CN104097241B - A kind of core-board processing technology of low aldehyde - Google Patents
A kind of core-board processing technology of low aldehyde Download PDFInfo
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- CN104097241B CN104097241B CN201410314878.2A CN201410314878A CN104097241B CN 104097241 B CN104097241 B CN 104097241B CN 201410314878 A CN201410314878 A CN 201410314878A CN 104097241 B CN104097241 B CN 104097241B
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- plate
- aldehyde
- lath
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Abstract
The invention discloses a kind of core-board processing technology of low aldehyde, belong to plank processing technique field, comprise central layer splicing, middle plate veneer, aldehyde step falls in dash board veneer and deburring, described central layer splicing comprises log segment, open bar, dry, S4S, longitudinally mortise, a gluing, row's plate, side pressure jigsaw and normal temperature self-drying, described middle plate veneer comprises second glue spreading, plate in subsides, a hot pressing, naturally a cooling and sanding, described dash board veneer comprises gluing three times, paste dash board, secondary hot pressing and naturally cooling, described deburring is fallen aldehyde and is comprised cutting edge, secondary sanding, warehouse-in and two ends edge sealing. the technical program by after solidifying at traditional adhesive at its surface-coated environmental protection viscose glue, traditional adhesive layer is enclosed in to internal layer, in ensureing lath splicing intensity, reached the effect that effective minimizing free state formaldehyde discharges.
Description
Technical field
The invention belongs to plank processing technique field, relate to a kind of core-board processing work of low aldehydeSkill.
Background technology
Core-board holds that screw power is good, and intensity is high, has the features such as matter heavily fortified point, sound absorption, thermal insulation,And moisture content is not high, between 10%-13%, to process easyly, purposes is the most extensive. WithThe comparison of solid wood jigsaw, core-board dimensionally stable, not yielding, effectively overcome timber respectively toThe opposite sex, has higher transverse strength, owing to strictly observing symmetrical assembly principle, effectively keeps awayExempt from the buckling deformation of sheet material. Laminated wood board face is attractive in appearance, and breadth is roomy, easy to use, mainBe applied to Furniture manufacture, door-plate, wallboard etc.
Traditional core-board is formed by the plank of glue laminated splicing in the middle of two veneers, due to splicingPlank side directly dock, directly gluing is hot-forming, and that horizontal central layer is difficult for ensureing is thickDegree is consistent, thereby affects gluing effect, and while sanding flat in sanding operation, the sand amount of cutting increases,Can increase difficulty of processing, cause the lateral stressed inequality of central layer seam crossing simultaneously, easily come unglued, withAs for finished product buckling deformation, affect product quality; Again due to plate joggling apparatus splicing and assembly matching boardIn gluing formula, adopt containing the higher adhesive of aldehyde, in process, do not fall again aldehydeProcess, cause finished product free formaldehyde release too high, in finishing or making furniture, used this type ofAfter material, will produce greatly harm to health.
In the prior art, for reducing the harm of formaldehyde, there are some national standards to require environment-friendly typeCore-board must use environment-friendly type adhesive, but compared with traditional adhesive, its bonding strengthRelatively poor, production cost is also higher, is therefore difficult to be widelyd popularize.
Summary of the invention
The object of this invention is to provide a kind of core-board processing technology of low aldehyde, control tradition and be coated withFree formaldehyde release after glue, simultaneously by architecture advances, what in increase, plate was horizontally-spliced gluesGlue area coverage, the transverse strength of plate in increase.
The present invention is achieved by following technical solution.
