CN112002488A - Production process of corrosion-resistant coaxial cable - Google Patents

Abstract

The invention discloses a production process of a corrosion-resistant coaxial cable, which comprises the following steps of S1, arranging seven inner guide wires at the periphery of an inner guide core at equal intervals; step S2, extruding the aluminum foil fluid melted at high temperature at uniform speed; step S3, extruding the aluminum foil fluid melted at high temperature at uniform speed; step S4, 3-5 PE coatings with the thickness of 0.01-0.05mm are poured on the surface of the outer guide layer; step S5, performing oily film coating on the shielding layer for 2-4 times every 30-45 min; step S6, 2-4 layers of cast stone paint are evenly coated on the inner wall of the polyethylene sheath to form a cast stone paint layer with the thickness of 0.02-0.05 mm. The invention is sequentially sleeved with an inner conducting layer, an insulating layer, an outer conducting layer, a shielding layer, an inner protective layer and an outer protective layer from inside to outside; the inner conducting layer of the coaxial cable is made of the winding binding wires, and the right-inclined aluminum platinum strip and the left-inclined aluminum platinum strip of the single-warp single-weft weaving structure are fixedly nested in the second aluminum foil surface to form the outer conducting layer of the coaxial cable.

Description

Production process of corrosion-resistant coaxial cable

Technical Field

The invention relates to the technical field of coaxial cables, in particular to a production process of a corrosion-resistant coaxial cable.

Background

In 1744, the electric wire has been transported to the beginning, so that the electric wire and the electric cable are formally put into practical use, the history of more than 250 years has been reached so far, in 1925, the inner conductor and the outer conductor are developed into hard conduits, and the successful manufacture of the first insulated coaxial cable made of the glass sheet marks the birth of the coaxial cable product. The function range of coaxial cables is becoming wider and wider with the continuous progress of manufacturing technology, and the coaxial cables are used as antenna feeders of radio frequency transmission and reception equipment, and relate to a plurality of technical fields such as mobile, microwave, broadcast, television, microwave relay and the like.

In order to realize the insulation between the inner conductive core and the outer conductive core of the coaxial cable produced and manufactured under the existing manufacturing technology, a mode of coating an insulating material by injection molding is generally adopted for a double-layer conductive core to form a circle of insulating layer, in order to achieve a better insulating effect, the insulating layer is usually made of foamed plastics, the coaxial cable is in a continuous high-temperature state in the process of electrifying operation, and the insulating material made of the foamed materials is easy to deform and shrink due to heat absorption; in addition, as the voltage carried by the line is larger and larger, the insulation performance of the insulation material used in the traditional technology is difficult to meet the insulation requirements of higher and higher standards; finally, the coaxial cable is usually installed and used outdoors, and the harsh installation and application environment is very easy to cause decay damage to the cable lacking in anticorrosion protection, so that the inner conductive core and the outer conductive core in the coaxial cable are very easy to be exposed outside, thereby affecting the normal transmission of the coaxial cable electrical signal.

Disclosure of Invention

The invention aims to solve the problem that the coaxial cable is difficult to be processed with corrosion resistance in the prior art, and provides a production process of the corrosion-resistant coaxial cable.

In order to achieve the purpose, the invention adopts the following technical scheme:

a production process of an anti-corrosion coaxial cable comprises an inner conducting layer (1), wherein an insulating layer (2) is sleeved outside the inner conducting layer (1), an outer conducting layer (3) is sleeved on the insulating layer (2), a shielding layer (4) is sleeved on the outer conducting layer (3), an inner protective layer (5) is sleeved on the shielding layer (4), and an outer protective layer (6) is sleeved on the inner protective layer (5); the inner guide layer (1) comprises an inner guide core (11), seven inner guide wires (12) are wrapped outside the inner guide core (11), and binding wires (13) are wrapped on the seven inner guide wires (12) in a winding manner; the insulating layer (2) comprises a first aluminum foil surface (21), and PVC bundle wires (22) are wound and wrapped on the first aluminum foil surface (21); the outer conducting layer (3) comprises a second aluminum foil surface (31), and a right-inclined aluminum platinum belt (32) and a left-inclined aluminum platinum belt (33) which are connected are arranged on the second aluminum foil surface (31); the shielding layer (4) comprises a PE foamed insulating layer (41), and a double-sided PVC bandage (42) is fixedly bonded on the PE foamed insulating layer (41); the inner waterproof layer (5) comprises an oily film waterproof layer (51), and a halogen-free flame retardant tape (52) is fixedly bonded on the oily film waterproof layer (51); the outer protective layer (6) comprises a polyethylene sheath (62), a cast stone paint layer (61) is cast and coated on the inner wall of the polyethylene sheath (62), and a PVC adhesive tape (63) is bonded on the cast stone paint layer (61) and the polyethylene sheath (62) together; the production process is characterized by comprising the following steps:

