JP5028743B2 - Floor decorative material - Google Patents

Description

  The present invention relates to a floor decorative material using a wooden base material used in a house, a store, an office, a gymnasium, and the like, and particularly relates to a floor decorative material excellent in impact resistance, caster resistance, and productivity.

  Traditionally, wood-based flooring like a board was made by sticking a veneer to a plywood, processing a groove with a woodworking machine, coloring the groove, and then applying and curing an ultraviolet curable paint. However, because it is a natural wood, the colors have fallen apart, making it difficult to harmonize the colors with the walls, ceiling, and furniture. (Patent Document 1).

Also, a flooring material provided with a synthetic resin sheet between the decorative sheet and the wooden base material was also used. However, if the sheet is too thick, it is difficult to wind up in a wave shape (winding state), and continuous with the base material. Productivity does not increase due to difficulty in cutting sheets on the line when laminating. Therefore, when laminating decorative sheets (including synthetic resin layers) and wood-based substrates, make them the same size as the wood-based substrates in advance. A cut decorative sheet (including a synthetic resin layer) was prepared, and one sheet had to be laminated one by one. Moreover, since the decorative sheet (including the synthetic resin layer) has rigidity, the blades used for actual processing, grooving, and the like were quickly worn out. (Patent Document 2).
JP 52-76409 A JP 2001-123647 A

  The present invention has been made to solve the above-mentioned problems, and the subject is a floor decorative material using a wooden base material, which has impact resistance, caster resistance, and productivity. The object is to provide an excellent flooring decorative material.

The present invention has been made to solve such problems. That is, the invention according to claim 1 is a laminate in which a woody base material, a thermoplastic resin intermediate layer, and a thermoplastic resin decorative sheet are laminated at least in this order. in floor decorative material comprising Te, the thermoplastic resin intermediate layer, homopolypropylene, polypropylene, made from a sheet of at least one, and mixtures thereof a acrylic resin, a thickness of the thermoplastic resin intermediate layer is 100μm It is a decorative material for floors.

In the invention according to claim 2 , the thermoplastic resin decorative sheet is made of an amorphous crystalline polyester resin, amorphous polyester resin, biaxially stretched polyester resin, polypropylene resin or polyethylene resin having a thickness of 50 to 200 μm. a floor decorative material according to claim 1 Symbol mounting, characterized in that it consists of at least one sheet.

  According to the first aspect of the present invention, it is possible to easily provide a decorative material for a floor which can be laminated with a wood base material and a laminator system, has little abrasion of a blade, and has excellent castor resistance and impact resistance. Is possible.

  In addition, according to the invention described in claim 2, it is possible to provide a floor decorative material that is further suitable for caster resistance and impact resistance.

  Further, according to the invention described in claim 3, there is an effect of improving caster resistance and impact resistance.

  FIG. 1 shows a cross-sectional structure of an embodiment of the floor decorative material of the present invention. A wooden base material 1 is provided with a thermoplastic resin intermediate layer 3, a thermoplastic resin decorative sheet 4, and a surface protective layer 5 through an adhesive layer 2.

  Although it does not ask | require in particular as the wood-type base material 1, Southern plywood, a particle board, a medium density fiber board (henceforth MDF), and the normal plywood prescribed | regulated to Japanese agricultural and forestry standard can be used. Or the base material which consists of wood powder olefin resin, especially wood powder polyolefin resin can also be used.

  As the adhesive layer 2, a known two-component urethane-modified vinyl resin aqueous adhesive, one-component vinyl acetate resin emulsion-based adhesive, moisture-curing urethane resin-based hot melt adhesive, or the like can be used. The application amount of the adhesive layer 2 is preferably about 3 to 20 g / m 2 in weight after drying.

