JP2003312192A - Eraser - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an eraser which has a quite new design effect. <P>SOLUTION: The eraser 1 includes a luster material-containing layer 2 containing a luster material 5, which, upon exposure to incident light, produces reflected light having a high level of brightness, and a main body layer 3 having the same composition as the conventional eraser. The eraser 1 is prepared by stacking the luster material-containing layer 2 on the upper and lower surface sides of the sheet-like main body layer 3 and integrating them with one another. Upon the entry of light into the eraser 1, the light is reflected from the luster material-containing layer 2 in its near-surface part and the luster material 5 located within the luster material-containing layer, whereby reflected light having a high level of brightness is provided. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an eraser, and more particularly to an eraser excellent in design effect.

[0002]

2. Description of the Related Art Erasers that have been conventionally used include
Those containing a resin base material such as vinyl chloride and a plasticizer,
Some include a base material such as a thermoplastic elastomer and a softening agent. The conventional eraser is obtained by kneading the above composition and molding it into a predetermined shape, and can sufficiently fulfill the function as an eraser. However, the eraser obtained by kneading and molding the above-mentioned composition is
Since it is milky white or transparent, it lacks design fun.

In the conventional eraser, a method of blending a predetermined amount of a colorant together with the raw materials and molding is adopted in order to obtain a design-oriented interest. The conventional eraser molded by such a method has a uniform hue or spot pattern or flow pattern as a whole.

[0004]

The majority of the erasers currently on the market are those which are colored in a uniform hue as described above, or which are provided with a mottled pattern or a flow pattern. Erasers are not new. Therefore, in the present invention, it is an object of the present invention to provide an eraser capable of sufficiently fulfilling the function as an eraser similarly to the conventional eraser, and further exhibiting a completely new design effect different from that of the conventional eraser. And

[0005]

Therefore, the eraser according to claim 1, which is provided to solve the above-mentioned problems, is a bright material-containing layer containing a bright material having a bright property with respect to incident light. And a body layer that exhibits reflected light of a predetermined hue with respect to incident light, and the glittering material-containing layer is laminated on the surface of the body layer.

Since the eraser of the present invention contains a glittering material having a glittering property with respect to incident light, the glittering material glitters when irradiated with light, and the appearance is as if jewels were scattered. It seems to be Taka. Therefore, according to the above-described configuration, a design effect can be obtained that is different from the conventional eraser that is simply colored in one specific color.

In the eraser of the present invention, in order to obtain the above-mentioned unique design effect, the glittering material-containing layer contains a glittering material. Usually, the glitter material contained in the glitter material-containing layer does not contribute to the erasability of the eraser. Therefore, the glittering material-containing layer forming the eraser of the present invention may be inferior in erasability to the conventional eraser. On the other hand, since the main body layer does not contain a substance such as a glitter material that may reduce the erasability, it has the same erasability as a conventional eraser. Since the eraser of the present invention has the main body layer having the same erasability as the conventional eraser in addition to the glittering material-containing layer, it has both the design effect and the erasability of the glittering material.

The invention according to claim 2 further comprises a glittering material-containing layer which contains a glittering material having a glittering property with respect to incident light, and which is partially or wholly transparent or semitransparent and an incident light. And a main body layer that exhibits reflected light of a predetermined hue, and the glittering material-containing layer is laminated on the surface of the main body layer.

In the eraser of the present invention, the luster material contained in the luster material-containing layer appears to shine brightly in the hue exhibited by the main body layer, and the appearance is associated with the Milky Way spreading in the night sky and the magnificent universe. It is what makes me. In the eraser of the present invention, the reason why the glittering material seems to shine brightly is expected to be as follows. In the following description, the glitter material does not transmit light in order to simplify the description.

The eraser of the present invention, as shown in FIG.
The glitter material-containing layer is laminated on the surface of the body layer, and the body layer 3 may be sandwiched between the glitter material-containing layer 2 as shown in FIG. 1, for example. Eraser 1 shown in FIG.
In FIG. 3, the incident light A, which is a part of the incident light irradiated to the surface side of the glitter material-containing layer 2, is shown in FIG. 3 in the glitter material 5 near the surface of the glitter material-containing layer 2. It is reflected as shown (surface reflection). In the eraser 1, part or all of the glitter material-containing layer 2 is transparent or semi-transparent, and the rest of the incident light penetrates into the glitter material-containing layer 2 as indicated by an arrow B in the figure. Therefore, a part of the irradiated incident light reaches the surface of the glittering material 5 buried inside the glittering material-containing layer 2.

The incident light B reaching the glittering material 5 buried in the glittering material-containing layer 2 is reflected on the surface of this glittering material (intra-layer reflection). The reflected light generated in the glittering material-containing layer is directed to the surface side inside the glittering material-containing layer which is transparent or semitransparent as shown by the arrow in the figure, and is emitted from the glittering material-containing layer to the outside. It In the eraser 1, the glittering material-containing layer 2 is transparent or semi-transparent, so that light attenuation is small. Therefore, the reflected light emitted from the glitter material-containing layer has a high glitter, and further enhances the glitter of the eraser 1. When the glittering material contained in the glittering material-containing layer exhibits a specific interference color with respect to the incident light, the reflected light generated by the in-layer reflection and the reflected light generated by the surface reflection. And cause interference and the like, resulting in reflected light having high glitter and exhibiting a clear interference color.

On the other hand, of the light that has entered the inside of the glitter material-containing layer, the incident light that does not collide with the glitter material contained in the glitter material-containing layer is incident on the glitter material-containing layer as indicated by arrow C in the figure. It is incident on the adjacent body layer. The incident light incident on the main body layer is reflected at the boundary surface between the bright material-containing layer and the main body layer (boundary surface reflection) as indicated by an arrow in the figure, travels inside the bright material-containing layer, and is then emitted to the outside. It Therefore, when the eraser 1 is observed from above the glittering material-containing layer 2, the background of the glittering material-containing layer looks like a hue peculiar to the main body layer.

As described above, in the eraser of the present invention, since the luster material-containing layer is transparent or translucent, in addition to the reflected light due to surface reflection, the light reflected by intra-layer reflection from inside the luster material-containing layer Occur. Further, when the glitter material contained in the eraser of the present invention exhibits a unique interference color, a phenomenon such as interference between reflected light due to surface reflection and reflected light due to intra-layer reflection occurs, resulting in extremely bright glitter. A reflected light exhibiting a high and clear interference color is observed, and a novel design effect which cannot be seen in a conventional eraser can be obtained.

Further, as described above, in the eraser of the present invention, the background of the glittering material-containing layer appears to have a hue unique to the main body layer when observed from above the glittering material-containing layer. Therefore, by changing the hue of the main body layer, various design effects can be exhibited.

In the eraser of the present invention, in order to obtain the above-mentioned unique design effect, a part or the whole of the luster color material-containing layer is molded so as to be transparent or translucent. Usually, in order to make the eraser transparent or semi-transparent, the compounding amount of the filler is reduced to no or extremely, and especially when the base material is a vinyl chloride resin, the gelation degree of the raw material is increased. Will be taken. However, the eraser made transparent or semi-transparent by the above-mentioned measures has reduced wear resistance and impaired erasability. Most of the glitter material contained in the glitter material-containing layer does not contribute to the erasability of the eraser. Therefore, the glittering material-containing layer forming the eraser of the present invention is inferior in erasability as compared with the conventional eraser.

