JP4694944B2 - Decorative sheet - Google Patents

Description

  The present invention relates to a decorative sheet for use in interior decoration and construction materials for buildings such as houses, building materials such as joinery, furniture fixtures, housing equipment and home appliances, and more specifically, the surface is visually It has a calm and matte feeling with a feeling of unevenness and a feeling of touch, and is excellent in wear resistance, scratch resistance and organic solvent resistance, and has excellent durability that can maintain the matte feeling for a long time Regarding the sheet.

  Conventionally, the above-described special decorative sheet is manufactured by the printing method as described below.

  First, a first method is to form a grain pattern on a base material, and to form a surface protective layer on the grain pattern with a transparent or translucent glossy reactive curable resin coating layer, This is a method of visually forming an embossing effect by forming a conduit groove pattern layer with a matte ink composition on a protective layer (see, for example, Patent Document 1).

  Next, the second method is to form a grain pattern layer on the decorative paper, form a surface protection layer with a transparent or translucent reactive curable resin on the grain pattern layer, and react on the surface protection layer. In this method, a conduit groove pattern layer is formed by a photocurable ink, and a transparent or translucent surface protective layer is aligned with the conduit groove pattern layer by a printing plate that does not form the conduit groove pattern layer (for example, patent Reference 2).

  Further, the third method is to print a wood grain pattern on a colored film, and paste a transparent film thereon, then emboss the pattern pattern such as a conduit groove on the surface with an emboss plate to form a recess, Further, this concave portion is dyed by a wiping method, and a transparent or translucent surface protective layer is formed on the entire surface by a gravure method.

  By the way, the demands of customers for cosmetic sheets are becoming more and more sophisticated, and the surface finish has a visual embossing effect, or is substantially uneven, and the matte finish is also calm in parts other than the conduit grooves. A soft finish that expresses the texture of the wood as the feel of the surface is preferred.

  Further, in terms of quality, there is a demand for a decorative sheet that is excellent in wear resistance, scratch resistance, and organic solvent resistance, and has excellent durability that can maintain a matte feeling over a long period of time.

On the other hand, a matte cosmetic material having good scratch resistance has been proposed by a surface protective layer made of a paint containing beads, which has been used for producing a suede tone. Further, as a method for forming irregularities on the surface protective layer, a normal hot embossing method and a casting method on a shaped sheet have been proposed (for example, Patent Document 3).
JP-A-52-38002 Japanese Patent No. 2884842 JP-A-6-79831

  However, the decorative sheet according to the first and second methods proposed to satisfy such a demand can appear in a recess as a visual or touch feeling in a desired portion such as a conduit pattern portion. This is insufficient for a soft finish that expresses a wood texture as a touch feeling other than a desired portion such as a pattern portion.

  In addition, the decorative sheet according to the third method is embossed with an embossing plate to form a concave portion, and then the concave portion is valley-dyed with ink by a wiping method. In addition, it is difficult to satisfy the demands of the consumer, and the touch feeling of other unembossed parts cannot appear.

  In addition, for those using the bead pigment of Patent Document 3 described above, a surface protective layer containing a bead pigment is provided on the wood grain pattern layer, and the surface protective layer is provided with irregularities on the surface of the wood grain plate such as a wood grain conduit groove. For the unevenness to be expressed, a hot embossing method or a casting method on a shaped sheet has been proposed, but a heat embossing machine or a casting method facility is required in addition to a gravure printing machine as a processing machine.

  Therefore, the present invention has a gravure printing method, the surface is excellent in abrasion resistance, scratch resistance and organic solvent resistance, and a natural wood texture can be obtained visually with a feeling of hand-painted natural wood. An object of the present invention is to provide a pre-coated decorative sheet having an excellent design with a grain pattern in which a sufficient unevenness is reproduced.

