A semi-conductive aluminum-plastic composite tape for cables and its preparation method

Abstract

The present invention belongs to the field of cable materials, and particularly relates to a semi-conductive aluminum-plastic composite tape for cables and a preparation method thereof. The adhesive layer in the present invention comprises polybutadiene resin, o-cresol novolac epoxy resin, tertiary amine, methylhexahydrophthalic anhydride, and tert-butylcatechol. The preparation method of the aluminum-plastic composite tape in the present invention obtains the adhesive layer by mixing and stirring raw materials, unrolls the aluminum foil layer and the plastic film layer through a laminator with the aluminum foil layer above the plastic film layer; stirs the adhesive layer through a rotating assembly and applies the adhesive on the plastic film layer through a coating assembly and a blowing assembly, and bonds and hot-presses the aluminum foil layer with the plastic film layer and the adhesive layer through a blowing assembly to obtain an initial composite tape; dries the initial composite tape by heating to obtain the final aluminum-plastic composite tape, improving the quality of the aluminum-plastic composite bag and preventing situations such as glue overflow.

Description

Technical Field

[0001] The present invention belongs to the technical field of cable materials, and particularly relates to a semi-conductive aluminum-plastic composite tape for cables and a preparation method thereof. Background Art

[0002] Aluminum-plastic composite tapes are mainly used in optical cables. Existing aluminum-plastic composite tapes mainly consist of a polyester film layer, an adhesive layer, and an aluminum foil layer. The aluminum foil layer is adhered to one side surface of the polyester film layer by means of the adhesive layer, and it is mainly used to wrap electric wires or cables to shield external electromagnetic interference signals.

[0003] Currently, during the process of manufacturing aluminum-plastic composite bags, when applying the adhesive layer to the polyester film layer, situations such as uneven coating and glue overflow often occur, greatly reducing the quality of the aluminum-plastic composite bags. At the same time, it wastes raw materials and increases the costs of enterprises.

[0004] Chinese Patent with Publication No. CN103112216A discloses an aluminum-plastic composite tape and its manufacturing system, which consists of an aluminum foil layer, an adhesive layer, and a plastic film layer. The adhesive layer is located between the aluminum foil layer and the plastic film layer and bonds the aluminum foil layer and the plastic film layer together. The adhesive layer, by weight, contains the following materials: 100 parts of epoxy resin, 6 - 15 parts of dibutyl phthalate or phosphoric acid diester, 2 - 5 parts of polyamide resin, 2 - 5 parts of silane coupling agent, 1 - 3 parts of epoxy glue curing agent, 1 - 3 parts of magnesium oxide, 2 - 5 parts of glycerol epoxy resin, 2 - 5 parts of aluminum oxide, and 3 - 8 parts of aluminum hydroxide. The present invention also discloses a system for producing aluminum-plastic composite tapes. The present invention has the following beneficial effects: It has fire resistance and flame retardancy characteristics, is simple to manufacture, has a lower cost, and a wider range of applications. However, in this manufacturing system, the glue is dropped onto the plastic film layer through the channel at the bottom of the glue storage device, and the amount of glue cannot be controlled, resulting in quality problems such as glue overflow or insufficient glue in the aluminum-plastic composite bags. Summary of the Invention

[0005] The design objective of the present invention is to provide a semi-conductive aluminum-plastic composite tape for cables.

[0006] The technical solutions adopted by the present invention to solve the above problems are as follows:

[0007] A semi-conductive aluminum-plastic composite tape for cables, which consists of an aluminum foil layer, an adhesive layer, and a plastic film layer. The adhesive layer is located between the aluminum foil layer and the plastic film layer and bonds the aluminum foil layer and the plastic film layer together.

[0008] By using 20 - 60 parts of polybutadiene resin, 40 - 80 parts of o-cresol novolac epoxy resin, 15 - 20 parts of tertiary amine, 70 - 80 parts of methylhexahydrophthalic anhydride, and 1 - 8 parts of tert-butylcatechol, the raw materials are mixed and stirred to obtain the adhesive layer.

