Vehicle-mounted backlight foam optimization structure capable of avoiding layering

Abstract

The utility model discloses a vehicle-mounted backlight foam optimized structure capable of avoiding layering, which comprises an upper protective film, a first double-faced adhesive tape, foam, a second double-faced adhesive tape and a lower protective film, and the upper surface and the lower surface of the first double-faced adhesive tape are respectively adhered with one surface of the upper protective film and one surface of the foam through the viscosity of the first double-faced adhesive tape. The upper surface and the lower surface of the second double-faced adhesive tape are bonded with the other surface of the foam and the lower protective film respectively, the foam, the second double-faced adhesive tape and the lower protective film are consistent in length, the end of the first double-faced adhesive tape is inwards shortened by a distance relative to the end of the upper protective film and the end of the foam, and a notch is formed in the position of the end of the first double-faced adhesive tape. The part, extending out of the foam, of the end of the upper protective film is arranged to be a pulling bar. Due to the design of the notch, the first double-sided adhesive tape can be prevented from overflowing at the die cutting tool mark, it is ensured that the foam and the upper protective film are not directly adhered at the position, the phenomena of tearing and layering caused by the fact that the foam is taken away by the first double-sided adhesive tape when the film is torn can be prevented, and the performance and operation convenience of the vehicle-mounted backlight foam are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle display technical field more particularly, is related to a kind of vehicle backlight bubble cotton optimization structure that can avoid stratification. BACKGROUND

[0002] Vehicle backlight bubble cotton glue is mainly used for the fixed installation of automobile interior backlight assembly, bubble cotton glue can firmly paste backlight assembly in specified position and can absorb vibration, ensure that backlight assembly does not loosen displacement when vehicle drives, with good insulating property, prevent backlight assembly from being contacted with other conductive materials, also have certain sealing effect, can prevent dust, moisture etc. Enter the inside of backlight assembly. The production of backlight bubble cotton glue usually adopts bubble cotton double-sided adhesive process, when assembling with backlight assembly, production line operator or customer will tear off the protective film on the surface of double-sided adhesive, but the structure of traditional backlight bubble cotton glue, as shown in Figure 1 And Figure 2 The die-cutting punch 01 of the protective film 101 and the end edge of the double-sided adhesive 102 will have a knife mark, and the double-sided adhesive will overflow into the knife mark, causing the double-sided adhesive and the protective film to be bonded together at the knife mark, making it difficult to separate. When tearing off the protective film, the foam and the double-sided adhesive at the bonding site will be lifted by the protective film, causing the foam to tear and stratify, resulting in a decrease in the performance of the foam. SUMMARY

[0003] The utility model aims at overcoming the above-mentioned defects in the prior art, providing a vehicle backlight bubble cotton optimization structure that can prevent the foam from being lifted during film tearing, significantly reducing the probability of operational errors, and ensuring the performance of the vehicle backlight bubble cotton.

[0004] To achieve the above-mentioned purpose, the utility model provides a vehicle backlight bubble cotton optimization structure that can avoid stratification, comprising an upper protective film, a first double-sided adhesive, a foam, a second double-sided adhesive, and a lower protective film. The upper and lower surfaces of the first double-sided adhesive are bonded to the upper protective film and one surface of the foam through their own adhesion. The upper and lower surfaces of the second double-sided adhesive are bonded to the other surface of the foam and the lower protective film through their own adhesion. The length of the foam, the second double-sided adhesive, and the lower protective film is consistent. The end of the first double-sided adhesive is shortened by a certain distance relative to the end of the upper protective film and the foam, and a notch is formed at this position. The end of the upper protective film that protrudes from a part of the foam is set as a pull bar, and the pull bar is separated from the adhesive surface of the first double-sided adhesive.

[0005] Preferably, the width of the first double-sided adhesive is consistent with the width of the foam and the second double-sided adhesive.

[0006] Preferably, the shape and size of the foam and the second double-sided adhesive are the same.

[0007] Preferably, the foam is PU foam, EVA foam or PE foam.

[0008] Preferably, the upper protective film and the lower protective film are both transparent PET release film.

