JP2008001006A - Eraser for whiteboard - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an eraser for a whiteboard capable of preventing the whiteboard from staining and blurring of characters or the like. <P>SOLUTION: The eraser (1) for the whiteboard has an erasing face (6) for erasing a writing line or a drawing line on the whiteboard. The erasing face (6) is composed of a face of a pile side of a pile woven fabric, and the pile woven fabric is formed of a raw material which can wipe a releasing agent of a marker for the whiteboard, for example, rayon or a polyester. The thickness of the pile of the pile woven fabric is 10-50 dtex, and the length of the pile of the pile woven fabric is 3-15 mm. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a whiteboard eraser, and more particularly to a whiteboard eraser having a pile fabric.

  2. Description of the Related Art Conventionally, there is known a whiteboard eraser for erasing a writing line or a drawing line written with a marker on a whiteboard, for example, a character, a line, or a figure. Further, an eraser for whiteboard including a pile fabric is known (see, for example, Patent Document 1 and Patent Document 2).

  The operation of the whiteboard eraser will be described. The marker used for the whiteboard includes an ink agent and a release agent. The ink agent can be attached on the whiteboard to represent characters or the like, but is easily peeled off from the whiteboard by the release agent. When a whiteboard eraser is pressed onto a character, etc., and wiped as if it were rubbed, the ink was scraped away from the whiteboard, resulting in a wiping residue, resulting in the character being erased from the whiteboard. . If an eraser for whiteboard containing a pile fabric is used, the wiping residue of the ink agent is held by the pile (raised) of the pile fabric, so that the wipe residue can be wiped from the whiteboard.

  The eraser for whiteboard described in Patent Document 1 has a pile fabric composed of thick fibers for scraping off the ink agent and thin fibers for holding the wiping residue of the ink agent.

  In the eraser for whiteboard described in Patent Document 2, piles of appropriate length and thickness are directly planted on holding members of various shapes.

Utility registration No. 2578289 (paragraph 0009) JP-A-8-67096 (paragraphs 0012 and 0013)

  If the whiteboard has been used for a long time, the wiping residue wiped off with the eraser may re-adhere to the whiteboard, causing dirt on the whiteboard. Further, when writing or drawing with a marker, the writing line or drawing line, for example, characters may be blurred. In particular, it has been found that when a solid marking stick (Japanese Patent Application No. 2001-205 solid drawing agent) is used, blurring tends to occur.

  When the whiteboard became dirty, the whiteboard was cleaned with a special spray or wet sheet cleaner. However, the user must purchase a special cleaner separately, and regularly cleaning the whiteboard is troublesome.

  Therefore, an object of the present invention is to provide a whiteboard eraser that can prevent the whiteboard from being smudged or blurred.

  In order to achieve the above object, an eraser for a whiteboard according to the present invention has an erasing surface for erasing a writing line or a drawing line on the whiteboard, and the erasing surface is composed of a surface on a pile side of a pile fabric. The pile fabric is formed of a material that can wipe off the release agent of the whiteboard marker.

  The inventor of the present application has paid attention to the fact that the cause of the above-mentioned whiteboard smudges and text blurring is the release agent contained in the whiteboard marker. Specifically, the release agent for facilitating the release of the ink agent from the whiteboard is a transparent oily substance. When characters written or drawn on the whiteboard are erased with a conventional whiteboard eraser, It remained attached to the board. Further, when the whiteboard was rubbed with an eraser, the release agent spread on the whiteboard and became a thin film. When the release agent remained in the form of a film on the whiteboard, the wiping residue wiped off with the eraser re-adhered to the release agent, causing dirt on the whiteboard. In addition, when writing or drawing with a marker where the release agent remains in the form of a film, the ink agent is repelled by the release agent and cannot sufficiently adhere to the whiteboard, fading to the writing line or drawing line. Has occurred. In particular, when using the above-described solid marking stick (Japanese Patent Application No. 2001-205 solid drawing agent), the stick is slipped by the release agent remaining on the surface of the whiteboard, and particularly, faintness is likely to occur. .

  The inventor of the present application emphasizes that the conventional whiteboard eraser removes the ink agent of the marker for whiteboard, and there exists a whiteboard eraser that wipes off the release agent at the same time as the ink agent is wiped off. Focusing on not doing so, the present invention was conceived.

