In NISSHA IME, functional parts such as electrode film and FPC are integrated with resin parts by insert molding.
Therefore, there is no need for adhesives such as double-sided tape that have been used for fixing.
It has the advantages of simplifying the product structure, reducing the number of parts and assembly process, and improving reliability.
●Realization of thin and lightweight products
Functional electrodes can be integrated into parts without using adhesives such as double-sided tape with NISSHA IME.
Therefore, it is the most suitable technology for making products thinner and lighter.
●Integrate electrodes even for parts with concave shapes and ribs/bosses
When fixing the electrode film or FPC with double-sided tape, it is necessary to bond them by hand or roller.
Manual work incurs large costs such as labor costs and work time.
The roller bonding method cannot handle curved surfaces where there are ribs/bosses that interfere with the rollers, or where pressure is not evenly applied.
In NISSHA IME, FPC and electrode film are integrated by insert molding, so there is no problem with such a shape.
●Improved reliability
Adhesives such as double-sided tape are prone to deterioration due to environmental factors such as vibration, ultraviolet rays, temperature and humidity, and may cause problems
such as reduced adhesive strength, generation of bubbles, and discoloration (yellowing).
The resin and film are bonded by the heat of molding in NISSHA IME.
It eliminates the need for adhesives and solves these reliability issues.
In addition, because it can realize a seamless shape, it is also excellent in waterproof and dustproof properties.
●Supports minute spaces that are difficult to bond
In electrical appliances that are becoming smaller and thinner, there is an increasing need to place electrodes and sensors in minute spaces.
In addition, the strength of adhesives such as double-sided tape decreases as the area to be bonded becomes smaller.
Bonding to a small space requires laborious manual work, which is costly and time consuming.
Electrodes and sensors can be firmly fixed by insert molding even in such a small space with NISSHA IME.
This section describes the layer structure when electrodes are inserted in NISSHA IME.
For the electrical connection method between the electrode and the board, you can select the FPC connector or the spring terminal or pin mounted on the board.
Pin connection
FPC connection
| Roller Lamination | IME | |
|---|---|---|
| curved surface | Up to 2D geometry | 3D surface is feasible (MAX：R500xR700） |
| No backside feature in specific area | Restricted (Due to a range lamination roller motion) |
Free from roller dia. restriction |
Various issues occurs in adhesive due to aging, environmental influence such as high temperature / high humidity and vibrations.
Bubbles caused at lamination process or at usage under certain emviroment. It may change sensor properties, and cause visual defect on display.
Delamination caused by aging or vibration. It may change sensor properties, and cause visual defect on display.
Yellowing caused by aging or at usage under certain environment. It may cause visual defect on display.
Adhesive absorb moisture. It may cause change of dielectric constants and change sensor properties.
Delamination issued by high temperature environment causes to change sensor properties.
Adhesive at low temperature may change dielectirc constants and change sensor properties.
NISSHA have various testing facilities.
These are examples of reliability test spec applied to Nissha IME for home appliance applications.
We can perform reliability test by our ih-house testing enviroment, feedback the result to design team, and can propose most appropriate design to customers.
| High temperature storage | Low temperature storage | High temperature high humidity storage | Heat cycle | UV resistance |
|---|---|---|---|---|
| +70°C 240Hrs |
-40°C 240Hrs |
+60°C/93%Rh 240Hrs |
-25°C/1Hrs ⇔+60°C/1Hrs 10cyc. |
Xenon weathermeter |
Please feel free to contact us.
CLICK
