JP2014208425A - Applicator - Google Patents

Abstract

Even if the coating liquid in a coating liquid storage cylinder provided with a coating part has a high viscosity, it is sufficiently supplied to the coating part, and the curable oil follows the coating liquid without collapsing, and is uniformly applied. An applicator capable of discharging the liquid is provided. A coating liquid storage cylinder 1 is provided with a coating section 2 at the tip and filled with a coating liquid 3 supplied to the coating section, and the coating liquid is filled inside the coating liquid storage cylinder. A curable oil 5 is provided at the rear end of the liquid, and a pressing means for pressing the curable oil is provided behind the pressing member 6, and the surface of the pressing means on the curable oil side is formed as a convex surface. A coating liquid container. [Selection] Figure 1

Description

  The present invention relates to an application liquid storage cylinder used for an application tool such as a ballpoint pen, and an application tool using the application liquid storage cylinder.

  Patent Document 1 is made of a material exhibiting low gas permeability or gas impermeability, in which a writing tip is provided at the front end, the ink and follower supplied to the writing tip are accommodated therein, and the rear end is closed. A gas-pressurized writing instrument comprising a tube body and a pressurized gas sealed in the tube body is described.

  Patent Document 2 discloses a pressurizing type that has a tip of a ballpoint pen at its tip, is filled with a follower that follows ink and ink in a rear ink container, and is further provided with a pumping type pressurizing mechanism behind it. A ballpoint pen is described.

  Patent Document 3 discloses a ballpoint pen including a core member that is rotatably mounted at the tip and filled with ink, and a pen housing that supports the core member, and is provided inside the pen housing. And at least when the user grips the grip portion of the pen housing, an airtight chamber that is airtight with respect to the outside, and a grip of the pen housing that is provided in the grip portion of the pen housing. A heat transfer section that transfers heat to the air in the hermetic chamber and air that has expanded in the hermetic chamber act on the end surface of the ink in the core member, so that the airtight chamber communicates with the interior of the core member. There is described a ballpoint pen characterized in that it is provided with a communication path formed in this manner.

  In Patent Document 4, a medium accommodating tube in which a medium is accommodated is held in a main body cylinder, and is provided at the rear end of the main body cylinder at the rear of the rear end of the opening of the medium accommodating pipe. In conjunction with the knocking operation of the knock mechanism, a pressurizing pump mechanism that pressurizes the inside of the rear end of the opening of the medium accommodating tube is provided. This pressure adjustment mechanism is equipped with a pressure adjustment mechanism that can maintain the applied pressure in the rear end of the opening of the medium accommodating tube during the knocking operation substantially constant without being affected by the decrease in the remaining amount of the medium. An air passage provided in communication between the rear end of the opening of the medium accommodating tube and the pressurizing pump mechanism; an air passage provided in communication with the vent passage; and the opening of the medium accommodating tube from the pressurizing pump mechanism. Can be swelled by excess pressurized air pumped toward the rear end A stationery comprising: an air reservoir portion; and an urging means that urges the air reservoir portion in a crushing direction so as to be in a crushing deformation state in a ventilation state of the pressure pump mechanism when not in use. Have been described.

  In Patent Document 5, the shaft tube is disposed so as to be movable in the axial direction in the shaft tube, and can be moved to a position protruding from the tip of the shaft tube and a position retracted in the shaft tube. A liquid storage tube having a tip supply unit and storing a liquid; and a rotary cam mechanism capable of moving the liquid storage tube back and forth, wherein the rotary cam is movable between a forward position and a backward position. A rotating cam mechanism configured to be switched between a forward position and a backward position by axial movement and rotation of the rotating cam; and a position where the tip supply portion protrudes from the rotating cam mechanism. And a pressurizing space in which the inside of the liquid storage tube can be pressurized and the rotary cam receives a force in the axially forward direction from the pressurizing space. A liquid supply device is described which is characterized by .