In order to solve the above-described problems, the invention of claim 1 is directed to a decorative sheet in which a protective layer mainly composed of a transparent resin component is provided on the surface of a printed layer provided on the printed sheet. The layer comprises a first protective layer provided on the printed layer of the printing sheet, and a second protective layer containing transparent or translucent spherical particles and provided in a predetermined portion on the first protective layer; The second protective layer is formed by a gravure printing plate having a depth of 45 to 120 μm, the average particle diameter of the spherical particles is 5 to 40 μm, and the content of the spherical particles is a main component of the second protective layer. It is 10 to 150 parts by weight per 100 parts by weight of a certain resin composition, and the glossiness of the second protective layer is 20 or less in terms of gloss value (60 ° incidence) measured by a specular glossiness measurement method according to JIS Z-8741. , and the table protruding the first protective layer A configuration is adopted in which the gloss of the surface is lower than the gloss of the surface of the second protective layer by a difference in gloss value in the range of 01 to 20 .

Next, the invention according to claim 2 uses a film or a colored film in which a printed layer and a concealing layer are sequentially provided on the back surface of a transparent or translucent film, and the surface of the film is mainly composed of a transparent resin component. In the decorative sheet provided with a layer, the protective layer includes a first protective layer and a second protective layer containing transparent or translucent spherical particles and provided in a predetermined portion on the first protective layer. The second protective layer is formed by a gravure printing plate having a depth of 45 to 120 μm, the average particle diameter of the spherical particles is 5 to 40 μm, and the content of the spherical particles is the main content of the second protective layer. It is 10 to 150 parts by weight per 100 parts by weight of the resin composition as a component, and the glossiness of the second protective layer is a gloss value (60 ° incidence) measured by a specular glossiness measurement method according to JIS Z-8741. 20 or less, the first A configuration is adopted in which the gloss of the protruding surface of the protective layer is lower than the gloss of the second protective layer surface by a gloss value difference in the range of 01-20 .

  In the first or second aspect of the invention, the printed layer refers to a layer on which a design pattern such as a wood grain pattern is printed. The pattern is not limited to the grain, and various geometric patterns and shading patterns may cause unevenness and It includes those printed with various patterns such as those representing a metal surface, and further includes non-patterns printed in a single color.

  In the invention of claim 2, the colored film is a film in which a coloring agent such as a pigment is kneaded in advance in the film instead of providing a printing layer and a concealing layer on the back surface of the former transparent or translucent film. A film colored by printing on its surface.

  In the invention of claim 1 or 2, transparent or translucent spherical particles include those using fine resin beads or inorganic beads, and the resin beads include acrylic resin beads, polyurethane resin beads, polyethylene There are resin spherical beads of transparent organic compounds such as resin beads, polystyrene resin beads, and melamine resin beads, and inorganic beads include spherical particles of transparent inorganic materials such as alumina, silica powder, and glass particles.

  The reason why the spherical particles are limited to transparent or semi-transparent particles is to prevent visual influence on the color of the printed layer or the colored film below the protective layer.

  Further, the predetermined portion on the first protective layer on which the second protective layer is provided refers to a convex portion of the concavo-convex expression that is to appear on the surface of the decorative sheet. In order to express a concave portion such as a concave portion and a fine fiber structure, it is a portion provided by registering a portion other than the pattern of the printed layer. However, the predetermined portion does not necessarily match the pattern of the print layer, and can be a random uneven expression that does not match the pattern. In short, even if the pattern of the printed layer and the unevenness due to the provision of the second protective layer do not match, the real feeling can be sufficiently revealed by the appearance pattern and the touch feeling (due to the unevenness).

  In the invention of claim 1 or 2, the fact that the gloss of the protruding surface of the first protective layer is lower than the gloss of the surface of the second protective layer is that the second protective layer of the first protective layer is covered. There is a difference in gloss between the concave portion that appears on the outside that is not covered and the surface of the convex portion that is the surface of the second protective layer, and the gloss of the concave portion is more matte than the convex portion. In order to obtain the state, the first protective layer and the second protective layer have a gloss difference caused by the gloss difference of the resin not containing the matting agent or the amount of the resin applied, and the second protective layer is more glossy than the first protective layer. Or the matting agent is contained only in the first protective layer, or the material and amount of the matting agent contained in both the first protective layer and the second protective layer are adjusted. It can be performed by appropriate means such as making the protective layer matt than the second protective layer.

