CN109532220B - Plastic film double-sided printing device - Google Patents
Plastic film double-sided printing device Download PDFInfo
- Publication number
- CN109532220B CN109532220B CN201910060800.5A CN201910060800A CN109532220B CN 109532220 B CN109532220 B CN 109532220B CN 201910060800 A CN201910060800 A CN 201910060800A CN 109532220 B CN109532220 B CN 109532220B
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- Prior art keywords
- plastic film
- winding
- unwinding
- cooling mechanism
- chamber
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/002—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing cleaning devices for sheets or webs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/0476—Cooling
- B41F23/0479—Cooling using chill rolls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H16/00—Unwinding, paying-out webs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H18/00—Winding webs
- B65H18/08—Web-winding mechanisms
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
Abstract
The invention relates to the technical field of plastic film printing, in particular to a plastic film double-sided printing device which comprises an unwinding mechanism, a preprinting chamber, a plastic film, a compression roller, a double-sided printing chamber, a base, a cooling mechanism and a winding mechanism, wherein the unwinding mechanism is fixed at the end part of the base, and the plastic film in a roll is placed in the unwinding mechanism; the plastic film passes through the preprinting chamber, and two parallel compression rollers are fixed at the end part of the preprinting chamber; the double-sided printing chamber is fixed at the top of the base, and the plastic film penetrates through the inside of the double-sided printing chamber; the plastic film passes through the cooling mechanism, and the end part of the plastic film is connected with the winding mechanism. The plastic film cooling device is flexible to operate, can cool the printed plastic film, avoids smearing and sticking dirt, and improves the printing quality.
Description
Technical Field
The invention relates to the technical field of plastic film printing, in particular to a plastic film double-sided printing device.
Background
The plastic film is a film made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins, and is used for packaging and used as a film coating layer; plastic packages and plastic package products have a larger share in the market, and particularly, composite plastic flexible packages are widely applied to the fields of food, medicine, chemical industry and the like, wherein the proportion of the plastic packages is the largest, such as beverage packages, quick-frozen food packages, steamed and cooked food packages, fast food packages and the like, and the plastic packages and the plastic package products bring great convenience to the life of people.
The surface of the plastic film is printed with patterns in a printing mode so as to be convenient for use in different fields, the existing printing equipment is directly wound into a winding shaft after printing is finished, and the printed patterns are easily transferred to other positions due to higher printing temperature, so that smearing and sticking are caused; and the simultaneous unwinding and winding are not flexible enough. In view of this, the present invention provides a natural gas valve, which has the following characteristics:
(1) according to the plastic film double-sided printing device, when the plastic film is unreeled, the unreeling shaft is placed in the placing groove, the plastic film is unreeled in a pulling mode, the plastic film is convenient to take and place, and meanwhile the unreeling shaft can be effectively prevented from falling.
(2) According to the plastic film double-sided printing device, after printing is finished, the two sides of the plastic film can be cooled through water flowing through the guide rollers, meanwhile, the plastic film is pulled out through the two guide rollers to be exposed, the area of the plastic film in the air is increased, the plastic film is convenient to cool, and smearing and sticking caused by the fact that printing ink is not dry are avoided.
(3) According to the plastic film double-sided printing device, after printing is completed, the plastic film is wound immediately by using the gear to drive the winding shaft to rotate, so that the winding shaft can be replaced conveniently, and the winding is convenient and flexible.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the plastic film double-sided printing device, when the plastic film is unreeled, the unreeling shaft is placed in the placing groove, the plastic film is unreeled in a pulling and pulling mode, the plastic film is convenient to take and place, and meanwhile, the unreeling shaft can be effectively prevented from falling; after printing is finished, the two sides of the plastic film can be cooled by water flowing through the guide rollers, and the plastic film is pulled out by the two guide rollers to increase the area exposed to the air, so that the plastic film is convenient to cool, and smearing and sticking caused by undried printing ink are avoided; after printing is finished, the plastic film is wound immediately by utilizing a mode that the gear drives the winding shaft to rotate, so that the winding shaft can be replaced conveniently, and the winding is convenient and flexible.
The technical scheme adopted by the invention for solving the technical problems is as follows: a plastic film double-sided printing device comprises an unwinding mechanism, a preprinting chamber, a plastic film, a compression roller, a double-sided printing chamber, a base, a cooling mechanism and a winding mechanism, wherein the unwinding mechanism is fixed at the end part of the base, and a roll of the plastic film is placed in the unwinding mechanism; the plastic film passes through the preprinting chamber, and two parallel compression rollers are fixed at the end part of the preprinting chamber; the double-sided printing chamber is fixed at the top of the base, and the plastic film penetrates through the inside of the double-sided printing chamber; the plastic film passes through the cooling mechanism, and the end part of the plastic film is connected with the winding mechanism.
