Impregnated paper polymerization equipment

Abstract

To provide a device that, with a simple configuration, improves the smoothness of an impregnated paper polymerized on a base material, which can be finished with a superior mirror-like surface.SOLUTION: An impregnated paper 6a is formed by making a paper material 6 pass through a fluid material reservoir 16 of impregnating means 10, and the impregnated paper 6a is polymerized on the upper surface of a base material 2 by being sandwiched by main and subordinate rollers 7a, 7b of sandwiching means 7, the impregnated paper 6a polymerized on the base material 2 is pressed by pressing means 18 by a pressing force that is gradually increased, and the seepage or leakage of the fluid material from both ends of the impregnated paper 6a is prevented by blocking means 19. The degree of smoothness of the impregnated paper 6a is improved by increasing the pressing force of the pressing means 18 toward the downstream side in the conveying direction when the impregnated paper 6a is pressed by the pressing means 18.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an impregnated paper lamination device for laminating impregnated paper impregnated with a fluid material onto a base material transported in a predetermined transport direction by a transport means. [Background technology]

[0002] Conventionally, decorative boards are manufactured by attaching a decorative paper with a predetermined print to the surface of a wood fiberboard substrate such as particle board or MDF. Specifically, for example, as described in Patent Document 1, a primer layer for improving the smoothness of the substrate surface, a concealing layer with excellent light resistance, a colorant layer not containing a fibrous material such as a decorative paper such as a printed layer or transfer layer with a pattern, and an ultraviolet curing resin paint layer for a top coat layer are sequentially applied on the substrate, a plastic film is placed on the ultraviolet curing resin paint layer, a roller is rolled on the plastic film to spread and degas the ultraviolet curing resin paint, ultraviolet light is irradiated from above the plastic film to cure the ultraviolet curing resin paint to form a top coat layer, and then the plastic film is peeled off to manufacture a decorative board.

[0003] In the method described in the above-mentioned Patent Document 1, since it is necessary to apply two coating processes for a colorant layer such as a printed layer and an ultraviolet-curable resin paint layer for a topcoat layer, the process becomes complicated to obtain a substrate with a predetermined design printed thereon. Therefore, it has been considered to reduce the number of processes by preparing a fibrous material (decorative paper) with a predetermined printed design in advance, and laminating an impregnated paper made by impregnating this with ultraviolet-curable resin or electron beam curable resin on the substrate.

[0004] In this case, the printed fibrous material (decorative paper) is typically immersed (so-called dipping) in ultraviolet-curable resin or electron beam-curable resin filled in a filling tank to impregnate it with the ultraviolet-curable resin or electron beam-curable resin to form impregnated paper, and the impregnated paper is then placed on a substrate and irradiated with ultraviolet light or an electron beam to harden the ultraviolet-curable resin or electron beam-curable resin impregnated in the impregnated paper. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP2018-140629A Summary of the Invention [Problem to be solved by the invention]

[0006] However, the surface of wood fiberboard substrates such as particle board and MDF has numerous irregularities, and the impregnated paper itself is not uniform in thickness. Therefore, even if impregnated paper is laminated onto such an uneven substrate, and then a plastic film of uniform thickness is laminated on the impregnated paper and rolled over it with a roller to smooth it out, although it is possible to smooth out the impregnated paper to a certain extent, it is not possible to finish the surface of the decorative panel obtained by curing the ultraviolet-curing resin or electron beam-curing resin to a good mirror-like state, and so a method that can make the surface of the impregnated paper laminated onto the substrate even smoother is desired.

[0007] In addition, when a roller is rolled on the impregnated paper, the pressure of the roller causes the ultraviolet-curable resin or electron-beam-curable resin to seep out of the impregnated paper and adhere to the sides of the substrate, the roller, and surrounding members, resulting in a poor appearance after the resin is cured, and there is a problem in that the ultraviolet-curable resin or electron-beam-curable resin adhering to the roller and surrounding members must be removed. In addition, the method of forming the impregnated paper by immersing it in ultraviolet-curable resin or electron-beam-curable resin also requires the cleaning of the filling tank.

[0008] Furthermore, particularly in the case of ultraviolet curing resins, when ultraviolet light is applied to harden the resin, the ultraviolet light is blocked by certain colors of pigments and dyes used in printing, so there is a risk that the ultraviolet light will not reach the inside of the resin and the resin will not be sufficiently hardened.

