CN113907416A - Preparation facilities of multiaxis multicore filter rod - Google Patents
Preparation facilities of multiaxis multicore filter rod Download PDFInfo
- Publication number
- CN113907416A CN113907416A CN202111338186.8A CN202111338186A CN113907416A CN 113907416 A CN113907416 A CN 113907416A CN 202111338186 A CN202111338186 A CN 202111338186A CN 113907416 A CN113907416 A CN 113907416A
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- Prior art keywords
- forming
- core
- inner core
- embossing
- sleeve
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- 238000002360 preparation method Methods 0.000 title claims abstract description 6
- 238000004049 embossing Methods 0.000 claims abstract description 48
- 238000001816 cooling Methods 0.000 claims abstract description 28
- 238000004513 sizing Methods 0.000 claims abstract description 21
- 239000000835 fiber Substances 0.000 claims abstract description 15
- 239000000112 cooling gas Substances 0.000 claims abstract description 7
- 238000004026 adhesive bonding Methods 0.000 claims description 13
- 235000019504 cigarettes Nutrition 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims 1
- 210000002105 tongue Anatomy 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000007493 shaping process Methods 0.000 description 4
- 239000000178 monomer Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 208000034530 PLAA-associated neurodevelopmental disease Diseases 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 235000019505 tobacco product Nutrition 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/02—Manufacture of tobacco smoke filters
- A24D3/0229—Filter rod forming processes
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/02—Manufacture of tobacco smoke filters
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/04—Tobacco smoke filters characterised by their shape or structure
Landscapes
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
Abstract
The invention discloses a preparation device of a multi-axis multi-core filter rod, which comprises an opening area, a filter rod forming area and an inner core forming area, wherein the inner core forming area is arranged between the opening area and the filter rod forming area; the inner core forming area comprises a filament catcher and a single embedded multi-core forming device, the single embedded multi-core forming device comprises a plurality of filament bundle channels which are transversely arranged, the silk catcher is arranged at the front side of the inlet of the silk bundle channel, the front end, the middle end and the tail end of the silk bundle channel are respectively provided with a pre-forming sleeve, an embossing forming roller pair and a sizing cooling sleeve, the single embedded multi-core forming device further comprises a first high-temperature steam pipe, a second high-temperature steam pipe and a cold air channel which are vertically arranged, wherein the first high-temperature steam pipe, the second high-temperature steam pipe and the cold air channel are respectively used for feeding first high-temperature steam, second high-temperature steam and cooling gas to the pre-forming sleeve, the embossing forming roller pair and the sizing cooling sleeve, fiber tows coming out of the filament catcher are fed into the tow channel to be pre-formed into inner core filter strips through the pre-forming sleeve, then the inner core filter strips are extruded through the embossing forming roller pair, and finally the stable inner core filter strips are formed through rapid cooling and sizing of the sizing cooling sleeve.
Description
Technical Field
The invention mainly relates to the technical field of tobacco products, in particular to a device for preparing a multi-shaft multi-core filter rod.
Background
The multi-axis multi-core filter stick has larger specific surface area and novelty. The traditional hollow filter stick and the coaxial filter stick have more application paradigms and do not have good cooling performance and novelty. Some filter sticks with complex patterns and large specific surface area in the market are generally made of silica gel, PLA and other materials, usually non-fiber materials, in the forms of injection molding, extrusion and the like.
The traditional coaxial core filter stick forming equipment can only realize a filter stick with an inner core structure and an outer core structure, and cannot realize the hollow effect of multiple shafts and multiple cores. The traditional hollow filter stick forming equipment only has the forming capability of one filter stick, the hollow forming section device is large, if a plurality of devices are stacked, the filter stick can be bent and deformed after being gathered, and stable forming cannot be realized.
