Copper-aluminum composite mylar adhesive tape

Abstract

The utility model relates to a copper-aluminum composite mylar adhesive tape, which comprises a PET (polyethylene terephthalate) layer, an aluminum foil layer, a copper foil layer, an ink layer, a matte oil layer, acrylic acid conductive adhesive and a release film layer, two surfaces of the PET layer are respectively attached to the aluminum foil layer and the copper foil layer through thermosetting adhesive layers, the ink layer is coated on the surface of the copper foil layer deviating from the PET layer, and the matte oil layer is coated on the release film layer. The surface, away from the copper foil layer, of the ink layer is coated with a matte oil layer, the surface, away from the PET layer, of the aluminum foil layer is coated with acrylic conductive adhesive, and a release film layer is attached to the surface, away from the aluminum foil layer, of the acrylic conductive adhesive. The copper-aluminum composite mylar adhesive tape not only has good light leakage prevention performance, but also has good protection, anti-static and electromagnetic shielding effects and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of Mylar tapes, in particular to a copper-aluminum composite Mylar tape. Background Art

[0002] With the popularization and democratization of modern technology, high-tech products have gradually penetrated into our lives. With the vigorous development of the automotive industry, the development of car displays is also changing with each passing day. Through the car display, you can read work emails, GPS navigation, real-time video and voice, listen to music, watch movies, etc. It can be easily done, bringing great convenience and fun to our work and life.

[0003] When the aluminum foil Mylar tape in the prior art is used on the backlight module of the automobile display screen, light leakage and the like easily occur, resulting in poor anti-static effect, poor electromagnetic shielding effect and other problems, and cannot be widely used in the field of vehicle-mounted screens. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a copper-aluminum composite Mylar tape, which not only has good light leakage prevention performance, but also has good protection, anti-static, electromagnetic shielding and other effects.

[0005] The utility model adopts the following technical solution to solve the technical problem: a copper-aluminum composite Mylar tape, comprising a PET layer, an aluminum foil layer, a copper foil layer, an ink layer, a matte oil layer, an acrylic conductive adhesive and a release film layer, wherein the two surfaces of the PET layer are respectively attached to the aluminum foil layer and the copper foil layer through a thermosetting adhesive layer.

[0006] The surface of the copper foil layer away from the PET layer is coated with an ink layer, and the surface of the ink layer away from the copper foil layer is coated with a matte oil layer.

[0007] The surface of the aluminum foil layer facing away from the PET layer is coated with acrylic conductive adhesive, and the surface of the acrylic conductive adhesive facing away from the aluminum foil layer is attached with a release film layer.

[0008] The copper-aluminum composite Mylar tape is based on a PET layer, with a copper foil layer attached to one side of the PET layer and an aluminum foil layer attached to the other side of the PET layer. The PET layer has excellent mechanical properties, chemical resistance and stability, the copper foil layer plays a certain role in shading, alcohol resistance, scratch resistance, support and shielding, and the aluminum foil layer plays a role in fixing, bonding and shading. The copper-aluminum composite Mylar tape not only has good anti-light leakage performance, but also has good protection, anti-static, electromagnetic shielding and other effects.

[0009] In one embodiment, the thickness of the PET layer of the copper-aluminum composite Mylar tape is 0.0045-0.03 mm.

[0010] In one of the embodiments, the thickness of the copper foil layer of the copper-aluminum composite Mylar tape is 0.006-0.01 mm.

[0011] In one of the embodiments, the thickness of the aluminum foil layer of the copper-aluminum composite Mylar tape is 0.006-0.012 mm.

[0012] In one embodiment, the PET layer of the copper-aluminum composite Mylar tape accounts for 14% of the total thickness, the copper foil layer accounts for 18% of the total thickness, and the aluminum foil layer accounts for 12% of the total thickness.

[0013] In one of the embodiments, the resistance of the acrylic conductive adhesive of the copper-aluminum composite Mylar tape is 25.4*25.4mm<0.05Ω.

[0014] The beneficial effects of this application are:

[0015] The present application provides a copper-aluminum composite Mylar tape, which uses a PET layer as a substrate, is formed by attaching a copper foil layer to one side of the PET layer, attaching an aluminum foil layer to the other side of the PET layer, coating an ink layer on the surface of the copper foil layer away from the PET layer, coating a matte oil layer on the ink layer, coating an acrylic conductive adhesive on the surface of the aluminum foil layer away from the PET layer, and attaching the tape to a backlight module of a car display screen through the acrylic conductive adhesive. The copper-aluminum composite Mylar tape not only has good shielding and weight reduction properties, but also has high viscosity and excellent conductive properties.

