JPH05331996A - Bedding tile - Google Patents

Abstract

PURPOSE:To make it possible to put and bed putting and bedding tiles even on an OA free access floor, to have size and form stability, to have durability against hazing of chairs, etc., and to obtain the putting and bedding tiles having excellent charged prevention performance. CONSTITUTION:A putting and bedding tile 11 has a pattern layer 2 coating the surface thereof with a clear surface layer, an upper reinforced layer 5 having a woven fabric or nonwoven fabric under the pattern layer is laminated, and an upper weight giving layer 6 and a lower weight giving layer 9 are formed under the reinforced layer. A lower reinforced layer 8 having the woven fabric or nonwoven fabric and a physical property improving layer 7 are laminated between the upper weight giving layer 6 and lower weight giving layer 9. At least one layer among the clear surface layer, upper and lower reinforced layers, upper and lower weight giving layers or physical property improving layer is a charged prevention layer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laid tile (hereinafter referred to as LLT) which is excellent in dimensional and shape stability and durability, and particularly in durability against ironing of a chair and which can be used on a double floor.
Called)).

[0002]

2. Description of the Related Art Conventionally, various floor tiles have been used on a double floor.
It is disclosed in Japanese Patent Publication No. 4) and forms an assembly in which separated small panel pieces having legs at four corners are serially linked. In the present specification, the double floor means a floor panel in which a unit having a leg portion and a top plate is connected on a floor base and a space is provided between the top plate and the floor base, and LLT is not necessarily adhered. It means tiles that are used as a padding that does not require the use of agents.

[0003]

Further, when such a flooring material is used in an office, durability against ironing by a chair becomes a particular problem. When the conventional floor coverings such as those mentioned above are used for such an application, the flooring is deformed or swollen.

In Japanese Utility Model Laid-Open No. 23436/1990, in particular,
Although a synthetic resin tile in which two layers of a reinforcing material impregnated with a foaming resin are embedded is disclosed, this configuration has a drawback that it is inferior in design and is weak against ironing of a chair or the like.

Therefore, an object of the present invention is to solve the above-mentioned problems and provide an LLT which is excellent in durability, particularly in dimensional stability and shape stability against ironing by a chair and the like, and which is rich in design. That is. Further, another object of the present invention is to provide a laid tile having excellent antistatic performance.

[0006]

In a first aspect of the present invention, the present invention provides a pattern layer under a transparent surface layer, an upper reinforcing layer under the pattern layer, and an upper weight imparting layer under the reinforcing layer. Provided is a floor tile in which a lower weight imparting layer is formed, and a lower reinforcing layer and a physical property improving layer are laminated between the upper weight imparting layer and the lower weight imparting layer.

In a second aspect of the present invention, in the above-mentioned laid floor tile, at least one of the transparent surface layer, the upper or lower reinforcing layer, the upper or lower weight imparting layer or the physical property improving layer is an antistatic layer. Serve tiles.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described more specifically with reference to the drawings. FIG. 1 is a schematic cross-sectional view of a portion of a floor tile 11 of a preferred embodiment of the present invention.

1 is a transparent surface layer, which is polyvinyl chloride (PV
C) Paste or cross-linked PVC paste is suitable, and polyurethane resin can also be used, and the thickness is 0.1 to 1.0 m.
m -3- is preferable. The transparent resin layer is durable during walking of the final product,
Abrasion resistance, chemical resistance, cigarette resistance, and stain resistance can be imparted.

A pattern layer 2 is laminated immediately below the transparent surface layer 1. The pattern layer 2 is made of a non-woven fabric of glass or a vinyl sheet which constitutes the following reinforcing layer, or a composite of the same by transfer printing, screen printing, gravure printing or the like, using PVC or acrylic resin,
It is obtained by forming an ink print layer of 0.05 to 0.30 mm such as UV resin. The printing ink may contain a foaming agent or the like for foaming.

In addition to the regular printed pattern, the pattern layer is preferably an irregular random pattern provided with a PVC paste ink, or another soft random pattern sheet.

In the present application, the fiber layer 3 constituting the upper reinforcing layer 5 is formed under the pattern layer 2. The fiber layer 3 is a woven or non-woven fabric made of an organic fiber such as a polyester fiber, a polyamide fiber, a vinylon fiber or a polyimide fiber, or an inorganic fiber such as a glass fiber, preferably 10 to 100 g / m ² . Incidentally, the thickness of the fiber layer is 0.1 to 1.0 mm.

