Polished Belt Information
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Transcript Polished Belt Information
Polished Belt Information
Sandvik Process Systems
May 2011
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
Polarization Film
Retardation Film
Substrate
Color Filter
Substrate
Polarization Film
Diffusing Film
Prism Sheet
Flexible Printed
Circuit (PI)
Sandvik Process Systems
(PET)
(PVA with TAC)
(PC, COP, TAC)
(PES, PET, PC, PAR)
(PET)
(PES, PET, PC, PAR)
(PVA with TAC)
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
Remarks
Variation
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
<= 50um
with 20 pc/m2
PF-2
<= 0.01 um
50um <= size <= 100 um
required
<= 50um
with 5 pc/m2
PF-3
<= 0.01 um
40um <= size <= 70 um
with 5 pc/m2
Sandvik Process Systems
ESR material
ESR material
required
<= 40um
ESR material
required
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
1)Belt Material
Inspection
Inspection by Sandvik
Inspection by Customer
3)Inspection
Delivery and Installation to Customers
Factory or Field Welding
4)Delivery and
Installation
Sandvik Process Systems
2)Polishing
Application example – thin film
casting production line
Polymerization
Unit
Casting
Unit
Vertical
Dryer
Cooling
Zone
Tenter
(Horizontal)
Tenter
(Vertical)
Control
Unit
Air Handling
System
Steel belt casting unit
Dryer oven
Die
Belt conveyer
with polished belt
Sandvik Process Systems
Winder
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
Sandvik Process Systems