Products

Double coated tapes for LCD modules

With both light blocking and reflecting effects for fixing of liquid crystal displays or backlight units.


Comparison

Please select the product name :


image

Product Name

 G7580HBK

Suitable use

 For LCD modules

Application
  • Computers/
  • AV/
  • Cellular phones

Features
  • Environmentally friendly non-solvent manufacturing method.
  • Black face for light shielding effects, white face for light reflecting effects.
  • Low total tape thickness, effective in the reduction of product thickness.
  • Halogen free.
  • G7560HBK, a thinner type of G7580HBK, also available.
non-solvent manufacturing method

Structure

Structure

Specifications

Product Name G7580HBK
Main component Acrylic base
Carrier 20 µm PET
Color White side/black side
Adhesive thickness(µm) About 85
Release film thickness(µm) About 50 for white side/about 38 for black side
Bonding strength(N/20mm) 15
St'd size (width & length) 500mm x 100m

*G7580HBK: With both side release film.
*Patent No.: 3690298
*Adhesiveness: Measured value in a peeling test for 90° peeling strength against PC.


Application Example

Application Example
For fixing of LCD modules and backlight units.

Top of page

Technical Data

1.Bonding strength (180° peeling)


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: 25µm PET
  • [Left at RT for one hour before measurement]
Results
Substrate (N/20mm)
SUS 15.7

2.Bonding strength (90° peeling)


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: 25µm PET
  • [Left at RT for one hour before measurement]
Results
Substrate SUS PC HC treated polarizer
(N/20mm) 17.7 15.1 5.9

3.Holding Power


Test Piece condition
Bonding area: 25mm x 25mm
Bonding condition: One stroke with 2-kg roller
Measurement temperature: 80°C
  • [Measurement of creep length (mm) after one-hour application of 1-kg load]
Results
Substrate SUS PC HC treated polarizer
(mm) 0.6 0.5 0.5

4.Impact force resistance


Test Piece condition
Substrate: ABS (50 mm square)/ Acrylic plate (15 mm square)
Bonding area: 15mm x 15mm
Test atmosphere: 10°C
Impact force: Dropping 300g weight onto the ABS face from a height of 15cm
  • [Left at RT for one day after adhesion, and then under each test condition for 30 minutes before measurement]
  • [Check whether the acrylic plate has been dropped]
Results
Impact force resistance(n=5) No dropped nor peeled portion found

5.Curved surface bending


Test Piece condition
Substrate: ABS PLATE Thickness 2.0 x 25 x 200mm
Aluminum plate Thickness 0.5 x 20 x 150mm
Bonding condition: One stroke with 2-kg roller
Test atmosphere: 50°C / 80°C
  • [Left at RT for 24 hours before measurement]
  • [Measurement of lifting height (mm) at ends at predetermined times]
Results
Curved surface bending(1hr) No lift.

6.VT Strength


Test Piece condition
Substrate1: HC treated polarizer(Black)
Substrate2: PC plate(White)
Bonding area: 2.5 x 2.5cm
Peel speed: 10m/min
  • [Left at RT for one day before measurement]
Results
VT Strength(N/6.25cm2) 149

7.Optical characteristics


Test Piece condition
Wavelength: 550nm
Reflectance: Measured on white face
Light resistance: Measured on black face
  • Reflectance/light resistance (measured with spectrophotometer).
    *Reference values for reflectance and light resistance.
Results
Radiation surface Test item
Reflectance Light resistance
White About 75.2% -
Black - Greater than 99.9 %

<Comparison of light blocking ability>
A light (source: halogen lamp, 12 V, 100 W) is shone on a white face and how the light is transmitted from the other black face is observed visually.

Results
Our traditional product G7580HBK
Top of page
coution
Note on the characteristic data given - Data on the characteristics of the products described in this page based on the results of evaluations carried out by the company. This does not guarantee that the characteristics of the product conform with your usage environment. Before use, review the usage conditions based on evaluation data obtained from the equipment and substrates actually used.