CN112796098A - 中水条件下毛巾织物冷堆高白度节约型染整前处理工艺 - Google Patents
中水条件下毛巾织物冷堆高白度节约型染整前处理工艺 Download PDFInfo
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Abstract
本发明公开了中水条件下毛巾织物冷堆高白度节约型染整前处理工艺，属于纺织印染技术领域，具体操作步骤如下：(1)冷堆，工艺配方和用量：30％烧碱30‑50g/L、27.5％双氧水70‑90g/L、速练剂KR‑9BK 4‑10g/L、速练剂KR‑9DW 10‑20g/L，堆置温度为35℃，堆置时长为8‑30小时；(2)煮底，工艺配方和用量：27.5％双氧水8‑20g/L、增白剂0.4g/L、煮底温度为97‑100℃，煮底时长为50分钟，浴比为1:10。本发明的半成品和成品在白度和强力、手感方面要好于现有技术半成品和成品，本工艺可以缩短工作时间提高生产效率，降低化学品消耗减轻污水排放，也带来显著的间接经济效益。
Description
技术领域
本发明属于纺织印染技术领域，具体是中水条件下毛巾织物冷堆高白度节约型染整前处理工艺。
背景技术
印染行业是国民经济中传统用水大户，而且染整工艺对水质有很高的质量要求。具体到毛巾染整行业，主要颜色是白色和浅艳色；为了生产出白度晶莹剔透或浅色鲜艳的毛巾制品，对水质的要求更是严上加严。水质要求：色度(铂钴度)≤10，PH值为6.5-8.5，总硬度≤150mg/L。
多年以来，在工厂管理和技术人员的努力下，毛巾染厂已有一套成熟稳定的毛巾染整前处理工艺。
我们曾抽测了河北某重点印染集群地区三家毛巾染厂的中水质量指标：
染厂A：色度(目测)发黄，PH值为8.7，总硬度为125mg/L，电导率为3560us；
染厂B：色度(目测)无色透明，PH值为8.0，总硬度为50mg/L，电导率为66us；
染厂C：色度(目测)发黄，PH值为6.95，总硬度为125mg/L，电导率为480us。
可以看到，各家染厂的中水的水质各不相同，而且都明显比染整用水标准要差。除了以上可用常规手段测出的指标外，中水中可能还有其它未知含量的化学物质。中水的大量使用对毛巾制品质量下降带来的影响是显著的，主要体现在白度指标上，带来的后果是加白毛巾发乌、艳色毛巾颜色萎暗，导致客户投诉和索赔。为了不流失客户，在中水条件下还要保证原来的毛巾半成品质量标准，工厂不得不在前处理工艺中将双氧水的用量提高了100％，同时为了稳定工作液中的双氧水分解，又不得在工作液的用大量的水玻璃做稳定剂。直接带来的影响是前处理工艺成本的大幅上升和毛巾半制品手感变硬，后面再通过施加大量的柔软剂来弥补手感。间接带来的影响是化学品用量高，加重污水处理负担和生态环境压力。
下面为染厂A、染厂B使用中水前后的毛巾前处理工艺：
(1)冷堆。
工艺流程：坯布→浸轧工作液(W＝100％左右)→温房堆置(40℃堆置24h)。
(2)煮底。
工艺配方：
27.5％双氧水 19.6g/l
增白剂 0-0.4g/l
工艺流程：煮底(97-100℃*50分、浴比1:10)→90℃热水洗20分钟→80℃水洗10分→酸洗→脱水→烘干。
如何在满足或高于现毛巾织物半成品质量水平条件下，开发一套适合中水条件下的节约型染整前处理工艺是亟待解决的问题。
发明内容
本发明的目的在于提供中水条件下毛巾织物冷堆高白度节约型染整前处理工艺，主要针对使用中水进行染整生产的毛巾工厂，基于客户现有生产设备布局，生产出高白度质量水平毛巾，同时大幅降低现有工艺生产成本和污水排放压力以解决上述背景技术中提出的问题。
为实现上述目的，本发明提供如下技术方案：
中水条件下毛巾织物冷堆高白度节约型染整前处理工艺，具体操作步骤如下：
(1)冷堆。工艺配方和用量：30％烧碱30-50g/L、27.5％双氧水70-90g/L、速练剂KR-9BK 4-10g/L、速练剂KR-9DW 10-20g/L，堆置温度为35℃，堆置时长为8-30小时；工艺流程：将坯布进行浸轧，然后在温房内进行堆置。
(2)煮底。工艺配方和用量：27.5％双氧水8-20g/L、增白剂0.4g/L、煮底温度为97-100℃，煮底时长为50分钟，浴比为1:10；工艺流程：煮底加白一浴后，先在90℃的热水中水洗20分钟，再在80℃的热水中水洗10分钟，然后依次进行酸洗、脱水和烘干处理。
作为本发明的进一步方案：所述步骤(1)浸轧采用两浸两轧.
