JP2003127264A - Structure for preventing laminated panel from being released - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent release of a laminated panel due to the internal residual air of the laminated panel, by securing an air byway during bonding of the panels, with regard to a structure for preventing the laminated panel which is obtained by bonding and stacking a plurality of panels from being released. SOLUTION: In the laminated panel 1 formed of a skin material 3 joined to a base material 2 by a contact-bonding process through an adhesive, a first groove part 8 with a specified width and a specified depth, is formed, at a specified interval, on the surface of the base material 2, to which an adhesive is applied. In addition, second groove parts 9 are formed in such a way that their width and depth are larger than those of the first groove part 8 and besides, at a wider interval than that of the first groove part 8 in the short side direction of the surface of the base material 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a peeling prevention structure for a laminated panel in which a plurality of panels are adhered and laminated, and in particular, a laminated panel suitable for use in removing air remaining between the panels when adhering the panels. Of the peeling prevention structure.

[0002]

2. Description of the Related Art FIG. 2 is a schematic exploded perspective view showing a laminated panel, FIG. 3 is an enlarged sectional view in the long side direction of a conventional laminated panel, and FIGS. 4 (a) and 4 (b) are laminated panel manufacturing apparatuses. It is a schematic cross-sectional view showing. 2. Description of the Related Art Conventionally, as a panel that has been used in a refrigerating vehicle or a cold storage vehicle and requires heat insulation, as shown in FIG. 2, a high-rigidity skin material (for example, aluminum board) on both sides of a heat insulating material (for example, styrene board or urethane board) 2 is used. There is known a laminated panel 1 in which (3, FRP board, etc.) 3 are adhered with an adhesive.

As shown in FIG. 3, the heat insulating material 2 has a groove 8 formed in advance in the direction of the short side of the surface to which the skin material 3 is bonded. The groove 8 is formed with a width and a depth of about 1.0 mm and an interval of 3.0 to 10 mm. As a result, when pressure is applied after the heat insulating material 2 and the skin material 3 are bonded together via an adhesive, the groove 8 serves as an escape path for the air, and the air remains between the heat insulating material 2 and the skin material 3. It's getting harder.

As a conventional method for manufacturing such a laminated panel, for example, a hot pressing method or a vacuuming method is generally used.
In the hot press method, after the heat insulating material 2 and the skin material 3 are bonded to each other with an adhesive, a predetermined pressure is applied to the laminated panel 1 by hydraulic pressure while heating and the heat insulating material 2 and the skin material 3 are brought into close contact with each other. It is designed to let you.

On the other hand, in the vacuum drawing method, as in the hot pressing method, the surface material 3 is attached to the surface of the heat insulating material 2 with an adhesive to form one laminated panel 1 and then as shown in FIG. Then, the laminated panel 1 is placed on a plane, and the laminated panel 1
An elastic sheet (hereinafter, simply referred to as a sheet) 4 is covered on the upper part of the above to evacuate the inside by a vacuum pump or the like. Thereby, the air existing between the heat insulating material 2 and the skin material 3 is sucked. Further, since the sheet 4 acts in the direction in which pressure is applied to the laminated panel 1, the heat insulating material 2 and the skin material 3 are brought into close contact with each other.

Further, as shown in FIG. 4 (b), the vacuum chamber 5
A plurality of laminated panels 1 are placed inside the vacuum tank 5, a sheet 4 is covered so as to cover the peripheral edge of the opening of the vacuum tank 5, and the inside of the vacuum tank 5 is evacuated. A method is also known in which air existing between them is removed to bring them into close contact. Reference numeral 6 shown in FIG. 4 (b) is a padding, and by providing such padding 6, the gap between the laminated panel 1 and the vacuum chamber 5 is reduced, and the laminated panel 1 and the padding are The extra tensile force applied to the sheet 4 that comes into contact with the sheet 6 is reduced.

[0007]

By the way, in the heat insulating material 2 used for the conventional laminated panel 1, since the cross-sectional area of the groove 8 formed on the surface is small, when the groove 8 is filled with the adhesive, There is no escape path for air, and there is a possibility that the air existing between the heat insulating material 2 and the skin material 3 cannot be sufficiently removed when the laminated panel 1 is bonded.