[0009] Another object of the present invention is to provide a preparation method of a semi-conductive aluminum-plastic composite tape for cables in view of the deficiencies of the prior art. The aluminum foil layer and the plastic film layer are unrolled by a laminator, and the aluminum foil layer is located above the plastic film layer. The adhesive layer is stirred by a rotating assembly and coated on the plastic film layer through a coating assembly and a blowing glue assembly. The aluminum foil layer is bonded to the plastic film layer and the adhesive layer through a blowing assembly and hot-pressed to obtain an initial composite tape. The initial composite tape is heated and dried to obtain the final aluminum-plastic composite tape, improving the quality of the aluminum-plastic composite bag and preventing glue overflow.

[0010] The technical solutions adopted by the present invention to solve the above problems are as follows:

[0011] A preparation method of a semi-conductive aluminum-plastic composite tape for cables successively includes the following steps:

[0012] S1. Add polybutadiene resin and o-cresol novolac epoxy resin into a reaction kettle for stirring and heating, and then add methyl hexahydrophthalic anhydride into the reaction kettle to obtain a prefabricated material;

[0013] S2. Add tertiary amine into the prefabricated material, stir to obtain an intermediate material, and then add tert-butyl catechol into the intermediate material and stir well to obtain the final adhesive layer;

[0014] S3. Unroll the aluminum foil layer and the plastic film layer through a laminator, and the aluminum foil layer is located above the plastic film layer;

[0015] S4. Stir the adhesive layer through a rotating assembly and coat it on the plastic film layer through a coating assembly and a blowing glue assembly. Bond the aluminum foil layer to the plastic film layer and the adhesive layer through a blowing assembly and hot-press to obtain an initial composite tape;

[0016] S5. Heat and dry the initial composite tape to obtain the final aluminum-plastic composite tape.

[0017] As a preference, in S3, the laminator includes a machine shell, an unwinding roller rotatably arranged on the machine shell, and a hot-pressing roller.

[0018] As a preference, in S4, the rotating assembly includes a fixing plate fixedly arranged on the machine shell, a motor fixedly arranged on the fixing plate, a glue storage tank fixedly connected to the fixing plate, a screw rod rotatably arranged in the glue storage tank, and a through groove opened at the bottom of the glue storage tank. The output end of the motor is connected to the screw rod.

[0019] As a preference, in S4, the glue coating assembly includes a rotating roller rotatably arranged between fixed plates, a through hole opened on the rotating roller, an arc plate fixedly arranged on the fixed plates, a glue discharging plate fixedly connected to the fixed plates, and an opening opened on the glue discharging plate. The inner wall of the arc plate is attached to the outer wall of the rotating roller, the glue discharging plate is attached to the inner wall of the rotating roller, the opening is matched with the through hole, the bottom of the glue storage tank is arc-shaped and matched with the outer surface of the rotating roller, and the through groove is matched with the through hole.

[0020] As a preference, in S4, the glue blowing assembly includes a blowing air pipe fixedly arranged on the fixed plates and an induction switch fixedly arranged on the blowing air pipe.

[0021] As a preference, in S4, the air blowing assembly includes a blowing air roller fixedly arranged between the rotating roller and the hot pressing roller, and air holes opened on the blowing air roller. The air holes are arranged in an inclined structure.

[0022] As a preference, the cross-section of the through hole gradually becomes smaller from top to bottom, and the lower end of the through hole is arranged in a horn shape.

[0023] As a preference, heating devices are arranged in both the arc plate and the glue discharging plate.

[0024] The beneficial effects of the present invention are as follows

[0025] The present invention is provided with a rotating assembly and a glue coating assembly. The motor drives the screw rod to rotate, stirring the glue layer to prevent the glue layer from drying up. When the through hole on the rotating roller corresponds to the through groove, the glue layer falls into the through hole from the through groove, and then can fall on the plastic film layer when it is rotated to the opening on the glue discharging plate. During this rotation process, the arc plate and the glue discharging plate play a role in blocking the glue layer, preventing the glue layer in the through hole from scattering before reaching the opening, and at the same time, the glue layer can be heated. By the way of the through hole bearing the glue layer, a quantitative effect can be achieved, controlling the amount of the glue layer on the plastic film layer and preventing problems such as glue overflow or insufficient glue during lamination.

