JP2011255638A - Writing body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a writing body for pigment ink to be used for writing and makeup, which can smoothly supply the ink using the pigment to a coating surface with less ink drop phenomena in inverted stand of an applicator.SOLUTION: There is provided the writing body 3 for pigment ink to be used for writing and makeup, which can smoothly supply the ink using the pigment to the coating surface, with less ink drop phenomena when inverted stand of an applicator, since the fiber located in the central part B in the writing body 3, is made up with the fiber of the diameter larger than the diameter of the fiber located in the outer periphery A.

Description

  The present invention relates to a writing body in which a large number of fibers are aligned, fixed with a binder, and a capillary tube for guiding the ink is formed therein, particularly for pigment ink to be attached to the tip of an applicator. Is related to the cursive form.

  The applicator generally includes an ink tank filled or impregnated with ink in a shaft cylinder, an ink occlusion body, the rear end of a rod-shaped writing body is connected to the ink tank, and the tip of the writing body is connected. It is configured to be exposed to the outside of the shaft tube.

Examples of the applicator include those for writing letters, markings, etc., and those used for makeup such as eye shadow and mascara.
Examples of the ink include water-based pigment ink, water-based dye ink, oil-based pigment ink, and oil-based dye ink. Such an ink is filled in an ink tank or impregnated in a porous material, for example, a sponge, or an ink occlusion material such as a sliver in which a large number of fibers are arranged, and used for writing.

  The cursive body is provided with a capillary tube for guiding the ink inside thereof, and may be any one that writes or applies on the paper surface or the human skin etc. by guiding the ink from the ink tank or the like to the tip thereof. A structural cursive script is provided.

According to the patent document, in the relay core inserted between the ink occlusion body of the writing instrument and the pen core, the cross-sectional structure of the relay core is a structure having an inner layer portion and an outer layer portion, and the capillary force of the outer layer portion is the inner layer portion. It is disclosed that the density structure is larger than the capillary force, for example, the outer layer portion is a dense structure year and the inner layer portion is a sparse structure, or the opposite structure. However, this patent document does not describe that it is a relay core or in relation to pigment ink.
Assuming the above configuration, as shown in FIG. 6, it is considered that the relay core 10 is configured so that fibers of the same decitex (denier) are denser in the outer layer portion and become sparser toward the inner layer portion side. It is done.

JP 2004-66479 A

  In a conventional applicator, a large number of fibers (all fibers have substantially the same diameter) are aligned and fixed with a binder (a synthetic resin material that partially bonds the fibers together) to form a rod, with ink inside An applicator provided with a cursive body in which a capillary tube for inducing the above is formed is widely known and used.

  In many cases, oil-based or water-based dye inks are used for the writing materials using a large number of fibers. Recently, oil-based or water-based inks using pigments have been used due to the use of markers and cosmetic applicators. Increasing use of ink.

  The problem with using pigment-based inks is that the pigment-based inks have larger pigment particles than the dye-based inks, so the size of the capillaries formed between many fibers ( If the width between the fibers is small, the flow becomes poor and the application is hindered. In some cases, the ink is clogged between the fibers. On the other hand, if the gap between the capillaries is increased in order to improve the flow of ink, a sufficient supply amount of ink can be supplied to the tip of the writing body in the applied state. When the tip of the cursive object is pointing upwards, such as when it is inserted, an ink drop phenomenon (drain back) occurs that the ink falls to the ink tank or the like due to its own weight. When the applicator is reused in a state where ink has fallen off, it cannot be used immediately, so it must be waited for, and if it is shaken, ink dripping may occur.

  From the above knowledge, the present invention is able to smoothly supply the ink using the pigment to the application surface, and has a small ink drop phenomenon when the applicator is inverted. Provide the body.

  As a means for solving the above-mentioned problems, the present invention according to claim 1 is a method for aligning a large number of fibers, fixing them with a binder to form a rod-like body, and guiding ink into the inside thereof. A writing body in which a capillary tube is formed, wherein the fiber located in the center portion is composed of fibers having a diameter larger than that of the fiber located in the outer peripheral portion.

