JP2567675B2 - Paper face plate and manufacturing method thereof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention provides a paper face plate and a paper face plate capable of forming a complicated concavo-convex surface while improving water absorption of excess water in concrete. The present invention relates to a manufacturing method thereof.

<Prior art and its problems> For example, a face plate (pallet) has been conventionally used for molding the front surface of a concrete block used for revetment construction.

However, this face plate is conventionally formed of an iron plate. The reason why the face plate is made of iron in this way is mainly to secure high strength, but on the other hand, since it is made of iron, it has a large weight, and as a result, it is inconvenient to handle, and the front face of the concrete block is When forming an uneven shape corresponding to the uneven pattern on the mold surface of the iron face plate in order to form the uneven pattern, it is necessary to consider the so-called draft angle at the time of demolding, so form a complicated uneven shape I couldn't. It is also a problem that the iron face plate is expensive in price, but although it is said that oil is used as a mold release agent, it is actually easy to separate it from the front of the block after curing. It wasn't normal work.

Therefore, a rubber face plate made of hard rubber and a synthetic resin face plate made of synthetic resin such as urethane or expanded polystyrene have been developed as alternatives to iron. These face plates have the advantage that the mold surface can be freely designed, but the greatest disadvantage is that they are inferior in strength. Moreover, the more complicated the shape of the mold surface is, the more part of the face plate is left in the recess in the front of the concrete block when the face plate is separated from the concrete block, making it impossible to remove it. The closer to Moreover, when using these as face plates, it is not possible to absorb the excess water that comes out of the concrete layer,
As a result, excess water and air bubbles in the concrete layer lose their escape areas, causing "pittle" -like deformation (fine irregularities) on the front of the block, resulting in a shape not formed on the face plate on the front of the block. There was also. Particularly, a face plate made of expanded polystyrene has been used as a disposable one recently, but it may cause pollution depending on the treatment after use, and it has been difficult to handle in various cases.

<Means for Solving Problems> Therefore, in order to solve the above problems, the present invention provides
A paper face plate manufactured by a paper manufacturing method, wherein at least the mold surface of the face plate main body made of paper is given a desired shape in the press part in the paper manufacturing process, and this is also used in the press part in the paper manufacturing process. , Manufactured to give the required shape, thereby making it possible to improve the water absorption of excess water in concrete, to form a complicated uneven surface, and to be disposable It is the one.

<Examples> Next, one embodiment of a paper face plate and a method for manufacturing the same according to the present invention will be described with reference to the drawings. 1 is a face plate body formed of paper, and the whole face plate body 1 The shape differs depending on the shape of the concrete block 2 to be molded, but in short, there is no difference from the conventionally used one. The face plate body 1 is made of paper as described above, but it needs to have an appropriate thickness to maintain its strength. 3 is an uneven shape formed on the mold surface of the face plate body 1,
The concavo-convex shape 3 is formed in a shape corresponding to the concavo-convex shape to be formed on the front surface of the concrete block 2 to be molded. Therefore, when the front surface of the concrete block 2 is formed to be flat, it is not necessary to form the uneven shape 3 on the face plate body 1.

In order to manufacture the above-mentioned paper face plate 4, basically, a general paper-making method may be used, but the paper-making step is generally as follows. That is, put the pulp in a pulper (dissociator), then refiner (beater)
The order of the Jordan (refining machine) paper machine (wire part press part dry part calendar part) is followed, but the shape required for the press part of the paper machine, that is, the uneven shape 3 is added. However, also in this case, in order to maintain the strength of the finished paper face plate 4, it is necessary to consider the supply of the material and the appropriate thickness.

<Examples of use> The paper face plate 4 formed as described above may be used in the same manner as a basic face plate of the related art. For example, when molding a flat concrete block 2, Two
As shown in FIG. 2 (a), a paper face plate 4 is set on the bottom of a thin box-shaped mold 5 so that the mold surface faces upward, and concrete is poured and molded. Further, in order to mold the concrete block 2 in the shape of stone, a mold 5'is set on the upper surface of the paper face plate 4 as shown in FIG. Pour concrete and mold. Further, when the surface of the concrete retaining wall 6 is to be molded, as shown in FIG. 2C, a space of the thickness of the concrete retaining wall 6 is held in advance and the inside of the formwork 5 ″ is made of paper. The face plate 4 may be fixedly installed, and concrete may be poured into the space, and in any case, the paper face plate 4 is finally removed, but at the time of this removal. It may be physically and forcibly peeled off, but it can be easily separated by, for example, watering and moisturizing the paper-made face plate 4. A part of the paper-made face plate 4 can also be separated. If it remains in the unevenness of the concrete retaining wall 6 or remains, it can be easily removed by moistening and brushing.

<Effects of the Invention> As described above, according to the paper face plate and the method for manufacturing the same according to the present invention, the following effects occur (in no particular order).

(1) The weight can be reduced, resulting in easy handling.

(2) Since it is easy to remove the paper-made face plate, it is not necessary to consider the so-called draft, so that a complicated uneven shape can be formed.

(3) Excessive water in the concrete layer can be absorbed and air bubbles can be aerated, and as a result, an unexpected shape is not generated on the concrete surface.

(4) Further, since the paper has a heat retaining property, it also contributes to shortening the curing time.

(5) It is also possible to recycle used paper, and resources can be effectively used. It is also possible to regenerate a face plate that has been used once.

(6) The increase in strength can be controlled by adding the thickness.

(7) It is cheaper than any conventionally used face plate.

(8) Even if it is incinerated for disposal after use, there is no risk of pollution.

(9) When manufacturing, a free mold surface can be formed by exchanging the mold of the press part, and the manufacturing method is also very simple.

[Brief description of drawings]

The drawings show an embodiment of a paper face plate and a method of manufacturing the same according to the present invention. FIG. 1 is a longitudinal sectional view, and FIGS. FIG. 1 ... Face plate main body 2 ... Concrete block 3 ... Concavo-convex shape 4 ... Paper face plate 5,5 ', 5 "... Formwork 6 ... Concrete retaining wall

Claims (2)

(57) [Claims] 1. A paper face plate manufactured by a paper manufacturing method, characterized in that at least a mold surface of a face plate main body made of paper has a desired shape in a press part in a paper manufacturing process. . 2. A method of manufacturing a paper face plate, characterized in that a press part in a paper making process is given a required shape.