CN1114927A - Compound flax leftover-shaving board and its manufacture method - Google Patents
Compound flax leftover-shaving board and its manufacture method Download PDFInfo
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- CN1114927A CN1114927A CN 93114868 CN93114868A CN1114927A CN 1114927 A CN1114927 A CN 1114927A CN 93114868 CN93114868 CN 93114868 CN 93114868 A CN93114868 A CN 93114868A CN 1114927 A CN1114927 A CN 1114927A
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Abstract
The flax leftover-shaving compound board is made up of flax leftover as primary raw material and sawdust or similar wooden cellulose through cleaning, drying, sorting, coating adhesive, airflow tiling and thermal pressing, and features low release of free formaldehyde as low-poison urea-formaldehyde resin is used, light weight, fine and dense tissue, high strength and elasticity and easy machining.
Description
The present invention relates to a kind of by other lignocellulosic materials of the approximate sawdust of shive, sawdust or form and compound shive particieboard and the manufacture method thereof that adhesive is formed.
Existing wood-based plate has several, and these wood-based plates are made with vegetalitas material, inorganic mineral material and adhesive, and has obtained to be better than the effect of common plank in some aspects.Though raw material sources are extensive, too complicated on the level of the selection of material, plate and manufacturing process, the production cost height is difficult to realize suitability for industrialized production.As Chinese patent publication number: CN1031959A " artificial composite plank and manufacture method thereof ", because the material matching kind is too much, and need modification to handle, cause complex process, long and manufacturing cost height of production cycle, the employing layering is mated formation, and is difficult to guarantee the uniformity of mating formation cause sheet material physical and mechanical property inequality; The adding of granular material increases surface area, and required glue amount rises, and gas permeability is poor, is difficult to obtain finished product, and practical value is little.And for example Chinese patent publication number CN1045727A " composite vegetable board and manufacturing process thereof " exists the raw material variety collocation too much too, also needs modification to handle, problems such as complex process, production cycle length and manufacturing cost height.And add carbimide in the adhesive, increased the insecurity that sheet material uses.It is poor that existing shive particieboard also exists surface quality, is difficult to the secondary facing, limited the development utilization of shive plate.
The objective of the invention is in order to overcome the shive surface of chipboard of poor quality and a kind of compound shive particieboard that light weight, the good and every physical and mechanical property index of surface quality all are better than every index of regulation in the national standard " GB/T4897-92 particieboard " that has is provided.Product can be widely used in height, middle-grade furniture, building, house and car and boat finishing.
The present invention also aims to provide a kind of low-cost commercial run of making above-mentioned compound shive particieboard.Make compound shive particieboard can satisfy above-mentioned requirements by the method manufacturing.
The present invention constitutes like this, it is a kind of compound shive particieboard, mainly the section of being made up of shive and adhesive etc. to the grading structure that centre material from fine to coarse constitutes, is characterized in that also adding the lignocellulosic materials of the approximate sawdust of form that sawdust or reed, beans bar, waste of flax, tobacco rod, eggplant bar etc. make from two outer surfaces in material.The above-mentioned material that adds mainly is distributed in the top layer and time top layer of compound shive particieboard.Other lignocellulosic materials of the approximate sawdust of sawdust that adds or form accounts for 5-10% of gross weight.
The manufacture method of compound shive particieboard mainly is that shive is cleaned (removing foreign material such as fiber, dust, snippings), drying, sorting, applying glue, airflow pavement slab, hot-forming, it is characterized in that mainly may further comprise the steps before moulding:
The material matching of a. compound shive particieboard:
Shive accounts for 74-83% of gross weight,
This plain raw material of fiber that sawdust or form are similar to sawdust accounts for 5～10% of gross weight,
Required other auxiliary chemical raw materials of adhesive and technology accounts for 11.0～14.5% of gross weight,
Waterproofing agent accounts for 1.0～1.5 of gross weight,
B. sawdust need not to handle direct adding through in the qualified hards after cleaning and shive drying, sorting, applying glue, airflow pavement slab, hot-forming together,
C. after waste of flax, eggplant bar and tobacco rod being cut into the tablet that length is 10mm earlier, row adds after pulverizing, polishing again,
D. to reed earlier with after the broken pressure of breaking machine, polish after cutting into the length of 10mm again,
E. pulverize after the beans bar directly being cut into the length of 10mm, polishing,
For obtaining accurate raw material proportioning, also can the independent drying of lignocellulosic materials with the approximate sawdust of sawdust or other form after, when applying glue, directly be added in the material of top layer by the proportioning accurate measurement.
