CN107344427B - Round bottom plastic bag production device based on blown film techniques - Google Patents
Round bottom plastic bag production device based on blown film techniques Download PDFInfo
- Publication number
- CN107344427B CN107344427B CN201710855459.3A CN201710855459A CN107344427B CN 107344427 B CN107344427 B CN 107344427B CN 201710855459 A CN201710855459 A CN 201710855459A CN 107344427 B CN107344427 B CN 107344427B
- Authority
- CN
- China
- Prior art keywords
- fixed
- electric pushrods
- manufacturing machine
- film manufacturing
- sealing plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The round bottom plastic bag production device based on blown film techniques that the invention discloses a kind of, is related to round bottom polybag production technical field.It includes inflation film manufacturing machine；Inflation film manufacturing machine lower end has been sequentially distributed supply unit, cutting unit, back cover unit and flash trimming unit from top to bottom；It is fixedly connected by link between the supply unit and flash trimming unit；Control circuit is provided on inflation film manufacturing machine；The supply unit includes the delivery pipe being connected to inflation film manufacturing machine lower end fixing seal；Delivery pipe is vertically arranged；In delivery pipe, inflation film manufacturing machine lower end is fixed with A electric pushrods；The output end of A electric pushrods straight down and is fixedly connected with transfer block.The beneficial effects of the invention are as follows：It can produce round bottom polybag, largely reduce bottom fold, when eliminating multiple plastic bag covers together the problem of the occupied space of bottom.
Description
Technical field
The present invention relates to round bottom polybag production technical fields.
Background technology
Retrieval finds, application No. is 201510476628.3 Chinese patent application, to have invented a kind of novel simple operation rubbish
Rubbish bucket, according to its elaboration it can be found that, when multiple refuse bags, which are sequentially sleeved in, is put into togerther dustbin, after rubbish is filled,
Innermost refuse bag need to only be proposed, you can directly use next refuse bag, bagging again is both needed to traditional use every time
Mode compare, such mode is with the obvious advantage.
However the production technology of existing plastic garbage bag, the plastic garbage bag existing defects produced, when expanded, modeling
A large amount of folds are will produce at material refuse bag bottom seal, when multiple plastic garbage bags are nested together, multiple plastic garbage bag bottoms
The Imbricate pattern in portion can occupy big quantity space together, be unable to reach the effect that bagging uses.The invention discloses one kind thus
Round bottom plastic bag production device based on blown film techniques, can effectively solve the problem that the above problem.
Invention content
The technical problems to be solved by the invention are to be directed to above-mentioned technical deficiency, are provided a kind of based on blown film skill
The round bottom plastic bag production device of art, can produce round bottom polybag, largely reduce bottom fold, eliminate multiple polybags
When being nested together the problem of the occupied space of bottom.
The technical solution adopted by the present invention is：A kind of round bottom plastic bag production device based on blown film techniques is provided, including
Inflation film manufacturing machine；Inflation film manufacturing machine lower end has been sequentially distributed supply unit, cutting unit, back cover unit and flash trimming unit from top to bottom；It is described
It is fixedly connected by link between supply unit and flash trimming unit；Control circuit is provided on inflation film manufacturing machine；
The supply unit includes the delivery pipe being connected to inflation film manufacturing machine lower end fixing seal；Delivery pipe is vertically set
It sets；In delivery pipe, inflation film manufacturing machine lower end is fixed with A electric pushrods；The output end of A electric pushrods straight down and is fixedly connected with defeated
Send block；It is cavity structure inside transfer block；Transfer block side wall is evenly distributed with venthole；A air pumps are fixed with inside transfer block；A
The a port of air pump is located in transfer block, another port passes through transfer block upper end；It is installed at the air outlet of the inflation film manufacturing machine
There is solenoid valve；
The cutting unit includes the working plate for being fixedly attached to conveying pipe outer wall lower end；Working plate lower end front and rear sides
It is respectively fixed with support bar；Support bar is arranged along horizontal left and right directions；It is provided with sliding slot along its length on the inside of support bar；In sliding slot
