WO2022102826A1

WO2022102826A1 - Dust-free cable protective cover including ultra-high molecular weight polyethylene film, and method for manufacturing same

Info

Publication number: WO2022102826A1
Application number: PCT/KR2020/016097
Authority: WO
Inventors: 성호철
Original assignee: 주식회사 성엔지니어링
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2022-05-19

Abstract

The present invention relates to a dust-free cable protective cover and a method for manufacturing same, the dust-free cable protective cover comprising: a pair of first materials in which a first expanded polytetrafluoroethylene (ePTFE) film is formed on one surface of a first thermoplastic polyurethane (TPU) film; a second material in which a second ePTFE film is formed on one surface of a second TPU film; and a third material in which an ultra-high molecular weight polyethylene (UHMWPE) film is formed on one surface of a third TPU film, wherein a plurality of the pair of first materials are arranged spaced apart from each other between the second material and the third material, laminate parts are formed by thermally bonding the pair of first materials, the second material, and the third material, and a cable insertion part is formed between the laminate parts. The dust-free cable protective cover and the method for manufacturing same according to the present invention minimize dust generation on the outer surface and make it possible to achieve high durability and excellent processability by thermally bonding the TPU film, the ePTFE film, and the ultra-high molecular weight polyethylene film under optimal conditions.

Description

Dust-free cable protective cover comprising ultra-high molecular weight polyethylene film and manufacturing method thereof

The present invention relates to a dust-free cable protective cover and a method for manufacturing the same, and more specifically, heat-sealing a TPU film, an ePTFE film, and an ultra-high molecular weight polyethylene film under optimal conditions to minimize the generation of dust on the surface of the outer jacket, high durability and It relates to a dust-free cable protection cover that realizes excellent processability and a manufacturing method therefor.

A cable, such as a power or communication cable, typically comprises an inner layer comprising a conductive element, such as a metal wire or fiberglass, and one or more outer layers for the purpose of shielding and protection. In addition, this outer layer is collectively referred to as a cable protective cover or cable jacket, and it is possible to prevent the occurrence of defects in the product by minimizing the generation of dust, and to maintain proper operation.

It is generally known to use polymeric materials, such as polyolefins, in the manufacture of cable protective covers which are primarily for shielding and protection purposes. It is well known, in particular, to prepare the outermost protective layer from polyethylene.

More specifically, the outer surface of the cable protective cover forms a coating layer using Teflon resin. Teflon resin has excellent electrical insulation properties and excellent electrical and chemical stability that does not react with most chemicals. In addition, since Teflon resin has a low coefficient of friction, it has excellent wear resistance, but due to its low hardness, it is easily worn or scratched during friction with metals or rigid bodies with high hardness.

On the other hand, polyurethane-based resins are less likely to generate dust than Teflon resins, have a flexible material and have excellent elasticity, but have a problem in that they have a low melting point.

In general, the polymeric material used to manufacture the cable protective cover should have high durability and good processability such as good extrusion properties over a wide processing temperature range. Moreover, such a cable protective cover should generally have good mechanical properties, such as good environmental stress cracking resistance (ESCR), high mechanical strength, high surface finish and low shrinkage.

Despite research to develop and improve the cable protective cover, there is still a need for a cable protective cover having high durability and excellent processability. The dust-free cable protective cover including the ultra-high molecular weight polyethylene film of the present invention minimizes dust generation on the surface of the outer shell, and provides high durability and excellent processing characteristics.

[Prior art literature]

[Patent Literature]

(Patent Document 0001) Korean Patent No. 10-1552850

(Patent Document 0002) Korean Patent No. 10-1970827

In order to solve the above problems, the present invention minimizes the generation of dust on the outer skin surface by heat-sealing a TPU film, an ePTFE film, and an ultra-high molecular weight polyethylene film under optimal conditions, and realizes high durability and excellent processability. An object of the present invention is to provide a cable protection cover and a method for manufacturing the same.

In addition, a second object of the present invention is to provide a dust-free cable protective cover having an easy fusion process of the outer skin and excellent antistatic effect, and a method for manufacturing the same.

In order to achieve the above object, the dust-free cable protective cover according to the present invention includes a pair of first materials in which a first expanded polytetrafluoroethylene (ePTFE) film is formed on one surface of a first TPU (Thermoplastic Polyurethane) film; a second material having a second ePTFE film formed on one surface of the second TPU film; and a third material in which an ultra high molecular weight polyethylene (UHMWPE) film is formed on one surface of the third TPU film.

