CN1281391C - Soft material single-board materials and wooden products with surface hardness improve - Google Patents

Soft material single-board materials and wooden products with surface hardness improve Download PDF

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CN1281391C
CN1281391C CN 200410096966 CN200410096966A CN1281391C CN 1281391 C CN1281391 C CN 1281391C CN 200410096966 CN200410096966 CN 200410096966 CN 200410096966 A CN200410096966 A CN 200410096966A CN 1281391 C CN1281391 C CN 1281391C
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veneer
timber
compression
resin
board materials
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CN 200410096966
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CN1644336A (en
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吴玉章
吕建雄
张久荣
孙振鸢
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中国林业科学研究院木材工业研究所
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Abstract

The present invention provides a soft single board material and a wood product with enhanced surface hardness. The soft single board material of the present invention is manufactured by carrying out thermocompression to single boards obtained by the rotation cutting of soft log, the thermocompression rate of the single board is more than 45%, and the single board can be used as a surface material. The surface of the wood product with enhanced surface hardness of the present invention is covered with the surface material made from the single board material. Under the premise of satisfying surface hardness and abrasion resistance, the product cost is greatly reduced, so the present invention is favorable for realizing industrial production and the increment and comprehensive utilization of soft wood, particularly rapid artificial forests. The present invention also provides manufacture methods for the single board materials and the wood products.

Description

The timber-work that soft material single-board materials and case hardness improve

Technical field

The present invention relates to wood processing field, a kind of timber-work that utilizes softwood processing to obtain especially is provided, the timber-work that the case hardness that comprises single-board materials and adopt this single-board materials to make significantly improves, the present invention also provides relevant process technology.

Background technology

Consider for cost and economy and durability, non-wooden surface decoration material has occupied bigger market in house ornamentation is decorated, as melamine impregnated paper, owing to have higher hardness and good abrasion resistance, have simultaneously heat-resisting resistance to chemical attack again concurrently, characteristics such as durable in use are widely used in surfaces such as furniture; Present popular laminated flooring, the surface also is to have adopted wear-resisting impregnated paper; Also have some upholstery also to adopt woodgrained paper to paste material as the surface.But in fact facing paper such as impregnated paper is owing to the non-wooden top-grade furniture surface that is difficult to be used in, and is just comparatively general as low grade products.Aspect expensive goods, timber is solid wood particularly, still in occupation of critical role.

Timber is done the surface certain requirement, at first, because the surface is the main acting surface that bears external force, hardness be arranged.Hardness is low, and the surface wrecks easily, meets the external force effect and produces depression, and surface property reduces, even paint finishing is handled, also the surface produces depression because the rigidity of inner timber is not enough; Secondly, wearability be arranged, because wood structure particularity, its wearability is all poor.Consider for intensity and wearability, at present, as the solid wooden compound floor surface mainly be some hard broadleaf classes, as Manchurian ash, birch, Chinese catalpa wood, toothed oak wood, cherry, oak, beech etc., and general softwood or softwood are difficult to be used as surfacing.Because consuming excessively of worldwide wildwood timber resources, especially as natural hard broadleaf classes such as Manchurian ash, Chinese catalpa wood, cherry, toothed oak wood, available resources is fewer and feweri.In recent years; China from countries and regions imports such as Africa, Southeast Asia, Russia a large amount of timber; so; the surfacing of the solid wooden floor board that occurs on the market, solid wooden compound floor used Imported timber more in recent years; this not only causes the surging of timber price, and cost of material increases, and because the restriction of tropical rain forest protective policy; its cutting is fewer and feweri, and the dependence on import resource is limited at last.In order to remedy the deficiency of timber resources, industrial timber resources has progressively turned to artificial forest, certainly, also will have good economic and social benefit if can manage to utilize in the wildwood softwood to substitute part hard material.