Furthermore, in the invention of claim 1 or 2 , a reactive curable resin or an ultraviolet / electron beam curable resin may be used as the resin for the first protective layer and the second protective layer containing spherical particles for improving scratch resistance. By using the resin, it became a sheet having a superior solvent resistance.

  Examples of the reactive curable resin composition that is the main component of the first protective layer and the second protective layer include a product comprising an acrylic polyol or a polyester polyol and a polyisocyanate, a catalyst such as paratoluenesulfonic acid on an amino alkyd resin. Use the one with added. Of course, plasticizers, stabilizers, dispersants, matting agents, and diluents may be added as necessary.

  Here, the printed sheet according to claim 1 is formed by using an opaque decorative sheet as a base material and providing a concealed solid layer and a printed layer on the base material, and a first protective layer is provided on the printed layer. The second protective layer containing transparent or translucent spherical particles is provided at a predetermined position on the first protective layer.

  Further, the printed sheet according to claim 2 is a film formed by using a transparent or translucent film as a base material and sequentially providing a printing layer and a concealing solid layer on the back surface of the base material, Using a colored film that has been colored from the beginning in the stage, a first protective layer is provided on the surface of the printed layer, and a second protective layer containing transparent or translucent spherical particles It is provided in a predetermined part on one protective layer.

  According to the present invention, the first and second protective layers make the surface excellent in wear resistance, scratch resistance and organic solvent resistance. For example, when applied to a decorative sheet having a printed pattern of wood grain, natural wood Finished with a matte finish, the feel and visual wood texture approach that of natural wood, and the visual unevenness and feel between the part without the second protective layer and the part with the second protective layer As a result, and the protrusion of the spherical particles of the second protective layer further containing spherical particles, a sufficient uneven step can be obtained, and fine uneven portions with various size steps can be formed, and various uneven feelings can be obtained. It is possible to bring out a wood grain pattern with a reproducible wood grain pattern and excellent design.

  That is, since the sheet obtained in the present invention contains transparent or translucent spherical particles in the second protective layer, it has a calm matte surface, and a soft appearance is obtained by the lens effect. The surface of the second protective layer had fine irregularities, was very similar to the feel of the material feeling, and a highly designable sheet was obtained.

  Furthermore, the portion without the second protective layer becomes a concave portion, and the gloss of the surface of the first protective layer protruding from the concave portion is lower than the gloss of the surface of the second protective layer, so that the concave portion is more matte than the convex portion. Thus, a visual unevenness can be obtained due to the difference in gloss of the uneven portions.

In general, the glossiness of the entire surface of the decorative sheet is a gloss value (60 ° incidence) measured by a specular glossiness measuring method according to JIS Z-8741, up to about 40 or less, preferably 20 or less has a calm matte feeling, and the present invention sets the second protective layer to 20 or less. In addition, if the gloss value of the portion where the first protective layer protrudes is different from the gloss value of the second protective layer, a visually uneven feeling is visually expressed, but if the difference between the gloss values is too large, a soft feeling is generated. can not be expressed, the gloss value difference is in the range of 01 to 20.

  Further, as the effect of the first protective layer, in the case of a fibrous base material such as paper, the second protection by so-called unevenness in which the absorbency peculiar to the fibrous base material varies depending on the place by the reactive curable resin applied The spherical particles protruding from the surface are stabilized without burying the spherical particles contained in the layer, and the feeling of touch due to the unevenness and the stability of the matte effect are improved. Moreover, the physical property which is the abrasion resistance of the part which the 1st protective layer protrudes on the surface, ie, does not have the 2nd protective layer, scratch resistance, and solvent resistance is ensured.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  As shown in FIG. 1, the decorative sheet 1 uses an opaque decorative paper 2 as a base material, and is covered with a concealing solid layer 3 and a nitrocellulose-based, urethane-based, acrylic-based, chloride, and the like on the decorative paper 2 by a gravure printing machine. For example, a printing layer 4 having a wood grain pattern is provided with a normal ink using a vinyl-vinyl acetate copolymer, polyester or the like as a binder to form a printing sheet 5.