In particular, when the laminated panel 1 is used in a large refrigerated vehicle, the maximum size of one laminated panel 1 is 2.5M ×
Since the size is about 10 M, it is difficult to reliably remove air. Further, if air remains between the heat insulating material 2 and the skin material 3, an expansion phenomenon of the air may occur in a high temperature environment such as summer, and the surface of the skin material 3 may swell. As a result, the heat insulating material 2 and the skin material 3 are separated from each other in the region where the residual air is present, so that it becomes difficult to maintain a high heat insulating effect, and the product cannot be commercialized and the production efficiency is reduced.

The present invention has been devised in view of the above problems, and it is possible to secure an air escape passage at the time of adhering panels and prevent peeling of the laminated panel due to residual air inside the laminated panel. An object is to provide a peeling prevention structure for a laminated panel.

[0010]

Therefore, in the laminated panel peeling prevention structure of the present invention according to claim 1, in a laminated panel formed by pressure-bonding a skin material to a base material via an adhesive, The first groove portion has a predetermined width and a predetermined depth and is formed at a predetermined interval on the surface of the base material to which the adhesive is applied. Further, the second groove portion is formed to be wider than the first groove portion or deeper than the depth of the first groove portion, and in the short side direction of the substrate surface at an interval larger than the predetermined interval. It is extended and formed.

Further, it is preferable that the second groove portion is formed larger than the cross-sectional area of the first groove portion. This allows
It is possible to reduce the residual air inside the laminated panel by ensuring a passageway for the air when adhering the panels. According to a second aspect of the present invention, in the laminated panel peeling prevention structure of the first aspect, the base material is a heat insulating material used in a refrigerating vehicle or a cold keeping vehicle, and the skin material is an aluminum plate or a fiber. It is a reinforced resin.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a laminated panel to which a peeling prevention structure for a laminated panel of the present embodiment is applied, and is an enlarged cross-sectional view showing a main part thereof. Note that, in FIG. 1, the same parts and the like as those of the above-described conventional laminated panel are denoted by the same reference numerals.

The laminated panel to which the peeling prevention structure of the laminated panel of the present embodiment is applied is, for example, applied to a refrigerating vehicle or a cold keeping vehicle. As shown in FIG. 1, the heat insulating material 2 and the skin material 3 are used. Composed of and. The skin material 3 is formed of, for example, a highly rigid aluminum plate or fiber reinforced resin (FRP). The heat insulating material 2 is formed of, for example, a porous urethane board or styrene board.

The heat insulating material 2 is formed to have a first groove portion 8 and a second groove portion 9. The first groove 8 has a predetermined width and a predetermined depth, and the heat insulating material 2 to which an adhesive is applied
Are formed on both surfaces with a predetermined interval. That is, the first
The groove portion 8 is formed on the surface of the heat insulating material 2 with a width and depth of about 1.0 mm and an interval of 3.0 to 10 mm, like the groove formed on the heat insulating material 2 of the conventional laminated panel. There is.

As a result, the first groove portion 8 serves as an escape passage for the air existing between the heat insulating material 2 and the skin material 3 when the panels are bonded to escape to the outside of the panel. In addition, the second groove portion 9 is wider than the width of the first groove portion 8 and deeper than the depth of the first groove portion 8 and at short intervals on both sides of the heat insulating material 2 at intervals larger than a predetermined interval. It is formed so as to extend in the direction. That is, the second groove portion 9 is formed so as to have a larger cross-sectional area than that of the first groove portion 8.

The second groove 9 has, for example, a width of 1.5.
~ 2.0 mm, depth 2.0 ~ 3.0 mm about 2
It is formed at intervals of 00 mm. As a result, at the time of panel bonding, the air that is not properly removed outside the panel in the first groove portion 8 (that is, remains between the heat insulating material 2 and the skin material 3) is larger than the cross-sectional area of the first groove portion 8. It is pushed into the second groove 9 having a cross-sectional area and is surely guided to the outside of the panel via the second groove 9.

Further, since the second groove portion 9 is formed in the short side direction on both surfaces of the heat insulating material 2, it is possible to guide the residual air to the outside of the panel earlier than it is formed in the long side direction. It has become. The laminated panel to which the peeling prevention structure of the laminated panel as one embodiment of the present invention is applied is configured as described above. Therefore, for example, when using a vacuuming type laminated panel manufacturing apparatus, the laminated panel 1 is It is manufactured by the following procedure.