作为本发明的再进一步方案：所述步骤(2)采用的增白剂为4BK、BHT或CXT三者其中的一种。
与现有技术相比，本发明的半成品和成品在白度和强力、手感方面要好于现有技术半成品和成品，消耗比现有技术主要化学品消耗降低50％左右，是节约型染整新工艺，降低了化学品的使用成本，本发明技术化学品使用成本约310元/吨毛巾，比现有技术化学品使用成本低10-20％，另外由于本工艺可以缩短工作时间提高生产效率，降低化学品消耗减轻污水排放，也带来显著的间接经济效益。
具体实施方式
下面结合具体实施方式对本专利的技术方案作进一步详细地说明。
实施例一
纯棉32s/2合股毛巾，加白。
中水条件下毛巾织物冷堆高白度节约型染整前处理工艺，具体操作步骤如下：
(1)冷堆：所采用的助剂和工艺用量如表1所示；
表1
(2)煮底：所采用的助剂和工艺用量如表2所示；
表2
| 助剂名称 | 工艺用量 |
| 27.5％双氧水 | 19g/L |
| 增白剂4BK | 0.4g/L |
| 煮底温度 | 98℃ |
| 煮底时间 | 50min |
实施例二
纯棉21s毛巾，驼色。
中水条件下毛巾织物冷堆高白度节约型染整前处理工艺，具体操作步骤如下：
(1)冷堆：所采用的助剂和工艺用量如表3所示；
表3
(2)煮底：所采用的助剂和工艺用量如表4所示；
表4
| 助剂名称 | 工艺用量 |
| 27.5％双氧水 | 9.6g/L |
| 煮底温度 | 98℃ |
| 煮底时间 | 50min |
本发明所采用速练剂为KR-9BK和KR-9DW，由KR-9BK和KR-9DW共同组成中低温快速前处理工艺助剂系统，其中速练剂KR-9BK为能在中低温条件下发挥优异乳化、净洗作用的精练助剂；速练剂KR-9DW为中低温条件下集控制和催化双氧水分解功能于一体的特殊助剂；KR-9BK和KR-9DW本身均为无磷体系，对生态环境友好；增白剂可采用4BK、BHT或 CXT。
上面对本专利的较佳实施方式作了详细说明，但是本专利并不限于上述实施方式，在本领域的普通技术人员所具备的知识范围内，还可以在不脱离本专利宗旨的前提下作出各种变化。
Claims (3)
1.中水条件下毛巾织物冷堆高白度节约型染整前处理工艺，其特征在于，具体操作步骤如下：
(1)冷堆,工艺配方和用量：30％烧碱30-50g/L、27.5％双氧水70-90g/L、速练剂KR-9BK4-10g/L、速练剂KR-9DW 10-20g/L，堆置温度为35℃，堆置时长为8-30小时；工艺流程：将坯布进行浸轧，然后在温房内进行堆置；
(2)煮底,工艺配方和用量：27.5％双氧水8-20g/L、增白剂0.4g/L、煮底温度为97-100℃，煮底时长为50分钟，浴比为1:10；工艺流程：煮底加白一浴后，先在90℃的热水中水洗20分钟，再在80℃的热水中水洗10分钟，然后依次进行酸洗、脱水和烘干处理。
2.根据权利要求1所述的中水条件下毛巾织物冷堆高白度节约型染整前处理工艺，其特征在于，所述步骤(1)浸轧采用两浸两轧。
3.根据权利要求1所述的中水条件下毛巾织物冷堆高白度节约型染整前处理工艺，其特征在于，所述步骤(2)采用的增白剂为4BK、BHT或CXT三者其中的一种。
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| CN109576975A (zh) * | 2017-09-28 | 2019-04-05 | 浙江工业职业技术学院 | 一种纯棉厚重织物短流程前处理方法 |
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|---|---|---|---|---|
| EP2103735A1 (en) * | 2008-03-18 | 2009-09-23 | Unilever PLC | Catalytic bleaching of substrates |
| CN103866552A (zh) * | 2012-12-17 | 2014-06-18 | 青岛同冠王实业有限公司 | 漂白亲水毛巾布的生产工艺 |
| CN104594022A (zh) * | 2013-10-31 | 2015-05-06 | 青岛鑫益发工贸有限公司 | 纯棉粗厚织物低碱冷堆前处理 |
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