JPS623995A - Liquid supply body made of composite 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 or ink absorbers of nail polish pens, writing pens, etc. that use high viscosity and high concentration ink, as well as intermediates between the two, and various other uses. The present invention relates to a composite fiber liquid supply body useful for.

(Prior art) As a typical example targeting high viscosity ink,
．． o-923@ etc., in which a fiber bundle made of heat-setting 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.

However, with high viscosity and high concentration ink, if the porosity in the diameter cross section of the fiber bundle is not sufficient, there is a serious problem in which almost no outflow can be expected. Therefore, in order to increase the porosity, Measures such as lowering the fiber density by lowering the fiber density, and lowering the resin concentration have been considered, but the above-mentioned conventional examples are difficult because they include the following problems.

(1) When the fiber density is lowered, the problem of heat shrinkage due to the heat m received by m* begins to appear, and the dimensional stability becomes very poor. That is, when the fiber density becomes about 30% or less, its influence gradually appears, and when it becomes 20% or less, the influence 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) (City) Due to the effect of (F') above, migration of the resin tends to occur during drying or dry curing after impregnation with the resin liquid, and the binding force of the resin on the outside side is reduced. In comparison, the binding force of the resin on the inside side is significantly reduced. For this reason, there is a dilemma in which the resin 8Iv cannot be lowered more than necessary and the binding strength cannot be strengthened.

(iv) Since the binding force of liIff is attached to the resin, the binding force is considerably inferior to the self-fusing force of m navy blue itself.

(v) Matching of fiber and resin, resistance to resin and ink (chemical resistance, solvent resistance) must always be taken into consideration, which limits its use and applications.

(vl) During the polishing stage to shape the product into a product shape, cutting failures such as so-called flaking often occur due to insufficient binding force in the resin.

In addition, a composite ll1lff is used as a liquid supply body for low viscosity ink.
A condensed structure has been proposed in Japanese Patent Publication No. 54-688.

However, the liquid supply body used for high viscosity and high concentration ink requires only 4T. <E t) -F) Because the composite fibers are subjected to negative tension and +IU, they are bundled and formed, so the fiber density is as high as 70% or more than 1q, and the porosity per 1T cross section is 30. % culm is less than 10, high viscosity, high IA, and no ink flow can be expected at all.

(Problems to be Solved by the Invention) The problems to be solved by the present invention are as follows.
~ (Vl) [1] It is useful to have moderate flexibility without the disadvantages of (Vl).

(Means for solving the problems) The means taken by the present invention to solve the above problems are as follows:
Each composite 111ff, which has a directional bamboo I in the axial direction and covers a core with a high melting point with a jacket part with a low melting point, has a diameter cross-sectional area ratio of 60 to 85 due to partial thermal fusion of the jacket parts. It is characterized by having a structure in the form of a bundle of fibers that are self-adhered to each other and have a porosity of 50%.

(Example) An example of implementing 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 in the form of a melt bundle with a direction in the axial direction, and each composite 1i11ff (1) in which a core part (1a) with a high melting point is covered with a jacket part (11) with a low melting point has a jacket part (1h). The diameter cross-sectional area ratio becomes 60/85% due to partial heat fusion between the two, forming a porosity of 85% and self-adhering to phase n.

Therefore, the IAI fiber density of the compound 11i1ff (1) is 10 to 15% in the radial cross section of the liquid supply body (A).

Composite fiber H (1) is sliver-like and filament-like, 1 to 20 d (denier).
The difference in melting point between a) and the outer covering part (1b) is preferably 20°C or more, and the greater 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 synthetic fiber l1l (1) is made of polypropylene 1
Non, poly T stell, nylon 6/6, etc., and the outer cover (l
h) G: L Polyolefin polymer, nylon 6, etc., and specific composite fibers are shown in the table below.

Preferably a combination of ■! III(1).

Further, the denier of the composite fiber (1) is appropriately selected within the range of 1 to 20 d, but in order to avoid the l1ill blocking phenomenon, it is preferable that the denier is as small as possible.

Example ■ 2. The composite 11M (1) of the above O with a medium thread denier of 6d. !
Add a sliver to l/m and pass it through the heating section (Temp 140℃) (B) in an almost tension-free state to 4.5φ
It passes through the molding part of the nozzle (Temp 110℃) (C)! , and was withdrawn while cooling at a rate of 0.2111/l1in. Note that it is optional to pass through the cooling section (D).

Liquid supply body (A) thus molded 1. L diameter is 4.5φ
The porosity is 15-80χ culm 1α, and no fiber blocking phenomenon is observed in both the inner and outer parts! 1lf
Self-fusion of 1 minute in f direction was achieved, and it had moderate flexibility.

Example I [ 100 multifilaments 200d made of composite machine H (1) of 11i yarn f kneel 10d and O were collected and passed through a heating section (Temp 210°0) in a non-tensioned state. 4,5φ nozzle molding part (181110190
℃) and pulled out at a speed of 0.3 m/sin.

