CN1962214A - Aldehyde-free gum tragasol fast-growing poplar II veneer industrialized production method - Google Patents
Aldehyde-free gum tragasol fast-growing poplar II veneer industrialized production method Download PDFInfo
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- CN1962214A CN1962214A CN 200610097957 CN200610097957A CN1962214A CN 1962214 A CN1962214 A CN 1962214A CN 200610097957 CN200610097957 CN 200610097957 CN 200610097957 A CN200610097957 A CN 200610097957A CN 1962214 A CN1962214 A CN 1962214A
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Abstract
The invention relates to a method for producing aldehydes-free soybean paste II-type glued board, wherein it comprises cutting Salicaceae, removing skin, cutting rotationally; drying, shearing and repairing; coating the surface and core plates; coating single plate and opening and aging; then assembling and thermally compressing; cooling and stacking, releasing stress, to realize high water content. The invention has the advantages that: (1), when coating, each surface of single plate is coated; (2), it uses opening aging and thermal compression to reduce the water content to 16-20%; (3), it has high thermal compression temperature and pressure. The inventive product can reach national II-type glued board standard, while its glued strengthen is higher than 0.70MPa, and its formaldehyde release is lower than 0.1mg/L.
Description
Technical field
What the present invention relates to is a kind of preparation method of aldehyde-free gum speed business poplar II class glued board, belongs to wood-based plate and makes the field.
Background technology
At present, China's quick growth poplar wood has been widely used in plywood production, and the overwhelming majority adopts the three-aldehyde glue stick.Utilize the gluing manufacturing quick growth poplar wood of the single bean gum of no aldehyde II class glued board almost blank.The beans base timber adhesive, its research history is morning, and 40～sixties of 20th century, U.S.West Coast almost each glued board producer all adopts the rubber made from soybean cake stick, and the rubber made from soybean cake stick has captured more than 85% of U.S.'s glued board glue consumption, and is in fashion for a time.But to the seventies in 20th century, protein-based wood adhesive disappears down from its summit state.This is because a large amount of appearance of synthetic resin wood adhesive make soybean albumen adhesive show inferior position on indexs such as resistance to water, glue-joint strength.Wood processing industry has entered the epoch of adhesive made of synthetic resin, and from then on " three aldehyde " glue occupied the world of wood adhesive, up to the oil crisis appearance nineties in 20th century and the awakening of human environmental consciousness.At present, abroad attach great importance to the soybean prod is the research that primary raw material prepares formaldehydeless wood adhesive, soybean prod (soy meal or soy protein isolate) is carried out sex change and chemical modification, attempt to give the performance of this natural polymer synthetic resin of soybean protein, and directly be used as wood adhesive.
Summary of the invention
But the aldehyde-free gum speed business poplar II class Manufacturing Technology of Plywood that the purpose of this invention is to provide a kind of suitability for industrialized production.Make full use of the higher and lower characteristics of solid content of aldehyde-free gum viscosity.
Technical solution of the present invention: the suitability for industrialized production manufacture method of aldehyde-free gum speed business poplar II class glued board, its processing step branch
(1) veneer manufacturing, (two) veneer drying and repairing, (three) gluing, (four) ageing, assembly and precompressed, (five) hot pressing, (six) post-processed;
Described processing step (one) comprises that poplar is sawed-off, peeling and rotary-cut.At first that poplar is sawed-off with chain saw, adopt artificial or mechanical method that its bark is peelled off then, send into peeler again it is peeled into the veneer that thickness is 1.0-2.0mm;
Described processing step (two) comprise veneer drying, cut out and repair.At first veneer is sent into and carried out drying in the mesh-belt drier, baking temperature is 110-130 ℃, and dried veneer moisture content is 6-10%; Then dried veneer cut out, removed defective as far as possible, and mend by replacing a damaged part, repair and splice;
Described processing step (three) comprises dash board and central layer gluing, executes bean gum amount 180-200g/m
2(single face), gluing is all wanted on the veneer surface that each glue-line is related to;
Processing step (four) carries out the opening ageing with the veneer behind the gluing, assembly and hot precompressed then, its 80-100 ℃ of hot precompressed temperature, pressure 0.2-0.4MPa;
Described processing step (five) hot pressing temperature is 150-170 ℃, pressure 1.2-1.4MPa;
Described processing step (six) post-processed comprises cooling, stacks, and makes its stress release, reaches balancing water content.
The aldehyde-free gum speed business poplar plywood character that produces reaches national II class glued board standard, bonding strength 〉=0.70MPa, and burst size of methanal≤0.1mg/L is near zero.
Advantage of the present invention:
The difference of technology of the present invention and glued board common process maximum is the higher and lower characteristics of solid content at aldehyde-free gum viscosity, and when gluing, gluing is all wanted on the veneer surface that each glue-line relates to (1); (2) adopt the method for opening ageing and hot precompressed to make mat moisture content be reduced to 16-20%; (3) temperature and pressure of hot pressing is higher.
