JP2022162526A - Architectural panel and fitting device equipped therewith, and method for manufacturing architectural panel - Google Patents

Abstract

To improve sound insulation performance.SOLUTION: An architectural panel includes: a front panel 21 and a back panel 22 which are arranged in a spaced-apart manner in a panel thickness direction; a front side inner bone 27 which is in contact with an inner surface of the front panel 21; and a back side inner bone which is in contact with an inner surface of the back panel 22. The front side inner bone 27 and the back side inner bone 28 are arranged in a spaced-apart manner in the panel thickness direction and have reinforcing pieces 27b and 28b, respectively, protruding inwardly in the panel thickness direction. The front side inner bone 27 and the back side inner bone 28 act as a medium to prevent vibration and sound from being transmitted and to prevent vibration and sound from increasing due to resonance between front and back side members.SELECTED DRAWING: Figure 3

Description

The present invention relates to fittings (including doors, doors, windows, shoji screens, etc.), architectural panels used as partitions, shutter curtains, etc., fitting devices equipped with these architectural panels, and construction panel manufacturing methods. It is.

Conventionally, in this type of invention, for example, as described in Patent Document 1, between the top plate and the back plate spaced apart in the door thickness direction, a rib having a cross-sectional groove-shaped steel shape extending in the vertical direction is provided. There is a metal door that is reinforced so that it does not bend, etc., by providing a plurality of doors at intervals in the direction.

JP 2016-188468 A

By the way, according to the above conventional technology, when there is a noise source on the outdoor side or indoor side, the ribs function as a sound bridge that transmits sound as vibration, and the sound of the noise source is transmitted from the front plate to the back plate. or from the back plate to the front plate.

In view of such problems, the present invention comprises the following configurations.
A front plate and a back plate spaced apart in the thickness direction of the panel, a front backbone in contact with the inner surface of the front plate, and a back backbone in contact with the inner surface of the back plate, wherein the front backbone and the back side 1. A building panel, wherein the backbone has reinforcing pieces spaced apart in the panel thickness direction and protruding inward in the panel thickness direction.

ADVANTAGE OF THE INVENTION Since this invention is comprised as demonstrated above, it can improve sound insulation performance.

1 is a front view showing a fitting device provided with an example of a construction panel according to the present invention, showing an internal structure with a main part cut away. It is an exploded perspective view of a panel of the fitting device. 1 is a cross-sectional view showing an example of a building panel according to the present invention; FIG. (a) is an enlarged cross-section of a main part of the building panel. (b) and (c) are respectively enlarged cross-sectional views of essential parts showing other examples of the building panel according to the present invention. 4 is a graph and a table showing results of measurement of acoustic equivalent loss for building panels according to the present invention. The upper figure is a cross-sectional view showing a conventional building panel, and the lower graph and table show the results of measuring the acoustic equivalent loss of the building panel.

The present embodiment discloses the following features.
A first feature comprises a front plate and a back plate spaced apart in the panel thickness direction, a front backbone in contact with the inner surface of the front plate, and a back backbone in contact with the inner surface of the back plate, The front-side backbone and the back-side backbone were separated in the panel thickness direction and had reinforcing pieces protruding inward in the panel thickness direction to form a building panel (see FIGS. 1 to 4).

As a second feature, the natural frequency of the front side member including the front plate and the front backbone is different from the natural frequency of the back side member including the back plate and the back side backbone.

As a third feature, the reinforcing piece of the front side backbone and the reinforcing piece of the back side backbone are different in position in the panel surface direction (see FIGS. 2 to 4).

As a fourth feature, the number of reinforcement pieces differs between the front side backbone and the back side backbone (see FIGS. 2 to 4).

As a fifth feature, the reinforcing piece of the front-side backbone and the reinforcing piece of the back-side backbone are curved in the panel surface direction on the protruding end side of the protruding portion protruding inward in the panel thickness direction. It has a piece portion, and the curved piece portion of the front side backbone and the curved piece portion of the back side backbone are different in length in the bending direction (see FIGS. 2 to 4).

As a sixth feature, the building panel according to any one of claims 1 to 5 (see FIGS. 3 and 4) is characterized in that the thickness of the front-side backbone and the back-side backbone are different.

As a seventh feature, the front side backbone and the back side backbone are asymmetrical in the panel thickness direction (see FIGS. 2 to 4).

