CN106182219A - A kind of aqueous formaldehyde decorative cover base board and production technology thereof - Google Patents
A kind of aqueous formaldehyde decorative cover base board and production technology thereof Download PDFInfo
- Publication number
- CN106182219A CN106182219A CN201610547571.6A CN201610547571A CN106182219A CN 106182219 A CN106182219 A CN 106182219A CN 201610547571 A CN201610547571 A CN 201610547571A CN 106182219 A CN106182219 A CN 106182219A
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- China
- Prior art keywords
- central layer
- decorative cover
- base board
- cover base
- slab
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Classifications
-
- 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
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/16—Drying; Softening; Cleaning
- B32B38/164—Drying
Abstract
The present invention provides a kind of aqueous formaldehyde decorative cover base board and production technology thereof, comprises the following steps: 1) sheet material sorting；2) central layer joins；3) single spreading: central layer is carried out single spreading with thread roller glue spreader；Single spreading uses Aqueous Adhesives, and its coating weight is 138.5 182.7g/m2；4) assembly, deposit: central layer is become slab with backboard assembly, requires during assembly that central layer and backboard are put neatly up and down, deposit 0.5 1h；5) once cold pressing；6) slab core is repaired；7) secondary is colded pressing；8) sanding；9) gluing veneer: by panel of fitting after slab gluing, gluing uses Aqueous Adhesives, and its coating weight is 138.5 182.7g/m2；Deposit 0.5 1h；10) cold pressing for three times；11) hot pressing.The formaldehydeless release of decorative cover base board that the present invention obtains, reduces environmental pollution, and technological process and time substantially shorten, and improve production efficiency.
Description
Technical field
The present invention relates to decorative board material field, specifically disclose a kind of aqueous formaldehyde decorative cover base board and produce work
Skill.
Background technology
Along with the raising of people's living standard, people are more and more higher to indoor finishing requirements.At present, the dress of indoor wallboard
Repairing is not swabbing or wallpaper, but uses plank to attach.Existing wooden decoration panel is by solid wood board essence
Close slicing becomes meagre veneer, with clamping plate as base material, through the decorative panel with one side decoration function that adhesion process is made
Material.In decoration panel produces, almost every one procedure affects plywood bonding quality the most to varying degrees, mainly has three
Individual aspect needs emphasis to consider: being on the one hand adhesive quality, adhesive requires stable performance, has enough bonding strengths, resin
Content is suitable with viscosity, has the phase guarantee normal operating of sufficiently long activity and goods indices to meet the requirements.The opposing party
Face is Veneer quality, controls Veneer moisture and flatness well.Moisture content owing to aqueous adhesive is with water as medium, to sheet material
Require apparently higher than three-aldehyde glue, at postorder hot pressing moisture evaporation, it is ensured that finished product sheet material moisture content is in acceptability limit.3rd
Aspect is in gluing procedures, has needed to be grasped resin added and has deposited two links, and glue amount is too much, blocked up or very few, all can affect
Board quality and production cost；Resting period is to make rationally change with climate change.
From the point of view of existing market situation, the production of solid wood decorative panel is still based on three-aldehyde glue, and not only burst size of methanal surpasses
Mark phenomenon ratio is more serious, and the equipment that produces is simple, operation imperfection, causes that product variety is few, of poor quality, operation discontinuous,
The demand of city's field alignment Top Grade Decorative Plank can not be met.
Summary of the invention
It is an object of the invention to overcome the defect of prior art, it is provided that a kind of aqueous formaldehyde decorative cover base board and
Production technology, this formaldehydeless release of decorative cover base board, reduces environmental pollution, and technological process and time substantially shortens, and carry
High efficiency, meets the demand of city's field alignment Top Grade Decorative Plank.
In order to realize object above and other purposes, the present invention is by including that techniques below scheme realizes: Yi Zhongshui
The production technology of property zero formaldehyde decorative cover base board, comprises the following steps:
1) sheet material sorting: screening assembly sheet material, removes underproof sheet material；
Dash board: sort out lifts, corrugated and the serious sheet material lacking silk of negative and positive wood；
Central layer: sort out that uneven distribution, moisture is excessive, burr ditch depth, negative and positive wood, Qu Wen, the sheet material of undersize；Central layer
On have the one side of the biggest and deep slight crack to be referred to as loose side, another side is referred to as tight face, need to be by the degree of tightness of described central layer towards unification
Individual direction is separately.
