CN100345668C

CN100345668C - Bamboo-wood composite section bar production method

Info

Publication number: CN100345668C
Application number: CNB2004100931315A
Authority: CN
Inventors: 郎妙金; 郎妙国; 宣生鹤; 施德强
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-12-14
Filing date: 2004-12-14
Publication date: 2007-10-31
Anticipated expiration: 2024-12-14
Also published as: CN1788950A

Abstract

The present invention relates to a method of processing and using bamboo materials and timber. In the existing method of combination consolidation molding materials, a single kind of material is used, so that the materials are frequently out of supply; the fibre structure of the bamboo materials is damaged to a great extent. The present invention is characterized in that green part of bamboo is eliminated, the bark of timber is eliminated, bamboo and timber plate blanks are mechanically laminated, the plate blanks are formed by hot pressing, drying, gluing, ageing, compounding and high temperature hot pressing to solidify with the glue contents of 3 to 5 %. The present invention makes use of the organic combination of the bamboo materials and the timber, which effectively solves bottleneck problems of the existing materials; the present invention basically has less damage to the fibre structure to the materials and low glue consumption.

Description

The manufacture method of bamboo-wood composite section bar

Technical field

The present invention relates to a kind of method of bamboo wood and timber being carried out processing and utilization.

Background technology

Merely timber or bamboo wood being carried out method for processing has a lot, the patent No. is the method that 99117809.2 Chinese invention patent discloses a kind of recombining bamboo material into reinforced shapes, it is split into the bamboo silk with mao bamboon, and impregnation dress mould is suppressed and curing molding through high pressure more after drying.The method has improved the utilization rate to bamboo wood, the good stability of section bar, but have following defective: 1) raw material is full bamboo all generally, and it is too single to draw materials, and raw material supply is nervous; Can produce a large amount of waste materials when 2) mao bamboon is cooked the well-thought-out plan silk, comprise dust, particle, part and fracture of wire, reduce utilization ratio of raw materials; 3) fiber elongation method is handled bamboo wood, makes the fibre structure of bamboo wood be subjected to destroying largely, will use the glue of more amount in the regrouping process, and cost is high and strengthened the density (proportion) of section bar.

Summary of the invention

The technical assignment of technical problem to be solved by this invention and proposition is to overcome the defective that above-mentioned prior art exists, and a kind of manufacture method of bamboo-wood composite section bar is provided, and makes the utilization rate of material higher, and it is more extensive to draw materials; Utilize the characteristics of bamboo timber matter to avoid when compacting, destroying the fibre structure of material.

The technical solution adopted in the present invention is as follows: the manufacture method of bamboo-wood composite section bar, it is characterized in that bamboo wood is gone green grass or young crops, timber peeling, through cal rolling well-thought-out plan matter and wooden base sheet, the base sheet is through heat treatment, drying, gluing, ageing, compound assembly dress mould, the gel content of base sheet is 3-5%, changes into section bar after elevated temperature heat presses solidly.The product that the present invention makes has both performances of bamboo wood concurrently, and density is (1.05-1.15g/cm suitably ³), and utilize the characteristics of both materials, and make material bonding tightr, in pressing process, can not destroy the fibre structure of material basically, spread is few.The present invention adopts the cal rolling method, and technology is simple, and adding does not have the generation of bamboo wood powder dirt man-hour, raw material is fully exploited, and makes drawing materials of bamboo wood and timber more extensive.

The manufacture method of described bamboo-wood composite section bar, carrying out Fixed width with the dull and stereotyped clamping of the mould that leads to vapour, water blank before high temperature hot pressing decides thick, also can reach thick surely requirement by regulating pressure size and proportion scale, length≤the 2.5m of control section bar, width≤1.3m, thickness≤11cm makes the breadth of product big, easy to use and processing.

The manufacture method of described bamboo-wood composite section bar, bamboo wood is selected the leftover pieces after mao bamboon, assorted bamboo, small-bore bamboo or the bamboo processing for use, timber can be selected willow, willow or the timber leftover pieces after processing for use, this is the advantage that adopts compaction technology to bring, make and draw materials more extensively, solved the raw material bottleneck problem effectively.

The manufacture method of described bamboo-wood composite section bar, used glue are water-fast glue, and this water-fast glue is selected modified phenolic, modified cyanurotriamide glue or soluble polyurethane for use.