Here, a plurality of the pair of first materials may be disposed to be spaced apart from each other between the second material and the third material.

Here, the pair of first material, the second material, and the third material may be heat-sealed to form a lamination portion and a cable insertion portion between the lamination portion.

Here, the second material may be one in which an ultra-high molecular weight polyethylene film is formed on one surface of the second TPU film.

Here, any one selected from the group consisting of conductive fabric, conductive nano-carbon, conductive metal, conductive polymer, conductive ionomer, and conductive adhesive may be formed in the cable insertion part.

Here, the pair of first materials may have a width of 10 to 50 mm, and the second and third materials may have a width of 100 to 500 mm.

On the other hand, the manufacturing method of the dust-free cable protective cover according to the present invention is a pair of first materials in which the first ePTFE (Expanded Polytetrafluoroethylene) film is formed on one side of the first TPU (Thermoplastic Polyurethane) film, the second TPU film on one side Preparing a second material in which the second ePTFE film is formed and a third material in which an ultra high molecular weight polyethylene (UHMWPE) film is formed on one surface of the third TPU film; disposing a plurality of the pair of first materials to be spaced apart from each other between the second material and the third material; and heat-sealing the pair of the first material, the second material, and the third material to form a cable insertion part between the lamination part and the lamination part.

Here, the manufacturing of the pair of the first material, the second material, and the third material may be heat-sealed within a range of 100 to 200 °C.

Here, the manufacturing of the pair of the first material, the second material, and the third material may be heat-sealed within a pressure range of 1 to 7 atmospheres.

Here, the step of forming the lamination part and the cable insertion part may be heat-sealed within a range of 100 to 200 °C.

Here, the step of forming the lamination part and the cable insertion part may be heat-sealed within the range of 1 to 7 atmospheres.

Here, as for the pair of first materials, the first ePTFE film is formed on one surface of the first TPU film, and a conductive fabric, conductive nano-carbon, conductive metal, conductive polymer, conductive ionomer is formed on the other surface of the first ePTFE film. And any one selected from the group consisting of a conductive adhesive may be formed.

The dust-free cable protective cover of the present invention and its manufacturing method according to the above-described method minimizes the generation of dust on the surface of the outer sheath by heat-sealing a TPU film, an ePTFE film and an ultra-high molecular weight polyethylene film under optimal conditions, and has high durability and excellent processability. can be implemented

In addition, the dust-free cable protective cover and the manufacturing method of the present invention facilitate the fusion process of the outer skin and have an excellent antistatic effect.

1 is a perspective view of the dust-free cable protection cover of the present invention.

Figure 2 shows a front view and some enlarged views of the dust-free cable protective cover of the present invention.

Figure 3 shows a flowchart for each step of the manufacturing method of the dust-free cable protective cover of the present invention.

Figure 4a shows in detail the steps of manufacturing a pair of the first material, the second material and the third material in the manufacturing method of the dust-free cable protective cover of the present invention.

Figure 4b shows in detail the step of arranging a pair of first material in a plurality of spaced apart between the second material and the third material in the manufacturing method of the dust-free cable protective cover of the present invention.

Figure 4c shows in detail the steps of forming a lamination part and a cable insertion part by heat-sealing a pair of a first material, a second material, and a third material in the manufacturing method of the dust-free cable protective cover of the present invention.

The present specification provides a first TPU (Thermoplastic Polyurethane, thermoplastic polyurethane) film on one side of the first ePTFE (Expanded Polytetrafluoroethylene, expanded polytetrafluoroethylene) film is formed on one side of a pair of first materials; a second material having a second ePTFE film formed on one surface of the second TPU film; and a third material in which an ultra high molecular weight polyethylene (UHMWPE) film is formed on one surface of the third TPU film, wherein the pair of first materials is a plurality of the second material and the third material. A dust-free cable protection cover, which is spaced apart from each other and characterized in that the pair of first material, the second material and the third material are thermally fused to form a cable insertion part between the lamination part and the lamination part start

The terms used in this application are only used to describe specific examples. Therefore, for example, a singular expression includes a plural expression unless the context clearly requires it to be singular. In addition, as used in this application, terms such as "comprises" or "comprises" are used to clearly indicate that the features, steps, functions, components, or combinations thereof described in the specification exist, and other features It should be noted that it is not intended to preliminarily exclude the existence of elements, steps, functions, components, or combinations thereof.

