JP2001138612A - Method for producing gray fabric for ink ribbon and basic cloth for ink ribbon - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a gray fabric for ink ribbon having excellent print service life and satisfying the weaving properties and productivity as the gray fabric for ink ribbon, and a basic cloth for ink ribbon. SOLUTION: The method for producing the gray fabric for ink ribbon employs a weaving machine for inserting a woof by high pressure fluid system in the method for producing the gray fabric for ink ribbon composed of polyamide multifilament yarn.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a fabric for an ink ribbon used in a printer which is a terminal of a computer or an impact type dot printer such as a typewriter and a register. . More specifically, the present invention relates to weaving a woven fabric,
A method for producing a high-quality and highly productive greige fabric for ink ribbons, characterized by employing a high-pressure fluid system for weft insertion in weaving, and a base fabric for ink ribbons having excellent print life. About.

[0002]

2. Description of the Related Art Ink ribbons are mainly mechanically impacted by a typewriter, a register, a printer used as a terminal of a personal computer, and the like, that is, the impact of a dot wire pin, a metal type plate or the like is given to the ink ribbon. It is well known that the contained ink is transferred to print paper to form characters and the like.

As a material used as a base fabric of such an ink ribbon, synthetic fibers such as polyamide having a large mechanical resistance are generally used. Normally, the ink ribbon is subjected to repeated impacts by the head pins of the printer or metal type plate, etc., causing damage to the characters to be printed and the ink ribbon to be destroyed, resulting in a long service life. Inexpensive ones have long been desired.

However, with respect to the provision of a base fabric for an ink ribbon which has been disclosed in the past, which has a high quality, a high productivity and a long life, the physical properties of the yarns constituting the base fabric are limited to a specific range. Does not disclose the invention which focuses on the weaving method and the manufacturing conditions per se. In the process of passing through the weaving process, the raw yarn constituting the woven fabric has a problem in that physical properties such as strength are reduced, and there is a problem that the characteristics imparted in the raw yarn manufacturing stage are not utilized and the intended effect is not sufficiently obtained. There was a problem that it was not possible to provide a woven fabric excellent in productivity sufficiently. Also, in the past, rapier looms and fly shuttle looms were often used for weaving the base fabric for ink ribbons.However, it was not possible to obtain a base fabric with high quality and high production efficiency suitable for the base fabric for ink ribbons, which was sufficiently satisfactory. It was not a thing. In addition, in rapier looms and fly shuttle looms, the weft insertion mechanism cannot increase the number of weft insertions, so not only is production efficiency low, but also in the insertion of wefts, in rapier looms, the insertion belt collides with the warp,
The warp may be damaged, causing fluff or breakage. Also in the fly shuttle loom, since the shuttle for inserting the weft causes the same poor weaving property as described above, there is a problem that the quality and productivity are extremely poor. Further, at present, fluff caused by damage to warp yarns in weaving adversely affects the printing life of the ink ribbon and causes a reduction in durability.

[0005]

SUMMARY OF THE INVENTION In view of the above-mentioned problems in the prior art, the present invention provides a method for producing a woven fabric for an ink ribbon which satisfies the weaving properties and productivity as a woven fabric for an ink ribbon and has an excellent printing life. A method and a base fabric for an ink ribbon are provided.

[0006]

The present invention employs the following means in order to solve the above-mentioned problems. That is, the method for producing a greige fabric for an ecru ribbon of the present invention is characterized in that, in the method for producing a greige fabric for an ecru ribbon made of polyamide multifilament yarn, weaving is performed on a loom that uses a high-pressure fluid system for inserting a weft. .

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION In the method for producing a greige fabric for an ink ribbon according to the present invention, a filament yarn made of nylon 66 is set on a warp and a warp is wound, and then the number of warps required for the fabric is beamed. After that, an acrylic paste is adhered to the yarn to form a weaving beam. At this time, various additives may be attached to improve the convergence of the yarn and improve the slip of the yarn. For example, a leveling agent or an oil agent may be used. This process is not a special method but a general process preparation process. The warp beam thus produced is passed through a heddle or a reed in the next warp threading step and set on a loom for weaving. However, it is not necessary to use a special method for the preparation step for weaving. Absent. The greige fabric is a fabric immediately after weaving without performing scouring and finishing set.