In order to form the upper reinforcing layer 5, a resin such as PVC paste, SBR latex, liquid polyurethane resin or acrylic emulsion is impregnated directly under the fiber layer 3 and the impregnation layer 4 is formed. A publicly known cross-linking agent or a reactive plasticizer may be appropriately used for these liquid resins to make the upper reinforcing layer have an appropriate hardness.

In the upper reinforcing layer, a film can be appropriately laminated on the fiber layer. -Four-

An upper weight imparting layer 6 is formed below the upper reinforcing layer 5. The upper weight imparting layer is a layer for imparting its own weight to the LLT of the present invention, preferably calcium carbonate, talc,
A relatively large amount of a filler such as clay is 100 to 350 parts with respect to 100 parts by weight of a thermoplastic resin such as PVC. The upper weight imparting layer is preferably 0.5 to 5 kg / m ^2.
A weight of 0.8 to 3 kg / m ² is more preferable.

In the present invention, the lower weight imparting layer is formed under the upper weight imparting layer, and the lower reinforcing layer and the physical property improving layer are laminated between the upper weight imparting layer and the lower weight imparting layer.

Now, as a preferred example, an upper weight imparting layer, a physical property improving layer, a lower reinforcing layer and a lower weight imparting layer are sequentially laminated from the top.

A physical property improving layer 7 is formed below the upper weight layer 6. The physical property improving layer is preferably 0.1 to 1.0 mm and PV
The resin such as C paste contains little or no filler, or 100 parts by weight of the resin contains 30 parts by weight or less of the filler.

The physical property improving layer contributes to the improvement of the residual dent property and the prevention of static electricity at the central part of the laminate, and is also at the center of various physical property improvements.

A fiber intermediate layer 8 is laminated immediately below the physical property improving layer 7. The fiber intermediate layer is a layer obtained by impregnating a synthetic fiber such as polyester of 10 to 100 g / m ² or glass fiber with a resin.

The fiber interlayer is preferably provided below the center AA of the total thickness of the floor tile of the present invention.
On the other hand, it is desirable that the upper reinforcing layer be provided above AA. A lower weight imparting layer 9 is formed below the fiber intermediate layer.

The lower weight imparting layer 9 may have the same composition as the upper weight imparting layer, but the amount is preferably 1 to 6 kg / m ^{2 and} more preferably 1.5 to 5 kg / m ² .

An embossing 10 is applied to the back surface of the lower weight imparting layer, and this embossing is effective for preventing displacement and slippage of the obtained laid tile.

In this way, the present invention LLT 11 is obtained. The LLT is preferably a square having a side of 30 to 100 cm, a total thickness of 3 to 10 mm, and a total weight of ^{2 to} 7 kg / m ^2.
Is. Mechanical embossing may be appropriately applied to the surface transparent layer.

In the LLT of the present invention, a woven or non-woven fiber layer may be further laminated between the upper weight imparting layer and the lower weight imparting layer.

LLT of another preferred embodiment of the present invention
Then, each of the constituent layers of the LLT of the present invention described above, that is, at least one of the transparent surface layer, the upper or lower reinforcing layer, the upper or lower weight imparting layer, or the physical property improving layer is used as the antistatic layer.

When the transparent resin layer or the pattern layer is used as the antistatic layer, a nonionic activator such as a polyoxyethylene derivative, a fatty acid pentaerythritol (eg, Testat AL, manufactured by Kyoei Yushi Co., Ltd.) or a cationic activator such as 1
Amine salts, quaternary ammonium salts, viridine derivatives (eg CS-1000, manufactured by Shin Nippon Rika Co., Ltd.), anion activators such as alkyl sulfonates, ABS, alkyl sulfate ester salts, phosphate ester salts (eg resistit). , Manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) may be added.

When imparting antistatic properties to the upper and lower reinforcing layers, the upper and lower weight imparting layers, or the physical property improving layer, in addition to the above-mentioned surfactant, conductive carbon black (Ketjen Black) is used. , Carbon fiber, metal powder, metal fiber, and other conductive fibers may be added. In particular, by adding an antistatic agent or a conductive substance in the physical property improving layer, a remarkable antistatic effect is obtained,
For the first time, it was possible to achieve a human body voltage of 1000 V or less, which was unattainable with conventional plastic floor coverings.

FIG. 2 schematically shows a plan view of a part of a state where the floor tiles of the present invention are installed. The floor tile 22 of the present invention is arranged on the joint (joint) 21 of the free access floor 20. In Fig. 2, broken line 21 '
Is a joint 21 of the free access floor, which is a portion existing under the standing tile 22. Even if the tiles 23 of the floor tiles are arranged so as not to coincide with the joints 21 of the free access floor, the tiles will fit into the ground and absorb the unevenness of the ground to secure a good construction condition.