China begins to build on a large scale artificial forest from the end of the sixties, and present national artificial afforestration is preserved area and surpassed 700,000,000 mu, ranks first in the world.Particularly nearly two during the last ten years, and a large amount of single seeds fast-growing, high-yield woods has been built by China, all enters cutting cycle at present.The characteristics of artificial forest are fast growths, but compare with wildwood, have weak point in the period of felling in turn, material is soft, the shortcoming that intensity and case hardness are low, thereby be difficult to be used in the surface with the solid wood form, difficultly contend with wildwood timber in the surface of top-grade furniture particularly, the range of application and the market competitiveness have been influenced, if its application and Study on Processing Technology are not made progress for a long time, also can influence the enthusiasm of self-employed tree cultivator's afforestation, hinder the development of artificial forest to a certain extent.

In order to overcome softwood (comprising wildwood and artificial forest) case hardness and the low shortcoming of wearability, present way is that solid wood is taked the reduced overall treatment technology, from implementation result, its case hardness and wearability is significantly improved.Utilize the timber compression to handle the key problem in technology that improves case hardness and wearability and be the fixing of compression, mainly contain two kinds of methods: the one, resin fixing means, the 2nd, heat treatment method.The resin fixing means impregnates resin in the timber in advance by the vacuum pressed treating apparatus exactly, improve temperature when compressing then and make resin solidification, thereby the compression that order produces is fixed; Heat treatment method is the timber that contains certain moisture to be compressed time heating, fixedly compression.From production efficiency, because the needed time of resin fixing means is significantly smaller than heat treatment method, therefore, the efficiency far of resin fixing means is greater than heat treatment method.

In practical operation, heat treatment method is implemented easily, and owing to do not use chemical substance, has environmental protection characteristic, but the implementation condition harshness needs high temperature and long-time, and poor continuity, under present circumstances, is difficult to realize industrialization; Adopt resin to impregnate to realize that the fixing advantage of distortion is to be out of shape fixed speed fast, be easy to serialization production, but when subject matter is whole wood impregnation resin, need high pressure and long-time (at least at 2 hours, the timber time to poor permeability is longer) processing, especially difficulty is impregnated and handle the even distribution that timber is difficult to realize resin, be unfavorable for that distortion is fixing (for the soft artificial forest log that resembles the China fir class, it is very big that the resin of its sapwood and heartwood impregnates difference on effect, more is difficult to realize even distribution).In the compression of sheet material was handled, the requirement of drying condition, needed to prolong, and duplicates drying when guaranteeing the sheet material dry mass than dried single board height drying time, and promptly dry greenwood and resin treatment material cause the serious waste of the energy.Though having reduced resin, the heat treatment fixed deformation impregnates operation, but for the uniformity that guarantees to heat, the effect that improves the efficiency of heating surface and softening timber, need high-frequency heating and saturated vapor treating apparatus, perhaps obturator, the input of equipment and the complexity of production technology have been increased, so realize that under present circumstances the processing cycle of heat treatment fixed deformation method is longer.

Except that above listed problem, the timber reduced overall is handled worst one side and is that the cost increasing degree is big.According to available data, seek out surface of good hardness and wearability, the compression ratio of timber should be more than 50%.By this calculating, processing cost just should increase more than 50%, and this also is that timber compresses the treatment technology industrialized biggest obstacle that delays.

For timber-work, say to a certain extent, as long as superficial layer reaches certain degree of hardness and wearability can meet the demands.Therefore, develop the surface compression treatment technology on the basis of timber reduced overall technology again, the key of its surface compression is the surface of compression layer at goods, has reduced the compression ratio of internal layer as far as possible, improve under the close prerequisite of effect in case hardness and wearability, reach the purpose that reduces cost.The same with the reduced overall processing method, surface compression handle also exist complex treatment process, production efficiency low, be not easy to realize problem such as industrialization, be in particular in:

The first, the surface laminated shrinkage is difficult to the instability that stable control causes the final products surface property.Compression ratio is the main factor that influences surface property, timber is the heterogeneity material, though plate surface moment at first produces distortion under the effect of external force, but the top layer also can produce distortion simultaneously with the weakness of interior part, and this distortion not only influences the compression ratio of superficial layer, and after forming product, because the existence of residual deformation, as long as condition is suitable, residual deformation will discharge, and influences the stability and the serviceability of final products in application process;

The second, because the density variation of superficial layer and internal layer under extraneous wetness action, is easy to generate buckling deformation;

The 3rd, during the density sudden turn of events of superficial layer and internal layer, be easy to generate stress at the intersection of superficial layer and internal layer and concentrate and destroy.

