CN102152375B - Hollow density board and extruding manufacturing method - Google Patents
Hollow density board and extruding manufacturing method Download PDFInfo
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- CN102152375B CN102152375B CN 201110049150 CN201110049150A CN102152375B CN 102152375 B CN102152375 B CN 102152375B CN 201110049150 CN201110049150 CN 201110049150 CN 201110049150 A CN201110049150 A CN 201110049150A CN 102152375 B CN102152375 B CN 102152375B
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Abstract
The invention relates to a hollow density board manufactured by wood fibre and extruding manufacturing method. The invention is characterized in that a core layer of the hollow density board is provided with a row of hollow round holes; the periphery distances of the holes are 3mm; and the distances between the periphery of the holes and the surface of a plank stuff is 5mm. The extruding manufacturing method comprises the steps as follows: medium density refuse parts treating, smashing, material cabin wetting, screening, drying, coarse material re-smashing, paraffin wax waterproofing agent preparation, cementing compound modulating, screening, material cabin drying, cementing compound and waterproofing agent spraying, material cabin storing, extruding, saw cutting, and stow balancing. Thehollow density board has the advantage of light weight, namely the weight of the hollow density board is half of that of the traditional density board; the impact resistance can reach 28kg/cm2; the bending strength can reach 180kg/ cm2; the stretch strength can reach 18kg/ cm2; the thickness swelling rate of water absorption does not exceed 1.5 percent; and the formaldehyde release amount is 8mg for every 100g of the density board, so that the hollow density board satisfies the environmental protection requirement and belongs to a green product; and a hollow structure has obvious sound and heat insulation effects. The hollow density board has the advantages of high utilization rate, convenience for connection, and simplicity for processing.
Description
Technical field
What the present invention relates to is a kind of hollow density board and extruding autofrettage, belongs to wood-based plate manufacturing technology field.
Background technology
Adopting lumber fibre to make hollow density board does not also report at present both at home and abroad.
Summary of the invention
What the present invention proposed is the hollow density board of a kind of extrusion, its weight only has half of traditional medium-density plate weight, and anti-impact force can reach 28 kilograms every square centimeter, bending strength can reach 180 kilograms every square centimeter, tensile strength can reach 18 kilograms every square centimeter, thickness swelling rate is no more than 1.5%, and per 100 grams of burst size of methanal only are 8 milligrams.
Technical solution of the present invention: hollow density board, its structure are that hollow density board sandwich layer has an emptying heart circular hole, and the peripheral intervals distance of Kong Yukong is 3 millimeters, and the periphery in hole and the surface distance of sheet material are 5 millimeters.
Extrusion is made hollow density board, comprises following processing step:
One, raw material sources: through smashing its lumber fibre of screening, or screen its lumber fibre by the leftover bits and pieces of consolidated floor producer fluting by the saw sapwood of middle density producer;
Two, drying, or is screened its lumber fibre by the leftover bits and pieces of consolidated floor producer fluting and is advanced the cylindrical drier drying through smashing its lumber fibre of screening by the saw sapwood of middle density producer, and baking temperature is at air intake
Vapor (steam) temperature is not less than 140 ℃, remains on 80 ℃ at the EGT of moisture exhausting port, and the particle moisture content of drying machine drying is at 3%-5%;
Three, particle advances vibration screening and knows particulate with the clear large grain husk grain of 3 * 3 mm sieve hole patterns with 0.5 * 0.5 mm sieve hole pattern after dry, is stored in the siccative storehouse through screening qualified particle;
Four, the bulky grain particle after screening is hidden for subsequent use by sending into the siccative warehousing after the desintegrator hammering;
Five, be stored in after drying siccative in the siccative storehouse, should in 8 hours, use, stop production that the siccative in the reply siccative storehouse redeterminates moisture content more than 1 day, stipulate that as surpassing should again be dried to the regulation moisture content can use.
