JP2010013560A - Method of washing - Google Patents
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- JP2010013560A JP2010013560A JP2008174848A JP2008174848A JP2010013560A JP 2010013560 A JP2010013560 A JP 2010013560A JP 2008174848 A JP2008174848 A JP 2008174848A JP 2008174848 A JP2008174848 A JP 2008174848A JP 2010013560 A JP2010013560 A JP 2010013560A
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- washing
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- washed
- rinsing
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- 238000005406 washing Methods 0.000 title claims abstract description 136
- 238000000034 method Methods 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 67
- 150000004967 organic peroxy acids Chemical class 0.000 claims abstract description 29
- 239000003599 detergent Substances 0.000 claims abstract description 21
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 claims description 38
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 28
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 15
- 238000002360 preparation method Methods 0.000 claims description 11
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 239000004753 textile Substances 0.000 claims description 3
- 150000004965 peroxy acids Chemical class 0.000 claims 1
- 230000001954 sterilising effect Effects 0.000 abstract description 7
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 7
- 230000002265 prevention Effects 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 19
- 241000193755 Bacillus cereus Species 0.000 description 12
- SCKXCAADGDQQCS-UHFFFAOYSA-N Performic acid Chemical compound OOC=O SCKXCAADGDQQCS-UHFFFAOYSA-N 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- -1 builders Substances 0.000 description 8
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 8
- 125000004432 carbon atom Chemical group C* 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000003513 alkali Substances 0.000 description 5
- 230000000844 anti-bacterial effect Effects 0.000 description 5
- 239000004744 fabric Substances 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 239000003945 anionic surfactant Substances 0.000 description 4
- 235000014113 dietary fatty acids Nutrition 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 239000000194 fatty acid Substances 0.000 description 4
- 229930195729 fatty acid Natural products 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000002736 nonionic surfactant Substances 0.000 description 4
- 239000000344 soap Substances 0.000 description 4
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 3
- 235000013539 calcium stearate Nutrition 0.000 description 3
- 239000008116 calcium stearate Substances 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 230000003405 preventing effect Effects 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 150000005215 alkyl ethers Chemical class 0.000 description 2
- 230000001332 colony forming effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 235000017550 sodium carbonate Nutrition 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- LJGHYPLBDBRCRZ-UHFFFAOYSA-N 3-(3-aminophenyl)sulfonylaniline Chemical compound NC1=CC=CC(S(=O)(=O)C=2C=C(N)C=CC=2)=C1 LJGHYPLBDBRCRZ-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical class OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241001660259 Cereus <cactus> Species 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 241001125020 Geomys bursarius Species 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical class OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 229910000288 alkali metal carbonate Inorganic materials 0.000 description 1
- 150000008041 alkali metal carbonates Chemical class 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 229910052910 alkali metal silicate Inorganic materials 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011538 cleaning material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- XPPKVPWEQAFLFU-UHFFFAOYSA-J diphosphate(4-) Chemical compound [O-]P([O-])(=O)OP([O-])([O-])=O XPPKVPWEQAFLFU-UHFFFAOYSA-J 0.000 description 1
- 235000011180 diphosphates Nutrition 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 150000002169 ethanolamines Chemical class 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000006081 fluorescent whitening agent Substances 0.000 description 1
- NQUPKCJGWCPODR-UHFFFAOYSA-N hexaneperoxoic acid Chemical compound CCCCCC(=O)OO NQUPKCJGWCPODR-UHFFFAOYSA-N 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229910052816 inorganic phosphate Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- CZPZWMPYEINMCF-UHFFFAOYSA-N propaneperoxoic acid Chemical compound CCC(=O)OO CZPZWMPYEINMCF-UHFFFAOYSA-N 0.000 description 1
- 239000008237 rinsing water Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Abstract
Description
本発明は、洗濯方法に関するものである。より詳述すれば、リネンサプライ業やクリーニング業等の業務用の衛生洗濯に好適な洗濯方法に関するものである。 The present invention relates to a washing method. More specifically, the present invention relates to a washing method suitable for business-use sanitary washing such as linen supply industry and cleaning industry.
リネンサプライ業やクリーニング業等の業務用洗濯における消毒／殺菌工程は、従来、８０℃以上の高温で１０分間以上洗浄する方法がとられている。かかる従来の洗濯方法は、洗浄時の殺菌であり、すすぎ時の衛生については考慮されていない。 In the disinfection / sterilization process in commercial laundry such as a linen supply industry and a cleaning industry, a method of washing at a high temperature of 80 ° C. or higher for 10 minutes or more has been conventionally used. Such a conventional washing method is sterilization at the time of washing, and hygiene at the time of rinsing is not considered.
また、従来、業務用洗濯機として、予洗、本洗及び濯ぎ用の浴槽を複数並設してなり、被洗物をこれら各浴槽間を移動させながら連続して洗濯を行う連続洗濯機が知られている（下記特許文献１参照）。かかる連続洗濯機の内胴（内側ハウジング）や配管には、石鹸かすやスケールなどが付着し、菌が繁殖する温床となる。特にすすぎ用の浴槽では、温度だけでなく、洗剤濃度やアルカリ濃度も低くなり、菌の繁殖には好適な条件となる。そのため、これらの浴槽を通過し、洗濯された洗濯物は不衛生である。 Conventionally, as a commercial washing machine, there is a continuous washing machine in which a plurality of pre-washing, main-washing, and rinsing bathtubs are arranged side by side, and washing is performed continuously while moving the objects to be washed between these bathtubs. (See Patent Document 1 below). Soap debris, scales, and the like adhere to the inner body (inner housing) and piping of such a continuous washing machine, thereby providing a hotbed on which bacteria propagate. Especially in a tub for rinsing, not only the temperature but also the detergent concentration and alkali concentration are low, which is a favorable condition for the growth of bacteria. Therefore, the laundry which passed through these bathtubs and was washed is unsanitary.
