CN102085677A - New process for producing wooden composite material by using waste and used plywood cement templates - Google Patents
New process for producing wooden composite material by using waste and used plywood cement templates Download PDFInfo
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- CN102085677A CN102085677A CN201010555106XA CN201010555106A CN102085677A CN 102085677 A CN102085677 A CN 102085677A CN 201010555106X A CN201010555106X A CN 201010555106XA CN 201010555106 A CN201010555106 A CN 201010555106A CN 102085677 A CN102085677 A CN 102085677A
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Abstract
The invention relates to a technology in the field of composite materials, and discloses a method for producing laminated wood boards, shaving boards and fibre boards by using waste and used plywood cement templates. The method comprises the following steps of: sawing the waste and used plywood cement templates into battens with certain length, width and thickness to serve as the core strips of the laminated wood boards; carrying out lateral cement pressing on the core strips to prepare the board cores of the laminated wood boards; sticking a veneer and thin wood on two surfaces of each board core to prepare the laminated wood boards; manufacturing flaky wood chips with a certain size by using remainders and the plywood cement templates generated when the laminated wood boards are produced; sorting cement and impregnated paper, which affect the production of the fibre boards and the shaving boards, in the wood chips; manufacturing the wood chips into the fibre boards by fibre separation, hot pressing and the like; shaving the wood chips by a shaving machine to prepare wood shavings; and drying, mixing glue, paying and hot pressing to prepare the shaving boards. The method has the technical characteristics that the core strips which can be manufactured to have certain length, width and thickness in the waste and used plywood cement templates are used for producing the laminated wood boards, and other core strips are used for producing the fibre boards or the shaving boards with different densities and thicknesses.
Description
One, technical field
The invention discloses a kind of method of utilizing waste and old glued board cement formwork to produce core-board, particieboard and fiberboard.With waste and old glued board cement formwork cut off to length, the lath of width and thickness, central layer bar as core-board, do not reach the glued board cement formwork of requirement with making in the lath process residue and thickness, adopt wood chipping equipment to make the sheet wood chip of certain size, sub-elect the cement on glued board cement formwork surface and impregnated paper etc. by separator and influence the material that fiberboard and particieboard are produced, make fiberboard or make wood shavings through technologies such as fiber separation, hot pressing through the chipper flaking, drying, glue mixing, mat formation, the method for hot pressing makes particieboard.Its major technique is characterized as: utilize the mid portion of waste and old glued board cement formwork to produce core-board, the fiberboard and the particieboard of other production different densities and thickness.
Two, background technology
Along with development and national economy, increasing to the demand of timber, but the scarcity of timber resources forces people to utilize various raw materials to research and produce composite wooden material, satisfies the deficiency of the needs and the alleviation timber resources in market.Utilizing each waste and old wood to produce composite is emphasis and the research forward position of paying close attention to both at home and abroad.
Glued board cement formwork construction technology is applied one of new technology as ten of the Ministry of Construction, and its use amount is increasing.The years construction practice shows, the glued board cement formwork has advantages such as reduce labor strength, be convenient to construction, be easy to combination, cost is lower, develop the increase that speeds with foreign trade with domestic economy, construction scope increases rapidly, the construction of domestic skyscraper, the demand of the template of building industry is in rising trend, and that the glued board cement formwork has a breadth is big, from heavy and light, the turnover access times are many, be particularly suitable for making large-scale template, construction quality and efficiency of construction increase substantially, and have promoted the production development of plywood form.Along with the consumption increase of glued board cement formwork, the quantity of waste and old glued board cement formwork also sharply increases, and how to utilize these waste and old glued board cement formworks to make it to turn waste into wealth, and it is current reducing environmental pollution, and even research direction from now on.
To can make the batten of certain thickness and width in the waste and old glued board cement formwork as making the core-board material.Other fiber and shavings raw material as producd fibers plate, particieboard not only can make full use of waste and old wood and reduce environmental pollution, and there is structural inconsistency in the timber resources that can alleviate China.
Waste and old glued board cement formwork is through pulverizing, and separates back fiber yield height, form is good, can produce the fiberboard of all thickness and density according to different instructions for uses, and its properties of product are stable, and the high variability of intensity is little, dimensional stability good.Its performance of medium density fibre board (MDF) with adhesive such as Lauxite and the production of waste and old glued board cement formwork can match in excellence or beauty with the medium density fibre board (MDF) of timber production.
The shaving shape that utilizes waste and old glued board cement formwork to make is good, the intensity height, reach the requirement of national particieboard standard with the particieboard performance of adhesive such as Lauxite and the production of waste and old glued board cement formwork, its product can be applicable to fields such as furniture, construction and decoration, packing.
