CN109228423A - The production and processing method of CPP film - Google Patents
The production and processing method of CPP film Download PDFInfo
- Publication number
- CN109228423A CN109228423A CN201811289645.6A CN201811289645A CN109228423A CN 109228423 A CN109228423 A CN 109228423A CN 201811289645 A CN201811289645 A CN 201811289645A CN 109228423 A CN109228423 A CN 109228423A
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- Prior art keywords
- film
- roll
- wind
- production
- processing method
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 238000003672 processing method Methods 0.000 title claims abstract description 19
- 238000004804 winding Methods 0.000 claims abstract description 37
- 238000007766 curtain coating Methods 0.000 claims abstract description 9
- 238000005520 cutting process Methods 0.000 claims abstract description 9
- 238000001125 extrusion Methods 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 56
- 229910052742 iron Inorganic materials 0.000 claims description 28
- 238000005096 rolling process Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000009966 trimming Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 4
- 230000001965 increasing effect Effects 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 79
- 238000000034 method Methods 0.000 description 11
- 238000001816 cooling Methods 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 239000012528 membrane Substances 0.000 description 6
- 238000003825 pressing Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention relates to polymeric material fields, the in particular to production and processing method of CPP film, comprising: Step 1: mixing: raw material being sent into batch mixer and carries out mixing；Step 2: squeezing out curtain coating: the raw material mixed is thermally formed molten condition in extruder and squeezes out curtain coating；Step 3: precooling: the film of extrusion, which enters in cooler bin, to be precooled, and the temperature in cooler bin is 25-35 DEG C；Step 4: being cooled and shaped: being equipped with the chill roll constantly rotated in cooler bin, the surface temperature of chill roll is 20-30 DEG C；Step 5: increasing surface adhesion force: being handled using Corona roller film surface；Step 6: winding cutting: rotation wind-up roll, so that CPP film, which is wound on wind-up roll, forms winding film, in film take-up, the cutter at mobile roller both ends cuts film；Step 7: rim charge is wound.The present invention provides a kind of production and processing method of CPP film wound in trimming, to improve the outgoing of CPP film and reduce the probability that breaks down during film take-up.
Description
Technical field
The present invention relates to polymeric material fields, the in particular to production and processing method of CPP film.
Background technique
CPP is by the polypropylene film of curtain coating extrusion process production in plastic cement industry, and the film is after printing, bag making
It is widely used in the various packagings of human lives.
In the prior art, it in the production and processing of CPP film, needs by being cast extrusion moulding, using sided corona treatment, trimming
Processing finally is convenient for storing in a warehouse, transport and using using winder harvest is scroll-like；In addition, in order to reduce production cost and material
Recycle, generally the thin film leftover material formed after trimming is collected by exhaust fan and collection frame, collect and then will
Rim charge is transported to recyclable device and regeneration particle is crushed and be melt into rim charge.
However in existing production, film is wound after carrying out first trimming, there is problems:
First, as the winding time is longer, the diameter that the film (hereinafter referred to as winding film) wound on wind-up roll is formed is got over
Greatly, the angle that winding film is entered when film take-up also constantly changes, and cutter general not shutdown adjustment height in process of production,
And be fixedly disposed on certain altitude, thus the dynamics of cutter cutting film changes with the variation for receiving film membrane diameter, cuts
It cuts dynamics variation and external force is formd to the film of winding, be easy to cause film to deform due to by external force, influence film outgoing.
Second, rim charge is siphoned away rim charge by the negative pressure that exhaust fan generates, on the one hand, negative pressure will be neighbouring when collecting
Dust, impurity siphon away together with rim charge, so that rim charge has impurity, influence the recycling quality of rim charge；On the other hand, wind-force speed
Control with winding film winding speed controlled by distinct device, it is difficult to ensure that speed when rim charge is absorbed with wind film receipts
Volume speed is consistent, if the speed that rim charge is sucked away is greater than the rolling speed of winding film, rim charge forms pulling force to the film of winding,
So that deformation of thin membrane, influences film outgoing, and if the speed that rim charge is sucked away is less than the rolling speed of winding film, rim charge
It is scattered in outside collection frame, and then is wound in the rotating roller of winder, gently then hinder the winding work of winder, it is heavy then to wind
Machine breaks down.
Summary of the invention
The object of the present invention is to provide a kind of production and processing methods of CPP film wound in trimming, to improve CPP film
Outgoing simultaneously reduces the probability that breaks down during film take-up.