That is, as shown in FIG. 4B, an adhesive is applied between the heat insulating material 2 and the skin material 3, and the heat insulating material 2 and the skin material 3 are polymerized in the vacuum chamber 5. Laminated panel 1
After placing, the peripheral edge portion 15 of the opening of the vacuum chamber 5 is covered with a sheet (for example, an elastic rubber sheet) 4. Then, the inside of the vacuum chamber 5 is suctioned by a vacuum pump (not shown) to make a vacuum,
The air inside the laminated panel 1 is sucked out.

At this time, the second heat insulating material 2 is formed on both surfaces.
The groove portion 9 ensures the air escape route, which was difficult with the first groove portion 8 alone. Further, since the second groove portion 9 is formed so as to extend in the short side direction on both surfaces of the heat insulating material 2, it is possible to guide the air to the outside of the panel more quickly than when the groove is formed in the long side direction. it can.

Thus, the second groove 9 is formed on both surfaces of the heat insulating material 2.
By providing the residual air inside the panel,
It is possible to guide the outside of the panel more reliably via the.
Thereby, the air remaining between the heat insulating material 2 and the skin material 3 can be reduced, and peeling of the laminated panel due to the expansion phenomenon of air in the summer or the like can be prevented.
That is, it is possible to exert a high heat insulation effect,
The production efficiency can be improved.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, in the present embodiment, the first groove portion 8 is formed in parallel with the second groove portion 9 (that is, in the short side direction of the panel), but the first groove portion 8 may be orthogonal to the second groove portion 9. (That is, in the long side direction of the panel). Further, the first groove portions 8 may be formed in a grid pattern.

[0022]

As described in detail above, according to the peeling prevention structure for a laminated panel of the present invention as set forth in claim 1, the first groove portion exists between the base material and the skin material at the time of panel adhesion. Air is guided to the outside of the laminated panel and the second
With the groove portions, it is possible to reliably guide the air, which cannot be completely removed only by the first groove portions, to the outside of the laminated panel.

Further, since the second groove portion is formed so as to extend in the short side direction of the surface of the base material, the residual air in the panel can be discharged to the outside of the panel more quickly than it is formed in the long side direction. You can This makes it possible to reduce the residual air existing between the heat insulating material 2 and the skin material 3 as compared with the conventional one, and prevent the peeling of the laminated panel due to the expansion phenomenon of air in the summer or the like. That is, the production efficiency can be improved.

According to the peeling prevention structure for a laminated panel of the present invention as defined in claim 2, a high heat insulating effect can be exhibited.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view schematically showing a main part of a laminated panel to which a peeling prevention structure for a laminated panel is applied as an embodiment of the present invention.

FIG. 2 is a schematic exploded perspective view showing a laminated panel.

FIG. 3 is an enlarged cross-sectional view schematically showing a main part of a conventional laminated panel.

FIG. 4 is a cross-sectional view schematically showing an apparatus for manufacturing an evacuation type laminated panel.

[Explanation of symbols]

1 laminated panel 2 Thermal insulation (base material) 3 skin material 4 seats 5 vacuum tank 6 filling 8 First groove 9 Second groove

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hisamori Yamamoto             No. 1 Dojo, Fuchu-cho, Tousen-gun, Toyama Prefecture Mitsubishi Auto             Car Bus Manufacturing Co., Ltd. (72) Inventor Tsutomu Ishii             1302 Ono Funa, Ozo, Soejima, Fuchu-cho, Neguro-gun, Toyama Prefecture             N Industry Co., Ltd. F-term (reference) 3L102 JA07 LC21 MA00 MB12                 4F100 AB10A AT00A AT00B BA02                       BA07 CB00 DD05A DH02A                       GB32 JJ02 JK06                 4F211 AA13 AA42 AD03 AD19 AE02                       AG02 AG03 TA03 TC02 TD04                       TD11 TH17

Claims (2)

[Claims] 1. A laminated panel formed by pressure-bonding a skin material to a base material via an adhesive, having a predetermined width and a predetermined depth, and having a predetermined space on the surface of the base material to which the adhesive is applied. And a first groove formed with a width larger than the width of the first groove or deeper than the depth of the first groove, and the short side of the substrate surface at an interval larger than the predetermined interval. And a second groove portion formed so as to extend in the direction. A peeling prevention structure for a laminated panel, comprising: 2. The peeling of a laminated panel according to claim 1, wherein the base material is a heat insulating material used in a refrigerating vehicle or a cold keeping vehicle, and the skin material is an aluminum plate or a fiber reinforced resin. Prevention structure.