JPH094125A - Panel material - Google Patents

Abstract

PURPOSE: To reduce the manufacturing costs by forming a panel material using a core of paper, thereby lessening the wood quantity in use, and simplifying the operation of provisionally holding the paper core at a frame. CONSTITUTION: A frame 10 is formed in such an arrangement that groove-shaped channels 11, 12 made of metal, in which one of the side plates is made wider, are provided in a frame form while their open faces are directed inward, and a paper core 20 accommodated inside the frame 10 is placed on the inner surfaces of the wide side plates 11a, 12a of the channels 11, 12 in the condition that one surface of the core periphery is contacted with the side plate inner surfaces. The periphery of the core 20 is deformed by crushing it with a surface plate 32 furnished on the other surface of the core 20 and the wide side plates 11a, 12a, the core surfaces except peripheral zones are made flush with the two surfaces of the frame 10, and the surface plates 31, 32 are adhered to both surfaces of the frame 10 and core 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a panel material using a paper core as a core material.

[0002]

2. Description of the Related Art Conventionally, a panel material using a paper core as a core material accommodates a paper core having the same thickness as the frame in a space inside a wooden frame and sandwiching the frame and the paper core. It has a structure in which a pair of front and back surface plates are provided on both sides.

In the above-mentioned wooden frame, a plurality of square bar members made of wood are arranged in a frame shape according to the outer shape of the panel member, and the abutting portions of the ends of the square bar members are connected and fixed by staples. It is assembled.

The panel material accommodates a paper core in a space inside the frame, and the paper core is stapled on the inner peripheral surface of each square bar material of the frame at appropriate intervals at its peripheral portion. It is manufactured by fixing and temporarily holding it on a frame, and then adhering surface plates to both surfaces of the frame and the paper core in that state.

This panel material, which uses a paper core as a core material, is lightweight and inexpensive, and is widely used as a partition panel in a room, a blind panel on a veranda, a top plate of a table, and the like.

[0006]

By the way, in the manufacture of the above panel material, the paper core housed in the space inside the frame is temporarily held by the frame so as not to come off from the frame, and the surface plate is Although the conventional panel material is made of wood, the conventional panel material is made of wood. Therefore, in order to temporarily hold the paper core in the frame, as described above, the peripheral edge of the paper core is appropriately spaced. Since there is no choice but to fix it to the inner peripheral surface of the square bar material by stipple, and therefore the work of fixing the paper core is troublesome and time-consuming, there is a problem that the assembly efficiency of the panel material is poor and the manufacturing cost becomes high. .

[0007] Further, recently, from the viewpoint of nature protection, the cutting of trees has been restricted, and the price of wood has been increasing accordingly. Since the timber must be cut from plank timber, the rising price of timber has also been a factor in raising the manufacturing cost of panel materials.

This invention reduces the amount of wood used as a panel material using a paper core as a core material, and
It is an object of the present invention to provide a product that can simplify the work of temporarily holding the paper core housed in the space inside the frame on the frame and reduce the manufacturing cost.

[0009]

The panel material of the present invention comprises:
The frame is constructed by arranging metal channel-shaped channel members, one side plate of which is a wide side plate whose side edge projects more than the side edge of the other side plate, with its open surface facing inward. , A paper core having the same thickness as that of the frame accommodated in the inner space of the frame is placed on the inner surface of the wide side plate by contacting one surface of the peripheral edge portion with the inner surface of the wide side plate of the channel material. Together with this, the peripheral portion of the paper core is crushed and deformed by the surface plate provided on the other surface side of the paper core of the pair of surface plates and the wide side plate of the channel material, and the peripheral portion of the paper core. Both sides of the part except for are flush with both sides of the frame,
The pair of surface plates are adhered to both surfaces of the frame and the paper core, respectively.

In the panel material of the present invention, a cut is made in the peripheral portion of the paper core over the entire length of the portion which is crushed and deformed by at least the surface plate and the wide side plate of the channel material at the end of each strip paper. It is desirable to provide the formed notch.

