CN111462951A - A cable with hot melt self-adhesive function - Google Patents

Abstract

The invention relates to a cable with hot-melt self-adhesive function, comprising a cable main body, characterized in that the outer surface of the cable main body is provided with a hot-melt self-adhesive layer. The hot-melt self-adhesive layer is in a solid state at normal temperature, the melting point of the hot-melt self-adhesive layer is 60-180 degrees Celsius, and the hot-melt self-adhesive layer can be hot-melted after the surface temperature reaches 60-180 degrees Celsius to form a The semi-melted state with self-adhesive function, when the temperature drops to normal temperature, it will be cured and shaped again. In the cable with hot-melt self-adhesive function of the present invention, a hot-melt self-adhesive layer is provided on the outer surface of the cable body, and the hot-melt self-adhesive layer can be directly heated by a hot air gun or a heat source when paralleling is required, so that the hot-melt self-adhesive layer has the viscosity and phase. The adjacent cables are paralleled, so the cable with hot-melt self-adhesive function of the present invention can be operated on site, facilitates wiring, improves paralleling efficiency, saves paralleling space, ensures reliable cable transmission performance after paralleling, and costs less. low advantage.

Description

A cable with hot melt self-adhesive function

technical field

The invention relates to a cable with hot-melt self-adhesive function.

Background technique

When the cable is in use, when the space is relatively limited, it needs to be used in parallel. There are two conventional cable paralleling methods:

The first method is to twist multiple cables to form one strand. The disadvantage of this method of paralleling is that the process is more complicated, and the cables will be damaged, so the transmission performance of the cables after paralleling cannot be guaranteed.

The second method is to arrange multiple cables in parallel, and then use tape to wrap and parallel the connection points of the parallel wires. This parallel method is less efficient by manual work, and it will also increase the total cross-sectional area of the cables after paralleling. Cross-sectional area, waste of space.

The third method is to take a single cable to the factory and use a special paralleling device for parallel processing, and most of them are only suitable for parallel processing with a relatively thick outer diameter, and cannot be used for on-site operations.

The fourth method is to directly process the structure of multiple cables in the factory according to the requirements, such as two parallel cables, three parallel cables, four parallel cables, etc. This method needs to be produced according to different parallel cable structures. Different paralleling molds are used for production, which has high processing difficulty, large processing loss and poor economic performance, and the paralleled cables after processing cannot be re-parallelized on site, which has limitations.

Therefore, it is particularly important to seek a cable that can be operated on-site, is convenient for wiring, improves the efficiency of paralleling, saves space for paralleling, and ensures reliable and low-cost cable transmission performance after paralleling.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the above-mentioned deficiencies, and to provide a hot-melt self-adhesive function that can be operated on-site, is convenient for wiring, improves the efficiency of paralleling, saves space for paralleling, ensures reliable cable transmission performance after paralleling, and has a low cost. cable.

The object of the present invention is achieved in this way:

A cable with hot-melt self-adhesive function, comprising a cable body, characterized in that the outer surface of the cable body is provided with a hot-melt self-adhesive layer.

As a preference, the cross-sectional area of the cable body is S1, the cross-sectional area of the hot-melt self-adhesive layer is S2, and the range satisfying S2/(S1+S2) is 5%-30%.

As a preference, the hot-melt self-adhesive layer is in a solid state at room temperature, the melting point of the hot-melt self-adhesive layer is 60-180 degrees Celsius, and the hot-melt self-adhesive layer can be carried out after the surface temperature of the hot-melt self-adhesive layer reaches 60-180 degrees Celsius. Hot-melt to form a semi-melted state with self-adhesive function. When the temperature drops to normal temperature, it is cured and shaped again.

As a preference, the cable body can satisfy that the surface of the cable body is not affected when the hot-melt self-adhesive layer is in a hot-melting state.

As a preference, when the cable body contains PVC, PE, PP materials, the melting point of the hot-melt self-adhesive layer is 60-120 degrees Celsius. When the hot-melt self-adhesive layer is hot-melted, the PVC, PE, and PP materials in the cable body are not Affected by the external temperature to ensure its own performance.

As a preference, when the cable body contains fluoroplastic material, the melting point of the hot-melt self-adhesive layer is 60-180 degrees Celsius, and the fluoroplastic material in the cable body is not affected by external temperature to ensure its own performance.

