JPS6219497A - Liquid feeder made of conjugate fiber - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is applicable to pen nibs of nail polish pens, writing pens, etc. that use high viscosity, TSM ink, and other pen nibs that use particularly sufficient ink flow and appropriate tip strength. The present invention relates to a liquid supply body made of composite fiber T4 useful for the required applications.

(Prior art) As a typical example targeting high viscosity ink,
0-923@, etc., in which a fiber bundle made of heat-fixable fibers is impregnated with a resin liquid, dried or cured after drying, and the fibers are formed into a bundle by the binding force of the resin.

By the way, there is a serious problem with high-viscosity, 8-concentration ink that if the porosity in the diametric cross section of the fiber bundle is not sufficient, there is little hope that it will flow out.Therefore, in order to increase the porosity,
Although methods such as (1) lowering the mei occupancy in the radial cross section to lower the fiber density and (2) lowering the resin concentration have been considered, the above-mentioned conventional example has the following problems and is difficult.

(1) When the mi1M density is lowered, the problem of heat shrinkage due to the heat ω received by the fibers begins to appear, and the dimensional stability becomes extremely poor. That is, when the mu density becomes less than about 30%, the effect gradually appears, and when it becomes less than 20%, the effect becomes extremely large.

(1) When the fiber density is lowered, uniform dispersion of the fibers in the diametric cross section cannot be obtained, and the difference in density between the inner side and the outer side becomes significant. (Blocking phenomenon) (■) Due to the effect of (1) above, migration of the resin tends to occur during drying or dry curing after impregnation with the resin liquid, and the binding strength of the resin on the inside side is greater than that on the outside side. A phenomenon occurs in which the binding strength of the resin is significantly reduced. For this reason, there is a dilemma in which the resin concentration cannot be lowered more than necessary and the binding strength cannot be strengthened.

(IV) $1 Since the fibers are bound by resin, the binding strength is considerably inferior to the self-fusing strength of the fibers themselves.

(v) Matching of IIN and resin, resistance to resin and ink (chemical resistance, solvent resistance) must always be considered, and uses and applications are limited.

(%!I) During the polishing stage to shape the product into a product shape, cutting defects such as so-called bulges often occur due to insufficient binding force due to the resin.

On the other hand, in Japanese Patent Application Laid-open No. 60-25798, relatively large holes penetrating in the axial direction are formed in the radial cross section of a fiber bundle made of heat-setting raw fibers, avoiding the solution based on fiber density. Techniques have been proposed for dealing with ink supply.

However, when a single fiber is heat-set, t! ! Due to the temperature difference, the temperature inside becomes low, making it difficult to form holes with a clear shape. This becomes more noticeable as the outer diameter of the molded product increases. Although it would be possible to sufficiently heat the inside and heat-set it, the dimensional stability would be extremely poor due to heat shrinkage.

Moreover, even though there are multiple holes in the diameter cross section, they do not have communication passages that directly connect them.
It is technically insufficient to ink a high viscosity liquid.

Furthermore, the peripheral holes tend to lose their shape and become unclear during the processes of immersion in a resin solution for binding single fibers, drying, and curing.

Furthermore, regarding the porosity between each fiber, the fiber density must be lowered in order to ensure the outflow of the highly viscous liquid, and in this case, the above (1) to (vl) become problems.

Furthermore, there is an undeniable problem in that the strength of the brush tip is reduced due to the presence of a relatively large hole penetrating in the axial direction.

(Problems to be Solved by the Invention) The problems to be solved by the present invention are such that the main passage having an appropriate diameter cross-section has a clear hole shape such as a two-round shape, a cross shape, a star shape, etc. Both the sub-path between each fiber and the ink flow are 0.
- and has appropriate flexibility and tip strength, and does not have any of the problems of conventional products.

(Means for solving the problems) The means taken by the present invention to achieve the above problems are as follows:
Each composite fiber has directionality in the axial direction, and the core part with a high melting point is covered with a jacket part with a low melting point. Due to the partial heat W1 between the jacket parts, the rear end along the axial center line A main passage with an appropriate diameter cross-sectional shape reaching from the rear end to the rear side of the tip, and a sub-passage between each fiber that communicates with this main passage except for the opening at the rear end and lead to the surface of the tip are formed. It is characterized by having a structure in which mtia bundles are attached to each other.

(Example) An example of implementation of the present invention will be described in detail below based on the drawings.

