TEL:+86-15812821892  E-mail: lushufen@dongchengdg.com

sticky on (Silicone ) carbon sleeve silver conductive dots

POLYDOME button is a carbon film convex bag button with good compression resistance. It is an appropriate switch button on various remote controls. It uses polyester film hot pressing material, which can replace metal dome ,the operation feels better, there is a noise during operation, it can have a certain waterproof effect, and can effectively prevent dust, moisture, and heat.
Carbon film convex hull button can be up and down bonding assembly, backing and septum are double-sided adhesive, that is, with silicone bonding, and PCB bonding, good stability!

图片1

1.RUBBER

2.DOME(PET)

3.(Spacer)

4.Conductive point (carbon silver)

Product parameters:

1. Adhesive:

project/

thickness(mm)

initial force

retentivity(hr/kg*inch)

adhesive force(kgf/inch)

Plastic





Rubber

0.125

10cmThe adhesive rolling distance of corresponding steel balls is less than 10cm

 

Silicone and synthetic resin

 

 

0.8Silicone              

 1.0

synthetic resin

Transparent/white one side glue

 

thickness of adhesive0.035~0.1

The adhesive rolling distance of corresponding steel balls is less than 10cm

 

8

0.6

2.Conductive point: carbon silver, first printed silver paste in the printed carbon paste, thickness: 0.008~0.012.Advantages: strong antioxidant, not easy to scratch.

Carbon silver

resistance

<10Ω

 

3.Product Specification 

specification

KEY point diameter(mm)

FORCE                 (g)

CLICK             (%)

springbackFR(g)

STROKE(mm)

LIFE

Environmental testing conditions

 

/DOME material








0.1PET

Φ4.5~5.0

100~180

45~75

>25

0.3~0.45

30

7085%RH48hrs

0.125PET

Φ5.5~6.0

160~260

45~75

>30

0.4~0.55

50

7085%RH48hrs

4.Tolerance requirement

project

/sample

positioning hole to positioning hole(mm)

Positioning hole to shape(mm)

Shape to shape(mm)

Hole diameter(mm)

Positioning hole to key(mm)







Manual sample

±0.15

±0.15

±0.15

±0.1

±0.15

Mould sample

±0.1

±0.1

±0.1

+0.08/-0

±0.1

Note: (1) the positioning hole are minimum aperture Φ 1.0 mm;

(2) the distance between the inner side of the two key points shall be greater than 1.0mm;

(3) The hole edge of the mechanism should be greater than 1.0mm from the key point;

(4) The minimum diameter of the hole of the SP piece is greater than 0.4mm than the diameter of the key point.


 5.The sample delivery


The new model(50~100pcs)

The old model(50~100pcs)

Manual sample

3 ~ 4 working days

2 ~ 3 working days

Mould sample

1 working day after the mold returns

2 ~ 3 working days

Mold delivery time: a. forming mold 3-4 working days

B. 6-7 working days for steel mold

Note: 1. The conditions for the life test are as follows: the silicone flat head of the hitting head;Diameter: Φ 1.5;Speed: 2~3 times/second;Strike power: 400-500g.

2. Life determination: a. Before and after life hitting, the rate of change of elasticity and feel of DOME is less than 30%;B. No ink shedding, no KEY point cracking.

 

CONTACT

  (+86)-15812821892
  lushufen@dongchengdg.com
    Dongcheng Huimei Technology Park,
Chashan Town, Dongguan, Guangdong, 
China

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