Six, extruded hollow density board blanket glue should meet following index after the medical treatment:
First: (1) 100 ℃ of temperature conditions lower hardening times within 1 minute,
(2) 45 ℃ of temperature conditions lower hardening times at 50-60 minute,
(2) at ambient temperature, viscosity is increased to gradually and can not ends by spray feed, is no less than 2 hours; Second: prescription: weighing scale
(1) urea-formaldehyde resin adhesive is 100 parts,
(2) agramon 10-15 part,
(3) powdery ammonium chloride 0.4-1 part is mixed well with the rear adding that is dissolved in water,
(4) add in right amount hexamethylenetetramine;
Third: rubber material using quantity: over dry material and hard resin ratio are not less than 100: 6, and every cubic metre of blanket is with 70 kilograms of urea-formaldehyde resin adhesives.
Seven, preparation waterproofing agent:
1) waterproofing agent proportioning: weighing scale
(1) commercial wax is 100 parts,
(2) water is 400 parts,
(3) oleic acid is 14 parts,
7 parts of (4) 25% ammonia spirits,
After the mixing lamination must not be arranged, its granular size is 2-3 μ m;
2) weight ratio of over dry material and commercial wax is 100: 0.75, and every cubic metre of hollow density board blanket uses waterproofing agent between the 20-25 kilogram;
Eight, fiber coating waterproofing agent and glue, the operating pressure of air compressor is with 8kg/cm
2, the particle absolute drift after spraying is no more than 12%.
Nine, the fiber after spraying should push continuously, and the temperature of extruder is not less than 170 ℃, and blanking should keep evenly preventing edges of boards plug material, and discharge quantity should adapt with blanket thickness, and the publication speed of different-thickness blanket is by the regulation grasp of table (1):
Table (1)
When temperature is lower than 170 ℃, should lowers accordingly the extruder press speed of a motor vehicle, thereby reach the intensity that guarantees blanket with the abundant curing of guaranteeing resin;
Ten, through the fiber of spraying behind the sizing material, though as fail in 1 hour, to be finished or not by 1 hour and resin has solidified this batch fiber and can not use;
11, two iron plate spacings of extruder must be balanced, the extrusion modling blanket, and its thickness tolerance scope ± 0.5 millimeter, each position bulk density difference of width is no more than 0.05 gram per centimeter; Hollow density board sandwich layer has an emptying heart circular hole, and the peripheral intervals distance of Kong Yukong is 3 millimeters, and the periphery in hole and the surface distance of sheet material are 5 millimeters;
12, the hollow density board blanket saw length of cutting should be according to specifying finished product length add in addition 30 millimeters;
13, the blanket after saw cuts answer four jiaos upright, neatly flatly repeatedly stack built on stilts and be no less than 200 millimeters, every stack height is no more than 1400 millimeters, warehouse-in.
Advantage of the present invention: this hollow density board sandwich layer has an emptying heart circular hole, and the peripheral intervals distance of Kong Yukong is 3 millimeters, and the periphery in hole and the surface distance of sheet material are 5 millimeters, thereby its very light in weight, only have half of traditional medium-density plate weight.But this plate but has good physical property through composite surface, and its anti-impact force can reach 28 kilograms every square centimeter, and bending strength can reach every square centimeter 1
80 kilograms, tensile strength can reach 18 kilograms every square centimeter, and thickness swelling rate is no more than 1.5%.Per 100 grams of burst size of methanal are 8 milligrams only, meet environmental requirement, belong to green product.Simultaneously, because this hollow density board is hollow-core construction, so its sound insulation and effect of heat insulation are fairly obvious.In addition, this hollow density board also has utilization rate height, easy to connect, the processing characteristics such as simple.
Description of drawings
Accompanying drawing 1 is the structural representation of hollow density board.
Among the figure 1 is hollow density board sandwich layer, the 2nd, the hole.
The specific embodiment
Contrast accompanying drawing 1, hollow density plate structure is at hollow density board sandwich layer 1 an emptying heart circular hole 2 to be arranged, and the peripheral intervals distance of Kong Yukong is 3 millimeters, and the periphery in hole and the surface distance of sheet material are 5 millimeters.
Embodiment
Main raw material(s): middle density producer saw sapwood selects qualified lumber fibre through smashing to sift out, and consolidated floor producer fluting leftover bits and pieces filters out qualified lumber fibre.
