Slot Die Coating Equipment

Cathode substrate

Anode substrate

Name

copper foil

aluminum foil

thickness

(8-30) μm

(10-30) μm

Width of  substrate

(200-320) mm

(200-320) mm

2、Coating parameters

Material

cathode  film

Anode film

Graphite, mesophase carbon, hard carbon, etc

Dry coating thickness

(50-150) μm (excluding single dry foil)

(50-150) μm (excluding single dry foil)

Wet coating thickness:

100μm～300μm

100μm～300μm

solid content

(40-70) ±5%

(30-80) ±5%

specific gravity

(1.0-1.4) g/cm3

(1.0-2.5) g/cm3

viscosity

(2500-8000) CPS

(1000-10000) CPS

temperature

Control by process  RT～140℃，adopt electric heating method

solvent

NMP Oil system/drainage system

NMP Oil system/drainage system

3.  Basic machine parameters

Width of coating roller

400mm

Effective coating width

300mm and below

Coating method

Continuous  extrusion  coating  (including strip coating) / intermittent  extrusion  coating

Coating speed

1～5m/min （Related to oven temperature, film state and coating process Settings）；

Power supply

380 V x 50 Hz, three phase（ontrol power supply 220 V x 50 Hz, single phase）

Total power

Max. 50KW

air source

0.6 MPa

Total machine length: not more than 10 meters

1

Roller mounting structure

Rack mounting method

2

Roller surface treatment

Metal aluminum roller surface oxidation

3

Tension control system

The closed loop automatically controls the constant tension, and the tension range is 0~50N

4

Rectify way

Automatic EPC control, stroke 80mm

5

Winding way

The roll is fixed by the 3-inch inflatable shaft;

6

Direction of substrate operation

Positive and reverse

7

Substrate running speed

5m/min

8

Maximum rewinding diameter

Ф300mm

9

Maximum load bearing capacity of expansion shaft

100Kg

10

The number of inflating shaft strips in winding

1

11

Main drive motor

Servo motor + precision planetary reducer

12

toolsetting

Servo + keenes grating ruler

13

Roller surface treatment

Surface oxidation of metal aluminum roller, circular jump ≤30um

14

Coating type

Continuous extrusion coating/gap extrusion coating

15

Die parameters

Die width: at 20 ℃, die length is 400mm ± 0.5mm;

Body material: 15-5PH stainless steel;

Channel surface polishing accuracy: 4-6ra (micro inch);

Feeding position: back feeding;

Products and applications: 3-300 μ m positive / negative paste, lithium-ion battery application

16

Coating roll (steel roll)

Special steel pipe, diameter Φ 120mm, hard chrome plating

Circular run out accuracy within 2um

Linear speed range 2-5M / min

There is no abnormal noise, vibration and heat in each part during driving rotation

17

Roller specification

Diameter Ø80mm, surface imported EPDM rubber

18

Slot die head movement

Base drive: push button operation (use a cylinder to move a wide range)

Clearance adjustment: button operation (actuated by servo motor)

Gap detection: grating ruler (accuracy 1um)

19

Single head position

Installation and operation before drying

1

Screw pump

Japanese Soldier Screw Pump

2

Transit pot

Volume 30 L,  pressure control, liquid level detection, slow stirring

3

Material backflow coating controller

Material backflow coating controller

4

Filter

customized according to customer requirements

5

De-ironing separator

Above 8000 gauss

6

Pressure balance buffer

Make sure the pressure in the pipeline is balanced

7

Pipelines and accessories

Stainless steel quick joints and stainless steel pipe fittings

8

Pressure monitoring system

Each part of the pipeline is monitored by a pressure monitoring system

1

Oven structure

Double heating, up and down

2

Oven length

6m (2 m/section*3)

3

Texture

SUS304 stainless steel, inner liner 1.0mm, outer liner 1.2mm

4

Oven guide roller drive mode

Passive idler drive

5

temperature control

Divided into normal working temperature control, over temperature monitoring and alarm protection control, cut off heating power when over temperature; each section is completely independent control

6

Heating Mode

Electric heating, hot air circulation structure

7

Single section oven heating power

12KW/2m

8

Internal temperature of drying channel

Designed Max150℃, temperature difference in single section oven ≤5℃

9

Box surface temperature during operation

≤45℃

10

Blowing way

The upper and lower air blowers, the up and down air volume are controlled by valves respectively; the upper and lower air chambers share the heating body

11

Exhaust volume control for each section

Circulating fan air volume 3000m³ / h (single section)

Exhaust air volume 4000m³ / h

12

Structure of the wind

The blowing direction is 30 degrees from the horizontal. The air nozzle slot is slotted with a special mold.

13

Heating control

solid-state relay

14

Fan material

SUS304  stainless steel

15

Solvent recovery system

NO  just help install the interface

16

NMP solvent concentration alarm

NO

17

Wind chamber pressure monitoring

NO

1

tension

One set is installed in front of the traction roller, and the constant tension is automatically controlled. The tension range is 0 ~ 50N.

2

Installation structure

Square frame welding base frame, one side vertical plate

3

Number of inflating axis in winding

1(one-armed winding)

4

Winding roll diameter

Ф300mm

5

Winding rectification

Automatic EPC control, stroke 80mm

1

Master control system

ouch screen, PLC, module, servo system

2

mode of operation

Manual, automatic, emergency stop;

3

Coating, intermittent length set range

Coated length 20.0～3200.0mm

Intermittent length 5.0～3200.0mm

4

Alarm condition

In case of equipment failure, the touch screen will display the corresponding correction screen

5

Count function

Production quantity/length