JPH0715379U - Writing instruments for infants - Google Patents

Abstract

(57) [Summary] [Structure] Synthetic edible or natural dyes for foods as ink components, propylene glycol, glycerin, sorbitol, etc. as wetting agents, sucrose ester, sanipone, sorbitan fatty acid ester as surfactants. , Glycerin fatty acid ester, preservatives / preservatives such as sodium benzoate, sodium propionate, potassium sorbate, thiabendazole, etc., and pen core 2 made of acrylic / polyester fiber and medical nylon, vinylon, etc. A writing instrument for infants characterized by using urethane resin, shellac resin, and carnauba wax-free resin having residual formaldehyde as a curing agent at the time of molding. [Effect] It is possible to provide a writing tool that is safe even if an infant licks the pen core 2 and bites it, and can write smoothly with a light touch.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pen-type writing instrument of a fiber type called a felt pen.

[0002]

[Prior art]

 Conventionally, there is a fiber core as a writing instrument for infants that can be used easily and easily. In recent years, many applications and inventions have been filed for this writing instrument for infants, for example, in which an airflow passage is provided in a cap portion so that a cap can be swallowed even if the cap is swallowed. In addition, there is an application for a water-based ink that is safe even if the ink itself in the refilling ink or the liquid writing instrument is accidentally swallowed. Next, when such a safe ink is impregnated into the absorber of the writing instrument, there is no particular problem because the absorber uses polyester, acrylic fiber or the like as it is. However, the pen core is hardened with a thermosetting resin or the like in order to withstand writing pressure and a frictional force against a writing object such as paper and prevent the pen core from becoming blunt. Such a cured resin is a melamine resin, a urea resin, or the like, and a resin in which formaldehyde remains is often used. It goes without saying that formaldehyde is harmful. Therefore, even if safe ink is found at all, when the ink comes out of the pen core, the formaldehyde described above also elutes, and when the infant licks it or when the infant bites the pen core, etc., together with the resin of the pen core, Residual formaldehyde will enter the body. Furthermore, since it is a writing instrument for infants, it is necessary to use the above ink and write smoothly with a light touch.

[0003]

[Problems to be Solved by the Invention] Therefore, the present invention is a writing instrument that eliminates the elution of ink and harmful curable resin etc. of the pen core, and is safe even if the infant licks the pen core, and even if the infant bites it. It is an object of the present invention to provide a writing instrument for infants, which is extremely safe and prevents the invasion of hardeners that leave harmful substances into the body, and which can write smoothly with a safe ink together with a light touch.

[0004]

[Means for Solving the Problems]

 Synthetic food colors or natural dyes for food as ink components, propylene glycol, glycerin, sorbitol, etc. as wetting agents, sucrose ester, sanipone, sorbitan fatty acid ester, glycerin fatty acid ester, preservation as surfactants When using sodium benzoate, sodium propionate, potassium sorbate, thiabendazole, etc. as the preservative and preservative, and the acrylic / polyester fiber and medical nylon, vinylon etc. A writing instrument for infants characterized by using urethane resin, shellac resin, and carnauba wax-free formaldehyde resin as a curing agent.

[0005]

【Example】

 The present invention will be described in detail. Reference numeral 1 is an absorber having a safe ink impregnated therein. Regarding the ink impregnated inside, the synthetic food dyes for food will be described first. Food Red No. 3, No. 3, 102, No. 104, No. 105, No. 106, Food Yellow No. 4, No. 5, Food Blue No. 1, No. 2, Food Green No. 3 may be used alone or in combination. I can. In addition, turmeric pigment, gardenia yellow pigment, safflower yellow pigment, annatto pigment, publica pigment, cochineal pigment, lac pigment, beet red pigment, perilla pigment, perry pigment, chlorophyll pigment, beta-carotene, etc. as necessary Use one type or several types as appropriate. Propylene glycol, glycerin, sorbitol, etc. are used as wetting agents. As the surfactant, sucrose ester, saponin, sorbitan fatty acid ester, monoglycerin fatty acid ester, polyglycerin fatty acid ester and the like are used.

As preservatives / preservatives, sodium benzoate, sodium propionate, potassium sorbate, thiabendazole and the like are used. The ink composition is shown below, and% is% by weight.

Example 1 Water 65.6% Glycerin 13.1% Propylene glycol 13.1% Sucrose fatty acid ester 0.1% Potassium sorbate 3.6% Red No. 2 4.5%

Example 2 Water 50.0% Glycerin 15.0% Sorbitol 10.0% Glycerin fatty acid ester 0.2% Sodium benzoate 5.0% Gardenia green pigment 3.8% Red 102 No. 6.0%

Example 3 Water 60.0% Glycerin 13.0% Propylene glycol 19.0% Potassium sorbate 0.2% Sorbitan fatty acid ester 4.0% Red No. 104 2.8% Yellow No. 5 1.0 %

Reference numeral 2 denotes a pen core made of acrylic fiber, polyester fiber, medical nylon, vinylon and the like. Also, unlike the brush for a writing brush, the pen core 2 needs to prevent the pen core 2 from being brushed so that the pen core 2 can be written out for a long time during writing. For this purpose, the pen core 2 is hardened with a resin, but at this time, a resin in which residual formaldehyde does not remain in the resin, urethane resin, shellac resin, or carnauba wax is used. Furthermore, the pen core 2 may be a sintered pen core that does not use a resin as the raw material. It is a writing instrument for infants in which such a pen core 2 is used and the ink as in the above-mentioned embodiment is used so that the pen core 2 can be licked or chewed. Also, the ink viscosity is 5.0 cps or less, and since the above-mentioned resin that does not leave a lubricant and residual formaldehyde in the ink is used, writing can be performed smoothly.

[0011]

【effect】

 With the above-described structure, a safe writing tool can be provided even if an infant licks the pen core 2 and bites it, and can write smoothly with a light touch.

[0012]

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

[0010]

[Explanation of symbols]

 1 Absorber 2 Pen core

Claims (1)

[Scope of utility model registration request] 1. A synthetic food dye or natural dye for food as an ink component, a water-soluble solvent, propylene glycol, glycerin, sorbitol, etc. as a wetting agent, and sucrose ester, sanipone, sorbitan fatty acid ester, glycerin fatty acid ester as a surfactant. , Using sodium benzoate, sodium propionate, potassium sorbate, thiabendazole, etc. as preservatives and preservatives, and curing acrylic / polyester and medical nylon, vinylon, etc. as the pen core 2 when molding the pen core A writing instrument for infants characterized by using urethane resin, shellac resin, and carnauba wax-free residual formaldehyde resin as an agent.