In the figure, (A) is a liquid supply body, and this liquid supply body (A)
is a bundle of fibers with orientation in the axial direction, and has a core with a high melting point (
Each composite fiber (1), which is made by covering 1a) with an outer sheath (1b) having a low melting point, is fused to the axial center line by partial heat fusion in the axial and radial directions between the outer sheaths (1b). Rear end along side (A3
) to the rear side of the tip (A1), which surrounds and communicates with this main passage (2) except for the rear end opening (2b), and extends from the tip (A1) to the rear side of the tip (A1).
) The fibers are attached to each other by forming sub-paths (3) between the fibers leading to the surface.

The tip (A1) communicates with the front end (2a) of the main passage (2), which reaches the rear side of the tube tip surface, through the sub passage (3) in a back-to-back manner, and is mutually connected to the main passage (2). It also communicates with the n1 passage (3) in the body (A2) and the rear end (A3), which communicates with the body (A2) and the n1 passage (3) in the rear end (A3), so that ink can be smoothly supplied to the tip surface having an appropriate tip strength. The porosity of this tip (A+) is 60 to 85%.

The porosity of the main passage (2) and the sub passage (3) is adjusted to a diameter cross-sectional area ratio of 50 to 90%, preferably 70 to 90%.

The main passage (2) has an appropriate diameter cross-sectional shape of a round shape, a doll shape, a cross shape, a star shape, or various similar shapes, and its occupation rate with respect to the diameter cross section is 10 to 70%, preferably 20 to 20%.
40%, each sulin 1-(2c) in case of irregular diameter cross section
The width is 0.2~4. O1/I preferably 0.5-2.0
It is 1/I. This main passage (2) reaches to the back of the tip of the tip (A1), and allows ink to be quickly supplied to the tip (A1), the rear end (A3), and the body (A2).

The auxiliary passage (3) is formed between the fibers (1) at the tip (A+), the thorax (A2), and the rear end (A3), and also communicates with the main passage (2). The porosity is 60-85% at the tip (A+) and 30-85% at the trunk (A2) and rear end (A3).
, preferably 40 to 75%.

Composite line N(1) is sliver or filament]・
It has a shape of 1 to 20 d (denier), and the core part (1 a
) and the outer covering part (1b) is desirably 20°C or more, and the larger the difference, the more preferable it is.

As a result, the core portion (1a) has a small thermal shrinkage rate and good dimensional stability.

The core (1a) of this composite wire 11 (1) is made of Volip-O-pyrene, polyester, nylon 6.6, etc., and the outer sheath (1b)
is a polyolefin polymer, nylon 6, etc., and specific composite fibers are shown in the table below.

Desirably, it is an O composite fiber.

Also, for the denier of composite 11M (1), 1~20d
The denier is selected as appropriate within the range of 1, but it is preferable that the denier is as small as possible in order to avoid the blocking phenomenon of the fibers.

Example work Single yarn denier 6d composite wire 11 (1) of above (■) is 119
A sliver of 7 m is processed, and the sliver is processed into a heating section of molding device a (B) (hot air blowing temperature 205 to 21
0℃, hot air outlet humidity 140℃, wind pressure 0.5kg/cd
) (B+), passed through the molding part of an 8φ nozzle (heating temperature 105°C) (B2), and 0.2a
Pull out at a speed of +/sin. Next, the supplied element body, which has been fixed to the required length, is placed in the tip molding hole (inner diameter 8φ, ■Omp13G~140℃) of the heat box (C) (C+
) and heat-shape the tip (A1).

The liquid supply body (A>) formed in this way has a diameter of 8φ, has a flat tapered tip (A1) that matches the tip molding hole (C+), and has a tip (A1) that is tapered along the axis in the center of the diametrical cross section. End (A
3) to the living side of the tip (A1), with a clear cross-shaped main passage (
2), ink 70- is excellent, the porosity of the tip (A+) is 65% in diameter cross-sectional area ratio, and the main passage (2
) is 22%, and the porosity of sub passage (3) is 68%.
So, the total porosity of both passages (2) and (3) is 75%.
It is. In addition, in the supply body (A), no fiber blocking phenomenon was observed, sufficient self-fusion of the fibers was observed both inside and outside, and it had appropriate flexibility as well as appropriate brush tip strength.

