JP6549088B2 - Building material panel, its manufacturing method and application - Google Patents

Description

  The present invention relates to a building material panel, a method of manufacturing the same, and a door panel structure.

  In the past, building material panels with good total light transmittance and haze, and having both practicality and privacy protection, are used as materials for windows, for example, when they are used for doors and windows It is often the case. However, since glass materials are expensive to manufacture and heavy, the related industry is expected to develop lightweight door and window materials at low manufacturing costs.

  The building material panels developed so far have good total light transmittance, but there is a clear lack of haze, so there are privacy protection issues in use and good haze for building material panels, but all There is a problem that the light transmittance is obviously insufficient. While this has the effect of protecting the privacy of the individual, it lacks practical value. That is, a light beam can not be transmitted, and the phenomenon that the room becomes dark occurs, and the convenience is not sufficient in actual use. For example, the known backlight module diffusion plate, for example, the technology disclosed in Taiwan Patent No. I 340 854 can not be combined with a good total light transmittance and a haze when applied to a building material panel. Alternatively, although the effect of excellent total light transmittance or haze is achieved, there is a problem of lack of practicality. Further, for example, when rainwater or the like is applied to the surface, the light transmission phenomenon occurs immediately, which may lead to a problem of privacy protection. Therefore, a building material panel that combines good total light transmittance and haze and has a balance between practicality and privacy protection is a pressing issue to be solved in this field.

  An object of the present invention is to provide a building material panel which combines total light transmittance and haze and has a balance between practicality and privacy protection, a method for producing the same and an application thereof.

  In order to achieve the above object, according to one aspect of the present invention, there is provided a building material panel including a light transmitting substrate and a light diffusing layer located on at least one surface of the light transmitting substrate, The diffusion layer includes an optical material and a plurality of first light diffusion particles having an average particle diameter of 6 to 100 μm, and a building material panel having a 10 point average roughness (Rz) on the light diffusion layer of 11 to 28 μm I will provide a.

  Further, according to one aspect of the present invention, the total light transmittance of the light transmitting substrate is 85% to 99%.

  Further, according to one aspect of the present invention, the first light diffusing particle is 10 to 30 parts by weight with respect to 100 parts by weight of the optical material.

  Further, according to one aspect of the present invention, the light diffusion layer further includes a plurality of second light diffusion particles having an average particle diameter of 0.5 to 5 micrometers (μm).

  Further, according to one aspect of the present invention, the second light diffusing particle is more than 0 parts by weight and 5 parts by weight or less with respect to 100 parts by weight of the optical material.

  Further, according to one aspect of the present invention, the second light diffusing particle contains inorganic fine particles or organic fine particles.

  Further, according to one aspect of the present invention, the second light diffusing particle contains a crosslinkable polymer.

  Further, according to an embodiment of the present invention, the first light diffusing particle and the second light diffusing particle are different in kind of material.

  Further, according to one aspect of the present invention, the second light diffusing particle is a silicone resin having a crosslinked siloxane group.

  Further, according to one aspect of the present invention, the first light diffusing particle contains inorganic fine particles or organic fine particles.

  Further, according to one aspect of the present invention, the first light diffusing particle contains a crosslinkable polymer.

  Further, according to one aspect of the present invention, the crosslinkable polymer contains at least one of polysiloxane, polymethyl methacrylate, methyl methacrylate-styrene copolymer, and polystyrene.

  Further, according to one aspect of the present invention, the first light diffusing particle comprises a crosslinkable polymer selected from the group consisting of polystyrene, polymethyl methacrylate and methyl methacrylate-styrene copolymer.

  Further, according to one aspect of the present invention, the light transmitting substrate and the optical material are each independently methyl methacrylate-styrene copolymer (MS), polymethyl methacrylate (PMMA), and polystyrene (PS) Acrylonitrile-styrene (AS), cyclo-olefin copolymer, polyolefin copolymer, polyester, polyethylene, polypropylene, polyvinyl chloride, ionomer (ionomer), polycarbonate (PC) And is selected from the group consisting of

  Further, according to one aspect of the present invention, the light transmitting substrate is selected from the group consisting of polycarbonate, polystyrene, polymethyl methacrylate, and methyl methacrylate-styrene copolymer.

  Further, according to one aspect of the present invention, the ratio of the thickness of the light diffusion layer to the thickness of the light transmitting substrate is 0.02 to 0.9.

  Moreover, according to one aspect of the present invention, the thickness of the light diffusion layer is 50 to 5000 μm.

  Further, according to one aspect of the present invention, an interface between the light diffusion layer and the light transmitting substrate is a flat surface or a curved surface.

  Further, according to an embodiment of the present invention, the light transmitting substrate is a surface facing the bonding surface between the light transmitting substrate and the light diffusion layer, and the surface roughness is 0.002 to 0.5 μm. Have a face that is

  Further, according to one aspect of the present invention, the light diffusion layers are located on two opposing surfaces of the light transmissive substrate.

  Moreover, according to one aspect of the present invention, the light transmittance of the building material panel is 50 to 95%.

  Moreover, according to one aspect of the present invention, the haze of the building material panel is 70 to 99%.

  Moreover, according to one aspect of the present invention, the light transmittance of the building material panel is 50 to 90%.

  Moreover, according to one aspect of the present invention, the haze of the building material panel is 75 to 99%.

  Also according to one aspect of the invention, the thickness of the building panel is between 1 and 20 millimeters (mm).

