CN105171890A - Shaving board manufacturing method - Google Patents
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- CN105171890A CN105171890A CN201510494274.5A CN201510494274A CN105171890A CN 105171890 A CN105171890 A CN 105171890A CN 201510494274 A CN201510494274 A CN 201510494274A CN 105171890 A CN105171890 A CN 105171890A
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Abstract
A shaving board manufacturing method includes the following steps of (1) cutting-off and sorting, (2) shaving preparation and classification, (3) shaving mixing, (4) sizing, (5) laying, (6) hot pressing and (7) after-treatment. Shaving boards are manufactured through puelia production. Compared with the prior art, the method has the advantages that (1) raw materials are widely used, puelia can be used independently for board manufacturing and can be mixed with other raw materials for board manufacturing, the application field of the puelia is widened, the problems of the deficiency and uncertainty of non-wood shaving board raw materials are solved, the design scale of a single production is enlarged, and production cost can be reduced; (2) various raw materials are precisely mixed through independent equipment, and the control level of the production line can be improved; (3) puelia shaving guarantees the uniformity and consistency of fibers by means of a smashing and precise grinding two-stage manufacturing mode, and the product yield is increased and subsequent processing performance is improved; (4) by means of distribution of the overall technology and equipment, the problem caused when puelia is applied to industrialization of board manufacturing is solved.
Description
Technical field
The present invention relates to a kind of huge bacterium grass application to expand, more relate to a kind of preparation method of Chipboard.
Background technology
In the past, huge bacterium grass mainly utilizes to be produced base-material and animal at edible fungi and supports and plant in feed, and along with wideling popularize and the quick industry characteristics of huge bacterium grass of huge bacterium grass, every per mu yield can reach more than 20 tons.Its huge production capacity neither the demand of edible mushroom base-material and animal feed can digest, and must find new digestion growth point.
At present, China is Wood-based Panel Production base maximum in the world and exporting country, every year to the demand of the timber output considerably beyond timber.Start progressively to carry out banning deforestation in country in 2015, the imbalance between supply and demand of summer wood will certainly be added.And to use non-wood material to produce sheet material at present; all exist because of material recall scope large and should not purchase on a large scale, material recall seasonal strong, by factors such as such environmental effects during purchase season are larger; cause material quality unstable, acquisition cost is large and cause production cannot scale.And the huge production capacity of huge bacterium grass and belong to season property crop more than a year, its feature of gathering at any time just in time can make up the deficiency that non-wood material produces sheet material raw material supplying.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the above-mentioned defect that prior art exists, provides a kind of preparation method of Chipboard.
The technical solution adopted for the present invention to solve the technical problems is, a kind of preparation method of Chipboard, comprises the following steps:
(1) cut-out and sorting: huge bacterium grass is cut into the element length that length is 5 ~ 50mm with chaffcutter, impurity in huge bacterium grass and tiny leaf is sub-elected according to weight grading principle, and drying and bacteria removing is carried out at temperature 100 ~ 200 DEG C, by its moisture control 11 ~ 24% between (preferably 14 ~ 18%, more preferably 15%);
(2) wood shavings preparation and classification: dried for step (1) huge bacterium grass is finish-ground to wood shavings state by pulverizer meal, ring type sander, and is categorized into huge bacterium grass top layer wood shavings and sandwich layer wood shavings according to shaving shape size by classifying screen;
(3) wood shavings mixing: adopt and measure transporter accurately and be mixed into 10 ~ 50% in the wood shavings of huge bacterium grass top layer (preferably 50%) ratio does not wait, form non-wood material consistent with moisture content; (preferably 40 ~ 60%, more preferably 50%) ratio does not wait wood material and non-wood material wood shavings to be mixed into 10 ~ 100% in huge bacterium grass sandwich layer wood shavings; Carry out homogeneous further by drying machine to huge bacterium grass sandwich layer wood shavings or mixed material, top layer wood shavings moisture content 10 ~ 24% (preferably 13 ~ 18%, more preferably 15%), sandwich layer wood shavings moisture content 5 ~ 14% (preferably 7 ~ 11%, more preferably 9%);