As a kind of preference, when the melting point of the required hot-melt self-adhesive layer is at 60-100 degrees Celsius, the material of the hot-melt self-adhesive layer is EVA or EVA modified material, and the EVA content in the EVA modified material is greater than 50%, EVA The VA content in the product is 18%-50%. The specific choice of brand A1: French Arkema EVA2805; brand A2: American Dow EVA460 or A3: South Korea LG Chemical EA28400, or a combination of the above two or more.

As a preference, when the required melting point of the hot-melt self-adhesive layer is 100-180 degrees Celsius, the material of the hot-melt self-adhesive layer is low-melting PA or low-melting PA modified material. If the PA content of the melting point is greater than 60%, choose the brand B1: DuPont PA8063 or B2: Polymet PA61T-130, or a combination of the above two.

As a preference, when the required melting point of the hot-melt self-adhesive layer is 100-150 degrees Celsius, the material of the hot-melt self-adhesive layer is TPU or TPU modified material, the TPU content in the TPU modified material is greater than 90%, TPU The melting point is selected at 100-150 degrees Celsius, and the choice of grades C1: American Lubrizol BF85 or C2: American Lubrizol 58315, or a combination of the above two.

A method of merging cables with hot melt self-adhesive function:

First, a plurality of cables with hot-melt self-adhesive function are arranged in parallel and in contact with each other, and then the heat source is output at the place to be paralleled, so that the hot-melt self-adhesive layer of the cable at the place to be paralleled is heated and melted. The adjacent cables are connected as a whole to complete the parallel line.

Compared with the prior art, the beneficial effects of the present invention are:

In the cable with hot-melt self-adhesive function of the present invention, a hot-melt self-adhesive layer is provided on the outer surface of the cable body, and the hot-melt self-adhesive layer can be directly heated by a hot air gun or a heat source when paralleling is required, so that the hot-melt self-adhesive layer has the viscosity and phase. The adjacent cables are paralleled, so the cable with hot-melt self-adhesive function of the present invention can be operated on site, facilitates wiring, improves paralleling efficiency, saves paralleling space, ensures reliable cable transmission performance after paralleling, and costs less. low advantage.

Description of drawings

FIG. 1 is a schematic structural diagram of a cable with hot melt self-adhesive function.

in:

Cable body 1, hot melt self-adhesive layer 2.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Referring to FIG. 1 , a cable with hot-melt self-adhesive function involved in the present invention includes a cable body 1 , the outer surface of the cable body 1 is provided with a hot-melt self-adhesive layer 2 , and the wall thickness of the hot-melt self-adhesive layer 2 is is 0.015-0.5 mm, and the cross-sectional area of the cable body 1 is S1, the cross-sectional area of the hot-melt self-adhesive layer 2 is S2, and the range satisfying S2/(S1+S2) is 5%-30%.

The cable body 1 can be a coaxial cable, an electronic wire, an optical fiber cable, etc.;

The hot-melt self-adhesive layer 2 is in a solid state at room temperature, the melting point of the hot-melt self-adhesive layer 2 is 60-180 degrees Celsius, and the hot-melt self-adhesive layer 2 can be hot-melted when the surface temperature of the hot-melt self-adhesive layer 2 reaches 60-180 degrees Celsius. , forming a semi-melted state with self-adhesive function, and curing and shaping again when the temperature drops to normal temperature.

The surface of the cable main body 1 has high temperature resistance, which can satisfy that the surface of the cable main body 1 is not affected when the hot-melt self-adhesive layer 2 is in a hot-melting state.

When the conventional cable body 1 contains PVC, PE, PP and other materials, it is recommended to select the melting point of the matching hot-melt self-adhesive layer 2 at 60-120 degrees Celsius. When the hot-melt self-adhesive layer 2 is hot-melted, the PVC, PE, PP and other materials are not affected by external temperature and ensure their own performance.

When the conventional cable body 1 contains a fluoroplastic material, the melting point of the hot-melt self-adhesive layer 2 that is selected and matched is released. The working conditions of the product are determined. When it is in a high temperature working condition (greater than 80 degrees), it is recommended to choose the melting point of the matching hot-melt self-adhesive layer 2 at 100-180 degrees Celsius. When the hot-melt self-adhesive layer 2 is hot-melted, the main body of the cable The fluoroplastic material in 1 is not affected by the external temperature to ensure its own performance.

