CN112277409A - Anti-cracking impregnated bond paper veneer and preparation method thereof - Google Patents
Anti-cracking impregnated bond paper veneer and preparation method thereof Download PDFInfo
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- CN112277409A CN112277409A CN202011281357.3A CN202011281357A CN112277409A CN 112277409 A CN112277409 A CN 112277409A CN 202011281357 A CN202011281357 A CN 202011281357A CN 112277409 A CN112277409 A CN 112277409A
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Images
Classifications
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- 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
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/14—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood board or veneer
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G11/00—Applying adhesives or glue to surfaces of wood to be joined
-
- 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
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/02—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board the layer being formed of fibres, chips, or particles, e.g. MDF, HDF, OSB, chipboard, particle board, hardboard
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- 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
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B21/06—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
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- 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
- B32B29/00—Layered products comprising a layer of paper or cardboard
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- 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
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- 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
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- 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
- B32B37/1207—Heat-activated adhesive
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- 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
- B32B37/1284—Application of adhesive
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B32B37/1207—Heat-activated adhesive
- B32B2037/1215—Hot-melt adhesive
Abstract
The invention discloses a cracking-resistant impregnated bond paper veneer and a preparation method thereof, wherein the veneer comprises a core layer, the upper surface and the lower surface of the core layer are sequentially provided with a PUR hot melt adhesive layer and a flexible curing bond paper layer, the PUR hot melt adhesive attaches the core layer and the flexible curing bond paper, the bonding and the separation of the internal crack tension of the core layer and the flexible curing bond paper layer are realized, the surface cracking resistance of the veneer is greatly improved, the flexible curing bond paper layer comprises impregnated bond paper and fiber paper, the surface of the fiber paper is provided with grains, the impregnated bond paper and the fiber paper are subjected to hot pressing to form a flexible curing bond paper layer, and the flexible curing bond paper layer has excellent tensile property. According to the preparation method of the crack-resistant impregnated bond paper veneer, the impregnated bond paper and the fiber paper are bonded into a whole in a hot pressing mode, the tensile strength of the impregnated bond paper is improved, and the flexible cured bond paper is flatly pasted or pressed on the surface of the core layer through the PUR hot melt adhesive, so that the operation is simple, the realization is easy, and the popularization and the application in manufacturers are facilitated.
Description
Technical Field
The invention relates to the technical field of decorative plates, in particular to a crack-resistant impregnated bond paper veneer and a preparation method thereof.
Background
The artificial board with impregnated paper as facing is produced through hot pressing and has the excellent performance of low material requirement, wide material source, high timber utilization, great product size and high machinability. The sandwich layer of impregnated bond paper decorative board usually includes middle interior sandwich layer and sets up in the wooden cortex of surface about the interior sandwich layer, and impregnated bond paper decorative layer is laminated in wooden cortex surface through the mode of hot pressing usually, and such structure has the characteristics that the higher degree utilized timber, but has following problem: (1) the surface of the wood skin layer is easy to crack when the wood skin layer is used in northern areas due to the anisotropy of wood grains, and when the wood skin layer is more serious, the inner core layer is also cracked due to inconsistent shrinkage in the environment with large temperature difference in northern areas, so that the impregnated bond paper veneer cannot be used in northern areas; (2) due to the fact that the wood skin layer on the surface is provided with the splicing gaps or tree knots, when the impregnated bond paper is pasted in a hot pressing mode, unevenness easily occurs, or glue white spots appear in the sunken positions, and the appearance and the quality of products are seriously affected.
Aiming at the problem of cracking, in the prior art, a carbon fiber material layer and a wood buffer layer are added between a core layer and impregnated bond paper, and the tensile strength of the impregnated bond paper is improved through the carbon fiber layer and the wood buffer layer, so that the problem of surface cracking is solved. In the prior art, the problem of inconsistent internal shrinkage of the core layer is solved by coating the surface of the core layer with the formaldehyde-free soybean glue, so that the surface cracking phenomenon is solved, but the preparation method of the core layer is complex, is difficult to implement in actual production and cannot be popularized in the market.
