JP2001301097A - Round stone-like decorative material and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a round stone-like decorative material consisting of a thermoplastic resin or the like, having a round stone pattern with a natural feeling, not losing the pattern even by abrasion or the like and capable of being manufactured in an extremely easy manner. SOLUTION: Round stone-like pattern chips, which consist of a thermoplastic resin and of which the deformation recovery ratio is different at the melting temperature of a base material layer consisting of a thermoplastic resin, are provided in the base material so as to be exposed to the surface of the base material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cobblestone decorative material characterized in that cobblestone-like granules are exposed on the surface.

[0002]

2. Description of the Related Art Conventionally, as a decorative material utilizing the unique aesthetics exhibited by natural boulders, a boulder pattern is printed on the surface of a thermoplastic resin plate made of polyvinyl chloride resin or the like by various printing methods.
Alternatively, a cobblestone-like decorative material has been provided in which a preprinted sheet is laminated, and further an embossing synchronized with the cobblestone pattern is provided.

Further, for the purpose of further improving the natural texture of natural cobblestones and the like, there are provided a backing material and a large number of cobblestone-like particles made of a thermoplastic resin adhered to the backing material via an adhesive. There is also provided a cobblestone-like decorative material or the like made of a transparent filler that fills gaps between particles, the upper end of the particles protruding from the surface of the filler, and the surface formed in an uneven shape. (See Japanese Utility Model Application Hei 4-55910)

[0004]

However, the former cobblestone-like decorative material has an advantage that a cobblestone-shaped decorative material having a natural texture can be obtained relatively easily. However, when used as a floor tile or the like, there is a problem that the surface is worn by walking or the like, and the applied printing or the like is easily lost. In the former decorative material, in order to impart abrasion resistance, an ultraviolet curable resin layer or a transparent film layer made of a synthetic resin such as a polyvinyl chloride resin or a polyolefin resin is provided on the surface of the decorative material. But there was a limit.

[0005] The latter is advantageous in that it has a natural texture and that the applied cobblestone pattern does not disappear due to abrasion. However, application of a paste resin, dispersion of cobblestone-like particles, and further heating are required. Fixing the particles,
It is necessary to apply paste resin on the surface again,
The manufacturing method was complicated. In addition, special equipment is required for spraying the cobblestone-like particles, and high technology is required for the spraying. Therefore, further improvement has been desired.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a cobblestone-like decorative material for solving the above problems and a method for producing the same, comprising a thermoplastic resin or the like, It can be easily manufactured in composition tiles and various sheets, etc., has a cobblestone pattern with a natural texture, does not disappear even by abrasion, etc., compared to conventional cobblestone decorative materials It is very easy to manufacture, and it is made of a thermoplastic resin on the surface of a base material layer made of a thermoplastic resin, and it is possible to expose cobblestone-like pattern chips having different deformation recovery rates in the base material layer. The present invention provides a cobblestone-shaped decorative material. The details will be described below.

According to the first aspect of the present invention, there is provided a decorative material having irregularities formed on its surface by exposing a pattern chip made of a thermoplastic resin on the surface of a base material layer made of a thermoplastic resin. The cobblestone-like decorative material, wherein the deformation recovery rate of the pattern chip at 200 ° C. is 40 to 90%, and the deformation recovery rate of the base layer at the same temperature is at least 20% smaller than the pattern chip deformation recovery rate. To provide.

[0008] The invention according to claim 2 provides a cobblestone-like decorative material characterized in that, in addition to the features of claim 1, the base material layer is constituted by a sheet in which two or more layers are laminated.

The invention according to claim 3 is characterized in that, in addition to the features of claim 1 or 2, a cobblestone-like decorative material is characterized in that an inorganic and / or organic fiber sheet is incorporated in the base material layer or provided on the back surface. Is provided.

According to a fourth aspect of the present invention, in addition to the features of the third aspect, the inorganic and / or organic fiber sheet is made of at least one kind of inorganic fibers of glass, carbon, and metal and / or pulp, cotton, rayon, and polypropylene. The present invention provides a cobblestone-like decorative material characterized by being a woven fabric, a nonwoven fabric, or a knitted fabric made of at least one kind of organic fibers.

