JP2662752B2 - Laying tiles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Conventionally, various laying tiles have been used on a double floor.
It is disclosed in Japanese Patent Application Publication No. 4 (1993) -1992, and forms an aggregate in which separated small panel pieces having legs at four corners are linked. In the present specification, a double floor means a floor panel in which units having legs and a top plate are connected on a floor base and a space is provided between the top plate and the floor base, and LLT is not necessarily bonded. It means tiles that are laid and used without the need for an agent.

[0003]

Further, when such flooring is used in an office, durability against ironing by a chair is particularly problematic. In the case where the above-mentioned conventional laying floor material is used for such a purpose, the floor material is deformed or swells.

[0004] Japanese Utility Model Laid-Open No. 2-36442 discloses, 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 weak against ironing of a chair or the like.

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

[0006]

According to a first aspect, the present invention provides a method for manufacturing a semiconductor device, comprising: 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. A floor tile is provided, wherein a lower weight imparting layer is formed, and a lower reinforcing layer and a property improving layer are laminated between the upper weight imparting layer and the lower weight imparting layer.

In a second aspect, the present invention provides the laying tile, wherein at least one of the transparent surface layer, the upper or lower reinforcing layer, the upper or lower weight imparting layer, or the property improving layer is an antistatic layer. Provide 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 part of a laying tile 11 according to a preferred embodiment of the present invention.

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

[0010] A pattern layer 2 is laminated immediately below the transparent surface layer 1. The pattern layer 2 is made of PVC or acrylic resin by a method such as transfer printing, screen printing, gravure printing, or the like on a glass nonwoven fabric or a vinyl sheet and the composite constituting the reinforcing layer described below.
It is obtained by forming an ink print layer of 0.05 to 0.30 mm such as a UV resin. The printing ink may be foamed by containing a foaming agent or the like.

The pattern layer is preferably made of a regular printed pattern, an irregular random pattern applied with a PVC paste ink, or another soft random pattern sheet.

In the present application, a fiber layer 3 constituting the upper reinforcing layer 5 is formed below 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, and a polyimide fiber, or an inorganic fiber such as a glass fiber, and is 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 liquid resin such as a PVC paste, SBR latex, liquid polyurethane resin, acrylic emulsion or the like is impregnated immediately below the fiber layer 3, and an impregnated layer 4 is formed. A known crosslinking agent or a reactive plasticizer may be appropriately used in 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, and is preferably calcium carbonate, talc,
A relatively large amount of a filler such as clay is filled in an amount of 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.
More preferably, a weight of 0.8 to 3 kg / m ² is suitable.

In the present invention, a lower weight imparting layer is formed below the upper weight imparting layer, 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.

As a preferred example, an upper weight-imparting layer, a 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 preferably has a PV of 0.1 to 1.0 mm.
The resin such as C paste contains little or no filler, or 100 parts by weight of the resin contains only 30 parts by weight or less of the filler.

The physical property improving layer is a central part of the laminate, which contributes to the improvement of residual dents and the prevention of electrification, and is at the central position 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 intermediate layer is desirably provided below the center AA of the total thickness of the tile of the present invention.
On the other hand, the upper reinforcing layer is desirably 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 preferably has a composition of 1 to 6 kg / m ^2, more preferably 1.5 to 5 kg / m ² .

An emboss 10 is provided on the back surface of the lower weight application layer, and this emboss is effective for preventing the obtained tiles from being displaced or slipping.

Thus, 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.
It is. The surface transparent layer may be appropriately provided with a mechanical emboss.

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

LLT of another preferred embodiment of the present invention
Then, each of the constituent layers of the above-described LLT of the present invention, 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 an antistatic layer.

When the transparent resin layer or the pattern layer is used as an antistatic layer, a nonionic activator, for example, a polyoxyethylene derivative, a fatty acid pentaerythritol (eg, Testat AL, manufactured by Kyoei Yushi Co., Ltd.) or a cationic activator, for example, 1
Quaternary amine salt, quaternary ammonium salt, pyridine derivative (for example, CS-1000, manufactured by Shin Nippon Rika Co., Ltd.), anionic activator such as alkyl sulfonate, ABS, alkyl sulfate ester salt, phosphate ester salt (for example, Resistat , Manufactured by Daiichi Kogyo Seiyaku Co., Ltd.).

