Symmetrical protective adhesive film for FFC (flexible flat cable)

Abstract

The utility model discloses a symmetrical protective adhesive film for an FFC (flexible flat cable), which comprises an adhesive film body, a pre-folding line is arranged in the middle of the adhesive film body, and the adhesive film body is symmetrically divided into a first symmetrical area and a second symmetrical area about the pre-folding line. The first symmetrical area and the second symmetrical area each comprise a first adhesive area, a visible area, a second adhesive area and a handle area which are sequentially arranged in the direction close to the pre-folding line. According to the utility model, the symmetrical protective adhesive film can replace a reinforcing plate to play a role in protecting and fixing the golden finger, and the residual adhesive is not easy to remain at the golden finger, so that the subsequent use of the FFC is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of protective films, and particularly relates to a symmetrical protective film for FFC cables. Background Art

[0002] Flexible flat cable, also known as Flexible Flat Cable (FFC), is a new type of data cable formed by pressing PET insulating material and extremely thin tinned flat copper wire. It has the advantages of being soft, arbitrarily bendable and foldable, thin in thickness, small in volume, simple in connection, convenient in disassembly, and easy to solve electromagnetic shielding (EMI), etc., and is widely used in signal transmission and connection of various products.

[0003] A gold finger refers to a conductive contact piece arranged at the end of a cable. Since the surface of the conductive contact piece is gold-plated and the conductive contact pieces are arranged in a finger shape, it is called a "gold finger". Due to the flexible and arbitrarily bendable and foldable characteristics of the flexible flat cable, the gold finger is prone to deformation during the processes of processing, transfer and transportation, which will cause difficulties in welding and affect the processing efficiency.

[0004] In order to enhance the structural strength of the gold finger, the prior art will attach a reinforcing plate at the gold finger or paste a whole piece of sticky single-layer film at the gold finger to ensure the plugging and unplugging of the FFC cable; the process of attaching the reinforcing plate is very cumbersome, and it is necessary to accurately attach the reinforcing plate to the end of the gold finger, which has the disadvantages of cumbersome processing and high production cost; the method of attaching the single-layer film has the disadvantages that it is not easy to tear off after being attached, and it is easy to leave residual glue on the surface of the gold finger after tearing off. Summary of the Utility Model

[0005] In view of this, the purpose of the present utility model is to overcome the problems existing in the prior art, and provide a symmetrical protective film for FFC cables. This symmetrical protective film can not only replace the reinforcing plate and play a role in protecting and fixing the gold finger, but also is not easy to leave residual glue at the gold finger, ensuring the subsequent use of the FFC cable.

[0006] To achieve the above technical purpose and reach the above technical effect, the present utility model is realized through the following technical solutions:

[0007] A symmetrical protective film for FFC cables includes a film body. A pre-fold line is provided in the middle of the film body. The film body is symmetrically divided into a first symmetric area and a second symmetric area with respect to the pre-fold line. Both the first symmetric area and the second symmetric area include a first adhesive area, a visible area, a second adhesive area, and a handle area arranged in sequence along the direction close to the pre-fold line.

[0008] Further, the first adhesive areas located in the first symmetric area and the second symmetric area are symmetrically arranged with respect to the pre-fold line, the visible areas located in the first symmetric area and the second symmetric area are symmetrically arranged with respect to the pre-fold line, the second adhesive areas located in the first symmetric area and the second symmetric area are symmetrically arranged with respect to the pre-fold line, and the handle areas located in the first symmetric area and the second symmetric area are symmetrically arranged with respect to the pre-fold line.

[0009] Further, the adhesive film body is a PET film, and the size of the adhesive film body is 15 - 20 * 30 - 40 mm.

[0010] Further, the pre-fold line is parallel to the width direction of the adhesive film body.

[0011] Further, both the first adhesive area and the second adhesive area are coated with an adhesive layer, the adhesive layer is coated on one end face of the adhesive film body, and the adhesive layer is a 3M adhesive layer.

[0012] Further, the visible area is a transparent area, and the color of the handle area is different from the color of the adhesive film body.