[0011]

According to the panel material of the present invention, since the frame is made of the channel material made of metal, the amount of wood used is smaller than that of the conventional panel material using the wooden frame. can do.

Further, since the frame is formed by the channel-shaped channel material in which one side plate is a wide side plate whose side edge projects more than the side edge of the other side plate, it is housed in the space inside the frame. The paper core can be temporarily held in the frame only by contacting one surface of the peripheral edge portion with the inner surface of the wide side plate of the channel material and placing the paper core on the inner surface of the wide side plate. The work of temporarily holding the sheet is also simplified.

In the panel material of the present invention, the peripheral portion of the paper core is crushed and deformed by the surface plate provided on the other surface side of the paper core of the pair of surface plates and the wide side plate of the channel material. As a result, both sides of the paper core except the peripheral portion are flush with the both sides of the frame, so that a pair of front and back surface plates provided on both sides of the frame and the paper core are placed in a flat state. Can be adhered to both sides of the frame and the paper core.

Further, in the panel material of the present invention, a cut is made in the peripheral portion of the paper core over the entire length of a portion which is crushed and deformed by at least the surface plate and the wide side plate of the channel material at the end portion of each strip-shaped paper. By providing the cut portion formed as described above, the peripheral portion of the paper core can be easily crushed and deformed.

When the peripheral portion of the paper core is crushed and deformed, the restoring force acts to spread the surface plate and the wide side plate of the channel material from the inside. However, the cut portion is formed on the peripheral portion of the paper core. If provided, since the restoring force can be reduced, even if the surface plate and the channel material are thin, the wide side plates of the surface plate and the channel material are not affected by the restoring force of the peripheral portion of the paper core. It does not spread and deform.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 3 and 4 are a front view and an exploded perspective view of the panel material of this embodiment, and FIG. 8 is an enlarged view of a portion VIII of FIG. 3. The panel material of this embodiment is a channel material 11 made of metal. , 12 in the form of a rectangular frame, a paper core 20 housed in the space inside the frame 10, and a pair of front and back surfaces provided on both sides of the frame 10 and the paper core 20. It is composed of surface plates 31, 32.

First, the frame 10 will be described. FIG. 5 is an exploded perspective view of the frame 10. The frame 10 includes two metal channel members 11 and 12 in the vertical and horizontal directions, and these channel members 11. , 12 and four corner members 13 for connecting the end portions of each other.

The above-mentioned channel material 11 and 12 is a modified channel material, in which one side plate of both side plates is wide side plates 11a and 12a whose side edges project beyond the side edges of the other side plate. In this embodiment, as the channel members 11 and 12, press-formed products made of thin steel plates that are lightweight and inexpensive are used. The width of each of the bottom plates and the narrow side plates of the channel members 11 and 12 is about 25 mm, and the width of the wide side plates 11a and 12a is about 35 mm.
The thickness of the bottom plate and both side plates is about 0.5 mm.

Each of the four corner members 13 is made of a material into which nails can be driven, and the channel members 11 and
The corner member 13 is made of a plate material having a thickness that fits closely into the inside 12 with a very small fitting margin.
Is in the shape of a right triangle whose vertical and horizontal sides have a length of about 110 mm.

In this embodiment, the corner member 13 is made of a thick plywood or a laminated plate in which a plurality of thin plates are laminated with their grain directions aligned.

FIG. 6 is an enlarged perspective view showing a connecting portion of the vertical and horizontal channel members 11 and 12 of the frame 10, and this frame 10 has two channel-shaped channel members 11 and 12 each having two vertical and horizontal channels. The open surfaces (recessed surfaces) of all the channel materials are arranged in a rectangular frame shape with the open surfaces (recessed surfaces) facing inward, and the corner members 13 are provided at the abutting portions of the ends of the channel materials 11 and 12 in the vertical and horizontal directions. , 12 are respectively fitted and arranged at the ends, and the respective channel members 11, 12 are assembled by fixing a peg 14 from the outer surface thereof and fixing them to the corner member 13.

