KR20040009456A - Insulating Sandwich Panel for Building - Google Patents

Abstract

PURPOSE: A sandwich composite panel for an exterior work of a building is provided to use stably for a long term by keeping heat resistance, heat insulation efficiency, soundproofing efficiency, waterproofing efficiency and stiffness. CONSTITUTION: The sandwich composite panel for an exterior work of a building comprises a metallic panel(10) manufacturing by pressing an aluminum or stainless steel plate using a press, then bending into the shaped of a box, and a metallic plate(30) covering up the polyurethane(20) filled/hardened in the metallic panel(10), wherein a retreated groove(11) is formed on the inside of the metallic panel(10) by scratching.

Description

Sandwich composite panel for building exterior {Insulating Sandwich Panel for Building}

The present invention relates to a sandwich type composite panel manufactured by filling an insulating material on the inner surface used for finishing the exterior wall of a building.

Conventionally, in the process of processing and producing various materials such as stone and plate metal as building exterior wall and flooring material, the production process is difficult and most of them are difficult to install due to their heavy weight and high construction cost, while the insulation effect does not meet expectations and the building exterior wall is easily due to the caulking agent. There were inconveniences such as the need to apply condensation prevention construction from time to time, and the panel was deformed and replaced by external temperature changes.

Thus, various prefabricated wall materials and panels were mobilized to make the construction more efficient during the replacement work than to improve the fundamental structure of the building materials, but cumbersome points and economic problems were always exposed.

In order to solve such a problem, a panel used as a building exterior material in the prior art is provided by curing the interior space of the inside of both panels with polyurethane (Poly Urethane) to prevent 100% waterproofing and condensation of the building. In order to maintain the long-term stability more stably by strengthening the flexural strength and the compressive strength of the plate material, a lightweight panel was provided to facilitate the constructability.

Such sandwich type composite panel repeats expansion and contraction under the influence of external temperature in the constructed state, and the metal panel and polyurethane constituting the composite panel have different physical properties, so cracks in adhesion between the metal panel and polyurethane are prevented. To ultimately separate the metal panel and the polyurethane.

In the sandwich composite panel, the present invention was devised to overcome the problem of the bonding force between the metal plate and the polyurethane. The sandwich composite panel according to the present invention scratches the inner surface of the metal panel to make a concave-convex groove on the inner surface to improve the bonding force. It is characterized by providing a sandwich composite panel manufactured by inserting a metal light weight net into the inner side of a metal panel which is press-formed into a box shape and then filling the polyurethane.

1 is a perspective view of a composite panel according to the present invention

Figure 2 is a perspective view of the cut portion of the composite panel according to the present invention

*** Description of the main symbols in the drawings ***

10: metal panel 11: groove

20: polyurethane 30: metal plate

1 is a perspective view of a composite panel according to the invention and Figure 2 is a perspective view of the cut line A-A of FIG. The composite panel according to the present invention is a metal panel (10) and metal produced by bending a metal panel (aluminum or stainless steel plate, etc.) cut to a predetermined size in a box shape by pressing as shown in Figures 1 and 2 It consists of a plate-shaped metal plate 30 covering the polyurethane 20 and the filled polyurethane 20 is filled and cured to the inside of the panel 10. The inner surface of the metal panel 10 is scratched to form the groove 11 on the surface.

Looking at the manufacturing process of the composite panel according to the present invention made of such a configuration as follows.

1) Metal panel preparation process: Prepare colored steel plate or aluminum panel of desired color according to the standard. The color of metal panel such as steel sheet is selected according to the request of the orderer.

2) molding process; The cut metal panel is put into a forming machine and formed into a predetermined shape, that is, a box shape, and continues continuously until one roll is exhausted. At this time, the miniature model is the same as the product drawing, and the lower surface forming during production becomes the outer surface during product construction.

3) Scratch: Polyurethane improves adhesiveness by widening the surface area by scratching the inner surface of the formed metal panel.

4) Pre-heating process: By applying heat to the formed metal panel, it makes the best temperature condition for urethane stock solution to foam (chemical reaction). Since urethane is chemically reacted, it is necessary to maintain the coil surface temperature at 40 ℃ ± 5 at all times so that the foam produced after the reaction is produced normally and the adhesive strength is good, and there is no unreacted undiluted solution. If the temperature conditions are not met, no foaming reaction occurs.

5) Foaming process: Urethane is a single reaction of polyol and isocyanate, so the exact equivalent weight should be matched. After adjusting the discharge amount according to the conveyor speed and product specification of the pressing process, foaming continues continuously. In addition, since urethane has a strong self-adhesive force, the upper color steel sheet is adhered using the adhesive force at the time of foaming without using a separate adhesive.

6) Compressive aging process: Since urethane stock solution expands while foaming, its volume increases rapidly, it maintains the foaming pressure while maintaining product thickness by applying a certain pressure to the upper and lower parts to adjust the pressure to create the desired thickness and shape. The side part maintains the product form through the side block while maintaining a constant time for the reaction to terminate and stabilize the foam.

The exterior composite panel according to the present invention manufactured by the process as described above is more strongly adhered to the metal panel formed polyurethane by the groove formed by the scratching formed on the inner surface of the metal panel formed polyurethane. Due to the difference in the physical properties of urethane and the metal panel, especially the thermal expansion coefficient, the peeling of urethane in the metal panel is significantly reduced. In addition, the composite panel according to the present invention increases the bending strength of the composite panel by the honeycomb collected together with the polyurethane in the inner space of the metal panel to improve the deformation resistance (耐 變形 性). Composite panel of the present invention having such a feature will be able to be used stably for a long time since the heat resistance, thermal insulation, soundproofing, waterproofing and strength after building construction is maintained firmly intact.

Claims (1)

In the sandwich composite panel to be constructed on the outer wall of the building, sandwich composite panel produced by forming a groove by scratching the inner surface of the metal panel pressed in the form of a box.