  Moreover, according to one aspect of the present invention, the average surface roughness of the light diffusion layer is 1.5 to 5.5 μm.

  According to one embodiment of the present invention, there is provided a building material panel including a light transmitting substrate and a light diffusing layer located on at least one surface of the light transmitting substrate, the light diffusing layer comprising an optical material. And a plurality of first light diffusing particles having an average particle diameter of 6 to 100 μm, and the building material panel having an average surface roughness of 1.5 to 5.5 μm.

  According to one embodiment of the present invention, there is provided a bathroom door panel including the building material panel described above.

  According to one embodiment of the present invention, there is provided a door panel structure including a case and a plate material including the building material panel described above and provided in the case.

  According to one embodiment of the present invention, there is provided a kitchen door panel including the above door panel structure.

  According to one embodiment of the present invention, there is provided a bedroom door panel including the above door panel structure.

  According to one embodiment of the present invention, there is provided a meeting room door panel including the above door panel structure.

  According to one embodiment of the present invention, there is provided an office partition including the above door panel structure.

  According to one aspect of the present invention, there is provided a light diffusion comprising the step of providing a first thermoplastic transparent resin, a second thermoplastic transparent resin, and a plurality of first light diffusing particles having an average particle diameter of 6 to 100 μm. Forming a light transmitting substrate and a light diffusion layer in a building material panel by co-extruding the first thermoplastic transparent resin and the light diffusion layer material using a co-extrusion method and a step of providing a layer material And a 10-point average roughness on the light diffusion layer is 11 to 28 μm.

  Moreover, according to one aspect of the present invention, the light diffusion layer material constitutes two light diffusion layers of the building material panel, which are respectively positioned on two opposing surfaces of the light transmitting substrate.

  Moreover, according to one aspect of the present invention, a building material is provided by providing two of the light diffusion layer materials and coextruding the two light diffusion layer materials and the first thermoplastic transparent resin in the coextrusion method. The method further includes the steps of forming a light transmitting substrate of the panel and a light diffusing layer located on two opposing surfaces of the light transmitting substrate, respectively.

  Further, according to one aspect of the present invention, the first thermoplastic transparent resin and the second thermoplastic transparent resin are the same material.

  Further, according to one aspect of the present invention, the first thermoplastic transparent resin and the second thermoplastic transparent resin are different materials.

  According to one aspect of the invention, the building material panel combines good total light transmission and haze, as well as a balance between practicality and privacy protection.

It is a schematic diagram which shows the building material panel which concerns on one Embodiment of this invention. It is a schematic diagram which shows the building material panel which concerns on another embodiment of this invention. It is a schematic diagram which shows the building material panel which concerns on another embodiment of this invention. It is a schematic diagram which shows the building material panel which concerns on another embodiment of this invention. It is a schematic diagram which shows the building material panel which concerns on another embodiment of this invention. It is a schematic diagram which shows the building material panel which concerns on another embodiment of this invention. It is a schematic diagram which shows the door panel structure which concerns on one Embodiment of this invention.

  The present invention will be described in detail below with reference to the drawings and specific embodiments. However, the present invention is not limited to the following contents.

  Embodiments of the present invention will be described in detail. However, the contents cited as the following embodiments are merely examples, and the scope of the present invention is not limited to these embodiments. In addition, the content of the present specification is not intended to disclose every possible embodiment. Each configuration can be changed or modified according to the actual need without departing from the spirit and scope of the present invention. As such, other embodiments not described herein are also applicable. Therefore, the contents described in the specification are merely for describing the embodiment, and do not limit the protection scope of the present invention.

  FIG. 1 is a schematic view showing a building material panel according to an embodiment of the present invention. As shown in FIG. 1, the building material panel 10 includes a light transmissive substrate 100 and a light diffusion layer 110. The light diffusion layer 110 is formed on the light transmissive substrate 100 and is located, for example, on at least one surface of the light transmissive substrate 100. The light diffusion layer 110 includes an optical material and a plurality of first light diffusion particles. The average particle size of the first light diffusing particles is 6 to 100 micrometers (μm). Further, the 10-point average roughness (Rz) on the light diffusion layer 110 is 11 to 28 μm. In one embodiment, the root mean square roughness (Rq) of the light diffusion layer 110 is 2 to 6 μm. In one embodiment, the peak-to-valley maximum roughness (Ry) of the light diffusion layer 110 is 16 to 25 μm. In one embodiment, the diffusion layer side average surface roughness (Ra) of the light diffusion layer 110 is 1.5 to 5.5 μm.

  In one embodiment, the thickness of the light transmissive substrate 100 is greater than 3 mm. When the light transmitting substrate 100 has a thickness of 3 to 4 millimeters (mm), the total light transmittance is preferably 85% or more, more preferably 88% or more, still more preferably 90% or more, still more preferably 92% or more. For example, the total light transmittance of the light transmissive substrate 100 is 85% to 99%, or 90% to 99%. Moreover, it is preferable that the light diffusing particle is not contained in the light transmitting substrate 100. By the combination of the light transmitting substrate 100 and the light diffusing layer 110, the building material panel 10 according to an embodiment of the present invention has more excellent optical properties and also has a more sophisticated glass texture in appearance.