This peg 14 is made up of the channel members 11, 1
From the outer surface of both side surfaces of 2, that is, the surface to which the surface plates 31 and 32 are adhered, the driving positions on the respective surfaces are displaced from each other.

FIG. 7 is an enlarged cross-sectional view of the nailed portion between the corner member 13 and the channel members 11 and 12. In this embodiment, the surface plate bonding surface of the channel members 11 and 12 is flat without any protrusion. In order to make it a surface, a peg having an inverted conical head is used as the peg 14,
The peg 14 is driven by the head so that the nail driving portion of the channel members 11 and 12 is recessed so as to bite into the corner member 13, and the peg 14 is inserted into the concave portion of the surface of the channel member 11 and 12. The head is completely buried.

Further, in this embodiment, as shown in FIG. 7, the tip end portion of the channel member fitting portion of the corner member 13 has a shape in which the front and back surfaces are slightly tapered, and the corner member 13 is formed. , Channel material 11, 12
It is designed to be able to be easily fitted to the channel material without pushing it wide.

Next, the paper core 20 accommodated in the space inside the frame 10 will be described. The paper core 20 has the same thickness as the thickness of the frame 10 (width of the bottom surfaces of the channel members 11 and 12). In this embodiment, a paper core having a mesh shape as shown in FIG. 8 is used.

The paper core 20 includes a flat strip 21 and a corrugated strip 22 having the same width as the thickness of the frame 10, and the corrugated portions of the corrugated strip 22 are flat strips. 21. The paper core 20 is adhered to a plurality of sheets 21 and alternately laminated, and the paper core 20 has its peripheral surface conforming to the shape of the frame 10 and has the peripheral surface of each channel member 1 of the frame 10.
1, 12 which are closely opposed to the side edges of the narrow side plates, and whose peripheral portions are the wide side plates 11a of the channel members 11, 12.
It is cut to a size overlapping the protruding edge portion of 12a, and a portion corresponding to the corner member 13 is cut out.

The pair of front and back surface plates 31 and 32 are, for example, thin steel plates having a surface thickness of about 0.3 mm with decorative printing applied, and these surface plates 31 and 32 are the frame 10 and the frame 10. It is cut according to the outer shape of.

The panel material is constructed by accommodating the paper core 20 in the space inside the frame 10 and adhering a pair of front and back surface plates 31, 32 to both surfaces of the frame 10 and the paper core 20. There is.

That is, FIG. 1 is an enlarged cross-sectional view of one side portion of the panel material, and FIG. 2 is an exploded view of the same portion. The panel material includes a paper core 20 housed in a space inside the frame 10. One surface of the peripheral edge portion is brought into contact with the inner surfaces of the wide side plates 11a, 12a of the channel members 11, 12 of the frame 10 and placed on the inner surfaces of the wide side plates 11a, 12a so that the frame 10 is temporarily held. , The peripheral portion of the paper core 20 is a pair of surface plates 31,3
Surface plate 32 provided on the other surface side of paper core 20 of 2 and wide side plate 11 of each of the channel members 11 and 12
a and 12a to crush and deform so that both sides of the paper core 20 excluding the peripheral portion are flush with both sides of the frame 10 (outer surfaces of both side plates of the channel members 11 and 12). The pair of surface plates 31 and 32 are adhered to both surfaces of the core 20, respectively.

Further, in this embodiment, at the peripheral portion of the paper core 20, the widthwise central portion of the end portions of the strip-shaped papers 21 and 22 constituting the paper core 20 is formed from the strip-shaped paper edge to the surface plate 32. And a wide side plate of the channel material, a notch 23 formed by making a notch over a length slightly larger than a portion that is crushed and deformed is provided, and the peripheral edge of the paper core 20, that is, the end of each strip 21 or 22 is provided. Is deformed by crushing the two tongue pieces separated by the notch 23 toward the notch 23 side.

