CN107776979A - A kind of plastic packaging bag hot sealing process - Google Patents
A kind of plastic packaging bag hot sealing process Download PDFInfo
- Publication number
- CN107776979A CN107776979A CN201710918793.9A CN201710918793A CN107776979A CN 107776979 A CN107776979 A CN 107776979A CN 201710918793 A CN201710918793 A CN 201710918793A CN 107776979 A CN107776979 A CN 107776979A
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- Prior art keywords
- packaging bag
- plastic packaging
- heat
- sealing
- motor
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
- B65B51/10—Applying or generating heat or pressure or combinations thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
- B65B51/10—Applying or generating heat or pressure or combinations thereof
- B65B2051/105—Heat seal temperature control
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The present patent application belongs to polybag processing technique field, specifically discloses a kind of plastic packaging bag hot sealing process, and plastic packaging bag heat-sealing is operated using heat sealing machine, and the technique comprises the following steps：（1）Start heater, the hydraulic oil in heating devices heat hydraulic column；（2）The distance between top sword and lower push type broach are adjusted, plastic packaging bag is can be placed on workbench；（3）Plastic packaging bag to be sealed is placed on the table, makes position face through hole to be sealed；（4）Start motor, motor is closed after rotating a circle；（5）Examine whether the plastic packaging bag after the completion of heat-sealing meets the requirements；（6）Repeat step when sealing next plastic packaging bag（3）Extremely（5）.Plastic packaging bag is sealed using this programme, heat-sealing pressure that can be according to the thickness adjustment effect of plastic packaging bag on plastic packaging bag.
Description
Technical field
The invention belongs to polybag processing technique field, more particularly to a kind of plastic packaging bag hot sealing process.
Background technology
At present, heat sealing is to apply most universal, most practical a kind of bag mode in compound package material, and it is to utilize
Extraneous various conditions（Such as electrical heating, high frequency voltage or ultrasonic wave）Make plastic bag sealing position is heated to become glutinous stream shape
State, and by certain pressure, two membranes is combined together, intensity is kept after cooling.In general, good heat-sealing effect takes
Certainly whether there is good heat seal strength and intact outward appearance in it.Heat is needed to use when being sealed to polybag
Envelope machine, heat-sealing temperature when heat sealing machine seals to polybag, pressure is sealed, heat-sealing speed and cooling situation etc. are all to final plastics
The heat-sealing effect of bag has important influence.It is under heat-sealing temperature to seal pressure, and heat-sealable material starts to melt, on the face of cohering
Apply pressure, corresponding heat-sealable material contacted with each other, permeate, spread, while also promote the gas on surface to escape, make heat-sealing material
Expect that the intermolecular distance on surface reduces, produce bigger intermolecular force, heat seal strength is improved with this.
Heat-sealing pressure is typically provided by the compression spring on heat sealing machine in the prior art, while in heat-sealing, heat-sealing pressure
Power needs to increase with the increase of polybag thickness, if heat-sealing pressure is smaller, double-layer filmses are difficult to heat seal, will now be difficult to
The bubble being clipped among weld seam is drained, if heat-sealing pressure is excessive, then melted material can be squeezed away, damage toe, cause and be completely cured, because
This when the polybag to different-thickness seals, is adjusted often through the mode for changing compression spring to realize in the prior art
The problem of following often be present in actual use in the purpose of whole heat-sealing pressure, aforesaid way：1st, enter when to different polybags
During row processing, in order to meet the needs of different heat-sealing pressure, it is necessary to which artificial changes different compression springs, this undoubtedly will be very big
Reduction to the processing efficiency of polybag, while also increase the labor intensity of worker；2nd, meet to seal using compression spring
When to sealing the demand of pressure, after a long time use, the elastic performance of one side compression spring weakens compression spring, causes pair
The heat-sealing insufficient pressure of polybag, influences final heat-sealing effect, and another aspect compression spring is also easy in use
There is damage phenomenon.
The content of the invention
The purpose of the present invention is providing a kind of plastic packaging bag hot sealing process, can be adjusted according to the thickness of plastic packaging bag
Save the heat-sealing pressure acted on plastic packaging bag.