On the other hand, the main body layer constituting the eraser of the present invention exhibits reflected light of a predetermined hue with respect to incident light, and has the same structure as a conventional eraser. Further, the main body layer has the same erasability as that of the conventional eraser because it does not contain a substance such as a luster material that may reduce the erasability. Since the eraser of the present invention has the main body layer having the same erasability as the conventional eraser in addition to the glittering material-containing layer, it has both the design effect and the erasability of the glittering material.

According to a third aspect of the invention, the glitter material contained in the glitter material-containing layer exhibits an interference color with respect to incident light, and the hue exhibited by the main body layer is a complementary color of the interference color. Alternatively, the eraser according to claim 1 or 2, wherein the difference between the complementary color and the hue is within 10 of 100 divisions based on the Munsell color method.

In the eraser of the present invention, the main body layer exhibits a complementary color to the interference color exhibited by the glittering material or a hue similar thereto. Therefore, in the eraser of the present invention, the interference color exhibited by the glittering material is emphasized by the hue of the main body layer, and a unique design effect not seen in conventional erasers can be obtained.

According to a fourth aspect of the invention, the glitter material contained in the glitter material-containing layer exhibits an interference color with respect to incident light, and the hue exhibited by the main body layer is the interference color and the hue. 10 out of 100 division based on Munsell color table
The eraser according to claim 1, wherein the eraser has a hue within the range.

The eraser of the present invention is also compounded with a glittering material that exhibits an interference color when exposed to incident light. In the eraser of the present invention, the difference in hue between the main body layer and the interference color is within 10 out of 100 divisions based on the Munsell color method. Therefore, the color of the interference color blends into the ground color of the main body layer, and only the shine is emphasized.

The invention according to claim 5 is the eraser according to any one of claims 1 to 4, wherein the main body layer exhibits a white hue with respect to incident light.

The eraser of the present invention gives an impression of high brightness as a whole because the main body layer forming the core is white and has high brightness. Further, the eraser of the present invention is one in which a glitter material-containing layer containing a glitter material having high glitter is laminated on the main body layer. Therefore, according to the above configuration, an eraser having high brightness and glitter can be prepared.

The invention according to claim 6 is the eraser according to any one of claims 1 to 4, characterized in that the main body layer exhibits a black or dark hue with respect to incident light. .

In the eraser of the present invention, since the main body layer exhibits a black or dark hue, most of the incident light transmitted through the luster color material-containing layer and the incident light directly incident on the main body layer are incident on the main body layer. Be absorbed. That is, most of the reflected light observed in the eraser of the present invention is reflected by the glittering material contained in the glittering material-containing layer. Therefore, the eraser of the present invention is prominent in reflected light from the glitter material, and has a design effect that is distinct from that of the conventional eraser.

Further, in the above-mentioned eraser, the glitter material contained in the glitter material-containing layer contains an organic substance as a metal and / or
Alternatively, a metal-coated organic luster material coated with a metal oxide, a metal-coated inorganic luster material with an inorganic substance coated with a metal and / or a metal oxide, a multi-layer resin luster material in which resin films are multi-layered, and a metal powder And one or more luster color materials selected from colored metal powder in which the surface of the metal powder is colored. (Claim 7)

The metal-coated organic luster pigment, metal-coated inorganic luster pigment, multi-layered resin luster pigment, metal powder, and colored metal powder all exhibit reflected light having high luster with respect to incident light. And can be suitably used for the above-mentioned eraser.

The invention according to claim 8 is the eraser according to any one of claims 1 to 6, characterized in that the main body layer is thicker than the glittering material-containing layer.

The eraser of the present invention is one in which a glitter material is added to the glitter material-containing layer in order to obtain a unique design effect. However, the glitter material does not contribute to the erase function which is the original function of the eraser. Absent. Therefore, the eraser of the present invention may be slightly inferior to the main body layer in erasability in the portion constituting the glittering material-containing layer. However, in the eraser of the present invention, the glitter material-containing layer containing the glitter material is thinner than the main body layer. Therefore, the eraser of the present invention is mainly composed of the main body having excellent erasability, and has a unique design effect by the glittering material and sufficient erasability.

Since the eraser of the present invention has a thin luster-containing layer, a relatively small amount of luster to be mixed in the luster-containing layer is required. Further, since the bright material-containing layer is thin, the light is hardly attenuated in the bright material-containing layer. Therefore, there is almost no attenuation of reflected light in the glitter material in the glitter material-containing layer, and the hue of the main body layer observed through the glitter material-containing layer is extremely clear.

In the above-mentioned eraser, the glitter material contained in the glitter material-containing layer has an average particle size of 10 μm or more 2
It may be composed of a small-diameter bright material having a diameter of 00 μm or less and a large-diameter bright material having an average particle diameter larger than that of the small-diameter bright material. (Claim 9)

The glitter material contained in the eraser of the present invention is
The particles have various shapes and often have individual variations. Therefore, it is appropriate to use the average particle diameter or the median particle diameter to represent the particle size. The glitter material contained in the eraser of the present invention is composed of a small-diameter glitter material having a relatively small particle diameter and a large-diameter glitter material having a larger particle diameter than the small-diameter glitter material. In the eraser of the present invention, the average particle size of the small-diameter bright material is 10 μm or more and 20
It is preferably 0 μm or less. Average particle size is 10μ
When it is less than m, the glittering material particles are too small, so that the glittering property is deteriorated and a sufficient design effect cannot be exhibited.

The eraser of the present invention contains a large-diameter luster material having an average particle size larger than that of the above-mentioned small-diameter luster material. Therefore, the eraser of the present invention is one in which, in the point-like brilliance emitted by the small-diameter glittering material upon irradiation with light, a relatively large lumpy shine due to reflection in the large-diameter glittering material is observed, and a unique design effect Is obtained.

In the above-mentioned eraser, the content of the glittering material is preferably 40.0% by weight or less based on the total amount of the glittering material-containing layer. (Claim 10)

The above-mentioned eraser cannot obtain sufficient glitter when the amount of the glitter material contained in the glitter material-containing layer is too small, but the glitter material exceeds 40% by weight in the total amount of the glitter material-containing layer. Then, the entire area of the glitter material-containing layer is filled with the glitter material, and the design effect exhibited by the combination of the glitter material and the glitter material-containing layer or the main body layer is halved.
Moreover, most of the glittering materials do not contribute to the erasability, which is the original function of the eraser. Therefore, if more than 40% by weight of the glittering material-containing layer is contained in the glittering material-containing layer, the original content of the eraser is large. The function is lost. In the eraser of the present invention, the content of the glittering material is 4 in the total amount of the glittering material-containing layer.
Since the content is 0.0% by weight or less, it has a unique design effect not found in conventional erasers and can sufficiently exhibit the erasability which is the original function of the eraser.