In sum, at present, when timber compress technique action effect gets the nod, because processing technology complexity, problems such as cost multiplication have influenced the process of industrialization of this technology, have suppressed further developing of this technology, can only be suitable for the processing of extraordinary product, be difficult to have substantial help for processing and the utilization of soft wood or artificial forest.

Summary of the invention

Processing and application present situation based on present softwood (comprising wildwood and artificial forest wood) the invention provides a kind of technology that can effectively improve the softwood case hardness, thereby can help improving the range of application and the using value of softwood.

The present invention at first provides a kind of soft material single-board materials, and this single-board materials is from the rounding veneer to softwood, and compressed can providing as surfacing promoted the using value of softwood.

The timber-work that the present invention also provides a kind of its case hardness to be enhanced, its surface has pasted above-mentioned single-board materials, under the prerequisite that satisfies case hardness and wearability needs, product cost significantly reduces, and helps realizing the increment and the comprehensive utilization of suitability for industrialized production and softwood.

The present invention also provides the manufacture method of above-mentioned single-board materials and timber-work, when reducing production costs, can realize the increment and the comprehensive utilization of softwood.

The present invention at first provides a kind of soft material single-board materials, is that the veneer that adopts the sapwood rotary-cut to the softwood log to obtain carries out hot compression and makes, and the hot pressing shrinkage of this veneer is more than 45%.

According to soft material single-board materials provided by the invention, used softwood log can be softwood or broadleaf.Especially some artificial forest have for example entered the chief species China fir of the timber plantation of cutting cycle in China south.The major defect of Chinese Fir Plantation forest material is that density is low, and material is soft, and intensity and case hardness are low, and its sapwood and heartwood have very big-difference in the following aspects, show: the firstth, the permeability aspect, the sapwood permeability is higher than heartwood, is unfavorable for the processing of resin; The secondth, the color aspect, sapwood is of light color, whiting or little Huang, and the heartwood color is dark, is Chestnut, and especially behind solar radiation, darkness deepens for color, if meet water or resin aqueous solution, the heartwood color is sepia, is unfavorable for being used as the surface.In a word, with Chinese Fir Plantation forest material be the softwood of representative directly with solid wood form utilization difficulty relatively, let alone be used as surfacing.

So, single-board materials provided by the invention is from the rotary cut venner of softwood log, for the very big softwood forest of a class limit heartwood nature difference that comprises the China fir material, be more preferably veneer from the sapwood rotary-cut, avoiding the problems referred to above aspect permeability and the color like this, and the high characteristics of sapwood permeability the impregnating to handle advantage is provided of resin more given higher level characteristic of softwood and wideer range of application simultaneously.

The present invention also provides the manufacture method of this single-board materials, comprise from rounding going out veneer and this veneer being implemented the process of hot compression, and compression ratio is controlled at more than 45%.

What the present invention adopted is veneer compression treatment technology, core is the reduced overall that adopts at present to be changed into the surface compression treatment technology rounding is become veneer, and this veneer compressed processing, by such operation, though be to be raw material with the softwood, the single-board materials case hardness and the wearability that obtain significantly improve, can be used as the wood surface ornament materials uses, and then with the compression the veneer surfacing paste on timber, especially paste surface, can significantly improve the case hardness and the wearability of timber-work at softwood.The applicant finds in test, the compression ratio of veneer hot pressing is the important indicator that influences case hardness and wearability, and to taking all factors into consideration of purposes and application places, the present invention requires the hot pressing compression ratio of veneer should be more than 45%, be preferably in the 50%-70% preferred 60%-65%; And hot pressing temperature is preferably between 150 ℃-180 ℃ preferred 160 ℃-180 ℃ generally between 140 ℃-200 ℃.

Can use common rotating-cutting equipment during rotary cut venner, generally control veneer thickness below 4mm, be preferably in 1.5-3.5mm, more preferably 2.5-3mm.