  In one embodiment, the optical material of the light transmissive substrate 100 and the light diffusion layer 110 is an organic resin substrate having light transmittance. In one embodiment, the optical material of the light transmitting substrate 100 and the light diffusion layer 110 is methyl methacrylate-styrene copolymer (MS), polymethyl methacrylate (PMMA), polystyrene (PS), acrylonitrile-styrene ( AS), cyclic polyolefin (cyclo-olefin copolymer), polyolefin copolymer (eg, poly (4-methyl-1-pentene)), polyethylene terephthalate, polyolefin copolymer, polyester, It may be independently selected from the group consisting of polyethylene, polypropylene, polyvinyl chloride, ionomer (ionomer) and polycarbonate (PC). Among them, polycarbonate, polystyrene, polymethyl methacrylate and methyl methacrylate-styrene copolymer are preferable, and polymethyl methacrylate and methyl methacrylate-styrene copolymer are more preferable. In one embodiment, the methyl methacrylate-styrene copolymer is a copolymer comprising methyl methacrylate monomer units and styrene monomer units obtained by copolymerizing a methyl methacrylate monomer with a styrene monomer. It is union. Among them, in the methyl methacrylate-styrene copolymer, the mass ratio (MMA / SM) of the methyl methacrylate monomer unit (MMA) to the styrene monomer unit (SM) is 30/70 to 40/60. Is preferred.

  In one embodiment, the light diffusion layer 110 may further include a plurality of second light diffusion particles, and the average particle diameter of the second light diffusion particles is 0.5 to 5 micrometers (μm). May be

In one embodiment, light diffusing particles (first light diffusing particles and / or second light diffusing particles) are used to adjust the balance between optical properties and practicality to meet industry requirements. For example, it can be used to adjust both the surface roughness and the total light transmittance so as to satisfy desired optical properties and to combine practical shielding and light transmission prevention under water. The first light diffusing particle and the second light diffusing particle in the present invention are, for example, inorganic fine particles represented by glass fine particles, barium sulfate (BaSO ₄ ), calcium carbonate (CaCO ₃ ) and aluminum oxide (Al ₂ O ₃ ). And organic fine particles of polystyrene resin, (meth) acrylic resin, silicone resin, etc. Among them, organic fine particles are preferable. Further, as the organic fine particles, crosslinked organic fine particles are preferable. If the organic fine particles are at least partially crosslinked in the production process, no deformation occurs in the processing process of the light transmitting resin, and therefore the organic fine particles can be maintained in the state of the fine particles. That is, the fine particles are preferably not melted into the light transmitting resin even when heated to the molding temperature of the light transmitting resin, and more preferably organic fine particles of crosslinked (meth) acrylic resin or silicone resin. As a particularly preferable specific example thereof, for example, polymer fine particles based on partially crosslinked methyl methacrylate (inner core made of polybutyl acrylate / polymer having an outer shell made of polymethyl methacrylate), polyethylene rubber Inner core-outer shell type polymer having an inner core and an outer shell (trade name: Paraloid EXL-5136 manufactured by Rohm and Hass), silicone resin having a crosslinked siloxane group (trade name: Tospearl 120 manufactured by Toshiba Silicone Co., Ltd.) Etc.

  In one embodiment, the first light diffusion particle and the second light diffusion particle may be an organic material including, for example, a crosslinkable polymer. The crosslinkable polymer may contain, for example, at least one of polysiloxane, polymethyl methacrylate, methyl methacrylate-styrene copolymer, and polystyrene.

  In addition, it is preferable that the types of materials of the first light diffusing particle and the second light diffusing particle are different from each other. For example, the first light diffusion particles are preferably selected from polystyrene, polymethyl methacrylate, or methyl methacrylate-styrene copolymer, and the second light diffusion particles are preferably selected from silicone resins having a crosslinked siloxane group.

  In one embodiment, the average particle diameter of the first light diffusing particles is 6 to 100 micrometers (μm), preferably 10 to 80 μm, particularly preferably 20 to 75 μm, and further preferably 25 to 75 μm, More preferably, it is 30-70 micrometers. The average particle size of the second light diffusing particles is 0.5 to 5 μm, preferably 0.5 to 4.5 μm, particularly preferably 0.5 to 4 μm, and most preferably 1 to 3.5 μm. The average particle size of these transparent fine particles (that is, the first light diffusing particle and the second light diffusing particle) is a weight average particle size measured by the particle number counting method. As a measuring device, particle number-particle size distribution analyzer MODEL Zm manufactured by Nikkiso Bios Co., Ltd. was used. When the weight-average particle diameter of the first light diffusing particles is less than 6 μm, sufficient light diffusibility can not be obtained, and also there is a possibility that a light emission failure of the light emitting surface may occur. Moreover, when it exceeds 100 μm, sufficient light diffusivity can not be obtained, and there is also a possibility that the aesthetics and optical properties may be impaired due to excessive surface roughness. In addition, when the weight average particle diameter of the second light diffusing particle is less than 0.5 μm, sufficient light diffusibility can not be obtained, and there is a possibility that a light emission failure of the light emitting surface may occur. Besides, sufficient light diffusibility can not be obtained and there is a possibility that the transparency is insufficient.

