JPH0524393A - Eraser for marker pen - Google Patents

Abstract

PURPOSE:To wipe off the display made by a marker pen and to clean and wash the leavings of the wiped ink by integrally bonding a rubbing member of foamed plastics including open cells and closed cells to a core member of a main body of foamed plastics. CONSTITUTION:A foamed plastic having at least weak toughness and nerve in sufficient thickness and obtained from polyurethane foam or expanded polyethylene or the like through expansion molding is used for a core member 11 of the main body forming this eraser. A foamed plastic of predetermined thickness including open cells, or open cells and closed cells of polyurethane foam or foamed polyethylene or the like through expansion molding is used for a rubbing member 12. Moreover, the rubbing member 12 is integrally bonded to the main surface of the core member 11. When the display by a marker pen is rubbed on by a rubbing surface part 12a of the rubbing member 12 as the core member 11 is held, the ink display is rubbed by the parts of cells and the leavings of ink are retained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an eraser for a marker pen used for erasing a marker pen display.

[0002]

2. Description of the Related Art As a conventional eraser for a marker pen of this type, various structures shown in FIGS. 2 to 4 have been proposed and implemented.

That is, the eraser according to the first conventional example shown in FIG. 2 is made of a foamable synthetic resin such as polyurethane foam or polyethylene foam which is foam-molded and has at least a weak toughness and a sufficient thickness to provide elasticity. The main core member 1 is used, and the entire surface of the main core member 1 is covered with a required wiping member 2 made of a woven or knitted fabric such as so-called CORTEN having a cloth thickness of about 2 to 3 mm. This first
In the conventional eraser, the main portion of the entire body is appropriately held in the palm, and the ink of the marker pen (having a pigment as a main component) is applied by the respective surface portions of the wiping member 2 on both front and back surfaces thereof. The display can be wiped to be erased by wiping the display. When each surface portion of the wiping member 2 is contaminated to some extent by the ink erasing, it is washed with a solution corresponding to the property of the ink. That is, if it is a water-based ink, it is washed with water, and if it is an oil-based ink, it is washed with a corresponding solvent liquid (hereinafter, only the case of washing with water for simplification of description will be described. ) Enables continuous reuse for each.

Also, in the eraser according to the second conventional example shown in FIG. 3, in the same manner as in the case of the first conventional example,
The main core member 1 made of a foamable synthetic resin is used, and the range from the main surface side of the main core member 1 to the peripheral portion of the back surface including each peripheral side surface is covered with a required wiping member 2, and the back surface is covered. In this case, the wiping member 2 on the main surface is used as a wiping surface to erase the marker display by wiping and enable reuse after washing.

Further, in the eraser according to the third conventional example shown in FIG. 4, the main core member 3 made of the same expandable synthetic resin corresponding to the main core member 1 in the first conventional example.
And a required wiping member 4 made of felt having a required thickness, for example, a thickness of about 10 mm, is adhered to the main surface side of the main core member 3 in this case. By using only 4 on the wiping surface, similarly, the marker display can be wiped and erased and reused after cleaning is possible.

[0006]

However, in the case of the marker pen eraser according to each conventional example configured as described above, each wiping member 2, 4 is used.
As a material for woven and knitted cloth such as CORTEN and a material for felt, the materials for wiping each have water-absorbing property and liquid-absorbing property. There is a problem.

That is, first, the ink residue of the display to be erased permeates and is absorbed into the material of the wiping member, and after the absorption amount reaches a certain degree, the wiping operation is performed.
Even if the display is once erased, there is a fear that the ink absorbed on the display surface side in the wiping direction will be newly transferred as a wiping mark, and for this reason, relatively frequent cleaning of the entire eraser, that is, However, it has the disadvantage of requiring washing with water.

When washing the entire eraser with water, not only the main core member 1 and the main core member 3 made of expandable synthetic resin but also the wiping members 2 and 4 can be completely dehydrated. Instead, it has the inconvenience that it takes time to dry.

Further, even after washing with water, on the other hand, the ink that has permeated into the material of the wiping member often remains without being completely removed, and the ink display may be erased when it is reused. On the other hand, the rubbing and washing work for cleaning may cause the wiping members 2 and 4 to be entirely or partially peeled off from the main core member 1 and the main core member 3, or their external shapes. Collapsed into
This caused a so-called sag.

The present invention has been made in order to solve such a conventional problem, and an object thereof is to always wipe the ink display by the marker pen well and easily, and to erase it. It is an object of the present invention to provide an eraser for a marker pen of this kind, which enables easy cleaning and removal of the wiped ink residue and enables quick reuse after cleaning.

[0011]

In order to achieve the above object, an eraser for a marker pen according to the present invention is made of a foamed synthetic resin such as polyurethane foam, foamed polyethylene and the like, which is foamed and has a sufficient thickness. A main core member is made of foamed synthetic resin of a required thickness including foamed and formed open cells such as polyurethane foam and expanded polyethylene, or open and closed cells, on the main surface of the main body core member. The rubbing member is integrally bonded, and the rubbing surface portion of the wiping member is heated and compressed to a required degree.

[0012]

Therefore, in the marker pen eraser of the present invention, it is necessary that the wiping member for wiping off the ink display contains foamed open cells such as polyurethane foam or polyethylene foam, or open cells and closed cells. Since a thick foaming synthetic resin is used, open cells exposed in a dense state on the wiping surface, or
The open and closed cells provide a good and effective wiping action of the residue on the ink display, and the wiping member is made of foamed synthetic resin such as polyurethane foam or polyethylene foam. Since it is integrally bonded to the main surface of the main core member, the risk of peeling off even by rubbing during cleaning is low, and each member as a whole lacks water absorbency and liquid absorbency Therefore, it is easy to remove the ink residue retained in each bubble, and it is possible to completely squeeze and dehydrate after washing, and it is easy to dry. Furthermore, when the wiping surface part is heated and compressed to a required degree, it is dense. The waist of each bubble exposed in the state is strengthened, and each action is further strengthened.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the marker pen eraser according to the present invention will be described in detail below with reference to FIG.

