CN204380927U - A kind of multiple roll coating system - Google Patents
A kind of multiple roll coating system Download PDFInfo
- Publication number
- CN204380927U CN204380927U CN201420819610.XU CN201420819610U CN204380927U CN 204380927 U CN204380927 U CN 204380927U CN 201420819610 U CN201420819610 U CN 201420819610U CN 204380927 U CN204380927 U CN 204380927U
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- China
- Prior art keywords
- metering roll
- roll
- frame
- transferring roller
- melt adhesive
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Abstract
The utility model discloses a kind of multiple roll coating system, it is characterized in that, comprise under(-)chassis, be fixed on the bottom slide rail on described under(-)chassis, be arranged on the metering roll frame on the slide rail of described bottom, the metering roll in described metering roll frame is fixed at two ends, to be arranged on the slide rail of described bottom and the transferring roller frame be positioned on rear side of described metering roll frame, the transferring roller in described transferring roller frame is fixed at two ends, be arranged on the arc coating die in described metering roll frame, be arranged on the applicator roll on rear side of described transferring roller, described arc coating die can horizontally slip along the axis of described metering roll above described metering roll, the utility model achieves the continuously accurate gluing of two component Reactive hot melt adhesive on wide cut coiled material, meet the Production requirement of market for such technique, and can be used for the coating of two component liquid glue and single-component glue, wide adaptability.
Description
[technical field]
The utility model relates to a kind of multiple roll coating system.
[background technology]
The coating apparatus used in the market has for the treatment of the hot-melt gluing equipment of the thermosol adhesive of one-component with for the treatment of two (many) components metering mixing automatic double surface gluers for liquid adhesive under normal temperature, but these two kinds of conventional coating apparatus are solid-state two component PURs under all cannot processing normal temperature.
In addition, the equipment be quantitatively applied to by glue after Homogeneous phase mixing on coiled material mainly contains the modes such as roller coat, spraying, blade coating, slit squeezing and coating in the market, but all can not realize the coating weight control of two component Reactive hot melt adhesive between 1.0 – 30.0 grams/m, precision controlling at ± 0.2 gram/m, velocity adaptive 10 – 300 ms/min of scopes.
[utility model content]
For above-mentioned technical problem, the utility model aims to provide a kind of multiple roll coating system, for the coating of two component Reactive hot melt adhesive, with in satisfied production for the coating requirement of two component Reactive hot melt adhesive.
In order to solve above technical problem, the concrete technical scheme of the utility model is as follows:
A kind of multiple roll coating system, it is characterized in that, comprise under(-)chassis, be fixed on the bottom slide rail on described under(-)chassis, be arranged on the metering roll frame on the slide rail of described bottom, the metering roll in described metering roll frame is fixed at two ends, to be arranged on the slide rail of described bottom and the transferring roller frame be positioned on rear side of described metering roll frame, the transferring roller in described transferring roller frame is fixed at two ends, be arranged on the arc coating die in described metering roll frame, be arranged on the applicator roll on rear side of described transferring roller, described arc coating die can horizontally slip along the axis of described metering roll above described metering roll.When described metering roll, described transferring roller, described applicator roll by described cylinder-pressing together time, by the velocity of rotation of the speed that horizontally slips and described metering roll that control described arc coating die, can at the uniform glue-line of metering roll surface coating one deck; When being greater than 1 by the linear resonance surface velocity ratio controlled between described transferring roller and described metering roll, described transferring roller will be stripped to the glue on described metering roll surface on described transferring roller, and the bondline thickness on described transferring roller will be thinner than the bondline thickness on described metering roll surface; Further, when being greater than 1 by the linear resonance surface velocity ratio controlled between described applicator roll and described transferring roller, described applicator roll will be stripped to described applicator roll on the surface the glue on described transferring roller surface, and the bondline thickness on described applicator roll roller will be thinner than the bondline thickness on described transferring roller surface, thus obtains very thin glue-line on the surface of described applicator roll.When needing the base material of gluing from process between described applicator roll and counter-pressure cylinder, under the pressure of counter-pressure cylinder, base material can take away a certain amount of glue from described applicator roll equably, completes coating.When the fabric width of base material and speed one timing of operation, by controlling the thickness that can control substrate surface glue-line for glue speed, the amplitude that control arc coating die horizontally slips can control the fabric width be coated with; When fabric width or the speed change of base material, system can adapt to for glue speed automatically in change, consistent with set glue-spread to guarantee the glue-spread in unit are.