The specific embodiment
Embodiment 1, industrial production aldehyde-free gum speed business poplar II class glued board method, its processing step (one) is at first sawed-off with chain saw with poplar, adopts artificial or mechanical method that its bark is peelled off then, sends into peeler (model BQ) again it is peeled into the veneer that thickness is 1.0mm;
Processing step (two) will be peeled into certain thickness veneer and send into and carry out drying in the mesh-belt drier, and baking temperature is 110 ℃, and dried veneer moisture content is 6%; Then dried veneer is cut out, the veneer of band defective is mended by replacing a damaged part or repaired, splices and deletes.
Processing step (three) comprises dash board and central layer gluing through cutting out, mend by replacing a damaged part or repairing, spliced veneer to it with above-mentioned, and sizing applicator (model BS) is executed bean gum amount 180g/m
2(single face), gluing is all wanted on the veneer surface that each glue-line is related to;
Processing step (four) carries out the opening ageing with the veneer behind the gluing, assembly and hot precompressed then, its 80 ℃ of hot precompressed temperature, pressure 0.2MPa;
Processing step (five) carries out hot pressing with above-mentioned veneer after opening ageing, assembly and hot precompressed, and its hot pressing temperature is 150 ℃, pressure 1.4MPa;
Processing step (six) post-processed comprises cooling, stacks, and makes its stress release, reaches balancing water content.
Embodiment 2
Industrial production aldehyde-free gum speed business poplar II class glued board method, its processing step (one) is at first sawed-off with chain saw with poplar, adopt artificial or mechanical method that its bark is peelled off then, send into peeler (model BQ) again it is peeled into the veneer that thickness is 1.5mm;
Processing step (two) will be peeled into certain thickness veneer and send into and carry out drying in the mesh-belt drier, and baking temperature is 115 ℃, and dried veneer moisture content is 8%; Then dried veneer is cut out, the veneer of band defective is mended by replacing a damaged part or repaired, splices and deletes.
Processing step (three) comprises dash board and central layer gluing through cutting out, mend by replacing a damaged part or repairing, spliced veneer to it with above-mentioned, and sizing applicator (model BS) is executed bean gum amount 190g/m
2(single face), gluing is all wanted on the veneer surface that each glue-line is related to;
Processing step (four) carries out the opening ageing with the veneer behind the gluing, assembly and hot precompressed then, its 90 ℃ of hot precompressed temperature, pressure 0.3MPa;
Processing step (five) carries out hot pressing with above-mentioned veneer after opening ageing, assembly and hot precompressed, and its hot pressing temperature is 160 ℃, pressure 1.3MPa;
Processing step (six) post-processed comprises cooling, stacks, and makes its stress release, reaches balancing water content.
Embodiment 3
Industrial production aldehyde-free gum speed business poplar II class glued board method, its processing step (one) is at first sawed-off with chain saw with poplar, adopt artificial or mechanical method that its bark is peelled off then, send into peeler (model BS) again it is peeled into the veneer that thickness is 2mm;
Processing step (two) will be peeled into certain thickness veneer and send into and carry out drying in the mesh-belt drier, and baking temperature is 130 ℃, and dried veneer moisture content is 10%; Then dried veneer is cut out, the veneer of band defective is mended by replacing a damaged part or repaired, splices and deletes.
Processing step (three) comprises dash board and central layer gluing through cutting out, mend by replacing a damaged part or repairing, spliced veneer to it with above-mentioned, and sizing applicator (model BS) is executed bean gum amount 200g/m
2(single face), gluing is all wanted on the veneer surface that each glue-line is related to;
Processing step (four) carries out the opening ageing with the veneer behind the gluing, assembly and hot precompressed then, its 100 ℃ of hot precompressed temperature, pressure 0.4MPa;
Processing step (five) carries out hot pressing with above-mentioned veneer after opening ageing, assembly and hot precompressed, and its hot pressing temperature is 170 ℃, pressure 1.2MPa;
Processing step (six) post-processed comprises cooling, stacks, and makes its stress release, reaches balancing water content.
The aldehyde-free gum speed business poplar plywood character that the foregoing description produces reaches national II class glued board standard, bonding strength 〉=0.70MPa, and burst size of methanal≤0.1mg/L is near zero.