The liquid supply body (A) molded in this way has a diameter of 4.5φ, a porosity of about 70 to 75%, no blocking phenomenon of fibers, and both the inner and outer parts have a sufficient amount of fibers of the same size as navy blue. Self-bonding was observed, and it had moderate flexibility.

FIG. 2 shows a pen nib (A1) for a nail polish pen as a specific example of the liquid supply body (A,) of the present invention.
This pen nib (A+) was molded according to Example 2 described in "-", and the IS 1 part (10) has a diameter cross section of rectangle, square, polygon, etc., and in Drawing -1- it is round bar-shaped, and the tail end is ¥! JI (11) has a circular conical shape Z, and the tip 'ItA R11 (12) has been polished to a flat tapered shape and weighted.

This pen nib (A1) has no looseness throughout including the tip (12), and the tip (12) has moderate flexibility and bends moderately along the nail, and has several white CP. The nail polish spilled onto the nails.

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 molding machines are used for applying and discharging liquids such as high viscosity and high concentration ink, and can generally be divided into the following three types.

1) A structure in which the pen tip, which is slidably attached to the tip of the body, is pressed against the coating surface, etc., and the valve mechanism in the body is thereby opened and closed, causing the pen tip to flow out through a so-called valve action.

(Unexamined Japanese Utility Model No. 57-11..1586) 2) Structure that opens and closes the valve by pressing the tail end of the body and supplies liquid to the pen tip at the tip of the body (Unexamined Japanese Patent Publication No. 6
(No. 1-107396, etc.) 3) The body itself is made of a flexible tube, and the liquid is supplied to the tip of the body by pressing the center of the body with your finger (push-id knock method). Disadvantages include a relatively complex structure and the need for a strong acid to prevent the nib used from deforming or collapsing due to the pressure it receives when opening and closing the valve, making it impossible to use a so-called brush-touch nib. Furthermore, it is unavoidable that the liquid flows out unnecessarily when the valve is opened and closed, and it is impossible to supply a high viscosity liquid of several cp, which cannot prevent the liquid from falling under its own weight. -F distribution MA
Structure 2) 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. However, like Structure 1), it is difficult to adjust the liquid volume and use high viscosity liquid. Have difficulty. In addition, a common drawback of 1) and 2) is that it is not possible to knock during 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 OK! It is made of bamboo duplex, and the inside is filled with a high viscosity liquid (nail polish paint), and the pen tip (A1) is fixed to the body (10) by means such as screwing, fitting, press-fitting, heat fusion, etc. Generally, removable fastening means are preferred. The liquid in the body is supplied to the pen tip (A1) by finger pressure, and is transferred from the tip of the pen tip to the application surface. On this occasion,
The liquid volume can be adjusted while controlling the application surface while supplying the liquid.
It is extremely good, with no dripping or scratching of the coated surface due to insufficient supply.

(Effects of the Invention) Therefore, the present invention has the following advantages. , ■
It has extremely high dimensional stability with almost no heat shrinkage problems in the core.

■ The fibers are uniformly dispersed in the radial cross section, with almost no difference in fiber density between the inside and outside, and there are no blocked areas.

■ Resin liquid is not required, and the accompanying solution selection, drying, selection of 1-nearing hard and 71-, migration shrinkage, resin facilitation shrinkage, and binding strength are also superior to blue bruises and are resistant. Because it is rich in ink, there are almost no ink restrictions, making it ideal for a variety of uses.

(2) Since each fiber is fused using its own jacket as a binding medium, both the inner and outer parts are evenly and firmly bound, and there are no spots of binding.

■ There are no binding spots or lack of binding strength on the inner and outer parts, and there are no cutting defects due to loose fibers when shaping the product shape, and it can be uniformly shaped into the desired shape according to various uses. .

■ There is no difference in IIMt density between the inner and outer parts, and there is no cohesion spot or lack of cohesion, so each part in the diameter cross section has equal pores and a large porosity, resulting in high viscosity and high porosity. ? l! You can ensure good ink flow once, and it is the strongest of the same ink! + The bundled state of the fibers does not break even under the desired extrusion pressure.

[Brief explanation of drawings]

FIG. 1 is a side view showing an embodiment of the liquid supply body of the present invention. FIG. 2 is an enlarged cross-sectional view of the composite fiber. FIG. 3 is an enlarged side view showing a pen tip for a nail polish pen as a specific example, and FIG. 4 is a plan view of the same. FIG. 5 is a T process diagram showing an example of manufacturing the liquid supply body of the present invention; FIG. 6 is a plan view showing the manicure pen shown in FIG. 3 and incorporating the nib. In the figure (A), the liquid supply body (1) is the composite fiber (1a), the core part (1b) is the outer sheath part.

Claims (1)

[Claims] Each composite fiber has directionality in the axial direction and has a core with a high melting point covered by a jacket with a low melting point.The composite fibers have pores with a diameter cross-sectional ratio of 60 to 85% due to partial thermal fusion of the jackets. A liquid supply body made of composite fibers for high viscosity and high concentration ink in the form of fiber bundles that are self-adhered to each other to form a viscosity.