Wood end sealing and cracking preventing method based on high molecular materials

Abstract

The invention discloses a wood end sealing and cracking preventing method based on high molecular materials. The wood end sealing and cracking preventing method comprises the following steps that A, wood needing to be subjected to end sealing and cracking preventing and the high molecular materials are prepared; B, the high molecular materials are subjected to heating treatment, and after heating,the high molecular materials become fluid from solid; C, the ends of the two ends of the wood are coated with the fluid-state high molecular materials, so that attaching force is generated between the high molecular materials and the wood; D, the high molecular materials are subjected to air cooling and become solid from fluid; E, the high molecular materials are cooled and solidified, and finally a high-strength coating layer is formed; F, the coating layer is ground or tailored; and G, the cooled wood coated with the high molecular materials is transferred to other procedures to be subjected to slicing machining. By means of the wood end sealing and cracking preventing method, the functions that the high molecular materials are used for replacing paper adhesive tape, batten slicing or saw cutting is conducted, after wood is rotationally cut or subjected to saw cutting, manual paper adhesive tape pasting is not needed, the work efficiency is improved, manual work is saved, the wood is fixed and dragged, and the wood cannot be cracked are achieved.

Description

technical field [0001] The invention relates to the field of wood, in particular to a wood end-sealing and anti-cracking method based on polymer materials. Background technique [0002] Wood is a lignified tissue formed by plants capable of secondary growth, such as trees and shrubs. After the end of the primary growth of these plants, the vascular cambium in the rhizome begins to move, developing bast outward and inward Wood, wood is a general term for plant tissues that develop inwardly from the vascular cambium, including xylem and parenchyma rays. Wood plays a great supporting role in human life. [0003] Due to its structure, wood is prone to cracking and wire drawing during its storage, processing, transportation and use. It is specifically divided into surface cracking, internal cracking, end cracking, wheel cracking and other cracking methods. Among them, end cracking is the most common way of wood cracking. End cracks are also known as end cracks. End cracks are l...

AI Technical Summary

Problems solved by technology

[0003] Due to its structure, wood is prone to cracking and wire drawing during its storage, processing, transportation and use. It is specifically divided into surface cracking, internal cracking, end cracking, wheel cracking and other cracking methods. Among them, end cracking is the most common way of wood cracking. End cracks are also known as end cracks. End cracks are limited to the end face of the wood, or extend to one or both sides of the end. The latter is usually called splitting. The main reason is that the water conductivity of the wood along the grain is much greater than In the transverse grain direction, when the wood is dry, the water evaporates from the end surface much faster than from the side surface, the moisture content of the end is lower than that of the middle, and the shrinkage of the end is limited by the middle wood, so tension (stretching) occurs at the end Stress, when the tensile stress exceeds the tensile strength of the transverse grain of the wood, the end surface cracks. The traditional anti-cracking method is to use artificial sticking tape to prevent the cracking of the sliced ​​veneer. The specific application process is to slice the wood into pieces. Thin veneer, and then manually paste paper tape on both ends of the veneer to prevent the veneer from cracking. A piece of wood can cut tens of thousands of veneers. Workers need to manually paste two pieces of paper tape on each veneer, which is inefficient and Anti-crack effect is not very ideal

Images