[0035]

BEST MODE FOR CARRYING OUT THE INVENTION The eraser of the present invention contains a glitter material having a glitter property with respect to incident light and a glitter material exhibiting a specific interference color with respect to incident light. Further, the eraser of the present invention is colored in a specific hue by adding a colorant as required. Hereinafter, the glittering material, the colorant, and other substances constituting the eraser contained in the eraser of the present invention will be described.

(Metal-Coated Organic Luminescent Material) The metal-coated organic luster material is an organic material coated with a metal and / or a metal oxide that exhibits reflected light with respect to incident light. Examples of the metal with which the organic substance is coated include aluminum, silver, nickel, titanium, chromium, molybdenum, brass and silver alloy, and among them, aluminum can be most preferably used. Further, the organic substance that coats the metal and / or the metal oxide is preferably in the form of a film.

The metal-coated organic luster material exhibits reflected light having high luster when light enters. Further, some of the metal-coated organic luster pigments emit reflected light having a unique interference color depending on the type and film thickness of the metal and / or metal oxide coated on the surface of the organic substance. The coating surface that covers the surface of the organic substance may be a single layer or a multilayer of two or more layers.

Examples of the organic substance that constitutes the metal-coated organic luster color material include polyethylene resin, polypropylene resin,
Polystyrene resin, ABS resin, methacrylic resin, vinyl chloride resin, polyethylene terephthalate resin, polybutylene terephthalate resin, AS resin, EVA resin,
Cellulose acetate resin, polycarbonate resin, polyamide resin, polyacetal resin, modified polyphenylene oxide resin, polysanfon resin, and other resins can be preferably used. Further, as the organic substance that constitutes the metal-coated organic bright material, a resin thin film that is formed flat as a whole is preferably used. Aluminum or the like is suitable as the metal or metal oxide coating the organic substance.

Of the metal-coated organic luster color materials, examples of metal and / or metal oxide-coated metal vapor-deposited materials include those obtained by vacuum-depositing aluminum on a resin thin film and coloring the surface thereof. For example, "Diamond Piece No.501 Blue" and "Diamond Pi
ece No.501 Ocean Green '', `` Diamond Piece No.501re
d `` Diamond Piece No.501 LG Gold '' `` Diamond Piece
No.530 Silver ”and the like. In addition, as a glittering material in which aluminum is vapor-deposited on an organic resin film, trade name “ELGY # 500” of Oike Kogyo Co., Ltd. can be exemplified.

In the eraser of the present invention, it is also possible to use a metal-coated organic luster material (hereinafter referred to as a holographic luster material) obtained by vapor-depositing a metal film on a small piece of a holographic film as a luster material. The holographic luster material is a material that can obtain a three-dimensional luster effect due to interference or the like.
When irradiated with light including other wavelengths such as sunlight and white light, interference light with various hues and gloss is generated.

The above-mentioned metal-coated organic luster color material has a strip shape,
It is also possible to mold into any shape such as a needle shape, a polygonal shape, a star shape, a heart shape, a crescent shape, a diamond shape and the like. According to this structure, a novel design effect which cannot be found in the conventional eraser can be obtained.

(Metal-Coated Inorganic Brightening Material) The metal-coated inorganic brightening material is an inorganic material coated with a metal and / or a metal oxide. The metal-coated inorganic glitter material emits reflected light having high glitter when light is incident, and some of them emit reflected light having a unique interference color. Therefore, the eraser containing the glittering material has a unique design effect full of glittering properties. The coating surface for coating the surface of the inorganic substance may be a single layer or a multilayer of two or more layers. When the coating surface is a multi-layered surface, each coating surface presents reflected light, so that the reflected light and the interference color are further emphasized.

Mica is preferably used as the inorganic substance used in the metal-coated inorganic luster color material. Further, as the metal and / or metal oxide coating the inorganic substance, titanium, titanium oxide, iron oxide and the like can be preferably used. In particular, the metal-coated inorganic luster color material in which mica is coated with titanium oxide and iron oxide has a coating surface formed of titanium oxide,
The reflected light interferes with each other to give a unique color or a rainbow interference color. Further, since the glittering material has a coated surface made of iron oxide, the coated surface further enhances the interference color. Therefore, the eraser of the present invention containing the glitter material has an enhanced interference color and a bright feeling.

As a kind of metal-coated inorganic luster color material, one having a coating layer of a metal or a metal oxide and a coating layer of an organic pigment is known as an inorganic substance.

A metal-coated inorganic luster material having a coating layer of a metal oxide or the like and a coating layer of an organic pigment has a high brilliance and reflects a specific interference color on the coating surface composed of a metal and / or a metal oxide. Exhibit light. Further, the reflected light is further emphasized by the coating surface composed of the organic pigment. Therefore, the eraser of the present invention has an interference color that is outstandingly bright.

Mica is also suitable as the inorganic substance in the metal-coated inorganic bright material having a coating layer of a metal oxide and a coating layer of an organic pigment. Further, in particular, the metal-coated inorganic luster color material coated with titanium oxide and an organic pigment on mica is
The coated surface composed of titanium oxide emits reflected light of high interference and a unique interference color, and the coated surface composed of organic pigment further emphasizes the interference color of the reflected light. Therefore, the eraser of the present invention containing the above-mentioned pigment has a strikingly bright glittering interference color.

Among the metal-coated inorganic luster pigments, iron (III) oxide is given as an example of the inorganic luster pigment coated with metal and / or metal oxide by metal vapor deposition or the like.
There is aluminum coated with, for example, trade name "PaliocromGold L2000 / L2002", manufactured by BASF Corporation, "Pal
iocrom Gold L2020 / L2022, Paliocrom Gold L202
5 ”and“ Paliocrom Gold L2800 ”are available. Also iron oxide (I
Mica coated with II) can be used. For example, the product name "Paliocrom Red Gold L25" manufactured by BASF Ltd.
00 "and" Paliocrom Red L4000 ". Further, aluminum-manganese-coated mica-like iron oxide (III) can be used. For example, the product name "Palioc" manufactured by BASF Ltd.
"rom Copper L3000" and "Palioc rom Copper L3001". Further, mica coated with reduced titanium dioxide can be used. For example, product names "Paliocrom Blue Silver L6000" manufactured by BASF Ltd., "Paliocrom Blue"
There is Silver L6001 ". Further, mica coated with titanium dioxide can also be used.

Further, mica coated with reduced titanium dioxide can be used as the glittering material contained in the eraser of the present invention. For example, the product name "Pas manufactured by BASF Ltd.
liocromBlueSilverL6000, PaliocromBlueSilverL60
There is 01 ”. In addition, the product name “Santa Fe Desert Blush” manufactured by Engelhard Co., Ltd. (the company code 9362) is a luster material in which mica is coated with titanium oxide and iron oxide.
Z), "Santa Fe Plum" (company code 9663
Z), "Santa Fe KiwiGreen" (company code 986)
2Z), "Santa Fe Adobe Green" (Company code 98
63Z) can also be used. In addition, Engelhard's product name "Dynacolor BB" (Company code 96
39ZB15C), "Dynacolor GB" (Company code
9639ZG7C), "Dynacolor RB" (Company code 9639ZV19A) and the like, and a glittering material in which titanium oxide and an organic pigment are coated on mica can also be suitably used as the glittering material contained in the eraser of the present invention.

