CN112553956A - Multi-layer paper product drying device and method thereof - Google Patents
Multi-layer paper product drying device and method thereof Download PDFInfo
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- CN112553956A CN112553956A CN202011460675.6A CN202011460675A CN112553956A CN 112553956 A CN112553956 A CN 112553956A CN 202011460675 A CN202011460675 A CN 202011460675A CN 112553956 A CN112553956 A CN 112553956A
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- roller
- paper product
- support frame
- drying
- pressing
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/04—Physical treatment, e.g. heating, irradiating
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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
- B32B29/00—Layered products comprising a layer of paper or cardboard
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/30—Multi-ply
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- Drying Of Solid Materials (AREA)
Abstract
The invention provides a multi-layer paper product drying device and a method thereof, the device comprises a base, the upper surface of the base is fixedly connected with a drying box, a first support frame, a second support frame, a third support frame and a support tube from left to right, a plurality of partition plates are fixedly connected inside the drying box, a plurality of groups of ironing rollers are arranged inside the first support frame, each group of ironing rollers comprises a driving ironing roller and a driven ironing roller, a merging roller group is arranged inside the second support frame, a first pressing roller and a second pressing roller are arranged inside the third support frame, and a drying nozzle is connected to the top end of the support tube. Shortened production process.
Description
Technical Field
The invention relates to the technical field of paper product production, in particular to a multi-layer paper product drying device and a method thereof.
Background
Paper, sheet made of plant fiber, used for writing and painting, printing books and newspapers, packaging and the like. Existing multi-ply paper products, such as: the toilet paper needs to be dried in the production process, the multi-layer paper product is generally dried through a single layer, then the multi-roll dried paper product is transferred to the next device to be superposed and pressed to form the multi-layer paper product.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a multi-layer paper product drying device and a method thereof, and solves the problems that the existing multi-layer paper product drying device is inconvenient in processing method and low in single-layer drying efficiency, and the multi-layer paper product drying device needs to be switched to the next flow to be overlapped into the multi-layer paper product after being dried, so that the operation flows are more, and the operation process is more complicated.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a drying device for a multi-layer paper product comprises a base, wherein a drying box, a first support frame, a second support frame, a third support frame and a support tube are fixedly connected to the upper surface of the base from left to right in sequence, a plurality of partition plates are fixedly connected to the inside of the drying box, a plurality of groups of ironing and pressing rollers are arranged inside the first support frame, each group of ironing and pressing rollers comprises a driving ironing and pressing roller and a driven ironing and pressing roller, a merging roller group is arranged inside the second support frame, a first pressing roller and a second pressing roller are arranged inside the third support frame, and a drying spray head is connected to the top end of the support tube;
the drying box is characterized in that two symmetrical sides of the drying box are arranged in an opening manner, communicated cavities are formed in the top wall, the bottom wall and the partition plate of the drying box, a plurality of air outlet holes are formed in the top wall, the bottom wall and the upper surface and the lower surface of the partition plate of the drying box, an air heater is fixedly connected to one side of the outer wall of the drying box, and an air outlet end of the air heater is connected with an air outlet pipe;
the inside of initiatively scalding the compression roller and scalding the compression roller with driven all is provided with the heater strip, the pressfitting decorative pattern circle has all been cup jointed to the both ends surface of first pressfitting roller and second pressfitting roller, the last fixed surface of third support frame is connected with stores up the gluey case, the pressfitting decorative pattern circle upper surface at second pressfitting roller both ends all is provided with rubber coating mechanism, outer wall one side of first support frame, second support frame and third support frame all is provided with actuating mechanism.
Preferably, the air outlet holes are all communicated with the communicating cavity; a plurality of the section of exhaust vent all is the horn type setting, the lateral wall of tuber pipe passes through connecting pipe and intercommunication chamber intercommunication.
Preferably, the gluing mechanism comprises a glue storage box, a sponge wiper and a siphon, the top of the sponge wiper is fixedly connected with the bottom of the glue storage box, the bottom of the sponge wiper is in contact with the press-fit pattern ring, the lower surface of the glue storage box is provided with a plurality of liquid outlet holes, the siphon is communicated with the top of the glue storage box, one end, far away from the glue storage box, of the siphon is communicated with the bottom of the glue storage box, and a visible window is arranged on the surface of the glue storage box.
Preferably, actuating mechanism includes drive case, motor, dwang, driving gear and driven gear, the inside wall fixed connection of motor and drive case, and the inside wall of dwang and drive case rotates and is connected, the fixed drive end surface of cup jointing in the motor of driving gear, driven gear is located the surface of dwang, the driving gear is connected with the driven gear meshing.