  The amount of the first light diffusing particles to be used is preferably 10 to 30 parts by weight, particularly preferably 15 to 25 parts by weight, and most preferably 18 to 23 parts by weight with respect to 100 parts by weight of the optical material. . The amount of the second light diffusing particles to be used is preferably 0 to 5 parts by weight, particularly preferably 1 to 4 parts by weight, and most preferably 2 to 3 parts by weight based on 100 parts by weight of the optical material. . If the amount of the first light diffusing particle used is less than 10 parts by weight, the light diffusivity is insufficient, that is, light may be transmitted directly to see an object on the back side, and the privacy in the room can not be protected Will occur. On the other hand, when the amount of the first light diffusing particle used exceeds 30 parts by weight, the total light transmittance becomes too low due to the decrease in light transmittance, and there is a possibility that the object on the back side of the building panel can not be identified directly Cause inconvenience. If the amount of the second light diffusing particles used exceeds 5 parts by weight, the total light transmittance may be too low due to a decrease in light transmittance, and the object on the back side of the building material panel may not be identified directly. Inconvenient occurs. Briefly, the first light diffusing particles are used to adjust the surface roughness, and the second light diffusing particles are used to adjust the haze of the building material panel. However, in practice, both light diffusing particles are correlated with each other. For example, when both light diffusing particles are added together, the total light transmittance of the building material panel and the optical characteristics such as haze are realized by adjusting the addition ratio between the two within an optimal range. Do. In addition, by setting the content within the optimum range, practical values such as shielding properties and light transmission preventing properties under water can be provided together.

  According to the embodiment of the present invention, the building material panel has good total light transmittance and haze, as well as shielding properties and light transmission preventing property under water, and has high structural strength.

  In one embodiment, the optical material and the light transmissive substrate 100 may have substantially the same refractive index.

  Further, according to the embodiment of the present invention, since the light transmitting substrate 100 may not contain any light diffusing particles, it exhibits a transparency similar to a glass material. On the other hand, desired characteristics such as light shielding effect and light transmission preventing property under water can be realized by the haze of the light diffusion layer 110.

  In one embodiment, as shown in FIG. 1, the ratio (T1 / T2) of the thickness T1 of the light diffusion layer 110 to the thickness T2 of the light transmitting substrate 100 is, for example, 0.02 to 0.9. Preferably, the ratio of the thickness T1 of the light diffusion layer 110 to the thickness T2 of the light transmitting substrate 100 is, for example, 0.05 to 0.7, more preferably, for example, 0.07 to 0.5, and most preferably, for example It is 0.08-0.3. In one embodiment, the thickness T1 of the light diffusion layer 110 is, for example, 50 to 5000 μm. The thickness T1 of the light diffusion layer 110 is preferably, for example, 100 to 3000 μm, more preferably, for example, 100 to 1000 μm, and most preferably, for example, 100 to 500 μm.

  The light diffusion layer 110 has a rough surface 110a as shown in FIG. In one embodiment, the root mean square roughness (Rq) of the rough surface 110a of the light diffusion layer 110 is preferably, for example, 2 to 5.5 μm, and most preferably, 2.5 to 5.3 μm. In one embodiment, the ten-point average roughness (Rz) on the rough surface 110 a of the light diffusion layer 110 is preferably, for example, 11 to 28 μm, and most preferably, 12 to 27 μm. In one embodiment, the peak-to-valley maximum roughness (Ry) of the rough surface 110 a of the light diffusion layer 110 is preferably, for example, 17 to 24.5 μm, and most preferably, for example, 20 to 24 μm. In one embodiment, the diffusion layer side average surface roughness (Ra) of the rough surface 110 a of the light diffusion layer 110 is, for example, 1.5 to 5.5 μm, preferably, for example, 1.6 to 5 μm. In one embodiment, a hardened layer may be applied on the rough surface 110 a of the light diffusing layer 110 to improve the surface hardness of the light diffusing layer 110. The thickness of the cured layer is, for example, 10 μm to 30 μm, preferably 10 μm to 20 μm.

  In one embodiment, the interface 100a between the light diffusion layer 110 and the light transmitting substrate 100 may be a flat or curved surface as shown in, for example, FIGS. In the present embodiment, the bonding surface 100 a between the light diffusion layer 110 and the light transmitting substrate 100 is a flat surface.

  As shown in FIG. 1, the light transmissive substrate 100 has a surface 100 b facing the interface 100 a between the light diffusion layer 110 and the light transmissive substrate 100. In one embodiment, the average surface roughness (Ra value) of the surface 100b is, for example, 0.002 to 0.5 μm, more preferably, for example, 0.01 to 0.3 μm, and most preferably, for example, 0.02 to 0. It is 2 μm. In one embodiment, a hardened layer may be applied on the surface 100 b of the light transmitting substrate 100 so as to improve the surface hardness of the light transmitting substrate 100. In one embodiment, the thickness of the hardened layer is, for example, 10 μm to 30 μm, preferably 10 μm to 20 μm.

  In one embodiment, the cured layer may be, for example, a polymethacrylate-based composition containing silicon dioxide and a poly (meth) acrylate-based compound. In one embodiment, as the poly (meth) acrylate compound, for example, polyisooctyl acrylate, isooctyl acrylate-styrene copolymer, isooctyl acrylate-dimethylaminoethyl methacrylate copolymer, isooctyl acrylate-vinyl acetate co-polymer Polymers, polyethyl methacrylate, polyisobutyl methacrylate, polycyclohexyl acrylate, polyisooctyl methacrylate, polydodecyl methacrylate, polyoctadecyl methacrylate, polybenzyl methacrylate, polyethoxymethyl methacrylate, polyhydroxypropylene methacrylate, polydimethylamine ethyl methacrylate, etc. It is.

  According to an embodiment of the present invention, the light transmittance of the building material panel is 50% to 98%. Preferably, the light transmittance of the building material panel is, for example, 60% to 97%. More preferably, the light transmittance of the building material panel is, for example, 70 to 88%. More preferably, the light transmittance of the building material panel is, for example, 70 to 85%, and most preferably, for example, 75 to 85%. In addition, the haze of the building material panel is 70% to 99%, preferably, for example, 75% to 99%, more preferably, for example, 70 to 90%, still more preferably, for example, 80 to 90%, most preferably, for example, 80 to 85 %.