According to a fifth aspect of the present invention, in addition to the features of the first to fourth aspects, the pattern chips are a mixture of small pattern chips having a particle diameter of 0.5 to 3 mm and large pattern chips having a particle diameter of 5 to 150 mm. And a cobblestone-like decorative material.

According to a sixth aspect of the present invention, in addition to the features of the fifth aspect, the weight ratio between the small pattern chip and the large pattern chip is 2: 8.
The present invention provides a cobblestone-like decorative material characterized by being mixed at a ratio of:

According to a seventh aspect of the present invention, in addition to the features of the first to sixth aspects, the thermoplastic resin constituting the base material layer is a polyvinyl chloride resin and / or a vinyl chloride-vinyl acetate copolymer resin, It is another object of the present invention to provide a cobblestone-like decorative material, wherein the thermoplastic resin forming the pattern chip is a polyvinyl chloride resin and / or a vinyl chloride-vinyl acetate copolymer resin.

The invention according to claim 8 is characterized in that, in addition to the features of claim 7, the content of the polyvinyl chloride resin and / or the vinyl chloride-vinyl acetate copolymer resin constituting the base material layer is 10 to 3 times.
0 parts by weight, polyvinyl chloride resin constituting the pattern chip,
And / or wherein the content of the vinyl chloride-vinyl acetate copolymer resin is 30 to 40 parts by weight, and the resin content of the base material layer is at least 5 parts by weight less than the resin content of the pattern chip. It is intended to provide a tone decoration material.

According to a ninth aspect of the present invention, the raw material constituting the base material layer is heated and kneaded, and the kneaded raw material is rolled by a calender roll to form a base material sheet. It is intended to provide a method for producing a cobblestone-like decorative material, characterized in that, after being spread on a sheet, the sheet is further rolled by a calender roll.

[0016]

Embodiments of the present invention will be described below in more detail with reference to the accompanying drawings. FIG. 1 is a plan view of an example of a cobblestone decorative material of the present invention, and FIG. 2 is a longitudinal sectional view of an example of the decorative material. The cobblestone-like decorative material 1 of the present invention includes a base layer 2, small pattern chips 3, and large pattern chips 4. In this specification, a small pattern chip refers to a chip having a particle diameter of 0.5 to 3 mm, and a large pattern chip refers to a chip having a particle diameter of 5 to 150 mm. The thermoplastic resin used for the base layer 2, the small pattern chip 3, and the large pattern chip 4 is polyvinyl chloride resin, polyvinyl chloride resin.
In addition to the vinyl acetate copolymer resin, polyolefin resins such as polyethylene, polypropylene, ethylene vinyl acetate copolymer resin, amorphous poly-α-olefin resin, ethylene-α-copolymer resin (VLDPE, EEM
A, EAA, EEA) and the like. Where VLDP
E is a linear low-density polyethylene-α-olefin copolymer resin, EMMA is an ethylene-methyl methacrylate copolymer resin, EAA is an ethylene-acrylic acid copolymer resin, EE
A shows an ethylene-ethyl acrylate copolymer resin.
Incidentally, the base layer, the pattern chip, the base layer, and if the condition of the deformation recovery rate in the pattern chip is satisfied, each may use a blend using the same thermoplastic resin,
Mixtures using different thermoplastic resins may be used.

Among the above-mentioned thermoplastic resins, polyvinyl chloride resin is preferred, and a mixture of polyvinyl chloride resin and vinyl chloride-vinyl acetate copolymer resin can also be used. When a polyvinyl chloride resin or a mixture of a polyvinyl chloride resin and a vinyl chloride-vinyl acetate copolymer resin is used, the resin content of the base layer should be at least 5 parts by weight less than the resin content of the large pattern chip. 10-8
It can be appropriately determined within the range of 0 parts by weight. On the other hand, the resin content of the pattern chip can be appropriately determined in the range of 30 to 85 parts by weight. The reason why the resin content of the base layer is required to be at least 5 parts by weight less than the resin content of the pattern chip is that the base layer at the processing temperature is formed in order to produce a cobble-tone pattern having a natural texture. This is because it is necessary to make the deformation recovery rate smaller than the deformation recovery rate of the pattern chip by 20% or more. Therefore, when the difference between the resin content of the base material layer and the resin content of the pattern chip is less than 5 parts by weight, the difference in the deformation recovery rate at the processing temperature of the base material layer and the pattern chip becomes small or disappears. When rolling the base sheet on which the pattern chips are scattered with the calendar roll, the pattern chips are also rolled together with the base sheet, or the pattern chips are kneaded into the base sheet, and A pattern with cobblestone-like irregularities cannot appear.

