JP2003291579A - Ball-point pen for writing on cloth - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ball-point pen for writing on a cloth which controls the bleeding of handwriting when used for writing on the cloth such as a fabric and a nonwoven fabric and is excellent in washing resistance. <P>SOLUTION: In the ball-point pen for writing on the cloth, an ink which contains at least a resin emulsion having the lowest film-making temperature of 25°C or below, pigment, and water and is 100-30,000 mPa.s (25°C) in viscosity and an ink backflow preventing material are packed directly in an ink housing tube fitted with the ball point of the ball-point pen at one end. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ballpoint pen of a type in which an ink container is directly filled with ink and a backflow preventer for the ink, and in particular, the bleeding resistance of handwriting when writing on a cloth such as a woven fabric or a non-woven fabric. The present invention also relates to a ballpoint pen for writing on cloth, which has excellent washing resistance.

[0002]

2. Description of the Related Art Conventionally, marking of fabrics and textile products,
As a writing instrument used for writing a name, an ink containing an oil-soluble dye, an oil-soluble resin, and a low-boiling point organic solvent as main components is filled, and the pen tip is a fiber core or plastic, and the ink is drawn by capillary force. An oil-based marker that is written by discharging the ink has been known.

[0003]

When writing on a cloth using the above-mentioned oily marker, the woven fabric and the non-woven fabric are not surface-treated to prevent bleeding unlike the general writing paper. When writing, the blurring of the handwriting became large, and it was practically impossible to write small characters. Furthermore, the handwriting obtained with the above marking pen is
When evaluated from the viewpoint of washing resistance, discoloration was confirmed and it was not satisfactory. It is an object of the present invention to provide a ballpoint pen for cloth writing, which reduces bleeding so that small characters can be written and has good washing resistance for handwriting.

[0004]

According to the present invention, an ink containing tube having a ballpoint pen tip attached to one end thereof contains at least a resin emulsion having a minimum film forming temperature of 25 ° C. or lower, a pigment and water, and has a viscosity of 100-30000 mPa · s
The gist is a ball-point pen for writing on cloth, which is obtained by directly filling ink (25 ° C.) and an ink backflow preventive.

The details will be described below. 1 and 2 show a ballpoint pen for cloth writing according to the present invention. The ballpoint pen nib 1 includes a ball 2 and a chip 3 that holds the ball. The ball 2 has a silicon carbide,
Tungsten Carbide, Carbide, etc. are used, and for the chip 3, metal such as ferritic stainless steel and nickel silver,
Abrasion resistant resins such as polyacetal and polybutylene terephthalate are used. The shape and the size of the ballpoint pen nib 1 may be one that is generally used in the related art, but in particular, the diameter of the ball is 0.7 to 1.4 m.
It is preferably m. If the ball diameter is smaller than this range, it is easy to get caught in the cloth and it becomes difficult to write the desired characters. If the ball diameter is larger than this range, the original purpose of writing small characters will not be satisfied. Furthermore, the caulking portion 4 continuous to the tip edge portion of the tip has a radius of 0.
Those formed with an R-shaped curved surface of 03 to 0.20 mm are preferably used. This is done by pressing the ball at the tip of the pen tip into contact with the cloth when writing on the cloth with a ballpoint pen. At this time, although the tip edge portion also comes into contact with the cloth together with the ball, it continues to the tip edge portion. This is because the caulking portion has an R-shaped curved surface so that the cloth is not scratched.

The ink containing tube 5 to which the tip of the ballpoint pen is attached is transparent so that the remaining amount of ink can be confirmed.
Alternatively, translucent polyethylene or polypropylene is used. Usually, the inner diameter of the ink containing tube 5 is about 2 to 6 mm, and its length is about 100 to 150 mm. If necessary, a silicone-based or fluorine-based water / oil repellent agent may be applied to the inside of the ink containing tube 5.
Ink I and an ink backflow preventer G, which will be described later, are directly filled in the ink containing tube 5.

The ink is handwriting, and contains at least a resin emulsion having a minimum film forming temperature of 25 ° C. or less, a pigment, and water, and has a viscosity of 100 to 30,000.
It is mPa · s (25 ° C.).