FIG. 1 is a sectional view showing a schematic structure of an eraser for a marker pen to which an embodiment of the present invention is applied.

That is, in this embodiment, as is clear from FIG. 1, the main core member 1 constituting the eraser.
As the material 1, a foamable synthetic resin such as polyurethane foam or foamed polyethylene, which is foam-molded and has at least weak toughness and a sufficient thickness with elasticity, is used.
As the foamed continuous foamed foam such as polyurethane foam and foamed polyethylene, or a foamable synthetic resin having a required thickness containing continuous foams and closed foams as the main surface of the main core member 11, The wiping member 12 is integrally bonded.

However, in the eraser of the embodiment configured as described above, the continuous air bubbles of the wiping member 12 or the continuous air bubbles and the independent air bubbles are appropriately held with the main core member 11 side held in the palm. The wiping surface portion 12a in which the densities are densely exposed
By wiping operation on the marker pen with the ink, it can be wiped and erased by each densely exposed air bubble portion, and the residue of the wiped ink is water-absorbing and liquid-absorbing on the member itself. It is retained in each corresponding bubble because of its lack of properties.

The wiping surface portion 12 of the wiping member 12
When a is contaminated to some extent by the ink erasing, as in the case of the above-mentioned conventional example, cleaning with a solution corresponding to the property of the ink residue, that is,
For water-based ink, wash with water, and for oil-based ink, wash with a corresponding solvent liquid (herein, this is also specified only when washing with water to simplify the explanation). Thus, the ink residue retained in each bubble is removed to enable continuous reuse after cleaning.

Therefore, in the structure of the eraser according to the above-mentioned embodiment, since the wiping member is integrally bonded to the main surface of the main body core member, even if the rubbing washing at the time of washing is performed, the respective members can be made to interact with each other. It has good shape retention with less risk of peeling, and because the ink residue to be wiped is retained in each bubble, wiping with ink residue on the display surface in the wiping direction side Since the fear of leaving a mark is eliminated, and the water absorption and liquid absorption properties of each member are lacking as a whole, the ink residue retained in each bubble can be extremely easily removed by washing. In addition, the foamable synthetic resin that forms each member has the ability to retain water and liquid in each bubble, but it has high water repellency and can be compressed to the zero point for effective dehydration. Since it is possible, good removal of ink residue by washing and drying after washing can be performed quickly.

In the structure of the above embodiment, the wiping surface portion of the wiping member or the wiping surface portion in which the open cells and the closed cells are densely exposed are, for example, 80 ° C. ± 20 ° C. if this is polyurethane foam. Each foam is exposed by heating and compression under the conditions of ℃ / 2 to 3 min, and in the case of foamed polyethylene, by heating and compression under the conditions of 100 ° C / 2 to 3 min. The waist of the part can be strengthened, and the above-mentioned actions and effects can be further promoted.

[0020]

As described above in detail with reference to the embodiments,
According to the eraser for a marker pen of the present invention, as a wiping member for wiping and removing an ink display, foamed open cells such as polyurethane foam and polyethylene foam, or a required thickness including open cells and closed cells. The foaming synthetic resin is used, and in the rubbing surface portion of this rubbing member, densely exposed open cells, or open cells and closed cells, on the other hand, lack water absorbency and liquid absorbency, Since the ink residue that is wiped off is excellent in holding property, the ink display can be wiped well and effectively, and there is no fear that an ink residue causes a scratch mark.

Further, according to the present invention, the wiping member is integrally adhered to the main surface of the main core member made of foamable synthetic resin such as polyurethane foam and polyethylene foam which is foamed and molded. Also, there is little peeling between each member even by rubbing washing during cleaning, and at the same time, since the water absorption and liquid absorption properties of each member as a whole are lacking, the ink retained in the bubbles cannot be removed by wiping. It has the excellent feature that it is easy, and can be completely squeezed and dehydrated after washing, and is easy to dry.
Further, when the wiping surface portion of the wiping member is heated and compressed, the stiffness of the exposed portion of each bubble can be strengthened, which can further promote the above-mentioned actions and effects.

[Brief description of drawings]

FIG. 1 is a sectional view showing a schematic configuration of an eraser for a marker pen to which an embodiment of the present invention is applied.

FIG. 2 is a sectional view showing a schematic configuration of an eraser for a marker pen according to the first conventional example.

FIG. 3 is a sectional view showing a schematic configuration of an eraser for a marker pen according to the second conventional example.

FIG. 4 is a sectional view showing a schematic configuration of an eraser for a marker pen according to a third conventional example.

[Explanation of symbols]

11 Main core member 12 Wiping member 11a Wiping surface part

Claims (2)

[Claims] 1. A main body core member made of a foamable synthetic resin having a sufficient thickness that has been foam-molded, such as polyurethane foam or foamed polyethylene, is used, and a main surface of the main body core member is
A marker characterized by being formed by integrally bonding a foamed open cell such as polyurethane foam or polyethylene foam, or a wiping member made of a foamable synthetic resin having a required thickness including open cells and closed cells. Eraser for pen. 2. The marker pen eraser according to claim 1, wherein the wiping surface portion of the wiping member is heated and compressed to a required degree.