JPS5856350B2 - Manufacturing method of exterior plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing an exterior board that is provided with a fruit for a real part at the end and is mainly used for construction.

Exterior panels are used for interior walls, ceilings, etc., so a decorative surface sheet with a beautiful pattern or color is usually pasted on the surface.

Furthermore, since the substrate that forms the main body of the exterior plate is generally made of a fragile material, a reinforcing back sheet is often attached to the back side of the exterior plate.

Exterior panels are usually used by joining multiple sheets together using a method such as a real part, so it is common to have a real part on the side end, but this part is conventionally cut. After that, these sheets were attached to the front and back sides.

However, if the real part is formed and finished using this method, it will take time and effort to cut the real part, and since the front and back surfaces of the real part are on the same plane as the front and back surfaces of the board body, it is difficult to separate both sheets. It has the disadvantage that when pasted, wrinkles and unevenness due to uneven stretching of the sheet tend to occur.

This invention eliminates these drawbacks of the conventional actual processing method.
It is an object of the present invention to provide a method for more efficiently manufacturing an exterior plate with a fruit to which sheets are successfully attached.

This will be explained below. The method for manufacturing an exterior plate according to the present invention involves forming grooves on a front sheet and a back sheet each having a width greater than or equal to the width of two exterior plates, and opening sides of both grooves formed thereby are opposite to each other. Layer both sheets so that they are facing the same direction, and introduce the substrate material into the gap while keeping the distance between these two sheets constant. Groove shapes of both sheets are formed in the middle part of the front and back sides of the layer of introduced substrate material. Accordingly, by forming similar grooves and curing, an exterior plate material is produced, which is covered with a top sheet on the front side and a back sheet on the back side, and has a thin part formed by both grooves in the middle. The feature is that a cut is made in the longitudinal direction along the groove in the middle of the thin part of the exterior plate material, and both sides of the cut are separated.

Paper, cloth, nonwoven fabric, aluminum foil, iron plate, etc. are used as the material for the top sheet and the back sheet, and grooves are formed in the middle of each sheet by a method such as roll processing.

1 and 2 show a plane and a cross section of the top sheet 1 on which grooves 11 are formed, and FIG. 3 shows a cross section of the back sheet 2 on which grooves 21 are formed.

When these sheets are cut along the center line of the groove 11.21 and cut into left and right sides, each of the left and right sides must be larger than or equal to the size of the exterior plate to be manufactured.

That is, each of the original sheets must have a width equal to or larger than the width of two exterior plates, taking into account the cutting margin and finishing margin for the edges.

Further, the length of both sheets must be at least the length of one exterior plate.

Although it is practical to form the grooves by roll processing, in this case as well, it is preferable to gradually form the grooves using a plurality of rolls, taking into consideration the processability of the sheet.

In this way, the top sheet and back sheet with grooves formed in the middle are overlapped with the center lines of the grooves aligned, and while keeping the distance between both sheets constant, the substrate material (material of substrate 3 of the exterior plate) is used in the gap. will be introduced.

The substrate material is gypsum, cement, synthetic resin, etc., and is introduced in the form of a fluid.

It is practically preferable to use a foamable material such as urethane as the synthetic resin to obtain a porous substrate with excellent properties such as sound absorption and heat insulation.

1. The substrate material introduced between the two sheets is molded by a forming means such as a forming roll so that the distance between the two sheets becomes constant except for grooves and other necessary parts. That is, the plate-shaped body (exterior plate material) obtained is cured while maintaining a state in which unnecessary unevenness is not generated.

In the process of introducing, molding, and curing the substrate material described above, grooves of the same shape that conform to the grooves of both sheets are formed in the intermediate portions of the front and back surfaces of the layer of the introduced substrate material, As a result, a thin portion is formed in the middle portion of the plate-shaped body.

Further, at this time, it is also possible to add necessary minute irregularities such as a lined pattern.

In this way, an exterior plate material having a cross-sectional shape obtained by joining two exterior plates by butting each other together is obtained.