  In the cursive body composed of the above structure, since a fiber having a large diameter is located in the central part, the capillary formed between the fibers in the central part is formed larger (the gap is larger) than the capillary formed between the fibers in the outer peripheral part. Has been. Since the outer peripheral portion is surrounded by fibers having a small diameter, the capillary force (the rising force of the coating liquid between the fibers) is stronger in the outer peripheral portion than in the central portion.

  When ink is guided through the capillary of the cursive body from the ink tank or the like according to the ink consumption and supplied to the coating surface by the capillary action of the cursive body, it is applied through both the central part and the outer peripheral part. Is done.

  After using the applicator, when the applicator is inverted on a pen stand, etc., the ink in the cursive body is held at the outer peripheral portion because the capillary force of the outer peripheral portion of the cursive body is large. As a result, the wettability is maintained around the central part and the diameter of the central part is thin as long as the outer periphery exists, so it does not work to weaken the capillary force. Stays in that position. In re-use, since the coating liquid is held on the outer periphery if the tip of the writing body is directed downward, the ink in the center is smoothly supplied to the tip of the writing body.

  The invention according to claim 2 is the writing body according to claim 1, which is formed in a substantially cylindrical shape, and the fibers constituting the central portion are 17 decitex (15 denier) to 22 decitex (20 denier). It is a fiber, and the fiber which comprises an outer peripheral part is a 2.2 decitex (2 denier) to 5.5 decitex (5 denier) fiber, It is characterized by the above-mentioned.

  The invention according to claim 3 is the cursive body according to claim 1, wherein the curly body is formed in a substantially cylindrical shape, and the width of the outer peripheral portion surrounding the central portion in the cross-sectional view is the length of the radius of the cursive body. On the other hand, it is approximately 1/3 to 1/5.

  Since this invention consists of the above structure, in Claim 1, the fiber located in the center part which comprises a writing body is comprised by the fiber of the diameter larger than the diameter of the fiber located in an outer peripheral part. As a result, it is easy to form a gap (capillary tube) suitable for the smooth passage of pigment ink between the fibers in the central part, and the pigment ink infiltrates the outer peripheral part surrounding the central part, let alone the outer peripheral part. Since the boundary portion between the central portion and the outer peripheral portion is kept in a wet state, the capillary phenomenon can be maintained with respect to the ink in the central portion, and the state where the ink in the central portion of the writing body is not drained back can be maintained.

  In the invention described in claim 2 and claim 3, the diameter of the fibers constituting the outer peripheral portion and the central portion is different by 11 decitex to 20 decitex (10 to 18 denier) or around the central portion. The effect of claim 1 can be made clearer by providing an outer peripheral portion having a strong capillary force in an appropriate range.

FIG. 1 is a cross-sectional view of a cursive body according to an embodiment of the present invention. FIG. 2 is an enlarged cross-sectional view of the portion of FIG. FIG. 3 is a longitudinal sectional view of an applicator equipped with a writing body according to an embodiment of the present invention. FIG. 4 is a vertical cross-sectional view of an applicator of a type different from that of FIG. 3 equipped with a writing body according to an embodiment of the present invention. FIG. 5 is a longitudinal section showing another cursive body having a different tip shape from that of FIG. 3 and FIG. FIG. 6 is a cross-sectional view of a prior art cursive.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to FIGS.
In the present invention, as shown in FIGS. 1 and 2, a large number of fibers 1 a and 1 b are aligned and fixed with a binder to form a rod-like body, and ink (pigment ink in the present embodiment) is guided therein. A writing body 3 in which a capillary tube 2 is formed, and the fiber 1b located in the central portion B is composed of fibers having a diameter larger than the diameter of the fiber 1a located in the outer peripheral portion A surrounding the central portion B. It is a writing body 3 for pigment ink in which the capillary 2b formed on B is made larger than the capillary 2a formed on the outer peripheral portion A.
The cursive body 3 is provided at the tip of an applicator 6 for writing characters, markings or the like, or an applicator 6 used for makeup such as eye shadow or mascara.

