JP5861358B2 - Decorative sheet - Google Patents

Description

  The present invention relates to a decorative sheet.

  Conventionally, many decorative sheets with improved design properties have been proposed in order to increase added value. Among them, a decorative sheet has been proposed in which a so-called hidden picture is formed in which a different pattern can be visually recognized depending on the viewing direction. For example, in the decorative sheet disclosed in Patent Document 1, three regions are formed on the surface to improve the hidden picture effect. That is, this decorative sheet has a first surface portion formed on a satin surface, a second surface portion capable of obtaining reflected light in one direction, and reflected light in a direction different from the second surface portion. The third surface portion can be obtained, and a pattern is formed on each surface portion. And by having such a surface part, when this decorative sheet is viewed from the front, first, the pattern of the first surface part which is a pear ground surface can be visually recognized. And when it sees from the diagonal direction, the pattern of the 2nd surface part can be visually recognized by the difference in contrast by the difference in the reflected light of the 2nd and 3rd surface part.

JP 2008-302656 A

  However, the decorative sheet has a pattern that is visible when viewed from the front and a pattern that is visible when viewed from an oblique direction, so that both patterns are not related, and from the viewpoint of design. There is no unity. Therefore, there was room for further improvement from the viewpoint of design.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a decorative sheet having a high design property using a normally visible pattern.

  The decorative sheet according to the present invention includes a surface layer formed with a fabric-like emboss formed by crossing a plurality of first and second yarns, and the surface layer is at least one image representing a predetermined image. An upper thread ratio in which the first thread becomes an upper thread at an intersection of the first and second threads, and an image area, and a background area surrounding at least a part of the image area. The background area is configured differently.

  According to this configuration, an image can be visually recognized in the fabric while using the fabric-like embossing in which the intersecting first and second yarns are knitted. First, a mechanism for visually recognizing an image in the present invention will be described. In the fabric-like embossing, the upper thread has a high height from the lowermost surface of the embossing of the surface layer. Therefore, when light strikes from a direction orthogonal to the direction in which the upper thread extends, a shadow is likely to occur. Therefore, the amount of shadow differs between the region where the ratio of the upper yarn of the first yarn is large and the region where the amount of the upper yarn is small, and both can be identified. In addition, since the 1st and 2nd thread | yarns cross | intersect in a textile fabric, even if the ratio of a 1st thread | yarn has a large ratio of an upper thread | yarn, if the direction of light is parallel to an upper thread | yarn, a shadow will not produce easily. However, in this case, since it is easy for shadows to occur in the region where the ratio of the upper yarn of the second yarn is large, it is possible to identify both regions as a result.

  Therefore, in the present invention, an image region and a background region are provided on the surface layer on which the emboss is formed, and the upper yarn ratio in which the first yarn becomes the upper yarn at the intersection of the first and second yarns is the image region. And the background area are configured differently. Therefore, there is a difference in how the shadow is generated between the image area and the background area. As a result, the boundary between the two regions becomes obvious, and the image region can be visually recognized. As described above, in the present invention, an image that can be visually recognized depending on how the light hits is formed by using the characteristics of the fabric, so that an image due to a shadow can be visually recognized in a design that is normally visible such as a fabric tone. Can be formed. Therefore, a sense of unity as a design is increased and design properties can be improved. The image includes various forms such as a character, a figure, and a pattern in addition to a picture.

  In the decorative sheet, the first yarn and the second yarn can be cut to form a gap in a direction in which the yarn extends, with a portion serving as a lower yarn interposed therebetween. If it does in this way, since a crevice is formed in a part which changes from an upper thread to a lower thread, an upper thread part is emphasized and visually recognized. Therefore, it is possible to make it easy to visually recognize a pattern or the like existing as an image area.

  In the decorative sheet, the difference between the upper thread ratio of the image area and the upper thread ratio of the background area is preferably 10% or more. By providing such a difference in the upper thread ratio, the difference in the amount of shading between the two regions is further increased and both regions can be identified, so that the image region can be visually recognized more clearly.

  Moreover, in the said decorative sheet, it is preferable that the height from the lowest surface of the embossing of a surface layer to the upper surface of an upper thread is 0.3-1.0 mm. This is because if the height is too low, shadows are hardly generated, and if it is too high, it is difficult to form emboss.