When the required melting point of the hot-melt self-adhesive layer 2 is 60-100 degrees Celsius, the material of the hot-melt self-adhesive layer 2 is EVA or EVA modified material, the EVA content in the EVA modified material is greater than 50%, and the VA in the EVA Content 18%-50%. Specifically, you can choose grade A1: French Arkema EVA2805; grade A2: American Dow EVA460 or A3: South Korea LG Chem EA28400, you can also choose two or more combinations of the above;

When the required melting point of the hot-melt self-adhesive layer 2 is 100-180 degrees Celsius, the material of the hot-melt self-adhesive layer 2 is a low melting point PA or a low melting point PA modified material, and the low melting point PA content in the low melting point PA modified material More than 60%, you can choose the grade B1: DuPont PA8063 or B2: Polymax PA61T-130, or you can choose a combination of the above two;

When the required melting point of the hot-melt self-adhesive layer 2 is 100-150 degrees Celsius, the material of the hot-melt self-adhesive layer 2 is TPU or TPU modified material, the TPU content in the TPU modified material is greater than 90%, and the melting point of TPU is selected. at 100-150 degrees Celsius. Specifically, you can choose the grade C1: American Lubrizol BF85 or C2: American Lubrizol 58315, or you can choose a combination of the above two;

When using the coating process to form the hot-melt self-adhesive layer on the cable body, according to the melting point of the different hot-melt self-adhesive layer 2, select A1: French Arkema EVA2805, B2: Polymax PA61T-130 or C1: American Road Borun BF85;

When the hot-melt self-adhesive layer is formed by spraying on the cable body, A3 is selected according to the melting point of different hot-melt self-adhesive layers 2: South Korea LG Chemical EA28400;

When the hot-melt self-adhesive layer is formed by extrusion process on the main body of the cable, according to different melting points of the hot-melt self-adhesive layer 2, A2: Dow EVA460, B1: DuPont PA8063 or C2: Lubrizol: 58315;

The production process of a cable with hot melt self-adhesive function can adopt the following three ways:

The first production process is the coating process. The coating process steps are as follows:

Step 1. Dipping

The material of the hot-melt self-adhesive layer 2 is melted to form liquid glue and in a container, the cable body 1 is passed through the container, and the height of the cable body 1 in the container is lower than the liquid level of the liquid glue. The surface of the cable body 1 forms a layer of glue;

Step 2. Cool down

The cable body 1 after dipping is air-cooled to the glue layer through a cooling box, the cooling temperature is 20-30 degrees Celsius, and the cooling time is 2-10 seconds;

The above steps 1 and 2 are repeated, and the coating operation is completed after the thickness of the hot-melt self-adhesive layer 2 outside the cable body 1 meets the design requirements.

Embodiment 1, when the material of hot-melt self-adhesive layer adopts A1: France Arkema EVA2805, coating process operation steps:

Step 1. Dipping

The material of the hot-melt self-adhesive layer 2 is melted to form liquid glue and in a container, the cable body 1 is passed through the container, the cable body 1 is PVC, and the height of the cable body 1 in the container is lower than the liquid level of the liquid glue , the surface of the cable body 1 after passing through the container forms a layer of glue; the thickness of the glue layer is 0.01-0.03mm;

Step 2. Cool down

The cable body 1 after dipping is air-cooled to the glue layer through a cooling box, the cooling temperature is 20 degrees Celsius, and the cooling time is 3 seconds;

Repeat the above steps 1 and 2 for 1-3 times, and complete the coating operation after the thickness of the hot-melt self-adhesive layer 2 outside the cable body 1 meets the design requirements.

Example 2. When the material of the hot-melt self-adhesive layer adopts B2: Polymax PA61T-130, the coating process steps:

Step 1. Dipping

The material of the hot-melt self-adhesive layer 2 is melted to form a liquid glue and in a container, the cable body 1 is passed through the container, the cable body 1 is FEP, and the height of the cable body 1 in the container is lower than the liquid level of the liquid glue , a layer of glue is formed on the surface of the cable body 1 after passing through the container; the thickness of the glue layer is 0.01-0.02mm;

Step 2. Cool down

The cable body 1 after dipping is air-cooled to the glue layer through a cooling box, the cooling temperature is 22 degrees Celsius, and the cooling time is 6 seconds;

Repeat the above steps 1 and 2, 2-3 times, and complete the coating operation after the thickness of the hot-melt self-adhesive layer 2 outside the cable body 1 meets the design requirements.