In order to achieve the above object, base case of the invention is：A kind of plastic packaging bag hot sealing process, plastics package
Bag heat-sealing is operated using heat sealing machine, and the heat sealing machine includes workbench, driving lever, the first follower lever, the second follower lever, band
Motor and the hydraulic column that cross section is C-shaped, the hydraulic column for moving driving lever rotation are interior filled with hydraulic oil and provided with heater；Hydraulic pressure
First piston is connected with the top of post, the first conduit for allowing hydraulic oil to pass through is connected with first piston, first leads
Pipe is provided with the top sword that inside is provided with cavity；Second piston is connected with the bottom of hydraulic column, is connected in second piston
Having allows the second conduit for passing through of hydraulic oil, and the second conduit is provided with the lower push type broach relative with top sword, be provided with lower push type broach and
The oil pocket of second conduit connection；The workbench is located between top sword and lower push type broach, be provided with workbench allow top sword, under
The through hole that push type broach passes through；The upper surface slide of workbench is connected with pushing block, is fixed with fixed pole on driving lever, and the one of the second follower lever
End is hinged in fixed pole, and the other end is hinged on pushing block；The piston relative with workbench is connected with the side wall of the hydraulic column
Tin, push pedal is connected with piston cylinder, one end of the first follower lever is hinged in push pedal, and the other end is hinged in fixed pole；
The technique comprises the following steps：
（1）Start heater, the hydraulic oil in heating devices heat hydraulic column；
（2）The distance between top sword and lower push type broach are adjusted, plastic packaging bag is can be placed on workbench；
（3）Plastic packaging bag to be sealed is placed on the table, makes position face through hole to be sealed；
（4）Start motor, motor is closed after rotating a circle；Motor first passes through driving lever, the driving push pedal extruding of the first follower lever
Hydraulic oil, top sword, lower push type broach are close to plastic packaging bag, in the presence of top sword and lower push type broach, plastic packaging bag heat-sealing
Complete；Motor continues to move, and motor drives pushing block to move by driving lever, the second follower lever, and pushing block is by the modeling after the completion of heat-sealing
Expect that packaging bag is released；
（5）Examine whether the plastic packaging bag after the completion of heat-sealing meets the requirements；
（6）Repeat step when sealing next plastic packaging bag（3）Extremely（5）.
The operation principle of this base case is：Hydraulic oil is full of hydraulic column, the first conduit, second conduit, top sword
The oil pocket of cavity, lower push type broach, step（1）Middle startup heater, heating devices heat hydraulic oil, makes hydraulic oil rise to fixation
Temperature, hydraulic oil transfer heat to top sword, lower push type broach by heat transfer, top sword, lower push type broach is reached heat-sealing temperature.
Plastic packaging bag is placed on the fixed position of workbench, starts motor, motor is rotated one towards specific direction
Circle and then stopping.When motor rotates, motor driven driving lever together rotates, and driving lever drives the first follower lever to move, and first
Follower lever driving push pedal moves back and forth along piston cylinder.Push pedal first extrudes hydraulic oil, in the presence of hydraulic oil, top sword, pushes
Knife is close to plastic packaging bag, and under the collective effect of top sword and lower push type broach, plastic packaging bag heat-sealing is completed.Motor continues to transport
Dynamic, push pedal gradually resets, and the pressure in piston cylinder is smaller, and hydraulic oil is gradually pumped down in piston cylinder, and top sword, lower push type broach are remote
Workbench, plastic packaging bag is unclamped.While push pedal moves back and forth, motor is pushed away by driving lever, the driving of the second follower lever
Block moves back and forth along workbench, when push pedal extruding hydraulic oil makes top sword, lower push type broach heat-sealing plastic packaging bag, the second follower lever
Pushing block is driven to avoid pushing block interference top sword, lower push type broach heat-sealing plastic packaging bag to the lateral movement close to piston cylinder.Work as push pedal
When reset drives top sword, lower push type broach away from workbench, the second follower lever drives pushing block by the plastic packaging bag after the completion of heat-sealing
Release, complete discharging.After heat-sealing, examine whether plastic packaging bag meets the requirements.When sealing next plastic packaging bag, repeat
Aforesaid operations.
