CN110466203A - A kind of unidirectional film valve point ironing device of packaging bag - Google Patents
A kind of unidirectional film valve point ironing device of packaging bag Download PDFInfo
- Publication number
- CN110466203A CN110466203A CN201910896519.5A CN201910896519A CN110466203A CN 110466203 A CN110466203 A CN 110466203A CN 201910896519 A CN201910896519 A CN 201910896519A CN 110466203 A CN110466203 A CN 110466203A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- roller
- point
- cutter
- slide 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.)
- Pending
Links
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 25
- 238000010409 ironing Methods 0.000 title claims abstract description 12
- 206010053615 Thermal burn Diseases 0.000 claims abstract description 23
- 230000001105 regulatory effect Effects 0.000 claims abstract description 19
- 238000009835 boiling Methods 0.000 claims abstract description 16
- 238000007599 discharging Methods 0.000 claims abstract description 15
- 238000005056 compaction Methods 0.000 claims description 2
- 239000012528 membrane Substances 0.000 abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 239000000463 material Substances 0.000 description 19
- 229920006280 packaging film Polymers 0.000 description 7
- 239000012785 packaging film Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000009490 roller compaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/02—Feeding or positioning sheets, blanks or webs
- B31B70/10—Feeding or positioning webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/14—Cutting, e.g. perforating, punching, slitting or trimming
- B31B70/16—Cutting webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/60—Uniting opposed surfaces or edges; Taping
- B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/74—Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/74—Auxiliary operations
- B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
- B31B70/84—Forming or attaching means for filling or dispensing contents, e.g. valves or spouts
- B31B70/85—Applying patches or flexible valve inserts, e.g. applying film-like valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/74—Auxiliary operations
- B31B70/92—Delivering
- B31B70/94—Delivering singly or in succession
Landscapes
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Making Paper Articles (AREA)
Abstract
The present invention relates to a kind of unidirectional film valve point ironing devices of packaging bag, it is characterized in that it includes rack, discharging frame, the first deflector roll, the second deflector roll, regulating roller, adjusting cylinder, adjusts swing arm, discharge roller, pressure roller, motor, pressure roller cylinder, lower cutter, upper cutter, cutter slide plate, guide rail, slide plate cylinder, puts and scald the boiling hot block of cylinder, upper point, the boiling hot block of lower point, the first clamping cylinder, the second clamping cylinder, connecting plate, compact heap, compress bottom plate, support plate and adjusting screw rod.The present invention has the advantages that serialization point can be carried out to the unidirectional membrane valve in packaging bag to scald production and improve packaging bag production efficiency.
Description
Technical field
The present invention relates to a kind of ironing device more particularly to a kind of unidirectional film valve point ironing devices of packaging bag.
Background technique
The packaging bag equipped with unidirectional membrane valve needs first to iron unidirectional film valve point in process of production single at present
On packaging bag material bag, then point is scalded again and is made after having unidirectional membrane valve packaging bag material bag to be bonded with another packaging bag material bag hot pressure
At packaging bag, existing unidirectional its structure of film valve point ironing device of packaging bag is more complicated, and serialization point scalds production effect not
It is good, to influence the production efficiency of entire packaging bag.
Summary of the invention
For disadvantage mentioned above, unidirectional membrane valve in packaging bag can be carried out continuously the purpose of the present invention is to provide a kind of
Change point to scald production and improve the unidirectional film valve point ironing device of packaging bag of packaging bag production efficiency.