step S1, arranging seven inner guide wires (12) at equal intervals on the periphery of the inner guide core (11), utilizing perfusion gel for 20-25min until the inner guide wires are shaped, and winding binding wires (13) on the inner guide wires (12) to form an inner guide layer (1) by synchronously drawing and rotating the shaped inner guide core (11) and the inner guide wires (12);

step S2, extruding the high-temperature molten aluminum foil fluid at a constant speed, pouring aluminum foil coating on the inner conductive layer (1), cooling for 1.5-2 hours to form a first aluminum foil surface (21) with the thickness of 0.07-0.1mm, and winding PVC bundle wires (22) on the shaped first aluminum foil surface (21) to form an insulating layer (2);

step S3, extruding the high-temperature molten aluminum foil fluid at a constant speed, pouring an aluminum foil coating on the insulating layer (2), fixing, pressing, weaving and forming a right-inclined aluminum platinum belt (32) and a left-inclined aluminum platinum belt (33) on a second aluminum foil surface (31) with the thickness of 0.03-0.05mm, and after cooling for 1-1.5h, carrying out blade coating on the surfaces of the right-inclined aluminum platinum belt and the left-inclined aluminum platinum belt to form an outer guide layer (3) with the thickness of 0.12-0.15 mm;

step S4, 3-5 layers of PE coating with the thickness of 0.01-0.05mm are poured on the surface of the outer conducting layer (3), a PE foamed insulating layer (41) is formed after the PE foamed insulating layer is kept stand for 0.5-1h, and a PVC bandage (42) is fixedly adhered on the PE foamed insulating layer (41) through gel to form a shielding layer (4);

step S5, performing oily film casting coating on the shielding layer (4) for 2-4 times at intervals of 30-45min to form an oily film waterproof layer (51) with the thickness of 0.02-0.04mm, and then adhering a halogen-free flame retardant tape (52) on the oily film waterproof layer (51) through gel to form an inner waterproof layer (5);

step S6, 2-4 layers of cast stone paint are evenly coated on the inner wall of the polyethylene sheath (62) to form a cast stone paint layer (61) with the thickness of 0.02-0.05mm, the polyethylene sheath (62) is wound on the inner protective layer (5), and then the PVC bandage (63) is fixedly bonded on the polyethylene sheath (62) by utilizing gel to form a finished coaxial cable.

In this case, the purity of the aluminum foil coating used for the first aluminum foil surface (21) in step S2 is 30%, and the purity of the aluminum foil coating used for the second aluminum foil surface (31) in step S3 is 45%.

In this case, the right-leaning aluminum platinum strips (32) and the left-leaning aluminum platinum strips are located in the second aluminum foil surface (31).

Preferably, the purity of the cast stone paint in the step S6 is 45%, and the polyethylene sheath (62) and the PVC bandage (63) are distributed in the transverse direction and the longitudinal direction, respectively.

Compared with the prior art, the invention has the following advantages:

1. the invention utilizes gel to arrange seven inner guide wires which are circumferentially distributed on an inner guide core, and utilizes a winding binding wire to manufacture an inner guide layer of a coaxial cable; the second aluminum foil surface is formed by coating an aluminum foil material on the insulating layer, and a right-inclined aluminum platinum belt and a left-inclined aluminum platinum belt of a single-warp single-weft weaving structure are fixedly nested in the second aluminum foil surface to form an outer guiding layer of the coaxial cable.

