CN112757721B - Folding composite belt and preparation method thereof - Google Patents
Folding composite belt and preparation method thereof Download PDFInfo
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- CN112757721B CN112757721B CN202011628928.6A CN202011628928A CN112757721B CN 112757721 B CN112757721 B CN 112757721B CN 202011628928 A CN202011628928 A CN 202011628928A CN 112757721 B CN112757721 B CN 112757721B
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- 239000002131 composite material Substances 0.000 title claims abstract description 140
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 238000003825 pressing Methods 0.000 claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 claims abstract description 21
- 238000005096 rolling process Methods 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 20
- 230000000670 limiting effect Effects 0.000 claims description 13
- 239000004831 Hot glue Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 238000010030 laminating Methods 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000011888 foil Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 239000004677 Nylon Substances 0.000 claims description 2
- 238000013329 compounding Methods 0.000 claims description 2
- 239000011889 copper foil Substances 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 claims description 2
- 229920001778 nylon Polymers 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 229920006324 polyoxymethylene Polymers 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 229930040373 Paraformaldehyde Natural products 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- -1 polyoxymethylene Polymers 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 9
- 239000005020 polyethylene terephthalate Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 7
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/082—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising vinyl resins; comprising acrylic resins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/04—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by at least one layer folded at the edge, e.g. over another layer ; characterised by at least one layer enveloping or enclosing a material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
- H01B11/10—Screens specially adapted for reducing interference from external sources
- H01B11/1008—Features relating to screening tape per se
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid Mechanics (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
The invention provides a folding composite belt and a preparation method thereof, belonging to the technical field of composite belt processing, wherein the preparation method of the composite belt comprises the following steps: mounting the composite belt on a unwinding roller, and then drawing out the composite belt; the drawn composite belt passes through a guide wheel to be limited and guided; folding the drawn composite belt through a V-shaped guide wheel; pressing the obtained composite belt by a pressing wheel; and rolling the folded and pressed composite belt. The invention has simple preparation method, low manufacturing cost and flat folding surface, and solves the problems of edge wiping, serious deviation of folding position, turning-up of folding position and the like.
Description
Technical Field
The invention belongs to the technical field of composite belt processing, and particularly relates to a folding composite belt and a preparation method thereof.
Background
In order to improve EMI resistance, a shielding layer is added to an electric wire when the electric transmission wire is produced. Generally, the shielding layer is a shielding mylar tape composed of a metal foil and a plastic film, and the shielding mylar tape is used for wrapping and shielding a cable in a wrapping mode in a common electric wire, but due to the existence of the plastic film layer, the shielding is not closed, so that the EMI resistance is influenced.
To address this problem, the shielding tape can be folded at a certain angle to form a shielding closure. In the prior art, matched moulds and devices are needed to fold the shielding belt, but the moulds or the devices have complex structures and high cost, have low continuous production degree of the shielding belt, and are not easy to maintain and maintain later. In addition, the existing mould or device has the problems of edge wiping, serious deviation of folding positions and the like when the folding composite belt is produced, and when the folding composite belt is used, the folding position is easy to turn up, so that the shielding and closing effect of the folding position is influenced.
Disclosure of Invention
The present application addresses the deficiencies of the prior art by providing a folded composite strip and a method of making the same. The invention has simple preparation method, low manufacturing cost and flat folding surface, and solves the problems of edge wiping, serious deviation of folding position, turning-up of folding position and the like.
The technical scheme of the invention is as follows:
a method of making a composite folded tape, the method comprising:
(1) Unreeling: mounting the composite belt on a unwinding roller, and then drawing out the composite belt;
(2) Guiding: the drawn composite belt passes through a guide wheel to carry out limiting and guiding;
(3) Folding: folding the composite belt drawn in the step (2) through a V-shaped guide wheel;
(4) And (3) laminating: pressing the composite belt obtained in the step (3) through a pressing wheel;
(5) Winding: and rolling the folded and pressed composite belt.