The thermoplastic resin intermediate layer 3 is made of at least one sheet of an amorphous crystalline polyester resin, an amorphous polyester resin, or a biaxially stretched polyester resin.
Examples of the amorphous crystalline polyester resin include polyethylene terephthalate resin, polybutylene terephthalate resin, and polyethylene naphthalate resin.
Examples of the amorphous polyester resin include “PET-G” (manufactured by Eastman Chemical Co.).
Examples of the biaxially stretched polyester resin include biaxially stretched polyethylene terephthalate resin, polybutylene terephthalate resin, polyethylene naphthalate resin, and the like.
In addition, at least one of homopolypropylene, random polypropylene, polypropylene, ternary (Three-way) polypropylene copolymer, polyethylene, polybutylene terephthalate, acrylic resin, and a mixture thereof can be used. You may add a ultraviolet absorber, a light stabilizer, and a heat stabilizer suitably to these resin.

  By setting the thickness of the thermoplastic resin intermediate layer 3 in the present invention to 50 to 240 μm, it is possible to laminate with a wood base material and a laminator method, there is little abrasion of the blade used for processing, caster resistance, and impact resistance It will be excellent. When it becomes smaller than 50 μm, caster resistance and impact resistance are inferior. Also, if it exceeds 240 μm, the rigidity of the film when laminated with the wooden base material results in poor handling properties such as difficulty in alignment or troublesome cutting of the sheet, and wear of the blade for cutting the sheet may also occur. The problem of becoming larger arises.

  As the thermoplastic resin decorative sheet 4, at least one sheet of amorphous polyester resin, amorphous polyester resin, biaxially stretched polyester resin, polypropylene resin, and polyethylene resin in an amorphous state is not only a single layer but also a plurality of layers. But it doesn't matter. The thickness of the sheet is preferably 50 to 200 μm in consideration of caster resistance, impact resistance, scratch resistance, handling properties, blade abrasion degree, and the like. Further, although not shown, a picture layer may be provided as appropriate. As the ink used for the pattern layer, a known two-component urethane resin binder made of an opaque inorganic or organic pigment, a gravure ink made of an acrylic resin and a vinyl chloride-vinyl acetate resin copolymer, or the like can be used.

  The surface protective layer 5 may be made of a UV curable resin or a two-component urethane resin to which a known UV absorber, light stabilizer, glass beads, etc. are added in consideration of slipperiness. The thickness is preferably about 6 to 15 g / m2.

  In addition, when the groove portion of the concave portion is colored after the groove processing 10, 11 or the like is performed on the thermoplastic resin decorative sheet 4, the concave coloring ink layer is a one-component liquid made of a known opaque inorganic or organic pigment, or 2 A gravure ink composed of a liquid urethane resin binder can be used.

A gravure ink (Toyo Ink Manufacturing Co., Ltd.) consisting of a two-component urethane resin binder made of a known opaque inorganic or organic pigment on one side of a 70 μm thick colored polypropylene film (“FZ21102” manufactured by Riken Technos Co., Ltd.) After printing the wood grain pattern with “Lamister” manufactured by Co., Ltd., a two-component urethane primer resin containing silica powder was applied to the surface opposite to the printed surface with a thickness of 1 μm after drying.
On this pattern layer, a two-component urethane resin adhesive is applied so that the coating amount after drying is 1 g / m 2, and on this, a mixture of homopolypropylene and random polypropylene is added with an ultraviolet absorber, a light stabilizer, Sprayed with ozone gas so that the thickness after drying of the polypropylene resin modified with maleic acid by adding a heat stabilizer is 80 μm, and further the thickness of the adhesive resin after drying is 10 μm. While coextrusion laminating. Furthermore, a recoat layer made of a two-component urethane resin having a thickness of 1 g / m 2 after drying was provided thereon to obtain a thermoplastic resin decorative sheet of the present invention.

  Then, an ultraviolet curable resin was applied thereon so that the thickness after curing was 5 μm, and cured by irradiating with ultraviolet rays to form the surface protective layer 5 with a total thickness of 165 μm.