Note that a desired shape of the tip (A+) can be selected by changing the shape of the tip forming hole (C1) of Hee 1 to Box (C).

Example ■ 700 200 d multifilaments made of conjugate fiber (1) with a single yarn denier of 10 d are bundled and wound into a beam, and the beam is heated in a heating section (hot air blowing temperature 230°C, hot air blowing temperature 230°C, outlet hot water temperature 180℃, wind pressure 0.5ko
/cd> (B+), passed through the molding part of an 8φ nozzle (heating temperature 200℃) (B2), and 0.2i
Withdraw at a speed of /win. Next, the supplied element body cut to the required length was placed in the tip molding hole (inner diameter 8φ, Te1lp 130-140°C) of the heat box (C) (C+
) and heat-form the tip (A1).

The liquid supply body (A) thus molded has a diameter of 8φ, has a diagonally cut tip (A1) that follows the tip molding hole (C1), and has a rear end along the axis line in the center of the diametrical cross section. Section (A3)
The main passage (2) of the doll reaches from the tip to the immediate rear side of the tip (A1) and has a clear shape that is approximately the same as the mandrel (B'3).
Ink 70- is superior because it has
The porosity of the main passage (2) is 25%, the porosity of the sub passage (3) is 65%, and the porosity of both passages (
The overall porosity including 2) and (3) is 74%. In addition, in the same supply body (A), no 70-thickening phenomenon of the fibers was observed, sufficient self-adhesion between the fibers was observed both inside and outside, and it had moderate flexibility and moderate tip strength.

Example ■ Composite fiber 1 (1) of the above O with a single yarn denier of 6d is 117/
The sliver is machined into a sliver of 200°C, and the sliver is processed into a heating section (hot air blowing temperature 205-210°C, hot air outlet lS) in an almost tension-free state.
Once passed through 140℃, wind pressure o, sU/d) (B+),
Molding part of 8φ nozzle (heating temperature 105℃) (82
) and pulled out at a speed of 0.2 m/-in. Next, the supply element body cut to the required length is inserted into the tip molding hole (inner diameter 8φ, Te1DI30) of the heat box (C).
~140℃) (C+), then insert the tip (A+)
Heat and mold.

The liquid supply body (A>) molded in this way has a diameter of 8φ, and has a tip portion (A) having a flat surface on one side and a curved surface on the other side in accordance with the tip molding hole (C1).
A1) shape, and at the center of the radial cross section, there is a clear tenacity that has approximately the same shape as the mandrel (B3) and extends from the rear end (A3) to the immediate rear side of the tip (A+) along the axis line. The main passage (2) is shaped like a letter, and the nozzle side protrusion (B4
), the ink 70- is excellent from the inside and outside, and the tip part (
The porosity of A+) is 68% in diameter cross-sectional area ratio, main passage (2)
The occupancy rate of 11 grooves (4) is 12%, the porosity of the sub passage (3) is 10%, and the total porosity of both passages (2), (3) and the vertical groove (4) is 22%. The porosity is 80%. In addition, in the same supply body (A), no fiber blocking phenomenon was observed,
Sufficient self-fusion between the fibers was observed both inside and outside, and it had appropriate flexibility and tip strength.

Next, as an example of incorporating the liquid supply body of the present invention, the body of a pen, for example, a manicure pen, will be described as follows.

Body structures used for applying and discharging liquids such as high viscosity and a-concentration inks can generally be divided into the following three types.

1) FMe at the tip of the body? A structure in which the pen tip attached to the iJ-Noh volatilizes pressure onto the coating surface, etc., and the valve mechanism in the body is thereby caused to flow out by a so-called valve action. (Jitsukai Sho 57-111586
2) Structure that opens and closes the valve by pressing the butt end of the body to supply liquid to the pen tip at the tip of the body (Japanese Patent Laid-Open No. 60-1
No. 07396) 3) Structure where the body itself is made of a flexible duplex and liquid is supplied to the tip of the body by pressing the center of the body with a finger (side knock method) A disadvantage of the above structure 1) is that the structure is relatively complicated. Since the pen tip used needs to be strong enough not to be deformed or crushed by the pressure applied when the valve is opened 111, so-called knot-touch pen tips cannot be used. Furthermore, it is unavoidable that more liquid flows out than necessary when opening and closing the valve, and the drop of its own weight is 1!1
It is impossible to supply a high viscosity liquid of several hundred cps that cannot last for one hour. Structure 2) above is an improvement on structure 1), and allows the use of a pen tip made of a material that is relatively soft to the touch, but similarly to structure 1), it is difficult to adjust the liquid m and use high viscosity liquids. It is. Also, a common drawback of 1) and 2) is that it cannot be knocked while writing.

