JPH0960144A - Composite recycle board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to recycle a synthetic resin foam. SOLUTION: In a board in which a core material 3 is sandwiched by a front face material 1 and a rear face material 2, a plurality of chips made of crushed synthetic resin foam bodies used once as a filler for the core material 3 is used again. An adhesive is used as a binder for the filler to form the front face material, 1, the rear face material 2, and the core material 3 as a united body. This is a composite recycle board A useful for architectural use making it possible to recycle synthetic resin foam bodies.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a composite recycling board for construction useful as an interior material, an exterior material, a partition material, and a base material, which is formed by reusing waste materials of synthetic resin foam used for various purposes. It is about.

[0002]

2. Description of the Related Art Conventionally, synthetic resin foams such as polyurethane foam, isocyanurate foam, and phenol foam have been utilized and used in various fields, not limited to building applications such as building interior and exterior materials and heat insulating base materials. However, synthetic resin foam does not have a clear reuse method, and therefore, the disposal of synthetic resin foam contained in waste materials such as during the manufacturing process, construction site, or when dismantling an old building is incinerated. It was either treated or landfilled. Furthermore, in recent years, the problems of smoke, harmful gas, dust, etc. due to incineration, deterioration of the incinerator at the waste disposal site due to incineration, and the problems of waste disposal due to shortage of landfill are becoming more serious, and public opinion for global environmental conservation is also increasing. Came. Further, the synthetic resin foam is not suitable for landfilling because it has a defect of weakening the ground (it does not become stable ground).

[0003]

Therefore, in the present invention, a means for reusing a synthetic resin foam that has been used once is established, and a composite for construction useful as an interior material, an exterior material, a partition material, and a base material. We propose a recycling board.

[0004]

The present invention provides a composite recycle board in which a core material is sandwiched between a surface material and a back surface material, and uses a plurality of chips obtained by crushing a synthetic resin foam once used as a filler for the core material. By using an adhesive as a binder of this filler, a front material, a back material, and a core material are integrally formed, and a composite recycle board useful for construction purposes that enables recycling of synthetic resin foam is proposed. .

[0005]

EXAMPLE A typical example of the composite recycle board A according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is an explanatory view showing the composite recycling board A.
1A is a perspective view and FIG. 1B is an enlarged view of a cross section. That is, the composite recycling board A has a front surface material 1 and a back surface material 2
And is composed of a composite plate having a laminated structure in which the core material 3 is sandwiched integrally.

The surface material 1 and the back surface material 2 are arbitrarily selected from the materials described below and used. That is, as the material, for example, steel, aluminum, copper,
Stainless steel, titanium, aluminum / zinc alloy plated steel plate, enamel steel plate, clad steel plate, laminated steel plate (PVC steel plate, etc.), sandwich steel plate (vibration suppression steel plate, etc.) (including, of course, colored metal plates coated in various colors) Surface materials such as metal thin plates such as wood, plywood such as veneer and control panel, wood, etc.

Alternatively, aluminum vapor-deposited paper, asbestos paper, aluminum kraft paper, asphalt roofing (2
2kg product), asphalt felt (17kg product), metal foil (Al, Fe, Pb, Cu), synthetic resin sheet, rubber sheet, cloth sheet, gypsum paper, aluminum hydroxide paper, glass fiber non-woven fabric, cardboard, corrugated paper Sheets such as (single-sided corrugated paper) and steel paper.

Further, among inorganic plates formed by extrusion molding, press molding, autoclave aging, etc., an inorganic material is used alone or as a laminated composite of these materials, and is used as the surface material 1 and the back material 2. It is a thing.

The core material 3 comprises a filler 4 made of synthetic resin foam chips and a binder 5 made of an adhesive. The filler 4 is obtained by collecting a synthetic resin foam contained in a waste material such as in a manufacturing process, a construction site, or dismantling an old building and crushing it into chips with a crusher or the like.

The types of synthetic resin foams are generally commercially available foams such as polyurethane foam, polyisocyanurate foam, phenol foam, vinyl chloride foam, polyethylene foam, polystyrene foam and urea foam. In addition, two or more kinds of these can be mixed and used.

The size of the crushed filler 4 can be arbitrarily selected depending on the compatibility with the binder 5 which will be described later. It is also possible to mix the fillers 4 in FIG.