[0009] Preferably, the first double-sided adhesive and the second double-sided adhesive are respectively acrylic pressure-sensitive adhesive, elastomer pressure-sensitive adhesive or resin pressure-sensitive adhesive.

[0010] Compared with the prior art, the present application has the advantages of:

[0011] The present application has the advantages of simple structure and reasonable design. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description.

[0013] Figure 1 is a structural schematic diagram of the background technology provided by the present application Figure 1 ;

[0014] Figure 2 is a structural schematic diagram of the background technology provided by the present application Figure 2 ;

[0015] Figure 3 is a cross-sectional schematic diagram of the optimized structure of the vehicle-mounted backlight foam capable of avoiding delamination provided by the present application;

[0016] Figure 4 is an enlarged cross-sectional schematic diagram of the optimized structure of the vehicle-mounted backlight foam capable of avoiding delamination provided by the present application;

[0017] Figure 5It is the assembling front perspective view schematic drawing of the vehicle-mounted backlight bubble cotton optimization structure which can avoid delamination provided by the embodiment of the utility model.

[0018] Figure 6 It is the assembling front perspective enlarged view of the vehicle-mounted backlight bubble cotton optimization structure which can avoid delamination provided by the embodiment of the utility model. CONCRETE IMPLEMENTING METHOD

[0019] In order to make the purpose, technical scheme and advantage of the embodiment of the utility model more clear, the technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making the creative labor belong to the protection scope of the utility model.

[0020] Please refer to Figure 3 The embodiment of the utility model provides a vehicle-mounted backlight bubble cotton optimization structure which can avoid delamination, comprising upper protective film 1, first double-sided adhesive tape 2, bubble cotton 3, second double-sided adhesive tape 4, lower protective film 5, the following will be described in detail to each component part of the embodiment in combination with the drawings.

[0021] As Figure 3 Indicated, the upper and lower surfaces of the first double-sided adhesive tape 2 can be adhered with the upper protective film 1 and one surface of the bubble cotton 3 through the adhesion of itself respectively, the upper and lower surfaces of the second double-sided adhesive tape 4 are adhered with the other surface of the bubble cotton 3 and the lower protective film 5 through the adhesion of itself respectively.

[0022] As Figure 4 Indicated, the length of the bubble cotton 3, the second double-sided adhesive tape 4 and the lower protective film 5 can be consistent, the end of the first double-sided adhesive tape 2 is shortened by a distance relative to the end of the upper protective film 1 and the bubble cotton 3 and forms a gap at the position, the end of the upper protective film 1 is set as pull bar 11 by extending a part of the bubble cotton 3, the pull bar 11 is separated from the adhesive surface of the first double-sided adhesive tape 2.

[0023] In the embodiment, the end of the first double-sided adhesive tape 2 is shortened by 1-2mm relative to the end of the upper protective film 1, the bubble cotton 3, the second double-sided adhesive tape 4 and the lower protective film 5.

[0024] In practical implementation, Laba 11 can easily grasp and tear off the upper protective film 1. The notch 20 between the first double-sided adhesive 2 and the upper protective film 1 and foam 3 can prevent the first double-sided adhesive 2 from overflowing at the die-cutting mark 02, ensuring that there is no direct adhesion between the foam 3 and the upper protective film 1 at this position. When tearing off the upper protective film 1, it can also effectively prevent stress concentration at this position, preventing the foam 3 and the first double-sided adhesive 2 from being taken away together by the upper protective film 1, thereby avoiding tearing and delamination of the foam 3.

[0025] Both the upper protective film 1 and the lower protective film 5 can be made into transparent PET release films. The PET release film can be used as a protective layer to prevent the adhesive surface from being contaminated during transportation and storage, and will not leave any residue when peeled off, thus protecting the integrity of the adhesive material.

[0026] like Figure 5 and Figure 6 As shown, the widths of the first double-sided adhesive 2, foam 3, and second double-sided adhesive 4 can be the same. Furthermore, the shape and size of foam 3 and second double-sided adhesive 4 can be identical.

[0027] Preferably, foam 3 can be PU foam, EVA foam, or PE foam. In this embodiment, PU foam is preferred. PU foam can absorb and cushion vibrations, protect the vehicle backlight and display screen, and has a certain sealing effect, which can prevent dust and moisture from entering the device and extend the service life of the device.

