when viewed from the side of glass; while the sample using the adhesive tape of comparative example 1 showed a lot of visible bubbles when viewed from the side of glass.

[0079] That is, in the case of using the adhesive tape 10 of this embodiment of the present disclosure to bond the transparent material such as glass to the substrate such as the metal frame, even if bubbles are generated due to surface gradient, roughness and the like of the metal frame when the adhesive layer 13 is pressed against the metal frame, the bubbles may be effectively covered by the opaque layer 12, thereby making it possible to ensure the aesthetic appearance after the mounting.

[0080] Embodiment 2

[0081] The adhesive tape 20 according to this embodiment includes a first adhesive layer 21, a transparent acrylic polymer layer 22, an opaque layer 23, and a second adhesive layer 24 from bottom to top, as shown in Fig. 3.

[0082] The first adhesive layer 21 and the second adhesive layer 24 may be formed of the same material as the first adhesive layer 13 in embodiment 1.

[0083] Moreover, the transparent acrylic polymer layer 22 is formed of the same material as the transparent acrylic polymer layer 11 in embodiment 1. [0084] The opaque layer 23 is a laminate formed by laminating aluminum foil and a PET plastic layer (a total thickness is 40 micrometers, and PET surface shows a matte silver color, and the aluminum foil surface shows a bright silver color).

[0085] Furthermore, the other layers have the same compositions as the corresponding layers in embodiment 1, and will not be described in detail here.

[0086] [Appearance Evaluation]

[0087] Test adhesive tape: adhesive tape 20 of embodiment 2

[0088] In addition, an adhesive tape which does not include the opaque layer

23 is also used as comparative example 2 for comparison. Except that the adhesive tape of comparative example 2 does not include the opaque layer 23, the other layers have the same structures, compositions and thicknesses as those in embodiment 1.

[0089] Test method: the adhesive tapes of embodiment 2 and comparative example 2 were used for bonding transparent glass to an aluminum substrate to obtain sample C and sample D, respectively. The samples C and D were then stored in a climatic test chamber for 20 cycles under the conditions of test standard PV1200 of the Volkswagen group. After the completion of the 20 cycles, the samples C and D were stored under the conditions of room temperature (23 degrees Celsius) and 50% relative humidity for 24 hours for appearance observation.

[0090] The sample using the adhesive tape of embodiment 2 did not show any visible bubbles when viewed from the side of glass; while the sample using the adhesive tape of comparative example 2 showed a lot of visible bubbles when viewed from the side of glass.

[0091] Embodiment 3

[0092] As shown in Fig. 4, the adhesive tape 30 according to this embodiment of the present disclosure consists of a first transparent acrylic polymer layer 31 , an opaque layer 32 and a second transparent acrylic polymer layer 33 from top to bottom.

[0093] Specifically, the opaque layer 32 is formed between the first transparent acrylic polymer layer 31 and the second acrylic polymer layer 33.

[0094] In this example, the first transparent acrylic polymer layer 31 and the second transparent acrylic polymer layer 33 are solid layers made of a acrylic polymer which is highly transparent tesa^®ACX^plus provided by tesa SE.

[0095] The opaque layer 32 is a composite film consisting of two PET films between which a colorful layer (for example, an orange layer, on each side of which is the PET film) is printed, with a total thickness of 34 micrometers.

[0096] Except the opaque layer 32, other layers have the same compositions as those corresponding layers in embodiment 1, and will not described in detail here.

[0097] [Appearance Evaluation]

[0098] Test adhesive tape: adhesive tape 30 of embodiment 3

[0099] Test method: the adhesive tape 30 of embodiment 3 was used for bonding one piece of transparent glass to another piece of transparent glass, and then stored in a climatic test chamber for 20 cycles under the conditions of test standard PV1200 of the Volkswagen group. After the completion of the 20 cycles, the sample was stored under the conditions of room temperature (23 degrees Celsius) and 50% relative humidity for 24 hours for appearance observation.

[0100] No bubbles were observed when viewed the side of the other piece of glass.

