JP2006240234A - Manufacturing method of plate-like material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To manufacture plate-like material having sufficient strength by using sorted waste wood material or the like. <P>SOLUTION: The plate-like material is manufactured by using paper, wood and thermoplastic hard synthetic resin containing hard vinyl chloride resin as material. The manufacturing method comprises a pulverizing process for pulverizing the material and a shaping process for shaping the pulverized material into plates by using a heat press machine 26. The pulverizing process comprises a primary crushing process for crushing the material, a removing process for removing ferromagnetic substances such as iron or the like mixed in the material crushed in the primary process by using a magnetic separator 13, and a secondary crushing/pulverizing process for crushing and pulverizing the material, from which the ferromagnetic substances are removed in the removal process. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method for manufacturing a plate-shaped material using a waste material or the like as a raw material, and particularly relates to a technique for improving the strength of the plate-shaped material.

Conventionally, there is a method of forming a plate-like material that reuses industrial waste (see, for example, Patent Document 1). In this case, raw materials containing non-recyclable waste paper, sludge in waste water, waste paper, etc. are put into a crusher, crushed, then dried in a drying furnace, and further pulverized into a cotton form by a pulverizer Thermoplastic resins made of industrial waste are mixed, and these agitated mixtures are supplied between the hot plates of the molding machine to form a strip-like plate material using the thermoplastic resins as a binder. A plate-shaped material having a predetermined length is manufactured by cutting the sheet-like material into a predetermined length. Thereby, industrial waste can be recycled and a plate-shaped material can be manufactured.
Japanese Patent Publication No. 7-57486

However, the above-described conventional example has a problem that the produced plate-like material has insufficient strength. For this reason, the strength was insufficient to use this plate-like material for a concrete formwork or the like.
Therefore, the problem to be solved by the present invention is to make it possible to produce a plate-like material having sufficient strength by selecting and utilizing waste materials and the like.

In order to solve the above-mentioned problems, the invention described in claim 1 includes a pulverization step of pulverizing the raw material using thermoplastic hard synthetic resin containing hard vinyl chloride resin, paper and wood as raw materials, and heating the pulverized raw material. It is a manufacturing method of the plate-shaped material characterized by including the shaping | molding process shape | molded in plate shape with a press.
Thus, the pulverized thermoplastic synthetic resin can be used as a binder to bond the pulverized paper and wood to form a plate-like material continuously by a hot press. Further, since the thermoplastic hard synthetic resin contains a hard vinyl chloride resin, the hard vinyl chloride resin can be reused.

Furthermore, invention of Claim 2 is a manufacturing method of the plate-shaped material of Claim 1, Comprising: The primary crushing process in which the said crushing process crushes the said raw material, and the magnetic separator from the raw material crushed in the said primary crushing process And removing a ferromagnetic material such as iron mixed in the raw material, and a secondary crushing and crushing step of crushing and crushing the raw material from which the ferromagnetic material has been removed in the removing step. It is a manufacturing method of plate-shaped material.
As a result, a thermoplastic hard composite in which ferromagnetic materials such as iron (for example, clips for binding documents, staples for staples, nails, screws, etc.) mixed in the raw material preliminarily crushed in the primary crushing process are crushed. Since it is in a state separated from resin, paper, and wood, it is easily removed from the raw material by a magnetic separator in the removal step. Next, the raw material from which the ferromagnetic material has been removed by the secondary crushing / crushing step can be further crushed / crushed.

According to invention of Claim 1, a plate-shaped material can be manufactured from the thermoplastic hard synthetic resin, paper, and wood in industrial waste as a raw material. The paper in the raw material can smooth the surface of the plate-like material, and the wood in the raw material can improve the strength of the plate-like material. Furthermore, since this plate-like material can be a raw material for the method according to claim 1, it can be reused any number of times. Moreover, since the thermoplastic hard synthetic resin contains a hard vinyl chloride resin, the generation of dioxins generated when the hard vinyl chloride resin is discarded and incinerated can be reduced.
Further, according to the invention described in claim 2, together with the effect of the invention described in claim 1, the ferromagnetic material such as iron mixed in the raw material is efficiently removed, and the quality of the produced plate-like material is improved. Can be improved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 illustrates a method for producing a plate material of the present invention.
As shown in FIG. 1, thermoplastic hard synthetic resin containing hard vinyl chloride resin, paper and wood are used as raw materials. As the thermoplastic hard synthetic resin, for example, waste plastic products which are thermoplastic resin molded products such as household goods, furniture, building materials, electrical parts, industrial materials and the like can be used. Further, as the paper, for example, used paper such as books, newspapers, weekly magazines, comic books, telephone books, notebooks, and papers copied with a copy machine can be used. Moreover, for example, wood chips, waste wood from construction, wood fragments, discarded wood products, and the like can be used as the tree.

The first conveyor 10 conveys this raw material in the right direction in the figure (in the direction of the arrow 10a) and puts it into the primary crusher 11. In the primary crushing step, the raw material charged with the primary crusher 11 is crushed. Next, in a removal process, the 2nd conveyor 12 conveys the raw material crushed with the said primary crusher 11 to the illustration right direction (direction of arrow 12a). And the magnetic separator 13 attracts and removes ferromagnetic materials, such as iron, mixed with the raw material currently conveyed by the 2nd conveyor 12 with magnetic force.
Next, in the secondary crushing and crushing step, the raw material conveyed by the second conveyor 12 (with the ferromagnetic material removed) is crushed by the secondary crusher 14, and further, the secondary crusher 14 The crushed raw material is blown through the first duct 16 by the air of the first blower 15 and is fed into the pulverizer 17. The pulverizer 17 pulverizes the charged raw material into cotton. The raw material crushed by the pulverizer 17 is blown through the second duct 19 by the air from the second blower 18 and sent to the cyclone 20. The cyclone 20 separates the sent air and the raw material, and puts the separated raw material into the storage tank 21.