In the step (1), the composite belt is formed by compounding metal and a film;
preferably, the metal is one or two of aluminum foil and copper foil;
preferably, the film is at least one of PET, PP, PE, PVC, EVA, EAA, PA, PS, PVA, aluminized film or coppered film.
And (2) coating hot melt adhesive on the surface of the composite strip in the step (1).
The guide wheel in the step (2) is an I-shaped guide wheel;
preferably, the width of the guide wheel trough is 1.01 to 1.05 times of the width of the composite belt;
preferably, the groove depth of the guide wheel groove is 175-350 times of the thickness of the composite belt.
In the step (3), at least one V-shaped guide wheel is arranged, and the V-shaped angle of the V-shaped guide wheel is 1-179 degrees;
preferably, the V-shaped guide wheels are arranged in a sequence of decreasing V-shaped angles;
preferably, the V-shaped guide wheel is one or a combination of a V-shaped concave wheel and a V-shaped cam;
preferably, when the V-shaped guide wheel is a V-shaped concave wheel, the inner wall of the V-shaped guide wheel is provided with a concave step, the height of the concave step is 2-4 mm, the included angle of the concave step on the two side walls is 15-80 degrees, and the bottom of the included angle is a circular arc groove with the diameter of 7-11 mm;
preferably, when the V-shaped guide wheel is a V-shaped cam, the included angle of the top of the V-shaped cam is 10-130 degrees, the top of the included angle is a convex arc with the diameter of 1-5 mm, a concave step is arranged between the bottom of the V-shaped convex wall and the part of the non-V-shaped convex wall, the height of the concave step is 3-5 mm, and a concave arc groove with the diameter of 8-10 mm is arranged at the bottom of the concave step.
The number of the V-shaped guide wheels is two or more; the V-shaped angle of the V-shaped guide wheel is 10-130 degrees.
The V-shaped guide wheel in the step (2) is a rubber-coated guide wheel, and the plastic coated on the guide wheel is at least one of nylon, polyurethane or polyformaldehyde.
The pressing temperature of the step (4) is 80-110 ℃, and the pressure is 0.2-0.5 MPa;
preferably, the composite tape coated with the hot melt adhesive is folded from the adhesive surface to the adhesive surface, and then is pressed at 100-110 ℃ and 0.3-0.5 MPa to form the folded composite tape with two folded surfaces bonded together.
And (3) repeating the steps (2) to (4) in sequence to obtain the required folded composite belt.
A composite tape.
The beneficial technical effects of the invention are as follows:
compared with the prior art, the invention has the beneficial effects that:
(1) According to the folding composite belt, the folding of the composite belt is realized by designing the V-shaped angle and the arrangement sequence of the V-shaped guide wheels, the prepared composite belt forms shielding closure, and the anti-EMI performance of a cable is improved.
(2) The folding composite belt is prepared by utilizing the limiting action of the concave step on the V-shaped guide wheel and the guide wheel, and the offset of the folding position is small; when the folding composite belt is produced, the arc groove is arranged at the part with larger friction force of the composite belt, so that the prepared folding composite belt has no edge rubbing problem, and the surface of the composite belt is basically not damaged due to a certain buffer space in the folding process of the composite belt due to the existence of the arc groove; through the arrangement of the bonding layer and the action of temperature and pressure applied by the pressing wheel, the prepared folding composite belt is flat and free of the problem of turning-up of a folding position.
(3) The invention can realize single-side folding, double-side folding or folding of the composite belt at multiple folding positions by adjusting the process, and has the advantages of simple preparation method, easy realization and low manufacturing cost.
Drawings
FIG. 1 is a schematic cross-sectional view of a composite strip of the present invention.
FIG. 2 is a schematic cross-sectional view of a composite strip of the present invention.