ところで、下記特許文献２には、業務用の衛生洗濯において過酢酸等の有機過酸を用いることが開示されている。しかしながら、この文献は、洗浄時のアルカリ性洗剤使用後に、有機過酸を接触させて、中和及び消毒させる方法である。このように消毒だけでなく、残存アルカリの中和にも有機過酸が使用されるため、衛生処理に必要な最適量以上の薬剤が必要であり、薬剤コストがかかるという問題がある。また、この方法では、有機過酸を投入する際の洗濯水は、洗剤の残りかすや汚れなどが多く含まれることから電気伝導度が高く、これらを分解するためにも有機過酸が消費されてしまうので、非効率であり、コストアップにつながる。また、この文献には、洗濯機のスケールによる汚れについては全く触れられていない。
本発明は、上記問題点に鑑み、被洗物の効果的な殺菌と、洗濯機のスケール付着防止と、を同時に行うことができる洗濯方法を提供することを目的とする。 An object of this invention is to provide the washing method which can perform the effective sterilization of to-be-washed object, and scale adhesion prevention of a washing machine simultaneously in view of the said problem.
本発明に係る洗濯方法は、繊維製品からなる被洗物を洗濯する方法であって、洗濯機の浴槽内の洗濯水がｐＨ９以下であり、かつ電気伝導度が使用水との差で１０００μＳ／ｃｍ未満であるときに、有機過酸を前記洗濯水に添加して前記被洗物を処理するものである。 The washing method according to the present invention is a method for washing an article made of textiles, wherein the washing water in the bathtub of the washing machine has a pH of 9 or less, and the electric conductivity is 1000 μS / difference with the use water. When it is less than cm, an organic peracid is added to the washing water to treat the article to be washed.
該洗濯方法の一態様として、洗い用の浴槽とすすぎ用の浴槽をそれぞれ複数並設してなり、被洗物をこれら各浴槽間を移動させながら連続して洗濯を行う連続洗濯機を用いることが好ましい。その場合、前記被洗物を前記洗い用の浴槽内において洗剤を用いて洗い、前記洗剤で処理した被洗物を前記複数のすすぎ用の浴槽内においてすすぎを行う際に、浴槽内の洗濯水がｐＨ９以下であり、かつ電気伝導度が使用水との差で１０００μＳ／ｃｍ未満であるすすぎ用の浴槽に対し、前記有機過酸を投入することが好ましい。 As one aspect of the washing method, use a continuous washing machine in which a plurality of washing tubs and rinsing tubs are provided in parallel, and washing is performed continuously while moving an object to be washed between these bathtubs. Is preferred. In that case, the washing object in the bathtub is washed when the article to be washed is washed in the washing bath with a detergent, and the washing object treated with the detergent is rinsed in the plurality of washing bathtubs. The organic peracid is preferably introduced into a rinsing bath having a pH of 9 or less and an electric conductivity of less than 1000 μS / cm as compared with the water used.
本発明によれば、ｐＨが低く、かつ使用水との電気伝導度の差が１０００μＳ／ｃｍ未満と小さいときに、有機過酸を投入して処理するので、有機過酸が中和や不純物の分解に消費されることを抑えて、効率的に殺菌を行うことができる。また、該有機過酸により、洗濯機に対するスケール付着を抑制することができ、石鹸かすやスケールによる２次汚染を防止することができる。また、浴槽内に被洗物があるため、浴槽の壁面と被洗物との間での物理的衝突による擦れ効果により、有機過酸による化学的なスケールの溶解除去効果と相俟って、洗濯機に対するスケールの付着防止効果を一層高めることができる。 According to the present invention, when the pH is low and the difference in electrical conductivity with the water used is as small as less than 1000 μS / cm, the organic peracid is added and processed. It is possible to efficiently perform sterilization while suppressing consumption for decomposition. Moreover, scale adhesion to the washing machine can be suppressed by the organic peracid, and secondary contamination by soap scum and scale can be prevented. In addition, because there is an object to be cleaned in the bathtub, due to the rubbing effect due to physical collision between the wall surface of the bathtub and the object to be cleaned, combined with the chemical scale dissolution removal effect by organic peracid, The effect of preventing the scale from adhering to the washing machine can be further enhanced.
以下、本発明の実施に関連する事項について詳細に説明する。 Hereinafter, matters related to the implementation of the present invention will be described in detail.
本発明で用いられる有機過酸としては、種々の過オキシカルボン酸が挙げられ、好ましくは、炭素数１〜１０の脂肪族の過オキシカルボン酸を用いることである。具体的には、過ギ酸、過酢酸、過オキシプロピオン酸、過オキシヘキサン酸、シクロヘキサン過オキシカルボン酸などが挙げられ、特に好ましくは過酢酸を用いることである。 Examples of the organic peracid used in the present invention include various peroxycarboxylic acids. Preferably, an aliphatic peroxycarboxylic acid having 1 to 10 carbon atoms is used. Specific examples include performic acid, peracetic acid, peroxypropionic acid, peroxyhexanoic acid, cyclohexaneperoxycarboxylic acid, and the like. Particularly preferred is peracetic acid.
