A double-cured heat-pressed insulation film for FFC

Abstract

The utility model relates to a hot -pressing insulation film technical field provides a double solidification hot -pressing insulation film for FFC, including insulation film body, the top of insulation film body is provided with solidification structure, the bottom of insulation film body is provided with anti -jamming structure. The utility model discloses be provided with the protection structure, through the temperature resistance adhesive layer itself has certain elasticity, can further absorb the thermal stress or the thermal stress, mechanical stress generated in use, reduce stress concentration, under the action of the protective layer, can directly resist the physical damage such as external scratch, extrusion, protect internal conductor and insulation film structure, under the action of the wear -resisting layer, make it can absorb external vibration and impact, reduce the stress transmission of internal conductor and insulation film body, have good sealing simultaneously, can block the invasion of moisture, dust, oil stain etc. in FFC inside, realized the device convenient scratch -proof, extrusion's function, thereby prolonged the service life of this double solidification hot -pressing insulation film for FFC when using.

Description

Technical Field

[0001] This utility model relates to the field of hot-pressed insulating film technology, and in particular to a dual-curing hot-pressed insulating film for FFC. Background Technology

[0002] Hot-pressed insulation film is a composite structure that tightly bonds insulating material to FFC cable through a hot-pressing process. It is mainly used in power transmission and electronic equipment to achieve insulation protection for current transmission. Therefore, a dual-curing hot-pressed insulation film for FFC is used.

[0003] Traditional dual-cured thermoforming insulating films used in FFCs have insufficient protective measures and are not easy to resist physical damage such as scratches and compression, thus making it difficult to extend their service life. Utility Model Content

[0004] The purpose of this invention is to provide a dual-curing thermo-pressed insulating film for FFC, in order to solve the shortcomings of existing dual-curing thermo-pressed insulating films for FFC in terms of protective measures.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a dual-curing hot-pressing insulating film for FFC, comprising an insulating film body;

[0006] The top of the insulating film body is provided with a curing structure;

[0007] The bottom end of the insulating film body is provided with an anti-interference structure, and the bottom end of the anti-interference structure is provided with a protective structure.

[0008] The protective structure includes a heat-resistant adhesive layer fixed to the bottom of the anti-interference structure, a protective layer is bonded to the bottom of the heat-resistant adhesive layer, and a wear-resistant layer is bonded to the bottom of the protective layer.

[0009] When using this device, the protective structure provides protection against scratches and pressure, thus extending the service life of the dual-cured hot-pressed insulating film for FFC. The anti-interference structure provides protection against electromagnetic interference, improving the applicability of the dual-cured hot-pressed insulating film for FFC. The curing structure provides flame retardancy, resistance to high temperature and humidity, and resistance to thermal shock, thus improving the stability of the dual-cured hot-pressed insulating film for FFC during use.

[0010] Preferably, the anti-interference structure includes an aluminum foil, a conductive cloth, and a shielding layer. The aluminum foil is fixed to the bottom end of the insulating film body, the conductive cloth is bonded to the bottom end of the aluminum foil, and the shielding layer is bonded to the bottom end of the conductive cloth.

[0011] Preferably, the shielding layer is actually a metal mesh. With the help of the aluminum foil, it serves as a shield, and at the same time, the aluminum foil can reflect some electromagnetic radiation, reducing interference signals penetrating into the interior, thereby protecting the signals transmitted within the FFC from external electromagnetic interference.

[0012] Preferably, the bottom end of the shielding layer is fixedly connected to the top end of the heat-resistant adhesive layer. With the help of the conductive cloth, the FFC can maintain continuous conductivity and shielding effect even when bent or twisted. Furthermore, the shielding layer can effectively block electromagnetic interference.

[0013] Preferably, the protective layer is actually a polyimide layer. The heat-resistant adhesive layer itself has a certain degree of elasticity, which can further absorb the thermal and mechanical stress generated during hot pressing or use, reducing stress concentration. Under the action of the protective layer, it can directly resist physical damage such as external scratches and compression, protecting the internal wires and insulating film structure, and extending the service life of the FFC.

[0014] Preferably, the wear-resistant layer is actually a silicone rubber layer. Under the action of the wear-resistant layer, it can absorb external vibrations and impacts, reduce stress transmission to the internal wires and insulating film, and at the same time have good sealing properties, preventing moisture, dust, oil, and other contaminants from entering the FFC.