The method for producing the LLT of the present invention is, for example, a releasable substrate such as a release cloth, and a lower weight imparting layer, a lower reinforcing layer, a physical property improving layer, an upper weight imparting layer, an upper reinforcing layer, a pattern layer, and a transparent layer. The surface layers are each pre-gelled and then sequentially laminated and then gelled and integrated, or if appropriate, two layers or three layers.
The layers may be divided into layers, and after the pregel is laminated, the whole may be gelled and heated to be laminated and integrated.

[0031]

The combination of the upper reinforcing layer and the lower reinforcing layer improves the dimensional stability, prevents warping and rising, and resists peeling against ironing.

Since the upper weight imparting layer and the lower weight imparting layer are arranged one above the other to sandwich the physical property improving layer and the lower reinforcing layer, dimensional stability, warpage prevention, and slip resistance can be obtained.

In addition to the improvement of the residual denting property by the physical property improving layer, the synergistic effect of the combination with other layers can further improve the warpage preventing property and the dimensional stability.

In the LLT of the present invention, the laid-down performance (that is,
Dimensional stability, shape stability, durability against chair ironing, etc.) can be obtained.

By forming at least one antistatic layer, improved antistatic performance can be obtained.

Since it has two reinforcing layers, the LLT is well adapted to the unevenness having a large step gap, and the unevenness having a small step gap absorbs the unevenness by the lower weight imparting layer. The LLT absorbs everything and gives a smooth surface.

[0037]

The floor tile of the present invention (a) can be laid and peeled up and can be easily installed on a double floor;

(B) Dimensional stability and shape stability are excellent, warpage and joint clearance during use do not occur; (c) Load resistance is excellent, and swelling does not occur even when the chair is ironed;

(D) By forming at least one antistatic layer, antistatic performance can be imparted to the LLT; (e) Abrasion resistance and fashionability (designability);

(F) Even if there is unevenness, the LLT of the present invention absorbs it and has no effect on the surface during use. -8-

[0041]

【Example】

Example 1 An upper weight-providing PVC paste of Formula A of Table 1 was applied on a peelable substrate to form a pregel, and then a PVC paste of Formula B of Formula 1 was applied on a pregel sheet. A sheet having a printed pattern layer formed thereon was placed on a 50 g / m ² glass non-woven fabric impregnated with latex, and impregnated into a gel. Furthermore, "Table 1" formulation C on the printed pattern layer
Of transparent PVC paste, and heated to gel at 220 ° C. to form a surface transparent layer and an upper weight imparting layer,
The reinforcing layer, the pattern layer, and the transparent surface layer were laminated and integrated.

Next, a PVC paste for the lower weight-imparting layer similar to the formulation A in "Table 1" was applied on the peelable substrate, and then 5 onto the same.
A glass non-woven fabric of 0 g / m ² was placed, and then a non-foamed PVC paste (physical property-improving layer) of formulation D in “Table 1” was applied and impregnated thereon. On the latter obtained pregelled sheet, the laminate having the pattern layer was hot-press laminated at an appropriate temperature, the lower layer was gelated and then cooled, and cut into tiles with a side of 50 cm. -9-

[0043]

Table 1 Formulation A Formulation B P. V. CPSH-10 60 P.I. V. CDVC-T 60 103ZXA 40 PBMB5K 40 DOP 77 DOP 77 Filler NN # 200 100 Filler NN # 200 45 G100 100 G100 45 Stabilizer AC309 1.5 Stabilizer AC309 1.5 Pigment 1.0 Pigment 1.0 Blend C Formulation D P. V. C43H60P. V. CPSH-10 60 90BX 40 PBMB5K 40 DOP 40 DOP 22 Stabilizer JF95K 1 Second Plasticizer CS167 7 BZ47 2 Stabilizer AC3094 Pigment 1.0

PSH-10 PVC (manufactured by Kanegafuchi Chemical Industry) 103ZXA PVC (manufactured by Zeon Corporation) DVC-T PVC blend resin PBMB5K PVC (manufactured by Kanegafuchi Chemical Industry) 43H PVC (manufactured by Nippon Zeon) 90BX PVC (manufactured by Mitsubishi Kasei) -10- NN # 200 Calcium Carbonate (Nitto Flour Milling) G100 Calcium Carbonate (Sankyo Flour Milling) AC309 Ba / Zn Stabilizer (Asahi Denka) BZ47 Ba / Zn Stabilizer (Katsuda Kako)

As a result, the respective thicknesses of the wear resistant layer 0.
6 mm, printed layer and upper reinforcing layer 0.4 mm, impregnation layer 0.3 mm, upper weight imparting layer 0.7 mm, physical property improving layer 0.5 mm, lower weight imparting layer including lower reinforcing layer 1.5
mm of the present invention LLT was obtained.

