Polyimide double-sided flexible copper-clad plate

Abstract

The utility model discloses a polyimide double-sided flexible copper-clad plate, which belongs to the technical field of flexible copper-clad plates, and comprises a winding drum body and a device body wound on the winding drum body, the device body comprises a double-sided flexible copper-clad plate body, the two sides of the double-sided flexible copper-clad plate body are each provided with an electroplating anti-corrosion layer through an electroplating technology, the sides, away from the double-sided flexible copper-clad plate body, of the two electroplating anti-corrosion layers are each fixedly connected with a double-sided adhesive layer, and the sides, away from the electroplating anti-corrosion layers, of the double-sided adhesive layers are fixedly connected with protective film layers. Edge sealing mechanisms are arranged on the two sides of the device body. According to the double-sided flexible copper-clad plate, the electroplated anti-corrosion layers are additionally arranged on the two sides of the double-sided flexible copper-clad plate body, the anti-corrosion protection effect is achieved, compared with a paint coating, the adhesive force is higher, the double-sided flexible copper-clad plate cannot be broken due to bending, the protection effect is guaranteed, and the protection effect can be further improved and the service life can be prolonged by additionally arranging the protective film layer.

Description

Technical Field

[0001] The utility model relates to the technical field of flexible copper-clad laminates, in particular to a polyimide double-sided flexible copper-clad laminate. Background Art

[0002] Polyimide is resistant to high and low temperatures, has good dielectric properties and high mechanical strength, is resistant to hydrolysis, acid and alkali corrosion, and is self-extinguishing. It is one of the good copper clad laminate substrates. Polyimide flexible copper clad laminate integrates the advantages of polyimide and is one of the most commonly used copper clad laminates in actual industrial production. It is often used in various electronic products, flexible and bendable equipment, and aerospace fields. Polyimide often needs to add inorganic thermal conductive fillers to improve its thermal conductivity and heat dissipation in order to better meet the high-frequency, miniaturization, and integration application requirements of the electronics industry.

[0003] In a known Chinese patent for a high-performance polyimide flexible double-sided copper-clad laminate (patent number: CN216659140U), the device includes a sleeve, a main body is installed on the surface of the sleeve, an anti-corrosion structure is arranged on the surface of the main body, the anti-corrosion structure includes a special-shaped groove, the special-shaped groove is arranged on the surface of the main body, the top of the special-shaped groove is coated with a primer layer, a conductive warp is installed inside the chamber, a bottom layer is arranged at the bottom end of the bonding conductive structure, and a corrosion-resistant coating is coated on the top of the primer layer. The device is coated on the surface of the main body by the primer layer to make the corrosion-resistant The corrosion-resistant coating is fixed on the top of the primer layer. When the corrosion-resistant coating and the primer layer are arranged on the surface of the main body, the main body is isolated from external objects and air, avoiding oxidation corrosion on the surface after the external air and objects directly contact the main body, thereby enhancing the service life of the main body in daily use. However, the device increases the corrosion resistance of the device surface by coating the anti-corrosion coating on both sides of the polyimide flexible double-sided copper clad laminate. The structure is relatively simple, and the paint coating is easily broken and fractured due to multiple bending of the polyimide double-sided flexible copper clad laminate, thereby affecting the protection effect and short service life. Utility Model Content

[0004] In view of the above-mentioned technical deficiencies, the purpose of the utility model is to provide a polyimide double-sided flexible copper clad laminate, which adds an electroplating anti-corrosion layer on both sides of the double-sided flexible copper clad laminate body by an electroplating process, which not only plays an anti-corrosion protection role, but also has stronger adhesion than the paint coating, and will not break or fracture due to bending, thereby ensuring the protection effect. Secondly, a protective film layer is adhered and fixed to the outer side of the electroplating anti-corrosion layer through a double-sided adhesive layer, which can further improve the multifunctional protection effect of the double-sided flexible copper clad laminate body and extend the service life of the device body; it solves the problem that the prior art structure proposed in the background technology is relatively simple, and the paint coating is easily broken or fractured due to multiple bending of the polyimide double-sided flexible copper clad laminate, thereby affecting the protection effect and short service life.

[0005] In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme: The utility model provides a polyimide double-sided flexible copper clad laminate, comprising: a drum body and a device body wound on the drum body, the device body comprising a double-sided flexible copper clad laminate body, both sides of the double-sided flexible copper clad laminate body are provided with an electroplating anti-corrosion layer through an electroplating process, the two electroplating anti-corrosion layers are fixedly connected with a double-sided adhesive layer on one side away from the double-sided flexible copper clad laminate body, the double-sided adhesive layer is fixedly connected with a protective film layer on one side away from the electroplating anti-corrosion layer, and edge sealing mechanisms are provided on both sides of the device body.