FIG. 1 is a cross-sectional view of the cursive body 3, but the thickness and arrangement of the fibers are exaggerated. Actually, the fiber 1a located in the outer peripheral portion A is made of polyester synthetic fiber, polyamide synthetic fiber, or the like, and 2.2, 3.3 or 5.5 decitex (2, 3 or 5 denier) fiber is used. Yes. The fiber 1b located in the central portion B is made of polyester synthetic fiber, polyamide synthetic fiber, or the like, and 17 or 22 dtex (15 or 20 denier) fiber is used.
In the outer periphery A, fibers of 3.3 or 5.5 decitex (3 or 5 denier) are mixed with 2.2 decitex (2 denier) fibers, and in the central portion B, 17 and 22 decitex (15 And 20 denier fibers may be used in combination, for example, a writing body 3 having a homogeneous writing performance when composed of 2.2 decitex and 17 decitex (2 denier and 15 denier), respectively. Desirable.
Although the boundary surface between the fiber 1b located in the central part B and the fiber 1a located in the outer peripheral part A is described in a circle in the drawing, it may be a boundary surface with unevenness that penetrates each other.

  The two-layered cursive body 3 is configured as follows. If the striped fibers 1a having a narrow diameter are arranged in a strip shape, the thick fibers 1b bundled in a rod shape are supplied to the inside, and the strip fibers 1a are wound around the rod-shaped fibers 1b. A long rod-like object can be formed, and a central portion B having a desired capillary 2b larger than the capillary 2a on the outer peripheral portion A can be formed. The rod-shaped body consisting of the fibers 1a and 1b of the two layers (outer peripheral part A and central part B) configured as described above is dipped in a binder such as urethane resin, and then dried to partially fix the fibers. Then, the capillary 2 (outer peripheral part A: capillary 2a, central part B: capillary 2b) is formed between the fibers. The dried rod-shaped body is cut into a desired length. The tip is ground into a tip shape suitable for writing, for example, a bullet shape as shown in FIGS. 3 and 4, or a wedge shape (chisel shape) as shown in FIG. It is inserted into a tank or an ink occlusion body and ground into a shape that easily absorbs ink to form a writing body 3.

The capillary 2 of the writing body 3 has a fiber 1b having a large diameter located at the central portion B of the writing body 3, so that the capillary 2b formed between the fibers 1b of the central portion B is interposed between the fibers 1a of the outer peripheral portion A. It is configured to be larger than the formed capillary 2a (the gap is larger). Since the outer peripheral portion A is surrounded by a fiber having a small diameter, the outer peripheral portion A has a stronger capillary force (the increasing force of the coating liquid between the fibers) than the central portion B.
The cursive body 3 is formed in a substantially cylindrical shape, and in a cross-sectional view (FIG. 1), the width E of the outer peripheral portion A surrounding the central portion B is approximately 1/3 to 5 with respect to the radius D of the cursive body 3. It is desirable to have a width 1 / E.
As the cursive body 3, what is called a general pigment ink can be adopted. The oil-based pigment ink is mainly composed of a solvent, a pigment, and a resin, and the aqueous pigment ink is mainly composed of water, a wetting agent, a pigment, and a resin. A general pigment has a particle size of about 0.1 to 3 μm, and a metallic pigment has a particle size of 6 to 15 μm.