[0013] Further, the length of the first adhesive area is 2.5 - 3.5 mm, and the length of the second adhesive area is 3.5 - 4.5 mm.

[0014] Further, the length of the visible area is 5.5 - 6.5 mm, and the length of the handle area is 4.5 - 5.5 mm.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] By providing two sets of symmetric first adhesive areas, visible areas, second adhesive areas and handle areas at both ends of the pre-fold line, the present utility model attaches the protective adhesive film to both ends of the gold finger, which can replace the reinforcing plate and play a role in protecting and fixing the gold finger. The gold finger is not easily deformed and affects subsequent use; after the protective adhesive film is torn off, there will be no residual glue at the gold finger, ensuring the subsequent use of the flexible flat cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the front view of the protective adhesive film in the present utility model;

[0018] Figure 2 is the side view of the protective adhesive film in the present utility model.

[0019] Reference numerals are: 1 - adhesive film body, 2 - pre-fold line, 3 - first adhesive area, 4 - visible area, 5 - second adhesive area, 6 - handle area, and 7 - adhesive layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] For the convenience of those skilled in the art, the present utility model will be further described below in conjunction with embodiments and the accompanying drawings. The content mentioned in the embodiments does not limit the present utility model.

[0021] Embodiment

[0022] As Figure 1-2 shown, this embodiment discloses a symmetric protective adhesive film for FFC lines, including a film body 1. A pre-fold line 2 is provided in the middle of the film body 1. The film body 1 is symmetrically divided into a first symmetric area and a second symmetric area with respect to the pre-fold line 2. Both the first symmetric area and the second symmetric area include a first adhesive area 3, a visible area 4, a second adhesive area 5, and a handle area 6 arranged in sequence along the direction close to the pre-fold line 2.

[0023] Furthermore, the first adhesive areas 3 located in the first symmetric area and the second symmetric area are symmetrically arranged with respect to the pre-fold line 2, the visible areas 4 located in the first symmetric area and the second symmetric area are symmetrically arranged with respect to the pre-fold line 2, the second adhesive areas 5 located in the first symmetric area and the second symmetric area are symmetrically arranged with respect to the pre-fold line 2, and the handle areas 6 located in the first symmetric area and the second symmetric area are symmetrically arranged with respect to the pre-fold line 2.

[0024] The specific use scenario of the protective adhesive film in this embodiment is as follows: Align the end of the gold finger with the pre-fold line 2, fold the first adhesive area 3, visible area 4, second adhesive area 5, and handle area 6 symmetrically arranged on both sides of the pre-fold line 2 respectively, so that both the first adhesive area 3 and the second adhesive area 5 are attached to the two end faces of the gold finger. Finally, the first symmetric area and the second symmetric area of the protective adhesive film are symmetrically attached to the two end faces of the gold finger with respect to the pre-fold line 2. The first adhesive area 3 acts as a substitute for the reinforcing plate, which can protect the end of the gold finger and prevent the gold finger from deforming; the visible area 4 is provided for observing the gold finger; the second adhesive area 5 plays a further fixing role, making the protective adhesive film not easily fall off; the handle area 6 is provided, which facilitates tearing off the protective adhesive film by grasping the handle area 6, improving the practicability of the protective adhesive film.

[0025] Furthermore, the film body 1 is a PET film, and the size of the film body 1 is 15 - 20 * 30 - 40 mm. In this embodiment, the size of the film body 1 is 20 * 36 mm; PET has the advantages of environmental protection and recyclability, enabling the protective adhesive film to be reused repeatedly and saving production costs.

[0026] Furthermore, the pre-fold line 2 is parallel to the width direction of the film body 1.

[0027] Further, both the first adhesive area 3 and the second adhesive area 5 are coated with an adhesive layer 7. The adhesive layer 7 is coated on one end face of the adhesive film body 1, and the adhesive layer 7 is a 3M adhesive layer. 3M adhesive has good adhesiveness and impact resistance. Using the 3M adhesive layer material for the adhesive layer 7 can firmly paste the protective adhesive film at the gold finger, playing a good protective role for the gold finger. At the same time, 3M adhesive does not leave residual adhesive. After tearing off the protective adhesive film from the gold finger, the cleanliness of the gold finger surface can still be maintained, and it will not affect the subsequent use of the flexible flat cable.