The panel material of this embodiment is the frame 1 described above.
0 in a state in which the wide side plates 11a and 12a of the both side plates of the respective channel members 11 and 12 are down (the wide side plates 11 and 12).
a, 12a are placed horizontally with the inner surfaces facing upward, and the paper core 20 is housed in the space inside the frame 10 and the paper core 20 is inserted into the frame 1 as described above.
0, and then the front and back surface plates 31, 32 are
A peripheral edge of the paper core 20 is obtained by applying an adhesive to the entire inner surface of the paper core 20 and arranging the frame 10 and the paper core 20 so as to sandwich the frame 10 and the paper core 20 from each other and pressing the surface plates 31 and 32 from the outer surfaces thereof. The portion is crushed and deformed by the wide side plates 11a and 12a of the channel members 11 and 12 which are in contact with one surface thereof and the surface plate 32 arranged on the other surface side of the paper core 20, and the paper core 2
When the adhesive is cured in a state where both sides of the portion other than the peripheral portion of 0 are flush with both sides of the frame 10, the surface plates 31 and 32 are attached to the channel members 1 of the frame 10.
It is manufactured by a method of adhering to the front and back surfaces of 1a and 11b and the front and back surfaces of the paper core 20.

In this case, in this embodiment, the peripheral edge of the paper core 20 is provided with the notch 23 having a length slightly larger than the portion to be crushed and deformed. Therefore, the peripheral edge of the paper core 20 is easily crushed. It can be transformed.

When the peripheral portion of the paper core 20 is crushed and deformed, the restoring force acts so as to spread the surface plate 32 and the wide side plates 11a, 12a of the channel members 11, 12 from the inside. 20
Since the restoring force can be reduced by providing the cut portion 23 at the peripheral edge portion of the, even if the surface plate 32 and the channel members 11 and 12 are thin,
Wide side plate 1 of surface plate 32 and channel members 11 and 12
1a and 12a do not spread and deform due to the restoring force of the peripheral portion of the paper core 20.

This panel material is mainly used as a partition panel in a room, a blind panel of a veranda, etc. For example, it is fitted in a panel holding frame constructed by combining aluminum shape members and the like. Is installed.

According to the above panel material, its frame 10
Since the grooved channel materials 11 and 12 made of metal are used, the amount of wood used for manufacturing the frame can be reduced as compared with the conventional panel material using the wooden frame. , The channel material 11, 1
Since 2 can be obtained at a lower cost than wood having the same thickness and length, the material cost of the frame 10 can be reduced.

In the panel material of this embodiment, the end portions of the channel materials 11 and 12 constituting the frame 10 are
Since the corner members 13 arranged at the abutting portions of the channel members 11 and 12 are fixed by the pegs 14, the corner members 13 must be made of a material such as wood that can be driven into nails. Corner member 1
Since 3 is arranged at the abutting portion between the ends of the channel members 11 and 12, this corner member 13 may be small, and therefore the corner member 13
Even if wood is used, the amount of wood required for manufacturing the frame 10 can be small.

In the above panel material, the frame 10 is composed of channel-shaped channel members 11 and 12 in which one side plate is wide side plates 11a and 12a whose side edges project more than the side edges of the other side plate. Therefore, the paper core 20 housed in the space inside the frame 10 is provided with the wide side plates 11a of the channel members 11 and 12 on one surface of the peripheral portion thereof.
The wide side plates 11a and 12a are brought into contact with the inner surface of 12a.
It is possible to temporarily hold the paper core 20 on the frame 10 simply by placing it on the inner surface of the frame 10. Therefore, the work of temporarily holding the paper core 20 on the frame 10 is also simplified. Along with the reduction, the manufacturing cost of the panel material can be significantly reduced.

Moreover, in the panel material of the above-described embodiment, the frame 10 of the panel material is used as the channel materials 11 and 12 of the channel shape.
In this frame 10, a plurality of channel-shaped channel members 11 and 12 are arranged in a frame shape, and the corner member 13 is provided at the abutting portion between the ends of the channel members 11 and 12. The channel members 11 and 1 are arranged so as to be fitted into the ends of the vertical and horizontal channel members 11 and 12, respectively.
2 can be easily assembled by driving a peg 14 from the outer surface and fixing it to the corner member 14.