Further, the glass flake glitter which is a flaky glass coated with a metal or a metal oxide is also a metal-coated inorganic glitter which can be suitably used as a glitter contained in the eraser of the present invention. The glass flake luster color material is a mirror-like object, and is a luster color material that shines with a predetermined interference color against incident light. The eraser containing the glass flake luster material exhibits a unique design effect due to the interference color full of the luster of reflected light.

The metal or metal oxide coating the glass is silver, nickel, titanium, chromium, molybdenum, brass,
Any material such as silver alloy or titanium oxide may be used as long as it exhibits reflected light of a predetermined interference color with respect to incident light when it is coated on glass. Further, any method such as an electroless plating method or a sputtering method may be used for coating the glass with the metal or the metal oxide.

Among the above-mentioned glass flake luster color materials, those in which the metal coating the glass is silver or nickel have particularly high light reflectance and strong brilliance. Further, the glittering material in which the glass is coated with titanium exhibits a color peculiar to the incident light or an interference color of rainbow due to the interference of light. Further, a glass flake luster color material obtained by coating glass with titanium oxide is a luster color material exhibiting a peculiar color or an iridescent interference color. Further, the reflected light emitted from the various glittering materials described above has a strong glittering feeling because the surface smoothness of the glass is high. Among the glass flake luster pigments, the glass coated with silver, nickel, titanium, or titanium oxide has a particularly high luster, and the eraser containing the glass flake luster pigment has a more unique design effect.

Among the glass flake luster pigments, there is one in which flaky glass is coated with a metal by an electroless plating method. As an example, silver-coated glass is manufactured by Nippon Sheet Glass Co., Ltd. under the trade name "Metashine". RCFSX-5480PS "," Metashine RCFSX-5230PS "," Metashine RCFSX- "
5150PS "(Company code 9023 to 9025),
"Metashine RC FSX-5090PS02", "Metashine RC
There are FSX-5090PS06 "and" Metashine RCFSX-5030PS ". Also made by Nippon Sheet Glass Co., Ltd., a glass flake luster material coated with nickel, trade name "Metashine RCFSX-5480NS or NB", "Metashine RCFSX-5230NS or NB", "Metashine RCFSX".
-5150NS or same NB "," Metashine RCFSX-5090NS
Or the same NB ”,“ Metashine RCFSX-5030NS or the same ”
NB ”(above company code 9041-9045 9050
~ 9054) can be adopted. Glass flake glitter coated with titanium, trade name "Metashine RCFS
X-5090RC "(Company code 8052, 8053 806
9-8071) can be adopted. Further, as an example of the glittering material obtained by coating the glass flakes with titanium oxide, the trade name “Metashine RC9555 or 9548 or 9548” can be mentioned.

Further, a glass flake luster color material in which flaky glass is coated with a metal by a sputtering method can also be used. For example, product names "Crystal Color GF2125", "Crystal Color GF2125-M", "Crystal Color GF21" manufactured by Toyo Aluminum Co., Ltd., which are coated with silver.
40 "and" Crystal Color GF2140-M "are available. Also,
The product name "Crystal Color GF2525", which is coated with nickel, chromium and molybdenum, "Crystal Color"
GF2525-M "," Crystal Color GF2540 "and" Crystal Color GF2540-M "are available. In addition, there is a product name "GF250" manufactured by the company coated with brass, a product name "GF1345" manufactured by the company coated with silver alloy, and a product name "GF1445" manufactured by the company coated with titanium.

The above-mentioned metal-coated inorganic bright material preferably has an average particle size of 10 μm or more and 10 mm or less.
When the average particle size is less than 10 μm, the above-mentioned metal-coated inorganic luster color material particles are too small, resulting in poor luster.
If it exceeds m, the dispersibility in the eraser and the erasability of the eraser itself deteriorate.

The above metal-coated inorganic luster pigment is a mixture of a small-diameter luster pigment having an average particle diameter of 10 μm or more and 200 μm or less and a large-diameter luster pigment having an average particle diameter larger than that of the small-diameter luster pigment. Is also good. The large-diameter bright material preferably has an average particle size of 6 mm, but the average particle size is 6 m.
When it exceeds m, the addition amount of the large diameter luster pigment is preferably as small as possible in order to maintain the dispersibility in the eraser and the erasability.

The above-mentioned metal-coated inorganic luster color material has a strip shape,
It is also possible to mold into any shape such as a needle shape, a polygonal shape, a star shape, a heart shape, a crescent shape, a diamond shape and the like. According to this structure, a novel design effect which cannot be found in the conventional eraser can be obtained.

In the eraser of the present invention, the content of the glittering material is preferably 40% by weight or less based on the total amount of the glittering material-containing layer. If the content of the metal-coated inorganic luster material is too small relative to the total amount of the luster material-containing layer, sufficient luster cannot be obtained and the design effect is halved. On the other hand, when the glittering material exceeds 40% by weight in the total amount of the glittering material-containing layer, the entire area of the glittering material-containing layer is filled with the glittering material, and a design developed by the combination of the glittering material and the glittering material-containing layer or the main body layer. Not only the effect is halved, but the erasability, which is the original function of the eraser, may be impaired.

(Multi-Layered Resin Luminescent Material) The multi-layered resin glittering material is a resin which is formed into a film shape and superposed in multiple layers to be integrated and miniaturized. The multi-layered resin glitter material exhibits reflected light with high glitter when light is incident, and exhibits unique interference light depending on the type of resin to be laminated, the film thickness of the film-shaped resin, and rainbow. There are some glittering colors.

The resin constituting the multi-layered resin glitter material includes
A resin such as an acrylic resin or a polyester resin is preferably used. Further, for the eraser of the present invention, it is also possible to use a colored type multi-layer resin glitter material obtained by dyeing the above-mentioned multi-layer resin glitter material with a dye exhibiting a specific hue. Among the multi-layered resin luster materials, a film-shaped acrylic resin and a film-shaped polyethylene terephthalate resin are alternately laminated in several dozen layers. X-40 "etc.

(Metallic Powder / Colored Metallic Powder) Metallic powder that exhibits reflected light with respect to incident light can also be used as a glittering material to be incorporated in the eraser of the present invention. Specifically, aluminum,
Examples thereof include silver, nickel, titanium, chromium, molybdenum, brass and silver alloy, and among them, aluminum can be most preferably used. The metal powder may have any shape, but it is preferable that the metal powder has a flake shape so as to increase the light reflection area. In addition, the surface of the metal powder is mirror-finished, and the metal powder colored with a dye or the like gives a stronger glittering feeling. As an example of the metal powder used in the present invention, part number H2 of the product name “ELGY” series manufactured by Oike Kogyo Co., Ltd.
5 silver, same part number DG Gold, same part number Green, same part number Bl
Examples include ue, the same product number Red, the same product number Maroon, and the same product number Black.

