CN109968696A - A kind of preparation method and system of high consistency diaphragm - Google Patents
A kind of preparation method and system of high consistency diaphragm Download PDFInfo
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- CN109968696A CN109968696A CN201910172762.2A CN201910172762A CN109968696A CN 109968696 A CN109968696 A CN 109968696A CN 201910172762 A CN201910172762 A CN 201910172762A CN 109968696 A CN109968696 A CN 109968696A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 55
- 238000005266 casting Methods 0.000 claims abstract description 97
- 238000010438 heat treatment Methods 0.000 claims abstract description 63
- 238000007766 curtain coating Methods 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims description 45
- 239000002131 composite material Substances 0.000 claims description 40
- 238000012545 processing Methods 0.000 claims description 29
- 230000008569 process Effects 0.000 claims description 16
- 150000001875 compounds Chemical class 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 22
- 238000007669 thermal treatment Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 27
- 230000035699 permeability Effects 0.000 description 7
- 230000003068 static effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000010998 test method Methods 0.000 description 5
- 238000002425 crystallisation Methods 0.000 description 4
- 230000008025 crystallization Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- MEYZYGMYMLNUHJ-UHFFFAOYSA-N tunicamycin Natural products CC(C)CCCCCCCCCC=CC(=O)NC1C(O)C(O)C(CC(O)C2OC(C(O)C2O)N3C=CC(=O)NC3=O)OC1OC4OC(CO)C(O)C(O)C4NC(=O)C MEYZYGMYMLNUHJ-UHFFFAOYSA-N 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/02—Thermal after-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/755—Membranes, diaphragms
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
This application discloses the preparation methods and system of a kind of high consistency diaphragm.The preparation method of the high consistency diaphragm of the application, be included in curtain coating film roll be heat-treated when, it is not necessary that entire volume casting films are directly placed into oven, but curtain coating film roll is unreeled outside oven, make it through oven, and the delivery roll of several dislocation arrangements is set in an oven, the path of oven is passed through for extending casting films, is heat-treated when casting films move in an oven.The preparation method of the high consistency diaphragm of the application is heat-treated it when casting films pass through oven, avoids entire volume casting films and is heat-treated non-uniform problem；The uniformity and thermal treatment quality of heat treatment are not only increased, moreover, relative to the mode that entire volume casting films are heat-treated, it is shorter the time required to the preparation method heat treatment of the application, substantially increase production efficiency.
Description
Technical field
This application involves battery diaphragm preparation fields, a kind of preparation method more particularly to high consistency diaphragm and are
System.
Background technique
It is two-way that lithium ion battery separator according to preparation process can be divided into dry method simple tension, dry method biaxial tension and wet process
Stretch three kinds of techniques.In high-end dynamic field, the advantages such as dry method simple tension is at low cost with its, consistency is excellent, safety is good are obtained
To being widely applied, especially in large current charge and high power battery field, dry method simple tension diaphragm has absolutely excellent
Gesture.
Dry method simple tension can be divided into curtain coating, heat treatment according to process flow and stretch three processes of pore-forming.It adopts at present
Heat treatment mode is first to wind casting films, and winding length is generally thousands of rice, is then again put into entire volume casting films roasting
It is heat-treated in case.For large-scale mass production, an oven is unable to meet production demand, it will usually using multiple
Oven is heat-treated to a batch of different casting films volumes respectively；And the temperature and heating efficiency of different ovens are difficult to completely
Unanimously, this results in poor with a batch of different curtain coating film roll consistency.Even, in same volume casting films, since heat is transmitted
Relationship, there is also the bad problems of thermal effectiveness and quality conformance；It especially winds in the longer situation of length, volume is outer
All there is larger difference on the heat treatment time and temperature of layer and inner layer, this directly affects the one of the battery diaphragm of subsequent preparation
Cause property.In addition, the existing technological process of production is also to be put into the casting films entire volume of each layer for multilayer composite membrane
Oven is heat-treated, and is unreeled again after the completion of heat treatment, each layer is combined with each other to form composite layer, then composite layer is wound,
It is transferred to stretching station, unreels, stretch, multilayer composite membrane is made.Likewise, the curtain coating film roll of each layer is baked in different respectively
It is heat-treated in case, consistency is poor, influences diaphragm quality.