有機過酸は、これを含む有機過酸製剤として用いられることが好ましい。有機過酸製剤としては、過オキシカルボン酸と、これに対応するカルボン酸と、過酸化水素とを含む水溶液が好ましく用いられる。該水溶液中で、過オキシカルボン酸と水とカルボン酸と過酸化水素は平衡状態にあり、過オキシカルボン酸を安定して使用することができる。ここで、過オキシカルボン酸に対応するカルボン酸とは、過オキシカルボン酸の過オキシカルボキシル基をカルボキシル基に置換した化合物を意味する。 The organic peracid is preferably used as an organic peracid preparation containing the organic peracid. As the organic peracid preparation, an aqueous solution containing a peroxycarboxylic acid, a corresponding carboxylic acid, and hydrogen peroxide is preferably used. In the aqueous solution, the peroxycarboxylic acid, water, carboxylic acid and hydrogen peroxide are in an equilibrium state, and the peroxycarboxylic acid can be used stably. Here, the carboxylic acid corresponding to the peroxycarboxylic acid means a compound in which the peroxycarboxyl group of the peroxycarboxylic acid is substituted with a carboxyl group.
このような過オキシカルボン酸と水とカルボン酸と過酸化水素の平衡溶液を用いる場合、その有効過オキシカルボン酸濃度（製剤中に含まれる過オキシカルボン酸自体の濃度）は、１〜２０重量％であることが好ましい。 When such an equilibrium solution of peroxycarboxylic acid, water, carboxylic acid and hydrogen peroxide is used, the effective peroxycarboxylic acid concentration (concentration of peroxycarboxylic acid itself contained in the preparation) is 1 to 20 weights. % Is preferred.
このような平衡溶液は、公知の方法で調製することができ、特に限定されない。例えば、カルボン酸と過酸化水素を水中で混合し、必要に応じて触媒や安定化剤を加えることにより、カルボン酸と過酸化水素が反応して過オキシカルボン酸が生成され、上記平衡溶液が得られる。カルボン酸又は過酸化水素の濃度を高くするほど高濃度の過オキシカルボン酸が生成されるので、上記有効濃度となるようにカルボン酸や過酸化水素の濃度を設定すればよい。 Such an equilibrium solution can be prepared by a known method and is not particularly limited. For example, by mixing a carboxylic acid and hydrogen peroxide in water and adding a catalyst or a stabilizer as necessary, the carboxylic acid and hydrogen peroxide react to produce a peroxycarboxylic acid, and the equilibrium solution becomes can get. As the concentration of carboxylic acid or hydrogen peroxide is increased, a higher concentration of peroxycarboxylic acid is generated. Therefore, the concentration of carboxylic acid or hydrogen peroxide may be set so as to obtain the above effective concentration.
上記のように有機過酸としては過酢酸が好ましく用いられるため、有機過酸製剤は、より好ましくは、過酢酸と酢酸と過酸化水素を含む水溶液からなることである。これらの各含有率は特に限定されないが、過酢酸が１〜２０重量％、酢酸が１０〜３０重量％、過酸化水素が１０〜３０重量％であることが好ましく、より好ましくは過酢酸が３〜１５重量％、酢酸が１０〜２５重量％、過酸化水素が１０〜２０重量％である。また、過酢酸／過酸化水素の重量比が０．０３〜２．０であることが好ましく、０．１５〜１．０であることがより好ましい。 Since peracetic acid is preferably used as the organic peracid as described above, the organic peracid preparation is more preferably composed of an aqueous solution containing peracetic acid, acetic acid and hydrogen peroxide. The content of each of these is not particularly limited, but is preferably 1 to 20% by weight of peracetic acid, 10 to 30% by weight of acetic acid, and 10 to 30% by weight of hydrogen peroxide, more preferably 3% of peracetic acid. -15 wt%, acetic acid 10-25 wt%, hydrogen peroxide 10-20 wt%. Further, the weight ratio of peracetic acid / hydrogen peroxide is preferably 0.03 to 2.0, more preferably 0.15 to 1.0.
本発明において、洗濯対象となる被洗物としては、各種繊維製品が挙げられ、特に限定されない。商業洗濯を行う全ての洗濯物を対象被洗物とすることができる。素材としても特に限定されるものではないが、ポリエステルや綿を対象とすることが好ましく、更には、吸水性が高く、タオルやバスマットに利用される綿製品を被洗物とすることが、とりわけ効果的である。 In the present invention, examples of the item to be washed include various fiber products, and are not particularly limited. All the laundry which performs commercial laundry can be made into a target wash. Although it is not particularly limited as a material, it is preferable to target polyester and cotton. Furthermore, it is preferable to use cotton products that have high water absorption and are used for towels and bath mats as wash items. It is effective.
かかる被洗物を洗濯する際に、本発明では、洗濯機の浴槽内の洗濯水がｐＨ９以下であり、かつ電気伝導度が使用水との差で１０００μＳ／ｃｍ未満であるときに、上記有機過酸を洗濯水に添加して被洗物を処理する。ここで、使用水とは、洗濯に使用するために洗濯機の浴槽に外部から投入される水（より詳細には、投入前の水）のことであり、通常は水道水が用いられる。また、洗濯水とは、浴槽内に収容された液体であり、上記使用水を浴槽内に投入し被洗物を処理している状態での水である。 When washing such an object, in the present invention, when the washing water in the bathtub of the washing machine has a pH of 9 or less and the electrical conductivity is less than 1000 μS / cm in difference with the water used, the organic Peracid is added to the wash water to treat the wash. Here, the water used is water that is poured from the outside into the bathtub of the washing machine for use in washing (more specifically, water before being thrown in), and tap water is usually used. The washing water is a liquid stored in the bathtub, and is water in a state where the use water is poured into the bathtub and the washing object is processed.
洗濯水に対する有機過酸の添加量は、特に限定されないが、槽内の液量に対する有機過酸製剤の濃度として０．０１〜０．５重量％であることが好ましく、より好ましくは０．０５〜０．３重量％である。 The amount of the organic peracid added to the washing water is not particularly limited, but is preferably 0.01 to 0.5% by weight, more preferably 0.05 as the concentration of the organic peracid preparation relative to the amount of liquid in the tank. ~ 0.3% by weight.