[0006] Preferably, the edge sealing mechanism comprises an edge sealing strip clamped on the side wall of the device body, the upper and lower inner walls of the edge sealing strip abutting against the device body are fixedly connected with pressing rubber blocks, and the side wall of the device body is provided with a pressing groove corresponding to the pressing rubber block.

[0007] Preferably, the pressed adhesive block is arranged in a trapezoidal structure, the pressed groove matches the shape of the pressed adhesive block, and the cross section of the edge banding strip is arranged in a U-shaped structure.

[0008] Preferably, the protective film layer includes an insulating layer fixedly connected to the double-sided adhesive layer, the upper side wall of the insulating layer is fixedly connected to a flame retardant layer, the upper side wall of the flame retardant layer is fixedly connected to a waterproof layer, and the upper side wall of the waterproof layer is fixedly connected to a wear-resistant layer.

[0009] Preferably, evenly arranged positioning grooves are provided on the side wall where the electroplated anti-corrosion layer and the double-sided adhesive layer are bonded.

[0010] Preferably, a side wall on which the protective film layer is bonded to the double-sided adhesive layer is fixedly connected with evenly arranged positioning protrusions.

[0011] The beneficial effects of the utility model are:

[0012] 1. In the utility model, an electroplating anti-corrosion layer is added on both sides of the double-sided flexible copper clad laminate body by an electroplating process, which not only plays an anti-corrosion protection role, but also has stronger adhesion than a paint coating, and will not break or rupture due to bending, thereby ensuring the protection effect. Secondly, a protective film layer is adhered and fixed to the outer side of the electroplating anti-corrosion layer by a double-sided adhesive layer, which can further improve the multifunctional protection effect of the double-sided flexible copper clad laminate body and extend the service life of the device body.

[0013] 2. In the utility model, edge banding strips are arranged on both sides of the device body, and the edge banding strips are fixedly connected to the device body by means of a pressing adhesive block and a pressing groove for bonding. The connection is firm, the edge banding sealing effect is good, and the sealing protection effect on the device body is improved.

[0014] 3. In the utility model, by arranging evenly arranged retaining grooves on the side wall of the electroplating anti-corrosion layer and by arranging evenly arranged retaining protrusions on the side wall of the protective film layer, the electroplating anti-corrosion layer, the protective film layer and the double-sided adhesive layer can be more firmly adhered, have strong shear resistance, and are not easy to separate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 2 It is a structural schematic diagram of the device body in the utility model.

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the protective film layer in the utility model.

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the double-sided adhesive layer in the utility model.

[0020] Figure 5 It is a schematic diagram of the cross-sectional structure of the edge sealing mechanism in the utility model.

[0021] Explanation of the accompanying drawings: 1-roll body, 2-device body, 21-double-sided flexible copper clad laminate body, 22-electroplating anti-corrosion layer, 221-locking groove, 23-double-sided adhesive layer, 24-protective film layer, 241-insulating layer, 242-flame retardant layer, 243-waterproof layer, 244-wear-resistant layer, 245-locking protrusion, 3-edge sealing mechanism, 31-edge sealing strip, 32-pressing glue block, 33-pressing groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1:

[0024] like Figures 1 to 3 As shown, this embodiment provides a polyimide double-sided flexible copper clad laminate, comprising: a roll body 1 and a device body 2 wound on the roll body 1, the device body 2 comprises a double-sided flexible copper clad laminate body 21, both sides of the double-sided flexible copper clad laminate body 21 are provided with electroplating anti-corrosion layers 22 through an electroplating process, the two electroplating anti-corrosion layers 22 are fixedly connected with double-sided adhesive layers 23 on one side away from the double-sided flexible copper clad laminate body 21, the double-sided adhesive layer 23 is fixedly connected with a protective film layer 24 on one side away from the electroplating anti-corrosion layer 22, and edge sealing mechanisms 3 are provided on both sides of the device body 2.

[0025] The protective film layer 24 includes an insulating layer 241 fixedly connected to the double-sided adhesive layer 23, which is made of polystyrene film material and has an insulating protection effect. The upper side wall of the insulating layer 241 is fixedly connected with a flame retardant layer 242, which is made of polypropylene flame retardant film material and has a flame retardant protection effect. The upper side wall of the flame retardant layer 242 is fixedly connected with a waterproof layer 243, which is made of polytetrafluoroethylene waterproof film material and has a waterproof protection effect. The upper side wall of the waterproof layer 243 is fixedly connected with a wear-resistant layer 244, which is made of TPU material and has a wear-resistant protection effect.

