JPS6189035A - Manufacture of composite panel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing a composite panel in which a fiber-containing hardening plastic material is layered on a metal plate.

(Prior Art) In Japanese Patent Application No. 59-87709, the inventors of the present invention described a method in which a foamed sheet material having a large number of through holes was bonded to the surface of a metal plate placed on a surface plate using an elastic adhesive. proposed a method for manufacturing composite nognel in which a fiber-containing hardening plastic material is layered on the surface of a metal plate formwork to which the same foamed sheet material is adhered.

(Problems to be Solved by the Invention) According to the above method, a metal plate to which a foamed sheet material having a large number of through holes is firmly adhered via an elastic adhesive is used as a formwork, and fibers are injected into the surface of the mold and hardened. A plastic material is poured into the foam sheet material, and the plastic material bites into the holes of the foam sheet material and is integrally bonded to the foam sheet material. , absorbing expansion and contraction due to the difference in thermal elongation between the foamed sheet material and the metal plate using an elastic adhesive, and buffering the force due to thermal elongation applied to the fiber-containing curable plastic material integrated into the foamed sheet material; This has many advantages, such as eliminating the possibility of changes such as unevenness occurring on the surface of the composite panel.

However, the alkaline liquid in the fiber-containing curable plastic material eroded the metal plate through the holes in the foam sheet material, and the fiber-containing curable plastic material entered the hole and directly attacked the metal plate. There was a risk of contact and adhesion.

(Means for Solving the Problems) The present invention has been proposed to solve these problems, and involves placing a metal plate formed in a desired shape on a surface plate, and After layering the foamed sheet material i), i.e., a lower foamed sheet part and an upper foamed sheet part having a large number of through holes, on the surface via an adhesive, the metal plate to which the foamed sheet material is adhered is used as a formwork. The present invention relates to a method for manufacturing a composite panel, which comprises layering a fiber-containing hardenable plastic material on the surface of the composite panel.

(Function) and (Effects of the Invention) In the present invention, as in the method for manufacturing a composite gunnel, a foam sheet material having perforations is not bonded directly to the surface of a metal plate in a layered manner, but the lower part is attached to the surface of the metal plate. Since the foamed sheet material and the upper foamed sheet material having a large number of through holes are layered, the fiber-containing curable plastic material cast on the upper foamed sheet material or the same There is no risk that the alkaline liquid in the plastic material will come into direct contact with the metal plate through the holes in the upper foam sheet material, and the flatness of the metal plate can be better maintained.

(Example) The present invention will be described below with reference to the illustrated embodiments.

A metal plate (1) bent into the required shape is placed on a surface plate (2).
), and an elastic adhesive (3) such as a chloroprene-based, epoxy-based, silicone-based, or urethane-based adhesive that can expand and contract following the thermal expansion of the metal is applied to the metal plate (1). ,
The lower foam sheet member (4) is made of a polyurethane foam sheet, a polyethylene foam sheet, etc. on its surface, and the upper foam sheet member (5) is made of the same material as the lower foam sheet material 14) having a large number of through holes (5α) on its surface. ) Layer a layer of toyoshi foam sheet material.

Next, after pasting an elastic material (6) such as foamed urethane to both ends of the metal plate (1), a fiber-containing hardening plastic material (7) such as glass fiber-containing concrete is placed on the foam sheet material. Spray or apply.

At this time, a part of the molding material (7) is removed from the upper foam sheet part (
5) and insert it into the upper foam sheet part (5).
), and the foamed sheet material is integrated with the metal plate (1)K.

In the figure, (8) is a peeling tape attached to the bent part of the metal plate (1) in contact with the plastic material (7);
Reference numeral 9) is a tipping stopper that is detachably set on the surface plate (2) with screws or the like on the outside of the metal plate (1).

After the plastic material (7) is hardened and integrated with the metal plate (1), the metal plate (11'& surface plate (2)) is removed to complete the manufacture of the composite panel.

As described above, the illustrated embodiment includes a foamed sheet material consisting of a lower foamed sheet portion (4) and an upper foamed sheet portion (5) having a large number of through holes (5α) via an elastic adhesive (3). Using the layered metal plate (1) as a formwork, the same metal plate (1)
), the fiber-containing hardening plastic material (7) was sprayed or applied to the upper foamed sheet part (
5) into the through hole (5a) to integrate with the foam sheet material. On the other hand, the upper and lower foam sheet parts (41 (51) and other foam sheet materials are bonded to the metal plate (1) via an elastic adhesive (3) so that they can follow the difference in thermal elongation. The force applied between the metal plate (1) and the plastic material (7) is buffered by the difference in the number of through holes (5).
Since the lower foamed sheet portion (4) is interposed between the upper foamed sheet portion (5) and the metal plate (1),
The fiber-curable plastic material (7) on the upper surface of the upper foam sheet portion (5) or the alkaline liquid in the plastic material (7) is directly applied to the metal plate through the through holes (5) in the upper foam sheet portion (5). The flatness of the metal plate (11) can be maintained even more reliably by eliminating the possibility of contact with the metal plate (11) and having an adverse effect on the metal plate (11).

In addition, since the elastic material (6) is arranged around the edge of the panel, the panel body does not change even if an expansion/contraction force due to heat acts on the panel.

Although the present invention has been described above with reference to embodiments, the present invention is, of course, not limited to such embodiments, and can be modified in various designs without departing from the spirit of the present invention. .

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view showing the implementation status of one embodiment of the method for manufacturing a composite panel according to the present invention, FIG. 2 is a partially enlarged view thereof,
FIG. 3 is a partial plan view thereof. (11...metal plate, (2)...surface plate, (3)...
Elastic adhesive, (Pak...lower foam sheet part, (5)...
Upper foam sheet part, (5cL door...through hole, (7)...
Fiber-filled hardening plastic material.

Claims (1)

[Claims] A metal plate formed into the desired shape is placed on a surface plate, and a foamed sheet material consisting of a lower foamed sheet portion and an upper foamed sheet portion having a large number of through holes is attached to the surface of the metal plate via adhesive. A method for producing a composite panel, which comprises layering, and then using the metal plate to which the foamed sheet material is adhered as a formwork, and layering a fiber-containing curable plastic material on the surface of the metal plate.