To achieve the above object, the present invention provides a kind of production and processing method of CPP film, which includes such as
Lower step:
One, mixing: PP raw material is sent into according to the proportion in batch mixer and carries out mixing；
Two, squeeze out curtain coating: the raw material mixed is thermally formed molten condition in extruder and squeezes out curtain coating, extruder
Extrusion temperature is 220-235 DEG C；
Three, precool: the film of extrusion, which enters in cooler bin, to be precooled, and the temperature in cooler bin is 25-35 DEG C；
Four, be cooled and shaped: being equipped with the chill roll that constantly rotates in cooler bin, chill roll constantly rotate and to CPP film into
Row cooling and shaping, the surface temperature of chill roll are 20-30 DEG C；
Five, increase surface adhesion force: film surface being handled using Corona roller；
Six, winding cutting: rotation wind-up roll winds film and mobile roller so that CPP film, which is wound on wind-up roll, forms winding film
Between be zero distance, in film take-up, the interlude of mobile roller rub winding film, and mobile roller both ends fixation set
Some cutters cut film, and the height that cutter stretches out mobile roller outer diameter is 0.1-0.5mm, and the rolling speed of wind-up roll is
3m/s-4m/s；
Seven, rim charge is wound: cutter cuts film to form rim charge, and rim charge moves down, by the rotation immediately below wind-up roll
Roller winding, rotating roller and wind-up roll rotate synchronously.
Compared with the existing technology, the technical program has the beneficial effect that
First, the mode wound after elder generation's trimming when changing the processing of CPP film in the prior art, using in winding
The mode of cutting carries out, and while so that becoming larger with receipts film membrane diameter, pushes mobile roller to horizontal direction along far from wind-up roll
Side is mobile, and the cutter on mobile roller constantly cuts rim charge with the progress of winding, ensure that cutter and winding film winding
Position it is opposing stationary, and then ensure cutter cutting film dynamics it is self-consistent, avoid cutter cutting to film quality
Influence.
Second, using the rotating roller rotated synchronously with wind-up roll so that after rim charge is cut, the rolling speed of rim charge at
The rolling speed of product film is consistent, avoid rim charge collect to finished films generate pulling force the case where, also avoid rim charge not and
When collect and caused by be wound on situation on wind-up roll, more avoid the case where being mixed with impurity in rim charge wrapup procedure.
Third changes the mode wound after first trimming, avoid after trimming occur film wound on wind-up roll it is irregular
The case where.
4th, mobile roller is parallel in the horizontal plane with wind-up roll, and mobile roller can offset with winding film, so that winding
When film is wound, mobile roller forms pressing force to winding film, neatly winds while on wind-up roll, also avoids in guarantee film
Film generates the case where bubble due to a lack of pressing force and in wrapup procedure, further avoids since there are bubble brings
The case where CPP deformation of thin membrane.
5th, the process for increasing and precooling is used in step 3, so that chill roll is located at temperature for 25-35 DEG C of cooling
In case, the phenomenon that avoiding cooling roller surface and surrounding air excessive temperature differentials and form condensation, be conducive to the molding of film.
Further, cleaning and auxiliary temperature-reducing, the surface of cleaner plate are carried out to chill roll by cleaner plate in the step 4
Temperature is 20-30 DEG C.Cleaner plate strikes off the chill roll surface impurity of rotation, so that chill roll is in cooling thin-film process
The film waste of adherency is removed, while the temperature of cleaner plate is maintained at 20-30 DEG C, so that cleaner plate connects with cooling roller surface
The heat absorption that film is transmitted to chill roll is fallen into a part while touching, plays the role of the auxiliary temperature-reducing to chill roll.
Further, the cleaner plate in the step 4 is fixedly connected with collecting box, and collecting box is equipped with stock guide.Stock guide
It will be imported into collecting box from the impurity waste material struck off on chill roll, impurity waste material avoided to fall on lower section chill roll and film
The case where.
Further, the mobile roller in the step 6 is fixedly connected with iron prop, and the iron prop slidably connects slip pipe, described
Slip pipe is fixedly connected with iron block far from iron prop one end, and pressure spring, the close iron prop side are connected between the iron block and iron prop
Slip pipe on be wound with hot-wire coil.
With becoming larger for film membrane diameter is received, winding film pushes mobile roller mobile, and the iron prop being fixedly connected with mobile roller is therewith
It is moved along slip pipe inner wall, is equivalent in moving process and is wound on the coil on iron prop surface and increases, thus hot-wire coil generates magnetic
The effective turn of field increases, so that magnetic force enhances, and elastic component also increases with compression elasticity, the magnetic force of increase and the bullet of increase
Power interacts and offsets, and ensure that mobile roller is basically unchanged the pressing force of winding film in moving process, avoids because of pressure
Clamp force it is excessive and caused by deformation of thin membrane the case where, also avoid that pressing force is too small, the non-uniform situation of winding.