In addition, in existing heat treatment mode, in order to ensure curtain coating film roll inner layer also can be effectively heat-treated,
The baking for usually requiring the progress long period, seriously affects production efficiency.
Summary of the invention
The purpose of the application is to provide the preparation method and system of a kind of new high consistency diaphragm.
To achieve the goals above, the application uses following technical scheme:
The one side of the application discloses a kind of preparation method of high consistency diaphragm, is included in and carries out heat to curtain coating film roll
When processing, it is not necessary that entire volume casting films are directly placed into oven, but curtain coating film roll is unreeled outside oven, made it through roasting
Case, and the delivery roll of several dislocation arrangements is set in an oven, the path of oven is passed through for extending casting films, casting films exist
It is heat-treated when being moved in oven.At the beginning of the casting films of the application refer to the completion squeezed out after the processing of polyolefinic raw materials fusion plastification
Beginning crystallization, there are no the films for forming micropore, are cast the film roll of the rolling formation of film roll, that is, casting films.
It should be noted that the preparation method of the application, key is when being heat-treated, and is not to be cast entire volume
Film roll is put into oven, but casting films are heat-treated by delivery roll by oven, is avoided casting films entire volume and is carried out heat
Outer layer and the even problem of inner layer uneven heating, improve the diaphragm quality of production when processing.The preparation method of the application is using dynamic
Heat treatment can be continued with an oven or is heat-treated simultaneously to multiple casting films volume, and the consistency of heat treatment is good.And
And due to being that casting films are directly over oven and are heat-treated, the thickness of casting films is relatively thin, can be in a relatively short period of time
Complete heat treatment；In a kind of implementation of the application, it is small that heat treatment needs at least 48 are carried out using traditional casting films entire volume
When；And the preparation method of the application is used, the heat treatment of equivalent casting films can be completed within 8 hours；It substantially increases
Production efficiency.
It should also be noted that, the quantity for the delivery roll being arranged in oven can according to need the time being heat-treated and
It is fixed；In principle, the time that casting films are heat-treated in an oven is exactly that casting films enter oven to this section exported by oven
Time, the time depend on two factors, i.e., casting films are by the distance and speed of oven, and wherein speed directly affects production effect
Rate, and the size of oven is also to limit；It therefore,, can be in the case where oven size is certain in the case where ensuring speed
Extend distance of the casting films by oven by the delivery roll of dislocation arrangement, to reach required heat treatment time.
Preferably, the preparation method of the application further includes after heat treatment, without being wound, directly being incited somebody to action by delivery roll
The casting films of heat treatment are imported in stretching device and are stretched.
It should be noted that after existing heat treatment mode needs entire volume to be heat-treated, then take out and carry out subsequent behaviour
Make；And the preparation method of the application, it is heat-treated in dynamic process due to being casting films, it can be in heat treatment
Stretch processing is carried out simultaneously, i.e., for a roll of casting films, a part is being heat-treated, after having handled and then
Stretch processing is carried out, and in stretch processing, subsequent a part continues to be heat-treated, and which further improves productions to imitate
Rate.
Preferably, the preparation method of the application further includes carrying out multilayer film combined processing before the heat treatment, specifically, will
Multiple casting films through MULTILAYER COMPOSITE device are combined into MULTILAYER COMPOSITE casting films after unreeling by each curtain coating film roll of composition multilayer film, so
Afterwards, directly MULTILAYER COMPOSITE casting films are imported in oven and is heat-treated.
It should be noted that existing laminated diaphragm preparation method is, the casting films difference entire volume of each tunic carries out hot place
Reason, then unreels, combined processing, winding again, stretch processing station is transferred to after winding and is unreeled, stretched, wound.This Shen
Preparation method please can prepare single-layer septum, can also prepare laminated diaphragm；The application prepares the method for laminated diaphragm and shows
Have unlike method, the application is first to unreel the casting films for each layer for forming laminated diaphragm, be combined with each other, then right again
MULTILAYER COMPOSITE casting films are heat-treated；This just effectively avoids each layer and is heat-treated inconsistent problem；And after being heat-treated
And then it is stretched, reduces process, improve production efficiency.
The another side of the application discloses a kind of oven of preparation method for the application, and the oven is for casting films warm
It handles, the delivery roll of several dislocation arrangements is provided in oven, casting films or MULTILAYER COMPOSITE casting films pass through all or part
Delivery roll moves in an oven, and realizes heat treatment in the process of moving.