FIG. 3 is a schematic cross-sectional view of a composite strip of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Example 1
A folded composite tape and a method of making the same, the method of making comprising the steps of:
1) Unreeling: mounting a roll of 10mm wide composite tape with the structure of AL9/PET 12/hot melt adhesive on a unreeling roller, and then drawing out the composite tape;
2) Guiding: leading the drawn composite belt to pass through a guide wheel with the width of a material groove being 10.3mm and the depth of the material groove being 9mm, and carrying out limiting guide;
3) Folding: respectively folding the composite belt drawn in the step 2) by a glue surface at 1/2 position of the width of the composite belt through a concave guide wheel with an angle of 80 degrees V, a concave guide wheel with an angle of 45 degrees V and a concave guide wheel with an angle of 15 degrees V, wherein the V angles of the concave guide wheels are included angles at the bottom of the guide wheels, the height of a concave step on the inner wall is 2-4 mm, and the bottom of each included angle is a circular arc groove with the diameter of 7-11 mm;
4) And (3) laminating: pressing the composite belt obtained in the step 3) by a pressing wheel at 100 ℃ and 0.4 MPa;
5) Rolling: and rolling the folded and pressed composite belt.
Example 2
A folded composite tape and a method of making the same, the method of making comprising the steps of:
1) Unreeling: a roll of composite tape with the width of 10mm and the structure of AL9/PET 12/hot melt adhesive is arranged on an unwinding roller and then is drawn out;
2) Guiding: the drawn composite belt passes through a guide wheel with the width of a material groove being 10.3mm and the depth of the material groove being 9mm to carry out limiting and guiding;
3) Folding: respectively folding the composite belt drawn in the step 2) by a concave guide wheel with an angle of 80 degrees, a concave guide wheel with an angle of 45 degrees and a concave guide wheel with an angle of 15 degrees at a position of 1/3 of the width of the composite belt, wherein the V angles of the concave guide wheels are included angles at the bottoms of the guide wheels, the height of a concave step on the inner wall is 2-4 mm, and the bottoms of the included angles are circular arc grooves with the diameters of 7-11 mm;
4) And (3) laminating: pressing the composite belt obtained in the step 3) by a pressing wheel at 100 ℃ and 0.4 MPa;
5) Rolling: and rolling the folded and pressed composite belt.
Example 3
A folding composite belt and a preparation method thereof, the preparation method comprises the following steps:
1) Unreeling: mounting a roll of 10mm wide composite tape with the structure of AL9/PET 12/hot melt adhesive on a unreeling roller, and then drawing out the composite tape;
2) Guiding: leading the drawn composite belt to pass through a guide wheel with the width of a material groove being 10.3mm and the depth of the material groove being 9mm, and carrying out limiting guide;
3) Folding: respectively passing the composite belt drawn in the step 2) through a 130-degree V-angle convex guide wheel, a 100-degree V-angle convex guide wheel, a 65-degree V-angle convex guide wheel, a 30-degree V-angle convex guide wheel and a 10-degree V-angle convex guide wheel, and folding the adhesive surface at 1/2 of the width of the composite belt, wherein the V angles of the convex guide wheels are all included angles of the tops of V-shaped cams, the tops of the included angles are convex arcs with the diameters of 1-5 mm, a concave step is arranged between the bottom of each V-shaped convex wall and the position of each non-V-shaped convex wall, the height of each concave step is 3-5 mm, and the bottom of each concave step is provided with a concave arc groove with the diameter of 8-10 mm;
4) And (3) laminating: pressing the composite belt obtained in the step 3) through a wheel combination at 100 ℃ and 0.4 MPa;
5) Winding: and rolling the folded and pressed composite belt.
