CN107248432B - The Preparation equipment of conductive film - Google Patents
The Preparation equipment of conductive film Download PDFInfo
- Publication number
- CN107248432B CN107248432B CN201710431937.8A CN201710431937A CN107248432B CN 107248432 B CN107248432 B CN 107248432B CN 201710431937 A CN201710431937 A CN 201710431937A CN 107248432 B CN107248432 B CN 107248432B
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- Prior art keywords
- film
- shell
- roller
- shaft
- support plate
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0026—Apparatus for manufacturing conducting or semi-conducting layers, e.g. deposition of metal
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0036—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/14—Non-insulated conductors or conductive bodies characterised by their form comprising conductive layers or films on insulating-supports
Abstract
The present invention provides a kind of Preparation equipments of conductive film, belong to function film technical field.It solves blowing and material recovering speed is different that film is caused the technical problems such as to be difficult to be tensioned.There is on shell membrane inlet and film to export for a kind of Preparation equipment of conductive film, including a sputter；The support plate being fixedly linked with shell is provided between membrane inlet and film outlet, there is a sliding slot in support plate, a slide plate is inserted in sliding slot, the middle part of slide plate has a baffle, is provided with buffer spring at left and right sides of the left and right sides and lower section above baffle；The both ends of support plate, which are respectively arranged with, enters feed roller and the discharging roller in film outlet in membrane inlet.The present invention has many advantages, such as the automatic adjustment of film tensile force.
Description
Technical field
The invention belongs to function film technical fields, are related to a kind of Preparation equipment of conductive film.
Background technique
Conductive film is widely used in FPD, screen formula touch technology, solar control, antifog glass, ice glass, prevents
The fields such as electrostatic coating are realized by adhering to the conductive layer of layer of transparent on general thin, and the conductive layer of attachment can be used
The means processing such as sputter, pulse laser deposition.
In the prior art, the technology for processing conductive film by various means is equal, and there are the following problems: since film is relatively thin,
Extruding in coiling process, in process treatment process by uneven external force or hard part, so that film be caused to become
Shape, formation male and fomale(M&F), breakage etc..
Summary of the invention
In view of the above problems existing in the prior art, the purpose of the present invention is to provide a kind of preparations of conductive film to set
Standby, the technical problem to be solved by the present invention is to eliminate as much as the bad shadow of the rotation speed change bring of emptying roller and material receiving roller
It rings.
Object of the invention can be realized by the following technical scheme: a kind of Preparation equipment of conductive film, Preparation equipment
Including a sputter, which is characterized in that the sputter includes a cylindric shell, and the both ends of the shell have opening,
It is provided with a hollow mounting cylinder in the shell, a shaft is provided in the mounting cylinder, the shaft is defeated with a motor
Shaft is connected, and the shaft is hollow structure, and there is membrane inlet and film to export on the shell；The membrane inlet with it is thin
It is provided with the support plate being fixedly linked with shell between film outlet, there is a sliding slot in the support plate, plugged in the sliding slot
There is a slide plate, the middle part of the slide plate has a baffle, is all provided at left and right sides of the left and right sides and lower section above the baffle
It is equipped with buffer spring；The both ends of the support plate are respectively arranged with entering feed roller and being located at film in membrane inlet and export
Interior discharging roller.
Film on emptying roller gradually decreases, and the film on material receiving roller gradually increases, and respective revolving speed changes, and is
The pneumatic driving structure of cooperation eliminates this variation bring adverse effect, is arranged between membrane inlet and film export
There are support plate, effect of the film by buffer spring, left and right pushes support plate, so that film is released and the velocity variations quilt of retracting
The elimination of drop.
In a kind of Preparation equipment of above-mentioned conductive film, it is provided in shell in the support plate, and be located at
Guide roller one below membrane inlet；It is provided in shell in the support plate, and is located at leading for film outlet lower section
Feed roller two.
The effect of guide roller one and guide wheel roller two is oriented to in the intracorporal film of shell, makes to be located in shell
Film be between shell and mounting cylinder, prevent film from contacting with mounting cylinder or shell.
In a kind of Preparation equipment of above-mentioned conductive film, bearing is provided between the shaft and the output shaft of motor
Two, air inlet is offered on the bearing two, and the air inlet can be communicated with the vented cavity.