[0046]

Example 2 The composition of the physical property-improving layer of Example 1 was changed to the composition E in "Table 2" to obtain an antistatic LLT.

[0047]

[Table 2]

Resist 212 Anionic antistatic agent (Daiichi Kogyo Seiyaku)

[0049]

Comparative Example A sheet floor material consisting of only a transparent surface layer, a pattern layer, an upper reinforcing layer and an upper weight imparting layer was cut into a square having a side of 50 cm to obtain a tiled floor material. -11-

Various tests were conducted using the tiles obtained in Examples 1 and 2 and Comparative Example to compare their performances. The results are shown in "Table 3".

[0051]

Table 3 Example 1 Example 2 Comparative example Warp 〇 〇 Initiation occurred Dimensional change 0.085 mm 0.080 mm 0.090 mm Joint resistance ski 〇 〇 × Human body voltage (constant foot / V) 1560 840 4200 Ishigo Ironing 〇 〇 × (Bulging) Free access adaptability 〇 ◎ ×

In Table 3, "warp" means JIS A570.
According to the length change test by heating based on 5, the test is a test for accelerating and evaluating the warpage by visually judging the warp when the sample is heated and then cooled to room temperature of 20 ° C .;

The dimensional change is a length change test by heating based on JIS A5705 (however, the sample is 3
Measured after cutting into 0.3 cm square. The measured values are shown in the table);

The joint resistance proof is a test in which the thermal expansion coefficient measurement based on JIS A5705 and the change with time of sample size are evaluated together (the thermal expansion coefficient is preferably 10 ^-4 or less);

The human body electrification voltage is a test for measuring the electrification voltage when the tester actually walks on the sample under the conditions of 20 ° C. and 40% constant temperature and humidity according to the Stroll method based on JIS L1021. (It is desirable that the charging voltage be 1000V or less); -12-

With the chair ironing, a caster equipped with an iron wheel having a diameter of 7.5 cm is rotated at 25 rpm using a chair leg tester manufactured by Yasuda Seiki Co., and it is inverted every 10 minutes to observe the degree of swelling of the sample. It is a test that ends when any sample begins to swell;

The free access adaptability is the adaptability to the free access floor obtained from the comprehensive evaluation of the above test results.

As is clear from the above results, the tiles of Example 1 and Example 2 have excellent dimensional stability, no warpage and no joint gap, and are particularly comfortable to use by laying them on a free access floor. A floor tile that can be obtained.

On the other hand, the dimensional stability of the tile of Comparative Example was inferior to that of Examples 1 and 2, and it was shown that the tile was very weak against ironing by a chair. Furthermore, in Example 2, the antistatic effect on the slippery feet was good at 840V. on the other hand,
In the comparative example, the static electricity of 4200 V is generated by the slippery feet, and it is clear that the tile is inferior to the antistatic effect in the present invention.

As described above, according to the present invention, the warp, the joint gap,
It provides a floor tile that is optimal for covering free access floors without swelling by chair ironing, and was the first to obtain durable flooring suitable for free access floors and OA floors.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing a part of a floor tile of the present invention.

FIG. 2 is a schematic plan view showing a construction state of a floor tile of the present invention. -13-

[Explanation of symbols]

1 is a transparent surface layer, 2 is a pattern layer, 5 is an upper reinforcing layer, 6 is an upper weight imparting layer, 7 is a physical property improving layer, 8 is a lower reinforcing layer, 9 is a lower weight imparting layer, and 11 is the present invention LLT. ..

Claims (2)

[Claims] 1. A transparent surface layer, a pattern layer, an upper reinforcing layer below the pattern layer, an upper weight imparting layer and a lower weight imparting layer formed under the reinforcing layer, and the upper weight imparting layer. A floor laying floor tile having a lower reinforcing layer and a physical property improving layer laminated between the lower weight imparting layers. 2. The tile according to claim 1, wherein at least one of the transparent surface layer, the upper or lower reinforcing layer, the upper or lower weight imparting layer and the physical property improving layer is antistatic.