Disclosure of Invention
In order to solve the problems, the invention provides a device for preparing a multi-axis multi-core filter rod, which breaks through the forming thought of the existing hollow filter rod and coaxial filter rod and can be used for producing stable and reliable multi-axis multi-core filter rods.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a device for preparing a multi-axis multi-core filter rod comprises an opening area, a filter rod forming area and an inner core forming area, wherein the inner core forming area is arranged between the opening area and the filter rod forming area; the inner core forming area comprises a filament catcher and a single embedded multi-core forming device, the single embedded multi-core forming device comprises a plurality of filament bundle channels which are transversely arranged, the silk catcher is arranged at the front side of the inlet of the silk bundle channel, the front end, the middle end and the tail end of the silk bundle channel are respectively provided with a pre-forming sleeve, an embossing forming roller pair and a sizing cooling sleeve, the single embedded multi-core forming device further comprises a first high-temperature steam pipe, a second high-temperature steam pipe and a cold air channel which are vertically arranged, wherein the first high-temperature steam pipe, the second high-temperature steam pipe and the cold air channel are respectively used for feeding first high-temperature steam, second high-temperature steam and cooling gas to the pre-forming sleeve, the embossing forming roller pair and the sizing cooling sleeve, fiber tows coming out of the filament catcher are fed into the tow channel to be pre-formed into inner core filter strips through the pre-forming sleeve, then the inner core filter strips are extruded through the embossing forming roller pair, and finally the stable inner core filter strips are formed through rapid cooling and sizing of the sizing cooling sleeve.
Further, the embossing forming roller pair comprises an upper embossing roller and a lower embossing roller which can be used in a matched mode; go up the embossing roll and all be equipped with the flute that can cooperate on the embossing roll down, the shape of flute and the appearance looks adaptation of inner core.
Furthermore, the inner core forming area also comprises a core rod, one end of the core rod is connected with the wire catcher, the other end of the core rod penetrates through the wire bundle channel and extends to the position between the upper embossing roller and the lower embossing roller, and the shape of the core rod is matched with the shape of the hollow core in the inner core.
Further, the inner core forming area further comprises a gluing device and an inner core collecting cigarette tongue, the gluing device is arranged at the outlet end of the tow channel, and the inner core collecting cigarette tongue is arranged on the rear side of the gluing device.
Furthermore, the single embedded multi-core forming device further comprises a negative pressure gas pipe which is vertically arranged, and a negative pressure port is arranged between the embossing forming roller pair and the sizing cooling jacket in the tow channel and connected with the negative pressure gas pipe.
Further, the temperature of the first positive pressure steam is 120-; the temperature of the second positive pressure steam is 160-260 ℃, and the pressure is 0.05-0.15 MPa; the pressure of the cooling gas is 0.10-0.20 MPa.
Furthermore, the monomer embedded multi-core molding device further comprises a shell which is of a split structure, the length is 700mm, the width is 200-mm and the height is 350 mm.
The invention has the beneficial effects that:
the invention provides a preparation device of a multi-axis multi-core filter rod, which breaks through the forming thought of the existing hollow filter rod and coaxial filter rod, is additionally provided with a single embedded multi-core forming device on the traditional forming equipment, can stably and reliably produce multi-axis multi-core filter rods with different production places according to requirements, realizes the complex section shape and the larger specific surface area of the inner core of the filter rod, and has the advantages of simple and convenient production structure, low production cost and stable and reliable product quality.
Drawings
Fig. 1 is a cross-sectional view of a multi-axial multi-core filter rod;
figure 2 is a cross-sectional view of an alternative multi-axial multi-core filter rod;
fig. 3 is a schematic flow line diagram of the device for preparing a multi-axial multi-core filter rod according to the invention;
FIG. 4 is a schematic structural view of the core forming section of the present invention;
FIG. 5 is a cross-sectional view of the single-piece embedded multi-core forming device of the present invention (the core rod is shown in cross-section to better illustrate the positional relationship of the core rod, the actual core rod should be within the tow channel);
FIG. 6 is a schematic view of the configuration of an embossing forming roller pair of the present invention;
wherein: 1. filtering the filter stick; 1-1, the outer layer of the filter stick; 1-2, inner core; 1-3, hollow core; 2. stacking fiber tows; 3. an opening area; 3-1, a first air opener; 3-2, a second air opener; 3-3, pre-tension roller; 3-4, a first opening roller; 3-5, a second opening roller; 3-6, a third air opener; 3-7, an output roller; 4. an inner core molding zone; 4-1, a silk catcher; 4-2, a single embedded multi-core forming device; 4-2-1 shell; 4-2-2, a tow channel; 4-2-3, pre-shaping a sleeve block; 4-2-4, embossing forming roller pairs; 4-2-4-1, and an embossing roller; 4-2-4-2, lower embossing roll; 4-2-5, forming a cooling jacket; 4-2-6, a first high temperature steam pipe; 4-2-7, cold air tube bar; 4-3, a gluing device; 4-4, collecting the cigarette tongue by the inner core; 4-5, core rod; 5. a filter rod forming area.