[0028] Further, the visible area 4 is a transparent area, and the color of the handle area 6 is different from that of the adhesive film body 1. In this embodiment, the color of the handle area 6 is set to blue. Both the visible area 4 and the handle area 6 are not sticky. By setting the visible area 4 and the visible area 4 being a transparent area, it is convenient to observe whether the gold finger is deformed; setting the handle area 6 to blue makes it convenient to tear off the protective adhesive film by grasping the handle area 6.

[0029] Further, the length of the first adhesive area 3 is 2.5 - 3.5 mm, and the length of the second adhesive area 5 is 3.5 - 4.5 mm. In this embodiment, the direction perpendicular to the pre-fold line 2 is the length direction. The length of the first adhesive area 3 is 3 mm, and the length of the second adhesive area 5 is 4 mm.

[0030] Further, the length of the visible area 4 is 5.5 - 6.5 mm, and the length of the handle area 6 is 4.5 - 5.5 mm. In this embodiment, the direction perpendicular to the pre-fold line 2 is the length direction. The length of the visible area 4 is 6 mm, and the length of the handle area 6 is 5 mm. Through the above settings, the lengths of both the first adhesive area 3 and the second adhesive area 5 are less than the lengths of the visible area 4 and the handle area 6, which can not only ensure that the protective adhesive film can fit well on both end faces of the gold finger and is not easy to fall off, playing a protective role for the gold finger, but also save the usage amount of the adhesive layer 7, avoid waste caused by using too much glue, and save production costs.

[0031] The technical solutions provided by the embodiments of the present invention have been introduced in detail above. Specific examples are used in this article to elaborate on the principles and implementation manners of the embodiments of the present invention. The descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention; at the same time, for those of ordinary skill in the art, according to the embodiments of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A symmetrical protective film for FFC lines, characterized in that: It includes a film body, a pre-folding line is provided in the middle of the film body, and the film body is symmetrically divided into a first symmetrical area and a second symmetrical area about the pre-folding line. The first symmetrical area and the second symmetrical area both include a first adhesive area, a visible area, a second adhesive area and a handle area which are sequentially arranged along the direction close to the pre-folding line.

2. The symmetrical protective film for FFC line according to claim 1, characterized in that: The first adhesive areas respectively located in the first symmetrical area and the second symmetrical area are symmetrically arranged about the pre-folding line, the visible areas respectively located in the first symmetrical area and the second symmetrical area are symmetrically arranged about the pre-folding line, the second adhesive areas respectively located in the first symmetrical area and the second symmetrical area are symmetrically arranged about the pre-folding line, and the handle areas respectively located in the first symmetrical area and the second symmetrical area are symmetrically arranged about the pre-folding line.

3. The symmetrical protective film for FFC line according to claim 1, characterized in that: The adhesive film body is a PET film, and the size of the adhesive film body is 15-20*30-40mm.

4. The symmetrical protective film for FFC line according to claim 1, characterized in that: The pre-folding line is parallel to the width direction of the film body.

5. The symmetrical protective film for FFC line according to claim 1, characterized in that: The first adhesive area and the second adhesive area are both coated with an adhesive layer, the adhesive layer is coated on one end surface of the adhesive film body, and the adhesive layer is a 3M adhesive layer.

6. The symmetrical protective film for FFC line according to claim 1, characterized in that: The visible area is a transparent area, and the color of the handle area is different from the color of the film body.

7. The symmetrical protective film for FFC line according to claim 1, characterized in that: The length of the first adhesive area is 2.5-3.5 mm, and the length of the second adhesive area is 3.5-4.5 mm.

8. The symmetrical protective film for FFC line according to claim 1, characterized in that: The length of the visible area is 5.5-6.5 mm, and the length of the handle area is 4.5-5.5 mm.

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