(4) applying glue: adopt glue mixing cylinder and high speed centrifugal atomization device, the top layer wood shavings, the sandwich layer wood shavings Homogeneous phase mixing that respectively adhesive and step (3) are mixed, the resin added of top layer shavings raw material is 3 ~ 6% (preferably 5%) of wood shavings weight, and the resin added of sandwich layer shavings raw material is 2.5 ~ 4.5% (preferably 3.8%) of wood shavings weight;
(5) mat formation: top layer wood shavings good for step (4) applying glue and sandwich layer wood shavings are mated formation, top layer wood shavings are used in two top layers of slab, and adopt classification spreading machine to carry out, under the control of metering transporter, two top layer weight respectively account for 50%; Sandwich layer wood shavings are used in the sandwich layer of slab, adopt mechanical spreading machine to carry out; Plate Bear-grudge after mating formation through precompressed, its precompressed rate control 30% ~ 60%, rebound degree is 10 ~ 30%;
(6) hot pressing: the slab that step (5) paves is delivered to the sheet material that multi-layer flat press or continuous flat press carry out being hot pressed into specific thickness, its hot pressing temperature is 175 ~ 240 DEG C (preferably 185 ~ 195 DEG C), hot pressing pressure 3 ~ 4MPa (preferably 3.2 ~ 3.9MPa, more preferably 3.7MPa), pressing cycle 12 ~ 20s/mm (preferably 14 ~ 17s/mm, more preferably 15s/mm);
(7) post-processing step: the sheet material good to step (6) hot pressing carries out that buck, cutting edge, cooling are homogeneous, sanding, completes the appearance quality treatment of product;
Namely Chipboard is prepared from.
Further, described adhesive is MDI glue, i.e. methyl diphenylene diisocyanate adhesive and modified adhesive.
Further, in described step (5), in order to prevent pressing plate, backing plate haftplatte, uniform remover smeared by described pressing plate, backing plate or slab.
Further, other raw material described is one or more in timber, wheat straw waste, rice straw, cotton stalk, bamboo stalk and reed straw wood shavings.
Compared with prior art, the present invention has the following advantages:
(1) raw material uses extensively, and huge bacterium grass can making sheet separately, also can with other mixed raw material plate, not only expand huge bacterium grass application, also solve non-wood particleboard insufficient raw material and uncertain problem, expand the design scale of wall scroll production line, can production cost be reduced;
(2) realized the accurate mixing of various raw material by independent equipment, production line level of control can be promoted;
(3) huge bacterium grass wood shavings adopt and pulverize and fine grinding secondary preparation method, ensure that uniformity and the uniformity of fiber, improve product percent of pass and properties for follow;
(4) by the layout to integrated artistic and equipment, solve huge bacterium grass and be applied to board making industrial problems;
(5) after testing, in its plate, density variation, internal bond strength, table bond strength, MOR, elastic modelling quantity, supine human body, thickness swelling rate, the whole moisture content of plate have all exceeded particieboard standard GB/T/T4897.1-2003 requirement; Free formaldehyde presses GB/T17657-1999 test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels, and result is not measured, and burst size of methanal reaches U.S. CARB and exempts authentication requesting without aldehyde.
Accompanying drawing explanation
Fig. 1 is the preparation flow figure of one embodiment of the invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention will be further described.
Embodiment 1
Top layer wood shavings all adopt the preparation of huge bacterium grass, are mixed into the cotton stalk wood shavings of 40% in sandwich layer wood shavings.
(1) to cut off and sorting: the element length huge bacterium grass 800kg being cut into length 5 ~ 50mm through chaffcutter, sub-elect impurity in huge bacterium grass and tiny leaf according to weight grading principle.And at temperature 100 ~ 200 DEG C, carry out drying and bacteria removing, by its moisture control between 20 ~ 22%.
(2) wood shavings preparation: the huge bacterium grass after cutting off is entered pulverizer just powder, and then enters ring type sander fine grinding, be then divided into the top layer wood shavings of 63% and the sandwich layer wood shavings of 37% through classifying screen.By redrying, top layer wood shavings moisture content 20%, sandwich layer wood shavings moisture content 7.0%.