Specifically, the unwinding mechanism comprises a groove, an unwinding box, an unwinding shaft, a placing groove and a cover body, the unwinding box is fixed at the end part of the base, and the placing groove is formed in the edge of the top of the unwinding box; the unreeling shaft is placed in the placing groove; one side of the unwinding box is rotatably connected with the cover body, and the groove is formed in the other side of the unwinding box.
Specifically, the section of the placing groove adopts a semicircular structure, and the side part of the placing groove is rotatably connected with the cover body with the semicircular structure; the inner side of the cover body is provided with a through hole with the same diameter as the placing groove.
Specifically, cooling body contains water pump, first cooling body and second cooling body, the water pump is arranged in the hollow inside of base, just the water pump is connected first cooling body with second cooling body.
Specifically, the first cooling mechanism comprises a guide roller, a conveying pipe and a support, the support is fixed to the top of the base, and the top of the support is rotatably connected with the guide roller of a hollow structure; the both sides of guide roll are all rotated and are connected with the conveyer pipe, just the one end of guide roll is passed through duct connections the water pump, just the other end of guide roll passes through duct connections the base.
Specifically, the first cooling mechanism and the second cooling mechanism have the same structure, and the height of the bracket of the first cooling mechanism is smaller than the height of the bracket of the second cooling mechanism.
Specifically, the winding mechanism comprises a winding box, a winding groove, a driven gear, a winding shaft, a driving gear and a motor, the winding box is fixed at the end part of the base, and the winding groove is formed in the side part of the winding box; the winding shaft is placed in the winding groove, and the driven gear is fixed at the end part of the winding shaft; the driven gear is meshed with the driving gear, and the driving gear is rotatably connected to the side part of the winding box; the driving gear is connected with the motor.
Specifically, the centers of two sides of the top of the winding box are provided with winding grooves with semicircular sections, and the winding grooves are rotatably connected with the winding shaft.
Specifically, the compression roller includes brush, sleeve pipe, stop collar, spring, spacing arch, backup pad, air chamber and rubber, sheathed tube outside cover is equipped with the stop collar, just between the stop collar be equipped with the brush on the sleeve pipe, the bottom of stop collar is connected with the spring, just be connected with the backup pad on the spring, the symmetry is equipped with spacing arch in the backup pad, just be equipped with the air chamber between the spacing arch, just the outside of air chamber is equipped with rubber, and plastic film runs through between sleeve pipe and the rubber, realizes the cleanness to plastic film through the gap between brush and the rubber.
The invention has the beneficial effects that:
(1) according to the plastic film double-sided printing device, when the plastic film is unreeled, the unreeling shaft is placed in the placing groove, the plastic film is unreeled in a pulling mode, the plastic film is convenient to take and place, and meanwhile the unreeling shaft can be effectively prevented from falling.
(2) According to the plastic film double-sided printing device, after printing is finished, the two sides of the plastic film can be cooled through water flowing through the guide rollers, meanwhile, the plastic film is pulled out through the two guide rollers to be exposed, the area of the plastic film in the air is increased, the plastic film is convenient to cool, and smearing and sticking caused by the fact that printing ink is not dry are avoided.
(3) According to the plastic film double-sided printing device, after printing is completed, the plastic film is wound immediately by using the gear to drive the winding shaft to rotate, so that the winding shaft can be replaced conveniently, and the winding is convenient and flexible.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural diagram of a preheating structure of a double-sided printing apparatus for plastic films according to a preferred embodiment of the present invention;
fig. 2 is a schematic structural diagram of the unwinding mechanism shown in fig. 1;
FIG. 3 is an enlarged schematic view of the structure shown at A in FIG. 1;
fig. 4 is a schematic view of the structure of the press roll shown in fig. 1.