Patent Document 6 describes an ink follower using room temperature curable silicone rubber in a ballpoint pen that contains ink directly in an ink containing tube.
The inventions described in Patent Documents 1 to 5 are for ink storage in a writing instrument such as a ballpoint pen, by the expansion of gas by the pressure means or the heat of the finger against the ink stored in the ink storage section and the follower located at the rear end. In this invention, the ink is pressurized toward the tip of the part, but the material of the follower is not particularly limited.
The invention described in Patent Document 6 is an invention in which a specific resin is used as a follower positioned at the rear end of the ink in the ink storage portion of the ballpoint pen, and the invention described in Patent Document 7 is also a silicone oil as a follower. The invention that has been used and described in Patent Document 8 is an invention that can employ silicon rubber as a follower, but the ballpoint pen is not of a type that pressurizes ink.

  Patent Document 9 discloses a coating liquid storage cylinder that includes a coating section at the tip and is filled with a coating liquid supplied to the coating section, and the coating liquid filled in the coating liquid storage cylinder. A coating liquid storage cylinder provided with a curable oil at the rear end and further provided with a pressing means for pressing the curable oil behind, and when the pressing means is a spring or a weight, It is described that a cylindrical pressing member having a flat cross section is provided between curable oils.

JP 2003-291580 A JP 2006-264129 A JP 2009-285985 A JP 2010-105309 A JP 2010-125715 A JP-A-11-115368 JP 2001-080272 A JP 2004-106485 A JP 2012-131071 A

Ballpoint pens and the like equipped with the ink storage unit described in each of the above-mentioned patent documents push the ink to the ink application unit side by applying pressure from the follower side provided behind the ink in the ink storage unit, thereby smoothly Is intended to be supplied to a coating part such as a ballpoint pen, but the follower may have insufficient sealing properties or may not sufficiently follow the ink.
Further, with a ballpoint pen that does not pressurize, in the case of a highly viscous ink, a sufficient amount of ink may not be supplied toward the writing portion.
Furthermore, according to Patent Document 9, by providing the pressing member between the curable oil and the pressing means, the coating liquid is used while uniformly pressing the coating liquid inside the coating liquid storage cylinder that is used and reduced. A method is disclosed in which a coating liquid can be used so that a uniform coating amount can be obtained even when the coating liquid inside the housing cylinder decreases. However, when the curable oil moves in the direction of the discharge part together with the coating liquid as it is actually used, the curable oil has a concave end surface instead of a flat end surface. When the pressing member is intensively contacted with the peripheral portion of the concave surface and the portion in contact with the inner wall of the coating liquid storage cylinder, the peripheral edge is further pressed against the inner wall of the coating liquid storage cylinder. It is not pressed uniformly by the pressing member. For this reason, large fluctuations in the flow rate of the coating liquid between the coating liquid storage cylinders, or the curable oil is not pressed uniformly as the applicator is used, causing irregular fluctuations or unevenness in the flow rate of the coating liquid. There is a concern to do.

1. A coating liquid storage cylinder provided with a coating section at the tip and filled with a coating liquid supplied to the coating section, and a curable mold at the rear end of the coating liquid filled in the coating liquid storage cylinder A coating liquid storage cylinder in which oil is provided and a pressing means for pressing the curable oil via a pressing member is provided on the rear side, and a surface of the pressing member on the curable oil side is formed as a convex surface.
2. 2. The coating liquid container according to 1, wherein the curable oil is curable silicone.
3. 3. The coating liquid storage cylinder according to 1 or 2, wherein a curable oil is provided at the rear end of the coating liquid filled in the coating liquid storage cylinder via a backflow stopper.
4). 4. The coating liquid container according to 3, wherein the backflow stopper is made of a material having polybutene.
5. The coating liquid storage cylinder according to 3 or 4, further comprising a layer made of the same material as the backflow preventing material between the pressing member and the inner wall of the coating liquid storage cylinder and between the curable oil and the inner wall of the coating liquid storage cylinder.
6). 6. The coating liquid storage cylinder according to 5, having a layer made of the same material as the backflow preventing material between the pressing member and the coating liquid storage cylinder inner wall and between the curable oil and the coating liquid storage cylinder inner wall when not in use. .
7). The outer diameter of the pressing member is the coating liquid storage cylinder according to any one of 1 to 6 smaller by 0.001 to 0.5 mm than the inner diameter of the coating liquid storage cylinder.
8). The coating liquid storage cylinder according to any one of 1 to 7, wherein the pressing means is compressed air, a spring, or a weight.
9. The diameter of the inner surface of the coating liquid storage cylinder is smaller as the coating portion is closer, and the inner surface of the coating liquid storage cylinder has a conical shape with the length direction of the coating liquid storage cylinder as the rotation axis, and the intersection of the rotation axis and the bus bar The coating liquid storage cylinder according to 1 to 7, wherein the angle to be applied is 0.14 degrees or less.
The applicator formed using the coating liquid storage cylinder in any one of 10.1-9.
11. A coating liquid storage cylinder provided with a coating part at the tip and filled with a coating liquid supplied to the coating part, and backflow-prevented at the rear end of the coating liquid filled in the coating liquid storage cylinder The curable oil is provided via the pressing member, and a pressing means for pressing the curable oil is provided behind the pressing member, and the surface of the pressing means member on the curable oil side is formed as a convex surface. A method for manufacturing a liquid container,
A step of injecting the coating liquid from the opening at the rear end opposite to the coating section of the coating liquid storage cylinder provided with the coating section;
After that, after providing a backflow prevention, a pressing member and a pressing means, the coating liquid and the backflow prevention, against the pressing member and the pressing means, by centrifugal treatment and vibration, against the coating liquid, backflow prevention, curable oil, The coating liquid storage cylinder according to any one of 3 to 9, which includes a step of applying a force to move the coating liquid storage cylinder toward the front to bring them into close contact with each other and bringing the coating liquid into close contact with the pen tip or the coating section. Manufacturing method.