Preferably, the side wall of the supporting tube is connected with a vent pipe, and one end of the vent pipe, which is far away from the supporting tube, is communicated with the air outlet end of the air heater.
Preferably, paper products are arranged among the partition plates, penetrate through the ironing press roller group, the combination roller group, the first pressing roller and the second pressing roller group and extend to the position below the drying spray head.
A method of using a multi-ply paper product drying appliance in accordance with any one of claims 1-6, comprising the steps of:
a: placing a plurality of wet paper rolls on an automatic paper roll collecting and releasing frame, enabling single-layer paper products to pass through a plurality of partition plates and a plurality of ironing press roller sets respectively, then pass through a combination roller set, a first press roller and a second press roller, pass through the lower part of a drying spray head, and be fixed with an automatic paper roll collecting barrel at the other end of the device;
b, simultaneously starting a plurality of driving mechanisms to enable the motor to rotate and drive the driving gear to rotate, and enabling the driving gear to rotate and drive the driven gear to rotate, so that the pressing roller group, the combining roller group, the first pressing roller and the second pressing roller rotate to convey and dry the paper products;
c: starting the air heater, wherein the air heater is sprayed out through the plurality of air outlet holes to dry the single-layer paper product passing through the communicating cavity, and then the single-layer paper product is pressed and ironed by flattening between the driving ironing roller and the driven ironing roller and moisture is removed during heating;
d: after pressing and ironing, the single-layer paper product is combined into a multi-layer paper product through the combination roller set, the multi-layer paper product is pressed through the pressing pattern rings on the surfaces of the first pressing roller and the second pressing roller, glue in the glue storage box is far away from the soaking sponge wiper through siphon, and a small amount of glue on the surface of the pressing pattern ring is adhered during rotation, so that the multi-layer paper product is connected more tightly during pressing;
e: the laminated multi-layer paper product is dried by a drying spray head with a small amount of glue on the surface and is wound on an automatic paper collecting cylinder, so that the multi-layer paper product can be dried.
The working principle is as follows: when the device is used, a plurality of moist paper rolls are placed on an automatic paper roll collecting and releasing frame, single-layer paper products pass through a plurality of partition plates and a plurality of ironing press roll groups respectively, then pass through the combining roll group, a first pressing roll and a second pressing roll and pass through the lower part of a drying spray head to be fixed with an automatic paper roll collecting barrel at the other end of the device, a plurality of driving mechanisms are started simultaneously, a motor rotates to drive a driving gear to rotate, the driving gear rotates to drive a driven gear to rotate, so that the ironing roll group, the combining roll group, the first pressing roll and the second pressing roll rotate to convey and dry the paper products, a hot air fan is started, the hot air fan passes through a communicating cavity and is sprayed out through a plurality of air outlet holes to dry the single-layer paper products passing through, then the single-layer paper products are pressed and ironed through a driving ironing press roll and a driven ironing press roll and moisture is removed during heating, the single-layer paper products are, and carry out the pressfitting to multilayer paper products through the pressfitting decorative pattern circle on first pressfitting roller and second pressfitting roller surface, glue of storing up the incasement portion can keep away from through the siphon and soak the sponge and wipe, a small amount of glue in surface can be stained with to pressfitting decorative pattern circle when rotating, makes to connect inseparabler when the pressfitting multilayer paper products, and multilayer paper products that the pressfitting was accomplished dry and the rolling is received paper section of thick bamboo alright completion multilayer paper products's stoving to a small amount of glue in surface through drying spray head.
(III) advantageous effects
The invention provides a multi-layer paper product drying device and a method thereof. The method has the following beneficial effects:
through set up the multilayer baffle in the stoving incasement for the stoving case can dry multilayer paper products simultaneously, and cooperation merger roller subassembly, compression roller subassembly and rubberizing mechanism, can directly form multilayer paper products on drying device, and operation and flow are comparatively simple, need not convey the next flow once more after the stoving at a plurality of individual-layer paper products and form dry multilayer paper products, have improved drying efficiency, the production flow who shortens.
Drawings
FIG. 1 is a schematic view of the overall structure of a multi-ply paper product drying apparatus according to the present invention;
FIG. 2 is a side view of a third support frame of a multi-ply paper product drying apparatus of the present invention;
FIG. 3 is a side view of a drying oven of a multi-layer paper product drying apparatus of the present invention;
FIG. 4 is a schematic view of a glue application mechanism of a multi-ply paper product drying apparatus according to the present invention;
fig. 5 is a cross-sectional view of a drive housing of a multi-ply paper product drying apparatus provided by the present invention.