Slidably connect sliding block；It is fixed with connection strap between in the middle part of two sliding blocks；A is fixed on the left of connection strap, between two sliding blocks to cut
Fracture of wire；Right side is fixed with B electric pushrods in the sliding slot；The output end level of B electric pushrods is fixed to the left and with sliding block；
The back cover unit includes the positioning pipe being vertically arranged；Positioning pipe and delivery pipe corresponding matching；Positioning
Substrate is nested and fixed in pipe outer wall lower end；Substrate lower end is equipped with capping；The capping is corresponding with positioning infratubal port；
Capping is made of several sealing plates；Sealing plate is distributed uniformly and circumferentially；It is cavity structure inside sealing plate；Sealing plate upper end is uniformly distributed
There is ventilation hole；Substrate lower end outside has been distributed uniformly and circumferentially torque motor；The output end of torque motor is in the horizontal direction
It is fixedly connected with shaft；The sealing plate is corresponded with torque motor；It is connect by shaft with substrate on the outside of sealing plate；Inside sealing plate
Heating wire is installed；The ventilation duct of annular is sealedly connected with across sealing plate；The sealing plate is connected to ventilation duct；Position pipe outer wall
It is fixed with B air pumps；The a port of B air pumps is communicated with branch pipe；Branch pipe is connected to ventilation duct；
The flash trimming unit includes the mounting shell of upper end opening；Positioning pipe lower end is fixedly connected with mounting shell internal upper part；
Bottom end is vertically fixed with sleeve in mounting shell；In sleeve, bottom end is fixed with C electric pushrods in mounting shell；C electric pushrods
Output end straight up and be fixedly connected with supporting block；Supporting block is slidably matched in the vertical direction with sleeve；In supporting block
End is fixed with driving motor；The output end of driving motor straight up and is fixedly connected with rotating knife；Under rotating knife and positioning pipe
Port is corresponding；
It is provided with microprocessor in the control circuit；A electric pushrods, B electric pushrods, C electric pushrods, solenoid valve, A
Air pump, B air pumps, torque motor, heating wire and driving motor are connected with microprocessor.
The technical program is advanced optimized, the transfer block upper end of the round bottom plastic bag production device based on blown film techniques is provided with
Air inlet；Transfer block lower end is equipped with relief valve.
The technical program is advanced optimized, on the right side of the connection strap of the round bottom plastic bag production device based on blown film techniques, two
B cut-out silks are fixed between a sliding block.
The beneficial effects of the present invention are：
1, inflation film manufacturing machine can blow out cylindric plastic film, by the function of transportation of supply unit, make plastic film into
Enter to back cover unit and realizes back cover；The suction function that transfer block can be generated by A air pumps, side wall is adsorbed on by plastic film,
With the effect of A electric pushrods to realize the process of conveying plastic film；Sealing plate can be generated negative by the effect of B air pumps
Pressure, adsorbs plastic film side wall；In cutting unit, is slided in sliding slot by B electric pushrod band movable sliders, A can be made to cut
Plastic film is segmented by fracture of wire；Torque motor drives shaft sealing plate can be made to rotate, and in the state of negative-pressure adsorption, passes through sealing plate
Mutually close up, so that plastic film bottom is gathered；It, can be hot to the plastic film gathered by the heat effect of heating wire
Envelope；Flash trimming unit can be pruned fold part extra after heat-sealing by rotating knife, to form the polybag of round bottom shape.
2, by relief valve and air inlet, extra air can be discharged, keep the balance of conveying overpressure.It avoids defeated
Send above block that pressure is excessive to cause transfer block to can not be successfully the problem of reverting to initial position.
3, A cuts off silk and B cut-out silks are respectively at left and right sides of connection strap, and the cut-out to plastic film can be facilitated to grasp
Make, improves cut-out efficiency.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is structural schematic diagram at cutting unit；
Fig. 3 is decomposition chart at transfer block；
Fig. 4 is decomposition chart at back cover unit and flash trimming unit；
Fig. 5 is the logic circuit diagram of the present invention.
