Polished Belt Information Sandvik Process Systems May 2011

Sandvik Process Systems Sandvik Polished Belt Different surface grade for different application needs Inclusion level, surface roughness, thickness tolerance etc Main Usage Used in film casting machine for high-tech plastic films Best for thin, constant, high optical performance film Major end-user applications: FPC, LCD display, packaging etc Major materials are PI, TAC, PC, PP and PVA etc Casting techniques are more used to produce thin films to meet market’s high spec demands

Sandvik Process Systems Where is Polished Belt used? Film TypeEnduser MarketChemical Ceramic sheetFuel Cell, CapacitorCeramic MembraneMedicalHigh-tech Membrane Packaging FilmConsumerPP, PVC LCD thin filmsLCD displayTAC, PVA(PVOH), PC Flexible printed circuit board films Digital camera, mobile phone, laptop PC etc PI High-tech thin film lamination (press) Electronics, Automotive, Aerospace etc Various sheet materials

Sandvik Process Systems Examples - LCD and FPC Antireflection Film (PET) Polarization Film (PVA with TAC) Retardation Film(PC, COP, TAC) Substrate (PES, PET, PC, PAR) Color Filter (PET) Substrate (PES, PET, PC, PAR) Polarization Film (PVA with TAC) Diffusing Film Prism Sheet Flexible Printed Circuit (PI)

Sandvik Process Systems Sandvik Polished Belt 1.Various Surface Grade Available From buff to super mirror polish Various size available 2.On-site Installation Service Need to polish after welding Can save installation time and cost for big belt 3.Flexible Service Support Quick on-site surface repair available by Sandvik local service Re-polishing service available at Sandvik factory

Sandvik Process Systems Feature 1: Different Surface Many surfaces available to meet wide application requirements Surface sample available from factory Unique surface patterns (satin etc) can be also consulted. GradeRaPin HolesThickness Variation Remarks Fine ground<= 0.2 umNot specified<= 80um Buffing<= 0.1 umNot specified<= 80um PF-0<= 0.02 umsize > 500um : None<= 50um PF-1<= 0.02 um100um <= size <= 500um with 20 pc/m2 <= 50umESR material required PF-2<= 0.01 um50um <= size <= 100 um with 5 pc/m2 <= 50umESR material required PF-3<= 0.01 um40um <= size <= 70 um with 5 pc/m2 <= 40umESR material required

Sandvik Process Systems Feature 2: Installation Service Belt to be delivered with endless or open length For endless Cross-welded line is polished with seamless condition in factory For open length SPS provides on-site installation service Cross-welding and polishing of welding line Field polishing equipment available (in Japan)

Sandvik Process Systems Feature 3: Repair Service Complete “re-polishing” service available At Japan factory Good for less damaged belt On-site “spot repair” service available At customer’s site Good for one spot repair

Sandvik Process Systems Polished Belt – Production Process Steel Belt from Sweden AOD Material (Argon-Oxygen-Decarburization) and ESR Material (Electroslag-Remelting) Use ESR belt (less inclusion) for high grade polished belt. Mechanical property is same. Polish in Japan factory 5 grades, PF-0 to PF-4 Inspection Inspection by Sandvik Inspection by Customer Delivery and Installation to Customers Factory or Field Welding 2 ） Polishing 1 ） Belt Material 3 ） Inspection 4 ） Delivery and Installation

Sandvik Process Systems Application example – thin film casting production line Steel belt casting unit Die Dryer oven Belt conveyer with polished belt Casting Unit Vertical Dryer Tenter (Vertical) Tenter (Horizontal) Cooling Zone Winder Control Unit Polymerization Unit Air Handling System

Sandvik Process Systems Sales Catalogs Sandvik Polished Belt Catalog (S-PS024-B-ENG) Sandvik Steel Belt Selection Guide (PS-SB-101 ENG) Sandvik Steel Belts Specifications (PS-SB-5507 ENG) Taylor-made Customer Specification (for each customer) Steel Belt Catalog (1000SA, 1200SA etc) New!

Sandvik Process Systems Customer Specification

Sandvik Process Systems Information Required Application Film Type (PI, TAC, PC, Membrane, Ceramic etc) Typical Film Thickness (xx um) Enduser Application (FPC, LCD, Membrane, Fuel Cell etc) Production Machine (Maker, single belt casting? or double belt system? etc) Steel Belt Belt Grade (Sandvik 1000SA or 1200SA or others?) Dimension (Length, Width, Thickness) Open Length or Endless Required Surface Roughness (Ra value) Required Surface Defect Level (Buff, PF-xx etc) Necessity for Field Installation Others Required Delivery Schedule Inspection Before Shipment at Sandvik Factory Term of Shipment