Pressure stabilizing gas flow equipment, such as blast apparatus is to delivery air is carried out in air inlet, hence into the ventilation in shaft
It is intracavitary, herein it should be noted that: the inner ring of bearing two is under rotary state, and air-flow is in intermittent air-suction state, on the one hand
It can prevent air-flow from generating to the side effect of film with buffer gas flow, it on the other hand can be with pressure accumulation, to save the energy of blast apparatus
Consumption.
In a kind of Preparation equipment of above-mentioned conductive film, the both ends of the shaft is stretched out except the shell, described
One end of shaft is connected with the output shaft of motor, and the other end of the shaft communicates with the outside world vented cavity.
In a kind of Preparation equipment of above-mentioned conductive film, this Preparation equipment further includes emptying roller and material receiving roller, described
It is arranged with an axle sleeve on emptying roller, there is gap between the axle sleeve and emptying roller, be evenly arranged on the inner wall of the axle sleeve
Several armature items, be provided on the emptying roller with the one-to-one coiling stake of armature item, be wound with energization in the coiling stake
Conducting wire.
By being powered to the conducting wire in coiling stake, armature item can be adsorbed, makes that there is resistance between axle sleeve and emptying roller
Film is wound on axle sleeve by power, can guarantee that film is in the state of tensioning in this way, there is no rush down film.
By controlling the electric current of electrified wire, resistance between adjustable axle sleeve and emptying roller is realized electrodeless adjustable.
In a kind of Preparation equipment of above-mentioned conductive film, a guide layer is provided on the inner wall of the axle sleeve, it is described
Armature item is located in the guide layer.
Due between the armature item being arranged on axle sleeve and axle sleeve have gap, emptying roller be easy to cause during rotation with
The stuck situation of axle sleeve, after being provided with guide layer on the inner wall of axle sleeve, between capable of ensureing between emptying roller and guide layer
Gap is uniform, rotates smooth.
Compared with prior art, the invention has the following advantages that
1, the film on emptying roller gradually decreases, and the film on material receiving roller gradually increases, and respective revolving speed changes,
In order to cooperate pneumatic driving structure, this variation bring adverse effect is eliminated, is set between membrane inlet and film outlet
It is equipped with support plate, effect of the film by buffer spring, left and right pushes support plate, so that film is released and the velocity variations of retracting
By the elimination of drop.
2, pressure stabilizing gas flow equipment, such as blast apparatus is to carrying out delivery air in air inlet, hence into logical in shaft
Wind is intracavitary, herein it should be noted that: the inner ring of bearing two is under rotary state, and air-flow is in intermittent air-suction state, a side
Face can prevent air-flow from generating to the side effect of film with buffer gas flow, on the other hand can be with pressure accumulation, to save blast apparatus
Energy consumption.
Detailed description of the invention
Fig. 1 is the overall structure diagram of this Preparation equipment.
Fig. 2 is the sectional view in Fig. 1 on the direction A.
Fig. 3 is the structural schematic diagram of material receiving roller in this Preparation equipment.
Fig. 4 is the overall structure diagram of material receiving roller in this Preparation equipment.
Fig. 5 is the sectional view of emptying roller in this Preparation equipment.
Fig. 6 is the enlarged drawing of part B in Fig. 1.
Fig. 7 is the enlarged drawing of Local C in Fig. 1.
In figure, 11, shell；12, mounting cylinder；13, shaft；14, vented cavity；15, partition；16, escape groove one；17, it divulges information
Plate；21, membrane inlet；22, film exports；23, emptying roller；24, material receiving roller；31, axle sleeve；32, armature item；33, coiling stake；
34, guide layer；41, bearing one；42, fixing sleeve；43, blade；44, escape groove two；45, linking arm；46, convex block；51, it supports
Plate；52, sliding slot；53, slide plate；54, baffle；55, buffer spring；61, enter feed roller；62, discharge roller；63, guide roller one；
64, guide roller two；71, bearing two；72, air inlet.
Specific embodiment
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
However, the present invention is not limited to these examples.
As depicted in figs. 1 and 2, the Preparation equipment of conductive film includes a sputter, and sputter includes a cylindric shell
Body 11, the both ends of shell 11 have opening, are provided with a hollow mounting cylinder 12 in shell 11, are provided with one turn in mounting cylinder 12
Axis 13, shaft 13 are connected with the output shaft of a motor, and shaft 13 is hollow structure, have a vented cavity 14, ventilation in shaft 13
Several partitions 15 are evenly arranged on the inner wall of chamber 14, outer end and the shaft 13 of each partition 15 are fixedly linked, adjacent separator 15
There is gap between inner end, offer several escape groove 1 on mounting cylinder 12, be evenly arranged with and keep away on the outer wall of shaft 13
It allows the one-to-one ventilating board 17 of slot 1, there is ventilation gap in ventilating board 17, the inner end of ventilating board 17 and shaft 13 are fixed
It is connected, the outer end of ventilating board 17 is plugged in corresponding escape groove 1；There is membrane inlet 21 and film to export on shell 11
22；Ventilation gap is communicated with vented cavity 14.
