CN105365003A - Manufacturing technology for water-based zero-formaldehyde blockboard - Google Patents
Manufacturing technology for water-based zero-formaldehyde blockboard Download PDFInfo
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- CN105365003A CN105365003A CN201510773579.XA CN201510773579A CN105365003A CN 105365003 A CN105365003 A CN 105365003A CN 201510773579 A CN201510773579 A CN 201510773579A CN 105365003 A CN105365003 A CN 105365003A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/06—Manufacture of central layers; Form of central layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D5/00—Other working of veneer or plywood specially adapted to veneer or plywood
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Manufacturing & Machinery (AREA)
- Veneer Processing And Manufacture Of Plywood (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a manufacturing technology for a water-based zero-formaldehyde blockboard. The manufacturing technology comprises the steps of material selecting, core strip flush joint, core board splicing, putty filling and sanding, core board gluing, billet assembling, cold pressing, board billet hot-pressing, putty filling, fixed-thickness sanding, masking agent coating, gluing face coating, gluing face cold-pressing, gluing face hot-pressing, edge sawing, sanding and grading and packing. According to the manufacturing technology for the water-based zero-formaldehyde blockboard, water-based zero-formaldehyde adhesive is used for machining and manufacturing blockboard materials, and therefore not only is releasing of formaldehyde avoided, but also the manufacturing technology has more obvious advantages than those of machining and manufacturing the blockboard materials through urea-formaldehyde glue.
Description
Technical field
The present invention relates to woodwork plate production technology field, specifically a kind of aqueous formaldehyde core-board production technology.
Background technology
Woodwork plate is widely used in building field, and it is generally formed by Combined machining after plate core gluing.Woodwork plate sheet material adhesive and the multiplex urea-formaldehyde glue of masking agent in the market, content of formaldehyde severe overweight, and formaldehyde not easily leaves, and easily damages environment, and can damage human body.
summary of the inventionthe object of this invention is to provide a kind of aqueous formaldehyde core-board production technology, to solve prior art Problems existing.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of aqueous formaldehyde core-board production technology, is characterized in that: comprise the following steps:
(1), plate is selected: according to common joiner's grade screening sheet material as core bar;
(2), core bar flushes: flushed by core bar as central layer, require the necessary toe joint of core bar edge, along plate length direction, the distance of two abutted seams of adjacent two row's core bars is not less than 100mm, core bar length is not less than 150mm, and core bar side slit is no more than 2mm, and core bar end face gap is no more than 3mm, core bar side gluing is firm, and core bar can not have bark and round edge;
(3), central layer splicing: coat adhesive on central layer, glue-spread is opened at 0.25-0.3kg/, then central layer is put into plate joggling apparatus and splices, and the heat conduction temperature of plate joggling apparatus is at 105-115 DEG C, necessary gluing is even, requires that adhesive can not bond together central layer and equipment;
(4), greasy stop-off light: central layer has spliced rear entirety placement 24h and carried out greasy benefit, sanding after greasy benefit 24h;
(5), central layer gluing: coat adhesive on central layer, core thickness 2.2-2.6mm single spreading amount 200-220g/ ㎡, calculate by actual coverage, range estimation gluing is even;
(6), assembly: be slab by central layer assembly, require to put up and down during assembly neat;
(7), cold pressing: put into cold pressing 400T press or 600T press of colding pressing carry out cold moudling process by putting neat slab, in cold pressure procedure, the corner of slab must be put neatly up and down, employing cold pressing 400T press time table aobvious pressure 16-18Mpa, adopt the aobvious pressure 11-13Mpa of table when colding pressing 600T press; Time of colding pressing adjusts according to indoor temperature, and cold pressing time more than 25 DEG C 1.5-2h, lower than the 2-3h that colds pressing when 25 DEG C;
(8), slab hot pressing: slab is put into hot pressing 400T press or hot pressing 600T press carries out temperature-pressure, make its adhesive solidify moisture and discharge; Slab before hot pressing will carry out cutting core and repair, unnecessary lap is sliced off, gap, hole can be filled up with central layer bar, hot pressing temperature 115-125 DEG C, adopt during hot pressing 400T press and show aobvious pressure 16-18Mpa, adopt during hot pressing 600T pressure and show aobvious pressure 11-13MPa, hot pressing time 8-10min, drop to 0MPa during release and stop 2-3min;
