CN103144292B - Uniaxial PP (Polypropylene) plastic tension panel threading system - Google Patents
Uniaxial PP (Polypropylene) plastic tension panel threading system Download PDFInfo
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- CN103144292B CN103144292B CN201310088971.1A CN201310088971A CN103144292B CN 103144292 B CN103144292 B CN 103144292B CN 201310088971 A CN201310088971 A CN 201310088971A CN 103144292 B CN103144292 B CN 103144292B
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- sprocket wheel
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- 239000004033 plastic Substances 0.000 title claims abstract description 25
- 229920003023 plastic Polymers 0.000 title claims abstract description 25
- 239000004743 Polypropylene Substances 0.000 title abstract 5
- -1 Polypropylene Polymers 0.000 title abstract 3
- 229920001155 polypropylene Polymers 0.000 title abstract 3
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 40
- 239000003638 chemical reducing agent Substances 0.000 claims description 13
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000012423 maintenance Methods 0.000 claims description 4
- 238000005476 soldering Methods 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 206010053615 Thermal burn Diseases 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 238000007665 sagging Methods 0.000 description 4
- 230000003712 anti-aging effect Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
Abstract
The invention provides a uniaxial PP (polypropylene) plastic tension panel threading system, belonging to the field of uniaxial plastic geogrid tension equipment and mainly being used for threading of polypropylene plastic uniaxial tension panel before entering a multi-roller stretcher for tension. The system is provided with a front conveying mechanism and a rear conveying mechanism, wherein tension equipment can run circularly, synchronously and steadily along with the front conveying mechanism and the rear conveying mechanism through the transmission of a chain, so that threading of the panel is realized, and therefore, the system has the advantages of saving time and labor, being high efficient and energy-saving, greatly improving the production efficiency of a product and the production safety, and the like, especially when the system is in normal use, the panel is broken or a machine stops running, the system plays key roles on not affecting the use and the operation of the equipment, saving energy and lowering the rejection rate of a finished product is, and simultaneously, a human casualty accident and a human body scald accident are prevented.
Description
Technical field
The invention belongs to Plastics Geogrids simple tension apparatus field, especially a kind of PP plastics simple tension sheet material lacing film system.
Background technology
PP Plastics Geogrids be through stretch formed there is net material that is square or rectangle, it is through extruding punching on the sheet material made, then implements orientation stretching in a heated condition.Because the macromolecule of PP GSZ polymer in the mill with heating extension process and rearrange orientation, can strengthen the connecting forces between strand, reach the object improving its intensity.Its percentage elongation only has 10% ~ 15% of raw sheet material.If add the anti-aging materials such as carbon black in GSZ, the endurance quality such as acidproof, alkaline-resisting, corrosion-resistant and anti-aging preferably can be made it have.
In prior art, the equipment produced for unidirectional PP GSZ stretching sheet material is multiple roll stretching-machine, the stretching of this equipment to sheet material is than the stretching showing GSZ by multiple roll stretching-machine speed each other, before stretching, the sheet material had openning hole penetrates between the acting surface of multiple pressure roller by needs one by one in turn, then could stretch by starting device, and if sheet material fracture in drawing process, also need to re-start corresponding operating.
At present, domestic is still blank for PP plastics simple tension sheet material lacing film system, the effective solution of neither one, common way is: below multiple roll stretching-machine, arrange melt pit, cover plate is put above melt pit, when needs are from multiple roll stretching-machine lacing film, operating personnel must dress proximity suit, oven interior is entered by the actuating doors be arranged on multiple roll stretching-machine baking oven, due to before multiple roll stretching-machine lacing film, must heat in advance with conduction oil in multiple roll roller inside, oven interior blower fan is blown into baking oven airduct heat, the temperature now produced with roller surface in baking oven is generally 140-150 degrees centigrade, then the melt pit cover plate opened bottom multiple roll stretching-machine enters melt pit, restart multiple roll stretching-machine, in order to lacing film is convenient, first will from S-type through pull rope between the upper lower compression roller of multiple roll stretching-machine, send from the anterior entrance of baking oven, pull rope again with punching after sheet material be connected firmly, start multiple roll stretching-machine, sheet material is made slowly to enter between the front lower drive roll of multiple roll stretching-machine and front pressure roller, situation is imported according to sheet material, manually carry out hand guided sheet material, this kind of lacing film method exists dangerous greatly, easy generation human casualty accident and health are scalded, simultaneously in order to lacing film equipment needs to shut down, waste very macro-energy, and need secondary to start shooting, and oven interior interior to multiple roll roller is heated again.This kind of lacing film method, time-consuming, increase labor strength, personal injury easily occurs and wastes energy.