It is seen that improvements and enhancements to the prior art are needed.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide the anti-cracking impregnated bond paper veneer and the preparation method thereof, and aims to solve the problem that the impregnated bond paper veneer in the prior art is easy to crack when used in northern areas. .
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a resistant flooding glued membrane paper decorative board that splits, includes the sandwich layer, wherein, the upper and lower surface of sandwich layer all is equipped with PUR hot melt adhesive layer, flexible solidification glued membrane ply in proper order, PUR hot melt adhesive is laminated sandwich layer and flexible solidification glued membrane paper, flexible solidification glued membrane ply includes flooding glued membrane paper and cellophane, the surface of cellophane is equipped with the line, flooding glued membrane paper passes through the hot pressfitting with cellophane and forms flexible solidification glued membrane ply.
In the crack-resistant impregnated bond paper veneer, the PUR hot melt adhesive is a moisture curing reaction type polyurethane hot melt adhesive.
In the crack-resistant impregnated bond paper veneer, the impregnated bond paper is impregnated with mildew-proof antibacterial liquid.
In the crack-resistant impregnated bond paper veneer, the fiber paper comprises one of non-woven paper and glass fiber paper.
In the anti-cracking impregnated bond paper veneer, the core layer comprises one of plywood, a shaving board, a fiberboard, a core board and a composite board.
In the crack-resistant impregnated bond paper veneer, the mode of attaching the core layer and the flexible curing bond paper comprises one or two of pressing and flat attaching.
A preparation method of a crack-resistant impregnated bond paper veneer is provided, wherein the crack-resistant impregnated bond paper veneer is the above crack-resistant impregnated bond paper veneer, and the preparation method comprises the following steps: coating PUR thermosol on the surface of the core layer, scraping, sticking the flexible curing adhesive film paper on the surface of the core layer in a pressing or flat sticking mode, curing, performing the same treatment on the other surface of the core layer, and curing at the temperature of below 30 ℃ for 48 hours to obtain the composite impregnated adhesive film veneer.
In the preparation method of the crack-resistant impregnated bond paper veneer, the gluing thickness of the PUR thermosol is 0.04-0.06 mm, and the gluing amount is 50-70 g/m2。
In the preparation method of the crack-resistant impregnated bond paper veneer, in the pressing and pasting mode, the temperature of a press is 110-130 ℃, the unit pressure is 0.8-1.2, and the pressing and pasting time is 10-15 s.
In the preparation method of the crack-resistant impregnated bond paper veneer, the preparation method further comprises the preparation of flexible cured bond paper, and the specific steps comprise: and laying a layer of fiber paper and impregnated bond paper on a hot press, hot-pressing for 15-100 s at the temperature of 120-200 ℃ and the unit pressure of 1.0-2.0 MPa, and cooling and curing to obtain the flexible curing bond paper.
Has the advantages that:
the invention provides a cracking-resistant impregnated bond paper veneer and a preparation method thereof, the cracking-resistant impregnated bond paper veneer modifies impregnated bond paper through fiber paper, the surface of the fiber paper is provided with grains, the cracking-resistant impregnated bond paper veneer has the effect of reducing the tension of a core layer on the impregnated bond paper and has a buffering effect, so that flexible cured bond paper with excellent tensile property is obtained, meanwhile, the flexible cured bond paper is adhered to the surface of the core layer through PUR hot melt adhesive, the PUR hot melt adhesive not only has excellent adhesion property, but also can isolate the internal crack tension of the core layer from the flexible cured bond paper layer due to better elasticity and toughness, so that the tension of the flexible cured bond paper on the surface layer is reduced, and the surface cracking resistance of the veneer is greatly improved. According to the preparation method of the anti-cracking impregnated bond paper veneer, the impregnated bond paper and the fiber paper are hot-pressed into a whole, so that the tensile strength of the impregnated bond paper is improved, the flexible cured bond paper is flatly pasted or pressed on the surface of the core layer through the PUR hot melt adhesive, the operation is simple, the implementation is easy, and the popularization and the application in manufacturers are facilitated.