In the figure: 1. unwinding mechanism, 11, groove, 12, unwinding box, 13, unwinding shaft, 14, placement groove, 15, cover body, 151, through hole, 2, preprinting chamber, 3, plastic film, 4, compression roller, 41, brush, 42, sleeve, 43, spacing sleeve, 44, spring, 45, spacing protrusion, 46, support plate, 47, air chamber, 48, rubber, 5, double-sided printing chamber, 6, base, 7, cooling mechanism, 71, water pump, 72, first cooling mechanism, 721, guide roller, 722, delivery pipe, 723, support, 73, second cooling mechanism, 8, winding mechanism, 81, winding box, 82, winding groove, 83, driven gear, 84, winding shaft, 85, driving gear, 86 and motor.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 4, the double-sided printing device for plastic films comprises an unwinding mechanism 1, a pre-printing chamber 2, a plastic film 3, a pressing roller 4, a double-sided printing chamber 5, a base 6, a cooling mechanism 7 and a winding mechanism 8, wherein the unwinding mechanism 1 is fixed at the end of the base 6, and a roll of the plastic film 3 is placed inside the unwinding mechanism 1; the plastic film 3 passes through the preprinting chamber 2, and two parallel press rollers 4 are fixed at the end part of the preprinting chamber 2; the double-sided printing chamber 5 is fixed at the top of the base 6, and the plastic film 3 penetrates through the inside of the double-sided printing chamber 5; the plastic film 3 passes through the cooling mechanism 7, and the end part of the plastic film 3 is connected with the winding mechanism 8.
Specifically, the unwinding mechanism 1 comprises a groove 11, an unwinding box 12, an unwinding shaft 13, a placing groove 14 and a cover body 15, wherein the unwinding box 12 is fixed at the end of the base 6, and the placing groove 14 is formed in the top edge of the unwinding box 12; the unreeling shaft 13 is placed inside the placing groove 14; one side of the unwinding box 12 is rotatably connected with the cover body 15, the other side of the unwinding box 12 is provided with the groove 11, the unwinding shaft 13 for winding the plastic film 3 is arranged inside the placing groove 14 when the unwinding box is used, the plastic film penetrates through the groove 11, the cover body 15 is tightly covered, and unwinding of the plastic film 3 can be realized through rotation of the unwinding shaft 13 when the plastic film 3 is pulled.
Specifically, the section of the placing groove 14 adopts a semicircular structure, and the side part of the placing groove 14 is rotatably connected with the cover body 15 with the semicircular structure; the inner side of the cover body 15 is provided with a through hole 151 with the same diameter as that of the placing groove 14, so that the plastic film 3 can be tightened to facilitate printing.
Specifically, the cooling mechanism 7 includes a water pump 71, a first cooling mechanism 72 and a second cooling mechanism 73, the water pump 71 is disposed inside the hollow base 6, the water pump 71 is connected to the first cooling mechanism 72 and the second cooling mechanism 73, the water pump 71 is turned on, and the water inside the base 6 is pumped into the first cooling mechanism 72 and the second cooling mechanism 73 through the water pump 71, so that the printed plastic film 3 can be cooled.
Specifically, the first cooling mechanism 72 comprises guide rollers 721, a delivery pipe 722 and a support 723, the support 723 is fixed on the top of the base 6, and the top of the support 723 is rotatably connected with the guide rollers 721 of a hollow structure; the conveying pipes 722 are rotatably connected to both sides of the guide rollers 721, one ends of the guide rollers 721 are connected to the water pump 71 through the conveying pipes 722, the other ends of the guide rollers 721 are connected to the base 6 through the conveying pipes 722, and cooling water is pumped into the guide rollers 721 to cool the plastic films 3 through the water pump 71 during cooling.
Specifically, the first cooling mechanism 72 and the second cooling mechanism 73 have the same structure, and the height of the bracket 723 of the first cooling mechanism 72 is smaller than the height of the bracket 723 of the second cooling mechanism 73.
Specifically, the winding mechanism 8 includes a winding box 81, a winding slot 82, a driven gear 83, a winding shaft 84, a driving gear 85 and a motor 86, the winding box 81 is fixed at the end of the base 6, and the winding slot 82 is formed in the side of the winding box 81; the winding shaft 84 is placed inside the winding groove 82, and the driven gear 83 is fixed at the end of the winding shaft 84; the driven gear 83 is engaged with the driving gear 85, and the driving gear 85 is rotatably connected to the side of the winding box 81; the driving gear 85 is connected with the motor 86, when the plastic film is rolled, the motor 86 is turned on, the driving gear 85 is driven to rotate by the motor, when the driving gear 85 rotates, the driven gear 83 can be driven to rotate, then the rolling shaft 84 rotates, and the rolled plastic film 3 can be rolled.
Specifically, the winding grooves 82 with semicircular cross sections are formed in the centers of the two sides of the top of the winding box 81, and the winding grooves 82 are rotatably connected with the winding shaft 84.