  According to the present invention, the coating liquid in the coating liquid storage cylinder provided with the coating part is sufficiently supplied to the coating part even if the viscosity is high, and the curable oil follows the coating liquid without collapsing, Since the curable oil has elasticity, the coating liquid does not leak backwards even when pressurized. Therefore, variation in the coating amount of the coating liquid between different coating liquid storage cylinders can be prevented, and the coating liquid can be uniformly discharged without being pressed unevenly as the applicator is used. Demonstrate that it is possible.

The schematic diagram of the coating liquid storage cylinder of this invention. The schematic diagram regarding the effect by this invention. The graph of the transition of the outflow amount by the round press board in which the convex surface which is a press means by this invention was formed, and the conventional press board in which the convex surface is not formed

The present invention is a coating liquid container having a specific structure and an applicator using the coating liquid container, and will be described in order below with reference to the drawings.
First, the coating liquid container and the applicator of the present invention are provided with the coating liquid so that the ink, the correction liquid, and the cosmetic can be more reliably supplied toward the coating part provided at the tip of the coating liquid container. A coating liquid storage cylinder in which the curable oil provided at the rear end is further pressed from behind, and an application tool using the coating liquid storage cylinder.

[Coating liquid container and applicator]
The applicator of the present invention is a writing instrument such as a ballpoint pen or a felt pen or a corrector, an eyeliner, a lip, a cosmetic applicator such as a nail enamel, a concealer, etc. Are filled with a coating liquid such as ink for writing instruments, a correction liquid, or a cosmetic.
Specifically, in the applicator shown in FIG. 1, the application liquid storage cylinder 1 is provided with an application part 2 for applying the application liquid to an object at the tip thereof, and the application liquid 3 is provided therein. A curable oil 5 is provided as a follower at the rear end of the coating liquid 3 through a backflow stopper 4 formed of polybutene or the like as necessary. Then, the pressing member 6 is pressed by the pressing means such as the spring 7, and the curable oil 5 is pressed toward the application unit 2, whereby the application liquid 3 is discharged from the application unit 2 toward the object. . At this time, the surface of the pressing member 6 on the side in contact with the curable oil 5 has a convex shape.

The coating liquid storage cylinder 1 is made of a known resin or metal, and has a known size corresponding to the application. The inner surface of the coating liquid storage cylinder can have a tapered shape that narrows toward the coating portion 2. In the case of the tapered shape, the angle is 0.14 degrees or less, that is, the diameter of the inner surface of the coating liquid storage cylinder is smaller as it is closer to the coating portion, and the inner surface of the coating liquid storage cylinder is the coating liquid storage cylinder It is preferable that the angle between the rotation axis and the generatrix is 0.14 degrees or less, more preferably 0.10 degrees or less, more preferably 0. It is less than 05 degrees.
Moreover, it is preferable that the difference between the inner diameter at the front end and the inner diameter at the rear end of the coating liquid storage cylinder is in a range of 0.1 mm or less. Due to the difference in the inner diameter, it is possible to suppress a decrease in the coating amount that occurs with use.
As the application part 2 provided at the tip of the application liquid storage cylinder 1, a known ballpoint pen tip, a known felt pen tip, or an application part used for cosmetics is employed.