2) central layer joins: by described central layer tightly facing to unified direction, joins with thermosol tree lace, joins out required specification chi
Very little central layer.
3) single spreading: described central layer is carried out single spreading with thread roller glue spreader；Single spreading uses aqueous gluing
Agent, its coating weight is 138.5-182.7g/m2；One of innovative point being adjusted to present invention of coating weight.
4) assembly, deposit: according to the most staggered mode of wood grain by described central layer and described backboard group
Base becomes slab, it is desirable to described central layer and described backboard are put neatly up and down, then deposit 0.5-1h；The effect deposited is so that water
Property adhesive preferably penetrate in central layer, improve bonding strength.
5) once cold pressing: in being positioned over cold press, carry out cold moudling；The effect once colded pressing is that central layer is cold with backboard
Molded.
6) slab core is repaired: sliced off by the unnecessary lap of described slab, by the gap of described slab, hole central layer
Bar is filled up.
7) secondary is colded pressing: carry out cold moudling in described slab is positioned over cold press；The effect that secondary is colded pressing is to improve
Flatness, facilitates follow-up repairing.
8) sanding: remove the score of slab and the adhesive tape used by repairing after repairing with abrasive band so that slab is smooth
Consistency of thickness.
9) gluing veneer: by described panel of fitting after slab gluing, gluing uses described Aqueous Adhesives, and its coating weight is
138.5-182.7g/m2；Then 0.5-1h is deposited.The effect deposited: make Aqueous Adhesives penetrate in slab, improves gluing
Intensity, and make the moisture content of each layer of the slab before hot pressing and each point obtain balance, it is to avoid the later stage causes owing to moisture content is unbalance
Substrate produces bending and torsional deformation.
10) cold pressing for three times: in the substrate after veneer is positioned over cold press, carry out cold moudling；The effect that three times are colded pressing is
By slab and panel cold moudling.
11) hot pressing: the substrate after colding pressing three times carries out hot-press gluing in being positioned over 400T hot press.
Preferably, described Aqueous Adhesives is the water-borne pressure sensitive adhesive that vinyl acetate-ethylene copolymer is modified.Aqueous Adhesives
The innovative point being chosen as present invention of kind.The firming agent of described Aqueous Adhesives need to be before described laminating panel step
It is added.The curing rate of adhesive can regulate according to site environment and technological process, meets the demand that difference produces,
The active phase of glue can be extended by the usage amount reducing firming agent, in order to whole technological process can be orderly when high temperature
Carry out；The usage amount increasing firming agent when low temperature reduces the time needed for pre-molding, saves the time of cold moudling.
It is highly preferred that the model of described adhesive is section of Hefei City sky chemical industry KTC829C-1.The glue used due to the present invention
Glutinous agent has water absorption character, and the moisture content of its sheet material is lower than the sheet material moisture content that normal urea-formaldehyde glue is made.Simultaneously to assembly it
Before the water content requirement less than height of central layer, shorten central layer drying time, Feedstock treating this to be saved time
Between and the energy.
Preferably, in described step 4), 9) in, when indoor temperature is more than 25 DEG C, described in time of depositing be 30-
35min；When room temperature is less than or equal to 25 DEG C, described in time of depositing be 35-60min.
Preferably, described step 8) in sanding at twice: sanding for the first time uses 40-60 mesh abrasive band, and sanding for the second time is adopted
With 60-80 mesh abrasive band.
Preferably, described step 5), 7), 10) described in cold press be 400T cold press, in the process of described cooling molding
It is 11-13MPa that middle table shows pressure；Described step 5) in the time of colding pressing be 1.5-2h, described step 7) cool time for colding pressing
Time is 0.5-1h, described step 10) cool time be 1-1.5h.