In figure, 1, inflation film manufacturing machine；2, delivery pipe；3, A electric pushrods；4, transfer block；5, venthole；6, A air pumps；7, electromagnetism
Valve；8, working plate；9, support bar；10, sliding slot；11, sliding block；12, connection strap；13, A cuts off silk；14, B electric pushrods；15, fixed
Position pipe；16, substrate；17, sealing plate；18, ventilation hole；19, torque motor；20, shaft；21, heating wire；22, ventilation duct；23, B gas
Pump；24, branch pipe；25, mounting shell；26, sleeve；27, C electric pushrods；28, supporting block；29, driving motor；30, rotating knife；31、
Air inlet；32, relief valve；33, B cuts off silk；34, link.
Specific implementation mode
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in Figure 1, the round bottom plastic bag production device based on blown film techniques, including inflation film manufacturing machine 1；1 lower end of inflation film manufacturing machine by
Top to bottm has been sequentially distributed supply unit, cutting unit, back cover unit and flash trimming unit；The supply unit and flash trimming unit it
Between be fixedly connected by link 34；It is provided with control circuit on inflation film manufacturing machine 1.
As shown in figure 3, the supply unit includes the delivery pipe 2 being connected to 1 lower end fixing seal of inflation film manufacturing machine；Delivery pipe
2 are vertically arranged；In delivery pipe 2,1 lower end of inflation film manufacturing machine is fixed with A electric pushrods 3；The output end of A electric pushrods 3 is vertical
Downwards and it is fixedly connected with transfer block 4；4 inside of transfer block is cavity structure；4 side wall of transfer block is evenly distributed with venthole 5；It is defeated
It send and is fixed with A air pumps 6 inside block 4；The a port of A air pumps 6 is located in transfer block 4, another port passes through in transfer block 4
End；Solenoid valve 7 is installed at the air outlet of the inflation film manufacturing machine 1.
As shown in Fig. 2, the cutting unit includes the working plate 8 for being fixedly attached to 2 outer wall lower end of delivery pipe；Working plate
8 lower ends front and rear sides are respectively fixed with support bar 9；Support bar 9 is arranged along horizontal left and right directions；9 inside of support bar is along length side
To being provided with sliding slot 10；Sliding block 11 is slidably connected in sliding slot 10；It is fixed with connection strap 12 between two 11 middle parts of sliding block；Connection strap
On the left of in the of 12, A cut-out silks 13 are fixed between two sliding blocks 11；Right side is fixed with B electric pushrods 14 in the sliding slot 10；B is electronic
The output end level of push rod 14 is fixed to the left and with sliding block 11.
As shown in figure 4, the back cover unit includes the positioning pipe 15 being vertically arranged；Positioning pipe 15 and delivery pipe
2 corresponding matchings；Substrate 16 is nested and fixed in 15 outer wall lower end of positioning pipe；16 lower end of substrate is equipped with capping；The capping
It is corresponding with 15 lower port of positioning pipe；Capping is made of several sealing plates 17；Sealing plate 17 is distributed uniformly and circumferentially；In sealing plate 17
Portion is cavity structure；17 upper end of sealing plate is evenly distributed with ventilation hole 18；16 lower end outside of substrate has been distributed uniformly and circumferentially
Torque motor 19；The output end of torque motor 19 is fixedly connected with shaft 20 in the horizontal direction；The sealing plate 17 and torque motor
19 correspond；17 outside of sealing plate is connect with substrate 16 by shaft 20；Heating wire 21 is installed inside sealing plate 17；Across sealing plate
17 are sealedly connected with the ventilation duct 22 of annular；The sealing plate 17 is connected to ventilation duct 22；15 outer wall of positioning pipe is fixed with B air pumps
23；The a port of B air pumps 23 is communicated with branch pipe 24；Branch pipe 24 is connected to ventilation duct 22.
The flash trimming unit includes the mounting shell 25 of upper end opening；15 lower end of positioning pipe is fixed with 25 internal upper part of mounting shell
Connection；Bottom end is vertically fixed with sleeve 26 in mounting shell 25；In sleeve 26, it is electronic to be fixed with C for bottom end in mounting shell 25
Push rod 27；The output end of C electric pushrods 27 straight up and is fixedly connected with supporting block 28；Supporting block 28 is with sleeve 26 vertical
It is slidably matched on direction；28 upper end of supporting block is fixed with driving motor 29；The output end of driving motor 29 is straight up and fixed
It is connected with rotating knife 30；Rotating knife 30 is corresponding with 15 lower port of positioning pipe.