  And as an applicator, the applicator which has a well-known shape required in order to be used for said each use can be selected. Therefore, an air hole may be provided in the tail plug provided at the rear end of the coating liquid storage cylinder so that the inside and the outside of the coating liquid storage cylinder communicate with each other. As an air hole at this time, it is good also as a shape which provides the small pipe | tube for air communication toward the inside of a coating liquid storage cylinder from the back of a tail plug. By providing the cylinder in this way, it is possible to prevent the coating liquid from leaking to the outside.

[Coating solution]
The coating liquid 3 used in the present invention is supplied to the coating section 2 and discharged by being pressed from behind through the curable oil 5 filled in the coating liquid storage cylinder 1 and provided at the rear end. Is.
The coating liquid 3 may be water-based or oil-based, such as ink for ballpoint pens, ink for writing instruments such as felt pen ink whose pen tip is made of felt, correction liquid, eyeliner, lip, nail enamel, cosmetics such as concealer, etc. It is necessary that the physical properties have fluidity of an appropriate level to be supplied to the application part by being pressurized. Thus, the coating liquid that is pressurized and exhibits appropriate fluidity has a higher viscosity than conventional writing instrument inks and the like, and conventional ballpoint pen tips cannot be sufficiently written due to clogging or the like. There was a thing. However, according to the present invention, even a highly viscous ink can be sufficiently written with a conventional ballpoint pen tip.
Similarly, a coating solution that can be written by being impregnated in a fibrous writing part, which is used for a writing instrument such as a core type, felt pen, or brush pen, has a higher viscosity than a conventional coating solution. When pressed as in the present invention, the viscosity of the coating solution is reduced, and the coating can be applied while being impregnated in the gaps of the fibers.

The ink for the ballpoint pen may be a gel ink or an ink that does not exhibit a gel shape, and the felt pen ink may be either water-based or oil-based. Furthermore, even when an ink having a higher viscosity than that of a commonly used ink is employed, the ink can be ejected from the pen tip by a pressure mechanism. These inks can be obtained by blending known pigments, dyes, resins, thickeners, thixotropic agents, solvents, dispersants, and various additives. The viscosity of these inks is 5 to 100,000 mPa · s, preferably 10 to 50000 mPa · s, and more preferably 20 to 30000 mPa · s.
As the correction liquid, a liquid prepared by blending a known component such as a pigment such as titanium dioxide and a solvent or a dispersant can be used.
Concerning cosmetics such as eyeliner, lip, nail enamel, concealer and the like, those obtained by blending known ingredients according to the types of the cosmetics can be used. The viscosity of these correction fluids and cosmetics is 5 to 100,000 mPa · s, preferably 10 to 50000 mPa · s, and more preferably 20 to 20000 mPa · s.
These viscosities are clearly higher than about 10 mPa · s, which is an ink viscosity of a general oil marker, and 10-8000 mPa · s, which is an ink viscosity of a general ballpoint pen.
This viscosity is measured with a rheometer (value when shear rate is 1 [1 / s] when CR-Flow Curve measurement is performed at 20 ° C. using a RHEo Stress RS75, C35 / 1 cone plate manufactured by HAAKE). Is the result.

[Hardening oil]
The curable oil 5 used in the present invention is preferably a curable silicone such as a two-component curable silicone. Examples of the silicone that is cured by a condensation reaction include organopolysiloxanes having at least two silanol groups and tin-based silicones. As a silicone that cures by an addition reaction, an organopolysiloxane having an alkenyl group bonded to at least two silicon atoms per molecule and at least two silicon atoms per molecule can be used. A compound containing an organosilicon compound having a hydrogen atom bonded to and an addition reaction catalyst such as a platinum-containing catalyst can be used.
Furthermore, the curable oil 5 can be blended with known additives such as fillers such as silica and calcium carbonate, colorants, lubricants, stabilizers and the like.

