CN100496910C - A process for manufacturing anti-crack bamboo plate - Google Patents

A process for manufacturing anti-crack bamboo plate Download PDF

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Publication number
CN100496910C
CN100496910C CNB2006100520726A CN200610052072A CN100496910C CN 100496910 C CN100496910 C CN 100496910C CN B2006100520726 A CNB2006100520726 A CN B2006100520726A CN 200610052072 A CN200610052072 A CN 200610052072A CN 100496910 C CN100496910 C CN 100496910C
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China
Prior art keywords
bar
production technology
temperature
force plane
crack
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CNB2006100520726A
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Chinese (zh)
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CN1864953A (en
Inventor
徐江
吴锡林
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杭州大庄地板有限公司
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Priority to CNB2006100520726A priority Critical patent/CN100496910C/en
Publication of CN1864953A publication Critical patent/CN1864953A/en
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Publication of CN100496910C publication Critical patent/CN100496910C/en

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Abstract

The invention relates to a method for producing anti-crack bamboo sheet. It is characterized in following steps that: poaching the bamboo plane bar at the temperature as 50-95Deg. C and the density of hydrogen dioxide solution as 1.5-6.5%; drying the poached plane bar at the temperature as 45-65Deg. C and air relative humidity as 25-65%, to the water content as 5-9%; making the dried plane bar into fine plane bar to be coated with pastern; plane or side assembling the plane bars, to be compressed and shaped at the temperature as 88+-2Deg. C; the pressure of main compress unit is 0.2-0.6MPa, and the pressure of side compress unit is 5-7MPa; maintaining it for 3-7 days at the temperature as 20-30Deg. C and the air relative humidity as 20-50%. The invention has better anti-crack effect, which can be used in bamboo floor, etc.