  The optical properties of building material panels vary depending on the place of use. For example, in the case of a bathroom door panel and a kitchen door panel, the light transmittance is 70% to 98% because a high light transmittance is required to obtain light transparency and a spatial openness. Preferably, the light transmittance of the building material panel is, for example, 75% to 90%. In addition, the haze of the building material panel is 75% to 98%, preferably, for example, 77% to 96%. On the other hand, in the case of a private space, for example, a bedroom door panel, a partition door panel for a conference room, etc., privacy is regarded as important, so the light transmittance is 50% to 90%. Preferably, the light transmittance of the building material panel is, for example, 60% to 86%. The haze of the building material panel is 85% to 99%, preferably 90% to 97%, for example.

  In one embodiment, a door panel for a bathroom and a kitchen includes a building material panel having a light transmissive substrate and a single layer light diffusion layer structure. In another embodiment, the door panel for partition of the bedroom and the conference room or the partition for office includes a building material panel having a light transmitting substrate and a two-layered light diffusion layer structure at the upper and lower sides.

  According to an embodiment of the present invention, the thickness of the building material panel is 1 to 20 mm (mm), preferably the thickness of the building material panel is 2 to 15 mm, more preferably the thickness of the building material panel is 3 to 10 mm, Most preferably, the thickness of the building material panel is 3 to 5 mm.

  Moreover, according to the embodiment of the present invention, the building material panels 10 to 30 are produced by, for example, a co-extrusion method. The method of manufacturing a building material panel includes, for example, providing a first thermoplastic transparent resin for forming the light transmitting substrate 100, and providing a light diffusing layer material for forming the light diffusing layer 110. And forming the light transmitting substrate 100 and the light diffusion layer 110 in the building material panels 10 to 30 by coextruding the first thermoplastic transparent resin and the light diffusion layer material using a co-extrusion method, May be included.

  Describing by way of example, the first thermoplastic transparent resin (the material of the light transmitting substrate 100) is heated, pressurized and extruded using a first extrusion device (not shown). Also, together with this, using a second extrusion device (not shown) separately, the first light diffusing particles (average particle diameter, for example, 6 to 100 μm) and the second light diffusing particles (average particle diameter, for example 0.5 to 0.5) The second thermoplastic transparent resin (material of the light diffusion layer 110) mixed with 5 μm) is extruded under the same extrusion temperature as the first extruder. Subsequently, coextruding the first extrudate from the first extruder and the second extrudate from the second extruder through a multi-manifold die (not shown). Then, the building material panel 10 including the light diffusion layer 110 and the light transmitting substrate 100 is formed. In one embodiment, the first thermoplastic transparent resin and the second thermoplastic transparent resin may be the same material or different materials.

  In another embodiment, the extrudate from the first extruder and the extrudate from the second extruder are coextruded using a feedblock die (not shown).

  In another embodiment, the extrusion temperatures of the first and second extruders are different, while the first and second extrudates are discharged from the first and second extruders. The discharge temperature may be the same. The discharge temperature of the first extrudate and the second extrudate is 220 ° C to 290 ° C, preferably 240 ° C to 270 ° C.

  FIG. 2 is a schematic view showing a building material panel according to another embodiment of the present invention. FIG. 3 is a schematic view showing a building material panel according to still another embodiment of the present invention. In the two embodiments, the same or similar members as those in the embodiment described above are given the same or similar member numbers. Also, the description of the similar or similar members is as described above, and the re-explanation is omitted here. The two embodiments are the main difference from the embodiment shown in FIG. 1 in that the bonding surface 100a is designed as a curved surface.

  As shown in FIG. 2, the bonding surface 100 a of the light diffusion layer 110 and the light transmitting substrate 100 in the building material panel 20 is a curved surface recessed toward the light transmitting substrate 100. Moreover, as shown in FIG. 3, the joint surface 100a of the light-diffusion layer 110 and the light-transmissive substrate 100 in the building material panel 30 is a curved surface which protrudes to the light-diffusion layer 110 side.

  In the building material panels 20 and 30 illustrated in FIGS. 2 to 3, the light transmitting substrate 100 has a surface 100 b facing the interface 100 a between the light diffusion layer 110 and the light transmitting substrate 100. In one embodiment, the average surface roughness (Ra value) of the surface 100b is, for example, 0.002 to 0.5 μm, more preferably, for example, 0.01 to 0.3 μm, and most preferably, for example, 0.02 to 0. It is 2 μm.

  FIG. 4 is a schematic view showing a building material panel according to another embodiment of the present invention. In this embodiment, the same or similar members as those in the embodiment described above are given the same or similar member numbers. Also, the description of the similar or similar members is as described above, and the re-explanation is omitted here.

  In the embodiment shown in FIG. 4, the light diffusion layer 110 of the building material panel 40 is formed on two opposing surfaces (the bonding surface 100 a and the surface 100 b) of the light transmitting substrate 100. In the present embodiment, two bonding surfaces (a bonding surface 100 a and a surface 100 b) are provided between the light transmitting substrate 100 and the light diffusion layer 110.

