CN210477245U - Fire-retardant type impregnated bond paper veneer lumber core board - Google Patents
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- CN210477245U CN210477245U CN201821895649.4U CN201821895649U CN210477245U CN 210477245 U CN210477245 U CN 210477245U CN 201821895649 U CN201821895649 U CN 201821895649U CN 210477245 U CN210477245 U CN 210477245U
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Abstract
The utility model provides a flame-retardant impregnated bond paper veneer lumber core board, which comprises a board core, a middle board, a poplar veneer, decorative bond paper and a flame-retardant adhesive layer, wherein the upper surface and the lower surface of the board core are respectively covered with the middle board and are pressed integrally to form a board blank; the upper surface of the plate core and the middle plate and the lower surface of the plate core and the middle plate are respectively glued and connected through a flame-retardant glue layer, and the flame-retardant glue layer is prepared by coating glue added with 25% of urea glue flame retardant; coating poplar veneers on the upper surface and the lower surface of the plate blank respectively, and integrally forming the plate blank into a substrate through cold and hot pressing, wherein the upper surface of the plate blank and the poplar veneers and the lower surface of the plate blank and the poplar veneers are respectively glued and connected through flame-retardant adhesive layers, and the flame-retardant adhesive layers are prepared by coating glue added with 30% of urea glue flame retardant; and respectively sticking decorative adhesive film paper on the upper surface and the lower surface of the substrate, and performing hot-pressing integrated molding to obtain the flame-retardant impregnated adhesive film paper veneer blockboard.
Description
Technical Field
The utility model belongs to the panel processing field relates to an impregnated bond paper veneer lumber core board, especially relates to a fire-retardant type impregnated bond paper veneer lumber core board.
Background
The occurrence of fire is often directly related to the use of combustibles that have not been flame retardant treated. It was analyzed that 21% of fires were caused by fibrous materials such as wood, and 70% of residential fires were caused by wood materials lacking in flame retardancy. With the continuous development of economic construction in China and the improvement of the living standard of people, people put forward higher requirements on the aspects of beauty, comfort and other functions of building and decoration plates. The common building and decoration board can not meet the social demand far away, and the flame-retardant board is widely applied to various fields as a novel environment-friendly protection board.
Melamine impregnated bond paper veneer lumber core is a neotype environmental protection dalle, because it has characteristics such as high temperature resistant, acid and alkali-resistance, moisture resistance, and the surface is difficult for discolouring, peeling, and easy processing, economic environmental protection, so the demand in the house ornamentation field is more and more big, is loved by the consumer deeply. However, the existing solid wood flame-retardant boards in the market mainly comprise flame-retardant plywood and flame-retardant laminated wood boards, the common impregnated bond paper veneer laminated wood board has poor flame-retardant effect, and the flame-retardant impregnated bond paper veneer laminated wood board does not exist in the true sense.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned problem in the background art, the utility model provides a fire-retardant type impregnated bond paper veneer lumber core board has effectively solved above-mentioned defect, has improved the fire behaviour of impregnated bond paper veneer lumber core board, and green can satisfy people's various house ornamentation demands simultaneously.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the provided flame-retardant laminated wood board with the impregnated bond paper veneer comprises a board core, a middle board, a poplar veneer, decorative bond paper and a flame-retardant adhesive layer, wherein the upper surface and the lower surface of the board core are respectively covered with the middle board and are integrally pressed to form a board blank; the upper surface of the plate core and the middle plate and the lower surface of the plate core and the middle plate are respectively glued and connected through a flame-retardant glue layer, and the flame-retardant glue layer is prepared by coating glue added with 25% of urea glue flame retardant; covering poplar veneers on the upper surface and the lower surface of the plate blank respectively, and integrally forming the plate blank into a substrate through cold and hot pressing, wherein the upper surface of the plate blank and the poplar veneers and the lower surface of the plate blank and the poplar veneers are respectively glued and connected through flame-retardant adhesive layers, and the flame-retardant adhesive layers are prepared by coating glue added with 30% of urea glue flame retardant; and respectively sticking decorative adhesive film paper on the upper surface and the lower surface of the substrate, and performing hot-pressing integrated molding to obtain the finished product of the flame-retardant impregnated adhesive film paper veneer blockboard.