  As described above, the eraser for whiteboard according to the present invention has an erase surface for erasing the writing line or drawing line on the whiteboard formed of a pile fabric, so that the writing line or drawing line on the whiteboard, that is, The ink agent of the marker for whiteboard can be scraped off and held. Also, since the pile fabric is made of a material that can wipe off the marker release agent for the whiteboard, the ink agent is used when the whiteboard is rubbed with the whiteboard eraser to erase the writing lines or the drawing lines. At the same time as scraping off, the release agent can be wiped off. Thereby, the stain | pollution | contamination of a whiteboard resulting from wiping residue adhering to a whiteboard again can be prevented. Further, when writing or drawing with a marker, the ink material of the marker is not repelled, so that the writing line or the drawing line can be prevented from fading. As a result, the whiteboard can be kept in a good state for a long time.

  In the whiteboard eraser according to the present invention, preferably, the pile fabric is formed of rayon or polyester.

  In the whiteboard eraser according to the present invention, preferably, the pile fabric pile thickness is 10 to 50 decitex, or the pile fabric pile length is 3 to 15 mm.

  Further, in the eraser for whiteboard according to the present invention, preferably a composition comprising 100% by weight of alcohol-modified silicone, 100% by weight of trimethylolalkane fatty acid triester, 100% by weight of methoxypropanol, and 5% by weight of a blue oil-soluble dye. When the composition is wiped off from the whiteboard on which is dropped, the saturation of the composition remaining on the whiteboard is 0.2 or less.

  The eraser for whiteboard according to the present invention can prevent the whiteboard from becoming dirty or blurred.

  Hereinafter, an eraser for a whiteboard according to the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a whiteboard eraser according to a first embodiment of the present invention.

  The whiteboard eraser 1 includes a rectangular parallelepiped holding member 2 and a wiping member 4 attached to the upper surface of the holding member 2. The wiping member 4 has an erasing surface 6 for erasing writing lines or drawing lines on the whiteboard.

  The holding member 2 is formed of, for example, a plastic molded body or a foamed body such as urethane. Further, the wiping member 4 is formed of a pile fabric, and the erasing surface 6 is constituted by a surface on the pile side of the pile fabric. The pile fabric is formed of a material that can wipe off the release agent of the whiteboard marker, and a pile fabric made of rayon or polyester fiber is particularly preferable. Rayon and polyester are particularly excellent in affinity with the release agent contained in the whiteboard marker, and can improve the wiping performance of the eraser 1.

  The shape of the pile of the pile fabric may be a loop shape like a towel cloth, or may be a raised shape obtained by cutting the loop.

  The thickness of the pile is preferably 1 to 150 dtex. If the thickness of the pile is smaller than 1 dtex, the fibers constituting the pile become soft and the force for scraping off the ink cured on the whiteboard becomes small. On the other hand, if the thickness of the pile is larger than 150 dtex, the force for scraping off the cured ink increases, but the ability to hold the wiping residue decreases. Specifically, as the pile becomes thicker, the density of piles becomes coarser, the gap between the piles becomes larger, and the wiping residue retention capacity becomes smaller.

  The length of the pile is preferably 3 to 15 mm, and more preferably 5 to 10 mm. When the pile length is shorter than 3 mm, the ability to hold the wiping residue is reduced. On the other hand, if the pile length is longer than 15 mm, the tendency of the pile to fall sideways becomes strong, and the force for scraping off the cured ink becomes small. Brushed piles are more likely to fall than piles on the loop. In addition, if the pile length is long, the pile protrudes from the erasing surface 6 and becomes fluffy, and the outline of the erasing surface 6 becomes unclear. As a result, the intended portion of the ink on the whiteboard is erased. It may not be possible.

  Although the above-described eraser 1 has a rectangular parallelepiped shape including the holding member 2, as a modification, the whiteboard eraser may be formed only by the wiping member 4. For example, the whiteboard eraser 10 according to the second embodiment of the present invention shown in FIG. 2 has a mitt shape in which the pile fabric is cylindrical with the pile facing outward and sewn so as to close one end. Yes. Further, the whiteboard eraser 20 according to the third embodiment of the present invention shown in FIG. 3 has a cylindrical shape in which a pile fabric is simply sewn in a cylindrical shape with the pile facing outward. These erasers 10 and 20 may be used by inserting a hand into the tube portion, or may be used by inserting a hand towel or the like into the tube portion and inflating it and grasping it from the outside. Also, in the erasers 10 and 20 of the second embodiment and the third embodiment, unlike the eraser 1 of the first embodiment, it is not necessary to use a holding member 2 such as plastic, and can be easily washed. Drying after washing is fast. In addition, since the erasers 10 and 20 are compact, they are convenient for storage and carrying.

  Next, experimental examples and comparative examples of the whiteboard eraser according to the present invention will be described.

