CN101327609B - Method for producing ultra-long bamboo wood composite section bar - Google Patents
Method for producing ultra-long bamboo wood composite section bar Download PDFInfo
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- CN101327609B CN101327609B CN2007100696889A CN200710069688A CN101327609B CN 101327609 B CN101327609 B CN 101327609B CN 2007100696889 A CN2007100696889 A CN 2007100696889A CN 200710069688 A CN200710069688 A CN 200710069688A CN 101327609 B CN101327609 B CN 101327609B
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Abstract
The present invention discloses a production method of an ultra-long bamboo-wood composite sectional material. Mostly, the length of the prior bamboo veneer is less than three meters and therefore cannot satisfy the requirements of certain exceptional cases. According to the length of the sectional material plus finishing allowance, the production method cuts an ultra-long bamboo section, which is then ripped into sawali strips; bamboo green and bamboo rib skin are removed; after undergoing degreasing, rolling and drying, glue bathing and aging, the sawali strips are loaded into a mould to be pressed. The production method is characterized in that before the sawali strips are loaded into the mould, the quantity and the water ratio of the sawali strips are determined, the material is prepressed before receiving mould pressing, the sawali strips are evenly and symmetrically arranged in the mould, and pore spaces among the sawali strips are filled with short bamboo filaments and wood chips. While reducing the density of bamboo material, the production method does not degrade the owned properties of the bamboo material. The production method, which is widely applicable to certain exceptional cases, can produce a bamboo-wood composite sectional material which is more than four meters long.
Description
Technical field
The present invention relates to wood-like sheet for building, specifically a kind of manufacture method of ultra-long bamboo wood composite section bar.
Background technology
Along with the development of bamboo plywood industry, bamboo plywood has been widely used in the building template of some bridges, skyscraper, and bamboo curtain, bamboo floor, summer sleeping bamboo mat etc. have also been used in home decoration.Having now becomes the method for bamboo plywood a lot of to bamboo processing, the bamboo plywood length that it obtains is mostly below 3 meters, and house crossbeam, boat deck, park wayside pavilion, little wooden bridge etc. need be used more than the diameter 12cm, the timber of length more than 4 meters, and the bamboo plywood that existing method obtains can't satisfy the above-mentioned market demand.
Summary of the invention
Technical problem to be solved by this invention provides a kind of manufacture method of ultra-long bamboo wood composite section bar, it can produce length at the bamboo-wood composite section bar more than 4 meters, to be applied in house crossbeam, boat deck, park wayside pavilion, railway carriage, the furniture, meet the need of market.
For this reason, the technical solution used in the present invention is as follows: the manufacture method of ultra-long bamboo wood composite section bar, add allowance intercepting overlength bamboo section according to profile length, radially be split into the thin bamboo strips used for weaving bar, remove surf green, the bamboo ribs clothing, through degreasing, roll drying, drench glue, pack into after the ageing and carry out mold pressing in the mould, it is characterized in that before the thin bamboo strips used for weaving bar enters mould it being carried out quantitatively, decide the control of moisture content, before the mold pressing raw material has been carried out precompressed, described thin bamboo strips used for weaving bar is arranged in mould symmetrically, to reduce each side's opposite sex of bamboo wood as far as possible, the hole short bamboo filament that forms between the thin bamboo strips used for weaving bar, wood chip is filled up, accomplish that length is reasonable, collocation is used, and has also guaranteed the intensity between the thin bamboo strips used for weaving bar.Density reaches 1.05 left and right sides g/cm as enhanced type bamboo wood density after the air dry of general high-quality bamboo wood about 0.6g/cm3
3, high pressure (about 100Mpa) makes the own performance of bamboo wood obtain destroying, and has wasted raw material, has increased cost.The present invention carries out quantitatively, decides the control of moisture content emphatically to raw material, and adopts precompressed before the bamboo material progressive die, can adopt mesolow power to carry out mold pressing like this, in the density that reduces bamboo wood, does not but destroy the own performance of bamboo wood.
The manufacture method of described ultra-long bamboo wood composite section bar, thin bamboo strips used for weaving bar are unit with the bundle, and adjacent thin bamboo strips used for weaving bar bundle cephalocaudal direction is inverted, and promptly a branch of base portion is on the right side, and then another bundle base portion guarantees that on a left side thin bamboo strips used for weaving bar lay in mould is even.Certainly, the thin bamboo strips used for weaving bar also can be tied and be unit.