The functional component of sputter is arranged in the space between sleeve and shaft 13, the specific structure of sputter is existing
There is technology, not carefully states herein；Film enters in shell 11 from membrane inlet 21, comes out after the completion of sputter from film outlet 22,
It is furled；Film is contacted with other component in sputtering process in order to prevent, so as to cause deformation of thin membrane or bending, is caused
Sputter is uneven, also results in that film is impaired, in the present solution, by one end of shaft 13 in vented cavity 14 vent flow, shaft
13 state under the drive of the motor in rotation, air-flow will not cause to impact to film, moreover, the pressure that air-flow is formed make it is thin
Certain gap is formed between film and the outer wall of mounting cylinder 12, both will not influence the transmission of film, while will not make to film
At damage.
The inner end of partition 15 to the airflow direction of the distance between the inner wall of shaft 13 in vented cavity 14 gradually becomes smaller；For
Prevent the intensity of air-flow from air flow inlet to different between outlet, specially by the inner end of partition 15 to the inner wall of shaft 13
The distance between be set as gradually smaller structure, that is to say, that air-flow enters the aperture in vented cavity 14 and airflow space gradually
Expand, gradually slows down the adverse effect caused by film to reach and eliminate stream pressure.
As shown in figures 1 to 6, partition 15 is by 6, and ventilating board 17 is by 12.It is corresponding in interval between two partitions 15
Two ventilating boards 17 ensure the intensity of shaft 13, will not influence the uniformity of air-flow.
As shown in Figure 1 and Figure 5, this Preparation equipment further includes emptying roller 23 and material receiving roller 24, is arranged with one on emptying roller 23
Axle sleeve 31 has gap, is evenly arranged with several armature items 32 on the inner wall of axle sleeve 31, puts between axle sleeve 31 and emptying roller 23
Be provided on material roller 23 with the one-to-one coiling stake 33 of armature item 32, be wound with electrified wire in coiling stake 33；By to coiling
Stake 33 on conducting wire be powered, armature item 32 can be adsorbed, make between axle sleeve 31 and emptying roller 23 have resistance, by film around
On axle sleeve 31, it can guarantee that film is in the state of tensioning in this way, there is no rush down film.
By controlling the electric current of electrified wire, resistance between adjustable axle sleeve 31 and emptying roller 23, realize it is electrodeless can
It adjusts.
A guide layer 34 is provided on the inner wall of axle sleeve 31, armature item 32 is located in guide layer 34；Due to being set on axle sleeve 31
There is gap, emptying roller 23 be easy to cause the feelings stuck with axle sleeve 31 during rotation between the armature item 32 set and axle sleeve 31
Condition is provided with after guide layer 34 on the inner wall of axle sleeve 31, can ensure that the gap between emptying roller 23 and guide layer 34 is equal
It is even, it rotates smooth.
Wherein, guide layer 34 is non-magnet material.
Guide layer 34 can be made of ceramic material, or the other materials such as graphite are made.
Shown in as shown in Figure 1, Figure 3 and Figure 4, the both ends of material receiving roller 24, which are respectively arranged with one, can drive material receiving roller 24 to rotate
Driving structure；Driving structure includes a bearing 1, a blower and two fixing sleeves 42, is fixedly installed on the outer wall of bearing 1
There are several blades 43, there is an escape groove 2 44 on blade 43, the both ends of escape groove 2 44 are respectively provided with a linking arm 45, bearing
One 41 are located in escape groove 2 44, and linking arm 45 is hinged on bearing 1, is evenly arranged on fixing sleeve 42 and blade 43 1
One corresponding convex block 46, convex block 46 and corresponding linking arm 45 against；Bearing 1 and fixing sleeve 42 are set in material receiving roller
On 24, gas shock is carried out to blade 43 by blower, material receiving roller 24 can be driven to rotate, simultaneously as being received using soft-sphere model
Material roller 24 will not generate biggish pulling force to film prevents it from situations such as pulling, deforming occur to protect to film.
