JP3892925B2 - Manufacturing method of artificially contaminated cloth - Google Patents

Description

【００４８】
表１に示された結果から、実施例１で得られた人工汚染布は、比較例１〜２におけるように、従来の塩素系有機溶剤が用いられた人工汚染布と対比して、有機溶媒の残留量が少ないことがわかる。また、実施例１の方法によれば、洗浄時間が短くても、比較例１〜２の方法と同等の洗浄効果が発現されるので、乾燥効率が高いことがわかる。
【００４９】
【発明の効果】
本発明の製造方法によれば、塩素系有機溶剤を必要しないので、人体などに対する安全性に優れ、また乾燥効率が高く、製造時の時間を短縮化させて人工汚染布を製造することができるという優れた効果が奏される。
【図面の簡単な説明】
【図１】図１は、本発明の人工汚染布の製造方法の一実施態様を示す概略説明図である。
【符号の説明】
１ 布送り出しローラー
２ 試験布
３ 支持棒
４ 汚れ液
５ 汚染浴
６ 回転ブラシ
７ 絞りローラー
８ 乾燥室
９ 熱風吹き出し口
１０汚れ落とし室
１１回転ブラシ
１２引っ張りローラー
１３汚染布巻取りローラー[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing an artificially contaminated cloth. More specifically, the present invention relates to a method for producing an artificially contaminated cloth used in the development, evaluation, and cleaning research of a laundry detergent.
[0002]
[Prior art]
Artificial contaminated cloth is indispensable when developing, evaluating and cleaning research on detergents for clothing.
[0003]
Conventionally, many artificially contaminated cloths with various stains have been developed. Solvents used for such artificially contaminated cloths include, for example, chlorinated organic materials such as tetrachloroethylene (parklene) and carbon tetrachloride. Solvent is used.
[0004]
However, these chlorinated organic solvents are harmful to the human body and may cause wastewater pollution and air pollution.
[0005]
Therefore, development of an artificially contaminated cloth that does not require the chlorinated organic solvent is awaited.
[0006]
[Problems to be solved by the invention]
The present invention has been made in view of the prior art, and provides a method for manufacturing an artificially contaminated cloth that is excellent in safety to human bodies and the like, has high drying efficiency, and can shorten the time for manufacturing. For the purpose.
[0007]
[Means for Solving the Problems]
In the present invention, a soil solution having a boiling point of 90 ° C. or less and having a soil component dispersed or dissolved in a fluorine atom-containing organic solvent having no flash point and containing 1 to 70% by weight of the soil component is applied to a test cloth. The present invention relates to a method for manufacturing an artificially contaminated cloth characterized by being adhered.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
According to the production method of the present invention, a soil solution obtained by dispersing or dissolving a soil component in a fluorine atom-containing organic solvent having a boiling point of 90 ° C. or less and having no flash point is attached to a test cloth. , You can get an artificially contaminated cloth.
[0009]
Below, the manufacturing method of the artificial contamination cloth of this invention is demonstrated based on drawing.
[0010]
FIG. 1 is a schematic explanatory view showing one embodiment of the method for producing an artificially contaminated cloth of the present invention, but the present invention is not limited to such an embodiment.
[0011]
In FIG. 1, a test cloth 2 is wound around a cloth feed roller 1.
[0012]
For example, a brake device for controlling the traveling speed of the test cloth 2 such as a weight type may be attached to the cloth feed roller 1.
[0013]
The test cloth 2 only needs to be subjected to a soil test, and examples thereof include cloth used for clothing and the like. Examples of the fabric include natural fibers such as cotton, synthetic fibers such as polyester fibers, nylon fibers, and acrylic fibers.
[0014]
After running on the support rod 3, the test cloth 2 is immersed, for example, in a contaminated bath 5 in which the soil liquid 4 is poured at a constant speed.
[0015]
As described above, the soil liquid 4 is obtained by dispersing or dissolving a soil component in a fluorine atom-containing organic solvent having a boiling point of 90 ° C. or less and having no flash point.
[0016]
The present invention has one major feature in that a fluorine atom-containing organic solvent having a boiling point of 90 ° C. or less and having no flash point is used as the organic solvent.
[0017]
In the present invention, since the boiling point of the fluorine atom-containing organic solvent is 90 ° C. or less, the fluorine atom-containing organic solvent is almost completely dried even when a thick dough is used. Therefore, there is an advantage that workability is improved. In addition, since the fluorine-containing organic solvent has no flash point, it is excellent in safety against fires and explosions, and has an excellent property of having a very small effect on the human body as compared with a chlorinated organic solvent. Expressed.
[0018]
Representative examples of the fluorine-containing organic solvent having a boiling point of 90 ° C. or less and having no flash point include, for example, 1,1-dichloro-2,2,3,3,3-pentafluoropropane, 1,3 -Dichloro-1,1,2,2,3-pentafluoropropane and the like can be mentioned, and these can be used alone or in admixture of two or more. These compounds having a fluorine atom are excellent in safety to the human body, excellent in drying properties, and hardly remain in the resulting artificially contaminated cloth, and therefore can be suitably used in the present invention.
[0019]
Examples of the soil component include solid particle soil. As a representative example of such solid particle soil, for example, a powder material of inorganic soil such as crushed material of Kanuma Akadama is appropriate when soil at home is actually assumed.
[0020]
The stain solution 4 is obtained by adding and dispersing or dissolving the stain component in the fluorine atom-containing organic solvent having no flash point. At this time, in order to allow the dirt component to uniformly adhere to the test cloth 2 and to make it possible to easily confirm the cleaning effect, the concentration of the dirt component in the dirt liquid 4 depends on the type of the dirt component. However, it is usually preferably about 1 to 70% by weight.
[0021]
The dirt liquid 4 in the contamination bath 5 can be stirred by, for example, a rotating brush 6 or an air stirring device (not shown).
[0022]
The test cloth 2 immersed in the dirt liquid 4 is then brought into contact with the rotating brush 6 and rubbed with the test cloth 2 to be contaminated with dirt components contained in the dirt liquid 4. Examples of the rotating brush 6 include natural hairs such as animal hair, artificial hair brushes made of resin, and knitted woolen fabrics.
[0023]
Next, the contaminated test cloth 2 is guided to the squeeze roller 7. The dirt liquid 4 contained in the contaminated test cloth 2 is squeezed by the squeezing roller 7, and the dirt component is fixed on the test cloth 2. At this time, it is preferable that the running speed of the test cloth 2 is constant from the viewpoint that dirt is uniformly attached.
[0024]