Technology contents of the invention are a kind of unidirectional film valve point ironing device of packaging bag, it is characterized in that it includes rack, puts
Expect frame, the first deflector roll, the second deflector roll, regulating roller, adjust cylinder, adjust swing arm, discharge roller, pressure roller, motor, pressure roller cylinder, under
Cutter, cutter slide plate, guide rail, slide plate cylinder, is put and scalds the boiling hot block of cylinder, upper point, the boiling hot block of lower point, by air cylinder, clamping gas upper cutter
Cylinder, compact heap, compresses bottom plate, support plate and adjusting screw rod at connecting plate；
Discharging frame is arranged in rack back side top, and a regulating roller is equipped on front side of discharging frame,
Regulating roller two sides are connect with one end of an adjusting swing arm respectively, and the other end for adjusting swing arm is connect with an adjusting cylinder；In
Several first guide rails are equipped between discharging frame and regulating roller；
A discharge roller is equipped in the rack on front side of regulating roller, discharge roller is connect with motor drive；Pressure roller is arranged on discharge roller
Side, pressure roller two sides are connect with a pressure roller cylinder respectively, and pressure roller cylinder is used to adjust the compaction degree between pressure roller and discharge roller；Going out
Expect to be equipped with several second guide rails between roller and regulating roller；
Support plate is horizontally set in the rack on front side of discharge roller, and two parallel guide rails are vertically set on the rack below support plate
On,
Cutter slide plate slides are arranged on guide rail, and the lower end of cutter slide plate, cutter slide plate upper end and slide plate gas is arranged in upper cutter
Cylinder one end is fixedly connected, and the slide plate cylinder other end is fixed on the supporting plate；Lower cutter is fixed at the machine below cutter slide plate
On frame, lower cutter is corresponding with upper cutter；
Cylinder is scalded by air cylinder and point to be vertically disposed in front of slide plate cylinder in the support plate of two sides,
The boiling hot cylinder lower end of point is fixedly connected with point and scalds block；Adjusting screw rod is arranged in the rack that upper point scalds below block, and lower point scalds block
It is arranged on adjusting screw rod, it is corresponding with the boiling hot block of upper point that lower point scalds block；
It compresses bottom plate to be fixedly connected on by air cylinder lower end, clamping cylinder is vertically and fixedly arranged at by connecting plate by air cylinder
Side, compact heap are fixedly connected on clamping cylinder lower end；Clamping cylinder can be driven vertically to move by connecting plate by air cylinder.
For convenience of the output of one-way ventilating film bag, side is respectively equipped with a conveying platform before and after discharge roller.
The present invention compared with prior art possessed by advantage are as follows: the present invention can be by the point of the quick serialization of unidirectional membrane valve
On the packaging film material bag for ironing production packaging bag, to substantially increase the production efficiency of packaging bag.
Detailed description of the invention
Fig. 1 is stereoscopic schematic diagram of the invention.
Fig. 2 is sectional perspective schematic diagram of the invention.
Fig. 3 is another sectional perspective schematic diagram of the invention.
Fig. 4 uses schematic diagram for of the invention.
Specific embodiment
As shown in Figure 1, Figure 2 and Figure 3, the unidirectional film valve point ironing device of a kind of packaging bag, it is characterized in that it include rack 1,
Discharging frame 2, the first deflector roll 3, the second deflector roll 30, regulating roller 4, adjust cylinder 5, adjust swing arm 6, discharge roller 7, pressure roller 8, motor 9,
Pressure roller cylinder 10, upper cutter 12, cutter slide plate 13, guide rail 14, slide plate cylinder 15, is put and scalds the boiling hot block of cylinder 16, upper point lower cutter 11
17, lower point scalds block 18, by air cylinder 19, clamping cylinder 20, connecting plate 21, compact heap 22, compression bottom plate 23, support plate 24, tune
It saves screw rod 25, adjust shaft 26, limited block 27, transmission sack made by leather 28 and conveying platform 29；
Discharging frame 2 is arranged in 1 back side top of rack, and a regulating roller 4 is equipped on front side of discharging frame 2,
4 two sides of regulating roller are connect with one end of an adjusting swing arm 6 respectively, are adjusted the other end of swing arm 6 and one and are adjusted the company of cylinder 5
It connects；It adjusts swing arm 6 and is rotatably connected in rack 1 by adjusting shaft 26, the setting of limited block 27 is adjusting swing arm 6 and adjusting cylinder
In the rack of 5 junctions, limited block 27 is used to limit the amplitude of fluctuation for adjusting swing arm 6；