有機過酸を添加する際の洗濯水のｐＨについて、その下限は特に限定されないが、ｐＨ４以上であることが好ましい。また、使用水との電気伝導度の差の下限も特に限定されず、該電気伝導度の差は小さいほど、すなわち清浄度が使用水に近づくほど、被洗物の殺菌効果と洗濯機のスケール付着防止効果を高めることができる。 The lower limit of the pH of the washing water when adding the organic peracid is not particularly limited, but is preferably pH 4 or more. Further, the lower limit of the difference in electric conductivity with the used water is not particularly limited, and the smaller the difference in electric conductivity, that is, the closer the cleanness is to the used water, the more the sterilizing effect of the washing object and the scale of the washing machine The adhesion preventing effect can be enhanced.
一般に、洗濯には、洗剤を用いた洗い工程と、その後のすすぎ工程とがあるが、洗い工程では、洗濯水はｐＨや電気伝導度が高く、上記条件を満たさない。すすぎ工程において、汚れや洗剤の残りかすを水とともに浴槽外に排出していくことで、上記条件を満たすようになる。そのため、有機過酸は、すすぎ工程、特にはその後半の段階で浴槽内に投入することが好ましい。 In general, washing includes a washing process using a detergent and a subsequent rinsing process. In the washing process, the washing water has high pH and electrical conductivity and does not satisfy the above conditions. In the rinsing process, the above condition is satisfied by discharging dirt and detergent residue from the bathtub together with water. Therefore, it is preferable that the organic peracid is introduced into the bathtub in the rinsing step, particularly in the latter half of the rinsing step.
上記洗い工程で用いられる洗剤としては、通常は、アルカリ性洗剤又は中性洗剤が用いられ、特にはアルカリ性洗剤が好適である。アルカリ性又は中性洗剤としては、従来一般に洗濯用洗剤に用いられるものを使用することができ、特に限定するものではないが、通常は、界面活性剤、ビルダー、及び必要に応じてその他の添加剤を含む。 As the detergent used in the washing step, an alkaline detergent or a neutral detergent is usually used, and an alkaline detergent is particularly suitable. As the alkaline or neutral detergent, those conventionally used in laundry detergents can be used, and are not particularly limited. Usually, surfactants, builders, and other additives as necessary. including.
上記界面活性剤としては、アニオン界面活性剤及び／又はノニオン界面活性剤を用いることができる。アニオン界面活性剤としては、例えば、（１）炭素数１０〜２０の脂肪酸のアルカリ金属塩（例えば、ナトリウム塩やカリウム塩）、モノエタノールアミン塩やトリエタノールアミン塩等のセッケン；（２）炭素数１０〜２０のα−スルホ脂肪酸エステルナトリウム等のα−スルホ脂肪酸エステル；（３）炭素数１０〜１４のアルキルを有するアルキルベンゼンスルホン酸ナトリウム等のアルキルベンゼンスルホン酸塩；（４）ドデシル硫酸ナトリウム等の炭素数１０〜２０の高級アルコール硫酸エステル塩などが挙げられる。また、ノニオン界面活性剤としては、例えば、（１）アルキル基の炭素数が６〜１４であるポリオキシエチレンアルキルエーテル；（２）アルキル基の炭素数が６〜１８であるポリオキシエチレンアルキルフェノールエーテルなどが挙げられる。 As the surfactant, an anionic surfactant and / or a nonionic surfactant can be used. Examples of the anionic surfactant include (1) soaps such as alkali metal salts (for example, sodium salts and potassium salts) of fatty acids having 10 to 20 carbon atoms, monoethanolamine salts and triethanolamine salts; (2) carbon Α-sulfo fatty acid esters such as sodium α-sulfo fatty acid esters of several 10 to 20; (3) alkylbenzene sulfonates such as sodium alkylbenzene sulfonate having alkyl having 10 to 14 carbon atoms; (4) sodium dodecyl sulfate and the like. Examples thereof include higher alcohol sulfates having 10 to 20 carbon atoms. Examples of the nonionic surfactant include (1) polyoxyethylene alkyl ether having an alkyl group having 6 to 14 carbon atoms; (2) polyoxyethylene alkylphenol ether having an alkyl group having 6 to 18 carbon atoms. Etc.
上記ビルダーとしては、洗剤のｐＨを調整するためのアルカリビルダーが好ましく用いられる。アルカリビルダーとしては、水酸化ナトリウム、水酸化カリウム等のアルカリ金属水酸化物、炭酸ナトリウム等のアルカリ金属炭酸塩、ケイ酸ナトリウム等のアルカリ金属ケイ酸塩などが挙げられる。また、その他のビルダーとして、トリポリリン酸塩、ピロリン酸塩等の無機系リン酸塩、炭酸水素塩などを用いることもできる。 As the builder, an alkali builder for adjusting the pH of the detergent is preferably used. Examples of the alkali builder include alkali metal hydroxides such as sodium hydroxide and potassium hydroxide, alkali metal carbonates such as sodium carbonate, and alkali metal silicates such as sodium silicate. Further, as other builders, inorganic phosphates such as tripolyphosphate and pyrophosphate, bicarbonates, and the like can be used.
上記その他の添加剤としては、例えば、再汚染防止剤、酵素、消泡剤、蛍光増白剤、抗菌剤などが挙げられる。 Examples of the other additives include a recontamination inhibitor, an enzyme, an antifoaming agent, a fluorescent whitening agent, and an antibacterial agent.
