WO2022057253A1

WO2022057253A1 - Mica tape capable of being wound at any length in ultra-wide manner, and manufacturing method therefor

Info

Publication number: WO2022057253A1
Application number: PCT/CN2021/087808
Authority: WO
Inventors: 潘渡江; 李新辉; 方丁雄; 邓志军; 李俊
Original assignee: 湖北平安电工科技股份公司
Priority date: 2020-09-21
Filing date: 2021-04-16
Publication date: 2022-03-24
Also published as: CN112271045A

Abstract

A mica tape (1) which is capable of being wound at any length in an ultra-wide manner and a manufacturing method therefor. The manufacturing method comprises the following steps: (a) respectively unrolling mica paper (11) and a reinforcing material (12); (b) gluing the reinforcing material (12), and compounding the glued reinforcing material with the mica paper (11), the amount of glue being controlled by means of a metering rod, so as to obtain composite paper; (c) sequentially carrying out drying, curing and rolling treatments on the composite paper to obtain a mica tape blank; (d) cutting the mica tape blank into mica tape reels of a required width; (e) treating the mica tape reels obtained in step (d) by means of an automatic deviation correction device, a constant tension control device and a rolling deviation correction device, and then winding the mica tape reels into mica tape rolls (2) by means of a coiling device; (f) connecting the mica tape rolls (2) obtained in step (e) end to end; and (g) repeating steps (e) and (f) to meet the production requirement of any length.

Description

A kind of ultra-wide winding mica tape of arbitrary length and method of making the same

technical field

The invention belongs to the field of electrical insulating materials, and in particular relates to an ultra-wide winding mica tape of any length and a manufacturing method thereof.

Background technique

Mica tape for fire-resistant safety cable is based on temperature-resistant insulating mica paper, with electronic-grade alkali-free glass fiber cloth (or film, etc.) as reinforcing material, impregnated with high-temperature silicone adhesive, compounded, baked, slitted The mica tape is wrapped around the core wire by the wrapping machine, so that the finished cable can keep safe for a certain period of time under the condition of flame burning.

Ultra-wide mica tape mainly refers to mica tape with a width of more than 20mm. It is usually used for wrapping large wire diameter cables. It is mainly used for wrapping mica tapes of insulating cores such as control cables and optical cables. The number of wrapping layers ranges from double-layer to More than six floors, mainly used in power plants, airports, ships, high-rise buildings, subways and other places, the demand is increasing. Due to the limitations of the wrapping equipment, the length of a single reel of ultra-wide mica tape is currently limited, generally within 1000m per reel. Therefore, customers frequently stop and connect during wrapping, which seriously affects the cable quality and production efficiency. At the same time, the current ultra-wide mica tapes are cut in the form of a single disc, and the longest length of a single disc product will not exceed 1000m. The existing length cannot meet the requirements of the manufacturing industry to develop in the direction of automation.

At present, the winding method proposed in "A Manufacturing Method of Winding Fire-Resistant Mica Tape of Arbitrary Length" (patent number CN103050200), the entry angle of the mica tape is perpendicular to the tube core, and the mica tape offset occurs between the winding arm and the winding shaft. In between, since the inner diameter of the winding tube core is usually a fixed value of 76mm, when starting, the angle between the extension line of the entry angle of the mica tape and the extension line of the offset of the winding mica tape is also basically fixed at a fixed value. When the width of the mica tape increases, the greater the margin of the mica tape on the deflection side, the more likely the mica tape will be wrinkled, which will lead to quality problems such as frequent tape breakage during the cable wrapping process. The greater the tension and the pressure of the winding arm, the greater the difficulty of winding. The conventional winding method is generally suitable for the winding of mica tapes with a width of 20mm and below.

SUMMARY OF THE INVENTION

In order to overcome the deficiencies of the prior art, one of the objects of the present invention is to provide a method for manufacturing an ultra-wide coiled mica tape of any length, to meet the needs of customization of any length of the wide coiled mica tape, with little difficulty in winding and not easy There are problems such as wrinkle and broken belt.

