Waterproof removable foam double faced adhesive tape

Abstract

The utility model discloses a waterproof removable foam double faced adhesive tape. Comprising a PET base material layer, a first common acrylic acid adhesive layer arranged on the upper end face of the PET base material layer, a second common acrylic acid adhesive layer arranged on the lower end face of the PET base material layer, a first PE foam layer arranged on the upper end face of the first common acrylic acid adhesive layer and a second PE foam layer arranged on the lower end face of the second common acrylic acid adhesive layer. The high-temperature visbreaking acrylic acid adhesive is arranged on the upper end face of the first PE foam layer, the high-temperature high-viscosity acrylic acid adhesive layer is arranged on the lower end face of the second PE foam layer, the first release film is arranged on the upper end face of the high-temperature visbreaking acrylic acid adhesive layer, and the second release film is arranged on the lower end face of the high-temperature high-viscosity acrylic acid adhesive layer. The first PE foam layer and the second PE foam layer are both closed-cell foam. The high-temperature visbreaking acrylic adhesive has the advantages that the adhesive force is reduced at high temperature, and the high-temperature visbreaking acrylic adhesive can be easily removed during repair. The first PE foam layer and the second PE foam layer are both closed-cell foam, and the waterproof, impact-resistant, corrosion-resistant and strong-adhesion effects can be achieved.

Description

Technical Field

[0001] The utility model relates to the field of adhesive tapes, in particular to a waterproof and removable foam double-sided adhesive tape. Background Art

[0002] With the popularization of the Internet era, mobile phones have become an indispensable item in our daily lives, and the middle frame and back cover of mobile phones are important parts of the mobile phone structure. The middle frame is located between the mobile phone screen and the back cover, and is a frame that carries various internal parts. It is used to protect the internal parts and screen of the mobile phone. The connection between the back shell and the middle frame of mobile phones on the market is currently mainly PE foam double-sided adhesive. However, due to the low tensile strength of PE foam, the factory cannot completely remove the PE foam double-sided adhesive when using it, and it is easy to break when removing it, resulting in the inability to rework and produce. When other materials are used to connect the back shell and the middle frame of the mobile phone, it is difficult to achieve a good waterproof effect.

[0003] In view of this, it is necessary to provide a waterproof and removable foam double-sided adhesive. Summary of the invention

[0004] The utility model provides a waterproof and removable foam double-sided adhesive tape, which effectively solves the problem that the existing adhesive tape is not convenient for disassembly and maintenance and is not waterproof when bonding the back cover and the middle frame of a mobile phone.

[0005] The technical solution adopted by the utility model is

[0006] A waterproof and removable foam double-sided adhesive comprises a PET substrate layer, a No. 1 common acrylic adhesive layer arranged on the upper end surface of the PET substrate layer, a No. 2 common acrylic adhesive layer arranged on the lower end surface of the PET substrate layer, a No. 1 PE foam layer arranged on the upper end surface of the No. 1 common acrylic adhesive layer, a No. 2 PE foam layer arranged on the lower end surface of the No. 2 common acrylic adhesive layer, a high-temperature viscosity-reducing acrylic adhesive arranged on the upper end surface of the No. 1 PE foam layer, a high-temperature high-viscosity acrylic adhesive layer arranged on the lower end surface of the No. 2 PE foam layer, a No. 1 release film arranged on the upper end surface of the high-temperature viscosity-reducing acrylic adhesive layer, and a No. 2 release film arranged on the lower end surface of the high-temperature high-viscosity acrylic adhesive layer, wherein the No. 1 PE foam layer and the No. 2 PE foam layer are both closed-cell foams.

[0007] Furthermore, the thickness of the No. 1 common acrylic adhesive layer and the No. 2 common acrylic adhesive layer is the same, and the thickness of the No. 1 common acrylic adhesive layer ranges from 0.010 mm to 0.025 mm.

[0008] Furthermore, the thickness of the No. 1 PE foam layer and the No. 2 PE foam layer is the same, and the thickness of the No. 1 PE foam layer ranges from 0.05 mm to 0.075 mm.

[0009] Furthermore, the high temperature viscosity-reducing acrylic adhesive layer and the high temperature high viscosity acrylic adhesive layer have the same thickness, and the thickness of the high temperature viscosity-reducing acrylic adhesive layer ranges from 0.03 mm to 0.07 mm.

[0010] Furthermore, the thickness of the PET substrate layer ranges from 0.006 mm to 0.025 mm.

[0011] Furthermore, the thickness of the No. 1 release film and the No. 2 release film ranges from 0.025 mm to 0.05 mm.