  Examples of the decorative paper 2 include thin paper, reinforced paper, impregnated paper, synthetic paper, colored polyester film, colored vinyl chloride film, colored olefin-based film, and aluminum stay.

  The colored ink for forming the printed pattern 4 of the wood grain pattern is formed of an ink containing a bright pigment such as a pearl pigment or a metal powder, so that the luster inherent to the wood grain of the wood grain board, that is, “irradiation” Is expressed, and the wood texture of natural wood is obtained.

  Furthermore, the surface of the printing sheet 5 has a structure in which a first protective layer 7 containing an appropriate matting agent and a second protective layer 9 containing an appropriate matting agent and spherical particles 8 are provided as the protective layer 6. It has become.

  The first protective layer 7 is provided by being printed with a predetermined thickness on the wood grain print layer 4 of the printing sheet 5, and the second protective layer 9 is not formed with a conduit groove pattern portion and other pattern portions. A printing plate having a desired grain pattern having a portion is used and printed on the first protective layer 7 in accordance with a predetermined portion of the grain pattern printing layer 4 of the print sheet 5.

  The first protective layer 7 and the second protective layer 9 are reactive curable resins that form a high-strength coating film, such as amino alkyd resins, unsaturated polyester resins, epoxy resins, urethane resins, and acrylic resins. Etc. as the main components, and both may be the same resin or different resins.

  A matting agent is appropriately added to the first protective layer in the resin, and the matting agent may be a conventional inorganic fine powder such as silica, calcium carbonate, barium sulfate, clay, and talc.

  The second protective layer 9 is also formed by adding spherical particles 8 to the resin. As used herein, the spherical particles may be particles having an elliptical shape with a small eccentricity or a polyhedral shape with a large number of faces or rounded corners that are nearly spherical. When the spherical particles are free of corners, the rate at which the doctor blade is damaged during resin coating by the gravure printing method is low, and the surface of the resulting decorative sheet has excellent scratch resistance and abrasion resistance such as scratches and scratches. In addition, the resistance to particle dropout is obtained, and the surface shape hardly changes.

  The spherical particles 8 are beads of acrylic resin, urethane resin, alumina, melamine particles, silica, etc., and are preferably true spheres having an average particle size of 5 to 40 μm. The second protective layer 9 is made of spherical particles. The content of 8 is set to 10 to 150 parts by weight per 100 parts by weight of the resin composition that is the main component of the second protective layer 9, and the spherical particles 8 partially protrude from the surface of the second protective layer 9. become.

  In order to further improve the scratch resistance and wear resistance of the first protective layer and the second protective layer, it is effective to add a slip agent to give the resin lubricity. As the slip agent, a fatty acid amide, a fatty acid derivative such as a higher fatty acid, olefin wax, or silicone oil may be appropriately selected and added in an amount of about 0.1 to 5 parts by weight per 100 parts by weight of the main resin composition.

  Further, in the case of a wood grain pattern, for example, the second protective layer 9 is provided with a desired wood grain pattern having a portion in which a conduit groove pattern portion, a fine fiber pattern portion and other pattern portions are not formed, and the gravure printing plate depth is 45. Since the gravure printing plate having a thickness of ˜120 μm is printed on the first protective layer 7 having a lower gloss than the second protective layer in accordance with a predetermined portion of the print pattern 4 of the wood grain pattern of the printing sheet 5, the first Excellent visual design due to the difference in gloss between the protective layer and the second protective layer, and the design that reproduces the unevenness due to the level difference caused by the thickness of the second protective layer 9 and the protrusion of the spherical particles 8 on the surface. The wood grain pattern can be revealed.

  The decorative sheet 1 produced in this way is used for surface makeup of interior materials and construction materials of buildings such as houses, building materials such as fittings, furniture fixtures, housing equipment and home appliances, This decorative sheet 1 is provided with a soft matte feeling with a soft texture as a visual concavo-convex sensation and a soft feel as a texture, in addition to wear resistance and scratch resistance. It has excellent resistance to organic solvents and excellent durability that can maintain a matte feeling for a long time.

  FIG. 2 shows an embodiment of a decorative sheet using a transparent film as a base material.

