CN102514071A - Low glue consumption method for making medium density fiberboard - Google Patents
Low glue consumption method for making medium density fiberboard Download PDFInfo
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- CN102514071A CN102514071A CN2011103900380A CN201110390038A CN102514071A CN 102514071 A CN102514071 A CN 102514071A CN 2011103900380 A CN2011103900380 A CN 2011103900380A CN 201110390038 A CN201110390038 A CN 201110390038A CN 102514071 A CN102514071 A CN 102514071A
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Abstract
The invention relates to a low glue consumption method for making a medium density fiberboard, which comprises the following steps of: material preparation, i.e. processing the raw materials of small dimension wood, brush wood and the like into wood chips by adopting a drum chipper; fiber preparation, i.e. sending qualified wood chips to a wood chip cooking pot through a belt conveyor, introducing papermaking waste liquid into a boiler to carry out cooking softening treatment after filtering the papermaking waste liquid, sending the wood chips which are cooked and preheated into a thermofiner to carry out mechanical separation through a feeding screw, and filling molten wax before the wood chips enter a grinding chamber body of the thermofiner, so that after the wood chips are separated into the fibers, the wax is uniformly distributed on the surfaces of the fibers; sizing and drying of the fibers, wherein a production process of firstly sizing and then drying is adopted; pavement and formation of a board blank; hot-press forming, i.e. sending the single board blank into a hot press to carry out hot pressing through a loader, so that under the combined action of heat and pressure, moisture in the board blank is gasified and evaporated, the density of the board blank is improved, glue is cured and a waterproof agent is redistributed; and post-processing, i.e. finally, sending the obtained product into a sanding machine to carry out surface processing. The low glue consumption method for making the medium density fiberboard is simple and convenient.
Description
Technical field
The invention belongs to wood-based plate and make the field, specifically is a kind of medium density fiber board fabrication method of low resin added.
Background technology
Medium density fibre board (MDF) is one of important kind of wood-based plate, and its internal structure is even, and density is moderate, and dimensional stability is good, can be widely used in fields such as furniture and interior decoration.At present, medium density fibre board (MDF) production adopts urea-formaldehyde resin adhesive as adhesive, and producing 1 cubic metre of medium density fibre board (MDF) needs the 170kg urea-formaldehyde resin adhesive approximately, and the adhesive cost accounts for about 1/3rd of medium density fibre board (MDF) production cost.Simultaneously,, can discharge free formaldehyde in its manufacturing and the use, environment produced pollute because medium density fibre board (MDF) production has applied urea-formaldehyde resin adhesive.Therefore, the low resin added medium density fibre board (MDF) manufacturing technology of development reduces the medium density fibre board (MDF) production cost, and it is very necessary to reduce sheet material manufacturing and use free formaldehyde release.
Summary of the invention
The technical problem that the present invention solved is to provide a kind of medium density fiber board fabrication method of low resin added, to solve the shortcoming in the above-mentioned background technology.
The technical problem that the present invention solved adopts following technical scheme to realize:
A kind of low resin added medium density fiber board fabrication method is introduced chip steaming with papermaking wastewater heating vaporization back and is irritated, and utilizes the steam state papermaking wastewater that wood chip is carried out boiling.Because papermaking wastewater contains chemical compositions such as abundant lignin, hemicellulose, so chemical compositions such as a large amount of lignin, hemicellulose are contained on the wood-fibred surface of preparation.During hot pressing, lignin, hemicellulose can react the composition that generation can substitute the similar adhesive of urea-formaldehyde resin adhesive in a large number under heat effect.Under the prerequisite that guarantees the medium density fibre board (MDF) mechanical property, the urea-formaldehyde resin adhesive applied amount can reduce greatly.Compare with conventional manufacturing approach, this manufacturing approach can be practiced thrift 50% urea-formaldehyde resin adhesive, and 1 cubic metre of medium density fibre board (MDF) can reduce about 160 yuan of adhesive cost.Simultaneously, the reduction of resin added can significantly reduce the burst size of free formaldehyde in medium density fibre board (MDF) manufacturing and the use, and the medium density fibre board (MDF) of preparation has reached the E0 level.Therefore, compare with the medium density fibre board (MDF) that conventional method is produced, the medium density fibre board (MDF) of this method preparation has tangible cost advantage and environment-friendly advantage.
