JPH0643748B2 - Embossed flooring - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an embossed flooring material having an appearance and a texture as if it were a ceramic and having heat resistance.

[Conventional technology and its problems]

BACKGROUND ART Conventionally, a synthetic resin flooring material composed of a synthetic resin base material layer and a printed layer has been widely used as a tile or a long product. However, there is a limit to the appearance and texture of ceramics by printing alone, and a material that is satisfactory in both texture and design has not yet been provided as a ceramic flooring material. In addition, these synthetic resin floor materials typified by PVC have poor heat resistance,
Immediately after dropping a cigarette or the like on the floor, the spot usually left an unrepairable burn or scratch.

Therefore, formation of various surface layers has been studied in order to improve such defects, but it is extremely difficult to improve cigarette resistance without losing the design effect as a flooring material, It has been a long-standing challenge in Japan.

[Problems to be Solved by the Invention]

The object of the present invention is different in color tone from the embossed depressions and the projections of the peripheral portion of the synthetic resin flooring material, as if they were valley-dyed embossed, or equivalent to joints such as bricks. The purpose of the present invention is to provide a synthetic resin flooring material that has such a texture, has a unique design effect similar to glazeing pottery, and exhibits excellent cigarette resistance in the entire surface layer.

〔Constitution〕

The present invention relates to a synthetic resin flooring material comprising a synthetic resin material layer, a printing layer and a surface layer, wherein the surface layer is formed from synthetic resin and heat resistant transparent particles, and the flooring material is a partial layer. The present invention relates to an embossed flooring material, wherein the embossed flooring material has a concave portion embossed therein, and the concave portion penetrates the printed layer and is buried in the base material layer.

The degree of the unevenness is preferably such that the convex portion corresponds to a so-called tile and the concave portion corresponds to a joint. The recess is usually 1
It has a width of about 8 mm or more and a depth of 0.2 to 1
It is about mm.

The heat-resistant transparent particles used in the present invention preferably have a particle size of 50 to 1000 µ, preferably 100 to 500 µ, and particularly preferably 200 to 400 µ. When the size of the particles is too large, when the particles are glass particles, the floor material cannot be cut smoothly when it is cut by a cutter for the convenience of construction, which causes inconvenience in construction. Further, if the size of the particles is too small, it becomes difficult to maintain heat resistance. The shape of the particles may be any shape such as spherical, elliptical, dice, or irregular.

Since the heat-resistant transparent particles are transparent, the design effect of the lower print layer is not lost. When the heat-resistant transparent particles are colored transparently, a new design effect can be obtained in combination with the pattern of the printing layer.

As heat-resistant transparent particles, glass particles are most preferred,
Any transparent synthetic resin can be used as long as it is more heat resistant than the base resin used. For example, acrylic particles such as polymethylmethacrylate and polyethylmethacrylate, crosslinked polystyrene particles and the like can be used.

When glass particles are used, it is preferable to carry out a conventional surface treatment in order to improve the adhesion between the glass and the resin. As a surface treatment agent, silane,
Known surface treatment agents such as alkyl titanate can be used as appropriate.

Heat-resistant transparent particles, it is usually preferable to configure the surface layer using a small amount of resin, as a typical method of forming the surface layer, (1) on the printing layer, heat-resistant transparent particles and A method of applying a mixture with a resin (2) A method of thinly applying a resin layer on a printing layer, sprinkling heat-resistant transparent particles while not drying, and removing excess particles by applying vibration (3) Examples include the method of forming a thinner resin layer on the surface of (2) above.

As the synthetic resin used for fixing the heat-resistant transparent particles, any synthetic resin that forms a transparent synthetic resin layer can be used. For example, a liquid material such as PVC paste, epoxy resin, polyester resin, or polyurethane resin, which is primarily solidified by heat or light, is preferable. Above all, a photocurable resin, particularly an ultraviolet curable resin and a thermosetting urethane resin are preferable. In particular, when glass particles and resin having particularly high heat resistance are used in combination, heat resistance can be further improved.

As the photo-curable resin, for example, December 10, 1983 (Corporation)
71st "Plastic Painting and Printing Handbook" published by Sogo Gijutsu
Various resins as described on pages 80 to 80 can be used. In addition, JP-A-51-10628 and JP-A-54
The UV-curable resin used in No. 139223 or the like can be used.

Next, specific examples of the photo-curable resin include diethylene glycol dimethacrylate, trimethylolpropane trimethacrylate, 1,4-butane diacrylate, neopentyl glycol diacrylate, and acrylic-urethane type compositions. In the case of a scale, an acrylic-urethane type composition is preferable.

