CN106964526A - Two-sided extrusion coating method and its double spread device based on microporous substrate - Google Patents
Two-sided extrusion coating method and its double spread device based on microporous substrate Download PDFInfo
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- CN106964526A CN106964526A CN201710348334.1A CN201710348334A CN106964526A CN 106964526 A CN106964526 A CN 106964526A CN 201710348334 A CN201710348334 A CN 201710348334A CN 106964526 A CN106964526 A CN 106964526A
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- microporous substrate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/04—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/14—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation involving heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/26—Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
- B05D1/265—Extrusion coatings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
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- Application Of Or Painting With Fluid Materials (AREA)
- Coating Apparatus (AREA)
Abstract
A kind of two-sided extrusion coating method and its double spread device based on microporous substrate, its device includes unwinding device, wrap-up, trailer system and baking oven, the first extrusion coated head and the second extrusion coated head, and the projection of the spraying nozzle of the first extrusion coated head and the spraying nozzle of the second extrusion coated head on microporous substrate is non-overlapped；The tension force of the corresponding microporous substrate vicinity of spraying nozzle of first extrusion coated head is F1, the tension force at any point in addition near the microporous substrate corresponding to the coating head of the first extrusion coated head of microporous substrate is F2, and the ratio that the second extrusion coated head is arranged on the F1 and F2 of microporous substrate is 1:0.8—1:0.4 F2 corresponding positions.The present invention have Painting effect preferably, coating quality it is higher, while the higher advantage of coating efficiency.
Description
Technical field
It is especially a kind of the present invention relates to the two-sided extrusion coating method and its double spread device for being suitable for microporous substrate
It is suitable in lithium battery manufacturing process in the two-sided extrusion coating method and its double spread device of microporous substrate.
Background technology
In the production of lithium battery, the production of positive pole substrate and negative pole substrate uses coating process.Existing coating
Method has two kinds, is coated with roll-type batch (-type) coating method and squash type coating method, both coating methods respectively, wherein
Again with squash type coating method because coating accuracy is high, and it is easily controlled, and is widely welcome.
When squash type coating method on the two sides of base material to be coated, generally there is two ways, one kind is first to base
The one side of material is coated, and after drying, then the another side of base material is coated and dried；The realization of this mode is typically all needed
Two groups of coating apparatus are wanted, successively the two sides of base material is coated and dried, but it is the drawbacks of such a mode, use is set
Standby to take up an area greatly, initial stage, input was big, and utilization rate of equipment and installations is not high；Another mode is that two coatings are set before drying box
Head, wherein the first extrusion coated head coordinates realization to be coated in the upper surface of base material with applicator roll, and the second extrusion coated head
The downside of base material between applicator roll and the import of baking oven, is coated to the lower surface of base material, so as to realize to base material
Double spread, after double spread, enter back into drying box and dry.
Two kinds of above-mentioned double spread modes are applied to the base material that existing surface is in plane, still, for hole
Base material（Hereinafter referred to microporous substrate）During upper progress double spread, above-mentioned two ways is then less applicable, concrete reason
For：If using the first above-mentioned coating method, because the first coating method is facet successively coating, in this way
There are following defects, one, the adhesive of the coating on two sides is inconsistent, the coating shedding of the one side applied after easily causing, because first
The one side of painting after coating, is understood some coating and is distributed to through the micropore on base material on the substrate surface of another side, dried
After leave on a surface, and when being coated again on the surface, the coating applied afterwards then combined with the coating of residual it is bad, just
Can influence this face coating and base material directly in conjunction with therefore the coating applied after causing is the problem of easily come off；Two, it is such a to apply
Mode for cloth, uses coating head and coordinates what is be coated with applicator roll, so after first time is coated with, can be residual on applicator roll
Coating is stayed, is increased over time, the coating remained on applicator roll is more, timing is finally accomplished by and shuts down to coating roller surface
Cleaned, influence the continuous operations of coating apparatus, coating efficiency is lower；If using second above-mentioned of coating method,
I.e. double spread before it is dried, is dried when entering back into drying box.Although the adhesive on coating two sides is better than above-mentioned first method
, still, still there is the problem of adhesive is not quite identical in some；Simultaneously there is also can on applicator roll residual fraction coating,
The problem of needing fixed time cleaning applicator roll.
