KR200250209Y1 - Decorative plywood and fiberboard combination flooring board - Google Patents

Abstract

The present invention relates to a stucco composite floorboard having a multi-layer structure, and an object of the present invention is to provide a high pressure laminate (HPL) and a high density fiberboard (HDF) on the upper and lower surfaces of a medium density plywood. ), Which is composed of multilayers by adhesion at high temperature and high pressure, has excellent resistance to impact and strength, excellent wear resistance, and guarantees construction life by guaranteeing long-term adhesion state by maintaining dimensional stability by minimizing material deformation by water resistance It is to provide stucco composite floorboard that maximizes product reliability.

The above object of the present invention is a high pressure thermosetting resin (HPL) 300 is bonded to the upper surface of the water-resistant plywood 100, kraft paper 330 impregnated with the phenol resin on the lower surface is bonded with the adhesive of the thermosetting resin In the composite floorboard composed of multiple layers,

Compensating the strength of the composite floorboard by the composite floorboard formed by bonding the high-density fiberboard 400 between the water-resistant plywood 100 and the kraft paper 330 to maximize the quality of the product, high-pressure thermosetting resin makeup plate (HPL ), Which has the advantages of surface properties and water-resistant plywood, minimizes the water absorption rate and the thickness expansion rate, thereby achieving maximum dimensional stability.

Description

Decorative plywood and fiberboard combination flooring board

The present invention relates to a composite floorboard having a multi-layered structure, and more specifically, a high pressure laminate (HPL) and a high density fiberboard (HDF) are applied to the upper and lower surfaces of a medium density plywood at a high temperature. It is composed of multilayer by adhesion at high pressure, so it is excellent against impact and strength, has excellent abrasion resistance, and minimizes the deformation of material by water resistance, which ensures the construction life by guaranteeing long-term adhesion state by maintaining dimensional stability of the product. It relates to a stucco composite floorboard with maximum reliability.

Generally, plywood is a thin board of 0.5 ~ 4mm in thickness, so that the fiber direction is squeezed at right angles to each sheet, stacked in an odd number of 3, 5, 7 sheets, etc. As to manufacture, floorboards are manufactured using such plywood.

That is, as shown in Figure 1, the plywood-like patterned plate 200 on the plywood 100 is bonded with a thermosetting resin, and the surface treatment for manufacturing by coating with a transparent resin or resin having a color It is already well known.

This conventional floorboard has a disadvantage in that impact or strength is reduced as a single layer structure in which the thin pattern plate 200 is adhered on the water resistant plywood 100.

Therefore, recently, a composite floor board having a high pressure thermosetting resin (HPL) 300 bonded to the upper or lower surface of the plywood 100 has been disclosed.

As described above, the High Pressure Laminate (HPL) 300 is formed by sequentially laminating an overlay (surface protection paper) 310, a shape paper 320, and a kraft paper 330 as shown in FIG. 2. The thermosetting resin having excellent heat resistance, water resistance, acid resistance and alkali resistance on the upper surface of the kraft paper 330 prepared by impregnating the phenolic resin of the thermosetting resin having excellent insulation resistance, flame retardancy, and mechanical strength, and particularly having high adhesiveness. After laminating the shape paper 320 prepared by impregnating the melamine resin and the surface protective paper 310 is produced by heating compression (temperature: 140 ~ 160 ℃, pressure: 100 ~ 150kgf / ㎠).

However, the conventional composite floorboard has excellent surface properties by the HPL (300) to ensure abrasion resistance, and the deformation of the product by the moisture barrier effect is guaranteed, but the HPL (300) on the top of the plywood (100) However, even when the adhesive composition is formed in a plurality of layers on the lower surface, each thickness of the HPL 300 is very thin, such as 0.6 mm, so that strength that is not sufficiently endurable against external impact is not provided.

The present invention is devised to effectively solve the disadvantages of the conventional composite floorboard as described above,

The object of the present invention is to enhance the reliability of the product by providing sufficient strength against external impact by high-density fiberboard, while maintaining the surface properties and the dimensional stability of the high-pressure thermosetting resin decorative board (HPL). In providing a composite floorboard.