Summary of the invention
For solving the deficiencies in the prior art; the object of the present invention is to provide a kind of PP plastics simple tension sheet material lacing film system; be mainly used in the sheet material lacing film work of PP plastics simple tension sheet material before entering multiple roll stretching-machine and stretching; this system have easy to operate, save labor; safety coefficient is high, and stretching-machine occurs disconnected plate phenomenon or shut down all not affecting its use and operation in drawing process.
For achieving the above object, the present invention is by the following technical solutions: PP plastics simple tension sheet material lacing film system, comprise insulation frame 10, multiple roll stretching-machine reductor 22 is equipped with in described insulation frame 10 inside, it is characterized in that, also comprise speed reducer base 23, front conveyor frame 17, stretching-machine frame, rear conveying frame 6, described reductor 22 is installed on speed reducer base 23, speed reducer base 23 is formed by square tubes soldering, and reductor 22 output shaft is equipped with drive sprocket 21; Described front conveyor frame 17 is welded by channel-section steel, front-end bearing pedestal 19 front conveyor frame 17 is equipped with, front conveyance axle 25 front-end bearing pedestal 19 is equipped with, the rear side of front conveyance axle 25 is equipped with front simply connected sprocket wheel 24, duplicate sprocket 18 is equipped with in front side, described front conveyance axle 25 is connected by chain drive-belt 20 with reductor 22, carries out power transmission between front conveyance axle 25 and reductor 22 by chain drive-belt 20; Described multiple roll stretching-machine front lower drive roll both sides roller end face is fixed with sprocket wheel 13, and the driven roll 11 in the middle of described multiple roll stretching-machine and the drive roll 12 roller both sides end face except front lower drive roll are all fixed with L-type chain gathering sill 5; Described rear conveying frame 6 is welded by channel-section steel, its top is provided with rear bearing block 7, described rear bearing block 7 is equipped with inter-axle shaft 4, rear simply connected sprocket wheel 8 is equipped with in the both sides of inter-axle shaft 4, and rear simply connected sprocket wheel 8 is driven running after being connected by chain 9 with the duplicate sprocket 18 on front conveyor frame 17; Baking oven 10 is provided with dodge gate 26, enters in baking oven 10 carry out maintenance or operation by it.
In order to the driving-chain between the sprocket wheel 13 on simply connected sprocket wheel 24 before preventing front conveyance axle 25 both sides and duplicate sprocket 18 and the front lower drive roll of multiple roll stretching-machine loosens sagging, tension mechanism before arranging between front conveyance axle 25 and the front lower drive roll of multiple roll stretching-machine, described front tension mechanism is by front tension shaft bearing 16, front tensioner sprocket shaft 15 and front tensioner sprocket wheel 14 form, described front tensioner sprocket shaft 15 is arranged in front tension shaft bearing 16, front tensioner sprocket shaft 15 is equipped with front tensioner sprocket wheel 14, whole front tension mechanism is fixed in multiple roll stretching-machine frame by front tension shaft bearing 16.
In order to prevent chain 9 after producing the rear lower drive roll of multiple roll stretching-machine because of sagging and cannot transmission, the rear tension mechanism be made up of rear tensioner sprocket wheel 3, adjustable plate 1 and rear tensioner sprocket shaft 2 is set between the rear lower drive roll and inter-axle shaft 4 of multiple roll stretching-machine, described adjustable plate 1 is fixed in ten five-roller stretcher frames, adjustable plate 1 is equipped with rear tensioner sprocket shaft 2, rear tensioner sprocket shaft 2 is fixed with rear tensioner sprocket wheel 3.
This lacing film system operationally, by front conveyor structure, sheet material is attached on the front lower drive roll lower surface of multiple roll stretching-machine, then walked between each drive roll and driven roll along L-type chain gathering sill with sheet material by driving-chain, finally go out from the lower surface of the rear lower drive roll of multiple roll stretching-machine, rear conveying mechanism is driven by the duplicate sprocket of front conveyor structure, the synchronous steady-state cycle running in front and back, what complete sheet material connects operation.
PP plastics simple tension sheet material lacing film system of the present invention has following remarkable advantage: PP plastics simple tension sheet material lacing film system of the present invention, be mainly used in PP plastics simple tension sheet material and enter the lacing film work of the sheet material before multiple roll stretching-machine, have and make the work of sheet material lacing film time saving and energy saving, energy-efficient, can greatly improve the advantages such as production efficiency and production security, all do not affect when especially occurring disconnected plate phenomenon when equipment normally uses or shut down and use and operation, economize energy and minimizing goods percent defective, play vital effect, avoid the generation of human casualty accident and human body scald accident simultaneously.
