Production method of densified bamboo board

Abstract

The invention discloses a production method of a densified bamboo board. The method comprises the following steps: cutting bamboo into sections, slicing, polishing a bamboo partition protruding part on a green surface, and milling a yellow surface in a fixed thickness manner to manufacture bamboo chips; placing the bamboo chips in a water pool, soaking for 1-2 h, air-drying the surfaces of the bamboo chips, pushing the bamboo chips into a steam treatment tank, and keeping the bamboo chips for 7-10 min in the environment with the pressure being 1.2-1.5 MPa and the temperature being 190-200 DEG C; performing longitudinal flattening: extruding and flattening the bamboo chips through a bamboo chip unfolding machine; fixing width and fixing thickness: planing the flattened bamboo chips to the standard thickness in a finish planer, and performing fixed-width saw cutting on the planed bamboo chips; carrying out mould compacting: placing the bamboo chips with the fixed width and the fixed thickness in a steam mould pressing machine, performing mould pressing in the environment with the temperature ranging from 190 DEG C to 220 DEG C and the unit pressure ranging from 2 MPa to 4 MPa, cooling, and taking out the bamboo chips; performing vacuum drying: placing the bamboo chips obtained after mould pressing and compacting in a high-frequency vacuum drying tank, and in the environment with the vacuum degree ranging from -0.090 Mpa to -0.075 Mpa, heating the bamboo chips to 40-55 DEG C, and keeping for 18-23 hours; and performing board forming: placing the dried board at the room temperature, aging for 7-10 days, and then machining and forming the board into the needed shape.

Description

technical field [0001] The invention relates to the field of bamboo material processing, more specifically, to a production method of compacted bamboo boards. Background technique [0002] At present, the commonly used bamboo boards in the market are mainly bamboo furniture boards and bamboo glulam. The surface is similar to wooden boards. The surface is beautiful, the texture is fresh, the color is natural, and the texture is elegant. The strip structure is divided into flat-pressed bamboo boards, side-pressed bamboo boards, I-shaped bamboo boards, vertical and horizontal bamboo boards, bamboo veneer and multi-layer boards. Ordinary bamboo boards are more prone to insects and mold. During long-term use, the glued layer will be deformed and cracked by the environment, which restricts the large-scale use of bamboo in daily life. [0003] The main methods of bamboo wood densification are chemical methods and mechanical methods. Chemical methods are easy to damage the natural ...

AI Technical Summary

Problems solved by technology

Ordinary bamboo boards are prone to insects and mold. During long-term use, the glued layer will be deformed and cracked by the environment, which restricts the large-scale use of bamboo in daily life.

[0003] The main methods of bamboo wood densification are chemical methods and mechanical methods. Chemical methods are easy to damage the natural structure of the material and cause environmental pollution, while mechanical methods include compression shaping, surface compaction, impregnation and compaction, etc. The biggest disadvantage of mechanical methods is that they are easy to rebound after compression. ; and because the vascular system of bamboo is relatively developed, and sugar is the main component of cellulose and hemicellulose, hemicellulose is easy to absorb moisture, and the ends of bamboo are prone to mildew, resulting in the failure of large-scale application of bamboo boards

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