In the above object of the present invention, in the composite floorboard composed of a multi-layer by bonding a high pressure thermosetting resin (HPL) to the upper and lower surfaces of the water-resistant plywood,

It is achieved by a stucco composite floorboard formed by bonding a high-density fiberboard between the lower surface of the water-resistant plywood and the high pressure thermosetting resin decorative plate (HPL).

1 is a cross-sectional view showing an example of a conventional composite floor plate,

2 is a cross-sectional configuration of a high-pressure thermosetting resin decorative plate laminated on a conventional plywood,

Figure 3 is a cross-sectional view showing the configuration of the stucco wood composite floor plate of the present invention.

<Description of Symbols for Major Parts of Drawings>

100: water resistant plywood 300: high pressure thermosetting resin decorative plate

310: surface protection paper 320: shape paper

330: kraft paper 400: hard fiber board

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

That is, as shown in FIG. 3, the surface protection paper 310 and the shape paper 320 impregnated with melamine resin and the kraft paper 330 impregnated with phenol resin are sequentially formed on the upper surface of the water-resistant plywood 100. In the composite floorboard consisting of a multi-layer laminated high pressure thermosetting resin (HPL) 300 is bonded, the kraft paper 330 impregnated with the phenol resin on the lower surface is bonded with an adhesive of the thermosetting resin,

The high-density fiber board 400 is bonded between the water resistant plywood 100 and the kraft paper 330.

At this time, the fiber board 100 is made of a hard fiber board (hard board) having a specific gravity of 0.8 or more and a thickness of 5 to 7mm by heat-forming the plant fibers such as wood.

In the present invention, the water-resistant plywood 100 is a odd number of seven sheets, such as a thin sheet of 0.5 ~ 4mm thick one by one in the fiber direction at the same angle as in the conventional manufacturing process of plywood It is formed by stacking them with a phenol resin, which is a thermosetting resin.

Therefore, the water resistant plywood 100 is further strengthened by mechanical strength, which is a characteristic of the phenol resin utilized as the adhesive.

In addition, the water-resistant plywood 100, HPL (300) and kraft paper 330, the fiber board 400 is configured by heat-bonding using a thermosetting resin adhesive.

The present invention is made by bonding the high-density fiberboard 400 between the water-resistant plywood 100 and the bottom of the kraft paper 330 to sufficiently withstand the external impact that is a disadvantage of the conventional composite floorboard, the water-resistant plywood ( The water absorption of 100) is minimized and the thickness expansion rate is minimized to minimize the deformation of the product.

As described in detail above, the present invention maximizes the quality of the product by compensating the strength of the disadvantages of the conventional composite floorboard by the high-density fiberboard, and the surface properties and water resistance, which are advantages of the high pressure thermosetting resin makeup plate (HPL). By minimizing the water absorption rate and the thickness expansion rate of the plywood, the dimensional stability is maximized.

Claims (3)

The high pressure thermosetting resin makeup plate (HPL) formed by sequentially stacking the surface protection paper 310 impregnated with melamine resin on the upper surface of the water-resistant plywood 100 and the shape paper 320 and the kraft paper 330 impregnated with phenol resin ( 300) is bonded, kraft paper 330 impregnated with the phenol resin on the lower surface is bonded to the adhesive of the thermosetting resin in the composite floorboard consisting of a multi-layer, Stucco composite floorboard, characterized in that the high-density fiber board 400 is bonded between the water-resistant plywood 100 and kraft paper (330). The method of claim 1, The fiberboard 100 is a stucco composite floorboard, characterized in that made of a hard fiber board (hard board) having a specific gravity of 0.8 or more and a thickness of 5 ~ 7mm by heat-molding plant fibers such as wood. The method of claim 1, The water-resistant plywood 100 is a thin single plate (0.5) of 0.5 ~ 4mm thick each bit in a direction perpendicular to the fiber direction, stacked in an odd number of seven sheets to be molded in the same manner as usual, phenol is a thermosetting resin as an adhesive A stucco composite floorboard, which is produced by bonding to resin.