  Polypropylene having a thickness of 100 μm is used as the thermoplastic resin intermediate layer 3, and a coating amount after drying a two-pack urethane resin adhesive (“TM-593” manufactured by Toyo Morton Co., Ltd.) is 10 g / m 2. The thermoplastic resin decorative sheet 4 and the thermoplastic resin intermediate layer 3 were dry laminated and wound up.

  Next, Lauan plywood having a thickness of 12 mm × 303 mm × 1818 mm was used as the wood-based substrate 1, and a two-component aqueous emulsion adhesive (“Rika Bond” BA-10A / BA-10B manufactured by Chuo Rika Kogyo Co., Ltd.) 100/5) in a wet state, the thermoplastic intermediate layer side is bonded to this surface with a laminator, and after curing for 12 hours, the edge reaches the actual processing and the groove reaching the woody base material After processing, joint coloring was performed with a two-component urethane resin colorant to obtain a flooring decorative material of the present invention.

Except that the thermoplastic resin intermediate layer 3 of Example 1 in a non-crystalline polyester resins having a thickness of 100μm was obtained floor decorative material in the same manner as in Example 1. The second embodiment is a reference example.

<Comparative Example 1: Thin intermediate layer>
A flooring decorative material was obtained in the same manner as in Example 2 except that the thickness of the intermediate layer of Example 2 was 40 μm.

<Comparative Example 2: The intermediate layer is thick>
A decorative material for flooring was obtained in the same manner as in Example 2 except that the thickness of the intermediate layer of Example 2 was 250 μm.

<Performance evaluation>
As an impact resistance test, a test was performed in accordance with the DuPont falling ball test (JIS K5400), and the amount of dents in the flooring was measured. The unit is mm. 0.25 mm or more is considered good.
As a caster resistance test, a nylon double caster (diameter 40 mm, 1 wheel width 9 mm, 2 wheel width 18 mm) was loaded with a weight of 25 kg (about 245 N), 10,000 times (1 stroke 20 cm or more, 5,000 reciprocations) and moved onto the specimen at a speed of 20 cm / sec. The results were evaluated visually. The case where almost no trace remained was marked with ◎, and the mark with clear trace remained was marked with ×.
As the suitability of the laminator, the ease of handling, kickback, and cutter properties (cutting with a “work cutter” manufactured by Olfa Co., Ltd.) when continuously laminated was visually evaluated. Overall, good processing was marked with ◎, and poor processing was marked with ×.
As the machinability, in the process of producing the flooring material, the degree of wear of the blade after using a machine such as a tenoner and a grooving router was visually evaluated. ◎ indicates that the material is hardly worn, and × indicates that the material is severely worn.
The results are shown in Table 1.

  The present invention relates to a decorative material for floors used in houses, stores, offices, gymnasiums and the like. More specifically, the present invention relates to a decorative sheet and a floor material that are excellent in impact resistance and caster resistance.

It is explanatory drawing which shows the structure of the cross section of one Example of the decorative material for floors of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Wood type base material 2 ... Adhesive layer 3 ... Thermoplastic resin intermediate | middle layer 4 ... Thermoplastic resin decorative sheet 5 ... Surface protective layer

Claims (2)

Woody substrates, the thermoplastic resin intermediate layer, the floor decorative material a thermoplastic resin decorative sheet formed by laminating at least in this order, the thermoplastic resin intermediate layer, homopolypropylene, polypropylene, the A acrylic resin least A flooring decorative material comprising a sheet of one kind and a mixture thereof, wherein the thermoplastic resin intermediate layer has a thickness of 100 μm.   The thermoplastic resin decorative sheet is composed of at least one sheet of amorphous polyester resin having a thickness of 50 to 200 μm, amorphous polyester resin, biaxially stretched polyester resin, polypropylene resin, and polyethylene resin. The flooring decorative material according to claim 1.

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