Further, described metering roll frame is provided with the first group of cylinder controlling described metering roll and described transferring roller pressing or be separated, described under(-)chassis is provided with the second group of cylinder controlling described metering roll frame and described transferring roller frame and move along described bottom slide rail.
Further, described metering roll is driven by Timing Belt after slowing down by servomotor; Described transferring roller is driven by gear transmission after being slowed down by servomotor; Described arc coating die adopts servo motor after slowing down by chain-driving.
Further, under described under(-)chassis, pin cup and roller are housed.
Further, be provided with doctor blade holder below described metering roll, described doctor blade holder comprises one group of cylinder and silica gel blade, and described one group of cylinder can control described silica gel blade and contact with described metering roll or be separated, be provided with scrap rubber dish below described metering roll, described scrap rubber dish is fixed in described metering roll frame.When needing cleaning after a shutdown, the extended glue wiped off on metering roll of the silica gel blade on this doctor blade holder, the glue scraped flows in described scrap rubber dish.
Further, described transferring roller frame is provided with the scrap rubber dish be positioned at below described transferring roller.
Further, also comprise the base be arranged on rear side of described under(-)chassis, described applicator roll to be fixed on described base and to be driven by the drive unit be arranged on described base, and described base is provided with the scrap rubber dish be positioned at below described applicator roll.
Further, also comprise the jockey for connecting described under(-)chassis and described base, described jockey comprises the connecting screw rod be arranged on described under(-)chassis and the connecting screw hole be arranged on described base.
Described multiple roll coating system in use, need fix with the equipment of later process by base.Pin cup under first raise bottom framework, now the roller of under(-)chassis lands, described coating system is pushed to operating position, when namely just making the connecting screw rod be arranged on described under(-)chassis align with the connecting screw hole be arranged on later process equipment, rotate described connecting screw rod, make described multiple roll coating system form firm connection with later process equipment.Put down pin cup, make described coating system setups overall firm.
The glue that the scrap rubber dish be arranged at below described metering roll, transferring roller and described applicator roll flows down from roller when can be used for collecting device stop cleaning.
Further, also comprise the glue feeder for supplying glue to described multiple roll coating system, described glue feeder is connected with described coating die.
Further, described glue feeder comprises two melt adhesive buckets, two measurement gear pumps and a static mixing tube, heatable pipeline communication is all adopted in the middle of described melt adhesive bucket, measurement gear pump and static mixing tube, described static mixing tube is connected with described arc coating die, be provided with pressing plate, heating board, melten gel buffering area and LOAD CELLS in described melt adhesive bucket from top to bottom, described melt adhesive bucket lower surface is funnel-form; Described LOAD CELLS is installed on outside described lower surface, be applied on described LOAD CELLS with the glue weight of its inside in described melt adhesive bucket, when described LOAD CELLS monitor born weight be less than setting value time, namely send a signal to control system and to be shown by touch-screen or the mode alert such as signal lamp flicker adds glue.
Further, described melt adhesive bucket is provided with bung, bung is provided with for controlling cylinder that described pressing plate moves up and down and the Pressure gauge for showing cylinder pressure, being provided with valve for connecting the outlet of described melt adhesive bucket with the pipeline of described measurement gear pump, being provided with pressure sensor for the pipeline connecting described measurement gear pump and described static mixing tube.
Further, described static mixing tube outer wall cover has heating muff.
Further, the bung at least one melt adhesive bucket described is connected with vavuum pump and nitrogen cylinder, described vavuum pump, between nitrogen cylinder and described bung, is provided with valve.