The content of the invention
In order to overcome above mentioned problem, the present invention to society provide a kind of Painting effect preferably, coating quality it is higher, together
When the higher two-sided extrusion coating method based on microporous substrate of coating efficiency.
The present invention also provide a kind of Painting effect preferably, coating quality it is higher, while coating efficiency it is higher based on
The two-sided extrusion apparatus for coating of microporous substrate.
The technical scheme is that：A kind of two-sided extrusion coating method based on microporous substrate is provided,
A kind of two-sided extrusion coating method based on microporous substrate,
（1）, one and the first of the microporous substrate predetermined distance the extruding painting are set in the side of the microporous substrate of sheet
Slurry is intermittently coated on the base material on the direction intersected with microporous substrate direct of travel by the leftover of bolt of cloth, the first extrusion coated head
On；
（2）, in the opposite side of the microporous substrate of sheet, one the second extrusion coated head for being contacted with the microporous substrate, institute are set
The lower lip for stating the second extrusion coated head is contacted in the way of linear contact lay or face contact with microporous substrate；The second extrusion coated head
Slurry is intermittently coated on the base material on the direction intersected with the direct of travel of microporous substrate；
（3）, first extrusion coated head set with second extrusion coated head across the microporous substrate, described first squeezes
Projection of the spraying nozzle of the spraying nozzle of the extrusion leftover of bolt of cloth and second extrusion coated head on the microporous substrate is non-overlapped；
（4）, with the tension force of microporous substrate vicinity corresponding to tension detector detects the spraying nozzle of the first extrusion coated head be
F1, then detect any in addition near the microporous substrate corresponding to the spraying nozzle of the first extrusion coated head of the microporous substrate
The tension force of any is F2, and the ratio that the spraying nozzle of second extrusion coated is arranged on the F1 and F2 of microporous substrate is 1:
0.8—1:0.4 F2 corresponding positions.
As improvement of the present invention, the traveling of the microporous substrate is completed by trailer system, the trailer system
Including the constant speed portion positioned at the tractive unit of baking oven afterbody and before extrusion coated head, the tractive unit is used for microporous substrate
Force, allows microporous substrate to travel rearwardly；The constant speed portion is used to keep microporous substrate gait of march to be in constant speed.
As improvement of the present invention, the microporous substrate is to use gas in the turning of traveling process or/and baking oven
Floating mode is to pop-up.
The present invention's also provides a kind of two-sided extrusion apparatus for coating based on microporous substrate, including：Unwinding device, winding dress
Put, for guiding the trailer system and be arranged on the unwinding device and wrap-up that microporous substrate advances in one direction
Between baking oven, the first extrusion coated head and the second extrusion coated head, first extrusion coated head is arranged on microporous substrate
Side, and with the microporous substrate noncontact, slurry is intermittently coated on and base material traveling side by first extrusion coated head
To on the microporous substrate on the direction of intersection；The second extrusion coated head is arranged on the opposite side of the microporous substrate；Wherein,
The lower lip of the second extrusion coated head is contacted in the way of linear contact lay or face contact with microporous substrate；Second extrusion coated
Slurry is intermittently coated on the microporous substrate on the direction intersected with microporous substrate direct of travel by head；First extruding is applied
The leftover of bolt of cloth and second extrusion coated head are set across the microporous substrate, the spraying nozzle of the first extrusion coated head with it is described
Projection of the spraying nozzle of second extrusion coated head on the microporous substrate is non-overlapped；The spraying nozzle of first extrusion coated head
The tension force of corresponding microporous substrate vicinity be F1, microporous substrate except the first extrusion coated head spraying nozzle corresponding to it is micro-
The tension force at any point outside near the base material of hole is F2, and the spraying nozzle of the second extrusion coated head is arranged on microporous substrate
F1 and F2 ratio is 1:0.8—1:0.4 F2 corresponding positions.
As improvement of the present invention, the trailer system is included positioned at the tractive unit of baking oven afterbody and positioned at extrusion coated
Constant speed portion before head, the tractive unit is used to give microporous substrate force, allows microporous substrate to travel rearwardly；The constant speed portion is used for
Microporous substrate gait of march is kept to be in substantially constant speed.