(3) applying glue: respectively applying glue is carried out to top layer wood shavings and sandwich layer planeization
First allow the huge bacterium grass wood shavings of sandwich layer and cotton stalk wood shavings measure transporter by belt measure, and mixing and stirring, buffer bin before feeding applying glue.The weight of then measuring transporter, electronic belt scale his-and-hers watches, sandwich layer wood shavings respectively by belt is measured, by PLC control centre, complete the accurately supply automatically of MDI, the MDI Homogeneous phase mixing that realization table, sandwich layer wood shavings throw away with the centrifugal atomizer of High Rotation Speed in airtight cylinder.Top layer wood shavings resin added is 4.5% of wood shavings weight, and sandwich layer wood shavings resin added is 3.5% of wood shavings weight.
(4) mat formation: the wood shavings having executed glue, mating formation of 50% top layer wood shavings is completed by first classification head of mating formation, then complete mating formation of whole sandwich layer wood shavings by mechanical spreading machine, then complete mating formation of remaining 50% top layer wood shavings with second classification head of mating formation.Slab precompressed rate control 36%, rebound degree is 30%.In order to prevent haftplatte, pressing plate, pad surfaces regularly should be coated with and spread uniform remover; The backing plate of mating formation is recycled by belt conveyer loopback.
(5) hot pressing: the slab after mating formation carries out hot pressing, adopts multidaylight press.In order to prevent pressing plate haftplatte, top board layer should be coated with spreads uniform remover, hot pressing temperature 240 DEG C, hot pressing pressure 3.2MPa, pressing cycle 16 seconds/millimeter;
(6) post processing: lowered the temperature by sheet material buck, cutting edge is of a size of 1220mm × 2440mm, cooling stacking carries out sanding, detects packaging process after 48 hours;
According to particieboard standard GB/T/T4897.1-2003 requirement; According to GB/T17657-1999 test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels, sheet material property indices is as follows:
Thickness: 18mm;
Density: 712kg/m
3;
Density variation in plate :+4.3% ,-3.8%;
Internal bond strength: 0.46Mpa;
Table bond strength: 1.12Mpa;
MOR: 19.5Mpa;
Elastic modelling quantity: 2080Mpa;
Supine human body: plate face 1180N, edges of boards 800N;
2h thickness swelling rate: 3.4%;
The whole moisture content of plate: 4.9%;
Burst size of methanal: do not measure.
Embodiment 2
Be mixed into the wheat straw raw material of 30% in the wood shavings of top layer, sandwich layer wood shavings all adopt wood particle.
(1) cut-out and sorting: the element length huge bacterium grass 350kg being cut into length 5 ~ 50mm through chaffcutter, impurity in huge bacterium grass and tiny leaf is sub-elected according to weight grading principle, and at temperature 100 ~ 200 DEG C, carry out drying and bacteria removing, by its moisture control between 11 ~ 13%;
(2) wood shavings preparation: the huge bacterium grass after cutting off is entered pulverizer just powder, and then enters ring type sander fine grinding, be then divided into the top layer wood shavings of 35% and the sandwich layer wood shavings of 65% through classifying screen.By redrying, top layer wood shavings moisture content 11%, sandwich layer wood shavings moisture content 5%;
(3) applying glue: respectively applying glue is carried out to top layer wood shavings and sandwich layer planeization;
First allow the huge bacterium grass wood shavings in top layer and wheat straw wood shavings measure transporter by belt measure, and mixing and stirring, buffer bin before feeding applying glue.The weight of then measuring transporter, electronic belt scale his-and-hers watches, sandwich layer wood shavings respectively by belt is measured, by PLC control centre, complete the accurately supply automatically of MDI, the MDI Homogeneous phase mixing that realization table, sandwich layer wood shavings throw away with the centrifugal atomizer of High Rotation Speed in airtight cylinder.Top layer wood shavings resin added is 4% of wood shavings weight, and sandwich layer wood shavings resin added is 2.5% of wood shavings weight;
(4) mat formation: the wood shavings having executed glue, mating formation of 50% top layer wood shavings is completed by first classification head of mating formation, then complete mating formation of whole sandwich layer wood shavings by mechanical spreading machine, then complete mating formation of remaining 50% top layer wood shavings with second classification head of mating formation.Slab precompressed rate control 30%, rebound degree is 22% in order to prevent haftplatte, and pressing plate, pad surfaces regularly should be coated with and spread uniform remover; The backing plate of mating formation is recycled by belt conveyer loopback;
(5) hot pressing: the slab after mating formation carries out hot pressing, adopts multidaylight press.In order to prevent pressing plate haftplatte, top board layer should be coated with spreads uniform remover.Hot pressing temperature 175 DEG C, hot pressing pressure 3.0MPa, pressing cycle 14 seconds/millimeter;
(6) post processing: lowered the temperature by sheet material buck, cutting edge is of a size of 1220mm × 2440mm, cooling stacking carries out sanding, detects packaging process after 48 hours.
