CN112626290A - Manufacturing equipment and preparation method of lasting antibacterial bacteriostatic leather - Google Patents
Manufacturing equipment and preparation method of lasting antibacterial bacteriostatic leather Download PDFInfo
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- CN112626290A CN112626290A CN202011418450.4A CN202011418450A CN112626290A CN 112626290 A CN112626290 A CN 112626290A CN 202011418450 A CN202011418450 A CN 202011418450A CN 112626290 A CN112626290 A CN 112626290A
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- fixedly connected
- stirring
- drying box
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C1/00—Chemical treatment prior to tanning
- C14C1/08—Deliming; Bating; Pickling; Degreasing
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B1/00—Manufacture of leather; Machines or devices therefor
- C14B1/58—Drying
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B1/00—Manufacture of leather; Machines or devices therefor
- C14B1/62—Winding or stacking hides or leather
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/04—Mineral tanning
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention discloses a manufacturing device of lasting antibacterial bacteriostatic leather and a preparation method thereof, the manufacturing device comprises a fixed frame, a stirring box, a U-shaped frame and a drying box, wherein the center of the top of the fixed frame is fixedly connected with the stirring box, the center of the top of the stirring box is provided with a driving motor, one side of the stirring box is fixedly welded with a feeding port, the center of the bottom of the stirring box is fixedly connected with a discharging port, a conveying frame is arranged right below the discharging port, the bottom of the conveying frame is fixedly welded with a supporting leg, the two ends of the supporting leg are respectively and rotatably connected with a rotating shaft, the outer side of the rotating shaft is rotatably connected with a conveying belt, the U-shaped frame is fixedly welded on one side of the fixed frame through a fixed block, the drying box is arranged on one side of the U-shaped frame, the center of the drying box is, can be widely applied to leather industry.
Description
Technical Field
The invention relates to the technical field of leather, in particular to manufacturing equipment and a preparation method of lasting antibacterial bacteriostatic leather.
Background
Leather is a natural renewable resource, has been used for tanning for thousands of years due to its unique physical, chemical and biological properties, and is widely used in the fields of daily necessities, clothing, shoemaking, public facilities and the like. Leather belongs to protein, lacks antibiotic bacteriostatic ability, the puzzlement of various microorganisms can be met in the use, people must secrete sweat and remain the dirt at the in-process of wearing shoes goods, very easily breed the bacterium, influence the health of mankind, in the manufacturing process of current leather, most antibiotic bacteriostatic effect is relatively poor, damage gradually easily in the long-time use, simultaneously in the production of leather, leather production is carried out to most segmentation, waste time and energy. Therefore, we improve the above and propose a manufacturing device and a preparation method of leather with lasting antibacterial and bacteriostatic effects.
Disclosure of Invention
In order to solve the technical problems, the invention provides the following technical scheme:
the invention relates to a manufacturing device of lasting antibacterial and bacteriostatic leather, which comprises a fixed frame, a stirring box, a U-shaped frame and a drying box, the top center of the fixed frame is fixedly connected with a stirring box, the top center of the stirring box is provided with a driving motor, a feeding port is fixedly welded at one side of the stirring box, a discharging port is fixedly connected at the center of the bottom of the stirring box, a conveying frame is arranged under the discharging port, the bottom of the conveying frame is fixedly welded with supporting legs, two ends of each supporting leg are respectively and rotatably connected with a rotating shaft, the outer side of the rotating shaft is rotatably connected with a conveyor belt, a U-shaped frame is fixedly welded on one side of the fixed frame through a fixed block, a drying box is arranged on one side of the U-shaped frame, and a groove is arranged at the center of the drying box, and the inside of the groove is connected with the conveying frame in a penetrating way.
The preferable technical scheme is characterized in that the front end of the conveying frame is fixedly connected with a cutting machine through a fixing block, the surface of the cutting machine is provided with a material conveying opening, and the material conveying opening is flush with the conveying belt.
According to a preferable technical scheme, limiting plates are symmetrically and fixedly welded on one side of the cutting machine, a servo motor is fixedly connected to one side of each limiting plate, an output shaft of the servo motor is rotatably connected with a ball screw, a sliding block is connected to the surface of the ball screw in a sliding mode, and a cutting knife is connected to one side of the sliding block through a bolt.
