CN112659659A - PET composite impregnated bond paper veneer and preparation method thereof - Google Patents
PET composite impregnated bond paper veneer and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a PET composite impregnated bond paper veneer and a preparation method thereof. The PET composite impregnated bond paper veneer has high surface brightness, yellowing resistance, glossiness, durability, acid and alkali resistance, and the color and texture of the impregnated bond paper can be fully displayed, so that the PET composite impregnated bond paper veneer has a good ornamental effect. The invention also provides a preparation method of the PET composite impregnated bond paper veneer, the preparation method prepares the PET composite impregnated bond paper veneer through a hot pressing and pasting process, and the method is simple to operate, easy to realize, low in cost and convenient to popularize and apply in the industry.
Description
Technical Field
The invention relates to the technical field of artificial boards, in particular to a PET composite impregnated bond paper veneer and a preparation method thereof.
Background
The impregnated paper veneer artificial board is a decorative board which takes artificial boards such as shaving boards, fiber boards and the like as base materials and melamine impregnated paper as a facing material. The veneer with the impregnated bond paper has beautiful color and texture, simple preparation process, good wear resistance, heat resistance and water resistance, so that the veneer is widely used in the fields of furniture manufacture, indoor decoration and the like. However, with the improvement of the living standard of people, the requirement for the aesthetic property of interior decoration materials is higher and higher, and particularly, a plate with a bright surface is favored, wherein the UV plate is favored because the UV plate has good mirror surface gloss, bright color and good visual impact. However, since the surface of the UV plate is UV curable paint, volatile organic compounds are released, and the yellowing resistance and durability of the UV paint are poor, shrinkage deformation occurs after a period of use, and the color of the surface turns yellow, so that the ornamental effect is reduced. In addition, the existing UV plate is complex in preparation process, generally 6-7 times of UV paint is needed, and then the UV paint is cured and dried by UV light, so that the process is complex and the cost is high.
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 a PET composite impregnated bond paper veneer and a preparation method thereof, and aims to overcome the defects of poor durability and yellowing resistance of a UV plate and complex preparation process in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a compound flooding glued membrane paper decorative board of PET, includes sandwich layer and the flooding glued membrane paper layer of setting surface about the sandwich layer, wherein, decorative board surface still includes the one deck PET rete at least, the PET rete passes through hot melt adhesive and flooding glued membrane paper layer veneer.
In the PET composite impregnated bond paper veneer, the PET film layer comprises one of a PET transparent high bright film and a PET transparent skin-touch film.
In the PET composite impregnated bond film paper veneer, the adhesive layer is a PUR hot melt adhesive layer, and the PUR hot melt adhesive is a moisture curing reaction type PUR hot melt adhesive.
In the PET composite impregnated bond paper veneer, the core layer comprises one of plywood, a core board, a density board, a shaving board and a fiber board.
In the composite impregnated PET film paper veneer, the veneer sequentially comprises a PET film layer, an adhesive layer, an upper impregnated film paper layer, a core layer and a lower impregnated film paper layer from top to bottom, or the veneer sequentially comprises the PET film layer, the adhesive layer, the upper impregnated film paper layer, the core layer, the lower impregnated film paper layer, the adhesive layer and the PET film layer from top to bottom.
A preparation method of a PET composite impregnated bond paper veneer is provided, wherein the PET composite impregnated bond paper veneer is the PET composite impregnated bond paper veneer, and the method comprises the following steps:
s1, preparing a finishing layer: paving a layer of impregnated adhesive film on the upper surface and the lower surface of the core layer, and pressing and pasting the impregnated adhesive film by a hot press to obtain an impregnated adhesive film paper veneer;
s2, compounding of the PET film: cleaning the surface of the impregnated bond paper veneer, carrying out hot melting on a PUR hot melt adhesive through an adhesive melting mechanism, carrying out roller coating on the molten PUR hot melt adhesive on the surface of the impregnated bond paper through roller coating equipment, strickling, flatly pasting a PET film on the surface, and curing for 48-60 h after curing to obtain the PET composite impregnated bond paper veneer.
