JPH09151594A - Direct sticking flooring - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide flooring capable of rationalizing execution work by adding wooden powder, and subsequently laminating vinyl chloride resin layer having specific bending modulus of elasticity, adhesive bond, sliced veneer single plate or sliced veneer decorated plywood layer and transparent surface layer. SOLUTION: Wooden powder is added, and vinyl chloride resin layer 1 having 50-2000kg/cm<2> of bending modulus of elasticity, adhesive bond 2, sliced veneer single plate or sliced veneer decorated plywood layer 3 and transparent surface layer 4 are subsequently laminated. The resin layer 1 is formed of vinyl chloride resin having 600-1300 degree of polymerization, plasticizer of 30-120 pts.wt. at per 100 pts.wt. of resin and wooden powder having 50-200 pts.wt. By the constitution, proper flexibility is provided, execution efficiency and following efficiency to substrate are excellent and, at the same time, flooring without having stain of adhesives to the surface of the sliced veneer can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a direct-applying flooring material, and more particularly to a direct-applying flooring material for a concrete slab in a condominium, an apartment house, a detached house, a rough floor, or a concrete panel. .

[0002]

2. Description of the Related Art Flooring, which is a wood-based flooring material, is often used as a flooring material for houses in which a natural veneer veneer or natural veneer decorative plywood is laminated on a plywood base material with an adhesive. . These flooring can be adhered to the concrete slab surface with an adhesive, laid on the waste plywood installed on the concrete slab surface, or by directly attaching the wooden floor material to the joists of the wooden floor set. It is constructed by the method. Wood-based flooring materials such as this flooring are excellent in terms of the feel of wood with natural wood and in terms of design, and are widely used especially for floor materials in general houses.

[0003]

Since the wooden flooring material using the plywood base material as described above generally has high rigidity of the plywood, if the base surface has irregularities, adhesion failure is likely to occur, and walking or impact may result. Sound is generated and becomes a problem. Skilled technology is also required for construction. On the other hand, in the construction of a residential building, in the case of interior work, the interior work of the ceiling and the wall is often done after the floor work is performed due to the work procedure. However, in this case, if flooring is applied to the floor construction, it is necessary to protect and cure the floor surface, which is also a cause of poor workability.

An object of the present invention is to solve the inconveniences of the above-mentioned wood flooring made of a plywood base material.
More specifically, it is a flooring material that has the texture and design of a conventional natural veneer, but it can be constructed without causing any inconvenience on the concrete slab surface, the thrown plywood, or the unevenness of the floor of the joist. The purpose is to provide a floor material that can streamline the work.

[0005]

The gist of the present invention is a vinyl chloride resin layer containing a wood powder and having a flexural modulus of 50 to 2000 kg / cm ² , an adhesive layer, a veneer veneer or a veneer decorative plywood layer. , And a transparent surface layer are laminated in that order, and another aspect of the present invention is that a vinyl chloride resin layer containing wood powder has a mean degree of polymerization of 600 to 1300. Vinyl-based resin and 3 per 100 parts by weight of the resin
The above-mentioned floor material for direct application is composed of 0 to 120 parts by weight of a plasticizer and 50 to 200 parts by weight of wood powder, and yet another gist thereof is for concrete panels, concrete slabs or rough floors. It exists in the above flooring materials for homes.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The vinyl chloride resin used in the present invention includes a homopolymer of vinyl chloride and a copolymer of vinyl chloride and another monomer copolymerizable therewith.
Other monomers copolymerizable with the vinyl chloride monomer include
Any conventionally used one can be used without any particular limitation. Examples of the other monomer include vinyl acetate, vinyl propionate, vinyl stearate and other vinyl esters, methyl vinyl ether,
Alkyl vinyl ethers such as ethyl vinyl ether, octyl vinyl ether, lauryl vinyl ether and cetyl vinyl ether, α-olefins such as ethylene,
Acrylic acid, methacrylic acid and other monounsaturated acids, and alkyl esters such as methyl ester and ethyl ester of these monounsaturated acids, maleic acid, fumaric acid, itaconic acid and other divalent unsaturated acids, and Examples thereof include alkyl esters such as methyl ester and ethyl ester of diunsaturated acid, vinylidene compounds such as vinylidene chloride, unsaturated nitriles such as acrylonitrile, and mixtures of two or more thereof. These other monomers are usually 30% by weight or less, preferably 20% by weight, based on the vinyl chloride monomer.
It is used in a proportion of not more than wt%, but there is no particular limitation.