洗濯に使用する洗濯機としては、リネンサプライ業やクリーニング業等の業務用洗濯機が好ましく用いられる。業務用洗濯機には、予洗、本洗及びすすぎがそれぞれ単独槽で行われるバッチ式洗濯機と、洗い用（即ち、予洗用、本洗用）及びすすぎ用の複数の浴槽を並設してなり、被洗物をこれら各浴槽間を移動させながら連続して洗濯を行う連続洗濯機がある。これらいずれの洗濯機も使用可能であるが、連続洗濯機を用いることが特に好ましい。 As a washing machine used for washing, commercial washing machines such as a linen supply industry and a cleaning industry are preferably used. The commercial washing machine has a batch washing machine in which pre-washing, main washing, and rinsing are performed in a single tank, and a plurality of bathtubs for washing (that is, pre-washing and main washing) and rinsing. Therefore, there is a continuous washing machine that performs washing continuously while moving the object to be washed between these bathtubs. Any of these washing machines can be used, but it is particularly preferable to use a continuous washing machine.
連続洗濯機としては、特に限定されず、公知のものを用いることができる。例えば、特開平５−２０８１７５号公報に開示された連続洗濯機は、図１にその一例を示すように、両端に入口（１１）と出口（１２）を有するとともに少なくとも下部側を各浴槽（２１〜２８）に分割する複数の隔壁（１３）を有する細長い外側ハウジング（１０）と、該外側ハウジング（１０）の各浴槽（２１〜２８）内に配設された短円筒状ドラム（３１）を軸方向に連結してなる内側ハウジング（３０）とを備え、内側ハウジング（３０）を回転させることによって、浴槽（２１〜２８）内の被洗物の予洗／本洗／すすぎを各浴槽内で順次行いながら、ドラム（３１）間を各ドラム内に設置されたすくいシャベル（３２）の揺動により上流側から下流側に移送するように構成されている。図１に示す連続洗濯機は、８つの浴槽を持つタイプであり、そのうち、第１〜５槽が洗い用の浴槽（２１〜２５）であり、第６〜８槽がすすぎ用の浴槽（２６〜２８）である。 It does not specifically limit as a continuous washing machine, A well-known thing can be used. For example, a continuous washing machine disclosed in Japanese Patent Application Laid-Open No. 5-208175 has an inlet (11) and an outlet (12) at both ends and at least the lower side of each bathtub (21) as shown in FIG. To 28) an elongated outer housing (10) having a plurality of partition walls (13) and a short cylindrical drum (31) disposed in each bathtub (21 to 28) of the outer housing (10). An inner housing (30) connected in the axial direction, and rotating the inner housing (30) to pre-wash / main wash / rinse the objects to be washed in the bathtubs (21 to 28) in each bathtub. While performing sequentially, it is comprised so that it may transfer between the drums (31) from the upstream side to the downstream side by the rocking | swiveling of the scoop shovel (32) installed in each drum. The continuous washing machine shown in FIG. 1 is a type having eight bathtubs, of which the first to fifth tanks are washing bathtubs (21 to 25), and the sixth to eighth tanks are rinsing bathtubs (26 ~ 28).
上記連続洗濯機を用いて洗濯を行う場合、例えば、第１槽（２１）を予洗槽とし、第２〜５槽（２２〜２５）を本洗槽とすることができる。その場合、入口（１１）から投入された被洗物は、第１槽（２１）にて水で予洗される。そして、第２槽（２２）において洗剤が投入されることで、第２〜５槽（２２〜２５）にて被洗物の本洗が行われる。なお、洗い工程での洗濯液の温度は、特に限定されず、通常は４０〜８０℃である。 When washing using the said continuous washing machine, a 1st tank (21) can be used as a pre-washing tank, and a 2nd-5th tank (22-25) can be used as a main washing tank, for example. In that case, the article to be washed introduced from the inlet (11) is pre-washed with water in the first tank (21). And by washing | cleaning in a 2nd tank (22), main washing | cleaning of a to-be-washed object is performed in a 2nd-5th tank (22-25). In addition, the temperature of the washing liquid in the washing step is not particularly limited, and is usually 40 to 80 ° C.
このようにして洗剤で処理された被洗物は、次に、すすぎ用の浴槽（２６〜２８）にてすすぎが行われる。詳細には、すすぎ用の１番目の浴槽である第６槽（２６）にて、上記洗いに供された汚れた水が排水された後、すすぎ用の洗濯水によってすすぎがなされる。すすぎ用の水は、この例では、最終の第８槽（２８）に投入され、そこから第６槽（２６）に向かって流れ、この水によりすすぎがなされる。このようにして第６槽（２６）まで流れてきたすすぎ用の洗濯水は、上記のように被洗物とともに第５槽（２５）から持ち込まれた汚れた水とともに、第６槽（２６）にて排水される。 The article to be cleaned thus treated with the detergent is then rinsed in a rinsing bath (26 to 28). Specifically, in the sixth tank (26) that is the first bathtub for rinsing, the dirty water subjected to the washing is drained, and then rinsed with the washing water for rinsing. In this example, the water for rinsing is put into the final eighth tank (28), flows from there to the sixth tank (26), and is rinsed by this water. The rinse water for rinsing that has flowed up to the sixth tank (26) in this way together with the dirty water brought from the fifth tank (25) together with the article to be washed as described above, together with the sixth tank (26). It is drained at.
上記すすぎ工程において、有機過酸は、洗濯水がｐＨ９以下かつ使用水との電気伝導度の差１０００μＳ／ｃｍ未満であることを満足するすすぎ用の浴槽に対して投入される。好ましくは、有機過酸は、最後のすすぎ用の浴槽である第８槽（２８）に投入される。第８槽（２８）は、すすぎ用の水（使用水）が外部から投入される槽であり、しかも、その前の浴槽である第７層（２７）から被洗物とともに持ち込まれる洗濯水も、それより前の浴槽である第６槽（２６）での洗濯水よりも一般にｐＨが低く、電気伝導度も小さいので、上記洗濯水の条件を満足することができる。 In the rinsing step, the organic peracid is added to a tub for rinsing satisfying that the wash water has a pH of 9 or less and a difference in electrical conductivity from the used water of less than 1000 μS / cm. Preferably, the organic peracid is charged into the eighth tank (28), which is the last rinsing bath. The eighth tank (28) is a tank into which rinsing water (use water) is poured from the outside, and the washing water brought together with the article to be washed from the seventh layer (27), which is the previous tub. Since the pH is generally lower than that of the washing water in the sixth tank (26), which is the previous tub, and the electric conductivity is also small, the above washing water conditions can be satisfied.