Embodiment 3, when the material of the hot-melt self-adhesive layer adopts C1: American Lubrizol BF85, the coating process steps:

Step 1. Dipping

The material of the hot-melt self-adhesive layer 2 is melted to form a liquid glue and in a container, the cable body 1 is passed through the container, the cable body 1 is FEP, and the height of the cable body 1 in the container is lower than the liquid level of the liquid glue , the surface of the cable body 1 after passing through the container forms a layer of glue; the thickness of the glue layer is 0.015-0.025mm;

Step 2. Cool down

The cable body 1 after dipping is air-cooled to the glue layer through a cooling box, the cooling temperature is 27 degrees Celsius, and the cooling time is 10 seconds;

Repeat the above steps 1 and 2, 2-3 times, and complete the coating operation after the thickness of the hot-melt self-adhesive layer 2 outside the cable body 1 meets the design requirements.

The second production process is the spraying process. The spraying process steps are as follows:

Step 1. Spray

The material of the hot-melt self-adhesive layer 2 is melted to form liquid glue and in a container, the glue in the container is sprayed into the spraying chamber, and the cable body 1 passes through the spraying chamber, and the surface of the cable 1 after passing through the spraying chamber is formed. a layer of glue;

Step 2. Cool down

The sprayed cable body 1 goes through the cooling box to air-cool the glue layer, the cooling temperature is 25-30 degrees Celsius, and the cooling time is 5-10 seconds; the cooling step plays a role in slow cooling of the glue layer, preventing the temperature of the glue layer from dropping sharply form a rough surface;

The above steps 1 and 2 are repeated, and the coating operation is completed after the thickness of the hot-melt self-adhesive layer 2 outside the cable body 1 meets the design requirements.

Embodiment 4, when the material of the hot-melt self-adhesive layer adopts A3: Korea LG Chemical EA28400, the concrete steps of the spraying process are:

Step 1. Spray

The material of the hot-melt self-adhesive layer 2 is melted to form liquid glue and as for a container, the glue in the container is sprayed into the spraying room, and the cable body 1 passes through the spraying room, and the cable body 1 is PVC. After passing through the spraying room The surface of the cable 1 forms a layer of glue; the thickness of the glue layer is 0.01-0.02mm

Step 2. Cool down

The sprayed cable body 1 passes through the cooling box to air-cool the glue layer, the cooling temperature is 25 degrees Celsius, and the cooling time is 5 seconds; the cooling step has a slow cooling effect on the glue layer, preventing the temperature of the glue layer from dropping sharply and forming a rough surface;

Repeat the above steps 1 and 2, 2-3 times, and complete the coating operation after the thickness of the hot-melt self-adhesive layer 2 outside the cable body 1 meets the design requirements.

The third production process is the extrusion process. The extrusion process steps are as follows:

Step 1. Extrusion

The material of the hot-melt self-adhesive layer 2 is extruded on the surface of the cable body 1 by a screw extruder, and the temperature of each temperature zone of the screw extruder is set as follows:

The first temperature zone is 40-80 degrees Celsius;

The second temperature zone is 70-120 degrees Celsius;

The third temperature zone is 120-140 degrees Celsius;

The fourth temperature zone is 140-160 degrees Celsius;

The nose temperature zone is 160-180 degrees Celsius;

The glue melted at the outlet of the die is extruded from the die head by covering the surface of the cable main body 1 to form a hot-melt self-adhesive layer 2 on the cable main body 1;

Step 2. Cool down

The extruded cable body 1 with the glue layer enters the cooling chamber for direct air cooling, or first enters the cooling water tank for cooling with warm water, and then enters the cooling chamber for direct air cooling.

When air cooling is performed directly, the cooling temperature is 20-30 degrees Celsius, and the cooling time is 5-60 seconds;

When first entering the cooling water tank for warm water cooling and then entering the cooling chamber for direct air cooling, the cooling temperature of warm water cooling is 35-40 degrees Celsius, and the cooling time is 5-15 seconds, and the cooling temperature of air cooling is 20-30 degrees Celsius, and the cooling time is 5-15 seconds.