Enforcement of the present invention can provide a kind of new thinking for the comprehensive utilization softwood.At first rounding is become veneer, the remaining reel of rotary-cut can be processed into sheet material and be spliced into central layer, and the veneer that will compress again after handling pastes on central layer.By this processing method, will the case hardness and the wearability of soft material single-board such as softwood and goods be improved.For the big timber of heart sapwood nature difference, can partly make veneer by the peeler log sapwood, and poor permeability, the bad heartwood of color can be processed into central layer, realize the comprehensive utilization of raw material.Certainly, densified veneer provided by the invention can be covered on the surface of any woodwork or non-woodwork as the novel surface material.

According to technology of the present invention, the veneer that rotary-cut goes out can be implemented hot compression earlier again according to actual conditions after resin treatment, perhaps directly implement hot compression, concrete processing method can determine voluntarily, and its purpose is to guarantee that the veneer after the hot compression can satisfy the demand in the properties such as fixing and case hardness of shape.Veneer after the present invention preferably can adopt pf resin of low molecular weight to rotary-cut impregnates processing, used phenolic resins is preferably formaldehyde and the phenol mol ratio with 1.1-3.0, preferably with the mol ratio of 1.5-2.6, at pH7.5-11, condensation forms in the aqueous solution of preferred pH9-11.Preferably, it is the control benchmark that the condensation terminal point of this phenolic resins reaches more than 500% with water dilution factor (amount that adds 20 ℃ of water in the 1ml resin), preferably controls the water dilution factor more than 600%, is preferably in 900-1900%.When impregnating this veneer, the amount of dry matter of resin in timber generally requires to be preferably 5-40% greater than 5%, preferably is controlled at 10-30%.Rotary cut venner itself just has the convenience that is beneficial to resin infiltration, diffusion, because when rotary cut venner, all can produce appropriateness, uniform crack, the back side at the back side of veneer, crack, the back side has important function to impregnatability that improves resin and the uniformity of impregnating of improving resin in the present invention.Implement the concrete grammar that resin impregnates processing and be not particularly limited, the veneer of rotary-cut can be immersed in (for example aqueous solution of 5-20%) in the phenolic resin aqueous solution, soak time can be normal pressure 12~30 hours, makes the amount of resin in the veneer reach requirement.

Be to improve the impregnatability of resin, improve the uniformity that resin distributes and be convenient to serialization production in veneer, can adopt the veneer roll-in to impregnate resin.Particularly, utilize roll-in can realize that direct resin impregnates processing to full water veneer.Its operation principle is by roll-in, extrudes the moisture in the veneer, impregnates needs for satisfying resin, can produce instantaneous vacuum during deformation resilience in veneer at 30%-80% to the roll-in compression ratio of full water veneer, by this instantaneous vacuum resin is sucked in the veneer.

In addition, because veneer drying is drier easily than sheet material, the drying of resin treatment veneer also helps realizing the serialization of compression treatment process.In timber integral body or surface compression treatment technology, in order to accelerate programming rate, guarantee the uniformity of heating, need thermatron, just can enhance productivity; In order to reach the purpose of softening timber, also need sometimes to handle timber or the like with saturated vapor, these have all increased the complexity and the difficulty of production technology, and the increase of equipment input, energy consumption.

Also can adopt heat treatment method: moisture content is placed between heating platen at the timber below the fibre saturated point, presses down the compression ratio that is reduced to requirement, just fixedly compression after keeping a period of time under this temperature and pressure at certain temperature, pressure.

Before the present invention, when timber compress technique action effect got the nod, because the processing technology complexity, problems such as cost multiplication can only be suitable for extraordinary product processing, have also influenced further developing and process of industrialization of this technology.

And the employing veneer that the present invention proposes compression treatment technology can overcome the problem of above-mentioned existence, for example, picture Chinese Fir Plantation forest material, its heartwood color is dark, poor permeability, even carrying out vacuum pressed handles, the resin amount of impregnating also is difficult to reach requirement, particularly impregnating uniformity more can not be guaranteed, be unfavorable for the bulk modified processing of sheet material, and veneer compression treatment technology of the present invention is the most reasonable this optimum and otherwise effective technique in the method for utilizing just, really accomplish the excellent usefulness of excellent material, promoted the use value of artificial forest.