By adopting such a curable oil 5 in the present invention, the shape of the curable oil 5 does not collapse and change throughout the period of use of the applicator, and the curable oil 5 is applied in the coating liquid storage cylinder 1. The liquid 3 can be followed. Moreover, in order to reduce the friction between the inner wall of the coating liquid storage cylinder 1 and the curable oil, an additive such as a lubricant is blended in the curable oil 5 so that the additive is added from the curable oil 5 at the time of use. Soaks out and allows the curable oil 5 to follow the coating liquid 3 more smoothly.
Since the curable oil 5 has an appropriate degree of elasticity, the curable oil 5 can be in close contact with the inner wall of the coating liquid storage cylinder 1 and the coating liquid 3 can be reliably sealed. There is no leakage behind 5.

[Pressing means]
The pressing means in the present invention is not limited as long as it is a means for pressing the curable oil 5 through the pressing member 6, but pressurized air, a spring, which is employed in a mechanism used in a known pressure ballpoint pen, A means capable of pressing an object such as a weight or a combination of these can be employed.
As shown in FIG. 1, the pressure by the spring 7 is more stable during the period of use of the applicator because the change in the pressing force due to the remaining amount of the coating liquid 3 in the coating liquid storage cylinder 1 is smaller than the pressure by the gas. In particular, the pressing member 6 can be pressed and the coating liquid 3 can be supplied to the coating unit 2, which is preferable. Further, pressing by gas is also preferable because the surface on the rear end side of the pressing member 6 can be pressed uniformly. When pressing with gas and pressing with the spring 7, in any other case, it is desirable to provide the pressing member 6 between the pressing means and the curable oil 5 in order to make the pressing force uniform.
When a spring is used as the pressing means, it is necessary that the spring does not contact the inner surface of the coating liquid storage cylinder. When the spring is compressed, the outer diameter of the spring is equal to the inner diameter of the inner wall of the coating liquid storage cylinder. The difference is preferably 0.5 mm or less in order to stably apply a pressing force to the rear end of the pressing member over the entire use period.
When a spring is employed, it is necessary to make the outer diameter of the compressed state smaller than the inner wall surface of the coating liquid storage cylinder without bending the both ends inward and forming the end winding.

When a pressing means using pressurized gas is adopted as the pressing means, although not shown, for example, a pressing mechanism that works in conjunction with a knock mechanism of a ballpoint pen is provided, or a pressurized gas is previously applied behind the curable oil 5. Filling and sealing the rear end of the main body of the coating liquid storage cylinder 1 with a lid may always press the coating liquid 3 toward the coating section 2.
Further, when the pressing means using the spring 7 is employed, the spring is positioned in a compressed state between the rear end of the pressing member 6 and the lid that seals the rear end of the coating liquid storage cylinder 1 to thereby apply the coating liquid. Can be pressed.

In the case of using a weight as the pressing means, although not shown, the coating liquid 3 is directed to the coating portion 2 side either directly on the rear end surface of the curable oil 5 or via the pressing member 6. A weight can be inserted in the coating liquid storage cylinder 1 so as to be movable in the axial direction of the cylinder. The material of the weight is determined by the required degree of pressing, and it is necessary that the weight is insoluble in the oil or solvent and has no reactivity.
Since an applicator such as a normal writing instrument orients the applicator 2 downward when in use, a curable oil is used when the rear end side of the pressing member 6 in the coating liquid storage cylinder 1 or the pressing member 6 is not used. The weight inserted on the rear end side of the roller 5 moves downward by its own weight, that is, toward the coating unit 2 side, and pushes the coating liquid 3 toward the coating unit through the curable oil 5 by its own weight. Pressure can be applied.
If the weight is used, even if the application liquid 3 in the application liquid storage cylinder 1 decreases as the application tool is used, the pressing force itself may decrease as in the case of the above-described spring or pressing means by pressure. In addition, a constant pressing force can be applied to the coating liquid 3 throughout the use period of the applicator.
While having such excellent characteristics, the pressing force related to the coating liquid 3 changes depending on the angle of the applicator, and when the applicator is turned horizontally or the tip of the applicator is turned upward from the horizontal, Since the pressing force relating to the coating liquid is 0, it is necessary to pay attention that the supply of the coating liquid 3 toward the coating unit 2 is not smoothly performed.