According to particieboard standard GB/T/T4897.1-2003 requirement; According to GB/T17657-1999 test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels, sheet material property indices is as follows:
Thickness: 18mm;
Density: 692kg/m
3;
Density variation in plate :+4.6% ,-3.9%;
Internal bond strength: 0.41Mpa;
Table bond strength: 1.04MPa;
MOR: 21.7MPa;
Elastic modelling quantity: 2260MPa;
Supine human body: plate face 1170N, edges of boards 800N;
2h thickness swelling rate: 3.1%;
The whole moisture content of plate: 4.4%;
Burst size of methanal: do not measure.
Embodiment 3
Be mixed into the straw wood shavings of 30% in the wood shavings of top layer, in sandwich layer wood shavings, be mixed into the straw wood shavings of 70%.
(1) huge bacterium grass 500kg is cut into the element length of length 5 ~ 50mm through chaffcutter, sub-elect impurity in huge bacterium grass and tiny leaf according to weight grading principle.And at temperature 100 ~ 200 DEG C, carry out drying and bacteria removing, by its moisture control between 24 ~ 26%.
(2) wood shavings preparation: the huge bacterium grass after cutting off is entered pulverizer just powder, and then enters ring type sander fine grinding, be then divided into the top layer wood shavings of 50% and the sandwich layer wood shavings of 50% through classifying screen.By redrying, top layer wood shavings moisture content 24%, sandwich layer wood shavings moisture content 14%.
(3) applying glue: respectively applying glue is carried out to top layer wood shavings and sandwich layer planeization.
First allow the huge bacterium grass wood shavings of table, sandwich layer and straw wood shavings measure transporter respectively by belt measure, and mixing and stirring, buffer bin before feeding applying glue.The weight of then measuring transporter, electronic belt scale his-and-hers watches, sandwich layer wood shavings respectively by belt is measured, by PLC control centre, complete the accurately supply automatically of MDI, the MDI Homogeneous phase mixing that realization table, sandwich layer wood shavings throw away with the centrifugal atomizer of High Rotation Speed in airtight cylinder.Top layer wood shavings resin added is 6% of wood shavings weight, and sandwich layer wood shavings resin added is 4% of wood shavings weight.
(4) mat formation: the wood shavings having executed glue, mating formation of 50% top layer wood shavings is completed by first classification head of mating formation, then complete mating formation of whole sandwich layer wood shavings by mechanical spreading machine, then complete mating formation of remaining 50% top layer wood shavings with second classification head of mating formation.Slab precompressed rate control 60%, rebound degree is 10%.In order to prevent haftplatte, pressing plate, pad surfaces regularly should be coated with and spread uniform remover; The backing plate of mating formation is recycled by belt conveyer loopback.
(5) hot pressing: the slab after mating formation carries out hot pressing, adopts multidaylight press.In order to prevent pressing plate haftplatte, top board layer should be coated with spreads uniform remover.Hot pressing temperature 225 DEG C, hot pressing pressure 4.0MPa, pressing cycle 20 seconds/millimeter.
(6) post processing: lowered the temperature by sheet material buck, cutting edge is of a size of 1220mm × 2440mm, cooling stacking carries out sanding, detects packaging process after 48 hours.
According to particieboard standard GB/T/T4897.1-2003 requirement; According to GB/T17657-1999 test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels, sheet material property indices is as follows:
Thickness: 18mm;
Density: 710kg/m
3;
Density variation in plate :+4.6% ,-4.2%;
Internal bond strength: 0.42MPa;
Table bond strength: 0.96MPa;
MOR: 22.7MPa;
Elastic modelling quantity: 2140MPa;
Supine human body: plate face 1140N, edges of boards 780N;
2h thickness swelling rate: 2.5%;
The whole moisture content of plate: 7.4%;
Burst size of methanal: do not measure.
