JPH08207497A - White board rubber - Google Patents

Abstract

PURPOSE: To achieve good rubbing ability and enable quick removal of deposited aqueous ink or the like from the rubber by washing with water. CONSTITUTION: A sponge body 2 having closed cells is covered with a coat 11 comprising rubbing masses 10 formed by weaving so that they protrude at fixed intervals. Each rubbing mass 10 comprises a plurality of mass sections 10a, 10a formed of fiber bundles of many polyester filaments closely packed. In the rubbing masses 10, the fiber bundles are compacted zigzag in a fixed ranged. Zigzag portions are fixed, at their centers with respect to the entire width thereof, to warp threads that are thinner than the fiber bundles, so that the turns of the fiber bundles form the mass sections 10a, 10a as in the form of gnarls.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubbing tool, and more particularly to a whiteboard rubbing tool, which is usually called an eraser.

[0002]

2. Description of the Related Art Conventionally, as this kind of rubbing tool, one in which a thick felt cloth is attached to one surface of a rectangular parallelepiped elastic body is already known. In this case, an elastic sponge sheet having a predetermined thickness and a felt sheet having a predetermined thickness are combined in a laminated state by means such as adhesion, and cut into a certain rectangular parallelepiped shape to form a rubbing tool. When attached to a dish-shaped back plate made of synthetic resin, it becomes a rubbing tool for a whiteboard.

However, if this conventional type is used for a long period of time, the felt material will be clogged and eventually it will be unusable. Even if such a situation does not occur, the rubbing performance deteriorates at an early stage, and a situation in which erasure cannot be performed reliably occurs. Even if an attempt was made to recover the rubbing performance, it was difficult to wash the felt cloth soaked with the water-based ink of the marker pen. In particular, it took a long time to surely wash and remove the ink components even if the ink is washed by washing with water.

The present invention has been made in view of the above points, and it is excellent in rubbing performance, and moreover, it is possible to quickly wash and remove the water-based ink or the like once attached to the rubbing tool by washing with water. This is a technical issue.

[0005]

[Technical Means] The technical means of the present invention taken in order to solve the above technical problem is "a plurality of lumps (10a), (1a composed of fiber bundles in which a large number of polyester fibers are densely packed.
The sliding lump (10) made of (0a) is woven so that it protrudes at regular intervals, and the sponge (2) made of closed cells is covered with the covering body (11). Is
While densely meandering the fiber bundle over a certain range, a plurality of lump-shaped lumps formed in the annular portion of the fiber bundle by binding the center of the meandering width of the meandering portion with a warp thread thinner than the fiber bundle It is composed of the bodies (10a) and (10a) ”.

[0006]

The above technical means of the present invention operates as follows. The covering body (11) covering the sponge (2) has a plurality of bump-like lumps (10a), (10a) rubbed lumps (10), (1
Since 0) are formed so as to be regularly arranged at regular intervals, a valley will be formed between the sliding lumps (10), (10).

[0007] Therefore, when an article written on the surface of the whiteboard is rubbed with a marker pen or the like, a rubbed lump (1
The articles are wiped with water-based ink by (0) and (10), and the water-based ink is accumulated between the fibers of the rubbing lumps (10) and (10). Since the sponge (2) is composed of closed cells, the aqueous ink does not soak into the sponge.

After a certain amount of use, the rubbing lumps (10), (10) are filled with the wiped aqueous ink and the rubbing performance is deteriorated. In this case, however, the covering body (11) and the sponge ( 2)
Wash with water. At this time, a detergent or soap may be used depending on the case. As a result, the water-based ink in the rubbing lumps (10) and (10) is removed. Incidentally, the rubbing mass (10) by a fiber bundle in which a large number of polyester fibers are densely packed,
Since (10) is constituted, the aqueous ink does not soak into the constituent fibers and can be surely removed by the water washing.

The lumps (10a), (10a) forming the rubbing lumps (10), (10) make a bundle of a large number of polyester fibers densely meander over a certain range. Along with this, the center of the meandering width of the meandering portion is bound with a warp thread thinner than the fiber bundle so that the annular portion of the fiber bundle is projected in a bump shape, so that the rubbing tool (1) When the rubs are pressed against and rubbed against the object to be rubbed, each of the lumps (10a), (10a) protruding in the shape of a bump is pressed against the surface to be rubbed more strongly than other portions. This ensures that the lumps (10a), (10a) have the effect of removing the rubbing of articles with a marker pen or the like.