Several first guide rails 3 are equipped between discharging frame 2 and regulating roller 4；
A discharge roller 7 is equipped in the rack 1 of 4 front side of regulating roller, discharge roller 7 is sequentially connected by transmission sack made by leather 28 and motor 9；
Pressure roller 8 is arranged above discharge roller 7, and 8 two sides of pressure roller are connect with a pressure roller cylinder 10 respectively, and pressure roller cylinder 10 is for adjusting pressure roller
Compaction degree between 8 and discharge roller 7；Several second guide rails 30 also are provided between discharge roller 7 and regulating roller 4；Motor 9 and pressure roller
Cylinder 10 is arranged in rack 1；A conveying platform 29 is respectively equipped in 7 front and back side of discharge roller；On conveying platform 29 and discharge roller 7
End face is parallel；
Support plate 24 is horizontally set in the rack 1 of 7 front side of discharge roller, and two parallel guide rails 14 are vertically set under support plate 24
In the rack 1 of side,
Cutter slide plate 13 is slidably arranged on guide rail 14, and upper cutter 12 is arranged in the lower end of cutter slide plate 13, on cutter slide plate 13
End is fixedly connected with 15 one end of slide plate cylinder, and 15 other end of slide plate cylinder is fixed in support plate 24；Lower cutter 11 is fixedly installed
In rack 1 below cutter slide plate 13, lower cutter 11 is corresponding with upper cutter 12；
Cylinder 16 is scalded by air cylinder 19 and point to be vertically disposed in the support plate 24 of 15 front two sides of slide plate cylinder,
Boiling hot 16 lower end of cylinder of point is fixedly connected with point and scalds block 17；Adjusting screw rod 25 is arranged in the rack 1 that upper point scalds below block 17,
Lower point scalds block 18 and is arranged on adjusting screw rod 25, and boiling hot 18 pieces of lower point corresponding with the boiling hot block 17 of upper point；
Bottom plate 23 is compressed to be fixedly connected on by 19 lower end of air cylinder, clamping cylinder 20 by connecting plate 21 be vertically and fixedly arranged at by
19 inside of air cylinder, compact heap 22 are fixedly connected on 20 lower end of clamping cylinder；By air cylinder 19 folder can be driven by connecting plate 21
Cylinder 20 is taken vertically to move.
The working principle of the invention, as shown in figure 4, the present invention is placed in the front end conveying device of production packaging bag,
Pass through the upper packaging film material bag 31 for producing packaging bag in upper and lower of the invention respectively with lower packaging film material bag 32；It will be coiled
Unidirectional membrane valve material bag 33 is placed on discharging frame 2, and the unidirectional membrane valve material bag 33 released from discharging frame 2 is through the first deflector roll 3 and adjusts
It saves roller 4 and enters the second deflector roll 30, unidirectional membrane valve material bag 33 is horizontal after the second deflector roll 30 to be entered from conveying platform 29
Between discharge roller 7 and pressure roller 8, unidirectional membrane valve material bag 33 is pressed on discharging under the action of pressure roller cylinder 10 is downward by pressure roller 8
On roller 7, unidirectional membrane valve material is sent to 33 after lower cutter 11 and upper cutter 12 under the rotation of motor 9 and is transported to by discharge roller 7
It compresses between bottom plate 23 and compact heap 22, and is in one side side of unidirectional membrane valve material bag 33 and compresses bottom plate 23 and compact heap
Between 22, then compact heap 22 downwards presss from both sides the avris portion of membrane valve material bag 33 unidirectional under drive under the action of clamping cylinder 20
Firmly, then slide plate cylinder 15 drives cutter slide plate 13 and upper cutter 12 to move down, so that upper cutter 12 be made to cut with lower cutter 11
Break unidirectional membrane valve material bag 33, drives the unidirectional membrane valve cut to be on lower packaging film material bag 32 downwards by air cylinder 19
Then side puts boiling hot cylinder 16 and moves down, so that scalding block 17 by upper point scalds the unidirectional membrane valve quilt that block 18 will be cut with lower point
Point irons lower packaging film material bag 32, then scalds cylinder 16 and is moved upward to that the boiling hot block 17 of point is driven to reset, clamping cylinder 20 is upward
It is mobile that compact heap 22 is driven to reset, it is moved upward to that clamping cylinder 20 is driven to reset by air cylinder 19, slide plate cylinder 15 drives
Cutter slide plate 13 and upper cutter 12 move up, and upper cutter 12 resets, then upper packaging film material bag 31 and lower packaging film material bag 32
Again simultaneously one packaging bag width of stepping distance, then there is discharge roller 7 to export unidirectional membrane valve material bag 33 again, so repeat
Can the point of the unidirectional membrane valve of progress of serialization scald production.
