CN107553684A - A kind of production method of no aldehyde adhesive floor base material - Google Patents
A kind of production method of no aldehyde adhesive floor base material Download PDFInfo
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- CN107553684A CN107553684A CN201711047361.1A CN201711047361A CN107553684A CN 107553684 A CN107553684 A CN 107553684A CN 201711047361 A CN201711047361 A CN 201711047361A CN 107553684 A CN107553684 A CN 107553684A
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- wood
- fibred
- base material
- floor base
- hot pressing
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Abstract
The invention discloses a kind of production method of no aldehyde adhesive floor base material,This method sequentially includes timber being processed into wood-fibred,Wood-fibred is dried,Wood-fibred cools down,Wood-fibred is glued,Paving prefabricating,Slab hot pressing,Cool down quenched,Sanding sawing,Dried wood-fibred moisture content is 5-7%,After dried wood-fibred is cooled into 25-30 DEG C,The modification MDI adhesive of wood fibre weight 3-5% is uniformly sprayed into wood-fibred,In slab heat-press step,Steel strip surface spraying releasing agent under steel band and press on to press,The releasing agent is by surfactant,Wetting agent and dispersant are formed,Drawbacks described above existing for prior art can be overcome using this method,Produce reliable in quality without aldehyde adhesive floor base material,The floor base material produced has intensity height,Water-tolerant,The advantages such as aldehyde contenting amount is low,The use of floor base material long-time will not bubble,Bulge or cracking.
Description
Technical field
The present invention relates to a kind of method that floor base material is produced using wood-fibred as raw material, especially one kind is with without aldehyde glue and wood
Fiber is the method that raw material produces floor base material.
Background technology
Using wood-fibred as raw material produce floor base material be by wood raw material peeling, chip, wood chip screening, washing, pre-cooked,
Wood-fibred is made in boiling, defibrator process, then through technique systems such as impregnation, drying, paving prefabricating, slab hot pressing, quenched, the sanding sawings of cooling
Into a kind of artificial board.This floor base material that in the market is sold in process of production, more using urea-formaldehyde glue as binding agent,
Wood-fibred is bonded together and solidified with physical bond mode.Producing and using using the floor base material that urea-formaldehyde glue is produced
During can discharge aldehyde-containing gas, not only pollute environment, nor be beneficial to health.Therefore, some sheet material factories
Family selection MDI substitutes urea-formaldehyde glue production without aldehyde adhesive floor base material as binding agent, and this no aldehyde adhesive floor base material is to greatest extent
Ground reduces the aldehyde contenting amount of floor base material, and its product is favored by people.But prior art is being used as binding agent using MDI
More using with using urea-formaldehyde glue identical processing step when producing floor base material, sprayed before wood-fibred is dried into wood-fibred
MDI glue, this causes part isocyanates reacts during drying with the water in wood-fibred to generate polyureas, due to this
The irreversibility of reaction so that bonding efficiency is influenceed by certain in final hot pressing, so as to influence the matter of floor base material
Amount.Further, since MDI tack is poor so that the initial strength of slab is poor after paving prefabricating step, the plate after precompressed
Base easily causes surface defect during hot press steel band is transferred to, so as to influence the light of floor base surface after hot pressing
Cleanliness.
The content of the invention
Invention technical problems to be solved are：A kind of production method of no aldehyde adhesive floor base material is provided, can using this method
To overcome drawbacks described above existing for prior art, produce reliable in quality without aldehyde adhesive floor base material, the floor base produced
Material has that intensity is high, water-tolerant, the advantages such as aldehyde contenting amount is low, and the use of floor base material long-time will not bubble, bulge or cracking.