  Next, in the molding process, the third conveyor 22 conveys the raw material charged and stored in the storage tank 21 in the right direction in the figure (the direction of the arrow 22a), and further the fourth conveyor 23 conveys the raw material by the third conveyor 22. The produced raw material is conveyed in the upper right direction (the direction of the arrow 23a) in the figure. The raw material conveyed by the 4th conveyor 23 is thrown into the space pinched | interposed by the 5th conveyor 24 and the 6th conveyor 25. FIG. The fifth conveyor 24 and the sixth conveyor 25 convey the raw material put into the space into a hot press machine 26 (supported by a plurality of columns 26b). In addition, the conveyance direction of the 5th conveyor 24 is the direction of the arrow 24a, and the conveyance direction of the 6th conveyor 25 is the direction of the arrow 25a.

A hot press machine 26 continuously heats and compresses the raw material conveyed by the fifth and sixth conveyors 24, 25 between upper and lower heated iron plates (not shown) to form a strip-shaped plate material 40 (the thickness of the plate is, for example, 12 mm).
At that time, the pulverized thermoplastic hard resin in the raw material becomes a binder, and the pulverized paper and wood in the raw material are combined to form the strip-shaped plate material 40. The formed belt-like plate-shaped material 40 is conveyed rightward in the figure (in the direction of the arrow 26a) by the fifth and sixth conveyors 24, 25, cooled with cooling water (not shown), and sent to the cutter 30. The cutter 30 cuts the fed strip-shaped plate material 40 into a predetermined length. The cut plate material 40 is laminated on the table 31.

According to the manufacturing method of the plate-shaped material having the above configuration, the following is obtained.
That is, the crushed thermoplastic synthetic resin can be used as a binder, and the crushed paper and wood can be combined to form the plate-like material 40 continuously by the hot press 26. The paper in the raw material can smooth the surface of the plate-like material 40, and the wood in the raw material can improve the strength of the plate-like material 40.
Further, since the thermoplastic hard synthetic resin contains a hard vinyl chloride resin, the hard vinyl chloride resin can be reused. For this reason, dioxins are conventionally generated when the hard vinyl chloride resin is discarded and incinerated, but the generation of dioxins can be reduced by reducing the waste incineration of the hard vinyl chloride resin. Further, since the plate-like material 40 can be a raw material of the present invention after use, it can be reused any number of times.

  In addition, a rigid thermoplastic material such as iron, which is a material for clips, staples, nails, screws, nuts, and the like, which binds documents mixed in raw materials preliminarily crushed in the primary crushing process. Since it becomes a state separated from the synthetic resin, paper and wood, it is easily removed from the raw material by the magnetic separator 13 in the removal step. Next, the raw material from which the ferromagnetic material has been removed by the secondary crushing / crushing step can be further crushed / crushed.

The raw material composition is 24% crushed wood, 24% low-quality waste paper, 36% polyethylene, and 16% polypropylene. Then, the molding conditions of the plate-like material 40 by the hot press machine 26 are a plate thickness of 8 mm, a molding temperature of 220 ° C., and a pressurization time of 10 minutes.
A board formed only of wood and a thermoplastic hard resin has a rough surface and many irregularities, but the surface of the plate-like material 40 becomes smooth by blending waste paper according to the above embodiment. Moreover, although the board formed only with paper and a thermoplastic hard resin is not enough intensity | strength, the bending strength of the plate-shaped material 40 became 180 kgf / cm < ² > by mix | blending wood by the said Example.

  That is, it was possible to improve the surface properties and the strength of the plate-like material 40 by blending both waste paper and wood as aggregates. For this reason, it became possible to use the plate-shaped material 40 for a concrete formwork. If the surface of the concrete formwork is uneven, the smoothness of the concrete surface is impaired. However, since the surface of the plate material 40 is smooth, if the plate material 40 is used for the concrete formwork, the concrete surface Can be smooth.

  Practically, when the plate thickness is changed from 8 mm to 12 mm, a concrete formwork material having sufficient strength is obtained. The concrete formwork made of this plate-like material 40 can be an alternative to the currently used wood plywood concrete formwork. As a result, the consumption of forest resources can be reduced and the forest resources can be protected.

In the above-described embodiment, the cyclone 20 may be omitted and the crushed raw material may be directly charged into the storage tank 21.
Further, when a ferromagnetic material such as iron is not mixed in the raw material, the magnetic separator 13 may be omitted.

It is explanatory drawing of the manufacturing method of the plate-shaped material of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Primary crusher 13 Magnetic separator 14 Secondary crusher 17 Crusher 26 Heat press machine 40 Plate material

Claims (2)

A pulverizing step of pulverizing the raw material using thermoplastic hard synthetic resin containing hard vinyl chloride resin, paper and wood as raw materials;
And a forming step of forming the pulverized raw material into a plate shape by a hot press. It is a manufacturing method of the plate-shaped material according to claim 1,
In the primary crushing step in which the crushing step crushes the raw material, the removal step of removing ferromagnetic materials such as iron mixed in the raw material from the raw material crushed in the primary crushing step by the magnetic separator, and the removal step A method for producing a plate-like material comprising a secondary crushing and crushing step of crushing and crushing a raw material from which a ferromagnetic material has been removed.

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