In the preparation method of the PET composite impregnated bond paper veneer, in the step S1, the pressing temperature of the hot press is 130-200 ℃, the unit pressure is 1.0-2.0 MPa, and the hot pressing time is 15-60S.
In the preparation method of the PET composite impregnated bond paper veneer, in the step S2, the glue melting temperature of the roller coating equipment is 110-130 ℃, and the glue coating thickness is 0.04-0.06 mm.
In the preparation method of the PET composite impregnated bond paper veneer, the maintenance conditions are that the temperature is lower than 30 ℃ and the humidity is 50-70%.
In the preparation method of the PET composite impregnated bond paper veneer, in the step S1, the deviation of the thickness of the impregnated bond paper veneer is less than 0.15 mm.
Has the advantages that:
the invention provides a PET composite impregnated bond paper veneer and a preparation method thereof, the PET composite impregnated bond paper veneer has excellent glossiness, yellowing resistance, high durability, acid resistance and alkali resistance by gluing a PET film layer on the surface of an impregnated bond paper layer, and the color and the texture of the impregnated bond paper can be fully displayed due to the good light transmission effect of the PET film, so that the ornamental effect of the veneer is greatly improved. The preparation method of the PET composite impregnated bond paper veneer comprises the steps of hot pressing and adhering the impregnated bond paper on the surface of the core layer, and flatly adhering the PET film on the surface of the impregnated bond paper through the PUR hot melt adhesive.
Drawings
Fig. 1 is a schematic structural diagram of a PET composite impregnated bond paper veneer provided by the invention.
Fig. 2 is a schematic structural view of a veneer having PET films on both upper and lower surfaces.
Detailed Description
The invention provides a PET composite impregnated bond paper veneer, which is further described in detail by the following embodiments in order to make the purpose, technical scheme and effect of the invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and 2, the invention provides a PET composite impregnated bond paper veneer, which comprises a core layer 1 and impregnated bond paper layers 2 arranged on the upper and lower surfaces of the core layer, wherein the core layer comprises one of plywood, a core board, a density board, a shaving board and a fiber board, the thickness of the core layer is 3-18 mm, the impregnated bond paper layers are attached to the upper and lower surfaces of the core layer through a hot-press bonding process to increase the decorative effect of the surface of the core layer, the surface of the veneer further comprises at least one PET film layer 4, the PET film layer is a transparent film, the PET film layer has a good light transmission effect, the light transmission rate is 89-92%, the color and the texture of the impregnated bond paper can be fully displayed, and the effect of increasing the surface glossiness is achieved; the PET rete passes through glue film 3 and impregnated adhesive film ply veneer, glue film 3 is the hot melt adhesive, the hot melt adhesive is colorless transparent glue, has better light transmissivity.
The PET compound impregnated bond paper veneer of above-mentioned structure has the glossiness of UV lacquer through pasting the PET membrane on impregnated bond paper surface, and fungible UV board compares with prior art, has following beneficial effect at least: (1) the PET film has excellent yellowing resistance and durability, can greatly improve the yellowing resistance and durability of the PET composite impregnated bond paper veneer, does not change color and shrink and deform after long-term use, and ensures that the veneer has better ornamental value; (2) the PET film has good strength, toughness, acid resistance and alkali resistance, and can improve the wear resistance, impact resistance and cracking resistance of the veneer; (3) the PET film is green and environment-friendly, and no volatile organic compound is released; (4) because the PET film is adhered to the surface of the veneer through the hot melt adhesive, compared with the production process of the UV plate, the preparation process is simple and easy to implement, easy to realize and energy-saving.