Wherein: the board core is a fir or malachite board core; the middle plate is a eucalyptus middle plate or a poplar middle plate; the decorative adhesive film paper is melamine impregnated adhesive film paper, and the flame-retardant adhesive layer is prepared by coating glue added with a urea-formaldehyde glue flame retardant.
Based on the utility model provides a fire-retardant type impregnated bond paper veneer lumber core board still provides a production technology of fire-retardant type impregnated bond paper veneer lumber core board, specifically includes following step:
selecting the middle plates in the step (1): selecting a better middle plate without the defects of cracking, falling holes, pollution, overlapping, decay and the like on the surface;
splicing the middle plates in the step (2): splicing the middle plates into a middle plate with a required size through a splicing machine, wherein the required size is 2470-2500 mm in length and 1250-1300 mm in width;
and (3) selecting the plate core: selecting a plate core with good flatness and no surface defect;
sanding the plate core: sanding the surface of the selected board core to ensure the flatness of the board core;
and (5) glue mixing: mixing glue, and adding 25% of urea-formaldehyde glue flame retardant;
step (6), gluing the board core: uniformly distributing the prepared glue on the sanded plate core through a glue spreader to obtain a flame-retardant glue layer, wherein the glue spreading amount is 250 g/square meter;
step (7), infrared panel assembly: sequentially arranging the spliced middle plates on the glued plate cores, wherein each plate must be orderly arranged according to the infrared ray marks when being placed;
step (8) cold pressing: carrying out cold pressing treatment on the assembled middle plate and the assembled plate core for 60-90 minutes, and controlling the pressure at 10-14 mpa to obtain a preliminarily molded plate blank semi-finished product;
step (9), core cutting: repairing the semi-finished product of the plate blank with defects on the front side and the back side after cold pressing;
step (10) hot pressing: the curing of the adhesive layer is accelerated through hot pressing, the water content of the adhesive layer is controlled, the hot pressing temperature is 120-123 ℃, the time is controlled to be 9 minutes of pressure and 8 minutes of exhaust, the pressure is 10-12 mpa, and the water content of the pressed plate is controlled to be below 14%;
step (11) putty scraping: carrying out flatness treatment on defects existing in the front and back surfaces of the plate blank semi-finished product;
step (12) health preserving: placing each greased plate in a separated mode by using a wood strip, and placing the plates in a natural environment for ventilation and health maintenance for about 4-5 days;
sanding in step (13): sanding and sanding the greased plate blank semi-finished product to ensure the flatness and the smoothness of the plate blank semi-finished product;
step (14) half detection: inspecting the semi-finished product of the plate blank, and if the semi-finished product of the plate blank is unqualified, repairing or sanding again;
and (15) secondary putty scraping: carrying out flatness careful treatment on the defects on the front and back surfaces of the sanded plate blank semi-finished product again;
and (16) sanding for the second time: carrying out flatness sanding on the semi-finished plate blank to meet the requirement of required quality flatness;
step (17) glue mixing: mixing glue, and adding 30% of urea-formaldehyde glue flame retardant;
step (18), cloth adhesive veneering: uniformly distributing glue on the semi-finished product of the plate blank subjected to secondary sanding by using a glue distributor to obtain a flame-retardant glue layer, wherein the glue distribution amount is 300 g/square meter, and then, orderly pasting poplar veneers on two sides of the plate blank to obtain a substrate;
step (19) cold pressing of the substrate: cold pressing the veneered substrate for 40-50 minutes at a pressure of 12-14 mpa;
step (20), cutting edges of the substrate: cutting off redundant poplar veneers around the substrate by using a knife, and repairing the defects of the surface veneers;
step (21) hot pressing of the substrate: the curing of the glue layer is accelerated by heat, and the water content of the substrate is controlled, because the water content of the plate blank is stable, and after the plate blank is grooved, the water content is stable below 14% after further hot pressing, the hot pressing temperature is 118-120 ℃, the hot pressing time is 6 minutes + the exhaust time is 1 minute, and the pressure is 10-12 mpa;
step (22) putty scraping of the substrate: carrying out flatness treatment on defects existing in the front and back surfaces of the substrate;
and (23) sanding the substrate in a fixed thickness: sanding the greased substrate in a fixed thickness to achieve the substrate with required quality, flatness and thickness;
step (24), sawing the edge of the substrate: carrying out edge sawing treatment on the substrate according to standard requirements, wherein the length of the substrate is 2440mm, and the width of the substrate is 1220 mm;
step (25) of substrate inspection: inspecting and selecting the sawn substrate;
step (26) substrate repair: repairing the substrate with the defects;
step (27), pressing and pasting decorative adhesive film paper on the substrate: and carrying out hot-pressing lamination on the substrate and the decorative adhesive film paper, wherein the temperature is 118-125 ℃, the pressure is 9-11 mpa, and the time is 6.5-8 minutes.