On the other hand, unless otherwise defined, all terms used herein should be regarded as having the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. Accordingly, unless explicitly defined herein, specific terms should not be construed in an unduly idealistic or formal sense.

In addition, in the drawings, the size of the components may be exaggerated or reduced for convenience of description. For example, since the size and thickness of each component shown in the drawings are arbitrarily indicated for convenience of description, the present invention is not necessarily limited to the illustrated bar.

<무분진 케이블 보호 커버><Dust-free cable protection cover>

The present inventors have devised the following invention as a result of research in order to solve the above-mentioned problem. The present specification provides a first TPU (Thermoplastic Polyurethane, thermoplastic polyurethane) film on one side of the first ePTFE (Expanded Polytetrafluoroethylene, expanded polytetrafluoroethylene) film is formed on one side of a pair of first materials; a second material having a second ePTFE film formed on one surface of the second TPU film; and a third material in which an ultra high molecular weight polyethylene (UHMWPE) film is formed on one surface of the third TPU film, wherein the pair of first materials is a plurality of the second material and the third material. A dust-free cable protection cover, which is spaced apart from each other and characterized in that the pair of first material, the second material and the third material are thermally fused to form a cable insertion part between the lamination part and the lamination part start

1 is a perspective view of the dust-free cable protection cover of the present invention. Referring to FIG. 1 , it can be seen that the dust-free cable protective cover of the present invention includes a pair of a first material forming an endothelium, a second material forming an outer skin, and a third material.

A pair of first materials is formed by laminating a first ePTFE film on one surface of the first TPU film by thermal fusion, and the second material is a second ePTFE film on one surface of the second TPU film is laminated by thermal fusion. is formed Similarly, the third material is formed by laminating an ultra-high molecular weight polyethylene film on one surface of the third TPU film by thermal fusion.

Figure 2 shows a front view and some enlarged views of the dust-free cable protective cover of the present invention. Referring to FIG. 2 , it can be seen that the dust-free cable protection cover of the present invention includes a plurality of cable insertion units, and the lamination unit and the cable insertion unit are arranged in parallel with each other in the longitudinal direction thereof. In addition, referring to FIG. 2, the dust-free cable protective cover of the present invention is heat-sealed between the exposed regions of the second TPU film and the third TPU film to form a lamination portion, and a first TPU film of a pair of first materials It can be seen that a certain space formed by not being exposed and not heat-sealed in a state in which each of the first ePTFE films face each other becomes the cable insertion part.

In the dust-free cable protection cover of the present invention, the cable insertion part is formed at a predetermined interval between the lamination parts, and a cable, electric wire, etc. are inserted into the cable insertion part to realize the cable protection cover. The lamination portion is formed by heat-sealing the overlapping second TPU film of the second material and the third TPU film of the third material, and the cable insertion portion is a pair of first ePTFE films of the first material between the lamination portions, respectively. It is formed in a hollow tube structure in the opposite state. Here, the cable insertion portion is to form a constant space without heat-sealing each of the first ePTFE films of the pair of first materials.

In addition, the dust-free cable protective cover of the present invention may be provided with a plurality of cable insertion parts, the lamination part and the cable insertion part can be arranged in parallel with each other in the longitudinal direction to expand the number of cables, wires, etc. accommodated.

The dust-free cable protective cover of the present invention consists of an inner shell and an outer shell, wherein the inner shell is composed of a first pair of first materials in which a first ePTFE film is formed on one surface of the first TPU film. In addition, the outer shell is composed of a second material in which a second ePTFE film is formed on one surface of the second TPU film and a third material in which an ultra-high molecular weight polyethylene film is formed on one surface of the third TPU film.

In addition, in the dust-free cable protective cover of the present invention, the thickness of the inner shell is preferably 0.1 to 0.5 mm, and the thickness of the outer shell is preferably 0.3 to 0.9 mm.

In the dust-free cable protective cover of the present invention, the second material and the third material are heat-sealed in a state in which the second TPU film and the third TPU film face each other, and an ePTFE film and an ultra-high molecular weight polyethylene film are each formed on one side of the TPU film. The configuration itself is the same, except that it is formed. Accordingly, in the dust-free cable protective cover of the present invention, the second ePTFE film is disposed on one surface of the shell, and the ultra-high molecular weight polyethylene film is disposed on the other surface of the shell. On the other hand, the first, second and third TPU films are preferably polyurethane films, more preferably thermoplastic polyurethane films.

