Unfolding process of green bamboo strips

A technology of bamboo chips and craftsmanship, which is applied in the field of unfolding technology with green bamboo chips, can solve problems such as cracking, high hardness of bamboo greens, and material cracking, and achieve the effects of high efficiency, uniform moisture content, and avoiding cracking

Pending Publication Date: 2022-01-14
FUJIAN LONTAI BAMBOO HOUSEHOLD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the unfolding process of bamboo slices, if the bamboo slices are unfolded directly, due to the high hardness of bamboo green, there will be cracking problems, and due to the special longitudinal fiber structure of bamboo, local cracking will lead to cracking of the whole root (whole piece) material

Method used

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  • Unfolding process of green bamboo strips
  • Unfolding process of green bamboo strips

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The unfolding process with green bamboo slices comprises the following steps:

[0030] After step 1, the bamboo is segmented to obtain a bamboo tube, the bamboo tube is cut into bamboo slices with an arcuate cross section;

[0031] The diameter of described bamboo tube is 60-90mm, and the quantity that described bamboo tube is cut into bamboo chips is 3;

[0032] Step 2, the bamboo slices are pressurized and heated to soften, and the softened bamboo slices are unfolded by equal arcs to determine the thickness, and then planed to remove the bamboo yellow;

[0033] Softening conditions under pressure and heating: the pressure is 1.2MPa, the temperature is 200°C, and the time is 3min;

[0034] The expansion of constant arc thickness is as follows: use arc rollers to press the softened bamboo slices into a first-class arc shape, and then process them with equal thickness with arc knives;

[0035] Step 3, the bamboo slices after step 2 equal-arc thickness determination and...

Embodiment 2

[0041] The unfolding process with green bamboo slices comprises the following steps:

[0042] After step 1, the bamboo is segmented to obtain a bamboo tube, the bamboo tube is cut into bamboo slices with an arcuate cross section;

[0043] The diameter of described bamboo tube is 90-120mm, and the quantity that described bamboo tube is cut into bamboo chips is 4;

[0044] Step 2, the bamboo slices are pressurized and heated to soften, and the softened bamboo slices are unfolded by equal arcs to determine the thickness, and then planed to remove the bamboo yellow;

[0045] Softening conditions under pressure and heating: the pressure is 0.8MPa, the temperature is 180°C, and the time is 10min;

[0046] The expansion of constant arc thickness is as follows: use arc rollers to press the softened bamboo slices into a first-class arc shape, and then process them with equal thickness with arc knives;

[0047] Step 3, the bamboo slices after step 2 equal arc thickness determination a...

Embodiment 3

[0053] The unfolding process with green bamboo slices comprises the following steps:

[0054] After step 1, the bamboo is segmented to obtain a bamboo tube, the bamboo tube is cut into bamboo slices with an arcuate cross section;

[0055] The diameter of described bamboo tube is 120-150mm, and the quantity that described bamboo tube is cut into bamboo chips is 5;

[0056] Step 2, the bamboo slices are pressurized and heated to soften, and the softened bamboo slices are unfolded by equal arcs to determine the thickness, and then planed to remove the bamboo yellow;

[0057] Softening conditions under pressure and heating: pressure 1.3MPa, temperature 160°C, time 7min;

[0058] The expansion of constant arc thickness is as follows: use arc rollers to press the softened bamboo slices into a first-class arc shape, and then process them with equal thickness with arc knives;

[0059] Step 3, the bamboo slices after step 2 equal arc thickness determination and unfolding are graduall...

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Abstract

The invention discloses an unfolding process for green bamboo strips, and belongs to the technical field of bamboo processing. The unfolding process comprises the following steps that bamboos are segmented and sectioned bamboo strips with cambered sections; the bamboo strips are expanded in an equal-arc and fixed-thickness mode after being pressurized, heated and softened; then, double-face protection gradual flattening is conducted under the heat preservation condition till the bamboo strips are completely flattened, and a bamboo board is obtained; and the bamboo board is continuously cooled, then subjected to ballasting, shaping and drying until the moisture content is 6-10%, and then subjected to fixed-width trimming to obtain a green bamboo board finished product. According to the unfolding process for the green bamboo strips, the green bamboo strips can be unfolded on the premise that oblique notching and green planing are not conducted, the problems of cracking and rebounding cannot occur in the unfolding process, the obtained green bamboo strips are smooth and flat, the obtained green bamboo strips have the characteristic of high strength, and the application range and field of the bamboo wood are further widened through the unfolding process.

Description

technical field [0001] The invention belongs to the technical field of bamboo processing, and in particular relates to an unfolding process of green bamboo slices. Background technique [0002] Due to its fast growth rate, strong regeneration ability, and excellent physical properties, bamboo has become an important wood substitute raw material in many industries. The implementation of "replacing wood with bamboo" in some industries can effectively alleviate the contradiction between the supply and demand of wood in my country, and can also alleviate problems such as carbon emissions and the ecological environment. [0003] Bamboo is cylindrical under natural growth, and the bamboo tubes cut into sections still have a certain curvature, which needs to be unfolded (flattened) before subsequent processing. The part of the bamboo tube near the outer layer is called bamboo green, and the part near the inner layer is called bamboo yellow. The fiber density and hardness of bamboo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27J1/00B27K5/06B27K9/00B27K5/00
CPCB27J1/00B27K5/06B27K9/002B27K5/00B27K5/0085
Inventor 叶学财冯磊
Owner FUJIAN LONTAI BAMBOO HOUSEHOLD CO LTD
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