When feeding intake, bung is opened, openning is scratched with cutter bottom the packaging film of glue, then together put in bucket together with packaging film, close bung, cylinder promotes pressing plate and presses down, heating board heats, and by the glue melting in packaging film, the glue after melting is from the melten gel buffering area of the inflow bottom, gap between heating board and bucket wall; Open the valve on pipeline between melt adhesive bucket and measurement gear pump, the glue of melting enters measurement gear pump, and measured gear pump quantitatively pumps, and measurement gear pump is by servo motor driven; After glue in two melt adhesive buckets pumps from measurement gear pump, flow in static mixing tube along pipeline and carry out Homogeneous phase mixing, static mixing tube outer wall cover has heating muff, ensures that the viscosity of two components when mixing is in lower state; When glue in cylinder will be finished using, the LOAD CELLS below cylinder will perceive the weight saving of melt adhesive bucket to setting value, send signal to control system, and then alert is supplemented new glue and come in.When supplementing glue, pressing plate first rises by the cylinder on bung, and operating personnel open bung, are taken away by the remaining packaging film on heating board, and then put into cylinder after new glue is opened packaging, and cover bung; If the glue dropped into can with the reaction of moisture in air, then first can start the valve of vavuum pump and vacuum line thereof, most air in bucket and moisture thereof are taken away, then the valve of vacuum line is closed, and then open nitrogen pipeline valve, in bucket, be filled with appropriate nitrogen, keep the pressure of nitrogen in bucket a little more than external atmosphere pressure; When there is blocking static mixing tube or its front end, pressure sensor can perceive the rising of glue pressure, if when exceeding setting value, can send signal to control system, and then alert gets rid of front end blockage problem.
The utility model provides a kind of multiple roll coating apparatus, has following beneficial effect:
(1) described multiple roll coating system, can realize accurately being coated on continuously on wide cut coiled material two (list) component reaction type PUR, coat weight ranges can from 0.6 – 30.0 grams/m, coating accuracy is less than or equal to 0.1 gram/m, coating speed scope can from 5 – 300 ms/min, and gluing temperature can from room temperature-– 135 DEG C.
(2) described multiple roll coating system, achieve the continuously accurate gluing of two (list) component Reactive hot melt adhesive on wide cut coiled material, alternative traditional organic solvent type glue, in the application of the industry such as plastic sheeting compound, automotive trim laminating, weaving laminating, Front cover of book and periodical overlay film, significantly reduces the problem getting rid of these industry organic solvent discharging contaminated environment even completely.
(3) described multiple roll coating system is utilized, can realize adopting solvent-free two (list) component Reactive hot melt adhesive to replace the upgrading that original solvent-borne type glue carries out producing laminating in the agent structure situation of not changing original dry compound machine, make-up machine, laminating machine etc., expand function and the value of existing equipment, reduce production cost and energy consumption.
(4) described multiple roll coating system, the adjustment of glue-spread and coating fabric width is carried out all on the touchscreen, and set i.e. gained, simple and fast, change existing automatic double surface gluer to need to regulate gap, change applicator roll or regulate glue concentration and carry out the mode that manual weighing's confirmation etc. wastes time and energy, significantly improve production efficiency.
(5) described multiple roll coating system; there is automatic flushing device; after a shutdown can by the most cull scraped clean on roller; improve traditional gluing mode and need the artificial situation using a large amount of organic solvent when cleaning; improve efficiency; decrease manpower expenditure, further reduce environmental pollution and the health hazards to operating personnel.
(6) described multiple roll coating system, glue groove participation work is not needed during operation, therefore can select curing rate response type glue and do not worry that glue to rise the too high problem that cannot be coated with in glue in-tank-solidification or viscosity faster, thus further increase production efficiency;
(7) glue feeder of described multiple roll coating system; there is the function vacuumized with inflated with nitrogen protection; for the preheating of response type glue before gluing, melting with deposit in process there is good protective effect, thus significantly can reduce the workload of maintaining aspect.
(8) glue feeder of described multiple roll coating system is provided with melten gel buffering area, need not shut down, ensure that continuous seepage when supplementary glue, improves production efficiency and reduce to produce raw material loss.
[accompanying drawing explanation]
Fig. 1 is the utility model preferably three-dimensional structure diagram one;
Fig. 2 is the utility model preferably three-dimensional structure diagram two;
Fig. 3 is the utility model preferably glue feeder schematic diagram.
[detailed description of the invention]
Below in conjunction with detailed description of the invention, the utility model is described in further detail.