[0101] Embodiment 4

[0102] As shown in Fig. 5, the adhesive tape 40 according to this embodiment of the present disclosure consists of a first transparent acrylic polymer layer 41, an opaque layer 42 and a second transparent acrylic polymer layer 43 and an adhesive layer 44 from top to bottom.

[0103] The opaque layer is formed of white paper substrate and has a thickness of 120 micrometers.

[0104] Furthermore, the first transparent acrylic polymer layer 41 and the second transparent acrylic polymer layer 42 are made of the same material which is the same as that of the corresponding layer in embodiment 1. Also the adhesive layer 44 has the same ingredients as the corresponding layer in embodiment 1 , thus these layers will not be described in detail here.

[0105] Embodiment 5

[0106] As shown in Fig. 6, the adhesive tape 50 according to this embodiment of the present disclosure consists of an adhesive layer 51, a first transparent acrylic polymer layer 52, an opaque layer 53, a second transparent acrylic polymer layer 54 and an adhesive layer 51 from top to bottom. [0107] These layers are made of the same materials as the corresponding layers in embodiment 4, and will not be described in detail here. The adhesive tapes according to the embodiments of the present disclosure may be applied to the mounting of building glass, including indoor and outdoor glass, such as the mounting of window glass and door glass of houses such as shopping malls and residences. By bonding glass and door frame or window frame together with the adhesive tape according to the embodiments of the present disclosure, it is not only possible to cover bubbles generated during the bonding of the adhesive tape and improve the appearance effect of the transparent glass mounted on a substrate, but also possible to select the color-matching opaque layer depending on different substrates, thereby avoiding the use of printed glass, facilitating the reduction in production cost and ensuring the desired transparent effect.

[0108] The adhesive tape according to the embodiments of the present disclosure may be further applied to the mounting of glass of display cabinets or display panels. By bonding the glass and a frame of the display cabinet with the adhesive tape according to the embodiments of the present disclosure, it is not only possible to cover bubbles generated during the bonding of the adhesive tape and improve the appearance effect of the transparent glass mounted on a substrate, but also possible to select the color-matching opaque layer depending on different substrates, thereby avoiding the use of printed glass, facilitating the reduction in production cost and ensuring the desired transparent effect. Furthermore, text or patterns may be further printed on the opaque layer in combination with advertising, security warning and other need of the display cabinet, so as to further improve the display effect and eye-catching degree.

[0109] The adhesive tapes according to the embodiments of the present disclosure can be applied to the mounting of automobile glass, such as window glass or door glass. For an automobile whose glass is mounted with the adhesive tape according to the embodiment of the present disclosure, window glass is bonded to the window frame with the adhesive tape according to the embodiment of the present disclosure, and / or door glass is bonded to the door frame with the adhesive tape according to the embodiment of the present disclosure. Since the adhesive tape according to the embodiment of the present disclosure produce the above technical effects, the automobile according to the embodiment of the present disclosure also produce the corresponding technical effects, i.e., by providing the opaque layer in the adhesive tape, it is not only possible to cover bubbles generated during the bonding of the adhesive tape and improve the appearance effect of the transparent glass mounted on a substrate, but also possible to select the color-matching opaque layer depending on different substrates, thereby avoiding the use of printed glass, facilitating the reduction in production cost and ensuring the desired transparent effect.

[0110] The above are preferred embodiments of the present disclosure, but it shall be indicated that a person skilled in the art may make several improvements and modifications without departing from the principle of the present disclosure, and such improvements and medications shall also be considered to fall within the protection scope of the present disclosure.

Claims

What is claimed is:

1. An adhesive tape, comprising:

a transparent acrylic polymer layer;

an opaque layer formed on the transparent acrylic polymer layer; and a first adhesive layer formed on the opaque layer.

2. The adhesive tape according to claim 1, wherein a second adhesive layer is further formed on a side of the transparent acrylic polymer layer opposite to the opaque layer.

3. The adhesive tape according to claim 1 or 2, wherein a release film layer is further formed on one or both of outermost sides of the adhesive tape.

4. The adhesive tape according to claim 1, wherein the transparent acrylic polymer layer has a thickness of from 250 to 3000 micrometers.