Claims (2)
1. a kind of unidirectional film valve point ironing device of packaging bag, it is characterized in that it includes rack, discharging frame, the first deflector roll, second leads
Roller, regulating roller, adjust cylinder, adjust swing arm, discharge roller, pressure roller, motor, pressure roller cylinder, lower cutter, upper cutter, cutter slide plate,
Guide rail, slide plate cylinder are put and scald the boiling hot block of cylinder, upper point, lower point boiling hot block, the first clamping cylinder, the second clamping cylinder, connecting plate, pressure
Tight block compresses bottom plate, support plate and adjusting screw rod；
Discharging frame is arranged in rack back side top, and a regulating roller is equipped on front side of discharging frame,
Regulating roller two sides are connect with one end of an adjusting swing arm respectively, and the other end for adjusting swing arm is connect with an adjusting cylinder；In
Several first guide rails are equipped between discharging frame and regulating roller；
A discharge roller is equipped in the rack on front side of regulating roller, discharge roller is connect with motor drive；Pressure roller is arranged on discharge roller
Side, pressure roller two sides are connect with a pressure roller cylinder respectively, and pressure roller cylinder is used to adjust the compaction degree between pressure roller and discharge roller；Going out
Expect to be equipped with several second guide rails between roller and regulating roller；
Support plate is horizontally set in the rack on front side of discharge roller, and two parallel guide rails are vertically set on the rack below support plate
On,
Cutter slide plate slides are arranged on guide rail, and the lower end of cutter slide plate, cutter slide plate upper end and slide plate gas is arranged in upper cutter
Cylinder one end is fixedly connected, and the slide plate cylinder other end is fixed on the supporting plate；Lower cutter is fixed at the machine below cutter slide plate
On frame, lower cutter is corresponding with upper cutter；
First clamping cylinder and point scald cylinder and are vertically disposed in front of slide plate cylinder in the support plate of two sides,
The boiling hot cylinder lower end of point is fixedly connected with point and scalds block；Adjusting screw rod is arranged in the rack that upper point scalds below block, and lower point scalds block
It is arranged on adjusting screw rod, it is corresponding with the boiling hot block of upper point that lower point scalds block；
It compresses bottom plate and is fixedly connected on the first clamping cylinder lower end, the second clamping cylinder is vertically and fixedly arranged at the by connecting plate
On the inside of one clamping cylinder, compact heap is fixedly connected on the second clamping cylinder lower end；First clamping cylinder can be driven by connecting plate
Second clamping cylinder vertically moves.