In the dust-free cable protective cover of the present invention, the first material is cut to correspond to the size of the cable insertion part to form the inner skin, and the second material and the third material are cut to correspond to the overall size of the dust-free cable protective cover to form the outer skin to form

When the dust-free cable protective cover of the present invention is implemented, the ePTFE film is placed on the surface of the inner and outer skin to prevent dust from being generated during use. The ePTFE film is made of Teflon and has excellent properties such as heat resistance, durability, insulation, and low friction coefficient. In addition, the ePTFE film is mainly used as a surface component of the inner and outer shells of cable protection covers that have excellent electrical insulation properties, high mechanical and chemical stability, and low friction coefficient, which requires low abrasion properties. When such an ePTFE film is disposed on the surface of the inner shell of the dust-free cable protective cover, it is possible to avoid or suppress damage by friction with cables and wires that are inserted into the cable insertion section and accommodated, and at the same time suppress dust generation due to friction. there is. In addition, when the ePTFE film is disposed on the surface of the outer shell of the dust-free cable protective cover, it is possible to avoid or suppress damage by friction between the cable protective covers and at the same time suppress dust generation by friction.

In the dust-free cable protective cover of the present invention, the ePTFE film may be replaced with a fluoroethylenepropylene (FEP) film, a polyfluoroalkoxy (PFA) film, or the like in some cases.

However, since Teflon material has low hardness, if there is friction with a rigid body with high hardness, abrasion or scratching may occur. In particular, since cables, wires, etc. are moving structures and repeat motion, there is a problem that dust or particles may be generated when the outer skin of the cable protection cover is worn or scratched.

The dust-free cable protective cover of the present invention uses a third material in which an Ultra High Molecular Weight Polyethylene (UHMWPE) film is formed on one surface of the third TPU film to form a part of the outer sheath, so that the dust on the surface of the outer sheath However, the generation of particles can be minimized.

The ultra-high molecular weight polyethylene film is a material with high durability and excellent processability, and has excellent mechanical properties, such as excellent environmental stress cracking resistance (ESCR), high self-lubrication, high mechanical strength, high surface finish, and low shrinkage. indicates characteristics.

In the case of forming a part of the outer sheath using the third material in which the ultra-high molecular weight polyethylene film is formed on one surface of the third TPU film in the dust-free cable protective cover of the present invention, it is more durable than when all of the surface of the outer sheath is formed of an ePTFE film, It is excellent in abrasion resistance and the like, and it is possible to avoid or suppress damage due to friction between the cable protective covers, and at the same time effectively suppress the generation of dust due to friction.

Here, the ultra-high molecular weight polyethylene film formed on the third material preferably has a molecular weight of 3 million to 20 million g/mol, a thickness of 0.03 to 0.60 mm, a molecular weight of 4 million to 10 million g/mol, and a thickness of It is more preferably 0.05 to 0.25 mm.

In addition, the ultra-high molecular weight polyethylene film formed on the third material preferably has a tensile strength of 20 to 50 MPa, an elongation of 200 to 800%, a flexural strength of 10 to 40 MPa, and a flexural modulus of 600 to 1000 MPa. .

In the dust-free cable protective cover of the present invention, the ultra-high molecular weight polyethylene film may be replaced with a high molecular weight polyethylene film, an ultra high molecular weight polypropylene (UHMWPP) film, a high molecular weight polypropylene film, etc. in some cases.

In addition, in the dust-free cable protective cover of the present invention, the second material may be one in which an ultra-high molecular weight polyethylene film is formed on one surface of the second TPU film like the third material, and in this case, a part of the outer shell of the dust-free cable protective cover Rather, as a result of forming an ultra-high molecular weight polyethylene film on both surfaces of the shell, generation of dust or particles on the surface of the shell can be minimized as well.

On the other hand, in the dust-free cable protective cover of the present invention, the melting temperature of the material constituting the ePTFE film and the ultra-high molecular weight polyethylene film is relatively higher than the melting temperature of the material constituting the TPU film. Accordingly, when the pair of first, second and third materials are thermally fused, there is an advantage in that the shape of the dust-free cable protective cover can be easily deformed by using a thermal firing process while maintaining the shape of the cable insertion part.

