Polished Belt Information

Sandvik Process Systems

May 2011

Sandvik Process Systems

Sandvik Polished Belt

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 Type Enduser Market Chemical

Ceramic sheet Fuel Cell, Capacitor Ceramic

Membrane Medical High-tech Membrane

Packaging Film Consumer PP, PVC

LCD thin films LCD display TAC, 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 FilmPrism 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.

Grade Ra Pin Holes Thickness

Variation

Remarks

Fine ground <= 0.2 um Not specified <= 80um

Buffing <= 0.1 um Not specified <= 80um

PF-0 <= 0.02 um size > 500um : None <= 50um

PF-1 <= 0.02 um 100um <= size <= 500um

with 20 pc/m2

<= 50um ESR material

required

PF-2 <= 0.01 um 50um <= size <= 100 um

with 5 pc/m2

<= 50um ESR material

required

PF-3 <= 0.01 um 40um <= size <= 70 um

with 5 pc/m2

<= 40um ESR 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

DieDryer oven

Belt conveyerwith polished belt

CastingUnit

Vertical Dryer

Tenter(Vertical)

Tenter(Horizontal)

CoolingZone

Winder

ControlUnit

PolymerizationUnit

Air HandlingSystem

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