Further, the cutter in the step 6 is round cutter.After circular shear blade makes cutter put into mobile roller, it is not required to
Angle of the blade with respect to film is adjusted, the time of adjustment blade has been saved.
Further, wind-up roll rotation is driven by motor in the step 6.Start motor, motor drives wind-up roll to turn
Dynamic, wind-up roll drives rotating roller to rotate synchronously, thus winding while realizing finished films and rim charge.
Further, the rotating roller in the step 7 and at least one is fixed between wind-up roll auxiliary cutter, it is described
Auxiliary cutter tentatively cuts the draw direction of rim charge, and the auxiliary cutter is fixedly connected on mobile roller bottom.
Because rotating roller and wind-up roll rotate synchronously so that rotating roller is in wrapup procedure, film diameter that rim charge is formed with
The diameter for winding film is always consistent, and cutter is assisted to be fixedly connected on mobile roller, and mobile roller is straight with winding film
Becoming larger for diameter and move, thus, auxiliary cutter rim charge film can be cut always；Furthermore stretching of the auxiliary cutter to rim charge
Direction is tentatively cut, and further chopping up to rim charge is equivalent to, and realizes the preliminary crushing to recycling rim charge.
Detailed description of the invention
Fig. 1 is the production and processing method schematic diagram of CPP of embodiment of the present invention film；
Fig. 2 is the axonometric drawing of rolling-up mechanism in Fig. 1；
Fig. 3 is the top view of rolling-up mechanism in Fig. 2；
Fig. 4 is the front view of rolling-up mechanism in Fig. 2；
Fig. 5 is the A-A cross-sectional view of rolling-up mechanism in Fig. 3.
Specific embodiment
It is further described below by specific embodiment:
Appended drawing reference in Figure of description includes: rack 1, batch mixer 2, extruder 3, cooler bin 4, chill roll 5, corona
Roller 6, wind-up roll 7, round cutter 8, mobile roller 9, rotating roller 10, cleaner plate 11, collecting box 12, stock guide 13, iron prop 14, slip pipe
15, pressure spring 16, hot-wire coil 17, auxiliary cutter 18, bracket 19, sliding rail 20, film 21, iron block 22.
Embodiment is basic if attached drawing 1 is to shown in Fig. 5:
The production and processing method of CPP film, the production and processing method are needed using a kind of CPP film organisation of working, which receives
Winding apparatus includes rack 1, and batch mixer 2, extruder 3 and rolling-up mechanism are equipped in rack 1, extruder 3 and winding in rack 1
Chill roll 5, Corona roller 6 are successively rotatably connected at position between mechanism；Chill roll 5 is located in cooler bin 4, and cooler bin 4 is solid
Surely it is connected in rack 1, collecting box 12 is further fixed in cooler bin 4, collecting box 12 is equipped with stock guide 13 and cleaner plate 11, leads
Flitch 13 is located at 11 lower section of cleaner plate, and cleaner plate 11 offsets with 5 outer surface of chill roll；Rolling-up mechanism includes wind-up roll 7, mobile roller
9 and rotating roller 10, mobile roller 9 is parallel in the horizontal plane with wind-up roll 7, and mobile roller 9 is located at the right side of wind-up roll 7, mobile roller 9
Two round cutters 8 are equipped with, rotating roller 10 is parallel on vertical plane with wind-up roll 7, and rotating roller 10 is being located at wind-up roll 7 just
Lower section, rotating roller 10 and wind-up roll 7 are driven by belt, and 9 level of mobile roller is slidably connected on the sliding rail 20 that rack 1 is equipped with,
Rotating roller 10 is rotatably connected in rack 1；Mobile roller 9 is fixedly connected with iron prop 14, and iron prop 14 slidably connects slip pipe 15, slip pipe
15 are fixed in rack 1 by bracket 19, and slip pipe 15 is fixedly connected with iron block 22, iron block 22 and iron prop 14 far from 14 one end of iron prop
Between be connected with pressure spring 16, close to 14 side of iron prop slip pipe 15 on be wound with hot-wire coil 17；Between rotating roller 10 and wind-up roll 7
Two auxiliary cutters 18 are fixed with, auxiliary cutter 18 is symmetrically fixed on mobile roller 9, stretching side of the auxiliary cutter 18 to rim charge
To tentatively being cut；Motor is fixed in rack 1, the output shaft of motor is connect with 7 flat key of wind-up roll.