[0026] The present invention is also provided with a glue blowing assembly and an air blowing assembly. When the induction switch senses the glue layer, the blowing air pipe can be automatically opened to blow air on the glue layer, blowing the glue layer out of the through hole to prevent the glue layer from not being able to fall or falling incompletely in the through hole. At the same time, by the way that the cross-section of the through hole gradually becomes smaller from top to bottom, when the blowing air pipe blows air on the glue layer, the glue layer can accelerate the falling speed when passing through the place with the smallest cross-section, and at the moment of falling out of the lowest end of the through hole, the horn-shaped setting can make the glue layer have a tendency to spread around when falling, and the glue layer can increase the spreading area when falling on the plastic film layer. Subsequently, the gas is input into the blowing air roller by the fan, and the inclined air holes blow air on the aluminum foil layer and the plastic film layer when they enter the hot pressing roller, making the aluminum foil layer and the plastic film layer more closely attached during hot pressing.

[0027] In summary, the present invention has the advantages of good bonding effect and high pressing efficiency, and is suitable for the technical field of cable materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Shows the test results of the aluminum-plastic composite tape in 3 embodiments of the present invention;

[0029] Figure 2 Is a schematic structural diagram of the preparation device of the aluminum-plastic composite tape;

[0030] Figure 3 Is a schematic structural diagram of the glue blowing assembly and the air blowing assembly;

[0031] Figure 4 Is a schematic diagram of the state when the air blowing pipe blows air;

[0032] Figure 5 Is a schematic diagram of the state when the aluminum foil layer and the plastic film layer are bonded through the adhesive layer;

[0033] Figure 6 Is Figure 5 The enlarged view of part A in

[0034] Figure 7 Is Figure 5 The enlarged view of part B in

[0035] Reference numerals: 1 aluminum foil layer, 2 adhesive layer, 3 plastic film layer, 4 compounding machine, 41 machine shell, 42 unwind roller, 43 hot pressing roller, 5 rotating assembly, 51 fixing plate, 52 motor, 53 glue storage tank, 54 screw rod, 55 through groove, 6 glue coating assembly, 61 rotating roller, 62 through hole, 63 arc plate, 64 glue discharging plate, 65 opening, 7 glue blowing assembly, 71 air blowing pipe, 72 induction switch, 8 air blowing assembly, 81 air blowing roller, 82 air hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings. Embodiment 1

[0037] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0038] As Figure 1 And Figure 7As shown in the figure, a semiconductive aluminum-plastic composite tape for cables comprises an aluminum foil layer 1, an adhesive layer 2, and a plastic film layer 3. The adhesive layer 2 is located between the aluminum foil layer 1 and the plastic film layer 3 and bonds the aluminum foil layer 1 and the plastic film layer 3 together.

[0039] As Figure 1 shown in the figure, the adhesive layer comprises the following components by weight: 20 - 60 parts of polybutadiene resin, 40 - 80 parts of o-cresol novolac epoxy resin, 15 - 20 parts of tertiary amine, 70 - 80 parts of methylhexahydrophthalic anhydride, and 1 - 8 parts of tert-butylcatechol.

[0040] A method for preparing a semiconductive aluminum-plastic composite tape for cables successively comprises the following steps:

[0041] S1. Add 20 parts of polybutadiene resin and 40 parts of o-cresol novolac epoxy resin into a reaction kettle, stir and heat, and then add 70 parts of methylhexahydrophthalic anhydride into the reaction kettle to obtain a prefabricated material.

[0042] S2. Add 15 parts of tertiary amine into the prefabricated material, stir to obtain an intermediate material, then add 2 parts of tert-butylcatechol into the intermediate material, and stir well to obtain the final adhesive layer 2.

[0043] S3. Unwind the aluminum foil layer 1 and the plastic film layer 3 through a compounding machine 4, with the aluminum foil layer 1 above the plastic film layer 3.

[0044] S4. Stir the adhesive layer 2 through a rotating assembly 5, apply the adhesive on the plastic film layer 3 through a gluing assembly 6 and a blowing glue assembly 7, and thermally press and bond the aluminum foil layer 1, the plastic film layer 3, and the adhesive layer 2 through a blowing air assembly 8 to obtain an initial composite tape.

[0045] S5. Heat and dry the initial composite tape to obtain the final aluminum-plastic composite tape.

[0046] As Figure 2 shown in the figure, in S3, the compounding machine 4 comprises a machine shell 41, an unwinding roller 42 rotatably arranged on the machine shell 41, and a hot pressing roller 43. During use, unwind the aluminum foil layer 1 and the plastic film layer 3 through the motor-driven unwinding roller 42, and perform hot pressing and integration through the hot pressing roller 43 to form an aluminum-plastic composite tape.

