Adhesive transfer tapes for FPC & general-purpose
Double coated tapes with low outgas and superb heat resistance.
Products Category Double coated tapes
Please select the product name :  
T4900/T4900W

Product name

 T4900/T4900W

Suitable use

 For general-purpose, and fixing of FPC reinforcement/equipment body.

Application

 Computers / AV / Cellular phones / Automobiles

Features
  • Highly adhesive to FPC backing materials (PET, polyimide and metal).
  • Resistant to high-temperature conditions for solder reflow. Little degradation of adhesive and release paper after reflow.
  • High processability and workability.

*Succeeding model of T4100/T4100W
   
   

Structure

Specifications
Product name T4900 T4900W(※2)
Main component Acrylic base Acrylic base
Carrier Non-carrier Non-carrier
Color Semi transparent Semi transparent
Adhesive thickness(µm) About 50 About 50
Release paper thickness(µm) About 90 About 90+130
Bonding strength(N/20mm) 9 9
St'd size (width & length) 500mm x 100m 500mm x 100m 

※   UL certificated. UL file (No.MH15431)
※2  T4900W: With both side release paper.

Application Example
For adhesion of FPC (flexible print circuit) main body and reinforcement.
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Technical Data
1.Bonding strength on various type of substrate (180° peeling) 180°Peeling strength test
Test Piece Condition
Tape width: 20mm
Bonding condition One stroke with 2-kg roller
Measuring condition: 23°C±5°C 60%±20%RH
Peel speed: 300mm/min
Backing material: 25 µm PET
  • [Left at RT for one hour before measurement]
Results
2.Peeling strength (180° peeling) 180°Peeling strength test
Test Piece Condition
Attach adhesive tape to polyimide (kapton® 111H) and reflow without removing release paper before measurement under the following conditions.
For reflow conditions, see the reflow graph (maximum temperature: 240°C)
Substrate: Polyimide (kapton® 100H)/adhesive
Tape width: 20mm
Bonding condition: One stroke with 2-kg roller
Peel speed: 300mm/min 
  • [Left at RT for one hour before measurement]
Results
3.Peeling strength of release paper before and after reflow
(T-type peeling and appearance of release paper)
Test Piece Condition
Pretreatment: Reflow release paper/adhesive/kapton® 100H before measurement.
Measuring condition: 23°C±5°C 60%±20%RH
Peel speed: 300mm/min
Results
4.Holding Power at different temperatures Holding power test
Test Piece Condition
Substrate: Stainless steel plate (SUS304)
Bonding area: 25mm x 25mm
Bonding condition: One stroke with 2-kg roller
Backing material: 25µm PET
  • [Left at RT for one hour and then at each temperature for 30 minutes before measurement]
  • [Creep length after one hour application of 1-kg load]
Results
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caution The technical data in this document, which was acquired based on reliable tests, does not guarantee full performance as per the documentation in any instance. Users assume total responsibility and risk for use of this product for any purpose under any usage conditions.
※"kapton® Polyimide film" is a registered trademark of DuPont Co,Ltd. in the United States.