It should be noted that existing heat treatment oven, is directly to be divided into multilayered structure, every layer is placed a roll or more respectively
Volume casting films are heat-treated；And oven designs are directly a cavity structure, several biographies of the inside dislocation arrangement by the application
Defeated roller increases the residence time of casting films in an oven so that casting films are tortuous mobile up and down in an oven, to reach heat treatment
Effect.
The application's discloses a kind of preparation system of high consistency diaphragm, including unwinding device and oven on one side again；It puts
Winding apparatus is used to unreel curtain coating film roll；Oven receives the casting films unreeled, and is provided with several dislocation in an oven
The delivery roll of arrangement passes through the path of oven for extending casting films, is heat-treated when casting films move in an oven.
It should be noted that the preparation system of the application, key is to improve existing heat treatment oven, tool
Body, be a cavity structure in the preparation system of the application, inside oven, and the biography of several dislocation arrangements is arranged in oven
Defeated roller；Such purpose is to extend the path that casting films pass through oven, in the case where ensureing casting films transmission speed, so that
The time long enough of casting films in an oven, to meet the needs of heat treatment.
Preferably, the preparation system of the application further includes stretching device；Stretching device technique accepts oven, after heat treatment,
Without being wound, directly heat-treated products are imported in stretching device by delivery roll and carry out stretch processing.
It should be noted that the preparation system of the application, for the feature of Dynamic heat-treatment, after heat treatment and then into
Row stretch processing；Therefore, the preparation system of further the application further includes stretching device, is directly arranged at the output of oven
End directly carries out stretch processing to the output product of oven, saves technique, improve production efficiency.
Preferably, the preparation system of the application further includes wrap-up；Wrap-up technique accept stretching device, for pair
Stretch processing product is wound.
It should be noted that the preparation system of the application is unreeled relative to existing production technology and system from casting films
It stretches and completes to the end, whole process is accomplished without any letup, and production efficiency is substantially increased.
Preferably, the preparation system of the application further includes MULTILAYER COMPOSITE device, and MULTILAYER COMPOSITE device is set to unwinding device
Between oven；Unwinding device includes several unreeling machines, and each unreeling machine is used to unreel a casting films volume；Multilayer is multiple
It closes device technique and accepts unwinding device, the casting films for unreeling to multiple unreeling machines carry out combined processing, form MULTILAYER COMPOSITE
Casting films；The MULTILAYER COMPOSITE casting films of MULTILAYER COMPOSITE device output are transported in oven through delivery roll again to be heat-treated.
It is appreciated that MULTILAYER COMPOSITE device only when needing to prepare laminated diaphragm just use, if single layer every
Film does not need MULTILAYER COMPOSITE device then, is considered as transmission mechanism.
Due to using the technology described above, the beneficial effects of the present application are as follows:
The preparation method of the high consistency diaphragm of the application is heat-treated it when casting films pass through oven,
It avoids entire volume casting films and is heat-treated non-uniform problem；The uniformity and thermal treatment quality of heat treatment are not only increased, moreover,
It is shorter the time required to the preparation method heat treatment of the application relative to the mode that entire volume casting films are heat-treated, it greatly improves
Production efficiency.
Detailed description of the invention
Fig. 1 is the operation schematic diagram of each process flow in existing production method, wherein A figure is the oven of heat treatment
Operation schematic diagram, B figure are the operation schematic diagrams of MULTILAYER COMPOSITE device, and C figure is the operation schematic diagram of stretching device；
Fig. 2 is the operation schematic diagram of the preparation system of high consistency diaphragm in the embodiment of the present application.
Specific embodiment
Existing dry method simple tension technique prepares laminated diaphragm, as shown in Figure 1,11 is roasting for static heat treatment in Fig. 1
Case, 12 be cast film roll, 13 be heat treatment after casting films unreeling machine, 14 be heat treatment after casting films MULTILAYER COMPOSITE device,
15 it is MULTILAYER COMPOSITE film winder, 16 be multilayer complex films unreeling machine, 17 be stretching device, 18 is diaphragm winder；Usually according to
Sequence includes three heat treatment, MULTILAYER COMPOSITE and stretch processing steps, although the oven of heat treatment can handle 4-8 curtain coating simultaneously
Film roll, still, an oven are difficult to meet large-scale batch production, also, casting films entire volume carries out heat as previously mentioned
Handle the problems such as poor there is also consistency.