Detailed Description
The structure and the movement mode of the invention are further explained in the following with the attached drawings.
As shown in fig. 1-2, the multi-axis multi-core filter stick 1 comprises a filter stick outer layer 1-1 made of wrap paper, a plurality of inner cores 1-2 made of tows can be arranged in the filter stick outer layer 1-1 as required, the inner cores 1-2 can be solid or comprise hollow cores 1-3, and the inner cores 1-2 and the hollow cores 1-3 can be made into shapes with different cross sections, such as round, square, pentagram or other irregular shapes as required.
Generally, inner core filter rods are made of fiber tows, a plurality of inner core filter rods are gathered and wrapped by forming paper to form filter rods, and the filter rods are cut to finally form the filter rod 1.
As shown in fig. 3-6, the device for preparing the multi-axis multi-core filter stick sequentially comprises an opening area 3, an inner core forming area 4 and a filter stick forming area 5 for a production line for producing the multi-axis multi-core filter stick 1;
The inner core forming area 4 is used for manufacturing inner core filter rods, is arranged on a connecting support on a filter rod forming machine of the filter rod forming area 5, and comprises a silk catcher 4-1, a single embedded multi-core forming device 4-2, a gluing device 4-3, an inner core collecting cigarette tongue 4-4 and a core rod 4-5; the central height of the single embedded multi-core forming device 4-2 and the central height of a forming smoke gun on the filter stick forming machine are on the same horizontal line. The device comprises a single embedded multi-core forming device 4-2, a single embedded multi-core forming device 4-3, a silk catching device 4-1, a gluing device 4-3 and a glue spreading device 4-3, wherein the silk catching device 4-1 and the gluing device 4-3 are respectively arranged at an inlet and an outlet of the single embedded multi-core forming device 4-2, the silk catching device 4-1 is used for collecting fiber tows gathered and output from an opening area, the gluing device 4-3 is used for coating latex on cooled and shaped inner core filter strips from the single embedded multi-core forming device 4-2 for fixing again, inner core collecting cigarette tongues 4-4 are arranged on the rear side of the gluing device 4-3, a plurality of inner core filter strips are collected so as to be sent into a filter rod forming area 5 to manufacture filter strips, and finally the filter rods are cut into filter rods 1.
The core rod 4-5 is a cylinder made of hard material, one end of the cylinder is connected with the wire catcher 4-1, the other end of the cylinder extends into the monomer embedded multi-core forming device 4-2 and is used for preparing the hollow core 3 of the core 2, the core rod 4-5 can be installed when the core 2 containing the hollow core 3 is prepared according to the requirement, and the solid core 2 can be prepared by detaching the core rod 4-5.
The single embedded multi-core forming device 4-2 comprises a shell 4-2-1, wherein the shell 4-2-1 is a cuboid which is transversely arranged, and has the following dimensions: the length is preferably 500-700mm, the width is preferably 100-200-mm, the height is preferably 280-350mm, and the shell 4-2-1 is a split structure and can be opened for facilitating the maintenance or replacement of parts therein.
A plurality of tow channels 4-2-2 are transversely arranged in the shell 4-2-1, and the number of the tow channels 4-2-2 can be adjusted according to the number of the hollow cores 2 in the filter stick; the front end, the middle end and the tail end of the tow channel 4-2-2 are respectively provided with a pre-forming sleeve 4-2-3, an embossing forming roller pair 4-2-4 and a sizing cooling sleeve 4-2-5 which are all embedded and are convenient to replace; if the core rod 4 is installed, the core rod 4 extends from the wire catcher 4-1 to the embossing forming roller pair 4-2-4, the shape of the core rod 4-5 is matched with the designed shape of the hollow core 1-3 of the core 1-2, and the size of the core rod 4-5 is 0.05mm larger than that of the hollow core 1-3.