And (28) inspecting and packaging finished products for warehousing: inspecting and packaging the hot-pressed flame-retardant impregnated bond paper veneer blockboard; wherein the water content is controlled within 14%.
The preferable middle plate in the step (29) has no defects of cracking, falling off, cavities, pollution, overlapping, decay and the like on the surface;
and (30) preferably, the plate core is a finger joint or flat joint plate core with good flatness and no defect on the surface.
Preferably, the board core is a fir or melphalan board core; the middle plate is a eucalyptus middle plate or a poplar middle plate; the decorative adhesive film paper is melamine impregnated adhesive film paper.
Compared with the existing impregnated bond paper veneer lumber core board technology, the utility model adopts the method that the impregnated bond paper is directly pressed and pasted on the surface of the veneer lumber core board, the process is simple and reasonable, the surface evenness of the finished product is better, and simultaneously, the low-formaldehyde E0 grade base board is adopted, thereby greatly reducing the formaldehyde content of the finished product, the flame retardant property of the impregnated bond paper veneer lumber core board is greatly improved through 4 layers of coated flame retardant glue layers, the flame retardant property can reach B1-C grade and above through detection, and the home decoration safety of people is ensured;
the utility model has the advantages that: 1. the low-formaldehyde E0-grade environment-friendly joinery base plate is adopted, and the prepared finished product formaldehyde can reach below 0.4mg/l, so that the method is economic and environment-friendly; 2. 4 layers of flame-retardant adhesive layers are coated, so that the flame retardant property of the impregnated bond paper veneer lumber core board is greatly improved, and the flame retardant property can reach B1-C level or above through detection; 3. the flame-retardant impregnated bond paper veneer lumber core board can meet the requirements of all-weather and all-region use, and the finished product surface has better flatness and glossiness by adopting the one-time film coating method direct pasting process.
Drawings
FIG. 1 is a structural diagram of the flame-retardant impregnated bond paper facing core-board of the present invention;
FIG. 2 is a flow chart of a production process of the flame-retardant impregnated bond paper veneer lumber core board;
the attached drawings are marked as follows: the plate comprises a plate core 1, a middle plate 2, a poplar veneer 3, decorative adhesive film paper 4 and a flame-retardant adhesive layer 5.
Detailed Description
The following describes in detail an embodiment of the present invention with reference to the drawings.
As shown in fig. 1-2, the utility model provides a concrete example of fire-retardant type impregnated bond paper veneer lumber core board, this fire-retardant type impregnated bond paper veneer lumber core board includes board core 1, medium plate 2, poplar veneer 3, decorative bond paper 4 and fire-retardant glue film 5, board core 1 upper surface, lower surface cover medium plate 2 respectively and integrative pressfitting constitutes the slab; the upper surface of the plate core 1 and the middle plate and the lower surface of the plate core 1 and the middle plate 2 are respectively connected by gluing through a flame-retardant glue layer 5, the flame-retardant glue layer 5 is prepared by adding glue with 25 percent of urea-formaldehyde glue flame retardant through coating, and the glue coating amount is 250 g/square meter; covering poplar veneers 3 on the upper surface and the lower surface of the plate blank respectively, and integrally forming the plate blank by cold and hot pressing to form a substrate, wherein the upper surface of the plate blank and the poplar veneers 3 as well as the lower surface of the plate blank and the poplar veneers 3 are respectively glued and connected through flame-retardant adhesive layers 5, the flame-retardant adhesive layers 5 are prepared by coating glue added with 30 percent of urea glue flame retardant, and the glue coating amount is 300 g/square meter; and respectively sticking decorative adhesive film paper 4 on the upper surface and the lower surface of the substrate, and performing hot-pressing integrated molding to obtain the finished product of the flame-retardant impregnated adhesive film paper veneer blockboard.