  As shown in the figure, the decorative sheet 1 'uses a transparent film 10 as a base material, and a gravure printing machine uses a urethane resin, an acrylic resin, a vinyl chloride-vinyl acetate copolymer resin, A printing film 11 is formed by providing a woodgrain pattern printing layer 4 and a concealing solid layer 3 formed by appropriately selecting a normal colored ink using a polyester resin as a binder, and the surface of the substrate of the printing film 11 Further, as the protective layer 6, a first protective layer 7 containing a matting agent and a second protective layer 9 containing spherical particles 8 are provided.

  Examples of the transparent film 10 include a polyester film, a vinyl chloride film, and an olefin film.

  The said 1st protective layer 7 is printed and provided by the predetermined thickness on the printing film 11, and the 2nd protective layer 9 is a part in which a conduit groove pattern part, a fine fiber structure pattern part, and other pattern parts are not formed. A printing plate having a desired grain pattern is used, and is printed on the first protective layer 7 at a predetermined portion of the grain pattern printing layer 4 of the printing film 11.

  In addition, the configurations, materials, thicknesses, printing means, and the like of the first protective layer 7, the second protective layer 9, and the spherical particles 8 are substantially the same as those in the embodiment of FIG.

  The decorative sheet 1 ′ of this embodiment has a surface with excellent wear resistance, scratch resistance, and organic solvent resistance, similar to the decorative sheet 1 of FIG. Due to the calm matte paint and the lens effect of spherical particles, a visually soft finish is obtained.

  The decorative sheet 1 ′ thus produced is used for surface makeup of interior materials and construction materials for buildings such as houses, building materials such as fittings, furniture fixtures, housing equipment and home appliances. This decorative sheet 1 ′ has a calm matte feeling with a rough surface as a visual and touch feeling, and is excellent in wear resistance, scratch resistance and organic solvent resistance, and has a matte feeling. Excellent durability that can be maintained over a long period of time.

With a gravure printing method, printing of a wood grain pattern (basic solid plate, wood plate, tone plate, conduit plate) was performed on a thin paper having a basis weight of 30 g / m ² with nitrified cotton-based normal ink. A pearl pigment ink made of mica was used for the wood pattern. Gloss value of 10 and the coating amount after drying two-component curable acrylic urethane resin obtained by adding polyisocyanate acrylic polyol as the first protective layer was coated on the entire surface so as to 3 g / m ² thereon, a second As a protective layer, a resin coating containing transparent resin beads having the following composition was applied to the pattern portion using a printing plate having a plate depth of 90 μm on which a conduit pattern portion and a fine fiber structure portion were not formed, and the resultant was dried and wound up.

  The gloss value of the second protective layer portion is 18 to 20, and this decorative paper is left in a curing room kept at 60 ° C. in a wound state for 3 days to promote adhesion strengthening of each layer, promote resin hardening, and prevent blocking. The decorative paper for the present invention was obtained.

[Transparent printing paint composition]
(1) Transparent cross-linked acrylic resin beads (average particle size 30 μm) 25 parts (2) Binder (polyester polyol resin / acrylic polyol resin) 20 parts (3) Slip agent (silicone oil) 1 part (4) Curing agent (hexa Methylene diisocyanate prepolymer) 20 parts (5) Antiblocking agent (amide wax) 1 part (6) Solvent (ethyl acetate, butyl acetate) 50 parts

Using a gravure double-sided printing machine, apply a leather pattern print (pattern pattern plate, base solid plate) with a groove pattern on the back of a transparent olefin film with a thickness of 0.1 mm with normal urethane ink, and then turn the film over As a first protective layer, after drying a two-component curable acrylic urethane resin in which a polyisocyanate is added to a transparent acrylic polyol in which a matting agent is blended on a matte surface treated with fine irregularities Apply the entire surface so that the gloss value is 01 and the coating amount is 2 g / m ² , and align the groove pattern part and the printing register as a second protective layer with a printing plate with a plate depth of 70 μm on which the groove pattern is not formed. The blended transparent resin beaded resin paint was applied, dried and wound up.