The beneficial effect of this base case is：
1st, under the driving of motor, push pedal moves back and forth, when push pedal moves to the extreme position farthest apart from motor, upper pressure
Knife, lower push type broach seal to plastic packaging bag.Because the amount of hydraulic oil in heat sealing machine is fixed, the thickness of plastic packaging bag
It is bigger, top sword, lower push type broach motion stroke it is smaller, the degree that hydraulic oil is compressed is bigger, thus hydraulic oil by top sword,
The heat-sealing pressure that lower push type broach passes to plastic packaging bag is bigger；Similarly, when the thickness of plastic packaging bag is smaller, hydraulic oil is pressed
The degree of contracting is smaller, and the heat-sealing pressure that plastic packaging bag is subject to is also smaller.This programme enters in the plastic packaging bag to different-thickness
During row heat-sealing, energy adjust automatically acts on the heat-sealing pressure of plastic packaging bag, is not required to artificially be adjusted, effectively increases processing
Efficiency, while heat-sealing hypertonia or deficiency are avoided on influence caused by heat-sealing effect.
2nd, hydraulic oil of hydraulic fluid temperature of the heater near fixed position, heater than other positions
It is high.Under the driving of motor, push pedal moves back and forth, and hydraulic oil does not stop motion therewith in this process, and hydraulic oil is therewith not
Cutout is dynamic, promotes quick progress heat exchange between hydraulic oil, the temperature of hydraulic oil is reached unanimity, avoid hydraulic fluid temperature uneven
Influence heat seal quality.
3rd, hydraulic oil except passing power, drives top sword, the motion of lower push type broach outer, also the biography as heat in this programme
The person of passing, due to the temperature stabilization of hydraulic oil, heat is transmitted by hydraulic oil, heat-sealing effect is good.
4th, drive push pedal and pushing block to move simultaneously using same motor, effectively simplify the structure of heat sealing machine；Heat-sealing is completed
Afterwards, pushing block promotes plastic packaging bag, and the plastic packaging bag after the completion of heat-sealing is released, worker is not required to and individually carries out discharging again, have
Effect improves processing efficiency.
Further, the hydraulic column is provided with the temperature-detecting device for being used for detecting hydraulic fluid temperature；Step（1）In also wrap
The step of including detection hydraulic fluid temperature.Restart motor after the temperature of hydraulic oil reaches heat-sealing temperature, avoid temperature is too low from reaching
Required less than heat-sealing, cause product unqualified.
Further, heat sealing machine also includes the controller for controlled motor intermittent movement, and controller electrically connects with motor；Step
Suddenly（2）In also include controller is configured, enable the controller to according to practical condition controlled motor intermittent movement
Time.Before heat sealing machine, first controller is configured according to practical condition, after controller controlled motor rotates a circle
Stop a period of time, now worker can put next plastic packaging bag to be sealed on the table, and plastic packaging bag is placed
After the completion of, controller controlled motor rotates again.Controller is set so that motor can realize intermittent rotary, make plastic bag
Pack can be sealed continuously, improve processing efficiency.
Further, the heater is heater strip.The effect heated using heater strip is preferable.
Further, the pushing block is iron pushing block, and the lower surface of workbench slidably connects the magnetic that can be attracted each other with pushing block
Iron.In the presence of magnet, pushing block can be made to be fitted in the surface of workbench, avoided in the presence of the second follower lever, pushing block takes off
From workbench.
Further, the workbench is provided with and supplies the reciprocating guide rail of pushing block.The setting of guide rail limits the fortune of pushing block
It is dynamic, avoid pushing block from departing from workbench.
Brief description of the drawings
Fig. 1 is the structural representation of heat sealing machine in the embodiment of the present invention 1；
Fig. 2 is the structural representation of heat sealing machine in the embodiment of the present invention 2.