In the decorative material of the present invention, a thermoplastic resin or a plasticizer, if desired, such as a color and a pattern, may be used.
Stabilizers, pigments, light stabilizers, antistatic agents and the like may be added.

Among the thermoplastic resins, polyvinyl chloride resin, polyvinyl chloride-vinyl acetate copolymer resin, or a mixture of polyvinyl chloride resin and polyvinyl chloride-vinyl acetate copolymer resin (hereinafter, referred to as PVC etc.) When a is used, it is necessary to add a plasticizer.

The plasticizer may be any general plasticizer. For example, phthalate plastics such as dioctyl phthalate (hereinafter referred to as DOP), dihexyl phthalate, dimethyl phthalate, diethyl phthalate, dibutyl phthalate, diisobutyl phthalate, octyl capryl phthalate, butyl benzyl phthalate, dibenzyl phthalate, and dimethyl glycol phthalate. Agent, phosphate ester plasticizers such as tributyl phosphate, tricresyl phosphate, and trichloroethyl phosphate; fatty acid ester plasticizers such as methyl acetyl resylate, dioctyl adipate and dioctyl azelate; trimet acid such as trioctyl trimet acid Plasticizers, epoxy plasticizers such as epoxidized soybean oil, and polyester polymer plasticizers. These plasticizers can be used alone or in combination of two or more. From the viewpoint of processability and appropriate flexibility of the product,
The addition amount is in the range of 15 to 35 PHR for the base material layer,
Also, for small pattern chips and large pattern chips, 20
~ 30 PHR is preferred.

As the filler, any substance can be basically used as long as it does not cause any chemical or physical change such as melting and decomposition at the processing temperature. Calcium carbonate, talc, silicon dioxide, Examples thereof include inorganic fillers such as clay, magnesium carbonate, aluminum hydroxide, and aluminum sulfate. The addition amount is 325 to 425 PH with respect to the base material layer.
The range of R is preferably 90 to 160 PHR for small pattern chips and large pattern chips.

Examples of the stabilizer include zinc, barium,
In addition to metal stabilizers composed of metal compounds including tin, calcium, cadmium, strontium, aluminum, magnesium, sodium, lead, etc., organic phosphoric acid compounds,
Polyhydric alcohol, epoxy compound, etc. alone or 2
You may mix and use more than seeds. The addition amount is preferably in the range of 5 to 15 PHR for the base material layer, and more preferably 4 to 8 PHR for the small pattern chip and the large pattern chip. If the amount of the additive is less than the above-mentioned amount, there is a possibility that the effect as a stabilizer may not be sufficiently exhibited, and if the amount is more than the above-mentioned amount, an extra compounding cost is required, or bleeding of the added stabilizer or the like is performed. Problems may occur, which is not desirable from an economic or quality perspective.

Examples of the pigment include inorganic pigments such as titanium oxide, zinc white, carbon black, red iron oxide, titanium yellow, ultramarine blue, cobalt blue, and graphite, azo pigments such as disazo red and disazo yellow, phthalocyanine blue, and phthalocyanine green. And other organic pigments.
In addition, in order to make the cobblestone pattern appear more natural, the amount of addition is in the range of 1.0 to 5.5 PHR with respect to the base material layer.
For small pattern chips and large pattern chips, 1.
It is preferable to add in the range of 0 to 15 PHR.

Examples of the light stabilizer include organic ultraviolet absorbers such as benzotriazole, benzophenone, and salicylate; inorganic ultraviolet absorbers such as finely divided zinc oxide and cerium oxide; and bis- (2,2,2). Hindered amine radical scavengers such as 6,6-tetramethyl-4-piperidinyl) sebacate and piperidine radical scavengers can be used. In order to sufficiently exert the effect, it is preferable to use the above-mentioned ultraviolet absorber and radical scavenger in combination, as is commonly performed. The addition amount is preferably in the range of 3 to 6 PHR for the substrate layer, and preferably in the range of 1 to 2 PHR for the small pattern chip and the large pattern chip. If the amount of the additive is less than the above-mentioned amount, the effect as a light stabilizer may not be sufficiently exerted. If the amount is more than the above-mentioned amount, an extra compounding cost is required, which is not preferable from the economical aspect.