Specifically, the PET composite impregnated bond paper veneer with the structure is characterized in that the PET film layer comprises one of a PET transparent high bright film and a PET transparent skin-touch film. The transparent high bright membrane of PET has excellent light transmissivity, and its luminousness is greater than 90%, can make the color and the texture of flooding offset paper fully demonstrate to because the surface is smooth, the dust is difficult to the landing, thereby dustproof anti-soil ability is good, even if coffee, soy sauce splash on it, also do not leave the trace, wipe gently and can clear away. The surface microstructure of the PET transparent skin feeling film is wave-shaped, has the touch feeling of skin when the skin is contacted, and enables light to form a dispersion effect due to the surface wave-shaped microstructure, so that the veneer presents a soft light feeling effect, and fingerprints are not easy to remain. The light transmittance of the PET transparent skin-feel film can reach more than 89%, so that the color and the texture of the impregnated film adhesive paper can be fully displayed, and the PET transparent skin-feel film has a soft matte effect.
Specifically, in the compound impregnated bond membrane paper decorative board of PET of above-mentioned structure, the glue film is PUR hot melt adhesive layer, PUR hot melt adhesive is moisture curing reaction type hot melt adhesive, moisture curing reaction type PUR hot melt adhesive has that curing speed is fast, adhesive strength is big, characteristics that shock resistance is good to colorless transparent, flexible good after the solidification. When the PUR hot melt adhesive is used, the PUR hot melt adhesive can be melted and used at a lower temperature, and when the PUR hot melt adhesive is bonded, the PUR hot melt adhesive reacts with air and moisture in a plate, and is solidified and crosslinked to achieve the function of adhesion.
In some embodiments, the PET composite impregnated bond paper veneer comprises a PET film layer 4, a glue layer 3, an impregnated bond paper layer 2, a core layer 1, and an impregnated bond paper layer 2 in sequence from top to bottom, wherein the PET film layer is only arranged on the surface of the impregnated bond paper on one side, during production, only the upper impregnated bond paper layer is required to be roller-coated with a hot melt adhesive, and then a PET film is flatly pasted, and the veneer with such a structure is generally used in a scene where only one side of the veneer needs to be facing outward.
In other embodiments, the PET composite impregnated bond paper veneer comprises a PET film, 4, a glue layer 3, an impregnated bond paper layer 2, a core layer 1, an impregnated bond paper layer 2, a glue layer 3, and a PET film layer 1 in sequence from top to bottom, and both sides of the veneer with such a structure have PET films, that is, both sides of the veneer have better brightness and strength.
The invention also discloses a preparation method of the PET composite impregnated bond paper veneer, which comprises the following steps:
s1, preparing a finishing layer: and paving a layer of impregnated adhesive film on the upper surface and the lower surface of the core layer, pressing and pasting the impregnated adhesive film by a hot press, wherein the pressing and pasting temperature of the hot press is 130-200 ℃, the unit pressure is 1.0-2.0 MPa, the hot pressing time is 15-60 s, and hot pressing is carried out to obtain the impregnated adhesive film paper veneer. The pressing temperature, the pressing pressure and the pressing time are direct factors influencing the pressing effect. The hot pressing temperature can influence the curing reaction speed of resin, when the pressing temperature is too low, the melamine glue can not be cured completely, so that the bonding effect is reduced, when the pressing temperature is too high, the curing speed of the impregnated paper is too high, the cracking or dry-out phenomenon is easily caused, and when the temperature is 130-200 ℃, the curing speed is more proper. The pressure during hot pressing can promote impregnated bond paper and sandwich layer to combine, improves bonding performance, but when pressure is low excessively, can reduce the flow of resin in the impregnated bond paper for the adhesive strength of impregnated bond paper and sandwich layer reduces, when pressure is too high, can destroy the mechanical properties of sandwich layer, even change the thickness of sandwich layer, especially when being directed against the particle board, its pressure especially can not be too high, when pressure is 1.0 ~ 2.0MPa, has better bonding effect. Under the fixed condition of temperature and pressure, hot pressing time is longer, and then the resin solidification is more abundant, but hot pressing overlength makes the resin solidification excessive easily, and elasticity descends, and hot pressing time is too short makes the solidification insufficient again, produces the sticky board phenomenon easily, influences product quality, is 15 ~ 60s when hot pressing time, has better curing effect.