[0012] Beneficial effects of the utility model: the PET substrate layer and the No. 1 PE foam layer are fixed by the No. 1 ordinary acrylic adhesive layer, the No. 2 ordinary acrylic adhesive layer fixes the PET substrate layer and the No. 2 PE foam layer, the high-temperature viscosity-reducing acrylic adhesive layer fixes the No. 1 PE foam layer and the No. 1 release film layer, the high-temperature high-viscosity acrylic adhesive layer fixes the No. 2 PE foam layer and the No. 2 release film layer, the No. 1 ordinary acrylic adhesive layer, the No. 2 ordinary acrylic adhesive layer, the high-temperature viscosity-reducing acrylic adhesive layer and the high-temperature high-viscosity acrylic adhesive layer have good bonding properties at room temperature, and the high-temperature viscosity-reducing acrylic adhesive has reduced bonding strength at high temperatures and can be easily removed during repair. The PET substrate layer provides support for the No. 1 PE foam layer and the No. 2 PE foam layer, increases the toughness of the foam double-sided adhesive during repair, and does not easily break the tape when removing the tape. The No. 1 PE foam layer and the No. 2 PE foam layer are both closed-cell foams, which can play the role of waterproofing, impact resistance, corrosion resistance, and strong bonding. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 An overall schematic diagram of the waterproof and removable foam double-sided adhesive tape provided in an embodiment of the present application.

[0014] The markings in the figure are: 1. PET substrate layer; 2. No. 1 ordinary acrylic adhesive layer; 3. No. 2 ordinary acrylic adhesive layer; 4. No. 1 PE foam layer; 5. No. 2 PE foam layer; 6. High-temperature viscosity-reducing acrylic adhesive layer; 7. High-temperature high-viscosity acrylic adhesive layer; 8. No. 1 release film; 9. No. 2 release film. DETAILED DESCRIPTION

[0015] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0016] like Figure 1As shown, the embodiment of the present application provides a waterproof removable foam double-sided adhesive, which includes a PET substrate layer 1, a No. 1 common acrylic adhesive layer 2 arranged on the upper end surface of the PET substrate layer 1, a No. 2 common acrylic adhesive layer 3 arranged on the lower end surface of the PET substrate layer 1, a No. 1 PE foam layer 4 arranged on the upper end surface of the No. 1 common acrylic adhesive layer 2, a No. 2 PE foam layer 5 arranged on the lower end surface of the No. 2 common acrylic adhesive layer 3, a high-temperature viscosity-reducing acrylic adhesive arranged on the upper end surface of the No. 1 PE foam layer 4, a high-temperature high-viscosity acrylic adhesive layer 7 arranged on the lower end surface of the No. 2 PE foam layer 5, a No. 1 release film 8 arranged on the upper end surface of the high-temperature viscosity-reducing acrylic adhesive layer 6, and a No. 2 release film 9 arranged on the lower end surface of the high-temperature high-viscosity acrylic adhesive layer 7. The No. 1 PE foam layer 4 and the No. 2 PE foam layer 5 are both closed-cell foams.

[0017] In actual use, the first release film 8 and the second release film 9 are torn off, so that the high-temperature high-viscosity acrylic adhesive layer 7 is bonded to the rear shell of the mobile phone, and the high-temperature viscosity-reducing acrylic adhesive layer 6 is bonded to the middle frame of the mobile phone. When maintenance is required, the viscosity of the high-temperature viscosity-reducing acrylic adhesive is reduced by increasing the temperature, so that the tape is separated from the middle frame of the mobile phone.

[0018] In the above design, the PET substrate layer 1 and the No. 1 PE foam layer 4 are fixed by the No. 1 ordinary acrylic adhesive layer 2, the No. 2 ordinary acrylic adhesive layer 3 fixes the PET substrate layer 1 and the No. 2 PE foam layer 5, the high-temperature viscosity-reducing acrylic adhesive layer 6 fixes the No. 1 PE foam layer 4 and the No. 1 release film 8 layer, and the high-temperature high-viscosity acrylic adhesive layer 7 fixes the No. 2 PE foam layer 5 and the No. 2 release film 9 layer. The No. 1 ordinary acrylic adhesive layer 2, the No. 2 ordinary acrylic adhesive layer 3, the high-temperature viscosity-reducing acrylic adhesive layer 6 and the high-temperature high-viscosity acrylic adhesive layer 7 have good bonding properties at room temperature. The high-temperature viscosity-reducing acrylic adhesive has reduced bonding strength at high temperatures and can be easily removed during repair. The PET substrate layer 1 provides support for the No. 1 PE foam layer 4 and the No. 2 PE foam layer 5, increases the toughness of the foam double-sided adhesive during repair, and the tape will not be easily pulled off when removing the tape. The No. 1 PE foam layer 4 and the No. 2 PE foam layer 5 are both closed-cell foams, which can play the role of waterproof, impact-resistant, corrosion-resistant, and strong bonding.