[0009] On the other hand, in recent years, it has been considered to print a predetermined design on a polypropylene (PP) film by gravure printing or the like, irradiate it with an electron beam in a nitrogen gas atmosphere to cause changes such as crosslinking between molecules to harden the PP film, and then form a topcoat layer by layering the hardened PP film on a substrate and bonding it with an adhesive, and since the thickness of the PP film is uniform, it is possible to improve the smoothness and finish it into a mirror-like state for the decorative board. However, in this case, the process of irradiating the electron beam to harden the PP film must be carried out in a nitrogen gas atmosphere, which requires special equipment such as a dedicated chamber filled with nitrogen gas, resulting in the inconvenience of the device becoming larger and more expensive.

[0010] This invention has been made in consideration of the above-mentioned problems, and aims to provide a simple structure that can increase the smoothness of impregnated paper that is superimposed on a substrate, thereby enabling the substrate to be finished with an excellent mirror surface. [Means for solving the problem]

[0011] In order to achieve the above object, the impregnated paper polymerization device of the present invention is an impregnated paper polymerization device that laminates impregnated paper impregnated with a fluid material on a plate-shaped substrate transported in a predetermined transport direction by a transport means, the device having a main roller and a slave roller respectively disposed on the upper and lower sides of the substrate during transport, and a clamping means that clamps from above and below a long piece of paper material unwound from a paper feed roll while it is overlapped on the upper surface of the substrate, and a fluid material supplying means for supplying the fluid material across the width of the substrate to a position upstream of the clamping means in the transport direction and just before the paper material is overlapped, to form a fluid material reservoir, and the fluid material reservoir The apparatus comprises an impregnation means for impregnating the paper material with the fluid material by passing through a section to form the impregnated paper, a pressing means provided downstream of the clamping means in the transport direction and pressing the impregnated paper superimposed on the upper surface of the substrate by clamping with the clamping means, and a preventing means provided downstream of the clamping means in the transport direction and preventing the fluid material from seeping out of the impregnated paper to both sides of the substrate by pressing with the pressing means, wherein the fluid material has adhesive properties due to electron beam curing characteristics, and the pressing force of the pressing means increases downstream in the transport direction.

[0012] The pressing means may include a plurality of pressing rollers for pressing the impregnated paper layered on the upper surface of the base material.

[0013] The pressing means may include a pressing belt that presses the impregnated paper layered on the upper surface of the base material.

[0014] The impregnated paper may be formed by applying a predetermined printing to the paper material before it is impregnated with the fluid material.

[0015] The printing apparatus may further comprise a hardening means provided downstream of the pressing means for hardening the fluid material impregnated in the impregnated paper by irradiating the fluid material with an electron beam.

[0016] In addition, it is preferable to further include a lamination means provided upstream of the hardening means for laminating a resin film on the upper surface of the impregnated paper impregnated with the fluid material, and a peeling means provided downstream of the lamination means for peeling off the resin film.

[0017] The base material may be made of a long wooden board and may be formed so as to be separable at predetermined lengths. The apparatus may further comprise a separating means that is provided downstream of the peeling means and separates the base material at the predetermined lengths.

[0018] The preventing means may harden the fluid material at the edge portions of the impregnated paper on both sides of the base material to prevent the fluid material from seeping out from the impregnated paper.

[0019] The blocking means may be configured to recover the fluid material that seeps out from the impregnated paper to both sides of the base material due to the pressure of the pressing means.

[0020] Moreover, it is desirable that the flowable material is 50% or more biomass. Effect of the Invention

[0021] According to the present invention, impregnated paper is formed by passing the paper material through a fluid material reservoir provided by the impregnation means, and the impregnated paper is superimposed on the upper surface of the substrate by being clamped between the main and secondary rollers of the clamping means. The impregnated paper is pressed by the pressing means, and the pressing force of the pressing means increases toward the downstream side in the conveying direction, thereby increasing the smoothness of the impregnated paper superimposed on the substrate.

[0022] In this case, because the fluid material has adhesive properties due to its electron beam curing properties, even if a design has been printed on the impregnated paper in advance, when the fluid material is cured by irradiating it with an electron beam, the electron beam is not blocked by a specific color of the printing ink, as is the case with ultraviolet-curing resin, and the electron beam can reach deep into the fluid material, allowing it to be sufficiently cured.