After fixing the soil component, the test cloth 2 is introduced into the drying chamber 8. The drying chamber 8 shown in FIG. 1 is a hot air drying chamber, but the present invention is not limited by the type of the drying chamber 8. A hot air outlet 9 is provided below the drying chamber 8. The hot air discharged from the hot air outlet 9 can be generated by, for example, sending air conveyed from a blower into a heater and heating it with an electric heater or the like. The test cloth 2 is dried by the hot air thus discharged.
[0025]
Next, the dried test cloth 2 is introduced into the dirt removing chamber 10. In this dirt removal chamber 10, the test cloth 2 comes into contact with the rotating brush 11, and excess dirt components adhering to the test cloth 2 are removed. The rotating brush 11 may be the same as the rotating brush 6.
[0026]
The artificially contaminated cloth obtained by removing the excessive soil component adhering to the test cloth 2 is pulled by, for example, the pulling roller 12 and wound by the contaminated cloth winding roller 13 as necessary.
[0027]
As described above, in the present invention, the dirt liquid 4 is adhered to the test cloth 2 and, for example, the dirt component is adhered to the test cloth 2 by the rotating brush 6 or the like, and then dried, and the dirt component adhered excessively. In the case of adopting an operation of removing, for example, the rotating brush 11 or the like, there is an advantage that an artificially contaminated cloth that is realistic can be easily manufactured.
[0028]
Thus, the artificially contaminated cloth obtained by the production method of the present invention has excellent properties such as high drying efficiency and almost no residual solvent, as compared with the conventional method.
[0029]
Furthermore, according to the production method of the present invention, since the drying efficiency when producing artificially contaminated cloth is high, it is a case where a thick fabric closer to the practical clothes used for socks, trainers, underwear, etc. is used. However, there is an advantage that the fluorine atom-containing organic solvent can be dried almost completely without leaving the fluorine atom-containing organic solvent.
[0030]
【Example】
Next, the present invention will be described in more detail based on examples, but the present invention is not limited to such examples.
[0031]
Example 1
An artificially contaminated cloth manufacturing apparatus as shown in FIG. 1 was used.
[0032]
As the stain liquid 4, 1,1-dichloro-2,2,3,3,3-pentafluoropropane (boiling point: 51.1 ° C.) 45% by weight and 1,3-dichloro-1,1,2,2, Kanuma Akadama is added as solid particle soil to an organic solvent (boiling point: 54 ° C.) consisting of 55% by weight of 3-pentafluoropropane (boiling point: 65.1 ° C.), and the solid particle soil concentration is 12.0 g / l. A certain soil solution was used.
[0033]
As the test cloth 2, a cotton gold cloth 2003 (cotton plain weave or cotton knitted fabric) was used, immersed in the soil solution (liquid temperature: 20 ° C.) 4 at a running speed of 1.3 m / min, and contacted with the rotating brush 6. The both surfaces were contaminated with the dirt component contained in the dirt liquid 4 by rubbing and rubbing.
[0034]
Next, the contaminated test cloth 2 was guided to the squeezing roller 7, and the soil solution 4 contained in the test cloth 2 contaminated by the squeezing roller 7 was squeezed out.
[0035]
After fixing the soil components, the test cloth 2 was introduced into a hot air drying room (80 ° C.) 8 and dried for 1.7 minutes with a plain cotton weave and 1.5 minutes with a cotton knitted fabric.
[0036]
Next, the dried test cloth 2 is introduced into the dirt removing chamber 10. In this dirt removing chamber 10, the test cloth 2 is brought into contact with the rotating brush 11, and excess dirt components adhering to the test cloth 2 are removed. Dropped.
[0037]
The artificially contaminated cloth thus obtained was pulled by the pulling roller 12 and wound by the contaminated cloth winding roller 13.
[0038]
Next, when the reflectance of the obtained artificially contaminated cloth was measured with a colorimetric color difference meter (Nippon Denshoku Industries Co., Ltd., ND-300A, measurement wavelength: 460 nm), it was 46 ± 1%.
[0039]
Next, the characteristics of the obtained artificially contaminated cloth were examined according to the following method. The results are shown in Table 1.
[0040]
(1) Residual amount of solvent Test cloth (cotton plain weave) is cut into a size of 6 cm x 6 cm, and after immersing 5 samples in each organic solvent, the amount of organic solvent adhered is 0.11 g Adjusted. Next, it is allowed to stand at room temperature for 15 hours, and the residual amount of the organic solvent is expressed by the formula:
[Residual amount of organic solvent]
= [Weight of artificially contaminated cloth-Weight of test cloth-Weight of dirt components]
÷ [Weight of test cloth]
It was calculated according to
[0041]
In addition, the amount of adhesion of dirt components is the formula:
[Amount of dirt components]
= [Weight of artificially contaminated cloth-Weight of test cloth] ÷ [Weight of test cloth]
It was calculated according to
[0042]
(2) A detergent solution was obtained by dissolving 1.0 g of JISB detergent in 1000 ml of 20 ° C. hard water having a cleaning power of 4 ° DH (German hardness) or 8 ° DH (German hardness).
[0043]
5 pieces of artificially contaminated cloth with a size of 8 cm × 8 cm are immersed in this detergent solution at 20 ° C., washed with a targotometer (manufactured by Ueshima Seisakusho Co., Ltd.) at a rotation speed of 100 rpm for 10 minutes, and rinsed with running water. For 30 seconds.
[0044]
Next, the cleaning rate is expressed by the formula:
[Washing rate (%)]
= [Reflectance of artificially contaminated cloth after washing-Reflectance of artificially contaminated cloth before washing]
÷ [Reflectance of test cloth-reflectance of artificially contaminated cloth before washing]
× 100
It was calculated according to
[0045]
Comparative Examples 1-2
In Example 1, as a solvent, tetrachloroethylene (boiling point: 121 ° C.) (Comparative Example 1) or isoprene-based glycol ether (manufactured by Kuraray Co., Ltd., trade name: Fine Top J-410) 80% by weight and 20% by weight of water An aqueous solution (boiling point: 100-170 ° C.) (Comparative Example 2) is used, the running speed is 1.3 m / min (Comparative Example 1) or 0.8 m / min (Comparative Example 2), and the drying time is Comparative Example. 1 for 1.7 minutes for cotton plain weave, 2 minutes for cotton knitted fabric, 2.9 minutes for plain cotton weave in Comparative Example 2 and 4.6 minutes for cotton knitted fabric, artificially contaminated cloth as in Example 1. Got.
[0046]
The characteristics of the obtained artificially contaminated cloth were examined in the same manner as in Example 1. The results are shown in Table 1.
[0047]
[Table 1]