In order to those skilled in the art can understand technical scheme provided by the utility model better, set forth below in conjunction with specific embodiment.
Be the utility model preferably three-dimensional structure diagram one and the utility model this three-dimensional structure diagram two better as depicted in figs. 1 and 2, comprise under(-)chassis 1, the jockey 3 of base 2 and in succession under(-)chassis 1 and base 2, under(-)chassis 1 is provided with bottom slide rail 13, metering roll frame 11 and transferring roller frame 12 are arranged on the slide rail 13 of bottom and also can slide along bottom slide rail 13 direction, metering roll frame is provided with the crossbeam 112 at connection frame two ends and the slide rail 113 parallel with crossbeam 112, coating die 111 is arranged on crossbeam 112, and be slidably connected with slide rail 113, the servomotor 114 be provided with on crossbeam 112 is horizontally slipped along slide rail 113 by chain-driving arc coating die 111, metering roll 115 two ends are arranged in metering roll frame 11, and be in immediately below slide rail 113, by being fixed on metering roll drive motors in metering roll frame 11 and decelerator 116 drives metering roll 115 to rotate along its axle center, coordinate the side-to-side movement of arc coating die 111, the glue that arc coating die is sent is coated in equably metering roll 115 surface, metering roll frame 11 side is also provided with metering roll compact heap 117, for mounting and dismounting metering roll 115, metering roll frame 11 is also provided with first group of cylinder 126 of the spacing for controlling metering roll frame 11 and transferring roller frame 12, metering roll frame 11 is also installed with the air pressure rotary knob 118 for adjusting each cylinder air pressure and the air gauge 119 for showing each cylinder air pressure, doctor blade holder 123 is provided with below metering roll 115, doctor blade holder 123 comprises one group of cylinder 124 and silica gel blade 125, one group of cylinder 123 can promote silica gel blade 125 and stretch out towards metering roll 115 direction, under(-)chassis 1 has pin cup 14 and roller (not shown), when needs moving bottom framework 1, rise pin cup 14, roller is landed, under(-)chassis 1 can be promoted, when moving to assigned position, fall pin cup 14, thus keep under(-)chassis 1 steady, transferring roller frame 12 is arranged on the right side of metering roll frame 11, transferring roller 121 two ends are fixed on transferring roller frame 12 both sides, transferring roller drive motors and decelerator 122 are arranged on transferring roller frame 12 side, and are rotated along its axle center by gear drive mobilization roller 121, jockey 3 comprises the connecting screw rod 31 be arranged on under(-)chassis 1 and the connecting screw hole 32 be arranged on base 2.
Be illustrated in figure 3 the utility model preferably glue feeder schematic diagram, comprise two melt adhesive buckets 41, measurement gear pump 42 and static mixing tube 43, melt adhesive bucket 41, adopting in the middle of measurement gear pump 42 and static mixing tube 43 can the pipeline communication of heating and thermal insulation, static mixing tube 43 illustrates with having in arc coating die 111(Fig. 1) also by can the pipeline of heating and thermal insulation be connected, pressing plate 411 is provided with from top to bottom in melt adhesive bucket 41, heating board 412, melten gel buffering area 413, melt adhesive bucket 41 lower surface is funnel-form, LOAD CELLS 414 is located at the below of melt adhesive bucket 41 and is born the weight of melt adhesive bucket 41, melt adhesive bucket 41 is provided with bung 44, bung 44 is provided with for controlling cylinder 441 that pressing plate 411 moves up and down and the Pressure gauge 442 for showing pressure in melt adhesive bucket, being provided with valve 45 for connecting melt adhesive bucket 41 outlet with the pipeline of measurement gear pump 42, being provided with pressure sensor 46 for connecting measurement gear pump 42 with the pipeline of static mixing tube 43, static mixing tube 43 outer wall cover has heating muff 431, bung 44 on one of them melt adhesive bucket 41 is connected with vavuum pump 443 and nitrogen cylinder 444, between vavuum pump 443 and bung 44, is provided with valve 445, between nitrogen cylinder 444 and bung 44, be provided with valve 446.