In the above panel material, the paper core 2
By crushing and deforming the peripheral portion of 0 with the surface plate 32 provided on the other surface side of the paper core 20 of the pair of surface plates 31 and 32 and the wide side plates 11a and 12a of the channel members 11 and 12, Since both sides of the paper core 20 except for the peripheral portion are flush with the both sides of the frame 10, a pair of front and back surface plates 31, 32 provided on the both sides of the frame 10 and the paper core 20 are provided.
Can be adhered to both sides of the frame and the paper core in a flat state.

Further, the conventional panel material has a problem that the frame is easily rotted because the frame is made of wood. Especially, a panel used for blinds such as a balcony panel has a very short service life. However, in the panel material of the above-mentioned embodiment, since the frame 10 is composed of the channel materials 11 and 12 made of metal, the corrosion resistance of the frame 10 is high, and therefore, even if the frame 10 is used while being exposed to rain. The service life is sufficient.

Furthermore, in the conventional panel material, the square bar material constituting the frame expands due to moisture to increase its thickness, and a change in the thickness causes a step between the front and back surfaces of the frame and the front and back surfaces of the paper core. Therefore, if the surface plate is an extremely thin steel plate with a thickness of about 0.3 mm, the surface plate bonded to both the frame and the paper core is bent and deformed at the step portion, and the outer periphery of this surface plate is Although the parts appear as if they were protruding in the shape of a frame, and the appearance quality of the panel material is impaired, the thickness of the frame 10 (width of the channel materials 11 and 12) is affected by moisture according to the panel material of the above-described embodiment. It doesn't change.

In the above embodiment, the corner member 13 is used.
Has a thickness that allows the channel members 11 and 12 to be fitted in the channel members 11 and 12 with a very small fitting allowance.
When the amount of change in thickness due to the humidity exceeds the fitting allowance, the channel members 11 and 12 are spread out from the inside, but the amount of expansion is indistinguishable from the outside, and the channel material 11 and The part 12 is only partially expanded at the place where the corner member 13 is fitted and the vicinity thereof, and the other part is not expanded and the original shape is maintained.

Moreover, in the above embodiment, the paper core 2
Since the cutout portion 23 is provided in the peripheral edge portion of 0, the front surface plate 32 and the wide side plates 11a of the channel members 11 and 12,
12a does not spread and deform due to the restoring force of the peripheral portion of the paper core 20.

For this reason, the panel material is affected by the moisture and the restoring force of the peripheral portion of the paper core 20.
0 thickness does not change and therefore the face plate 3
Even if the steel plates 1 and 32 are extremely thin, the shape of the frame 10 does not appear on the outer peripheral portion thereof, so that the appearance quality can be maintained for a long period of time.

In the above embodiment, the paper core 20
The notch 23 provided in the peripheral portion of the is linearly provided as shown in FIG. 2, and the notch 23 has, for example, a shape that widens in a V shape toward the edges of the strips 21 and 22. You may form.

Further, in the above embodiment, the paper core 20
The notch 23 provided at the peripheral edge of the is provided over a length slightly larger than the portion to be crushed and deformed,
The notch 23 may be provided at least over the entire length of the portion that is crushed and deformed.

However, the notch 23 is not always necessary, and the channel members 11 and 12 constituting the frame 10 and the surface plate 32 provided on the other surface side of the paper core 20 have sufficient strength. In the case, or even when the channel members 11 and 12 are thin, the front and back surface slopes 31 and 32 have sufficient strength,
It is not always necessary to provide the cut portion 23 on the peripheral portion of the paper core 20.

9 and 10 are enlarged cross-sectional views of one side portion of a panel material showing another embodiment of the present invention, and FIG. 10 is an exploded view of the same portion. , 3
2 is a thick plate having sufficient strength against bending, the peripheral edge of the paper core 20 is not provided with the notch 23, and the peripheral edge of the paper core 20, that is, each strip 2
The end portions of 1 and 22 are bent and crushed and deformed in a substantially V shape when viewed from the edge thereof.