A core-board processing technology for low aldehyde, comprises central layer splicing, middle plate veneer, dash boardAldehyde step falls in veneer and deburring, and concrete steps are as follows:
1) central layer splicing
A. log segment
B. open bar: the log of segment is cut into lath with stripping-cutting machine;
C. dry: lath is placed in to steam drying room and dries, control lath water content and exist12％～15％；
D. S4S: carry out surely thick two-sided processing by four-side planing, ensure lath thicknessUnanimously;
E. longitudinal mortise: longitudinally open blind mortise along lath side one side, a side is longitudinally processed tenon;
F. a gluing: artificial gluing is carried out in lath both sides;
G. arrange plate: by the blind mortise of lath and tenon corresponding splicing respectively;
H. side pressure jigsaw: the lath of having spelled is sent in side compression machine, under 100～120 DEG C of conditionsBe spliced into entire plate core;
I. normal temperature self-drying: the plate core of moulding is placed more than 24 hours under normal temperature condition, made itCooling, adhesive solidifies simultaneously;
2) plate veneer in
A. second glue spreading: adopt and be uniformly coated on plate core two sides without aldehyde glue;
B. plate in pasting: middle plate is fitted with plate core two sides respectively;
C. a hot pressing: the slab after plate in laminating is placed in to hot press, precompressed 50min,After under 100 DEG C～120 DEG C conditions hot pressing 10min;
D. naturally cooling: the slab after hot pressing to be placed 10～12 hours under normal temperature condition, madeIt is naturally cooling, and adhesive solidifies simultaneously;
E. a sanding: sanding processing is carried out in cooled slab two sides;
3) dash board veneer
A. three gluings: the slab two sides after sanding is adopted and is evenly coated with without aldehyde glue;
B. paste dash board: dash board is pasted respectively on the slab two sides after gluing;
C. secondary hot pressing: the plate that partly becomes of pasting after dash board is placed in to hot press, precompressed 20 minutesAfter under 90～100 DEG C of conditions of temperature hot pressing 5min;
D. naturally cooling: the slab after hot pressing to be placed 10～12 hours under normal temperature condition, madeIt is naturally cooling, and adhesive solidifies simultaneously;
4) aldehyde falls in deburring
A. cutting edge: will partly become plate four limit cuttings neat according to size on edge cutting machine;
B. two sandings: half-and-half become plate two surfaces to carry out surely thick sanding;
C. warehouse-in: will partly become plate to be placed in storehouse to place 3～4 days after sanding, control storehouse temperatureDegree is at 25～35 DEG C, and indoor humidity, 15%～20%, keeps well-ventilated simultaneously;
D. two ends edge sealing: partly becoming the longitudinal both ends of the surface of plate to be evenly coated with formaldehyde closure material, treat materialSolidify rear outbound, obtain production board.
In described central layer splicing step, longitudinally the tenon degree of depth of blind mortise is less than width, tenon size withBlind mortise coupling, and tenon height is less than the blind mortise degree of depth; The adhesive that gluing uses is to passSystem containing aldehyde adhesive.
Described deburring is fallen in aldehyde step, in storehouse, a few days ago ground is once spilt in every 4 hoursWater operation; The thickness of two ends gluing is 0.4～0.8mm.
The invention has the beneficial effects as follows:
The core-board processing technology of a kind of low aldehyde of the present invention:
1, by the splicing of gluing after the longitudinal mortise of lath side, increase its adhesive coverage rate,Improve the bond strength between core bar, thereby reached the effect that improves production board transverse strength;
2, in central layer splicing step, by being coated with on its surface after solidifying at traditional adhesiveCloth environmental protection viscose glue, is enclosed in internal layer by traditional adhesive layer, is ensureing lath splicing intensityMeanwhile, reached the effect that effective minimizing free state formaldehyde discharges;
3, by half-finished product plate is placed in to storehouse, simultaneously artificial improve temperature in storehouse andHumidity, and keep ventilating, reach the effect of accelerating the volatilization of residual formaldehyde composition;
4, finally at plate two ends coating formaldehyde closed material, the internal layer viscose glue exposing during by trimmingIn agent is enclosed in, stop the formaldehyde composition volatilization of production board completely.
Brief description of the drawings
Fig. 1 is process chart of the present invention;
Fig. 2 is cross-sectional structure schematic diagram of the present invention.
In figure: 1-lath, 2-blind mortise, 3-tenon.
Detailed description of the invention
Further describe technical scheme of the present invention below in conjunction with accompanying drawing, but claimed scopeDescribed in being not limited to.