Example 4
A folded composite tape and a method of making the same, the method of making comprising the steps of:
1) Unreeling: a roll of composite tape with the width of 10mm and the structure of AL9/PET 12/hot melt adhesive is arranged on an unwinding roller and then is drawn out;
2) Guiding: the drawn composite belt passes through a guide wheel with the width of a material groove being 10.3mm and the depth of the material groove being 9mm to carry out limiting and guiding;
3) Folding: respectively folding the composite belt drawn in the step 2) on a glue surface at 1/2 position of the width of the composite belt through a combination of a convex upper guide wheel with an angle of 40 degrees and a concave lower guide wheel with an angle of 45 degrees and a combination of a convex upper guide wheel with an angle of 10 degrees and a concave lower guide wheel with an angle of 12 degrees, wherein the bottom of the V angle of the concave guide wheel is a circular arc groove with a diameter of 7-11 mm, and the top of an included angle of the convex guide wheel is a convex circular arc with a diameter of 1-5 mm;
4) And (3) laminating: pressing the composite belt obtained in the step 3) by a pressing wheel at 100 ℃ and 0.4 MPa;
5) Rolling: and rolling the folded and pressed composite belt.
Example 5
A folding composite belt and a preparation method thereof, the preparation method comprises the following steps:
1) Unreeling: a roll of composite tape with the width of 10mm and the structure of AL9/EVA25 is arranged on a unreeling roller and then is drawn out;
2) Guiding: the drawn composite belt passes through a guide wheel with the width of a material groove being 10.3mm and the depth of the material groove being 9mm to carry out limiting and guiding;
3) Folding: respectively folding the composite belt drawn in the step 2) by a concave guide wheel with an angle of 80 degrees, a concave guide wheel with an angle of 45 degrees and a concave guide wheel with an angle of 15 degrees at a position of 1/2 of the width of the composite belt, wherein the V angles of the concave guide wheels are included angles at the bottoms of the guide wheels, the height of a concave step on the inner wall is 2-4 mm, and the bottom of each included angle is an arc groove with the diameter of 7-11 mm;
4) And (3) laminating: pressing the composite belt obtained in the step 3) by a pressing wheel at 110 ℃ and 0.5MPa;
5) Winding: and rolling the folded and pressed composite belt.
Example 6
A folded composite tape and a method of making the same, the method of making comprising the steps of:
1) Unreeling: a roll of composite tape with the width of 10mm and the structure of AL9/PET 12/hot melt adhesive is arranged on an unwinding roller and then is drawn out;
2) Guiding: the drawn composite belt passes through a guide wheel with the width of a material groove being 10.3mm and the depth of the material groove being 9mm to carry out limiting and guiding;
3) Folding (1): respectively folding the composite belt drawn in the step 2) by a concave guide wheel with an angle of 80 degrees, a concave guide wheel with an angle of 45 degrees and a concave guide wheel with an angle of 15 degrees at a position of 1/4 of the width of the composite belt, wherein the V angles of the concave guide wheels are included angles at the bottoms of the guide wheels, the height of a concave step on the inner wall is 2-4 mm, and the bottoms of the included angles are circular arc grooves with the diameters of 7-11 mm;
4) Pressing (1): pressing the composite belt obtained in the step 3) by a pressing wheel at 100 ℃ and 0.4 MPa;
5) Folding (2): guiding the composite belt obtained in the step 4), and then respectively passing through 80-degree V-angle concave parts
Folding the glue surface at the position of 1/4 of the width of the composite belt in the step 2) to the glue surface, wherein the V angles of the concave guide wheels are included angles at the bottom of the guide wheels, the height of a concave step on the inner wall is 2-4 mm, and the bottom of each included angle is an arc groove with the diameter of 7-11 mm;
6) Pressing (2): pressing the composite belt obtained in the step 5) by a pressing wheel at 100 ℃ and 0.4 MPa;
7) Winding: and (4) rolling the folded and pressed composite belt in the step 6).
Comparative example 1
A folded composite tape and a method of making the same, the method of making comprising the steps of:
1) Unreeling: mounting a roll of 10mm wide composite tape with the structure of AL9/PET 12/hot melt adhesive on a unreeling roller, and then drawing out the composite tape;
2) Guiding: leading the drawn composite belt to pass through a guide wheel with the width of a material groove being 10mm and the depth of the material groove being 9mm, and carrying out limiting guide;
3) Folding: respectively passing the composite belt drawn in the step 2) through a concave guide wheel with an angle of 80 degrees V, a concave guide wheel with an angle of 45 degrees V and a concave guide wheel with an angle of 15 degrees V, folding the adhesive surface at 1/2 of the width of the composite belt, wherein the concave guide wheels have no concave step, and only the bottom of an included angle is an arc groove with a diameter of 7-11 mm;
4) And (3) laminating: pressing the composite belt obtained in the step 3) by a pressing wheel at 100 ℃ and 0.4 MPa;
5) Winding: and rolling the folded and pressed composite belt.
