JPS60107394A - Body impregnated with ink - 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] A method for manufacturing an ink-impregnated body suitable for use as a brush, a brush tip, a backing cloth for a printing belt, a type ribbon, a stamp pad, a surface cloth for a vermilion pond, etc., and an ink manufactured by this manufacturing method. This relates to an impregnated body.

Conventionally, materials used for pen core bodies as ink-impregnated bodies of this type include felt, synthetic fibers, etc. condensed to form a rod-shaped body, and thermoplastic synthetic resins with ink circulation holes in the center. Extrusion molding is often used. In addition, cotton cloth has generally been used as the surface cloth for vermilion ponds.

However, all of the materials using these materials had a common drawback of poor wear resistance. For example, pen cores are made of a collection of fine fibers, so they are soft and easy to write with (they are very useful even when used for long periods of time without getting tiring), but they are not wear resistant. There was a drawback that the pen core was worn out and deformed due to its particularly poor properties.Also, other impregnated materials such as brushes, brushes, brush tips, printing belt lining cloth, type ribbon, and ink pond. Each of the surface cloths and the like had the same kind of drawbacks.

Therefore, the present invention aims to provide an ink-impregnated body which eliminates these drawbacks and has particularly excellent abrasion resistance, and has the following contents.

FIG. 1 clearly illustrates typical steps in manufacturing the ink-impregnated body of the present invention. In the figure, A is a net-like alignment body for orderly aligning fibers. This arrayed body A is plate-shaped and has numerous small holes 1 formed on its surface. The material of this mesh-like arrayed body is wood, metal, etc.

Next, B is a conical hopper. The shape of this Ho-7per B has openings 2.3 at both left and right ends, and in particular, the opening 2 in the direction of the alignment body A has a large diameter. The material of this hopper B may be synthetic resin or metal.

Next, C is a heater. This heater C is electric 4
It has a heating hole 5 in the center. The inner shape of the heating hole 5 is arbitrarily determined, such as round or square, depending on the object to be molded.

Next, D is a cutter. Although this cutter D is illustrated as having blades in the vertical direction, it may have blades only in the upward direction.

A case will be described in which the ink-impregnated body according to the present invention is manufactured using the manufacturing apparatus described above.

First, the case of manufacturing a pen tip body will be explained.

[First example] (1) The materials used are as follows.

Main material Aromatic polyamide fiber (single fiber of 2 to 20 deniers) Additive material Acrylic fiber (single fiber of 1 to 10 denier) (2) Aromatic polyamide fiber of lO denier (product name: KEVLAR29), which is the main material for manufacturing method Aramid, manufactured by DuPont) 2
000 fibers were inserted into every other small hole 1 of the arrayed body A, and then this main material fiber A was passed through a hopper B to be bundled, and this was further inserted into a heating hole 5 of a heater C.

Next, add 6 denier acrylic fiber 800 as an additive material.
The books were inserted into the small holes 1 of the arrayed body A in the same way as the main material A, with appropriate unevenness. In this case, since the acrylic fibers, which are the main material A, have already been inserted into the small holes 1 in the arrayed body in an appropriately uneven state, the main material A is not inserted into the additive material opening. It was inserted into the remaining small hole l. Therefore, the main material A and the additive material port are mutually inserted into the small hole 1.

Next, this additive material port was inserted into the homper B and then into the heating hole 5 of the heater C. In the heating hole 5 of the heater C, the main material A and the additive material port are separated from each other as shown in FIG. 2, but they are inserted as a whole into a single fiber bundle X. Ta.

Next, after the main material A and the additive material port were placed in the above state, the heater C was energized and heated.

The heating temperature was selected from an appropriate temperature range around the melting point of the additive material.

In the case of this example, the acrylic fiber that is the additive material is about 1
It softens at 90℃ to 250℃, so at least about 190℃
Heating was carried out within the range of ~300°C.

Next, in the heated state as described above, the main material A and the additive material port were moved together in the heating hole 5 of the tensile heater in the direction of the blade. The moving speed varies depending on the length of the heating hole 5 of the heater, the heating temperature, and the amount of fiber used, but in this example, it was set to 260°C. The fiber bundle X moved while being heated through the heating hole 5 in the heater C in this way is heated so that the acrylic fiber, which is the additive material, is heated above the melting point of this fiber, so the additive material opening is between the main materials A and A. The fibers melted slightly or completely, and acted to bond adjacent aromatic polyamide fibers, which are the main material, to each other.

Since the aromatic polyamide fiber has a melting point of about 375° C., it does not change even if the acrylic fiber becomes molten. In other words, the aromatic polyamide fiber that is the main material and the acrylic fiber that is the additive material are partially integrated by melting the acrylic fiber that is the additive material in the state shown in Figure 2, and the whole becomes a rod-shaped fiber bundle. It can be summarized. Therefore, if necessary, pressurize the fiber bundle X between the main material A or between the main material A and the diagonal opening of the additive material, or between the additive material surface, when passing through the heating hole 5 of the heater C, or after passing through the heating hole 5 of the heater C. A method may be used to adjust the degree of adhesion between fibers.