Drawings
Fig. 1 is a schematic structural view of the crack-resistant impregnated bond paper veneer provided by the invention.
Fig. 2 is a schematic structural diagram of the fibrous paper with the scaly texture on the surface.
Fig. 3 is a schematic structural diagram of the fiber paper with a grid on the surface.
Detailed Description
The invention provides a crack-resistant impregnated bond paper veneer and a preparation method thereof, and in order to make the purpose, technical scheme and effect of the invention clearer and clearer, the invention is further described in detail by referring to the attached drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a cracking-resistant impregnated bond paper veneer, which comprises a core layer 1, PUR hot melt adhesive layers 2 arranged on the upper surface and the lower surface of the core layer, and flexible cured bond paper layers 3 attached to the upper surface and the lower surface of the core layer through PUR hot melt adhesives. The sandwich layer 1 comprises one of plywood, a shaving board, a fiber density board, a core board and a composite artificial board and is a main body structure of the veneer, the structures of the plywood, the shaving board, the fiber density board, the core board and the composite artificial board are all composite structures internally provided with a middle sandwich layer, and the upper surface and the lower surface of the middle sandwich layer are both provided with wood skins.
PUR hot melt adhesive layer 2 is flexible moisture curing reaction type polyurethane hot melt adhesive, and it is short to have a consolidation time, and the adhesion is strong, and is cold-resistant, the heat resistance is good, and PUR adhesive layer is soft after the solidification, has better flexible performance, can keep apart the flexible curing adhesive film ply on top layer and sandwich layer, and under the great condition of sandwich layer shrink, it is little to guarantee the tension that the top layer received to avoid the top layer to appear cracked phenomenon because of the shrink deformation of sandwich layer.
The flexible curing adhesive film paper layer 3 comprises impregnated adhesive film paper and fiber paper, the impregnated adhesive film paper is impregnated melamine impregnated paper and can provide patterns or textures for the veneer, the fiber paper comprises non-woven paper or glass fiber paper and has high toughness, lines such as fish scales or grids (shown in fig. 2 and fig. 3) are arranged on the surface of the fiber paper, the lines are not limited to the two lines, the lines have the effect of reducing the tension of the core layer, the side, without the textures, of the impregnated adhesive film paper and the fiber paper are tightly combined through hot pressing, and the melamine glue in the impregnated adhesive film paper penetrates through the fiber paper and adheres the fiber paper into a whole. The tensile strength of impregnated bond paper can be showing to improve on the one hand of cellophane, and on the other hand, the scale line or the net that cellophane surface set up have the tensile effect of buffering sandwich layer to when making when the inside appearance of sandwich layer is cracked, impregnated bond paper still can remain intact.
According to the anti-cracking impregnated bond paper veneer with the structure, the core layer is attached to the surface layer through the PUR hot melt adhesive, and the attaching mode comprises one or two of pressing and flat attaching. The pressing and pasting is to press and paste the flexible cured adhesive film paper on the surface of the core layer coated with the PUR hot melt adhesive through certain pressure, the pressing and pasting mode is efficient and rapid, and the surface strength of the veneer is also improved. The flat pasting is to paste the flexible curing adhesive film paper on the surface of the core layer coated with the PUR hot melt adhesive, the pasting process is not applied with pressure, the pasting speed is low, but the thickness and the flexibility of the pasted PUR hot melt adhesive layer are kept better, the isolation capability of the tension generated by the core layer is better, and therefore the anti-cracking effect is better. Preferably, the attaching mode comprises flat attaching and pressing attaching, namely, one surface of the veneer is firstly attached with one layer of flexible curing adhesive film paper in the flat attaching mode, then the other surface of the veneer is pressed with one layer of flexible curing adhesive film paper, and the flat attaching and the pressing attaching are combined, so that the anti-cracking capacity and the surface strength of the veneer are improved.
The anti-cracking impregnated bond paper veneer of above-mentioned structure through setting up PUR hot melt adhesive layer, can be completely cut off the tension that the inside deformation of sandwich layer produced, makes the flexible solidification glued membrane paper layer in surface receive stress and reduces, simultaneously, improves impregnated bond paper's tensile strength through cellophane to the cracked problem of impregnated bond veneer has been solved.