The present invention is characterized by a loom used for weaving, and is characterized by using a high-pressure fluid in a weft insertion method in weaving. Here, the high-pressure fluid means that water or air is made to have a high pressure, and the weft is caused to fly and the weft is inserted by using the fluid pressure. By using this method, at the time of weft insertion, the above-described rapier loom, or fluff or yarn breakage due to the collision of the warp of the belt or shuttle in the fly shuttle loom is eliminated, and weaving properties and quality can be improved. it can. Furthermore, the use of a high-pressure fluid dramatically increases the number of weft insertions, so that weaving efficiency can be improved.

[0009] The pressure of the high-pressure fluid of the present invention is preferably in the range of 4.5 to 295 Pascal, from the viewpoint of the effect. If such fluid pressure is less than 4.5 Pascal,
If the weft does not fly sufficiently and exceeds 295 pascals, a large tension is applied to the weft and excessive weaving shrinkage occurs, causing a problem that weaving cannot be performed. The number of weft insertions by the high-pressure fluid is preferably 500 times / minute or more, and more preferably 600 times / minute or more.
Good in terms of production efficiency. If it is less than 500 times / minute, the production amount per hour is small, and the production efficiency is poor, which is not preferable.

The present invention is characterized in that the high-pressure fluid employs a liquid or a gas. However, when the high-pressure fluid is a liquid, the fabric contains a large amount of moisture, so that mold is generated on the fabric. And there is a problem of becoming dirty. As a countermeasure, a high-pressure fluid may contain, as a fungicide, a drug mainly containing an oxidizing agent such as sodium hypochlorite. Since such a fungicide eliminates stains due to the generation of mold, the C repulsion is reduced, and a high quality product is obtained. In addition, by performing the drying treatment of the woven fabric by the suction method between the reed portion of the loom and the take-up roll, it is possible to further obtain a synergistic effect for preventing stains due to generation of mold.

In the weaving, the tension of the warp on the loom is:
It is preferably in the range of 0.33 to 0.45 centinewton / decitex. Since the opening of the warp sufficient for the weft to fly can be obtained, the loom due to fluff or yarn breakage due to the collision of the high pressure fluid with the warp. Because there is no loss due to the stop of
It is preferable in terms of production efficiency and quality.

The polyamide multifilament yarn used in the present invention preferably has a density of 33 to 60 dtex, and the cover factor of the woven fabric is preferably in the following range from the viewpoint of weaving, productivity and quality.

Cover factor- (CF) = woven fabric density × square root of decitex Cover factor in the length direction- (WCF) 870 ≦ WCF ≦ 1600 Cover factor in the width direction (FCF) 520 ≦ WCF ≦ 820 The crimp ratio of the woven yarn to be formed is preferably 3 to 7% in the length direction and 1 to 5% in the width direction, which is preferable for performing a scouring and finishing set in a post-process to obtain a uniform woven fabric.

As a loom for weaving the woven fabric, a water jet loom or an air jet loom is most suitable for producing the greige fabric for an ink ribbon of the present invention.

Further, the ink ribbon base fabric made from the greige fabric obtained by the production method of the present invention does not generate fluff due to the damage of the warp yarn during weaving, so that the printing durability when the ink ribbon is used is greatly improved. Be improved.

Nylon 46, Nylon 66, Nylon 6, Nylon 610, Nylon 11, Nylon 12, etc. are preferably used as the polyamide synthetic fiber filamentous yarn constituting the ink ribbon fabric of the present invention. The fineness of the yarn is preferably in the range of 22 to 110 decitex, and the fineness of the single yarn is 0.7 to 3.3.
Those in the range of decitex are preferred.

The content of titanium oxide contained in the yarn is preferably 0.15% by weight or less, and more preferably, no titanium oxide is contained. Good and excellent.

The relative viscosity of sulfuric acid of the polymer constituting the polyamide multifilament used in the present invention is as follows:
Preferably 2.4 to 3.8, more preferably 3.0 to 3.8.
3.5 is preferable in terms of durability when used as an ink ribbon.