As an eighth feature, the mass of the front member including the front plate and the front backbone is different from the mass of the back member including the back plate and the back backbone.

As a ninth feature, the area of the portion where the front side backbone contacts the front plate and the area of the portion where the back side backbone contacts the back plate are different (see FIGS. 3 and 4).

As a tenth feature, a rib is provided between the inner surface of the peripheral side of the top plate and the inner surface of the peripheral side of the back plate and is in contact with both inner surfaces, and the rib is the inner surface of the top plate. The area of the portion in contact with the back plate is different from the area of the portion in contact with the inner surface of the back plate (see FIGS. 3 and 4).

As an eleventh feature, an elastic body is provided between at least one of the front side middle rib and the back side middle rib and a portion facing the front side middle rib in the panel thickness direction ( See FIG. 4(c)).

A twelfth characteristic is that a fitting device is constructed by comprising the building panel (see FIGS. 1 and 2).

A thirteenth feature of the method for manufacturing a building panel is at least one of a step of joining the front side backbone to the front plate and a step of joining the back side backbone to the back plate. including the steps of

A fourteenth feature is that the front side middle rib and the back side middle rib are joined to the frame inner side of the frame-shaped aggregate to form an integrated aggregate unit, and the front plate, the aggregate unit, and the back plate and the step of overlapping and joining.

As a fifteenth feature, the joining includes joining by welding.

As a sixteenth feature, the bonding includes bonding via an adhesive.

<Specific embodiment>
Next, specific embodiments having the above characteristics will be described in detail with reference to the drawings.
In this specification, the panel thickness direction means the thickness direction of the building panel (door body). Moreover, the panel surface direction means the direction in which the front surface or the rear surface of the building panel extends. The panel plane direction includes the panel width direction, the panel vertical direction, and the like.
Further, in this specification, for the sake of convenience, the outdoor side is referred to as the front side, and the indoor side is referred to as the back side, but the relationship between the front and back sides can be reversed.

Figures 1 and 2 show a joinery device provided with an example of a building panel according to the invention.
This fitting device 1 comprises a rectangular frame-shaped frame 10, a door 20 (construction panel) for opening and closing an opening in the frame, and a hinge 30 for opening and closing the door 20 on the door bottom side. Prepare.

The frame body 10 is configured in a rectangular frame shape by comprising horizontal horizontal frame members 11 and 12 vertically spaced apart and vertical vertical frame members 13 and 14 horizontally spaced apart. It is fixed to the opening of the frame such as.
The horizontal frame members 11, 12 and the vertical frame members 13, 14 are each formed in a long straight line from a hard metal material. These are integrated by welding or the like.

The door 20 constitutes an example of a building panel according to the present invention.
The door body 20 includes a front plate 21 and a back plate 22 spaced apart in the panel thickness direction (in the illustrated example, the door thickness direction), and between both inner surfaces of the front plate 21 and the back plate 22 on the peripheral edge side. Positioned upper, lower, left and right ribs 23, 24, 25, 26, a front middle rib 27 fixed along the inner surface of the front plate 21, and a back middle bone 28 fixed along the inner surface of the back plate 22, A core material 29 filled in the space between the front plate 21 and the back plate 22 is provided.

The front plate 21 and the back plate 22 are each formed of a hard metal material in a substantially rectangular plate shape when viewed from the front.
The front plate 21 of the illustrated example has folded pieces 21a bent toward the back plate 22 at its upper end and left and right ends (see FIG. 2).
Similarly, the back plate 22 also has folded pieces 22a bent toward the front plate 21 at its upper end and left and right ends.

The upper and lower ribs 23, 24 are each formed into a long channel steel shape from a hard metal material. These ribs 23 and 24 are located on the upper end side and the lower end side between the front plate 21 and the back plate 22, respectively. Both of these ribs 23 and 24 are fixed in contact with the inner surfaces of both the front plate 21 and the back plate 22 .

The left and right ribs 25 and 26 are each formed in an elongated shape from a hard metal material, and both are fixed in contact with the inner surfaces of both the front plate 21 and the back plate 22 .
These ribs 25 and 26 have different areas in contact with the inner surface of the front plate 21 and in contact with the inner surface of the back plate 22 .