As shown in FIG. 3, the above-described cursive body 3 includes the tip of the applicator 6 of the type having the valve mechanism 10 at the tip of the shaft tube 4, or the pigment ink in the shaft tube 4 as shown in FIG. 4. 5 is attached to the tip of an applicator 6 of the type having an ink occlusion body impregnated with 5.
In the applicator 6 of the type shown in FIG. 3, the valve mechanism 10 is opened by bringing the tip of the writing body 3 into contact with the application surface and the writing body 3 is slightly retracted into the shaft cylinder 4, that is, the valve body 11 is a spring. 12 is separated from the valve seat 13 while being compressed, so that the pigment ink 5 in the shaft cylinder 4 flows smoothly from the gap between the valve body 11 and the valve seat 13 through the capillary 2 of the writing body 3 to the application surface. become. Further, in the type of applicator 6 shown in FIG. 4, if the applicator 6 is erected so that the tip of the writing body 3 is in contact with the application surface, the pigment ink 5 in the shaft cylinder 4 passes through the capillary 2 of the writing body 3. Will flow smoothly to the coated surface.
In these types of applicators 6, the pigment ink 5 was allowed to flow out of the writing body 3 to the application surface, and then capped, and the applicator 6 was turned upside down in a brush. After 1 hour, when it was applied again, it could be applied with the same writing feeling as before.

(Example)
As shown in FIG. 3 and FIG. 4, the writing body 3 whose tip attached to the shaft cylinder 4 is ground into a bullet shape has a fiber 1 a located at the outer peripheral portion A as a fiber of 5.5 decitex (5 denier). The fiber 1b located in the central portion B was configured as a 22 dtex (20 denier) fiber. The shaft cylinder 4 connected to the rear end of the writing body 3 is filled with ink containing a 3 μm titanium oxide (green) pigment.
The diameter (2D) of the cursive body 3 is 4.5 mm.
Width E of outer peripheral part A: 0.5 mm (diameter of central part B: 3.5 mm)
Width E of outer peripheral part A / radius (D) of cursive body 3 1 / 4.5
Fiber 1a of outer peripheral part A: 5.5 decitex (5 denier) fiber: 5400 Porosity of outer peripheral part A (capillary 2a): about 65%
Fiber 1b in the central part B: 22 decitex (20 denier) fibers: 1464 Porosity in the central part B (capillary 2b): about 75%
When the cursive 3 was used, the coating line was desirable. It was placed on a brush stand and applied immediately after use for 1 hour.

As other combinations, the cursive 3 (the diameter 2D and the width E of the outer peripheral portion A is the same as described above), the outer peripheral portion A with 13536 fibers of 2.2 decitex (2 denier), and the central portion B And 1464 fibers of 22 decitex (20 denier). Also in this form, the porosity of the outer peripheral portion A (capillary 2a) is set to about 65%, and the porosity of the central portion B (capillary 2b) is set to about 75%.
Further, the cursive body 3 is composed of 9024 fibers of 3.3 dtex (3 denier) on the outer peripheral part A and 1940 fibers of 17 dtex (15 denier) in the central part B. Also in this form, the porosity of the outer peripheral portion A (capillary 2a) is set to about 65%, and the porosity of the central portion B (capillary 2b) is set to about 75%.

  1a Fiber constituting the outer peripheral part, 1b Fiber constituting the central part, 2 Capillary tube (gap between fibers), 2a Capillary part on the outer peripheral part, 2b Capillary part on the central part, 3 Cursive body, 4-shaft cylinder, 5 Pigment ink, 6 Applicator, A outer periphery of cursive, B central part of cursive

Claims (3)

  A large number of fibers are lined up and fixed with a binder to form a rod-like body with a capillary tube for guiding ink inside, and the fiber located at the center is located at the outer periphery. A cursive character comprising a fiber having a diameter larger than the diameter of the fiber.   It is formed in a substantially cylindrical shape, and the fiber constituting the central portion is a fiber of 17 decitex to 22 decitex, and the fiber constituting the outer peripheral portion is a fiber of 2.2 decitex to 5.5 decitex The cursive body according to Item 1.   It is formed in a substantially cylindrical shape, and the width of the outer peripheral portion surrounding the central portion in a transverse view is approximately one third to one fifth with respect to the length of the radius of the cursive body. The cursive body according to Item 1.

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