Further, a quaternary ammonium salt-based surfactant is used as an antistatic agent, and the amount of addition is in the range of 2.5 to 5.5 PHR with respect to the base material layer. 2.5 to 5.5 PHR for large chips
Is preferred.

Another embodiment of the structure of the decorative material of the present invention will be described below. As shown in FIG. 3, a lower layer 12 is further provided under the layer 11 on which the small pattern chip 7 and the large pattern chip 8 are provided on the base material layer 6, and the lower layer 12 holds the fiber sheet 10 between the sheets 9. One having a built-in configuration is exemplified. In the case of the embodiment, since the tensile strength and the dimensional stability of the decorative material of the present invention are improved by the fiber sheet 10 incorporated therein, it is particularly suitable for use as a long sheet. In addition, as shown in FIG.
4, a layer 20 provided with small pattern chips 15 and large pattern chips 16, and a fiber sheet 17 provided between a lower layer 21 composed of a lower sheet 18 and a foam sheet 19. In the case of this embodiment, the provision of the fiber sheet 17 improves the tensile strength and the dimensional stability of the decorative material of the present invention. In addition, the provision of the foam sheet 19 imparts functions such as impact resistance. can do. This embodiment is also suitable for use as a long sheet. Further, as shown in FIG. 5, a small pattern chip 24 and a large pattern chip 25 are provided on the base material layer 23,
Lower layer 2 having fiber sheet 27 on the bottom surface of sheet 26
9 may be provided. Also in the case of such an embodiment, since the tensile strength of the decorative material of the present invention and dimensional stability are improved,
Particularly, it is suitable for use as a long sheet. still,
Any of the above-described embodiments can be used not only as a long sheet but also as a tile by punching out a fixed size as a matter of course.

Next, the method for producing the decorative material of the present invention will be described in detail.
The manufacturing process includes a process of manufacturing a pattern chip and a process of finishing a decorative material. First, by the pattern chip manufacturing process,
Produce large pattern chips and small pattern chips. The manufacturing process diagram is shown in FIG.

A predetermined amount of the above-mentioned thermoplastic resin, filler and the like are blended, mixed and kneaded. As shown in FIG. 6, a Banbury mixer 31 generally used for the purpose of kneading raw materials or the like is used, but is not limited to the Banbury mixer if kneading or the like is possible. For example, the raw materials may be mixed by a Henschel mixer, and the mixed raw materials may be further kneaded by a single-screw or twin-screw T-die extruder. It can be kneaded with a mixing roll or the like.

The raw materials kneaded or the like are mixed with 100 to 18
The mixture is further kneaded with a mixing roll 32 set at 0 ° C. to finish a pad 33 having a thickness of 10 to 30 mm. The pad 33 is rolled into a sheet having a thickness of 8 to 15 by a first calender roll 34 set at 80 to 150 ° C., and further rolled to a sheet 36 of 1 to 5 mm by a second calender roll 35. After the sheet is water-cooled and drained with a sponge roll 38, a particle size of 0.5 to
The chips are crushed into two sizes of 3.0 mm and 5 to 150 mm to produce large and small chips. At this time, the water temperature of the cooling water tank 37 used for water cooling is desirably 20 ° C. or less in order to efficiently perform the pulverization.

Next, the decorative material of the present invention is finished in a decorative material finishing step. FIG. 7 shows an example of the finishing step.
A Banbury mixer 41 generally used for the purpose of kneading raw materials and the like is used, but is not limited to a Banbury mixer as long as kneading and the like are possible. For example, raw materials can be mixed by a Henschel mixer, and the raw materials can be kneaded with a mixing roll or the like. Further, the raw materials mixed by a Henschel mixer may be kneaded by a single-screw or twin-screw T-die extruder.