In this embodiment, the restoring force of the peripheral portion of the paper core 20 is applied to the wide side plates 11a and 12a of the channel members 11 and 12 of the frame 10 and the surface plate 32 provided on the other side of the paper core 20. However, since the surface plate 32 has a sufficient strength against bending, the surface plate 32 is not deformed by the restoring force of the peripheral portion of the paper core 20, and the channel members 11, 12 are not deformed. Since the surface plate 31 having sufficient strength is bonded to the outer surfaces of the wide side plates 11a and 12a of the above, the surface plate 31 is bonded to the entire outer surfaces of the wide side plates 11a and 12a with sufficient adhesive force. Therefore, even if the channel members 11 and 12 are thin, the wide side plates 11a and 12a are deformed by the restoring force of the peripheral edge of the paper core 20. No.

Further, in the panel material of the above-mentioned embodiment, the frame 10 is provided with the channel-shaped channel materials 11 each having two vertical and horizontal channels.
This frame is composed of 12 frames.
May be formed of a channel material that is bent according to the outer shape of the panel material.

That is, FIG. 11 is an exploded perspective view showing a modified example of the frame 10. The frame 10 includes a channel material 15 bent into a shape corresponding to one side and an upper side of the panel material. A channel-shaped channel material 16 bent into a shape corresponding to the other side and the lower side of the panel material is arranged in a frame shape, and the above-mentioned corner member 13 is provided at the abutting portion of the ends of the channel materials 15, 16. Are respectively fitted and arranged at the ends of the vertical and horizontal channel members 15 and 16 which are abutted against each other, and each channel member 15 and 16 is driven by a peg from the outer surface thereof in the same manner as in the above embodiment. It is fixed to the corner member 13.

The channel members 15 and 16 are groove-shaped channel members each having a length extending from the vertical side portion to the horizontal side portion of the frame 10. Both side plates of the channel material are formed on the vertical side portion and the horizontal side portion. 90 ° at the location corresponding to the boundary with
Alternatively, it is formed by notching in a V shape over the entire width of the side plate at an opening angle slightly larger than that, and bending the bottom plate of the channel material at that location.

In addition, in this embodiment, in order to reinforce the bent portions of the channel members 15 and 16, the corner member 13 is also fitted in the bent portions, and the channel members 15 and 16 are
The vertical and horizontal sides of 16 are nailed to the corner member 13.

In addition to the embodiment shown in FIG. 11, as an embodiment in the case of constructing the frame by the grooved channel material bent according to the outer shape of the panel material, for example, three sides of a rectangular frame are used. An embodiment in which a channel-shaped channel material bent in a corresponding shape and a linear channel-shaped channel material corresponding to the other side are fixed by nailing the ends of the channel material to the corner member 13 to form a frame. For example, one long groove-shaped channel material is bent into a rectangular frame shape, and both ends thereof are nailed and fixed to the corner member 13 to form a frame.

Further, in the above embodiment, the ends of the channel members 11, 12 or 15, 16 constituting the frame 10 are nailed and connected to the corner member 13, but the channel members 11, 12 or The ends of 15 and 16 may be connected by welding.

In the above embodiment, the channel material 11, 12 or 15, 16 forming the frame 10 has the cross-sectional shape as shown in the figure. , 12 or 15, 16
The cross section may have a cross-sectional shape in which projecting edges having an appropriate height are formed on both sides of the bottom surface (the surface serving as the outer peripheral surface of the frame 10).

If the frame 10 is constructed by using the channel material having such a cross-sectional shape, a groove corresponding to the height of the protruding edge of the channel material is formed on the outer peripheral surface of the panel material. Even when rainwater enters through the gap between the panel material and its holding frame as in the case of being used as a blind panel, the water can be drained well by using the groove on the outer peripheral surface of the panel material as a water conduit.

Further, in the above embodiment, the paper core 20
8 is used, the paper core 20 may have any mesh shape as long as its outer shape and mesh shape do not change when left standing. Good.