Description

A kind of production technology of anti-crack bamboo plate
Technical field
The present invention relates to the bamboo board technical field of producing, be specially a kind of production technology of anti-crack bamboo plate.
Background technology
Along with ecological environment is constantly destroyed, people have all over the world treated as important problem to environmental protection, the limited forest reserves of many country's restriction felling.Mao bamboon becomes the best substitute of trees with its significant advantage, mao bamboon is the fastest plant that grows in the world, can become a useful person in general 4-6 years, and traditional hardwood takes and just can use more than the 10-20, and the mao bamboon quality is hard, elasticity and toughness height, tensile strength parallel to grain reaches 170MPa, is equivalent to 2.5 times of China fir, and parallel-to-grain compressive strength reaches 80MPa, being equivalent to 1.5 times of China fir, is a kind of economic product of natural environmental-protective.Bamboo ornament materials, furniture, daily necessities etc. more and more are subjected to people and are welcome.Common bamboo board production technology, generally be processed into bamboo chip by mao bamboon, after the pest control and anticorrosion processing, sticking with glue the agent adhering and pressing forms, though the sheet material wearability of making, bending strength, hardness are all fine, but because the special fibre structure of bamboo wood, the variation that is subjected to environment temperature, humidity in the use is easy to cracking occur, and the claim incident that the product of especially selling to American-European market causes because of cracking in rapid succession.
Summary of the invention
The present invention is directed to the above-mentioned problems in the prior art, a kind of technical scheme of production technology of anti-crack bamboo plate is provided, the sheet material good toughness of making, the transverse tensile strength height, effect of anti-cracking is good.
The production technology of described a kind of anti-crack bamboo plate is characterized in that may further comprise the steps:
1) selecting mao bamboon for use is raw material, by the size of bamboo board requirement, through block, hack, force plane makes the force plane bar;
2) above-mentioned force plane bar is 50~95 ℃ of temperature, hydrogen peroxide concentration is bleached processing 1.5~6.5% times, and bleaching time is 2~10 hours, and the force plane bar after the bleaching is 45~65 ℃ of temperature, dry processing under the condition of relative air humidity 25~65%, to the final moisture content 5~9% of force plane bar;
3) Hong Gan force plane bar carries out adjustable cast iron planes, makes the adjustable cast iron planes bar, and sub-elects lining, middle material, bed material according to different quality requirements;
4) adopting modified urea-formaldehyde glue is adhesive, above-mentioned adjustable cast iron planes bar is carried out gluing handle, and coating weight is 120~160g/m 2, the specification requirement of pressing sheet material then, the method that adopts flat assembly or side to piece together is spliced;
5) under 88 ± 2 ℃ of temperature, carry out hot pressing compression moulding, the main unit pressure 0.2~0.6Mpa that presses, side pressure unit pressure 5~7Mpa, at last 20~30 ℃ of temperature, health is 3~7 days under relative air humidity 20~50% conditions.
The production technology of described a kind of anti-crack bamboo plate, it is characterized in that step 2) force plane bar bleaching handle after, carry out carbonization treatment under the saturation vapor pressure condition of 0.15~0.27Mpa, carbonization time is 120~200 minutes, and then dries processing.
The production technology of described a kind of anti-crack bamboo plate, its feature is in step 2) in, 60~90 ℃ of bleaching temperatures, hydrogen peroxide concentration 2~6.5%, bleaching time 4~10 hours.
The production technology of described a kind of anti-crack bamboo plate, its feature is in step 2) in, 70~80 ℃ of bleaching temperatures, hydrogen peroxide concentration 4.5~6.5%, bleaching time 6~8 hours, 50~60 ℃ of bake out temperatures, relative air humidity 36~40%.
The production technology of described a kind of anti-crack bamboo plate is characterized in that step 4), 5) in, the coating weight 120~150g/m of adhesive 2, main unit pressure 0.4~0.6Mpa, the side pressure unit pressure 5~6Mpa of pressing.
The production technology of described a kind of anti-crack bamboo plate, it is characterized in that the width of force plane bar is: 20-24mm, thickness is: 6.5-9mm.
The production technology of described a kind of anti-crack bamboo plate, it is characterized in that the width of adjustable cast iron planes bar is: 14.3-20.8mm, thickness is: 4-6.5mm.