Wherein, the base; 2. a drying box; 3. a paper product; 4. a partition plate; 5. actively ironing a press roller; 6. a first support frame; 7. a driven ironing roller; 8. merging the roller sets; 9. a second support frame; 10. supporting a tube; 11. a breather pipe; 12. a third support frame; 13. a first press-fit roller; 14. a second press-fit roller; 15. drying the spray head; 16. pressing the pattern ring; 17. a gluing mechanism; 18. a glue storage box; 19. a glue storage box; 20. a liquid outlet hole; 21. sponge wiping; 22. a siphon tube; 23. a visible window; 24. a drive box; 25. a motor; 26. rotating the rod; 27. a driving gear; 28. a driven gear; 29. a hot air blower; 30. a communicating cavity; 31. an air outlet; 32. and an air outlet pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
as shown in fig. 1-5, an embodiment of the invention provides a drying device for a multi-layer paper product, which comprises a base 1, wherein a drying box 2, a first support frame 6, a second support frame 9, a third support frame 12 and a support tube 10 are fixedly connected to the upper surface of the base 1 from left to right in sequence, a plurality of partition plates 4 are fixedly connected to the inside of the drying box 2, a plurality of groups of ironing rollers are arranged inside the first support frame 6, each group of ironing rollers comprises a driving ironing roller 5 and a driven ironing roller 7, a merging roller group 8 is arranged inside the second support frame 9, a first pressing roller 13 and a second pressing roller 14 are arranged inside the third support frame 12, and the top end of the support tube 10 is connected with a drying nozzle 15; the symmetrical two sides of the drying box 2 are provided with openings, the top wall, the bottom wall of the drying box 2 and the inside of the partition plate 4 are provided with communicating cavities 30, the top wall, the bottom wall of the drying box 2 and the upper surface and the lower surface of the partition plate 4 are provided with a plurality of air outlet holes 31, one side of the outer wall of the drying box 2 is fixedly connected with an air heater 29, and the air outlet end of the air heater 29 is connected with an air outlet pipe 32; the driving hot pressing roller 5 and the driven hot pressing roller 7 are internally provided with heating wires, the outer surfaces of the two ends of the first pressing roller 13 and the second pressing roller 14 are fixedly sleeved with a pressing pattern ring 16, the upper surface of the third support frame 12 is fixedly connected with a glue storage box 18, the upper surfaces of the pressing pattern rings 16 at the two ends of the second pressing roller 14 are provided with glue coating mechanisms 17, and one side of the outer wall of each of the first support frame 6, the second support frame 9 and the third support frame 12 is provided with a driving mechanism.
The air outlet holes 31 are communicated with the communication cavity 30; the section of a plurality of exhaust vents 31 all is the horn type setting, and the lateral wall of tuber pipe 32 passes through connecting pipe and intercommunication chamber 30 intercommunication, and the exhaust vent 31 of horn type can make the hot-blast more gentle that blows off with hot-blast dispersion, avoids exerting oneself too big messenger paper products damaged.
Actuating mechanism includes drive box 24, motor 25, dwang 26, driving gear 27 and driven gear 28, the inside wall fixed connection of motor 25 and drive box 24, and the inside wall of dwang 26 and drive box 24 rotates and is connected, the fixed drive end surface of cup jointing in motor 25 of driving gear 27, driven gear 28 is located the surface of dwang 26, driving gear 27 is connected with the meshing of driven gear 28, be convenient for drive each subassembly.
The side wall of the supporting tube 10 is connected with a vent pipe 11, and one end of the vent pipe 11 far away from the supporting tube 10 is communicated with the air outlet end of the air heater 29, so that hot air can be blown out conveniently.