In addition, in the dust-free cable protective cover of the present invention, antistatic particles having a positive or negative charge such as conductive fabric, conductive nano carbon, conductive metal, conductive polymer, conductive ionomer or conductive adhesive may be formed in the cable insertion part. Furthermore, the antistatic particles, a solvent in which the antistatic particles are dispersed, a surfactant for facilitating dispersion of the particles, and the like may be included in the cable insertion part. Any one selected from the group consisting of conductive fabric, conductive nano carbon, conductive metal, conductive polymer, conductive ionomer, and conductive adhesive is applied, sprayed, immersed or coated in the cable insertion part, thereby exhibiting an excellent antistatic effect.

More specifically, the conductive polymer or ionomer may be any one selected from polyacetylene, polypyrrole, polythiophene, polyphenylene, polyphenylene sulfide, polyaniline, and the like, and preferably a conductive polymer including fluorinated particles. or an ionomer. In addition, the solvent may be an acrylic solvent such as acrylate or an alcohol solvent such as isopropyl alcohol.

In addition, similarly to the outer surface of the dust-free cable protective cover of the present invention, antistatic particles having a positive or negative charge such as conductive fabric, conductive nano carbon, conductive metal, conductive polymer, conductive ionomer or conductive adhesive may be formed. Furthermore, the surface of the outer shell may include the antistatic particles, a solvent in which the antistatic particles are dispersed, a surfactant for facilitating dispersion of the particles, and the like. Any one selected from the group consisting of conductive fabric, conductive nano carbon, conductive metal, conductive polymer, conductive ionomer, and conductive adhesive is applied, sprayed, immersed or coated on the surface of the outer shell, thereby exhibiting an excellent antistatic effect.

Likewise, the conductive polymer or ionomer may be any one selected from polyacetylene, polypyrrole, polythiophene, polyphenylene, polyphenylene sulfide, polyaniline, and the like, and preferably a conductive polymer or ionomer comprising fluorinated particles. can be In addition, the solvent may be an acrylic solvent such as acrylate or an alcohol solvent such as isopropyl alcohol.

In the dust-free cable protective cover of the present invention, the pair of first materials preferably have a width of 10 to 50 mm, more preferably 10 to 30 mm. In addition, the width of the second material and the third material is preferably 100 to 500 mm, more preferably 100 to 300 mm. However, in the second material and the third material, the width of the second TPU film and the third TPU film is preferably 10 to 30 mm greater than the width of the second ePTFE film and the ultra-high molecular weight polyethylene film. Here, the direction of the width means a direction orthogonal to the longitudinal direction of the cable, electric wire, etc. inserted into the cable insertion portion of the dust-free cable protective cover of the present invention. Through a number of repeated experiments, it was confirmed that the durability of the dust-free cable protective cover finally manufactured under the above conditions was the best.

<무분진 케이블 보호 커버의 제조방법><Method for manufacturing dust-free cable protection cover>

On the other hand, the present specification is a pair of first materials in which the first ePTFE (Expanded Polytetrafluoroethylene) film is formed on one side of the first TPU (Thermoplastic Polyurethane, thermoplastic polyurethane) film, the second TPU film one side Preparing a second material in which the second ePTFE film is formed and a third material in which an ultra high molecular weight polyethylene (UHMWPE) film is formed on one surface of the third TPU film; disposing a plurality of the pair of first materials to be spaced apart from each other between the second material and the third material; and heat-sealing the pair of the first material, the second material, and the third material to form a cable insertion part between the lamination part and the lamination part Discloses a method of manufacturing a dust-free cable protection cover .

Here, the above-mentioned <dust-free cable protection cover> applies mutatis mutandis to matters regarding the dust-free cable protection cover.

3 is a flowchart illustrating a method for manufacturing a dust-free cable protection cover according to an embodiment of the present invention. Referring to Figure 3, the manufacturing method of the dust-free cable protective cover of the present invention comprises the steps of manufacturing a pair of a first material, a second material and a third material, and a pair of the first material as a second material and a third material. It can be seen that it includes the steps of arranging a plurality of materials spaced apart from each other and forming a lamination part and a cable insertion part by thermally fusion of a pair of first, second and third materials.

Figure 4a shows in detail the steps of manufacturing a pair of the first material, the second material and the third material in the manufacturing method of the dust-free cable protective cover of the present invention. Referring to FIG. 4A , it can be seen that the width of the pair of first materials is relatively smaller than the widths of the second material and the third material. Here, the direction of the width means a direction orthogonal to the longitudinal direction of the cable, electric wire, etc. inserted into the cable insertion portion of the dust-free cable protective cover of the present invention.