The production and processing method includes the following steps:
One, mixing: PP raw material is sent into according to the proportion in batch mixer 2 and carries out mixing；
Two, squeeze out curtain coating: the raw material mixed is thermally formed molten condition in extruder 3 and squeezes out curtain coating, extruder 3
Extrusion temperature be 225 DEG C；
Three, precool: the film 21 of extrusion, which enters in cooler bin 4, to be precooled, and the temperature in cooler bin 4 is 30 DEG C；
Four, be cooled and shaped: the chill roll 5 constantly rotated in cooler bin 4 carries out cooling and shaping to film 21, chill roll 5
Surface temperature is 25 DEG C, and the temperature of the cleaner plate 11 to offset with chill roll 5 is 25 DEG C, and cleaner plate 11 is by 5 table of chill roll of rotation
21 waste material of film in face is struck off, and the waste material scraped is fallen on stock guide 13, as the structure landing of stock guide 13 enters receipts
In header 12；
Five, increase surface adhesion force: 21 surface of film being handled using Corona roller 6；
Six, winding cutting: rotation wind-up roll 7, so that CPP film, which is wound on wind-up roll 7, forms winding film, when initial, winding
Roller 7 offsets with mobile roller 9, and when wind-up roll 7 winds film 21 under motor drive, film 21 has a thickness so that mobile roller 9
Pressing force is generated to wind-up roll 7, while film 21 gives mobile roller 9 one speed far from 7 direction of wind-up roll, 9 quilt of mobile roller
It pushes and drives iron prop 14 mobile, because hot-wire coil 17 is wound on slip pipe 15, so the process that iron prop 14 is mobile to 15 bottom of slip pipe
In, active coil the number of turns that hot-wire coil 17 generates magnetic field is increased, so that the magnetic that hot-wire coil 17 and iron prop 14 are formed
Power enhancing, the elastic force that magnetic force is compressed to form with pressure spring 16 just balance；And then it ensure that the speed that mobile roller 9 is kept constant
It is moved along the direction far from wind-up roll 7, ensure that the compression wound between film that the interlude of mobile roller 9 and diameter become larger
Power is constant, and when film 21 is wound, the cutter that 9 two sides of mobile roller are fixed with cuts film 21, and cutter stretches out movement
The height of 9 outer diameter of roller is 0.25mm, and the rolling speed of wind-up roll 7 is 3.5m/s；
Seven, rim charge is wound: round cutter 8 forms rim charge to the cutting of film 21, rim charge move down during by with shifting
The auxiliary cutter 18 of dynamic 9 synchronizing moving of roller is cut along the draw direction of film 21, is equivalent to further chopping up to rim charge, is realized
Preliminary crushing to recycling rim charge.
What has been described above is only an embodiment of the present invention, and well known characteristic and common sense do not describe excessively herein in scheme.
It should be pointed out that for those skilled in the art, under the premise of not departing from the present invention, can also make several deformations and
It improves.These also should be considered as protection scope of the present invention, these all will not influence the reality of effect and patent that the present invention is implemented
The property used.The scope of protection required by this application should be based on the content of the claims, the specific embodiment etc. in specification
Record the content that can be used for explaining claim.
Claims (7)
- The production and processing method of 1.CPP film, it is characterised in that: the production and processing method includes the following steps:One, mixing: PP raw material is sent into according to the proportion in batch mixer and carries out mixing；Two, squeeze out curtain coating: the raw material mixed is thermally formed molten condition in extruder and squeezes out curtain coating, the extrusion of extruder Temperature is 220-235 DEG C；Three, precool: the film of extrusion, which enters in cooler bin, to be precooled, and the temperature in cooler bin is 25-35 DEG C；Four, it is cooled and shaped: being equipped with the chill roll constantly rotated in cooler bin, chill roll is constantly rotated and carried out to CPP film cold But it is formed, the surface temperature of chill roll is 20-30 DEG C；Five, increase surface adhesion force: film surface being handled using Corona roller；Six, winding cutting: rotation wind-up roll is wound between film and mobile roller so that CPP film, which is wound on wind-up roll, forms winding film For zero distance, in film take-up, the interlude of mobile roller rubs the film of winding, and what mobile roller both ends were fixed with Cutter cuts film, and the height that cutter stretches out mobile roller outer diameter is 0.1-0.5mm, and the rolling speed of wind-up roll is 3m/ s-4m/s；Seven, rim charge is wound: cutter cuts film to form rim charge, and rim charge moves down, and is received by the rotating roller immediately below wind-up roll Volume, rotating roller and wind-up roll rotate synchronously.
- 2. the production and processing method of CPP film according to claim 1, it is characterised in that: pass through cleaning in the step 4 Plate carries out cleaning and auxiliary temperature-reducing to chill roll, and the surface temperature of cleaner plate is 20-30 DEG C.