Accompanying drawing explanation
Fig. 1 is PP plastics simple tension sheet material lacing film system front view.
Fig. 2 is PP plastics simple tension sheet material lacing film system top view.
1-adjustable plate, tensioner sprocket shaft after 2-, tensioner sprocket wheel after 3-, 4-inter-axle shaft, 5-L type chain gathering sill, frame is carried after 6-, 7-rear bearing block, simply connected sprocket wheel after 8-, 9-chain, 10-is incubated frame, 11-driven roll, 12-drive roll, 13-sprocket wheel, tensioner sprocket wheel before 14-, tensioner sprocket shaft before 15-, tension shaft bearing before 16-, 17-front conveyor frame, 18-duplicate sprocket, 19-front-end bearing pedestal, 20-chain drive-belt, 21-drive sprocket, 22-reductor, 23-speed reducer base, simply connected sprocket wheel before 24-, conveyance axle before 25-, 26-dodge gate.
Detailed description of the invention
Below in conjunction with accompanying drawing and related description, PP plastics simple tension sheet material lacing film system of the present invention is described further.
Embodiment 1
As shown in Figure 1, 2, the PP plastics simple tension sheet material lacing film system of the present embodiment comprises insulation frame 10, multiple roll stretching-machine reductor 22 is equipped with in described insulation frame 10 inside, also comprise speed reducer base 23, front conveyor frame 17, stretching-machine frame, rear conveying frame 6, described reductor 22 is installed on speed reducer base 23, speed reducer base 23 is formed by square tubes soldering, and reductor 22 output shaft is equipped with drive sprocket 21; Described front conveyor frame 17 is welded by channel-section steel, front-end bearing pedestal 19 front conveyor frame 17 is equipped with, front conveyance axle 25 front-end bearing pedestal 19 is equipped with, the rear side of front conveyance axle 25 is equipped with front simply connected sprocket wheel 24, duplicate sprocket 18 is equipped with in front side, described front conveyance axle 25 is connected by chain drive-belt 20 with reductor 22, carries out power transmission between front conveyance axle 25 and reductor 22 by chain drive-belt 20; Described multiple roll stretching-machine front lower drive roll both sides roller end face is fixed with sprocket wheel 13, and the driven roll 11 in the middle of described multiple roll stretching-machine and the drive roll 12 roller both sides end face except front lower drive roll are all fixed with L-type chain gathering sill 5; Described rear conveying frame 6 is welded by channel-section steel, its top is provided with rear bearing block 7, described rear bearing block 7 is equipped with inter-axle shaft 4, rear simply connected sprocket wheel 8 is equipped with in the both sides of inter-axle shaft 4, and rear simply connected sprocket wheel 8 is driven running after being connected by chain 9 with the duplicate sprocket 18 on front conveyor frame 17; Baking oven 10 is provided with dodge gate 26, enters in baking oven 10 carry out maintenance or operation by it.
Embodiment 2
As shown in Figure 1, 2, the PP plastics simple tension sheet material lacing film system of the present embodiment adopts ten five-roller stretchers, it comprises insulation frame 10, ten five-roller stretcher reductors 22 are equipped with in described insulation frame 10 inside, also comprise speed reducer base 23, front conveyor frame 17, stretching-machine frame, rear conveying frame 6, described reductor 22 is installed on speed reducer base 23, and speed reducer base 23 is formed by square tubes soldering, and reductor 22 output shaft is equipped with drive sprocket 21, described front conveyor frame 17 is welded by channel-section steel, front-end bearing pedestal 19 front conveyor frame 17 is equipped with, front conveyance axle 25 front-end bearing pedestal 19 is equipped with, the rear side of front conveyance axle 25 is equipped with front simply connected sprocket wheel 24, duplicate sprocket 18 is equipped with in front side, described front conveyance axle 25 is connected by chain drive-belt 20 with reductor 22, power transmission is carried out by chain drive-belt 20 between front conveyance axle 25 and reductor 22, in order to the driving-chain between the sprocket wheel 13 on simply connected sprocket wheel 24 before preventing front conveyance axle 25 both sides and duplicate sprocket 18 and the front lower drive roll of multiple roll stretching-machine loosens sagging, tension mechanism before arranging between front conveyance axle 25 and the front lower drive roll of multiple roll stretching-machine, described front tension mechanism is by front tension shaft bearing 16, front tensioner sprocket shaft 15 and front tensioner sprocket wheel 14 form, described front tensioner sprocket shaft 15 is arranged in front tension shaft bearing 16, front tensioner sprocket shaft 15 is equipped with front tensioner sprocket