2. The invention is characterized in that a first aluminum foil surface is coated on an inner conducting layer, and PVC bundle wires with insulating property are uniformly wound on the first aluminum foil surface to form an insulating effect between the inner conducting layer and an outer conducting layer; the PE foaming insulating layer is formed by pouring on the outer conducting layer, and the PVC bandage is used for locking and sealing the PE foaming insulating layer, so that the shielding layer with a secondary insulating effect is formed.

3. According to the invention, the oily film waterproof layer is formed by casting and coating on the shielding layer, so that the sealing and waterproof effects are achieved; coating the oily film waterproof layer by using a halogen-free flame-retardant belt made of polyolefin material, so that carbon dioxide and water are decomposed when the coaxial cable is subjected to combustion to inhibit the combustion; a cast stone paint layer with anti-corrosion performance is coated on the inner wall of the polyethylene sliding sleeve, and a PVC adhesive tape is fixedly bonded to provide anti-corrosion protection for the coaxial cable.

4. In summary, the invention is sequentially sleeved with the inner conducting layer, the insulating layer, the outer conducting layer, the shielding layer, the inner protective layer and the outer protective layer from inside to outside; an inner guide layer of the coaxial cable is made by utilizing a winding binding wire, and a right-inclined aluminum platinum belt and a left-inclined aluminum platinum belt of a single-warp single-weft weaving structure are fixedly nested in a second aluminum foil surface to form an outer guide layer of the coaxial cable; the insulating layer and the shielding layer are arranged in a layered manner to form two layers of insulating and shielding effects of the coaxial cable; a paint film waterproof layer and a halogen-free flame retardant tape are sequentially arranged on the shielding layer to provide waterproof and flame retardant protection for the coaxial cable; a cast stone paint layer with anti-corrosion performance is coated on the inner wall of the polyethylene sliding sleeve, and a PVC adhesive tape is fixedly bonded to provide anti-corrosion protection for the coaxial cable.

5. The production process of the coaxial cable is simple, efficient and low in cost, and the corrosion-resistant coaxial cable can be reliably produced.

Drawings

FIG. 1 is a schematic structural view of a coaxial cable produced by the present invention;

FIG. 2 is a schematic cross-sectional view of the inner conductive layer of a coaxial cable produced by the present invention;

FIG. 3 is a schematic view of the connection structure of the inner conductive layer and the insulating layer of the coaxial cable produced by the present invention;

FIG. 4 is a schematic view of the connection structure of the insulating layer and the outer conductive layer of the coaxial cable produced by the present invention;

FIG. 5 is a schematic view of the connection structure of the outer conductive layer and the shielding layer of the coaxial cable produced by the present invention;

FIG. 6 is a schematic view of the connection structure of the shielding layer and the inner shielding layer of the coaxial cable produced by the present invention;

fig. 7 is a schematic view of the connection structure of the inner shield layer and the outer shield layer of the coaxial cable produced by the present invention.

In the figure: the anti-corrosion plastic composite wire comprises an inner conducting layer 1, an inner conductingcore 11, an inner conductingwire 12, abinding wire 13, aninsulating layer 2, a firstaluminum foil surface 21, aPVC bundle wire 22, an outer conductinglayer 3, a secondaluminum foil surface 31, an aluminum platinum belt with aright inclination 32, an aluminum platinum belt with aleft inclination 33, a shielding layer 4, a foamedPE insulating layer 41, aPVC bandage 42, an innerprotective layer 5, an oily filmwaterproof layer 51, a halogen-free flameretardant belt 52, an outerprotective layer 6, a caststone paint layer 61, apolyethylene sheath 62 and a PVCadhesive tape 63.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-7, an anti-corrosion coaxial cable comprises an inner conducting layer 1, wherein aninsulating layer 2 is sleeved outside the inner conducting layer 1, an outer conductinglayer 3 is sleeved on theinsulating layer 2, a shielding layer 4 is sleeved on the outer conductinglayer 3, an innerprotective layer 5 is sleeved on the shielding layer 4, and an outerprotective layer 6 is sleeved on the innerprotective layer 5;

the inner guide layer 1 comprises aninner guide core 11, theinner guide core 11 adopts a metal copper wire with the diameter of 0.3-0.4mm, seveninner guide wires 12 are wrapped outside theinner guide core 11,binding wires 13 are wrapped on the seveninner guide wires 12 in a winding manner, and thebinding wires 13 adopt oxygen-free copper wires with the diameter of 0.05-0.1 mm;