Below compound shive particieboard of the present invention and manufacture method thereof are described in more detail:
Other lignocellulosic materials, adhesive, waterproofing agent, curing agent that compound shive particieboard mainly is similar to sawdust by shive, sawdust or form etc. formed.Its section is respectively to the centre grading structure that material constituted from fine to coarse from two outer surfaces.Other lignocellulosic materials that sawdust that is added or form are similar to sawdust mainly is distributed in the top layer and time top layer of compound shive particieboard.
The primary raw material shive that constitutes compound shive particieboard is the qualified hards after dust, fiber and snippings are cleaned, removed to process, and its form is a strip flat and watt shape, and length is 1～25mm, and width is 0.8～2mm, and thickness is in 0.3～0.8mm.
Other lignocellulosic materials of the approximate sawdust of sawdust that adds or form, its form is not a powdery, but is fibrous more tiny wood fibre.
Manufacture method of the present invention realizes by following steps:
1. at first shive is screened, removes dust and fiber, through its dust of shive after the screening and fiber content should be controlled at ten thousand respectively/in.
2. other lignocellulosic materials that in through the shive after the screening, directly adds the approximate sawdust of sawdust or form, and after pneumatic separation is removed snippings and other foreign material, adopt convection type drying or direct contact type drying means dried material, the moisture content of dry back material should be controlled at 2～3%.
3. dried material is carried out pneumatic separation, be divided into top layer material and core layer material, table, core material ratio are 3: 7, the overwhelming majority of other lignocellulosic materials of the approximate sawdust of sawdust or form and more tiny shive enter the top layer material, and thicker sawdust or other lignocellulosic materials and thicker shive enter core layer material.
4. be that 63% low-poison urea-formaldehyde resin adhesive adds that waterproofing agent, curing agent, buffer stir with solids content,, also can add fire retardant, make table, sandwich layer mixed glue solution respectively according to the requirement of product purpose.
5. according to table, core material proportioning, material and mixed glue solution are carried out the proportioning metering respectively and stir.
6. after the table after the glue mixing, core layer material being sent into the airflow pavement machine and fully mixing, carry out airflow pavement; Respectively there is one group of air grid group to blowing the mat formation both sides of feed opening, fines is layered on two outer surfaces of slab with the thickness weight of assurance, in the middle of coarse fodder is layered on, thereby obtains grading structure according to material, and the uniformity of assurance panel density, and then the uniformity of assurance physical and mechanical property.
7. it is hot-forming the slab of completing to be sent into hot press.
8. also can other lignocellulosic materials of sawdust or the approximate sawdust of form is dry separately, when the applying glue proportioning, be metered into.
9. the lignocellulosic materials of the approximate sawdust of sawdust or form, only get during actual production a kind of, to simplify technology.
The compound shive particieboard made from said method can be widely used in height, middle-grade furniture, building, house and car and boat finishing.
The present invention has the following advantages compared with the prior art:
1. the general character that has timber, is organized fine and closely wovenly, indeformable at light weight, can saw easily, digs, follows closely, bores, engraves, mills, operation such as engraving.
2. the surface quality of sheet material is good, fine and closely woven smooth, and the surface quality after sanding can reach existing national standard high-class product level, can directly carry out the facing operation of various coverlay materials.
3. the free formaldehyde release of sheet material has reached German E1 step standard below 10mg/100g, can be directly used in interior decoration without hiding.
4. the physical and mechanical property of sheet material is better than the existing national standard of particieboard.The physical and mechanical property control value such as the following table of product among the embodiment 1 and GB:
The 16 millimeters thick particieboard physical and mechanical property tables of comparisons
| Test event | Unit | The GB high-class product | Compound shive particieboard | |
| Moisture content | ????％ | ????5.0～11.0 | ????5.5 | |
| Density | ????g/cm3 | ????0.50～0.85 | ????0.636 | |
| MOR | ????MPa | ????≥15.0 | ????22.26 | |
| Thickness swelling rate | ????％ | ????≤8.0 | ????3.29 | |
| Internal bond strength | ????MPa | ????≥0.35 | ????0.49 | |
| Nail-holding ability | The vertical panel face | ????N | ????≥1100 | ????1846 |
| The parallel-plate face | ????N | ????≥800 | ????1285 | |
| Free formaldehyde release | ??mg/100g | ????≤30 | ????7 | |
5. with low cost with the compound shive particieboard of the method production, have the stronger market competitiveness.