[Pressing member]
The pressing member used in the present invention is located between the pressing means 7 and the curable oil 5 like the pressing member 6 as shown in FIG. It is necessary to have a convex shape such as a cone or a chamfered cylindrical shape. In addition, it is preferable that the length in the longitudinal direction of the coating liquid container of the pressing member is larger than the diameter of the pressing member in order to move it stably. The outer diameter of the pressing member is preferably 0.001 to 0.5 mm smaller than the inner diameter of the coating liquid storage cylinder. When the thickness is less than 0.001 mm, it becomes difficult to provide a layer made of the same material as the backflow stopper 4 between the inner surface of the coating liquid storage cylinder and the outer surface of the pressing member. Since the gap between the cylinder and the pressing member becomes large, it is difficult to prevent the coating liquid from leaking behind the pressing member.

FIG. 2 shows how the curable oil 5 is pressed by adopting such a convex shape.
(A)-(c) of FIG. 2 is a figure which presses the curable oil by the conventional press member, (a) is before a press start. In (a), the curable oil 5 is in close contact with the surface of the pressing member 6, but when the amount of the coating liquid in the coating liquid storage cylinder is reduced using the coating liquid, as shown in (b), Due to the volume reduction of the coating liquid in the coating liquid storage cylinder, the curable oil in contact with the coating liquid also moves in the direction of the arrow, and the rear end α forms a recess on the rear end surface of the curable oil. Therefore, a space tends to be generated between the concave portion and the surface of the pressing member 6.
When the applicator is used in this state, the curable oil 5 and the pressing member 6 move, and the pressing member 6 squeezes the recess at the rear end of the curable oil 5 as shown in FIG. Thus, a force is applied in a direction in which the peripheral portion of the concave portion is further pressed toward the peripheral portion, and as a result, the curable oil is pressed toward the inner wall surface in the coating liquid storage cylinder. For this reason, the curable oil 5 does not move smoothly as the applicator is used, and it is difficult to press the coating liquid uniformly through the curable oil.

However, according to the present invention, as shown in (d), the surface of the pressing member 6 on the curable oil side is formed in a convex shape such as a spherical surface or a triangular pyramid surface, so before using the coating liquid. Also, the close contact between the pressing member 6 and the curable oil 5 is made along the convex shape.
As a result, even when the volume of the coating liquid in the coating liquid storage cylinder is reduced by using the applicator and the curable oil 5 and the pressing member 6 are moved in the direction of the arrow as shown in FIG. The pressing member 6 and the curable oil 5 still follow the convex shape of the front surface of the pressing member 6.
As a result, as shown in the drawings (a) to (c), there is no phenomenon in which the curable oil 5 is not smoothly moved with respect to the inner wall surface in the coating liquid storage cylinder as the coating liquid is used. Even when the applicator is used, the pressing force by the pressing means can be reliably transmitted to the application liquid, and the applicator can be used stably throughout the period of use.
And as such a press member, it can select and use arbitrarily from the material which does not deform | transform even if it receives the pressure by the press means, such as resin, such as a polypropylene, an ABS resin, a polystyrene resin, or metal.

[Backflow prevention]
In the present invention, polybutene or mineral oil can be used as a backflow stopper, and it can be gelled with a gelling agent so as to have an arbitrary viscosity so that the coating solution can be sealed. In the present invention, it is preferable to use polybutene from the viewpoint of preventing the coating liquid from drying, and smoothly forming a layer made of a backflow preventing material between the curable oil and the inner wall of the coating liquid storage cylinder.
In the present invention, when a backflow stopper is provided between the curable oil and the coating liquid, the application tool is used, and the pressure is increased as the rear end of the coating liquid in the coating liquid storage cylinder advances toward the tip. The pressing member pressed by the means presses the curable oil toward the tip, and the curable oil and the backflow stopper are also pressed toward the tip.
As a result, in the coating liquid storage cylinder, the backflow stopper, the curable oil, and the pressing member are in close contact with each other at the rear end of the coating liquid and move toward the leading end as a whole.
At this time, the backflow stopper has a role of coating the inner wall of the coating liquid storage cylinder to form a thin layer, so that the friction resistance when the curable oil and the pressing member move to the tip portion is reduced, and the curable It is possible to hermetically seal between the oil or the pressing member and the inner wall of the coating liquid storage cylinder.