Three, summary of the invention
1. Fa Ming purpose
The objective of the invention is to enlarge utilizing scope and improving use value of waste and old glued board cement formwork.Waste and old wood recycling helps protecting China's wildwood resource and protected the ecological environment and the ecological balance.Utilize the product of urea-formaldehyde resin adhesive production high added value scrap rubber plywood cement formwork.
2. technical scheme
1) waste and old glued board cement formwork is made joiner's preparation method, it is characterized in that its manufacturing technology steps branch:
1. with waste and old glued board cement formwork, being sawn into width is the 15-30mm strip material, amputates or the breakable layer on thickness direction two surfaces of shooting off, and strip material is sawed-off, and its length is not less than 300mm, as the core bar of core-board;
2. the core bar is through the side gluing, and the plate core that it is 8-20mm that assembly becomes the long 2440mm thickness of wide 1220mm adds through the side then and is pressed into the plate core, side moulding pressure 0.3-0.5MPa, temperature 110-140 ℃. Core bar extensible during plate core assembly, joint will suitably stagger at the width and the length direction of plate core during spreading, does not occur a plurality of joints in a partial splice zone;
3. respectively paste one through single spreading on the both sides of plate core, thickness is the rotary cut venner of 1.2-2.5mm, makes blank flat through hot pressing; The glue-spread of veneer is 200-350g/m
2, hot pressing temperature is 100-120 ℃, hot pressing pressure 0.6-1.0MPa, hot pressing time 1.5-4min;
4. blank flat carries out the hot pressing veneer of panel, backboard again through repairing and sanding, and hot pressing temperature is 100-140 ℃, and hot pressing time 30-90s makes core-board.
2) method of waste and old glued board cement formwork producd fibers plate, its processing step is:
1. remaining waste and old glued board cement formwork in the core-board production is made the wood chip of certain-length and width by pulverizer, wood chip is removed cement and impregnated paper impurity in the raw material through mechanical sorting or pneumatic separation method, makes the wood chip that length is 5-60mm;
2. wood chip is transported to the softening 4-8min of boiling in 130-200 ℃ the preheating cylinder, scrap rubber plywood cement formwork wood chip after softening is separated into fibrous material by defibrator, apply respectively in the defibration process≤1.4% waterproofing agent and 9-13% urea-formaldehyde resin adhesive, its addition is the percentage of bone dry fiber quality; Fiber after the separation is dried to whole moisture content≤11% in drying machine, the temperature when dry is according to the first moisture content adjustment of fiber, dry temperature range 100-220 ℃;
3. fiber lay down is dressed up the slab of certain thickness and width, the fiberboard density that hot pressing is made is greater than 0.65g/cm
3Temperature during hot pressing is 180-280 ℃, and the time is 10-60s/mm.
3) waste and old glued board cement formwork is produced the preparation method of particieboard, it is characterized in that its manufacturing technology steps branch:
The wood shavings preparation of 1. waste and old glued board cement formwork: waste and old glued board cement formwork is chipped earlier, and again by the chipper flaking, the wood shavings that obtain through sorting, are removed cement, dust and processing release paper in the wood shavings, make to be suitable for the qualified wood shavings that particieboard is produced; The screening value of wood shavings is the 10-100 order;
2. wood shavings drying machine drying, the whole moisture content of dried wood shavings be controlled at≤and 3%, the particle drying temperature is 105-140 ℃;
3. dried wood shavings add additives such as waterproofing agent, paraffin emulsifier in glue mixing; The applied amount of adhesive is≤12%, and paraffin emulsifier is with being≤0.9%;
4. the wood shavings after the glue mixing are mated formation into density, the uniform slab of thickness through spreading machine, are pressed into particieboard in hot press, and the hot pressing temperature during hot pressing is 130-155 ℃, and hot pressing time is 2.5-12min.
The present invention is optimized in operations such as wood shavings preparation, sorting, drying, glue mixings according to the characteristics of waste and old glued board cement formwork; Manufacture method is simple, and the particieboard cost of making is low, and the particieboard dimensional stability of making is good, the MOR height of plate; The physical and mechanical property of the particieboard of producing with this method arrives the requirement of national particieboard standard.
Four, the specific embodiment
Describe the present invention below in conjunction with example.But given example is not limit in invention.