theinsulating layer 2 comprises a firstaluminum foil surface 21, aPVC bundle wire 22 is wound and wrapped on the firstaluminum foil surface 21, and thePVC bundle wire 22 wraps the firstaluminum foil surface 21 comprehensively so as to isolate the inner channel layer 1 from the outer conductinglayer 3;

the outerconductive layer 3 includes a secondaluminum foil surface 31, and the secondaluminum foil surface 31 is provided with a right-inclinedaluminum platinum strip 32 and a left-inclinedaluminum platinum strip 33 which are connected to each other, specifically referring to fig. 1 and fig. 4, it can be seen that the right-inclinedaluminum platinum strip 32 and the left-inclinedaluminum platinum strip 33 are integrally nested in the secondaluminum foil surface 31;

the shielding layer 4 comprises a PE foamedinsulating layer 41, the PE foamedinsulating layer 41 wraps the outer conductinglayer 3 comprehensively, a double-sided PVC bandage 42 is fixedly bonded on the PE foamedinsulating layer 41, and the double-sided PVC bandage 42 tightened on the PE foamedinsulating layer 41 can seal and fix the PE foamedinsulating layer 41 comprehensively so as to prevent the PE foamedinsulating layer 41 from deforming due to thermal expansion;

the innerwaterproof layer 5 comprises an oily filmwaterproof layer 51, and a halogen-free flameretardant tape 52 is fixedly bonded on the oily filmwaterproof layer 51;

it should be noted that:

firstly, a plurality of oil droplets are actively adhered to the oily filmwaterproof layer 51, and the oil droplets have water-resisting property and can isolate water molecules adhered to the coaxial cable;

second, the halogen-free flame-retardant band 52 is composed of hydrocarbon, decomposes crude carbon dioxide and water during combustion, and does not generate significant smoke and harmful gases. The polyolefin mainly comprises polyethylene and ethylene-vinyl acetate polymers, the materials do not have flame retardant effect, and the practical halogen-free flame retardant material is processed and formed by adding inorganic flame retardant and phosphorus series flame retardant.

Thirdly, due to the lack of polar groups on the molecular chain of the nonpolar substance, the hydrophobic property is caused, the affinity performance with the inorganic flame retardant is poor, and the firm combination is difficult. In order to improve the surface activity of the polyolefin, a surfactant can be added into the formula; or the polyolefin is mixed with the polymer containing polar groups for blending, thereby increasing the dosage of the flame retardant filler, improving the mechanical property and the processing property of the material and simultaneously obtaining better flame retardance.

The outerprotective layer 6 comprises apolyethylene sheath 62, a caststone paint layer 61 is coated on the inner wall of thepolyethylene sheath 62 in a pouring mode, and a PVCadhesive tape 63 is bonded on the caststone paint layer 61 and thepolyethylene sheath 62 together.

It is worth noting that:

the wear-resisting coefficient of the caststone paint layer 61 made of the cast stone material is 0.09-0.14 g/square centimeter, the corrosion resistance is strong, and the cast stone paint layer can resist corrosion of any acid and alkali besides hydrofluoric acid and hot phosphoric acid, and the existing data research shows that the acid resistance is greater than 96% and the alkali resistance is greater than 98%.

Referring specifically to fig. 1, an inner conductive layer 1, aninsulating layer 2, an outerconductive layer 3, a shielding layer 4, aninner shielding layer 5 and anouter shielding layer 6 are distributed from the inside to the outside.

Seveninner guide wires 12 are circumferentially and equidistantly distributed outside theinner guide core 11, and thebinding wires 13 are obliquely distributed, and it is noted that the seveninner guide wires 12 can also be processed into a twisted wire structure to wrap and sleeve theinner guide core 11.

Referring to fig. 4 for description, the right-inclinedaluminum platinum band 32 and the left-inclinedaluminum platinum band 33 are connected in a single-warp single-weft weaving manner, the right-inclinedaluminum platinum band 32 is located in the left-inclinedaluminum platinum band 33, and the secondaluminum foil surface 31 can be subjected to overall insulation treatment under the overall wrapping condition that the right-inclinedaluminum platinum band 32 is located in the left-inclinedaluminum platinum band 33.