The improved preparation method of the application, as shown in Figure 2, on the one hand, be directly placed at existing entire volume casting films roasting
The mode that static heat treatment is carried out in case, is improved to that casting films is allowed to be transferred through oven, and the process moved in an oven carries out heat
Processing solves the problems, such as that entire volume heat treatment is non-uniform；On the other hand, change heat treatment, MULTILAYER COMPOSITE, stretch processing completely
Casting films are first carried out MULTIPLE COMPOSITE by process sequence, and then another rise is heat-treated, then is stretched, and each step
It only needs to accept using delivery roll sequence, saves process, improve production efficiency.In Fig. 2,21 for casting films unwinding device,
22 it is casting films MULTILAYER COMPOSITE device, 23 be Dynamic heat-treatment oven, 24 be stretching device, 25 is wrap-up.
The application is described in further detail below by specific embodiments and the drawings.Following embodiment is only to the application
It is further described, should not be construed as the limitation to the application.
Embodiment
The preparation method of the high consistency diaphragm of this example, as shown in Fig. 2, be included in curtain coating film roll be heat-treated when,
It is not necessary that entire volume casting films are directly placed into oven, but curtain coating film roll is unreeled outside oven, makes it through oven, and roasting
The delivery roll of several dislocation arrangements is set in case, the path of oven is passed through for extending casting films, casting films are moved in an oven
It is heat-treated when dynamic.After heat treatment, without being wound, directly the casting films of heat treatment is imported by delivery roll and are stretched
It is stretched in device.For multilayer composite membrane, the preparation method of this example further includes carrying out multilayer before the heat treatment
Multiple casting films are combined into after unreeling each curtain coating film roll for forming multilayer film through MULTILAYER COMPOSITE device more by film combined processing
The compound casting films of layer, as shown in Fig. 2, then, directly importing in oven and being heat-treated by MULTILAYER COMPOSITE casting films.
By taking the preparation of laminated diaphragm as an example, the preparation method of this example, as shown in Fig. 2, specifically including following steps:
(1) polyolefinic raw materials are subjected to fusion plastification processing, the cooling film forming of sharp cooling roll, high speed traction is entered after mouth mold
It is wound into winding system, obtains curtain coating film roll；In this process, polyolefin film completes primary crystallization；
(2) coiled film roll is unreeled, compound, formation multilayer complex films is carried out into compounding machine；
(3) film roll after will be compound imports the oven for being set with certain temperature, the heat treatment of the side Bian Fangjuan, i.e. progress Dynamic Thermal
Processing, in this process, polyolefin film crystal is further perfect, prepares to stretch pore-forming；
(4) film that heat treatment is completed enters stretching device, and each section of temperature and the speed ratio of roller is arranged by technique, is drawn
Processing is stretched, the film for stretching completion forms micropore, that is, completes the preparation of lithium ion battery separator.
In order to realize that the preparation method of this example, this example further have developed the preparation system of corresponding high consistency diaphragm,
The system is as shown in Fig. 2, include unwinding device, MULTILAYER COMPOSITE device, oven, stretching device and wrap-up.
This example is directed to the preparation of laminated diaphragm, and unwinding device includes several unreeling machines, and each unreeling machine is used to flow one
Prolong film roll to be unreeled；MULTILAYER COMPOSITE device technique accepts unwinding device, and the casting films for unreeling to multiple unreeling machines carry out
Combined processing forms MULTILAYER COMPOSITE casting films；Oven technique accepts MULTILAYER COMPOSITE device, for carrying out hot place to Multi-layer cast film
Reason；Stretching device technique accepts oven, after heat treatment, without being wound, is directly imported heat-treated products by delivery roll
Stretch processing is carried out in stretching device.It is directly wound by wrap-up after the completion of stretch processing, i.e., acquisition this field is high by one
Cause property battery diaphragm.
Wherein, the inside of oven is a cavity structure, the delivery roll of several dislocation arrangements is provided with, for prolonging
Long casting films pass through the path of oven, and then extend the time of casting films in an oven, progress when casting films move in an oven
Heat treatment, adjustment casting films pass through the path of delivery roll, the heat treatment time of adjustable casting films.