S2, compounding of the PET film: sweeping the surface of the impregnated bond paper veneer surface completely through a sweeping mechanism, ensuring that no dust or stain is on the surface of the impregnated bond paper veneer surface, melting the bond through a bond mechanism, wherein the bond temperature is 110-130 ℃, the melted PUR hot melt adhesive is coated on the surface of the impregnated bond paper through a roller coating device in a roller coating mode, the coating thickness is 0.04-0.06 mm, then flatly pasting the PET film on the PUR hot melt adhesive through a mirror surface sweeping roller, curing and maintaining for 48-60 hours under the conditions that the temperature is lower than 30 ℃ and the humidity is 50-70%, and finally obtaining the PET composite impregnated bond paper veneer.
In the step S2, the temperature of the glue coating roller in the roller coating device is 110 to 120 ℃ to ensure that the PUR hot melt adhesive can be in a molten state, so as to better coat the glue, the temperature of the mirror sweeping roller is 120 to 130 ℃, the temperature is high, so that the excess PUR hot melt adhesive can be conveniently scraped away from the surface of the impregnated adhesive film paper, a glue layer with a set thickness is obtained, and the veneer with a consistent thickness is obtained.
It should be noted that step S2 needs to be performed in a dust-free workshop, and the requirements on the ambient temperature and humidity are high, and the ambient temperature needs to be controlled to be 25 ℃ and the humidity needs to be 50-70%, so that the pasting process can be smoothly performed, and the PET composite impregnated bond paper veneer with firm adhesion and good appearance effect is obtained.
It should be particularly noted that, in the step S1, the thickness of the impregnated bond paper facing board needs to be strictly controlled, and it is necessary to ensure that the thickness deviation is smaller than 0.15mm, so the thickness deviation of the core layer is required to be small, mainly because the gluing thickness of the PUR hot melt adhesive is only 0.04-0.06 mm, if the thickness deviation is too large, the inaccuracy of the thickness of the PUR hot melt adhesive in the step S2 is easily affected, and the thickness of the PUR hot melt adhesive directly affects the pasting effect, and finally affects the product quality.
The preparation method of the PET composite impregnated bond paper veneer has the advantages of few processes, simple operation and easy realization, and can be completed through the hot-pressing and pasting processes, and the prepared PET composite impregnated bond paper veneer not only has the appearance effect of a UV veneer, but also has various physical and chemical properties superior to those of the UV veneer.
Example 1
A PET composite impregnated bond paper veneer comprises a PET film layer, a glue layer, an upper impregnated bond paper layer, a plywood core layer and a lower impregnated bond paper layer. The PET rete is the transparent bright membrane of PET highlight, the glue film is PUR hot melt adhesive and is moisture curing reaction type hot melt adhesive layer.
A preparation method of a PET composite impregnated bond paper veneer comprises the following steps:
s1, preparing a finishing layer: and paving a layer of impregnated adhesive film on the upper surface and the lower surface of the core layer, pressing and pasting by a hot press, wherein the pressing and pasting temperature of the hot press is 180 ℃, the unit pressure is 1.5MPa, the hot pressing time is 30s, and hot pressing is carried out to obtain the impregnated adhesive film paper veneer.