As shown in figure 5, being provided with microprocessor in the control circuit；A electric pushrods 3, B electric pushrods 14, C are electronic
Push rod 27, solenoid valve 7, A air pumps 6, B air pumps 23, torque motor 19, heating wire 21 and driving motor 29 with microprocessor phase
Even.
4 upper end of transfer block is provided with air inlet 31；4 lower end of transfer block is equipped with relief valve 32；12 right side of connection strap, two cunnings
B cut-out silks 33 are fixed between block 11.
In delivery pipe 2, the air outlet of inflation film manufacturing machine 1 is persistently dried, and so that plastic film is presented cylindric, at this time transfer block 4
In plastic film, microprocessor control A air pumps 6 start later, and the port pumping being located in transfer block 4 passes through transfer block 4
The port of upper end is vented, and at this time by the effect of venthole 5, transfer block 4 generates negative-pressure adsorption effect, and plastic film is attracted to
4 surface of transfer block；By after a certain period of time（Ensure that plastic film is adsorbed by transfer block 4）, microprocessor control A electric pushrods 3
Work pushes transfer block 4 to move down, to drive plastic film to move down, when 3 output end of A electric pushrods is elongated to most
When final position is set, transfer block 4 reaches at back cover unit at this time, and plastic film bottom end is stretched out from 15 lower end of positioning pipe.
Sealing plate 17 at back cover unit is now in vertical direction, ensure that the unobstructed of positioning pipe 15, enables transfer block 4
It passes through.When 3 output end of A electric pushrods is elongated to final position, microprocessor controls B air pumps 23 and starts（Startup opportunity can
To be determined by setting time, starts corresponding travel switch when also can be elongated to final position by A electric pushrods 3 and realize）,
It is evacuated at the port being connected to branch pipe 24, to which by the effect of ventilation duct 22 and ventilation hole 18, sealing plate 17 generates negative-pressure adsorption
Effect, similarly, at the same time, microprocessor controls the direction conversion of 6 exhaust of A air pumps, and A air pumps 6 pass through in transfer block 4 at this time
The port at end is evacuated, the port exhaust in transfer block 4, is dried at this time at venthole 5, plastic film is blown off transfer block 4, therefore
Plastic film is attracted on sealing plate 17.
By after a certain period of time（Ensure that plastic film is adsorbed by sealing plate 17）, 3 output end of microprocessor control A electric pushrods
Reverse operation drives transfer block 4 to move up, and solenoid valve 7 is closed at this time, and inflation film manufacturing machine 1 does not continue to blow into delivery pipe 2.
Similarly, microprocessor control mode motor 19 is started to work at this time, is driven sealing plate 17 to be gradually rotated up by shaft 20, is made envelope
Plate 17 mutually closes up, therefore plastic film bottom is gathered, by after a certain period of time, gathering completion, microprocessor at this time
It controls heating wire 21 to work, plastic film bottom is heat-sealed.
After the completion of heat-sealing, since sealing plate 17 is squeezed there are extra fold part, flash trimming cell operation passes through rotation
The circumgyration incision of knife 30 acts on, and extra fold part is pruned.Torque motor 19 and C electric pushrods 27 and driving during this
Motor 29 is interaction relation；While torque motor 19 drives sealing plate 17 gradually to gather, C electric pushrods 27 push supporting block 28
Gradual upward sliding, driving motor 29 drive rotating knife 30 to start to rotate in sleeve 26, when sealing plate 17 gathers completion, C electricity
The impetus of dynamic push rod 27 makes rotating knife 30 prune fold part just.