The base fabric of the present invention can be used after being twisted at 50 to 400 T / m, but it is preferable not to twist the yarn from the viewpoint of cost reduction. Further, in the present invention, in the production stage of the raw yarn, 5 to 100 compressed air is used.
A confounding process of about 10 m / m can be performed.

As the fabric structure of the base fabric for the ink ribbon, a plain weave, a guided plain weave, a twill weave, a satin weave, a change structure thereof, and the like are used, but are not particularly limited thereto. The weaving density of such woven fabrics is
0 to 400 yarns / in, more preferably 140 to 300 yarns / in, and the weft is preferably 100 to 300 yarns / i.
n, more preferably about 110 to 200 pieces / in.

The greige fabric for ink ribbon thus obtained is subjected to ordinary scouring and finishing set after weaving. Preferably, scouring is performed by liquid scouring, and 16
It is preferable to finish set in the range of 0 ° C to 200 ° C. Thereafter, an appropriate amount of ink material such as ordinary oil-based ink is applied (impregnated) to the fabric and then fused to form an endless ink ribbon. The ink ribbon fabric of the present invention may have been subjected to appropriate post-processing such as high-pressure fluid processing, airflow processing, plasma processing, surfactant processing, and resin processing.

The ink ribbon constructed using the ink ribbon fabric of the present invention thus obtained can provide a high-quality ink ribbon fabric with high production efficiency and low cost.

[0023]

The present invention will be described below in detail with reference to examples.

The evaluation method used in the present invention is as follows. [Crimp rate] After cutting a greige fabric woven in accordance with JIS L1096 6.7.2 B method to a length of 30 cm in each of the warp and weft directions, the woven fabric is cut on the fabric in the warp and weft directions, respectively. Vermilion Marker 2
Providing a L ₁ of 0cm. After then has to decompose the yarn from the fabric obtains the length L ₂ extending yarn under a load of 1/10 per decitex of the yarn was determined crimp ratio by the following equation.

Crimp rate = [(L ₂ −L ₁ ) / L ₁ ] × 100 [Weaving property] From the start of weaving, the average value of the number of times the loom was stopped due to yarn breakage for 24 hours × 7 days was obtained. The number of stops was defined as the weaving property. The criteria are as follows.

Criteria 基準: No stop ○: 1 to 3 times Δ: 4 to 7 ×: 7 times or more [Productivity] Weaving woven fabric is inspected for defects in the fabric in the inspection process, and judged based on the degree of the defects. Was performed to determine the class A rate. The class A rate is a normal general woven fabric defect, and if there is no defect at all, it was regarded as class A. The standard is as follows.

：: 95% or more ○: 85 to 94% Δ: 75 to 84% ×: 74% or less [Base fabric durable] Base fabric for ink ribbon obtained by scouring and finishing setting of woven woven fabric Was cut to a width of 13 mm, cut to a length of 1 m with scissors, and an oil-based ink was applied to these base cloths at 22% of the weight of the base cloth to prepare an ink ribbon. Next, both ends were melt-bonded with an ultrasonic welder (M-8400 manufactured by Branson) to form an endless ink ribbon. This endless ink ribbon is attached to a 24-pin dot printer (UPS manufactured by Epson Corporation).
130K), the cassette was set in the printer, and letters and numbers were printed. The base fabric through which 24-pin dot pins penetrated was torn, and holes were damaged. The number of printed lines was read, and the average value was taken as the base fabric durability.

The evaluation criteria are as follows.