As a preferred technical scheme, a winding frame is arranged at the front end of the cutting machine, idler wheels are fixedly connected to four corners of the bottom of the winding frame, each idler wheel is provided with a wheel brake, a variable frequency motor is fixedly connected to one side of the winding frame, an output shaft of the variable frequency motor is rotatably connected with a synchronous belt, and the other end of the synchronous belt is rotatably connected with a winding roller.
As a preferred technical scheme, lifting and shrinking frames are fixedly welded at two ends of the bottom of the U-shaped frame, adjusting threads are arranged on the lifting and shrinking frames, connecting frames are fixedly welded at the bottom of the lifting and shrinking frames, and a plurality of connecting brushes are fixedly connected to the bottom of the connecting frames.
As a preferred technical scheme of the present invention, a heating box is fixedly connected to the top of the drying box, a heating fan is disposed inside the drying box and electrically connected to the heating box, and a temperature sensor is disposed inside the drying box, and the temperature sensor is PT 1000.
As a preferred technical scheme of the invention, an output shaft of the driving motor is rotatably connected with a stirring shaft, and a plurality of stirring blades are fixedly welded on the outer side of the stirring shaft.
A preparation method of lasting antibacterial bacteriostatic leather comprises the following steps:
the method comprises the following steps: taking materials: taking a plurality of parts of pickled barks, pickling liquor with a certain PH value, oxidized chitosan quaternary ammonium salt, water, an antibacterial agent, grease, a certain amount of aluminum tanning agent and zirconium tanning agent;
step two: preparation: taking a plurality of parts of pickled skins, adding a pickling solution with the pH value of 2.5-3.2, then adding a certain amount of oxidized chitosan quaternary ammonium salt, then sequentially adding water and an antibacterial agent, and finally adding a certain amount of aluminum tanning agent and zirconium tanning agent;
step three: stirring: preparation: taking a plurality of parts of pickled peels, adding pickling liquid with the pH value of 2.5-3.2, and stirring for 15 minutes; adding a certain amount of oxidized chitosan quaternary ammonium salt, and stirring for 30 minutes; sequentially adding water and an antibacterial agent, and finally adding a certain amount of an aluminum tanning agent and a zirconium tanning agent, and stirring and standing at the temperature of 60 ℃;
step four: drying: drying treatment is carried out through a drying box, and the temperature is controlled at 80 ℃;
step five: and (6) cutting and rolling.
The invention has the beneficial effects that: the two ends of the bottom of the U-shaped frame are fixedly welded with a lifting frame and are provided with adjusting threads, the bottom of the lifting frame is fixedly welded with a connecting frame, the bottom of the connecting frame is fixedly connected with a plurality of connecting brushes for performing brush leveling treatment, the top of a drying box is fixedly connected with a heating box, the inside of the drying box is provided with a heating fan and is electrically connected with the heating box, the inside of the drying box is provided with a temperature sensor, the model of the temperature sensor is PT1000, leather is dried conveniently through the arranged drying box, the temperature sensor can effectively detect the temperature condition inside, the front end of a cutting machine is provided with a winding frame, the four corners of the bottom of the winding frame are fixedly connected with idler wheels, the idler wheels are provided with wheel brakes, one side of the winding frame is fixedly connected with a variable frequency motor, and an output shaft of, the other end of the synchronous belt is rotatably connected with a winding roller, and a winding frame is arranged at the front end of the cutting machine, so that the dried leather can be wound conveniently.
Drawings
FIG. 1 is a schematic structural diagram of a manufacturing apparatus and a preparation method of leather with lasting antibacterial and bacteriostatic effects according to the present invention;
FIG. 2 is a schematic structural diagram of a cutting machine of the manufacturing equipment and the preparation method of the lasting antibacterial bacteriostatic leather of the invention;
fig. 3 is a partially enlarged schematic view of structure a of the manufacturing equipment and the preparation method of the lasting antibacterial bacteriostatic leather of the invention.