  In the decorative sheet, the interval between the first yarns and the interval between the second yarns are preferably 0.2 to 3.0 mm, respectively. Since the shadow is formed in the gap between the yarns, if the interval is small, the area where the shadow is formed decreases, and the shadow effect is reduced. On the other hand, if the interval is too wide, the yarn becomes rough and the design as a woven fabric is reduced. Therefore, it is preferable to set the interval between the yarns as described above.

  ADVANTAGE OF THE INVENTION According to this invention, the decorative sheet with high design property using the pattern which can be normally visually recognized can be provided.

It is sectional drawing of one Embodiment of the decorative sheet which concerns on this invention. It is a top view of FIG. It is an enlarged plan view which shows the textile design which becomes the origin of embossing. FIG. 4 is a sectional view taken along line AA in FIG. 3. It is a top view which shows an example of the textile design in case an upper thread ratio is high. It is sectional drawing of the embossing of the surface layer produced based on the textile design of FIG. It is the top view and sectional drawing when the light L injects into the surface layer. It is a top view which shows the example of an embossed image. It is the photograph which looked at the emboss produced from the embossed image of FIG.8 (b) from the plane. It is the photograph which looked at the embossing of FIG. 9 from the diagonal. It is an enlarged plan view of the textile design which shows the other example of FIG. It is sectional drawing of the embossing of the surface layer produced based on the textile design of FIG. It is a top view which shows the other example of FIG. It is the schematic side view (a) and top view (b) which show the mode of experiment in an Example and a comparative example.

  Hereinafter, an embodiment of a decorative sheet according to the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of the decorative sheet.

  As shown in FIG. 1, this decorative sheet is formed by a sheet-like surface layer 1 having an embossed surface formed thereon, and a sheet-like base material 2 disposed on the lower surface of the surface layer 1. . The surface layer 1 has a thickness of 0.1 to 1.5 mm, and is formed of a resin material or a foamed resin material generally used as a decorative sheet. And what can form an unevenness | corrugation on the surface by the press by an embossing plate so that it may mention later is preferable. Moreover, the base material 2 plays the role which supports the surface layer 1, For example, the fibrous sheet (what is called backing paper) about 0.08-0.15 mm in thickness can be used.

  Next, the surface layer will be described in detail with reference to FIGS. As will be described later, an emboss is formed on the surface layer 1 by pressing an embossed plate against a resin material or the like. First, a fabric design that is the basis of the emboss design will be described. 2 is an embossed image that is a plan view of FIG. 1, FIG. 3 is an enlarged plan view of a fabric design from which embossing is based, and FIG. 4 is a cross-sectional view taken along line AA of FIG. As shown in FIG. 2A, on the upper surface of the surface layer 1, a fabric-like emboss formed by weaving warp yarns 101 and weft yarns 102 is formed. And the textile design 1100 which becomes the origin of this embossing is formed as shown in FIG. That is, a plurality of warp yarns 101 and weft yarns 102 having predetermined widths D1 and D2 and heights H1 and H2 extend in parallel at predetermined intervals T1 and T2, respectively. Forming. At this time, the warp yarn 101 and the weft yarn 102 intersect with each other at a right angle, and at each intersection C, either the warp yarn 101 or the weft yarn 102 passes through the other upper side. Here, the yarn passing through the upper side at the intersection C is referred to as the upper yarn U, and the yarn passing through the lower side is referred to as the lower yarn L. As described above, since the warp yarn 101 and the weft yarn 102 have a predetermined height, the height HT of the intersection C where the two yarns intersect is about 1.5 to 2 times that of one yarn.

  Thus, the embossing formed on the surface layer 1 is formed on the basis of the above-described fabric design, but two types of regions are formed in the embossing formed on the surface layer 1. ing. That is, as shown in FIG. 2A, at least one image region 11 representing a pattern and a background region 12 surrounding the periphery are formed. In the example shown in FIG. 2A, an apple picture is represented as the image area 11. That is, the outer shape is in the shape of an apple. FIG. 2B is provided with an auxiliary line K in order to make the image area 11 of FIG. The image area 11 and the background area 12 are both formed by a fabric-like emboss having warp yarns 101 and weft yarns 102, but the ratio of the warp yarns 101 to upper yarns (hereinafter referred to as upper yarn ratio) is as follows. It is different. Hereinafter, this point will be described in detail with reference to FIG. FIG. 5 is an enlarged plan view of the fabric design from which the image area is based.

