Products

Metal foil type single coated tapes

Single coated tapes developed for EMI shield and countermeasure against static electricity.


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Product name

 CU7040

Suitable use

 For shielding

Application
  • Computers/
  • AV/
  • Game machines/
  • Cellular phones

Features
  • The adhesive is coated on 35µm electrolytic copper foil.
  • Allows soldering for grounding.

Structure

Structure

Specifications

Product name CU7040
Main component Acrylic base
Carrier About 35µm electrolysis copper foil
Color Copper color
Adhesive thickness(µm) About 85
Release paper thickness(µm) About 115
Bonding strength(N/20mm) *1 20
St'd size(width & length) 500mm x 50m
Warranty period from manufacturing date 12 months

*1 180° peeling strength


Application Example

Application Example
Ideal for shielding the interior of computers and cellular phones.

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Technical Data

1.Shielding effects and properties


Test Piece condition
  • Shielding effects of the product under a magnetic or electric field were measured using a device for measuring electromagnetic wave shielding effect (the KEC method).
Results
(dB)
The shielding effects Product name Measuring method Freguency
30MHz 100MHz 300MHz
CU7040 Under an electric field 64 87 86
Under a magnetic field 71 68 70

2.Bonding strength at different temperatures (180° peeling)


Test Piece condition
Substrate: Stainless steel plate (SUS304)
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 and then at each temperature for 30 minutes before measurement]
Results
Results

3.Reliability of bonding strength after adhesion under different conditions (180° peeling)


Test Piece condition
Substrate: Stainless steel plate (SUS304)
Tape width: 20mm
Bonding condition: One stroke with 2-kg roller
Measuring condition: 70°C
Peeling speed: 300mm/min
  • [Left at the temperature of 70°C. Measure bonding strength after 3 to 7 days heat aging]
Results
Results

4.Bonding strength after heat cycle test (180° peeling)


Test Piece condition
Substrate: Stainless steel plate (SUS304)
Tape width: 20mm
Bonding condition: One stroke with 2-kg roller
Measuring condition: 23±5°C 60%±20%RH
Peeling speed: 300mm/min
  • [A test specimen was left at RT for one hour, and a heat cycle test was conducted under the following conditions.
    -20°C x 3 hours ⇔ 25°C x 15 min ⇔ 70°C x 3 hours ⇔ 25°C x 15 min
    These conditions comprise one cycle. One to three cycles were conducted for each specimen]
Results
Results
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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.