TWM635564U - Temperature-resistant flexible flat cable - Google Patents

Abstract

The present invention provides a temperature-resistant flexible flat cable, and the flexible flat cable comprises a conductor layer, a first insulating adhesive film, and a second insulating adhesive film. The first insulating adhesive film is disposed of on the first side surface of the conductor layer. The first insulating adhesive film has a first polyethylene naphthalate layer and a first hot melt adhesive layer. The second insulating adhesive film is disposed of on the second side surface of the conductor layer. The second insulating adhesive film has a second polyethylene naphthalate layer and a second hot melt adhesive layer. Wherein, after the first insulating adhesive film and the second insulating adhesive film are attached to the conductor layer, the conductor layer, the first insulating adhesive film, and the second insulating adhesive film are baked at a predetermined temperature within a predetermined period, so that the first insulating adhesive film and the second insulating adhesive film are baked. The hot melt adhesive layer and the second hot melt adhesive layer change from a thermoplastic property to a thermosetting property.

Description

Temperature-resistant flat flexible conductors

This invention is a technical field of flexible flat cable, especially a kind of temperature-resistant flat flexible wire that can maintain stability at high temperature.

The traditional flexible flat cable is a PET polyester film cable, which is formed by laminating the film and the wires by virtue of thermoplastic properties during the manufacturing process.

However, due to the thermoplastic properties of PET polyester film cable, it is easy to deform under high temperature operating environment, resulting in the risk of short circuit or open circuit of the wire. If it is used in the automotive field, for example, it may be dangerous. .

In view of this, this creation proposes a temperature-resistant flat flexible wire to solve problems caused by traditional connectors or problems that cannot be solved.

The purpose of this creation is to provide a temperature-resistant flat flexible wire, which is composed of a polyethylene naphthalate layer and a hot-melt adhesive layer that forms thermosetting properties under specific conditions. The insulating film is bonded to the conductor layer to To achieve the effect of being able to resist temperature changes at high temperatures without deformation.

The purpose of this creation is to provide a process formula for flat flexible wires resistant to temperature deformation The method is used to realize the above-mentioned temperature-resistant flat flexible wire.

In order to achieve the above and other purposes, the invention provides a temperature-resistant flat flexible wire system comprising a conductor layer, a first insulating film and a second insulating film. The conductor layer forms a plurality of conductors with a distance between the conductors. The conductor layer provides a first side and a second side corresponding to the first side. The first insulating film is disposed on the first side. The first insulating adhesive film has a first polyethylene naphthalate (Polyethylene Naphthalate, PEN) layer and a first hot melt adhesive layer. The first polyethylene naphthalate layer is stacked on the first hot-melt adhesive layer, and the first hot-melt adhesive layer is arranged on the first side. The second insulating film is disposed on the second side. The second insulating adhesive film has a second polyethylene naphthalate layer and a second hot-melt adhesive layer, and the second hot-melt adhesive layer is used for disposing on the second side. Wherein, after the first insulating adhesive film and the second insulating adhesive film are attached to the conductor layer, the conductor layer, the first insulating adhesive film and the second insulating adhesive film are baked at a predetermined temperature within a predetermined time, so that the first The hot-melt adhesive layer and the second hot-melt adhesive layer change from a thermoplastic property to a thermosetting property.

In order to achieve the above purpose and other purposes, the invention provides a method for manufacturing a temperature-resistant flat flexible wire, which includes step (a) providing a conductor layer, and the conductor layer forms a plurality of conductors with a distance between the conductors; the step ( b) providing a first insulating adhesive film, and the first insulating adhesive film has a first polyethylene naphthalate layer and a first hot melt adhesive layer; step (c) providing a second insulating adhesive film, and The second insulating adhesive film has a second polyethylene naphthalate layer and a second hot melt adhesive layer; step (d) attaching the conductor layer between the first insulating adhesive film and the second insulating adhesive film; step (e) Baking the conductor layer, the first insulating adhesive film and the second insulating adhesive film at a predetermined temperature within a predetermined time, so that the first hot melt adhesive layer and the second hot melt adhesive layer change from a thermoplastic property to a thermosetting property; and step (f) produces a temperature-resistant flat flexible wire.

Compared with the traditional PET polyester film cable, this creation proposes a temperature-resistant flat Flat flexible wires can be used in applications operating in high temperature environments, such as automotive applications.

10: Temperature-resistant flat flexible wire

12: Conductor layer

122: Conductor

14: The first insulating film

142: first polyethylene naphthalate layer

144: the first hot melt adhesive layer

146: printing layer

16: Second insulating film

162: second polyethylene naphthalate layer

164: the second hot melt adhesive layer

166: printing layer

18: Plating layer

d: spacing

SF1: first side

SF2: second side

S41~S46: steps

Fig. 1 is the three-dimensional schematic view of the temperature-resistant flat flexible wire of the embodiment of the invention.