Embodiment
Below by embodiment, the present invention is further detailed explanation：
Reference in Figure of description 1 to 2 includes：Hydraulic column 1, heater 11, piston cylinder 2, push pedal 21, motor 3, master
Lever 31, the first follower lever 32, the second follower lever 33, workbench 4, through hole 41, first piston 6, the first conduit 61, top sword
62nd, second piston 7, the second conduit 71, lower push type broach 72, magnet 8.
Embodiment 1
A kind of plastic packaging bag hot sealing process, plastic packaging bag heat-sealing are operated using heat sealing machine.As shown in figure 1, heat sealing machine
Including workbench 4, the first follower lever 32, the second follower lever 33, hydraulic column 1, controller, driving lever 31 and motor 3, driving lever 31
One end be connected to the end of the output shaft of motor 3, start motor 3, driving lever 31 rotates therewith.Controller and the electricity of motor 3
Connection, controller are used for the intermittent movement of controlled motor 3, and controller is commercially gained, is used in the present embodiment
Controller is the MAM-280A standard type controllers of Pu Lete Electronics Co., Ltd.s of Shenzhen production.Before heat sealing machine, first root
Controller is configured according to practical condition, controller controlled motor 3 stops a period of time after rotating a circle, then controls again
Motor 3 processed is rotated further.The cross section of hydraulic column 1 is C-shaped, filled with hydraulic oil in hydraulic column 1, is also equipped with heating in hydraulic column 1
Device 11, heater 11 is heater strip in the present embodiment, and hydraulic oil can be heated by starting heater strip；Also set on hydraulic column 1
There is temperature-detecting device, temperature-detecting device is used for the temperature for detecting hydraulic oil, and the temperature-detecting device can be thermometer, temperature
Detector etc..First piston 6 is connected with the top of hydraulic column 1, is connected with the first conduit 61 on first piston 6, first
It is connected with the internal top sword 62 for being provided with cavity on conduit 61, the hydraulic oil in hydraulic column 1 can be entered by the first conduit 61
Cavity.Second piston 7 is connected with the bottom of hydraulic column 1, the second conduit 71, the second conduit are connected with second piston 7
Lower push type broach 72 is connected with 71, lower push type broach 72 is oppositely arranged with top sword 62, is provided with lower push type broach 72 and is connected with the second conduit 71
Oil pocket, the hydraulic oil in compression leg can enter oil pocket by the second conduit 71.Workbench 4 is located at top sword 62 and lower push type broach 72
Between, through hole 41 is provided with workbench 4, top sword 62, lower push type broach 72 can pass through through hole 41.The upper surface of workbench 4 is provided with
Guide rail and pushing block is slidably connected, pushing block can move back and forth along guide rail, and the setting of guide rail limits the motion of pushing block, avoids
Pushing block departs from workbench 4.Fixed pole is fixed with driving lever 31, one end of the second follower lever 33 is hinged in fixed pole, other end hinge
It is connected on pushing block.The piston cylinder 2 relative with workbench 4 is connected with the side wall of hydraulic column 1, is connected with and pushes away in piston cylinder 2
Plate 21, one end of the first follower lever 32 are hinged in push pedal 21, and the other end is hinged in fixed pole.
Plastic packaging bag hot sealing process comprises the following steps：
（1）Start heater 11, heater 11 heats the hydraulic oil in hydraulic column 1, observes and is shown on temperature-detecting device
Hydraulic oil temperature；
（2）The distance between top sword 62 and lower push type broach 72 are adjusted, plastic packaging bag is can be placed on workbench 4；
（3）Plastic packaging bag to be sealed is placed on workbench 4, makes position face through hole 41 to be sealed；
（4）Controller is configured according to practical condition, the intermittent movement of controller controlled motor 3, the time of interval is
Next plastic packaging bag to be sealed is placed on the time required on workbench 4 by worker.Start motor 3, motor 3 first passes through master
Lever 31, the driving push pedal 21 of the first follower lever 32 extrude hydraulic oil, and top sword 62, lower push type broach 72 are close to plastic packaging bag,
In the presence of top sword 62 and lower push type broach 72, plastic packaging bag heat-sealing is completed；Motor 3 continues to move, and motor 3 passes through driving lever
31st, the motion of the second follower lever 33 driving pushing block, pushing block release the plastic packaging bag after the completion of heat-sealing；
（5）Examine whether the plastic packaging bag after the completion of heat-sealing meets the requirements；
（6）Repeat step when sealing next plastic packaging bag（3）Extremely（5）.