Preferably, described step 11) middle employing 4 chi × 8 chi 400T hot presses, its hot pressing temperature is 105-115 DEG C；Table shows
Pressure is 9-11Mpa, and hot pressing time is 3-4min, and dwell pressure is 2-3MPa, and the dwell time is 1-1.5min.400T hot press
Hot-pressing system quick heating, and heating system and heat-conducting system carried out segment design, so that its heat consumption can be low and heat conduction is equal
Even, technical arrangement plan wide ranges, therefore, it is possible to meet the processing and manufacturing of sheet material.
Preferably, described production technology is additionally included in before described central layer joins step and utilizes vacuum drying cellar for storing things or conventional cellar for storing things
It is dried and central layer is dried so that central layer raw aqueous rate is 10-18%.
Preferably, vacuum drying cellar for storing things or conventional is utilized before the step that described production technology is additionally included in described single spreading
Cellar for storing things is dried and is dried described backboard so that the moisture content of described backboard is 8-16%.
Preferably, vacuum drying cellar for storing things or conventional cellar for storing things are utilized before the step that described production technology is additionally included in described thick china
It is dried and described panel is dried so that the moisture content of described panel is 12-18%.
Invention additionally discloses a kind of decorative cover base board being prepared from by above-mentioned production technology.
In sum, the present invention provides the production technology of a kind of aqueous formaldehyde decorative cover base board, and the present invention's is useful
Effect: the aqueous KTC829C-1 zero formaldehyde Diamond Search adhesive that in the present invention, adhesive Jun Shi section used sky produces, this glue should
In decorative cover base board, technological process and time substantially shorten, and improve production efficiency, and make 400 pieces of substrates is one simultaneously
Individual flow process, whole flow process completes less than 16h from veneer sorting to hot pressing, uses urea-formaldehyde glue, phenol glue the most at least to need 24h
Just can produce whole flow process.In the present invention, decorative cover base board is made up of panel, central layer and backboard, suppresses through High Temperature High Pressure
Form, effectively improve that timber is yielding, the defect such as warpage and cracking, structurally ensured the size of decorative cover base board
Stability.The present invention uses the adhesive without aldehyde of environmental protection so that the decoration panel substrate environmental-protecting performance that the present invention obtains is high, and formaldehyde contains
Amount detection limit is less than 0.1ppm, the standard of remote super GB E0 level 0.5ppm.
Detailed description of the invention
The present invention is expanded on further below in conjunction with embodiment.Should be understood that embodiment is merely to illustrate the present invention, and unrestricted
The scope of the present invention.
Embodiment 1
The production technology of a kind of aqueous formaldehyde decorative cover base board, comprises the following steps:
1) veneer sorting:
Dash board: sort out lifts, corrugated and the serious sheet material lacking silk of negative and positive wood；Dash board can be as panel and backboard, warp
Cross dried using the moisture control of the dash board as panel to 12-18%, and aqueous using the dash board as backboard
Rate controls at 8-16%；
Central layer: sort out that uneven distribution, moisture is excessive, burr ditch depth, negative and positive wood, Qu Wen, the sheet material of undersize, passes through
Dried by central layer moisture control at 8-16%.
2) central layer joins: by described central layer tightly facing to unified direction, joins with thermosol tree lace, joins out specification
The central layer of 1270mm × 2500mm；
3) laminating backboard: using thread roller glue spreader, adjust glue spreader roller spacing, glue is put into glue groove, central layer passes through
Single spreading is carried out between two rollers；Single spreading uses KTC829C-1 Aqueous Adhesives, and its coating weight is that 0.50kg/ opens；Must
Even spread must be estimated, detect glue-spread.
4) assembly, deposit: according to the most staggered mode of wood grain by described central layer and described backboard group
Base becomes slab, requires that central layer and backboard are put neatly up and down during assembly, and then assembly time 2.5h deposits 35min (room temperature 25
℃)。
5) once colding pressing: carry out cold moudling in slab is positioned over 400T cold press cold press, pressure of colding pressing is
12MPa, the time of colding pressing is 2h.
6) slab core is repaired: carry out cutting core and repair, sliced off by the unnecessary lap of slab, by the gap of slab, hole
Fill up with central layer bar, repair time 2.5h.
7) secondary is colded pressing: carry out cold moudling in being positioned over 400T cold press, and cold pressing pressure 12MPa, and cold pressing time 1h.