As shown in Figure 1 and Figure 2, the core-board processing technology of a kind of low aldehyde of the present invention,Comprise that aldehyde step falls in central layer splicing, middle plate veneer, dash board veneer and deburring, concrete steps are as follows:
1) central layer splicing
A. log segment
B. open bar: the log of segment is cut into lath 1 with stripping-cutting machine;
C. dry: lath 1 is placed in to steam drying room and dries, control lath water content12%～15%;
D. S4S: carry out surely thick two-sided processing by four-side planing, ensure that lath 1 is thickDegree is consistent;
E. longitudinal mortise: longitudinally open blind mortise 2, one sides along lath side one side and longitudinally process correspondenceTenon 3, the tenon degree of depth of longitudinally opening blind mortise 2 is less than width, tenon 3 sizes are mated with blind mortise 2,And tenon 3 is highly less than blind mortise 2 degree of depth; The mortise degree of depth is more shallow, is easy to processing, and tenon is connectThe stressing conditions impact at head place is very little, and the adhesive coverage rate of lath stitching portion is increased,Promote the reliability of gluing together between lath, thereby strengthened the longitudinal strength of finished product;
F. a gluing: because lath splicing is the important leverage of core-board transverse strength, andThe bonding strength of novel environment friendly aldehyde-free adhesive is relatively poor, therefore still adopt traditional adhesiveArtificial gluing is carried out in lath both sides;
G. arrange plate: by the blind mortise of lath 2 and tenon 3 corresponding splicings respectively;
H. side pressure jigsaw: the lath of having spelled is sent in side compression machine, under 100～120 DEG C of conditionsBe spliced into entire plate core;
I. normal temperature self-drying: the plate core of moulding is placed more than 24 hours under normal temperature condition, made itCooling, adhesive solidifies simultaneously;
2) plate veneer in
A. second glue spreading: adopt and be uniformly coated on plate core two sides without aldehyde glue, a gluing is adoptedWith traditional adhesive be completely enclosed within; Meanwhile, the novel bonding capacity without aldehyde glue is completeThe required bonding strength of plate veneer in meeting;
B. plate in pasting: middle plate is fitted with plate core two sides respectively;
C. a hot pressing: the slab after plate in laminating is placed in to hot press, precompressed 50min,After under 100 DEG C～120 DEG C conditions hot pressing 10min;
D. naturally cooling: the slab after hot pressing to be placed 10～12 hours under normal temperature condition, madeIt is naturally cooling, and adhesive solidifies simultaneously;
E. a sanding: sanding processing is carried out in cooled slab two sides;
3) dash board veneer
A. three gluings: the slab two sides after sanding is adopted and is evenly coated with without aldehyde glue; New hereinThe bonding capacity without aldehyde glue of type also can meet the required bonding strength of dash board veneer completely;
B. paste dash board: dash board is pasted respectively on the slab two sides after gluing;
C. secondary hot pressing: the plate that partly becomes of pasting after dash board is placed in to hot press, precompressed 20 minutesAfter under 90～100 DEG C of conditions of temperature hot pressing 5min;
D. naturally cooling: the slab after hot pressing to be placed 10～12 hours under normal temperature condition, madeIt is naturally cooling, and adhesive solidifies simultaneously;
4) aldehyde falls in deburring
A. cutting edge: will partly become plate four limit cuttings neat according to size on edge cutting machine;
B. two sandings: half-and-half become plate two surfaces to carry out surely thick sanding;
C. warehouse-in: will partly become plate to be placed in storehouse to place 3～4 days after sanding, control storehouse temperatureDegree is at 25～35 DEG C, and indoor humidity, 15%～20%, keeps well-ventilated, a few days ago simultaneouslyEvery 4 hours to the ground operation of once sprinkling water. Known according to the chemical property of formaldehyde, formaldehydeVolatilization affected obviously by temperature and humidity, temperature and humidity is higher, its volatilization is faster, therefore thisIn step, by improving the temperature and humidity in storehouse, keep good ventilation simultaneously, add allegroThe volatilization of upper residual formaldehyde; Deform for fear of plate overdrying, in good time in storehouseThe operation of sprinkling water, to ensure indoor enough humidity, thereby ensures that the water content of plate is stable.
D. two ends edge sealing: partly becoming the longitudinal both ends of the surface of plate to be evenly coated with formaldehyde sealer or formaldehyde envelopeClose wax, painting wax thickness is 0.4～0.8mm, the internal layer adhesive sealing of exposing during by end face trimmingInterior, outbound after material solidification, obtains core-board finished product.
The core-board making according to this technique, superior in quality, environment protection health, can reach countryE1 grade standard.