[0023] In addition, there is no need for a nitrogen-filled chamber, as is the case when curing polypropylene (PP) films by electron beam irradiation. With this simple configuration, the smoothness of the impregnated paper polymerized onto the substrate can be increased, making it possible to finish the substrate with an excellent mirror surface. [Brief description of the drawings]

[0024] [Figure 1] 1 is a side view showing a schematic configuration of one embodiment of an apparatus for polymerizing impregnated paper according to the present invention. [Diagram 2] FIG. 2 is a perspective view of a portion of FIG. [Diagram 3] FIG. 2 is a plan view of another part of FIG. [Figure 4] 2 is a flowchart illustrating the operation of FIG. 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] An embodiment of a decorative board manufacturing apparatus including an impregnated paper polymerization device according to the present invention will be described with reference to Figs. 1 to 4.

[0026] The decorative board manufacturing device 1 in this embodiment is configured as shown in Fig. 1. In Fig. 1, 2 denotes a substrate that is transported in a state where a particle board (PB) of a predetermined length is connected in a long length without any gaps between the substrates, 3 denotes a transport means consisting of a plurality of transport rollers 4 that transports the substrate 2 in the transport direction indicated by the arrow in Fig. 1, 5 denotes a paper feed roll on which a long paper material 6 that is slightly wider than the width of the substrate 2 (see Fig. 3) and has a predetermined design printed thereon by a well-known printing means such as an inkjet printer or a gravure printer is wound, and 7 denotes a clamping means that is disposed below the paper feed roll 5 and includes a main roller 7a on the upper side and a sub roller 7b on the lower side that press the paper material 6 unwound from the paper feed roll 5 with a predetermined pressure from above and below the substrate 2 while overlapping the paper material 6 on the upper surface of the substrate 2 being transported.

[0027] Here, the axial length of both rollers 7a, 7b is set to be greater than the width of the base material 2 and the paper material 6, as shown in Fig. 2. The base material 2 may be a medium density fiberboard called MDF other than the above-mentioned particle board.

[0028] Also, in Figure 1, 10 is an impregnation means, which is equipped with a material tank 11 filled with a fluid material made of an electron beam curing resin having adhesive properties due to electron beam curing characteristics, and is equipped with a plurality of supply pipes 12 having one end connected to the material tank 11 and the other end arranged upstream of the main roller 7a of the clamping means 7 (upstream in the conveying direction of the substrate 2), and supplies the fluid material in the material tank 11 across the width of the substrate 2 to the upper surface of the substrate 2 at a position just before the paper material 6 upstream of the clamping means 7 is overlapped, thereby forming a fluid material reservoir portion described later.

[0029] Furthermore, in Figure 1, 14 is a regulating means for regulating the fluid material supplied from the material tank 11 of the impregnation means 10 from spreading beyond the width of the substrate 2, and keeping it within the width of the substrate 2. As shown in Figure 2, the regulating means is provided with regulating plates 15, 15 which are arranged upstream of the main roller 7a of the clamping means 7 and placed on both ends of the substrate 2, and whose downstream arc-shaped end faces are arranged along the peripheral surface of the main roller 7a. Both regulating plates 15, 15 are spaced apart at a distance narrower than the width of the substrate 2, and the distance between them is variable. On the upstream side of the main roller 7a (upstream in the conveying direction of the substrate 2), a fluid material reservoir 16 is formed in an area surrounded by the substrate 2, both regulating plates 15, 15, and the paper material 6 superimposed on the substrate 2.

[0030] Then, fluid material consisting of electron beam curing resin supplied from the material tank 11 accumulates in this fluid material reservoir 16, and as the main roller 7a of the clamping means 7 rotates in the direction of the arrow in Figures 1 and 2, the fluid material adheres to the upper surface of the substrate 2 and the lower surface of the paper material 6 in the width direction. With the fluid material applied to the lower surface of the paper material 6, the pressure applied by both rollers 7a, 7b of the clamping means 7 is controlled, so that the fluid material applied to the lower surface of the paper material 6 spreads in the width direction of the paper material 6 and substrate 2, impregnating the paper material 6 and forming impregnated paper 6a, and at the same time polymerizing on the substrate 2.