Concrete grammar is following:
1, gets the raw materials ready
Adopt drum chipper that raw material such as small dimension wood, brush wood are processed into specification for long: the wood chip of 16～30mm, wide: 15～30mm, thick: 3～6mm.Through the roller sieve wood chip is carried out purified treatment, remove defective wood chip and bark in the wood chip;
2, fiber production
Qualified wood chip is delivered to the chip steaming jar through belt conveyer.Papermaking wastewater is filtered the back introduce boiler, the preparation steam pressure is the 0.6-0.7MPa saturated vapor.Then saturated vapor is introduced into the chip steaming jar wood chip is carried out the softening processing of boiling, the temperature in the boiling cylinder is 160～175 ℃, and the processing time is 6-8min.Wood chip after the boiling preheating is sent into defibrator through feed auger and is carried out mechanical separation, the preparation wood-fibred.Wood chip before getting into the defibrator grinding chamber body is squeezed into melt paraffin, separate into fiber after, paraffin is in the fiber surface distribution uniform, the applied amount of paraffin is 1%;
3, applying glue to fibers and drying
Adopt production technology dry after the first applying glue, resin added is 6-7%; Adopt pipeline drying, dry back fiber moisture is 8～12%;
4, plate blank paving moulding
Adopt the vacuum pneumatic spreading machine that applying glue, dried wood-fibred are mated formation into certain thickness continuous slab band.The continuous slab band is separated into the monolithic slab of required specification through the edging saw with the briar saw again after the preformer precompressed is preliminary closely knit;
5, hot-forming
The monolithic slab is sent into hot press through loader and is carried out hot pressing; Slab is under the synergy of heat and pressure; Moisture gasification in the slab, evaporation, density increase, adhesive solidification, waterproofing agent redistribution; A series of physicochemical change take place in each component in the raw material, make and form various adhesions between fiber.Hot pressing temperature is 160～180 ℃, and hot pressing pressure is 2.5～3.0Mpa, and hot pressing time is every 1mm plate 20～25s.
6, post processing
From sheet material saw limit after the cooling of buck machine that press comes out, be sawn into the sheet material of standard breadth.Send into sander at last again and carry out surface treatment.
It is original about 50% to utilize medium density fibre board (MDF) resin added of the present invention to reduce to, and the lignin in the hot pressing in the papermaking wastewater, hemicellulose issue the adhesive component that is similar to that biochemical reaction generates in heat effect and make the medium density fibre board (MDF) glue molding and guarantee the sheet material mechanical property with the urea-formaldehyde resin adhesive acting in conjunction that applies.
Beneficial effect
The present invention has effectively utilized the waste liquid that paper-making process produces; Under the prerequisite that guarantees the sheet material mechanical property; Reduced the medium density fibre board (MDF) resin added; Thereby reduced the sheet material manufacturing cost, reduced burst size of methanal in medium density fibre board (MDF) manufacturing and the use, compared with conventional manufacturing approach and have tangible cost and environment-friendly advantage.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with concrete diagram, further set forth the present invention.
Embodiment 1
Concrete grammar is following:
1, gets the raw materials ready
Adopt drum chipper that raw material such as small dimension wood, brush wood are processed into specification for long: the wood chip of 16～30mm, wide: 15～30mm, thick: 3～6mm.Through the roller sieve wood chip is carried out purified treatment, remove defective wood chip and bark in the wood chip;
2, fiber production
Qualified wood chip is delivered to the chip steaming jar through belt conveyer.Papermaking wastewater is filtered the back introduce boiler, the preparation steam pressure is the 0.6MPa saturated vapor.Then saturated vapor is introduced into the chip steaming jar wood chip is carried out the softening processing of boiling, the temperature in the boiling cylinder is 160 ℃, and the processing time is 6min.Wood chip after the boiling preheating is sent into defibrator through feed auger and is carried out mechanical separation, the preparation wood-fibred.Wood chip before getting into the defibrator grinding chamber body is squeezed into melt paraffin, separate into fiber after, paraffin is in the fiber surface distribution uniform, the applied amount of paraffin is 1%;
3, applying glue to fibers and drying
Adopt production technology dry after the first applying glue, resin added is 7%; Adopt pipeline drying, dry back fiber moisture is 8～12%;
4, plate blank paving moulding
Adopt the vacuum pneumatic spreading machine that applying glue, dried wood-fibred are mated formation into certain thickness continuous slab band.The continuous slab band is separated into the monolithic slab of required specification through the edging saw with the briar saw again after the preformer precompressed is preliminary closely knit;
5, hot-forming
The monolithic slab is sent into hot press through loader and is carried out hot pressing; Slab is under the synergy of heat and pressure; Moisture gasification in the slab, evaporation, density increase, adhesive solidification, waterproofing agent redistribution; A series of physicochemical change take place in each component in the raw material, make and form various adhesions between fiber; Hot pressing temperature is 170 ℃, and hot pressing pressure is 2.5Mpa, and hot pressing time is every 1mm plate 20s.