[0047] As Figure 2 shown in the figure, in S4, the rotating assembly 5 comprises a fixing plate 51 fixedly arranged on the machine shell 41, a motor 52 fixedly arranged on the fixing plate 51, a glue storage tank 53 fixedly connected to the fixing plate 51, a screw rod 54 rotatably arranged in the glue storage tank 53, and a through groove 55 opened at the bottom of the glue storage tank 53. The output end of the motor 52 is connected to the screw rod 54. During use, the motor 52 drives the screw rod 54 to rotate to stir the adhesive layer 2 and prevent the adhesive layer 2 from drying up.

[0048] As Figure 2 and Figure 6 shown, in S4, the glue - applying assembly 6 includes a rotating roller 61 rotatably arranged between the fixing plates 51, a through - hole 62 formed in the rotating roller 61, an arc - shaped plate 63 fixedly arranged on the fixing plates 51, a glue - discharging plate 64 fixedly connected to the fixing plates 51, and an opening 65 formed in the glue - discharging plate 64. The inner wall of the arc - shaped plate 63 fits with the outer wall of the rotating roller 61, the glue - discharging plate 64 fits with the inner wall of the rotating roller 61, the opening 65 cooperates with the through - hole 62, the bottom of the glue storage tank 53 is arc - shaped and fits with the outer surface of the rotating roller 61, and the through - slot 55 cooperates with the through - hole 62. Among them, the rotating roller 61 is connected to the output end of the motor 52 through a belt and can drive the rotating roller 61 to rotate. When in use, when the through - hole 62 on the rotating roller 61 corresponds to the through - slot 55, the adhesive layer 2 falls from the through - slot 55 into the through - hole 62, and then when it is rotated to the opening 65 on the glue - discharging plate 64, it can fall on the plastic film layer 3. During this rotation process, the arc - shaped plate 63 and the glue - discharging plate 64 play a role in blocking the adhesive layer 2, preventing the adhesive layer 2 in the through - hole 62 from scattering before reaching the opening 65. By the way of the through - hole 62 carrying the adhesive layer 2, a quantitative effect can be achieved, controlling the amount of the adhesive layer 2 on the plastic film layer 3 and preventing problems such as glue overflow or insufficient glue during lamination.

[0049] As Figure 2 and Figure 6 shown, in S4, the glue - blowing assembly 7 includes a blowing air pipe 71 fixedly arranged on the fixing plates 51 and an induction switch 72 fixedly arranged on the blowing air pipe 71. Among them, the blowing air pipe 71 is connected to the blower. When in use, when the induction switch 72 senses the adhesive layer 2, it can automatically turn on the blowing air pipe 71 to blow air on the adhesive layer 2, blowing the adhesive layer 2 out of the through - hole 62, preventing the adhesive layer 2 from being unable to fall or falling incompletely in the through - hole 62 and getting blocked in the through - hole 62, which affects the next use.

[0050] As Figure 3 shown, in S4, the air - blowing assembly 8 includes an air - blowing roller 81 fixedly arranged between the rotating roller 61 and the hot - pressing roller 43, and air holes 82 formed in the air - blowing roller 81. The air holes 82 are arranged in an inclined structure. When in use, the blower inputs gas into the air - blowing roller 81, and the inclined air holes 82 blow air on the aluminum foil layer 1 and the plastic film layer 3 when they enter the hot - pressing roller 43, making the aluminum foil layer 1 and the plastic film layer 3 fit more closely during hot - pressing.

[0051] As Figure 7As shown in the figure, the cross-section of the through hole 62 gradually becomes smaller from top to bottom, and the lower end of the through hole 62 is set to be trumpet-shaped. By the way that the cross-section of the through hole 62 gradually becomes smaller from top to bottom, when the blowing pipe 71 blows air on the adhesive layer 2, the falling speed of the adhesive layer 2 can be accelerated when it passes through the place with the shortest cross-section, and when it falls out of the lowermost end of the through hole 62, the trumpet-shaped setting can make the adhesive layer 2 have a tendency to spread around when falling. When the adhesive layer 2 falls on the plastic film layer 3, the spreading area can be increased, so that a better bonding effect on the aluminum foil layer 1 and the plastic film layer 3 can be achieved during the later hot pressing and integration.