The resin emulsion having a minimum film-forming temperature of 25 ° C. or lower is used for fixing the handwriting to the cloth and especially for imparting washing resistance. A resin emulsion with a minimum film forming temperature of over 25 ° C cannot keep up with the deformation and cracks of the cloth during washing because the resin film is hard and brittle, and the density of the handwriting is reduced because the resin film is broken and detached. Is more likely to occur. Examples of the resin emulsion having a minimum film forming temperature of 25 ° C. or lower include Primal AC-22 (minimum film forming temperature: 8 ° C., solid content: 44.5% by weight) and AC-33.
(Minimum film formation temperature: 8 ° C, solid content: 46.5% by weight), AC-55 (minimum film formation temperature: 5 ° C, solid content: 50.0% by weight), AC-64 (minimum film formation) Temperature: 7 ° C, solid content:
60.5% by weight), the same AC-261 (minimum film forming temperature: 1
8 ° C, solid content: 50.0 wt%), AC-382 (minimum film forming temperature: 7 ° C, solid content: 50.0 wt%), AC
-388 (minimum film forming temperature: 8 ° C, solid content: 50.0% by weight), AC-417 (minimum film forming temperature: 20 ° C, solid content: 48.0% by weight), AC-490 (minimum) Film-forming temperature: 18 ° C, solid content: 46.0% by weight), AC-50
7 (minimum film forming temperature: 14 ° C., solid content: 46.5%), AC-630 (minimum film forming temperature: 17 ° C., solid content: 50.
0% by weight), the same AC-707 (minimum film forming temperature: 7 ° C, solid content: 65.0% by weight), the same AC-3444 (minimum film forming temperature: 12 ° C, solid content: 50.0% by weight) , EC-1
685 (minimum film forming temperature: 0 ° C or lower, solid content: 63.0% by weight), EC-1791 (minimum film forming temperature: 0 ° C or lower,
Solid content: 45.0% by weight), the same EC-1895 (minimum film forming temperature: 0 ° C. or lower, solid content: 61.0% by weight), the same EC
-2218 (minimum film forming temperature: 0 ° C. or lower, solid content: 58.
0 wt%), the same MV-1 (minimum film forming temperature: 8 ° C., solid content: 46.0 wt%), the same MV-9 (minimum film forming temperature: 1
0 ° C, solid content: 45.5% by weight, MV-17 (minimum film forming temperature: 8 to 12 ° C, solid content: 45.0% by weight), MV-23 (minimum film forming temperature: 8 ° C) , Solid content: 43.0% by weight, E-32 (minimum film forming temperature: 0 ° C. or lower, solid content: 46.0% by weight), E-358 (minimum film forming temperature:
8 ° C, solid content: 60.0% by weight, HA-8 (minimum film forming temperature: 0 ° C or lower, solid content: 45.5% by weight), HA
-12 (minimum film forming temperature: 5 ° C., solid content: 45.0% by weight), HA-24 (minimum film forming temperature: 0 ° C. or less, solid content: 44.5% by weight), the same K-3 ( Minimum film forming temperature: 0 ℃
Hereinafter, solid content: 46.0% by weight, K-87 (minimum film forming temperature: 0 ° C or lower, solid content: 46.0% by weight), TR
-520 (minimum film forming temperature: 0 ° C. or lower, solid content: 50.0
% By weight), the same TR-934HS (minimum film forming temperature: 0 ° C. or lower, solid content: 47.5% by weight), experimental emulsion E-1345 (minimum film forming temperature: 0 ° C. or lower, solid content: 45. 5% by weight) (above, manufactured by Rohm and Haas Japan Co., Ltd.), an acrylic resin emulsion, Sebian-A 146 (minimum film forming temperature: 20 ° C., solid content: 50% by weight), 150 (minimum) Film forming temperature: 17
° C, solid content: 55% by weight (above, Daicel Corporation)
Manufactured), Polysol PS-19 (minimum film forming temperature: 0 ° C., solid content: 50% by weight), PS-3HA (minimum film forming temperature: minimum film forming temperature:
1-3 ° C., solid content: 50 ± 2% by weight (above, Showa Highpolymer Co., Ltd.) vinyl acetate resin emulsion, Polysol PS-120 (minimum film forming temperature: 3-5 ° C., solid content: 49.5 ± 1.5 wt%) and 747 L (minimum film forming temperature: 0 ° C., solid content: 50 wt%) (above, Showa Highpolymer Co., Ltd.) and other vinyl acetate-acrylic copolymer resins Emulsion, Polyzole AP-2678 (minimum film forming temperature: 20 ° C., solid content: 49% by weight), AP-2679
(Minimum film forming temperature: 22 ° C, solid content: 49% by weight), A
P-2694 (minimum film forming temperature: 9 ° C, solid content: 45% by weight), AP-2697 (minimum film forming temperature: 0 ° C, solid content:
41% by weight) (above, Showa Highpolymer Co., Ltd.) and other styrene-acrylic copolymer resin emulsions, Polysol EVA. P-3 (minimum film forming temperature: 0 ° C., solid content: 50 ±
2% by weight), the same P-10 (minimum film forming temperature: 0 ° C., solid content: 50% by weight) (above, manufactured by Showa Highpolymer Co., Ltd.) and the like, and an ethylene / vinyl acetate resin emulsion. The amount of the resin emulsion used is preferably 3 to 30% by weight based on the total amount of the ink in terms of solid content. If the amount is small, sufficient effect cannot be obtained.

