Film Width Measurement on R2R Process
In the field of electronic devices, Roll-to-Roll (R2R) processing is a method of producing flexible and large-area electronic devices on a roll of plastic film or metal foil.
R2R is a family of manufacturing techniques involving continuous processing of a flexible substrate that is transferred between two moving rolls of material in which additive processes can be used to build film structures in a continuous manner.
R2R is an important class of substrate-based manufacturing processes applied nowadays for EV market lithium-ion battery (LIB) such as:
- Metal foil (aluminium and copper) manufacturing
- Plastic film for separator production
- Printed/Flexible thin-film batteries electrodes (cathode and anode)
The current needs to apply R2R processes in flexible thin-film battery manufacturing are focused on the following process operation:
Rolling process (LIB electrode manufacturing)
- R2R Coating and Drying
- R2R Calendering or Compressing
- R2R Slitting or Cutting
In all these operations is important to reduce excessive scrap rates of electrode manufacturing by means an In-line quality measurement and control as example non-contact technology sensors for width checking.
The width checking must be performed strictly within the production line, therefore be carried out with non-contact technologies. In order to perform in-line measurement of the width on delicate material that can’t be touched and measured with traditional contact solution, MARPOSS/AEROEL proposed its own non-contact technologies that is Laser Scanner Micrometers.