8) sanding: remove the score of slab and the adhesive tape used by repairing after repairing with abrasive band, sanding at twice: the
Sanding uses 40 mesh abrasive bands, and sanding for the second time uses 60 mesh abrasive bands, secondary sanding time to be 50min.
9) laminating panel: by panel of fitting after slab gluing, gluing uses KTC829C-1 Aqueous Adhesives, its coating weight
Open for 0.50kg/；Then 35min (room temperature 25 DEG C) is deposited.
10) colding pressing for three times: carry out cold moudling in being positioned over 400T cold press, cold pressing pressure 12MPa, colds pressing the time
1.5h。
11) hot pressing: carry out hot-press gluing in placing the 400T hot press of 4 × 8, it is thus achieved that decorative cover base board.Wherein, heat
Pressure temperature is 110 DEG C, and it is 10Mpa that table shows pressure, and hot pressing time is 4min, and dwell pressure is 2MPa, and the stop 1min time is got rid of
Steam.
Embodiment 2
The production technology of a kind of aqueous formaldehyde decorative cover base board, comprises the following steps:
1) veneer sorting:
Dash board: sort out lifts, corrugated and the serious sheet material lacking silk of negative and positive wood；Dash board can be as panel and backboard, warp
Cross dried using the moisture control of the dash board as panel to 12-18%, and aqueous using the dash board as backboard
Rate controls at 8-16%；
Central layer: sort out that uneven distribution, moisture is excessive, burr ditch depth, negative and positive wood, Qu Wen, the sheet material of undersize, passes through
Dried by central layer moisture control at 8-16%.
2) central layer joins: by described central layer tightly facing to unified direction, joins with thermosol tree lace, joins out specification
The central layer of 1270mm × 2500mm.
3) laminating backboard: using thread roller glue spreader, adjust glue spreader roller spacing, glue is put into glue groove, central layer passes through
Single spreading is carried out between two rollers；Single spreading uses KTC829C-1 Aqueous Adhesives, and its coating weight is that 0.55kg/ opens；Must
Even spread must be estimated, detect glue-spread.
4) assembly, deposit: according to the most staggered mode of wood grain by described central layer and described backboard group
Base becomes slab, requires that central layer and backboard are put neatly up and down during assembly, and then assembly time 2.5-3.0h deposits 30min (room temperature
30℃)。
5) once colding pressing: carry out cold moudling in slab is positioned over 400T cold press cold press, pressure of colding pressing is
13MPa, the time of colding pressing is 1.5h.
6) slab core is repaired: carrying out cutting core and repair, unnecessary for slab lap is sliced off, gap, hole central layer bar are filled out
Mend, repair time 2.5h.
7) secondary is colded pressing: carry out cold moudling in being positioned over 400T cold press, and cold pressing pressure 13MPa, and cold pressing time 0.5h.
8) sanding: remove the score of slab and the adhesive tape used by repairing after repairing with abrasive band, sanding at twice: the
Sanding uses 50 mesh abrasive bands, and sanding for the second time uses 70 mesh abrasive bands, secondary sanding time to be 1h.
9) laminating panel: by panel of fitting after slab gluing, gluing uses KTC829C-1 Aqueous Adhesives, its coating weight
Open for 0.55kg/；Then 30min (room temperature 30 DEG C) is deposited；
10) colding pressing for three times: carry out cold moudling in being positioned over 400T cold press, cold pressing pressure 11-13MPa, colds pressing the time
1-1.5h；
11) hot pressing: carry out hot-press gluing in placing the 400T hot press of 4 × 8, it is thus achieved that decorative cover base board.Wherein, heat
Pressure temperature is 110 DEG C, and it is 10Mpa that table shows pressure, and hot pressing time is 4min, and dwell pressure is 3MPa, stops 1 minutes and gets rid of
Steam.
Embodiment 3
The production technology of a kind of aqueous formaldehyde decorative cover base board, comprises the following steps:
1) veneer sorting:
Dash board: sort out lifts, corrugated and the serious sheet material lacking silk of negative and positive wood；Dash board can be as panel and backboard, warp
Cross dried using the moisture control of the dash board as panel to 12-18%, and aqueous using the dash board as backboard
Rate controls at 8-16%；
Central layer: sort out that uneven distribution, moisture is excessive, burr ditch depth, negative and positive wood, Qu Wen, the sheet material of undersize, passes through
Dried by central layer moisture control at 8-16%.