[0031] Here, it is desirable to adjust the distance between both regulating plates 15, 15 in consideration of the pressing force of the pressing means 18 so that the impregnated paper 6a impregnated with the fluid material spreads across at least the entire width of the substrate 2 in the width direction of the substrate 2 as shown by hatching in Fig. 3 by pressing the impregnated paper 6a impregnated with the fluid material by the pressing means described below with successively increasing pressing force. Note that it is preferable to use, as the electron beam curing resin which is the fluid material, a material with a biomass content of 50% or more, such as a special modified acrylate including rosin-based acrylate, polyurethane acrylate, polyester acrylate, etc.

[0032] Furthermore, in Figure 1, reference numeral 18 denotes a pressing means provided downstream of the clamping means 7 (downstream in the transport direction of the substrate 2), which comprises a first set of rollers 18a, 8b arranged above and below the substrate 2, and a pair of rollers 18c, 18d arranged downstream of these rollers 18a, 18b (downstream in the transport direction of the substrate 2). By pressing the impregnated paper 6a superimposed on the upper surface of the substrate 2 with the clamping means 7, the fluid material impregnated in the impregnated paper 6a superimposed on the substrate 2 spreads across the entire width of the substrate 2, while at the same time increasing the smoothness of the surface of the impregnated paper 6a.

[0033] At this time, the pressing forces of the first set of rollers 18a, 8b and the second set of rollers 18c, 18d increase toward the downstream side in the transport direction of the substrate 2. In other words, the pressing forces of the first set of rollers 18a, 18b of the pressing means 18 are greater than the pressing force of the main and secondary rollers 7a, 7b of the clamping means 7, and the pressing force of the second set of rollers 18c, 18d is greater than the pressing force of the first set of rollers 18a, 18b. By successively increasing the pressing force, the surface of the impregnated paper 6a is compressed, thereby further increasing the smoothness.

[0034] For example, if the base material 2 is made of particle board, the surface of the particle board has numerous irregularities and the impregnated paper 6a also has an uneven thickness and not a smooth surface. However, when the impregnated paper 6a is laminated onto the base material 2, the pressing forces of the main and secondary rollers 7a, 7b of the clamping means 7 and the rollers 18a, 18b and rollers 18c, 18d of the pressing means 18 increase successively, so that the smoothness of the surface of the impregnated paper 6a laminated onto the base material 2 increases, and by going through a curing process etc. described below, the hardened impregnated paper 6a is polymerized onto the base material 2 and finished into a decorative board with an excellent mirror finish.

[0035] Returning to Figure 1, reference numeral 19 denotes a preventing means that is provided downstream of the pressing means 18 (downstream in the transport direction of the substrate 2) and prevents the fluid material from seeping out or leaking from the impregnated paper 6a to both sides of the substrate 2 due to the pressing of the pressing means 18. The preventing means is equipped with an electron beam irradiation means that irradiates an electron beam to harden the fluid material, and irradiates an electron beam near both end edges of the impregnated paper 6a, which is slightly wider than the substrate 2, to harden the fluid material (electron beam curable resin) seeping out from both end edges of the impregnated paper 6a, thereby preventing the fluid material from seeping out or leaking.

[0036] Reference numeral 20 denotes a PET film roll on which a transparent PET film having a predetermined thickness, which is a resin film, is wound, and 21 denotes a laminating roller, which is disposed below the PET film roll 20 and comprises an upper main roller 21a and a lower slave roller 21b which, with the PET film 22 unwound from the PET film roll 20 superimposed on the upper surface of the impregnated paper 6a on the upper surface of the substrate 2 being transported, press the PET film 22 from above and below with a predetermined pressure to laminate the PET film 22 onto the impregnated paper 6a. Here, the PET film roll 20 and the laminating roller 21 correspond to the "laminating means" in this invention.

[0037] Also, in FIG. 1, 23 is a curing means consisting of an electron beam irradiation means, which is arranged downstream of the main roller 21a of the laminating roller 21 (downstream in the conveying direction of the substrate 2) and irradiates an electron beam through the PET film 22 onto the impregnated paper 6a polymerized on the substrate 2, thereby curing the electron beam curing resin, which is a fluid material impregnated in the impregnated paper 6a, and bonding the impregnated paper 6a to the substrate 2.

[0038] Reference numeral 24 denotes a peeling means arranged downstream of the curing means 23 (downstream in the conveying direction of the substrate 2) and consisting of a peeling roller which peels off the PET film 22 laminated on the impregnated paper 6a after curing on the substrate 2, and reference numeral 25 denotes a take-up roll which winds up and recovers the PET film 22 peeled off by the peeling means 24.