Embodiment 4: be simultaneously mixed into the reed wood shavings of 50% in top layer wood shavings, sandwich layer wood shavings.
(1) huge bacterium grass 500kg is cut into the element length of length 5 ~ 50mm through chaffcutter, sub-elect impurity in huge bacterium grass and tiny leaf according to weight grading principle.And at temperature 100 ~ 200 DEG C, carry out drying and bacteria removing, by its moisture control between 15 ~ 17%.
(2) wood shavings preparation: the huge bacterium grass after cutting off is entered pulverizer just powder, and then enters ring type sander fine grinding, be then divided into the top layer wood shavings of 50% and the sandwich layer wood shavings of 50% through classifying screen.By redrying, top layer wood shavings moisture content 15%, sandwich layer wood shavings moisture content 9%.
(3) applying glue: respectively applying glue is carried out to top layer wood shavings and sandwich layer planeization.
First allow table, sandwich layer huge bacterium grass wood shavings measure transporter with reed wood shavings by belt respectively measure, and mixing and stirring, buffer bin before feeding applying glue.The weight of then measuring transporter, electronic belt scale his-and-hers watches, sandwich layer wood shavings respectively by belt is measured, by PLC control centre, complete the accurately supply automatically of MDI, the MDI Homogeneous phase mixing that realization table, sandwich layer wood shavings throw away with the centrifugal atomizer of High Rotation Speed in airtight cylinder.Top layer wood shavings resin added is 5% of wood shavings weight, and sandwich layer wood shavings resin added is 3.8% of wood shavings weight.
(4) mat formation: the wood shavings having executed glue, mating formation of 50% top layer wood shavings is completed by first classification head of mating formation, then complete mating formation of whole sandwich layer wood shavings by mechanical spreading machine, then complete mating formation of remaining 50% top layer wood shavings with second classification head of mating formation.Slab precompressed rate control 38%, rebound degree is 21%.In order to prevent haftplatte, pressing plate, pad surfaces regularly should be coated with and spread uniform remover; The backing plate of mating formation is recycled by belt conveyer loopback.
(5) hot pressing: the slab after mating formation carries out hot pressing, adopts multidaylight press.In order to prevent pressing plate haftplatte, top board layer should be coated with spreads uniform remover.Hot pressing temperature 195 DEG C, hot pressing pressure 3.7MPa, pressing cycle 15 seconds/millimeter.
(6) post processing: lowered the temperature by sheet material buck, cutting edge is of a size of 1220mm × 2440mm, cooling stacking carries out sanding, detects packaging process after 48 hours.
According to particieboard standard GB/T/T4897.1-2003 requirement; According to GB/T17657-1999 test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels, sheet material property indices is as follows:
Thickness: 18mm;
Density: 705kg/m
3;
Density variation in plate :+2.6% ,-2.2%;
Internal bond strength: 0.54MPa;
Table bond strength: 1.26MPa;
MOR: 26.7MPa;
Elastic modelling quantity: 2740MPa;
Supine human body: plate face 1210N, edges of boards 910N;
2h thickness swelling rate: 1.7%;
The whole moisture content of plate: 6.4%;
Burst size of methanal: do not measure.
Embodiment 5
Be mixed into the bamboo shaving of 20% in the wood shavings of top layer, in sandwich layer wood shavings, be mixed into the bamboo shaving of 80%.
(1) huge bacterium grass 500kg is cut into the element length of length 5 ~ 50mm through chaffcutter, sub-elect impurity in huge bacterium grass and tiny leaf according to weight grading principle.And at temperature 100 ~ 200 DEG C, carry out drying and bacteria removing, by its moisture control between 13 ~ 15%.
(2) wood shavings preparation: the huge bacterium grass after cutting off is entered pulverizer just powder, and then enters ring type sander fine grinding, be then divided into the top layer wood shavings of 50% and the sandwich layer wood shavings of 50% through classifying screen.By redrying, top layer wood shavings moisture content 13%, sandwich layer wood shavings moisture content 11%.