[0026] Principle of this embodiment: By using the electroplating process to add an electroplating anti-corrosion layer 22 on both sides of the double-sided flexible copper clad laminate body 21, it not only plays an anti-corrosion protection role, but also has stronger adhesion than paint coatings, and will not break or rupture due to bending, thereby ensuring the protection effect. Secondly, a protective film layer 24 is adhered and fixed to the outer side of the electroplating anti-corrosion layer 22 through a double-sided adhesive layer 23, which can further improve the multifunctional protection effect of the double-sided flexible copper clad laminate body 21 and extend the service life of the device body 2.

[0027] Embodiment 2:

[0028] like Figure 5 As shown, on the basis of retaining all the technical features in the specific embodiment one, in this embodiment: the edge sealing mechanism 3 includes an edge sealing strip 31 clamped on the side wall of the device body 2, and the inner walls at the upper and lower ends of the edge sealing strip 31 that abut against the device body 2 are fixedly connected with pressing glue blocks 32, and the side wall of the device body 2 is provided with a pressing groove 33 corresponding to the pressing glue block 32.

[0029] The pressed adhesive block 32 is arranged in a trapezoidal structure, the pressed groove 33 matches the shape of the pressed adhesive block 32, and the cross section of the edge banding strip 31 is arranged in a U-shaped structure, so that the connection is more secure.

[0030] Principle of this embodiment: by arranging edge banding strips 31 on both sides of the device body 2, and by engaging and bonding the pressing adhesive block 32 with the pressing groove 33, the edge banding strip 31 is fixedly connected to the device body 2, the connection is firm, the edge banding sealing effect is good, and the sealing protection effect of the device body 2 is improved.

[0031] Embodiment three:

[0032] like Figure 4 As shown, on the basis of retaining all the technical features in specific embodiment one and / or embodiment two, in this embodiment: a side wall on which the electroplated anti-corrosion layer 22 and the double-sided adhesive layer 23 are bonded is provided with evenly arranged positioning grooves 221.

[0033] The side wall of the protective film layer 24 that is in contact with the double-sided adhesive layer 23 is fixedly connected with evenly arranged positioning protrusions 245 .

[0034] Principle of this embodiment: By providing evenly arranged locking grooves 221 on the side walls of the electroplated anti-corrosion layer 22, and by providing evenly arranged locking protrusions 245 on the side walls of the protective film layer 24, the electroplated anti-corrosion layer 22, the protective film layer 24 and the double-sided adhesive layer 23 can be more firmly adhered, have strong shear resistance, and are not easy to separate.

[0035] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A polyimide double-sided flexible copper-clad laminate, characterized in that: include: A reel body (1) and a device body (2) wound on the reel body (1), wherein the device body (2) comprises a double-sided flexible copper-clad laminate body (21), both sides of the double-sided flexible copper-clad laminate body (21) are provided with an electroplating anti-corrosion layer (22) through an electroplating process, both sides of the electroplating anti-corrosion layers (22) are fixedly connected with a double-sided adhesive layer (23) on the side away from the double-sided flexible copper-clad laminate body (21), and a protective film layer (24) is fixedly connected with the side of the double-sided adhesive layer (23) away from the electroplating anti-corrosion layer (22), and both sides of the device body (2) are provided with an edge sealing mechanism (3).

2. A polyimide double-sided flexible copper clad laminate as claimed in claim 1, characterized in that: The edge sealing mechanism (3) comprises an edge sealing strip (31) clamped on the side wall of the device body (2); the inner walls at both upper and lower ends of the edge sealing strip (31) abutting against the device body (2) are fixedly connected with pressing rubber blocks (32); and the side wall of the device body (2) is provided with a pressing groove (33) corresponding to the pressing rubber block (32).

3. A polyimide double-sided flexible copper clad laminate as claimed in claim 2, characterized in that: The pressed adhesive block (32) is arranged in a trapezoidal structure, the pressed groove (33) matches the shape of the pressed adhesive block (32), and the cross section of the edge banding strip (31) is arranged in a U-shaped structure.

4. A polyimide double-sided flexible copper clad laminate as claimed in claim 1, characterized in that: The protective film layer (24) comprises an insulating layer (241) fixedly connected to the double-sided adhesive layer (23); the upper side wall of the insulating layer (241) is fixedly connected to a flame retardant layer (242); the upper side wall of the flame retardant layer (242) is fixedly connected to a waterproof layer (243); and the upper side wall of the waterproof layer (243) is fixedly connected to a wear-resistant layer (244).

5. A polyimide double-sided flexible copper clad laminate as claimed in claim 1, characterized in that: The side wall on which the electroplated anti-corrosion layer (22) and the double-sided adhesive layer (23) are bonded is provided with evenly arranged positioning grooves (221).

6. A polyimide double-sided flexible copper clad laminate as claimed in claim 1, characterized in that: A side wall on which the protective film layer (24) and the double-sided adhesive layer (23) are bonded is fixedly connected with evenly arranged positioning protrusions (245).

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