Compare with timber integral body or surface compression treatment technology, the advance and the novelty of veneer compression treatment technology of the present invention are: first, adopt the veneer compress technique, can make timber compression process for producing technology realize serialization, for new way has been opened up in the industrialization of timber compress technique.Second, veneer is compressed processing, can determine final compression ratio according to actual needs, avoided the difficult control of surface pressure shrinkage (want to meet the requirements of compression ratio and need take any special measures) in the surface compression treatment process, product is easy to generate warpage, superficial layer and interior interlayer and is easy to generate problems such as destruction.The 3rd, owing to introduce method for rolling treatment, avoided the dry problem of secondary sheet material that (employing resin fixed deformation method) occurs in the sheet material compression process in the veneer compression treatment technology, reduced energy consumption.The 4th, develop new product with veneer compression treatment technology, widened the application of compressed products.The 5th, for the technology of the tangible timber employing of the heart sapwood difference of for example China fir one class rotary-cut sapwood, the purpose that the soft wood surface hardness of this class of easier realization improves.The 6th, this technology can realize doing surface decoration material with the alternative natural hard broadleaf class that is bordering on exhaustion of the artificial forest wood of aboundresources and sustainable operation, improved the value of artificial forest wood, enlarged the application of artificial forest wood, social benefit and ecological benefits are remarkable.

Compare with existing compression treatment technology, utilize method of the present invention both to effectively utilize log, improved the case hardness of softwood again, accomplished fully and effectively utilizing of timber.According to technology of the present invention, the case hardness of Chinese Fir Plantation forest material is than improving 2-4 doubly before compressing, and surface abrasion resistance improves greatly, and keeps timber native texture, the little Huang of surface color.The technology of the present invention has been avoided numerous and diverse timber reduced overall treatment process, and under the prerequisite that obtains the case hardness suitable with reduced overall technology, product cost amplification reduces greatly, is easier to realize industrialization.

The final products of timber reduced overall or surface compression are sheet material, and the final product form of veneer compression processing is a surface decoration material, just as slicing veneer, wood-based plate incrustation paper can paste the surface at any material.This product has the solid wood characteristic, and wood surface texture, visual characteristic remain unchanged, and belongs to gang new in the surface decoration material.Veneer by densified veneer is handled, and has both improved wood product surface hardness and wearability, has reduced compression simultaneously and has handled the big problem of bringing of cost increasing degree.

China fir is that China's south plantation is more and entered the chief species of the timber plantation of cutting cycle, and its cultivated area accounts for 59% of 13 the province artificial forest areas in south, and its timber accounts for the 20-25% of Chinese commodity material.But because Chinese Fir Plantation woods fast growth, the period of felling in turn is short, and wood quality is soft, and intensity and case hardness are low, is difficult to be used in the surface with the solid wood form, at present, can only use with the low value form, as wood shavings, fiber etc., seldom as the solid wood products resource.Therefore, enforcement of the present invention improves value for the material of improving Chinese Fir Plantation forest material, enlarges range of application, and final the realization substitutes wildwood timber, has more social value.

The specific embodiment

Below further introduce enforcement of the present invention and effect thereof by specific embodiment, purpose is to help the reader to understand essence of the present invention and spirit better, can not constitute the qualification to the scope of the present invention.

In the following specific embodiment, the new China fir log of felling is adopted in the rotary-cut of veneer, and rotary-cut goes out the thick sapwood veneer of 3mm, after gas was done, normal pressure was immersed in 24hours in the resin aqueous solution, and veneer takes out back gas and does, and in 60 ℃ of dry 8hours, hot pressing compression processing then down of low temperature.The single-board materials of making is carried out case hardness and deformation-recovery test.

The test of case hardness is to carry out experimental condition according to Japanese JIS Z 2117 case hardness test methods: omnipotent mechanical test machine, steel ball size 10mm, compression distance 0.32mm, the average press-in speed 0.5mm/min of steel ball.

Test method is replied in the compression of goods: at first, normal pressure soaks 24hours (wherein 1hour is application of vacuum) in 30 ℃ of water, and normal pressure soaks 1hour in 60 ℃ of water then.Calculate the deformation-recovery rate under the wet condition.Deformation-recovery rate computing formula: deformation-recovery rate (%)=reply volume/deflection * 100%.

Reference examples

The new China fir log of felling, rotary-cut goes out the thick sapwood veneer of 3mm, and gas pastes on the heartwood base material after doing.Paste process conditions: 140 ℃ of temperature, time 5min.