Being opened by bung 44 when feeding intake, scratching openning bottom the packaging film of glue with cutter, then together put in melt adhesive bucket 41 together with packaging film, close bung 11; If the component with the reaction of moisture in air understood by the glue dropped into, then should put into the melt adhesive bucket being connected with vavuum pump 443 and nitrogen cylinder 444, after the bung 44 that closes, first valve-off 446, open valve 445, start vavuum pump 443, when the pressure values of Pressure gauge 445 display is lower than after-0.08bar, valve-off 445, stop vavuum pump 443, then open valve 446, until Pressure gauge 445 show pressure values higher than 0.15bar after, can valve-off 446.Cylinder 441 promotes pressing plate 411 and presses down, and heating board 412 heats, and by the glue melting in packaging film, the glue after melting is from the melten gel buffering area 413 of the inflow bottom, gap between heating board 412 and bucket wall 47; Open the valve 45 between melt adhesive bucket 41 and measurement gear pump 42 on pipeline, the glue of melting enters measurement gear pump 42, and measured gear pump 42 quantitatively pumps, and measurement gear pump 42 is by servo motor driven; After glue in two melt adhesive buckets 41 pumps from measurement gear pump 42, flow in static mixing tube 43 along pipeline and carry out Homogeneous phase mixing, static mixing tube 43 outer wall cover has heating muff 431, ensures that the viscosity of two components when mixing is in lower state; When glue in cylinder will be finished using, LOAD CELLS 414 below cylinder perceives the weight saving of melt adhesive bucket 41 to setting value, send signal to control system, and then alert is supplemented new glue and is come in, when supplementing glue, pressing plate 411 first rises by the cylinder 441 on bung 44, and operating personnel open bung 44, remaining packaging film on heating board 412 is taken away, and then puts into bucket after new glue is opened packaging; When there is blocking static mixing tube 43 or its front end, pressure sensor 46 can perceive the rising of glue pressure, if when exceeding setting value, can send signal to control system, and then alert gets rid of front end blockage problem.
Below the utility model is described in detail, the above, be only the preferred embodiment of the utility model, do not limit the utility model practical range, namely allly do impartial change according to the application's scope and modify, all should still belong in the utility model covering scope.
Claims (14)
1. a multiple roll coating system, it is characterized in that, comprise under(-)chassis, be fixed on the bottom slide rail on described under(-)chassis, be arranged on the metering roll frame on the slide rail of described bottom, the metering roll in described metering roll frame is fixed at two ends, to be arranged on the slide rail of described bottom and the transferring roller frame be positioned on rear side of described metering roll frame, the transferring roller in described transferring roller frame is fixed at two ends, be arranged on the arc coating die in described metering roll frame, be arranged on the applicator roll on rear side of described transferring roller, described arc coating die can horizontally slip along the axis of described metering roll above described metering roll.
2. a kind of multiple roll coating system as claimed in claim 1, it is characterized in that, described metering roll frame is provided with the first group of cylinder controlling described metering roll and described transferring roller pressing or be separated, described under(-)chassis is provided with can control described metering roll frame and described transferring roller frame along described bottom slide rail move and with described applicator roll pressing or second group of cylinder being separated.
3. a kind of multiple roll coating system as claimed in claim 2, is characterized in that, described metering roll is driven by Timing Belt after slowing down by servomotor; Driven by gear transmission after described transferring roller is slowed down by servomotor; Described coating die adopts servomotor after slowing down by chain drive.
4. a kind of multiple roll coating system as claimed in claim 3, is characterized in that, pin cup and roller are housed under described under(-)chassis.
5. a kind of multiple roll coating system as claimed in claim 3, it is characterized in that, doctor blade holder is provided with below described metering roll, described doctor blade holder comprises one group of cylinder and silica gel blade, described one group of cylinder can promote described silica gel blade and contacts with metering roll or be separated, be provided with scrap rubber dish below described metering roll, described scrap rubber dish is fixed in described metering roll frame.
6. a kind of multiple roll coating system as claimed in claim 5, is characterized in that, described transferring roller frame is provided with the scrap rubber dish be positioned at below described transferring roller.
7. a kind of multiple roll coating system as claimed in claim 6, it is characterized in that, also comprise the base be arranged on rear side of described under(-)chassis, described applicator roll to be fixed on described base and to be driven by the drive unit be arranged on described base, and described base is provided with the scrap rubber dish be positioned at below described applicator roll.