2) central layer joins: by described central layer tightly facing to unified direction, joins with thermosol tree lace, joins out specification
The central layer of 1270mm × 2500mm.
3) laminating backboard: using thread roller glue spreader, adjust glue spreader roller spacing, glue is put into glue groove, central layer passes through
Single spreading is carried out between two rollers；Single spreading uses KTC829C-1 Aqueous Adhesives, and its coating weight is that 0.44kg/ opens；Must
Even spread must be estimated, detect glue-spread.
4) assembly, deposit: according to the most staggered mode of wood grain by described central layer and described backboard group
Base becomes slab, requires that central layer and backboard are put neatly up and down during assembly, and then assembly time 2.5h deposits 50min (room temperature 16
℃)。
5) once colding pressing: carry out cold moudling in slab is positioned over 400T cold press cold press, pressure of colding pressing is
11MPa, the time of colding pressing is 2h；
6) slab core is repaired: carrying out cutting core and repair, unnecessary for slab lap is sliced off, gap, hole central layer bar are filled out
Mend, repair time 2.5h.
7) secondary is colded pressing: carry out cold moudling in being positioned over 400T cold press, and cold pressing pressure 11MPa, and cold pressing time 1h.
8) sanding: remove the score of slab and the adhesive tape used by repairing after repairing with abrasive band, sanding at twice: the
Sanding uses 60 mesh abrasive bands, and sanding for the second time uses 80 mesh abrasive bands, secondary sanding time to be 1h.
9) laminating panel: by panel of fitting after slab gluing, gluing uses KTC829C-1 Aqueous Adhesives, its coating weight
It is that 0.44kg/ opens for its coating weight；Then 50min (room temperature 16 DEG C) is deposited.
10) colding pressing for three times: carry out cold moudling in being positioned over 400T cold press, cold pressing pressure 11-13MPa, colds pressing the time
1-1.5h。
11) hot pressing: carry out hot-press gluing in placing the 400T hot press of 4 × 8, it is thus achieved that decorative cover base board.Wherein, heat
Pressure temperature is 110 DEG C, and it is 10Mpa that table shows pressure, and hot pressing time is 4min, and dwell pressure is 3MPa, stops 1 minutes and gets rid of
Steam.
Embodiment 4
The production technology of a kind of aqueous formaldehyde decorative cover base board, comprises the following steps:
1) veneer sorting:
Dash board: sort out lifts, corrugated and the serious sheet material lacking silk of negative and positive wood；Dash board can be as panel and backboard, warp
Cross dried using the moisture control of the dash board as panel to 12-18%, and aqueous using the dash board as backboard
Rate controls at 8-16%；
Central layer: sort out that uneven distribution, moisture is excessive, burr ditch depth, negative and positive wood, Qu Wen, the sheet material of undersize, passes through
Dried by central layer moisture control at 8-16%.
2) central layer joins: by described central layer tightly facing to unified direction, join out specification 1270mm × 2500mm's
Central layer.
3) laminating backboard: use plain-barreled roll glue spreader, adjust glue spreader roller spacing, glue is put into glue groove, central layer passes through two
Single spreading is carried out between roller；Single spreading uses KTC829C-1 Aqueous Adhesives, and its coating weight is that 0.58kg/ opens；Necessary
Range estimation even spread, detects glue-spread.
4) assembly, deposit: according to the most staggered mode of wood grain by described central layer and described backboard group
Base becomes slab, requires that central layer and backboard are put neatly up and down during assembly, and then assembly time 2.5h deposits 30min (room temperature 25
℃)。
5) once colding pressing: carry out cold moudling in slab is positioned over 400T cold press cold press, pressure of colding pressing is
12MPa, the time of colding pressing is 2h.
6) slab core is repaired: carrying out cutting core and repair, unnecessary for slab lap is sliced off, gap, hole central layer bar are filled out
Mend, repair time 3.0h.