(9), greasy benefit, fixed thick sanding: place 24h after slab hot pressing completes and carry out greasy benefit, sanding after greasy benefit 24h, sands flat with contact calibrating machine, makes the smooth consistency of thickness of slab, and plate face is easy to decoration;
(10), masking agent is coated with: require in masking agent, to add mill base, modulation panel advancing color according to sheet material, glue-spread 0.2-0.25kg/ opens;
(11), gluing veneer: select suitable veneer slab as requested, veneer actual (real) thickness is not less than 0.2mm, moisture is not higher than 18%, adhesive coated by the slab chosen, adopt screw thread roller glue spreader gluing, double spread amount at 310-330g/ ㎡, by slab areal calculation, the thicker glue-spread of veneer can increase in right amount, and double spread must be evenly;
(12), veneer is colded pressing: adopt 400T press of colding pressing to carry out veneer and cold pressing, the upper and lower slab of veneer requires to put neat, and adopt Aqueous Adhesives veneer between slab adjacent surface, slab is put into 400T press of colding pressing and is colded pressing after depositing 30-50min, 400T press table of colding pressing shows pressure 10-12MPa, and cold pressing time 20-30min;
(13), veneer hot pressing: adopt hot pressing 400T press to carry out veneer hot pressing, before hot pressing, slab will carry out skin patching, the inside and outside foreign material in clear board face, and overlapping layer will slice off, and crack wood wool is repaired, and the unnecessary adhesive of edges of boards needs cleaning; Hot pressing 400T press hot pressing temperature 105-115 DEG C, machine shows pressure 10-11MPa, hot pressing time 2-3min, during release, Pressure Drop is to 0MPa, stop 1-2min, sheet material needs cooling to get rid of moisture after drawing off forcing press, production board moisture is no more than 14% according to national test stone can be qualified;
(14), limit is sawed: burr removing is cut out in the requirement according to different size;
(15), sanding: carry out polishing with the fine sand band of more than 320#, the smooth facing that is easy in plate face is processed;
(16), to grade packaging: according to sheet material various criterion graduation packaging.
Described a kind of aqueous formaldehyde core-board production technology, is characterized in that: in step (1), when the sheet material chosen is fir core plate bar, require that fir core plate bar moisture content is on average less than 12%, maximum point can not higher than 16%; When the sheet material chosen is poplar central layer, require that the moisture content of poplar core is average not higher than 10%, maximum point is not higher than 14%.
Described a kind of aqueous formaldehyde core-board production technology, is characterized in that: described adhesive and masking agent be Aqueous Adhesives all preferably.
Described a kind of aqueous formaldehyde core-board production technology, it is characterized in that: in described step (10), the mill base added is aqueous color paste.
Described a kind of aqueous formaldehyde core-board production technology, is characterized in that: in described step (3), gluing mode can adopt the mode of roller coat, and paint roller selects screw thread rod or light face rod.
Advantage of the present invention is:
1, its water content requirement more wide in range (central layer≤16% when screening central layer and dry plate, dry plate≤18%), GB GB/T5849-2006 requires that central layer moisture content is at 6-14%, general urea-formaldehyde glue moisture content need control at 8%-12%, because easily produce during the excessive hot pressing of moisture come unstuck, the problem such as bubbling, thus affect production board qualification rate and production board Moisture high UCL.
2, must deposit more than 3h after urea-formaldehyde glue gluing, object prevents slab seep through, colds pressing not shaping.After plate core gluing of the present invention, the assembly time arbitrarily can adjust with production procedure, can not deposit direct cold moudling, cold pressing, on sheet material cold moudling without impact after also can depositing 30-50min after group embryo.
3, when urea-formaldehyde glue processes thin wood plank, hot pressing temperature is generally at 90-105 DEG C, and poplar is because large to acid buffering amount, water vapour pressure can be made during high temperature to raise, hinder veneer water translocation, easily produce the defective workmanships such as bubbling, therefore hot press period temperature is not higher than 95 DEG C.The present invention adopts the hot pressing temperature of Aqueous Adhesives processing joiner sheet material at 105-115 DEG C, and not only rate of drying is fast, there will not be the problems referred to above, and is applicable to various material plate core.
4, production technology of the present invention grades packaging process than urea-formaldehyde glue technological process of production shortening 3-4h from raw material screening, gluing and follow-up finished product, and production efficiency significantly improves.The aqueous formaldehyde joiner sheet material surface bonding intensity >=1.3MPa made, GB GB/T5849-2006 requirement >=0.7MPa.
