CN103568098A - Manufacturing method for aldehyde-free crop straw decorative plates - Google Patents
Manufacturing method for aldehyde-free crop straw decorative plates Download PDFInfo
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Abstract
The invention discloses a manufacturing method for aldehyde-free crop straw decorative plates. The manufacturing method includes 1, grinding coarsely to enable grinded raw materials to pass a screen with mesh size ranging from 10mm to 15mm; 2, drying the raw materials by a dryer to enable moisture content of the raw material to be within 10%-20%; 3, grinding finely, namely regrinding dried raw materials, to enable the grinded raw materials to pass a screen with mesh size ranging from 3mm to 8mm; 4, controlling bulk density of sorted raw materials of finished products to range from 50kg/m<3> to 80kg/m<3>, and controlling ash content of the sorted raw materials of the finished products to range from 15% to 20%; 5, storing the raw material of the finished products in a finished-product bin; 6, weighing the raw materials, and setting weight of each batch of the raw materials to be within 150kg-200kg; 7, stirring the raw materials with glue; 8, performing mechanical paving; 9, prepressing in an interval flat mode, and hot-pressing by a five-layer press; 10, cutting edges and cooling. The manufacturing method has the advantages that simple and convenient process is realized, and industrial production can be realized; the aldehyde-free crop straw decorative plates made of crop straw are pollution-free and low in cost, and accordingly, the problem about the crop straw is solved.
Description
Technical field
What the present invention relates to is a kind of manufacture method without aldehyde agricultural crop straw decorative panel.Belong to wood-based plate and manufacture field.
Background technology
At present; due to the protection of various countries to environment and the forest reserves; progressively restriction adopts timber processing artificial boards; but society is continuing to increase the demand of wood-based plate; various countries all strengthen adopting agricultural crop straw to manufacture the research of wood-based plate, without aldehyde agricultural crop straw decorative panel, are to utilize wheat straw, rice straw, corn stalk, beanstalk etc. for a kind of low-density wood-based plate of raw material manufacture.
Summary of the invention
The object of this invention is to provide a kind of can suitability for industrialized production without aldehyde agricultural crop straw decorative panel method of manufacturing technology.Due to what adopt, be that to take crops wheat straw, rice straw, corn stalk, beanstalk etc. be raw material, so it has effectively solved with timber, manufacture the defect that wood-based plate causes environmental pollution.
Technical solution of the present invention: without the manufacture method of aldehyde agricultural crop straw decorative panel, processing step is:
One, coarse crushing: adopt the mode of hammer type crushing, feeding is even, and the specification of screen cloth is divided according to the size of mesh, and mesh size is at 10mm～15mm; It is that the approaching raw material of moisture content feeds continuously that the input of coarse crushing raw material requires as far as possible; At the oblique belt of feeding, sprinkler head is equipped with at place, when raw material moisture content is low, carries out humidification to a certain degree;
Two, with drying machine, raw material is dried, makes raw material moisture control 10%～20%; Described is dried raw material with drying machine, conduction oil is added to hot-air by heat exchanger, raw material by hot-air after drying box inner drying is by coarse crushing, by adjusting oil temperature, wind-warm syndrome, three parameters of air quantity and adjusting degree and the moisture content that tape speed is controlled raw material drying, in drying machine, adopt the serpentine material conveying guipure of energy speed governing;
Three, fine powder is broken: dried raw material carries out separating twice at this, two screen clothes is installed and is carried out work, and the mesh size of screen cloth is at 3mm～8mm;
Four, raw material sorting: complete by separator, adopt the mode of flow separation, by adjusting the aperture of air door, adjust separated effect, adjust according to concrete sheet material specification and supporting technological requirement, finished product raw material after sorting, bulk density is controlled at 50～80Kg/m
3, the ash content of coal is controlled at 15%～20%;
Five, finished product bin: finished product raw material prepared by pretreatment workshop section stores at this;