The adhesive that extruded hollow density board blanket is used is that urine aldehyde tree refers to glue, and urine aldehyde tree refers to the glue indices.The solids content of resin is not less than 56%, resin viscosity 100-200 second (20 degrees centigrade of B3-4 viscosimeters), and free formaldehyde is not more than 1%, and hollow density board blanket is made waterproofing agent with yellow (in vain) paraffin of general industry, and molten point is 50 ℃-58 ℃.
Produce the equipment of slab plate:
Cylinder drying machine: 2034 millimeters of internal diameters, long 9140 millimeters.Rotating speed 6-12 rev/min.
Screening machine: 3 * 3 millimeters of upper sieve apertures, 0.5 * 0.5 millimeter of lower sieve aperture.
Glue mixer.
The Emulsification of Paraffin device.
OK vertical extruder (2), motor power (output): 16 watts, the drift per minute can rush 60-138 time.
Amputating saw (2).
The hollow density blanket of extrusion production stage:
One, middle density producer saw sapwood selects acceptable fiber through smashing to sift out, and consolidated floor producer fluting leftover bits and pieces filters out acceptable fiber.
Two, the medium density fiber particle after smashing advances the cylindrical drier drying, and baking temperature is not less than 140 ℃ in the air intake vapor (steam) temperature, remains on 80 ℃ at the EGT of moisture exhausting port and is as the criterion, and the particle moisture content of drying machine drying is as the criterion at 3%-5%.
Three, after the drying, particle advances vibration screening and knows particulate with the clear large grain husk grain of 3 * 3 mm sieve hole patterns with 0.5 * 0.5 mm sieve hole pattern, is stored in the siccative storehouse through screening qualified particle.
Four, the bulky grain particle after screening is hidden for subsequent use by sending into the siccative warehousing after the desintegrator hammering.
Five, be stored in after drying siccative in the siccative storehouse, should in 8 hours, use, stop production that the siccative in the reply siccative storehouse redeterminates moisture content more than 1 day, stipulate that as surpassing should again be dried to the regulation moisture content can use.
Six, extruded hollow density board blanket glue should meet following index after the medical treatment:
First: (1) 100 ℃ of temperature conditions lower hardening times within 1 minute.
(2) 45 ℃ of temperature conditions lower hardening times at 50-60 minute.
(3) at ambient temperature, viscosity is increased to gradually and can not ends by spray feed, is no less than 2 hours.Second: prescription: weighing scale
100 parts of urea-formaldehyde resin adhesives
Urea (powdery) 10-15 part
Ammonium chloride (powdery) 0.4-1 part (rear adding is mixed well to be dissolved in water)
Add in right amount hexamethylenetetramine by the weather difference.
Third: rubber material using quantity: over dry material and hard resin ratio are not less than 100: 6, and every cubic metre of blanket is used 70 kilograms of urea-formaldehyde resin adhesives approximately.
Seven, the preparation of waterproofing agent:
First waterproofing agent proportioning: weighing scale
After the waterproofing agent preparation lamination must not be arranged, its granular size is about 2-3 μ m;
Second: paraffin consumption: the weight ratio of over dry material and paraffin be 100: 0.75 for standard, every cubic metre of hollow density board blanket with waterproofing agent between the 20-25 kilogram.
Eight, fiber coating waterproofing agent and glue should meet the requirement of consumption, and the operating pressure of air compressor is with 8kg/cm
2Be advisable, the particle absolute drift after spraying is no more than 12% and is as the criterion.
Nine, the temperature that should push continuously extruder of the fiber after spraying is not less than 170 ℃, and blanking should keep evenly preventing edges of boards plug material.Discharge quantity should adapt with blanket thickness, and the publication speed of different-thickness blanket is grasped by the regulation of table (1)).
Table (1)
When temperature is lower than 170 ℃, should lower accordingly the extruder press speed of a motor vehicle, thereby reach the intensity that guarantees blanket with the abundant curing of guaranteeing resin.
Though ten, through the fiber of spraying behind the sizing material as failing in 1 hour, to be finished or not by 1 hour and resin has solidified this batch fiber and can not use.