Detailed description of the invention
A kind of aqueous formaldehyde core-board production technology, comprises the following steps:
(1), plate is selected: according to common joiner's grade screening sheet material as core bar;
(2), core bar flushes: flushed by core bar as central layer, require the necessary toe joint of core bar edge, along plate length direction, the distance of two abutted seams of adjacent two row's core bars is not less than 100mm, core bar length is not less than 150mm, and core bar side slit is no more than 2mm, and core bar end face gap is no more than 3mm, core bar side gluing is firm, and core bar can not have bark and round edge; Require in GB GB/T5849-2006 that the distance of two abutted seams to adjacent two row's core bars is not less than 50mm, core bar length is not less than 100mm.Core bar side slit is no more than 1mm, and core bar end face gap is no more than 3mm.
(3), central layer splicing: coat adhesive on central layer, glue-spread is opened at 0.25-0.3kg/, then central layer is put into plate joggling apparatus and splices, and the heat conduction temperature of plate joggling apparatus is at 105-115 DEG C, necessary gluing is even, requires that adhesive can not bond together central layer and equipment;
(4), greasy stop-off light: central layer has spliced rear entirety placement 24h and carried out greasy benefit, sanding after greasy benefit 24h; Object is that residual moisture in plate core is fully volatilized, and after drying to heat, plate core provides and fully puts the time in a suitable place to breed, has enough time for the dry sanding of powder of lacquer putty for use on simultaneously.
(5), central layer gluing: coat adhesive on central layer, core thickness 2.2-2.6mm single spreading amount 200-220g/ ㎡, calculate by actual coverage, range estimation gluing is even;
(6), assembly: be slab by central layer assembly, require to put up and down during assembly neat;
(7), cold pressing: put into cold pressing 400T press or 600T press of colding pressing carry out cold moudling process by putting neat slab, in cold pressure procedure, the corner of slab must be put neatly up and down, employing cold pressing 400T press time table aobvious pressure 16-18Mpa, adopt the aobvious pressure 11-13Mpa of table when colding pressing 600T press; Time of colding pressing adjusts according to indoor temperature, and cold pressing time more than 25 DEG C 1.5-2h, lower than the 2-3h that colds pressing when 25 DEG C; This is to better improve plate core cold moudling effect.
(8), slab hot pressing: slab is put into hot pressing 400T press or hot pressing 600T press carries out temperature-pressure, make its adhesive solidify moisture and discharge; Slab before hot pressing will carry out cutting core and repair, unnecessary lap is sliced off, gap, hole can be filled up with central layer bar, hot pressing temperature 115-125 DEG C, adopt during hot pressing 400T press and show aobvious pressure 16-18Mpa, adopt during hot pressing 600T pressure and show aobvious pressure 11-13MPa, hot pressing time 8-10min, drop to 0MPa during release and stop 2-3min; It is that slab moisture is on average no more than 12%, and maximum point is no more than 14% in order to better be discharged by moisture in sheet material that step-down stops object.
(9), greasy benefit, fixed thick sanding: place 24h after slab hot pressing completes and carry out greasy benefit, sanding after greasy benefit 24h, sands flat with contact calibrating machine, makes the smooth consistency of thickness of slab, and plate face is easy to decoration; Placing 24h object is that residual moisture in plate core is fully volatilized, and after drying to heat, plate core provides and fully puts the time in a suitable place to breed, has enough time for the dry sanding of powder of lacquer putty for use on simultaneously.
(10), masking agent is coated with: require in masking agent, to add mill base, modulation panel advancing color according to sheet material, glue-spread 0.2-0.25kg/ opens;
(11), gluing veneer: select suitable veneer slab as requested, veneer actual (real) thickness is not less than 0.2mm, moisture is not higher than 18%, adhesive coated by the slab chosen, adopt screw thread roller glue spreader gluing, double spread amount at 310-330g/ ㎡, by slab areal calculation, the thicker glue-spread of veneer can increase in right amount, and double spread must be evenly;
(12), veneer is colded pressing: adopt 400T press of colding pressing to carry out veneer and cold pressing, the upper and lower slab of veneer requires to put neat, and adopt Aqueous Adhesives veneer between slab adjacent surface, slab is put into 400T press of colding pressing and is colded pressing after depositing 30-50min, 400T press table of colding pressing shows pressure 10-12MPa, and cold pressing time 20-30min; Because adhesive of the present invention is Aqueous Adhesives, when Aqueous Adhesives is used for woodwork plate veneer, there is certain storage period that sheet material can be allowed to absorb moisture in adhesive, panel seep through can be prevented like this.