Six, raw material is weighed: adopt the mode of weighing in batches, set the weight of every batch of raw material at 150Kg～200Kg;
Seven, poor applying glue is stirred: in glue mixing storehouse, stir, use isocyanates is adhesive, and raw material and glue are mixed, and then sends into the feed bin of mating formation, resin added be set in 2.5%～3.0% of raw material gross weight;
Eight, installation: mechanical type is mated formation, single spreading head, by adjusting the angle of deflector and the rotating speed of feed opening spacing and material casting roller, turning to adjust mat formation form and quality, reaches the requirement of technique;
Nine: precompressed, hot pressing, precompressed adopts batch (-type) concora crush, realizes the predischarge of slab, uses five laminating machinees, hot compression parameters, Temperature Setting is at 150～170 ℃; Hot pressing curve adopts minute two sections of modes of boosting step by step in the section of boosting, and high pressure section pressure is controlled at 90～150bar, and first order pressure is generally 50%～70% of second level pressure, in the high pressure section dwell time in 10s left and right; Then divide four sections of releases step by step, every section of pressure reduction is between 15bar～40bar; Boost and have relatively high expectations with the velocity accuracy of release, be set in 0.5bar～2.5bar/s, between each section, speed is different; When soft board is 8mm, pressing cycle is 180s, and pressing cycle constant is 20s/mm; When soft board is 9mm, pressing cycle is 225s, and pressing cycle constant is 25s/mm;
Ten, cutting edge is cooling: with longitudinal cut-to-size saw and horizontal cut-to-size saw, implement longitudinally, laterally distinguish cutting edge, and then cooling.
Advantage of the present invention: simple process, practicable suitability for industrialized production; Adopt agricultural crop straw be raw material manufacture without aldehyde agricultural crop straw decorative panel, pollution-free, cost is low, has solved the outlet of agricultural crop straw.
The specific embodiment
Embodiment 1, and without the manufacture method of aldehyde agricultural crop straw decorative panel, its processing step divides:
One, coarse crushing: adopt the mode of hammer type crushing, the mesh size of screen cloth is at 15mm; Feeding is wanted evenly, and it is that the approaching raw material of moisture content feeds continuously that the input of raw material requires as far as possible.At the oblique belt of feeding, sprinkler head is equipped with at place, can when raw material moisture content is low, carry out humidification to a certain degree.
Two, dry: conduction oil adds hot-air by heat exchanger, raw material by hot-air after drying box inner drying is by coarse crushing, can be by adjusting oil temperature (120 ℃), wind-warm syndrome (90 ℃), (100%) three parameter of air quantity and adjusting degree and the moisture content that guipure speed be controlled raw material drying, the serpentine material conveying guipure that in drying machine, employing can speed governing.Finally make raw material moisture control 22%.
Three, fine powder is broken: dried raw material carries out separating twice at this, adopt the mode of hammer type crushing, two screen clothes need to be installed and carry out work, by changing the specification of screen cloth, control construction form and the composition of raw material, the mesh size of screen cloth is at 8mm, the specification of two screen clothes can be different, and concrete collocation will require to determine according to raw material and concrete technology.
Four, raw material sorting: complete by separator, adopt the mode of flow separation, adjust separated effect by adjusting the aperture of air door, adjust according to concrete sheet material specification and supporting technological requirement.Finished product raw material after sorting, bulk density is controlled at 80Kg/m3, and the ash content of coal is controlled at 20%.
Five, finished product bin: finished product raw material prepared by pretreatment workshop section stores at this, only reaches the production of could starting shooting of certain material level main line.
Six, raw material is weighed: adopt the mode of weighing in batches, set the weight of every batch of raw material at 200Kg.
Seven, applying glue is stirred: adopt glue spraying head to carry out applying glue, use isocyanates is adhesive, this glue spraying head is used compressed air complete the atomization of glue and spray, in glue mixing storehouse, stir, making raw material and isocyanates is that adhesive mixes, then send into the feed bin of mating formation, resin added be set in 3.0% of raw material gross weight.