A cross section of this exterior plate material is shown in FIG.

In the figure, 41 indicates a cut that will be made later. A cut 41 is made in the longitudinal direction along the groove in the middle of the thin part of this exterior plate material, and when both sides are cut, two exterior plates with fruit on the side edges are obtained. It will be done.

Note that the opposite end of each exterior plate is finished later by cutting or the like.

An example of the exterior plate manufactured in this manner is shown in FIG.

In the figure, 1 is the top sheet, 2 is the back sheet, 3 is the substrate, 4 is the actual part, 7 is the actual situation for the real part, 5 is the front side, and 6 is the back side.

In the above description, a case has been described in which two exterior plates are molded into a pair, but if the capacity of the equipment permits, it is also possible to combine a plurality of such pairs and mold them simultaneously.

Further, the left and right exterior plates do not necessarily have to be of the same size, and exterior plates of different sizes may be formed as a pair.

In any case, this method is extremely efficient because it allows multiple exterior plates with the fruit to be formed at once, and the surface sheet can be finished with the fruit sheet attached from the beginning. The back sheet is beautiful with no wrinkles or unevenness.

FIGS. 6 and 7 are explanatory diagrams in the case where the exterior plate material is formed by roll processing.

In the figure, 8 and 8' are sheet forming rolls, 9 and 9' are rolls for forming the exterior plate material, and 10 is a nozzle for introducing the substrate material.

Forming the exterior plate material by roll processing in this manner allows for continuous forming, which is more efficient.

The exterior plate material that is continuously molded may be cut to the length of the exterior plate after being formed.

As described above, the method for manufacturing an exterior plate according to the present invention involves forming grooves on a front sheet and a back sheet each having a width equal to or larger than that of two exterior plates, and forming both grooves thereby. The two sheets are stacked so that the opening sides of the sheets face oppositely to each other, and the substrate material is introduced into the gap while keeping the distance between the two sheets constant. By curing while forming similar grooves according to the groove shapes of both sheets, we manufacture an exterior board material that has the front side covered with a top sheet, the back side covered with a back sheet, and a thin part formed by both grooves in the middle. Then, a cut is made in the longitudinal direction along the groove in the middle of the thin part of the exterior board material, and both sides are separated, so that the exterior board with the fruit to which the sheet has been successfully attached can be obtained. It has become possible to manufacture efficiently.

[Brief explanation of the drawing]

Figures 1 and 2 are a plan view and a sectional view, respectively, of the top sheet with grooves formed therein, Figure 3 is a sectional view of the back sheet with grooves formed in it, Figure 4 is a sectional view of the exterior plate material, and Figure 4 is a sectional view of the outer sheet material. Figure 5 is a cross-sectional view of the exterior plate, Figures 6 and 7 are explanatory diagrams when forming the exterior plate material by roll processing, and Figure 7 is an enlarged view of the part where grooves are formed on the top sheet. It is. All figures show examples. 1...Front sheet, 2...Back sheet, 3...Substrate, 4...Real, 5...
...Front side, 6...Back side, 7...Actual situation,
8, 8'... Sheet forming roll, 9, 9'.
...Roll for forming exterior plate material, 1o...bent nozzle, 11.21...groove, 41...cut.

Claims (1)

[Claims] 1. A front sheet and a back sheet with a width equal to or more than the width of two exterior panels are each subjected to groove-forming processing, and the two sheets are overlapped so that the opening sides of the grooves formed by this are opposite to each other, and Introducing a substrate material into the gap while keeping the distance between both sheets constant, and curing while forming similar grooves in the middle portions of the front and back sides of the layer of the introduced substrate material according to the groove shapes of both sheets. An exterior board material is produced which has the front surface covered with a top sheet and the back surface covered with a back sheet and a thin part formed by both grooves in the middle part. A method for producing an exterior board, comprising making a cut in the longitudinal direction along the line and cutting off both sides of the cut.