The production technology of described a kind of anti-crack bamboo plate is characterized in that: carbonization pressure is 0.18~0.2MPa, and carbonization time is 150180 minutes.
The production technology of above-mentioned a kind of anti-crack bamboo plate, technology is simple, rationally, low cost of manufacture, the sheet material good toughness of making, transverse tensile strength height, effect of anti-cracking are good.This bamboo board is applicable to the making of bamboo floor, bamboo furniture plate, bamboo slicing plate, bamboo wood three-layer composite board or compound with other material.
Description of drawings
Fig. 1 is the parallel splicing construction schematic diagram of individual layer;
Fig. 2 is three layers of parallel splicing construction schematic diagram;
Fig. 3 is a side direction splicing construction schematic diagram;
Fig. 4, Fig. 5, Fig. 6 are respectively the composite board structural representation that the further Compound Machining of the product of being made by the present invention becomes, wherein, Fig. 4 for by after Fig. 1 product or the punching of Fig. 3 product with the compound structural representation that makes sheet material of braiding bamboo bar; Fig. 5 for by after Fig. 1 product or the punching of Fig. 3 product with batten, the compound structural representation that makes sheet material of rotary cut venner; Fig. 6 for by after multilayer Fig. 1 product or the punching of Fig. 3 product with the compound structural representation that makes sheet material of Fig. 3 product.
The specific embodiment
Below in conjunction with concrete embodiment, the present invention is done detailed explanation.
Select 4-6 bamboo mao bamboon in age for use, the mao bamboon diameter of a cross-section of a tree trunk 1.3 meters above the ground is 8~15 cun, be that girth is 266.6mm~500mm, size by the bamboo board requirement, felling, block into length and be respectively: 1050mm, 1300mm, 2000mm, 2350mm, 2630mm, hack again, force plane makes the force plane bar, the width of force plane bar is: 20mm or 24mm, thickness is: 6.5mm, 7mm, 8mm or 9mm.The width of adjustable cast iron planes bar is: 14.3mm, 16.7mm, 17.5mm, 18.1mm or 20.8mm, thickness is: 4mm, 5mm, 6mm or 6.5mm, tolerance is controlled at ± 0.05 scope in, and sub-elect lining, middle material, bed material according to different quality requirements.
Require to select for use above-mentioned force plane bar according to sheet material, bleach processing respectively under following process conditions: temperature is 60 ℃, 70 ℃ or 80 ℃, hydrogen peroxide concentration is 6.5%, 5.5% or 4.5%, bleaching time need be controlled in 4~10 hours according to the requirement of different-thickness and product noodles rate, bleaching can be carried out carbonization treatment to the force plane bar after handling.The process conditions of carbonization treatment are: saturation vapor pressure is 0.15Mpa, 0.18Mpa, 0.21Mpa or 0.24Mpa, and carbonization time need be controlled in 120~200 minutes according to bamboo bar thickness and product requirement.
Oven dry is handled: the force plane after bleaching or the carbonization is 45 ℃, 50 ℃, 55 ℃, 60 or 65 ℃ in temperature respectively, and relative air humidity is to dry processing under 36%, 38%, 40%, 42% or 44% condition, to the final moisture content 5-9% of force plane bar;
Gluing is handled: the employing modified urea-formaldehyde glue is an adhesive, above-mentioned adjustable cast iron planes bar is carried out gluing handle, and coating weight is 120g/m 2, 130g/m 2, 140g/m 2Or 150g/m 2
Adjustable cast iron planes bar after gluing is handled splices by Fig. 1, Fig. 2, parallel or side direction method shown in Figure 3, is pressed under following process conditions then, and hot pressing temperature is 88 ± 2 ℃; The main unit pressure of pressing is: 0.3Mpa, 0.4Mpa, 0.5Mpa or 0.6Mpa; The side pressure unit pressure is: 5Mpa, 5.5Mpa, 6Mpa or 6.5Mpa.
After being pressed into sheet material, 20~30 ℃ of temperature, under the condition of relative air humidity 20~50% health 3-7 days.Sheet material after the health need carry out thick surely sanding to be handled, and the abrasive band granularity is 60 orders, 80 orders, 120 orders, the sanding thickness deviation is ± the 0.015mm scope in.
The bamboo board of making according to Fig. 1, Fig. 2, Fig. 3, again according to Fig. 4, Fig. 5, mode shown in Figure 6, adopt conventional colding pressing or heat pressing process, can be pressed into two-layer or multilayer composite board, the adhesive host of cold pressing treatment is the carbimide emulsion, and the adhesive host of hot-pressing processing is modified urea-formaldehyde resin glue.Bamboo board manufactured according to the present invention is applicable to bamboo floor, bamboo furniture plate, bamboo slicing plate, bamboo wood three-layer composite board or compound with other material.