Embodiment 1:
1. selecting thickness for use is the waste and old glued board cement formwork of 15mm, and it is sawn into width is the 15mm strip material, amputates the layer of original thickness direction two surperficial destroyeds, and the core bar thickness of making is 12mm, and length is 820mm and 410mm;
2. the core bar is through the side gluing, and it is the plate core of 12mm for 2440mm thickness for 1220mm length that assembly becomes width; Side moulding pressure 0.40MPa, 120 ℃ of temperature;
3. respectively pasting one on the both sides of plate core is the rotary cut venner of 2.0mm through single spreading thickness, makes blank flat; The glue-spread of veneer is 300g/m
2, hot pressing temperature is 120 ℃, pressure 0.7MPa, time 2min;
4. respectively paste a veneer at surface, the back side of blank flat, core-board is made in hot pressing, and hot pressing sticker temperature is 130 ℃, hot pressing time 50s.
The performance of core-board is as follows:
Surface bonding strength: 0.72MPa
MOR: 15.4MPa
Dipping stripping performance: 5mm
Embodiment 2:
1. selecting thickness for use is the waste and old glued board cement formwork of 12mm, and it is sawn into width is the 20mm strip material, amputates the layer of original thickness direction two surperficial destroyeds, and the core bar thickness of making is 8mm, and length is 620mm and 310mm;
2. the core bar is through the side gluing, and it is the plate core of 8mm for 2440mm thickness for 1220mm length that assembly becomes width; Side moulding pressure 0.35MPa, 110 ℃ of temperature;
3. respectively pasting one on the both sides of plate core is the rotary cut venner of 2.0mm through single spreading thickness, makes blank flat; The glue-spread of veneer is 250g/m
2, hot pressing temperature is 110 ℃, pressure 0.6MPa, time 2.5min;
4. respectively paste a veneer at surface, the back side of blank flat, core-board is made in hot pressing, and hot pressing sticker temperature is 110 ℃, hot pressing time 70s.
The performance of core-board is as follows:
Surface bonding strength: 0.67MPa
MOR: 15.7MPa
Dipping stripping performance: 7mm
Embodiment 3:
1. pulverizer is smashed waste and old glued board cement formwork, filters out impurity such as silt, impregnated paper, tiny raw material, and the wood chip length that makes is 15-50mm;
2. the softening 7min of boiling in 140 ℃ preheating cylinder is separated into fiber through defibrator; The addition of paraffin is 0.8%, and the addition of adhesive is 11%;
3. fiber is dry under 190 ℃ of conditions, and the whole moisture content of dry back fiber is 10%;
4. the tool spreading machine is mated formation into density, the uniform slab of thickness;
5. the hot press hot pressing temperature is 190 ℃, and hot pressing time is 5min.
The performance of fiberboard is as follows:
Plate thickness: 10mm 10mm
Density: 0.75g/cm
30.80g/cm
3
Internal bond strength: 0.62MPa 0.65MPa
MOR: 32.1MPa 37.6MPa
Elastic modelling quantity: 2977MPa 3104MPa
Embodiment 4:
1. pulverizer is smashed waste and old glued board cement formwork, filters out impurity such as silt, impregnated paper, tiny raw material, and the wood chip length that makes is 9-52mm;
2. the softening 4.5min of boiling in 190 ℃ preheating cylinder is separated into fiber through defibrator; The addition of paraffin is 0.6%, and the addition of adhesive is 12%;
3. fiber is dry under 140 ℃ of conditions, and the whole moisture content of dry back fiber is 9%;
4. the tool spreading machine is mated formation into density, the uniform slab of thickness;
5. the hot press hot pressing temperature is 220 ℃, and hot pressing time is 3.5min.
The performance of fiberboard is as follows:
Plate thickness: 10mm 10mm
Density: 0.75g/cm
30.70g/cm
3
Internal bond strength: 0.61MPa 0.56MPa
MOR: 33.2MPa 27.5MPa
Elastic modelling quantity: 3065MPa 2738MPa
Embodiment 5:
1. waste and old glued board cement formwork is chipped through wood chipping equipment and is made the wood shavings of certain size with the chipper flaking, sub-elects cement, dust, processing release paper and tiny raw material etc., and the screening value that makes wood shavings is the 20-90 order;
2. be 2.5% with particle drying to whole moisture content, baking temperature is 120 ℃;
3. apply 11% Lauxite jelly, 0.5% paraffin emulsifier;
4. to mat formation into density be 0.75g/cm to the wood shavings after the glue mixing
3, 0.70g/cm
3Slab;
5. the slab that paves is made the particieboard that thickness is 10mm through hot press hot pressing, and hot pressing temperature is 140 ℃, and hot pressing time is 5min.