More specifically, the door tip side rib 25 consists of a long plate-like door tip side piece 25a extending in the vertical direction and a door bottom side piece 25a on one side in the panel thickness direction of the door tip side piece 25a. The curved piece portion 25b is bent inward and the curved piece portion 25c is bent in the door bottom direction on the other side in the panel thickness direction of the door tip side piece portion 25a. (See FIG. 4).
One curved piece portion 25b has a larger dimension in the panel thickness direction than the other curved piece portion 25c. Therefore, the area where the curved piece 25b contacts the inner surface of the top plate 21 is larger than the area where the curved piece 25c contacts the inner surface of the back plate 22 .

The ribs 26 on the door bottom side are formed to have a laterally symmetrical cross-sectional shape with respect to the ribs 25 on the door tip side. and
One curved piece 26b has a larger dimension in the panel thickness direction than the other curved piece 26c, and the area of contact with the inner surface of the top plate 21 is larger than the area of contact of the other curved piece 26c with the inner surface of the back plate 22. is also big.

The front side backbone 27 and the back side backbone 28 are provided as a pair so as to be spaced apart in the panel thickness direction with a space therebetween. There is no contact between the front side backbone 27 and the back side backbone 28 .
As shown in FIG. 3, these front-side intermediate ribs 27 and back-side intermediate ribs 28 are arranged in a plurality of sets (illustrated example) at intervals in the panel width direction so as to divide the space between the door tip portion and the door bottom portion. two sets) are provided.

The front side backbone 27 and the back side backbone 28 of each set differ in shape, thickness, mass, and the like.
In addition, each set of the front side backbone 27 and the back side backbone 28 has reinforcing pieces protruding inward in the panel thickness direction at different positions in the panel surface direction (in the illustrated example, the door width direction) (Fig. 3 reference). The number of reinforcement pieces of the front side middle rib 27 and the number of reinforcement pieces of the back side middle rib 28 are different.

More specifically, the front middle rib 27 includes a contact piece 27a that flatly contacts the inner surface of the front plate 21, and a reinforcement extending from one end of the contact piece 27a in the width direction toward the inside in the panel thickness direction. It has a piece 27b and a reinforcing piece 27c extending in the panel thickness direction from the other end of the contact piece portion 27a in the width direction. It is continuous in a long shape. The thickness t1 of the front middle rib 27 is approximately 1.6 mm according to this embodiment.

One reinforcing piece 27b has a projecting piece portion 27b1 that projects inward in the panel thickness direction and a curved piece portion 27b2 that is bent inward in the panel width direction along the panel surface on the projecting end side of the projecting piece portion 27b1.
The other reinforcing piece 27c is formed in a flat plate shape having a larger protrusion than the projecting piece 27b1.
None of the two reinforcing pieces 27b and 27c come into contact with other back side members (the back plate 22 and the back side backbone 28).

In addition, the backside central rib 28 has a contact piece 28a that flatly contacts the inner surface of the back plate 22, and a reinforcing piece 28b that protrudes in the panel thickness direction from one end of the contact piece 28a in the width direction. The contact piece 28a is adhered or welded to the inner surface of the back plate 22, and is continuous in the vertical direction.
The area where the contact piece 28 a contacts the inner surface of the back plate 22 is larger than the area where the contact piece 27 a contacts the inner surface of the front plate 21 .

The thickness t2 of the back side backbone 28 is greater than the thickness of the front side backbone 27, and according to this embodiment is about 2.3 mm. The mass of the back side backbone 28 is greater than the mass of the front side backbone 27 .

The reinforcing piece 28b has a projecting piece portion 28b1 that projects inward in the panel thickness direction, and a curved piece portion 28b2 that is bent in the panel width direction along the panel surface on the projecting end side of the projecting piece portion 28b1. The reinforcing piece 28b is positioned between the two reinforcing pieces 27b and 27c of the front middle rib 27 so as not to come into contact with the members on the front plate 21 side (the front plate 21 and the front middle rib 27). By arranging the reinforcing pieces in this way, it is possible to prevent the reinforcing pieces from interfering with each other and to secure a large amount of protrusion of each reinforcing piece in the panel thickness direction. The bending suppressing effect can be improved.

The curved piece portion 27b2 of the front side backbone 27 and the curved piece portion 28b2 of the back side backbone 28 have different lengths in the bending direction (panel width direction). is smaller than the length of the curved piece 28b2.

The core material 29 is made of glass wool, foamed resin, or paper such as cardboard. The core material 29 is filled between the front rib 25 and the front middle rib 27 on the front side, between the front middle ribs 27, 27 on both sides, between the front rib 26 and the front middle rib 27 on the door bottom side, and the like. ing. The core material 29 is provided for the purpose of improving sound insulation and heat insulation, suppressing vibration, increasing strength, etc., but it is also possible to omit it.