Eight, mechanical type is mated formation, and single spreading head can be adjusted mat formation form and quality by adjust the angle of deflector and the rotating speed of feed opening spacing and material casting roller, turn to etc., reaches the requirement of technique.
Nine, precompressed, hot pressing, precompressed: batch (-type) concora crush, realize the predischarge of slab; Hot pressing: five laminating machinees, hot pressing temperature is at 170 ℃; Hot pressing curve adopts minute two sections of modes of boosting step by step in the section of boosting, and high pressure section pressure is controlled at 150bar, and first order pressure is 70% of second level pressure, in the high pressure section dwell time at 10s; Then divide four sections of releases step by step, every section of pressure reduction is between 40bar; Boost and have relatively high expectations with the velocity accuracy of release, be set in 2.5bar/s, between each section, speed is different; Take 9mm soft board as example,, pressing cycle is 225s, pressing cycle constant is 25s/mm.
Ten, cutting edge is cooling: have longitudinal cut-to-size saw and horizontal each of cut-to-size saw, realize longitudinally, laterally cutting edge, weighing unit is housed after cutting out the horizontal cut-to-size saw of plate, for measuring the weight of plate after cutting edge, and feed back in time master-control room as adjust foundation, finally cooling.
Factory's soft board density range: 500Kg/m
3.
Embodiment 2, and without the manufacture method of aldehyde agricultural crop straw decorative panel, its processing step divides:
One, coarse crushing: adopt the mode of hammer type crushing, the mesh size of screen cloth is at 10mm; Feeding is wanted evenly, and it is that the approaching raw material of moisture content feeds continuously that the input of raw material requires as far as possible.At the oblique belt of feeding, sprinkler head is equipped with at place, can when raw material moisture content is low, carry out humidification to a certain degree.
Two, dry: conduction oil adds hot-air by heat exchanger, raw material by hot-air after drying box inner drying is by coarse crushing, can be by adjusting oil temperature (50 ℃), wind-warm syndrome (40 ℃), (10%) three parameter of air quantity and adjusting degree and the moisture content that guipure speed be controlled raw material drying, the serpentine material conveying guipure that in drying machine, employing can speed governing.Finally make between raw material moisture control 10%.
Three, fine powder is broken: dried raw material carries out separating twice at this, adopt the mode of hammer type crushing, two screen clothes need to be installed and carry out work, by changing the specification of screen cloth, control construction form and the composition of raw material, the mesh size of screen cloth is at 3mm, the specification of two screen clothes can be different, and concrete collocation will require to determine according to raw material and concrete technology.
Four, raw material sorting: complete by separator, adopt the mode of flow separation, adjust separated effect by adjusting the aperture of air door, adjust according to concrete sheet material specification and supporting technological requirement.Finished product raw material after sorting, bulk density is controlled at 50Kg/m
3, the ash content of coal is controlled at 15%.
Five, finished product bin: finished product raw material prepared by pretreatment workshop section stores at this, only reaches the production of could starting shooting of certain material level main line.
Six, raw material is weighed: adopt the mode of weighing in batches, set the weight of every batch of raw material at 150Kg.
Seven, applying glue is stirred: adopt glue spraying head to carry out applying glue, use isocyanates is adhesive, this glue spraying head is used compressed air complete the atomization of glue and spray, in glue mixing storehouse, stir, making raw material and isocyanates is that adhesive mixes, then send into the feed bin of mating formation, resin added be set in 2.5% of raw material gross weight.
Eight, mechanical type is mated formation, and single spreading head can be adjusted mat formation form and quality by adjust the angle of deflector and the rotating speed of feed opening spacing and material casting roller, turn to etc., reaches the requirement of technique.