[0052] As Figure 1 shown in the figure, heating devices are arranged inside both the arc-shaped plate 63 and the glue discharging plate 64 to heat the adhesive layer 2 and prevent the adhesive layer 2 from drying up.

[0053] Finally, performance tests are carried out on the finally obtained aluminum-plastic composite tape in this embodiment. The test items include: viscosity, gel time. The test results are shown in the appendix Figure 1 . Example 2

[0054] The adhesive layer includes the following components by weight: 20-60 parts of polybutadiene resin, 40-80 parts of o-cresol novolac epoxy resin, 15-20 parts of tertiary amine, 70-80 parts of methylhexahydrophthalic anhydride, and 1-8 parts of tert-butylcatechol.

[0055] A preparation method of a semi-conductive aluminum-plastic composite tape for cables successively includes the following steps:

[0056] S1. Add 30 parts of polybutadiene resin and 65 parts of o-cresol novolac epoxy resin into a reaction kettle, stir and heat, and then add 75 parts of methylhexahydrophthalic anhydride into the reaction kettle to obtain a prefabricated material;

[0057] S2. Add 15 parts of tertiary amine into the prefabricated material, stir to obtain an intermediate material, and then add 2 parts of tert-butylcatechol into the intermediate material, and stir evenly to obtain the final adhesive layer 2.

[0058] S3. Unwind the aluminum foil layer 1 and the plastic film layer 3 through a compounding machine 4, and the aluminum foil layer 1 is located above the plastic film layer 3;

[0059] S4. Stir the adhesive layer 2 through a rotating assembly 5, and apply the adhesive on the plastic film layer 3 through a glue applying assembly 6 and a blowing glue assembly 7, and hot press and bond the aluminum foil layer 1, the plastic film layer 3 and the adhesive layer 2 through a blowing assembly 8 to obtain an initial composite tape;

[0060] S5. Dry the initial composite tape by heating to obtain the final aluminum-plastic composite tape.

[0061] Finally, the performance of the ultimately obtained aluminum-plastic composite tape in this embodiment is tested. The test items include viscosity and gel time. The test results are shown in the appendix Figure 1 。 Example 3

[0062] The adhesive layer comprises the following components by weight: 20-60 parts of polybutadiene resin, 40-80 parts of o-cresol novolac epoxy resin, 15-20 parts of tertiary amine, 70-80 parts of methylhexahydrophthalic anhydride, 1-8 parts of tert-butylcatechol, and 20-30 parts of tert-butylcatechol.

[0063] A preparation method of a semiconductive aluminum-plastic composite tape for cables successively comprises the following steps:

[0064] S1. Add 55 parts of polybutadiene resin and 80 parts of o-cresol novolac epoxy resin into a reaction kettle, stir and heat, and then add 80 parts of methylhexahydrophthalic anhydride into the reaction kettle to obtain a prefabricated material;

[0065] S2. Add 20 parts of tertiary amine into the prefabricated material, stir to obtain an intermediate material, add 6 parts of tert-butylcatechol into the intermediate material, and stir well to obtain the final adhesive layer 2.

[0066] S3. Unwind the aluminum foil layer 1 and the plastic film layer 3 through a laminator 4, and the aluminum foil layer 1 is located above the plastic film layer 3;

[0067] S4. Stir the adhesive layer 2 through a rotating assembly 5, apply the adhesive on the plastic film layer 3 through a glue coating assembly 6 and a glue blowing assembly 7, and thermally press and bond the aluminum foil layer 1, the plastic film layer 3 and the adhesive layer 2 through a blowing assembly 8 to obtain an initial composite tape;

[0068] S5. Heat and dry the initial composite tape to obtain the final aluminum-plastic composite tape.

