CN103264429B - A kind of method of utilizing two step flat-press processes to produce hollow chipboard - Google Patents
A kind of method of utilizing two step flat-press processes to produce hollow chipboard Download PDFInfo
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- CN103264429B CN103264429B CN201310148831.9A CN201310148831A CN103264429B CN 103264429 B CN103264429 B CN 103264429B CN 201310148831 A CN201310148831 A CN 201310148831A CN 103264429 B CN103264429 B CN 103264429B
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- hollow
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- particieboard
- monomer
- chipboard
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Abstract
The invention discloses a kind of method of utilizing two step flat-press processes to produce hollow chipboards and composite plate, comprise the following steps: the particieboard monomer of preparing one side and have semicircle orifice; The macaroni coating modified polyvinyl acetate emulsion glue of the particieboard monomer of making, hollow to hollow symmetrical placement, send in cold press and cold pressing. The present invention adopts two step flat-press processes to produce hollow chipboard and compound air core, many weak points of direct flat-press process, extrusion production hollow chipboard are evaded, products obtained therefrom has the plurality of advantages such as outstanding mechanical property, low burst size of methanal, the high ratio of strength to weight, product surface can directly use without veneer facing, can be widely used in building and furniture industry; The single or multiple lift press that this process using is common, has saved equipment cost without buying new equipment, has special meaning for middle-size and small-size artificial board enterprise.
Description
Technical field
The invention belongs to hollow chipboard manufacturing technology field, relate in particular to onePlant and utilize two step flat-press processes to produce the method for hollow chipboards.
Background technology
Hollow-core construction particieboard is as a kind of new engineering material, with common planningCard is compared, and is mainly used in timber industry and repairs profession, in real estate industry's prosperityToday, hollow chipboard segments market and has a lot of advantages at this, it is physicalCan be good, density is lower than ordinary particle board, and insulation, sound insulation, compressive property are goodGood, at home on market, hollow chipboard is widely used in: the door core of timber at presentMaterial, interior decoration wall barrier material, furniture baffle plate, tabletop plate core material etc.
Producing hollow chipboard can be divided into by pressuring method: flat-press process and crowdedPlaten press, concora crush is produced hollow chipboard because its demoulding difficulty, thickness direction water suction are swollenThe high many drawbacks of swollen rate, are producing few application of seldom using, and at present comparatively popular squeezesPlaten press is produced hollow chipboard technique, its have technological process simply without mating formation, in advanceThe operations such as pressure, production equipment simple production continuity is high, the good thickness of product mechanical propertyThe advantages such as direction expansion rate of water absorption is low, but due to the product of its preparation method limit productionThe longitudinal MOR of product is low, length direction thickness swelling rate is high, it is thin to be difficult to produceBased plate etc.
Summary of the invention
The object of the embodiment of the present invention is to provide one to utilize two step flat-press processesProduce the method for hollow chipboard, be intended to solve the concora crush of existing production hollow chipboardDemoulding difficulty, the thickness direction expansion rate of water absorption height of producing hollow chipboard existence are manyDrawback, the product of the limit production that extrusion production hollow chipboard technique exists is longitudinalMOR is low, length direction thickness swelling rate is high, be difficult to produce slim sheet materialProblem.
The embodiment of the present invention is achieved in that utilizes two step flat-press processes to produceThe method of hollow chipboard, the described side that utilizes two step flat-press processes to produce hollow chipboardMethod comprises the following steps:
Prepare the particieboard monomer that one side has semicircle orifice;
The macaroni coating modified polyvinyl acetate breast of the particieboard monomer of makingSol, hollow to hollow symmetrical placement, send in cold press and cold pressing.
Further, the described side that utilizes two step flat-press processes to produce hollow chipboardMethod concrete steps are:
Step 1: by the equidistant parallel placement of semicircle mould pressing board length directionOn backing plate, the load weighted applying glue wood shavings of evenly mating formation, send into preformer pre-moldingAfter, together send in hot press together with backing plate, process heat is molded in accordance with regulations, release,Backing plate is taken out together with shaping slab, by shaping slab upset, take out mould, formThere is the particieboard monomer that one side has semicircle orifice, two-sided fixed thick sanding.
