| The veneer bleaching method is widely used, mainly for the pretreatment process of the technology wood manufacturing. For deep bleaching, the whiteness inside and outside the veneer is required to be uniform. (1) Bleaching formula H2O2 concentration 5% Additive (two) process The middle of the paulownia veneer is separated by a stainless steel mesh. Put it into the bleaching treatment, compact it, and pour in the liquid that has been adjusted according to the formula. The treatment tank was closed, soaked for 5 minutes, then heated to 70 ° C in 30 minutes, and kept at a constant temperature for 2 hours. Keep the liquid flowing during the bleaching process. Drain the residual liquid, wash it again, take it out, and dry it. | |
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