(13), veneer hot pressing: adopt hot pressing 400T press to carry out veneer hot pressing, before hot pressing, slab will carry out skin patching, the inside and outside foreign material in clear board face, and overlapping layer will slice off, and crack wood wool is repaired, and the unnecessary adhesive of edges of boards needs cleaning; Hot pressing 400T press hot pressing temperature 105-115 DEG C, machine shows pressure 10-11MPa, hot pressing time 2-3min, during release, Pressure Drop is to 0MPa, stop 1-2min, sheet material needs cooling to get rid of moisture after drawing off forcing press, production board moisture is no more than 14% according to national test stone can be qualified;
(14), limit is sawed: burr removing is cut out in the requirement according to different size;
(15), sanding: carry out polishing with the fine sand band of more than 320#, the smooth facing that is easy in plate face is processed;
(16), to grade packaging: according to sheet material various criterion graduation packaging.
In step (1), when the sheet material chosen is fir core plate bar, require that fir core plate bar moisture content is on average less than 12%, maximum point can not higher than 16%; When the sheet material chosen is poplar central layer, require that the moisture content of poplar core is average not higher than 10%, maximum point is not higher than 14%.
The KTC829C-1 Aqueous Adhesives that all preferred Hefei Ke Tian chemical company of adhesive and masking agent produces.
In step (10), the mill base added is aqueous color paste.
In step (3), gluing mode can adopt the mode of roller coat, and paint roller selects screw thread rod or light face rod.
Claims (5)
1. an aqueous formaldehyde core-board production technology, is characterized in that: comprise the following steps:
(1), plate is selected: according to common joiner's grade screening sheet material as core bar;
(2), core bar flushes: flushed by core bar as central layer, require the necessary toe joint of core bar edge, along plate length direction, the distance of two abutted seams of adjacent two row's core bars is not less than 100mm, core bar length is not less than 150mm, and core bar side slit is no more than 2mm, and core bar end face gap is no more than 3mm, core bar side gluing is firm, and core bar can not have bark and round edge;
(3), central layer splicing: coat adhesive on central layer, glue-spread is opened at 0.25-0.3kg/, then central layer is put into plate joggling apparatus and splices, and the heat conduction temperature of plate joggling apparatus is at 105-115 DEG C, necessary gluing is even, requires that adhesive can not bond together central layer and equipment;
(4), greasy stop-off light: central layer has spliced rear entirety placement 24h and carried out greasy benefit, sanding after greasy benefit 24h;
(5), central layer gluing: coat adhesive on central layer, core thickness 2.2-2.6mm single spreading amount 200-220g/ ㎡, calculate by actual coverage, range estimation gluing is even;
(6), assembly: be slab by central layer assembly, require to put up and down during assembly neat;
(7), cold pressing: put into cold pressing 400T press or 600T press of colding pressing carry out cold moudling process by putting neat slab, in cold pressure procedure, the corner of slab must be put neatly up and down, employing cold pressing 400T press time table aobvious pressure 16-18Mpa, adopt the aobvious pressure 11-13Mpa of table when colding pressing 600T press; Time of colding pressing adjusts according to indoor temperature, and cold pressing time more than 25 DEG C 1.5-2h, lower than the 2-3h that colds pressing when 25 DEG C;
(8), slab hot pressing: slab is put into hot pressing 400T press or hot pressing 600T press carries out temperature-pressure, make its adhesive solidify moisture and discharge; Slab before hot pressing will carry out cutting core and repair, unnecessary lap is sliced off, gap, hole can be filled up with central layer bar, hot pressing temperature 115-125 DEG C, adopt during hot pressing 400T press and show aobvious pressure 16-18Mpa, adopt during hot pressing 600T pressure and show aobvious pressure 11-13MPa, hot pressing time 8-10min, drop to 0MPa during release and stop 2-3min;
(9), greasy benefit, fixed thick sanding: place 24h after slab hot pressing completes and carry out greasy benefit, sanding after greasy benefit 24h, sands flat with contact calibrating machine, makes the smooth consistency of thickness of slab, and plate face is easy to decoration;
(10), masking agent is coated with: require in masking agent, to add mill base, modulation panel advancing color according to sheet material, glue-spread 0.2-0.25kg/ opens;
(11), gluing veneer: select suitable veneer slab as requested, veneer actual (real) thickness is not less than 0.2mm, moisture is not higher than 18%, adhesive coated by the slab chosen, adopt screw thread roller glue spreader gluing, double spread amount at 310-330g/ ㎡, by slab areal calculation, the thicker glue-spread of veneer can increase in right amount, and double spread must be evenly;
(12), veneer is colded pressing: adopt 400T press of colding pressing to carry out veneer and cold pressing, the upper and lower slab of veneer requires to put neat, and adopt Aqueous Adhesives veneer between slab adjacent surface, slab is put into 400T press of colding pressing and is colded pressing after depositing 30-50min, 400T press table of colding pressing shows pressure 10-12MPa, and cold pressing time 20-30min;
(13), veneer hot pressing: adopt hot pressing 400T press to carry out veneer hot pressing, before hot pressing, slab will carry out skin patching, the inside and outside foreign material in clear board face, and overlapping layer will slice off, and crack wood wool is repaired, and the unnecessary adhesive of edges of boards needs cleaning; Hot pressing 400T press hot pressing temperature 105-115 DEG C, machine shows pressure 10-11MPa, hot pressing time 2-3min, during release, Pressure Drop is to 0MPa, stop 1-2min, sheet material needs cooling to get rid of moisture after drawing off forcing press, production board moisture is no more than 14% according to national test stone can be qualified;
(14), limit is sawed: burr removing is cut out in the requirement according to different size;
(15), sanding: carry out polishing with the fine sand band of more than 320#, the smooth facing that is easy in plate face is processed;
(16), to grade packaging: according to sheet material various criterion graduation packaging.