Finally, the fiber bundle X passed through a heater C, was cooled as necessary, and was cut into appropriate lengths using a cutter D to obtain a material Y for pen tips, brushes, hems, brush tips, and the like.

This material Y has countless fine continuous pores inside, so the tip can be cut or flattened as necessary, or the tip can be made into a brush by releasing the bond between the main material and the additive material. It is preferable to impart tip-like flexibility. FIG. 3A shows a state in which the tip is cut to form a felt pen-like pen tip body 20 and set in a portion of the tip holder of the body of a writing instrument 21. When this writing instrument is used to write on paper, wood, metal, concrete, glass, cloth, etc., the ink contained in the writing instrument 11 transfers to the nib 10 and is formed inside the nib 10. The ink was transferred to the tip of the pen nib 10 through countless fine continuous pores 10, and it was possible to clearly write on the target object. Especially if you write continuously on metal, concrete, etc., acrylic & 1IlfI
There was extremely little wear compared to conventional pen nibs made of a single piece. This was due to the wear resistance of the aromatic polyamide fiber, which is the main material mixed inside.

Furthermore, even when writing was performed continuously for a long period of time, there was no ballast of the fibers at the tip, which conventionally occurs. This was because the main fibers or the main fibers and the additive fibers were sufficiently bonded to each other by the additive fibers. Figures 4(a), 5(b) and 5 respectively illustrate examples in which the above-mentioned pen tip 10 is used.

[Second example] (1) The materials used are as follows.

Additive material: Polyacetal resin (trade name: Duracon) Main material: Aromatic polyamide fiber (single fiber of 1 to 30 deniers) Add polyamide fiber, the main material, to the polyacetal resin raw material, which is the additive material, and heat it to a molten state. The mixture was thoroughly mixed and extruded, and at the same time an ink flow hole 53 was formed in the center.

This rod-shaped body is cut to an appropriate length, both ends are machined, and it is fixed to the tip of a writing instrument holder 50 containing ink and used as a pen core body 51 as shown in FIG. 3 (b). Due to the excellent abrasion resistance of the aromatic polyamide fiber 52, which is the main material mixed in the pen core, wear of the pen core is extremely reduced, making it possible to manufacture a pen core with excellent durability. .

[Third example] (1) The materials used are as follows.

Main material: Aromatic polyamide fiber (5-30 denier monofilament) Additive material: Acrylic fiber (3-15 denier monofilament) Main material: 15-denier aromatic polyamide fiber (product name: KEVLAR Aramid (Dupont) 6000 The book, 10 denier polyester fiber as an additive material, and 3000 pieces of 30 denier cotton cloth were woven into a medium-wide cloth using a cloth loom.This cloth had each of the above three types of threads woven into it appropriately. This cloth was cut into a tape shape of a suitable medium size and impregnated with ink to form a type ribbon 30 as shown in FIG.

Further, a synthetic rubber or natural rubber material was superimposed on the above fabric, placed in a vulcanization mold, and vulcanized under pressure to produce a printing belt 40 as shown in FIG. 7. The printed portion 41 may be a porous rubber stamp having countless fine continuous pores, if necessary.A cloth made of wood is integrally attached to the lower part of the printed portion 4I.

Next, the cloth is ink-impregnated and the surface cloth of the stamp pad is coated with an ink-impregnated pad. When the type ribbon, printing belt, vermilion pond, and stamp pad manufactured in this example were used for each purpose, it was found that the type ribbon was superior due to the excellent abrasion resistance and tensile strength of the aromatic polyamide fiber, which is the main material. , the durability has been more than doubled, and the length of the belt will not stretch during use, and the stamp pad will not tear even when used for long periods of time with stamps made of ivory, crystal, etc. No more wrinkles.

As described above, the present invention improves the wear resistance of aromatic polyamide fibers,
Since the ink-impregnated body was manufactured using tensile strength, the above-mentioned effects can be exhibited depending on each application.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram for manufacturing a rod-shaped body. FIG. 2 is a cross-sectional view of the rod-shaped body. Figure 3 (a) is an example of how the pen core is used. Figure 3 (b) shows an example of the use of another pen core. FIG. 3(C) is a sectional view of the pen core shown in FIG. 3(B). Figure 4 (a) is an example of use for hega. FIG. 4(b) is a diagram showing the case of applying to the stamp pad. Figure 5 shows an example of the tip of a brush. Figure 6 shows an example of an ink ribbon. Figure 7 is an example of a printing belt. Figure 8 shows an example of a vermilion pond and a stamp stand. A: Aligned body A: Main material Low additive material or higher

Claims (1)

[Claims] An ink-impregnated body with excellent abrasion resistance and tensile resistance manufactured by using aromatic polyamide fiber as the main material and adding optional additive materials thereto.