  As shown in FIG. 3, a general woven fabric is formed in a lattice shape in which warp yarns 101 and weft yarns 102 alternately repeat upper yarns and lower yarns. The above-described upper thread ratio is the ratio of the points where the warp thread 101 is the upper thread among all the intersections C. In the example of FIG. 3, there are 16 intersections C. Of these, there are 8 locations where the warp yarn 101 is an upper yarn. Therefore, the upper thread ratio is 50%, and in the present embodiment, this is adopted as an example of the fabric design 1100 from which the background region 12 is based. On the other hand, in the example of FIG. 5, the upper thread ratio is different from that of FIG. 3, and this is the fabric design 1200 that is the basis of the image area 11. That is, while the upper thread ratio of the background area 12 is 50%, the upper thread ratio of the image area 11 is 75%. In FIG. 5, the warp yarns 101 are the upper yarns U at 12 locations among the 16 intersections C. That is, the upper thread ratio is 75%. Thus, in the present embodiment, the upper thread ratio is made different between the image area 11 and the background area 12.

  The fabric designs 1100 and 1200 formed as described above are the sources of embossing. For example, when embossing is formed by pressing a resin material with an embossing plate, the planar shape is as shown in FIGS. Although equivalent, a form as shown in FIG. 6 appears in the surface layer 1 as a cross-sectional shape. That is, only the uppermost portion of the woven fabric design 1100 shown in FIG. 4 appears on the surface layer 1, and the portion that cannot be seen from the surface such as the lower thread L does not appear on the emboss.

  Next, the significance of forming the image area 11 and the background area 12 in the present embodiment will be described. As described above, if the upper thread ratio is made different between the image area 11 and the background area 12, the following effects can be obtained. This point will be described with reference to FIG. FIG. 7 shows a plan view and a cross-sectional view when the light L is incident on the surface layer. As shown in the figure, when the light L is incident obliquely from the X direction on the side of the decorative sheet, the upper thread U has a high height from the lowermost surface of the surface layer 1, and therefore a shadow S is likely to occur. At this time, the area where the shadow S is generated is larger when the perpendicular thread is the upper thread than when the thread parallel to the incident direction X of the light L is the upper thread. Therefore, a shadow S is likely to be generated in a region where the ratio of the upper thread perpendicular to the incident direction of the light L is large, and a difference from such a region where the ratio of the upper thread is small is generated, which makes it easy to visually recognize. On the other hand, when the light L is incident obliquely from the Y direction (direction orthogonal to the X direction) on the side of the decorative sheet, the opposite is true. In any case, by making the upper thread ratio different between the image area 101 and the background area 102 as in this embodiment, a difference can be provided in the shade S generated in each area. As a result, the image area 101 Can be identified from the background region 102. That is, the pattern discrimination effect by the shadow S can be obtained. Hereinafter, this is referred to as a shadow effect. Such a shading effect depends not only on the incident direction of the light L but also on the position where viewing is performed. That is, even when the incidence of the light L from the side is weak, the same effect can be obtained by viewing from the oblique side.

  In order to obtain the shadow effect as described above, it is preferable to form embossing as follows. First, since the shading effect depends on the upper thread ratio, it is necessary that at least the upper thread ratio is different between the image area 101 and the background area 102, and the difference is preferably 10% or more, more preferably 20% or more. More preferably. However, although there is no particular upper limit, if the difference in the upper thread ratio is too large, the hidden picture effect of the image area 101 may be reduced and the pattern may be clearly visible. Although this point depends on the production purpose of the decorative sheet, the upper thread ratio is 40% when it is desired to prevent the image area from being easily viewed when viewed from the front and to achieve a hidden picture effect. The following is preferable. In particular, if the upper thread ratio of either the background area or the image area reaches 100%, all the upper threads become warp threads, so that the image area can be easily seen from the front and the hidden picture effect can be reduced. There is sex. From this viewpoint, it is preferable that the upper thread ratio of the image area and the background area is 10% or more and 90% or less.