Nine, precompressed, hot pressing, precompressed: batch (-type) concora crush, realize the predischarge of slab; Hot pressing: five laminating machinees, hot pressing temperature is at 150 ℃; Hot pressing curve adopts minute two sections of modes of boosting step by step in the section of boosting, and high pressure section pressure is controlled at 90bar, and first order pressure is 50% of second level pressure, in the high pressure section dwell time at 11S; Then divide four sections of releases step by step, every section of pressure reduction is between 15bar; Boost and have relatively high expectations with the velocity accuracy of release, be set in 0.5bar/s, between each section, speed is different; Take 8mm soft board as example,, pressing cycle is 180s, pressing cycle constant is 20s/mm.
Ten, cutting edge is cooling: have longitudinal cut-to-size saw and horizontal each of cut-to-size saw, realize longitudinally, laterally cutting edge, weighing unit is housed after cutting out the horizontal cut-to-size saw of plate, for measuring the weight of plate after cutting edge, and feed back in time master-control room as adjust foundation, finally cooling.
The soft board density range 340Kg/m of factory
3.
Although the present invention is described by reference to preferred embodiment,, those of ordinary skills should understand; can be not limited to the description of above-described embodiment; in the scope of claims, can do the various variations in form and details, within all belonging to protection scope of the present invention.
Claims (1)
1. without the manufacture method of aldehyde agricultural crop straw decorative panel, described soft board is 8mm or 9mm, it is characterized in that: its processing step is:
One, coarse crushing: adopt the mode of hammer type crushing, feeding is even, and the specification of screen cloth is divided according to the size of mesh, and mesh size is at 10mm～15mm; It is that the approaching raw material of moisture content feeds continuously that the input of coarse crushing raw material requires as far as possible; At the oblique belt of feeding, sprinkler head is equipped with at place, when raw material moisture content is low, carries out humidification to a certain degree;
Two, with drying machine, raw material is dried, makes raw material moisture control 10%～22%; Described is dried raw material with drying machine, conduction oil is added to hot-air by heat exchanger, raw material by hot-air after drying box inner drying is by coarse crushing, by adjusting oil temperature, wind-warm syndrome, three parameters of air quantity and compromise network tape speed, control degree and the moisture content of raw material drying, in drying machine, adopt the serpentine material conveying guipure of energy speed governing;
Three, fine powder is broken: dried raw material carries out separating twice at this, two screen clothes is installed and is carried out work, and the mesh size of screen cloth is at 3mm～8mm;
Four, raw material sorting: complete by separator, adopt the mode of flow separation, by adjusting the aperture of air door, adjust separated effect, adjust according to concrete sheet material specification and supporting technological requirement, finished product raw material after sorting, bulk density is controlled at 50～80Kg/m
3, the ash content of coal is controlled at 15%～20%;
Five, finished product bin: finished product raw material prepared by pretreatment workshop section stores at this;
Six, raw material is weighed: adopt the mode of weighing in batches, set the weight of every batch of raw material at 150Kg～200Kg;
Seven, poor applying glue is stirred: in glue mixing storehouse, stir, use isocyanates is adhesive, and raw material and glue are mixed, and then sends into the feed bin of mating formation, resin added be set in 2.5%～3.0% of raw material gross weight;
Eight, installation: mechanical type is mated formation, single spreading head, by adjusting the angle of deflector and the rotating speed of feed opening spacing and material casting roller, turning to adjust mat formation form and quality, reaches the requirement of technique;