Embodiment 2
The difference of embodiment 2 and embodiment 1 is：As shown in Fig. 2 it is not provided with guide rail on workbench 4；Pushing block is designed as into iron to push away
Block, magnet 8 is slidably connected in the lower surface of workbench 4, the magnet 8 can attract each other with pushing block.In the presence of magnet 8,
Pushing block can be made to be fitted in the surface of workbench 4, avoided in the presence of the second follower lever 33, pushing block departs from workbench 4.
Above-described is only embodiments of the invention, and the general knowledge such as known concrete structure and characteristic is not made herein in scheme
Excessive description., without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art
Several modifications and improvements are made, these should also be considered as protection scope of the present invention, and these are implemented all without the influence present invention
Effect and practical applicability.The scope of protection required by this application should be based on the content of the claims, in specification
The records such as embodiment can be used for the content for explaining claim.
Claims (6)
1. a kind of plastic packaging bag hot sealing process, it is characterised in that plastic packaging bag heat-sealing is operated using heat sealing machine, institute
Stating heat sealing machine includes workbench, driving lever, the first follower lever, the second follower lever, the motor for driving driving lever rotation and cross section
C-shaped hydraulic column, hydraulic column are interior filled with hydraulic oil and provided with heater；The first work is connected with the top of hydraulic column
Fill in, the first conduit for allowing hydraulic oil to pass through is connected with first piston, the first conduit is provided with the upper pressure that inside is provided with cavity
Knife；Second piston is connected with the bottom of hydraulic column, the second conduit for allowing hydraulic oil to pass through is connected with second piston,
Second conduit is provided with the lower push type broach relative with top sword, and the oil pocket connected with the second conduit is provided with lower push type broach；The work
Platform is located between top sword and lower push type broach, and the through hole for allowing top sword, lower push type broach to pass through is provided with workbench；The upper table of workbench
Face slidably connects pushing block, and fixed pole is fixed with driving lever, and one end of the second follower lever is hinged in fixed pole, and the other end is hinged on
On pushing block；The piston cylinder relative with workbench is connected with the side wall of the hydraulic column, push pedal is connected with piston cylinder, the
One end of one follower lever is hinged in push pedal, and the other end is hinged in fixed pole；
The technique comprises the following steps：
（1）Start heater, the hydraulic oil in heating devices heat hydraulic column；
（2）The distance between top sword and lower push type broach are adjusted, plastic packaging bag is can be placed on workbench；
（3）Plastic packaging bag to be sealed is placed on the table, makes position face through hole to be sealed；
（4）Start motor, motor is closed after rotating a circle；Motor first passes through driving lever, the driving push pedal extruding of the first follower lever
Hydraulic oil, top sword, lower push type broach are close to plastic packaging bag, in the presence of top sword and lower push type broach, plastic packaging bag heat-sealing
Complete；Motor continues to move, and motor drives pushing block to move by driving lever, the second follower lever, and pushing block is by the modeling after the completion of heat-sealing
Expect that packaging bag is released；
（5）Examine whether the plastic packaging bag after the completion of heat-sealing meets the requirements；
（6）Repeat step when sealing next plastic packaging bag（3）Extremely（5）.
2. a kind of plastic packaging bag hot sealing process as claimed in claim 1, it is characterised in that the hydraulic column, which is provided with, to be used
In the temperature-detecting device of detection hydraulic fluid temperature；Step（1）In also include detection hydraulic fluid temperature the step of.