[0016] The copper-aluminum composite Mylar tape has a matte appearance, a glossiness GU value of 2.5±1, a flat surface without bumps and concave spots, can be seamlessly bonded to the backlight module of the car display, and has a good light-shielding effect.

[0017] The appearance of the copper-aluminum composite Mylar tape is alcohol-resistant. Use a cloth dipped in alcohol to wipe back and forth 30 times in 1 minute with a force of 300g, and there will be no glue color or dirt.

[0018] The copper-aluminum composite Mylar tape has a peeling force of more than 1400g / inch on SUS304 board at room temperature.

[0019] The copper-aluminum composite Mylar tape has a holding force of 1000g weight on the SUS304 plate for more than 48 hours at room temperature, and a holding force of 1000g weight on the SUS304 plate for more than 24 hours at a high temperature of 85°C.

[0020] The shielding effectiveness of the copper-aluminum composite Mylar tape is ≥95dB. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the copper-aluminum composite Mylar tape according to an embodiment of the present application;

[0022] in:

[0023] 1. PET layer; 2. Aluminum foil layer; 3. Copper foil layer; 4. Ink layer; 5. Matt oil layer; 6. Acrylic conductive adhesive;

[0024] 7. Release film layer; 8. Thermosetting adhesive layer. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0026] like Figure 1 As shown, an embodiment of the present application provides a copper-aluminum composite Mylar tape, comprising a PET layer 1, an aluminum foil layer 2, a copper foil layer 3, an ink layer 4, a matt oil layer 5, an acrylic conductive adhesive 6 and a release film layer 7, and the two surfaces of the PET layer 1 are respectively attached to the aluminum foil layer 2 and the copper foil layer 3 through a thermosetting adhesive layer 8.

[0027] The surface of the copper foil layer 3 facing away from the PET layer 1 is coated with an ink layer 4 , and the surface of the ink layer 4 facing away from the copper foil layer 3 is coated with a matt oil layer 5 .

[0028] The surface of the aluminum foil layer 2 facing away from the PET layer 1 is coated with an acrylic conductive adhesive 6 , and the surface of the acrylic conductive adhesive 6 facing away from the aluminum foil layer 2 is adhered with a release film layer 7 .

[0029] Specifically, one side of the PET layer 1 is attached to the copper foil layer 3 via a thermosetting adhesive layer 8, and the other side of the PET layer 1 is attached to the aluminum foil layer 2 via a thermosetting adhesive layer 8. The surface of the copper foil layer 3 facing away from the PET layer 1 is coated with an ink layer 4, and a matt oil layer 5 is coated on the ink layer 4. The surface of the aluminum foil layer 2 facing away from the PET layer 1 is coated with an acrylic conductive adhesive 6, and a release film layer 7 is attached to the acrylic conductive adhesive 6. The release film layer 7 is torn off, and the device is attached to the backlight module of the automobile display screen via the acrylic conductive adhesive 6.

[0030] The production process of copper-aluminum composite Mylar tape is as follows:

[0031] Step 1: Set the size of the PET layer 1 to 25.4mm*80mm, attach the copper foil layer 3 and the aluminum foil layer 2 to the two surfaces of the PET layer 1 through the thermosetting adhesive layer 8, and then place it at 23℃ / 50%RH for 24 hours to ensure that the copper foil layer 3 and the aluminum foil layer 2 are not warped, and then put it in an 80℃ oven for 4 hours to dry, and the warping height is less than 1mm. This step can ensure that the PET layer 1 is firmly attached to the copper foil layer 3 and the aluminum foil layer 2, and effectively avoid the occurrence of delamination, wrinkles, warping, etc.

[0032] Step 2: Coat the copper foil layer 3 with a black ink layer 4, then put it into an oven at a temperature of 80-100°C and a speed of 15-30M / min for drying, and then leave it at 60°C for 24 hours. This step improves the adhesion of the ink layer 4 to the copper foil layer 3.

[0033] Step 3: Coat the ink layer 4 with a transparent matt oil layer 5, then put it into an oven at a temperature of 80-100°C and a speed of 20-30M / min for drying, and then put it at 60°C for 24 hours. This step improves the adhesion of the matt oil layer 5 to the ink layer 4.

[0034] Step 4: Coat the aluminum foil layer 2 with black acrylic conductive adhesive 6, and then put it into an oven at a temperature of 80-130°C and a speed of 10-20M / min for drying, and then put it at 25°C for 120 hours. This step improves the adhesion of the acrylic conductive adhesive 6 to the aluminum foil layer 2.