When imparting antistatic performance to the upper and lower reinforcing layers, the upper and lower weight imparting layers, or the physical property improving layers, conductive carbon black (Ketjen black) is used in addition to the above-mentioned surfactants. , 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, a human body voltage of 1000 V or less, which could not be obtained with a conventional plastic flooring material, can be achieved.

FIG. 2 schematically shows a plan view of a part of the laying tile construction state of the present invention. On the joint (joint) 21 of the free access floor 20, the laying tile 22 of the present invention is arranged. In FIG. 2, broken line 21 ′
Is a joint 21 of the free access floor, and is a portion existing below the laying tile 22. Even if the laid tile joints 23 are arranged without being matched with the joints 21 of the free access floor, the tiles are adapted to the groundwork, and the unevenness of the groundwork can be absorbed and a favorable construction state can be secured.

For the method of producing the LLT of the present invention, for example, a lower weight imparting layer, a lower reinforcing layer, a property improving layer, an upper weight imparting layer, an upper reinforcing layer, a pattern layer, a transparent After each surface layer is pre-gelled, the layers are successively laminated and then gelled and integrated, or two or three layers as appropriate.
After the layers are divided and the pregels are laminated, the whole may be gelled and heated to be laminated and integrated.

[0031]

According to the present invention, the combination of the upper reinforcing layer and the lower reinforcing layer improves the dimensional stability, prevents warpage and warpage, and is strong against peeling.

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

In addition to the improvement of the residual dent, the physical property improving layer further improves the anti-warping property and the dimensional stability due to the synergistic effect of the combination with other layers.

In the LLT of the present invention, the laying performance (particularly improved by adopting the above-mentioned laminate structure)
Dimensional stability, shape stability, durability against ironing of a chair, etc.).

The improved antistatic performance can be obtained by forming at least one antistatic layer.

Since two reinforcing layers are provided, the LLT is well adapted to irregularities having a large gap between the steps, and the lower weight imparting layer absorbs the irregularities when the irregularities have a small gap between the steps. LLT absorbs everything and gives a smooth surface.

[0037]

The laying tile of the present invention is (a) layable and peelable, and can be easily constructed on a double floor;

(B) It has excellent dimensional stability and shape stability, and does not cause warping or joint bleeding during use; (c) has excellent load resistance and does not swell even when ironing a chair;

(D) By forming at least one antistatic layer, an antistatic property can be imparted to the LLT; (e) it has abrasion resistance and has fashionability (design);

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

[0041]

【Example】

Example 1 An upper weight imparting PVC paste of Formulation A of "Table 1" was applied on a peelable substrate to form a pregel, and then a PVC paste of Formulation B of "Table 1" was applied on a pregel sheet. A sheet having a printed pattern layer formed on a 50 g / m ² glass nonwoven fabric impregnated with latex was placed and impregnated to form a pregel. Further, on the printed pattern layer, "Table 1"
A transparent PVC paste is applied and heated and gelled at 220 ° C. to form a surface transparent layer and an upper weight imparting layer,
The reinforcing layer, the pattern layer, and the surface transparent layer were laminated and integrated.

Next, a lower weight imparting layer PVC paste similar to that of Formulation A in Table 1 was applied onto the peelable substrate, and 5
A glass nonwoven fabric of 0 g / m ² was placed, and then a non-foamed PVC paste (physical property improving layer) of Formulation D shown in “Table 1” was applied and impregnated. A laminate having the pattern layer was hot-press laminated at an appropriate temperature on the resulting pre-gelled sheet, and the lower layer was gelled, cooled, and cut into tiles each measuring 50 cm on a side. -9-

[0043]