The technical solution adopted for solving the technical problem：A kind of production method of no aldehyde adhesive floor base material, sequentially including will
Timber be processed into wood-fibred, wood-fibred drying, wood-fibred cooling, wood-fibred applying glue, paving prefabricating, slab hot pressing, cooling it is quenched,
Sanding sawing,
In wood-fibred drying steps, dried wood-fibred moisture content is 5-7%；
In wood-fibred cooling step, dried wood-fibred is cooled to 25-30 DEG C；
It is glued in wood-fibred in step, the modification MDI adhesive of wood fibre weight 3-5% is uniformly sprayed into wood-fibred, it is described
Modified MDI adhesive is '-diphenylmethane diisocyanate isomer and homologue, isocyanates, polyalcohol and diphenylmethyl
The mixture of alkane -4,4'- di-isocyanate reaction products；
In slab heat-press step, to press on steel strip surface spraying releasing agent under steel band and press, the releasing agent is by surface
Activating agent, wetting agent and dispersant are formed.
Improvement as the present invention：
In slab heat-press step, the speed of press is 330mm/s, and the hot pressing factor is 10s/mm.
As a further improvement on the present invention：
In slab heat-press step, sequentially it is divided into five stages progress, the temperature of first stage hot pressing is 220 DEG C, second stage
The temperature of hot pressing is 214 DEG C, and the temperature of phase III hot pressing is 210 DEG C, and the temperature of fourth stage hot pressing is 195 DEG C, the 5th rank
The temperature of section hot pressing is 186 DEG C.
Further improvement as the present invention：
In paving prefabricating step, the pressure of preformer import is 58-60bar, and the pressure of preformer outlet is 80-91bar.
Further improvement as the present invention：
In wood-fibred step is processed into, digested wood chip is fine by defibrator solution, while to adding tekite in defibrator
Wax, paraffin applied amount are 4.6-4.7kg/m3。
Another as the present invention improves：
The quantity for spray of releasing agent is 6g/m2。
Another improvement as the present invention：
In paving prefabricating step, it is 830kg/m that wood-fibred is pressed into density in advance3Slab.
Beneficial effect：The production method without aldehyde adhesive floor base material of the present invention is as a result of to be modified MDI adhesive generations
Floor base material is produced for common urea-formaldehyde glue, and is joined for the characteristic of modified MDI adhesive using special processing step and technique
Number carrys out grown place plate base material, by will be first glued again after wood-fibred drying, cooling, effectively prevent modified MDI adhesive in wood
Generation polyureas is reacted during fiber drying with water, makes the floor base material inter-fiber bonds degree produced using the inventive method
More preferably, base material internal structure is finer and close, and floor base material has that intensity is high, water-tolerant, the advantages such as aldehyde contenting amount is low, floor base material length
Time use will not bubble, bulge or cracking.Due to reasonably define in slab heat-press step the speed of press and hot pressing because
Son, make the chemical bonding solidification effect of adhesive and wood-fibred in the floor base material produced using the inventive method more preferable, institute
The non-deformability of the floor base material of production is stronger.Due to employing the hot pressing of five stages in slab heat-press step, and foundation changes
Property MDI and wood-fibred reaction, curing characteristics, creatively employ step temperature hot pressing, enable MDI fully anti-with wood-fibred
Should, solidification, form stable chemical bonding network, realize it is minimum only can with the modification MDI adhesive of wood fibre weight 3%
To produce the floor base material for complying fully with requirement, modified MDI adhesive consumption is reduced, is improving floor base material quality
Meanwhile production cost will not be increased, further improve the market competitiveness of the floor base material using the inventive method production.By
In reasonably defining the pressure of preformer import and the pressure of outlet in paving prefabricating step, the slab for making to be formed after precompressed has
There is certain intensity, poor to make up MDI glue initial viscosities, the slab after precompressed holds during hot press steel band is transferred to
The drawbacks of easily causing surface defect, makes after hot pressing that the finish of floor base surface and flatness are more preferable, disclosure satisfy that production is high
The requirement on light floor.As a result of in wood-fibred step is processed into, to grinding machine in add the technical characteristic of melt paraffin, make
Paraffin is sufficiently mixed with wood-fibred, is on the one hand improved the intensity of the slab after precompressed, is on the other hand also improved floor base material
Water resistance.Due to reasonably defining the quantity for spray of releasing agent, while steel band haftplatte is prevented, reduce to greatest extent
Influence of the releasing agent to floor substrate mass.Due to reasonably defining the density of slab after paving prefabricating, slab ensure that
The core of slab and top layer can fully be heated, solidify in heat-press step, make the floor base material density produced evenly, internal
Stress distribution also evenly, therefore, has good processing characteristics using the inventive method production without aldehyde adhesive floor base material, and
For a long time using will not also deform, ftracture in adverse circumstances, quality is better than the floor of urea-formaldehyde glue production.Using this method production
Floor base material is due to being free of formaldehyde in adhesive, therefore, the aldehyde-containing gas only carried in floor base material containing minimal amount of wood-fibred,
Meet E0Level floor base material standard.