8. a kind of multiple roll coating system as claimed in claim 7, it is characterized in that, also comprise the jockey for connecting described under(-)chassis and described base, described jockey comprises the connecting screw rod be arranged on described under(-)chassis and the connecting screw hole be arranged on described base.
9. a kind of multiple roll coating system as claimed in claim 3, is characterized in that, also comprises and is arranged at for for the glue feeder of glue on front side of described under(-)chassis, and described glue feeder and described arc coating die are by can the pipeline of heating and thermal insulation be connected.
10. a kind of multiple roll coating system as claimed in claim 9, it is characterized in that, described glue feeder comprises two melt adhesive buckets, two measurement gear pumps and static mixing tube, described melt adhesive bucket, measurement gear pump and static mixing tube adopt pipeline communication, described static mixing tube is connected with described arc coating die, be provided with pressing plate, heating board, melten gel buffering area in described melt adhesive bucket from top to bottom, described melt adhesive bucket lower surface is funnel-form, is provided with weight sensor outside described melt adhesive bucket lower surface.
11. a kind of multiple roll coating systems as claimed in claim 10, it is characterized in that, described melt adhesive bucket is provided with bung, bung is provided with for controlling cylinder that described pressing plate moves up and down and the Pressure gauge for showing described melt adhesive bucket internal gas pressure, for connecting the outlet of described melt adhesive bucket, the pipeline of described measurement gear pump, described static mixing tube has heating and heat preserving function, and described pipeline is provided with valve; Pipeline for connecting described measurement gear pump and described static mixing tube is provided with pressure sensor.
12. a kind of multiple roll coating systems as claimed in claim 11, is characterized in that, described two measurement gear pumps all have heating and heat preserving function, and adopt servo motor to slow down rear drive through decelerator; By regulating the rotating speed of two described gear pumps, i.e. proportioning between two components of adjustable glue.
13. a kind of multiple roll coating systems as claimed in claim 11, is characterized in that, described static mixing tube outer wall cover has heating muff.
14. a kind of multiple roll coating systems as claimed in claim 12, it is characterized in that, bung at least one melt adhesive bucket described is connected with vavuum pump and nitrogen cylinder, between described vavuum pump and described bung, is provided with pipeline and valve, between described nitrogen cylinder and described bung, be provided with pipeline and valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420819610.XU CN204380927U (en) | 2014-12-23 | 2014-12-23 | A kind of multiple roll coating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420819610.XU CN204380927U (en) | 2014-12-23 | 2014-12-23 | A kind of multiple roll coating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204380927U true CN204380927U (en) | 2015-06-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420819610.XU Expired - Fee Related CN204380927U (en) | 2014-12-23 | 2014-12-23 | A kind of multiple roll coating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204380927U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104475297A (en) * | 2014-12-23 | 2015-04-01 | 广州圣夫瑞实业有限公司 | Multi-roll coating system |
| CN108126862A (en) * | 2018-03-08 | 2018-06-08 | 瑞迈智能***（东莞）有限公司 | A kind of strip roll coater |
| CN113386395A (en) * | 2021-06-23 | 2021-09-14 | 苏州宏创包装科技有限公司 | Damp-proof manufacturing production line and method for paper bag production |
-
2014
- 2014-12-23 CN CN201420819610.XU patent/CN204380927U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104475297A (en) * | 2014-12-23 | 2015-04-01 | 广州圣夫瑞实业有限公司 | Multi-roll coating system |
| CN104475297B (en) * | 2014-12-23 | 2017-01-18 | 广州圣夫瑞实业有限公司 | Multi-roll coating system |
| CN108126862A (en) * | 2018-03-08 | 2018-06-08 | 瑞迈智能***（东莞）有限公司 | A kind of strip roll coater |
| CN113386395A (en) * | 2021-06-23 | 2021-09-14 | 苏州宏创包装科技有限公司 | Damp-proof manufacturing production line and method for paper bag production |
| CN113386395B (en) * | 2021-06-23 | 2022-07-05 | 苏州宏创包装科技有限公司 | Damp-proof manufacturing production line and method for paper bag production |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20161223 |