In addition, the pair of first materials is formed by laminating a first ePTFE film on one surface of the first TPU film by thermal fusion, and the second material is a second ePTFE film on one surface of the second TPU film by thermal fusion. combined to form Similarly, the third material is formed by laminating an ultra-high molecular weight polyethylene film on one surface of the third TPU film by thermal fusion.

In the manufacturing method of the dust-free cable protection cover of the present invention, the step of manufacturing the pair of the first material, the second material and the third material is preferably heat-sealed within a range of 100 to 200 ℃, It is more preferable to heat-seal within the range of 140 to 160 ℃. For example, when the step of manufacturing a pair of the first material, the second material and the third material is heat-sealed at a temperature of less than 100 ° C., the ePTFE film or ultra-high molecular weight polyethylene film on one side of the TPU film is not sufficiently heat-sealed. Conversely, when heat-sealed at a temperature higher than 200 ° C., there may be a problem in that the TPU film, ePTFE film, and ultra-high molecular weight polyethylene film are thermally damaged.

In addition, the step of manufacturing the pair of first material, the second material and the third material is preferably heat-sealed within a range of 1 to 7 atmospheres, and heat-sealed within a range of 3 to 5 atmospheres. more preferably. For example, when the step of manufacturing a pair of the first material, the second material and the third material is heat-sealed at a pressure of less than 1 atm, the ePTFE film or ultra-high molecular weight polyethylene film is not sufficiently heat-sealed on one side of the TPU film. Conversely, when heat-sealed at a pressure of more than 7 atmospheres, there may be a problem in that the TPU film, ePTFE film, and ultra-high molecular weight polyethylene film are thermally damaged.

Figure 4b shows in detail the step of arranging a pair of first material in a plurality of spaced apart between the second material and the third material in the manufacturing method of the dust-free cable protective cover of the present invention. Referring to Figure 4b, in the method of manufacturing a dust-free cable protective cover, a pair of first materials is disposed with a plurality of first ePTFE films facing each other between the second material and the third material and spaced apart from each other, the second The material and the third material can be confirmed that the second TPU film and the third TPU film are disposed in a state opposite to each other.

In the method of manufacturing a dust-free cable protective cover of the present invention, the dust-free cable protective cover of the present invention through the step of arranging a plurality of spaced apart between the pair of first materials between the second and third materials, A plurality of cable insertion units may be provided, and the number of cables, wires, etc. accommodated may be expanded by being parallel to each other in the longitudinal direction of the lamination unit and the cable insertion unit.

Figure 4c shows in detail the steps of forming a lamination part and a cable insertion part by heat-sealing a pair of a first material, a second material, and a third material in the manufacturing method of the dust-free cable protective cover of the present invention. Referring to Figure 4c, in the method of manufacturing a dust-free cable protection cover, as a pair of first material, second material and third material are heat-sealed by constant temperature and pressure at the top and bottom, a plurality of cables between the lamination parts It can be seen that the insert will be formed.

In the method of manufacturing a dust-free cable protection cover of the present invention, the step of forming a cable insertion part between the lamination part and the lamination part by heat-sealing the pair of the first material, the second material, and the third material is 100 It is preferable to heat-seal within the range of from to 200 °C, and more preferably heat-seal within the range from 140 to 160 °C. For example, when a pair of first material, second material and third material are heat-sealed to form a cable insertion part between the lamination part and the lamination part is heat-sealed at a temperature of less than 100 ° C., the first material, the first There is a problem that the second material and the third material are not sufficiently heat-sealed with each other, and conversely, when heat-sealed at a temperature of more than 200 ° C., there may be a problem that the TPU film, ePTFE film and ultra-high molecular weight polyethylene film are thermally damaged.

In addition, the step of thermally fusion of the pair of first material, the second material and the third material to form the cable insertion part between the lamination part and the lamination part is to be thermally fused within the range of 1 to 7 atmospheres. Preferably, it is more preferable to heat-seal within the range of 1 to 3 atmospheres. For example, when the step of thermally bonding a pair of first, second and third materials to form a cable insertion part between the lamination part and the lamination part is heat-sealed at a pressure of less than 1 atmosphere, the first material, the first There is a problem that the second material and the third material are not sufficiently heat-sealed to each other, and conversely, when heat-sealed at a pressure of more than 7 atmospheres, there may be a problem that the TPU film, ePTFE film, and ultra-high molecular weight polyethylene film are thermally damaged.