The synthetic resin substrate layer of the present invention comprises a synthetic resin and a synthetic resin composition in which an additive is added to the synthetic resin if necessary, and a fiber reinforcing material is further added to the synthetic resin composition in order to enhance strength and dimensional stability. Used in combination with the composition. When the reinforcing material made of fiber is not present, it can be printed directly on the synthetic resin substrate layer, but when the reinforcing material made of fiber is present, at least transparent particles may be embedded in the upper layer of the reinforcing material. It is necessary to provide a synthetic resin layer that can be used. The synthetic resin layer in which the transparent particles are embedded may be a single colored layer, but by forming a plurality of layers colored in different colors, it is possible to obtain a more complicated hue by embedding the particles.

An example of a typical structure of the flooring material of the present invention will be described with reference to the drawings.

The backing layer 1 made of PVC is provided with a glass nonwoven fabric layer 2 impregnated with a PVC paste sol and cured on the upper surface, and a printing layer 8 made of a synthetic resin layer 3 having a printed pattern 5 is provided thereon, and glass particles 6 are included on the upper surface. The surface layer 4 coated with the ultraviolet curable coating material 7 is formed into tiles. Although the glass particles 6 are illustrated as one layer, it is a matter of course that the glass particles 6 may be a layer in which a plurality of glass particles 6 are overlapped.

An example of a method for producing such a floor covering is 30 to 50
A backing layer 1 and a glass fiber nonwoven fabric layer 2 are formed by thickly applying a PVC paste sol to a glass fiber nonwoven fabric of g / m ² . When the coating thickness is reduced, the backing layer 1 made of a PVC sheet may be separately laminated.

Then, the PVC paste sol is applied again on the glass fiber nonwoven fabric to form the synthetic resin layer 3 to prevent the glass fiber nonwoven fabric from fluffing, and then the pattern 5 is printed by means such as transfer printing or screen printing. Instead of this, a preprinted PVC film may be laminated. In addition, the pattern of the printed layer may become unclear in relation to the color tone of the synthetic resin layer thereunder.
In such a case, the presence of the printed layer can be emphasized by applying solid printing between the printed layer and the synthetic resin layer to block the tint of the synthetic resin layer, and the contrast with the embossed recesses can be emphasized. Can also be sharpened. Further, a transparent synthetic resin layer may be arranged on or under the printed layer or both of them to provide a floor material having a rich depth and a three-dimensional effect. The synthetic resin layer 3 can be colored. or,
If this synthetic resin layer is formed of two different colored layers 3 and 3'as shown in FIG. 2, for example, the embossed portion will have a more complicated color.

Synthetic resin paint 7 is applied on the printed layer 8 to a thickness of 100 to 300 μ,
Glass particles are sprayed over the entire surface, filled in a flat surface, lightly pressure-bonded to fix the particles, and a UV-curable coating material 9 is thinly applied on this to form the heat-resistant layer 4. ,
UV cure.

The laminate thus formed is heated to a temperature at which the fixing layer exhibits a desired fluid state, and embossed to form an embossed recess. A known device such as an embossing roll, a flat plate press, or a rolling press can be used for embossing. At this time, the particles in the recesses are embedded in the resin layer 3, the printing at the embedding point is destroyed, the particles are mixed in the resin layer 3 of the base and disappear, and a part of the synthetic resin 3 oozes out to the surface, and a normal valley is formed. Without embossing the dye, the embossed recess and, in some cases, its vicinity,
The pattern and color tone are different from those of the other parts, and the effect is the same as or more than that of the Tani Dye embossed, and moreover, the texture and design effect like a ceramic tile can be obtained. An enlarged view of this state is shown in FIG. In the figure, 10 is an embossed concave portion, 11 is a convex portion, and 9 is a top coating material.

The overcoat is not essential, but it is preferable to apply it because the ceramic-like texture becomes stronger. This paint may be used before or after the formation of the embossed recess. As the overcoat paint, a curable type such as a photocurable type is preferable from the viewpoint of heat resistance, but a normal transparent synthetic resin can be used when heat resistance is not required so much.

Further, the method for forming the embossed recesses in the above-mentioned laminated body is not limited to the method described above, and for example, when a paste sol is used as the resin on the base material, the particles are directly dispersed on the paste sol and directly A method may also be used in which the paste sol is heated and solidified after forming the embossed recesses by pressing.

Polyvinyl chloride and its copolymers, polyolefin resins, etc. are used as the resin used in the production of the base material layer of the present invention, DOP, BBP, etc. are used as the plasticizer to be added thereto, and carbonic acid is used as the filler. Examples are calcium, silica and mica. As the fiber reinforcing material, a woven fabric made of various inorganic fibers including glass fiber,
Examples include non-woven fabrics and woven or non-woven fabrics made of organic fibers. However, these are merely examples, and the present invention is not limited thereto.