In the door body 20 configured as described above, the front plate 21 and the back plate 22 are symmetrical and have substantially the same shape and thickness in the panel thickness direction, and the front side central rib 27 and the rear side central rib 28 are asymmetrical in the panel thickness direction. and different thicknesses.
Therefore, in the door body 20 , the mass of the front side members such as the front plate 21 and the front side backbone 27 is different from the mass of the back side members such as the back plate 22 and the back side backbone 28 . According to the illustrated example, the mass of the front side member (the front plate 21 and the front side backbone 27) is smaller than the mass of the back side member (the back plate 22 and the back side backbone 28).

The door body 20 has the above-described difference in mass, the difference in the shape of the front core, the number of reinforcement pieces, the difference in thickness, and other differences in the structure between the front side and the back side. and the natural frequency of the back side member.
According to the illustrated example, the natural frequency of the front side member is greater than the natural frequency of the back side member.

The hinge 30 supports one piece portion 31 and the other piece portion 32 so as to freely rotate around the shaft portion 33, and is sometimes called a hinge or the like. The illustrated example hinge 30 is a flag hinge of well-known construction.
This hinge 30 has one piece 31 attached to the door 20 and the other piece 32 attached to the vertical frame member 14 with the shaft 33 arranged between the door 20 and the vertical frame member 14 . (See Figure 2).
Other examples of the hinge 30 include flat hinges, pivot hinges, biaxial hinges, and the like.

In the figure, reference numeral 41 denotes a doorknob for opening and closing the door 20, reference numeral 42 denotes a thumb-turn for locking and unlocking the fully closed door 20, and reference numeral 43 denotes the doorknob 41 and the thumb-turn 42. It is a key mechanism that makes the latch bolt and dead bolt appear and disappear by the operation of .

The characteristic functions and effects of the door 20 (construction panel) and fitting device 1 configured as described above will be described in detail.
In the door 20, since the front side backbone 27 and the back side backbone 28 are separated in the panel thickness direction, the front side backbone 27 and the back side backbone 28 serve as a medium to prevent transmission of vibration and sound. can.
Moreover, due to the difference in shape, mass, thickness, etc. between the front side backbone 27 and the back side backbone 28, the natural frequency of the front side member including the front plate 21 and the front side backbone 27, and the back plate 22 and the back side backbone 28 are included. Since the natural frequency is different from that of the back side member, it is possible to prevent an increase in vibration and sound transmitted in the panel thickness direction due to resonance between the front side member and the back side member.
In addition, the cross section of the front plate 21 and the back plate 22 can be changed by setting the contact areas of the braces 25 and 26, the front side backbone 27 and the back side backbone 28 with respect to the front plate 21 and the back plate 22, and by setting the unique reinforcing piece shape. It is possible to suppress bending in an arcuate shape and to effectively prevent vibration accompanying the bending and resonance between the front plate 21 and the back plate 22 .

<Example of comparative experiment>
Next, the result of measuring the sound transmission loss under the same conditions for the fitting device 1 including the door 20 having the above configuration and the fitting device including the conventional door will be described. In this experiment, the sound source is placed on one side of the door and the microphone is placed on the other side.

FIG. 5 is a graph and a table showing the sound transmission loss for each ⅓ octave frequency of the fitting device 1 having the door 20 configured as described above.
FIG. 6 is a graph and a table showing the sound transmission loss for each ⅓ octave frequency of a fitting device provided with a conventional door 120, and the upper diagram is a cross-sectional view of the door. The door body 120 replaces the ribs 25 and 26 of the door body 20 with a rib 125 having a U-shaped cross section, and a pair of front side ribs 27 and back side ribs 28 having the same shape as the ribs 125. It is replaced by the bone 127, and both of these strength bones and middle bones connect the front plate and the back plate. In addition, although the above-described core material 29 is provided in the space between the front plate 21 and the back plate 22, its illustration is omitted.

From the results of this comparative experiment, the fitting device 1 having the door 20 had a larger sound transmission loss at all frequencies than the fitting device having the conventional door 120 . That is, it can be said that the fitting device 1 including the door 20 has higher sound insulation than the fitting device including the conventional door 120 .

