JP2001191014A - Vacuum impregnating method of sheet like material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum impregnating method of a sheet like material, which is capable of precisely winding the sheet like material as a product sheet like material by preventing the meandering or the generation of wrinkle in the continuous impregnation of the sheet like material. SOLUTION: When the sheet like material supported in a vacuum vessel is vacuum deaerated, impregnated by passing through an impregnating liquid with a pair of seal roller, introduced to the outside and wound, the meandering of the sheet like material is prevented to control the position by a meandering correcting roller device provided in the front and the rear side of the seal rollers.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for applying or impregnating an electrolytic solution or the like to a film or sheet capacitor or lithium ion battery, or to forming a liquid, gel, or the like on a porous or permeable sheet. The present invention relates to a method for vacuum impregnation of a sheet material used for impregnating a colloidal material.

[0002]

2. Description of the Related Art Conventionally, when a sheet is impregnated with a liquid, the sheet is retained in a vacuum atmosphere to remove air, moisture, a solvent, etc. in pores of the sheet, and then impregnated. The liquid is sent into the liquid to be made to permeate and impregnate the pores of the sheet-like material with the liquid. In this case, when performing the continuous processing, it is necessary to partition the vacuum atmosphere from the atmospheric pressure state where the liquid is present. Airtight or liquid sealing is performed by using a roller nip.

The roller rotates while nipping and feeds a sheet. Guide rollers for guiding the feeding of the sheet are provided before and after the seal roller.

[0004] The sheet-like material generally meanders when passing through a seal roller that is a parallel roller.

In particular, in a vacuum impregnating apparatus that performs continuous feeding, the sheet-like material does not go straight when it is fed by a seal roller and guide rollers before and after it, or the sheet-like material after the liquid has passed through the sheet-like material. Because the liquid adheres to the surface of the object, the viscosity of the liquid causes the liquid to enter between the roller surface and the sheet-like material, causing a phenomenon in which the sheet-like material floats, causing the sheet-like material to meander or move. There is a problem that wrinkles and the like are generated. Therefore, a problem occurs when the sheet is wound as a product sheet. Therefore, it is necessary to correct the meandering and control the wrinkles.

[0006]

The object of the present invention is to prevent the occurrence of meandering, wrinkles and the like during continuous impregnation of a sheet-like material as described above, and to properly roll the sheet-like material into a roll-like product sheet-like material. Provided is a method for vacuum impregnation of a sheet-like material to be removable.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a method for forming a sheet-like material by vacuum impregnation in a vacuum chamber, and then impregnating the sheet-like material through a pair of seal rollers while passing it through an impregnating liquid, leading the sheet to the outside, and winding the sheet. In addition, before or after the seal roller, or by the meandering correction roller provided before and after, to prevent the sheet-like material from meandering,
It is a method of vacuum impregnation of a sheet-like material whose position is controlled, and the sheet-like material is introduced into the vacuum chamber from the atmosphere through a pair of inlet seal rollers provided at the inlet of the vacuum chamber, and the vacuum is released. After passing through the impregnating liquid through a pair of outlet seal rollers, the sheet is impregnated, guided to the outside, and wound up, by means of a meandering correction roller provided before the inlet seal roller and after the outlet seal roller. It comprises a method of vacuum impregnation of a sheet-like object in which meandering of the object is prevented and the position is controlled.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a sheet impregnating apparatus according to an embodiment of the present invention; FIG. 1 shows an embodiment in which a sheet material having a finite length is impregnated, and a sheet material 2 wound in a roll shape attached to a shaft 1 which is easy to attach and detach a work is attached to a substrate 3. Is mounted via a shaft 1 in a vacuum chamber 4.

In this case, although not shown, a door for loading and unloading the work is attached to the vacuum chamber 4, and a pair of seal rollers 5, 5 and seals 6, 6 Are integrally attached to a roller case 7, and the roller case 7 is attached to an impregnation liquid tank 8 filled with an impregnation liquid 9.

Note that, of course, the roller case 7
In order to prevent air leakage at both end surfaces of each seal roller 5,
An end face seal (not shown) is provided.

A take-up shaft 11 driven by a torque motor (not shown) attached to a take-up reel 10 attached to the end of the impregnating liquid tank 8 is attached.