Embodiment
The production method without aldehyde adhesive floor base material of the present invention is described in further detail below.
The production method without aldehyde adhesive floor base material of the present invention sequentially includes timber being processed into wood-fibred, wood-fibred is done
The processing steps such as dry, wood-fibred cooling, wood-fibred applying glue, paving prefabricating, slab hot pressing, quenched, the sanding sawing of cooling.
Wherein：
In wood-fibred step is processed into, digested wood chip is fine by defibrator solution, while to adding tekite in defibrator
Wax, paraffin applied amount are 4.6-4.7kg/m3.
In wood-fibred drying steps, dried wood-fibred moisture content is 5-7%；
In wood-fibred cooling step, dried wood-fibred is cooled to 25-30 DEG C；
It is glued in wood-fibred in step, the modification MDI adhesive of wood fibre weight 3-5% is uniformly sprayed into wood-fibred, it is described
Modified MDI adhesive is '-diphenylmethane diisocyanate isomer and homologue, isocyanates, polyalcohol and diphenylmethyl
The mixture of alkane -4,4'- di-isocyanate reaction product, modified MDI adhesive preferably step Chemical trade using Hensel（Shanghai）
The I-BOND MDF EM 4330 that available from Co., Ltd are modified MDI, and being glued in step should be by the temperature of modified MDI adhesive
Control is at 25-30 DEG C；
In paving prefabricating step, the pressure of preformer import is 58-60bar, and the pressure of preformer outlet is 80-91bar.
It is 830kg/m that wood-fibred is pressed into density in advance3Slab.
In slab heat-press step, to press on steel strip surface spraying releasing agent, the spraying of releasing agent under steel band and press
Measure as 6g/m2, the releasing agent is made up of surfactant, wetting agent and dispersant, and releasing agent is preferably using agreeing day（Shanghai）
The Chem-Tren WC-8254W d releasing agents that available from trade Co., Ltd.
In slab heat-press step, the speed of press is 330mm/s, and the hot pressing factor is 10s/mm, in slab heat-press step,
Sequentially being divided into five stages is carried out, and the temperature of first stage hot pressing is 220 DEG C, and the temperature of second stage hot pressing is 214 DEG C, and the 3rd
The temperature of stage hot pressing is 210 DEG C, and the temperature of fourth stage hot pressing is 195 DEG C, and the temperature of the 5th stage hot pressing is 186 DEG C.
Sheet material after hot pressing is through cooling down quenched, sanding sawing, grading and floor base material finished product is made in packaging.
The preferred embodiment of the present invention described in detail above, still, the present invention are not limited in above-mentioned embodiment
Detail, in the range of the technology design of the present invention, a variety of simple variants can be carried out to technical scheme, this
A little simple variants belong to protection scope of the present invention.