11, two iron plate spacings of extruder must be balanced, extrusion modling blanket, its thickness should meet the Measurement Allowance of standard code ± 0.5 millimeter, and each position bulk density difference of width is no more than 0.05 gram per centimeter, find gage distortion, the situation that degree of tightness differs must be corrected at any time.Hollow density board sandwich layer has an emptying heart circular hole, and the peripheral intervals distance of Kong Yukong is 3 millimeters, and the periphery in hole and the surface distance of sheet material are 5 millimeters;
12, the hollow density board blanket saw length of cutting should be according to specifying finished product length add in addition 30 millimeters,
13, the blanket after saw cuts answer four jiaos upright, neatly flatly repeatedly stack built on stilts and be no less than 200 millimeters, every stack height is no more than 1400 millimeters, and does the order of classes or grades at school mark and the note upper date of manufacture puts in storage.
Claims (1)
1. the manufacture method of hollow density board is characterized in that the method comprises following processing step:
One, raw material sources: through smashing its lumber fibre of screening, or screen its lumber fibre by the leftover bits and pieces of consolidated floor producer fluting by the saw sapwood of middle density producer;
Two, drying, by the saw sapwood of middle density producer through smashing its lumber fibre of screening, or screen its lumber fibre by the leftover bits and pieces that consolidated floor producer slots and advance the cylindrical drier drying, baking temperature is not less than 140 ℃ in the air intake vapor (steam) temperature, EGT at moisture exhausting port remains on 80 ℃, and the particle moisture content of drying machine drying is at 3%-5%;
Three, dry rear particle advances vibration screening with 3 * 3 mm sieve hole patterns removing bulky grain, removes particulate with 0.5 * 0.5 mm sieve hole pattern, is stored in the siccative storehouse through screening qualified particle;
Four, the bulky grain particle after screening is hidden for subsequent use by sending into the siccative warehousing after the desintegrator hammering;
Five, be stored in after drying siccative in the siccative storehouse, should in 8 hours, use, stop production that the siccative in the reply siccative storehouse redeterminates moisture content more than 1 day, stipulate that as surpassing should again be dried to the regulation moisture content can use;
Six, extruded hollow density board blanket glue should meet following index after the modulation:
First: (1) 100 ℃ of temperature conditions lower hardening times within 1 minute,
(2) 45 ℃ of temperature conditions lower hardening times at 50-60 minute,
(1) at ambient temperature, viscosity is increased to gradually and can not ends by spray feed, is no less than 2 hours;
Second: prescription: weighing scale
(1) urea-formaldehyde resin adhesive is 100 parts,
(2) agramon 10-15 part,
(3) powdery ammonium chloride 0.4-1 part is mixed well with the rear adding that is dissolved in water,
(4) add in right amount hexamethylenetetramine;
Third: rubber material using quantity: over dry material and hard resin ratio are not less than 100.: 6, and every cubic metre of blanket is with 70 kilograms of urea-formaldehyde resin adhesives;
Seven, preparation waterproofing agent:
1) waterproofing agent proportioning: weighing scale
(1) commercial wax is 100 parts,
(2) water is 400 parts,
(3) oleic acid is 14 parts,
7 parts of (4) 25% ammonia spirits,
After the mixing lamination must not be arranged, its granular size is 2-3 μ m;
2) weight ratio of over dry material and commercial wax is 100: 0.75, and every cubic metre of hollow density board blanket uses waterproofing agent between the 20-25 kilogram;
Eight, fiber coating waterproofing agent and glue, the operating pressure of air compressor is with 8kg/cm
2, the particle absolute drift after spraying is no more than 12%;
Nine, the fiber after spraying should push continuously, the temperature of extruder is not less than 170 ℃, it is even that blanking should keep, prevent edges of boards plug material, discharge quantity should adapt with blanket thickness, the ejecting plate speed of different-thickness blanket: when 1) blanket thickness was the 10-13 millimeter, the average speed of extruding ejecting plate was the 60-70 centimeters/minute, and peak is no more than 75 centimeters/minute; When 2) blanket thickness was the 16-19 millimeter, the average speed of extruding ejecting plate was the 55-60 centimeters/minute, and peak is no more than 65 centimeters/minute;