(3) applying glue: respectively applying glue is carried out to top layer wood shavings and sandwich layer planeization.
First allow the huge bacterium grass wood shavings of table, sandwich layer and bamboo shaving measure transporter respectively by belt measure, and mixing and stirring, buffer bin before feeding applying glue.The weight of then measuring transporter, electronic belt scale his-and-hers watches, sandwich layer wood shavings respectively by belt is measured, by PLC control centre, complete the accurately supply automatically of MDI, the MDI Homogeneous phase mixing that realization table, sandwich layer wood shavings throw away with the centrifugal atomizer of High Rotation Speed in airtight cylinder.Top layer wood shavings resin added is 3% of wood shavings weight, and sandwich layer wood shavings resin added is 3% of wood shavings weight.
(4) mat formation: the wood shavings having executed glue, mating formation of 50% top layer wood shavings is completed by first classification head of mating formation, then complete mating formation of whole sandwich layer wood shavings by mechanical spreading machine, then complete mating formation of remaining 50% top layer wood shavings with second classification head of mating formation.Slab precompressed rate control 39%, rebound degree is 22%.In order to prevent haftplatte, pressing plate, pad surfaces regularly should be coated with and spread uniform remover; The backing plate of mating formation is recycled by belt conveyer loopback.
(5) hot pressing: the slab after mating formation carries out hot pressing, adopts multidaylight press.In order to prevent pressing plate haftplatte, top board layer should be coated with spreads uniform remover.Hot pressing temperature 225 DEG C, hot pressing pressure 4.0MPa, pressing cycle 12 seconds/millimeter.
(6) post processing: lowered the temperature by sheet material buck, cutting edge is of a size of 1220mm × 2440mm, cooling stacking carries out sanding, detects packaging process after 48 hours.
According to particieboard standard GB/T/T4897.1-2003 requirement; According to GB/T17657-1999 test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels, sheet material property indices is as follows:
Thickness: 18mm;
Density: 706kg/m
3;
Density variation in plate :+3.2% ,-2.9%;
Internal bond strength: 0.41MPa;
Table bond strength: 0.95MPa;
MOR: 24.7MPa;
Elastic modelling quantity: 2340MPa;
Supine human body: plate face 1160N, edges of boards 780N;
2h thickness swelling rate: 3.5%;
The whole moisture content of plate: 6.6%;
Burst size of methanal: do not measure.
Claims (10)
1. a preparation method for Chipboard, is characterized in that, comprises the following steps:
(1) cut-out and sorting: huge bacterium grass is cut into the element length that length is 5 ~ 50mm with chaffcutter, impurity in huge bacterium grass and tiny leaf is sub-elected according to weight grading principle, and at temperature 100 ~ 200 DEG C, carry out drying and bacteria removing, by its moisture control between 11 ~ 24%;
(2) wood shavings preparation and classification: dried for step (1) huge bacterium grass is finish-ground to wood shavings state by pulverizer meal, ring type sander, and is categorized into huge bacterium grass top layer wood shavings and sandwich layer wood shavings according to shaving shape size by classifying screen;
(3) wood shavings mixing: 10 ~ 50% ratios do not wait, form non-wood material consistent with moisture content to adopt metering transporter to be accurately mixed in the wood shavings of huge bacterium grass top layer; Be mixed into 10 ~ 100% ratios in huge bacterium grass sandwich layer wood shavings and do not wait wood material and non-wood material wood shavings; Carry out homogeneous further by drying machine to huge bacterium grass sandwich layer wood shavings or mixed material, top layer wood shavings moisture content 10 ~ 24%, sandwich layer wood shavings moisture content 5 ~ 14%;
(4) applying glue: adopt glue mixing cylinder and high speed centrifugal atomization device, the top layer wood shavings, the sandwich layer wood shavings Homogeneous phase mixing that respectively adhesive and step (3) are mixed, the resin added of top layer shavings raw material is 3 ~ 6% of wood shavings weight, and the resin added of sandwich layer shavings raw material is 2.5 ~ 4.5% of wood shavings weight;
(5) mat formation: top layer wood shavings good for step (4) applying glue and sandwich layer wood shavings are mated formation, top layer wood shavings are used in two top layers of slab, and adopt classification spreading machine to carry out, under the control of metering transporter, two top layer weight respectively account for 50%; Sandwich layer wood shavings are used in the sandwich layer of slab, adopt mechanical spreading machine to carry out; Plate Bear-grudge after mating formation through precompressed, its precompressed rate control 30% ~ 60%, rebound degree is 10 ~ 30%;
(6) hot pressing: the slab that step (5) paves is delivered to the sheet material that multi-layer flat press or continuous flat press carry out being hot pressed into specific thickness, its hot pressing temperature is 175 ~ 240 DEG C, hot pressing pressure 3 ~ 4MPa, pressing cycle 12 ~ 20s/mm;
(7) post-processing step: the sheet material good to step (6) hot pressing carries out that buck, cutting edge, cooling are homogeneous, sanding, completes the appearance quality treatment of product;
Namely huge bacterium grass production Chipboard is prepared from.