3. a kind of plastic packaging bag hot sealing process as claimed in claim 1, it is characterised in that heat sealing machine also includes being used to control
The controller of motor intermittent movement processed, controller electrically connect with motor；Step（2）In also include controller is configured, make
Controller can be according to the time of practical condition controlled motor intermittent movement.
4. a kind of plastic packaging bag hot sealing process as claimed in claim 1, it is characterised in that the heater is heating
Silk.
5. a kind of plastic packaging bag hot sealing process as claimed in claim 1, it is characterised in that the pushing block is iron pushing block, work
The lower surface for making platform slidably connects the magnet that can be attracted each other with pushing block.
6. a kind of plastic packaging bag hot sealing process as claimed in claim 1, it is characterised in that the workbench, which is provided with, to be supplied
The reciprocating guide rail of pushing block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710918793.9A CN107776979B (en) | 2017-09-30 | 2017-09-30 | A kind of plastic packaging bag hot sealing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710918793.9A CN107776979B (en) | 2017-09-30 | 2017-09-30 | A kind of plastic packaging bag hot sealing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107776979A true CN107776979A (en) | 2018-03-09 |
| CN107776979B CN107776979B (en) | 2019-06-18 |
Family
ID=61434144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710918793.9A Expired - Fee Related CN107776979B (en) | 2017-09-30 | 2017-09-30 | A kind of plastic packaging bag hot sealing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107776979B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111993700A (en) * | 2020-08-07 | 2020-11-27 | 武汉市新洲三角塑料制品有限公司 | Continuous production process of plastic freshness protection package |
| CN112172255A (en) * | 2020-09-28 | 2021-01-05 | 重庆鑫斗包装材料有限公司 | Bag making device for packaging |
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| GB2010740A (en) * | 1977-12-06 | 1979-07-04 | Tscheulin Aluminium | Closing container openings |
| US4622798A (en) * | 1984-11-27 | 1986-11-18 | Orihiro Co., Ltd. | Sealing mechanism for a packing machine |
| CN2454287Y (en) * | 2000-12-19 | 2001-10-17 | 瑞安市天成包装机械有限公司 | Cut dust-collecting and enclosing mechanism of medicinal liquid filling machine |
| CN202138574U (en) * | 2011-06-10 | 2012-02-08 | 湖南博伦多液压设备有限公司 | Hydraulic system of double-workstation paper roll package machine |
| CN204998864U (en) * | 2015-09-06 | 2016-01-27 | 深圳市闪光辉科技有限公司 | Adjustable nodal pattern solar panel's automatic capper |
| CN205602230U (en) * | 2016-04-19 | 2016-09-28 | 象山仲堇生物科技有限公司 | Novel traditional chinese medicine medicinal material bag press seal device |
-
2017
- 2017-09-30 CN CN201710918793.9A patent/CN107776979B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2010740A (en) * | 1977-12-06 | 1979-07-04 | Tscheulin Aluminium | Closing container openings |
| US4622798A (en) * | 1984-11-27 | 1986-11-18 | Orihiro Co., Ltd. | Sealing mechanism for a packing machine |
| CN2454287Y (en) * | 2000-12-19 | 2001-10-17 | 瑞安市天成包装机械有限公司 | Cut dust-collecting and enclosing mechanism of medicinal liquid filling machine |
| CN202138574U (en) * | 2011-06-10 | 2012-02-08 | 湖南博伦多液压设备有限公司 | Hydraulic system of double-workstation paper roll package machine |
| CN204998864U (en) * | 2015-09-06 | 2016-01-27 | 深圳市闪光辉科技有限公司 | Adjustable nodal pattern solar panel's automatic capper |
| CN205602230U (en) * | 2016-04-19 | 2016-09-28 | 象山仲堇生物科技有限公司 | Novel traditional chinese medicine medicinal material bag press seal device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111993700A (en) * | 2020-08-07 | 2020-11-27 | 武汉市新洲三角塑料制品有限公司 | Continuous production process of plastic freshness protection package |
| CN112172255A (en) * | 2020-09-28 | 2021-01-05 | 重庆鑫斗包装材料有限公司 | Bag making device for packaging |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107776979B (en) | 2019-06-18 |
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