Shin-Etsu Polymer Co.,Ltd. Automotive Products
Our mission for the automobile field Product Materials Product List
Product Materials
Switch Device
Mirror Switch
Steering Switch
Audio(Control navigation switch)
Power Window
Sun Roof
Seat Memory
Remote Keyless Entry (RKE)
Climate Control Switch
Shin-Etsu Rubber Contact (RC) feature
Electrical Inter-Connection
Wiper Rubber
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Switch Device BACK
Seat Memory[Inner-type]
Seat Memory
[Inner-type]
Carbon contact
characteristics
The Inner-type Rubber-Contact futures high actuation force, high stroke, good click feeling and waterproofing.
Sectional View BACKTOP
Sectional View
Designation Material
a. Rubber contact Silicone rubber
b. Contact ( gold plated, low resistance carbon, carbon, DCP) -
c. Printed circuit board -
d. Contact(board side) -
*It is available to design dom and contact in RC.
Functions of Shin-Etsu Rubber-Contact BACKTOP
Function/type Inner-type
Contact Carbon
Contact
Conductive rubber
Conductive print

Metal Contact Gold plating
Dome Non-click
Click
Over-stroke click
PET dome



Key top printing Key top suface printing*1
Back side printing

Key top Coating*2

Standard coat (OC)
Semi-hard coat (SH)
Hard coat(HH)



Metallic tone Key top
printing
Semi-hard coat (SH)


Lighting Key top lighting
Highlight graphics

Light storage Key top light storage
Antibacterial
Material of specific gravity (White color only)
Mass production is possible.
Prototype production is possible.
Under study.
Production is not possible. 

*1 The Rubber-Contact cannot be manufactured for some key top profiles and under other conditions.
*2 Only the uppermost surface of the key top can be processed. However, the total surface can be processed for semi-hard (SH) products.
Resistance Test Results Versus Oil, Chemicals and Environment Factors BACKTOP
Test Item Test condition Inner-type
Environmental test High-temperature and high-humidity test 60, 95%RH, 240H
Temperature cycle test -20~70, 40cycles

High-temperature test 90, 240H
Low-temperature test -40, 240H
Weather resistance test* Sunshine weather menter, 150 continuous hours Yellowish
Oil and chemical resistance test Alcohol Soaked in ethanol, 12 hours
Artificial fingerprint liquid Soaked in artificial fingerprint liquid, 12 hours
Hard cream Placed in a high-temperature and high-humidty tester for 240 hours with left materials applied to the key top surface.
Olive oil
Glass cleaner
Rubbing test Methanol 100 abrasion cycles with cotton canvas moistenced with left materials prwithsed onto the key top surface with a force of 500g.
Ethanol
Toluene Swelling
Johnson Wax
Regular gasoline Swelling
Engine oil Swelling
Kerosene Swelling
* Yellowing color difference data (based on Hunter's color difference method, in pursuance of JIS K7103)
KTP-type: Standard product: gE=7.7, Improved product: gE=2.9, PB-N-type: gE=2.7
Accepted
* Circuit for acceptance
There shall ce no cracks, breaks, peeling or other visible defects. There shall be no changes in color tone or other abnormalities.

* The figures above show the changes in the characteristics under specific testing conditions, and therefore the figures are not guaranteed under actual operating conditions. Please note that the judgement will differ depending on the product specifications, and testing conditions.
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