〔Example〕

Example 1 A backing of a glass fiber non-woven fabric (weight per unit area of 50 g / m ² ) was coated with a PVC paste sol for backing so that the thickness after drying was 1.0 m / m, solidified by heating, and further PVC paste was applied on this. The sol is applied so that the thickness after drying becomes 0.2 m / m, and dried to form a substrate with a smooth surface. Printing is performed on this substrate by transfer printing method, and PVC for fixing is applied on this printing layer. 0.5m / m of paste sol is applied, and acrylic resin particles (average particle size 0.3m / m) are sprayed on the entire surface (spraying amount 800g / m ² ).
Then, it was lightly pressed and then heated to 160 ° C. to gel the fixing paste and fix the acrylic resin particles. Next, the surface layer is heated and pressed at 160 ° C to form embossed depressions, at the same time the paste is completely gelled, and UV-curable paint is applied thinly (0.2 Kg / m ² ) on the entire surface and irradiated with ultraviolet rays. The coating material was cured to obtain the flooring material of the present invention.

Example 2 A PVC paste sol for backing is applied to the back surface of a glass fiber non-woven fabric (weight per unit area: 50 g / m ² ) so that the thickness after drying is 1.2 m / m, and heated to cause gelation. On the other hand, the thickness of the colored PVC paste is also applied to the surface side of the glass fiber nonwoven fabric.
It was applied so as to have a thickness of 0.4 to 0.5 mm, and at the same time as gelling by heating, the surface was finished to be smooth to obtain a substrate. A print pattern is applied to this surface by a transfer printing method, and an acrylic-urethane photo-curable resin and a UV-crosslinking paint consisting of a photoinitiator (benzophenone) are applied to this print layer at a thickness of 0.1 m / m, Sprinkle glass particles (particle size 0.3m / m) on the entire surface (spraying amount 600g /
m ² ), and after gently pressing, ultraviolet rays were irradiated to fix the particles. This sheet was heated to 160 to 170 ° C. with a heater and passed through an embossing roll for embossing.

In the depressions of the laminate, the PVC sol used under the printed layer bleeded through the surface between the particles, and the desired valley dyeing was formed. In this state, the surface was again coated with the ultraviolet-ray-crosslinking resin coating material and cured to obtain a product.

Example 3 A printed layer was formed in the same manner as in Example 2, 0.1 mm of an ultraviolet curable resin paint was applied, and then particles of crosslinked polystyrene instead of glass particles were scattered and filled on the entire surface, and fixed by irradiation with ultraviolet rays. I'm sorry.

By heating with a heater and embossing in the same manner as the glass particles, valley dyeing and surface texture that were almost indistinguishable from crow particles were obtained. However, the glass particles are slightly superior in terms of cigarette resistance and heat resistance.

〔effect〕

The present invention has a structure similar to that of valley-dyeing embossing without the use of valley-dyeing embossing due to the structure as described above, and in addition, the concave portion and, in some cases, the adjacent portion thereof are buried with the heat-resistant transparent particles. By virtue of this, the color tone of the resin layer is strong, so that the color tone is different from that of the convex portions, and it is possible to obtain a unique design effect just like applying a glaze to a baked product.

When a plurality of resin layers having different color tones, for example, a resin layer composed of two layers 3 and 3'in FIG. 2, is used,
During embossing, the heat-resistant transparent particles are difficult to penetrate into the resin layer, so the 3,3 'resin in the recesses and the vicinity thereof mix, and part of the resin exudes above the heat-resistant transparent particles. The color tone of '′ is strongly mixed and appears to be raised on the surface, and the convex portion exhibits a complicated and unique design effect in which the printed pattern is visible through the transparent particles.

Further, the present invention, because there is a dense layer of heat-resistant transparent particles on the surface, the heat resistance of the surface is significantly improved, softening and perforation phenomenon does not easily occur even if the cigarette is dropped on the surface, and the smearing of the cigarette The degree has no effect.

Furthermore, when a heat-resistant resin is used as a coating material for heat-resistant transparent particles, not only heat resistance but also conventional PV
Compared with the C-based flooring material, it shows stain resistance and chemical resistance, and further, the gloss in the recesses and / or in the vicinity thereof increases.

In addition, the flooring material of the present invention has not only unevenness due to embossing on the surface but also fine unevenness due to the heat-resistant transparent particles, so that it also exhibits the effect of preventing slippage.

[Brief description of drawings]

1 and 2 are sectional views showing an example of the flooring material of the present invention.

Claims (1)

[Claims] 1. A synthetic resin flooring material comprising a synthetic resin base material layer, a printing layer and a surface layer, wherein the surface layer is made of synthetic resin and heat resistant transparent particles. Has a partially embossed concave portion, and the concave portion has transparent particles penetrating the printing layer and embedded in the base material layer.