The pigment is used as a colorant,
Conventionally known pigments can be used. As a specific example, Spec
ial Black 6, same S170, same S610, same 5, same 4, same 4A, same 550, same 35, same 250, same 1
00, Printex 150T, same U, same V, same 14
0U, 140V, 95, 90, 85, 80,
Same 75, Same 55, Same 45, Same P, Same XE2, Same L6, Same L, Same 300, Same 30, Same 3, 35, Same 25, Same 20
0, the same A, the same G (all manufactured by Degussa Japan Ltd.),
# 2400B, # 2350, # 2300, # 2200
B, # 1000, # 950, # 900, # 850, #M
CF88, MA600, MA100, MA7, MA1
1, # 50, # 52, # 45, # 44, # 40, # 3
3, # 32, # 30, CF9, # 20B, # 4000
B, (Made by Mitsubishi Kasei Kogyo Co., Ltd.), MONARCH
1300, 100, 1000, 900, 88
0, 800, 700, MOGUL L, REGAL
400R, 660R, 500R, 330R, 300R, 99R, ELFTEX 8, 12 and BL
ACK PEARLS 2000 (above, Cabot Corp., USA), Raven 7000, 575
0, 5250, 5000, 3500, 200
0, same 1500, same 1255, same 1250, same 120
0, 1170, 1060, 1040, 103
5, 1020, 1000, 890H, 890,
850, 790, 780, 760, 500,
Same 450, same 430, same 420, same 410, same 22, same 16, same 14, same 825 oil Beads, same H2
Carbon blacks such as 0, C, Conductex 975, 900, SC (above, Columbian Carbon Japan Co., Ltd.), KA-10, 10P, 1
5, the same 20, the same 30, the same 35, the same 60, the same 80, the same 9
0, KR-310, 380, 460, 480 (above, manufactured by Titanium Industry Co., Ltd.), P25 (manufactured by Nippon Aerosil Co., Ltd.) and the like, BS-605, 607.
(Above, manufactured by Toyo Aluminum Co., Ltd.), bronze powder P-
555 and P-777 (Nakajima Metal Foil Industry Co., Ltd.)
Powder), bronze powder 3L5, 3L7 (above, manufactured by Fukuda Metal Foil Industry Co., Ltd.), etc., as well as black iron oxide, yellow iron oxide, red iron oxide, ultramarine blue, navy blue, cobalt blue, chrome green. , Inorganic pigments such as chromium oxide,
Hansa Yellow-10G, 5G, 3G, 4 and G
R, same A, benzidine yellow, permanent yellow NC
G, Tartrazine Lake, Quinoline Yellow, Sudan 1, Permanent Orange, Induslen Brilliant Orange GN, Permanent Brown FG, Para Brown, Permanent Red 4R, Fire Red, Brilliant Carmine BS, Pyrazolone Red, Lake Red C, Quinacridone Red, Brilliant. Carmin 6
B, Bordeaux 5B, thioindigo red, fast violet B, dioxazine violet, alkali blue lake, phthalocyanine blue, indigo, acid green lake, phthalocyanine green and the like organic pigments. In addition to these, inorganic fluorescent pigments such as zinc sulfide, zinc silicate, zinc cadmium sulfate, calcium sulfide, strontium sulfide, and calcium tungstate can be cited. It is also possible to use an aqueous ink base of a dispersed pigment in which the pigment is dispersed in an aqueous medium. Specifically, Fuji SP Black 8031 and 81
19, ibid 8167, ibid 8276, ibid 8381, ibid 840
6, Fuji SP RED 5096, 5111,
5193, 5220, 5543, 5544, F
uji SP Bordeaux 5500, Fuji
SP Blue 6062, 6133, 613
4 and 6401, Fuji SP Green 705
1, Fuji SP Yellow 4060, 41
78, Fuji SPViolet 9011, Fuj
i SP Pink 9524 and 9527, Fuji
SP Orange 534, Fuji SP Br
own 3074 (above, Fuji dye Co., Ltd. product), Ema
col Black CN, Emacol Blue
FBB, FB, KR, and Emacol Green
LXB, Emacol Violet BL, Emac
ol Brown 3101, Emacol Carm
mine FB, Emacol RED BS, Ema
col Orange R, Emacol Yello
w FD, same IRN, same 3601, same FGN, same GN,
Same GG, same F5G, same F7G, same 10GN, same 10G
N, Sandye Super Black K, Same C, Sandye Super Gray B, San
Dye Super Brown SB, FRL, RR, Sandy Super Navy Blue
HRL, GLL, HB, FBL-H, FBL
-160, same FBB, Sandye Super Vi
olet BL H / C, same BL, same BLN, Sand
ye Super Bordeaux FR, Sand
ye Super Pink FBL, same F5B, Sa
ndye Super Rubine FR, Sand
ye Super Carmine FB, Sandy
e Super Red FFG, RR, BS, Sa
ndye Super Orange FL, same R, same BO, Sandy Gold Yellow 5G
R, same R, same 3R, Sandye Yellow G
G, same F3R, same IRC, same FGN, same GN, same GR
S, same GSR-130, same GSN-130, same GSN,
10 GN (above, Sanyo Pigment Co., Ltd.), Rio Fa
st Black Fx 8012, 813, 8
169, Rio Fast Red Fx 8209,
8172, Rio Fast Red S Fx 8
315, 8316, Rio Fast Blue F
x 8170, Rio Fast Blue Fx 8
170, Rio Fast Blue S Fx 83
12, Rio Fast Green S Fx 83
14 (above, manufactured by Toyo Ink Co., Ltd.), NKW-210
1, 2102, 2103, 2104, 210
5, 2106, 2107, 2108, 211
7, 2127, 2137, 2167, 2101
P, same 2102P, same 2103P, same 2104P, same 2
105P, 2106P, 2107P, 2108
P, same 2117P, same 2127P, same 2137P, same 2
167P, NKW-3002, 3003, 300
4, same 3005, same 3007, same 3077, same 300
8, same 3402, same 3404, same 3405, same 340
7, ibid 3408, ibid 3477, ibid 3602, ibid 360
3, 3604, 3605, 3607, 367
7, 3608, 3702, 3703, 370
4, ibid 3705, ibid 3777, ibid 3708, ibid 601
3, 6038 and 6559 (Nippon Fluorescent Co., Ltd.)
Made), Cosmocolor S 1000F series (made by Toyo Soda Co., Ltd.), Victoria Yellow G-11, G-2
0, Victoria Orange G-16, the same G-21, Victoria Red G-19, the same G-22, Victoria Pink G-17, the same G-23, Victoria Green G-
18, the same G-24, Victoria Blue G-15, the same G
-25 (above, manufactured by Mikuni Pigment Co., Ltd.), Pollux Blue PC5T-1020, Pollux Black PC8T
-135, POLUX RED IT-1030 and other Pollux series (above, manufactured by Sumika Color Co., Ltd.) and the like can be mentioned, and these can be used alone or in combination of two or more.