[0015] Preferably, the cured structure includes a photocurable polyester resin, acrylic rubber, epoxy resin, a photoinitiator, a curing agent, and a flame retardant. The photocurable polyester resin is fixed to the top of the insulating film body. Acrylic rubber is bonded to the top of the photocurable polyester resin. Epoxy resin is bonded to the top of the acrylic rubber. A photoinitiator is bonded to the top of the epoxy resin. A curing agent is bonded to the top of the photoinitiator. A flame retardant is bonded to the top of the curing agent. Performance optimization is achieved through photocuring and thermocuring. Photocuring allows the insulating film body to quickly set, while thermocuring forms a stable cross-linked structure, improving the insulating film body's resistance to high temperature and humidity, thermal shock resistance, and flame retardancy.

[0016] The present invention provides a dual-curing thermo-pressed insulating film for FFC, which has the following advantages:

[0017] By incorporating a protective structure and utilizing the inherent elasticity of the heat-resistant adhesive layer, the thermal and mechanical stresses generated during hot pressing or use can be further absorbed, reducing stress concentration. Under the protection of the protective layer, it can directly resist physical damage such as external scratches and compressions, protecting the internal wires and insulation film structure and extending the service life of the FFC. Under the protection of the wear-resistant layer, it can absorb external vibrations and impacts, reducing stress transmission to the internal wires and insulation film. At the same time, it has good sealing properties, preventing moisture, dust, oil, and other contaminants from entering the FFC. This device achieves the function of easy scratch and compression protection, thereby extending the service life of the dual-cured hot-pressed insulation film used for FFC.

[0018] By incorporating an anti-interference structure, the aluminum foil acts as a shield, reflecting some electromagnetic radiation and reducing interference signals from penetrating the interior. This protects the signals transmitted within the FFC from external electromagnetic interference. The conductive cloth maintains continuous conductivity and shielding even when the FFC is bent or twisted. The shielding layer effectively blocks electromagnetic interference, thus enhancing the applicability of the dual-curing thermopressed insulating film used in FFCs.

[0019] By incorporating a curing structure, a photocurable polyester resin, acrylic rubber, epoxy resin, photoinitiator, curing agent, and flame retardant are sequentially applied to the top of the insulating film body, ensuring uniform coverage. Performance optimization is achieved through photocuring and thermocuring. Photocuring rapidly sets the insulating film body, while thermocuring forms a stable cross-linked structure, improving the insulating film body's resistance to high temperatures and humidity, thermal shock resistance, and flame retardancy. This device achieves flame retardancy, resistance to high temperatures and humidity, and resistance to thermal shock, thereby enhancing the stability of the dual-curing thermopressed insulating film used in FFC during use. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the solidified structure of this utility model after explosion.

[0023] Figure 4 This is a three-dimensional structural diagram of the anti-interference structure of this utility model.

[0024] Figure 5 This is a three-dimensional structural diagram of the protective structure of this utility model in the event of an explosion.

[0025] The following are the annotations in the figure: 1. Insulating film body; 2. Anti-interference structure; 201. Aluminum foil; 202. Conductive cloth; 203. Shielding layer; 3. Protective structure; 301. Temperature resistant adhesive layer; 302. Protective layer; 303. Wear resistant layer; 4. Curing structure; 401. Photocurable polyester resin; 402. Acrylic rubber; 403. Epoxy resin; 404. Photoinitiator; 405. Curing agent; 406. Flame retardant. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-5 This utility model provides a dual-curing hot-press insulating film for FFC, comprising an insulating film body 1, a curing structure 4 disposed at the top end of the insulating film body 1, the curing structure 4 comprising a photocurable polyester resin 401, an acrylic rubber 402, an epoxy resin 403, a photoinitiator 404, a curing agent 405, and a flame retardant 406, the photocurable polyester resin 401 being fixed to the top end of the insulating film body 1, the acrylic rubber 402 being bonded to the top end of the photocurable polyester resin 401, the epoxy resin 403 being bonded to the top end of the acrylic rubber 402, the photoinitiator 404 being bonded to the top end of the epoxy resin 403, the curing agent 405 being bonded to the top end of the photoinitiator 404, and the flame retardant 406 being bonded to the top end of the curing agent 405.

[0028] Reference Figure 2 and Figure 3 As shown, when exposed to UV light, the photoinitiator 404 absorbs light energy and undergoes decomposition or charge transfer, which can trigger a rapid crosslinking reaction of the photocurable polyester resin 401, achieving rapid preliminary shaping of the insulating film body 1 and meeting the short-time pre-fixation requirements in FFC production. After photocuring, high temperature is applied through a hot pressing process, causing the epoxy resin 403 and the curing agent 405 to undergo a condensation reaction, forming a three-dimensional network crosslinked structure. At the same time, the incompletely reacted photocurable polyester resin 401 can form an interpenetrating network with the epoxy resin 403, strengthening the intermolecular bonding, thereby improving the high temperature and humidity resistance, thermal shock resistance, and flame retardancy of the insulating film body 1.