6, post processing
From sheet material saw limit after the cooling of buck machine that press comes out, be sawn into the sheet material of standard breadth.Send into sander at last again and carry out surface treatment.
Embodiment 2
Concrete grammar is following:
1, gets the raw materials ready
Adopt drum chipper that raw material such as small dimension wood, brush wood are processed into specification for long: the wood chip of 16～30mm, wide: 15～30mm, thick: 3～6mm.Through the roller sieve wood chip is carried out purified treatment, remove defective wood chip and bark in the wood chip;
2, fiber production
Qualified wood chip is delivered to the chip steaming jar through belt conveyer.Papermaking wastewater is filtered the back introduce boiler, the preparation steam pressure is the 0.7MPa saturated vapor.Then saturated vapor is introduced into the chip steaming jar wood chip is carried out the softening processing of boiling, the temperature in the boiling cylinder is 175 ℃, and the processing time is 8min.Wood chip after the boiling preheating is sent into defibrator through feed auger and is carried out mechanical separation, the preparation wood-fibred.Wood chip before getting into the defibrator grinding chamber body is squeezed into melt paraffin, separate into fiber after, paraffin is in the fiber surface distribution uniform, the applied amount of paraffin is 1%;
3, applying glue to fibers and drying
Adopt production technology dry after the first applying glue, resin added is 6%; Adopt pipeline drying, dry back fiber moisture is 8～12%;
4, plate blank paving moulding
Adopt the vacuum pneumatic spreading machine that applying glue, dried wood-fibred are mated formation into certain thickness continuous slab band.The continuous slab band is separated into the monolithic slab of required specification through the edging saw with the briar saw again after the preformer precompressed is preliminary closely knit;
5, hot-forming
The monolithic slab is sent into hot press through loader and is carried out hot pressing; Slab is under the synergy of heat and pressure; Moisture gasification in the slab, evaporation, density increase, adhesive solidification, waterproofing agent redistribution; A series of physicochemical change take place in each component in the raw material, make and form various adhesions between fiber; Hot pressing temperature is 180 ℃, and hot pressing pressure is 3.0Mpa, and hot pressing time is every 1mm plate 25s.
6, post processing
From sheet material saw limit after the cooling of buck machine that press comes out, be sawn into the sheet material of standard breadth.Send into sander at last again and carry out surface treatment.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (1)
1. the medium density fiber board fabrication method of a low resin added is characterized in that, may further comprise the steps:
The first step: get the raw materials ready: adopt drum chipper that raw material such as small dimension wood, brush wood are processed into specification for long: the wood chip of 16～30mm, wide: 15～30mm, thick: 3～6mm; Through the roller sieve wood chip is carried out purified treatment, remove defective wood chip and bark in the wood chip;
Second step: fiber production: qualified wood chip is delivered to the chip steaming jar through belt conveyer; Papermaking wastewater is filtered the back introduce boiler, the preparation steam pressure is the 0.6-0.7MPa saturated vapor; Then saturated vapor is introduced into the chip steaming jar wood chip is carried out the softening processing of boiling, the temperature in the boiling cylinder is 160～175 ℃, and the processing time is 6-8min; Wood chip after the boiling preheating is sent into defibrator through feed auger and is carried out mechanical separation, the preparation wood-fibred; Wood chip before getting into the defibrator grinding chamber body is squeezed into melt paraffin, separate into fiber after, paraffin is in the fiber surface distribution uniform, the applied amount of paraffin is 1%;
The 3rd step: applying glue to fibers is with dry: adopt dry production technology after the first applying glue, resin added is 6-7%; Adopt pipeline drying, dry back fiber moisture is 8～12%;
The 4th step: plate blank paving moulding: adopt the vacuum pneumatic spreading machine that applying glue, dried wood-fibred are mated formation into certain thickness continuous slab band; The continuous slab band is separated into the monolithic slab of required specification through the edging saw with the briar saw again after the preformer precompressed is preliminary closely knit;
The 5th step: hot-forming: the monolithic slab is sent into hot press through loader and is carried out hot pressing; Slab is under the synergy of heat and pressure; Moisture gasification in the slab, evaporation, density increase, adhesive solidification, waterproofing agent redistribution; A series of physicochemical change take place in each component in the raw material, make and form various adhesions between fiber; Hot pressing temperature is 160～180 ℃, and hot pressing pressure is 2.5～3.0Mpa, and hot pressing time is every 1mm plate 20～25s;
The 6th step: post processing: from sheet material saw limit after the cooling of buck machine that press comes out, be sawn into the sheet material of standard breadth, send into sander at last again and carry out surface treatment.