2. the preparation method of Chipboard according to claim 1, is characterized in that, in described step (1), moisture control is between 14 ~ 18%.
3. the preparation method of Chipboard according to claim 2, is characterized in that, described moisture control is between 15%.
4. the preparation method of Chipboard according to claim 2, it is characterized in that, described step (3), wood shavings mix: adopt metering transporter to be accurately mixed into 0% in the wood shavings of huge bacterium grass top layer, ratio does not wait, form non-wood material consistent with moisture content; Be mixed into 40 ~ 60% in huge bacterium grass sandwich layer wood shavings, ratio does not wait wood material and non-wood material wood shavings; Carry out homogeneous further by drying machine to huge bacterium grass sandwich layer wood shavings or mixed material, top layer wood shavings moisture content 13 ~ 18%, sandwich layer wood shavings moisture content 7 ~ 11%.
5. the preparation method of Chipboard according to claim 4, is characterized in that, is mixed into 50% ratio and does not wait wood material and non-wood material wood shavings in described huge bacterium grass sandwich layer wood shavings; Carry out homogeneous further by drying machine to huge bacterium grass sandwich layer wood shavings or mixed material, top layer wood shavings moisture content 15%, sandwich layer wood shavings moisture content 9%.
6. the preparation method of Chipboard according to claim 2, is characterized in that, in described step (6), hot pressing temperature is 185 ~ 195 DEG C, hot pressing pressure 3.2 ~ 3.9MPa, pressing cycle 14 ~ 17s/mm.
7. the preparation method of Chipboard according to claim 6, is characterized in that, described hot pressing pressure 3.7MPa, pressing cycle 15s/mm.
8. the preparation method of Chipboard according to claim 2, is characterized in that, precompressed rate control 30% ~ 60% in described step (5), and rebound degree is 10 ~ 30%; In order to prevent pressing plate haftplatte, uniform remover smeared by described slab.
9. the preparation method of Chipboard according to claim 1, is characterized in that, described adhesive is MDI glue, i.e. methyl diphenylene diisocyanate adhesive and modified adhesive.
10. the preparation method of Chipboard according to claim 1 and 2, is characterized in that, other raw material described is one or more in timber, wheat straw waste, rice straw, cotton stalk, bamboo stalk and reed straw wood shavings.