S2, sticking the PET film: clean impregnated bond paper veneer surface totally through sweeping the mechanism, construct the melten gel through the melten gel machine, the melten gel temperature is 120 ℃, fused PUR hot melt adhesive passes through roller coat equipment roller coat in impregnated bond paper surface, rubber coating thickness is 0.05mm, the temperature of glue spreader is 110 ℃, then sweep the roller through the mirror surface and sweep the level, the mirror surface is swept the roller temperature and is 130 ℃, sweep the back, with the transparent high bright membrane of PET flat paste on PUR hot melt adhesive, carry out the maintenance after the solidification, the maintenance condition is: and maintaining the PET composite impregnated bond paper veneer for 50 hours at the temperature lower than 30 ℃ and the humidity of 60 percent to obtain the PET composite impregnated bond paper veneer.
Example 2
A PET composite impregnated bond paper veneer comprises a PET film layer, a glue layer, an upper impregnated bond paper layer, a core layer of a core-board and a lower impregnated bond paper layer. The PET rete is the transparent bright membrane of PET highlight, the glue film is PUR hot melt adhesive and is moisture curing reaction type hot melt adhesive layer.
A preparation method of a PET composite impregnated bond paper veneer comprises the following steps:
s1, preparing a finishing layer: and paving a layer of impregnated adhesive film on the upper surface and the lower surface of the core layer, pressing and pasting the impregnated adhesive film by a hot press, wherein the pressing and pasting temperature of the hot press is 200 ℃, the unit pressure is 2.0MPa, the hot pressing time is 15s, and hot pressing is carried out to obtain the impregnated adhesive film paper veneer.
S2, sticking the PET film: sweeping the surface of the impregnated bond paper veneer cleanly through a blowing mechanism, melting glue through a glue melting mechanism, wherein the glue melting temperature is 110 ℃, the molten PUR hot melt adhesive is coated on the surface of the impregnated bond paper through a roller coating device in a roller way, the glue coating thickness is 0.04mm, the temperature of a glue coating roller is 120 ℃, then the surface of the impregnated bond paper is swept flat through a mirror surface sweeping roller, the temperature of the mirror surface sweeping roller is 120 ℃, after sweeping flat, a PET transparent skin-feel film is flatly pasted on the PUR hot melt adhesive, curing is carried out after curing, the curing condition is that the temperature is lower than 30 ℃, the humidity is 50%, and the PET composite impregnated bond paper veneer is obtained after curing for 60 hours.
Example 3
A PET composite impregnated bond paper veneer comprises a PET film layer, a glue layer, an upper impregnated bond paper layer, a density board core layer, a lower impregnated bond paper layer, a glue layer and a PET film layer. The PET rete is the transparent bright membrane of PET highlight, the glue film is PUR hot melt adhesive and is moisture curing reaction type hot melt adhesive layer.
A preparation method of a PET composite impregnated bond paper veneer comprises the following steps:
s1, preparing a finishing layer: and paving a layer of impregnated adhesive film on the upper surface and the lower surface of the core layer, pressing and pasting by a hot press, wherein the pressing and pasting temperature of the hot press is 130 ℃, the unit pressure is 1.0MPa, the hot pressing time is 60s, and hot pressing is carried out to obtain the impregnated adhesive film paper veneer.
S2, sticking the PET film: the surface of the impregnated bond paper veneer is cleaned up through a blowing mechanism, the glue is melted through a glue melting mechanism, the glue melting temperature is 130 ℃, the melted PUR hot melt adhesive is coated on the surface of the impregnated bond paper through roller coating equipment in a roller coating mode, the glue coating thickness is 0.06mm, the temperature of a glue coating roller is 110 ℃, then the glue coating roller is swept flat through a mirror surface sweeping roller, the temperature of the mirror surface sweeping roller is 130 ℃, after the sweeping flat, a PET transparent high-brightness film is flatly pasted on the PUR hot melt adhesive, after solidification, the veneer is reversed, at the moment, the lower impregnated bond paper layer is located on the upper surface, the lower impregnated bond paper is coated with glue, the PET transparent high-brightness film is flatly pasted, then maintenance is carried out, the maintenance condition is that the temperature is lower than 30 ℃, the humidity is 70%, and after 48 hours of maintenance.