7) secondary is colded pressing: carry out cold moudling in being positioned over 400T cold press, and cold pressing pressure 12MPa, and cold pressing time 1h.
8) sanding: remove the score of slab and the adhesive tape used by repairing after repairing with abrasive band, sanding at twice: the
Sanding uses 40 mesh abrasive bands, and sanding for the second time uses 70 mesh abrasive bands, sanding time 1h.
9) laminating panel: by panel of fitting after slab gluing, gluing uses KTC829C-1 Aqueous Adhesives, its coating weight
Open for 0.58kg/；Then 30min (room temperature 25 DEG C) is deposited.
10) colding pressing for three times: carry out cold moudling in being positioned over 400T cold press, cold pressing pressure 12MPa, colds pressing the time
1.5h。
11) hot pressing: carry out hot-press gluing in placing the 400T hot press of 4 × 8, it is thus achieved that decorative cover base board.Wherein, heat
Pressure temperature is 110 DEG C, and it is 10Mpa that table shows pressure, and hot pressing time is 4min, and dwell pressure is 3MPa, stops 1 minutes and gets rid of
Steam.
Test result:
The technical performance testing result of the decorative cover base board of table 1 embodiment 1 to 4 preparation
Embodiment 1 to 4 acquisition decorative cover base board is entered according to standard GB/T/T 9846-2015 " normal plywood "
Row performance test, table 1 is the technical performance testing result of the decorative cover base board of embodiment 1 to 4 preparation, as seen from Table 1, real
Execute example 1 to 4 and obtain decorative cover base board in terms of moisture content, dipping and stripping, burst size of methanal, bonding strength and cold cycling
Physicochemical property all meets state quota, and especially in terms of burst size of methanal, GB E0 level requires to be not more than 0.5ppm, embodiment 1
Control less than 0.1ppm, the standard of remote super GB E0 level to 4 burst size of methanal obtaining decorative cover base board.
In sum, the KTC829C-1 Diamond Search Aqueous Adhesives that in the present invention, adhesive Jun Shi section used sky produces, this
Glue is applied in decorative cover base board, and process time flow process substantially shortens, and improves production efficiency, and whole flow process is from veneer sorting
Complete less than 16h to hot pressing, use urea-formaldehyde glue, phenol glue the most at least to need 24h just can produce whole flow process.The present invention
The decorative cover base board obtained has environmental protection, free of contamination advantage, and decorative cover base board is made up of panel, central layer and backboard, warp
High Temperature High Pressure compacting forms, and effectively improves that timber is yielding, the defect such as warpage and cracking, has structurally ensured decorative cover
The dimensional stability of base board.So, the present invention effectively overcomes various shortcoming of the prior art and has high industrial and utilize
It is worth.
The above, only presently preferred embodiments of the present invention, not any formal and substantial to present invention restriction,
It should be pointed out that, for those skilled in the art, on the premise of without departing from the inventive method, also can make
Some improvement and supplement, these improve and supplement also should be regarded as protection scope of the present invention.All those skilled in the art,
Without departing from the spirit and scope of the present invention, make when available disclosed above technology contents a little more
The equivalent variations moved, modify and develop, is the Equivalent embodiments of the present invention；Meanwhile, all substantial technological pair according to the present invention
The change of any equivalent variations that above-described embodiment is made, modify and develop, all still fall within the scope of technical scheme
In.
Claims (10)
1. the production technology of an aqueous formaldehyde decorative cover base board, it is characterised in that: comprise the following steps:
1) sheet material sorting:
Dash board: sort out lifts, corrugated and the serious sheet material lacking silk of negative and positive wood；
Central layer: sort out that uneven distribution, moisture is excessive, burr ditch depth negative and positive wood, grai twisted, the sheet material of curtailment；
2) central layer joins: by described central layer tightly facing to unified direction, then joins with thermosol tree lace, joins out required specification chi
Very little central layer；
3) single spreading: described central layer is carried out single spreading with thread roller glue spreader；Single spreading uses Aqueous Adhesives, its
Coating weight is 138.5-182.7g/m2；
4) assembly, deposit: according to the most staggered mode of wood grain, described central layer is become with described backboard assembly
Slab, it is desirable to described central layer and described backboard are put neatly up and down, then deposit 0.5-1h；
5) once cold pressing: in being positioned over cold press, carry out cold moudling；
6) slab core is repaired: sliced off by the unnecessary lap of described slab, the gap of described slab, hole central layer bar are filled out
Mend；
7) secondary is colded pressing: carry out cold moudling in being positioned over cold press；
8) sanding: remove the score of slab and the adhesive tape used by repairing after repairing with abrasive band；
9) gluing veneer: by described panel of fitting after slab gluing, described slab carries out horizontal, vertical with described panel according to texture
To arrangement interlaced with each other, gluing use described Aqueous Adhesives, its coating weight is 138.5-182.7g/m2；Then deposit
0.5-1h；
10) cold pressing for three times: in being positioned over cold press, carry out cold moudling；
11) hot pressing: carry out hot-press gluing in being positioned over hot press.