As improvement of the present invention, the baking oven includes shell, provided with the downward spray hot gas of number row in the shell
Upper nozzle sum row sprays hot gas lower nozzle upwards, and the microporous substrate is advanced between the upper nozzle and lower nozzle.
As improvement of the present invention, the microporous substrate is to use air supporting in the turning of traveling process or/baking oven
Mode to pop-up.
The present invention due to（1）, sheet microporous substrate side set one with the microporous substrate be separated by pre- spacing
From the first extrusion coated head, slurry is intermittently coated on by first extrusion coated head to intersect with microporous substrate direct of travel
Direction on base material on；（2）, sheet microporous substrate opposite side set one contacted with the microporous substrate second
Extrusion coated head, the lower lip of the second extrusion coated head is contacted in the way of linear contact lay or face contact with microporous substrate；It is described
Slurry is intermittently coated on the base material on the direction intersected with the direct of travel of microporous substrate by the second extrusion coated head；（3）、
The first extrusion coated head is set with second extrusion coated head across the microporous substrate, the first extrusion coated head
Projection of the spraying nozzle on the microporous substrate of spraying nozzle and second extrusion coated head be non-overlapped；（4）, with
Force detector detects that the tension force of the microporous substrate vicinity corresponding to the spraying nozzle of the first extrusion coated head is F1, then detects described
The tension force at any point in addition near the microporous substrate corresponding to the spraying nozzle of the first extrusion coated head of microporous substrate is
F2, the ratio that the spraying nozzle of second extrusion coated is arranged on the F1 and F2 of microporous substrate is 1:0.8—1:0.4 F2
Corresponding position.In the use of the present invention, the first extrusion coated head and the second extrusion coated head are simultaneously to the microporous substrate
Two sides is coated respectively, and in the present invention, the conjugation of the two sides of the microporous substrate and the coating on respective coating is all very
Good, coating is difficult for drop-off, and coating will not be remained in largely on applicator roll, also just without frequently shutting down procedure to clean applicator roll,
Coating efficiency is just higher；Moreover, in the present invention, the coating of the spraying nozzle and the second extrusion coated head of the first extrusion coated head
Mouth is provided at the predetermined warp tension ratio of microporous substrate, and advantage so is exactly the adhesive force of coating can be more preferable, coating
Effect also just more preferably, therefore, the present invention have Painting effect preferably, coating quality it is higher, while coating efficiency is higher
Advantage.
Brief description of the drawings
Fig. 1 is a kind of planar structure schematic diagram of embodiment of the double spread device in the present invention.
Embodiment
In the description of the invention, it is to be understood that " " center ", " on " in term, " under ", "front", "rear", " left side ",
The orientation or position relationship of instructions such as " right sides " are, based on orientation shown in the drawings or position relationship, to be for only for ease of and describe this hair
Bright and simplified description, rather than instruction or the signified device of hint or element must be with specific orientation, with specific orientation
Construction and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are only used for describing purpose,
And it is not intended that indicating or implying relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " company
Connect ", " connected " should be interpreted broadly, for example, it may be being fixedly connected with or dismantling connection, or be integrally connected；Can be with
It is mechanical connection or electrical connection；Can be joined directly together or be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
The concrete meaning of invention.In addition, in the description of the invention, unless otherwise indicated, " multiple ", " some " be meant that two or
Two or more.