The raw materials kneaded or the like are mixed with 100 to 18
The mixture is further kneaded with a mixing roll 42 set at 0 ° C. to finish a pad 43 having a thickness of 10 to 30 mm. The pad 43 is rolled by a first calender roll 44 on a sheet 45 at a predetermined ratio. A predetermined amount of large and small pattern chips 47 is scattered and rolled into a sheet 51 of 1 to 5 mm by a second calender roll 48 set at 80 to 200 ° C.
When the fiber sheet is provided on the back surface of the base material layer, the fiber sheet 49 may be unwound and pressed by the press roll 50 against the back surface of the sheet rolled by the second calender roll 48.

On the other hand, when the raw materials mixed by the Henschel mixer are kneaded by a single-screw or twin-screw T-die extruder, the rolling step of the mixing roll and the first calender roll is not necessarily required in addition to the above embodiment. , T
A sheet is directly produced by a die extruder, and large and small pattern chips are sprayed on the produced sheet at a predetermined ratio and in a predetermined amount in the same manner as described above, and further rolled into a sheet by a calender roll. When a fiber sheet is provided, the fiber sheet may be unwound and provided in the same manner as described above while pressing the back surface of the sheet rolled by the second calender roll with a press roll.

Finally, the sheet is cooled by immersing it in a water tank or the like, drained with a sponge roll 53 and punched out by a punching machine 5.
By punching out into a certain shape at 4, a tile-shaped cobblestone-like decorative material 55 of the present invention can be obtained. As a cooling method, an air cooling method using a blower may be employed in addition to the water cooling method as described above.
In addition, the decorative material of the present invention may be used as a sheet as it is, or, if desired, kneaded pulverized waste of tile carpet, thermoplastic resin tile, or other resin as a lower layer of the base material layer, and kneaded the sheet into a base material. By laminating the sheets on top of the layers, they can be recycled and also reduce industrial waste.

When the base material layer is formed by laminating a plurality of sheets, one sheet prepared in advance may be used.
Alternatively, two or more sheets are fed out, heated by a heater or the like, heat-sealed by a press roll or the like, and further, the fused sheet (hereinafter referred to as a fused sheet) is sent to a second calender roll, and the pattern chip is formed. To form a rolled sheet (hereinafter, referred to as a pattern chip scatter sheet), and at the same time, laminate the pattern chip scatter sheet and the fusion sheet while pressing with a press roll. When a fiber sheet is provided, the fiber sheet may be spread while being pressed by a press roll on the back surface of the sheet rolled by the second calender roll.

Further, a foamed layer obtained by heating and foaming a paste polyvinyl chloride resin containing a foaming agent may be provided below the base material layer by a commonly used method. In this case, as in the case of the sheet, the foamed sheet is fed out, the fused sheet is sent to the second calender roll, and the patterned chip-dispersed sheet is formed, and at the same time, the fused sheet is laminated while being pressed with the press roll. Note that, without providing a fusion sheet, a pattern chip scattering sheet may be directly laminated on a foam sheet.

Further, when a fiber sheet is embedded in the base material layer, the fiber sheet to be embedded is fed out, and the fiber sheet is embedded by being sandwiched between sheets to be heat-sealed. However, when a fiber sheet is incorporated, it is necessary to incorporate the fiber sheet in a layer 1 mm or more below the surface of the base material layer. This is because, when the pattern chip is incorporated at a position less than 1 mm from the surface of the base material layer, it becomes difficult for the pattern chip to enter the base material layer, which may cause the pattern chip to be lost later.

The fiber sheet provided in the base material layer or provided on the back surface of the base material layer includes at least one kind of inorganic fiber of glass, carbon, and metal, polyester, nylon, urethane, acrylic, polypropylene, pulp, and the like.
A woven fabric, a nonwoven fabric, or a knitted fabric made of at least one organic fiber selected from cotton and rayon can be used. The fiber sheet 5 can be used alone, or two or more fiber sheets of the same type or different types can be used. May be.

The decorative material of the present invention can be used as a decorative material on floors, walls, ceilings, etc., and as an exterior material, it can be used as a veranda, porch, outdoor stairs, etc., or as an outer wall material. May be.