(Colorant) The colorant used in the eraser of the present invention has a hue of the same system as the interference color generated by the incident light of the glitter material contained in the glitter material-containing layer, and a relationship of the interference color and the complementary color. Hues and hues close to these hues, that is, the difference in hue from the interference color can be within 10 in 100 divisions based on the Munsell color specification method. As an example of the colorant, as a colorant exhibiting a blue hue when sunlight is incident light, C.I. I.
There is GN Pigment Blue-15. Similarly, when sunlight is incident light, as a colorant exhibiting a green hue,
C. I. There is GN Pigment Green-7.

The colorant used in the eraser of the present invention may exhibit a black or dark hue with respect to incident light. As an example thereof, C.I. I. GN Pigment Black-7 and C.I. I. GN Pigm
Examples of colorants include ent Black-28.

(Other Additives) In the eraser of the present invention, the main body layer and the luster color material-containing layer each contain a base material, a plasticizer, a softening agent and the like as in the conventional eraser. When the main body layer and / or luster color material-containing layer of the eraser of the present invention is composed of a plastic-based composition, the base material may be either a synthetic polymer or a natural polymer. As the organic polymer, a resin such as a thermosetting resin or a thermoplastic resin, or rubber can be used.

The base material constituting the eraser of the present invention includes polyvinyl chloride, vinyl chloride-vinyl acetate resin, vinyl chloride resin such as vinyl chloride-ethylene-vinyl acetate resin, ethylene-vinyl acetate resin and the like. Vinyl acetate resin and the like can be preferably used.

In the eraser of the present invention, rubbers represented by natural rubber, styrene-butadiene rubber, nitrile-butadiene rubber and the like can be adopted as the porous structure. The eraser of the present invention, as a porous structure, cotton, silk, natural fibers such as hemp, cellulosic fibers,
It is also possible to enclose various fibers such as synthetic fibers represented by ester fibers, acrylic fibers, amide fibers and the like.

Further, as the porous structure to be included in the eraser of the present invention, a melamine resin, an epoxy resin,
Thermosetting resin such as urethane resin, urea resin, phenol resin, styrene resin such as polystyrene, ester resin such as polyester, acrylic resin such as polyacrylate, olefin resin such as polyethylene, poly It is also possible to employ various resins such as thermoplastic resins such as vinyl chloride resins such as vinyl chloride, and resins such as elastomers.

The plasticizer may be any plasticizer that can plasticize the contained thermoplastic resin. Examples of plasticizers that can be preferably used in the eraser of the present invention include phthalate plasticizers such as dioctyl phthalate and diheptyl phthalate.

When the main body layer and / or luster material-containing layer of the eraser of the present invention is a plastic type, in addition to the above-mentioned base material and plasticizer, an abrasive, calcium carbonate, magnesium carbonate, magnesium oxide, silica, Talc, clay, diatomaceous earth, quartz powder, alumina, alumina silicate,
It is possible to add fillers such as mica, metal soaps, barium-zinc stabilizers, calcium-zinc stabilizers, magnesium-zinc stabilizers, colorants, fragrances, antibacterial agents, surfactants and glycols. it can.

When the main body layer and / or the luster pigment-containing layer is composed of a plastic eraser, the proportion of the resin constituting the substrate is 10 to 80% by weight based on the total amount of the main body layer or the luster pigment-containing layer. Preferably about 20 to 20
It is preferably about 70% by weight. Further, the plasticizer is 10 to the total amount of the main body layer or the luster color material-containing layer.
80% by weight is preferable and 20 to 70 is contained.
It is desirable that the amount is about wt%.

In the eraser of the present invention, the main body layer and / or the glittering material-containing layer may be made of a rubber composition. In this case, the main body layer and / or the luster material-containing layer are made of natural rubber, styrene-butadiene rubber, nitrile-butadiene rubber, or other suitable rubber component, factis, softening agent, sulfur, vulcanization accelerator, filler, antioxidant. ,
The colorant, the fragrance, the antibacterial agent, etc. When the main body layer and / or the luster color material-containing layer is an elastomer composition, it can be composed of a thermoplastic elastomer, a softening agent, a filler, a stabilizer, a coloring agent, a fragrance, an antibacterial agent and the like.

In the eraser of the present invention, the main body layer and / or the luster color material-containing layer contain a color-changing dye component (pressure-sensitive color-changing dye component) composed of pressure-sensitive microcapsules which are crushed by rubbing force. It is also possible to include a color-changing dye component (thermosensitive color-changing dye component) containing a heat-sensitive coloring component that changes color by abrasion heat.

In the eraser of the present invention, if necessary, a weather resistance stabilizer, a heat resistance stabilizer, an antistatic agent, a foaming agent, a release agent, a lubricant, a
A nucleating agent, a plasticizer, an antiaging agent, an antioxidant, etc. can be added. Further, other pigments can be added.

[0073]

Example 1 Polyvinyl chloride (product name ZEST P21 manufactured by Shin-Daiichi Polyvinyl chloride Co., Ltd.) was adopted as a base material, and 60 parts of DOP (Di
Octyl Phthalate (Dioctyl phthalate) (Product name: Sanso Sizer DOP manufactured by Shin Nippon Rika Co., Ltd.) and 25 parts of calcium bicarbonate (Product name: Ryton A- manufactured by Bihoku Powder Co., Ltd.)
4), 0.7 parts of Mg-Zn stabilizer (trade name EMBILIZERR-23L manufactured by Tokyo Fine Chemicals), and 2.0 parts of carbon black (C.I.GN Pigment Blac as a colorant).
k-7) was mixed, and these were thoroughly mixed with a kneader while heating, and then compressed into a sheet using a sheeting roll to form the main body layer B1.

In this embodiment, the main body layer B1 contains carbon black as a colorant, so that the whole body is colored black, and most of the light incident on the main body layer B1 is incident on the main body layer B1. Be absorbed. Therefore, the body layer B1
Causes almost no reflection of light on the surface.

On the other hand, polyvinyl chloride (trade name ZEST P21 manufactured by Shin-Daiichi Polyvinyl chloride Co., Ltd.) was used as a base material, and 60 parts of the plasticizer DOP (Diocty) was used for 40 parts of the base material.
l Phthalate dioctyl phthalate) (product name Sanso Sizer DOP manufactured by Shin Nippon Rika Co., Ltd.) and 0.7 parts M
g-Zn stabilizer (trade name EM manufactured by Tokyo Fine Chemicals
BILIZER R-23L) and 0.5 part of a multi-layered resin luster pigment (Crystal Color Diamond X-40 manufactured by Diamond Industry Co., Ltd.) as a luster pigment, and after thoroughly mixing them with a kneader while heating A glittering material-containing layer A1 thinner than the main body layer B1 was formed by compressing into a sheet shape using a sheeting roll.

Unlike the main body layer B1, the bright material-containing layer A1 does not contain calcium bicarbonate. Therefore, the glittering material-containing layer A1 was transparent or semi-transparent, and the light incident on the front surface was transmitted to the back surface side.

As shown in FIG. 2, the bright material-containing layer A is provided on the upper surface side and the lower surface side of the sheet-like main body layer B1 described above.
The layered product of 1 was set in a mold, heated and pressed, and further molded into a predetermined shape to form an eraser C1 having a three-layer structure in which the main body layer was sandwiched by the glittering material-containing layers.