The present invention provides a kind of two-sided extrusion coating method based on microporous substrate, is specially：One kind is based on microporous substrate
Two-sided extrusion coating method,（1）, sheet microporous substrate 9 side set one be separated by with the microporous substrate 9 it is predetermined
Slurry is intermittently coated on and the side of traveling of microporous substrate 9 by the first extrusion coated first 1 of distance, first extrusion coated first 1
To on the base material on the direction of intersection；
（2）, in the opposite side of the microporous substrate 9 of sheet, one the second extrusion coated head for being contacted with the microporous substrate 9 is set
2, the lower lip 21 of the second extrusion coated head is contacted in the way of linear contact lay or face contact with microporous substrate 9；Described second squeezes
Slurry is intermittently coated on the base material on the direction intersected with the direct of travel of microporous substrate 9 by the extrusion leftover of bolt of cloth 2；
（3）, first extrusion coated first 1 set with second extrusion coated first 2 across the microporous substrate 9, described
Projection of the spraying nozzle 100 of one extrusion coated head with the spraying nozzle 200 of second extrusion coated on the microporous substrate 9
It is non-overlapped；
（4）, with tension detector detect the first extrusion coated head spraying nozzle 100 corresponding to the vicinity of microporous substrate 9
Power is F1, then is detected near the microporous substrate 9 corresponding to the spraying nozzle 200 except the first extrusion coated head of the microporous substrate 9
Outside the tension force at any point be F2, F1 and F2 that second extrusion coated first 2 is arranged on microporous substrate 9 ratio is
1:0.8—1:0.4 F2 corresponding positions.
In the present invention, the traveling of the microporous substrate 9 is completed by trailer system, and the trailer system, which includes being located at, to be dried
The tractive unit 31 of the afterbody of case 4 and the constant speed portion 32 before extrusion coated head, the tractive unit 31 are used to apply to microporous substrate 9
Power, allows microporous substrate 9 to travel rearwardly；The constant speed portion 32 is used to keep the gait of march of microporous substrate 9 to be in constant speed.
In the present invention, the microporous substrate 9 be in the turning of traveling process or/and baking oven using pneumatically supported mode to
Pop-up.
The present invention also provides a kind of two-sided extrusion apparatus for coating based on microporous substrate, during shown in Fig. 1 is the present invention
A kind of embodiment of two-sided extrusion apparatus for coating based on microporous substrate, including：Unwinding device 5, wrap-up 6, for drawing
Lead trailer system and be arranged between the unwinding device 5 and wrap-up 6 that microporous substrate 9 advances in one direction
Baking oven 4, the first extrusion coated first 1 and the second extrusion coated first 2, first extrusion coated first 1 are arranged on the one of microporous substrate 9
Side, and with the noncontact of microporous substrate 9, slurry is intermittently coated on and base material traveling side by first extrusion coated first 1
To on the microporous substrate on the direction of intersection；Second extrusion coated first 2 is arranged on the opposite side of the microporous substrate 9；Its
In, the lower lip 21 of the second extrusion coated head is contacted in the way of linear contact lay or face contact with microporous substrate 9；Described second squeezes
Slurry is intermittently coated on the microporous substrate on the direction intersected with microporous substrate direct of travel by the extrusion leftover of bolt of cloth 2；Described
One extrusion coated first 1 is set with second extrusion coated first 2 across the microporous substrate 9, the first extrusion coated head
Projection of the spraying nozzle 200 of spraying nozzle 100 and second extrusion coated head on the microporous substrate 9 is non-overlapped；The
The tension force of the vicinity of microporous substrate 9 corresponding to the spraying nozzle 100 of one extrusion coated head is F1, the microporous substrate 9 except the
The tension force at any point outside the vicinity of microporous substrate 9 corresponding to the spraying nozzle 100 of one extrusion coated head is F2, described the
The ratio that the spraying nozzle 200 of two extrusion coateds head is arranged on the F1 and F2 of microporous substrate 9 is 1:0.8—1:0.4 F2 correspondences
Place；In the present invention, the spraying nozzle 200 of the extrusion coated of spraying nozzle 100 and second head of first extrusion coated head refers to the
The slurry outlet of one extrusion coated first 1 and the second extrusion coated first 2（Specifically refer to Fig. 1）, the present invention operationally, described the
One extrusion coated first 1 and the second extrusion coated first 2 are coated respectively to the two sides of the microporous substrate 9 simultaneously, the micropore
The conjugation of the two sides of base material 9 and the coating on respective coating is all fine, and coating is difficult for drop-off, and coating will not be remained in largely
On applicator roll, also just without frequently shutting down procedure to clean applicator roll, coating efficiency is just higher；In addition, in the present invention, by
Microporous substrate is provided in the spraying nozzle 200 of the extrusion coated of spraying nozzle 100 and second head of first extrusion coated head
At predetermined warp tension ratio, in the present invention, F1 and F2 ratio are 1:0.8—1:0.4, such advantage is, at this
In the range of warp tension ratio, the adhesive force that slurry is coated on when on base material can reach most preferably, and the effect of coating is also just more preferable, the present invention
Advantage be, when the particle volume of slurry is larger, be also unlikely to during coating because coating head setting and scrape
The surface of flower microporous substrate 9, still is able to be coated well, and in terms of existing technologies, slurry is on base material by the present invention
Adhesive force more preferably, with Painting effect preferably, coating quality it is higher, while the higher advantage of coating efficiency.