It is micro- when transfer block 4 is all introduced into delivery pipe 2 during A electric pushrods 3 drive transfer block 4 to move up
Processor controls disconnecting device and starts to work（Work opportunity is by being previously set）, B electric pushrods 14 start, push sliding block 11 exist
High-speed slide in sliding slot 10 cuts off the effect of silk 13 by A at this time, you can cuts off plastic film, realizes to plastic film
Segmentation.In the present embodiment, A cut-out silks 13 and B cut-out silks 33 are respectively at 12 left and right sides of connection strap, can make B electric pushrods
When 14 band movable sliders 11 move back and forth, plastic film can be cut off.
After plastic film cut-out, round bottom polybag is completed by production, at this time the exhaust of microprocessor control B air pumps 23
Direction conversion（Work opportunity is by being previously set）, ventilation opening air blowing, round bottom polybag can be removed at this time.It repeats above-mentioned
Process, you can constantly produce round bottom polybag.
Claims (3)
1. a kind of round bottom plastic bag production device based on blown film techniques, including inflation film manufacturing machine, it is characterised in that：Inflation film manufacturing machine lower end by
Top to bottm has been sequentially distributed supply unit, cutting unit, back cover unit and flash trimming unit；The supply unit and flash trimming unit it
Between be fixedly connected by link；Control circuit is provided on inflation film manufacturing machine；
The supply unit includes the delivery pipe being connected to inflation film manufacturing machine lower end fixing seal；Delivery pipe is vertically arranged；
In delivery pipe, inflation film manufacturing machine lower end is fixed with A electric pushrods；The output end of A electric pushrods straight down and is fixedly connected with conveying
Block；It is cavity structure inside transfer block；Transfer block side wall is evenly distributed with venthole；A air pumps are fixed with inside transfer block；A gas
The a port of pump is located in transfer block, another port passes through transfer block upper end；It is equipped at the air outlet of the inflation film manufacturing machine
Solenoid valve；
The cutting unit includes the working plate for being fixedly attached to conveying pipe outer wall lower end；Distinguish working plate lower end front and rear sides
It is fixed with support bar；Support bar is arranged along horizontal left and right directions；It is provided with sliding slot along its length on the inside of support bar；Sliding in sliding slot
It is connected with sliding block；It is fixed with connection strap between in the middle part of two sliding blocks；On the left of connection strap, A cut-out silks are fixed between two sliding blocks；
Right side is fixed with B electric pushrods in the sliding slot；The output end level of B electric pushrods is fixed to the left and with sliding block；
The back cover unit includes the positioning pipe being vertically arranged；Positioning pipe and delivery pipe corresponding matching；Outside positioning pipe
Substrate is nested and fixed in wall lower end；Substrate lower end is equipped with capping；The capping is corresponding with positioning infratubal port；Capping
It is made of several sealing plates；Sealing plate is distributed uniformly and circumferentially；It is cavity structure inside sealing plate；Sealing plate upper end is evenly distributed with logical
Air holes；Substrate lower end outside has been distributed uniformly and circumferentially torque motor；The output end of torque motor is fixed in the horizontal direction
It is connected with shaft；The sealing plate is corresponded with torque motor；It is connect by shaft with substrate on the outside of sealing plate；Installation inside sealing plate
There is heating wire；The ventilation duct of annular is sealedly connected with across sealing plate；The sealing plate is connected to ventilation duct；Positioning pipe outer wall is fixed
There are B air pumps；The a port of B air pumps is communicated with branch pipe；Branch pipe is connected to ventilation duct；
The flash trimming unit includes the mounting shell of upper end opening；Positioning pipe lower end is fixedly connected with mounting shell internal upper part；Installation
Bottom end is vertically fixed with sleeve in shell；In sleeve, bottom end is fixed with C electric pushrods in mounting shell；C electric pushrods it is defeated
Outlet straight up and is fixedly connected with supporting block；Supporting block is slidably matched in the vertical direction with sleeve；Supporting block upper end is solid
Surely there is driving motor；The output end of driving motor straight up and is fixedly connected with rotating knife；Rotating knife and positioning infratubal port
It is corresponding；
It is provided with microprocessor in the control circuit；A electric pushrods, B electric pushrods, C electric pushrods, solenoid valve, A gas
Pump, B air pumps, torque motor, heating wire and driving motor are connected with microprocessor.