Step 2: the macaroni of the particieboard monomer that two step 1 are madeCoating modified polyvinyl acetate emulsion glue (glue-spread is 200g/m2), hollow to hollow rightClaim to place, send into the 2h that colds pressing in cold press, take out, storage maintenance 24h, supports emptyHeart particieboard.
Further, in described step 1, two-sided thick sanding is calmly to 20mm, hollowThe slight sanding of face.
Further, the painting of modified polyvinyl acetate emulsion glue in described step 2Glue amount is 200g/m2.
The method of utilizing two step flat-press processes to produce hollow chipboard of the present invention,By adopting two step flat-press processes to produce hollow chipboard, evade direct flat-press process, squeezedPlaten press is produced many weak points of hollow chipboard, and products obtained therefrom has outstanding powerLearn the plurality of advantages such as performance, low burst size of methanal, the high ratio of strength to weight, product surface can be notDirectly use with veneer facing, can be widely used in building and furniture industry; This technique is adoptedWith common single or multiple lift press, save equipment cost without buying new equipment,There is special meaning for middle-size and small-size artificial board enterprise.
Brief description of the drawings
Fig. 1 is that the two step flat-press processes that utilize that the embodiment of the present invention provides are produced skyThe method flow diagram of heart particieboard;
Fig. 2 is that the two step flat-press processes that the embodiment of the present invention provides are produced hollow planeThe hot pressing schematic diagram of card;
Fig. 3 is that the two step flat-press processes that the embodiment of the present invention provides are produced hollow planeCard product schematic diagram;
(a) circular die,
(b) trapezoidal mould,
(c) triangular mould;
Fig. 4 is the two step flat-press process hollow chipboards that the embodiment of the present invention providesAppearance and size design diagram;
Fig. 5 is the two step flat-press process hollow chipboards that the embodiment of the present invention providesCarry out incrustation schematic diagram;
Fig. 6 be the embodiment of the present invention provide two step flat-press processes produce hollowThe structural representation of producing in door-plate used for shaving board.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage more clear brightIn vain, below in conjunction with embodiment, the present invention is further elaborated. Should manageSeparate, specific embodiment described herein is only in order to explain the present invention, and is not used inLimit the present invention.
Fig. 1 show provided by the invention utilize two step flat-press processes produce hollowThe method of particieboard. For convenience of explanation, only show portion related to the present inventionPoint.
The method of utilizing two step flat-press processes to produce hollow chipboard of the present invention,This method of utilizing two step flat-press processes to produce hollow chipboard comprises the following steps:
Prepare the particieboard monomer that one side has semicircle orifice;
The macaroni coating modified polyvinyl acetate breast of the particieboard monomer of makingSol, hollow to hollow symmetrical placement, send in cold press and cold pressing.
As a prioritization scheme of the embodiment of the present invention, utilize two step flat-press processesThe method concrete steps of producing hollow chipboard are:
Step 1: by the equidistant parallel placement of semicircle mould pressing board length directionOn backing plate, the load weighted applying glue wood shavings of evenly mating formation, send into preformer pre-moldingAfter, together send in hot press together with backing plate, process heat is molded in accordance with regulations, release,Backing plate is taken out together with shaping slab, by shaping slab upset, take out mould, formThere is the particieboard monomer that one side has semicircle orifice, two-sided fixed thick sanding.
Step 2: the macaroni of the particieboard monomer that two step 1 are madeCoating modified polyvinyl acetate emulsion glue (glue-spread is 200g/m2), hollow to hollow rightClaim to place, send into the 2h that colds pressing in cold press, take out, storage maintenance 24h, supports emptyHeart particieboard.
As a prioritization scheme of the embodiment of the present invention, two-sided fixed in step 1Thick sanding is to 20mm, the slight sanding of macaroni.
As a prioritization scheme of the embodiment of the present invention, in step 2, modification is poly-The glue-spread of acetate emulsion glue is 200g/m2.
Below in conjunction with drawings and the specific embodiments, application principle of the present invention is doneFurther describe.
As shown in Figure 1, the two step flat-press processes that utilize of the embodiment of the present invention are producedThe method of hollow chipboard comprises the following steps:
S101: the particieboard monomer of preparing one side and have semicircle orifice;
S102: the poly-acetic acid of macaroni coating modification of the particieboard monomer of makingVac emulsion glue, hollow to hollow symmetrical placement, send in cold press and cold pressing.