The double-sided PVC bandages 42 are circumferentially and equidistantly distributed on the PEfoam insulation layer 41, and the halogen-free flameretardant tapes 52 are circumferentially and equidistantly distributed on the oily filmwaterproof layer 51, so as to effectively protect the coaxial cables under the waterproof and fireproof dual isolation protection effects of the oily filmwaterproof layer 51 and the halogen-free flameretardant tapes 52.

A production mode of a corrosion-resistant coaxial cable comprises the following steps:

step S1, arranging seveninner guide wires 12 at equal intervals on the periphery of theinner guide core 11, pouring gel for 20-25min to shape, standing and cooling to normal temperature, solidifying and forming the restinner guide wires 12 of theinner guide core 11 by the gel, and winding bindingwires 13 on theinner guide wires 12 to form the inner guide layer 1 by synchronously drawing and rotating the shapedinner guide core 11 andinner guide wires 12;

step S2, extruding the high-temperature molten aluminum foil fluid at a constant speed, pouring an aluminum foil coating on the inner conductive layer 1, cooling for 1.5-2 hours to form a firstaluminum foil surface 21 with the thickness of 0.07-0.1mm, windingPVC bundle wires 22 on the shaped firstaluminum foil surface 21 to form aninsulating layer 2, and insulating and sealing the inner conductive layer 1 under the overall wrapping and isolating action of thePVC bundle wires 22;

step S3, extruding the high-temperature molten aluminum foil fluid at a constant speed, pouring an aluminum foil coating on theinsulating layer 2, fixing a right-inclinedaluminum platinum belt 32 and a left-inclinedaluminum platinum belt 33 which are formed by pressing and weaving on a secondaluminum foil surface 31 with the thickness of 0.03-0.05mm, cooling for 1-1.5h, and then forming anouter guide layer 3 with the thickness of 0.12-0.15mm by blade coating on the surface;

step S4, 3-5 layers of PE coating with the thickness of 0.01-0.05mm are poured on the surface of theouter conducting layer 3, the PE foamed insulatinglayer 41 is formed after standing for 0.5-1h, aPVC bandage 42 is fixedly adhered to the PE foamed insulatinglayer 41 through gel to form a shielding layer 4, and theouter conducting layer 3 can be insulated and sealed under the wrapping protection of the shielding layer 4;

step S5, performing oily film casting coating on the shielding layer 4 for 2-4 times every 30-45min to form an oily filmwaterproof layer 51 with the thickness of 0.02-0.04mm, and then adhering a halogen-freeflame retardant tape 52 on the oily filmwaterproof layer 51 through gel to form aninner prevention layer 5;

after the oily filmwaterproof layer 51 and the halogen-freeflame retardant tape 52 are molded, waterproof and flame retardant protection can be provided for the coaxial cable.

Step S6, 2-4 layers of cast stone paint are evenly coated on the inner wall of thepolyethylene sheath 62 to form a caststone paint layer 61 with the thickness of 0.02-0.05mm, thepolyethylene sheath 62 is wound on the innerprotective layer 5, aPVC bandage 63 is fixedly bonded on thepolyethylene sheath 62 by utilizing gel to form a finished coaxial cable, and thepolyethylene sheath 62 can be reinforced by utilizing thePVC bandage 63 to ensure the structural toughness of thepolyethylene sheath 62 as a jacket of the coaxial cable.

The purity of the aluminum foil coating used for the firstaluminum foil surface 21 in step S2 is 30%, and the purity of the aluminum foil coating used for the secondaluminum foil surface 31 in step S3 is 45%, so as to ensure the structural strength and the conductivity level of the firstaluminum foil surface 21 and the secondaluminum foil surface 31.

The right-leaningaluminum foil strip 32 and the left-leaning aluminum foil strip are located in the secondaluminum foil surface 31.