2. the round bottom plastic bag production device according to claim 1 based on blown film techniques, it is characterised in that：In transfer block
End is provided with air inlet；Transfer block lower end is equipped with relief valve.
3. the round bottom plastic bag production device according to claim 1 based on blown film techniques, it is characterised in that：Connection strap is right
Side is fixed with B cut-out silks between two sliding blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710855459.3A CN107344427B (en) | 2017-09-20 | 2017-09-20 | Round bottom plastic bag production device based on blown film techniques |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710855459.3A CN107344427B (en) | 2017-09-20 | 2017-09-20 | Round bottom plastic bag production device based on blown film techniques |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107344427A CN107344427A (en) | 2017-11-14 |
| CN107344427B true CN107344427B (en) | 2018-07-17 |
Family
ID=60257717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710855459.3A Expired - Fee Related CN107344427B (en) | 2017-09-20 | 2017-09-20 | Round bottom plastic bag production device based on blown film techniques |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107344427B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110406171B (en) * | 2019-08-16 | 2020-05-15 | 山东鑫亮包装科技股份有限公司 | Bag making process for packaging plastic film |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8889047B2 (en) * | 2010-01-12 | 2014-11-18 | Greenrock, Ltd. | Paper-like film and process for making it |
| CN203844222U (en) * | 2014-04-25 | 2014-09-24 | 桐乡市红旗塑料包装袋厂 | Packaging bag extruding and film blowing device |
| CN106032054A (en) * | 2015-03-20 | 2016-10-19 | 天津仁义塑料制品有限公司 | Novel high-efficiency film blowing machine |
| CN205291705U (en) * | 2016-01-20 | 2016-06-08 | 石家庄市众帮包装材料有限公司 | Aluminium foil bag round bottom sealing device |
| CN206426534U (en) * | 2016-12-28 | 2017-08-22 | 杭州陆鑫新材料科技有限公司 | A kind of round bottom bag machine for processing and packing bag |
-
2017
- 2017-09-20 CN CN201710855459.3A patent/CN107344427B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN107344427A (en) | 2017-11-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109625700A (en) | A kind of automatic packaging changes a bag intelligent garbage bin | |
| CN201128496Y (en) | Bag opening machine for self-supporting bag | |
| CN209225872U (en) | The intelligent garbage bin that lifting type garbage is automatically drained out | |
| CN101402401A (en) | Automatic continuous vacuum packaging machine for primary lobes tea | |
| CN107344427B (en) | Round bottom plastic bag production device based on blown film techniques | |
| CN107600540B (en) | Packing machine send a bag bag openning body | |
| CN207692559U (en) | A kind of unidirectional full-automatic pack sealing all-in-one machine | |
| CN205266916U (en) | Dry fruit production line | |
| CN219584546U (en) | Automatic large bag outer vacuumizing packaging machine | |
| CN208248612U (en) | It is a kind of for sealing the rotary sealing machine of three edge sealing bags | |
| CN110239767A (en) | A kind of bread automatic bag sealing device | |
| CN206914713U (en) | Automatic packed racking machine | |
| CN109760898B (en) | Packaging system for tea packaging machine | |
| CN210882910U (en) | Vacuum packaging device for silane crosslinked cable material production line | |
| CN104532516A (en) | Dehydrating device | |
| CN211766685U (en) | Wrapping bag flaring mechanism | |
| CN211903591U (en) | Corn starch slurry drying device | |
| CN109724372B (en) | Efficient quartz sand drying device and using method | |
| CN109353139B (en) | Books glue bag apparatus | |
| CN210437429U (en) | Rotary vertical screw feeding packing machine | |
| CN208760039U (en) | A kind of cardboard that edge sealing is neat and plastic shell heat seal device | |
| CN208593537U (en) | A kind of dragon fruit fast package device | |
| CN208360641U (en) | One kind is died of illness poultry harmless treatment packing machine | |
| CN217779117U (en) | Rubber sheet cutting equipment for packing | |
| CN207207260U (en) | Non-return air valve sealing device in a kind of bag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| 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: 20180717 Termination date: 20190920 |