The take-up reel 10 is movable in the axial direction of the take-up shaft 11 and is provided with an actuator therefor. The roll-shaped sheet 13 wound on the take-up shaft 11 is By detecting the edge with an appropriate sensor and controlling the movement of the take-up reel 10 in the axial direction according to the detected value, a roll-shaped sheet material 13 having the aligned edges can be obtained.

Here, the end of the sheet-like material 2 attached to the shaft 1 in the vacuum chamber 4 is manually set via the meandering correction rollers 14 and 15 on the winding shaft 11, and the vacuum is prepared for winding. Close the door (not shown) of the tank 4 and set the vacuum pump 12
Is started, and the inside of the vacuum chamber 4 is evacuated.

Next, when each of the sealing rollers 5 and 5 and a torque motor (not shown) are driven to rotate the winding shaft 11 together, the sheet-shaped material 2 wound in a roll shape is sequentially placed in the vacuum chamber 4. The sheet-like material 2 having particularly small pores is sufficiently deaerated and dehumidified while being supported by the impregnating liquid 9 without being exposed to the atmosphere through the seal rollers 5 and 5. Go inside.

In this case, since the impregnating liquid 9 receives the atmospheric pressure, the sheet-like material 2 is impregnated at a pressure of 1 atm. The resulting torque motor is in a constrained operation, and is wound while supporting the sheet-like material 2 while applying a constant tension to the sheet-like material 2 and is simultaneously guided to the outside.

Accordingly, depending on the tensile strength of the sheet 2 to be impregnated, it is naturally necessary to adjust the tension of the torque motor.

Here, the meandering correction roller 14 is formed in a cage shape as shown in FIGS. 4, 5, 6 and 7, and the meandering correction roller 15 is provided on the surface of the cage-shaped roller, for example, as shown in FIGS. The one with the groove 24 is used.

A pivot roller 20 as shown in FIG. 2 is interposed between the meandering correction roller 14 and the winding shaft 11, and the pivot roller 20 has one end of its both ends supported in the X direction and in the X direction. By moving in the Y direction, the position of the sheet 2 to be wound can be controlled.

Here, a sheet-like material 2 such as a thin film
When passing through the contact surface of the pair of seal rollers 5, 5,
An extremely small gap formed between the end of the sheet 2 and the contact surface between the seal rollers 5 and 5, or between each seal roller 5, 5 and the surface of the end face seal, or between the seal rollers 5 and 5. During operation, the impregnating liquid 9 may leak into the vacuum tank 4 although slightly, during operation, for example, between the seals 6 and 6 in the axial direction and the end faces.

Since the leaked amount is small, it does not affect the inside of the vacuum chamber 4, but the sensor 1 shown in FIG.
6 senses this, operates the extraction pump 17, and causes a pair of seal rollers 5, 5 facing the inside of the vacuum chamber 4.
What is necessary is just to return the impregnating liquid 9 accumulated in the section to the impregnation tank 8.

In the above method, the sheet-like material 2
Is unwound in a vacuum, brought to a central position on a meandering correction roller 14, nipped and fed on seal rollers 5, 5 and introduced into the impregnating liquid 9 under atmospheric pressure, where The sheet 2 is impregnated into the inside of the sheet 2, and the liquid adheres to the surface of the sheet 2, and is sent to the pivot roller 20 through the meandering correction roller 15.

The meandering correction roller 15 uses the sheet 2
Although the impregnating liquid adheres to the sheet, the liquid is removed by using a cage-shaped roller as shown in FIGS. 4, 5, 6 and 7, and the roller surface of the meandering correction roller 15 and the sheet are removed. Since the sheet 2 is in direct contact with the sheet 2, the sheet 2 is prevented from floating, and as shown in FIGS. 4, 5 and 7, the sheet 2 is
Meandering can be prevented, and the position can be controlled appropriately.

The meandering correction roller 15 shown in FIG. 4 is a grooved roller having an axial groove 24 provided on the roller surface, and FIG. 5 is a meandering correction roller 15 having a spiral groove 24 provided on the roller surface. FIG. 6 shows a hollow cage-shaped meandering correction roller 15 formed of a basket such as a net, and FIG. 7 further provides a through-hole 25 communicating from a groove 24 provided on the surface of the basket-shaped roller to the center, thereby impregnating the cage. The liquid is easily removed from the center.

Further, the meandering correction roller 15 includes a grooved roller having a groove 24 on its circumference as shown in FIG.
Tyco-shaped rollers and the like can also be used effectively.