The manufacture method of described bamboo-wood composite section bar, the base layer that is used for composite material can be simple bamboo matter base layer or wooden base layer, also can be that bamboo wood mixes the base layer, each base layer is pressed the native texture order and is arranged, and helps eliminating internal stress, makes product be difficult for sticking up, splitting.

The manufacture method of described bamboo-wood composite section bar, section bar is composited by three layers, and upper and lower superficial layer is a bamboo matter base layer, and sandwich layer is wooden base layer, guarantees the intensity on section bar surface preferably, and the bamboo texture of section bar is clear naturally.

Technology of the present invention is simple, utilizes the combination of bamboo wood and timber, has following beneficial effect: 1) raw material can adopt source abundant, cheap assorted bamboo and willow, and the residue after the processing of bamboo timber, has solved the bottleneck problem of existing raw material effectively; 2) do not destroy the intrinsic fibre structure of raw material basically, make the cemented surface of storeroom little, glue consumption is few; 3) seldom produce dust, particle and part fracture of wire, utilization ratio of raw materials is higher; 4) product that makes is difficult for sticking up, splitting, and surface property is better.

Description of drawings

The invention will be further described below in conjunction with drawings and Examples.

Fig. 1 is a schematic flow sheet of the present invention.

The specific embodiment

As shown in the figure, the manufacture process of bamboo-wood composite section bar is as follows:

Raw material is handled: bamboo wood, timber is sawed-off by specification, and bamboo wood goes green grass or young crops then, the timber peeling.

Roll: raw material is pressed into the base sheet that inequal cleavage stitches, and thickness is 2-5mm, and width is 2-30mm, and length is random.

The heat treatment of base sheet, drying, gluing, ageing: heat treatment is the base sheet to be soaked in hot-tub or logical with steam, to reach purpose softening, anticorrosion, mildew-resistant, make moisture content be controlled at 8-10% when dry, sizing material adopts the phenol glue of modification, the gel content of base sheet is controlled at 3.5-4.5%, ageing is meant places a period of time to the raw material after the gluing, makes glue more even in material.

Assembly: the compound integrated assembly of bamboo wood, upper and lower superficial layer is a bamboo matter base sheet, and sandwich layer is wooden base sheet, and each layer pressed the texture order and arranged.

Fixed thick Fixed width: with leading to width and the thickness that the upper and lower two hot-die flat boards that steam G﹠W fix the base sheet, the length≤2.5m of section bar, width≤1.3m, thickness≤11cm.

High temperature hot pressing is also solidified: temperature is 110-120 ℃, and unit pressure is 2-9mpa/cm ²

Claims

1, the manufacture method of bamboo-wood composite section bar, it is characterized in that bamboo wood is gone green grass or young crops, timber peeling, through cal rolling well-thought-out plan matter and wooden base sheet, the base sheet is through heat treatment, drying, gluing, ageing, compound assembly dress mould, the gel content of base sheet is 3-5%, changes into section bar after elevated temperature heat presses solidly.

2, the manufacture method of bamboo-wood composite section bar according to claim 1 is characterized in that before high temperature hot pressing clamping blank to carry out Fixed width fixed thick, the length≤2.5m of control section bar, width≤1.3m, thickness≤11cm with the mould of logical vapour, water is dull and stereotyped.

3, the manufacture method of bamboo-wood composite section bar according to claim 1 is characterized in that the leftover pieces after bamboo wood is selected mao bamboon, assorted bamboo, small-bore bamboo or bamboo processing for use, and timber is selected willow, willow or the timber leftover pieces after processing for use.

4, the manufacture method of bamboo-wood composite section bar according to claim 1 is characterized in that used glue is water-fast glue, and this water-fast glue is selected modified phenolic, modified cyanurotriamide glue or soluble polyurethane for use.

5, the manufacture method of bamboo-wood composite section bar according to claim 1, the base layer that it is characterized in that being used for composite material is simple bamboo matter base layer or wooden base layer, or bamboo wood mixes the base layer, each base layer press the arrangement of native texture order.

6, the manufacture method of bamboo-wood composite section bar according to claim 1 is characterized in that section bar is composited by three layers, and upper and lower superficial layer is a bamboo matter base layer, and sandwich layer is wooden base layer.