5. The adhesive tape according to claim 1, wherein the opaque layer is an opaque plastic layer which is a single- layered or coextruded multilayered opaque plastic layer, and the opaque plastic layer comprises resin selected from poly(ethylene terephthalate), polypropylene, polyurethane, acrylic polymers, or mixtures thereof; and opaque pigment particles.

6. The adhesive tape according to claim 1, wherein the opaque layer is formed by applying a coating containing a metal pigment on the transparent acrylic polymer layer.

7. The adhesive tape according to claim 1, wherein the opaque layer is a metal foil layer or a laminate formed of a metal foil and plastic.

8. The adhesive tape according to claim 1, wherein the opaque layer is formed of a cloth with a mesh count of from 18 to 450.

9. The adhesive tape according to claim 1, wherein the opaque layer is formed of paper having a thickness of from 10 to 200 micrometers.

10. The adhesive tape according to claim 1, wherein the opaque layer is provided with text or patterns by printing.

11. The adhesive tape according to claim 2, wherein the first adhesive layer and the second adhesive layer are formed of a pressure sensitive adhesive which is selected from solvent-based pressure sensitive adhesives, water-soluble pressure sensitive adhesives, UV curable pressure sensitive adhesives, extruded acrylic pressure sensitive adhesives, rubber pressure sensitive adhesives, electron beam polymerized pressure sensitive adhesives, organosilicon pressure sensitive adhesives, or mixtures thereof.

12. The adhesive tape according to claim 2, wherein the first adhesive layer and the second adhesive layer have independently thicknesses of 2 to 3000

micrometers, respectively.

13. A adhesive tape, comprising:

a first transparent acrylic polymer layer;

an opaque layer formed on the first transparent acrylic polymer layer; and a second transparent acrylic polymer layer formed on the opaque layer.

14. The adhesive tape according to claim 13, wherein an adhesive layer is further formed on the outside of at least one of the first transparent acrylic polymer layer and the second transparent acrylic polymer layer.

15. The adhesive tape according to claim 13 or 14, wherein a release film layer is further formed on one or both of outermost sides of the adhesive tape.

16. The adhesive tape according to claim 13, wherein the first transparent acrylic polymer layer and the second transparent acrylic polymer layer have independently thicknesses of 250 to 3000 micrometers, respectively.

17. The adhesive tape according to claim 13, wherein the opaque layer is an opaque plastic layer which is a single- layered or coextruded multilayered opaque plastic layer, and the opaque plastic layer comprises resin selected from poly(ethylene terephthalate), polypropylene, polyurethane, acrylic polymers, or mixtures thereof; and opaque pigment particles.

18. The adhesive tape according to claim 13, wherein the opaque layer is formed by applying a coating containing a metal pigment on the first transparent acrylic polymer layer.

19. The adhesive tape according to claim 13, wherein the opaque layer is a metal foil layer or a laminate formed of a metal foil and plastic.

20. The adhesive tape according to claim 13, wherein the opaque layer is formed of a cloth with a mesh count of from 18 to 450.

21. The adhesive tape according to claim 13, wherein the opaque layer is formed of paper having a thickness of from 10 to 200 micrometers.

22. The adhesive tape according to claim 13, wherein the opaque layer is provided with text or patterns by printing.

23. The adhesive tape according to claim 13, wherein the adhesive layer is formed of a pressure sensitive adhesive which is selected from solvent-based pressure sensitive adhesives, water-soluble pressure sensitive adhesives, UV curable pressure sensitive adhesives, extruded acrylic pressure sensitive adhesives, rubber pressure sensitive adhesives, electron beam polymerized pressure sensitive adhesives, organosilicon pressure sensitive adhesives, or mixtures thereof.

24. The adhesive tape according to claim 13, wherein the adhesive layer has a thickness of from 2 to 3000 micrometers.

25. Use of the adhesive tape according to any one of claims 1 to 24 in the mounting of glass.

26. A structure, in which glass is mounted by means of the adhesive tape according to any one of claims 1 to 24.