Specifically, compression roller 4 includes brush 41, sleeve pipe 42, stop collar 43, spring 44, spacing arch 45, backup pad 46, air chamber 47 and rubber 48, sleeve pipe 42's outside cover is equipped with stop collar 43, just between the stop collar 43 be equipped with brush 41 on the sleeve pipe 42, the bottom of stop collar 43 is connected with spring 44, just be connected with backup pad 46 on the spring 44, the symmetry is equipped with spacing arch 45 on the backup pad 46, just be equipped with air chamber 47 between the spacing arch 45, just the outside of air chamber 47 is equipped with rubber 48, and plastic film runs through between sleeve pipe 42 and the rubber 48, realizes the cleanness to plastic film through the gap between brush 41 and the rubber 48, simultaneously, guarantees that plastic film can more smooth entering after running through, makes the printing effect better.
When the double-sided printing machine is used, a coiled plastic film 3 to be printed and a unreeling shaft 13 of the plastic film are placed in the placing groove 14 when the double-sided printing machine is used, one end of the plastic film 3 penetrates through the groove 11, then the cover body 15 is closed, one end of the plastic film 3 penetrates through the groove 11 and then penetrates through the inside of the preprinting chamber 2 to be subjected to primary double-sided printing, and then the plastic film 3 penetrates through the two pressing rollers 4 and then penetrates through the double-sided printing chamber 5 to be subjected to secondary printing, so that the plastic film 3 is printed again to form a required pattern; and then the bottom of the printed plastic film 3 passes through the first cooling mechanism 72, and then the top passes through the second cooling mechanism 73, meanwhile, the water pump 71 is turned on, the cooling water in the base 6 is pumped into the guide roller 721, the plastic film 3 is cooled by the guide roller 721, so that the printed ink is rapidly cooled, the phenomenon of ink re-sticking or smearing is avoided, when the plastic film is rolled, the motor 86 is turned on, the driving gear 85 is driven to rotate by the motor, and when the driving gear 85 rotates, the driven gear 83 is driven to rotate, so that the rolling shaft 84 rotates, and the rolled plastic film 3 can be rolled.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A plastic film double-sided printing device is characterized in that: the plastic film printing machine comprises an unwinding mechanism (1), a preprinting chamber (2), a plastic film (3), a pressing roller (4), a double-sided printing chamber (5), a base (6), a cooling mechanism (7) and a winding mechanism (8), wherein the unwinding mechanism (1) is fixed at the end part of the base (6), and the plastic film (3) in a coiled form is placed in the unwinding mechanism (1); the plastic film (3) passes through the preprinting chamber (2), and two parallel compression rollers (4) are fixed at the end part of the preprinting chamber (2); the top of the base (6) is used for fixing the double-sided printing chamber (5), and the plastic film (3) penetrates through the inside of the double-sided printing chamber (5); the plastic film (3) passes through the cooling mechanism (7), and the end part of the plastic film (3) is connected with the winding mechanism (8);
the unwinding mechanism (1) comprises a groove (11), an unwinding box (12), an unwinding shaft (13), a placing groove (14) and a cover body (15), the unwinding box (12) is fixed at the end part of the base (6), and the placing groove (14) is formed in the edge of the top of the unwinding box (12); the unreeling shaft (13) is placed in the placing groove (14); one side of the unwinding box (12) is rotatably connected with the cover body (15), and the other side of the unwinding box (12) is provided with the groove (11);
the compression roller (4) comprises a brush (41), a sleeve (42), a limiting sleeve (43), a spring (44), a limiting bulge (45), a support plate (46), an air chamber (47) and rubber (48), the limiting sleeve (43) is sleeved outside the sleeve (42), a brush (41) is arranged on the sleeve (42) between the limiting sleeves (43), the bottom of the limiting sleeve (43) is connected with a spring (44), and the spring (44) is connected with a supporting plate (46), the supporting plate (46) is symmetrically provided with limiting bulges (45), an air chamber (47) is arranged between the limiting bulges (45), rubber (48) is arranged on the outer side of the air chamber (47), a plastic film penetrates between the sleeve (42) and the rubber (48), the cleaning of the plastic film is realized through the gap between the brush (41) and the rubber (48).
2. A plastic film duplex printing apparatus according to claim 1 wherein: the section of the placing groove (14) adopts a semicircular structure, and the side part of the placing groove (14) is rotationally connected with the cover body (15) with the semicircular structure; the inner side of the cover body (15) is provided with a through hole (151) with the same diameter as the placing groove (14).
3. A plastic film duplex printing apparatus according to claim 1 wherein: the cooling mechanism (7) comprises a water pump (71), a first cooling mechanism (72) and a second cooling mechanism (73), the water pump (71) is arranged inside the hollow base (6), and the water pump (71) is connected with the first cooling mechanism (72) and the second cooling mechanism (73).