In the eraser C1 of this embodiment, the glitter material-containing layer A1 is wholly transparent and the main body layer B1 is wholly black. Therefore, in the eraser C1, the metal-coated organic bright material scattered in the bright material-containing layer A1 reflects incident light and shines brightly. In addition, the eraser C1 of this embodiment
The transparent material-containing layer A1 is transparent, and the bright material-containing layer A1 is
Is thinner than the main body layer B1, so that part of the incident light is not attenuated and the bright material in the bright material-containing layer A1 and the main body layer B1.
Reach 1. Therefore, the eraser C1 was also excellent in brilliance, with the brilliance of the brilliant material in the brilliant material-containing layer A1 being observed. As described above, since the eraser C1 contains the black colorant in the body layer B1, most of the incident light reaching the body layer B1 is absorbed by the body layer B1. Therefore, in the eraser C1 of the present example, the reflected light from the glittering material was conspicuous, and a unique design effect not found in the conventional eraser was obtained.

The glittering material-containing layer A1 constituting the eraser C1 of this embodiment is slightly inferior in erasability to the conventional eraser because the glittering material contained therein has no erasability. Met. On the other hand, the main body layer B1 contained calcium bicarbonate and was formed of the same constituent material as that of the conventional eraser, and thus was excellent in erasability.
Therefore, the eraser C1 of the present embodiment is the bright material-containing layer A
1 had a unique design effect and excellent erasability by the main body layer B1.

(Example 2) Instead of the carbon black which is the colorant of the main body layer B1 of the eraser C1 of Example 1 described above, a colorant (C.IG which exhibits a blue hue with respect to incident light).
1.5 parts of N Pigment Blue-15) was mixed, and these were sufficiently mixed with a kneader while heating, and then compressed into a sheet using a sheeting roll to form a main body layer B2.

On the other hand, instead of the metal-coated organic luster material (Crystal Color Diamond X-40 manufactured by Diamond Industry Co., Ltd.) contained in the luster material-containing layer A1 in Example 1 described above, the metal-coated organic luster material. (Diamond Industry Co., Ltd., trade name Diamond Piece NO501 Blue) was blended and mixed with a stirrer to substantially evenly disperse the metal-coated organic luster pigment to form a sol-shaped luster pigment-containing layer A2.

Then, the main body layer B2 described above is set in a mold, and the sol-like bright material-containing layer A2 in which the metal-coated organic bright material is dispersed is poured into the mold, and hot pressing is carried out, whereby the main body layer An eraser C2 having a three-layer structure in which B2 was sandwiched by the glitter material-containing layer A2 was prepared.

The main body layer B2 of the eraser C2 of this embodiment is colored blue as a whole. The metal-coated organic glitter material contained in the glitter material-containing layer A2 exhibits a blue interference color with respect to incident light. That is, eraser C2
Indicates that the interference color exhibited by the glitter material is in the same system as the hue exhibited by the main body layer. Further, in the present example, since the glitter material-containing layer A2 is entirely translucent, when the eraser C2 is observed from above the glitter material-containing layer A2, the background color of the main body layer B2 can be seen through. Therefore, the eraser C2 of this embodiment
, The color of the luster material melted into the ground color of the main body layer, and only the brilliance was emphasized, which was noticeable.

The eraser C2 of this embodiment is obtained by pouring the sol-like glittering material-containing layer A2 into a mold and applying a heat press to coat the glittering material-containing layer A2 on the surface of the main body layer B2. As compared with the method of manufacturing the eraser C1 of Example 1, the film thickness of the bright material-containing layer could be made thinner. Therefore, in the eraser C2 of this example, the attenuation of light in the glitter material-containing layer A2 was extremely small. Also,
Since the glitter material-containing layer A2 is thin, the glitter material content is small. Therefore, according to the above-mentioned constitution, it was possible to prepare the eraser C2 in which the brilliance emitted by the glittering material can be clearly seen even when the amount of the glittering material is small.

(Example 3) Polyvinyl chloride (trade name ZEST P21 manufactured by Shin-Daiichi Vinyl Co., Ltd.) was used as a base material, and 60 parts of the plasticizer DO was used for 40 parts of the base material.
P (Dioctyl Phthalate dioctyl phthalate) (product name Sanso Sizer DOP manufactured by Shin Nippon Rika Co., Ltd.) and 2
5 parts of calcium bicarbonate (Product name Ryton A-4 manufactured by Bihoku Powder Co., Ltd.) and 0.7 part of Mg-Zn-based stabilizer (Product name EMBILIZER R-23L manufactured by Tokyo Fine Chemicals) are mixed, and these are mixed together. After mixing thoroughly with a kneader while heating,
The main body layer B3 was formed by compressing into a sheet using a sheeting roll.

In this embodiment, the main body layer B3 contains calcium bicarbonate, but does not contain a coloring agent that exhibits reflected light of a specific hue with respect to incident light. Therefore, the main body layer 3 of the present embodiment is colored white or a hue similar to white as a whole, and has high brightness.

The bright material-containing layer A of Example 1 described above is also used.
Polyvinyl chloride (made by Shin-Daiichi PVC Co., Ltd.)
Product name ZEST P21) 40 parts, 60 parts DOP (product name Sanso Sizer DOP manufactured by Shin Nippon Rika Co., Ltd.), and 0.
7 parts of Mg-Zn stabilizer (manufactured by Tokyo Fine Chemicals
Product name EMBILIZER R-23L) and 0.5 parts of luster material (Diamond Industry Co., Ltd. product name Rainbow Flake)
A sheet-like bright material-containing layer A3 containing crystal No. 55) was prepared.

The bright material-containing layer A3 does not contain calcium bicarbonate. Therefore, the glittering material-containing layer A3 was semitransparent, and the light incident on the front surface was transmitted to the back surface side.

The sheet-like main body layer B3 sandwiched between the glittering material-containing layers A3 is set in a mold, hot-pressed, and then molded into a predetermined shape to form an eraser C3 having a three-layer structure. Was molded.

The eraser C3 was colored white as a whole because the main body layer B3 contained no coloring agent. Also,
The bright material-containing layer A3 covering the main body layer B3 was semitransparent as a whole. Therefore, when the eraser C3 was observed from the glittering material-containing layer A3 side, the ground color appeared whitish and the brightness was felt high. Further, since the glittering material-containing layer A3 is semitransparent, the light is hardly attenuated in the glittering material-containing layer A3. Therefore, the eraser 3 of this embodiment
Was observed with almost no attenuation of the reflected light from the glitter material contained in the glitter material-containing layer A3.
Therefore, the eraser 3 has a high brightness as a whole, and the reflected light emitted by the glittering materials scattered in the glittering material-containing layer A3 can be clearly observed.

