Double coated tapes

Double coated tapes for LCD modules

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

  • Product name
    S7730HBK/S7750HBK/S7760HBK/S7780HBK
  • Features
    • Black side offers high light-blocking and shielding ; white side offers high reflectivity.
    • Suitable for miniaturizing products.
    • PET carriers for excellent handling and punching process.
    • Halogen-free.

Product Lineup

Structure

Specifications

Product name S7730HBK S7750HBK
Main component Acrylic base Acrylic base
Carrier About 20µm printed PET film About 18µm printed PET film
Color Black side / White side Black side / White side
Adhesive thickness(µm) About 30 About 50
Release film thickness(µm) About 38+38 About 38+38
Bonding strength(N/20mm) *1 8 13
St'd size(width & length) 500mm x 100m 500mm x 100m
Warranty period from manufacturing date 12 months 12 months
Product name S7760HBK S7780HBK
Main component Acrylic base Acrylic base
Carrier About 18µm printed PET film About 26µm printed PET film
Color Black side / White side Black side / White side
Adhesive thickness(µm) About 60 About 85
Release film thickness(µm) About 38+38 About 38+38
Bonding strength(N/20mm) *1 13 16
St'd size(width & length) 500mm x 100m 500mm x 100m
Warranty period from manufacturing date 12 months 12 months
  • *1180° peeling strength
  • *2With both side release film.

Ideal for bonding LCD panels to backlight units.

1.Bonding strength on various type of substrate (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
Peeling speed:300mm/min
Backing material:25µm PET

[Left at RT for one hour before measurement]

Results

(N/20mm)

180° peeling strength Product name Substrate
SUS PC Glass HC-TAC film
S7730HBK 8 8 8 7
S7750HBK 13 11 12 11
S7760HBK 13 11 12 11
S7780HBK 16 15 15 15
  • ※ HC-TAC film is processed saponification.

2.Holding power at different temperatures

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
Creep length(mm) Product name Measurement temperature
40°C 80°C
S7730HBK 0.2 0.3
S7750HBK 0.2 0.4
S7760HBK 0.2 0.4
S7780HBK 0.3 0.6

3.Optical characteristics

Test Piece Condition

Wavelength:550nm
Reflectance:Measure on the white side
Light resistance (transmittance):Measure on the black side

[Measured with spectrophotometer]

Results
Optical characteristics Product name Reflectance
(White side)
Transmittance
(Black side)
S7730HBK About 73% 0.1% or less
S7750HBK About 68% 0.1% or less
S7760HBK About 68% 0.1% or less
S7780HBK About 75% 0.1% or less

caution

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.

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