In the flooring material of the present invention, the flexural modulus of the vinyl chloride resin layer containing wood powder is 50 to 2000 kg.
/ Cm ² . Flexural modulus is 50 kg / cm ²
If it is less than the above range, it is too soft and the laminated veneer plate or the transparent surface layer may be deformed and cracked during handling, which is not preferable. Further, there is a problem that workability is deteriorated when laminating the veneer plate or laminating or applying the transparent surface layer. On the other hand, when the flexural modulus exceeds 2000 kg / cm ² , the rigidity is too high, and the problem of the conventional method that adhesion failure occurs during floor material construction and that the construction requires skill is impossible.

The vinyl chloride resin used in the present invention preferably has a polymerization degree in the range of 600 to 1300. If the polymerization degree is too low, the vinyl chloride resin sheet containing wood powder is inferior in physical properties, which is not preferable. Conversely, if the degree of polymerization is too high, the apparent melt viscosity of the resin becomes high when a wood powder-containing vinyl chloride resin sheet is produced by, for example, extrusion molding, and thus the load on the extruder is large and the sheet productivity is high. It is not preferable because it tends to be inferior. The degree of polymerization of the vinyl chloride resin is more preferably 700 to 1100.

There are no particular restrictions on the wood species used as the raw material for the wood powder added to the vinyl chloride resin used in the present invention.
Choose from fir, hemlock, poplar, and other coniferous and hardwood trees. It is preferable to use fine powder of these wood powders having an average particle size of 80 to 200 mesh by dry or wet pulverization. When the average particle size of the wood powder is as large as 80 mesh or less, heat generation due to frictional resistance during mixing with a vinyl chloride resin or during extrusion molding becomes large, and the heat resistance of the vinyl chloride resin tends to decrease, which is preferable. Absent. In addition, fine wood powder having an average particle size of 200 mesh or more is not preferable because it requires time and labor for the crushing process and the sieving process and is expensive.

[0010] The amount of wood flour added is the vinyl chloride resin 1
It is preferable to use 50 to 200 parts by weight of wood powder per 00 parts by weight. When the amount of wood powder is less than 50 parts by weight, when the veneer layer is adhered via the adhesive layer, the adhesive often exudes to the surface of the veneer to contaminate it, or sufficient adhesive strength cannot be obtained, which is preferable. Absent. On the other hand, if the wood powder exceeds 200 parts by weight, the apparent viscosity during kneading with the vinyl chloride resin will be high, and the surface of the sheet will be rough during extruding, and the edge of the sheet will be easily scratched. This is not preferable because the productivity is poor and the physical properties of the sheet are also poor.

The plasticizer used in the present invention is not particularly limited as long as it is a plasticizer usually used for vinyl chloride resins. For example, phthalic acid diester-based plasticizers such as di-2-ethylhexyl phthalate, diisononyl phthalate, and di-n-octyl phthalate, trimellitic acid tri-2-
Trimellitic acid triester-based plasticizers such as ethylhexyl and triisodecyl trimellitic acid, di-2 adipate
An aliphatic dibasic acid diester-based plasticizer such as ethylhexyl, diisononyl azelate and di-2-ethylhexyl sebacate, an aliphatic dibasic acid such as adipic acid, and 1,4
Examples thereof include polyester-based plasticizers having a structure of polycondensation with glycol such as butanediol, and epoxy-based plasticizers such as epoxidized soybean oil, epoxidized linseed oil, and epoxy resin.

The plasticizer is 30 to 120 parts by weight, preferably 40 to 11 parts by weight per 100 parts by weight of the vinyl chloride resin.
It is preferable to use 0 part by weight in terms of physical properties and hardness. The vinyl chloride resin mixture containing wood powder can be produced, for example, by introducing the wood powder and the plasticizer together with the vinyl chloride resin into a stirring and mixing device such as a ribbon blender or a Henschel mixer. At this time, when the water content of the wood powder used is 3% by weight or more, water is removed in advance by an oven or a hopper dryer, or a ribbon blender,
It is preferable to remove water by stirring with heating in a Henschel mixer. To this end, when the stirring and mixing device has a heating facility, for example, in a Henschel mixer, the wood flour temperature is set to 1 at a low speed rotation of 100 to 500 rpm.
It may be stirred at 15 ° C for 20 to 20 minutes (30 minutes or more if the water content is high) while evacuating at about 00 ° C. Without heating equipment, Henschel mixer 1000-3000r
Moisture can be removed by raising the temperature of the wood powder by frictional heat generation at a high speed rotation of about pm, and after raising the temperature, stirring at the same low speed as the above while exhausting and stirring.