Nine: precompressed, hot pressing: precompressed adopts batch (-type) concora crush, realizes the predischarge of slab; Hot pressing adopts five laminating machinees, and hot compression parameters is as follows:
Temperature Setting is at 150～170 ℃; Hot pressing curve adopts minute two sections of modes of boosting step by step in the section of boosting, and high pressure section pressure is controlled at 90～150bar, and first order pressure is 50%～70% of second level pressure, in the high pressure section dwell time in 10s left and right; Then divide four sections of releases step by step, every section of pressure reduction is between 15bar～40bar; Boost and have relatively high expectations with the velocity accuracy of release, be set in 0.5bar～2.5bar/s, between each section, speed is different; When soft board is 8mm, pressing cycle is 180s, and pressing cycle constant is 20s/mm; When soft board is 9mm, pressing cycle is 225s, and pressing cycle constant is 25s/mm;
Ten, cutting edge is cooling: with longitudinal cut-to-size saw and horizontal cut-to-size saw, implement longitudinally, laterally distinguish cutting edge, and then cooling.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104385424A (en) * | 2014-09-23 | 2015-03-04 | 万华生态板业研究设计（烟台）有限公司 | Crop straw manmade board and production method thereof |
| CN109049263A (en) * | 2018-10-18 | 2018-12-21 | 上海景新信息科技有限公司 | A kind of crops stalk mixes the manufacturing method of Formaldehyde Free Wood-based Panel processed |
| CN109093815A (en) * | 2018-10-18 | 2018-12-28 | 李�杰 | A kind of technique increasing Formaldehyde Free Wood-based Panel Prepressing intension using polyurethane stick |
| CN109227860A (en) * | 2018-10-18 | 2019-01-18 | 李�杰 | A kind of technique increasing Formaldehyde Free Wood-based Panel Prepressing intension using hot melt adhesive |
| CN109227859A (en) * | 2018-10-18 | 2019-01-18 | 上海景新信息科技有限公司 | A kind of manufacturing method of cotton stalk Formaldehyde Free Wood-based Panel |
| CN109483686A (en) * | 2018-10-18 | 2019-03-19 | 上海景新信息科技有限公司 | A kind of manufacturing method of anesthesia stem Formaldehyde Free Wood-based Panel |
| CN109702845A (en) * | 2018-11-29 | 2019-05-03 | 南京林业大学 | A kind of low-density is without glue stalk board, preparation method and applications |
| CN110094029A (en) * | 2018-01-30 | 2019-08-06 | 上海派沃建筑装饰设计工程有限公司 | Decoration panel used in a kind of decorations and preparation method thereof |
| CN110313315A (en) * | 2018-03-29 | 2019-10-11 | 万华禾香板业(湖北)有限责任公司 | A kind of stalk stock method and system |
| CN114474264A (en) * | 2022-02-07 | 2022-05-13 | 来宾市永典木业有限公司 | Preparation method of multilayer plywood |
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| CN110313315A (en) * | 2018-03-29 | 2019-10-11 | 万华禾香板业(湖北)有限责任公司 | A kind of stalk stock method and system |
| CN109049263A (en) * | 2018-10-18 | 2018-12-21 | 上海景新信息科技有限公司 | A kind of crops stalk mixes the manufacturing method of Formaldehyde Free Wood-based Panel processed |
| CN109093815A (en) * | 2018-10-18 | 2018-12-28 | 李�杰 | A kind of technique increasing Formaldehyde Free Wood-based Panel Prepressing intension using polyurethane stick |
| CN109227860A (en) * | 2018-10-18 | 2019-01-18 | 李�杰 | A kind of technique increasing Formaldehyde Free Wood-based Panel Prepressing intension using hot melt adhesive |
| CN109227859A (en) * | 2018-10-18 | 2019-01-18 | 上海景新信息科技有限公司 | A kind of manufacturing method of cotton stalk Formaldehyde Free Wood-based Panel |
| CN109483686A (en) * | 2018-10-18 | 2019-03-19 | 上海景新信息科技有限公司 | A kind of manufacturing method of anesthesia stem Formaldehyde Free Wood-based Panel |
| CN109702845A (en) * | 2018-11-29 | 2019-05-03 | 南京林业大学 | A kind of low-density is without glue stalk board, preparation method and applications |
| CN109702845B (en) * | 2018-11-29 | 2022-03-29 | 南京林业大学 | Low-density glue-free straw board, preparation method and application thereof |
| CN114474264A (en) * | 2022-02-07 | 2022-05-13 | 来宾市永典木业有限公司 | Preparation method of multilayer plywood |
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Application publication date: 20140212 |