  According to this embodiment, the building material panel 40 is produced, for example, by a co-extrusion method. The method of manufacturing the building material panel 40 is substantially the same as the method of manufacturing the building material panels 10 to 30 described above, but before the coextrusion of the second extrudate by the second extrusion device, a diversion step is performed first, or The use of a tri-extruder (not shown) differs only in that two light diffusing layers of the second extrudate are respectively formed on two opposing surfaces of the light transmissive substrate.

  FIG. 5 is a schematic view showing a building material panel according to still another embodiment of the present invention. FIG. 6 is a schematic view showing a building material panel according to still another embodiment of the present invention. In the two embodiments, the same or similar members as those in the embodiment described above are given the same or similar member numbers. Also, the description of the similar or similar members is as described above, and the re-explanation is omitted here. The two embodiments are the main difference from the embodiment shown in FIG. 4 that the bonding surface 100a is designed as a curved surface.

  As shown in FIG. 5, the two bonding surfaces (the bonding surface 100a and the surface 100b) of the two light diffusion layers 110 and the light transmitting substrate 100 in the building material panel 50 are both recessed toward the light transmitting substrate 100 side. It is a curved surface. Further, as shown in FIG. 6, both of the two bonding surfaces (bonding surface 100 a and surface 100 b) of the two light diffusion layers 110 and the light transmitting substrate 100 in the building material panel 60 project toward the light diffusion layer 110. Is a curved surface. In another embodiment, one of the two bonding surfaces (the bonding surface 100 a and the surface 100 b) of the two light diffusion layers 110 and the light transmitting substrate 100 is a curved surface recessed toward the light transmitting substrate 100. The other may be a curved surface protruding toward the light diffusion layer 110 (not shown).

  FIG. 7 is a schematic view showing a door panel structure according to an embodiment of the present invention. As shown in FIG. 7, the door panel structure 70 includes a housing 710 and a plate 720, and the plate 720 is surrounded by the housing 710. The plate member 720 includes any one of the building material panels 10 to 60 described above.

  According to one embodiment of the present invention, the door panel structure manufactured using the building material panels 10 to 60 according to each of the above-described embodiments has a good total light transmittance and a haze and a high structural strength. , Has achieved high safety.

  A UV absorber may be used for the light diffusion layer 110 as needed. Examples of the UV absorber include benzophenone-based UV absorbers such as 2,2′-dihydroxy-4-methoxybenzophenone, 2- (4,6-diphenyl-1,3,5-triazine-2-substituent Triazine-based ultraviolet absorbers such as 5-hexylhydroxyphenol, 2- (2H-benzotriazole-2-substituent) -4-methylphenol, 2- (2H-benzotriazole-2-substituent) -4 -T-Octylphenol, 2- (2H-benzotriazole-2-substituent) -4,6-bis (1-methyl-1-phenylethyl) phenol, 2- (2H-benzotriazole-2-substituent)- 4,6-bis-t-pentylphenol, 2- (5-chloro-2H-benzotriazole-2-substituent) -4-methyl-6-t-butylphenyl Nole, 2- (5-chloro-2H-benzotriazole-2-substituent) -2,4-t-butylphenol, and 2,2'-methylenebis [6- (2H-benzotriazole-2-substituent)- There are benzotriazole-based ultraviolet absorbers such as 4- (1,1,3,3-tetramethylbutyl) phenol]. Among them, 2- (2-hydroxy-5-methylphenyl) benzotriazole, 2- (2-hydroxy-5-t-octylphenyl) benzotriazole, 2- (2-hydroxy-3,5-diisopropylphenyl) phenylbenzo Triazole, 2- (2-hydroxy-3-t-butyl-5-methylphenyl) -5-chlorobenzotriazole, 2,2'-methylenebis [4- (1,1,3,3-tetramethylbutyl)- 6- (2H-benzotriazole-2-substituent) phenol] and 2- [2-hydroxy-3- (3,4,5,6-tetrahydrophthalimidomethyl) -5-methylphenyl] benzotriazole are preferred. 2- (2-hydroxy-5-t-octylphenyl) benzotriazole, 2,2'-methylenebis [4- (1,1,3,3-tetramethylbutyl) -6- (2H-benzotriazole-2-) Substituent group) phenol] is more preferable. The ultraviolet absorber may be used alone or in combination of two or more.

  In addition, a fluorescent agent may be used in the light diffusion layer 110 as needed. The fluorescent agent is, for example, a toluylene type, benzimidazole type, benzoxazole type, phthalimide type, rosein type, coumarin type, oxazole type compound, etc. as one that changes the color tone of a synthetic resin or the like to white or water.

  In addition, an antioxidant may be used in the light diffusion layer 110 as needed. Examples of the antioxidant include phenol-based antioxidants, sulfide-based antioxidants, and phosphorus-based antioxidants. Representative phenolic antioxidants are octadecyl (3,5-di-t-butyl-4-hydroxyphenyl) propionate, triethylene glycol bis [3- (3-t-butyl-5-methyl-4-hydroxyphenyl) ) Propionate], tetra [methylene 3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate] methane, 2-t-butyl-6- (3-t-butyl-2-hydroxy-6-) Methylbenzyl) -4-methylphenyl acrylate, 2,2'-methylenebis (4-methyl-6-t-butylphenol), 2,2'-thiobis (4-methyl-6-t-butylphenol), 2,2 ' -Thiodiethylene-bis [3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate], 2,2'-oxalamido-bis [ethyl 3- (3,5-di-t- butyl-4-hydroxyphenyl) propionate] and the like. Representative sulfide-based antioxidants include distearoyl thiodipropionate, dipalmitoyl thiodipropionate, pentaerythritol-tetra (β-dodecyl-thiopropionate), bisoctadecyl sulfide and the like. The phosphorus-based antioxidants include phosphite-based antioxidants and phosphoric acid-based antioxidants, and typical examples thereof include tris (nonylphenyl) phosphite, dodecyl phosphite, and cycloneopentane-. Tetrahydronaphthalene bis (octadecyl phosphite), 4,4′-butylidene bis (3-methyl-6-t-butylphenyl ditridecyl phosphite), tris (2,4-di-t-butylphenyl) phosphite, tetra ( 2,4-di-t-butylphenyl) -4,4'-biphenyl phosphate, 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and the like.