FIG. 2 is a schematic cross-sectional view illustrating the conductor in the conductor layer of FIG. 1 of the present invention.

FIG. 3( a ) is a detailed schematic diagram illustrating the first insulating adhesive film of FIG. 1 of the present invention.

FIG. 3( b ) is a detailed schematic diagram illustrating the second insulating adhesive film of FIG. 1 of the present invention.

FIG. 4 is a schematic flow chart of the manufacturing method of the temperature-resistant flat flexible wire in the embodiment of the invention.

In order to fully understand the purpose, characteristics and effects of this creation, I will give a detailed description of this creation through the following specific embodiments and with the accompanying drawings, as described below.

In this work, "a" or "an" is used to describe the elements, elements and components described herein. This is done for convenience of illustration only and to provide a general sense of the scope of this work. Accordingly, unless it is obvious that it is otherwise indicated, such description should be read to include one, at least one, and the singular also includes the plural.

In this work, the terms "comprises", "including", "has", "containing" or any other similar terms are intended to cover a non-exclusive inclusion. For example, an element, structure, article, or device that contains a plurality of elements is not limited to those elements listed herein, but may include elements that are not explicitly listed but are generally inherent in the element, structure, article, or apparatus. other requirements. In addition, unless expressly stated to the contrary, the word "or" means an inclusive "or" and not an exclusive "or".

Please refer to FIG. 1 , which is a three-dimensional schematic view of the temperature-resistant flat flexible wire of the embodiment of the invention. In FIG. 1 , the temperature-resistant flat flexible wire 10 includes a conductor layer 12 , a first insulating adhesive film 14 and a second insulating adhesive film 16 .

The conductor layer 12 forms a plurality of conductors 122. Referring to FIG. 2 together, it is a schematic cross-sectional view illustrating the conductor in the conductor layer of FIG. 1 of the present invention. In FIG. 2 , the conductors 122 are illustrated by taking five copper wires as an example, and there may be one or more in other embodiments. Furthermore, there is a distance d between the conductors 122 , and the conductors 122 are not electrically connected to each other at the conductor layer 12 . Moreover, the conductive layer 12 provides a first side SF1 and a second side SF2 located on the corresponding side of the first side SF1 .

The first insulating adhesive film 14 is disposed on the first side surface SF1. Referring to FIG. 3(a) together, it is a detailed schematic diagram illustrating the first insulating adhesive film in FIG. 1 of the present invention. In FIG. 3( a ), the first insulating adhesive film 14 has a first polyethylene naphthalate (PEN) layer 142 and a first hot melt adhesive layer 144 . Moreover, the first polyethylene naphthalate layer 142 is stacked on the first hot melt adhesive layer 144, and the first hot melt adhesive layer 144 is used to be disposed on the first side SF1. In another embodiment, the material composition of the first hot melt adhesive layer 144 includes, for example, polyester resin. Moreover, in another embodiment, the first insulating adhesive film 14 further includes a printing layer 146 , and the printing layer 146 may be disposed between the first polyethylene naphthalate layer 142 and the first hot-melt adhesive layer 144 .

The second insulating adhesive film 16 is disposed on the second side surface SF2. Referring to FIG. 3(b) together, it is a detailed schematic diagram illustrating the second insulating adhesive film in FIG. 1 of the present invention. In Fig. 3 (b), the second insulating adhesive film 16 has a second polyethylene naphthalate layer 162 and a second hot-melt adhesive layer 164, and the second hot-melt adhesive layer 164 is used to be arranged on the first Two side SF2. In another embodiment, the material of the second hot melt adhesive layer 164 The material composition includes, for example, polyester resin. Moreover, in another embodiment, the second insulating adhesive film 16 further includes a printing layer 166 , and the printing layer 166 may be disposed between the second polyethylene naphthalate layer 162 and the second hot-melt adhesive layer 164 .

Returning to FIG. 1, after the first insulating adhesive film 162 and the second insulating adhesive film 164 are bonded to the conductor layer 12, the conductive layer 12, the first insulating adhesive film 14 and the second insulating adhesive film 14 are baked at a predetermined temperature within a predetermined period of time. Two insulating adhesive films 16, so that the first hot-melt adhesive layer 144 and the second hot-melt adhesive layer 164 change from a thermoplastic property to a thermosetting property, that is, the temperature-resistant flat flexible wire 10 under the thermosetting property The original electrical properties of the conductor layer 12 will not be damaged due to the change of the ambient temperature, especially the deformation of the first insulating adhesive film 162 and the second insulating adhesive film 164 under high temperature conditions.