Various water-soluble organic solvents can be used in addition to water, which is essential as a solvent or dispersion medium, and these have various qualities as an aqueous ink, for example, ink drying prevention with a pen tip, and low temperature It is used for the purpose of preventing ink freeze and pigment dispersion medium. Specifically, glycols such as ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, 1,3-butylene glycol, dipropylene glycol, tripropylene glycol, polyethylene glycol, thiodiethylene glycol, hexylene glycol, tetralin, and glycerin. , Ethylene glycol monomethyl ether, propylene glycol monomethyl ether, diethylene glycol monomethyl ether, dipropylene glycol monomethyl ether, ethylene glycol monoethyl ether, propylene glycol monoethyl ether, diethylene glycol monoethyl ether, dipropylene glycol monoethyl ether, ethylene glycol monobutyl ether, Propylene glycol Over mono butyl ether, diethylene glycol monobutyl ether, dipropylene glycol monobutyl ether,
Triethylene glycol monomethyl ether, tripropylene glycol monomethyl ether, triethylene glycol monoethyl ether, tripropylene glycol monoethyl ether, triethylene glycol monobutyl ether, tripropylene glycol monobutyl ether, ethylene glycol monomethyl ether acetate, dipropylene glycol monomethyl ether acetate , Ethers such as ethylene glycol monophenyl ether and propylene glycol monophenyl ether, alcohols such as benzyl alcohol, methanol, ethanol, propanol, isopropanol and butanol, N-methyl-2-pyrrolidone and 2-pyrrolidone can be used, These can be used alone or in combination of two or more. A.