Test result, average surface hardness 4.3N/mm 2, maximum 9.0N/mm 2, minimum of a value 2.1N/mm 2

Embodiment

Embodiment 1

Pf resin of low molecular weight: the mol ratio of formaldehyde and phenol is 1.5, makes formaldehyde and phenol in the aqueous solution of pH 9.42 condensation take place, the water dilution factor 1900% of condensation terminal point (20 ℃).Water dilution factor computing formula: water dilution factor (the %)=adding water yield (ml)/amount of resin (ml) * 100% (as follows).

This resin aqueous solution concentration 5% is impregnated processing with this resin aqueous solution to the sapwood veneer that rotary-cut goes out, and makes resin dry amount 5% in the veneer.Amount of dry matter computing formula: amount of dry matter (%)=(soaking the preceding dry weight of back dry weight-soak)/soak preceding dry weight * 100% (as follows).Hot pressing compression process condition: 140 ℃ of temperature, time 10min, the compression ratio 60%-65% of single-board materials (compression ratio is controlled with finger gauge, and below test is identical).Test result, average surface hardness 18.0N/mm 2, maximum 24.6N/mm 2, minimum of a value 10.7N/mm 2, deformation-recovery rate 11%.

Embodiment 2

Pf resin of low molecular weight: the mol ratio of formaldehyde and phenol is 1.5, makes formaldehyde and phenol in the aqueous solution of pH 10.68 condensation take place, the water dilution factor 600% of condensation terminal point.

Resin aqueous solution concentration 15% is handled resin dry amount 13% in the veneer of back.Hot pressing compression process condition: 140 ℃ of temperature, time 10min, the compression ratio 45%-50% of single-board materials.Test result, average surface hardness 13.5N/mm 2, maximum 18.7N/mm 2, minimum of a value 7.2N/mm 2, deformation-recovery rate 19%.

Embodiment 3

Pf resin of low molecular weight: the mol ratio of formaldehyde and phenol is 1.5, makes formaldehyde and phenol in the aqueous solution of pH 9.86 condensation take place, the water dilution factor 600% of condensation terminal point.

Resin aqueous solution concentration 15% is handled resin dry amount 14% in the veneer of back.Hot pressing compression process condition: 140 ℃ of temperature, time 10min, the compression ratio 60%-65% of single-board materials.Test result, average surface hardness 16.6N/mm 2, maximum 26.2N/mm 2, minimum of a value 7.0N/mm 2, deformation-recovery rate 7%.

Embodiment 4

Pf resin of low molecular weight: the mol ratio of formaldehyde and phenol is 1.5, makes formaldehyde and phenol in the aqueous solution of pH 9.86 condensation take place, the water dilution factor 900% of condensation terminal point.

Utilize the roll-in method that resin solution is impregnated in the full water veneer in the present embodiment.Impregnate condition: resin aqueous solution concentration 10%, roll-in compression ratio 70%, room temperature.Handle resin dry amount 6% in the veneer of back.Hot pressing compression process condition: 140 ℃ of temperature, time 10min, the compression ratio 60%-65% of single-board materials.Test result, average surface hardness 14.3N/mm 2, maximum 18.2N/mm 2, minimum of a value 10.7N/mm 2, deformation-recovery rate 17%.

Embodiment 5

Pf resin of low molecular weight: the mol ratio of formaldehyde and phenol is 2.5, makes formaldehyde and phenol in the aqueous solution of pH9.86 condensation take place, the water dilution factor 900% of condensation terminal point.

Resin aqueous solution concentration 10% is handled resin dry amount 14% in the veneer of back.Hot pressing compression process condition: 140 ℃ of temperature, time 10min, the compression ratio 55%-60% of single-board materials.Test result, average surface hardness 12.7N/mm 2, maximum 21.7N/mm 2, minimum of a value 2.1N/mm 2, deformation-recovery rate 33%.

Embodiment 6

Pf resin of low molecular weight: the mol ratio of formaldehyde and phenol is 2.5, makes formaldehyde and phenol in the aqueous solution of pH 10.35 condensation take place, the water dilution factor 900% of condensation terminal point.

