JPH0239926A - Manufacture of insulated panel - Google Patents

Abstract

PURPOSE:To flatten a flat plate section and manufacture an insulated panel without warp in foam molding by means of a molding double conveyor by forming a projected line protruding downward and crooking the flat plate sec tion protruding downward. CONSTITUTION:A plurality of projected line 6 protruding downward for reinforcing or patterning are protruded in parallel with rising edges 2 on a flat plate section 1 of a metal base 3. Then, the whole flat plate section 1 is crooked in a manner that the central section of the flat plate section 1 is protruded downward. Said metal base 3 is fed to a molding double conveyor 4, and foaming resin 5 is foam molded while conveying said metal base. Even if the flat plate section 1 of the metal base 3 is crooked downward, the same is pinched between upper and lower conveyors 9 and 10 of the molding double conveyor 4 and corrected to be flattened by receiving foaming pressure. A resin foamed material 12 composed of foamed and cured foaming resin is backed with the metal base 3. The same is cut into proper sizes to manufacture an insulated panel.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application 1] The present invention relates to a method for manufacturing a heat insulating panel in which a metal substrate is lined with a resin foam.

[Prior Art] Conventionally, when manufacturing this type of heat insulating panel, a metal substrate 3 having rising edges 2 on both sides of a flat plate portion 1 is fed to a forming double conveyor 4 as shown in FIG. A foamable resin 5 is supplied on top and foam molding is carried out while being fed by a molding double conveyor 4.

[Problem to be Solved by the Invention 1] By the way, the flat plate part 1 of the metal substrate 3 has four stripes 6' that rise up and are concave toward the upper surface parallel to the greenery 2 for patterning and reinforcement.
Multiple lines are formed. However, when this upper concave groove 6' is formed by ohming the roll 7, the flat plate part 1 is curved to protrude upward, and the metal substrate 3 is placed on the forming double conveyor 4.
Even if the foamed resin 5 is supplied to the metal substrate 3 and foam-molded while being fed by the molding double conveyor 4, the warpage due to the above-mentioned curvature remains (at the foaming pressure when the foamable resin 5 is foamed, there is almost no warping. The problem was that it was not corrected. In addition, since the four-striped structure 6' is constructed, there is a problem in that grooves are formed in the flat plate portion 1 which becomes the surface, and if dirt adheres thereto, it is difficult to remove the dirt.

The present invention has been made in view of the above points, and an object of the present invention is to obtain a heat insulating panel that does not have warpage on the flat plate portion of the metal substrate, and that also prevents dirt from adhering to it. The purpose of the present invention is to provide a method for manufacturing a heat insulating panel.

[Means for Solving the ts Problem j In order to achieve the above object, the method for manufacturing a heat insulating panel of the present invention includes a metal substrate 3 having a rising green 2 on both sides of a flat plate portion 1.
A plurality of protruding stripes 6 protruding downward are formed on the flat plate portion 1 of the pitcher 1 by rising up and protruding parallel to the pitching direction of the green 2, so that the flat plate portion 1 protrudes downward by forming the protruding stripes 6. A curved metal substrate 3 is supplied to a double molding conveyor 4, and a foamable resin 5 is supplied onto the metal substrate 1, and foam molding is carried out while being fed by the double molding conveyor 4.

[Function] By forming the convex strips 6 to protrude downward and curving the flat plate portion 1 so as to convex downward, a double molding is performed when the foamable resin 5 is foam-molded on the double molding conveyor 4. The curvature of the flat plate part 1 is corrected by the conveyor 4 so that it becomes flat, and a heat insulating panel A without warping can be obtained.

[Embodiment 1] The metal substrate 3 is formed by rolling a metal plate such as aluminum with a roll 7.

The flat plate portion 1 of the metal substrate 3 has rising edges 2 on both sides, and a fitting protrusion 7 is provided horizontally protruding from one rising edge 2, and the fitting protrusion 7 is provided on the other rising edge 2. Piece 7
It has a fitting recess 8 into which it fits. The flat plate part 1 of the metal substrate 3 is provided with a plurality of protruding stripes 6 that protrude downward in parallel with the rising green 2 for reinforcement and patterning. As a result, the entire flat plate part 1 is curved so that the central part of the flat plate part 1 protrudes downward.

The forming double conveyor 4 is composed of an upper conveyor 9 that guides the upper side, a lower conveyor 10 that guides the lower side, and side conveyors 11 that gate both sides. The metal substrate 3 is supplied to a forming double conveyor 4, and the metal substrate 3
A foamable resin (for example, 7-enol-based resin) 5 is supplied on top, and a foamable mM 5 is foam-molded while the metal substrate 3 is fed by a molding double conveyor 4, as shown in FIG.

At this time, even if the flat plate part 1 of the metal substrate 3 is curved downward, it is held between the upper and lower conveyors 9 and 10 of the double forming conveyor 4 and is corrected to be flat by being subjected to foaming pressure.

Then, the resin foam 12 is formed by foaming and hardening the foaming WaS.
is lined with a metal substrate 3 and cut into appropriate dimensions to form a heat insulating panel A as shown in FIGS. 3(a) and 3(b). The thus formed heat insulating panel A is used as a ceiling material or wall material in a bathroom.

[Effects of the Invention] As described above, the present invention has a method in which a plurality of protruding stripes protruding downward are formed on a flat plate portion of a metal substrate by rising up and protruding parallel to the pitching direction of 9kk, and forming the protruding stripes. A metal substrate curved so that the flat plate part protrudes downward is fed to a molding double conveyor, and foaming resin is supplied onto the metal substrate and foam molded while being fed by the molding double conveyor. Therefore, even if a convex strip is formed on the flat plate part, the flat plate part will curve so as to protrude downward, and when performing foam molding on a forming double conveyor, the curvature of the flat plate part can be corrected and made flat,
Even if a convex strip is provided, it is possible to obtain a heat insulating panel that does not warp, and because the convex strip protrudes downward, dirt does not get in unlike conventional concave strips, and even if dirt gets on it, it is easy to remove. Moreover, since the flat plate part is lifted by the protruding stripes, it is difficult for dirt to adhere to it.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing the state in which protrusions are formed on the flat plate portion of the metal substrate according to the method of the present invention, Fig. 2 is a cross-sectional view showing the same foam molding state as above, and Fig. 3 (,) (b) is A front view and a bottom view of the heat insulating panel obtained as above, and FIG. 4 is a sectional view of the conventional example, in which 1 is a flat plate part, 2 is a rising edge, 3 is a metal substrate, 4 is a forming double conveyor, and 5 is a sectional view of a conventional example. In the foamable resin, 6 is a convex strip. Agent Patent Attorney Ishi 1) Ai Shichi

Claims (1)

[Claims] [1] A plurality of protruding stripes protruding downward are formed on a flat plate portion of a metal substrate having rising edges on both sides of the flat plate portion by bending them in parallel with the longitudinal direction of the rising edges, and by forming the protruding stripes, Manufacturing of a heat insulating panel characterized by supplying a metal substrate curved so that the flat plate part protrudes downward to a forming double conveyor, supplying a foamable resin onto the metal substrate, and performing foam molding while feeding the metal substrate on the forming double conveyor. Method.