Meanwhile, the embodiment also provides a production process of the flame-retardant impregnated bond paper veneer lumber core board, which comprises the following steps:
selecting a plate 2 in the step (1): selecting a better middle plate without the defects of cracking, falling holes, pollution, overlapping, decay and the like on the surface;
splicing the plates 2 in the step (2): splicing the middle plates into a middle plate with a required size through a splicing machine, wherein the required size is 2470-2500 mm in length and 1250-1300 mm in width;
and (3) selecting the plate core 1: selecting a plate core 1 with good flatness and no surface defect;
sanding the plate core 1: carrying out surface sanding treatment on the selected board core 1 to ensure the flatness of the board core 1;
and (5) glue mixing: mixing glue, and adding 25% of urea-formaldehyde glue flame retardant;
step (6), gluing the board core 1: uniformly distributing the prepared glue on the sanded plate core through a glue spreader to obtain a flame-retardant glue layer 5, wherein the glue spreading amount is 250 g/square meter;
step (7), infrared panel assembly: sequentially arranging the spliced middle plates 2 on the glued plate cores 1, wherein each plate must be orderly arranged according to the infrared ray marks when being placed;
step (8) cold pressing: carrying out cold pressing treatment on the assembled middle plate 2 and the plate core 1 for 60-90 minutes under the pressure of 10-14 mpa to obtain a preliminarily molded plate blank semi-finished product;
step (9), core cutting: repairing the semi-finished product of the plate blank with defects on the front side and the back side after cold pressing;
step (10) hot pressing: the curing of the adhesive layer is accelerated through hot pressing, the water content of the adhesive layer is controlled, the hot pressing temperature is 120-123 ℃, the time is controlled to be 9 minutes of pressure and 8 minutes of exhaust, the pressure is 10-12 mpa, and the water content of the pressed plate is controlled to be below 14%;
step (11) putty scraping: carrying out flatness treatment on defects existing in the front and back surfaces of the plate blank semi-finished product;
step (12) health preserving: placing each greased plate in a separated mode by using a wood strip, and placing the plates in a natural environment for ventilation and health maintenance for about 4-5 days;
sanding in step (13): sanding and sanding the greased plate blank semi-finished product to ensure the flatness and the smoothness of the plate blank semi-finished product;
step (14) half detection: inspecting the semi-finished product of the plate blank, and if the semi-finished product of the plate blank is unqualified, repairing or sanding again;
and (15) secondary putty scraping: carrying out flatness careful treatment on the defects on the front and back surfaces of the sanded plate blank semi-finished product again;
and (16) sanding for the second time: carrying out flatness sanding on the semi-finished plate blank to meet the requirement of required quality flatness;
step (17) glue mixing: mixing glue, and adding 30% of urea-formaldehyde glue flame retardant;
step (18), cloth adhesive veneering: uniformly distributing glue on the semi-finished product of the plate blank subjected to secondary sanding by a glue distributor to obtain a flame-retardant glue layer 5, wherein the glue distribution amount is 300 g/square meter, and then orderly attaching the poplar veneer 3 to two sides of the plate blank to obtain a substrate;
step (19) cold pressing of the substrate: cold pressing the veneered substrate for 40-50 minutes at a pressure of 12-14 mpa;
step (20), cutting edges of the substrate: cutting off redundant poplar veneers 3 around the substrate by using a knife, and repairing the defects of the surface veneers 3;
step (21) hot pressing of the substrate: the curing of the glue layer is accelerated by heat, and the water content of the substrate is controlled, because the water content of the plate blank is stable, and after the plate blank is grooved, the water content is stable below 14% after further hot pressing, the hot pressing temperature is 118-120 ℃, the hot pressing time is 6 minutes + the exhaust time is 1 minute, and the pressure is 10-12 mpa;
step (22) putty scraping of the substrate: carrying out flatness treatment on defects existing in the front and back surfaces of the substrate;
and (23) sanding the substrate in a fixed thickness: sanding the greased substrate in a fixed thickness to achieve the substrate with required quality, flatness and thickness;
step (24), sawing the edge of the substrate: carrying out edge sawing treatment on the substrate according to standard requirements, wherein the length of the substrate is 2440mm, and the width of the substrate is 1220 mm;
step (25) of substrate inspection: inspecting and selecting the sawn substrate;
step (26) substrate repair: repairing the substrate with the defects;
step (27), pressing and pasting decorative adhesive film paper on the substrate: and carrying out hot-pressing lamination on the substrate and the decorative adhesive film paper 4, wherein the temperature is 118-125 ℃, the pressure is 9-11 mpa, and the time is 6.5-8 minutes.