Resin aqueous solution concentration 10%, resin dry amount 14% in the veneer.Hot pressing compression process condition: 180 ℃ of temperature, time 5min, the compression ratio 55%-60% of single-board materials.Test result, average surface hardness 12.7N/mm 2, maximum 21.7N/mm 2, minimum of a value 2.1N/mm 2, deformation-recovery rate 10%.

Embodiment 7

The single-board materials of making in the previous embodiment pastes substrate surface at appropriate format as surface decoration material, becomes timber-work.

This base material adopts the China fir heartwood behind the rotary-cut sapwood to be processed into the base material of central layer or other form, becomes the China fir goods that case hardness significantly improves after the surface pastes.

This base material also can be central layer or the heartwood that other soft wood or non-wood material are made.

Claims (16)

1, a kind of soft material single-board materials is to adopt the veneer that the softwood rounding is obtained directly to carry out hot compression or implement hot compression more earlier after resin treatment and make, and the hot pressing shrinkage of this veneer is more than 45%.
2, the described single-board materials of claim 1, wherein, described softwood log is softwood or broadleaf.
3, the described single-board materials of claim 2, wherein, described softwood log is a China fir.
4, the described single-board materials of claim 3, wherein, the veneer that the described veneer that the softwood rounding is obtained obtains for the rotary-cut sapwood.
5, each described single-board materials of claim 1-4, wherein, the hot pressing shrinkage of this veneer is 50%-70%.
6, the manufacture method of each described single-board materials of claim 1-3 comprises:
Go out veneer from rounding;
This veneer is implemented hot compression, and the hot compression temperature is 140-200 ℃, and compression ratio is more than 45%.
7, the described manufacture method of claim 6, wherein, the veneer that rotary-cut goes out is implemented earlier hot compression again after resin treatment.
8, the described manufacture method of claim 7, wherein, veneer that rotary-cut goes out impregnates processing with phenolic resins earlier, and to be formaldehyde and phenol form with mol ratio condensation in the aqueous solution of pH7.5-11 of 1.1-3.0 used phenolic resins.
9, the described manufacture method of claim 8, wherein, it is the control benchmark that the condensation terminal point of used phenolic resins reaches more than 500% with the water dilution factor.
10, claim 8 or 9 described manufacture methods, wherein, when impregnating this veneer with phenolic resins, the amount of dry matter of resin in timber is greater than 5%.
11, the described manufacture method of claim 10, wherein, when impregnating this veneer with phenolic resins, the amount of dry matter of resin in timber is 5-40%.
12, the described manufacture method of claim 6, wherein, the hot pressing shrinkage of veneer is 50%-70%.
13, the described manufacture method of claim 6 wherein, adopts the China fir log, and manufacture method comprises:
Go out veneer from the sapwood rotary-cut of log;
This veneer impregnates processing with phenolic resins earlier, and to be formaldehyde and phenol form with mol ratio condensation in the aqueous solution of pH7.5-11 of 1.1-3.0 used phenolic resins;
Veneer after above-mentioned phenolic resins is handled is implemented hot compression at 140-200 ℃, and compression ratio is more than 45%.
14, the wood surface material that adopts each described single-board materials of claim 1-4 to make.
15, the timber-work of case hardness raising, its surface is covered with the described wood surface material of claim 14.
16, the described timber-work of claim 15, wherein, the base material of these goods is made for utilizing softwood.
CN 200410096966 2004-12-08 2004-12-08 Soft material single-board materials and wooden products with surface hardness improve CN1281391C (en)

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CN104354200B (en) * 2014-12-02 2016-03-30 王凯 The densification of application cork becomes the method for hardwood
CN104354201B (en) * 2014-12-02 2016-03-30 王凯 Based on the novel hardwood that densification technology is made
CN105397876A (en) * 2015-11-02 2016-03-16 福建农林大学 China fir dense furniture profile and processing method
CN106113188A (en) * 2016-08-16 2016-11-16 崇州市欧帝名家家具有限公司 A kind of method strengthening wood surface hardness
CN106272852A (en) * 2016-08-16 2017-01-04 崇州市欧帝名家家具有限公司 A kind of method of modified cabinet-wood case hardness
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