Next, as the pivot roller 20, a roller having the same shape and structure as the rollers shown in FIGS. 4 to 9 can be used, but the pivot roller 20 prevents the sheet 2 from meandering. At the same time, the position of the sheet 2 can be controlled by detecting the edge of the roll-shaped sheet 13 wound in a roll and moving the take-up reel 10 in the axial direction.

That is, by appropriately arranging the roller devices including the meandering correction rollers 14 and 15 and the pivot roller 20 before and after the seal roller 5 as described above, meandering of the sheet-like material is prevented and the position is controlled. can do.

Next, FIG. 3 shows a vacuum impregnating apparatus according to another embodiment, and the same parts as those in FIG. 1 are denoted by the same reference numerals, but in FIG. The sheet 2 is introduced into the vacuum chamber 4 through a pair of seal rollers 18 provided at one end of the vacuum chamber 4 from outside, and the sheet-like material 2 is vacuum degassed by the vacuum pump 12 in the vacuum chamber 4. And
Thereafter, it is impregnated in the same manner as in FIG. 1 and is led out and wound up.

That is, the rolled sheet material 2 in the atmosphere passes through the meandering correction rollers 21 and 22 in the outside air, and is introduced from the guide roller 14 into the vacuum chamber 4 via the pair of seal rollers 18 and 18. After being supported by the meandering correction roller 15, it passes through the pivot roller 20 and is wound up.

That is, in the apparatus of the embodiment shown in FIG.
By the operation of the roller device including the meandering correction rollers 14, 15 and the pivot roller 20, etc., the meandering of the sheet-like material 2 fed in the device is prevented, the position is controlled, and the edges are aligned with the take-up reel 10. And rolled up.

[0030]

According to the method for vacuum impregnation of a sheet-like material according to the present invention described above, perfect continuous impregnation is possible. The work can be set more easily than the conventional continuous impregnation apparatus, and the deaeration / impregnation effect is not different from that of the conventional continuous impregnation method. No more hassle.

Furthermore, since the sheet-like material is prevented from meandering or wrinkling during continuous impregnation, and the position of the sheet-like material is reliably controlled, the product sheet wound into a roll shape The edges of the objects are aligned, and the product quality can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic layout view of an embodiment of a vacuum impregnation apparatus for a sheet-like material according to the present invention.

FIG. 2 is an enlarged perspective view of a main part around a pivot roller of the apparatus of FIG. 1;

FIG. 3 is a schematic layout view of another embodiment of the vacuum impregnation apparatus of the present invention.

FIG. 4 is a front view of an axial grooved roller applicable to the meandering correction roller and the pivot roller in FIGS. 1 and 2;

FIG. 5 is a front view of a spiral grooved roller applicable in the same manner as FIG. 4;

FIG. 6 is a front view of a hollow cage roller applicable similarly to FIG. 4;

FIG. 7 is a front sectional view of a roller having a groove and a through-hole applicable in the same manner as in FIG. 4;

FIG. 8 is a front view of a roller with a circumferential groove applicable as in FIG.

FIG. 9 is a front view of a Tyco roller applicable in a manner similar to FIG. 4;

[Explanation of symbols]

 2 Sheet-shaped material 4 Vacuum tank 5 Seal roller 9 Impregnation liquid 14, 15 Meandering correction roller

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4D075 AB03 AB12 AB32 AB36 AB55 BB56Y DA04 DB31 DC19 4F040 AA22 AC02 BA50 CC15 CC19 CC20 DA02 DA14 5E082 BC28 FF18 FG06 FH18 MM21 MM23

Claims (2)

[Claims] 1. After degassing a sheet-like material in a vacuum chamber, impregnating the sheet-like material while passing it through an impregnating liquid through a pair of seal rollers, leading it to the outside, and winding it up before or after the seal roller. Or a meandering correction roller provided before and after to prevent meandering of the sheet-like material and control the position of the sheet-like material under vacuum. 2. A sheet-like material is introduced from the atmosphere into the vacuum chamber through a pair of inlet seal rollers provided at the inlet of the vacuum chamber, and after being evacuated to vacuum, impregnated through a pair of outlet seal rollers. When impregnating while passing through the liquid, leading to the outside, and winding, the meandering correction roller provided before the inlet seal roller and after the outlet seal roller prevents the sheet from meandering and controls the position. Vacuum impregnation method of a sheet-like material.