In addition, in the manufacturing method of the dust-free cable protective cover of the present invention, the second material may be one in which an ultra-high molecular weight polyethylene film is formed on one surface of the second TPU film like the third material, in this case, the outer skin of the dust-free cable protective cover As a result of the formation of an ultra-high molecular weight polyethylene film on both the surface of the skin and not a part of the skin, it is possible to minimize the generation of dust or particles on the surface of the skin as well.

On the other hand, in the method for manufacturing a dust-free cable protective cover of the present invention, the melting temperature of the material constituting the ePTFE film and the ultra-high molecular weight polyethylene film is relatively higher than the melting temperature of the material constituting the TPU film. Accordingly, when the pair of first, second and third materials are thermally fused, there is an advantage in that the shape of the dust-free cable protective cover can be easily deformed by using a thermal firing process while maintaining the shape of the cable insertion part.

In addition, in the dust-free cable protective cover of the present invention, antistatic particles having a positive or negative charge such as conductive fabric, conductive nano carbon, conductive metal, conductive polymer, conductive ionomer or conductive adhesive may be formed in the cable insertion part. Furthermore, the antistatic particles, a solvent in which the antistatic particles are dispersed, a surfactant for facilitating dispersion of the particles, and the like may be included in the cable insertion part.

In other words, in the method of manufacturing a dust-free cable protective cover of the present invention, the pair of first materials includes the first ePTFE film formed on one surface of the first TPU film, and a conductive fabric on the other surface of the first ePTFE film, Any one selected from the group consisting of conductive nano-carbon, conductive metal, conductive polymer, conductive ionomer, and conductive adhesive may be formed. Any one selected from the group consisting of conductive fabric, conductive nano carbon, conductive metal, conductive polymer, conductive ionomer, and conductive adhesive is applied, sprayed, immersed or coated in the cable insertion part, thereby exhibiting an excellent antistatic effect.

In the method for manufacturing a dust-free cable protective cover of the present invention, the pair of first materials preferably have a width of 10 to 50 mm, more preferably 10 to 30 mm. In addition, the width of the second material and the third material is preferably 100 to 500 mm, more preferably 100 to 300 mm. However, in the second material and the third material, the width of the second TPU film and the third TPU film is preferably 10 to 30 mm greater than the width of the second ePTFE film and the ultra-high molecular weight polyethylene film. Here, the direction of the width means a direction orthogonal to the longitudinal direction of the cable, electric wire, etc. inserted into the cable insertion portion of the dust-free cable protective cover of the present invention. Through a number of repeated experiments, it was confirmed that the durability of the dust-free cable protective cover finally manufactured under the above conditions was the best.

In order to compare the degree of abrasion of the outer surface of the dust-free cable protective cover of the present invention, another ePTFE film, a rigid PTFE film, a polyacetal (POM) film, and an ultra-high molecular weight polyethylene (UHMWPE) as a friction surface material for the ePTFE film The films were rubbed repeatedly at a speed of 2 m/s each. As a result, in the case of repeated friction between the ePTFE film and the rigid PTFE film, and between the ePTFE film and the polyacetal (POM) film during repeated friction, the wear phenomenon progressed the fastest, and in the case of repeated friction between the ePTFE film and another ePTFE film, the initial wear is small, but the ePTFE film abrasion proceeds as the appropriate number of times passes, resulting in particle agglomeration, which in turn accelerates the abrasion of the ePTFE film.

However, in the case of repeated friction between the ePTFE film and the ultra-high molecular weight polyethylene (UHMWPE) film, the friction coefficient of the ultra-high molecular weight polyethylene (UHMWPE) film is significantly lower than that of other films, and it maintains a higher hardness than the ePTFE film. It was confirmed that no lumps were generated, and therefore the wear phenomenon was also suppressed.

Therefore, the dust-free cable protective cover of the present invention and its manufacturing method minimize the generation of dust on the surface of the outer sheath by heat-sealing the TPU film, ePTFE film and ultra-high molecular weight polyethylene film under optimal conditions, and realize high durability and excellent processability. there is.

The use of all examples or exemplary terms (eg, etc.) in the present invention is merely for the purpose of describing the present invention in detail, and unless defined by the claims, the scope of the present invention is limited by the examples or exemplary terminology. it is not going to be In addition, those skilled in the art can appreciate that various modifications, combinations and changes can be made according to design conditions and factors within the scope of the appended claims or equivalents thereof.