And (28) inspecting and packaging finished products for warehousing: inspecting and packaging the hot-pressed flame-retardant impregnated bond paper veneer blockboard; wherein the water content is controlled within 14%.
The preferable middle plate 2 in the step (29) has no defects of cracking, falling off, cavities, pollution, overlapping, decay and the like on the surface;
and (30) preferably, the plate core 1 is a finger joint or flat joint plate core with good flatness and no defect on the surface.
Preferably, the board core 1 is a fir or a melphalan board core; the middle plate 2 is a eucalyptus middle plate or a poplar middle plate; the decorative adhesive film paper 4 is melamine impregnated adhesive film paper.
Compared with the existing impregnated bond paper veneer lumber core board technology, the utility model adopts the method that the impregnated bond paper is directly pressed and pasted on the surface of the veneer lumber core board, the process is simple and reasonable, the surface evenness of the finished product is better, and simultaneously, the low-formaldehyde E0 grade base board is adopted, thereby greatly reducing the formaldehyde content of the finished product, the flame retardant property of the impregnated bond paper veneer lumber core board is greatly improved through 4 layers of coated flame retardant glue layers, the flame retardant property can reach B1-C grade and above through detection, and the home decoration safety of people is ensured;
the utility model has the advantages that: 1. the low-formaldehyde E0-grade environment-friendly joinery base plate is adopted, and the prepared finished product formaldehyde can reach below 0.4mg/l, so that the method is economic and environment-friendly; 2. 4 layers of flame-retardant adhesive layers are coated, so that the flame retardant property of the impregnated bond paper veneer lumber core board is greatly improved, and the flame retardant property can reach B1-C level or above through detection; 3. the flame-retardant impregnated bond paper veneer lumber core board can meet the requirements of all-weather and all-region use, and the finished product surface has better flatness and glossiness by adopting the one-time film coating method direct pasting process.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The utility model provides a fire-retardant type impregnated bond paper veneer lumber core board which characterized in that: the plate comprises a plate core (1), a middle plate (2), a poplar veneer (3), decorative adhesive film paper (4) and a flame-retardant adhesive layer (5), wherein the upper surface and the lower surface of the plate core (1) are respectively covered with the middle plate (2) and are integrally pressed to form a plate blank; the upper surface of the plate core (1) is connected with the middle plate, and the lower surface of the plate core (1) is connected with the middle plate (2) through the flame-retardant glue layer (5) in a gluing way;
the upper surface and the lower surface of the plate blank are respectively covered with poplar veneers (3) and are integrally formed into a substrate through cold and hot pressing, and the upper surface of the plate blank and the poplar veneers (3) as well as the lower surface of the plate blank and the poplar veneers (3) are respectively glued and connected through flame-retardant glue layers (5); and respectively sticking decorative adhesive film paper (4) on the upper surface and the lower surface of the substrate, and performing hot-pressing integrated molding to obtain the finished product of the flame-retardant impregnated adhesive film paper veneer blockboard.
2. The flame retardant impregnated bond paper faced blockboard according to claim 1, wherein: the middle plate (2) is a eucalyptus middle plate or a poplar middle plate.
3. The flame retardant impregnated bond paper faced blockboard according to claim 1, wherein: the plate core (1) is a finger-jointed fir or a sextant plate core (1).
4. The flame retardant impregnated bond paper faced blockboard according to claim 1, wherein: the decorative adhesive film paper (4) is melamine impregnated adhesive film paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821895649.4U CN210477245U (en) | 2018-11-15 | 2018-11-15 | Fire-retardant type impregnated bond paper veneer lumber core board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821895649.4U CN210477245U (en) | 2018-11-15 | 2018-11-15 | Fire-retardant type impregnated bond paper veneer lumber core board |
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| Publication Number | Publication Date |
|---|---|
| CN210477245U true CN210477245U (en) | 2020-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821895649.4U Active CN210477245U (en) | 2018-11-15 | 2018-11-15 | Fire-retardant type impregnated bond paper veneer lumber core board |
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| Country | Link |
|---|---|
| CN (1) | CN210477245U (en) |
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2018
- 2018-11-15 CN CN201821895649.4U patent/CN210477245U/en active Active
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