[0039] By the way, since the fluid material impregnated in the impregnated paper 6a is made of electron beam curable resin, the electron beam is not blocked by a specific color of a predetermined design printed on the impregnated paper 6a as in the case of ultraviolet curable resin, and the electron beam can reach deep into the electron beam curable resin (fluid material) impregnated in the impregnated paper 6a, and the electron beam can be reliably cured. Furthermore, by curing the electron beam curable resin (fluid material) of the impregnated paper 6a with the PET film 22 overlapping it, the surface of the cured impregnated paper 6a can be finished to an excellent mirror finish.

[0040] 1, 27 is a separating means, which is provided downstream of peeling means 33 (downstream in the conveying direction of base material 2) and includes a cutter for cutting base material 2 in a predetermined length in a state in which impregnated paper 6a is polymerized and hardened to adhere, and an actuator for moving this up and down, and base material 2 is separated into a predetermined length by separating means 27 to form decorative board 28 having a mirror surface. Here, impregnated paper 6a wider than the width of base material 2 may be removed by scraping or the like when decorative board 28 is formed.

[0041] By using a film with a flat lower surface that comes into contact with the impregnated paper 6a at a constant thickness as the PET film 22, the impregnated paper 6a can be hardened and its surface finished into a mirror finish. However, by using a film with a rough lower surface with fine irregularities that comes into contact with the impregnated paper 6a at a constant thickness as the PET film 22, the impregnated paper 6a layered on the substrate 2 can be hardened and the PET film can be peeled off, thereby forming the upper surface of the impregnated paper 6a into a matte surface rather than a mirror surface.

[0042] Next, each step of forming the decorative board 28 will be described with reference to the flow chart of FIG.

[0043] As shown in FIG. 4, the gap between the materials of the base material 2 is set to zero (step S1), a fluid material consisting of an electron beam curable resin filled in a material tank 11 is applied to the upper surface of the base material 2 by the impregnation means 10 (step S2), a paper material 6 is laminated onto the base material 2 to which the fluid material has been applied, and the paper material 6 is impregnated with the fluid material by clamping it from above and below with the clamping means 7 and applying pressure to it, thereby forming impregnated paper 6a (step S3), and the impregnated paper 6a laminated onto the base material 2 is pressed sequentially by each pair of rollers of the pressing means 18 to smooth it out (step S4).

[0044] Then, the preventing means 19 hardens the fluid material of the impregnated paper 6a that seeps out from both sides of the substrate 2 due to the pressing force of the pressing means 18, thereby preventing seepage and leakage (step S5), and then a PET film 22 is laminated on the impregnated paper 6a on the substrate 2 (step S6). The hardening means 23 irradiates the impregnated paper 6a with an electron beam to harden the fluid material (electron beam curable resin) impregnated in the impregnated paper 6a, thereby adhering the impregnated paper 6a to the substrate 2 (step S7).

[0045] Thereafter, the PET film 22 is peeled off by the peeling means 24 (step S8), and the base material 2 with the impregnated paper 6a polymerized thereon is separated to a predetermined length by the separation means 27 (step S9), forming a decorative board 28 of a predetermined length and completing the series of processes.

[0046] Therefore, according to the above-mentioned embodiment, impregnated paper 6a is formed by passing the paper material 6 through the fluid material reservoir 16 created by the impregnation means 10, and at that time, the impregnated paper 6a is superimposed on the upper surface of the substrate 2 by being clamped between the main and secondary rollers 7a, 7b of the clamping means 7, and when the impregnated paper 6a is pressed by the pressing means 18, the pressing force of the pressing means 18 increases toward the downstream side in the conveying direction, so that even if the surface of the substrate 2 is uneven, the smoothness of the surface of the impregnated paper 6a superimposed on the substrate 2 can be further increased.

[0047] Therefore, a PET film 22 is laminated onto the smoothed impregnated paper 6a, the fluid material (electron beam curable resin) impregnated in the impregnated paper 6a is cured, and the impregnated paper 6a is bonded to the base material 2 to obtain a decorative panel 28 that can be finished to an excellent mirror finish.