このようにして第６〜８槽（２６〜２８）にてすすぎ処理とともに有機過酸で処理された被洗物は、出口（１２）から排出されて、洗濯が終了する。洗濯された繊維製品は、その後、乾燥機等で乾燥されるが、乾燥方法については特に限定されず、公知の方法を採用することができる。 Thus, the washing | cleaning material processed with the organic peracid with the rinse process in the 6th-8th tanks (26-28) is discharged | emitted from an exit (12), and washing | cleaning is complete | finished. The washed textile product is then dried with a dryer or the like, but the drying method is not particularly limited, and a known method can be employed.
以下、本発明を実施例により具体的に説明するが、本発明の範囲はこれに限定されるものではない。 Hereinafter, the present invention will be specifically described by way of examples, but the scope of the present invention is not limited thereto.
（殺菌対象菌）
殺菌対象とする耐熱性菌として、バチルス・セレウス（Bacillus cereus）（以下、セレウス菌という。）を用いた。セレウス菌は、好気性の芽胞形成桿菌であり、耐熱性の芽胞を形成する。
(Sterilized bacteria)
As a heat-resistant bacterium to be sterilized, Bacillus cereus (hereinafter referred to as Bacillus cereus) was used. Bacillus cereus is an aerobic spore-forming rod and forms heat-resistant spores.
（ｐＨ及び電気伝導度の測定方法）
室温（２５℃）にて、ビーカーにサンプル水１００ｍｌを採取し、株式会社堀場製作所製のカスタニーＡＣＴ ｐＨメーター Ｄ−２４を用いて、そのｐＨ電極と導電率電極を液に浸け、数値を読み取り、測定した。使用水との電気伝導度の差（電気伝導度Δ）は、次式により算出した。
電気伝導度Δ＝（サンプル水の電気伝導度）−（使用水の電気伝導度）
（使用薬剤）
・リネンファインＮＰ：ゲンブ株式会社製、アニオン界面活性剤（α−スルホ脂肪酸エステル）とノニオン界面活性剤（炭素数１２のポリオキシエチレンアルキルエーテル）とを重量比（アニオン界面活性剤／ノニオン界面活性剤）で１／３で混合したものとビルダーからなる粉末洗剤、
・ハードビルダーＰＷ：ゲンブ株式会社製のアルカリビルダー、
・過酸化水素：日本パーオキサイド社製、
・ハイジーンプラス：ゲンブ株式会社製の過酢酸製剤（過酢酸４．５重量％、酢酸１５重量％、過酸化水素１６重量％及び水６４．５重量％からなる平衡溶液（水溶液））。
(Measurement method of pH and electrical conductivity)
At room temperature (25 ° C.), 100 ml of sample water was collected in a beaker, and using a Castany ACT pH meter D-24 manufactured by HORIBA, Ltd., the pH electrode and the conductivity electrode were immersed in the liquid, and the values were read. It was measured. The difference in electrical conductivity from the water used (electrical conductivity Δ) was calculated by the following equation.
Electrical conductivity Δ = (Electric conductivity of sample water)-(Electric conductivity of water used)
(Used drug)
-Linen fine NP: manufactured by Genbu Co., Ltd., anionic surfactant (α-sulfo fatty acid ester) and nonionic surfactant (polyoxyethylene alkyl ether having 12 carbon atoms) in weight ratio (anionic surfactant / nonionic surfactant) Powder detergent consisting of a builder and a builder,
・ Hard Builder PW: Alkali Builder made by Genbu Co., Ltd.
・ Hydrogen peroxide: manufactured by Nippon Peroxide
Hygene Plus: Peracetic acid preparation manufactured by Genbu Co., Ltd. (an equilibrium solution (aqueous solution) consisting of 4.5% by weight peracetic acid, 15% by weight acetic acid, 16% by weight hydrogen peroxide, and 64.5% by weight water).
（試験例１）
・条件１：ターゴトメーターによる洗濯試験
５ｃｍ×５ｃｍに裁断した綿からなるタオル（タオルは予めセレウス菌が検出されないことを確認した。）に、１ｍｌ当たり２．０×１０５ｃｆｕ（コロニー形成単位）のセレウス菌を含む溶液を滴下し付着させて、試験布を作製した。
(Test Example 1)
・ Condition 1: Washing test with a tartometer 5 × 10 5 cfu (colony forming unit) per 1 ml of a towel made of cotton cut to 5 cm × 5 cm (towels were confirmed in advance that no Bacillus cereus was detected) The solution containing Bacillus cereus) was dropped and adhered to prepare a test cloth.
前記試験布を洗浄試験機としてターゴトメーターを用いて、８０ｒｐｍ、４０℃、１０分間、浴比（試験布／洗濯水）＝１／３３（重量比）の条件にて、洗濯試験を実施した。各洗濯水には、下記表１，２に記載した通りの濃度で、過酢酸製剤であるハイジーンプラスを添加して、上記洗濯試験を実施した。 Using the test cloth as a washing tester, a washing test was carried out under the conditions of 80 rpm, 40 ° C., 10 minutes, bath ratio (test cloth / washing water) = 1/33 (weight ratio). . The above washing test was carried out by adding Hygene Plus, which is a peracetic acid formulation, to each washing water at a concentration as shown in Tables 1 and 2 below.