<Modification>
The shape of the front side backbone 27 and the back side backbone 28 (FIG. 4(a)) of the above embodiment can be changed as appropriate.
For example, a door body 20' shown in FIG. 4B is obtained by replacing the front side backbone 27 of the door body 20 with a front side backbone 27'. The front rib 27' includes a contact piece 27a' that flatly contacts the inner surface of the front plate 21, and reinforcing pieces 27b' and 27c that protrude inward in the panel thickness direction from both ends of the contact piece 27a' in the width direction. ' and are integrally formed into an inverted hat shape in cross section, and the plate thickness is smaller than that of the backside central rib 28. - 特許庁
Each of the reinforcing pieces 27b' and 27c' is formed in an inverted L shape in which the tip side is bent outward in the panel width direction. One reinforcing piece 27b' and the other reinforcing piece 27c' have different protrusion amounts in the panel thickness direction.
According to the door 20' shown in FIG. 4(b), substantially the same effects as those of the door 20 can be obtained.

As another example, an elastic body may be provided between at least one of the front side backbone 27 and the back side backbone 28 and a portion facing the front side backbone 27 and the back side backbone 28 in the panel thickness direction. .
For example, the door 20″ shown in FIG. 4(c) has the structure of the door 20 described above, in which it Elastic members 51 and 52 are sandwiched between the reinforcing piece 28b of the bone 28 and the contact piece 27a facing the reinforcing piece 28b, respectively.
The elastic bodies 51 and 52 are made of synthetic rubber, elastomer resin, elastic foamed resin, or the like, and are provided continuously or partially in the vertical direction.
According to the door 20″, the elastic members 51 and 52 can suppress vibration of the front plate 21 and the back plate 22 in the thickness direction.

Further, according to the above-described embodiment, the reinforcing pieces 28b of the back side central rib 28 are displaced in the panel width direction with respect to the reinforcing pieces 27b and 27c of the front side central rib 27, thereby increasing the amount of projection of each reinforcing piece. However, as another example, the reinforcing piece of the front side central rib and the reinforcing piece of the back side central rib may be arranged at the same position in the panel width direction, and a gap may be formed between the opposing reinforcing pieces. good.

Further, according to the above embodiment, the construction panel according to the present invention is configured as the door body 20, but this construction panel can be applied to fittings such as sliding doors, folding doors, windows, shoji screens, partitions, shutter curtains, and the like. It is possible to

<Method for manufacturing construction panel>
Next, the characteristics of the manufacturing method of the construction panel (door body 20) having the above configuration will be described in detail.

In one example of this manufacturing method, there is a step of joining the front side backbone 27 to the inner surface of the front plate 21, arranging the back side backbone 28 close to the front side backbone 27 and separating it from the front side backbone 27, and placing the back side backbone 28 on the back side. and bonding to the plate 22 .
In these steps, the joining may be welding, but it is also possible to use an adhesive material (including double-sided tape and adhesives).
On the other hand, the upper, lower, left, and right ribs 23, 24, 25, and 26 are combined into a rectangular frame shape with an opening at the center and welded together to form an integral frame-shaped aggregate A1.
Then, the front plate 21 to which the front side backbone 27 is joined, the frame-shaped aggregate A1, and the back plate 22 to which the back side backbone 28 is joined are overlapped with an adhesive interposed therebetween, and are stacked from both sides in the thickness direction. They are integrated by being pressurized.

As another example of the manufacturing method, the upper, lower, left, and right ribs 23, 24, 25, and 26 are combined into a rectangular frame shape with an opening at the center by combination welding or the like to form an integral rectangular frame frame aggregate. An integrated aggregate unit A is configured by constructing the frame-shaped aggregate A1 and further joining the front-side intermediate rib 27 and the back-side intermediate rib 28 to the inner side of the frame of the frame-shaped aggregate A1.
After these steps, the front plate 21, the aggregate unit A, and the back plate 22 are overlaid with an adhesive interposed therebetween, and are joined by applying pressure from both sides in the panel thickness direction.

According to one example and another example of the manufacturing method, while holding the front side backbone 27 and the back side backbone 28 in a fixed state separated from each other, between the front plate 21 and the frame-shaped aggregate A1, between the frame-shaped aggregate A1 and the back side. The plates 22 can be sufficiently pressed against each other to be integrated.

It should be noted that, as a particularly preferred embodiment, if the adhesive used for the adhesion is a thermosetting adhesive and heating is also performed during the pressurization, the members can be bonded more firmly by thermal curing of the adhesive. can be done.