Embodiment 5, when the material of the hot-melt self-adhesive layer adopts A2: Dow EVA460 of the United States, the extrusion process steps:

Step 1. Extrusion

The material of the hot-melt self-adhesive layer 2 is extruded on the surface of the cable main body 1 by a screw extruder. The cable main body 1 is PE, and the temperature of each temperature zone of the screw extruder is set as follows:

The first temperature zone is 70 degrees Celsius;

The second temperature zone is 100 degrees Celsius;

The third temperature zone is 130 degrees Celsius;

The fourth temperature zone is 150 degrees Celsius;

The nose temperature zone is 170 degrees Celsius;

The glue melted at the outlet of the die is extruded from the die head by covering the surface of the cable main body 1 to form a hot-melt self-adhesive layer 2 on the cable main body 1;

Step 2. Cool down

The extruded cable body 1 with the glue layer is directly air-cooled, the cooling temperature is 25 degrees Celsius, and the cooling time is 35 seconds.

Example 6, when the material of the hot-melt self-adhesive layer adopts B1: DuPont PA8063, the extrusion process steps:

Step 1. Extrusion

The material of the hot-melt self-adhesive layer 2 is extruded on the surface of the cable main body 1 by a screw extruder. The cable main body 1 is FEP, and the temperature of each temperature zone of the screw extruder is set as follows:

The first temperature zone is 80 degrees Celsius;

The second temperature zone is 120 degrees Celsius;

The third temperature zone is 140 degrees Celsius;

The fourth temperature zone is 160 degrees Celsius;

The nose temperature zone is 180 degrees Celsius;

The glue melted at the outlet of the die is extruded from the die head by covering the surface of the cable main body 1 to form a hot-melt self-adhesive layer 2 on the cable main body 1;

Step 2. Cool down

The extruded cable body 1 with the glue layer first enters the cooling water tank for cooling with warm water, and then enters the cooling chamber for direct air cooling. The cooling temperature of the warm water cooling is 30 degrees Celsius, the cooling time is 8 seconds, and the cooling temperature of the air cooling is 25 Celsius with a cooldown of 20 seconds.

Example 7. When the material of the hot-melt self-adhesive layer adopts C2: American Lubrizol: 58315, the extrusion process steps:

Step 1. Extrusion

The material of the hot-melt self-adhesive layer 2 is extruded on the surface of the cable body 1 by a screw extruder. The cable body 1 is PVC, and the temperature of each temperature zone of the screw extruder is set as follows:

The first temperature zone is 40 degrees Celsius;

The second temperature zone is 70 degrees Celsius;

The third temperature zone is 120 degrees Celsius;

The fourth temperature zone is 140 degrees Celsius;

The nose temperature zone is 150 degrees Celsius;

The glue melted at the outlet of the die is extruded from the die head by covering the surface of the cable main body 1 to form a hot-melt self-adhesive layer 2 on the cable main body 1;

Step 2. Cool down

The extruded cable body 1 with a glue layer first enters the cooling water tank for cooling with warm water, and then enters the cooling chamber for direct air cooling. The cooling temperature of the warm water cooling is 40 degrees Celsius, the cooling time is 15 seconds, and the cooling temperature of the air cooling is 30 Celsius with a cooldown of 12 seconds.

A method of merging cables with hot melt self-adhesive function:

First, a plurality of (at least two) cables are arranged in parallel and in contact with each other, and then the heat source is output at the place to be paralleled, so that the hot-melt self-adhesive layer 2 of the cable at the place to be paralleled is heated and melted, and the adjacent place is cooled after cooling. The cables are connected as a whole and wired together. The above-mentioned heat source output is preferably a hot air gun. The hot air gun can set the temperature of the output hot air, and the heat supply is uniform without causing local overheating. The heat gun can also be replaced by a hair dryer or the like.