Comparative example 2
A folded composite tape and a method of making the same, the method of making comprising the steps of:
1) Unreeling: a roll of composite tape with the width of 10mm and the structure of AL9/PET 12/hot melt adhesive is arranged on an unwinding roller and then is drawn out;
2) Guiding: the drawn composite belt passes through a guide wheel with the width of a material groove being 10.3mm and the depth of the material groove being 9mm to carry out limiting and guiding;
3) Folding: respectively folding the composite belt drawn in the step 2) by a concave guide wheel with an angle of 80 degrees, a concave guide wheel with an angle of 45 degrees and a concave guide wheel with an angle of 15 degrees at a position of 1/2 of the width of the composite belt, wherein the bottom of the V angle of each concave guide wheel is not provided with a circular arc groove, only the inner wall of the V angle is provided with a concave step, and the height of the concave step is 2-4 mm;
4) And (3) laminating: pressing the composite belt obtained in the step 3) by a pressing wheel at 100 ℃ and 0.4 MPa;
5) Rolling: and rolling the folded and pressed composite belt.
Comparative example 3
A folded composite tape and a method of making the same, the method of making comprising the steps of:
1) Unreeling: mounting a roll of 10mm wide composite tape with the structure of AL9/PET 12/hot melt adhesive on a unreeling roller, and then drawing out the composite tape;
2) Guiding: leading the drawn composite belt to pass through a guide wheel with the width of a material groove being 10.3mm and the depth of the material groove being 9mm, and carrying out limiting guide;
3) Folding: respectively folding the composite belt drawn in the step 2) by a glue surface at 1/2 position of the width of the composite belt through a concave guide wheel with an angle of 80 degrees V, a concave guide wheel with an angle of 45 degrees V and a concave guide wheel with an angle of 15 degrees V, wherein the V angles of the concave guide wheels are included angles at the bottom of the guide wheels, the height of a concave step on the inner wall is 2-4 mm, and the bottom of each included angle is a circular arc groove with the diameter of 7-11 mm;
4) Winding: and (4) rolling the composite belt folded in the step 3).
The folded composite tapes prepared in examples 1-6 and comparative examples 1-3 were subjected to performance testing, as shown in table 1.
Table 1 performance test results of folded composite tapes
As can be seen from table 1, in examples 1 to 6, folding of the composite tape is achieved by the angle gradient design of the V-shaped guide wheel, the side edges of the composite tape are covered with the aluminum foil to form a shielding closure, and there are no problems of edge rubbing, serious deviation of the folding position, turning up of the folding position, and the like, which is helpful for improving the comprehensive performance of the cable.
In the comparative example 1, the concave guide wheel is not provided with the concave step, and the width of the guide wheel is lower than the range of the invention, so that the limiting and guiding effects on the composite belt are weaker, the folding position offset of the obtained folded composite belt is larger, and the quality is unstable; in the comparative example 2, the bottom of the V-shaped angle of the guide wheel is not provided with an arc groove, the composite belt is dragged and rubbed, and the obtained folded composite belt has the problem of edge scraping; in the comparative example 3, a pressing process with certain temperature and pressure is not set, and the folded parts of the obtained folded composite tape cannot be bonded together, so that the problem of flanging is caused, and the shielding effect is further influenced.