A method of using a multi-ply paper product drying appliance in accordance with any one of claims 1-6, the method comprising: the method comprises the following steps:
a: placing a plurality of moist paper rolls on an automatic paper roll collecting and releasing frame, enabling single-layer paper products to pass through a plurality of partition plates 4 and a plurality of ironing press roll groups respectively, then pass through a combination roll group 8, a first press roller 13 and a second press roller 14, pass through the lower part of a drying spray head 15, and are fixed with an automatic paper roll collecting barrel at the other end of the device;
b, simultaneously starting a plurality of driving mechanisms to enable the motor 25 to rotate and drive the driving gear 27 to rotate, and enabling the driving gear 27 to rotate and drive the driven gear 28 to rotate, so that the pressing roller group, the merging roller group 8, the first pressing roller 13 and the second pressing roller 14 rotate to convey and dry the paper products;
c: starting the air heater 29, wherein the air heater 29 is sprayed out through the communicating cavity 30 and the air outlet holes 31 to dry the single-layer paper product passing through, and then the single-layer paper product passes through the space between the driving ironing press roller 5 and the driven ironing press roller 7 to be flattened and ironed, and moisture is removed during heating;
d: after pressing, the single-layer paper product is combined into a multi-layer paper product through the combination roller set 8, the multi-layer paper product is pressed through the pressing pattern rings 16 on the surfaces of the first pressing roller 13 and the second pressing roller 14, glue in the glue storage tank 18 is far away from the soaking sponge eraser 21 through siphoning, and a small amount of glue on the surface is adhered to the pressing pattern rings 16 when the pressing pattern rings rotate, so that the multi-layer paper product is connected more tightly when being pressed;
e: the laminated multi-layer paper product passes through a drying nozzle 15 to dry a small amount of glue on the surface and is wound on an automatic paper collecting cylinder, so that the multi-layer paper product can be dried.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A multi-ply paper product drying device, includes base (1), its characterized in that: the upper surface of the base (1) is fixedly connected with a drying box (2), a first support frame (6), a second support frame (9), a third support frame (12) and a support tube (10) in sequence from left to right, a plurality of partition plates (4) are fixedly connected inside the drying box (2), a plurality of groups of ironing and pressing rollers are arranged inside the first support frame (6), the ironing and pressing rollers comprise a driving ironing and pressing roller (5) and a driven ironing and pressing roller (7), a merging roller group (8) is arranged inside the second support frame (9), a first pressing roller (13) and a second pressing roller (14) are arranged inside the third support frame (12), and the top end of the support tube (10) is connected with a drying spray head (15);
the drying box is characterized in that two symmetrical sides of the drying box (2) are arranged in an opening manner, communicating cavities (30) are formed in the top wall and the bottom wall of the drying box (2) and the inner part of the partition plate (4), a plurality of air outlet holes (31) are formed in the top wall and the bottom wall of the drying box (2) and the upper surface and the lower surface of the partition plate (4), a hot air blower (29) is fixedly connected to one side of the outer wall of the drying box (2), and an air outlet pipe (32) is connected to the air outlet end of the hot air blower (29);
the initiative scalds the inside of compression roller (5) and driven boiling hot compression roller (7) and all is provided with the heater strip, pressfitting decorative pattern circle (16) have all been cup jointed to the both ends surface of first pressfitting roller (13) and second pressfitting roller (14) fixed, the last fixed surface of third support frame (12) is connected with stores up gluey case (18), the pressfitting decorative pattern circle (16) upper surface at second pressfitting roller (14) both ends all is provided with rubber coating mechanism (17), outer wall one side of first support frame (6), second support frame (9) and third support frame (12) all is provided with actuating mechanism.
2. The multi-ply paper product drying apparatus of claim 1 further comprising: the air outlet holes (31) are all communicated with the communicating cavity (30); a plurality of the section of exhaust vent (31) all is the horn type setting, the lateral wall of tuber pipe (32) passes through the connecting pipe and communicates chamber (30) intercommunication.
3. The multi-ply paper product drying apparatus of claim 1 further comprising: the glue coating mechanism (17) comprises a glue storage box (19), a sponge wiper (21) and a siphon (22), the top of the sponge wiper (21) is fixedly connected with the bottom of the glue storage box (19), the bottom of the sponge wiper (21) is in contact with a pressing pattern ring (16), a plurality of liquid outlet holes (20) are formed in the lower surface of the glue storage box (19), the siphon (22) is communicated with the top end of the glue storage box (19), one end, far away from the glue storage box (19), of the siphon (22) is communicated with the bottom of the glue storage box (18), and a visual window (23) is arranged on the surface of the glue storage box (19).
4. The multi-ply paper product drying apparatus of claim 1 further comprising: actuating mechanism includes drive case (24), motor (25), dwang (26), driving gear (27) and driven gear (28), the inside wall fixed connection of motor (25) and drive case (24), and dwang (26) is connected with the inside wall rotation of drive case (24), driving gear (27) fixed cover is connected in the drive end surface of motor (25), driven gear (28) are located the surface of dwang (26), driving gear (27) are connected with driven gear (28) meshing.
5. The multi-ply paper product drying apparatus of claim 1 further comprising: the side wall of the supporting pipe (10) is connected with a vent pipe (11), and one end of the vent pipe (11) far away from the supporting pipe (10) is communicated with the air outlet end of the air heater (29).