<Modification>
In the manufacturing method described above, there is a mode in which the front side backbone 27 and the back side backbone 28 are joined to the front plate 21 and the back side plate 22, respectively, or a mode in which both the front side backbone 27 and the back side backbone 28 are joined to the frame-shaped aggregate A1. However, as another example, it is also possible to join one of the front side backbone 27 and the back side backbone 28 to the front plate 21 or the back plate 22 and join the other to the frame-shaped aggregate A1. be.

In the above embodiment, the plurality of joints may be joined by any appropriate joining means, such as a mode in which all are welded, a mode in which all are adhered, or a mode in which some are welded and others are adhered. be.

Further, according to the above embodiment, a plurality of members are joined by welding or adhesion. It is also possible to join by fitting or the like.

Moreover, the present invention is not limited to the embodiments described above, and can be modified as appropriate without changing the gist of the present invention.

1: fitting device 10: frame body 20, 20', 20'': door body (construction panel)
21: front plate 22: back plate 25, 26: ribs 27, 27': front ribs 27b, 27c: reinforcing pieces 27b1: projecting piece 27b2: curved piece 28: back ribs 28b: reinforcing piece 28b1: projection Piece 28b2: Curved piece 51, 52: Elastic body A: Aggregate unit A1: Frame-shaped aggregate

Claims (16)

a front plate and a back plate spaced apart in the thickness direction of the panel;
a front mid-bone in contact with the inner surface of the front plate;
a back backbone in contact with the inner surface of the back plate,
A building panel, wherein the front side backbone and the back side backbone are separated in the panel thickness direction and have reinforcing pieces projecting inward in the panel thickness direction. 2. The building panel according to claim 1, wherein the natural frequency of the front side member including the front plate and the front side backbone is different from the natural frequency of the back side member including the back plate and the back side backbone. . 3. The building panel according to claim 1, wherein the reinforcement pieces of the front-side backbone and the reinforcement pieces of the back-side backbone are positioned at different positions in the panel surface direction. The building panel according to any one of claims 1 to 3, wherein the number of reinforcing pieces is different between the front side backbone and the back side backbone. The reinforcing piece of the front side backbone and the reinforcing piece of the back side backbone have a curved piece bent in the panel surface direction on the tip side of the projecting piece projecting inward in the panel thickness direction,
The building panel according to any one of claims 1 to 4, wherein the curved piece portion of the front side backbone and the curved piece portion of the back side backbone are different in length in the bending direction. . 6. The building panel according to any one of claims 1 to 5, wherein the front side backbone and the back side backbone are different in thickness. The building panel according to any one of claims 1 to 6, wherein the front side backbone and the back side backbone are asymmetrical in the panel thickness direction. The architecture according to any one of claims 1 to 7, wherein the mass of the front side member including the front plate and the front side backbone is different from the mass of the back side member including the back plate and the back side backbone. panel for. The building panel according to any one of claims 1 to 8, wherein the area of the portion where the front side backbone contacts the front plate is different from the area of the portion where the back side backbone contacts the back plate. . Between the peripheral inner surface of the top plate and the peripheral inner surface of the back plate, a rib is provided that contacts both inner surfaces, and the rib has an area of a portion that contacts the inner surface of the top plate. 10. The building panel according to any one of claims 1 to 9, wherein the area of the portion in contact with the inner surface of the back plate is different. 2. An elastic body is provided between at least one of the front side backbone and the back side backbone and a portion facing the panel thickness direction to the front side backbone and the back side backbone. 10. The building panel according to any one of items 1 to 10. A fitting device comprising the building panel according to any one of claims 1 to 11. The method according to any one of claims 1 to 11, characterized by including at least one of a step of joining the front side backbone to the front plate and a step of joining the back side backbone to the back plate. A method of manufacturing the described architectural panel. The front side core and the back side core are joined to the inside of the frame of the frame-shaped aggregate to form an integrated aggregate unit, and the front plate, the aggregate unit, and the back plate are overlapped and joined. A method for manufacturing a building panel according to any one of claims 1 to 11, characterized in that it comprises steps. 15. The method of manufacturing a building panel according to claim 13 or 14, wherein the joining includes joining by welding. 16. The method for manufacturing a building panel according to any one of claims 13 to 15, wherein the bonding includes bonding with an adhesive interposed.

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