  Moreover, in order to produce a shadow actively by embossing, it is preferable that the difference of the unevenness | corrugation of embossing is large. In the present embodiment, the height HT from the lowermost surface 103 (see FIG. 6) of the embossment of the surface layer 1 to the upper surface of the upper thread is preferably 0.3 to 1.0 mm, 0.5 to 0 More preferably, it is 7 mm. If it is smaller than 0.3 mm, the shadow effect is difficult to occur, and if it is larger than 1.0 mm, the height may not be formed by an embossed plate described later. Also, the spacing between the threads also affects the shadow effect. That is, when the thread interval is small, the portion where the shadow is generated becomes small, and as a result, the shadow effect becomes small. On the other hand, when the interval is too large, the density of the warp yarn 101 and the weft yarn 102 with respect to the surface layer 1 is reduced, and the design as a woven fabric is deteriorated. From such a viewpoint, the intervals T1 and T2 between the warp yarn 101 and the weft yarn 102 are each preferably 0.2 to 3.0 mm, and more preferably 0.4 to 2.0 mm. In addition, the widths D1 and D2 of the yarns 101 and 102 are difficult to be formed if they are too small, and if they are too large, the balance with the height is deteriorated. More preferably, it is -2.0 mm. However, the thickness of the thread is not necessarily uniform, and a thick thread and a thin thread may be mixed, or the thickness of one thread may be changed. Further, the yarn interval and the yarn thickness may be different between the warp yarn 101 and the weft yarn 102.

  Here, FIG. 8 shows an example of an embossed image. In all the examples shown in FIGS. 2 and 3, the warp and weft widths D1 and D2 are 1.6 mm, the warp and weft spacings T1 and T2 are 1.4 mm, and the embossing height HT is 0.5 mm. Yes. And the upper thread ratio in each example is as follows. 8A shows a background area of 0% and an image area of 100%, FIG. 8B shows a background area of 50%, an image area of 90%, and FIG. 8C shows a background area of 50% and an image area. Is 80%. Moreover, what produced embossing from the image of FIG.8 (b) is the photograph of FIG. This photo shows the emboss from the front. In this photograph, embossing as a fabric appears, but the pattern in the image area is hardly visible. On the other hand, the photograph in FIG. 10 is an oblique view of the embossment in FIG. 9. When viewed in this way, the picture (apple) in the image area can be visually recognized by the above-described shadow effect.

  Then, an example of the manufacturing method of the decorative sheet comprised as mentioned above is demonstrated. Moreover, in the following description, it illustrates also about the material of the decorative sheet which concerns on this embodiment. First, the resin layer A containing the foaming agent used as the surface layer 1 is adhere | attached on the base material 2 formed with the fibrous sheet, and a decorative sheet base material is formed. At this time, the resin layer A is bonded in a non-foamed state by a melt extrusion lamination method using a T die. In addition, the non-foamed transparent resin layers B and C can be provided on the front and back of the resin layer A, and three-layer extrusion can be performed. As a material composition of the resin layer A, an olefin resin such as ethylene-methacrylic acid copolymer (EMAA) or ethylene-vinyl acetate copolymer (EVA) can be used as a main raw material. As other materials, inorganic fillers, pigments, foaming agents, foaming aids, crosslinking aids, stabilizers, lubricants, and the like can be blended in a known formulation. The surface layer 1 before foaming is preferably formed into a film having a thickness of about 0.04 to 0.1 mm and foamed in a later step to form a foamed resin layer of about 0.3 to 1.0 mm.

  As the transparent resin layer B provided on the surface of the resin layer A (surface opposite to the substrate 2), an ethylene-methacrylic acid copolymer (EMAA), an ethylene-vinyl acetate copolymer (EVA), or the like is preferable. Moreover, it is preferable that thickness is 5-20 micrometers from viewpoints, such as improvement of surface strength, an improvement of stain resistance, and the prevention of glazing at the time of extrusion. On the other hand, as the transparent resin layer C provided on the back surface (surface in contact with the base material 2) of the resin layer A, an ethylene-vinyl acetate copolymer (EVA) is preferable. From the viewpoints of close contact with the base material 2 and prevention of glazing at the time of extrusion, the thickness is preferably 5 to 10 μm.