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| CN2011103900380A CN102514071A (en) | 2011-11-30 | 2011-11-30 | Low glue consumption method for making medium density fiberboard |
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| CN2011103900380A CN102514071A (en) | 2011-11-30 | 2011-11-30 | Low glue consumption method for making medium density fiberboard |
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Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794809A (en) * | 2012-07-18 | 2012-11-28 | 广西华峰林业股份有限公司 | Production technology of environment-friendly medium-density fiberboard |
| CN103112073A (en) * | 2013-03-04 | 2013-05-22 | 云南玉加宝人造板有限公司 | Fiber plate and manufacture method thereof |
| CN103406969A (en) * | 2013-07-16 | 2013-11-27 | 福建农林大学 | Banana stalk medium-density fiber board and manufacturing method thereof |
| CN103934878A (en) * | 2014-05-07 | 2014-07-23 | 攀枝花钢城集团印刷广告有限公司 | Medium density fiberboard and manufacturing method and purpose thereof |
| CN104029273A (en) * | 2014-05-29 | 2014-09-10 | 泗县林星板业有限责任公司 | Method and device for producing compressed plates with medium and high density |
| CN105522638A (en) * | 2015-11-27 | 2016-04-27 | 于金峰 | Method for manufacturing environment-friendly waterproof fiber board |
| CN105666632A (en) * | 2016-01-25 | 2016-06-15 | 新沂市大自然木业有限公司 | Manufacturing method for environment-friendly corrosion prevention medium-density fiberboard for door plate of security door |
| CN105690538A (en) * | 2016-01-25 | 2016-06-22 | 新沂市大自然木业有限公司 | Manufacturing method for environment-friendly inflaming retarding medium density fiberboard for laminate wood flooring |
| CN106182326A (en) * | 2016-08-23 | 2016-12-07 | 辽宁蓝亿实业有限公司 | A kind of light burnt powder makees the environment-friendly type medium-density plate of inserts |
| CN106363764A (en) * | 2016-08-27 | 2017-02-01 | 苏州雅晟建筑装饰工程有限公司 | Preparing method of waterproof fiberboard |
| CN106493823A (en) * | 2016-11-15 | 2017-03-15 | 苍南宇诺新材料科技有限公司 | Modern fibre plate processing method |
| CN106914968A (en) * | 2015-12-24 | 2017-07-04 | 池州忠大木业有限公司 | A kind of preparation method of fiberboard |
| CN109517579A (en) * | 2018-11-22 | 2019-03-26 | 丰禾新材（北京）技术有限公司 | Adhesive and fiberboard preparation method |
| CN109624015A (en) * | 2018-12-29 | 2019-04-16 | 上海昶法新材料有限公司 | A kind of environment-friendly type density board and preparation method thereof of papermaking waste production |
| CN110421670A (en) * | 2019-07-16 | 2019-11-08 | 阳春市威利邦木业有限公司 | A kind of manufacturing equipment of damp-proof environment-protection MDF fiberboard |
| CN110893638A (en) * | 2018-09-12 | 2020-03-20 | 上海昶法新材料有限公司 | Environment-friendly density board and manufacturing method thereof |
| CN111203953A (en) * | 2020-01-07 | 2020-05-29 | 怀集宜美木业有限公司 | Environment-friendly flame-retardant medium-density fiberboard |
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| CN112342807A (en) * | 2020-11-20 | 2021-02-09 | 江苏健坤木业有限公司 | Method for preparing fiberboard |
| CN112976218A (en) * | 2021-02-27 | 2021-06-18 | 田宁刚 | Manufacturing method of medium density fiberboard |
| CN113601648A (en) * | 2020-08-03 | 2021-11-05 | 巴洛克木业(中山)有限公司 | Aldehyde-free base material and production process of reinforced floor |
| CN113601661A (en) * | 2021-07-02 | 2021-11-05 | 福建省永安林业(集团)股份有限公司 | Manufacturing method of high-density and high-strength plant fiber board |
| CN116061285A (en) * | 2022-12-06 | 2023-05-05 | 佳诺威集团股份有限公司 | Technological method for producing fiberboard by utilizing recycled battens |
-
2011