Further, blade 43 is made of plastic material.
Fixing sleeve 42 has internal screw thread, and the lateral surface of fixing sleeve 42 opens up fluted；It is provided with external screw thread on material receiving roller 24,
After being threadedly coupled between fixing sleeve 42 and material receiving roller 24, by rotating fixing sleeve 42, the convex block being fixed on fixing sleeve 42 is driven
46 are press-connected arm 45, to adjust the inclination angle of linking arm 45, i.e. the inclination angle of blade 43, and under cabinet airflow function, inclination angle
Change, i.e., the driving force of changeable blade 43, to adjust the retracting torque of material receiving roller 24.
As shown in Figure 1 and Figure 7, the support being fixedly linked with shell 11 is provided between membrane inlet 21 and film outlet 22
Plate 51, support plate 51 is interior to have a sliding slot 52, and a slide plate 53 is inserted in sliding slot 52, and the middle part of slide plate 53 has a baffle 54,
Buffer spring 55 is provided at left and right sides of the left and right sides and lower section of 54 top of baffle；The both ends of support plate 51 are respectively set
Have to be located in membrane inlet 21 and enters feed roller 61 and the discharging roller 62 in film outlet 22.
Film on emptying roller 23 gradually decreases, and the film on material receiving roller 24 gradually increases, and respective revolving speed becomes
Change, in order to cooperate pneumatic driving structure, eliminate this variation bring adverse effect, in membrane inlet 21 and film outlet 22
Between be provided with support plate 51, effect of the film by buffer spring 55, left and right pushes support plate 51, so that film is released and volume
The velocity variations of receipts are by the elimination of drop；It is provided in support plate 51 in shell 11, and is located at 21 lower section of membrane inlet
Guide roller 1；It is provided in support plate 51 in shell 11, and is located at the guide roller 2 64 of 22 lower section of film outlet；
The effect of guide roller 1 and guide wheel roller two is oriented to the film in shell 11, makes to be located in shell 11
Film is between shell 11 and mounting cylinder 12, prevents film from contacting with mounting cylinder 12 or shell 11.
As shown in Fig. 2, being provided with bearing 2 71 between shaft 13 and the output shaft of motor, air inlet is offered on bearing 2 71
Hole 72, air inlet 72 can communicate pressure stabilizing gas flow equipment with vented cavity 14, such as blast apparatus in air inlet 72 to conveying
Air-flow, hence into the vented cavity 14 in shaft 13, herein it should be noted that: the inner ring of bearing 2 71 is in rotary state
Under, air-flow is in intermittent air-suction state, on the one hand can prevent air-flow from generating to the side effect of film with buffer gas flow, another
Aspect can be with pressure accumulation, to save the energy consumption of blast apparatus；13 both ends of shaft are stretched out except shell 11, one end of shaft 13 with
The output shaft of motor is connected, and the other end of shaft 13 communicates with the outside world vented cavity 14.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (2)
1. a kind of Preparation equipment of conductive film, including a sputter, which is characterized in that the sputter includes one cylindric
Shell (11), the both ends of the shell (11) have opening, are provided with a hollow mounting cylinder (12), institute in the shell (11)
It states and is provided with a shaft (13) in mounting cylinder (12), the shaft (13) is connected with the output shaft of a motor, the shaft (13)
There are membrane inlet (21) and film to export (22) for hollow structure, on the shell (11)；The membrane inlet (21) with it is thin
It is provided with the support plate (51) being fixedly linked with shell (11) between film outlet (22), there is a sliding slot in the support plate (51)
(52), it is inserted with a slide plate (53) in the sliding slot (52), the middle part of the slide plate (53) has a baffle (54), the baffle
(54) buffer spring (55) are provided at left and right sides of the left and right sides and lower section above；The both ends of the support plate (51) point
It is not provided with the discharging roller (62) for entering feed roller (61) and be located in film outlet (22) in membrane inlet (21)；Institute
It states and is provided on support plate (51) in shell (11), and be located at the guide roller one (63) below membrane inlet (21)；Institute
It states and is provided on support plate (51) in shell (11), and be located at the guide roller two (64) below film outlet (22)；Institute
It states and is provided with bearing two (71) between shaft (13) and the output shaft of motor, offer air inlet on the bearing two (71)
(72), there are a vented cavity (14) in shaft (13), the air inlet (72) can communicate with the vented cavity (14)；Described turn
Axis (13) both ends are stretched out except the shell (11), and one end of the shaft (13) is connected with the output shaft of motor, and described turn
The other end of axis (13) communicates with the outside world vented cavity (14)；This Preparation equipment further includes emptying roller (23) and material receiving roller (24),
It is arranged with an axle sleeve (31) on the emptying roller (23), there is gap, the axis between the axle sleeve (31) and emptying roller (23)
It covers and is evenly arranged with several armature items (32) on the inner wall of (31), be provided on the emptying roller (23) and armature item (32) one
One corresponding coiling stake (33) is wound with electrified wire on the coiling stake (33)；The both ends of the material receiving roller (24) are respectively set
There is the driving structure that material receiving roller (24) can be driven to rotate；The driving structure include a bearing one (41), a blower and
Two fixing sleeves (42) are fixedly installed several blades (43) on the outer wall of the bearing one (41), have on the blade (43)
There is an escape groove two (44), the both ends of the escape groove two (44) are respectively provided with a linking arm (45), bearing one (41) position
In the escape groove two (44), the linking arm (45) is hinged on the bearing one (41), on the fixing sleeve (42)
It is even be provided with blade (43) one-to-one convex block (46), the convex block (46) and corresponding linking arm (45) against.