  Next, a pattern layer is provided on the resin layer A (or the transparent resin layer B). Gravure printing, flexographic printing, or the like is used to form the pattern layer. As the printing ink, a printing ink containing a colorant, a binder resin, and a solvent can be used. These inks may be known or commercially available. Furthermore, you may laminate | stack a surface protective layer on a pattern pattern layer. Also for the surface protective layer, known methods such as gravure printing, flexographic printing, film laminating, and extrusion laminating can be used. The surface protective layer may contain a known filler such as silica if the purpose is to adjust the gloss. If the surface strength is intended, those containing an ionizing radiation curable resin as a resin component are suitable. The thickness is preferably 0.1 to 15 μm.

  Subsequently, the above-mentioned decorative sheet base material may be irradiated with ionizing radiation. Foamability and strength can be adjusted by irradiating the resin layer A with an electron beam. As conditions for electron beam irradiation, an acceleration voltage of 150 to 250 kv and an irradiation amount of 10 to 70 kGy are preferable.

  When the surface layer 1 is formed on the support layer 2 as described above, subsequently, the decorative sheet base material is passed through a heating foaming furnace, and foamed so that the thickness of the surface layer 1 becomes 5 to 10 times. The heating conditions are not particularly limited as long as the foamed resin layer is formed by the decomposition of the pyrolytic foaming agent, but the furnace temperature is preferably 200 to 400 ° C.

  Embossing is formed on the outermost layer (surface layer 1) on the foamed decorative sheet substrate. The embossed concavo-convex pattern is formed by embossing (unevenness forming using an embossed plate). There are various methods for manufacturing the embossed plate. For example, the method described in JP 2010-287204 A, JP 2011-148184 A, the diameter of the yarn of the woven fabric, the properties (such as yarn fluff), the pitch, etc. Is input to form the fabric design as described above, and an embossed plate is formed based on the fabric design.

  As described above, according to this embodiment, the image layer 11 and the background region 12 are provided on the surface layer 1 on which the emboss is formed, and the warp yarn 101 becomes the upper yarn at the intersection C between the warp yarn 101 and the weft yarn 102. The yarn ratio is configured to be different between the image area 11 and the background area 12. Therefore, there is a difference in how the shadow is generated between the image area 11 and the background area 12. As a result, the boundary between the two regions becomes obvious, and the image region 11 can be visually recognized. In this way, in this embodiment, since the shadow that can be visually recognized by the way the light hits is formed by using the characteristics of the fabric, the image due to the shadow can be visually recognized in the design that can be visually recognized as a fabric-like. Can be formed. Therefore, a sense of unity as a design is increased and design properties can be improved.

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible unless it deviates from the meaning. For example, in the above embodiment, the upper thread ratio of the image area 11 is larger than the upper thread ratio of the background area 12, but this may be reversed. That is, the upper thread ratio of the background area 12 may be larger than that of the image area 11 as long as both areas can be identified by the difference in the upper thread ratio. In the above embodiment, the upper yarn ratio of the warp yarn 101 is used. However, an upper yarn ratio in which the weft yarn 102 is an upper yarn may be used. It should be provided in.

  The decorative sheet according to the embodiment employs the warp yarn 101 and the weft yarn 102 that extend continuously. For example, as shown in FIG. 11, each yarn becomes a lower yarn U in the direction in which the yarn extends. Can be cut to form a gap N. Although the magnitude | size of the clearance gap N is not specifically limited, It can be made into the space | interval between yarns at the maximum. FIG. 11 is a fabric design 2000 in which a gap N is formed by cutting the yarn across the lower thread in the fabric design of FIG. And if an emboss is formed based on this textile design 2000, the emboss of a cross section like FIG. 12 will be formed. That is, the shape of the uppermost surface of the fabric design shown in FIG. 11 appears as an emboss. Further, as a planar shape, an emboss as shown in FIG. 13 appears. In this way, since the gap N is formed in the portion where the upper thread U transitions to the lower thread L, the upper thread U portion is emphasized and visually recognized. Therefore, it is possible to make it easy to visually recognize the hidden picture existing as the image area 11. In the example of FIG. 13, the gap N is formed based on the example of FIG. 8B, and the gap is 1.5 mm.