(Example 4) Polyvinyl chloride (trade name ZEST P21 manufactured by Shin-Daiichi Polyvinyl chloride Co., Ltd.) was adopted as a base material, and 60 parts of the plasticizer DO was used for 40 parts of the base material.
P (Dioctyl Phthalate dioctyl phthalate) (product name Sanso Sizer DOP manufactured by Shin Nippon Rika Co., Ltd.) and 2
5 parts calcium bicarbonate (Product name Ryton A-4 manufactured by Bihoku Powder Co., Ltd.), 0.7 part Mg-Zn stabilizer (product name EMBILIZER R-23L manufactured by Tokyo Fine Chemicals), and metal-coated organic luster pigment (Diamond Industry Co., Ltd., product name: Diamond Hologram HG-S100) is mixed, and these are thoroughly mixed with a kneader while heating, and then compressed into a sheet using a sheeting roll to form a glittering material-containing layer A4. did. In this example, the eraser C4 was prepared by molding the glittering material-containing layer A4 into a predetermined shape.

The metal-coated organic luster pigment contained in the eraser C4 is a luster pigment which shines in rainbow colors with respect to incident light,
The hue of the reflected light changes depending on the angle of observation. The eraser C4 was entirely composed of the luster color material-containing layer A4, and the background color was white. Eraser C4
Since the corners and the surface are abraded with use, even when observed from one direction, the surfaces facing various angles are exposed. Therefore, when observing the eraser C4, reflected light of various shades could be seen. Also,
When the corners and the surface of the eraser C4 of the present example were scraped as it was used, the glittering material contained inside appeared one after another on the surface side, and the glittering feeling was maintained forever.

The glitter material contained in the eraser C4 has a hexagonal planar shape. Further, since the eraser C4 of the present invention is formed by molding the raw materials mixed in the kneader into a sheet using a sheeting roll, most of the glittering materials contained in the eraser C4 are oriented in a certain direction with respect to the eraser C4. The hexagonal plane was substantially parallel to the surface of the eraser C4. Therefore, when the eraser C4 was observed, reflected light having a hexagonal shape and high glitter was confirmed, and a unique design effect which was not found in the conventional eraser was obtained.

(Embodiment 5) The eraser C5 of this embodiment is
The above-mentioned eraser C2 of Example 2 has a main body layer B2 on which a glittering material-containing layer A5 described later is laminated. The glittering material-containing layer A5 was used as a base material in an amount of 60 parts with respect to 40 parts of polyvinyl chloride (product name ZEST P21 manufactured by Shin-Daiichi PVC Co., Ltd.).
Part of the plasticizer DOP (Dioctyl Phthalate dioctyl phthalate) (product name Sanso Sizer DOP manufactured by Shin Nippon Rika Co., Ltd.) and 0.7 part of Mg-Zn stabilizer (product name EMBILIZER R-23L manufactured by Tokyo Fine Chemical) )When,
0.5 parts of metal-coated organic luster pigment as a luster pigment (Diamond Hologram HG- manufactured by Diamond Industry Co., Ltd.)
S701-10EP) and was prepared in a sol form in the same manner as the glitter material-containing layer A2 of the eraser C2 described above.

The eraser C5 was prepared in the same manner as the eraser C2 of Example 2 described above. That is, the main body layer B2 compressed into a sheet using a sheeting roll is set in a mold, and the raw materials are mixed in the mold with a stirrer so that the metal-coated organic luster color material is dispersed substantially evenly in a sol form. Then, the luster color material-containing layer A5 was poured and integrated by being hot pressed. The eraser C5 had a three-layer structure in which the main body layer B2 was sandwiched by the glitter material-containing layer A5.

The bright material contained in the bright material-containing layer A5 has a needle-like planar shape, and the hue of the reflected light changes depending on the angle of observation. Bright material-containing layer A5
Is transparent as a whole, the reflected light of the glittering material contained therein is also observed. Therefore, the eraser C5 of this example was rich in brilliance, and a unique design effect not found in conventional erasers was obtained.

(Embodiment 6) The eraser C6 of this embodiment is
It is prepared by laminating a luster color material-containing layer A6 described later on the surface of the main body layer B1 of the eraser C1 of the first embodiment described above. The main body layer B1 was produced in the same manner as in the above-mentioned first embodiment, and the whole body was colored black. In addition, the glittering material-containing layer A6 contains a metal-coated organic glittering material (Diamond Industry Co., Ltd., trade name: Diamond Hologram Heart HG-300EP) in place of the above-described glittering material of the glittering material-containing layer A1 of Example 1. After being sufficiently mixed with a kneader while heating, they are formed into a sheet thinner than the main body layer B1 by compressing into a sheet using a sheeting roll. The eraser C6 was formed by sandwiching the sheet-shaped main body layer B3 with the glittering material-containing layer A3, performing hot pressing, and then forming the sheet into a predetermined shape.

The glitter material contained in the eraser C6 is
The plane shape was a heart shape, and the hue of the reflected light changed depending on the angle of observation. Bright material-containing layer A6
In the above, since the raw material was formed into a sheet using a sheeting roll, most of the contained glittering materials were oriented in a certain direction.

The glitter material-containing layer A6 was entirely transparent. Therefore, when observing the eraser C6, the reflected light from the glittering material on the surface side and the reflected light from the glittering material contained therein were emphasized, and the glittering property of the reflected light was emphasized. In the eraser C6 of this example, the main body layer B1 was black, and most of the incident light transmitted through the glitter material-containing layer A6 was absorbed, so that the glitter of the reflected light was further emphasized. Therefore, when the glittering material-containing layer A6 is observed from above, glittering heart-shaped reflected light is observed.

Example 7 A green colorant (C.I.GN Pigment Green-7) was blended in place of carbon black, which is the colorant of the main body layer B1 employed in Example 1 described above, After thoroughly mixing these with a kneader while heating,
The main body layer B4 was formed by compressing into a sheet using a sheeting roll.

On the other hand, in place of the glitter material of the glitter material-containing layer A6 employed in Example 6 described above, a metal-coated inorganic glitter material exhibiting a green interference color (trade name, manufactured by Engelhard Co., Ltd.)
Santa Fe9863Z) was blended, and these were sufficiently mixed with a kneader while heating, and then compressed into a sheet using a sheeting roll to form a glittering material-containing layer A7.

Then, the bright material-containing layer A7 was laminated on the upper surface side and the lower surface side of the main body layer B4, and hot pressed to form a predetermined shape, whereby the main material layer B4 was sandwiched by the bright material-containing layer A7. Eraser C7 having a three-layer structure was molded.

In the eraser C7 of this example, the glitter material-containing layer A7 was wholly transparent and the main body layer B1 was wholly green. The eraser C7 in this example is the glitter material-containing layer A.
Both the interference color of the glittering material contained in No. 7 and the main body layer are green. Therefore, in the eraser C7 of this example, the color of the interference color was dissolved in the background color of the main body layer, and only the brilliance was emphasized, and the unique design effect not seen in the conventional eraser was obtained.

(Example 8) Instead of the metal-coated inorganic bright material contained in the bright material-containing layer A7 of the above-mentioned Example 7, a colored metal powder showing red reflected light with respect to incident light (Diamond Industry) was used. Brand name Diamond Piece H540 Maroon manufactured by Co., Ltd. was mixed to prepare a glitter material containing layer A8. An eraser C8 was prepared by heating and pressing the main body layer B4 sandwiched by the glitter material-containing layer A8.

