Natural veneer because of its material itself determines its particularity, so in the cutting process will inevitably produce a variety of defects. Today Xiaobian for you to answer in detail.

1. Wormholes

Bark with small round holes in the form of moth-eaten, major defects will not be accepted.

2. Mold

Black brown mildew spots on the veneer surface, major defects are not accepted.

3. Pollution

There are other colors on the veneer surface, white plug 9# is acceptable, beech 25# pollution diameter greater than 5mm is unacceptable, less than 5mm is acceptable, slight pollution can be removed by sanding is acceptable.

4. Color difference

A single piece of bark mixed with obvious color difference, white bolt 9# acceptable, beech 25# unacceptable.

5. Knife marks

The surface of the veneer has strips or flaky convex or concave stripes. The height of the convex or concave stripes is greater than 0.3mm and is unacceptable. The height of the convex or concave stripes is less than 0.3mm.

6, the glue line did not add color fine

9#, 25# color veneer has white colloids at the stitching line, major defects are not accepted.

7. Overlap

The adjacent two pieces of wood are overlapped on the top and bottom, and there is a significant difference in the hand feel, and major defects are not accepted.

8. Small size

The specification size is less than the standard size, which is a major defect and not acceptable. Tolerance 5mm

9. Uneven thickness

Veneer thickness less than 0.3mm greater than 0.6mm, is a major defect is not accepted. Standard thickness: 0.55±0.05mm

10. Famine

Veneer local lack of meat, surface uneven, light inspection or bright spots, serious is not accepted, slightly divided into the front and back acceptable, the front is convex surface, the reverse is concave.

11. Collapse

There is a gap on the veneer surface, and the gap diameter is less than 1mm, which is acceptable for repair, but greater than 1mm is unacceptable.

12. Stutter and punch

There is a hole in the bark stutter, the hole is less than 1mm, the repair is acceptable, greater than 1mm is not acceptable.

13. Dog teeth

There are continuous or intermittent small gaps in the veneer splicing, and repair is acceptable.

14. Burst

There is a gap at the end or in the middle of the veneer, and the repairable gap is acceptable, otherwise it is not acceptable.

15. Shadow pattern

The surface has wavy stripes, and the color difference between the uneven stripes and the stripes is unacceptable.

16. Snow flakes

Fish scales on the surface of wood are not acceptable.

17. Clip the skin

The surface of the bark is flaky due to the lesion surface, but it does not decay, and white Supra9 # and beech 25# are acceptable.

18. Mineral line

There are colored lines on the surface of the veneer, white bolt 9# and beech 25# are acceptable.

19, dead color

There are linear or flaky black things on the surface of wood bark, white cork 9# is acceptable, beech 25# is not acceptable.

20. Decay

Due to the disease, the material is loose and rotten, and major defects are not accepted.

The above is the introduction of the relevant defects of natural veneer, I believe that you can understand through reading.