In step S6, the purity of the cast stone paint is 45%, and thepolyethylene sheath 62 and thePVC bandage 63 are respectively distributed in the transverse direction and the longitudinal direction, so that the caststone paint layer 61 on thepolyethylene sheath 62 has a sufficient protection effect under the reinforcing effect of thePVC bandage 63.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (3)

1. A production process of an anti-corrosion coaxial cable comprises an inner conducting layer (1), wherein an insulating layer (2) is sleeved outside the inner conducting layer (1), an outer conducting layer (3) is sleeved on the insulating layer (2), a shielding layer (4) is sleeved on the outer conducting layer (3), an inner protective layer (5) is sleeved on the shielding layer (4), and an outer protective layer (6) is sleeved on the inner protective layer (5); the inner guide layer (1) comprises an inner guide core (11), seven inner guide wires (12) are wrapped outside the inner guide core (11), and binding wires (13) are wrapped on the seven inner guide wires (12) in a winding manner; the insulating layer (2) comprises a first aluminum foil surface (21), and PVC bundle wires (22) are wound and wrapped on the first aluminum foil surface (21); the outer conducting layer (3) comprises a second aluminum foil surface (31), and a right-inclined aluminum platinum belt (32) and a left-inclined aluminum platinum belt (33) which are connected are arranged on the second aluminum foil surface (31); the shielding layer (4) comprises a PE foamed insulating layer (41), and a double-sided PVC bandage (42) is fixedly bonded on the PE foamed insulating layer (41); the inner waterproof layer (5) comprises an oily film waterproof layer (51), and a halogen-free flame retardant tape (52) is fixedly bonded on the oily film waterproof layer (51); the outer protective layer (6) comprises a polyethylene sheath (62), a cast stone paint layer (61) is cast and coated on the inner wall of the polyethylene sheath (62), and a PVC adhesive tape (63) is bonded on the cast stone paint layer (61) and the polyethylene sheath (62) together; the production process is characterized by comprising the following steps:

step S1, arranging seven inner guide wires (12) at equal intervals on the periphery of the inner guide core (11), utilizing perfusion gel for 20-25min until the inner guide wires are shaped, and winding binding wires (13) on the inner guide wires (12) to form an inner guide layer (1) by synchronously drawing and rotating the shaped inner guide core (11) and the inner guide wires (12);

step S2, extruding the high-temperature molten aluminum foil fluid at a constant speed, pouring aluminum foil coating on the inner conductive layer (1), cooling for 1.5-2 hours to form a first aluminum foil surface (21) with the thickness of 0.07-0.1mm, and winding PVC bundle wires (22) on the shaped first aluminum foil surface (21) to form an insulating layer (2);

step S3, extruding the high-temperature molten aluminum foil fluid at a constant speed, pouring an aluminum foil coating on the insulating layer (2), fixing, pressing, weaving and forming a right-inclined aluminum platinum belt (32) and a left-inclined aluminum platinum belt (33) on a second aluminum foil surface (31) with the thickness of 0.03-0.05mm, and after cooling for 1-1.5h, carrying out blade coating on the surfaces of the right-inclined aluminum platinum belt and the left-inclined aluminum platinum belt to form an outer guide layer (3) with the thickness of 0.12-0.15 mm;

step S4, 3-5 layers of PE coating with the thickness of 0.01-0.05mm are poured on the surface of the outer conducting layer (3), a PE foamed insulating layer (41) is formed after the PE foamed insulating layer is kept stand for 0.5-1h, and a PVC bandage (42) is fixedly adhered on the PE foamed insulating layer (41) through gel to form a shielding layer (4);

step S5, performing oily film casting coating on the shielding layer (4) for 2-4 times at intervals of 30-45min to form an oily film waterproof layer (51) with the thickness of 0.02-0.04mm, and then adhering a halogen-free flame retardant tape (52) on the oily film waterproof layer (51) through gel to form an inner waterproof layer (5);

step S6, 2-4 layers of cast stone paint are evenly coated on the inner wall of the polyethylene sheath (62) to form a cast stone paint layer (61) with the thickness of 0.02-0.05mm, the polyethylene sheath (62) is wound on the inner protective layer (5), and then the PVC bandage (63) is fixedly bonded on the polyethylene sheath (62) by utilizing gel to form a finished coaxial cable.

2. The process of claim 1, wherein the first aluminum foil surface (21) of step S2 is coated with 30% pure aluminum foil and the second aluminum foil surface (31) of step S3 is coated with 45% pure aluminum foil.

3. A process for the production of a corrosion resistant coaxial cable according to claim 1 wherein the right-angled aluminum foil strip (32) and the left-angled aluminum foil strip are located in the second aluminum foil face (31).

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