In the present invention, it is preferred that the trailer system is included positioned at the tractive unit 31 of the afterbody of baking oven 4 and positioned at extrusion coated
Constant speed portion 32 before head, the tractive unit 31 is used to give microporous substrate force, allows microporous substrate 9 to travel rearwardly；The constant speed
Portion 32 is used to keep the gait of march of microporous substrate 9 to be in substantially constant speed；The baking oven 4 includes shell 41, in the shell
The sum of upper nozzle 42 row for arranging spray hot gas downwards provided with number in 41 sprays hot gas lower nozzle 43 upwards, and the microporous substrate 9 is described
Advanced between upper nozzle 42 and lower nozzle 43, when the microporous substrate 9 after coating is entered in baking oven 4, just in upper nozzle 42 and lower spray
Dried in the presence of first 43, last rolling device 6 is wound.
In the present invention, the microporous substrate 9 be in the turning of traveling process or/baking oven 4 using pneumatically supported mode to
Pop-up；Such advantage is, prevents the coating paste on the surface of microporous substrate 9 after coating is not dry from just being scratched or dirty
Dye, the surface of microporous substrate 9 can be protected well.
Claims (7)
1. a kind of two-sided extrusion coating method based on microporous substrate, it is characterised in that：
（1）, in the microporous substrate of sheet（9）Side set one with the microporous substrate（9）The first of predetermined distance
Extrusion coated head（1）, the first extrusion coated head（1）Slurry is intermittently coated on and microporous substrate（9）Direct of travel is handed over
On base material on the direction of fork；
（2）, in the microporous substrate of sheet（9）Opposite side set one with the microporous substrate（9）Second extruding of contact is applied
The leftover of bolt of cloth（2）, the lower lip of the second extrusion coated head（21）By linear contact lay or face contact in the way of and microporous substrate（9）Contact；
The second extrusion coated head（2）Slurry is intermittently coated on and microporous substrate（9）Direct of travel intersect direction on
On base material；
（3）, the first extrusion coated head（1）With the second extrusion coated head（2）Across the microporous substrate（9）Set,
The spraying nozzle of the first extrusion coated head（100）With the spraying nozzle of second extrusion coated head（200）In the micropore base
Material（9）On projection be non-overlapped；
（4）, with tension detector detect the first extrusion coated head spraying nozzle（100）Corresponding microporous substrate（9）Vicinity
Tension force be F1, then detect the microporous substrate（9）Except the first extrusion coated head spraying nozzle（200）Corresponding micropore base
Material（9）The tension force at any point outside nearby is F2, the spraying nozzle of the second extrusion coated head（200）It is arranged on micropore base
Material（9）F1 and F2 ratio be 1:0.8—1:0.4 F2 corresponding positions.
2. the two-sided extrusion coating method based on microporous substrate according to claim 1 or 2, it is characterised in that：It is described
Microporous substrate（9）Traveling completed by trailer system, the trailer system include be located at baking oven（4）The tractive unit of afterbody
（31）With the constant speed portion before extrusion coated head（32）, the tractive unit（3）For to microporous substrate（9）Force, allows micro-
Hole base material（9）Travel rearwardly；The constant speed portion（32）For keeping microporous substrate（9）Gait of march is in constant speed.
3. the two-sided extrusion coating method based on microporous substrate according to claim 1 or 2, it is characterised in that：Institute
State microporous substrate（9）It is to use pneumatically supported mode to pop-up in the turning of traveling process or/and baking oven.