As described above, the same material as the backflow preventing material may be coated on the inner wall of the coating liquid storage cylinder as it is used, but in the present invention, the rear end of the coating liquid before the start of use is the tip of the coating liquid storage cylinder. In the state where it has not moved, the layer made of the same material as that of the backflow stopper may already be formed between the pressing member and the inner wall of the coating liquid storage cylinder and between the curable oil and the inner wall of the coating liquid storage cylinder.
In this case, at the time when the pressing member starts moving toward the tip of the coating liquid storage cylinder immediately after the start of use, the pressing member is in a state where the frictional resistance is reduced by the layer made of the same material as the backflow stopper. It is possible to move and to keep the airtightly sealed between the pressing member and the inner wall of the coating liquid storage cylinder.

As a method for producing the coating liquid storage cylinder of the present invention, for example, a method of filling ink in an ink filling portion such as a sign pen or a ballpoint pen can be employed.
That is, a coating liquid storage cylinder to which a pen tip and a coating section are attached in advance is prepared, and the coating liquid is injected from the opening at the rear end opposite to the coating section of the coating liquid storage cylinder.
Thereafter, if necessary, a backflow stopper is injected from the rear end of the coating liquid storage cylinder, and further curable oil is injected from the rear end of the coating liquid storage cylinder.
Continue to provide a pressing member and pressing means, and after capping the opening, or before providing the pressing means, by means of centrifugal treatment, vibration, etc., the coating liquid, curable oil, and if necessary, backflow prevention On the other hand, it can be moved in a short time toward the front of the coating liquid storage cylinder to bring them into close contact with each other, and the coating liquid can be brought into close contact with the pen tip or the coating portion.

When using the backflow stopper, the backflow stopper is supplied to a position where the pressing member in the coating liquid storage cylinder, which is away from the rear end of the coating liquid, should be positioned first, and the pressing member of the coating liquid storage cylinder is A backflow stop may be brought into contact with the inner wall of the first place.
After that, when the backflow stopper is moved to the front of the coating liquid storage cylinder by means of centrifugation, vibration or the like as described above, the backflow prevention material is applied to the inner wall of the location where the pressing member of the coating liquid storage cylinder is first arranged It becomes possible to form a layer.

[Ink composition]
The ink composition used in the examples was produced as follows. The following “parts” are all “parts by weight”.
Propylene glycol 15.0 parts, Neocor YSK 0.5 part, KF-6011 0.2 part, Elgineo # 325 SILVER 0.8 part, Mobile LDM7520 10.0 part, Primal AC-3001 60.0 part, Water 6.2 part ASE-60 25P 6.0 parts, Proxel XL-2 0.2 parts, Coatside PH2 0.2 parts, P-30A Color Base # 3 0.9 parts were mixed and stirred to prepare an aqueous ink composition.
The pH of the obtained ink composition was 8.3.
Based on JIS K2283, using a viscometer (“TVE22HT”), the viscosity at 20 ° C. was 8.12 Pa · s at 0.5 rpm at 1.34 cone.