The second purpose of the present invention is to provide an ultra-wide coiled mica tape of any length, and the ultra-wide mica tape with a width of more than 20 mm can be customized in any length.

The purpose of the present invention adopts following technical scheme to realize:

A method for manufacturing an ultra-wide winding mica tape of any length, comprising the following steps:

(a) Unwind the mica paper and the reinforcing material separately;

(b) compounding the reinforcing material with mica paper after gluing, and controlling the amount of glue through a metering rod to obtain a compound paper;

(c) the composite paper is successively subjected to drying, curing and winding treatment to obtain a mica tape blank;

(d) cutting mica tape blanks into mica tape reels of the required width;

(e) after the mica tape reel obtained in the step (d) is processed by the automatic deviation rectification device, the constant tension control device and the winding rectification device, the mica tape reel is wound into the mica tape by the coiling device;

(f) docking the mica tapes obtained in step (e);

(g) Steps (e)-(f) are repeated to achieve production requirements of any length.

Further, in step (a), the mica paper is any one of phlogopite paper, muscovite paper, synthetic mica paper, calcined phlogopite paper and calcined muscovite paper.

Further, in step (a), the reinforcing material is any one of glass fiber cloth, film and ceramicized silicone rubber coating.

Further, in step (b), the gluing method is any one of roller coating, slit, mesh and curtain coating, and the metering bar is a Meyer bar or a wire bar.

Further, it also includes a secondary slitting step, the secondary slitting step is specifically as follows: the mica tape reel obtained in step (d) is cut into several mica tapes of required widths through a precision slitting machine, It is wound after the material disperser.

Further, in step (e), the automatic deviation correction device is a combination of one or more of a reflection type deviation correction control system, a positioning wheel, a deviation adjustment wheel, etc. Combined deviation correction;

The reeling device adopts the rewinding end reeling arm translation method for rewinding or the reeling end reeling shaft translation method for reeling.

Further, in step (f), the processing operation of the butt joint of the mica tape and the reel adopts one of organic silica gel docking and glue film docking.

Further, the organic silica gel docking is specifically as follows: firstly, the butt joints of the mica tapes are cut neatly, the reinforcing material and the mica paper are wetted by 30-60 mm, the mica paper layer and the reinforcing material layer are separated, and the separated mica paper layer is removed. , and then apply organic silica gel on the reinforcing material, dry it with a hot air gun, cut it neatly, and do anti-sticking treatment, gently pull the joint by hand if it does not fall off, and there is no gap at the butt joint, the joint is qualified.

Further, the butting of the gluing films is specifically as follows: firstly, the butt joints of the mica tapes are trimmed neatly, and the joints of the two mica tapes are butted through the adhesive film, and the length of the films is 30-60cm. , there is no gap at the butt joint, the joint is qualified.

A mica tape that can be wound with any length and ultra-wide is prepared by the method for manufacturing a mica tape that can be wound with any length and ultra-wide, including mica paper and a reinforcing material that is glued to the mica paper. Mica paper is any one of phlogopite paper, muscovite paper, synthetic mica paper, calcined phlogopite paper and calcined muscovite paper; the reinforcing material is glass fiber cloth, film and ceramicized silicone rubber coating. Any one; the width of the ultra-wide coiled mica tape is 20mm-70mm.

Compared with the prior art, the present invention has the beneficial effects of: a method for manufacturing an ultra-wide coiled mica tape of any length, meeting the requirement for customization of any length of the wide coiled mica tape, less difficulty in winding, and less wrinkle. , broken belt, etc.

The ultra-wide mica tape can be wound in any length, and the ultra-wide mica tape with a width of more than 20mm can be customized in any length.

Description of drawings

FIG. 1 is a schematic structural diagram of an ultra-wide winding mica tape of any length according to the present invention.

FIG. 2 is a schematic structural diagram of the ultra-wide wound mica tape in FIG. 1 of the present invention.