Claims (7)
1. a kind of production method of no aldehyde adhesive floor base material, sequentially include timber being processed into wood-fibred, wood-fibred drying, wood fibre
Cooling, wood-fibred applying glue, paving prefabricating, slab hot pressing, quenched, the sanding sawing of cooling are tieed up, it is characterized in that：
In wood-fibred drying steps, dried wood-fibred moisture content is 5-7%；
In wood-fibred cooling step, dried wood-fibred is cooled to 25-30 DEG C；
It is glued in wood-fibred in step, the modification MDI adhesive of wood fibre weight 3-5% is uniformly sprayed into wood-fibred, it is described
Modified MDI adhesive is '-diphenylmethane diisocyanate isomer and homologue, isocyanates, polyalcohol and diphenylmethyl
The mixture of alkane -4,4'- di-isocyanate reaction products；
In slab heat-press step, to press on steel strip surface spraying releasing agent under steel band and press, the releasing agent is by surface
Activating agent, wetting agent and dispersant are formed.
2. the production method of no aldehyde adhesive floor base material according to claim 1, it is characterized in that：
In slab heat-press step, the speed of press is 330mm/s, and the hot pressing factor is 10s/mm.
3. the production method of no aldehyde adhesive floor base material according to claim 2, it is characterized in that：
In slab heat-press step, sequentially it is divided into five stages progress, the temperature of first stage hot pressing is 220 DEG C, second stage
The temperature of hot pressing is 214 DEG C, and the temperature of phase III hot pressing is 210 DEG C, and the temperature of fourth stage hot pressing is 195 DEG C, the 5th rank
The temperature of section hot pressing is 186 DEG C.
4. the production method of no aldehyde adhesive floor base material according to claim 4, it is characterized in that：
In paving prefabricating step, the pressure of preformer import is 58-60bar, and the pressure of preformer outlet is 80-91bar.
5. the production method of no aldehyde adhesive floor base material according to claim 5, it is characterized in that：
In wood-fibred step is processed into, digested wood chip is fine by defibrator solution, while to adding tekite in defibrator
Wax, paraffin applied amount are 4.6-4.7kg/m3。
6. the production method without aldehyde adhesive floor base material according to any one of claim 1 to 5, it is characterized in that：
The quantity for spray of releasing agent is 6g/m2。
7. the production method of no aldehyde adhesive floor base material according to claim 6, it is characterized in that：
In paving prefabricating step, it is 830kg/m that wood-fibred is pressed into density in advance3Slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711047361.1A CN107553684A (en) | 2017-10-31 | 2017-10-31 | A kind of production method of no aldehyde adhesive floor base material |
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| CN201711047361.1A CN107553684A (en) | 2017-10-31 | 2017-10-31 | A kind of production method of no aldehyde adhesive floor base material |
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Cited By (4)
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| CN107553658A (en) * | 2016-06-30 | 2018-01-09 | 张家港保税区鑫和成国际贸易有限公司 | String board production technology |
| CN110103311A (en) * | 2018-02-01 | 2019-08-09 | 寿光市鲁丽木业股份有限公司 | A kind of heat pressing process of environment-friendly type oriented wood chipboard |
| CN111660400A (en) * | 2020-06-11 | 2020-09-15 | 大亚人造板集团有限公司 | Method for manufacturing aldehyde-free ultra-light 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 |
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| JPH11147212A (en) * | 1997-11-17 | 1999-06-02 | Kimura Chem Plants Co Ltd | Manufacture of fiber board |
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| JPH11147212A (en) * | 1997-11-17 | 1999-06-02 | Kimura Chem Plants Co Ltd | Manufacture of fiber board |
| CN101058208A (en) * | 2006-04-17 | 2007-10-24 | 戴武兵 | Formaldehyde-less fiber board and its preparation method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107553658A (en) * | 2016-06-30 | 2018-01-09 | 张家港保税区鑫和成国际贸易有限公司 | String board production technology |
| CN110103311A (en) * | 2018-02-01 | 2019-08-09 | 寿光市鲁丽木业股份有限公司 | A kind of heat pressing process of environment-friendly type oriented wood chipboard |
| CN111660400A (en) * | 2020-06-11 | 2020-09-15 | 大亚人造板集团有限公司 | Method for manufacturing aldehyde-free ultra-light 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 |
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Application publication date: 20180109 |