<Examples and Comparative Examples>
The ink storage part of the writing instrument having an inner diameter of the coating liquid storage cylinder, which is an ink storage part, of 8.0 mm and a total length of 102.2 mm is filled with the ink composition described above, and a polybutene backflow stopper is provided at the rear end of the ink. A writing tool was prepared by providing a curable oil and a spring, sealing the rear end of the coating liquid storage cylinder, and applying a pressing force to the rear end of the curable oil by compressing the spring. At this time, as the pressing member, five coating liquid storage cylinders of the example in which the surface of the curable oil side is a round press plate having a convex shape, and a comparative coating liquid storage of a conventional flat shape instead of the convex shape Five tubes were prepared.
Using the writing instrument having these coating liquid storage cylinders, the writing angle with respect to the paper was set to 65 °, and the writing instrument was written on the paper at a speed of 7 cm / s while applying a load of 100 g.
FIG. 3 shows the ink outflow amount every 20 m of the handwriting at that time.
According to the results shown in FIG. 3, the coating liquid storage cylinder of the present invention which is a round press plate tends to decrease the outflow amount as the writing distance is extended by any coating liquid storage cylinder. There is no significant difference in the tendency and outflow between the tubes. However, according to the comparative example using the conventional coating liquid storage cylinder (in FIG. 3, 1 and 2 are the same on the graph with no difference in the result of the coating liquid storage cylinder), the five coating liquid storage cylinders The four ink outflows are smaller than the ink outflows of the coating liquid storage cylinders of the examples, and the tendency of the change in the outflows due to the extension of the writing distance varies, and the outflows increase as the writing distance increases. It was unpredictable, for example, when there was an increase, a decrease, or there was some that did not flow out.

DESCRIPTION OF SYMBOLS 1 ... Coating liquid storage cylinder 2 ... Coating part 3 ... Coating liquid 4 ... Backflow prevention 5 ... Curing type oil 6 ... Pressing member 7 ... Spring

Claims (11)

  A coating liquid storage cylinder provided with a coating section at the tip and filled with a coating liquid supplied to the coating section, and a curable mold at the rear end of the coating liquid filled in the coating liquid storage cylinder A coating liquid storage cylinder in which oil is provided and a pressing means for pressing the curable oil via a pressing member is provided on the rear side, and a surface of the pressing member on the curable oil side is formed as a convex surface.   The coating liquid container according to claim 1, wherein the curable oil is a curable silicone.   The coating liquid storage cylinder according to claim 1 or 2, wherein a curable oil is provided at a rear end of the coating liquid filled in the coating liquid storage cylinder via a backflow stopper.   The coating liquid storage cylinder according to claim 3, wherein the backflow stopper is made of a material having polybutene.   The coating liquid storage cylinder according to claim 3 or 4, further comprising a layer made of the same material as the backflow preventing material between the pressing member and the inner wall of the coating liquid storage cylinder and between the curable oil and the inner wall of the coating liquid storage cylinder.   6. The coating liquid according to claim 5, further comprising a layer made of the same material as the backflow preventing material between the pressing member and the inner wall of the coating liquid storage cylinder and between the curable oil and the inner wall of the coating liquid storage cylinder when not in use. Containment tube.   The coating liquid container according to any one of claims 1 to 6, wherein an outer diameter of the pressing member is 0.001 to 0.5 mm smaller than an inner diameter of the coating liquid container.   The application liquid storage cylinder according to any one of claims 1 to 7, wherein the pressing means is compressed air, a spring, or a weight.   The diameter of the inner surface of the coating liquid storage cylinder is smaller as the coating portion is closer, and the inner surface of the coating liquid storage cylinder has a conical shape with the length direction of the coating liquid storage cylinder as the rotation axis, and the intersection of the rotation axis and the bus bar The coating liquid storage cylinder according to claim 1, wherein an angle of the coating liquid is 0.14 degrees or less.   The applicator formed using the coating liquid storage cylinder in any one of Claims 1-9. A coating liquid storage cylinder provided with a coating part at the tip and filled with a coating liquid supplied to the coating part, and backflow-prevented at the rear end of the coating liquid filled in the coating liquid storage cylinder The curable oil is provided via the pressing member, and a pressing means for pressing the curable oil is provided behind the pressing member, and the surface of the pressing means member on the curable oil side is formed as a convex surface. A method for manufacturing a liquid container,
A step of injecting the coating liquid from the opening at the rear end opposite to the coating section of the coating liquid storage cylinder provided with the coating section;
After that, after providing a backflow prevention, a pressing member and a pressing means, the coating liquid and the backflow prevention, against the pressing member and the pressing means, by centrifugal treatment and vibration, against the coating liquid, backflow prevention, curable oil, The coating liquid according to any one of claims 3 to 9, further comprising a step of applying a force for moving the coating liquid storage tube toward the front to bring them into close contact with each other and bringing the coating liquid into close contact with the pen tip or the coating portion. A method of manufacturing the housing cylinder.