When temperature is lower than 170 ℃, should lowers accordingly the extruder press speed of a motor vehicle, thereby reach the intensity that guarantees blanket with the abundant curing of guaranteeing resin;
Though ten, through the fiber of spraying behind the sizing material as failing in 1 hour, to be finished or not by 1 hour and resin has solidified this batch fiber and can not use;
11, two iron plate spacings of extruder must be balanced, the extrusion modling blanket, and its thickness tolerance scope ± 0.5 millimeter, each position bulk density difference of width is no more than 0.05 gram per centimeter; Hollow density board sandwich layer has an emptying heart circular hole, and the peripheral intervals distance of Kong Yukong is 3 millimeters, and the periphery in hole and the surface distance of sheet material are 5 millimeters;
12, the hollow density board blanket saw length of cutting should be according to specifying finished product length add in addition 30 millimeters;
13, the blanket after saw cuts answer four jiaos upright, neatly flatly repeatedly stack built on stilts and be no less than 200 millimeters, every stack height is no more than 1400 millimeters, warehouse-in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110049150 CN102152375B (en) | 2011-03-01 | 2011-03-01 | Hollow density board and extruding manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110049150 CN102152375B (en) | 2011-03-01 | 2011-03-01 | Hollow density board and extruding manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102152375A CN102152375A (en) | 2011-08-17 |
| CN102152375B true CN102152375B (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110049150 Expired - Fee Related CN102152375B (en) | 2011-03-01 | 2011-03-01 | Hollow density board and extruding manufacturing method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102431074A (en) * | 2011-11-14 | 2012-05-02 | 南京林业大学 | Extruded shaving board with transverse holes, production method and extruder device with improved heating racking pipes |
| EP3272480B1 (en) * | 2016-07-21 | 2022-12-07 | Homann Holzwerkstoffe GmbH | Method for producing a fibreboard panel |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2486569A1 (en) * | 1980-07-10 | 1982-01-15 | Serre Michel | Modular hollow building blocks - made from sheet and channel profiles of particle board plus expanded polystyrene insulation |
| CN201271925Y (en) * | 2008-05-14 | 2009-07-15 | 唐善学 | Hollow medium-density fiberboard |
| EP1199141B1 (en) * | 2000-10-16 | 2010-01-20 | Yamaha Corporation | Manufacturing method for hollow panel |
| CN201423698Y (en) * | 2009-02-23 | 2010-03-17 | 唐善学 | Extruded hollow medium-density fibreboard |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5757643A (en) * | 1980-09-25 | 1982-04-06 | Noda Plywood Mfg Co Ltd | Manufacturing of woody fiber board |
| JPH0485023A (en) * | 1990-07-30 | 1992-03-18 | Okura Ind Co Ltd | Manufacture porous hollow composite sheet |
| CN200984771Y (en) * | 2006-06-02 | 2007-12-05 | 江苏胜阳实业股份有限公司 | Artificial hollow chipboard |
| CN101705737A (en) * | 2009-11-03 | 2010-05-12 | 四川升达林业产业股份有限公司 | Man-made hollow fiber board and manufacturing method |
| CN101774204B (en) * | 2010-01-26 | 2011-11-30 | 南京林业大学 | Gingkgo hollow shaving board with anti-corrosion function and manufacture method thereof |
-
2011
- 2011-03-01 CN CN 201110049150 patent/CN102152375B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2486569A1 (en) * | 1980-07-10 | 1982-01-15 | Serre Michel | Modular hollow building blocks - made from sheet and channel profiles of particle board plus expanded polystyrene insulation |
| EP1199141B1 (en) * | 2000-10-16 | 2010-01-20 | Yamaha Corporation | Manufacturing method for hollow panel |
| CN201271925Y (en) * | 2008-05-14 | 2009-07-15 | 唐善学 | Hollow medium-density fiberboard |
| CN201423698Y (en) * | 2009-02-23 | 2010-03-17 | 唐善学 | Extruded hollow medium-density fibreboard |
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| CN102152375A (en) | 2011-08-17 |
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Granted publication date: 20130410 Termination date: 20140301 |