Example 4
A PET composite impregnated bond paper veneer comprises a PET film layer, a glue layer, an upper impregnated bond paper layer, a shaving board core layer and a lower impregnated bond paper layer. The PET rete is the transparent skin of PET feeling membrane, the glue film is PUR hot melt adhesive and is moisture solidification reaction type hot melt adhesive layer.
A preparation method of a PET composite impregnated bond paper veneer comprises the following steps:
s1, preparing a finishing layer: and paving a layer of impregnated adhesive film on the upper surface and the lower surface of the core layer, pressing and pasting by a hot press, wherein the pressing and pasting temperature of the hot press is 160 ℃, the unit pressure is 1.8MPa, the hot pressing time is 20s, and hot pressing is carried out to obtain the impregnated adhesive film paper veneer.
S2, sticking the PET film: sweeping the surface of the impregnated bond paper veneer cleanly through a blowing mechanism, melting glue through a glue melting mechanism, wherein the glue melting temperature is 115 ℃, the molten PUR hot melt adhesive is coated on the surface of the impregnated bond paper through roller coating equipment in a roller coating mode, the glue coating thickness is 0.04mm, the temperature of a glue coating roller is 110 ℃, then the surface of the impregnated bond paper is swept flat through a mirror surface sweeping roller, the temperature of the mirror surface sweeping roller is 130 ℃, after sweeping flat, a PET transparent skin-feel film is flatly pasted on the PUR hot melt adhesive, curing is carried out after curing, the curing condition is that the temperature is lower than 30 ℃, the humidity is 65%, and the PET composite impregnated bond paper veneer is obtained after 50h of curing.
Example 5
A PET composite impregnated bond paper veneer comprises a PET film layer, a glue layer, an upper impregnated bond paper layer, a fiber board core layer and a lower impregnated bond paper layer. The PET rete is the transparent skin of PET feeling membrane, the glue film is PUR hot melt adhesive and is moisture solidification reaction type hot melt adhesive layer.
A preparation method of a PET composite impregnated bond paper veneer comprises the following steps:
s1, preparing a finishing layer: and paving a layer of impregnated adhesive film on the upper surface and the lower surface of the core layer, pressing and pasting by a hot press, wherein the pressing and pasting temperature of the hot press is 150 ℃, the unit pressure is 1.2MPa, the hot pressing time is 40s, and hot pressing is carried out to obtain the impregnated adhesive film paper veneer.
S2, sticking the PET film: sweeping the surface of the impregnated bond paper veneer cleanly through a blowing mechanism, melting glue through a glue melting mechanism, wherein the glue melting temperature is 125 ℃, the molten PUR hot melt adhesive is coated on the surface of the impregnated bond paper through roller coating equipment in a roller coating mode, the glue coating thickness is 0.05mm, the temperature of a glue coating roller is 110 ℃, then the surface of the impregnated bond paper is swept flat through a mirror surface sweeping roller, the temperature of the mirror surface sweeping roller is 130 ℃, after sweeping flat, a PET transparent skin-feel film is flatly pasted on the PUR hot melt adhesive, curing is carried out after curing, the curing condition is that the temperature is lower than 30 ℃, the humidity is 60%, and the PET composite impregnated bond paper veneer is obtained after curing for 55 hours.
The PET composite impregnated bond paper veneer obtained in the examples 1-5 is subjected to various performance tests according to GB/T34722-. Meanwhile, a UV veneer is used as a comparative example 1 for testing, the UV veneer uses a plywood as a core layer, an impregnated film layer and a UV layer are sequentially arranged on the upper surface of the core layer, and another impregnated film layer is arranged on the lower surface of the core layer. The test results are shown in table 1.
TABLE 1 Performance test results Table
As can be seen from Table 1, the PET composite impregnated bond paper veneer has various performances superior to those of a UV veneer, particularly has yellowing resistance and durability, and has better quality. And the preparation process is simple, easy to realize and suitable for popularization and application.
