JPS59388B2 - Manufacturing method for architectural wall panels - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing architectural wall panels, particularly wall panels used in framed wall construction methods.

Traditionally, wall panels used in framed wall structures are manufactured by integrating a separately prepared plate-like material such as structural plywood into a frame made of wood, etc., by nailing, gluing, or merging the two together. was.

Plywood and other plate-like materials do not have good weather resistance, so when using this wall panel for the exterior wall of a building, cover the surface of the wall panel with waterproof paper, and then attach lath on top of it. This required a complicated process of applying mortar to the surface and then applying a finishing coat on top of that. Furthermore, plate-like materials such as plywood tend to rot during use, and the wall panels have the disadvantage that they do not have a sufficient lifespan. The present invention eliminates the drawbacks of conventional wall panels and creates long-life panels using simple processes.
The object is to manufacture wall panels for framed wall constructions, and that object is achieved by the present invention.

That is, the present invention forms a layer of glass fiber-reinforced cement slurry to a thickness of 4 mm to 25 Tm on a mold having a substantially planar mold surface, and before hardening of this slurry layer, a layer for wall panels is formed on the slurry layer. The framework is placed so that the lower part of the aggregate cross section sinks into the slurry layer in a range of 1/4 to 2/3 of the thickness of the slurry layer, and the upper part of the aggregate cross section is exposed from the slurry layer, This is a method for manufacturing an architectural wall panel comprising a frame having an outer circumference approximately the same size as the outer circumference of the panel and a glass fiber-reinforced cement board fixed to the frame, which is characterized in that the slurry layer is then cured and hardened.

In the present invention, first, a mold having a substantially planar mold surface is prepared. The mold used is one that matches the size and shape of the glass fiber reinforced cement board to be molded, and is preferably made of wood, iron plate, or FRP.
If you wish to make part or all of the surface of the glass fiber reinforced cement board that forms the exterior surface of the wall panel uneven or sloped in order to give it an aesthetic appearance or to provide structural strength. It is necessary to select a mold with a mold surface that matches the mold. To explain the present invention with reference to the drawings, as shown in Fig. 1, this mold 1 is placed with its mold surface facing upward, and glass fiber reinforced cement slurry is applied onto it by spraying or troweling. The layer 2 is preferably formed to have a uniform thickness of 4 m to 25 m. The slurry of glass fiber reinforced cement is made into a cement mortar consisting of a mixture of cement, sand and water in a weight ratio of 0.1 to 0.8 sand/cement and 0.3 to 0.5 water/cement. , to which 1 to 8% by weight of alkali-resistant glass fiber is added.

The alkali-resistant glass fiber usually has a diameter of 5 to 30 mm.
A strand of several tens to hundreds of micron strands is used, which is cut into a length of 10 to 50 m, preferably with a mole % of SlO of 62 to 750! ), Z
rO, 7-11%, R,Ol 3-23%, R℃1-10
%, Al2O3O~4%, B2O3O~6%, Fe2O
3O~5%, CaF2O~2%, TiO2O~4% (In the above composition, R is at least one alkali metal, R'1i
An alkali-resistant glass fiber having a composition of (substance selected from the group consisting of alkaline earth metals and manganese) is used. Next, as shown in FIG. 2, a separately prepared framework 3 constructed by assembling wood or lightweight type steel is placed on the slurry layer 2.

At this time, the frame 3 is supported so that the lower part of the frame 3 sinks into the slurry layer 2 to a required depth. The greater the depth of this subsidence, the greater the bonding strength between the frame and the hardened glass fiber reinforced cement board, but as the depth of the subsidence increases, the bottom surface of the frame will move outside of the cement board. Since there is a risk of exposure, if the frame is made of wood 3' as shown in Figure 3, or if the frame is made of lightweight steel 3I-(:
In some cases, the depth d of the lower surface of the framework is the thickness t of the slurry layer 2
It is preferable that it is 1/4 - 2/3 of. The operation of placing the framework 3 on the slurry layer must be carried out before the slurry hardens, and is usually carried out within as short a time as possible, preferably within 5 hours, after the slurry is prepared.

The framework is placed on the slurry and allowed to cure and harden for 24 to 48 hours, then is removed from the mold and, if necessary, is further cured for a maximum of about 15 days to harden.

This curing and curing process can be shortened by using steam or the like. In this way, as shown in FIG. 5, an architectural wall panel consisting of the frame 3 and the glass fiber-reinforced cement board 4 integrally and firmly fixed to the frame 3 is obtained. After fixing the glass fiber-reinforced cement board to one side of the frame as described above, this operation is repeated on the other side of the frame as shown in Figure 6 to form the frame 3 as shown in Figure 7. It is possible to produce wall panels with glass fiber reinforced cement boards 4, 4 (fixed) on both sides of the board, in which case insulation can be placed in the space between both cement boards. Since the glass fiber reinforced cement board of the wall panel has high mechanical strength and excellent weather resistance, the wall panel according to the present invention can be used as an exterior wall material for a long period of time.

Furthermore, according to the present invention, wall panels can be manufactured through extremely simple steps compared to conventional manufacturing methods. Next, the present invention will be explained with reference to examples. A cement slurry mixed with a ratio of sand/cement of 0.65 and water/cement of 0.4 in terms of weight ratio, respectively, was mixed with a strand of alkali-resistant glass fiber having a length of 35 TnL, and the alkali-resistant glass fiber was mixed with the cement slurry. The mixture was sprayed onto a wooden mold measuring 1 m long and 2 m wide to form a uniform slurry layer of glass fiber reinforced cement with a thickness of about 10 Tm on the surface of the mold so that it was mixed at 5% by weight.

A frame with a length of about 1 m, a width of about 2 m, and a thickness of 10 cm is made in advance using a long and thin piece of wood with a cross section of 5 cm x 10 cm.The frame is placed horizontally on the slurry layer so that the bottom surface of the frame is the top surface of the slurry layer. About 4m from! Support the frame so that the depth is . After being left in this state for about 2 days to cure and harden, the mold was removed to obtain a wall panel in which a glass fiber reinforced cement board was firmly bonded to one side of the wooden frame.

[Brief explanation of drawings]

1 and 2 are sectional views showing embodiments of the present invention, FIGS. 3 and 4 are partially enlarged sectional views of FIG. 2, and FIG. FIG. 6 is a sectional view showing another embodiment of the present invention, and FIG. 7 is a wall panel manufactured according to the embodiment shown in FIG. 6. FIG. 3 is a partially cutaway perspective view of the panel. DESCRIPTION OF SYMBOLS 1... Mold, 2... Slurry layer of glass fiber reinforced cement, 3... Frame for wall panels, 4... Glass fiber reinforced cement board.

Claims (1)

[Claims] 1. Form a layer of glass fiber reinforced cement slurry with a thickness of 4 mm to 25 mm on a mold having a substantially planar mold surface, and before curing this slurry layer, a frame for wall panels is placed on top of the slurry layer. The material is placed so that the lower part of the aggregate cross section sinks into the slurry layer to a range of 1/4 to 2/3 of the thickness of the slurry layer, and the upper part of the aggregate cross section is exposed from the slurry layer, and then the slurry layer is A method for producing an architectural wall panel comprising a frame having an outer circumference approximately the same size as the panel outer circumference and a glass fiber-reinforced cement board fixed to the frame, which is cured and hardened.