Purpose
White Cushion (Amine-Coated Cushion) is a kind of new type drilling cushion for small hole, and is applicable for 0.15mm or less hole on precise multi-layer circuit board. It is designed for substituting bakelite board for meeting the requirements of IS014000.

Technical Parameters:

Code
Items
Unit
Standard

1
Standard Thickness
mm
2.3~2.7í+0.2

2
Density (Weight)
g/cm3
880í+40

3
Water Content
%
[5

4
Non-Straightness of Edge
mm/m
í+1.0

5
Flexural Strength
Max Turnup /Diagonal
[0.5%

6
Elastic Modulus
Mpa
í¦3200

7
Internal Bonding Strength
Mpa
ú+1.0

8
200C/24hThickness Expansion after Absorbing Water (Bared)
%
í_35

9
Static Bending Strength
Mpa
í¦35

10
Size Stability
Thickness Direction
%
-4.5 or 5

Length Direction
%
-0 or 1.50

11
Surface Hardness
N/mm2
80í+5

12
Formaldehyde Release
mg/100g
[40