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 PET composite impregnated bond paper veneer comprises a core layer and impregnated bond paper layers arranged on the upper surface and the lower surface of the core layer, and is characterized in that the surface of the veneer layer at least comprises one PET film layer, and the PET film layer is glued with the impregnated bond paper layers through hot melt adhesives.
2. The PET composite impregnated bond paper veneer of claim 1, wherein the PET film layer comprises one of a PET transparent highlight film and a PET transparent skin-feel film.
3. The PET composite impregnated bond paper veneer as recited in claim 1, wherein the bond line is a PUR hot melt adhesive line, and the PUR hot melt adhesive is a moisture curing reactive PUR hot melt adhesive.
4. The PET composite impregnated bond paper veneer of claim 1, wherein the core layer comprises one of plywood, core board, density board, particle board, fiber board.
5. The PET composite impregnated bond paper veneer according to claim 1, wherein the veneer comprises a PET film layer, a glue layer, an upper impregnated bond paper layer, a core layer and a lower impregnated bond paper layer in sequence from top to bottom, or the veneer comprises a PET film layer, a glue layer, an upper impregnated bond paper layer, a core layer, a lower impregnated bond paper layer, a glue layer and a PET film layer in sequence from top to bottom.
6. A preparation method of a PET composite impregnated bond paper veneer is characterized in that the PET composite impregnated bond paper veneer is the PET composite impregnated bond paper veneer according to any one of claims 1-5, and the method comprises the following steps:
s1, preparing a finishing layer: paving a layer of impregnated adhesive film on the upper surface and the lower surface of the core layer, and pressing and pasting the impregnated adhesive film by a hot press to obtain an impregnated adhesive film paper veneer;
s2, compounding of the PET film: cleaning the surface of the impregnated bond paper veneer, carrying out hot melting on a PUR hot melt adhesive through an adhesive melting mechanism, carrying out roller coating on the molten PUR hot melt adhesive on the surface of the impregnated bond paper through roller coating equipment, strickling, flatly pasting a PET film on the surface, and curing for 48-60 h after curing to obtain the PET composite impregnated bond paper veneer.
7. The preparation method of the PET composite impregnated bond paper veneer according to claim 6, wherein in the step S1, the laminating temperature of the hot press is 130-200 ℃, the unit pressure is 1.0-2.0 MPa, and the hot pressing time is 15-60S.
8. The preparation method of the PET composite impregnated bond paper veneer according to claim 6, wherein in the step S2, the glue melting temperature of the roller coating equipment is 110-130 ℃, and the glue coating thickness is 0.04-0.06 mm.
9. The preparation method of the PET composite impregnated bond paper veneer according to claim 6, wherein the curing conditions are that the temperature is lower than 30 ℃ and the humidity is 50-70%.
10. The method for preparing the PET composite impregnated bond paper veneer according to claim 6, wherein the deviation of the thickness of the impregnated bond paper veneer obtained in the step S1 is less than 0.15 mm.
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| CN113174219A (en) * | 2021-05-18 | 2021-07-27 | 高振忠 | Impregnated paper with sealing effect |
| CN113752348A (en) * | 2021-04-21 | 2021-12-07 | 上海盈倍工贸有限公司 | Environment-friendly bamboo and wood product surface treatment process |
| CN114103138A (en) * | 2022-01-26 | 2022-03-01 | 佛山市顺德区新俊数控设备有限公司 | Plate film pressing production line with PUR (polyurethane) adhesive film |
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| CN113174219A (en) * | 2021-05-18 | 2021-07-27 | 高振忠 | Impregnated paper with sealing effect |
| CN114103138A (en) * | 2022-01-26 | 2022-03-01 | 佛山市顺德区新俊数控设备有限公司 | Plate film pressing production line with PUR (polyurethane) adhesive film |
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