洗濯水のｐＨと電気伝導度Δは、表１，２に記載したとおりである。各洗濯水は、使用水（水道水）に、洗剤の残りかすに相当する塩化ナトリウムや、残留アルカリ剤に相当するソーダ灰を溶解させることにより調製し、表１，２記載のｐＨと電気伝導度Δとなるようにこれらの添加量を設定した。ｐＨと電気伝導度Δの値は、ハイジーンプラスの添加直前での測定値である。 The pH of washing water and electric conductivity Δ are as described in Tables 1 and 2. Each wash water is prepared by dissolving sodium chloride corresponding to the residual residue of detergent and soda ash corresponding to the residual alkaline agent in the water used (tap water). These addition amounts were set so that the degree was Δ. The values of pH and electric conductivity Δ are measured values immediately before the addition of Hygiene Plus.
このようにして洗濯を実施した各試験布を乾燥させた後、得られた試験布を、試験管に移し、１００ｍｌの滅菌水を加えた。振倒機にて１時間振倒することで抽出処理を行い、抽出液を５００μｌ採取し、セレウス菌培地（セレウス菌の一次分離に用いるＮＧＫＧ（ＮａＣｌグルシル・キム・ゴッファート）培地）に添加した。プレートを反転させ、３５℃±２℃で４８時間培養した。培養後、培地上のコロニー数をカウントした。評価は、試験布３枚の試験後の平均コロニー数（ｃｆｕ／１００ｃｍ２）を算出し、この平均値により行った。結果を表１，２に示す。 After drying each test cloth thus washed, the obtained test cloth was transferred to a test tube and 100 ml of sterilized water was added. Extraction was performed by shaking for 1 hour on a shaker, and 500 μl of the extract was collected and added to a Bacillus cereus medium (NGKG (NaCl glucyl kim goffer) medium used for primary isolation of Bacillus cereus). Plates were inverted and incubated at 35 ° C. ± 2 ° C. for 48 hours. After cultivation, the number of colonies on the medium was counted. The evaluation was performed by calculating the average number of colonies (cfu / 100 cm 2 ) after the test of three test cloths, and using this average value. The results are shown in Tables 1 and 2.
・条件２：スケール付着防止効果の評価試験
上記条件１で用いた洗濯後の溶液を１００ｍｌ採取し、ステアリン酸カルシウム０．１ｇを添加し、撹拌した。そして、その分散状態を以下の基準で評価した。なお、ステアリン酸カルシウムは、石鹸かすに相当するものであり、これを完全に分散させることができれば、排水とともに浴槽外に排出することができるため、スケールの付着を防止することができる。
○：完全に分散している。×：分散せず。
○: Completely dispersed. X: Not dispersed.
表２に示すように、比較例１では、過酢酸製剤を使用しなかったため、十分な分散状態や殺菌効果が得られなかった。また、比較例２〜４では、過酢酸製剤を添加する洗濯水のｐＨや電気伝導度Δが規定の範囲外であったため、効果が得られなかった。これに対し、本発明に係る実施例では、セレウス菌のコロニー数が１０ｃｆｕ／１００ｃｍ２未満であり優れた殺菌効果が示されるとともに、十分な分散状態が得られた。 As shown in Table 2, in Comparative Example 1, since a peracetic acid preparation was not used, a sufficient dispersion state and bactericidal effect could not be obtained. Moreover, in Comparative Examples 2-4, since the pH of washing water and electrical conductivity (DELTA) which add a peracetic acid formulation were out of the regulation range, the effect was not acquired. In contrast, in the examples according to the present invention, the number of colonies of Bacillus cereus was less than 10 cfu / 100 cm 2 , and an excellent bactericidal effect was shown, and a sufficiently dispersed state was obtained.
（試験例２：連続洗濯機による洗濯試験）
綿からなるタオル（タオルは予めセレウス菌が検出されないことを確認した。）に、１ｍｌ当たり２．０×１０５ｃｆｕ（コロニー形成単位）のセレウス菌を含む溶液を滴下し付着させて、被洗物を作製した。
(Test Example 2: Washing test using a continuous washing machine)
Towels made of cotton (towel was confirmed that the pre cereus is not detected.) And the solution added dropwise by attaching including Bacillus cereus per 1ml 2.0 × 10 5 cfu (colony forming units), the washing A product was made.
連続洗濯機として、三菱重工業産業機器株式会社製の三菱ゼンキングＣＲ６０−８槽を用いて、上記被洗物に対する洗濯試験を実施した。この装置は、洗いが第１〜５槽、すすぎが第６〜８槽で行うことができる連続洗濯機である。 As a continuous washing machine, a washing test was performed on the above-described washing object using Mitsubishi Zenking CR60-8 tank manufactured by Mitsubishi Heavy Industries Industrial Equipment Co., Ltd. This apparatus is a continuous washing machine in which washing can be performed in the first to fifth tanks and rinsing in the sixth to eighth tanks.
洗濯に際しては、図１に示すように、第１槽（２１）を予洗槽として水で予洗し、第２〜５槽（２２〜２５）にて洗剤で本洗を行い、第６槽（２６）にて排水した後、第６〜８槽（２６〜２８）ですすぎを行った。本洗では、下記表３の「本洗」の欄に記載の各薬剤を、表中に記載の濃度となるように全て第２槽に投入した。 At the time of washing, as shown in FIG. 1, the first tank (21) is pre-washed with water, and the main tank is washed with detergent in the second to fifth tanks (22 to 25), and the sixth tank (26 ), And then rinsed in the sixth to eighth tanks (26 to 28). In the main washing, all the chemicals described in the column of “main washing” in Table 3 below were all put into the second tank so as to have the concentrations shown in the table.