2. the production technology of aqueous formaldehyde decorative cover base board as claimed in claim 1, it is characterised in that: described water-base cement
Glutinous agent is the water-borne pressure sensitive adhesive that vinyl acetate-ethylene copolymer is modified.
3. the production technology of aqueous formaldehyde decorative cover base board as claimed in claim 1, it is characterised in that: in described step
4), 9) in, when indoor temperature is more than 25 DEG C, described in time of depositing be 30-35min；When room temperature is less than or equal to 25 DEG C, institute
Stating the time deposited is 35-60min.
4. the production technology of aqueous formaldehyde decorative cover base board as claimed in claim 1, it is characterised in that: described step 8)
In sanding at twice: sanding for the first time use 40-60 mesh abrasive band, sanding for the second time use 60-80 mesh abrasive band.
5. the production technology of aqueous formaldehyde decorative cover base board as claimed in claim 1, it is characterised in that: described step
5), 7), 10) described in cold press be 400T cold press, during described cooling molding, table shows pressure is 11-13MPa；Institute
State step 5) in the time of colding pressing be 1.5-2h, described step 7) cool time be 0.5-1h for the time of colding pressing, described step 10)
Cool time be 1-1.5h.
6. the production technology of aqueous formaldehyde decorative cover base board as claimed in claim 1, it is characterised in that: described step
11) hot press described in is 400T hot press, and during described hot-press gluing, hot pressing temperature is 105-115 DEG C, the aobvious pressure of table
Power is 9-11Mpa, and hot pressing time is 3-4min, and dwell pressure is 2-3MPa, and the dwell time is 1-1.5min.
7. the production technology of aqueous formaldehyde decorative cover base board as claimed in claim 1, it is characterised in that: described production work
Skill is additionally included in before described central layer joins step and utilizes vacuum drying cellar for storing things or conventional cellar for storing things to be dried and be dried central layer so that institute
Stating central layer moisture content is 10-18%.
8. the production technology of aqueous formaldehyde decorative cover base board as claimed in claim 1, it is characterised in that: described production work
Vacuum drying cellar for storing things or conventional cellar for storing things is utilized to be dried and described backboard is dried before the step that skill is additionally included in described single spreading,
The moisture content making described backboard is 8-16%.
9. the production technology of aqueous formaldehyde decorative cover base board as claimed in claim 1, it is characterised in that: described production work
Utilize vacuum drying cellar for storing things or conventional cellar for storing things to be dried and described panel is dried before the step that skill is additionally included in described thick china, make
The moisture content obtaining described panel is 12-18%.
10. the decorative cover base board that a kind is prepared from by the production technology as described in claim 1 to 9 is arbitrary.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610547571.6A CN106182219A (en) | 2016-07-12 | 2016-07-12 | A kind of aqueous formaldehyde decorative cover base board and production technology thereof |
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| CN201610547571.6A CN106182219A (en) | 2016-07-12 | 2016-07-12 | A kind of aqueous formaldehyde decorative cover base board and production technology thereof |
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| CN110216749B (en) * | 2019-06-26 | 2021-12-14 | 广西金兔装饰材料有限公司 | Water-based formaldehyde-free decorative panel and production process thereof |
| CN112692938A (en) * | 2020-12-25 | 2021-04-23 | 广西大学 | Preparation method of fir three-layer composite floor base material |
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