A preparation method of a crack-resistant impregnated bond paper veneer comprises the following steps: by passingMelting the PUR hot melt adhesive by a glue melting machine at the melting temperature of 110-130 ℃, then blowing the surface of the core layer clean by blowing equipment, and coating the surface of the core layer with the PUR hot melt adhesive, wherein the gluing thickness of the PUR hot melt adhesive is 0.04-0.06 mm, and the gluing amount is 50-70 g/m2And leveling by a leveling device, sticking the flexible curing adhesive film paper on the surface of the core layer in a pressing or flat sticking mode, curing, performing the same treatment on the other surface of the core layer, and curing at the temperature of below 30 ℃ for 48 hours to obtain the composite impregnated adhesive film veneer. It should be noted that the melting temperature cannot be too high or too low, the viscosity is directly influenced by the melting temperature, the temperature is too high, so that the viscosity is low, the gluing amount is influenced, the thickness of the formed adhesive film layer is too thin, the internal tension is difficult to isolate, and the melting temperature is too low, so that the PUR hot melt adhesive is difficult to melt completely, the viscosity is reduced, and the insufficient adhesion is easily caused. When the melting temperature is 110-2In the process, the adhesion of the PUR adhesive film layer is good, the isolation capability of the PUR adhesive film layer to the internal tension of the core layer is good, and the anti-cracking performance is high.
In the preparation method of the anti-cracking impregnated bond paper veneer, when a pressing and pasting mode is adopted as a pasting mode of the flexible curing bond paper and the core layer, the temperature of a press of a hot press is 110-130 ℃, the unit pressure is 0.8-1.2, the pressing and pasting time is 10-15 s, and the flexible curing bond paper can be quickly adhered to the core layer through pressing and pasting.
The preparation method of the crack-resistant impregnated bond paper veneer comprises the following steps of preparing flexible cured bond paper: and laying a layer of fiber paper and impregnated bond paper on a hot press, hot-pressing for 15-100 s at the temperature of 120-200 ℃ and the unit pressure of 1.0-2.0 MPa, and cooling and curing to obtain the flexible curing bond paper. In the hot pressing process, the melamine glue in the impregnated bond paper permeates into the fiber paper, the impregnated paper and the fiber paper are adhered into a whole, the pattern and the texture of the impregnated paper on the surface of the obtained flexible curing bond paper are provided, and simultaneously, the toughness and the tensile strength of the flexible curing bond paper are stronger due to the action of the fiber paper.
Example 1
The utility model provides a resistant flooding glued membrane paper decorative board that splits, the decorative board includes flexible solidification glued membrane paper, PUR hot melt adhesive layer, plywood, PUR hot melt adhesive layer, flexible solidification glued membrane paper, the PUR hot melt adhesive is moisture curing reaction type polyurethane hot melt adhesive, flexible solidification glued membrane paper includes flooding glued membrane paper and non-woven paper, the non-woven paper surface is equipped with the grid texture.
The preparation method of the anti-cracking impregnated bond paper veneer comprises the following steps:
(1) preparing flexible curing adhesive film paper: and laying a layer of non-woven paper and impregnated bond paper on a hot press, carrying out hot pressing at the temperature of 150 ℃ and the unit pressure of 1.5MPa for 20s, and cooling and curing to obtain the flexible curing bond paper.
(2) Compounding: melting the PUR hot melt adhesive through a glue dissolving machine, wherein the melting temperature is 120 ℃, then blowing the surface of the core layer clean through blowing equipment, coating the molten PUR hot melt adhesive on the surface of the plywood, wherein the gluing thickness is 0.05mm, and the gluing amount is 60g/m2And leveling by a leveling device, flatly pasting the flexible curing adhesive film paper on the surface of the plywood, flatly pasting a layer of flexible curing adhesive film paper on the other surface of the plywood by using a PUR hot melt adhesive after curing, and curing at the temperature lower than 30 ℃ for 48 hours to obtain the anti-cracking impregnated adhesive film veneer.