After the wood powder is dried, ordinary vinyl chloride resin compounding agents may be sequentially added to the mixing device. In addition to vinyl chloride resin plasticizers, stabilizers, lubricants, pigments, etc. which are commonly used May be blended. When the wood powder is dry, it may be treated in the same manner as other compounding agents. A vinyl chloride resin mixture containing wood powder is obtained by charging a predetermined compounding agent, stirring and mixing to dry up. In order to form the vinyl chloride resin containing wood powder into a sheet, the above mixture may be kneaded with a Banbury mixer and then formed into a sheet with a heating mill roll, or the mixture may be directly applied to a T-die extrusion molding machine. You may throw in and sheet-mold. In addition, at the time of T-die extrusion molding, the above mixture is preliminarily sheet-formed using a Banbury mixer, a mill roll, etc. and then pelletized by a rotary cutter, or a twin-screw extrusion kneader equipped with a hot-cut device. You may use what was done.

The molding temperature of the sheet is preferably in the range of 130 ° C to 150 ° C, and the thickness of the sheet may be molded in the range of 1 to 5 mm. In order to process the vinyl chloride resin sheet containing wood powder obtained as described above into a floor material,
Urea resin type, melamine resin type, vinyl acetate emulsion type, ethylene acid vinyl emulsion type, acrylic emulsion type, urethane emulsion type, etc. are applied to one side of this sheet by a coating device such as a roll coater, a blade coater, a curtain coater and a spray coater. The veneer or the veneer decorative plywood (hereinafter collectively referred to as the "veneer or the like") may be adhered by applying the adhesive. A device such as a hot press, a cold press, or a vacuum press can be used for adhesion. The amount of adhesive applied is preferably in the range of 100 to 200 g / m ² .

After adhering the veneer plate or the like, the surface of the veneer plate or the like may be colored with a coloring agent for improving the design and appearance. The transparent surface layer is laminated for the purpose of improving the appearance and scratch resistance while maintaining the wood-like design of the veneer. The transparent surface layer may be formed by applying a floor coating material such as acrylic or urethane resin coating material used for flooring or the like with a roll coater, curtain coater, spray coater or the like. Usually, this surface layer is transparent, but may be semitransparent in some cases. The transparent surface layer is
After coating and drying the first layer, the surface may be polished by a sander or the like, and the second layer and the following layers may be further coated to perform multi-layer coating. After applying the paint, it may be heat-treated by a drying facility or may be dried at room temperature. The thickness of the transparent surface layer is preferably in the range of 100 to 500 μm. It is possible to obtain the flooring material for direct application of the present invention by cutting the laminated body produced in this way to a desired size.

[0016]

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to the following examples. <Example 1> Wood powder of rice hemlock (particle size: 100 mesh all) was put into a super mixer, and the wood powder temperature was 100 ° C.
The temperature was raised so that the temperature became equal to, and the mixture was stirred for 20 minutes at a rotation speed of 300 rpm while the mixer inlet was opened to perform preliminary drying. The water content of the obtained wood flour was 2.7%. To 1500 g of this wood powder, 1000 g of vinyl chloride resin having an average degree of polymerization of 1050 and 100 g of di-2-ethylhexyl phthalate.
0 g, Ba-Zn-based liquid stabilizer 25 g, ethylenebisamide-based lubricant 5 g, polyethylene-based wax 5 g, epoxidized soybean oil 30 g, and titanium white-based pigment 100 g were added and mixed with stirring, and a vinyl chloride resin mixture containing wood powder ( Hereinafter referred to as "blend containing wood powder").