The viscosity of this ink is 100 to 30,000 mP.
It is necessary to be a · s (25 ° C.). Viscosity 10
If it is less than 0 mPa · s, there is a problem that blurring of handwriting when writing on a cloth such as a woven fabric or a non-woven fabric becomes large. There is a problem that writing cannot be done as a result because it is not in time. In order to adjust the viscosity of the ink to 100 to 30,000 mPa · s (25 ° C.), polyvinyl alcohol, polyvinyl methyl ether, sodium polyacrylate, if necessary,
Carboxyvinyl polymer, polyethylene oxide,
Copolymer of vinyl acetate and vinylpyrrolidone, alkali metal salt of acrylic resin, copolymer of acrylic acid and alkyl methacrylate, inorganic mineral-based hectorite, bentonite, smectite, montmorillonite, natural gum arabic, tragacanth gum, xanthan gum, Uses guar gum, locust bean gum, alginic acid, carrageenan, gelatin, casein, dextran, semi-synthetic methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose, sodium starch glycolate, sodium alginate, propylene glycol alginate, and their derivatives. can do.

In addition, various additives such as antiseptics, antifungal agents, rust preventives, defoamers and dispersants can be appropriately used alone or in combination depending on the purpose and need.

In producing the ink of the present invention, various conventionally known methods can be adopted. For example, it can be easily obtained by mixing and dispersing with a stirrer such as a turbo mixer or a disperser such as a ball mill, a sand grinder, a speed line mill or a roll mill.