The present invention can be further specified by following embodiment.
Fig. 1 is typical process flow figure of the present invention.
Embodiment 1
With remove fiber and dust moisture content after screening is 13% shive 85% (by weight), moisture content is 50% sawdust 15%, continuous feeding is removed snippings and other foreign material through airflow separator, sending into countercurrent drier, to be dried to moisture content be 2.8%, sub-elect table, core layer material through airflow separator, sawdust and more tiny shive are the top layer material, and thicker sawdust and thicker shive are core layer material; Modulate sandwich layer mixed glue solution of forming by low-poison urea-formaldehyde resin adhesive (solids content 63%), paraffin wax emulsions, ammonium chloride etc. and the top layer mixed glue solution of forming by urea-formaldehyde resin adhesive, paraffin wax emulsions, ammonium chloride, six methines, four ammoniums etc. simultaneously; The top layer resin added accounts for 12% of material gross weight by the Lauxite oven dry weight, sandwich layer accounts for 10% ratio of weight of material in the Lauxite oven dry weight, applying glue and material stir respectively, send into mat formation into uniform slab after the airflow pavement machine mixes after, it is hot-forming to send into hot press again.
Embodiment 2
Earlier the beans bar is cut into hay cutter and send into sander after the length within 5～10mm to be polished into fibrous particle standby.With remove fiber and dust moisture content be 13% shive by weight 87%, moisture content is 14% beans bar particle 13%, continuous feeding sub-elects snippings and other foreign material through airflow separator, send into countercurrent drier and be dried to moisture content 2.5%, go out table, core layer material through pneumatic separation, thicker shive enters core layer material, and polishing back beans bar and more tiny shive enter the top layer material.Simultaneously, with sandwich layer mixed glue solution of forming by low-poison urea-formaldehyde resin adhesive (solids content 63%), paraffin wax emulsions, ammonium chloride etc. that modulates and the top layer mixed glue solution of forming by urea-formaldehyde resin adhesive, paraffin wax emulsions, ammonium chloride, six methines, four ammoniums, the top layer resin added accounts for 12% of weight of material by the Lauxite oven dry weight, the sandwich layer resin added accounts for 10% ratio of weight of material in the Lauxite oven dry weight, applying glue and stir respectively with material, send into mat formation into uniform slab after the airflow pavement machine mixes after, it is hot-forming to send into hot press again.
The unit pressure of hot press is controlled between 2.8～3.4MPa;
The hot pressing temperature of hot press is controlled between 185～195 ℃;
Hot pressing time determines that according to thickness of slab the hot pressing time scope of different thicknesss of slab is as follows:
| Thickness of slab mm | Hot pressing time min |
| ?8—12 | ????3—4 |
| ?13—16 | ????4—5 |
| ?17—22 | ????5—7 |
Claims (4)
1. compound shive particieboard, comprise the grading structure that the section be made up of shive and adhesive etc. constitutes to centre material from fine to coarse from two outer surfaces, it is characterized in that also adding in the material lignocellulosic materials of the approximate sawdust of form that sawdust or reed, tobacco rod, beans bar, waste of flax and eggplant bar etc. make, the above-mentioned material of adding mainly is distributed in the top layer or the inferior top layer of compound shive particieboard.
2. particieboard according to claim 1 is characterized in that the lignocellulosic materials that the sawdust that adds or form are similar to sawdust accounts for 5～10% of gross weight.
3. the manufacture method of a compound shive particieboard, mainly be that shive is cleaned (removing foreign material such as fiber, dust, snippings), drying, sorting, applying glue, airflow pavement slab, hot-forming, it is characterized in that before moulding, mainly may further comprise the steps:
The material matching of a. compound shive particieboard:
Shive accounts for 74～83% of gross weight,
The lignocellulosic materials that sawdust or form are similar to sawdust accounts for 5～10% of gross weight,
Required other auxiliary chemical raw materials of adhesive and technology accounts for 11.0～14.5% of gross weight,
Waterproofing agent accounts for 1.0～1.5% of gross weight,
B. sawdust need not to handle direct adding through in the qualified hards after cleaning and shive drying, sorting, applying glue, airflow pavement together, and is hot-forming,
C. after waste of flax, eggplant bar and tobacco rod being cut into the tablet that length is 10mm earlier, row adds after pulverizing, polishing again,