Table 1 Formulation A Formulation B V. C PSH-10 60 P.E. V. C DVC-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 C Formulation D V. C43H60P. V. C PSH-10 60 90BX 40 PBMB5K 40 DOP 40 DOP 22 Stabilizer JF95K 1 Second plasticizer CS167 BZ47 2 Stabilizer AC309 4 Pigment 1.0

PSH-10 PVC (manufactured by Kane-buchi Chemical Industry) 103ZXA PVC (manufactured by Nippon Zeon) DVC-T PVC blend resin PBMB5K PVC (manufactured by Kane-buchi Chemical Industry) 43H PVC (manufactured by Zeon Corporation) 90BX PVC (manufactured by Mitsubishi Chemical) -10- NN # 200 Calcium carbonate (manufactured by Nitto Powder) G100 Calcium carbonate (manufactured by Sankyo) AC309 Ba / Zn stabilizer (manufactured by Asahi Denka) BZ47 Ba / Zn stabilizer (manufactured by Katsuta Chemical)

As a result, the thickness of each of the wear-resistant layers was 0.1 mm.
6 mm, printing layer and upper reinforcing layer 0.4 mm, impregnating layer 0.3 mm, upper weight imparting layer 0.7 mm, physical property improving layer 0.5 mm, lower weight imparting layer 1.5 including lower reinforcing layer
mm of the present invention LLT was obtained.

[0046]

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

[0047]

[Table 2]

Resistat 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 of 50 cm on a side to obtain a tile floor material. -11-

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

[0051]

[Table 3] Example 1 Example 2 Comparative Example Warpage 〇 Dimensional change in which warpage occurred 0.085 mm 0.080 mm 0.090 mm Joint-proof skid 〇 人 × Human body voltage (normal level / V) 1560 840 4200 〇 〇 × (bulging) Free access adaptability 〇 ◎ ×

In Table 3, the term “warping” refers to JIS A570.
According to the length change test by heating based on No. 5, after heating the sample, visually warp when cooled to a room temperature of 20 ° C. is a test for accelerating evaluation of warpage;

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

The joint resistance resistance test is a test for evaluating a thermal expansion coefficient based on JIS A5705 and a change in sample size over time (a thermal expansion coefficient is preferably 10 ^-4 or less);

The human body voltage is a test for actually measuring a charged voltage when a tester actually walks on a sample under a constant temperature and humidity condition of 20 ° C. and 40% in accordance with the Stroll method based on JIS L1021. (It is desirable that the charged voltage be 1000 V or less);

The chair ironing is performed by rotating a caster equipped with a 7.5 cm-diameter iron wheel at 25 rpm using a chair and leg tester manufactured by Yasuda Seiki and inverting the sample every 10 minutes to observe the degree of blistering of the sample. A test that ends when any sample begins to blister;

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

As is apparent from the above results, the tiles of Example 1 and Example 2 have excellent dimensional stability, do not warp and have no joints, and can be used comfortably only by laying them on the free access floor. A floor tile that can be obtained.

On the other hand, in the tile of the comparative example, the dimensional stability was inferior to those of the examples 1 and 2, and it was shown that the tile was very weak against ironing by a chair. Further, in Example 2, the antistatic effect of the pick foot was good at 840V. on the other hand,
In the comparative example, 4200 V static electricity is generated by the pick foot, and it is clear that the tile has a lower antistatic effect than the present invention.

As described above, according to the present invention, warpage, joint squealing,
The present invention provides a floor tile suitable for covering a free access floor without swelling caused by ironing by a chair, and a durable flooring material suitable for a free access floor and an OA floor was obtained for the first time.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a part of a laying tile according to the present invention.

FIG. 2 is a schematic plan view showing a construction state of a laying tile according to 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 an LLT of the present invention. .

Claims (2)

(57) [Claims] 1. A pattern layer under a transparent surface layer, an upper reinforcing layer under the pattern layer, an upper weight-imparting layer and a lower weight-imparting layer formed below the reinforcing layer. A laid floor tile comprising a lower reinforcing layer and a physical property improving layer laminated between 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 property improving layer is antistatic.