2. a kind of aqueous formaldehyde core-board production technology according to claim 1, is characterized in that: in step (1), when the sheet material chosen is fir core plate bar, and require that fir core plate bar moisture content is on average less than 12%, maximum point can not higher than 16%; When the sheet material chosen is poplar central layer, require that the moisture content of poplar core is average not higher than 10%, maximum point is not higher than 14%.
3. a kind of aqueous formaldehyde core-board production technology according to claim 1, is characterized in that: described adhesive and masking agent be Aqueous Adhesives all preferably.
4. a kind of aqueous formaldehyde core-board production technology according to claim 1, it is characterized in that: in described step (10), the mill base added is aqueous color paste.
5. a kind of aqueous formaldehyde core-board production technology according to claim 1, is characterized in that: in described step (3), gluing mode can adopt the mode of roller coat, and paint roller selects screw thread rod or light face rod.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510773579.XA CN105365003A (en) | 2015-11-13 | 2015-11-13 | Manufacturing technology for water-based zero-formaldehyde blockboard |
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| CN201510773579.XA CN105365003A (en) | 2015-11-13 | 2015-11-13 | Manufacturing technology for water-based zero-formaldehyde blockboard |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105818228A (en) * | 2016-05-23 | 2016-08-03 | 孙小力 | Automatic board production device and method |
| CN106393381A (en) * | 2016-11-25 | 2017-02-15 | 浙江林昌木业有限公司 | Production process of composite door sheet |
| CN106827106A (en) * | 2016-12-21 | 2017-06-13 | 兰州科天环保节能科技有限公司 | Aqueous banksia rose plate of zero Form aldehyde release and preparation method thereof |
| CN107309983A (en) * | 2017-07-13 | 2017-11-03 | 兰州科天水性科技有限公司 | A kind of LVL layers of collection sheet material of zero Form aldehyde release water-borne polyurethane bond and its manufacture method |
| CN108081405A (en) * | 2017-11-24 | 2018-05-29 | 南宁科天水性科技有限责任公司 | A kind of hot pressing humidity discharging method of glued board and core-board |
| CN109487633A (en) * | 2018-11-23 | 2019-03-19 | 郑辉 | Utilize the method for bidentis stalk and birch wood shavings manufacture environment-friendly type building materials of house fitting-up plate |
| CN109676737A (en) * | 2018-12-14 | 2019-04-26 | 沭阳县金森源木业有限公司 | A kind of production method of solid wood thickness core plate |
| CN110421655A (en) * | 2019-07-22 | 2019-11-08 | 石家庄华杰木业有限公司 | Compound one-step moulding double-layer offset plate ecological board and production method |
| CN110733084A (en) * | 2019-10-24 | 2020-01-31 | 浙江升华云峰新材股份有限公司 | formaldehyde-free joinery board core and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN109487633B (en) * | 2018-11-23 | 2021-01-08 | 双建建设股份有限公司 | Method for manufacturing environment-friendly home decoration building material plate by using flaveria bidentis straws and birch wood shavings |
| CN109676737A (en) * | 2018-12-14 | 2019-04-26 | 沭阳县金森源木业有限公司 | A kind of production method of solid wood thickness core plate |
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| CN110733084A (en) * | 2019-10-24 | 2020-01-31 | 浙江升华云峰新材股份有限公司 | formaldehyde-free joinery board core and preparation method thereof |
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