For the above-mentioned nine embodiments, the parallel processing is carried out, and the specific process parameters of the parallel and the binding force after the parallel are as follows:

Embodiment 1, the temperature at the air outlet of the hot air gun: 70-100 ° C, the heating time: 3-6S; the binding force: 2-3N;

Embodiment 2, the temperature at the air outlet of the hot air gun: 130-160 ° C, the heating time: 6-10S; the binding force: 5-7N;

Embodiment 3, the temperature at the air outlet of the hot air gun: 120-150 ° C, the heating time: 5-10S; the binding force: 4-6N;

Embodiment 4, the temperature at the air outlet of the hot air gun: 70-100 ° C, the heating time: 3-6S; the binding force: 2-3N;

Embodiment 5, the temperature at the air outlet of the hot air gun: 90-120 ° C, the heating time: 4-9S; the binding force: 2-4N;

Embodiment 6, the temperature at the air outlet of the hot air gun: 160-190 ° C, the heating time: 7-12S; the binding force: 6-8N;

Embodiment 7, the temperature at the air outlet of the hot air gun: 140-170 ° C, the heating time: 6-10S; the binding force: 5-7N;

The above are only specific application examples of the present invention, and do not constitute any limitation to the protection scope of the present invention. All technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims (10)

1. A cable with hot-melt self-adhesive function, comprising a cable body, characterized in that the outer surface of the cable body is provided with a hot-melt self-adhesive layer. 2. a kind of cable with hot-melt self-adhesive function according to claim 1 is characterized in that the cross-sectional area of the cable main body is S1, and the cross-sectional area of the hot-melt self-adhesive layer is S2, which satisfies S2/(S1+ The range of S2) is 5%-30%. 3. a kind of cable with hot-melt self-adhesive function according to claim 1, is characterized in that described hot-melt self-adhesive layer is a solid state at normal temperature, and the melting point of hot-melt self-adhesive layer is 60-180 degrees Celsius, After the surface temperature of the hot-melt self-adhesive layer reaches 60-180 degrees Celsius, it can be hot-melted to form a semi-melted state with self-adhesive function. When the temperature drops to room temperature, it can be cured and shaped again. 4 . The cable with hot-melt self-adhesive function according to claim 1 , wherein the cable body can satisfy that the surface of the cable body is not affected when the hot-melt self-adhesive layer is in a hot-melt state. 5 . 5. A cable with hot-melt self-adhesive function according to claim 1, characterized in that when the main body of the cable contains PVC, PE, PP materials, the melting point of the hot-melt self-adhesive layer is 60-120 degrees Celsius, and when the hot-melt When the self-adhesive layer is hot-melted, the PVC, PE and PP materials in the cable body are not affected by the external temperature to ensure their own performance. 6. A cable with hot-melt self-adhesive function according to claim 1, characterized in that when the cable body contains a fluoroplastic material, the melting point of the hot-melt self-adhesive layer is 60-180 degrees Celsius, and the fluoroplastic in the cable body The material is not affected by the external temperature to ensure its own performance. 7. a kind of cable with hot-melt self-adhesive function according to claim 3 is characterized in that when the melting point of the required hot-melt self-adhesive layer is at 60-100 degrees Celsius, the material of the hot-melt self-adhesive layer is EVA or EVA modified material, the EVA content in the EVA modified material is more than 50%, and the VA content in the EVA is 18%-50%. The specific choice of grade A1: French Arkema EVA2805; grade A2: Dow EVA460 or A3: Korea LG Chem EA28400, or a combination of two or more of the above. 8. A kind of cable with hot-melt self-adhesive function according to claim 3, characterized in that when the required melting point of the hot-melt self-adhesive layer is 100-180 degrees Celsius, the material of the hot-melt self-adhesive layer is a low melting point PA or low melting point PA modified material, the low melting point PA content in the low melting point PA modified material is more than 60%, choose the grade B1: DuPont PA8063 or B2: Polymet PA61T-130, or a combination of the above two. 9. a kind of cable with hot-melt self-adhesive function according to claim 3 is characterized in that when the melting point of the required hot-melt self-adhesive layer is at 100-150 degrees Celsius, the material of the hot-melt self-adhesive layer is TPU or TPU modified material, the TPU content in the TPU modified material is more than 90%, the melting point of TPU is selected at 100-150 degrees Celsius, and the choice of grade C1: American Lubrizol BF85 or C2: American Lubrizol 58315, or the above two combination. 10. A method for merging cables with hot-melt self-adhesive function: First, a plurality of cables with hot-melt self-adhesive function according to claim 1 are arranged in parallel and in contact with each other, and then the heat source is output at the place to be paralleled, so that the hot-melt self-adhesive layer of the cable at the place to be paralleled is heated and melted, and the After cooling at this place, the adjacent cables are connected as a whole to complete the parallel line.

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