Claims (6)

1, a kind of production technology of anti-crack bamboo plate is characterized in that may further comprise the steps:
1) selecting mao bamboon for use is raw material, by the size of bamboo board requirement, through block, hack, force plane makes the force plane bar;
2) above-mentioned force plane bar is 80~95 ℃ of temperature, hydrogen peroxide concentration is bleached processing 5.5~6.5% times, bleaching time is 4~10 hours, bleaching is handled the back and carry out carbonization treatment under the saturation vapor pressure condition of 0.15~0.21Mpa, carbonization time is 120~200 minutes, force plane bar after the carbonization is dried processing 45~65 ℃ of temperature under the condition of relative air humidity 25~65%, to the final moisture content 5~9% of force plane bar;
3) Hong Gan force plane bar carries out adjustable cast iron planes, makes the adjustable cast iron planes bar, and sub-elects lining, middle material, bed material according to different quality requirements;
4) adopting modified urea-formaldehyde glue is adhesive, above-mentioned adjustable cast iron planes bar is carried out gluing handle, and coating weight is 120~160g/m 2, the specification requirement of pressing sheet material then, the method that adopts flat assembly or side to piece together is spliced;
5) under 88 ± 2 ℃ of temperature, carry out hot pressing compression moulding, the main unit pressure 0.2~0.6Mpa that presses, side pressure unit pressure 5~7Mpa, at last 20~30 ℃ of temperature, health is 3~7 days under relative air humidity 20~50% conditions.
2, the production technology of a kind of anti-crack bamboo plate as claimed in claim 1, its feature is in step 2) in, 80~90 ℃ of bleaching temperatures, bleaching time 6~8 hours, 50~60 ℃ of bake out temperatures, relative air humidity 36~40%.
3, the production technology of a kind of anti-crack bamboo plate as claimed in claim 1 is characterized in that step 4), 5) in, the coating weight 120~150g/m of adhesive 2, main unit pressure 0.4~0.6Mpa, the side pressure unit pressure 5~6Mpa of pressing.
4, the production technology of a kind of anti-crack bamboo plate as claimed in claim 1, it is characterized in that the width of force plane bar is: 20-24mm, thickness is: 6.5-9mm.
5, the production technology of a kind of anti-crack bamboo plate as claimed in claim 1, it is characterized in that the width of adjustable cast iron planes bar is: 14.3-20.8mm, thickness is: 4-6.5mm.
6, the production technology of a kind of anti-crack bamboo plate as claimed in claim 1 is characterized in that: carbonization pressure is 0.18~0.2MPa, and carbonization time is 150-180 minutes.
CNB2006100520726A 2006-06-21 2006-06-21 A process for manufacturing anti-crack bamboo plate CN100496910C (en)

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CN100496910C true CN100496910C (en) 2009-06-10

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Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009030132A1 (en) * 2007-09-07 2009-03-12 Shanghai Yunsheng Bamboo And Wood Product Co., Ltd A jointless lengthened bamboo section material and a method thereof
CN100575019C (en) 2007-10-30 2009-12-30 杭州大庄地板有限公司 A kind of bamboo cord wood producing method
CN100572009C (en) * 2008-04-18 2009-12-23 杭州大庄地板有限公司 Bamboo recombination sectional material and manufacture method thereof
CN101992490A (en) * 2010-08-03 2011-03-30 中国林业科学研究院木材工业研究所 Artificial board composition and artificial board
CN101992491A (en) * 2010-08-03 2011-03-30 中国林业科学研究院木材工业研究所 Artificial board composition and artificial board
CN102407545A (en) * 2010-09-26 2012-04-11 王林林 Bamboo composite plate of honeycomb-shaped middle layer and preparation method thereof
CN104068694A (en) * 2013-03-25 2014-10-01 董婉君 Screen frame made from bamboo materials
CN104070585A (en) * 2014-06-11 2014-10-01 陈晓岗 Processing method for bamboo wood
CN105082271B (en) * 2015-08-26 2017-05-24 上海红晨木业有限公司 Manufacturing method for bamboo strip vertical environment-friendly composite board
CN107553671A (en) * 2017-09-08 2018-01-09 安徽至信竹业科技有限公司 A kind of method for improving bamboo flooring stability
CN108748452A (en) * 2018-06-07 2018-11-06 安徽宏润工艺品有限公司 A method of preparing water-fast weather-proof bamboo flooring with biochemical modified soybean albumen adhesive
CN108943234A (en) * 2018-06-28 2018-12-07 湖南冠艺竹业有限公司 The production technology of anti-crack bamboo furniture
CN110405872A (en) * 2019-06-28 2019-11-05 中南林业科技大学 A kind of quick hot-press molding method of integrated timber
CN110605771A (en) * 2019-07-31 2019-12-24 湖北绿知堂竹业股份有限公司 Production and processing method of bamboo furniture

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Address after: 311251, New River Town, Xiaoshan District, Zhejiang, Hangzhou

Patentee after: Zhejiang Dazhuang Industrial Group Co., Ltd.

Address before: Lin Pu Zhen you Che Qiao Xiaoshan District of Hangzhou City, Zhejiang province 311251

Patentee before: Hangzhou Dasso Floor Co., Ltd.

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Owner name: ZHEJIANG DAZHUANG INDUSTRY GROUP CO., LTD.

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