In the figure: 1. a fixed mount; 2. a stirring box; 3. a drive motor; 4. a feeding port; 5. a discharge port; 6. a transfer frame; 7. supporting legs; 8. a conveyor belt; 9. a U-shaped frame; 10. a drying box; 11. a cutting machine; 12. a winding frame; 13. a variable frequency motor; 14. a wind-up roll; 15. a limiting plate; 16. a servo motor; 17. a ball screw; 18. a slider; 19. a cutting knife; 20. a material conveying port; 21. a lifting and shrinking frame; 22. a connecting frame; 23. and (4) connecting the brushes.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example (b): as shown in figures 1-3, the invention relates to a manufacturing device of lasting antibacterial and bacteriostatic leather, which comprises a fixed frame 1, a stirring box 2, a U-shaped frame 9 and a drying box 10, wherein the center of the top of the fixed frame 1 is fixedly connected with the stirring box 2, the center of the top of the stirring box 2 is provided with a driving motor 3, one side of the stirring box 2 is fixedly welded with a feeding port 4, the center of the bottom of the stirring box 2 is fixedly connected with a discharging port 5, a conveying frame 6 is arranged right below the discharging port 5, the bottom of the conveying frame 6 is fixedly welded with supporting legs 7, two ends of the supporting legs 7 are respectively rotatably connected with rotating shafts, the outer side of each rotating shaft is rotatably connected with a conveying belt 8, one side of the fixed frame 1 is fixedly welded with the U-shaped frame 9 through a fixed block, and a groove is arranged at the center of the drying box 10, and the inside of the groove is connected with the conveying frame 6 in a penetrating way.
Wherein, fixed block fixedly connected with guillootine 11 is passed through to the front end of conveying frame 6, and defeated material mouth 20 has been seted up on the surface of guillootine 11, and defeated material mouth 20 and conveyer belt 8 looks parallel and level, is convenient for cut the processing through fixed block fixedly connected with guillootine 11 to the leather after drying at the front end of conveying frame 6.
Wherein, the fixed welding of one side symmetry of guillootine 11 has limiting plate 15, and one side fixedly connected with servo motor 16 of limiting plate 15, and servo motor 16's output shaft rotates and is connected with ball 17, and ball 17's surperficial sliding connection has slider 18, and one side bolted connection of slider 18 has cutting knife 19, and servo motor 16's output shaft rotates and is connected with ball 17 and can make its cutting knife 19 horizontal slip.
Wherein, the front end of guillootine 11 is provided with rolling frame 12, and the bottom four corners fixedly connected with gyro wheel of rolling frame 12, and the gyro wheel has the wheel to stop, and one side fixedly connected with inverter motor 13 of rolling frame 12, inverter motor 13's output shaft rotate and are connected with the hold-in range, and the other end of hold-in range rotates and is connected with wind-up roll 14, is provided with rolling frame 12 at the front end of guillootine 11 and is convenient for carry out the rolling processing to the leather after drying.
Wherein, the fixed welding in bottom both ends of U type frame 9 has the frame 21 that contracts that rises, and is provided with the regulation screw thread, and the fixed welding in bottom of the frame 21 that contracts that rises has link 22, and the brush 23 is connected to the bottom fixedly connected with a plurality of link 22, and the brush 23 is connected in the bottom fixedly connected with a plurality of link 22 and is convenient for brush the parallel and level and handle.
Wherein, the top fixedly connected with heating cabinet of stoving case 10, the inside of stoving case 10 is equipped with the heating fan to with heating cabinet electric connection, and the inside of stoving case 10 is equipped with temperature sensor, and temperature sensor's model is PT1000, is convenient for dry the leather through stoving case 10 that is equipped with, and the temperature sensor that is equipped with simultaneously can effectively detect the inside temperature condition.
Wherein, driving motor 3's output shaft rotates and is connected with the (mixing) shaft, and the outside fixed welding of (mixing) shaft has a plurality of stirring fan blade, and driving motor 3's output shaft rotates and is connected with (mixing) shaft and stirring fan blade and makes its stirring that can be more abundant.
A preparation method of lasting antibacterial bacteriostatic leather comprises the following steps:
the method comprises the following steps: taking materials: taking a plurality of parts of pickled barks, pickling liquor with a certain PH value, oxidized chitosan quaternary ammonium salt, water, an antibacterial agent, grease, a certain amount of aluminum tanning agent and zirconium tanning agent;
step two: preparation: taking a plurality of parts of pickled skins, adding a pickling solution with the pH value of 2.5-3.2, then adding a certain amount of oxidized chitosan quaternary ammonium salt, then sequentially adding water and an antibacterial agent, and finally adding a certain amount of aluminum tanning agent and zirconium tanning agent;
step three: stirring: preparation: taking a plurality of parts of pickled peels, adding pickling liquid with the pH value of 2.5-3.2, and stirring for 15 minutes; adding a certain amount of oxidized chitosan quaternary ammonium salt, and stirring for 30 minutes; sequentially adding water and an antibacterial agent, and finally adding a certain amount of an aluminum tanning agent and a zirconium tanning agent, and stirring and standing at the temperature of 60 ℃;
step four: drying: drying treatment is carried out through the drying box 10, and the temperature is controlled at 80 ℃;
step five: and (6) cutting and rolling.