Among them, 1. Ultra-wide wound mica tape; 11. Mica paper; 12. Reinforcing material; 2. Mica tape band; 3. Ring core.

detailed description

The present invention will be further described below with reference to the specific embodiments. It should be noted that, on the premise of no conflict, the embodiments or technical features described below can be arbitrarily combined to form new embodiments.

(a) unwinding the mica paper and the reinforcing material respectively; the mica paper is any one of phlogopite paper, muscovite paper, synthetic mica paper, calcined phlogopite paper and calcined muscovite paper, and the mica paper is The quantitative amount is 70-250g/m ² ; the reinforcing material is any one of glass fiber cloth, film and ceramic silicon rubber coating;

(b) compounding the reinforcing material with mica paper after gluing, and controlling the amount of gluing through a metering rod to obtain a composite paper; the gluing method is any one of roller coating, slit, mesh and curtain coating, and the described The measuring rod is a Meyer rod or a wire rod;

(d) cutting mica tape blanks into mica tape reels of the required width;

(f) docking the mica tapes obtained in step (e);

The mica tape obtained by the manufacturing method of the mica tape satisfies the requirement of customization of any length of the wide-wound mica tape, has little difficulty in winding, and is less prone to problems such as tape wrinkling and tape breakage.

Further, in step (a), preferably alkali-free glass fiber cloth, uni/biaxially stretched PE/PET/PI/PTFE film or ceramized silicone rubber coating.

Further, it also includes a secondary slitting step, the secondary slitting step is specifically as follows: the mica tape reel obtained in step (d) is cut into several mica tapes of required widths through a precision slitting machine, After the material disperser is wound, the maximum winding width of the mica tape obtained by this winding can reach 70mm.

Further, the organic silica gel docking is specifically as follows: firstly, the butt joints of the mica tapes are cut neatly, the reinforcing material and the mica paper are wetted by 30-60 mm, the mica paper layer and the reinforcing material layer are separated, and the separated mica paper layer is removed. , and then apply organic silica gel on the reinforcing material. The viscosity of the organic silica gel 4# viscosity cup is detected in 13 seconds-30 seconds. After drying with a hot air gun, keep a flat glass fiber cloth with a width of 40-50mm and stick it neatly on another plate of mica. The glass fiber cloth surface of the belt is then coated with a layer of organic silica gel on the glass fiber cloth surface at the butt joint. The viscosity of the organic silica gel 4# viscosity cup is detected in 13 seconds to 30 seconds. Sticky treatment, gently pull the joint by hand without falling off, and there is no gap at the butt joint, the joint is qualified. Preferably, the mica paper is coated with a wet 40-50mm, and the viscosity of the organic silica gel 4# viscosity cup is measured within 15 seconds to 20 seconds.

Further, the butting of the gluing films is specifically as follows: firstly, the butt joints of the mica tapes are trimmed neatly, and the joints of the two mica tapes are butted through the adhesive film, and the length of the films is 30-60cm. , there is no gap at the butt joint, the joint is qualified. Preferably, the film length is 40-50 cm.

As shown in Figures 1-2, a mica tape 1 that can be wound with an ultra-wide width of any length is prepared by the method for manufacturing a mica tape that can be wound with an ultra-wide width of any length, including mica paper 11 and mica Paper-bonded reinforcing material 12, described mica paper 1 is any one in phlogopite paper, muscovite paper, synthetic mica paper, calcined phlogopite paper and calcined muscovite paper; described reinforcing material 2 is glass Any one of fiber cloth, film and ceramicized silicone rubber coating; the width of the ultra-wide winding mica tape 1 is 20mm-70mm; the ultra-wide winding mica tape 1 is wound around the ring core 3 to form mica The length of the belt group 2 and the ultra-wide wound mica belt 1 can be customized arbitrarily.

Example 1,

A method for manufacturing a 30mm wide winding single-sided glass fiber reinforced gold and ultra-wide winding mica tape of any length, comprising the following steps:

(a) Unwind the mica paper and the reinforcing material respectively; the mica paper is phlogopite mica paper, the mica paper has a basis weight of 70 g/m ² , and the reinforcing material is glass fiber cloth.