[0019] Specifically, the thickness of the first common acrylic adhesive layer 2 and the second common acrylic adhesive layer 3 are the same, and the thickness of the first common acrylic adhesive layer 2 is in the range of 0.010 mm to 0.025 mm.

[0020] In the above design, the thickness of the first ordinary acrylic adhesive layer 2 and the second ordinary acrylic adhesive layer 3 can meet the requirements of thinning the product, and can ensure sufficient bonding strength between the PET substrate layer 1 and the first PE foam layer 4 and the second PE foam layer 5.

[0021] Specifically, the No. 1 PE foam layer 4 and the No. 2 PE foam layer 5 have the same thickness, and the thickness of the No. 1 PE foam layer 4 ranges from 0.05 mm to 0.075 mm.

[0022] In the above design, the thickness of the No. 1 PE foam layer 4 and the No. 2 PE foam layer 5 can meet the requirements of excellent waterproof effect, and can ensure that the tape has good adhesion, impact resistance, sealing and chemical corrosion resistance, so that the middle frame and the back cover of the mobile phone fit tightly, while also preventing particles (dust, sand) and liquids (water, chemicals) from entering the interior of the mobile phone and causing damage to the interior of the mobile phone.

[0023] Specifically, the high temperature viscosity-reducing acrylic adhesive layer 6 and the high temperature high viscosity acrylic adhesive layer 7 have the same thickness, and the thickness of the high temperature viscosity-reducing acrylic adhesive layer 6 is in the range of 0.03 mm to 0.07 mm.

[0024] In the above design, the thickness of the high-temperature viscosity-reducing acrylic adhesive layer 6 and the high-temperature high-viscosity acrylic adhesive layer 7 can meet the requirement of thinning the product.

[0025] Specifically, the thickness of the PET substrate layer 1 is in the range of 0.006 mm to 0.025 mm.

[0026] In the above design, the thickness of the PET substrate layer 1 can effectively meet the requirements of product thinning and sufficient tensile strength.

[0027] Specifically, the thickness of the No. 1 release film 8 and the No. 2 release film 9 ranges from 0.025 mm to 0.05 mm.

[0028] In the above design, the thickness of the No. 1 release film 8 and the No. 2 release film 9 can effectively protect the high-temperature viscosity-reducing acrylic adhesive layer 6 and the high-temperature high-viscosity acrylic adhesive layer 7 .

[0029] To further explain in detail, it should be understood that the above is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A waterproof and removable foam double-sided adhesive tape, characterized in that: The invention comprises a PET substrate layer (1), a first common acrylic adhesive layer (2) arranged on the upper end surface of the PET substrate layer (1), a second common acrylic adhesive layer (3) arranged on the lower end surface of the PET substrate layer (1), a first PE foam layer (4) arranged on the upper end surface of the first common acrylic adhesive layer (2), a second PE foam layer (5) arranged on the lower end surface of the second common acrylic adhesive layer (3), a high-temperature viscosity-reducing acrylic adhesive arranged on the upper end surface of the first PE foam layer (4), a high-temperature high-viscosity acrylic adhesive layer (7) arranged on the lower end surface of the second PE foam layer (5), a first release film (8) arranged on the upper end surface of the high-temperature viscosity-reducing acrylic adhesive layer (6), and a second release film (9) arranged on the lower end surface of the high-temperature high-viscosity acrylic adhesive layer (7), wherein the first PE foam layer (4) and the second PE foam layer (5) are both closed-cell foams.

2. The waterproof removable foam double-sided adhesive tape according to claim 1, characterized in that: The thickness of the first common acrylic adhesive layer (2) and the second common acrylic adhesive layer (3) are the same, and the thickness of the first common acrylic adhesive layer (2) ranges from 0.010 mm to 0.025 mm.

3. The waterproof removable foam double-sided adhesive tape according to claim 1, characterized in that: The thickness of the No. 1 PE foam layer (4) and the No. 2 PE foam layer (5) is the same, and the thickness of the No. 1 PE foam layer (4) ranges from 0.05 mm to 0.075 mm.

4. The waterproof removable foam double-sided adhesive tape according to claim 1, characterized in that: The high temperature viscosity-reducing acrylic adhesive layer (6) and the high temperature high viscosity acrylic adhesive layer (7) have the same thickness, and the thickness of the high temperature viscosity-reducing acrylic adhesive layer (6) is in the range of 0.03 mm to 0.07 mm.

5. The waterproof removable foam double-sided adhesive tape according to claim 1, characterized in that: The thickness of the PET substrate layer (1) ranges from 0.006 mm to 0.025 mm.

6. The waterproof removable foam double-sided adhesive tape according to claim 1, characterized in that: The thickness of the No. 1 release film (8) and the No. 2 release film (9) ranges from 0.025 mm to 0.05 mm.

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