The ink backflow preventive is used for preventing ink leakage, backflow, and drying, is not easily soluble in water or water-soluble organic solvent in the ink, and has a non-volatile property of preventing ink permeation. It is composed of a base material which is a volatile substance or a hardly volatile substance. Examples of the base material which is a non-volatile substance or a hardly volatile substance include polybutene, liquid paraffin, spindle oil, chlorinated paraffin, α-olefin oligomer, ethylene α-olefin and silicone oil. The viscosity of the ink backflow preventer is 1000
0-200000 mPa · s (E type viscometer, ST rotor, 1 rpm, shear rate 0.35 (1 / s), 25 ° C)
Is preferred. When the base material alone has a low viscosity, it is necessary to use a thickener or a gelling agent together to adjust the viscosity. Thickeners and gelling agents include fine particle silica such as Aerosil (manufactured by Nippon Aerosil Co., Ltd.), hydrogenated castor oil-based one such as DISPARLON 305 (manufactured by Kusumoto Kasei Co., Ltd.), and soroid (Sansho Co., Ltd.). Cellulosic materials such as those manufactured by K.K.), dextrin-based materials such as Leopard (manufactured by Chiba Flour Milling Co., Ltd.), metal soaps and bentonite.

[0015]

The ink of the ball-point pen for cloth writing of the present invention uses a resin emulsion having a minimum film forming temperature of 25 ° C. or lower,
Since this resin emulsion forms a flexible and adhesive resin film, it can follow the deformation and cracks of the cloth during washing, the resin film is less likely to be broken or detached, and the concentration of handwriting is less likely to decrease. Become. Further, by increasing the viscosity of the ink to 100 to 30,000 mPa · s (25 ° C.), it is possible to obtain handwriting with less bleeding when writing on cloth.

[0016]

EXAMPLES The present invention will be described in more detail below with reference to examples. The above components were mixed by stirring to obtain a red cloth writing pen. The viscosity of this ink is 680 mPa · s (25
℃).

[0017] The above components were mixed by stirring to obtain a ballpoint pen ink for green cloth writing. The viscosity of this ink is 240 mPa · s (25
℃).

[0018] The above components were mixed with stirring to obtain a black ballpoint pen ink for writing on cloth. The viscosity of this ink is 18,000 mPa · s (2
5 ° C.).

[0019] The above components were mixed by stirring to obtain a yellow cloth writing pen. The viscosity of this ink is 3000 mPa · s (25
℃).

[0020] The above components were mixed by stirring to obtain a red cloth writing pen. The viscosity of this ink is 550 mPa · s (25
℃).

[0021] The above components were mixed with stirring to obtain a black ballpoint pen ink for writing on cloth. The viscosity of this ink is 21,000 mPa · s (2
5 ° C.).

[0022] The above components were mixed with stirring to obtain a black ballpoint pen ink for writing on cloth. The viscosity of this ink is 16000 mPa · s (2
5 ° C.).

Ink Formulation Example 8 A black ink was obtained in the same manner as Ink Formulation 1, except that Kelzan AR was removed and ion exchanged water was added in the same amount as in Ink Formulation Example 3. The viscosity of this ink is 10 mPa
-It was s (25 degreeC).

Ink Formulation Example 9 In the Ink Formulation Example 3, polysol EVA. P-10
Except that the same amount of ion-exchanged water was added, and a black ink was obtained in the same manner as Ink 1. The viscosity of this ink was 14000 mPa · s (25 ° C.).

Ink Formulation Example 10 In Ink 1, instead of Primal HA-8, Primal WL-81 (minimum film forming temperature 57 ° C., solid content 41.
A red ink was obtained in the same manner as Ink 1 except that 5%, an acrylic resin emulsion, and Rohm and Haas Japan Co., Ltd. were added. The viscosity of this ink is 65
It was 0 mPa · s (25 ° C.).

[0026] The above components were mixed and stirred to obtain an ink backflow preventer.

Ballpoint pen Nib 1 Radius of the caulking part that is continuous with the leading edge is 0.05 m
An R-shaped curved tip of m and a ball made of tungsten carbide having a diameter of 0.7 mm were used.

Ballpoint pen nib 2 The radius of the caulking portion continuing from the leading edge portion is 0.15 m.
A chip having an R-shaped curved surface of m and a ball made of silicon carbide having a diameter of 0.7 mm was used.

Ball-point pen nib 3 A tip made of a tungsten carbide ball having a diameter of 0.7 mm and a tip which does not have an R-shaped curved surface, which is continuous with the leading edge portion, was used.