2. the unidirectional film valve point ironing device of a kind of packaging bag according to claim 1, it is characterized in that it further includes that conveying is flat
Platform, side is respectively equipped with a conveying platform before and after discharge roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910896519.5A CN110466203A (en) | 2019-09-23 | 2019-09-23 | A kind of unidirectional film valve point ironing device of packaging bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910896519.5A CN110466203A (en) | 2019-09-23 | 2019-09-23 | A kind of unidirectional film valve point ironing device of packaging bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110466203A true CN110466203A (en) | 2019-11-19 |
Family
ID=68516495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910896519.5A Pending CN110466203A (en) | 2019-09-23 | 2019-09-23 | A kind of unidirectional film valve point ironing device of packaging bag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110466203A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4341522A (en) * | 1980-05-05 | 1982-07-27 | Gaubert R J | Method and apparatus for making pouches with dispensing fittings |
| CN203267286U (en) * | 2013-04-25 | 2013-11-06 | 汕头市长诚包装机械有限公司 | Internal patching device of packing bag making machine |
| CN204551113U (en) * | 2015-04-03 | 2015-08-12 | 温州宁泰机械有限公司 | Woven bag cutting conveyer |
| CN105818446A (en) * | 2016-05-24 | 2016-08-03 | 江阴利尔包装有限公司 | Packaging bag making machine for automobile seat |
| CN107244100A (en) * | 2017-07-27 | 2017-10-13 | 广州通泽机械有限公司 | A kind of pack for liquids fills mouth reinforcement diaphragm and scalds label apparatus and its technique |
| CN206598576U (en) * | 2017-02-10 | 2017-10-31 | 台州市路桥瑞康家庭用品厂 | The point breaking mechanism of plastic bag making machine |
| CN207291107U (en) * | 2017-09-15 | 2018-05-01 | 广州通泽机械有限公司 | A kind of packaging bag fills mouth hot pressure upper die mechanism |
| CN207416129U (en) * | 2017-10-29 | 2018-05-29 | 佛山市顺德区华众实业有限公司 | Air bleeding valve hot press improved structure |
| CN108177390A (en) * | 2017-12-29 | 2018-06-19 | 江苏飞鹿重工机械制造有限公司 | Non-woven bag process equipment with boiling hot handle device |
| CN109591376A (en) * | 2019-01-24 | 2019-04-09 | 佛山市天正机械有限公司 | Bag pad pasting heat seal device |
| CN208946754U (en) * | 2018-07-27 | 2019-06-07 | 李善斌 | A kind of woven bag cutting transmission device |
| CN210553327U (en) * | 2019-09-23 | 2020-05-19 | 江阴市汇通印刷包装机械有限公司 | Packaging bag one-way film valve point-scalding device |
-
2019
- 2019-09-23 CN CN201910896519.5A patent/CN110466203A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4341522A (en) * | 1980-05-05 | 1982-07-27 | Gaubert R J | Method and apparatus for making pouches with dispensing fittings |
| CN203267286U (en) * | 2013-04-25 | 2013-11-06 | 汕头市长诚包装机械有限公司 | Internal patching device of packing bag making machine |
| CN204551113U (en) * | 2015-04-03 | 2015-08-12 | 温州宁泰机械有限公司 | Woven bag cutting conveyer |
| CN105818446A (en) * | 2016-05-24 | 2016-08-03 | 江阴利尔包装有限公司 | Packaging bag making machine for automobile seat |
| CN206598576U (en) * | 2017-02-10 | 2017-10-31 | 台州市路桥瑞康家庭用品厂 | The point breaking mechanism of plastic bag making machine |
| CN107244100A (en) * | 2017-07-27 | 2017-10-13 | 广州通泽机械有限公司 | A kind of pack for liquids fills mouth reinforcement diaphragm and scalds label apparatus and its technique |
| CN207291107U (en) * | 2017-09-15 | 2018-05-01 | 广州通泽机械有限公司 | A kind of packaging bag fills mouth hot pressure upper die mechanism |
| CN207416129U (en) * | 2017-10-29 | 2018-05-29 | 佛山市顺德区华众实业有限公司 | Air bleeding valve hot press improved structure |
| CN108177390A (en) * | 2017-12-29 | 2018-06-19 | 江苏飞鹿重工机械制造有限公司 | Non-woven bag process equipment with boiling hot handle device |
| CN208946754U (en) * | 2018-07-27 | 2019-06-07 | 李善斌 | A kind of woven bag cutting transmission device |
| CN109591376A (en) * | 2019-01-24 | 2019-04-09 | 佛山市天正机械有限公司 | Bag pad pasting heat seal device |
| CN210553327U (en) * | 2019-09-23 | 2020-05-19 | 江阴市汇通印刷包装机械有限公司 | Packaging bag one-way film valve point-scalding device |
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