  In the above embodiment, the warp yarn 101 and the weft yarn 102 are orthogonal to each other. However, the warp yarn 101 and the weft yarn 102 do not necessarily intersect at a right angle, and as long as the warp yarn 101 and the weft yarn 102 are knitted, they may intersect at an angle. . Moreover, in the said embodiment, although the decorative sheet is comprised with the surface layer 1 and the base material sheet 2, the decorative sheet of this invention should just have the surface layer 1 in which an emboss is formed at least. That is, the decorative sheet may be constituted by only the surface layer 1, or a plurality of layers may be laminated on the lower surface of the surface layer 1.

  In the above embodiment, there is one image region 11, but a plurality of image regions 11 may be used. In addition, the image region 11 can adopt various forms such as a pattern, a figure, and a character. The entire circumference of the image area 11 may not necessarily be surrounded by the background area 12. For example, when the image area 11 is arranged at the end of the decorative sheet, The background region 12 only needs to surround a portion that is not in contact with the end of the decorative sheet.

  Examples of the present invention will be described below. However, the present invention is not limited to the following examples.

  Here, a decorative sheet having an image region of an apple pattern as shown in FIG. 2 was produced, and five samples were produced as examples and one sample was produced as a comparative example. And this decorative sheet was arrange | positioned on the horizontal surface, and the shadow effect when illumination was irradiated from the diagonal side was verified by visual observation.

1. Preparation of decorative sheet (1) Preparation of fabric design An image (apple) in the image area is input to a personal computer and known image processing software (for example, Adobe
The density of the background area and the image area was adjusted using Photoshop). For example, the image density of the background area is 50% and the density of the image area is 80%. Subsequently, the “monochrome two gradation-error diffusion method (dither)” process of the software was applied to the image after density adjustment, thereby creating images with different appearance ratios of white and black pixels. Next, the yarn thickness, the yarn interval, etc. are input by the method described in JP 2010-287204 A, JP 2011-148184 A, and a monochrome two-tone image is read at the same time. The upper thread ratio was adjusted by matching each intersection of the warp and the warp. For example, we adjusted so that the weft thread is the upper thread for white pixels and the warp thread is the upper thread for black pixels. Thus, an embossed image of the textile design was formed.

(2) Production of embossed plate 2-1. The embossed image of the finished fabric design was converted to 10 gradations by “posterization” of “Adobe Photoshop”. Since the embossed plate is a negative plate, the image is inverted in gradation.
2-2. A resist layer was formed on the embossing cylinder with a laser plate machine (Schepers (DIGILAS)). A region having an image density of 90 to 100% (a region where the depth becomes the deepest when the embossed plate is completed) prepared in 1-1 was burned out by a laser.
2-3. The emboss cylinder was etched. The depth is 60 μm.
2-4. The resist layer of the emboss cylinder was washed and peeled off.
The process of 2-5.2-2 to 2-4 was further performed 8 times while changing the resist burnout image. The burn-out image to be used is 80 to 100% for the second etching, 70 to 100% for the third etching, 60 to 100% for the fourth etching,... 10 to 100%.
When 2-6.9 etchings were completed, the gloss of the plate surface was adjusted by etching the whole surface several μm without attaching a resist to the cylinder surface.
2-7. A chromium plating of 20 μm was applied.

(3) Production of decorative sheet substrate First, using a multi-manifold T-die extruder, a surface layer composed of three layers was extruded and formed on a support layer. The surface layer is formed by a non-foamed resin layer (adhesive layer) / foaming agent-containing resin layer / non-foamed resin layer (skin layer) from the bottom of the support layer side, and the thickness is 10 μm / 70 μm / 10 μm in order. A film was formed on the support layer. Thus, a decorative sheet base material was prepared. The extrusion conditions were such that the cylinder temperature containing the resin for forming the non-foamed resin layer (skin layer) was 115 ° C., and the cylinder temperature containing the resin composition for forming the foaming agent-containing resin layer was 110 ° C. C. And the cylinder temperature which accommodated resin for forming a non-foaming resin layer (adhesion layer) was 100 degreeC. The die temperature was 110 ° C. for all.