◎: 11000 lines or more ○: 8100 to 10000 lines Δ: 7100 to 8000 lines ×: 6000 to 7000 lines Example 1 Sulfuric acid relative viscosity 2.85, titanium oxide content 0.04
After performing a rough winding warp using a 55 decitex 34 filament yarn composed of 66% by weight nylon 66 polymer as a warp, the necessary number of warp yarns is beamed, and then an acrylic paste is adhered to the yarn to form a weaving bead. -A film was prepared. At this time, after the emulsifying oil was attached to the yarn, it was passed through a heddle and a reed in the next step and set on a loom.
A plain woven fabric was produced under weaving conditions, and the results of weaving, productivity, and base fabric durability were shown in Table 1 by the above-described determination method. Example 2 Sulfuric acid relative viscosity is 3.10, titanium oxide content is 0.04
After performing a rough winding warp using a 44 decitex 34 filament yarn made of nylon 66 polymer as a warp yarn, the necessary number of warp yarns for the woven fabric is beamed, and then an acrylic paste is adhered to the yarn to form a weaving bead. -A film was prepared. At this time, after the emulsifying oil was attached to the yarn, it was passed through a heddle and a reed in the next step and set on a loom.
A plain woven fabric was produced under weaving conditions, and the results of weaving, productivity, and base fabric durability were shown in Table 1 by the above-described determination method. Example 3 Sulfuric acid relative viscosity is 2.85 and titanium oxide content is 0.04
After performing a rough winding warp using a 44 decitex 34 filament yarn made of nylon 66 polymer as a warp yarn, the necessary number of warp yarns for the woven fabric is beamed, and then an acrylic paste is adhered to the yarn to form a weaving bead. -A film was prepared. At this time, after the emulsifying oil was attached to the yarn, it was passed through a heddle and a reed in the next step and set on a loom.
A plain woven fabric was produced under weaving conditions, and the results of weaving, productivity, and base fabric durability were shown in Table 1 by the above-described determination method. Example 4 Sulfuric acid relative viscosity is 2.85 and titanium oxide content is 0.04
After performing a rough winding warp using a 44 decitex 34 filament yarn made of nylon 66 polymer as a warp yarn, the necessary number of warp yarns for the woven fabric is beamed, and then an acrylic paste is adhered to the yarn to form a weaving bead. -A film was prepared. At this time, after the emulsifying oil was attached to the yarn, it was passed through a heddle and a reed in the next step and set on a loom.
A plain woven fabric was produced under weaving conditions, and the results of weaving, productivity, and base fabric durability were shown in Table 1 by the above-described determination method. Example 5 Sulfuric acid relative viscosity is 2.85 and titanium oxide content is 0.04
After performing a rough winding warp using a 55 decitex 34 filament yarn composed of 66% by weight nylon 66 polymer as a warp, the necessary number of warp yarns is beamed, and then an acrylic paste is adhered to the yarn to form a weaving bead. -A film was prepared. At this time, after the emulsifying oil was attached to the yarn, it was passed through a heddle and a reed in the next step and set on a loom.
A plain woven fabric was produced under weaving conditions, and the results of weaving, productivity, and base fabric durability were shown in Table 1 by the above-described determination method. Example 6 Sulfuric acid relative viscosity is 2.85 and titanium oxide content is 0.04
After performing a rough winding warp using a 44 decitex 34 filament yarn made of nylon 66 polymer as a warp yarn, the necessary number of warp yarns for the woven fabric is beamed, and then an acrylic paste is adhered to the yarn to form a weaving bead. -A film was prepared. At this time, after the emulsifying oil was attached to the yarn, it was passed through a heddle and a reed in the next step and set on a loom.
A plain woven fabric was produced under weaving conditions, and the results of weaving, productivity, and base fabric durability were shown in Table 1 by the above-described determination method. Example 7 Sulfuric acid relative viscosity is 2.85 and titanium oxide content is 0.04
After performing a rough winding warp using a 44 decitex 34 filament yarn made of nylon 66 polymer as a warp yarn, the necessary number of warp yarns for the woven fabric is beamed, and then an acrylic paste is adhered to the yarn to form a weaving bead. -A film was prepared. At this time, after the emulsifying oil was attached to the yarn, it was passed through a heddle and a reed in the next step and set on a loom.
A plain woven fabric was produced under weaving conditions, and the results of weaving, productivity, and base fabric durability were shown in Table 1 by the above-described determination method. COMPARATIVE EXAMPLE 1 After performing a warp winding process using a 44 decitex 34 filament yarn made of nylon 66 polymer having a sulfuric acid relative viscosity of 2.85 and a titanium oxide content of 1.0% by weight, the number of warp yarns required for the woven fabric was determined. After the trimming, an acrylic paste was adhered to the yarn to prepare a weaving beam. At this time, after the emulsifying oil was attached to the yarn, it was passed through a heddle and a reed in the next step and set on a loom.
A plain woven fabric was produced under weaving conditions, and the results of weaving, productivity, and base fabric durability were shown in Table 1 by the above-described determination method. Comparative Example 2 Sulfuric acid relative viscosity is 2.85, titanium oxide content is 0% by weight
After performing a rough warping with a 44 decitex 34 filament yarn made of nylon 66 polymer as a warp, the necessary number of warp yarns for the woven fabric is beamed, and an acrylic sizing agent is adhered to the yarn, thereby forming a beam for weaving. Was prepared. At this time, after the emulsifying oil agent was attached to the yarn, it was passed through a heddle and a reed in the next step and set on a loom, and a plain woven fabric was manufactured under the loom and weaving conditions shown in Table 1, and the above-described determination method was used. Table 1 shows the results of weaving, productivity, and base fabric durability. Comparative Example 3 Sulfuric acid relative viscosity was 2.85 and titanium oxide content was 0.04
After performing a rough winding warp using a 44 decitex 34 filament yarn made of nylon 66 polymer as a warp yarn, the necessary number of warp yarns for the woven fabric is beamed, and then an acrylic paste is adhered to the yarn to form a weaving bead. -A film was prepared. At this time, after the emulsifying oil was attached to the yarn, it was passed through a heddle and a reed in the next step and set on a loom.
A plain woven fabric was produced under weaving conditions, and the results of weaving, productivity, and base fabric durability were shown in Table 1 by the above-described determination method.