6. The multi-ply paper product drying apparatus of claim 1 further comprising: paper products (3) are arranged among the partition plates (4), and the paper products (3) pass through the ironing press roller group, the combination roller group (8), the first press roller (13) and the second press roller (14) group and extend to the lower part of the drying spray head (15).
7. A method of using a multi-ply paper product drying appliance as claimed in any one of claims 1 to 6, wherein: the method comprises the following steps:
a: placing a plurality of moist paper rolls on an automatic paper roll collecting and releasing frame, enabling single-layer paper products to pass through a plurality of partition plates (4) and a plurality of ironing roller sets respectively, then pass through a combination roller set (8), a first pressing roller (13) and a second pressing roller (14), pass through the lower part of a drying spray head (15), and are fixed with an automatic paper roll collecting tube at the other end of the device;
b, simultaneously starting a plurality of driving mechanisms to enable the motor (25) to rotate and drive the driving gear (27) to rotate, the driving gear (27) rotates and drives the driven gear (28) to rotate, so that the pressing roller group, the combination roller group (8), the first pressing roller (13) and the second pressing roller (14) rotate to convey and dry the paper products,
c: starting the air heater (29), wherein the air heater (29) is sprayed out through the communicating cavity (30) and the air outlet holes (31) to dry the single-layer paper product, and then the single-layer paper product is pressed and ironed between the driving ironing roller (5) and the driven ironing roller (7) and the moisture is removed during heating;
d: after pressing, the single-layer paper products are combined into a multi-layer paper product through a combining roller set (8), the multi-layer paper product is pressed through a pressing pattern ring (16) on the surfaces of a first pressing roller (13) and a second pressing roller (14), glue in a glue storage box (18) is far away from a soaking sponge eraser (21) through siphoning, and a small amount of glue on the surface can be taken out when the pressing pattern ring (16) rotates, so that the multi-layer paper product is connected more tightly when being pressed;
e: the laminated multi-layer paper product passes through a drying spray head (15) to dry a small amount of glue on the surface and is wound on an automatic paper collecting cylinder, so that the multi-layer paper product can be dried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011460675.6A CN112553956A (en) | 2020-12-11 | 2020-12-11 | Multi-layer paper product drying device and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011460675.6A CN112553956A (en) | 2020-12-11 | 2020-12-11 | Multi-layer paper product drying device and method thereof |
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| Publication Number | Publication Date |
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| CN112553956A true CN112553956A (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011460675.6A Pending CN112553956A (en) | 2020-12-11 | 2020-12-11 | Multi-layer paper product drying device and method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113844107A (en) * | 2021-11-12 | 2021-12-28 | 重庆维博动力科技有限公司 | Paperboard bonding equipment |
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| FR342595A (en) * | 1904-04-23 | 1904-09-12 | Friedrich Wilhelm Ruppel | Device for drying cardboard, paper, etc. |
| CN1469802A (en) * | 2000-08-15 | 2004-01-21 | M-��ʵ��˾ | Method and apparatus for producing board and a board product |
| CN101073933A (en) * | 2006-05-19 | 2007-11-21 | 许刚 | Production of engineering corrugated honeycomb with fire-retarding and mould-proof functions |
| CN202862664U (en) * | 2012-09-20 | 2013-04-10 | 上海宏图纸业有限公司 | Novel production device of multilayer composite paperboard |
| CN107655279A (en) * | 2017-10-18 | 2018-02-02 | 江门市新会区崖门镇众力经济发展有限公司 | A kind of fast-drying device for papermaking |
| CN208899237U (en) * | 2018-08-09 | 2019-05-24 | 维达纸业（山东）有限公司 | A kind of paper products sheet processing drying equipment that drying efficiency is high |
| CN210881133U (en) * | 2019-10-14 | 2020-06-30 | 安徽勿相忘科技有限公司 | Toilet paper pressing device for toilet paper processing machine |
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2020
- 2020-12-11 CN CN202011460675.6A patent/CN112553956A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR342595A (en) * | 1904-04-23 | 1904-09-12 | Friedrich Wilhelm Ruppel | Device for drying cardboard, paper, etc. |
| CN1469802A (en) * | 2000-08-15 | 2004-01-21 | M-��ʵ��˾ | Method and apparatus for producing board and a board product |
| CN101073933A (en) * | 2006-05-19 | 2007-11-21 | 许刚 | Production of engineering corrugated honeycomb with fire-retarding and mould-proof functions |
| CN202862664U (en) * | 2012-09-20 | 2013-04-10 | 上海宏图纸业有限公司 | Novel production device of multilayer composite paperboard |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113844107A (en) * | 2021-11-12 | 2021-12-28 | 重庆维博动力科技有限公司 | Paperboard bonding equipment |
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