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Source:互联网Author:qyadmin Addtime:2019-11-13 17:15 Click:

pcb backup board Types


Melamine Paper Backup Board


Thickness Range: 2.70mm
Standard sizes: 37 x 49"; 41 x 49"; 43 x 49"
Thickness tolerance: ±0.15mm
Size tolerance: ±3mm
Density:>900 kg/m3, Hardness: 75±5 Shore D
Warpage: Less Than 0.6% of diagonal
 
Application: Drill backup boards
 
Advantages:
-It is a fiberboard coated with melamine papers.
-manufactured for MLB & delicate drilling.
-Reduced drill wear and Environment friendly
- Adequate hardness and special structure results for
reduction of burrs/less deburring. 
 

Melamine Laminated Wood Backup Board


Thickness Range: 2.00mm & 2.50mm
Standard sizes: 37 x 49"; 41 x 49"; 43 x 49"
Thickness tolerance: ±0.15mm
Size tolerance: ±3mm
Density:>1150 kg/m3, Hardness: 85±5 Shore D
Warpage: Less Than 0.6% of diagonal
 
Application: Drill backup boards
 
Advantages:
 
-It is a Melamine laminated wood backup board.
-Excellent performance in micro-hole drill.
-Nice drill wall quality, Reduced drill wear
-Cheap and Environment friendly. 
 

Wood Backup Board


Thickness Range: 2.20mm to 2.70mm
Standard sizes: 37 x 49"; 41 x 49"; 43 x 49"
Thickness tolerance: ±0.15mm
Size tolerance: ±3mm
Density:>900 kg/m3, Hardness: 75±5 Shore D
Warpage: Less Than 0.6% of diagonal
 
Application: Drill backup boards
 
Advantages:
 
-Excellent for small hole drilling
-The enough hardness result of reduction of burrs whereby
the deburring is shorter or can eliminated.
-Homogeneous high-density core guarantees excellent
chipping and good cleaning of the drill.
-High pure and high-density wood fibers clean the cutting
edges of drill and thus keep the life longer.
-The drill debris can removed through the drill flute
that reduces the danger of drill breakag

pcb backup board
 

Aluminum Drill Entry sheet

Thickness Range: 0.14mm to 0.20mm
Standard sizes: 36 x 48"; 40 x 48"; 42 x 48"
 37 x 49"; 41 x 49"; 43 x 49"
Thickness tolerance: ±10%
Size tolerance: ±3mm, Roughness: 3.5 ±1µm
Warpage: 1% of diagonal
 
Application: Drill entry boards
 
Advantages:
 
-Protects CCL from scratches and pressing marks.
-Excellent results for high speed drilling.
-Extends the life of drill machine/drill bits.
-Avoids oxidation of the surface.
-Burr-free drilling and excellent hole wall quality.


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