[0030]

[Table 1]

As is clear from Table 1, those of Examples 1 to 7 were superior to Comparative Examples 1 to 3 in terms of weaving, productivity and base fabric durability. In contrast, Comparative Examples 1 to
No. 3 was inferior in weaving, productivity and base fabric durability.

[0032]

According to the present invention, it is possible to stably and inexpensively provide a high quality greige fabric for an ink ribbon which has good weaving properties and productivity.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2C068 AA01 AA04 AA17 BB03 BB06 BC02 BD19 4L048 AA24 AA55 AB07 AB11 BA01 BA02 CA15 DA36 EA01 4L050 AA15 AA16 AB06 CA06 CB84

Claims (9)

[Claims] 1. A method for producing a greige fabric for an ink ribbon, comprising a polyamide multifilament yarn, wherein the weft is woven by a loom using a high-pressure fluid system. 2. The method for producing a greige fabric for an ink ribbon according to claim 1, wherein the pressure of the high-pressure fluid is 4.5 to 295 Pascal, and the number of weft insertions is 500 times / minute or more. 3. The method for producing a greige fabric for an ink ribbon according to claim 1, wherein the high-pressure fluid is a liquid, and the liquid contains an antifungal agent. 4. In the weaving, a winding roll is wound from a reed of the loom.
The method for producing a greige fabric for an ink ribbon according to any one of claims 1 to 3, wherein the greige fabric is subjected to a drying treatment between the woven fabrics. 5. In the weaving, the warp tension of the loom is set at 0.
The method for producing a greige fabric for an ink ribbon according to any one of claims 1 to 4, wherein the woven fabric is in a range of 33 to 0.45 centinewton / decitex. 6. The greige fabric is composed of a polyamide multifilament yarn of 33 to 60 decitex, and satisfies a cover factor (CF) value in a length direction and a width direction represented by the following formulas. A method for producing a greige fabric for an ink ribbon according to any one of claims 1 to 5. (Formula) Cover factor- (CF) = woven fabric density × square root of decitex Cover factor in the length direction- (WCF) 900 ≦ WCF ≦ 1900 Bar factor in the width direction (FCF) 700 ≦ FCF ≦ 1300 The woven fabric density is book / 2.
It shall be shown at 54 cm. 7. The crimping ratio of the yarn in the length direction of the woven yarn constituting the greige fabric in the range of 3 to 7% and the width in the width direction of 1 to 5%. A method for producing a greige fabric for an ink ribbon. 8. The method according to claim 1, wherein said loom is a water-jet loom or an air-jet loom. 9. An ink ribbon base fabric comprising the greige fabric according to claim 1.