A first high-temperature steam pipe 4-2-6, a second high-temperature steam pipe (not shown in the figure), a negative pressure gas pipe (not shown in the figure) and a cold air channel 4-2-7 are also vertically arranged in the shell 4-2-1; the first high-temperature steam pipe is arranged at the position of the preformed sleeve 4-2-3 and is used for inputting first positive-pressure steam into each preformed sleeve 4-2-3; the second high-temperature steam pipe is arranged on the front side of the embossing forming roller pair 4-2-4 and used for inputting second high-temperature steam into the tow channel 4-2-2 from the front side of the embossing forming roller pair 4-2-4 and working with the embossing forming roller pair 4-2-4 in a matched mode; the tow channel 4-2-2 is provided with a negative pressure port between the embossing forming roller pair 4-2-4 and the sizing cooling jacket 4-2-5, is connected with a negative pressure gas pipe, and is used for absorbing the advancing steam of the tow channel 4-2-2 along the inner core 1-2, and avoiding mixing with the following cooling gas to influence the cooling effect; the cold air channel 4-2-7 is arranged at the position of the sizing cooling jacket 4-2-5 and is used for inputting cooling air to the sizing cooling jacket 4-2-5.
The section of the inner hole of the preformed sleeve 4-2-3 is circular, the circumferential size of the preformed sleeve is 0.1mm larger than the design size of the inner core 1-2, and the inner core can be replaced; the first high temperature steam pipe 4-2-6 inputs first positive pressure steam to the preforming sleeve 4-2-3 to heat the fiber tows, and the fiber tows from the fiber catcher are preformed into the inner core filter rods through the preforming sleeve 4-2-3, wherein the temperature range of the first positive pressure steam is preferably 120 ℃ and 190 ℃, and the pressure range is preferably 0.05-0.15 MPa.
The embossing forming roller pair 4-2-4 comprises an upper embossing roller 4-2-4-1 and a lower embossing roller 4-2-4-2 which can be used in a matched mode; the upper embossing roller 4-2-4-1 and the lower embossing roller 4-2-4-2 are respectively provided with grooves which can be matched with each other, the shape of the grooves is matched with the shape of the inner core, the circumferential size of the cross section is 0.05mm smaller than the design size of the inner core 1-2, and the grooves can be replaced according to the requirement of the inner core; the second high-temperature steam pipe inputs second positive pressure steam to the front side of the embossing forming roller pair 4-2-4, the preformed inner core filter strip is heated by the steam before entering the embossing forming roller pair 4-2-4 for embossing, the shape of the inner core 1-2 is conveniently extruded by the embossing forming roller pair 4-2-4, the temperature range of the second positive pressure steam is preferably 160-260 ℃, and the pressure range is preferably 0.05-0.15 MPa; the embossing forming roller pair 4-2-4; the embossing forming roller pair 4-2-4 is connected with a servo motor, the linear speed of a roller is the same as the linear speed of a main machine of the multi-axis multi-core filter stick preparation device, generally 50m/min, and can be adjusted according to the tensioning of the filter sticks. The embossing can be designed in an intermittent manner as desired.
The cross section of the inner hole of the sizing cooling jacket 4-2-5 is circular, the circumference size of the sizing cooling jacket is 0.05mm smaller than the design size of the inner core 1-2, and the sizing cooling jacket can be replaced according to the design requirement. The cold air channel 4-2-7 inputs cooling gas into the shaping cooling jacket 4-2-5, the pressure range is preferably 0.10-0.20MPa, so that the inner core 1-2 is rapidly cooled and shaped in the shaping cooling jacket 4-2-5.
Before the fiber tow band enters the inner core forming area 4, a first high temperature steam pipe 4-2-6, a second high temperature steam pipe (not shown in the figure), a negative pressure gas pipe and a cold air channel 4-2-7 are opened.
Multiple fiber tows respectively enter a filament catcher 4-1 after passing through an opening area 3, then respectively enter a tow channel 4-2-2 of a monomer embedded multi-core forming device 4-2, an inner core filter strip is preliminarily formed through a preforming sleeve 4-2-3, then respectively are drawn and extruded into the design shape of an inner core 1-2 through an embossing forming roller pair 4-2-4, the formed inner core filter strip is rapidly cooled and formed through a forming cooling sleeve 4-2-5 to form the inner core filter strip with stable quality, latex is coated through a gluing device 4-3, and finally enters a filter stick forming area 5 through a cigarette tongue collecting device 4-4.
The filter rod forming zone 5 is a filter rod forming machine with a forming cigarette gun, a forming paper supply system and a cutting device. The inner core filter strip is sent to a forming cigarette gun through a cigarette tongue collecting device 4-4, the filter strip with stable quality is formed after being wrapped by forming paper, the filter strip is pulled forward by a cloth belt, and finally the filter strip is sent to a cutting device to be cut into filter sticks 1 with stable quality.
