从化学方面剖析
Chemical analysis
（1）
酒店布草洗涤用水要求：PH值6.5-7；总硬度不超过50ppm;铁不超过0.1mg/L；锰不超过0.05mg/L硬水中的钙和镁在洗涤时带有正电荷，形成钙镁皂，沉积织物上使白色植物发灰，失去光泽、改变色光，严重会造成纤维变脆、折断、牢度低。
(1) Requirements for hotel linen washing water: PH value 6.5-7; The total hardness shall not exceed 50ppm; Iron shall not exceed 0.1mg/L; The calcium and magnesium in hard water with manganese no more than 0.05mg/L have a positive charge when washing, forming calcium magnesium soap, depositing on the fabric, making white plants gray, losing luster, changing color, and seriously causing fiber embrittlement, fracture, and low fastness.
（2）酒店布草洗涤过水不清，将化学品残留于布草纤维内。碱性化学品残留。虽然碱性化学品在洗涤过程中对棉纤维是安全的，不会损伤布草的纤维，但过水不清会使碱性洗涤剂残留在布草纤维中，布草烘干后，会使布草发灰变硬，柔软度下降。众所周知，酒店布草与台布、床单的使用状态是完全不同的，台布和床单是在静态条件下使用，而布草是在动态条件下使用，经常性的搓揉、绞拧要求布草必须是柔软的，任何原因造成的布草发硬都有可能会降低布草的牢度。
(2) The hotel linen is not clear after washing, leaving chemicals in the linen fiber. Alkaline chemical residues. Although alkaline chemicals are safe for cotton fiber during washing and will not damage the fiber of linen, the unclear water will cause alkaline detergent to remain in the linen fiber. After the linen is dried, it will make the linen gray and hard, and the softness will decrease. As we all know, the use state of hotel linen is completely different from that of table cloth and bed sheet. The table cloth and bed sheet are used under static conditions, while the linen is used under dynamic conditions. Frequent kneading and twisting require that the linen must be soft, and the stiffness of the linen caused by any reason may reduce the fastness of the linen.
（3）化学剂残留。氯漂剂是洗涤化学品中氧化性较强烈的一种，它的漂白功能使大部分布件上的色素在漂洗时可以去掉，但对棉纤维会有一些损伤。在投放量合理，ph值10.5温度控制在70度以下，相对来说还是安全正常的，但当投放量、温度控制不当时，形成氯漂剂残留，对织物来说，损害是毫无疑问的，好用氧漂对植物伤害比较低，酒店脏布草90%不需要氧化处理。酒店洗衣房可定期用丰离子洗涤剂洗涤。可延长纯棉酒店布草使用寿命，降低布草损耗和节约能耗。
(3) Chemical residue. Chlorine bleaching agent is one of the washing chemicals with strong oxidation. Its bleaching function can remove most of the pigment on the cloth during rinsing, but it will cause some damage to the cotton fiber. It is relatively safe and normal when the dosage is reasonable and the temperature is controlled below 70 ℃ at the ph value of 10.5. However, when the dosage and temperature are not properly controlled, chlorine bleaching agent residues will be formed, and the damage to the fabric is beyond doubt. Easy oxygen bleaching will cause relatively low damage to plants. 90% of hotel dirty linen does not need oxidation treatment. The hotel laundry can be washed regularly with ionic detergent. It can prolong the service life of pure cotton hotel linen, reduce linen loss and save energy consumption.
（4）中和剂是正常洗涤过程中后一个程序中投放的化学品，投放后能中和前几个洗涤程序及过水后残留于布件中少量（≤10ppm）的碱性化学品和氯漂剂，并溶解一些水中的金属离子。正确的投放量能使布件的PH值调整在5.5-6.5之间，与人体的PH值基本一致，是安全的，织物仍将处于正常的使用寿命期，但不适当的大量使用中和剂，会使织物偏酸，从而降低织物牢度。
(4) Neutralizer is a chemical added in the last procedure of the normal washing process, which can neutralize a small amount (≤ 10ppm) of alkaline chemicals and chlorine bleach remaining in the cloth after the first several washing procedures and after the water is added, and dissolve some metal ions in the water. The correct dosage can adjust the PH value of the cloth between 5.5 and 6.5, which is basically consistent with the PH value of the human body. It is safe. The fabric will still be in the normal service life. However, the improper use of a large amount of neutralizer will make the fabric acid, thus reducing the fabric fastness.
Through the introduction of the editor, have you raised your opinion about the reason why the hotel linen was damaged and ashed? I hope it can help you. If you have any questions about hotel linen, please come to our website http://www.jnadx.com Look!
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