Claims (2)
1. a core-board processing technology for low aldehyde, comprise central layer splicing, middle plate veneer,Aldehyde step falls in dash board veneer and deburring, it is characterized in that:
Specifically comprise the steps:
1) central layer splicing
A. log segment
B. open bar: the log of segment is cut into lath (1) with stripping-cutting machine;
C. dry: lath (1) is placed in to steam drying room and dries, control lath and containThe water yield is 12%～15%;
D. S4S: carry out surely thick two-sided processing by four-side planing, ensure lath (1)Consistency of thickness;
E. longitudinal mortise: longitudinally open blind mortise (2) along lath side one side, a side is longitudinally processed tenonHead (3); The tenon degree of depth of longitudinally opening blind mortise (2) is less than width, tenon (3) size and blind mortise(2) coupling, and tenon (3) is highly less than blind mortise (2) degree of depth;
F. a gluing: use traditionally containing aldehyde adhesive, artificial gluing is carried out in lath both sides;
G. arrange plate: by the blind mortise of lath (2) and tenon (3) corresponding splicing respectively;
H. side pressure jigsaw: the lath of having spelled is sent in side compression machine, under 100～120 DEG C of conditionsBe spliced into entire plate core;
I. normal temperature self-drying: the plate core of moulding is placed more than 24 hours under normal temperature condition, made itCooling, adhesive solidifies simultaneously;
2) plate veneer in
A. second glue spreading: adopt and be uniformly coated on plate core two sides without aldehyde glue;
B. plate in pasting: middle plate is fitted with plate core two sides respectively;
C. a hot pressing: the slab after plate in laminating is placed in to hot press, precompressed 50min,After under 100 DEG C～120 DEG C conditions hot pressing 10min;
D. naturally cooling: the slab after hot pressing to be placed 10～12 hours under normal temperature condition, madeIt is naturally cooling, and adhesive solidifies simultaneously;
E. a sanding: sanding processing is carried out in cooled slab two sides;
3) dash board veneer
A. three gluings: the slab two sides after sanding is adopted and is evenly coated with without aldehyde glue;
B. paste dash board: dash board is pasted respectively on the slab two sides after gluing;
C. secondary hot pressing: the plate that partly becomes of pasting after dash board is placed in to hot press, precompressed 20 minutesAfter under 90～100 DEG C of conditions of temperature hot pressing 5min;
D. naturally cooling: the slab after hot pressing to be placed 10～12 hours under normal temperature condition, madeIt is naturally cooling, and adhesive solidifies simultaneously;
4) aldehyde falls in deburring
A. cutting edge: will partly become plate four limit cuttings neat according to size on edge cutting machine;
B. two sandings: half-and-half become plate two surfaces to carry out surely thick sanding;
C. warehouse-in: will partly become plate to be placed in storehouse to place 3～4 days after sanding, control storehouse temperatureDegree is at 25～35 DEG C, and indoor humidity, 15%～20%, keeps well-ventilated simultaneously, and frontTwo days every 4 hours to the ground operation of once sprinkling water;
D. two ends edge sealing: partly becoming the longitudinal both ends of the surface of plate to be evenly coated with formaldehyde closed material, treat materialMaterial solidifies rear outbound, obtains production board.
2. the core-board processing technology of a kind of low aldehyde according to claim 1, its featureBe: described deburring is fallen in aldehyde step, the thickness of two ends gluing is 0.4～0.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410314878.2A CN104097241B (en) | 2014-07-03 | 2014-07-03 | A kind of core-board processing technology of low aldehyde |
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| CN201410314878.2A CN104097241B (en) | 2014-07-03 | 2014-07-03 | A kind of core-board processing technology of low aldehyde |
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| CN104097241B true CN104097241B (en) | 2016-05-11 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105365003A (en) * | 2015-11-13 | 2016-03-02 | 合肥市科天化工有限公司 | Manufacturing technology for water-based zero-formaldehyde blockboard |
| CN106113217A (en) * | 2016-07-03 | 2016-11-16 | 石家庄华杰木业有限公司 | The preparation method of core-board base material ecological board |
| CN106113166B (en) * | 2016-07-03 | 2018-01-30 | 石家庄华杰木业有限公司 | The steam-injection health preparation method of core-board base material ecological board |
| CN107020669A (en) * | 2017-05-05 | 2017-08-08 | 贵港市鑫宏木业有限公司 | A kind of technique for producing core-board |
| CN107457843A (en) * | 2017-08-18 | 2017-12-12 | 安吉晨源环保资源再生利用有限公司 | A kind of environment-friendly sheet |
| CN110341009A (en) * | 2019-06-25 | 2019-10-18 | 南宁科天水性科技有限责任公司 | A kind of the impregnated bond paper facing core-board and its production technology of formaldehydeless release |
| CN110733084A (en) * | 2019-10-24 | 2020-01-31 | 浙江升华云峰新材股份有限公司 | formaldehyde-free joinery board core and preparation method thereof |
| CN112914245B (en) * | 2021-01-29 | 2022-05-06 | 美克国际家私（天津）制造有限公司 | Dining cabinet assembling method |
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