Example 2
The utility model provides a resistant flooding glued membrane paper decorative board that splits, the decorative board includes flexible solidification glued membrane paper, PUR hot melt adhesive layer, shaving board, PUR hot melt adhesive layer, flexible solidification glued membrane paper, the PUR hot melt adhesive is moisture curing reaction type polyurethane hot melt adhesive, flexible solidification glued membrane paper is including flooding glued membrane paper and the fine paper of glass, the fine paper surface of glass is equipped with the fish scale texture.
The preparation method of the crack-resistant impregnated bond paper veneer of the embodiment 2 comprises the following steps:
(1) preparing flexible curing adhesive film paper: and laying a layer of glass fiber paper and impregnated bond paper on a hot press, carrying out hot pressing for 15s at the hot pressing temperature of 200 ℃ and the unit pressure of 1.0MPa, and cooling and curing to obtain the flexible curing bond paper.
(2) Compounding: by solMelting the PUR hot melt adhesive by the machine at 110 ℃, coating the molten PUR hot melt adhesive on the surface of the cleaned shaving board, wherein the gluing thickness is 0.06mm, and the gluing amount is 70g/m2And scraping, flatly pasting the flexible curing adhesive film paper on the surface of the shaving board, flatly pasting a layer of flexible curing adhesive film paper on the other surface of the shaving board by using PUR hot melt adhesive after curing, and then curing for 48 hours at the temperature lower than 30 ℃ to obtain the anti-cracking impregnated adhesive film veneer.
Example 3
The utility model provides a resistant flooding glued membrane paper decorative board that splits, the decorative board includes flexible solidification glued membrane paper, PUR hot melt adhesive layer, fibreboard, PUR hot melt adhesive layer, flexible solidification glued membrane paper, the PUR hot melt adhesive is moisture curing reaction type polyurethane hot melt adhesive, flexible solidification glued membrane paper includes flooding glued membrane paper and non-woven paper, the non-woven paper surface is equipped with the fish scale texture.
The preparation method of the crack-resistant impregnated bond paper veneer of embodiment 3 comprises the following steps:
(1) preparing flexible curing adhesive film paper: and (3) laying a layer of non-woven paper and impregnated bond paper on a hot press, hot-pressing for 100s at the temperature of 120 ℃ and the unit pressure of 2.0MPa, and cooling and solidifying to obtain the flexible curing bond paper.
(2) Compounding: melting the PUR hot melt adhesive by a glue melting machine at 130 ℃, coating the molten PUR hot melt adhesive on the surface of a fiber board, wherein the gluing thickness is 0.04mm, and the gluing amount is 50g/m2And (3) strickling, pressing and pasting flexible curing adhesive film paper, wherein the temperature of a press is 130 ℃, the unit pressure is 0.8MPa, the pressing and pasting time is 15s, after curing, pressing and pasting a layer of flexible curing adhesive film paper on the other surface of the plywood by using a PUR hot melt adhesive, and then curing for 48h at the temperature lower than 30 ℃ to obtain the anti-cracking impregnated adhesive film veneer.
Example 4
The utility model provides a resistant flooding glued membrane paper decorative board that splits, the decorative board includes flexible solidification glued membrane paper, PUR hot melt adhesive layer, laminated wood board, PUR hot melt adhesive layer, flexible solidification glued membrane paper, the PUR hot melt adhesive is moisture curing reaction type polyurethane hot melt adhesive, flexible solidification glued membrane paper includes flooding glued membrane paper and non-woven fabrics paper, flooding glued membrane paper has the flooding glued membrane paper of mould proof antibacterial liquid for the flooding, the non-woven fabrics paper surface is equipped with the fish scale texture.
The preparation method of the anti-cracking impregnated bond paper veneer comprises the following steps:
(1) preparing flexible curing adhesive film paper: and (3) laying a layer of non-woven paper and impregnated bond paper on a hot press, hot-pressing for 25s at the temperature of 130 ℃ and the unit pressure of 1.8MPa, and cooling and solidifying to obtain the flexible curing bond paper.