[0028] Furthermore, the first double-sided adhesive 2 and the second double-sided adhesive 4 can be respectively set as acrylic pressure-sensitive adhesive, elastomer pressure-sensitive adhesive or resin pressure-sensitive adhesive.

[0029] Among them, elastomer-type pressure-sensitive adhesives can provide effective cushioning for backlight foam, absorbing shock and vibration and improving overall stability; resin-type pressure-sensitive adhesives can adjust adhesion and elasticity according to specific needs, and can provide strong durability and stability when used in backlight foam adhesives.

[0030] In this embodiment, the first double-sided adhesive 2 and the second double-sided adhesive 4 are preferably acrylic pressure-sensitive adhesives. Acrylic pressure-sensitive adhesives have good transparency, are not prone to yellowing, can maintain the backlight effect, have strong adhesion, have good bonding effect on metal and plastic surfaces, and have excellent temperature resistance and weather resistance, making them suitable for long-term use.

[0031] In summary, the utility model discloses through the first double -sided adhesive tape between upper protective film and bubble cotton to shorten to the inside, and form the gap, and the user can quickly snatch the upper protective film of laba and tear off the upper protective film, this gap design can avoid the first double -sided adhesive tape at the die cutting cutter mark overflow, ensure that bubble cotton and upper protective film between this position do not have direct adhesion, can prevent tearing and delamination phenomenon when tearing film bubble cotton is taken away by the first double -sided adhesive tape and leads to, significantly reduce the probability of operation failure, guarantee the performance of vehicle-mounted backlight bubble cotton, improve the work efficiency and the convenience of operation.

[0032] The above embodiment is the preferred embodiment of the utility model, but the embodiment of the utility model is not limited by the above embodiment, and any change, modification, replacement, combination, simplification made without departing from the spirit and principle of the utility model should be an equivalent replacement mode, which is included in the protection scope of the utility model.

Claims

1. An optimized structure for automotive backlight foam that avoids delamination, characterized in that: The application relates to a protective film for a mobile phone, which comprises an upper protective film (1), a first double-sided adhesive tape (2), foam (3), a second double-sided adhesive tape (4) and a lower protective film (5), wherein the upper and lower surfaces of the first double-sided adhesive tape (2) are respectively bonded to the upper protective film (1) and one surface of the foam (3) through the self-adhesion of the first double-sided adhesive tape (2), the upper and lower surfaces of the second double-sided adhesive tape (4) are respectively bonded to the other surface of the foam (3) and the lower protective film (5) through the self-adhesion of the second double-sided adhesive tape (4), the foam (3), the second double-sided adhesive tape (4) and the lower protective film (5) have the same length, the end of the first double-sided adhesive tape (2) is inwardly shortened by a distance relative to the end of the upper protective film (1) and the foam (3) and a notch (20) is formed at the position, and the end of the upper protective film (1) extends out of a part of the foam (3) and is provided as a pull bar (11), wherein the pull bar (11) is separated from the adhesive surface of the first double-sided adhesive tape (2).

2. The delamination-avoiding vehicle-mounted backlight bubble cotton optimized structure according to claim 1, characterized in that: The first double-sided adhesive tape (2) has the same width as the foam (3) and the second double-sided adhesive tape (4).

3. The delamination-avoiding vehicle-mounted backlight bubble cotton optimized structure according to claim 1, characterized in that: The foam (3) has the same shape and size as the second double-sided adhesive tape (4).

4. The delamination-avoiding vehicle backlight bubble cotton optimized structure according to claim 1, characterized in that: The foam (3) is provided as PU foam, EVA foam or PE foam.

5. The delamination-avoiding vehicle backlight bubble cotton optimized structure according to claim 1, characterized in that: The upper protective film (1) and the lower protective film (5) are both provided as transparent PET release film.

6. The delamination-avoiding vehicle backlight bubble cotton optimized structure according to claim 1, characterized in that: The first double-sided adhesive tape (2) and the second double-sided adhesive tape (4) are respectively provided as acrylic pressure-sensitive adhesive, elastomer pressure-sensitive adhesive or resin pressure-sensitive adhesive.

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