4. a kind of two-sided extrusion apparatus for coating based on microporous substrate, it is characterised in that including：Unwinding device（5）, wrap-up
（6）, for guiding microporous substrate（9）The trailer system advanced in one direction and it is arranged on the unwinding device（5）And receipts
Winding apparatus（6）Between baking oven（4）, the first extrusion coated head（1）With the second extrusion coated head（2）, first extrusion coated
Head（1）It is arranged on microporous substrate（9）Side, and with the microporous substrate（9）Noncontact, the first extrusion coated head（1）
Slurry is intermittently coated on the microporous substrate on the direction intersected with base material direct of travel；The second extrusion coated head
（2）It is arranged on the microporous substrate（9）Opposite side；Wherein, the lower lip of the second extrusion coated head（21）With linear contact lay or
The mode and microporous substrate of face contact（9）Contact；The second extrusion coated head（2）Slurry is intermittently coated on and micropore base
On the microporous substrate on direction that material direct of travel intersects；The first extrusion coated head（1）With the second extrusion coated head
（2）Across the microporous substrate（9）Set, the spraying nozzle of the first extrusion coated head（100）With second extrusion coated
The spraying nozzle of head（200）In the microporous substrate（9）On projection be non-overlapped；The spraying nozzle of first extrusion coated head
（100）Corresponding microporous substrate（9）The tension force of vicinity is F1, microporous substrate（9）Except the first extrusion coated head coating
Mouth（200）Corresponding microporous substrate（9）The tension force at any point outside nearby is F2, the painting of the second extrusion coated head
Cloth mouth（200）It is arranged on microporous substrate（9）F1 and F2 ratio be 1:0.8—1:0.4 F2 corresponding positions.
5. the two-sided extrusion apparatus for coating according to claim 4 based on microporous substrate, it is characterised in that：The traction
System includes being located at baking oven（4）The tractive unit of afterbody（31）With the constant speed portion before extrusion coated head（32）, the traction
Portion（31）For being exerted a force to microporous substrate, microporous substrate is allowed（9）Travel rearwardly；The constant speed portion（32）For keeping micropore base
Material（9）Gait of march is in substantially constant speed.
6. the two-sided extrusion apparatus for coating based on microporous substrate according to claim 4, it is characterised in that：It is described to dry
Case（4）Including shell（41）, in the shell（41）The interior upper nozzle for spraying hot gas downwards provided with number row（42）The upward spray of sum row
Hot gas lower nozzle（43）, the microporous substrate（9）In the upper nozzle（42）And lower nozzle（43）Between advance.
7. the two-sided extrusion apparatus for coating based on microporous substrate according to claim 4,5 or 6, it is characterised in that：
The microporous substrate（9）In the turning of traveling process or/baking oven（4）It is inside to use pneumatically supported mode to pop-up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710348334.1A CN106964526A (en) | 2017-05-17 | 2017-05-17 | Two-sided extrusion coating method and its double spread device based on microporous substrate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710348334.1A CN106964526A (en) | 2017-05-17 | 2017-05-17 | Two-sided extrusion coating method and its double spread device based on microporous substrate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108927309A (en) * | 2018-07-05 | 2018-12-04 | 常德金德新材料科技股份有限公司 | A kind of apparatus for coating of discontinuous high barrier coating material |
| CN109954628A (en) * | 2017-12-26 | 2019-07-02 | 株式会社小林制作所 | Double spread method and device |
| JP2019145420A (en) * | 2018-02-23 | 2019-08-29 | パナソニックＩｐマネジメント株式会社 | Manufacturing method of battery electrode plate, and coating device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1483181A (en) * | 1974-02-11 | 1977-08-17 | Inventing A | Coating method and apparatus therefor |
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| CN109954628A (en) * | 2017-12-26 | 2019-07-02 | 株式会社小林制作所 | Double spread method and device |
| JP2019145420A (en) * | 2018-02-23 | 2019-08-29 | パナソニックＩｐマネジメント株式会社 | Manufacturing method of battery electrode plate, and coating device |
| CN108927309A (en) * | 2018-07-05 | 2018-12-04 | 常德金德新材料科技股份有限公司 | A kind of apparatus for coating of discontinuous high barrier coating material |
| CN108927309B (en) * | 2018-07-05 | 2020-09-11 | 常德金德新材料科技股份有限公司 | Coating device for intermittent high-barrier coating material |
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