4. A plastic film duplex printing apparatus according to claim 3 wherein: the first cooling mechanism (72) comprises guide rollers (721), a delivery pipe (722) and a bracket (723), the bracket (723) is fixed at the top of the base (6), and the top of the bracket (723) is rotatably connected with the guide rollers (721) of a hollow structure; both sides of guide roll (721) all rotate and are connected with conveyer pipe (722), and the one end of guide roll (721) passes through conveyer pipe (722) is connected water pump (71), and the other end of guide roll (721) passes through conveyer pipe (722) is connected base (6).
5. A plastic film duplex printing apparatus according to claim 4 wherein: the first cooling mechanism (72) and the second cooling mechanism (73) are identical in structure, and the height of the bracket (723) of the first cooling mechanism (72) is smaller than the height of the bracket (723) of the second cooling mechanism (73).
6. A plastic film duplex printing apparatus according to claim 1 wherein: the winding mechanism (8) comprises a winding box (81), a winding groove (82), a driven gear (83), a winding shaft (84), a driving gear (85) and a motor (86), the winding box (81) is fixed at the end part of the base (6), and the winding groove (82) is formed in the side part of the winding box (81); the winding shaft (84) is placed in the winding groove (82), and the driven gear (83) is fixed at the end part of the winding shaft (84); the driven gear (83) is meshed with the driving gear (85), and the driving gear (85) is rotatably connected to the side part of the winding box (81); the driving gear (85) is connected with the motor (86).
7. A plastic film duplex printing apparatus according to claim 6 wherein: the winding grooves (82) with semicircular sections are formed in the centers of the two sides of the top of the winding box (81), and the winding grooves (82) are rotatably connected with the winding shaft (84).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910060800.5A CN109532220B (en) | 2019-01-23 | 2019-01-23 | Plastic film double-sided printing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910060800.5A CN109532220B (en) | 2019-01-23 | 2019-01-23 | Plastic film double-sided printing device |
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| CN109532220A CN109532220A (en) | 2019-03-29 |
| CN109532220B true CN109532220B (en) | 2021-03-05 |
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| CN201910060800.5A Active CN109532220B (en) | 2019-01-23 | 2019-01-23 | Plastic film double-sided printing device |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111993782B (en) * | 2020-09-12 | 2021-11-02 | 安徽源洲包装材料有限公司 | Printing device for plastic film production and processing |
| CN113135023A (en) * | 2021-03-23 | 2021-07-20 | 新沂崚峻光电科技有限公司 | Device for printing embossing film |
| CN113400789B (en) * | 2021-06-15 | 2022-06-14 | 安徽国伟兴新材料科技有限公司 | Plastic film double-sided printing device |
| CN113910760A (en) * | 2021-10-16 | 2022-01-11 | 任甲丰 | Plastic film double-sided printing system |
| CN114055923A (en) * | 2021-10-29 | 2022-02-18 | 汪帝臣 | Plastic film double-sided printing system |
| CN114516557A (en) * | 2021-12-31 | 2022-05-20 | 南通盛邦制辊有限公司 | Macromolecular plate laminating machine winding mechanism |
| CN114671275B (en) * | 2022-04-17 | 2023-12-22 | 安徽抱龙新材料科技有限公司 | Plastic film printing rolling driving device |
| CN114889319B (en) * | 2022-06-15 | 2023-09-08 | 广州南沙区有建塑料有限公司 | Plastic film double-sided printing process and equipment |
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| DE3128430C2 (en) * | 1981-07-18 | 1984-04-05 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Rotary printing machine with a cooling unit connected to a dryer |
| CN101653926A (en) * | 2009-09-27 | 2010-02-24 | 南通哥班玻璃纤维制品有限公司 | Coat applying process of glass fiber reinforced grinding-wheel screen cloth |
| JP5562148B2 (en) * | 2010-07-05 | 2014-07-30 | キヤノン株式会社 | Recording device |
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| CN205988863U (en) * | 2016-07-26 | 2017-03-01 | 惠州市浩明科技股份有限公司 | A kind of parallel unicoater |
| CN108840151A (en) * | 2018-07-27 | 2018-11-20 | 胡爱珍 | A kind of food package film with protective shell |
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Effective date of registration: 20210210 Address after: 521000 in Guantang Industrial Zone, Xiangqiao District, Chaozhou City, Guangdong Province Applicant after: Guangdong Hengli new packing material Co.,Ltd. Address before: 610065 School of chemical engineering, Sichuan University, No. 24 south section of first ring road, Sichuan, Chengdu Applicant before: Wang Shun |
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