[0069] Finally, the performance of the ultimately obtained aluminum-plastic composite tape in this embodiment is tested. The test items include viscosity and gel time. The test results are shown in the appendix Figure 1 。

[0070] Working process

[0071] The aluminum foil layer 1 and the plastic film layer 3 are unrolled by a motor driving a pay-off roll 42. At the same time, the motor 52 drives a screw rod 54 to rotate to stir the adhesive layer 2. When the through hole 62 on the rotating roller 61 corresponds to the through groove 55, the adhesive layer 2 falls into the through hole 62 from the through groove 55. Subsequently, when it is rotated to the opening 65 on the glue discharging plate 64, the inductive switch 72 senses the adhesive layer 2 and can automatically turn on the air blowing pipe 71 to blow air on the adhesive layer 2 to blow the adhesive layer 2 out of the through hole 62. When the adhesive layer 2 passes through the place with the smallest cross-section, the falling speed can be increased. And when it falls out of the lowermost end of the through hole 62, the horn-shaped setting can make the adhesive layer 2 spread out in all directions when falling. When the adhesive layer 2 falls on the plastic film layer 3, the laying area can be increased. Subsequently, gas is input into the air blowing roller 81 by a blower, and the inclined air holes 82 blow air on the aluminum foil layer 1 and the plastic film layer 3 when they enter the hot pressing roller 43, so that the aluminum foil layer 1 and the plastic film layer 3 are more closely attached during hot pressing.

[0072] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "front and back", "left and right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the invention.

[0073] Certainly, in this technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of this element can be multiple. The term "one" cannot be understood as a limitation on the number.

[0074] The above is only the preferred embodiment of the present invention in conjunction with the drawings, but the present invention is not limited to the above embodiments. It should be noted that for those skilled in the art, without departing from the structure of the present invention, various deformations and improvements can still be made, and these should also be regarded as the protection scope of the present invention, and will not affect the implementation effect and practicability of the present invention.

Claims

1. A preparation method of a semi-conductive aluminum-plastic composite tape for cables, characterized in that It successively includes the following steps: S1. Add polybutadiene resin and o-cresol novolac epoxy resin into a reaction kettle, stir and heat, and then add methyl hexahydrophthalic anhydride into the reaction kettle to obtain a prefabricated material; S2. Add a tertiary amine into the prefabricated material, stir to obtain an intermediate material, add tert-butyl catechol into the intermediate material, and stir well to obtain the final adhesive layer (2); S3. Unwind the aluminum foil layer (1) and the plastic film layer (3) through a laminator (4), and the aluminum foil layer (1) is located above the plastic film layer (3). Among them, the laminator (4) includes a machine shell (41), an unwind roller (42) rotatably arranged on the machine shell (41), and a hot pressing roller (43); S4. Stir the adhesive layer (2) through a rotating assembly (5), apply glue on the plastic film layer (3) through a glue coating assembly (6) and a glue blowing assembly (7), and bond and hot press bond the aluminum foil layer (1) with the plastic film layer (3) and the adhesive layer (2) through a blowing assembly (8) to obtain an initial composite tape. Among them, the rotating assembly (5) includes a fixing plate (51) fixedly arranged on the machine shell (41), a motor (52) fixedly arranged on the fixing plate (51), a glue storage tank (53) fixedly connected to the fixing plate (51), a screw rod (54) rotatably arranged in the glue storage tank (53), and a through groove (55) opened at the bottom of the glue storage tank (53). The output end of the motor (52) is connected to the screw rod (54). The glue coating assembly (6) includes a rotating roller (61) rotatably arranged between the fixing plates (51), a through hole (62) opened on the rotating roller (61), an arc plate (63) fixedly arranged on the fixing plate (51), a glue discharging plate (64) fixedly connected to the fixing plate (51), and an opening (65) opened on the glue discharging plate (64). The inner wall of the arc plate (63) is attached to the outer wall of the rotating roller (61), the glue discharging plate (64) is attached to the inner wall of the rotating roller (61), the opening (65) is matched with the through hole (62), the bottom of the glue storage tank (53) is arc-shaped and is attached to the outer surface of the rotating roller (61), the through groove (55) is matched with the through hole (62), the cross-section of the through hole (62) gradually becomes smaller from top to bottom, and the lower end of the through hole (62) is trumpet-shaped. Heating devices are arranged in both the arc plate (63) and the glue discharging plate (64). The glue blowing assembly (7) includes a blowing pipe (71) fixedly arranged on the fixing plate (51) and an induction switch (72) fixedly arranged on the blowing pipe (71). The blowing assembly (8) includes a blowing roller (81) fixedly arranged between the rotating roller (61) and the hot pressing roller (43), and air holes (82) opened on the blowing roller (81). The air holes (82) are arranged in an inclined structure; S5. Heat and dry the initial composite tape to obtain the final aluminum-plastic composite tape.

Images