Roll To Roll Reverse Comma Coater Transfer Coating System With Drying Oven

DESCRIPTON: Intermittent experimental coating machine is a three-roller transfer coating equipment. It can carry out continuous and intermittent coating, which is convenient to be applied to the equipment for surface coating process of various substrates. Especially used in the lithium ion battery industry. The equipment is designed to be convenient for researchers to use while meeting the requirements of coating accuracy and consistency, which is no different from production. The drying effect is excellent, and it is an ideal choice for the research and development and small tests of lithium ion batteries, super capacitors, nickel batteries and other secondary batteries.

 

Characteristic

*Substrate tension control, stable belt, configuration of correcting device;

*Hot air oven, double-sided airing on the top and bottom, good drying effect;

*Three-roll transfer coating with a wide coating window;

*Comma scraper metering, with precision adjustment mechanism, to achieve high coating accuracy;

*PLC control, touch screen operation, easy to use;

*Optional solvent recovery treatment device;

 

Equipment technical parameters and main equipment configuration

1)Main equipment configuration

NO.	Item	Technical parameters
1.	Suitable for system	Ternary, lithium iron phosphate, lithium cobaltate, lithium manganate, graphite, silicon carbon and other system battery positive and negative electrode coating process
2.	Coating type	Continuous coating
3.	Oven section number	1 section 1 meter oven
4.	Coating speed	0~0.5m/min
5.	The substrate thickness	Aluminum foil (Al) : 8 ~ 30um copper foil (Cu) : 8 ~30um
6.	Design width of roll surface	300 mm
7.	Ensure coating width	within 260mm
8.	Coating roller, cots	Φ120mm
9.	Presser roll	Φ80mm
10.	Precision coating	±3um
11.	Weight  precision(mg/cm2)	Coating center value±1.0%
12.	Suitable for paste viscosity	2000~12000 (mPas)
13.	One side dry coating thickness range	20-150μm
14.	The solvent properties	Oily solvent NMP (s.g=1.033,b.p=204℃)
		Aqueous solvent H2O/NMP(s.g=1.000,b.p=100℃)
15.	Suitable for solid content range	20~85%
16.	Coating size accuracy(mm)	L≤±1 、W≤±0.5
17.	Precision of front and back alignment (mm)	L≤±1 、W≤±0.5

 

2) Integral unwinding, head mechanism:

NO.	Iten	Technical parameters
1.	Roller mounting structure	Install the steel frame firmly
2.	Roll surface treatment	Metal aluminum roll surface oxidation
3.	Tension control system	Automatic control constant tension, tension range 0~50N, servo motor control
4.	Rectify way	Automatic EPC control, stroke 50mm
5.	Winding mode	The material coil is fixed with 3-inch air expansion shaft and air expansion shaft;
		Single air expansion axis for unwinding
6.	Maximum unwinding diameter	Ф250mm
7.	Maximum load bearing of gas expansion axis	30Kg
8.	The number of air-expanding shafts	1
9	Main drive motor	Servo motor
10	Roll surface treatment	Metal aluminum roll surface oxidation
11	Doctor blade	Double-sided comma doctor blade
12	Coating roller (steel roller)	Hard chrome plating
13	Back roll (cots)	The surface is covered with imported epdm
14	Adjust blade clearance height	Manual setting
15	Single head position	Installation and operation before drying path

 

3)Oven

NO.	Item	Technical parameters
1.	Oven structure	Double layer independent heating, upper and lower arrangement
2.	Oven length	1m/section
3.	Material	SUS304 stainless steel
4.	Temperature control	Divided into normal working temperature control, overtemperature monitoring and alarm protection control, and cut off the main heating power supply; The paragraphs are completely independent of each other
5.	Heating Mode	Electric heating, hot air circulation structure
6.	Single section oven heating power	5KW
7.	Inside temperature of Oven	Design Max. 150℃, single section oven temperature difference ≤±2.5℃
8.	Blowing way	Upper and lower air blowing, upper and lower air chamber share heating body
9.	Structure of the wind	Special mold is used to cut the air nozzle groove
10.	Fan control	Contactor control
11.	Heating control	Solid-state relay
12.	The fan material	SUS304 stainless steel
13.	Solvent recovery system	Optional

 

4)Winding mechanism: it has the same function as unwinding, as follows

NO.	Item	Technical parameters
1.	Rectifying marching	Installation of drying outlet
2.	Tension	Automatic control of constant tension
3.	Installation structure	Install the steel frame firmly
4.	The number of winding gas expansion axis	1 One-armed winding

5)Control system

NO.	Item	Technical parameters
1	Master control system	Touch screen, PLC, servo system
2	Mode of operation	Manual, automatic, emergency stop; The whole machine can be operated before and after
3	Alarm condition	When the device fails, the touch screen will display the corresponding correction screen

 

6)Hardware accuracy

NO.	Item	Technical parameters
1.	Scraper	Circular jump ≤±1.5um, Ra0.4, straightness ≤±1.5um
2.	Coating roller(steel roller)	Circular runout ≤±1.5um, Ra0.4 straightness ≤±1.5um
3.	Rubber roll	Circle runout ≤10um, straightness ≤10um
4.	Rectifying deviation	±0.2mm

 

7)Installation environment requirements

1)The ambient temperature of the machine head is 25~30°C, and the rest is 10~40°C;

2)The relative humidity of the machine head is RH ≤ 35%, the negative electrode RH ≤ 98%, and the rest ≤ 98%;

 

8)Supporting facilities

1)Power supply: 3PH 380V, 50HZ, voltage fluctuation range: +8%~–8%; power supply total power 10KW;

2)compressed air: after drying, filtering and voltage regulation: the outlet pressure is greater than 5.0kg/cm2