  The whiteboard eraser 1 of Experimental Example 1 includes a foam (polyethylene foam) holding member 2, and a wiping member 4 made of a pile fabric affixed to the holding member 2 so that the raised side forms an erasing surface 6. It comprised so that it might have. The size of the erasing surface 6 was 5 × 10 cm. The pile fabric was a cut pile type (raised), the pile was made of rayon, the pile thickness was 15 dtex, and the pile length was 7 mm.

The whiteboard eraser 1 of Experimental Example 2 was the same as Experimental Example 1 except that the pile fabric was made of polyester.
The eraser for whiteboard of Comparative Example 1 was the same as Experimental Example 1 except that the pile fabric was made of acrylic.
As the whiteboard eraser of Comparative Example 2, a whiteboard eraser (trade name “white board eraser M”) manufactured by Sakura Crepas Co., Ltd., having an erasing surface of 5 × 10 cm was used. The erase surface was made of felt and had a fine waveform.
As the whiteboard eraser of Comparative Example 3, a whiteboard eraser (trade name “RA-11N”) manufactured by KOKUYO Co., Ltd. having an erasing surface of 6 × 13.5 cm was used. The erase surface was made of felt with no irregularities.

  In order to compare the ability of the whiteboard marker to wipe off the release agent, a colored release agent was prepared. (1) 1 g of alcohol-modified silicone (“SF5427” manufactured by Toray Dow Corning), which is a slightly volatile release agent, (2) Trimethylol alkane fatty acid triester (“Unistar”, a non-volatile release agent) H334R ") 1 g, (3) 1 g of organic solvent methoxypropanol (Daicel Chemical Industries), (4) CI Solvent Blue 35 (Clariant" Fat Blue B-01 ") 0.05 g Was prepared.

  The experiment was conducted as follows. Two drops (about 0.05 g) of the above release agent formulation were dropped on a white board (manufactured by YERIM, Korea) placed horizontally. Using the erasers of Experimental Examples 1 and 2 and Comparative Examples 1 to 3, each was moved so as to draw a circle, and the release agent formulation was wiped off until it could not be wiped further. The stripping composition remained in the form of a film and a circle on the trace of wiping, and it was confirmed as a slightly blue part. Using a Minolta spectrocolorimeter “CM-1000”, the blue portion was measured to determine the V value (lightness) and C value (saturation) in the Munsell color system. The larger the V value and the smaller the C value, the less the release agent left on the board, meaning that more release agent could be wiped off. The results are shown in Table 1.

  As can be seen from Table 1, in Experimental Examples 1 and 2 and Comparative Examples 1 to 3, the difference in V value was not so much, but the C values of Experimental Examples 1 and 2 were C values of Comparative Examples 1 to 3. Was significantly smaller. Thereby, in Experimental Examples 1 and 2, the release agent formulation is almost wiped from the whiteboard, whereas in Comparative Examples 1 to 3, the release agent formulation remains as a thin film on the whiteboard. I understood that.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the invention described in the claims. Needless to say, these are also included within the scope of the present invention.

1 is a perspective view of a whiteboard eraser according to a first embodiment of the present invention. It is a perspective view of the eraser for whiteboards by the 2nd Embodiment of this invention. It is a perspective view of the eraser for whiteboards by the 3rd Embodiment of this invention.

Explanation of symbols

1, 10, 20 Whiteboard eraser 2 Holding member 4 Wiping member 6 Erase surface

Claims (5)

A whiteboard eraser,
It has an erasing surface for erasing writing lines or drawing lines on the whiteboard, and this erasing surface is composed of a surface on the pile side of the pile fabric, and this pile fabric wipes off the release agent of the marker for whiteboard. A whiteboard eraser that is made of a material that can be used.   The whiteboard eraser according to claim 1, wherein the pile fabric is formed of rayon or polyester.   3. The whiteboard eraser according to claim 1, wherein a thickness of the pile of the pile fabric is 10 to 50 dtex.   The length of the pile of the said pile fabric is 3-15 mm, The eraser for whiteboards of any one of Claims 1-3 characterized by the above-mentioned.   When the composition is wiped from a white board to which a composition comprising 100 parts by weight of an alcohol-modified silicone, 100 parts by weight of a trimethylolalkane fatty acid triester, 100 parts by weight of methoxypropanol, and 5 parts by weight of a blue oil-soluble dye is dropped. The whiteboard eraser according to any one of claims 1 to 4, wherein the saturation of the composition remaining on the whiteboard is 0.2 or less.

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