[0039]

[Example 1] The composition of the pattern chip and the composition of the substrate layer are shown in Tables, respectively.
It is shown in FIG. As mentioned above, the chip mix
Mix and knead with a mixer, set the front roll to 120 ° C,
With a mixing roll set at 140 ° C
Further kneading is performed to produce a pad having a thickness of about 30 mm. The
Calendar roll with pad set to 100-110 ° C
2mm, water-cooled and drained
Chips 0.5 to 1.5 mm in size, i.e. small chips
And chips having a particle size of 5 to 15 mm, that is,
Crush into large chips. Next, mix the base material layer
Mix and knead with a mixer.
Mixing roll with back roll set at 140 ° C
And further kneading to produce a pad of about 30 mm
Pass through a render roll. In addition, the large model
Chips and small chips are mixed at 8: 2
And sprayed on the sheet, and set at 100 to 110 ° C.
Rolled 3mm with 2nd calender roll, water cooled, drained
After that, it was punched into 450 mm square to obtain the decorative material of the present invention.
Was. (Table 1)Item Base layer composition Pattern chip composition PVC (* 1) 100 100 DOP 25 25 Calcium carbonate (* 2) 375 125 Stabilizer (* 3) 10 6 Pigment (* 4) 3 8  (* 1) A mixture of straight PVC having an average degree of polymerization of 700 and a vinyl chloride-vinyl acetate copolymer having an average degree of polymerization of 700 and a vinyl acetate content of 5% (* 2) Heavy calcium carbonate having an average particle diameter of 250 μm (* 3) Barium / zinc stabilizer (* 4) Toning mixture of titanium oxide, carbon and iron oxide

[0040]

Example 2 A large pattern chip and a small pattern chip are manufactured by the same composition and the same method as in "Example 1". The “base layer composition” described in “Table 1” was mixed and kneaded with a Banbury mixer, further kneaded with a mixing roll set at 120 ° C. for a front roll and 140 ° C. for a back roll, and calendered. The sheet is formed into a 1 mm sheet, and after cooling, the sheet is wound up. Next, a foam sheet made of a paste polyvinyl chloride resin, DOP, barium / zinc-based stabilizer, diazo-based foaming agent, calcium carbonate or the like, a polyester nonwoven fabric, and the above-prepared sheet are fed out. After heating the upper surface of the sheet with a heater, the sheet is spread with a polyester non-woven fabric by a press roll (hereinafter, referred to as a “non-woven fabric”).
A sheet on which a polyester nonwoven fabric is spread is referred to as a spread sheet). Further, after the lower surface of the spread sheet is heated by a heater, the foam sheet is spread by a press roll. On the other hand, the same base layer composition was mixed and kneaded with a Banbury mixer, and further kneaded with a mixing roll set at 120 ° C. for the front roll and 140 ° C. for the back roll to produce a pad of about 30 mm. Pass through one calendar roll. In addition, the large pattern chips already manufactured,
And the small-pattern chips are mixed in a ratio of 8: 2, sprayed on the sheet, rolled by 1 mm with a calender roll set at 100 to 110 ° C., and the rolled sheet is pasted with the spread sheet and the foam sheet. Spread them together and press rolls. Lastly, the decorative material of the present invention was obtained by air cooling with a blower and winding.

According to the present invention, a decorative material having a cobblestone pattern having a natural texture and a cobblestone pattern which is not easily lost by abrasion is obtained.

[0042]

As described in detail above, according to the present invention, a cobblestone pattern having a natural texture can be obtained.
A cobblestone-like decorative material in which the pattern does not disappear, such as a cobblestone-like decorative material in which a pattern is provided by laminating a printed sheet or printing on a conventional base material layer, was obtained. In addition, the decorative material having a cobblestone pattern, which was conventionally possible only with a homogeneous style, or a homogeneous sheet, is not only a homogeneous style, or a homogeneous sheet, but also a composition tile,
Or it became possible with a composition sheet. Further, a cobblestone-shaped decorative material could be obtained very easily without the need for a complicated process such as spraying of a pattern chip after application of a paste resin as in the related art, and a special spraying device and spraying technique.

Further, by providing a foamed layer below the base material layer, it is possible to impart shock absorbing properties. Under the base material layer, crushed tile carpet, thermoplastic resin tile,
Alternatively, by laminating the above-mentioned sheet on the base material layer obtained by kneading and kneading a pulverized product such as a resin or the like into a sheet, the sheet can be recycled and industrial waste can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of the decorative material of the present invention.