[0035] The copper-aluminum composite Mylar tape prepared according to the above steps has no delamination or wrinkles between the laminated structures after aging at 85° C. / 85% RH / 240H, and the surface coating has normal adhesion.

[0036] In the above structure, the acrylic conductive adhesive 6 and the aluminum foil layer 2 form a path with good conductivity, and the copper foil layer 3 is compounded on the PET layer 1 to have good shielding and heat dissipation effects. The copper-aluminum composite Mylar tape not only has good shielding and weight reduction properties, but also has high viscosity and excellent conductivity.

[0037] like Figure 1 As shown, in one embodiment, the thickness of the PET layer 1 of the copper-aluminum composite Mylar tape is 0.0045-0.03 mm. The thickness can be 0.0045 mm, 0.007 mm, 0.01 mm, 0.03 mm, etc., preferably 0.007 mm PET layer 1, the PET layer 1 is a polyester tape. The PET layer 1 of this thickness has excellent mechanical properties, chemical resistance and stability.

[0038] like Figure 1 As shown, in one embodiment, the thickness of the copper foil layer 3 of the copper-aluminum composite Mylar tape is 0.006-0.01 mm. The thickness can be 0.006 mm, 0.008 mm, 0.009 mm, 0.01 mm, etc. The copper foil layer 3 of this thickness not only has a good heat dissipation effect, but also plays the role of shading, alcohol resistance, scratch resistance, support and shielding.

[0039] like Figure 1As shown, in one embodiment, the thickness of the aluminum foil layer 2 of the copper-aluminum composite Mylar tape is 0.006-0.012 mm. The thickness can be 0.006 mm, 0.009 mm, 0.011 mm, 0.012 mm, etc. The aluminum foil layer 2 of this thickness is not only light in material, but also plays the role of fixing, bonding, shading, etc.

[0040] like Figure 1 As shown, in one embodiment, the PET layer 1 of the copper-aluminum composite Mylar tape accounts for 14% of the total thickness, the copper foil layer 3 accounts for 18% of the total thickness, and the aluminum foil layer 2 accounts for 12% of the total thickness. The acrylic conductive adhesive 6 accounts for 30% of the total thickness, the two thermosetting adhesive layers 8 account for 12% of the total thickness, and the thickness of the ink layer 4 and the matt oil layer 5 account for 14% of the total thickness. The acrylic conductive adhesive 6 and the aluminum foil layer 2 are attached to form a path with good conductivity, and the copper foil layer 3 is compounded on the PET layer 1 to have good shielding and heat dissipation effects.

[0041] like Figure 1 As shown, in one embodiment, the resistance of the acrylic conductive adhesive 6 of the copper-aluminum composite Mylar tape is 25.4*25.4mm<0.05Ω. The acrylic conductive adhesive 6 with this resistance value forms a path with the aluminum foil layer 2 and has good conductivity.

[0042] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A copper-aluminum composite Mylar tape, characterized in that: The invention comprises a PET layer (1), an aluminum foil layer (2), a copper foil layer (3), an ink layer (4), a matte oil layer (5), an acrylic conductive adhesive (6) and a release film layer (7). The two surfaces of the PET layer (1) are respectively attached to the aluminum foil layer (2) and the copper foil layer (3) via a thermosetting adhesive layer (8). The surface of the copper foil layer (3) facing away from the PET layer (1) is coated with an ink layer (4), and the surface of the ink layer (4) facing away from the copper foil layer (3) is coated with a matte oil layer (5). The surface of the aluminum foil layer (2) facing away from the PET layer (1) is coated with an acrylic conductive adhesive (6), and the surface of the acrylic conductive adhesive (6) facing away from the aluminum foil layer (2) is adhered with a release film layer (7).

2. The copper-aluminum composite Mylar tape according to claim 1, characterized in that: The thickness of the PET layer (1) is 0.0045-0.03 mm.

3. The copper-aluminum composite Mylar tape according to claim 1, characterized in that: The thickness of the copper foil layer (3) is 0.006-0.01 mm.

4. The copper-aluminum composite Mylar tape according to claim 1, characterized in that: The thickness of the aluminum foil layer (2) is 0.006-0.012 mm.

5. The copper-aluminum composite Mylar tape according to claim 1, characterized in that: The PET layer (1) accounts for 14% of the total thickness, the copper foil layer (3) accounts for 18% of the total thickness, and the aluminum foil layer (2) accounts for 12% of the total thickness.

6. The copper-aluminum composite Mylar tape according to claim 1, characterized in that: The resistance of the acrylic conductive adhesive (6) is 25.4*25.4mm<0.05Ω.

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