According to method and system made above, this example is specifically prepared for 20 layer polypropylene diaphragms, and the specification of diaphragm is
1100mm*1200m。
At the same time, this example is prepared for the diaphragm of same size in such a way that traditional casting films entire volume is heat-treated
As a comparison.It is that first each layer casting films are heat-treated also, in processing step, then compound, stretching again.
It is vertical that this example comparison diaphragm that respectively prepared by the diaphragm to the preparation of this example test method and conventional method has carried out diaphragm
To ventilative difference, to detect the consistency of diaphragm.Specifically, the method for the longitudinal ventilative difference of diaphragm are as follows: after diaphragm is cut
A sample is taken every 10m on longitudinal, permeability test is carried out, the permeability test result of all samples is recorded and calculated most
Big value and minimum value, subtracting minimum value with maximum value is longitudinal gas permeability difference.
It should be noted that the high consistency of this example diaphragm, refers between layers, it is ventilative on every layer of length direction
The consistency of the performances such as property, porosity and aperture.Due to being heated in rolls in existing traditional static heat treatment, inner layer and outer layer and
Sandwich layer is inconsistent on heated time, makes the difference of crystallization time, leads to the difference in the growth rate and wafer thickness of chip
It is different, thus in the inconsistent of microcosmic upper performance microcellular structure, in the difference for macroscopically showing as gas permeability and porosity.And this example
Dynamic heat-treatment due to each layer it is heated the same, and every layer is heated in the longitudinal direction also consistent, is avoided well because being heated not
Equally caused difference, and can effectively improve production efficiency.Therefore, this example is ventilative poor by the longitudinal direction of contrast test diaphragm
It is different, characterize the consistency of diaphragm.
In addition, this example also counted respectively this example test method and conventional method technique adjustment frequency, from be cast to draw
Stretch the difference of operator needed for completing required time, the production of same size diaphragm etc..Wherein, technique adjustment frequency is main
It is embodied in, due to the difference that static heat treatment outer layer, inner layer and sandwich layer are heated, leads to the difference of crystallization rate and rate of crystal growth
It is different, it will appear the difference of gas permeability after the stretch, in order to reduce the difference of gas permeability, after each stretching volume change of lap, all need
What very important person was is finely adjusted technological parameter to reduce the difference of gas permeability, if not adjusting, it may appear that ventilative difference exceeds standard
Control range causes product unqualified.And the test method of this example is then without the problem, therefore does not need to adjust.
The above test and statistical result are as shown in table 1.
1 Dynamic heat-treatment technique of table and static heat treatment process ration
| Project | Dynamic heat-treatment | Static heat treatment |
| Technique adjustment frequency | Without adjustment | Frequently adjustment |
| Required time is stretched from being cast to | < 8h | > 48h |
| The ventilative difference in diaphragm longitudinal direction | < 20s/100m | > 50s/100m |
| Personnel needed for producing | 6 people | 10 people |
In table 1, entire volume casting films are put into the preparation method being heat-treated in oven by static heat treatment, that is, traditional；It is dynamic
State heat treatment is the preparation method of the high consistency diaphragm of this example.Table 1 the results show that this example test method preparation diaphragm,
Its consistency is apparently higher than traditional preparation methods；Also, without carrying out technique adjustment in the entire production process of this example test method,
It is also foreshortened within 8h from the production time for being cast to stretching, substantially increases production efficiency；At the same time, the life of same size
Required operator decreases about 40% in production, greatly reduces labor cost.
The foregoing is a further detailed description of the present application in conjunction with specific implementation manners, and it cannot be said that this Shen
Specific implementation please is only limited to these instructions.For those of ordinary skill in the art to which this application belongs, it is not taking off
Under the premise of from the application design, a number of simple deductions or replacements can also be made.
Claims (8)
1. a kind of preparation method of high consistency diaphragm, it is characterised in that: be included in curtain coating film roll be heat-treated when, be not necessarily to
Entire volume casting films are directly placed into oven, but are unreeled curtain coating film roll outside oven, make it through oven, and in an oven
The delivery roll of several dislocation arrangements is set, the path of oven is passed through for extending casting films, when casting films move in an oven
It is heat-treated.
2. preparation method according to claim 1, it is characterised in that: after further including the heat treatment, without being wound,
Directly the casting films of heat treatment are imported in stretching device by delivery roll and are stretched.