  Hereinafter, although an embodiment of the present invention is described, the present invention is not limited to this.

  Evaluation items and methods are as follows.

(A) Total light transmittance It measured according to JIS K-7361 using Haze meter NDH2000 made from Nippon Denshoku Industries Co., Ltd. product. In the present embodiment, measurement was performed using a 4 mm plate material.

(B) Haze
The measurement was performed according to JIS K-7361 using Haze meter NDH2000 manufactured by Nippon Denshoku Kogyo Co., Ltd. In the present embodiment, measurement was performed using a 4 mm plate material.

(C) Observation of privacy shielding property In a space of 300 illuminance (Lux), erect a building material panel 30 cm in front of the human eye. In addition, a pair of parallel lines each having a width of 5 mm and an interval of 5 mm as an object is placed on the back side of the building material panel in the vertical view direction of the building material panel, and the distance between the object and the building material panel is 1 cm. To install. Then, after installation, the object was moved away from the building material panel in a direction away from human eyes, and the distance at which the distance between the two lines was not visible was measured. In the case where the distance is 30 cm or less, 30, in the case of 30 cm to 60 cm, △, and in the case of 60 cm or more, x.

(D) Observation of light transmission preventing property under water hanging It was observed whether the light transmitting property of the building material panel is affected by the water attached to the surface of the building material panel. After erecting a building material panel 30 cm from the human eye, a pair of parallel lines each having a width of 5 mm and a distance of 5 mm from each other as an object, the back side of the building material panel in the vertical view direction of the building material panel The distance between the object and the building material panel was set to 5 cm. Subsequently, after wiping the outer surface (for example, 110 shown in FIG. 1) of the light diffusion layer of the building material panel with a sufficiently infiltrated cloth, it is visually judged whether the two lines are clearly visible from the wiped surface side did. If it can not be determined, it is ○, and if two lines are visible, it is x.

(E) Measurement of surface roughness (Ra / Ry / Rq / Rz) The surface roughness was measured using a portable surface roughness meter SJ-210 manufactured by Taiwan Sanfeng Keiki Co., Ltd. The surface roughness (numerical values such as Ra / Ry / Rq / Rz) was measured by moving the SJ-210 probe on the surface of the building material panel. The movement range of the probe was 4 mm (mm).

Example 1
100 parts by weight of PM-500G manufactured by Taiwan Biei Business Co., Ltd. as a methyl methacrylate-styrene copolymer and 15 parts by weight of first light diffusing particles (polymethyl methacrylate fine particles; average particle diameter 45 μm) were mixed to form a light diffusing layer . On the other hand, 100 parts by weight of PM-500G manufactured by Taiwan Biei Business Co., Ltd. is prepared as a methyl methacrylate-styrene copolymer, and a material for forming a light transmitting substrate (when the material is formed into a plate having a thickness of 3 mm, total light transmission The rate was 92%). Using a two-layer coextrusion machine maintained at a cylinder temperature of 240 to 270 ° C and a die temperature of 250 ° C, a single-layer light diffusion layer type building material having a total thickness of 4 mm so that the thickness of the light diffusion layer is 200 μm A panel was made. The building material panel has an average surface roughness of 3.8 μm when the light diffusion layer is included, an average surface roughness of 0.02 μm when the light diffusion layer is not included, and a ten-point average roughness (Rz) of 17.4. The maximum roughness (Ry) from the peak to the valley was 23.4 μm. Items such as the total light transmittance, the haze, and the visual observation of the building material panel measured as described above are shown in Table 2 below.

Example 2
In addition to the first diffusion particles, 3.5 parts by weight of the second light diffusion particles (silicone resin type transparent particles; average particle diameter 2.0 μm) is added to the light diffusion layer, and the thickness of the light diffusion layer is 160 μm. Except for the above, this embodiment is the same as the first embodiment. The building material panel has an average surface roughness of 3.1 μm when the light diffusion layer is included, an average surface roughness of 0.03 μm when the light diffusion layer is not included, and a 10-point average roughness (Rz) of 14.4. The maximum roughness (Ry) from 4 μm to peak to valley was 21.0 μm.

Example 3
Example 3 is the same preparation method as Example 2, but the difference features with Example 2 are as shown in Table 1. Items such as values of surface roughness, total light transmittance, haze, and visual observation when the building material panel includes a light diffusion layer are shown in Table 2.

Example 4
The amount of the first light diffusing particles used was 20 parts by weight each. The amount of the second light diffusing particles used was 0.6 parts by weight each. The formation thickness of the light diffusion layer on both sides was 400 μm respectively. Then, using a three-layer coextrusion molding machine, a two-layer light diffusion layer type building material panel having a total thickness of 4 mm was produced. Except for these, the second embodiment is the same as the second embodiment. Items such as values of surface roughness, total light transmittance, haze, and visual observation when the building material panel includes a light diffusion layer are shown in Table 2.