すすぎでは、１時間当たり８トンに相当する量のすすぎ用の使用水（水道水）を第８槽（２８）に投入し、これを第８槽（２８）から第６槽（２６）に向けて流し、第６槽（２６）にて排水しながら、第６〜８槽（２６〜２８）にて被洗物のすすぎを行った。かかるすすぎ工程において、実施例のものでは、下記表３に示す過酢酸製剤であるハイジーンプラスを、表中に記載の濃度となるように、第８槽（２８）で投入した。なお、ハイジーンプラスは、第８槽（２８）内の被洗物が入れ替わる毎（２分毎）に上記濃度となるように投入した。一方、比較例５ではハイジーンプラスは添加しなかった。また、比較例６ではハイジーンプラスは第７槽（２７）にて投入した。表３中のｐＨと電気伝導度Δは、ハイジーンプラス投入直前における投入対象浴槽から採取した洗濯水についての測定値であり、従って、実施例５，６及び比較例５では第８層（２８）から採取した洗濯水、比較例６では第７槽（２７）から採取した洗濯水について測定した値である。 In rinsing, water for rinsing (tap water) equivalent to 8 tons per hour is poured into the eighth tank (28) and directed from the eighth tank (28) to the sixth tank (26). The objects to be washed were rinsed in the sixth to eighth tanks (26 to 28) while being drained in the sixth tank (26). In this rinsing step, in the example, Hygene Plus, which is a peracetic acid preparation shown in Table 3 below, was introduced into the eighth tank (28) so as to have the concentration described in the table. The Hygiene Plus was added so that the above concentration was obtained every time the article in the eighth tank (28) was replaced (every 2 minutes). On the other hand, in Comparative Example 5, Hygiene Plus was not added. In Comparative Example 6, Hygene Plus was charged in the seventh tank (27). The pH and electrical conductivity Δ in Table 3 are measured values for the wash water collected from the tub to be charged immediately before the Hygiene Plus is charged. Accordingly, in Examples 5 and 6 and Comparative Example 5, the eighth layer (28). It is the value measured about the wash water extract | collected from No. 7, and the wash water extract | collected from the 7th tank (27) in the comparative example 6. FIG.
このようにしてすすぎをした後、連続洗濯機から取り出し、乾燥により仕上がった被洗物について、セレウス菌の殺菌効果を確認した。 After rinsing in this manner, the sterilizing effect of Bacillus cereus was confirmed on the objects to be washed which were taken out from the continuous washing machine and finished by drying.
殺菌効果の確認は次の通りである。仕上がった被洗物を１０ｃｍ×１０ｃｍの大きさに裁断し、試験管に移し、１００ｍｌの滅菌水を加えた。振倒機にて１時間振倒することで抽出処理を行い、抽出液を５００μｌ採取し、セレウス菌培地に添加した。プレートを反転させ、３５℃±２℃で４８時間培養した。培養後、培地上のコロニー数をカウントした。評価は、試験布３枚の試験後の平均コロニー数（ｃｆｕ／１００ｃｍ２）を算出し、この平均値により行った。結果を表３に示す。 The confirmation of the bactericidal effect is as follows. The finished article to be washed was cut into a size of 10 cm × 10 cm, transferred to a test tube, and 100 ml of sterilized water was added. Extraction was performed by shaking for 1 hour on a shaker, and 500 μl of the extract was collected and added to the Bacillus cereus medium. Plates were inverted and incubated at 35 ° C. ± 2 ° C. for 48 hours. After cultivation, the number of colonies on the medium was counted. The evaluation was performed by calculating the average number of colonies (cfu / 100 cm 2 ) after the test of three test cloths, and using this average value. The results are shown in Table 3.
また、ハイジーンプラスを添加した後の浴槽（実施例５，６及び比較例５では第８槽（２８）、比較例６では第７槽（２７））内の洗濯水を１００ｍｌ採取し、ステアリン酸カルシウム０．１ｇを添加して撹拌し、その分散状態を以下の基準で評価した。
○：完全に分散している。×：分散せず。
○: Completely dispersed. X: Not dispersed.
表３に示すように、過酢酸製剤を用いなかった比較例５や、ｐＨ及び電気伝導度Δが高い段階で過酢酸製剤を投入した比較例６では、十分な殺菌効果が得られず、また分散状態も不十分であった。これに対し、本発明に係る実施例５，６では、セレウス菌のコロニー数が１０ｃｆｕ／１００ｃｍ２未満であり、優れた殺菌効果が示されるとともに、十分な分状態が得られ、スケールの付着防止効果に優れていた。 As shown in Table 3, in Comparative Example 5 in which the peracetic acid preparation was not used, and in Comparative Example 6 in which the peracetic acid preparation was introduced at a stage where the pH and electrical conductivity Δ were high, a sufficient bactericidal effect was not obtained. The dispersion state was also insufficient. On the other hand, in Examples 5 and 6 according to the present invention, the number of colonies of Bacillus cereus is less than 10 cfu / 100 cm 2 , an excellent bactericidal effect is shown, and a sufficient minute state is obtained, preventing the adhesion of scales. Excellent effect.
本発明は、リネンサプライ業やクリーニング業等の業務用洗濯を始めとした様々な衛生洗濯分野に好適に利用することができる。 INDUSTRIAL APPLICABILITY The present invention can be suitably used in various sanitary washing fields including business laundry such as linen supply industry and cleaning industry.
１０…外側ハウジング、２１〜２５…洗い用の浴槽、２６〜２８…すすぎ用の浴槽、３０…内側ハウジング、３１…ドラム、
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| JP2013010912A (en) * | 2011-06-30 | 2013-01-17 | Clariant (Japan) Kk | Washing method |
| JP2013009921A (en) * | 2011-06-30 | 2013-01-17 | Clariant (Japan) Kk | Washing method |
| WO2021225090A1 (en) * | 2020-05-08 | 2021-11-11 | 三菱瓦斯化学株式会社 | Composition for removing protein, and method for manufacturing same |
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