Claims (1)
1, the manufacturing of suitability for industrialized production manufacturing approach craft step branch (two) veneer, (two) veneer drying and repairing, (three) gluing, (four) ageing, assembly and precompressed, (five) hot pressing, (six) post-processed of aldehyde-free gum speed business poplar II class glued board;
Described processing step (one) comprises that poplar is sawed-off, peeling and rotary-cut, and is at first that poplar is sawed-off with chain saw, adopts artificial or mechanical method that its bark is peelled off then, sends into peeler again it is peeled into the veneer that thickness is 1.0-2.0mm;
Described processing step (two) comprise veneer drying, cut out and repair, and at first veneer sent into and carried out drying in the mesh-belt drier, and baking temperature is 110-130 ℃, and dried veneer moisture content is 6-10%; Then dried veneer is cut out, mends by replacing a damaged part, repaired and splice or deletes;
Described processing step (three) comprises dash board and central layer gluing, executes bean gum amount 180-200g/m
2(single face), gluing is all wanted on the veneer surface that each glue-line is related to;
Processing step (four) carries out the opening ageing with the veneer behind the gluing, assembly and hot precompressed then, its 80-100 ℃ of hot precompressed temperature, pressure 0.2-0.4MPa;
Described processing step (five) is to through the opening ageing, and the veneer after assembly and the hot precompressed carries out hot pressing then, and its hot pressing temperature is 150-170 ℃, pressure 1.2-1.4MPa;
Described processing step (six) post-processed comprises cooling, stacks, and makes its stress release, reaches balancing water content.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200610097957 CN1962214A (en) | 2006-11-23 | 2006-11-23 | Aldehyde-free gum tragasol fast-growing poplar II veneer industrialized production method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200610097957 CN1962214A (en) | 2006-11-23 | 2006-11-23 | Aldehyde-free gum tragasol fast-growing poplar II veneer industrialized production method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913172A (en) * | 2010-07-29 | 2010-12-15 | 南京林业大学 | Method for improving performances of bean gum-poplar plywood by utilizing micro/nano-fibrils |
| CN102139501A (en) * | 2010-12-24 | 2011-08-03 | 南京林业大学 | Method for performing high-frequency prepressing treatment on formaldehyde-free soybean glue environment-friendly type China fir floor base material |
| CN102350716A (en) * | 2011-09-30 | 2012-02-15 | 南京林业大学 | Combined type drying method suitable for industrial production of fast growing poplar aldehyde-free veneer |
| CN105799010A (en) * | 2016-05-06 | 2016-07-27 | 孙小力 | Process method for producing zero-formaldehyde high-grade core-board through soybean albumin glue |
| CN108081403A (en) * | 2016-11-23 | 2018-05-29 | 徐州家邦家具有限公司 | A kind of furniture plywood production technology |
| CN108356926A (en) * | 2018-02-11 | 2018-08-03 | 广西艾尚嘉家居有限公司 | A kind of production method of bamboo three-ply board |
| CN110154194A (en) * | 2019-06-03 | 2019-08-23 | 江苏七巧工艺木制品股份有限公司 | Without the fire-retardant timber manufacturing method of urea formaldehyde dipping decorative paper veneer MULTILAYER COMPOSITE |
| CN112497374A (en) * | 2020-11-28 | 2021-03-16 | 无锡市森泰木制品有限公司 | Preparation method of environment-friendly antibacterial solid wood floor |
| CN113021537A (en) * | 2021-03-23 | 2021-06-25 | 南京林业大学 | Production process of wood-based paper plywood |
-
2006
- 2006-11-23 CN CN 200610097957 patent/CN1962214A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913172A (en) * | 2010-07-29 | 2010-12-15 | 南京林业大学 | Method for improving performances of bean gum-poplar plywood by utilizing micro/nano-fibrils |
| CN102139501A (en) * | 2010-12-24 | 2011-08-03 | 南京林业大学 | Method for performing high-frequency prepressing treatment on formaldehyde-free soybean glue environment-friendly type China fir floor base material |
| CN102350716A (en) * | 2011-09-30 | 2012-02-15 | 南京林业大学 | Combined type drying method suitable for industrial production of fast growing poplar aldehyde-free veneer |
| CN105799010A (en) * | 2016-05-06 | 2016-07-27 | 孙小力 | Process method for producing zero-formaldehyde high-grade core-board through soybean albumin glue |
| CN108081403A (en) * | 2016-11-23 | 2018-05-29 | 徐州家邦家具有限公司 | A kind of furniture plywood production technology |
| CN108356926A (en) * | 2018-02-11 | 2018-08-03 | 广西艾尚嘉家居有限公司 | A kind of production method of bamboo three-ply board |
| CN110154194A (en) * | 2019-06-03 | 2019-08-23 | 江苏七巧工艺木制品股份有限公司 | Without the fire-retardant timber manufacturing method of urea formaldehyde dipping decorative paper veneer MULTILAYER COMPOSITE |
| CN112497374A (en) * | 2020-11-28 | 2021-03-16 | 无锡市森泰木制品有限公司 | Preparation method of environment-friendly antibacterial solid wood floor |
| CN113021537A (en) * | 2021-03-23 | 2021-06-25 | 南京林业大学 | Production process of wood-based paper plywood |
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Open date: 20070516 |