wheel 14, whole front tension mechanism is fixed in ten five-roller stretcher frames by front tension shaft bearing 16, described ten five-roller stretcher front lower drive roll both sides roller end faces are fixed with sprocket wheel 13, and the driven roll 11 in the middle of described ten five-roller stretchers and the drive roll 12 roller both sides end face except front lower drive roll are all fixed with L-type chain gathering sill 5, described rear conveying frame 6 is welded by channel-section steel, its top is provided with rear bearing block 7, described rear bearing block 7 is equipped with inter-axle shaft 4, rear simply connected sprocket wheel 8 is equipped with in the both sides of inter-axle shaft 4, rear simply connected sprocket wheel 8 is driven running after being connected by chain 9 with the duplicate sprocket 18 on front conveyor frame 17, in order to prevent chain 9 after producing the rear lower drive roll of multiple roll stretching-machine because of sagging and cannot transmission, arrange between the rear lower drive roll and inter-axle shaft 4 of multiple roll stretching-machine by rear tensioner sprocket wheel 3, the rear tension mechanism that adjustable plate 1 and rear tensioner sprocket shaft 2 form, described adjustable plate 1 is fixed in ten five-roller stretcher frames, rear tensioner sprocket shaft 2 adjustable plate 1 is equipped with, rear tensioner sprocket shaft 2 is fixed with rear tensioner sprocket wheel 3, baking oven 10 is provided with dodge gate 26, enters in baking oven 10 carry out maintenance or operation by it.
Claims (5)
1.PP plastics simple tension sheet material lacing film system, comprise insulation frame (10), multiple roll stretching-machine reductor (22) is equipped with in described insulation frame (10) inside, it is characterized in that, also comprise speed reducer base (23), front conveyor frame (17), stretching-machine frame, rear conveying frame (6); Described reductor (22) is installed on speed reducer base (23), and speed reducer base (23) is formed by square tubes soldering, reductor (22) output shaft is equipped with drive sprocket (21); Described front conveyor frame (17) is welded by channel-section steel, front-end bearing pedestal (19) front conveyor frame (17) is equipped with, front conveyance axle (25) front-end bearing pedestal (19) is equipped with, the rear side of front conveyance axle (25) is equipped with front simply connected sprocket wheel (24), duplicate sprocket (18) is equipped with in front side, described front conveyance axle (25) is connected by chain drive-belt (20) with reductor (22), carries out power transmission between front conveyance axle (25) and reductor (22) by chain drive-belt (20); Described multiple roll stretching-machine front lower drive roll both sides roller end face is fixed with sprocket wheel (13), and the driven roll (11) in the middle of described multiple roll stretching-machine and the drive roll except front lower drive roll (12) roller both sides end face are all fixed with L-type chain gathering sill (5); Described rear conveying frame (6) is welded by channel-section steel, its top is provided with rear bearing block (7), inter-axle shaft (4) described rear bearing block (7) is equipped with, rear simply connected sprocket wheel (8) is equipped with in the both sides of inter-axle shaft (4), and rear simply connected sprocket wheel (8) is driven running after being connected by chain (9) with the duplicate sprocket (18) on front conveyor frame (17); Insulation frame (10) is provided with dodge gate (26), enters in insulation frame (10) carry out maintenance or operation by it; During work, first by front conveyor structure, sheet material is attached on the front lower drive roll lower surface of multiple roll stretching-machine, then walked between each roller along L-type chain gathering sill (5) with sheet material by driving-chain, finally go out from the lower surface of the rear lower drive roll of multiple roll stretching-machine, rear conveying mechanism is driven by the duplicate sprocket (18) of front conveyor structure, the synchronous steady-state cycle running in front and back, what complete sheet material connects operation.
2. PP plastics simple tension sheet material lacing film system according to claim 1, it is characterized in that, between front conveyance axle (25) and the front lower drive roll of multiple roll stretching-machine, front tension mechanism is set, described front tension mechanism is by front tension shaft bearing (16), front tensioner sprocket shaft (15) and front tensioner sprocket wheel (14) composition, described front tensioner sprocket shaft (15) is arranged on front tension shaft bearing (16), front tensioner sprocket shaft (15) is equipped with front tensioner sprocket wheel (14), whole front tension mechanism is fixed in multiple roll stretching-machine frame by front tension shaft bearing (16).