  The gloss value of the second protective layer portion is 06 to 07, and this decorative sheet is left in a curing room kept at 20 ° C. for 5 days to promote adhesion strengthening of each layer, curing of resin, and curing for preventing blocking. The decorative sheet as the decorative material of the present invention was obtained.

[Transparent matte printing paint composition]
(1) Transparent melamine resin beads (average particle size 10 μm) 20 parts (2) Matting agent (silica average particle size 1.5 μm) 2 parts (3) Binder (acrylic polyol resin) 18 parts (4) Curing agent (hexa Methylene diisocyanate prepolymer) 10 parts (5) Solvent (ethyl acetate, butyl acetate) 40 parts

By gravure printing method, wood grain pattern printing with a vinyl chloride-vinyl acetate copolymer ink on the back of a 0.1 mm thick vinyl chloride resin film (plasticizer content 20 parts by weight) (pattern pattern plate, solid base plate) And rolled up. In the gravure printing machine again, as a first protective layer, after drying a two-component curable acrylic urethane resin in which a polyisocyanate is added to an acrylic polyol with a matting agent added to the surface, the gloss value is 04 and the coating amount is Apply to the whole surface so as to be ² g / m ² , and a resin coating containing transparent resin beads of the following composition is specified on a printing plate having a plate depth of 60 μm where a grid-like conduit pattern and fine fiber texture pattern part are not formed as the second protective layer It was applied to the part and dried and wound up.

  The gloss value of the second protective layer portion was 20, and this decorative sheet was left in the curing room in the same manner as in Example 2 to obtain a decorative sheet which is the decorative material of the present invention.

[Transparent matte printing paint formulation example]
(1) Transparent cross-linked acrylic beads (average particle size 12 μm) 20 parts (2) Matting agent (silica average particle size 2 μm) 2 parts (3) Binder (acrylic polyol resin) 18 parts (4) Curing agent (xylylene) Isocyanate) 10 parts (5) Solvent (ethyl acetate, butyl acetate) 40 parts

Longitudinal sectional view of a decorative sheet A longitudinal sectional view enlarging another example of a decorative sheet

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Decorative sheet 2 Decorative paper 3 Concealed solid layer 4 Print pattern 5 of wood grain pattern Print sheet 6 Protective layer 7 First protective layer 8 Spherical particle 9 Second protective layer 10 Transparent film 11 Print film

Claims (2)

A decorative sheet in which a protective layer mainly composed of a transparent resin component is provided on the surface of a printing layer provided on the printing sheet, wherein the protective layer is provided on the printing layer of the printing sheet. And a second protective layer that contains transparent or translucent spherical particles and is provided at a predetermined portion on the first protective layer, and the second protective layer is formed by a gravure printing plate having a depth of 45 to 120 μm. The spherical particles have an average particle size of 5 to 40 μm, and the content of the spherical particles is 10 to 150 parts by weight per 100 parts by weight of the resin composition as the main component of the second protective layer; 2 The gloss of the protective layer is 20 or less in terms of gloss value (60 ° incidence) measured by a specular gloss measurement method according to JIS Z-8741, and the gloss of the protruding surface of the first protective layer is the second protection. 01-2 in gloss value difference from the gloss of the layer surface A decorative sheet characterized by being lowered in a range of 0 . In a decorative sheet formed by using a film or a colored film in which a printing layer and a concealing layer are sequentially provided on the back surface of a transparent or translucent film, and a protective layer mainly composed of a transparent resin component is provided on the surface of the film, the protective layer includes a first protective layer consists of a second protective layer provided as necessary contain transparent or translucent spherical particles predetermined portion of said first protective layer, the second protective The layer is formed by a gravure printing plate having a depth of 45 to 120 μm, the average particle diameter of the spherical particles is 5 to 40 μm, and the content of the spherical particles is a main component of the second protective layer. It is 10 to 150 parts by weight per 100 parts by weight, and the glossiness of the second protective layer is 20 or less in terms of gloss value (60 ° incidence) measured by a specular glossiness measurement method according to JIS Z-8741 . 1 Protective layer protrusion The decorative sheet is characterized in that the gloss of the surface is lower than the gloss of the surface of the second protective layer in the range of 01 to 20 in terms of difference in gloss value .

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