The manufacture method of described ultra-long bamboo wood composite section bar, adopt during mold pressing cold pressing, the heat cure mode, pressure is 10-50Mpa, temperature is 100-150 ℃, the time is 10-20 hour.The easy mold damage of hypertonia also can make slab deformation, and hypotony makes slab density little.The density of the section bar that the present invention obtains is at 0.85-1.05g/cm
3
The manufacture method of described ultra-long bamboo wood composite section bar, the moisture content that enters the thin bamboo strips used for weaving bar in the mould is controlled at 18-25%, is 1.05-1.1g/cm by density
3Carry out quantitatively.
After the slab demoulding that the manufacture method of described ultra-long bamboo wood composite section bar, mold pressing obtain, normal temperature place 1 week above can sawing, sanding.
The manufacture method of described ultra-long bamboo wood composite section bar, used glue are water-fast glue, and this water-fast glue is selected phenol-formaldehyde resin modified, modified cyanurotriamide glue or soluble polyurethane for use.
The present invention to raw material progressive die before carries out quantitatively, decides the control of moisture content emphatically, and adopted precompressed before mold pressing, has following beneficial effect: 1) when reducing bamboo wood density, but do not destroy the own performance of bamboo wood; 2) the thin bamboo strips used for weaving bar is arranged in mould symmetrically, has reduced each side's opposite sex of bamboo wood; 3) can produce length at the bamboo-wood composite section bar more than 4 meters, can be widely used in house crossbeam, boat deck, park wayside pavilion, railway carriage, the furniture.
The present invention is further illustrated below in conjunction with embodiment, but the present invention is not limited to these embodiment.
The specific embodiment
The manufacture process of overlength (length specification of section bar is 5 meters) bamboo-wood composite section bar is as follows:
Raw material is handled: intercept 5.2 meters long overlength bamboo section, radially be split into the thin bamboo strips used for weaving bar, remove surf green, bamboo ribs clothing.
Degreasing, roll drying, drench glue, ageing: degreasing (being heat treatment) is that softening ungrease treatment is to reach purpose softening, anticorrosion, mildew-resistant with the water logging of industrial chemicals high temperature; Rolling is the base sheet that raw material is pressed into the inequal cleavage seam, and its thickness is 0.3-0.4cm, and width is 1.7-2.0cm, and drying makes the moisture content of thin bamboo strips used for weaving bar be controlled at 8-12%; Sizing material adopts resin modified phenol resin, and the solids content when it drenches glue is 30-32%, and impregnation resin content is 20-22%, and steel slab surface adopts impregnation; Ageing is meant places a period of time to the raw material after the gluing, makes glue more even in material.
The dress mould: the thin bamboo strips used for weaving bar that enters in the mould is unit with the bundle, and its moisture content is controlled at 18-25%, is 1.05-1.1g/cm by density
3Carry out quantitatively before the mold pressing raw material having been carried out precompressed, reduce the density of bamboo wood.Described thin bamboo strips used for weaving bar bundle is arranged in mould symmetrically, and promptly adjacent thin bamboo strips used for weaving bar bundle cephalocaudal direction is inverted, and a branch of base portion is on the right side, and then another bundle base portion guarantees that on a left side thin bamboo strips used for weaving bar lay in mould is even, and the hole that forms between the thin bamboo strips used for weaving bar is filled up with short bamboo filament, wood chip.
Mold pressing: with press to slab cold pressing, heat cure, pressure is 10-50Mpa, temperature is 100-150 ℃, time: 10-20 hour, adjusts corresponding technological parameter according to different actual needs.After the slab demoulding that mold pressing obtains, normal temperature place 1 week above can sawing, sanding.
Claims (5)
1. the manufacture method of bamboo-wood composite section bar, add the bamboo section of allowance intercepting more than 4 meters according to profile length, radially be split into the thin bamboo strips used for weaving bar, remove surf green, bamboo clothing, through degreasing, roll drying, drench glue, carry out mold pressing in the mould of packing into after the ageing, it is characterized in that before the thin bamboo strips used for weaving bar enters mould it being carried out quantitatively, decide the control of moisture content, mold pressing is preceding has carried out precompressed to raw material, described thin bamboo strips used for weaving bar is arranged in mould symmetrically, and the hole that forms between the thin bamboo strips used for weaving bar is filled up with short bamboo filament, wood chip; The moisture content that enters the thin bamboo strips used for weaving bar in the mould is controlled at 18-25%, is 1.05-1.1g/cm by density
3Carry out quantitatively.