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| CN201510494274.5A CN105171890A (en) | 2015-08-13 | 2015-08-13 | Shaving board manufacturing method |
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| CN106363765A (en) * | 2016-09-29 | 2017-02-01 | 阜南县星光工艺品有限公司 | Preparing method of traditional Chinese medicine durable shaving board |
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| CN106738178A (en) * | 2016-12-06 | 2017-05-31 | 阜阳市伟叶家具有限公司 | A kind of particle boards to manufacturing method |
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| CN110605772A (en) * | 2019-10-18 | 2019-12-24 | 盘锦积葭生态板业有限公司 | Low-density reed shaving board and preparation method thereof |
| CN110978165A (en) * | 2019-12-23 | 2020-04-10 | 万华禾香板业（公安县）有限责任公司 | Method and production line for producing board by mixing multiple raw materials |
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| CN115091564A (en) * | 2022-06-24 | 2022-09-23 | 中福海峡(平潭)发展股份有限公司 | Jujun grass shaving board and production method and application thereof |
| WO2022267109A1 (en) * | 2021-06-24 | 2022-12-29 | 中福海峡(平潭)发展股份有限公司 | Juncao fiberboard and preparation method therefor |
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| CN106182315A (en) * | 2016-07-23 | 2016-12-07 | 万华生态板业股份有限公司 | A kind of bamboo perfume (or spice) particieboard and production technology thereof |
| CN106363765A (en) * | 2016-09-29 | 2017-02-01 | 阜南县星光工艺品有限公司 | Preparing method of traditional Chinese medicine durable shaving board |
| CN106541482A (en) * | 2016-09-29 | 2017-03-29 | 阜南县星光工艺品有限公司 | A kind of preparation method of formaldehydeless fire-resistant-chipboard |
| CN106738178A (en) * | 2016-12-06 | 2017-05-31 | 阜阳市伟叶家具有限公司 | A kind of particle boards to manufacturing method |
| CN107471380A (en) * | 2017-08-23 | 2017-12-15 | 北京林业大学 | Laminated particle-board and preparation method thereof |
| CN108162123A (en) * | 2017-12-14 | 2018-06-15 | 万华生态板业(信阳)有限公司 | Particieboard and its production method |
| CN108214807A (en) * | 2018-01-29 | 2018-06-29 | 湖南万华生态板业有限公司 | A kind of production method of no aldehyde particieboard |
| CN108015876A (en) * | 2018-01-29 | 2018-05-11 | 湖南万华生态板业有限公司 | A kind of production method of particieboard |
| CN108115802A (en) * | 2018-01-31 | 2018-06-05 | 湖南万华生态板业有限公司 | A kind of rice husk particieboard |
| CN110216746A (en) * | 2018-03-02 | 2019-09-10 | 万华生态板业股份有限公司 | Wood-based plate comprising the sandwich layer that stalk and various sizes of wooden shavings mix |
| CN108177229A (en) * | 2018-03-08 | 2018-06-19 | 湖南万华生态板业有限公司 | A kind of no aldehyde rice-straw board production system |
| CN109227858A (en) * | 2018-10-10 | 2019-01-18 | 万安绿森木业有限公司 | A kind of manufacturing process of particieboard |
| CN110481068A (en) * | 2019-08-20 | 2019-11-22 | 昆山新世绿环保科技有限公司 | A kind of environmental protection three proofings graphene fibril board assembly line |
| CN110605772A (en) * | 2019-10-18 | 2019-12-24 | 盘锦积葭生态板业有限公司 | Low-density reed shaving board and preparation method thereof |
| CN110978165B (en) * | 2019-12-23 | 2022-03-18 | 万华禾香板业（公安县）有限责任公司 | Method and production line for producing board by mixing multiple raw materials |
| CN110978165A (en) * | 2019-12-23 | 2020-04-10 | 万华禾香板业（公安县）有限责任公司 | Method and production line for producing board by mixing multiple raw materials |
| CN111516088A (en) * | 2020-06-08 | 2020-08-11 | 万华生态板业集成设备有限公司 | Method for preparing shaving board |
| WO2022267109A1 (en) * | 2021-06-24 | 2022-12-29 | 中福海峡(平潭)发展股份有限公司 | Juncao fiberboard and preparation method therefor |
| CN113815084A (en) * | 2021-09-26 | 2021-12-21 | 佳诺威集团股份有限公司 | Raw material treatment method based on moxa board production |
| CN115091564A (en) * | 2022-06-24 | 2022-09-23 | 中福海峡(平潭)发展股份有限公司 | Jujun grass shaving board and production method and application thereof |
| CN115091564B (en) * | 2022-06-24 | 2024-02-06 | 中福海峡(平潭)发展股份有限公司 | Jujun grass shaving board and production method and application thereof |
| CN116604670A (en) * | 2023-05-22 | 2023-08-18 | 广东始兴县华洲木业有限公司 | Composite bamboo board and preparation method thereof |
| CN116604670B (en) * | 2023-05-22 | 2024-02-20 | 广东始兴县华洲木业有限公司 | Composite bamboo board and preparation method thereof |
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