(2) Compounding: melting the PUR hot melt adhesive by a glue dissolving machine at 115 ℃, coating the molten PUR hot melt adhesive on the surface of a joinery board, wherein the gluing thickness is 0.05mm, and the gluing amount is 65g/m2And scraping, pressing and pasting flexible curing adhesive film paper, wherein the temperature of a press is 110 ℃, the unit pressure is 1.2MPa, the pressing and pasting time is 10s, after curing, pressing and pasting a layer of flexible curing adhesive film paper on the other surface of the plywood by using a PUR hot melt adhesive, curing, and curing for 48h at the temperature lower than 30 ℃ to obtain the anti-cracking impregnated adhesive film veneer.
Example 5
The utility model provides a resistant flooding glued membrane paper decorative board that splits, the decorative board includes flexible solidification glued membrane paper, PUR hot melt adhesive layer, composite sheet, PUR hot melt adhesive layer, flexible solidification glued membrane paper, the PUR hot melt adhesive is moisture curing reaction type polyurethane hot melt adhesive, flexible solidification glued membrane paper is including flooding glued membrane paper and non-woven paper, flooding glued membrane paper has the flooding glued membrane paper of mould proof antibacterial liquid for the flooding, the non-woven paper surface is equipped with the grid texture.
The preparation method of the anti-cracking impregnated bond paper veneer comprises the following steps:
(1) preparing flexible curing adhesive film paper: and (3) laying a layer of non-woven paper and impregnated bond paper on a hot press, hot-pressing for 20s at the temperature of 125 ℃ and the unit pressure of 1.2MPa, and cooling and solidifying to obtain the flexible solidified bond paper.
(2) Compounding: melting the PUR hot melt adhesive through a glue melting machine, wherein the melting temperature is 125 ℃, then blowing the surface of the composite board clean through blowing equipment, coating the molten PUR hot melt adhesive on the surface of the composite board, and gluingThe thickness is 0.05mm, and the gluing amount is 55g/m2And leveling by a leveling device, flatly pasting the flexible curing adhesive film paper on the surface of the plywood, after curing, pressing and pasting a layer of flexible curing adhesive film paper on the other surface of the plywood by using a PUR hot melt adhesive, curing at the temperature of 120 ℃ and the unit pressure of 1.0 for 12s, and curing at the temperature lower than 30 ℃ for 48h to obtain the anti-cracking impregnated adhesive film veneer.
Comparative example 1
A common veneer with impregnated bond paper comprises the laminated structures of the impregnated bond paper, a plywood and the impregnated bond paper, wherein the impregnated bond paper is adhered to the upper surface and the lower surface of the plywood through a hot pressing process.
Comparative example 2
The veneer with impregnated bond paper containing non-woven fabric has laminated structure including impregnated bond paper, non-woven fabric, plywood, non-woven fabric and impregnated bond paper, and the impregnated bond paper and the non-woven fabric are adhered to the surface of the plywood through hot pressing.
Comparative example 3
A flexible curing adhesive film paper veneer is characterized in that the laminated structure of the flexible curing adhesive film paper veneer is flexible curing adhesive film paper, melamine glue, a plywood, melamine glue and flexible curing adhesive film paper, and the flexible curing adhesive film paper is bonded through a hot pressing process.
The examples 1 to 5 and the comparative examples 1 to 3 were subjected to a crack resistance test, the test method was carried out according to the national standard GB/T15102-2006, and the test results are shown in Table 1.