The above structure 3) solves the drawbacks of the above structures 1) and 2), and is extremely useful when used in combination with the pen nib of the present invention. An example is given in FIG. To briefly explain the drawing, the body (10) is generally made of a flexible tube and is filled with a high viscosity liquid (nail polish ink), and the pen tip (A) is screwed into the body (10). Although it is fixed by means such as fitting, press-fitting, and heat fusion, it is generally preferable to use a fixing means that is detachable. The liquid in the body is supplied to the nib (A) by compression, and is transferred from the tip of the nib to the application surface. At this time, since the amount of liquid supplied can be adjusted while looking at the coating surface, there is no chance of dripping or scratching the coating surface due to insufficient supply, which is extremely convenient.

(Effect of the invention) Therefore, the present invention has the following advantages.

■ The main passage reaches to the rear of the tip, allowing high viscosity ink to quickly transfer to the tip, which has moderate tip strength, resulting in discontinuation of the cascade at the tip, which has excellent tip strength. You can get clear handwriting without any blemishes.

■ Since the composite fiber attaches itself to its outer sheath as a bound M'JI body, there is almost no problem of heat shrinkage in the core, so the main passage can be clearly shaped and managed to have an irregular cross-sectional shape. It has excellent shape and dimensional stability and extremely high productivity, and increases the occupation rate of the diametrical cross-sectional area, and each slit that spreads in each part of the diametrical cross-section communicates with each other.
High viscosity/IS liquids can be flowed out while mutually being guided in flow.

■ The fibers are uniformly dispersed, there is almost no difference in Il fiber density between the inside and outside, there is no blocking phenomenon, and the secondary passage has a uniform pore condition, which, in combination with the above ■, provides excellent ink flow. , high viscosity and high concentration liquids can flow out smoothly.

■ The fibers must be self-binding, have no spots or lack of binding strength, can withstand writing pressure without breaking the binding, and have flexibility. It has a moderate stiffness and is suitable for this type of use.

■Resin liquid is not required, and problems related to solution selection, drying, curing hard/soft selection, migration, resin curing, and binding strength are not considered, and due to its high resistance, there are almost no ink restrictions. , useful for various applications.

[Brief explanation of the drawing]

FIG. 1 is a side view showing one embodiment of the liquid supply body of the present invention, FIG. 2 is a plan view, FIG. 3 is a radial sectional view, and FIG. 4 is a radial sectional view of a composite fiber. FIG. 5 is a side view showing another embodiment, FIG. 6 is a plan view, and FIG. 7 is a radial sectional view. FIG. 8 is a side view showing another embodiment, FIG. 9 is a plan view, and FIG. 10 is a radial cross-sectional view. 11th
The figure is a radial cross-sectional view showing another embodiment. Figure 12 shows the molding S of the liquid supply body of the present invention! FIG. FIG. 13 is a partially enlarged cross-sectional view of the molding section for molding the liquid supply body having the radial cross section shown in FIG. 3. Figure 14 is a partial enlargement of the molding section that molds a liquid supply body with a radial cross section that is not shown in Figure 7! l1
Li side view. FIG. 15 is a partially enlarged 111i side view of the molding section for molding the liquid supply body having the radial cross section shown in FIG. 10. FIG. 16 is a top view showing a nail polish van incorporating the liquid supply body shown in FIG. 1. In the figure, (A) is the liquid supply body (A1) is the tip r part (A3)
C (1) End (1) C Composite ute (1a) is the core
(1b) is the outer covering part (2) is the main passage (3
) is the second DI passage Figure 1A. Figure 6

Claims (1)

[Claims] Each composite fiber has directionality in the axial direction and has a core with a high melting point covered with a jacket with a low melting point. By partially thermally fusing the jackets, the rear end along the axis A main passageway with an appropriate diameter cross-sectional shape reaching from the tip to the rear side of the tip, and a sub-passage between each fiber that surrounds and communicates with this main passage except for the opening at the rear end and also communicates with the tip surface. A liquid supply body for high viscosity and high concentration ink in the form of fiber bundles that is self-adhered to the ink.