FIG. 2 is a longitudinal sectional view showing an example of the decorative material of the present invention.

FIG. 3 is a longitudinal sectional view showing another example of the decorative material of the present invention.

FIG. 4 is a longitudinal sectional view showing another example of the decorative material of the present invention.

FIG. 5 is a longitudinal sectional view showing another example of the decorative material of the present invention.

FIG. 6 is a view showing a process for producing a pattern chip as an example of the decorative material of the present invention.

FIG. 7 shows a finishing process diagram of an example of the decorative material of the present invention.

[Explanation of symbols]

1 present decorative material 2, 6, 14, 23 base layer 3, 7, 15, 24 small pattern chip 4, 8, 16, 25 large pattern chip 9, 18, 26 sheet 10, 17, 27 fiber sheet 21, 29 Lower layer 19 Foamed sheet 31, 41 Banbury mixer 32, 42 Mixing roll 34, 44 First calender roll 35, 48 Second calender roll 37, 52 Cooling water tank 40 Crusher 39 Chip 47 Small pattern chip, Large pattern chip mixed chip 49 Fiber sheet 50 press roll 54 punching machine 55 decorative material of the present invention

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 4F100 AB01D AD11D AG00D AJ04D AJ05D AK01A AK01B AK07D AK15 AK15A AK15B AK15C AK15J AK22A AK22B AK22C AK22J AL01A AL01B AL01C AT00 BA03 BA05 BA10 BA00 DD02 DD08 DE05B DG01D DG02D DG12D DG13D DG15D EH762 EJ192 GB08 HB13 HB21 JB16A JB16B JK09 YY00A YY00B YY00C

Claims (9)

[Claims] 1. A pattern chip made of a thermoplastic resin is exposed on the surface of a base material layer made of a thermoplastic resin.
In the decorative material having irregularities on the surface, the deformation recovery rate of the pattern chip at 90 ° C. to 200 ° C. is 40%.
Wherein the deformation recovery rate of the base layer at the same temperature is at least 20% smaller than the deformation recovery rate of the patterned chip. 2. The cobblestone-like decorative material according to claim 1, wherein the base material layer is constituted by a sheet in which two or more layers are laminated. 3. The cobblestone-like decorative material according to claim 1, wherein the base material layer contains an inorganic and / or organic fiber sheet or is provided on the back surface. 4. A woven fabric wherein the inorganic and / or organic fiber sheet comprises at least one inorganic fiber of glass, carbon and metal and / or at least one organic fiber of pulp, cotton, rayon and polypropylene. The cobblestone-like decorative material according to claim 3, which is a nonwoven fabric or a knitted fabric. 5. The cobblestone-like decorative material according to claim 1, wherein the pattern chips include small pattern chips having a particle diameter of 0.5 to 3 mm and large pattern chips having a particle diameter of 5 to 150 mm. 6. The cobblestone-like decorative material according to claim 5, wherein the weight ratio of the small pattern chip and the large pattern chip is mixed at a ratio of 2: 8. 7. The thermoplastic resin forming the base layer is a polyvinyl chloride resin and / or a vinyl chloride-vinyl acetate copolymer resin, and the thermoplastic resin forming the pattern chip is a polyvinyl chloride resin. The cobblestone-like decorative material according to claim 1, wherein the decorative material is a vinyl chloride-vinyl acetate copolymer resin. 8. A polyvinyl chloride resin constituting the base material layer and / or a vinyl chloride-vinyl acetate copolymer resin content of 10 to 30 parts by weight, a polyvinyl chloride resin constituting the pattern chip, and / or 8. The resin according to claim 7, wherein the content of the vinyl chloride-vinyl acetate copolymer resin is 30 to 40 parts by weight, and the resin content of the base layer is at least 5 parts by weight less than the resin content of the pattern chip. Cobblestone decorative material. 9. The raw material constituting the base material layer is heated and kneaded,
A method for producing a cobblestone-like decorative material, comprising: forming a base material sheet by rolling with a calender roll; then spreading the pattern chips on the sheet; and further rolling the base material sheet with a calender roll.