3. PP plastics simple tension sheet material lacing film system according to claim 1, it is characterized in that, the rear tension mechanism be made up of rear tensioner sprocket wheel (3), adjustable plate (1) and rear tensioner sprocket shaft (2) is set between the rear lower drive roll and inter-axle shaft (4) of multiple roll stretching-machine, described adjustable plate (1) is fixed in ten five-roller stretcher frames, adjustable plate (1) is equipped with rear tensioner sprocket shaft (2), rear tensioner sprocket shaft (2) is fixed with rear tensioner sprocket wheel (3).
4. PP plastics simple tension sheet material lacing film system according to claim 2, it is characterized in that, the rear tension mechanism be made up of rear tensioner sprocket wheel (3), adjustable plate (1) and rear tensioner sprocket shaft (2) is set between the rear lower drive roll and inter-axle shaft (4) of multiple roll stretching-machine, described adjustable plate (1) is fixed in ten five-roller stretcher frames, adjustable plate (1) is equipped with rear tensioner sprocket shaft (2), rear tensioner sprocket shaft (2) is fixed with rear tensioner sprocket wheel (3).
5. the PP plastics simple tension sheet material lacing film system according to claim 1-4 any one, it is characterized in that, described multiple roll stretching-machine is ten five-roller stretchers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310088971.1A CN103144292B (en) | 2013-03-20 | 2013-03-20 | Uniaxial PP (Polypropylene) plastic tension panel threading system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310088971.1A CN103144292B (en) | 2013-03-20 | 2013-03-20 | Uniaxial PP (Polypropylene) plastic tension panel threading system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103144292A CN103144292A (en) | 2013-06-12 |
| CN103144292B true CN103144292B (en) | 2015-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310088971.1A Expired - Fee Related CN103144292B (en) | 2013-03-20 | 2013-03-20 | Uniaxial PP (Polypropylene) plastic tension panel threading system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103144292B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4415114A1 (en) * | 1993-09-23 | 1995-04-13 | Erapa Ceka Maschbau | Film stretching device for a plastics film |
| CN202575484U (en) * | 2012-05-10 | 2012-12-05 | 荣升塑胶（上海）有限公司 | PVC (polyvinyl chloride) film sheet penetrating device |
| CN102814975A (en) * | 2012-09-11 | 2012-12-12 | 青岛江山旭机器制造有限公司 | BOPVA multi-roll stretcher for unilaterally stretching sheets |
| CN102862290A (en) * | 2012-09-27 | 2013-01-09 | 桂林电器科学研究院 | Film guiding device of film threading system of film longitudinal drawing machine and running method of film guiding device |
| CN203141842U (en) * | 2013-03-20 | 2013-08-21 | 青岛江山旭机器制造有限公司 | PP (Polypropylene) plastic unidirectional stretching plate penetrating system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8227658B2 (en) * | 2007-12-14 | 2012-07-24 | Kimberly-Clark Worldwide, Inc | Film formed from a blend of biodegradable aliphatic-aromatic copolyesters |
| JP5373492B2 (en) * | 2009-07-07 | 2013-12-18 | 株式会社カネカ | Stretched film manufacturing method, retardation film manufacturing method, polarizing plate manufacturing method, and image display device manufacturing method |
-
2013
- 2013-03-20 CN CN201310088971.1A patent/CN103144292B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4415114A1 (en) * | 1993-09-23 | 1995-04-13 | Erapa Ceka Maschbau | Film stretching device for a plastics film |
| CN202575484U (en) * | 2012-05-10 | 2012-12-05 | 荣升塑胶（上海）有限公司 | PVC (polyvinyl chloride) film sheet penetrating device |
| CN102814975A (en) * | 2012-09-11 | 2012-12-12 | 青岛江山旭机器制造有限公司 | BOPVA multi-roll stretcher for unilaterally stretching sheets |
| CN102862290A (en) * | 2012-09-27 | 2013-01-09 | 桂林电器科学研究院 | Film guiding device of film threading system of film longitudinal drawing machine and running method of film guiding device |
| CN203141842U (en) * | 2013-03-20 | 2013-08-21 | 青岛江山旭机器制造有限公司 | PP (Polypropylene) plastic unidirectional stretching plate penetrating system |
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| CN103144292A (en) | 2013-06-12 |
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Effective date of registration: 20180222 Address after: 266000 Qingdao City, Jiaozhou City, Jiaozhou City, Jiabei Street office through two Road North Patentee after: Qingdao O Ray Teco Plastic Machinery Co.,Ltd. Address before: 318-73 266000, Pioneer Center, hi tech Industrial Development Zone, Shandong, Qingdao Patentee before: QINGDAO JIANGSHANXU MACHINE MANUFACTURING Co.,Ltd. |
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Granted publication date: 20150603 |