Finally, it should be noted that: although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. A preparation device of a multi-axis multi-core filter stick comprises an opening area (3) and a filter stick forming area (5), and is characterized by further comprising an inner core forming area (4) arranged between the opening area (3) and the filter stick forming area (5); the inner core forming area (4) comprises a filament catcher (4-1) and a single embedded multi-core forming device (4-2), the single embedded multi-core forming device (4-2) comprises a plurality of filament bundle channels (4-2-2) which are transversely arranged, the filament catcher (4-1) is arranged on the front side of an inlet of each filament bundle channel (4-2-2), a pre-forming sleeve (4-2-3), an embossing forming roller pair (4-2-4) and a sizing cooling sleeve (4-2-5) are respectively arranged at the front end, the middle end and the tail end of each filament bundle channel (4-2-2), and the single embedded multi-core forming device (4-2) further comprises a first high-temperature steam pipe (4-2-6), a second high-temperature steam pipe, a third high-temperature steam pipe, a fourth high-2, a fourth high-3, a fourth high-2, a fourth high-3, a fourth high-2, a fourth high-3, a fourth, a fifth, a sixth, a fourth, a fifth, a sixth, and the cold air channel (4-2-7) is used for respectively feeding first high-temperature steam, second high-temperature steam and cooling gas into the pre-forming sleeve (4-2-3), the embossing forming roller pair (4-2-4) and the sizing cooling sleeve (4-2-5), feeding fiber tows from the filament catcher (4-1) into the tow channel (4-2-2) to be preformed into inner core filter strips through the pre-forming sleeve (4-2-3), pressing the inner core shape through the embossing forming roller pair (4-2-4), and finally rapidly cooling and sizing through the sizing cooling sleeve (4-2-5) to form the stable inner core filter strips.
2. The device for preparing a multi-axial multi-core filter rod according to claim 1, wherein the pair of embossing forming rollers (4-2-4) comprises an upper embossing roller (4-2-4-1) and a lower embossing roller (4-2-4-2) which can be used in cooperation; the upper embossing roller (4-2-4-1) and the lower embossing roller (4-2-4-2) are respectively provided with grooves which can be matched, and the shape of the grooves is matched with the shape of the inner core.
3. The device for preparing the multi-axial multi-core filter rod according to claim 2, wherein the inner core forming zone (4) further comprises a core rod (4-5), one end of the core rod (4-5) is connected with the wire catcher (4-1), the other end of the core rod passes through the tow channel (4-2-2) and extends to the position between the upper embossing roller (4-2-4-1) and the lower embossing roller (4-2-4-2), and the shape of the core rod (4-5) is matched with the shape of the hollow core in the inner core.
4. The device for preparing a multi-axial multi-core filter rod according to claim 1, wherein the inner core forming zone (4) further comprises a gluing device (4-3) and an inner core collecting cigarette tongue (4-4), the gluing device (4-3) is arranged at the outlet end of the tow channel (4-2-2), and the inner core collecting cigarette tongue (4-4) is arranged at the rear side of the gluing device (4-3).
5. The device for preparing the multi-axial multi-core filter stick according to claim 1, wherein the single embedded multi-core forming device (4-2) further comprises a vertically arranged negative pressure gas pipe, and the tow channel (4-2-2) is provided with a negative pressure port between the embossing forming roller pair (4-2-4) and the sizing cooling jacket (4-2-5) and connected with the negative pressure gas pipe.
6. The device for preparing the multi-axis multi-core filter rod according to claim 1, wherein the temperature of the first positive pressure steam is 120-190 ℃, and the pressure is 0.05-0.15 MPa; the temperature of the second positive pressure steam is 160-260 ℃, and the pressure is 0.05-0.15 MPa; the pressure of the cooling gas is 0.10-0.20 MPa.
7. The device for preparing the multi-axis multi-core filter rod as claimed in claim 1, wherein the single embedded multi-core forming device (4-2) further comprises a shell (4-2-1) which is a split structure and has a length of 500-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111338186.8A CN113907416A (en) | 2021-11-11 | 2021-11-11 | Preparation facilities of multiaxis multicore filter rod |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111338186.8A CN113907416A (en) | 2021-11-11 | 2021-11-11 | Preparation facilities of multiaxis multicore filter rod |
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| CN113907416A true CN113907416A (en) | 2022-01-11 |
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| CN202111338186.8A Pending CN113907416A (en) | 2021-11-11 | 2021-11-11 | Preparation facilities of multiaxis multicore filter rod |
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