[0048]
From the results shown in Table 1, the artificially contaminated cloth obtained in Example 1 was compared with the artificially contaminated cloth using the conventional chlorinated organic solvent as in Comparative Examples 1 and 2, and the organic solvent. It can be seen that the residual amount of is small. Moreover, according to the method of Example 1, even if cleaning time is short, since the cleaning effect equivalent to the method of Comparative Examples 1-2 is expressed, it turns out that drying efficiency is high.
[0049]
【The invention's effect】
According to the production method of the present invention, since a chlorinated organic solvent is not required, it is excellent in safety for human bodies and the like, has high drying efficiency, and can produce an artificially contaminated cloth by shortening the production time. An excellent effect is achieved.
[Brief description of the drawings]
FIG. 1 is a schematic explanatory view showing an embodiment of a method for producing an artificially contaminated cloth according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cloth feed roller 2 Test cloth 3 Support stick 4 Dirt liquid 5 Contamination bath 6 Rotating brush 7 Drawing roller 8 Drying chamber 9 Hot air outlet 10 Dirt removing chamber 11 Rotating brush 12 Pulling roller 13 Contaminated cloth winding roller

Claims (4)

A soil component is dispersed or dissolved in a fluorine atom-containing organic solvent having a boiling point of 90 ° C. or less and has no flash point, and a soil solution containing 1 to 70% by weight of the soil component is adhered to the test cloth. A method for producing an artificially contaminated cloth. The method for producing an artificially contaminated cloth according to claim 1, wherein the stain liquid is attached to the test cloth and then dried to remove excessively attached dirt components. The fluorine atom-containing organic solvent is selected from the group consisting of 1,1-dichloro-2,2,3,3,3-pentafluoropropane and 1,3-dichloro-1,1,2,2,3-pentafluoropropane The method for producing an artificially contaminated cloth according to claim 1 or 2, wherein the artificially contaminated cloth is at least one kind. The method for producing an artificial soiled cloth according to any one of claims 1 to 3, wherein the soil component is solid particle soil.

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