The particieboard performance indications are as follows:
Plate density 0.70g/cm
30.75g/cm
3
Elastic modelling quantity 2197MPa 2559MPa
MOR 12.7MPa 14.0MPa
Internal bond strength 0.62MPa 0.70MPa
Embodiment 6:
1. waste and old glued board cement formwork is chipped through wood chipping equipment and is made the wood shavings of certain size with the chipper flaking, sub-elects cement, dust, processing release paper, and the screening value that makes wood shavings is the 15-80 order;
2. be 2.0% with particle drying to whole moisture content, baking temperature is 110 ℃;
3. apply 10% Lauxite jelly, 0.4% paraffin emulsifier;
4. to mat formation into density be 0.80g/cm to the wood shavings after the glue mixing
3, 0.85g/cm
3Slab;
5. the slab that paves is made the particieboard that thickness is 10mm through hot press hot pressing, and hot pressing temperature is 130 ℃, and hot pressing time is 6min.
The particieboard performance indications are as follows:
Plate density 0.80g/cm
30.85g/cm
3
Elastic modelling quantity 3054MPa 3375MPa
MOR 14.9MPa 17.8MPa
Internal bond strength 0.75MPa 0.82MPa
Claims (3)
1. waste and old glued board cement formwork is made joiner's method, it is characterized in that its manufacturing technology steps branch:
1. with waste and old glued board cement formwork, being sawn into width is the 15-30mm strip material, amputates or the breakable layer on thickness direction two surfaces of shooting off, and strip material is sawed-off, and its length is not less than 300mm, as the core bar of core-board;
2. the core bar is through the side gluing, and the plate core that it is 8-20mm that assembly becomes the long 2440mm thickness of wide 1220mm adds through the side then and is pressed into the plate core, side moulding pressure 0.3-0.5MPa, temperature 110-140 ℃; Core bar extensible during plate core assembly, joint will suitably stagger at the width and the length direction of plate core during spreading, does not occur a plurality of joints in a partial splice zone;
3. respectively paste one through single spreading on the both sides of plate core, thickness is the rotary cut venner of 1.2-2.5mm, makes blank flat through hot pressing; The glue-spread of veneer is 200-350g/m
2, hot pressing temperature is 100-120 ℃, hot pressing pressure 0.6-1.0MPa, hot pressing time 1.5-4min;
4. blank flat carries out the hot pressing veneer of panel, backboard again through repairing and sanding, and hot pressing temperature is 100-140 ℃, and hot pressing time 30-90s makes core-board.
2. the method for waste and old glued board cement formwork producd fibers plate, its processing step is:
1. residue in the core-board production and waste and old glued board cement formwork are made the wood chip of certain-length and width through pulverizer, and wood chip is removed cement and impregnated paper impurity in the raw material through mechanical sorting machine or airflow separator, makes the wood chip that length is 5-60mm;
2. wood chip is transported to the softening 4-8min of boiling in 130-200 ℃ the preheating cylinder, waste and old glued board cement formwork wood chip after softening is separated into fibrous material by defibrator, apply respectively in the defibration process≤1.4% waterproofing agent and the urea-formaldehyde resin adhesive of 9-13%, the addition of waterproofing agent and adhesive is the percentage of bone dry fiber quality; Fiber after the separation is dried to moisture content≤11%, dry temperature 100-220 ℃;
3. fiber lay down is dressed up the slab of certain thickness and width, the fiberboard density that hot pressing is made is greater than 0.65g/cm
3Temperature during hot pressing is 180-280 ℃, and the time is 10-60s/mm.