In the eraser C8, the glitter material-containing layer A8 was transparent, and the hue of the main body layer B4 was seen through the glitter material-containing layer A8. Further, since the glittering material-containing layer A8 contains colored metal powder, when the eraser C8 is viewed from above the glittering material-containing layer A8, innumerable spotted red reflected light is contained in the green background color. Was observed. Here, the eraser C8 is the body layer B4.
Is green, while the glittering material emits red reflected light. That is, the eraser C8 has a complementary color relationship between the hue of the main body layer B4 and the hue of the reflected light of the glittering material. Therefore, the eraser C8 has a unique design effect which is not seen in the conventional eraser because the reflected light of the glittering material is conspicuous.

(Embodiment 9) The eraser C9 of this embodiment is
Similar to the eraser C6 of Example 6, the black main body layer B1 is provided. The glittering material-containing layer A9 that constitutes the eraser C9 is the same as the constituent material of the glittering material-containing layer A6 of Example 6 described above, which is a metal powder exhibiting a metallic luster with respect to incident light (Oike Industry Co., Ltd., trade name LJ No. 25) was added, and the bright material-containing layer A4 was produced by the same manufacturing method. That is,
The glittering material-containing layer A9 is composed of 40 parts of polyvinyl chloride (trade name: ZEST P21 manufactured by Shin-Dai-ichi PVC Co., Ltd.) which is a base material, and DOP (Dioctyl Phthalate dioctyl phthalate) which is a plasticizer (a product of Shin Nippon Rika Co. Famous Santhosizer DOP
) Is mixed with 0.7 part of a Mg-Zn stabilizer (trade name: EMBILIZER R-23L manufactured by Tokyo Fine Chemical Co., Ltd.), and 0.2 part of a metal-coated organic luster material (Diamond Industry Co., Ltd.) as a luster material. Product name: Diamond Hologram Heart HG-S300EP) and 0.3 parts of metal powder (Oike Industry product name: LJ No. 25) are added.

The glittering material-containing layer A9 is a mixture of a glittering material whose plane shape is a heart shape and the hue of reflected light changes depending on the angle of observation, and a glittering material which is granular and has a metallic luster with respect to the incident light. is there. The heart-shaped glitter material (large-diameter glitter material) contained in the glitter-containing layer A9 has a larger average particle size than the granular glitter material (small-diameter glitter material). for that reason,
Eraser C9 has a unique lump that is different from the conventional eraser and the above-mentioned eraser, in that among the spot-like brilliance emitted by the small-diameter luster material, a relatively large lump of luster is observed due to the reflection in the large-diameter luster material. A design effect was obtained.

Although the eraser of each of the above-described examples has a triple-layer structure in which the sheet-shaped main body layer is sandwiched between the sheet-shaped glittering material-containing layers, the present invention is not limited to this. The glitter material-containing layer may be laminated only on one surface of the main body layer. Further, in each of the above examples, the main body layer and the glittering material-containing layer laminated on the main body layer each have a single-layer structure, but may have a multi-layer structure.

Although both the main body layer and the luster color material-containing layer forming the eraser of the above-mentioned examples were sheet-shaped, the present invention is not limited to this, and as shown in FIG. 4, for example. In addition, it is also possible to adopt a configuration in which the spherical body layer is coated with the glittering material-containing layer.

[0110]

The eraser of the present invention is provided with a glittering material-containing layer containing a glittering material having a glittering property with respect to incident light, and therefore the glittering material shines brightly when irradiated with light, It has a unique design effect not seen in conventional erasers. When the luster material-containing layer is transparent or semitransparent like the eraser according to claim 2, light reflection occurs even in the luster material embedded in the layer,
Reflected light with high glitter is outstanding, and a novel design effect that is not found in conventional erasers can be obtained.

When the hue of the main body layer and the interference color produced by the reflected light of the glittering material have a complementary color relationship, the interference color is emphasized by the hue of the main body layer. Further, when the hue of the main body layer and the hue of the interference color produced by the reflected light of the glittering material are in the same system, the hue of the interference color merges with the background color of the main body layer, and only the shine is emphasized.

When the main body layer has a black or dark hue with respect to the incident light, most of the incident light transmitted through the luster material-containing layer or the incident light directly incident on the main body layer is incident on the main body layer. Be absorbed. Therefore, according to the above-mentioned structure, the reflected light from the glittering material is conspicuous, and a design effect which cannot be seen in the conventional eraser can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of an eraser which is an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the eraser of FIG.

FIG. 3 is a schematic diagram showing how the eraser shown in FIG. 1 reflects light.

FIG. 4 is a cross-sectional view showing another embodiment of the eraser of the present invention.

[Explanation of symbols]

1 eraser 2 Bright material-containing layer 3 body layers 5 luster materials

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tetsunori Hashimoto             321 Ikezawacho, Yamatokoriyama City, Nara Rabbit             Within the corporation

Claims (10)

[Claims] 1. A glittering material-containing layer containing a glittering material having a glittering property with respect to incident light, and a main body layer exhibiting reflected light of a predetermined hue with respect to incident light. An eraser in which a containing layer is laminated on the surface of the main body layer. 2. A glittering material-containing layer which contains a glittering material having a glittering property with respect to incident light and is partially or wholly transparent or semi-transparent, and exhibits reflected light of a predetermined hue with respect to the incident light. An eraser comprising a main body layer, and the glittering material-containing layer laminated on the surface of the main body layer. 3. The glitter material contained in the glitter material-containing layer exhibits an interference color with respect to incident light, and the hue exhibited by the main body layer is a complementary color of the interference color or a difference between the complementary color and the hue. Is one of 100 divisions based on the Munsell color method
The eraser according to claim 1, which has a hue of 0 or less. 4. The glitter material contained in the glitter material-containing layer exhibits an interference color with respect to incident light, and the hue exhibited by the main body layer is different from the interference color in the Munsell color table. The eraser according to claim 1 or 2, which has a hue of 10 or less in 100 divisions based on. 5. The eraser according to claim 1, wherein the body layer has a white hue with respect to incident light. 6. The eraser according to any one of claims 1 to 4, wherein the main body layer exhibits a black or dark hue with respect to incident light. 7. The bright material contained in the bright material-containing layer is a metal-coated organic bright material in which an organic material is coated with a metal and / or a metal oxide, and an inorganic material is coated with a metal and / or a metal oxide. One or more glitter materials selected from the above-described metal-coated inorganic glitter material, a multi-layer resin glitter material in which resin films are laminated in multiple layers, metal powder, and colored metal powder with which the surface of the metal powder is colored. The eraser according to any one of claims 1 to 6, wherein 8. The eraser according to claim 1, wherein the main body layer is thicker than the glittering material-containing layer. 9. The bright material contained in the bright material-containing layer is composed of a small-diameter bright material having an average particle diameter of 10 μm to 200 μm and a large-diameter bright material having an average particle diameter larger than that of the small-diameter bright material. The eraser according to any one of claims 1 to 8, wherein the eraser is provided. 10. The eraser according to claim 1, wherein the content of the glittering material is 40.0% by weight or less based on the total amount of the glittering material-containing layer.