Further, the shape of the filler 4 can be arbitrarily selected such as a substantially spherical shape, a cubic shape, a needle shape, a string shape, a band shape, and the fillers 4 having different shapes can be mixed and used. is there.

The binder 5 functions as an adhesive for the fillers 4 and for the front surface material 1 and the back surface material 2 to integrally form the composite recycle board A. It is arbitrarily selected from the examples described below and used. To do. That is, as an example, 1 of thermosetting adhesives such as isocyanate adhesives, urea resin adhesives, powdered hot melts, novolac-type phenol powders (foamed and non-foamed), etc.
It uses more than one kind.

In addition to the above-mentioned adhesive agent, water can be added to the binder 5 as a viscosity suppressing agent, and bases such as ammonium chloride can be added as a curing accelerator.
That is, water reduces the viscosity in the case of a liquid adhesive to increase the bulk of the adhesive so that the binder 5 is evenly spread around the outer periphery of the filler 4, and in the case of a powdery adhesive, The powder is made to easily adhere to the outer periphery of the filler 4.

FIGS. 2 to 5 are explanatory views showing the overall shape of the composite recycling board A, which is a long composite recycling having a male connecting portion 6 at one end and a female connecting portion 7 at the other end. It is a sectional view of board A. That is, FIG.
FIG. 4 shows metal siding, and FIG. 5 shows a large metal sandwich panel. In addition, in FIG. 5 (b), a composite recycle board in which the inorganic board 8 and the inorganic packing material 9 are intervened particularly in the joint portion formed by the connection of the composite recycle boards A to further improve fire resistance and fire resistance. It is A.

Here, the materials of the front surface material 1, the back surface material 2 and the core material 3 constituting the composite recycle board A are variously changed,
With regard to the finish of the composite recycled board A and the adhesive strength between the front surface material 1 and the rear surface material 2 and the core material 3, a representative constituent material was selected and tested, and the test results will be described.

FIG. 6 is a table showing the results of the above test. In the table, Example A is asphalt felt as the surface material 1,
The backing material 2 is made of wood plywood and the core material 3 is made of urea resin as the binder 5 and the filler 4 is a mixture of nurate foam and phenol foam chips in a ratio of 1: 1. In the configuration of the core material 3, the amount of the urea resin adhesive is 100 parts by weight, and the other parts are shown by weight ratios.

In Example B, the surface material 1 is a thin metal plate, the back material 2 is aluminum vapor-deposited paper, and the core material 3 is composed of an isocyanate resin as the binder 5 and nurate foam or phenol foam chips as the filler 4. 1: 1 was used as a mixture. In the constitution of the core material 3, the amount of the adhesive of the isocyanate resin is 100 parts by weight, and the others are shown by the weight ratio to this.

As the manufacturing conditions, in both Example A and Example B, the backside material 2 was laid on the mold, the filler 4 was filled, the binder 5 was poured on the backside material 2, and the surface material 1 was covered.
It is formed by pressing from both sides and heating.

As a result of the test, the finished state was a visual judgment as to whether or not the composite recycled board A was warped or twisted after the production, and all were good.

[0021]

As described above, according to the composite recycle board of the present invention, the synthetic resin foam can be reliably and usefully recycled. The board can reduce the cost. There are features and effects such as.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a composite recycling board according to the present invention.

FIG. 2 is a cross-sectional view showing the overall shape of the composite recycling board.

FIG. 3 is a cross-sectional view showing the overall shape of the composite recycling board.

FIG. 4 is a cross-sectional view showing the overall shape of the composite recycling board.

FIG. 5 is a cross-sectional view showing the overall shape of the composite recycling board.

FIG. 6 is an explanatory diagram showing a representative example of the material constitution of the composite recycle board and a table of the test results thereof.

[Explanation of symbols]

 A Composite recycle board 1 Surface material 2 Back material 3 Core material 4 Filler 5 Binder 6 Male connecting part 7 Female connecting part 8 Inorganic board 9 Inorganic packing

Claims (1)

[Claims] 1. A composite board in which a core material is sandwiched between a surface material and a back surface material, a plurality of chips made of waste synthetic resin foam are used as a filler of the core material, and an adhesive is used as a binder of the filler. A composite recycling board characterized by being integrally formed with one another.