Ballpoint pen nib 4 The caulking part that is continuous with the leading edge part has a radius of 0.05 m.
A chip having an R-shaped curved surface of m and a ball made of tungsten carbide having a diameter of 1.0 mm was used.

Ballpoint pen nib 5 Radius of the caulking portion continuing from the leading edge portion is 0.05 m
A chip made of m-shaped curved surface and a ball made of tungsten carbide having a diameter of 0.5 mm was used.

A transparent polypropylene cylinder having an ink containing tube inner diameter of 3.0 mm and a length of 125 mm was used.

Examples 1 to 11 and Comparative Examples 1 to 4 were produced in the combinations shown in Table 1. In addition, Examples 1 to 11 and Comparative Example 1
In producing the ball-point pens (4) to (4), 0.8 g of each ink was filled in the ink containing tube, and 0.1 g of the above ink backflow preventive was further filled on the ink, followed by centrifugation.

[0034]

[Table 1]

Examples 1 to 11 and Comparative Example 1 obtained above
~ 4 using cotton broad (65% cotton, 3 polyester
5%) A test piece was prepared by writing letters on the cloth. A bleeding test and a wash resistance test were performed on these test pieces. At the same time, the writing smoothness when writing on cotton broad was evaluated. The results are shown in Table 2.

[0036]

[Table 2]

Bleeding test: The handwriting of the test piece was visually evaluated according to the following criteria. (Evaluation Criteria) 5: No bleeding 4: Slight bleeding 3: Bleeding 2: Large bleeding 1: Very large bleeding

Washing resistance test: A test piece was washed with a washing machine containing household laundry detergent (Kao Corporation: Attack) for 30 minutes.
It was washed for 30 minutes, rinsed for 30 minutes, naturally dried, and the handwriting was visually evaluated according to the following criteria. (Evaluation criteria) 5: No color fading at all 4: Color fading slightly 3: Color fading 2: Fair color fading 1: Almost color fading

Smoothness of writing: The degree of catching on a cotton broad cloth during writing was evaluated according to the following criteria. (Evaluation criteria) ◎: No catch at all ○: Very slight catch △: Slightly catch ×: Very catch

In Comparative Example 4, when the ball-point pen was left unattended, the water content in the ink was evaporated and reduced, and the ink thickened, and writing became impossible.

[0041]

As described above in detail, the ballpoint pen for cloth writing according to the present invention has little bleeding of handwriting when written on cloth such as woven fabric and non-woven fabric, and has excellent washing resistance.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an example of a ballpoint pen for writing on cloth.

FIG. 2 is an enlarged view of a main part of FIG.

[Explanation of symbols]

1 ballpoint pen nib Two balls 3 chips 4 Caulking part 5 Ink storage tube I ink G ink backflow preventer

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2C350 GA03 HA08 KC02 KC03 KC04                       KF03 NA10 NA11 NC20                 4J039 AD01 AD03 AD08 AD10 BE01                       CA06 EA40 EA47 FA03 GA27

Claims (4)

[Claims] 1. An ink containing tube having a ballpoint pen tip attached to one end thereof contains at least a resin emulsion having a minimum film forming temperature of 25 ° C. or less, a pigment, and water, and has a viscosity of 10.
A ballpoint pen for writing on cloth, which is directly filled with ink of 0 to 30000 mPa · s (25 ° C) and an ink backflow preventive. 2. The resin emulsion is an acrylic resin,
Vinyl acetate resin, vinyl acetate / acrylic copolymer resin,
The ball-point pen for cloth writing according to claim 1, comprising one or more selected from emulsions of styrene / acrylic copolymer resin and ethylene / vinyl acetate resin. 3. The ball-point pen for cloth writing according to claim 1, wherein the ball-point pen nib has a diameter of a ball included therein of 0.7 to 1.4 mm. 4. The ball-point pen nib has a radius of 0.03 to a caulking portion which is continuous with the tip edge portion of the tip.
The ball-point pen for cloth writing according to any one of claims 1 to 3, which is formed of an R-shaped curved surface of 0.20 mm.