TABLE 1 cracking resistance test results table
| Item | Cracking resistance rating | Number of cold and hot cycles |
| Examples1 | Grade 5 | 8 times (by volume) |
| Example 2 | Grade 5 | 8 times (by volume) |
| Example 3 | Grade 5 | 8 times (by volume) |
| Example 4 | Grade 5 | 8 times (by volume) |
| Example 5 | Grade 5 | 8 times (by volume) |
| Comparative example 1 | Stage 2 | 4 times (twice) |
| Comparative example 2 | |
4 times (twice) |
| Comparative example 3 | 4 stage | 4 times (twice) |
As can be seen from table 1, the crack-resistant impregnated bond paper veneer described in examples 1 to 5 can be kept intact without cracks under 8 cycles of cold and heat resistance (4 cycles in national standard), while the crack-resistant impregnated bond paper veneer of comparative example 1 has cracks after 4 cycles of cold and heat resistance, while comparative example 2 with non-woven fabric and comparative example 4 with melamine-bonded flexible cured bond paper veneer also have fine cracks after 4 cycles of cold and heat resistance, and thus, the crack-resistant capability of the veneer can be greatly improved by the cooperation of the flexible cured bond paper and the PUR hot melt adhesive layer.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (10)
1. The utility model provides a resistant flooding glued membrane paper decorative board that splits, includes the sandwich layer, its characterized in that, the upper and lower surface of sandwich layer all is equipped with PUR hot melt adhesive layer, flexible solidification glued membrane ply in proper order, PUR hot melt adhesive is laminated sandwich layer and flexible solidification glued membrane paper, flexible solidification glued membrane ply includes flooding glued membrane paper and cellophane, the surface of cellophane is equipped with the line, flooding glued membrane paper passes through the hot pressfitting with cellophane and forms flexible solidification glued membrane ply.
2. The crack-resistant impregnated bond paper veneer of claim 1, wherein the PUR hot melt adhesive is a moisture curing reactive polyurethane hot melt adhesive.
3. The crack-resistant impregnated bond paper veneer according to claim 1, wherein the impregnated bond paper is impregnated with a mildew-proof and antibacterial solution.
4. The crack resistant impregnated bond paper veneer of claim 1, wherein the fiber paper comprises one of a non-woven paper, a fiberglass paper.
5. The crack resistant impregnated bond paper veneer of claim 1, wherein the core layer comprises one of plywood, particle board, fiberboard, core board, and composite board.
6. The crack-resistant impregnated bond paper veneer of claim 1, wherein the manner of attaching the core layer to the flexible cured bond paper comprises one or both of pressure attachment and flat attachment.
7. The preparation method of the crack-resistant impregnated bond paper veneer is characterized in that the crack-resistant impregnated bond paper veneer is the crack-resistant impregnated bond paper veneer according to any one of claims 1 to 6, and the preparation method comprises the following steps: coating PUR thermosol on the surface of the core layer, scraping, sticking the flexible curing adhesive film paper on the surface of the core layer in a pressing or flat sticking mode, curing, performing the same treatment on the other surface of the core layer, and curing at the temperature of below 30 ℃ for 48 hours to obtain the composite impregnated adhesive film veneer.
8. The preparation method of the crack-resistant impregnated bond paper veneer according to claim 7, wherein the thickness of the sizing of the PUR thermosol is 0.04-0.06 mm, and the sizing amount is 50-70 g/m2。
9. The preparation method of the crack-resistant impregnated bond paper veneer according to claim 7, wherein in the pressing mode, the temperature of a press is 110-130 ℃, the unit pressure is 0.8-1.2, and the pressing time is 10-15 s.
10. The preparation method of the crack-resistant impregnated bond paper veneer according to claim 7, further comprising the preparation of flexible cured bond paper, and the specific steps comprise: and laying a layer of fiber paper and impregnated bond paper on a hot press, hot-pressing for 15-100 s at the temperature of 120-200 ℃ and the unit pressure of 1.0-2.0 MPa, and cooling and curing to obtain the flexible curing bond paper.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113183585A (en) * | 2021-04-14 | 2021-07-30 | 济南红森林装饰材料有限公司 | Method for manufacturing building wall surface decorative plate |
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| CN111645394A (en) * | 2020-06-16 | 2020-09-11 | 丁中建 | Composite material laminated board and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204054251U (en) * | 2014-09-04 | 2014-12-31 | 濮亮 | The solid wood composite board of anti-be full of cracks |
| CN207789925U (en) * | 2017-11-13 | 2018-08-31 | 福建省东德木业有限公司 | A kind of full plank of impregnated bond paper facing |
| CN209649687U (en) * | 2018-10-11 | 2019-11-19 | 广东福美新材料科技有限公司 | A kind of shock proof automatically cleaning impregnated paper |
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