Technical solution of the present invention: adopt two step flat-press processes to produce hollowThe process of particieboard, is characterized in that the method comprises following processing step:
The first step/monomer is made: adopt semicircle (or trapezoidal, triangle) mouldAfter tool is mated formation, send into hot press and carry out hot pressing and produce particieboard monomer (as accompanying drawing2), the symmetrical particieboard monomer of producing colded pressing through the bonding secondary of pressure sensitive adhesiveTo final products (as accompanying drawing 3),
Second step/cold pressing bonding: by two symmetrical monomers having produced circleShape (or trapezoidal, triangle) hole one side pressure-sensitive adhesive coating, sends into press cold moudling.
Particieboard monomer processing parameter is as follows:
Wood shavings moisture content: 3～5%
Resin added: 4～8%
Preload pressure: 1.0～1.8MPa
Squeeze time: 2～5min
Hot pressing temperature: 110～140 DEG C
Hot pressing pressure: 2～4MPa
Hot pressing time: 8～15min
Waterproofing agent: 0.8～1.6%,
Particieboard monomer size design parameter following (as accompanying drawing 3):
Length L: choose according to actual conditions
Width B: choose according to actual conditions
Height H: 20～50mm
First hollow hole is apart from plate side distance A 1: choose according to actual conditions
Ju Ban top, hollow hole distance A 2:Common rulerVery little: 3,5,10mm etc.
Hollow radius (mold radius) r:
Hollow hole spacing A3: choose according to mould number and diameter,
Mould number n: choose according to actual conditions
Hollow rate K:
The specific embodiment of the present invention:
The size design of hollow chipboard particieboard:
Appearance and size: 400 × 400 × × 40mm; Hollow radius: 15mm;A1:10mm; A2:5mm; A3:5mm; Hollow rate K:64.8%,
Technological parameter:
Select Aspen wood shavings, it is 3.5% that drying is processed rear moisture content, selectsPhenolic resin adhesive (solid content 45%, viscosity 120s), and add solid masses ratioBe 1.2% atoleine waterproofing agent, mix rear to wood shavings applying glue, resin application methodsSelect glue spraying, preload pressure 1.5MPa time 3min, selects single drylight presses, hot pressingTime 190 DEG C of time 12min, hot pressing pressure is unit pressure 3MPa,, will produceThe circular hole one side coating modified polyvinyl acetate emulsion glue of the particieboard monomer going out, and giveEnter press and cold pressing, can obtain final products, concrete technology step is as follows:
Step 1: by the equidistant parallel placement of semicircle mould pressing board length directionOn backing plate, the load weighted applying glue wood shavings of evenly mating formation on it, send into preformer precompressedAfter moulding, together send in hot press together with backing plate, process heat is molded in accordance with regulations, (asFig. 2), release, takes out backing plate together with shaping slab, by shaping slab upset, getsGo out mould, form the particieboard monomer that there is one side and have semicircle orifice, two-sided fixed thick sandLight is to 20mm, the wherein slight sanding of macaroni;
Step 2: the particieboard monomer that two above-mentioned steps are made hollowFace coating modified polyvinyl acetate emulsion glue (glue-spread is 200g/m2), hollow to hollowSymmetrical placement, sends into the 2h that colds pressing in cold press, takes out, and storage maintenance 24h, supportsHollow chipboard, (as Fig. 3 a, Fig. 4),
China there is no national standard or the professional standard of hollow chipboard at present,Therefore surperficial composite strength, MOR, elastic modelling quantity, the water sucting thickness of sheet material are swollenSwollen rate, all with reference to GB/T48973-2003 " particieboard: use under drying regimeFurniture and interior decoration require with plate " and GB/T17657-1999 " wood-based plate and decorationsDough figurine is made plate physicochemical property test method " carry out; Burst size of methanal is pressed GB18580-2001 " in indoor decorating and refurnishing materials wood-based plate and goods thereof, formaldehyde discharges limitation " are surveyedIt is fixed,
Density: 0.5g/cm3
Surface bonding strength: >=0.9MPa
Burst size of methanal: < 5mg/100g
MOR: 30.50MPa
Elastic modelling quantity: 3100MPa
Thickness swelling rate :≤8.0%.