2. a kind of Preparation equipment of conductive film according to claim 1, which is characterized in that on the inner wall of the axle sleeve (31)
It is provided with a guide layer (34), the armature item (32) is located in the guide layer (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710431937.8A CN107248432B (en) | 2017-06-09 | 2017-06-09 | The Preparation equipment of conductive film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710431937.8A CN107248432B (en) | 2017-06-09 | 2017-06-09 | The Preparation equipment of conductive film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107248432A CN107248432A (en) | 2017-10-13 |
| CN107248432B true CN107248432B (en) | 2019-06-04 |
Family
ID=60018205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710431937.8A Active CN107248432B (en) | 2017-06-09 | 2017-06-09 | The Preparation equipment of conductive film |
Country Status (1)
| Country | Link |
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| CN (1) | CN107248432B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116815375B (en) * | 2023-08-28 | 2023-11-24 | 常州虹纬纺织有限公司 | Slub yarn production system and working method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5478025A (en) * | 1994-08-09 | 1995-12-26 | Wang; Shing | Tension controlled winding device |
| CN1611790A (en) * | 2003-10-30 | 2005-05-04 | 乐金电子(天津)电器有限公司 | Rotary compressor |
| CN101980853A (en) * | 2008-03-27 | 2011-02-23 | 栗村化学株式会社 | Film-curling device, a film-splicing device comprising the same, and a splicing method for film using the same |
| CN105102676A (en) * | 2013-02-07 | 2015-11-25 | 荷兰应用自然科学研究组织Tno | Method and apparatus for depositing atomic layers on substrate |
| CN205997494U (en) * | 2016-08-02 | 2017-03-08 | 中华商务联合印刷(广东)有限公司 | A kind of anti-fold multi-functional flanging printing machine |
-
2017
- 2017-06-09 CN CN201710431937.8A patent/CN107248432B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5478025A (en) * | 1994-08-09 | 1995-12-26 | Wang; Shing | Tension controlled winding device |
| CN1611790A (en) * | 2003-10-30 | 2005-05-04 | 乐金电子(天津)电器有限公司 | Rotary compressor |
| CN101980853A (en) * | 2008-03-27 | 2011-02-23 | 栗村化学株式会社 | Film-curling device, a film-splicing device comprising the same, and a splicing method for film using the same |
| CN105102676A (en) * | 2013-02-07 | 2015-11-25 | 荷兰应用自然科学研究组织Tno | Method and apparatus for depositing atomic layers on substrate |
| CN205997494U (en) * | 2016-08-02 | 2017-03-08 | 中华商务联合印刷(广东)有限公司 | A kind of anti-fold multi-functional flanging printing machine |
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| Publication number | Publication date |
|---|---|
| CN107248432A (en) | 2017-10-13 |
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Effective date of registration: 20210803 Address after: 314400 Jinchang Road, Haining Economic Development Zone, Haining, Jiaxing, Zhejiang, 11 Patentee after: Zhejiang Huifeng Zhicheng Technology Co.,Ltd. Address before: 314400 No. 8-1, Danmei Road, Haining Economic Development Zone, Haining City, Jiaxing City, Zhejiang Province Patentee before: ZHEJIANG HUIFENG FILM TECHNOLOGY Co.,Ltd. |