- 3. the production and processing method of CPP film according to claim 2, it is characterised in that: the cleaner plate in the step 4 It is fixedly connected with collecting box, collecting box is equipped with stock guide.
- 4. the production and processing method of CPP film according to claim 3, it is characterised in that: the mobile roller in the step 6 It is fixedly connected with iron prop, the iron prop slidably connects slip pipe, and the slip pipe is fixedly connected with iron block far from iron prop one end, described It is connected with pressure spring between iron block and iron prop, is wound with hot-wire coil on the slip pipe of the iron prop side.
- 5. the production and processing method of CPP film according to claim 4, it is characterised in that: the cutter in the step 6 is Round cutter.
- 6. the production and processing method of CPP film according to claim 5, it is characterised in that: pass through motor in the step 6 Drive wind-up roll rotation.
- 7. the production and processing method of CPP film according to claim 6, it is characterised in that: the rotating roller in the step 7 At least one is fixed between wind-up roll auxiliary cutter, the auxiliary cutter tentatively cuts the draw direction of rim charge It cuts, the auxiliary cutter is fixedly connected on mobile roller bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811289645.6A CN109228423B (en) | 2018-10-31 | 2018-10-31 | Production and processing method of CPP film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811289645.6A CN109228423B (en) | 2018-10-31 | 2018-10-31 | Production and processing method of CPP film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109228423A true CN109228423A (en) | 2019-01-18 |
| CN109228423B CN109228423B (en) | 2020-10-23 |
Family
ID=65079991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811289645.6A Active CN109228423B (en) | 2018-10-31 | 2018-10-31 | Production and processing method of CPP film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109228423B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110466130A (en) * | 2019-08-19 | 2019-11-19 | 陶惠芹 | A kind of PE winding film production and processing method |
| CN112454614A (en) * | 2020-11-04 | 2021-03-09 | 瞿飞 | Miniature table type casting machine for experiment |
| WO2020177786A3 (en) * | 2020-05-07 | 2021-03-18 | 南京贝迪电子有限公司 | Lcp film production apparatus and method |
| CN113370488A (en) * | 2021-05-20 | 2021-09-10 | 福建宝利薄膜有限公司 | Casting film preparation equipment and process flow based on CPP |
| CN116533482A (en) * | 2023-05-10 | 2023-08-04 | 新郑市吉龙包装材料有限公司 | Resin coating packaging film production line and production process thereof |
| CN119505316A (en) * | 2024-11-28 | 2025-02-25 | 南通苍峰新材料科技有限公司 | A method for producing tear-resistant and heat-resistant CPP film for electronic screen protector |
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| CN203612704U (en) * | 2013-12-02 | 2014-05-28 | 山东大学苏州研究院 | Film scrap edge online synchronous recycling device |
| CN204280855U (en) * | 2014-12-05 | 2015-04-22 | 永安市三源丰水溶膜有限公司 | A kind of trimming wrap-up of PVA film |
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| CN1074400A (en) * | 1991-12-13 | 1993-07-21 | 庄臣及庄臣有限公司 | Be used for flexible web is become the method and apparatus of rectangular band |
| CN102275317A (en) * | 2011-08-12 | 2011-12-14 | 重庆和泰塑胶有限公司 | Three-stage stretching process for cast film |
| CN203612704U (en) * | 2013-12-02 | 2014-05-28 | 山东大学苏州研究院 | Film scrap edge online synchronous recycling device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110466130A (en) * | 2019-08-19 | 2019-11-19 | 陶惠芹 | A kind of PE winding film production and processing method |
| WO2020177786A3 (en) * | 2020-05-07 | 2021-03-18 | 南京贝迪电子有限公司 | Lcp film production apparatus and method |
| CN112454614A (en) * | 2020-11-04 | 2021-03-09 | 瞿飞 | Miniature table type casting machine for experiment |
| CN112454614B (en) * | 2020-11-04 | 2022-04-01 | 锡华机械科技(东莞)有限公司 | Miniature table type casting machine for experiment |
| CN113370488A (en) * | 2021-05-20 | 2021-09-10 | 福建宝利薄膜有限公司 | Casting film preparation equipment and process flow based on CPP |
| CN116533482A (en) * | 2023-05-10 | 2023-08-04 | 新郑市吉龙包装材料有限公司 | Resin coating packaging film production line and production process thereof |
| CN119505316A (en) * | 2024-11-28 | 2025-02-25 | 南通苍峰新材料科技有限公司 | A method for producing tear-resistant and heat-resistant CPP film for electronic screen protector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109228423B (en) | 2020-10-23 |
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