(b) compounding the reinforcing material with mica paper after gluing, and controlling the amount of glue through a measuring rod to obtain a composite paper; the gluing method is roller coating, and the measuring rod is a Meyer rod;

(d) Slitting the 1000mm wide 1000mm wide mica tape blank and parent roll into three 330mm wide mica tape reels;

(e) After the mica tape reel with a width of 330 mm obtained in step (d) is processed by an automatic deviation correction device and a constant tension control device, it is cut into 11 mica tape strips of 30 mm by a precision slitter, and the strips are dispersed by the strip. After the device, it is divided into 3 groups, and enters the four-row coiling device through the guide wheel. Among them, the first and second layers of coiling devices are 4 coils/group, and the third layer coiling device is 3 coils. Through the constant tension control device and winding correction After the installation, it is wound into a mica tape group;

(f) docking the mica tape and reel obtained in step (d), after the 1000-meter mica tape small mother roll is cut close to the bottom, and the next 1000-meter mica tape small mother roll is docked by brushing to achieve According to the production requirements of any length, the processing operation of the butt joint of mica tape and reel adopts organic silica gel docking. After the paper layer is separated from the reinforcing material layer, remove the separated mica paper layer, and then coat the reinforcing material with organic silica gel. The viscosity of the organic silica gel 4# viscosity cup is measured within 15 seconds to 20 seconds. After drying with a hot air gun, keep it. A flat glass fiber cloth with a width of 40-50mm is neatly attached to the glass fiber cloth surface of another mica tape, and then a layer of silicone is applied to the glass fiber cloth surface at the butt joint. The viscosity of the silicone 4# viscosity cup is detected within 15 seconds- After 20 seconds, after drying with a hot air gun, cut neatly, and do anti-sticking treatment, gently pull the joint by hand if it does not fall off, and there is no gap at the butt joint, the joint is qualified.

The follow-up process is the same as steps (e)-(f), and the diameter of the tape roll is checked. After reaching the required diameter, a 30mm wide coiled mica tape with the required length is obtained.

In step (e) winding, the tension controller is used flexibly according to the tightness of the blank tape on the unwinding shaft, and it is found that the disc surface is slightly bent, indicating that the tension is too large, and the tension must be reduced immediately and the speed is slowed down.

A 30mm wide winding single-sided glass fiber reinforced gold obtained by the manufacturing method of the mica tape can be wound with an ultra-wide mica tape of any length, and can meet the needs of customization of any length of the wide winding mica tape, and the winding difficulty is small and difficult. There are problems such as wrinkle and broken belt.

Example 2,

A method for manufacturing a 70mm wide and ultra-wide winding mica tape of any length, comprising the following steps:

(a) Unwind the mica paper and the reinforcing material respectively; the mica paper is a synthetic mica paper, the mica paper has a basis weight of 250 g/m ² , and the reinforcing material is a glass fiber cloth.

(d) slitting the 1000mm wide mica tape blank and parent roll into 14 mica tape reels with a width of 70mm;

(e) After passing the 70mm wide mica tape reel through the automatic constant tension system, it is positioned by the positioning wheel, and under the action of the deflection wheel, the mica tape is rolled into the mica tape by the translation of the winding shaft at the winding end;

(f) docking the mica tape and reel obtained in step (d), after the 1000-meter mica tape small mother roll is cut close to the bottom, and the next 1000-meter mica tape small mother roll is docked by brushing to achieve According to the production requirements of any length, the processing operation of the butt joint of the mica tape and the reel adopts the butting operation of the glue film. The length of the film is 40-50cm. After cutting neatly, the joint is qualified by gently pulling the joint by hand and there is no gap at the butt joint.

During winding, the tension controller is used flexibly according to the tightness of the blank on the unwinding shaft. It is found that the disc surface is slightly bent, indicating that the tension is too large, and the tension must be reduced immediately and the speed should be slowed down.

The manufacturing method of the mica tape obtains a 70mm wide and ultra-wide coiled mica tape of any length, which meets the needs of customization of any length of the wide coiled mica tape. .