The working principle is as follows: firstly, checking whether the device is normal, when the checking is finished, switching on the device, fixedly connecting a stirring box 2 at the top center of a fixing frame 1, arranging a driving motor 3 at the top center of the stirring box 2, fixedly welding a feeding port 4 at one side of the stirring box 2, putting the materials for preparing leather into the stirring box 2 through the feeding port 4, arranging the driving motor 3 at the top center of the stirring box 2, rotatably connecting an output shaft of the driving motor 3 with a stirring shaft, fixedly welding a plurality of stirring blades at the outer side of the stirring shaft, rotatably connecting the stirring shaft and the stirring blades with an output shaft of the driving motor 3 to more fully stir, fixedly welding a U-shaped frame 9 at one side of the fixing frame 1 through a fixing block, fixedly welding lifting frames 21 at two ends of the bottom of the U-shaped frame 9 and arranging adjusting threads, fixedly welding connecting frames 22 at the bottom of the lifting frames 21, the bottom of the connecting frame 22 is fixedly connected with a plurality of connecting brushes 23, the bottom of the connecting frame 22 is fixedly connected with a plurality of connecting brushes 23 for facilitating the brush leveling treatment, one side of the U-shaped frame 9 is provided with a drying box 10, the front end of the conveying frame 6 is fixedly connected with a cutting machine 11 through a fixing block, the surface of the cutting machine 11 is provided with a material conveying opening 20, and the material conveying opening 20 is level with the conveying belt 8, a cutting machine 11 is fixedly connected with the front end of the conveying frame 6 through a fixed block so as to facilitate the cutting treatment of the dried leather, and finally a winding frame 12 is arranged at the front end of the cutting machine 11, and the four corners of the bottom of the winding frame 12 are fixedly connected with idler wheels with wheel brakes, one side of the winding frame 12 is fixedly connected with a variable frequency motor 13, the output shaft of the variable frequency motor 13 is rotationally connected with a synchronous belt, the other end of the synchronous belt is rotationally connected with a winding roller 14, a winding frame 12 is arranged at the front end of the cutting machine 11 so as to facilitate the winding treatment of the dried leather.
Finally, it should be noted that: in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The manufacturing equipment for the lasting antibacterial leather comprises a fixing frame (1), an agitating tank (2), a U-shaped frame (9) and a drying box (10), and is characterized in that the agitating tank (2) is fixedly connected to the center of the top of the fixing frame (1), a driving motor (3) is arranged at the center of the top of the agitating tank (2), a feeding port (4) is fixedly welded at one side of the agitating tank (2), a discharging port (5) is fixedly connected to the center of the bottom of the agitating tank (2), a conveying frame (6) is arranged under the discharging port (5), supporting legs (7) are fixedly welded at the bottom of the conveying frame (6), rotating shafts are respectively and rotatably connected to the two ends of the supporting legs (7), a conveying belt (8) is rotatably connected to the outer side of each rotating shaft, and the U-shaped frame (9) is fixedly welded at one side of the fixing frame (1) through the fixing block, and a drying box (10) is arranged on one side of the U-shaped frame (9), a groove is formed in the center of the drying box (10), and the inside of the groove is connected with the conveying frame (6) in a penetrating manner.
2. The manufacturing equipment of lasting antibiotic bacterial inhibition type leather of claim 1, characterized in that, the front end of conveying frame (6) is through fixed block fixedly connected with guillootine (11), material conveying mouth (20) has been seted up on the surface of guillootine (11), just material conveying mouth (20) with conveyer belt (8) is parallel and level mutually.
3. The manufacturing equipment of lasting antibiotic bacterial inhibition type leather of claim 1, characterized in that, the fixed welding of one side symmetry of guillootine (11) has limiting plate (15), just one side fixedly connected with servo motor (16) of limiting plate (15), the output shaft of servo motor (16) rotates and is connected with ball (17), the sliding surface of ball (17) is connected with slider (18), one side bolted connection of slider (18) has cutting knife (19).
4. The manufacturing equipment of a lasting antibiotic bacteriostasis type leather of claim 2, characterized in that, the front end of guillootine (11) is provided with rolling frame (12), just the bottom four corners fixedly connected with gyro wheel of rolling frame (12), the gyro wheel has the wheel to stop, one side fixedly connected with inverter motor (13) of rolling frame (12), the output shaft rotation of inverter motor (13) is connected with the hold-in range, the other end rotation of hold-in range is connected with wind-up roll (14).