- 2011-11-30 CN CN2011103900380A patent/CN102514071A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102794809A (en) * | 2012-07-18 | 2012-11-28 | 广西华峰林业股份有限公司 | Production technology of environment-friendly medium-density fiberboard |
| CN103112073A (en) * | 2013-03-04 | 2013-05-22 | 云南玉加宝人造板有限公司 | Fiber plate and manufacture method thereof |
| CN103112073B (en) * | 2013-03-04 | 2015-10-07 | 云南玉加宝人造板有限公司 | A kind of fiberboard and production method thereof |
| CN103406969A (en) * | 2013-07-16 | 2013-11-27 | 福建农林大学 | Banana stalk medium-density fiber board and manufacturing method thereof |
| CN103406969B (en) * | 2013-07-16 | 2015-02-04 | 福建农林大学 | Banana stalk medium-density fiber board and manufacturing method thereof |
| CN103934878A (en) * | 2014-05-07 | 2014-07-23 | 攀枝花钢城集团印刷广告有限公司 | Medium density fiberboard and manufacturing method and purpose thereof |
| CN103934878B (en) * | 2014-05-07 | 2016-05-11 | 攀枝花钢城集团印刷广告有限公司 | Medium density fibre board (MDF) and manufacture method thereof and purposes |
| CN104029273A (en) * | 2014-05-29 | 2014-09-10 | 泗县林星板业有限责任公司 | Method and device for producing compressed plates with medium and high density |
| CN105522638A (en) * | 2015-11-27 | 2016-04-27 | 于金峰 | Method for manufacturing environment-friendly waterproof fiber board |
| CN106914968A (en) * | 2015-12-24 | 2017-07-04 | 池州忠大木业有限公司 | A kind of preparation method of fiberboard |
| CN105690538A (en) * | 2016-01-25 | 2016-06-22 | 新沂市大自然木业有限公司 | Manufacturing method for environment-friendly inflaming retarding medium density fiberboard for laminate wood flooring |
| CN105666632A (en) * | 2016-01-25 | 2016-06-15 | 新沂市大自然木业有限公司 | Manufacturing method for environment-friendly corrosion prevention medium-density fiberboard for door plate of security door |
| CN105666632B (en) * | 2016-01-25 | 2018-01-19 | 新沂市大自然木业有限公司 | A kind of manufacture method of antitheft door door-plate environment friendly corrosion protection medium density fibre board (MDF) |
| CN105690538B (en) * | 2016-01-25 | 2018-01-19 | 新沂市大自然木业有限公司 | A kind of manufacture method of laminated flooring environmental protection flame retardant medium density fibre board (MDF) |
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| CN106493823A (en) * | 2016-11-15 | 2017-03-15 | 苍南宇诺新材料科技有限公司 | Modern fibre plate processing method |
| CN110893638A (en) * | 2018-09-12 | 2020-03-20 | 上海昶法新材料有限公司 | Environment-friendly density board and manufacturing method thereof |
| CN109517579A (en) * | 2018-11-22 | 2019-03-26 | 丰禾新材（北京）技术有限公司 | Adhesive and fiberboard preparation method |
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| CN111203953A (en) * | 2020-01-07 | 2020-05-29 | 怀集宜美木业有限公司 | Environment-friendly flame-retardant medium-density fiberboard |
| CN113601648A (en) * | 2020-08-03 | 2021-11-05 | 巴洛克木业(中山)有限公司 | Aldehyde-free base material and production process of reinforced floor |
| CN113601648B (en) * | 2020-08-03 | 2022-09-23 | 巴洛克木业(中山)有限公司 | Aldehyde-free base material and production process of reinforced floor |
| CN111958747A (en) * | 2020-08-19 | 2020-11-20 | 陈乃峰 | Manufacturing process of panel and bottom plate of seven-stringed plucked instrument |
| CN112342807A (en) * | 2020-11-20 | 2021-02-09 | 江苏健坤木业有限公司 | Method for preparing fiberboard |
| CN112976218A (en) * | 2021-02-27 | 2021-06-18 | 田宁刚 | Manufacturing method of medium density fiberboard |
| CN113601661A (en) * | 2021-07-02 | 2021-11-05 | 福建省永安林业(集团)股份有限公司 | Manufacturing method of high-density and high-strength plant fiber board |
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Application publication date: 20120627 |