Scrimber and manufacturing method thereof

Abstract

The invention discloses a scrimber and a manufacturing method thereof. The scrimber is prepared by the following steps: taking braches as raw materials, and cutting, peeling and grinding the branches into bunchy macrofiber; removing hemicelluloses and pectin; dipping a water soluble phenol formaldehyde adhesive; extracting free phenol and water content of the free phenol in vacuum; warmly pressing into sections; performing curing; and performing after curing. The physical and mechanical properties of the scrimber are as follows: the density is between 0.9 and 1.3g / cm<3>; the hardness is between 60 and 120MPa; the static bending strength is between 90 and 150MPa; the water-absorbing expansion rate is between 0.3 and 2 percent; and the formaldehyde emission is between 0.1 and 0.4mg / L. The invention has the advantages that: the invention provides a scrimber product with no mold, no crack and no horizontal warpage; the manufacturing method for the scrimber has reasonable process, high efficiency, low energy consumption and no environmental pollution, the production flow has strong continuity and high connection degree, and the scrimber can be produced on a large scale; and the prospect of fully utilizing branch resources is better.

Description

【Technical field】 [0001] The invention relates to the technical field of processing wood or similar materials, in particular to the processing and manufacturing of wood-based panels, in particular to a recombined wood and a manufacturing method thereof. 【Background technique】 [0002] In 1973, the Australian Commonwealth Institute of Science and Industry (CSIRO) scientist JOHN DOUGLASCOLEMAN put forward the technical idea of ​​"recombined wood" (SCRIMBER OR VALWOOD), which is to roll small-diameter wood, residual wood and other raw materials into a vertical without fracture, horizontal The separated wood bundles are bonded by sizing and hot-pressed into wood-based panels of various specifications. In 1986, the Australian Southern Timber Company established a factory based on this technology for production, but in actual production, due to many problems, the factory stopped production in 1991. The main technical problems are: lateral warping and uneven density distribution o...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiencies of the prior art, aim at the problems of unstable quality of recombined wood products, easy to mildew, easy to crack, easy to warp in the horizontal direction, etc. Warped recombined wood products; another purpose of the present invention is to provide a kind of reasonable process, high production efficiency, low energy consumption and good product quality for the problems of high energy consumption and low efficiency in the existing production technology of recombined wood. Method of manufacturing reconstituted wood