[0029] An anti-interference structure 2 is provided at the bottom of the insulating film body 1. The anti-interference structure 2 includes an aluminum foil 201, a conductive cloth 202, and a shielding layer 203. The aluminum foil 201 is fixed to the bottom of the insulating film body 1. The conductive cloth 202 is bonded to the bottom of the aluminum foil 201. The shielding layer 203 is bonded to the bottom of the conductive cloth 202. The shielding layer 203 is actually a metal mesh. The bottom of the shielding layer 203 is fixedly connected to the top of the heat-resistant adhesive layer 301.

[0030] Reference Figure 1 and Figure 4 As shown, the aluminum foil 201 acts as a shield, and at the same time, the aluminum foil 201 can also reflect some electromagnetic radiation, reducing the penetration of interference signals into the interior, thereby protecting the signals transmitted inside the FFC from the influence of external electromagnetic interference. Under the action of the conductive cloth 202, it can still maintain continuous conductivity and maintain the shielding effect when the FFC is bent or twisted. The shielding layer 203 is actually a metal mesh, and under the action of the shielding layer 203, electromagnetic interference can be shielded.

[0031] The bottom end of the anti-interference structure 2 is provided with a protective structure 3. The protective structure 3 includes a heat-resistant adhesive layer 301 fixed to the bottom end of the anti-interference structure 2. A protective layer 302 is bonded to the bottom end of the heat-resistant adhesive layer 301. A wear-resistant layer 303 is bonded to the bottom end of the protective layer 302. The protective layer 302 is actually a polyimide layer, and the wear-resistant layer 303 is actually a silicone rubber layer.

[0032] Reference Figure 1 and Figure 5 As shown, the heat-resistant adhesive layer 301 itself has a certain elasticity, which can further absorb the thermal stress and mechanical stress generated during hot pressing or use, and reduce stress concentration. The protective layer 302 is actually a polyimide layer. Under the action of the protective layer 302, it can directly resist physical damage such as external scratches and extrusion, protect the internal wires and insulation film structure, and extend the service life of FFC. The wear-resistant layer 303 is actually a silicone rubber layer. Under the action of the wear-resistant layer 303, it can absorb external vibration and impact, reduce stress transmission to the internal wires and insulation film body 1, and at the same time have good sealing properties, which can prevent moisture, dust, oil and other contaminants from entering the interior of FFC.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dual-curing thermopressed insulating film for FFC, comprising an insulating film body (1); Its features are: The top end of the insulating film body (1) is provided with a curing structure (4); The bottom end of the insulating film body (1) is provided with an anti-interference structure (2), and the bottom end of the anti-interference structure (2) is provided with a protective structure (3); The protective structure (3) includes a heat-resistant adhesive layer (301) fixed to the bottom of the anti-interference structure (2), a protective layer (302) is bonded to the bottom of the heat-resistant adhesive layer (301), and a wear-resistant layer (303) is bonded to the bottom of the protective layer (302).

2. The dual-curing hot-pressed insulating film for FFC according to claim 1, characterized in that: The anti-interference structure (2) includes an aluminum foil (201), a conductive cloth (202), and a shielding layer (203). The aluminum foil (201) is fixed to the bottom end of the insulating film body (1). The bottom end of the aluminum foil (201) is bonded with the conductive cloth (202), and the bottom end of the conductive cloth (202) is bonded with the shielding layer (203).

3. The dual-curing hot-pressed insulating film for FFC according to claim 2, characterized in that: The shielding layer (203) is actually a metal mesh.

4. The dual-curing thermo-pressed insulating film for FFC according to claim 2, characterized in that: The bottom end of the shielding layer (203) is fixedly connected to the top end of the heat-resistant adhesive layer (301).

5. The dual-curing thermo-pressed insulating film for FFC according to claim 1, characterized in that: The protective layer (302) is actually a polyimide layer.

6. The dual-curing thermo-pressed insulating film for FFC according to claim 1, characterized in that: The wear-resistant layer (303) is actually a silicone rubber layer.

7. The dual-curing thermo-pressed insulating film for FFC according to claim 1, characterized in that: The cured structure (4) includes a photocurable polyester resin (401), an acrylic rubber (402), an epoxy resin (403), a photoinitiator (404), a curing agent (405), and a flame retardant (406). The photocurable polyester resin (401) is fixed to the top of the insulating film body (1). The top of the photocurable polyester resin (401) is bonded with an acrylic rubber (402). The top of the acrylic rubber (402) is bonded with an epoxy resin (403). The top of the epoxy resin (403) is bonded with a photoinitiator (404). The top of the photoinitiator (404) is bonded with a curing agent (405). The top of the curing agent (405) is bonded with a flame retardant (406).

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