[0010]

[Effects] The present invention having the above-described structure has the following unique effects. Since the water-based ink adhered to the rubbing lumps (10) and (10) can be reliably removed by washing with water, etc., and since the sponge (2) consists of closed cells, the water-based ink will not soak into it. Washing the entire rubbing tool with water or rubbing lumps (1
The work to restore the rubbing performance of 0) and (10) is easy.

Further, since the aqueous ink or the like does not cling to the rubbing lumps (10), (10), it can be used for a long time by repeating washing with water. Since each of the lumps (10a), (10a) protruding like a bump is strongly pressed against the surface to be rubbed, the rubbing effect is also excellent. The polyester fibers that make up the covering (11) are resistant to pulling, rubbing and bending, and are resistant to deformation, so the lumps (10a) and (10a) can withstand a long-term rubbing movement. This is economical because the rubbing force of the lumps (10a), (10a) does not deteriorate.

The yarn forming the covering (11) has SR
With the (Soil Release) processing, the rubbing tool (1) is less likely to become dirty, and recontamination is prevented, and even oily dirt can be easily removed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. Example 1 shown in FIGS.
A covering body (11) is composed of 100% synthetic fibers subjected to SR processing, and a sponge (2) is covered with the covering body (11) as shown in FIGS. The rubbing tool (1) is constructed by sewing.

The covering body (11) comprises first warp yarns (A), (B), which form a loop dense portion by partially bending a large number of fiber bundles.
(C), (D) ... and a thin second warp yarn made by knitting several fibers in a chain
(A '), (B'), (C ') ..., and wefts (a), (b), (c), (d) ... which intersect the first and second warp threads at right angles.・ It is composed of and. Hereafter, the first warp threads are respectively (A), (B), (C), (D), (E),
The structure of the covering body (11) will be described with reference to FIG.

The first warp threads are (B), (C), (D) and
(E) intersect each other in the crossover area (X), and the non-crossover area (Y)
Then, (A) overlaps with (B), (C) overlaps with (D), and (E) overlaps with (F) and meanders so as to form loops alternately. When the seven loops were formed, they were overlapping (A)
And (B), (C) and (D), (E) and (F) become separate bodies, and again
(B) crosses (C), (D) crosses (E), and (A) and (F) cross the adjacent first warp threads. That is, the two first
Each loop formed by overlapping warp threads is a lump
(10a), (10a), and by repeating the above-mentioned operation, the covering body (11) is woven while regularly forming the sliding lumps (10) with the seven lumps (10a), (10a). I will go.

In the case of this embodiment, since the portions forming the lumps (10a), (10a) have a structure in which two first warp yarns are bundled, the thickness is twice the crossing region (X). Since the thickness is large and this portion constitutes the rubbing lump (10), the rubbing lump (10) has a shape protruding from other portions. The second warp yarns (A '), (A') are provided on the intersections of the first warp yarns with the seven lumps (10 ').
The second warp yarns (B ') and (B') are woven on the longitudinal centerline of the rubbing lump (10) composed of a) and (10a).

By the second warp yarns (B ') and (B'), the first warp yarns (A), (B), (C) ... The loops will not be unraveled and will be maintained in a bump shape. In addition, the weft threads (a), (b), (c), (d) ... Are incorporated in the crossover area (X) between the first warp threads. Thus, the covering body (11) as shown in FIG. 2 is completed.

Particularly in the case of this embodiment, each lump (10
The diameter of each of a) and (10a) is about 1.5 mm, and the rubbing lump (10) composed of seven lumps (10a) has a length of about 6 mm, a width of about 2 mm, and a thickness of about 1 mm. Becomes In addition, each sliding lump (10),
The intervals of (10) are set to be equal intervals of about 2 to 3 mm, and the second warp (A '), while incorporating the intersection area of the first warp in the center thereof,
(A ') runs and reinforces the cover (11).

The coated body (11) thus woven is cut into a predetermined size, and as shown in FIG. 3, the flat rectangular sponge (2) is covered and the periphery thereof is sewn, as shown in FIG. Such a rubbing tool (1) is completed. In this embodiment, since the relatively coarse mesh is formed as described above, the rubbing tool
(1) It has flexibility of itself and is easily rubbed. Further, since the distance between the rubbing lumps (10) and the rubbing lumps (10) is set so as to approximately match the lateral width of the rubbing lumps (10), the gap is exposed to the outside. The sponge (2) that is
The dust removed from the object to be rubbed is accumulated between the rubbing lumps (10) (10), and there is no inconvenience that the dust falls to other places.