The same procedure was repeated to prepare a blend containing about 12 kg of wood flour. This blend with wood flour, 6
Thickness of 4 mm and width of 310 mm using a 5 mmφ extruder
A sheet was formed by molding with a die (temperature 140 ° C.).
The obtained sheet was cut into a length of 185 cm. This sheet is used as a vinyl chloride resin containing wood powder and has a urethane emulsion adhesive (CVC3 manufactured by Konishi Co., Ltd.) on one surface thereof.
0) was applied at a coating amount of 200 g / m ² using a roll coater, and a 0.2 mm thick veneer (white oak) was pressed for 3 minutes with a press molding machine at a temperature of 50 ° C.,
I glued the sheet and veneer.

Next, the veneer surface of the obtained sheet is # 2.
After polishing with a 00 sander, a transparent coating (Urel Sanding Sealer No. 263L; manufactured by Arakawa Paint Co., Ltd.) was applied with a roll coater (100 g /
m ² ). After coating, dry at room temperature, polish with # 200 sander, and further clear paint (Polyurex Flat Clear / Curing agent = 4/1; Woshin Chemical Industry Co., Ltd.)
Was applied by a roll coater (80 g / m ² ) and dried at room temperature to form a transparent surface layer. After drying 30.3c
The edge was cut to obtain a flooring material having a size of m × 182 cm.

<Example 2 and Comparative Examples 1 to 3> Wood powder, wood powder dried, except that the amounts of the compounding agents were set to the values shown in Table 1.
Each sheet was molded under the same blending conditions, plasticizer type, and other additives as in Example 1. The floor material processing after sheet formation was also made with the same materials and conditions as in Example 1.

<Measurement / Evaluation Method> (1) Bending elastic modulus of sheet Temperature condition 23 ° C. Sample size Width 30 mm × Length 120 mm Distance between fulcrums 50 mm Speed 10 mm / min

(2) Workability A mortar coating was applied to the concrete floor at intervals of a width of 60.3 cm, and a height difference of 3 mm was sequentially provided on the direct-bonding base for test construction, and an epoxy adhesive (made by Cemedine Co., Ltd.) was used. EP-
331) was applied to a thickness of 1 mm and each floor sheet of Examples 1 and 2 and Comparative Examples 1 to 3 was applied, and the workability and the followability of the underlying stepped portion were visually evaluated. Workability: Good: Good workability. (Substrate followability) Δ: The followability to the substrate is slightly inferior. X: Poor followability to the substrate and poor adhesion occurred.

(3) Veneer Adhesion The phenomenon of adhesive seepage on the surface of the veneer when the sheet and the veneer were adhered was visually evaluated. ◯: No adhesive was found on the surface of the veneer. Δ: The adhesive is slightly exposed. X: The adhesive remarkably appears on the surface of the veneer and deteriorates the appearance.

[0023]

[Table 1]

[0024]

[Table 2]

[0025]

According to the present invention, as a floor material for direct attachment,
Veneer veneer with a transparent surface layer or veneer decorative plywood, laminated with vinyl chloride resin containing wood powder through an adhesive layer, provides appropriate flexibility and construction. It is possible to obtain a flooring wind floor material which is excellent in the property and conformability to the base and does not exude the adhesive to the surface of the veneer plate.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an example of a floor material for direct attachment of the present invention.

FIG. 2 is a construction example of the flooring material of the present invention.

FIG. 3 is a construction example of the flooring material of the present invention.

[Explanation of symbols]

 1 Wood Powder-Containing Vinyl Chloride Resin Layer 2 Adhesive Layer 3 Veneer Layer 4 Transparent Surface Layer 5 Flooring Material of the Present Invention 6 Adhesive for Construction 7 Mortar Coating 8 Concrete 9 Waste Plywood 10 joist

Claims (3)

[Claims] 1. A bending elastic modulus of 50 to 20 containing wood powder.
A flooring material for direct bonding, which is obtained by sequentially laminating a vinyl chloride resin layer of 00 kg / cm ² , an adhesive layer, a veneer veneer or veneer decorative plywood layer, and a transparent surface layer. 2. The vinyl chloride resin layer has an average degree of polymerization of 60.
0 to 1300 vinyl chloride resin, 30 to 120 parts by weight of plasticizer and 50 to 200 per 100 parts by weight of the resin.
The flooring material for direct application according to claim 1, which is composed of a weight part of wood flour. 3. The direct-applying flooring material for a house according to claim 1, which is for concrete panels, concrete slabs or rough floors.