3. waste and old glued board cement formwork is made the method for particieboard, its step branch:
The wood shavings preparation of 1. waste and old glued board cement formwork: waste and old glued board cement formwork is chipped earlier, and again by the chipper flaking, the wood shavings that obtain are removed cement, dust and processing release paper in the wood shavings through sorting, and making the screening value is 10-100 purpose wood shavings;
2. wood shavings drying, the whole moisture content of dry back wood shavings be controlled at≤and 3%, the particle drying temperature is 105-140 ℃;
3. the glue mixing in glue mixer of dried wood shavings adds waterproofing agent, paraffin emulsifier in the time of glue mixing; The applied amount of adhesive is≤12%, and the applied amount of paraffin emulsifier is≤0.9%, and the applied amount of adhesive and paraffin emulsifier is the percentage of over dry wood shavings quality;
4. the wood shavings after the glue mixing are mated formation into density, the uniform slab of thickness through spreading machine, are pressed into particieboard in hot press, and hot pressing temperature is 130-155 ℃, and hot pressing time is 2.5-12min.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010555106 CN102085677B (en) | 2010-11-23 | 2010-11-23 | New process for producing wooden composite material by using waste and used plywood cement templates |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010555106 CN102085677B (en) | 2010-11-23 | 2010-11-23 | New process for producing wooden composite material by using waste and used plywood cement templates |
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| CN102085677A true CN102085677A (en) | 2011-06-08 |
| CN102085677B CN102085677B (en) | 2013-05-22 |
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| CN 201010555106 Expired - Fee Related CN102085677B (en) | 2010-11-23 | 2010-11-23 | New process for producing wooden composite material by using waste and used plywood cement templates |
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| CN103104088A (en) * | 2013-02-26 | 2013-05-15 | 程进华 | Method for utilizing waste building templates to manufacture regenerated building templates |
| CN103437544A (en) * | 2013-08-26 | 2013-12-11 | 泰州市华丽木业有限公司 | Building template and processing method thereof |
| CN103978745A (en) * | 2014-04-08 | 2014-08-13 | 绍兴一普塑业有限公司 | Composite board produced by using waste building plywood and production method thereof |
| CN104416646A (en) * | 2013-09-11 | 2015-03-18 | 兰州大翔制木股份有限公司 | Recycling production technology of waste building wood template |
| CN104742199A (en) * | 2013-12-29 | 2015-07-01 | 高唐县金如意木业有限公司 | Plywood used for concrete formwork |
| CN104972524A (en) * | 2015-07-07 | 2015-10-14 | 南充市嘉陵区森利木业加工厂 | Recycled solid wood finger-jointed multilayer composite plate |
| CN105538426A (en) * | 2015-12-07 | 2016-05-04 | 李本建 | Method for preparing building and packing templates with waste building templates as raw materials |
| CN106217510A (en) * | 2016-08-22 | 2016-12-14 | 蒙城县华飞缝纫设备制造有限公司 | A kind of utilize the environmental protection sewing machine blank flat preparation technology that discarded plank sheathing is raw material |
| CN109208888A (en) * | 2018-10-22 | 2019-01-15 | 中国二冶集团有限公司 | The waste and old template reuse means of architectural engineering |
| CN110341006A (en) * | 2019-07-04 | 2019-10-18 | 靳庆贤 | A kind of method that novel waste and old building template recycles production core-board |
| CN110774384A (en) * | 2019-11-05 | 2020-02-11 | 苏师大半导体材料与设备研究院(邳州)有限公司 | Preparation process of second-generation plywood |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104088A (en) * | 2013-02-26 | 2013-05-15 | 程进华 | Method for utilizing waste building templates to manufacture regenerated building templates |
| CN103437544A (en) * | 2013-08-26 | 2013-12-11 | 泰州市华丽木业有限公司 | Building template and processing method thereof |
| CN104416646A (en) * | 2013-09-11 | 2015-03-18 | 兰州大翔制木股份有限公司 | Recycling production technology of waste building wood template |
| CN104742199A (en) * | 2013-12-29 | 2015-07-01 | 高唐县金如意木业有限公司 | Plywood used for concrete formwork |
| CN103978745A (en) * | 2014-04-08 | 2014-08-13 | 绍兴一普塑业有限公司 | Composite board produced by using waste building plywood and production method thereof |
| CN104972524A (en) * | 2015-07-07 | 2015-10-14 | 南充市嘉陵区森利木业加工厂 | Recycled solid wood finger-jointed multilayer composite plate |
| CN105538426A (en) * | 2015-12-07 | 2016-05-04 | 李本建 | Method for preparing building and packing templates with waste building templates as raw materials |
| CN106217510A (en) * | 2016-08-22 | 2016-12-14 | 蒙城县华飞缝纫设备制造有限公司 | A kind of utilize the environmental protection sewing machine blank flat preparation technology that discarded plank sheathing is raw material |
| CN109208888A (en) * | 2018-10-22 | 2019-01-15 | 中国二冶集团有限公司 | The waste and old template reuse means of architectural engineering |
| CN110341006A (en) * | 2019-07-04 | 2019-10-18 | 靳庆贤 | A kind of method that novel waste and old building template recycles production core-board |
| CN110774384A (en) * | 2019-11-05 | 2020-02-11 | 苏师大半导体材料与设备研究院(邳州)有限公司 | Preparation process of second-generation plywood |
| CN113635616A (en) * | 2021-06-29 | 2021-11-12 | 刘其哲 | Outdoor board structure taking waste template as base material and production process |
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