D. after reed being rolled with breaking machine earlier, polish after cutting into the length of 10mm again,
E. pulverize, polish after the beans bar directly being cut into 10mm length.
4. particieboard manufacture method according to claim 3, it is characterized in that for obtaining accurate proportioning, after also can the independent drying of other lignocellulosic materials, when applying glue, directly be added in the material of top layer by the accurate measurement proportioning with the approximate sawdust of sawdust or form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93114868 CN1114927A (en) | 1993-11-13 | 1993-11-13 | Compound flax leftover-shaving board and its manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93114868 CN1114927A (en) | 1993-11-13 | 1993-11-13 | Compound flax leftover-shaving board and its manufacture method |
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| Publication Number | Publication Date |
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| CN1114927A true CN1114927A (en) | 1996-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 93114868 Pending CN1114927A (en) | 1993-11-13 | 1993-11-13 | Compound flax leftover-shaving board and its manufacture method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056330C (en) * | 1997-03-03 | 2000-09-13 | 安久维 | Medium-density fibreboard producing method and product |
| CN102059907A (en) * | 2010-10-08 | 2011-05-18 | 北京林业大学 | Multi-level wood laminated veneer art relief and manufacturing method thereof |
| CN102218758A (en) * | 2011-04-07 | 2011-10-19 | 西南林业大学 | High-strength light plate material and manufacture method thereof |
| CN102400421A (en) * | 2011-11-10 | 2012-04-04 | 福建农林大学 | Tea stem handicraft and manufacturing method thereof |
| CN103909556A (en) * | 2013-01-08 | 2014-07-09 | 安吉福盛竹纤维板有限公司 | Preparation method for bamboo saw dust integrated plate block |
| CN103981776A (en) * | 2014-05-09 | 2014-08-13 | 耿忠平 | Low-formaldehyde-emission medium-density board produced by using tobacco wastes and production method of board |
| CN106671216A (en) * | 2016-11-30 | 2017-05-17 | 聊城德晟木业有限公司 | Preparation method for novel low-density, low-cost and high-strength shaving board |
| CN112706251A (en) * | 2020-12-31 | 2021-04-27 | 苏州海洲物资再生利用环保有限公司 | Plate and manufacturing method thereof |
| CN112829036A (en) * | 2020-12-31 | 2021-05-25 | 苏州海洲物资再生利用环保有限公司 | Manufacturing device for producing plates |
| CN113601631A (en) * | 2021-08-17 | 2021-11-05 | 山东鹤洋木业有限公司 | Shaving board capable of being engraved and milled and preparation method thereof |
-
1993
- 1993-11-13 CN CN 93114868 patent/CN1114927A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056330C (en) * | 1997-03-03 | 2000-09-13 | 安久维 | Medium-density fibreboard producing method and product |
| CN102059907A (en) * | 2010-10-08 | 2011-05-18 | 北京林业大学 | Multi-level wood laminated veneer art relief and manufacturing method thereof |
| CN102218758A (en) * | 2011-04-07 | 2011-10-19 | 西南林业大学 | High-strength light plate material and manufacture method thereof |
| CN102218758B (en) * | 2011-04-07 | 2013-02-13 | 西南林业大学 | High-strength light plate material and manufacture method thereof |
| CN102400421A (en) * | 2011-11-10 | 2012-04-04 | 福建农林大学 | Tea stem handicraft and manufacturing method thereof |
| CN102400421B (en) * | 2011-11-10 | 2014-02-19 | 福建农林大学 | Preparation method of tea stalk artware |
| CN103909556A (en) * | 2013-01-08 | 2014-07-09 | 安吉福盛竹纤维板有限公司 | Preparation method for bamboo saw dust integrated plate block |
| CN103981776A (en) * | 2014-05-09 | 2014-08-13 | 耿忠平 | Low-formaldehyde-emission medium-density board produced by using tobacco wastes and production method of board |
| CN106671216A (en) * | 2016-11-30 | 2017-05-17 | 聊城德晟木业有限公司 | Preparation method for novel low-density, low-cost and high-strength shaving board |
| CN112706251A (en) * | 2020-12-31 | 2021-04-27 | 苏州海洲物资再生利用环保有限公司 | Plate and manufacturing method thereof |
| CN112829036A (en) * | 2020-12-31 | 2021-05-25 | 苏州海洲物资再生利用环保有限公司 | Manufacturing device for producing plates |
| CN113601631A (en) * | 2021-08-17 | 2021-11-05 | 山东鹤洋木业有限公司 | Shaving board capable of being engraved and milled and preparation method thereof |
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