5. The manufacturing equipment of persistent antibacterial and bacteriostatic leather according to claim 1, characterized in that both ends of the bottom of the U-shaped frame (9) are fixedly welded with a telescopic frame (21), and the U-shaped frame is provided with adjusting threads, the bottom of the telescopic frame (21) is fixedly welded with a connecting frame (22), and the bottom of the connecting frame (22) is fixedly connected with a plurality of connecting brushes (23).
6. The manufacturing equipment of persistent antibacterial and bacteriostatic leather according to claim 1, characterized in that the top of the drying box (10) is fixedly connected with a heating box, a heating fan is arranged inside the drying box (10) and electrically connected with the heating box, a temperature sensor is arranged inside the drying box (10), and the model of the temperature sensor is PT 1000.
7. The manufacturing equipment of the leather with lasting antibacterial and bacteriostatic effects according to claim 1, wherein the output shaft of the driving motor (3) is rotatably connected with a stirring shaft, and a plurality of stirring blades are fixedly welded on the outer side of the stirring shaft.
8. A preparation method of lasting antibacterial bacteriostatic leather is characterized by comprising the following steps:
the method comprises the following steps: taking materials: taking a plurality of parts of pickled barks, pickling liquor with a certain PH value, oxidized chitosan quaternary ammonium salt, water, an antibacterial agent, grease, a certain amount of aluminum tanning agent and zirconium tanning agent;
step two: preparation: taking a plurality of parts of pickled skins, adding a pickling solution with the pH value of 2.5-3.2, then adding a certain amount of oxidized chitosan quaternary ammonium salt, then sequentially adding water and an antibacterial agent, and finally adding a certain amount of aluminum tanning agent and zirconium tanning agent;
step three: stirring: preparation: taking a plurality of parts of pickled peels, adding pickling liquid with the pH value of 2.5-3.2, and stirring for 15 minutes; adding a certain amount of oxidized chitosan quaternary ammonium salt, and stirring for 30 minutes; sequentially adding water and an antibacterial agent, and finally adding a certain amount of an aluminum tanning agent and a zirconium tanning agent, and stirring and standing at the temperature of 60 ℃;
step four: drying: drying treatment is carried out through a drying box (10) with the temperature controlled at 80 ℃;
step five: and (6) cutting and rolling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011418450.4A CN112626290A (en) | 2020-12-07 | 2020-12-07 | Manufacturing equipment and preparation method of lasting antibacterial bacteriostatic leather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011418450.4A CN112626290A (en) | 2020-12-07 | 2020-12-07 | Manufacturing equipment and preparation method of lasting antibacterial bacteriostatic leather |
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| Publication Number | Publication Date |
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| CN112626290A true CN112626290A (en) | 2021-04-09 |
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| CN202011418450.4A Pending CN112626290A (en) | 2020-12-07 | 2020-12-07 | Manufacturing equipment and preparation method of lasting antibacterial bacteriostatic leather |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105692287A (en) * | 2016-04-27 | 2016-06-22 | 昆山巨闳机械科技有限公司 | Direct leather cutting device |
| CN106222328A (en) * | 2016-08-31 | 2016-12-14 | 四川大学 | A kind of manufacture method of durable antibiotic antibacterial type leather |
| CN206626932U (en) * | 2017-03-31 | 2017-11-10 | 浙江博力莫新材料科技有限公司 | A kind of leather drying unit |
| CN108611451A (en) * | 2018-06-27 | 2018-10-02 | 于浩淼 | A kind of high-performance leather green manufacturing frequency conversion leather tanning device |
-
2020
- 2020-12-07 CN CN202011418450.4A patent/CN112626290A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105692287A (en) * | 2016-04-27 | 2016-06-22 | 昆山巨闳机械科技有限公司 | Direct leather cutting device |
| CN106222328A (en) * | 2016-08-31 | 2016-12-14 | 四川大学 | A kind of manufacture method of durable antibiotic antibacterial type leather |
| CN206626932U (en) * | 2017-03-31 | 2017-11-10 | 浙江博力莫新材料科技有限公司 | A kind of leather drying unit |
| CN108611451A (en) * | 2018-06-27 | 2018-10-02 | 于浩淼 | A kind of high-performance leather green manufacturing frequency conversion leather tanning device |
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Application publication date: 20210409 |
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