Accordingly, the spirit of the present invention should not be limited to the above-described embodiments, and not only the claims described below, but also all ranges equivalent to or changed from these claims are within the scope of the spirit of the present invention. will be said to belong to

[Explanation of code]

1: Dust-free cable protection cover

10: cable insertion part

20: joint part

100: endothelium

110: first material

120: first TPU film

130: first ePTFE film

200: outer shell

210: second material

220: third material

230: second TPU film

240: second ePTFE film

250: third TPU film

260: ultra-high molecular weight polyethylene (UHMWPE) film

S1000: manufacturing a pair of first material, second material, and third material

S2000: A step of arranging a plurality of spaced apart pairs of the first material between the second material and the third material

S3000: forming a lamination part and a cable insertion part by heat-sealing a pair of the first material, the second material, and the third material

Claims

A first TPU (Thermoplastic Polyurethane, thermoplastic polyurethane) film on one surface of the first ePTFE (Expanded Polytetrafluoroethylene, expanded polytetrafluoroethylene) film is formed a pair of first materials;

a second material having a second ePTFE film formed on one surface of the second TPU film; and

Including a third material in which an ultra high molecular weight polyethylene (UHMWPE) film is formed on one surface of the third TPU film,

A plurality of the pair of first materials are disposed spaced apart from each other between the second material and the third material,

The pair of first material, the second material and the third material are heat-sealed, characterized in that the cable insertion portion is formed between the lamination portion and the lamination portion, a dust-free cable protection cover.
According to claim 1,

The second material is a dust-free cable protective cover, characterized in that the ultra-high molecular weight polyethylene film is formed on one surface of the second TPU film.
According to claim 1,

Dust-free cable protection cover, characterized in that any one selected from the group consisting of conductive fabric, conductive nano carbon, conductive metal, conductive polymer, conductive ionomer and conductive adhesive is formed in the cable insertion part.
According to claim 1,

The pair of first materials have a width of 10 to 50 mm, and the second material and the third material have a width of 100 to 500 mm, a dust-free cable protection cover.
A pair of first materials in which a first expanded polytetrafluoroethylene (ePTFE) film is formed on one side of the first TPU (Thermoplastic Polyurethane, thermoplastic polyurethane) film, and a second ePTFE film on one side of the second TPU film Preparing a third material in which the ultra-high molecular weight polyethylene (UHMWPE) film is formed on one surface of the formed second material and the third TPU film;

disposing a plurality of the pair of first materials to be spaced apart from each other between the second material and the third material; and

A method of manufacturing a dust-free cable protection cover comprising the step of thermally fusion bonding the pair of first material, the second material and the third material to form a cable insertion part between the lamination part and the lamination part.
6. The method of claim 5,

The manufacturing method of the dust-free cable protective cover, characterized in that the step of manufacturing the pair of the first material, the second material and the third material is heat-sealed within a range of 100 to 200 ℃.
6. The method of claim 5,

The manufacturing method of the dust-free cable protective cover, characterized in that in the step of manufacturing the pair of the first material, the second material and the third material is heat-sealed within the range of 1 to 7 atmospheres.
6. The method of claim 5,

The step of forming the lamination part and the cable insertion part is a method of manufacturing a dust-free cable protective cover, characterized in that heat-sealing within a range of 100 to 200 ℃.
6. The method of claim 5,

Forming the lamination part and the cable insertion part is a method of manufacturing a dust-free cable protection cover, characterized in that heat-sealing within the range of 1 to 7 atmospheres.
6. The method of claim 5,

The second material is a method of manufacturing a dust-free cable protective cover, characterized in that the ultra-high molecular weight polyethylene film is formed on one surface of the second TPU film.
6. The method of claim 5,

The pair of first materials includes the first ePTFE film formed on one surface of the first TPU film, and conductive fabric, conductive nano-carbon, conductive metal, conductive polymer, conductive ionomer and conductive on the other surface of the first ePTFE film. A method of manufacturing a dust-free cable protection cover, characterized in that any one selected from the group consisting of adhesives is formed.
6. The method of claim 5,

The pair of first materials have a width of 10 to 50 mm, and the second material and the third material have a width of 100 to 500 mm, a method of manufacturing a dust-free cable protection cover.