Furthermore, the panel material of the above-mentioned embodiment uses thin steel plates for the front and back surface plates 31, 32,
It is mainly used as a partition panel in a room or a blind panel of a veranda, but the present invention is also applicable to panel materials used for table tops, shelves, doors, etc. As the face plates 31 and 32, a decorative plywood, a metal plate, a plastic plate, or the like may be used depending on the application of the panel material.

The shape of the panel material is not limited to the rectangular shape, but may be any polygonal shape. Further, since the groove-shaped channel material made of metal can be curved in an arc shape, the panel material The shape can be circular or elliptical.

[0061]

According to the panel material of the present invention, since the frame is composed of the groove-shaped channel material made of metal, the amount of wood used can be increased as compared with the conventional panel material using the wooden frame. It is possible to reduce the manufacturing cost by simplifying the work of temporarily holding the paper core housed in the space inside the frame on the frame while reducing the number of times.

In the panel material of the present invention, the peripheral edge portion of the paper core is crushed and deformed by the surface plate provided on the other surface side of the paper core of the pair of surface plates and the wide side plate of the channel material. As a result, both sides of the paper core except the peripheral portion are flush with the both sides of the frame, so that a pair of front and back surface plates provided on both sides of the frame and the paper core are placed in a flat state. Can be adhered to both sides of the frame and the paper core.

Further, in the panel material of the present invention, a cut is made in the peripheral edge portion of the paper core over the entire length of the portion which is crushed and deformed by at least the surface plate and the wide side plate of the channel material at the end of each strip-shaped paper. By providing the cut portion formed as described above, the peripheral portion of the paper core can be easily crushed and deformed.

Further, when the peripheral portion of the paper core is crushed and deformed, the restoring force acts so as to spread the surface plate and the wide side plate of the channel material from the inside. However, the cut portion is formed in the peripheral portion of the paper core. If provided, since the restoring force can be reduced, even if the surface plate and the channel material are thin, the wide side plates of the surface plate and the channel material are not affected by the restoring force of the peripheral portion of the paper core. It does not spread and deform.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view of one side portion of a panel material showing an embodiment of the present invention.

FIG. 2 is an exploded view of the same portion.

FIG. 3 is a front view of a panel material.

FIG. 4 is an exploded perspective view of a panel material.

FIG. 5 is an exploded perspective view of a frame.

FIG. 6 is an enlarged perspective view of a channel material connecting portion of the frame.

FIG. 7 is an enlarged cross-sectional view of a nailed portion between a corner member and a channel material.

FIG. 8 is an enlarged view of part VIII in FIG.

FIG. 9 is an enlarged cross-sectional view of one side portion of a panel material showing another embodiment of the present invention.

FIG. 10 is an exploded view of the same portion.

FIG. 11 is an exploded perspective view showing a modified example of the frame.

[Explanation of symbols]

 10 ... Frame 11, 12, 15, 16 ... Channel material 11a, 12a, 15a, 16a ... Wide side plate 20 ... Paper core 21,22 ... Strip paper 23 ... Notch part 31, 32 ... Surface plate

Claims (2)

[Claims] 1. A panel material in which a paper core having the same thickness as that of the frame is housed in a space inside the frame, and a pair of front and back surface plates are provided on both sides of the frame and the paper core. The frame is configured by arranging metal channel-shaped channel members, one side plate of which is a wide side plate whose side edge projects more than the side edge of the other side plate, with its open surface facing inward. Then, the paper core housed in the space inside the frame is placed on the inner surface of the wide side plate with one surface of the peripheral edge portion abutting against the inner surface of the wide side plate of the channel material. The peripheral portion of the paper core is crushed and deformed by the surface plate provided on the other surface side of the paper core of the pair of surface plates and the wide side plate of the channel material, and the peripheral portion of the paper core is excluded. And a pair of surface plates are adhered to both sides of the frame and the paper core, respectively. 2. The paper core is provided at its peripheral portion with a cut portion formed by making a cut along the entire length of a portion which is crushed and deformed by at least the surface plate and the wide side plate of the channel material at the end of each strip-shaped paper. The panel material according to claim 1, wherein the panel material is provided.