2. the manufacture method of bamboo-wood composite section bar according to claim 1 is characterized in that described thin bamboo strips used for weaving bar is unit with the bundle, and adjacent thin bamboo strips used for weaving bar bundle cephalocaudal direction is inverted, and promptly a branch of base portion is on the right side, and then another bundle base portion is on a left side.
3. the manufacture method of bamboo-wood composite section bar according to claim 1 and 2, adopt when it is characterized in that mold pressing cold pressing, the heat cure mode, pressure is 10-50Mpa, temperature is 100-150 ℃, the time is 10-20 hour.
4. the manufacture method of bamboo-wood composite section bar according to claim 3, it is characterized in that the slab demoulding that mold pressing obtains after, normal temperature place 1 week above can sawing, sanding.
5. the manufacture method of bamboo-wood composite section bar according to claim 4 is characterized in that used glue is water-fast glue, and this water-fast glue is selected phenol-formaldehyde resin modified, modified cyanurotriamide glue or soluble polyurethane for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100696889A CN101327609B (en) | 2007-06-22 | 2007-06-22 | Method for producing ultra-long bamboo wood composite section bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100696889A CN101327609B (en) | 2007-06-22 | 2007-06-22 | Method for producing ultra-long bamboo wood composite section bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101327609A CN101327609A (en) | 2008-12-24 |
| CN101327609B true CN101327609B (en) | 2011-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100696889A Expired - Fee Related CN101327609B (en) | 2007-06-22 | 2007-06-22 | Method for producing ultra-long bamboo wood composite section bar |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101863065B (en) * | 2009-04-14 | 2014-11-05 | 上海缘竹实业有限公司 | Process for manufacturing large-breadth plates by using all-bamboo modified material |
| CN101708618B (en) * | 2009-09-17 | 2011-06-29 | 周东华 | Method for processing bamboo sectional material |
| CN102658571A (en) * | 2012-05-21 | 2012-09-12 | 福建省永林竹业有限公司 | Cold-pressing production method for recombined bamboo materials |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2071126U (en) * | 1989-10-24 | 1991-02-13 | 刘鸿亮 | Bamboo plastics pressure moulding case |
| CN2557304Y (en) * | 2002-04-02 | 2003-06-25 | 诸暨市光裕竹业有限公司 | Bamboo strip floor |
| AU2003200943A1 (en) * | 2002-03-14 | 2003-10-02 | Shale Gordon | Reinforcing Methods |
| CN1463837A (en) * | 2002-06-13 | 2003-12-31 | 郎妙金 | Process for manufacturing base plate using small caliber bamboo wood |
| CN1883904A (en) * | 2006-05-24 | 2006-12-27 | 国际竹藤网络中心 | Method for producing float laminated blank assembly of bamboo strand lamination |
| CN1944011A (en) * | 2006-10-25 | 2007-04-11 | 赵斌 | Method for producing bamboo plate material of bamboo strip longitudinal layered side vertical pressed |
-
2007
- 2007-06-22 CN CN2007100696889A patent/CN101327609B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2071126U (en) * | 1989-10-24 | 1991-02-13 | 刘鸿亮 | Bamboo plastics pressure moulding case |
| AU2003200943A1 (en) * | 2002-03-14 | 2003-10-02 | Shale Gordon | Reinforcing Methods |
| CN2557304Y (en) * | 2002-04-02 | 2003-06-25 | 诸暨市光裕竹业有限公司 | Bamboo strip floor |
| CN1463837A (en) * | 2002-06-13 | 2003-12-31 | 郎妙金 | Process for manufacturing base plate using small caliber bamboo wood |
| CN1883904A (en) * | 2006-05-24 | 2006-12-27 | 国际竹藤网络中心 | Method for producing float laminated blank assembly of bamboo strand lamination |
| CN1944011A (en) * | 2006-10-25 | 2007-04-11 | 赵斌 | Method for producing bamboo plate material of bamboo strip longitudinal layered side vertical pressed |
Non-Patent Citations (2)
| Title |
|---|
| 叶忠华.径向竹篾积成水泥模板的研制.中小企业科技 11.2002,(11),23,24. |
| 叶忠华.径向竹篾积成水泥模板的研制.中小企业科技 11.2002,(11),23,24. * |
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| CN101327609A (en) | 2008-12-24 |
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