Photovoltaic Film
Photovoltaic Film
Photovoltaic Film
Industry background and current situation

In the film production process, the precise ratio feeding of various raw materials is the key part. Solar cell EVA packaging film is based on EVA, supplemented with several modifiers generally including EVA resin cross-linking agent, UV absorber, antioxidant (or anti- heat aging agent), UV stabilizer, plasticizer, tackifier etc.


Sonner provides a standard COMPACT loss-in-weight feeding and mixing workstation for the dosing of film raw materials with functional master batches, which is an ideal and mature solution for extrusion cast film processing and can well adapt to differentiation. The transition of materials is tracked to the data records of materials in real time.

Dosing solution

1

The additive is optimized into independent small batch premixing and then into the additive loss-in-weight feeder,
which improves the feeding accuracy of the additive in the recipe.
Ingredients
Typical raw material composition
Resin: granules, bulk density 0.5-0.7Kg/L; general fluidity
Resin: granules, bulk density 0.5-0.7Kg/L; general fluidity
Auxiliary: granules, bulk density 0.5-0.7Kg/L; good fluidity
Accuracy reaches ±0.5%
24 hours continuous feeding operation
Adapt to the requirements of diversification of main materials
Compact design, small footprint
Technics
Characteristics
Photovoltaic Film
Photovoltaic Film
Common equipment composition

FC small central conveying system

Refilling storage hopper

Feeding valve

Compact-M Loss-in-weight mixing station

CCO yield tracker

Collection silo

Cast film extruder

Common equipment
Make up

Advantages of Sonner feeder

Multi-program
Multi-program
We support continuous/batch weighing, compatible with granular, powder, and liquid raw materials. Design a plan based on the customer's on-site situation.
01
More accuracy
More accuracy
The dynamic weighing module is equipped with a 24 bit 1:400000 resolution chip and a 32-bit CPU. Even with small feeding amounts, we can ensure stable feeding accuracy.
02
Dual closed-loop
Dual closed-loop
Flow and speed dual closed loop, flow (g/s) control adjustment frequency 500ms, solving the problem of accuracy in speed execution.
03
Anti-bridge
Anti-bridge
Excellent anti bridging performance, facing difficult to feed mineral powder, our flow control is more precise.
04
Easy control
Easy control
The entire system adopts a modular design, which is easy and quick to disassemble without tools, making it easy to clean and replace raw materials.
05