In the foregoing, the range of the predetermined time is between 30 minutes and 90 minutes or the predetermined time is less than or equal to 60 minutes; and the range of the predetermined temperature is between 100 degrees and 170 degrees or the range of the predetermined temperature is less than or equal to It is equal to 140 degrees.

Moreover, in this embodiment, the temperature-resistant flat flexible wire 10 may further include an electroplating layer 18 formed on the free end of the second side surface SF2 , and the electroplating layer 18 is electrically connected to the conductor layer 12 .

Please refer to FIG. 4 , which is a schematic flow chart of the process method of the temperature-resistant flat flexible wire in the embodiment of the invention. In FIG. 4 , the steps of the temperature-resistant flat flexible wire manufacturing method start at S41 , which is to provide a conductor layer, and the conductor layer forms a plurality of conductors with a distance between the conductors.

Next step S42 , providing a first insulating adhesive film, and the first insulating adhesive film has a first polyethylene naphthalate layer and a first hot melt adhesive layer.

Next step S43 , providing a second insulating adhesive film, and the second insulating adhesive film has a second polyethylene naphthalate layer and a second hot melt adhesive layer.

A material composition of at least one of the first hot-melt adhesive layer and/or the second hot-melt adhesive layer includes polyester resin.

Next step S44 , bonding the conductor layer between the first insulating adhesive film and the second insulating adhesive film.

Then step S45, bake the conductor layer, the first insulating adhesive film and the second insulating adhesive film at a predetermined temperature within a predetermined time, so that the first hot melt adhesive layer and the second hot melt adhesive layer change from thermoplastic to thermosetting characteristic. For related descriptions, reference may be made to the foregoing embodiments, and details are not repeated here. For example, the predetermined time may be less than or equal to 60 minutes and the predetermined temperature range is less than or equal to 140 degrees.

Next to step S46, a temperature-resistant flat flexible wire is produced.

The invention has been disclosed above with preferred embodiments, but those skilled in the art should understand that the embodiments are only used to describe the invention, and should not be construed as limiting the scope of the invention. It should be noted that all changes and substitutions equivalent to those of the embodiments should be included within the scope of this creation. Therefore, the scope of protection of this creation should be defined by the scope of the patent application.

10: Temperature-resistant flat flexible wire

12: Conductor layer

14: The first insulating film

16: Second insulating film

18: Plating layer

SF1: first side

SF2: second side

Claims (8)

A temperature-resistant flat flexible wire includes: a conductor layer forming a plurality of conductors with a distance between the conductors, the conductor layer providing a first side and a second side on the corresponding side of the first side; the first An insulating adhesive film is disposed on the first side, the first insulating adhesive film has a first polyethylene naphthalate (PEN) layer and a first hot melt adhesive layer, the first polyethylene naphthalate The ethylene glycol layer is stacked on the first hot-melt adhesive layer, and the first hot-melt adhesive layer is arranged on the first side; and a second insulating adhesive film is arranged on the second side, and the second insulating The adhesive film has a second polyethylene naphthalate layer and a second hot-melt adhesive layer, and the second hot-melt adhesive layer is used to be arranged on the second side; wherein the first insulating adhesive film and the second After the insulating adhesive film is bonded to the conductive layer, the conductive layer, the first insulating adhesive film and the second insulating adhesive film are baked at a predetermined temperature within a predetermined time, so that the first hot melt adhesive layer and the second insulating adhesive film The hot melt adhesive layer changes from thermoplastic to thermosetting. The temperature-resistant flat flexible wire according to claim 1, wherein the material composition of at least one of the first hot-melt adhesive layer and the second hot-melt adhesive layer includes polyester resin. The temperature-resistant flat flexible wire as described in claim 1, wherein the predetermined time ranges from 30 minutes to 90 minutes. The temperature-resistant flat flexible wire as described in Claim 1, wherein the predetermined time is not greater than 60 minutes. The temperature-resistant flat flexible wire as described in claim 1, wherein the predetermined temperature The range is between 100 degrees and 170 degrees. The temperature-resistant flat flexible wire as described in Claim 1, wherein the range of the predetermined temperature is not greater than 140 degrees. The temperature-resistant flat flexible wire as described in Claim 1, wherein the first insulating adhesive film further includes a printing layer, and the printing layer is disposed between the first polyethylene naphthalate layer and the first hot-melt adhesive layer and, the second insulating adhesive film further includes a printing layer, and the printing layer is disposed between the second polyethylene naphthalate layer and the second hot melt adhesive layer. The temperature-resistant flat flexible wire as described in Claim 1 further includes an electroplating layer formed on the free end of the second side, and the electroplating layer is electrically connected to the conductor layer.

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