  Next, the surface of the decorative sheet substrate was irradiated with an electron beam (195 KV, 3 Mrad) to crosslink the foaming agent-containing resin layer and the non-foamed resin layer (skin layer). Further, a corona discharge treatment was performed on the non-foamed resin layer A. Subsequently, an abstract pattern was printed on the non-foamed resin layer (skin layer) with water-based ink “Hydric” (manufactured by Dainichi Seika Kogyo Co., Ltd.). Subsequently, the decorative sheet base material on which the abstract pattern was printed was heated in a gear oven (220 ° C. × 35 seconds) to foam the foaming agent-containing resin layer to a thickness of 500 μm.

In addition, the composition of the material which comprises the said decorative sheet base material is as follows.
(a) Skin layer EMAA resin (Nucrel N1560 "Mitsui DuPont Polychemical Co., Ltd.") 100 parts by weight
(b) Foam layer
EVA resin (Evaflex V406 "Mitsui DuPont Polychemical Co., Ltd.") 100 parts by weight Titanium oxide (Taipaque CR63 "Ishihara Sangyo Co., Ltd.") 30 parts by weight Foaming agent (AZ3050I, "Otsuka Chemical Co., Ltd.") 6 parts by weight Part kicker (Fcochem ZNS-P "ADEKA") 4.2 parts by weight
(c) Adhesive layer EVA resin (Evaflex EV150 "Mitsui DuPont Polychemical Co., Ltd.") 100 parts by weight
(d) Support layer WK665DO “manufactured by Kojinsha Co., Ltd.”
(4) Production of embossing The decorative sheet base material was pressed with the embossing plate described above, and embossed. In addition, the size of the decorative sheet was 100 mm in the vertical direction and 100 mm in the horizontal direction, and the image area was arranged in the center. The outline of the apple in the image area is about 50 mm in length and about 50 mm in width.

2. Illumination method First, put a decorative sheet on the table. The image area is positioned at the center of the sheet. Then, as shown in FIG. 14, three 40w daytime white fluorescent lamps are installed at a distance of 2 m in the direction of 20 ° from the center of the decorative sheet to the decorative sheet surface.

3. Visual method As shown in FIG. 14, an observer stands on the opposite side of the fluorescent lamp from the decorative sheet and observes at a distance of 1 m in the direction of 20 ° with respect to the decorative sheet surface.

4). Embodiments of Examples and Comparative Examples

以上の結果によれば、画像領域と背景領域とで上糸比率に差を設けている実施例は陰影効果が出ているが、上糸比率の差がない比較例は陰影を視認できていない。実施例５は、背景領域の上糸比率を低くしているが、この場合でも画像領域と背景領域とで上糸比率に差を設けると、陰影効果を奏することが分かる。 5. Experimental Results The results of the above experiments were evaluated as follows.
(1) Evaluation 1: A density difference due to shadow is not recognized between the image area and the background area, and the image area cannot be visually recognized.
(2) Evaluation 2: A density difference due to shading is recognized between the image area and the background area, and the image area can be visually recognized.
The results are as follows.

According to the above results, the example in which the difference in the upper thread ratio between the image area and the background area has a shadow effect, but the comparative example without the difference in the upper thread ratio cannot visually recognize the shadow. . In Example 5, the upper thread ratio in the background area is lowered, but even in this case, it can be seen that if a difference is provided in the upper thread ratio between the image area and the background area, a shading effect is produced.

1 surface layer 11 image area 12 background area 101 warp yarn (first yarn)
102 Weft (second yarn)

Claims (4)

A surface layer on which a plurality of first and second yarns are woven and woven to create a fabric-like embossing;
The surface layer has at least one image region representing a predetermined image, and a background region surrounding at least a part of the image region,
The upper yarn ratio in which the first yarn becomes the upper yarn at the intersection of the first and second yarns is configured to be different between the image region and the background region ,
The first thread and the second thread are cut in a direction in which the thread extends so as to sandwich a portion serving as a lower thread, thereby forming a gap.
Makeup sheet. The decorative sheet according to claim 1, wherein a difference between an upper thread ratio of the image area and an upper thread ratio of the background area is 10% or more. The decorative sheet according to claim 1 or 2 , wherein a height from the lowermost surface of the embossment of the surface layer to the upper surface of the upper thread is 0.3 to 1.0 mm. The first thread spacing between, and the respective intervals of the second yarn each other, is 0.2 to 3.0 mm, the decorative sheet according to any one of claims 1 to 3.

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