If adopt trapezoidal or triangular mould, through above-mentioned two steps, divideDo not make the hollow chipboard shown in Fig. 3 (b) and Fig. 3 (c),
If in above-mentioned steps two, by particieboard monomer double spread, andUpper and lower surface is laid whole and is changed fancy veneer, after cold moudling, makes shown in Fig. 5Facing hollow chipboard,
If in above-mentioned steps two, by particieboard monomer double spread, andSlim glued board, bamboo chip plate, density board etc. are laid in top and bottom, at two sides and two endsFace posts rough ground, can be made into composite hollow structural slab, as door-plate after cold moudlingOr partition plate uses.,
The foregoing is only preferred embodiment of the present invention, not in order toRestriction the present invention, all any amendments of doing within the spirit and principles in the present invention,Protection scope of the present invention is equal to replacement and improvement etc., within all should be included in.
Claims (1)
1. utilize two step flat-press processes to produce a method for hollow chipboard, its feature existsIn, the described method of utilizing two step flat-press processes to produce hollow chipboard comprises the following steps:
Prepare the particieboard monomer that one side has semicircle orifice;
The macaroni coating modified polyvinyl acetate emulsion glue of the particieboard monomer of making,Hollow to hollow symmetrical placement, send in cold press and cold pressing;
The described method concrete steps of utilizing two step flat-press processes to produce hollow chipboard are:
Step 1: semicircle mould pressing board length direction is equidistantly placed in parallel in to backing plateUpper, the load weighted applying glue wood shavings of evenly mating formation, send into after preformer pre-molding, connectTogether send in hot press with backing plate, process heat is molded in accordance with regulations, and release will be paddedPlate takes out together with shaping slab, by shaping slab upset, takes out mould, and formation hasOne side has the particieboard monomer of semicircle orifice, two-sided fixed thick sanding;
Step 2: the macaroni coating of the particieboard monomer that two step 1 are made changesProperty polyvinyl acetate emulsion glue, glue-spread is 200g/m2, hollow hollow symmetry is putPut, send into the 2h that colds pressing in cold press, take out, storage maintenance 24h, supports hollow planeCard;
In described step 1, two-sided fixed thick sanding is to 20mm, the slight sanding of macaroni.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310148831.9A CN103264429B (en) | 2013-04-26 | 2013-04-26 | A kind of method of utilizing two step flat-press processes to produce hollow chipboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310148831.9A CN103264429B (en) | 2013-04-26 | 2013-04-26 | A kind of method of utilizing two step flat-press processes to produce hollow chipboard |
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| Publication Number | Publication Date |
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| CN103264429A CN103264429A (en) | 2013-08-28 |
| CN103264429B true CN103264429B (en) | 2016-05-04 |
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| CN201310148831.9A Expired - Fee Related CN103264429B (en) | 2013-04-26 | 2013-04-26 | A kind of method of utilizing two step flat-press processes to produce hollow chipboard |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2417982Y (en) * | 2000-03-09 | 2001-02-07 | 卢冬青 | Moulded hollow plant-fiber plate |
| CN201848908U (en) * | 2010-06-07 | 2011-06-01 | 黄世凯 | Double-layer crossed groove type medium-density fiber board |
| CN102248570A (en) * | 2011-07-10 | 2011-11-23 | 浙江省林业科学研究院 | Internal and external molded wood-bamboo hollow plate and manufacturing method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2678424B2 (en) * | 1993-04-07 | 1997-11-17 | トーア商事株式会社 | Thermal insulation wall structure and concrete formwork structure using natural vegetable fiber such as oil palm fiber |
-
2013
- 2013-04-26 CN CN201310148831.9A patent/CN103264429B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2417982Y (en) * | 2000-03-09 | 2001-02-07 | 卢冬青 | Moulded hollow plant-fiber plate |
| CN201848908U (en) * | 2010-06-07 | 2011-06-01 | 黄世凯 | Double-layer crossed groove type medium-density fiber board |
| CN102248570A (en) * | 2011-07-10 | 2011-11-23 | 浙江省林业科学研究院 | Internal and external molded wood-bamboo hollow plate and manufacturing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 《新型工程木材—空心结构刨花板》;沈隽等;《林业科技》;19960531;第21卷(第3期);第46，57页 * |
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