3. preparation method according to claim 1 or 2, it is characterised in that: further include carrying out multilayer film before the heat treatment
Combined processing, specifically, through MULTILAYER COMPOSITE device that multiple casting films are compound after each curtain coating film roll for forming multilayer film is unreeled
At MULTILAYER COMPOSITE casting films, then, directly MULTILAYER COMPOSITE casting films is imported in oven and are heat-treated.
4. a kind of oven for the described in any item preparation methods of claim 1-3, it is characterised in that: the oven is for flowing
Prolong film heat treatment, the delivery roll of several dislocation arrangements is provided in oven, casting films or MULTILAYER COMPOSITE casting films pass through whole
Or fractional transmission roller moves in an oven, and realizes heat treatment in the process of moving.
5. a kind of preparation system of high consistency diaphragm, it is characterised in that: including unwinding device and oven；
The unwinding device is used to unreel curtain coating film roll；
The oven receives the casting films unreeled, and is provided with the delivery roll of several dislocation arrangements in an oven, for extending
Casting films pass through the path of oven, are heat-treated when casting films move in an oven.
6. preparation system according to claim 5, it is characterised in that: further include stretching device；
The stretching device technique accepts the oven, after heat treatment, without being wound, will be directly heat-treated by delivery roll
Product imports in stretching device and carries out stretch processing.
7. preparation system according to claim 6, it is characterised in that: further include wrap-up；
The wrap-up technique accepts the stretching device, for winding to stretch processing product.
8. according to the described in any item preparation systems of claim 5-7, it is characterised in that: it further include MULTILAYER COMPOSITE device, it is described
MULTILAYER COMPOSITE device is set between the unwinding device and the oven；
The unwinding device includes several unreeling machines, and each unreeling machine is used to unreel a casting films volume；
The MULTILAYER COMPOSITE device technique accepts the unwinding device, and the casting films for unreeling to multiple unreeling machines carry out compound
Processing forms MULTILAYER COMPOSITE casting films；The MULTILAYER COMPOSITE casting films of MULTILAYER COMPOSITE device output are transported to through delivery roll described again
It is heat-treated in oven.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910172762.2A CN109968696A (en) | 2019-03-07 | 2019-03-07 | A kind of preparation method and system of high consistency diaphragm |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910172762.2A CN109968696A (en) | 2019-03-07 | 2019-03-07 | A kind of preparation method and system of high consistency diaphragm |
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| CN109968696A true CN109968696A (en) | 2019-07-05 |
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| CN201910172762.2A Pending CN109968696A (en) | 2019-03-07 | 2019-03-07 | A kind of preparation method and system of high consistency diaphragm |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114179403A (en) * | 2022-02-15 | 2022-03-15 | 深圳市博盛新材料有限公司 | Battery diaphragm manufacturing system of rechargeable battery and manufacturing method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202367948U (en) * | 2011-12-01 | 2012-08-08 | 深圳市星源材质科技股份有限公司 | Heat treatment device |
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| CN209794611U (en) * | 2019-03-07 | 2019-12-17 | 武汉中兴创新材料技术有限公司 | Preparation system and oven of high uniformity diaphragm |
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| CN202367948U (en) * | 2011-12-01 | 2012-08-08 | 深圳市星源材质科技股份有限公司 | Heat treatment device |
| CN102956859A (en) * | 2012-11-28 | 2013-03-06 | 广东工业大学 | Preparation method for multi-layered polyolefin composite microporous membrane |
| JP2014226800A (en) * | 2013-05-20 | 2014-12-08 | コニカミノルタ株式会社 | Production method of optical film |
| CN204054687U (en) * | 2014-08-13 | 2014-12-31 | 江苏安瑞达新材料有限公司 | A kind of burning optimization on line device being applicable to lithium battery diaphragm and producing |
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| CN205836043U (en) * | 2016-07-25 | 2016-12-28 | 武汉惠强新能源材料科技有限公司 | A kind of multilamellar many film roll lithium battery diaphragm burning optimization on line hybrid system |
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| CN114179403A (en) * | 2022-02-15 | 2022-03-15 | 深圳市博盛新材料有限公司 | Battery diaphragm manufacturing system of rechargeable battery and manufacturing method thereof |
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