[0048] Furthermore, since a dedicated chamber, as is required when hardening a polypropylene (PP) film by electron beam irradiation, is no longer necessary, the smoothness of the impregnated paper 6a polymerized onto the substrate 2 can be increased with a simple configuration, making it possible to finish the decorative panel 28 with an excellent mirror surface.

[0049] In addition, since the fluid material impregnated in the impregnated paper 6a has adhesiveness due to electron beam curing characteristics, even if a design has been printed on the impregnated paper 6a in advance, the fluid material can be cured sufficiently and evenly when cured by irradiation with an electron beam by the curing means 23 without being blocked by the printing ink as in the case of ultraviolet curing resin. Furthermore, since a predetermined design can be applied to the paper material 6 in advance, it has excellent versatility.

[0050] Furthermore, the restricting means 14 restricts the fluid material (electron beam curable resin) supplied by the impregnating means 10 from spreading beyond the width of the substrate 2, and keeps it within the width of the substrate 2, thereby preventing the fluid material from overflowing beyond the width of the substrate 2 and eliminating waste of the fluid material. At this time, by adjusting the distance between the restricting plates 15, the fluid material impregnated into the impregnated paper 6a after it has been pressed by the pressing means 18 can be spread across the entire width of the impregnated paper 6a in accordance with the width of the impregnated paper 6a.

[0051] Furthermore, since the fluid material does not come into direct contact with the main rollers 7a of the clamping means 7, there is no need to clean them, and no waste is produced, improving work efficiency. Also, since the impregnated paper 6a is bonded to the substrate 2 by the hardening of the fluid material while the substrate 2 is transported by the transport means 3 in a long length, there is no room for the fluid material to spill out on both sides of the substrate 2 in any process, and waste of the fluid material can be more effectively prevented.

[0052] Furthermore, if the surface of the PET film 22 facing the impregnated paper 6a is made rough, it is possible to form a decorative board 28 having a matte surface rather than a mirror finish, or a decorative board 28 having a specified design using unevenness, making it easy to form a decorative board that has excellent design and can be used for a variety of purposes.

[0053] In addition, because the electron beam curing resin, which is a fluid material, is made from more than 50% biomass, it is possible to reduce the amount of electricity consumed and petroleum-derived resin used, as was the case when manufacturing conventional melamine decorative boards (low-voltage and high-voltage melamine decorative boards).This makes it possible to provide environmentally friendly manufacturing processes and products, which is in line with the spirit of the SDGs.

[0054] The present invention is not limited to the above-described embodiment, and various modifications other than those described above can be made without departing from the spirit of the present invention.

[0055] For example, in the above embodiment, an example was shown in which the present invention is applied to a manufacturing apparatus for decorative boards, but the application of the present invention is not limited to the manufacture of decorative boards.

[0056] Furthermore, the prevention means 19 is not limited to being equipped with the electron beam irradiation means described above, but may also be equipped with a means for adding a photopolymerization initiator, for example by coating it, to the fluid material (electron beam curable resin) at the edge portions of the impregnated paper 6a on both sides of the substrate 2 to make it easier to harden when exposed to ultraviolet light, and an ultraviolet LED that irradiates ultraviolet light to harden the fluid material after it has seeped out and to which the photopolymerization initiator has been added.

[0057] In this way, since electron beam curable resin differs from ultraviolet curable resin only in that it does not contain a photopolymerization initiator, a photopolymerization initiator can be added to the fluid material (electron beam curable resin) at both end edges of the impregnated paper 6a, for example by coating it with a photopolymerization initiator, so that it can be hardened by exposure to ultraviolet light.The fluid material (electron beam curable resin) can then be hardened by exposure to ultraviolet light, thereby preventing it from seeping out or leaking from both end edges of the impregnated paper 6a.

[0058] In another embodiment, a configuration consisting of the impregnation means 10, the clamping means 7, the pressing means 18, the blocking means 19, the PET film roll 20, the main roller 21a and the driven roller 21b of the laminating roller 21, the hardening means 23, the peeling means 24 and the winding roll 25 may be provided in multiple stages in the transport direction of the substrate 2.

[0059] At this time, a plurality of pieces of impregnated paper 6a can be laminated and adhered to the base material 2, and by providing different designs on each piece of impregnated paper 6a, the design of the finished decorative board 28 can be diversified by combining the designs.