Example 2 shown in FIG. 4 is the sponge (2).
And the cover (11), the base (3) and the holding cylinder (4)
It is designed to be integrated by combining with. In this embodiment, the sponge (2) has a rectangular parallelepiped shape, and an upper portion of the sponge (2) is provided at a lower portion of the base (3) and opens downward.
It is press-fitted inside. Then, a rectangular sheet-shaped covering body (11) is covered so as to surround the exposed portion of the sponge (2) and the cylindrical portion (31), and the holding cylinder (4) is externally fitted from the outside thereof.

The holding cylinder (4) is composed of a taper cylinder part (41) fitted with the cylinder part (31) and a fitting cylinder part (42) continuing to the upper end of the taper cylinder part (41). ) On the lower end of the flange (43)
Overhangs. The tubular portion (31) and the tapered tubular portion (4
Both 1) are configured in a rectangular shape (plan view) as a whole, but their fitting surfaces are pyramidal surfaces that expand upward. Then, the fitting gap of the fitting portion is set to a predetermined value.

Therefore, the exposed portion of the sponge (2) is covered with the covering (1
When the holding cylinder (4) is externally fitted by covering it with the outer peripheral surface of the cylinder part (31) by covering it with 1), the peripheral part becomes a tapered cylinder part (41) of the holding cylinder (4). Since the sponge (2) is sandwiched between the tubular part (31) and the cylindrical part (31), the entire exposed part of the sponge (2) is surrounded by the covering body (11) and can be used as in the first embodiment.

Further, when washing with water, there is an advantage that the sponge (2) and the covering body (11) can be separated. Further, since it is only covered with the covering body (11) cut into a certain size, sewing or the like is unnecessary. In Example 3 shown in FIG. 5, a sponge (2) having a rectangular parallelepiped shape is accommodated from the opening (110) in a bag-shaped cover (11) partially having an opening (110). The holding frame (5), which is opened only downward, is press-fitted and held in the skirt (52) of the holding frame (5). In order to press-fit and hold the sponge (2), in this embodiment, the holding frame (5) has a rectangular tubular skirt portion (52) and a top plate portion detachably fitted to the upper end opening portion thereof. It consists of (51) and. Therefore, with the top plate part (51) removed, the sponge (2) covered with the cover (11) is pushed in from above the skirt part (52) to partially project downward, and the upper end open part Top plate
When the (51) is fitted, a rubbing tool as shown in the figure is completed. Also in this case, the same effect as that of the second embodiment is obtained.

[Brief description of drawings]

FIG. 1 is a partially cutaway explanatory view of a first embodiment of the present invention.

FIG. 2 is an enlarged view of the cover (11).

FIG. 3 is an explanatory view of a state in which the sponge (2) is covered.

FIG. 4 is a sectional view of a second embodiment

FIG. 5 is a sectional view of Example 3

[Explanation of symbols]

 (1) ・ ・ ・ Scraping tool (10) ・ ・ ・ Scraping lump (10a) ・ ・ ・ ・ Agglomerate (11) ・ ・ ・ Coating (2) ・ ・ ・ ・ ・ Sponge

Claims (4)

[Claims] 1. A rubbing lump (10) composed of a plurality of agglomerates (10a), (10a) composed of a bundle of fibers in which a large number of polyester fibers are closely packed is woven so as to protrude at regular intervals. Sponge consisting of closed cells due to the covering body (11)
(2), the rubbing mass (10) makes the fiber bundle densely meander over a certain range, and the center of the meandering width of the meandering part is bound by a warp thread thinner than the fiber bundle. As a result, a rubbing tool for a whiteboard, which is composed of a plurality of bump-shaped lumps (10a), (10a) formed in the annular portion of the fiber bundle. 2. The rubbing tool for a whiteboard according to claim 1, wherein the sponge (2) is made of vinyl chloride resin and has a foaming magnification of about 15 to 30 times. 3. A base (3) having a tubular part (31) for detachably fitting and holding an upper part of the sponge (2), and this base.
(3) is equipped with a holding tube (4) that is fitted onto the tubular portion (31), and holds the upper end of the covering body (11) covered with the sponge (2) with the tubular portion (31). The rubbing tool for a whiteboard according to claim 1 or 2, wherein the rubbing tool is sandwiched between the tube (4) and the tube (4). 4. The covering (11) is in the form of a partially open bag, and the sponge (2) is housed in the covering, and the upper part of the sponge (2) surrounded by the covering (11) is directed downward only. The rubbing tool for a whiteboard according to claim 1 or 2, which is press-fitted into the skirt portion (52) of the holding frame (5) to be opened.