The above examples are only intended to illustrate the detailed process of the present invention, and the present invention is not limited to the above detailed process, i.e., it is not intended that the present invention necessarily depends on the above detailed process for its implementation. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
Claims (5)
1. A method of making a folded composite tape, the method comprising:
(1) Unreeling: mounting the composite belt on a unwinding roller, and then drawing out the composite belt;
the surface of the composite tape is coated with hot melt adhesive;
(2) Guiding: the drawn composite belt passes through a guide wheel to carry out limiting and guiding;
the guide wheel is an I-shaped guide wheel; the end face of the guide wheel is provided with a trough in a penetrating manner, and the guide wheel corresponds to each composite belt one by one; the groove width of the guide wheel material groove is 1.01 to 1.05 times of the width of the composite belt; the groove depth of the guide wheel material groove is 175 to 350 times of the thickness of the composite tape;
(3) Folding: folding the composite belt drawn in the step (2) through a V-shaped guide wheel;
the number of the V-shaped guide wheels is more than two;
the V-shaped guide wheels are arranged in a descending order of the V-shaped angle;
the V-shaped guide wheel is one or two combination of a V-shaped concave wheel and a V-shaped cam;
when the V-shaped guide wheel is a V-shaped concave wheel, a concave step is arranged on the inner wall, the height of the concave step is 2 to 4mm, the included angle of the concave steps on the two side walls is 15 to 80 degrees, and a circular arc groove with the diameter of 7 to 11mm is formed at the bottom of the included angle;
when the V-shaped guide wheel is a V-shaped cam, an included angle of the top of the V-shaped cam is 10 to 130 degrees, the top of the included angle is a convex arc with the diameter of 1 to 5mm, a concave step is arranged between the bottom of the V-shaped convex wall and the part of the non-V-shaped convex wall, the height of the concave step is 3 to 5mm, and a concave arc groove with the diameter of 8 to 10mm is arranged at the bottom of the concave step;
(4) And (3) laminating: pressing the composite belt obtained in the step (3) through a pressing wheel;
folding the adhesive surface and the adhesive surface of the composite tape coated with the hot melt adhesive, and pressing at 100-110 ℃ and 0.3-0.5 MPa to form a folded composite tape with two folded surfaces bonded together;
(5) Winding: and rolling the folded and pressed composite belt.
2. The method according to claim 1, wherein the composite tape in step (1) is formed by compounding a metal and a film;
the metal is one or two combinations of aluminum foil and copper foil;
the film is at least one of PET, PP, PE, PVC, EVA, EAA, PA, PS, PVA, aluminized film or coppered film.
3. The method as claimed in claim 1, wherein the V-shaped guide wheel in step (2) is a rubber-coated guide wheel, and the plastic coated on the guide wheel is at least one of nylon, polyurethane or polyoxymethylene.
4. The method of claim 1, wherein the step (2) to the step (4) are repeated in sequence for the composite tape having double-side folding or multiple folding positions, thereby obtaining the desired folded composite tape.
5. A composite tape obtained by the production method according to any one of claims 1 to 4.
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| CN202011628928.6A CN112757721B (en) | 2020-12-30 | 2020-12-30 | Folding composite belt and preparation method thereof |
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| CN202011628928.6A CN112757721B (en) | 2020-12-30 | 2020-12-30 | Folding composite belt and preparation method thereof |
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| CN112757721B true CN112757721B (en) | 2022-11-25 |
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| CN103514984A (en) * | 2013-10-14 | 2014-01-15 | 扬州新奇特电缆材料有限公司 | Copper plastic composite belt and preparing method thereof |
| CN103522659A (en) * | 2013-10-14 | 2014-01-22 | 扬州新奇特电缆材料有限公司 | Adhesive-free copper-plastic composite strip and preparation method thereof |
| CN109648951B (en) * | 2019-01-04 | 2020-07-24 | 江苏科麦特科技发展有限公司 | Non-continuous aluminum-plastic composite belt and preparation method thereof |
| CN109979682A (en) * | 2019-04-03 | 2019-07-05 | 中山市华子电缆有限公司 | A kind of preparation method of flat mouth aluminum foil composite tape |
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