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

Rubber Glue Dome Array | Dongchen

The lower adhesive type (PCB adhesive board) POLYDOME, SPACER is double-sided adhesive tape, and POLYDOME is firmly attached to the PCB board.

The lower adhesive type (PCB adhesive board) POLYDOME, SPACER is double-sided adhesive tape, and POLYDOME is firmly attached to the PCB board.

图片1

1. The DOME (PET)

2. Spacer

3. Conductive point (silver paste, carbon paste)


Product parameters:

1. Adhesive:

 


(mm)

thichness

initial force

retentivity(hr/kg*inch)

adhesive force(kgf/inch)

Rubber material/project





Transparent/white one side glue

·

 

thickness of adhesive0.035~0.05

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

·

 

8↑

0.6

2.Conductive point: silver-carbon mixture, printing thickness:0.006~0.008

silver-carbon mixture

resistance


<30Ω

3.Product parameters

 


 

KEY point diameter(mm)

FORCE(g)

CLICK(%)

springbackFR(g)

STROKE(mm)

LIFE

Environmental testing conditions

DOME








0.1PET

Φ4.5~5.0

100~180

45~75

>25

0.3~0.45

30

70℃85%RH48hrs

0.125PET

Φ5.5~6.0

160~260

45~75

>30

0.4~0.55

50

70℃85%RH48hrs

4. Tolerance requirements:

project

positioning hole to positioning hole(mm)

Positioning hole to shape(mm)

Shape to shape(mm)

Hole diameter(mm)

Positioning hole to key(mm)

/sample






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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