The above-mentioned embodiments are only preferred embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention. Any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention belong to the scope of the present invention. Scope of protection claimed.

Claims

A method for manufacturing an ultra-wide coiled mica tape of any length, comprising the following steps:

(a) Unwind the mica paper and the reinforcing material separately;

(b) compounding the reinforcing material with mica paper after gluing, and controlling the amount of glue through a metering rod to obtain a compound paper;

(c) the composite paper is successively subjected to drying, curing and winding treatment to obtain a mica tape blank;

(d) cutting mica tape blanks into mica tape reels of the required width;

(e) after the mica tape reel obtained in the step (d) is processed by the automatic deviation rectification device, the constant tension control device and the winding rectification device, the mica tape reel is wound into the mica tape by the coiling device;

(f) docking the mica tapes obtained in step (e);

(g) Steps (e)-(f) are repeated to achieve production requirements of any length.
A kind of manufacture method of ultra-wide winding mica tape of arbitrary length as claimed in claim 1, it is characterized in that: in step (a), described mica paper is phlogopite mica paper, muscovite paper, synthetic mica paper, calcined mica paper Any of phlogopite paper and calcined muscovite paper.
The method for manufacturing an ultra-wide winding mica tape of any length as claimed in claim 1, wherein in step (a), the reinforcing material is glass fiber cloth, a film and a ceramicized silicone rubber coating any of the .
A kind of manufacture method of ultra-wide winding mica tape with arbitrary length as claimed in claim 1, it is characterized in that: in step (b), the gluing method is any one in roller coating, slit, mesh and shower coating The measuring rod is a Meyer rod or a wire rod.
The method for manufacturing an ultra-wide winding mica tape of any length according to claim 1, further comprising a secondary slitting step, the secondary slitting step is specifically: obtaining step (d) to obtain The mica tape reel is cut into several mica tapes of the required width by a precision slitter, and is wound after passing through a tape disperser.
The method for manufacturing a mica tape that can be wound with arbitrary length and ultra-wide width as claimed in claim 1, wherein in step (e), the automatic deviation correction device is a reflection type deviation correction control system, a positioning wheel, and a deviation adjustment wheel. One or more of the combination, the automatic correction method adopts the front, middle and rear multi-channel combined correction;

The reeling device adopts the rewinding end reeling arm translation method for rewinding or the reeling end reeling shaft translation method for reeling.
A kind of manufacture method of ultra-wide winding mica tape of arbitrary length as claimed in claim 1, it is characterized in that: in step (f), the processing operation of mica tape and reel butt joint adopts organic silica gel docking, gluing film docking A sort of.
The method for manufacturing a mica tape that can be wound with an arbitrary length and an ultra-wide width as claimed in claim 1, wherein the organic silica gel docking is specifically: first trimming the butting part of the mica tape neatly, coating the reinforcing material and mica paper Wet 30-60mm, separate the mica paper layer from the reinforcing material layer, remove the separated mica paper layer, then coat the reinforcing material with silicone, dry it with a hot air gun, cut it neatly, and do anti-sticking treatment, If the joint does not fall off by lightly pulling it by hand, and there is no gap at the butt joint, the joint is qualified.
The method for manufacturing a mica tape that can be wound with an arbitrary length and an ultra-wide width as claimed in claim 1, wherein the butt joint of the gluing film is: firstly, the mica tape butt joint is cut neatly, and the two The mica tape joints are butted together. The length of the film is 30-60cm. After the cutting is neat, the joints are qualified by gently pulling the joints by hand, and there is no gap at the joints.
A kind of ultra-wide winding mica tape of arbitrary length, obtained by a method for manufacturing an ultra-wide winding mica tape of any length as claimed in claim 1, characterized in that: comprising mica paper and glue with mica paper Sticky reinforcing material, the mica paper is any one of phlogopite paper, muscovite paper, synthetic mica paper, calcined phlogopite paper and calcined muscovite paper; the reinforcing material is glass fiber cloth, film and Any of the ceramic silicone rubber coatings; the width of the ultra-wide coiled mica tape is 20mm-70mm.