Examples 5 to 9
Examples 5 to 9 are the same manufacturing method as Example 4, but the features different from Example 4 are as shown in Table 1. Items such as values of surface roughness, total light transmittance, haze, and visual observation when the building material panel includes a light diffusion layer are shown in Table 2.

Comparative Example 1
100 parts by weight of PM-500G manufactured by Taiwan Biei Business Co., Ltd. as a methyl methacrylate-styrene copolymer, 15 parts by weight of first light diffusing particles (polymethyl methacrylate fine particles; average particle diameter 45 μm), and second light diffusing particles (silicone resin) Transparent fine particles: 1 part by weight of average particle diameter 2.0 μm were mixed. After mixing, a building material panel having a total thickness of 4 mm was produced by molding using a co-extrusion molding machine maintained at a cylinder temperature of 240 to 270 ° C. and a die temperature of 250 ° C. Items such as the total light transmittance, the haze, and the visual observation of the building material panel measured as described above are shown in Table 2 below.

Comparative Example 2
Comparative Example 1 is the same as Comparative Example 1 except that only the first light diffusing particle is used without using the second light diffusing particle. Items such as values of surface roughness, total light transmittance, haze, and visual observation when the building material panel includes a light diffusion layer are shown in Table 2.

Comparative Example 3
Comparative Example 1 is the same as Comparative Example 1 except that neither the first light diffusing particle nor the second light diffusing particle is used. Items such as values of surface roughness, total light transmittance, haze, and visual observation when the building material panel includes a light diffusion layer are shown in Table 2. In Table 2, Tt represents total light transmittance, and Hz represents haze.

実施例７では、光拡散層と光透過性基板との接合面は、図５に示すような曲面構造である。建材パネルの左右両端および中央における粗さ、光拡散層の厚さ、および他の実験データについての測定値は、下表の通りである。

In Example 7, the bonding surface between the light diffusion layer and the light transmitting substrate has a curved surface structure as shown in FIG. The measured values for the roughness at the left and right ends and the center of the building material panel, the thickness of the light diffusion layer, and other experimental data are as shown in the table below.

上記の実施例および比較例から分かるように、比較例１〜２は、第１および第２光拡散粒子を含む点で実施例とは同様であるが、透明基板を含んでいないため、全光線透過率が悪く、光透過率が水の影響を受けやすく、実用的価値が低い。また、比較例３は、透明基板を用いたが、光拡散層を含んでいないため、遮蔽効果が不十分で、建材パネルとして使用することができない。実施例８〜９は、３０％を超えた含量の第１光拡散粒子、または５％を超えた含量の第２光拡散粒子を使用したため、遮蔽效果が劣るが、全体的性質においては比較例１〜３よりも勝る。

As can be seen from the above Examples and Comparative Examples, Comparative Examples 1 and 2 are the same as the Examples in that they contain the first and second light diffusing particles, but since they do not contain a transparent substrate, all light rays are included. The transmittance is poor, the light transmittance is easily affected by water, and the practical value is low. Moreover, although the transparent substrate was used for the comparative example 3, since the light-diffusion layer was not included, the shielding effect is inadequate and it can not use as a building-material panel. Although Examples 8-9 used the 1st light diffusion particle of the content over 30%, or the 2nd light diffusion particle of the content over 5%, although the shielding effect is inferior, it is a comparative example in the whole property. Overwhelms one to three.

  As can be seen from the above Examples and Comparative Examples, the light transmissive substrate contained in the building material panel and the light diffusion layer appropriately adjusted to the light diffusion particles have suitable light transmittance and optical characteristics such as haze. In addition, it can be provided with practical value such as shielding property and light transmission preventing property under water.

  Of course, the present invention also includes other various embodiments. Those skilled in the art can make various changes and modifications based on the present invention without departing from the spirit and essence of the present invention. However, such modifications and variations are also included in the claims of the present invention.

10 to 60 building material panel 70 door panel structure 100 light transmitting substrate 100a bonding surface 100b surface 110 light diffusion layer 110a rough surface 710 housing 720 plate material T1, T2 thickness

Claims (4)

A light transmitting substrate,
A building material panel comprising: a light diffusing layer located on at least one surface of the light transmitting substrate;
The light diffusion layer includes an optical material, a plurality of first light diffusing particles having an average particle diameter of 6 to 100 μm, and a plurality of second light diffusing particles having an average particle diameter of 0.5 to 5 μm .
The 10-point average roughness on the light diffusion layer is 11 to 28 μm,
The thickness of the light diffusion layer is 100 to 3000 μm,
The total light transmittance of the light transmitting substrate is 85% to 99%,
The ratio of the thickness of the light diffusion layer to the thickness of the light transmissive substrate is 0.05 to 0.7,
10 to 30 parts by weight of the first light diffusing particles with respect to 100 parts by weight of the optical material, and 0 parts by weight of the second light diffusing particles with respect to 100 parts by weight of the optical material 5 parts by weight or less,
A building material panel characterized in that the light transmittance of the building material panel is 77 to 95% . The building material panel according to claim 1 , wherein a bonding surface of the light diffusion layer and the light transmitting substrate is a flat surface or a curved surface. A bathroom door panel comprising the building material panel according to claim 1 or 2 . And
It is a door panel structure characterized by including the building material panel according to claim 1 or 2 , and the board provided in the case.
A door panel including the door panel structure, wherein the door panel is selected from the group consisting of a kitchen door panel, a bedroom door panel, a conference room door panel, and an office partition.

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