[0060] Furthermore, the blocking means 19 is not limited to the above-mentioned configuration, and may be a spatula-shaped member that is pressed against both sides of the base material 2 from the impregnated paper 6a by the pressure of the pressing means 18, and scrapes off the fluid material seeping out from both sides of the base material 2 to prevent further seepage, a means for cutting off the impregnated paper 6a that protrudes beyond the width of the base material 2 together with the seeping fluid material, or a sponge-shaped roller that rolls on both sides of the base material 2 to absorb the seeping fluid material and prevent further seepage.

[0061] Moreover, instead of the PET film 22, other resin films that are permeable to electron beams may be laminated.

[0062] The present invention can be widely applied to an impregnated paper polymerization device that polymerizes impregnated paper impregnated with a fluid material onto a plate-shaped substrate transported in a predetermined transport direction by a transport means. [Explanation of symbols]

[0063] 2...Base material 3. Means of transportation 4...Transport roller 6…Paper material 6a … Impregnated paper 7...Holding means 7a ...Main roller 7b ... Subordinate roller 10 ... Impregnation means 16 ... Fluid material reservoir 18 ... Pressing means 19...Means of prevention 20 ... PET film roll (lamination means) 21 ... Lamination roller (lamination means) 22 ... PET film (resin film) 23...curing means 24 ... Peeling means 27...Separation means 28 ... Decorative board

Claims

1. In an impregnated paper polymerization device, impregnated paper impregnated with a fluid material is laminated on a plate-shaped substrate transported in a predetermined transport direction by a transport means, a clamping means having a main roller and a slave roller respectively disposed on the upper surface side and the lower surface side of the base material being conveyed, and clamping the long paper material unwound from the paper feed roll from above and below in a state where the long paper material is overlapped on the upper surface of the base material; an impregnation means for supplying the fluid material across the width of the base material to form a fluid material reservoir at a position upstream of the clamping means in the conveying direction and immediately before the paper material is overlapped, and impregnating the paper material with the fluid material by passing through the fluid material reservoir to form the impregnated paper; a pressing means provided downstream of the clamping means in the conveying direction and configured to press the impregnated paper that has been sandwiched by the clamping means and overlapped on the upper surface of the base material; a blocking means that is provided downstream of the clamping means in the conveying direction and that blocks the fluid material from seeping out from the impregnated paper to both sides of the base material by the pressing force of the pressing means; Equipped with The flowable material has adhesive properties due to electron beam curing characteristics; 13. An apparatus for polymerizing impregnated paper, wherein the pressing force of the pressing means increases toward the downstream side in the conveying direction.

2. 2. The apparatus for polymerizing impregnated paper according to claim 1, wherein the pressing means comprises a plurality of pressing rollers for pressing the impregnated paper layered on the upper surface of the base material.

3. 2. The apparatus for polymerizing impregnated paper according to claim 1, wherein the pressing means comprises a pressing belt for pressing the impregnated paper layered on the upper surface of the base material.

4. 2. The apparatus for polymerizing impregnated paper according to claim 1, wherein the impregnated paper is formed by applying a predetermined printing to the paper material before it is impregnated with the fluid material.

5. 5. The impregnated paper polymerization device according to claim 1, further comprising a hardening means provided downstream of the pressing means for hardening the fluid material impregnated in the impregnated paper by irradiating it with an electron beam.

6. a lamination means provided upstream of the curing means for laminating a resin film on an upper surface of the impregnated paper impregnated with the fluid material; a peeling means provided downstream of the laminating means and configured to peel off the resin film; 6. The apparatus for polymerizing impregnated paper according to claim 5, further comprising:

7. The base material is made of a long wooden board and is formed so as to be separable at predetermined lengths, 7. The apparatus for polymerizing impregnated paper according to claim 6, further comprising a separating means provided downstream of said peeling means for separating said base material at said predetermined length.

8. 2. The impregnated paper polymerization apparatus according to claim 1, wherein the preventing means hardens the fluid material at the edge portions of the impregnated paper on both sides of the base material to prevent the fluid material from seeping out of the impregnated paper.

9. 2. The apparatus for polymerizing impregnated paper according to claim 1, wherein the blocking means is adapted to recover the fluid material that seeps out from the impregnated paper to both sides of the base material due to the pressure of the pressing means.

10. 6. The polymerization apparatus for impregnated paper according to claim 5, wherein the fluid material is made of biomass at 50% or more.

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