CN108950863A - 湿法水刺油滤布及其制备方法 - Google Patents

湿法水刺油滤布及其制备方法 Download PDF

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CN108950863A
CN108950863A CN201811108157.0A CN201811108157A CN108950863A CN 108950863 A CN108950863 A CN 108950863A CN 201811108157 A CN201811108157 A CN 201811108157A CN 108950863 A CN108950863 A CN 108950863A
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谷源明
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Abstract

本发明涉及湿法水刺油滤布及其制备方法，属于无纺布制造领域。该油滤布具有三层结构，中间层为浆粕纤维层，上、下两层为疏水亲油层，所述的浆粕纤维层材质为100％的浆粕纤维或由80％的浆粕纤维与20％的短纤维混合组成；所述的疏水亲油层材质为丙烯酸、含氟丙烯酸、羟基硅油、乙烯酯中的一种或两种以上。本发明提供的湿法水刺油滤布是一款性能优异的过滤产品，其采用了湿法水刺无纺布为基材，在该水刺产品在浆粕纤维层两侧涂覆一层疏水亲油膜既保证了产品的拉伸强度，使产品具有高强力，又保证了产品的过滤性和安全性。因而，本发明产品可以应用于油固分离领域。

Description

湿法水刺油滤布及其制备方法
技术领域
本发明涉及一种无纺布，该无纺布由湿法无纺布为底布，通过后整理工艺，制成湿法油滤布，属于无纺布制造领域。
背景技术
目前油滤布市场多采用纸制油滤布，其产品强力低，过滤效果差，且纸制产品中含有多种添加剂，在食用油过滤上有诸多安全隐患。因此，本领域亟需一种制备方法简单、成本低、性能好的油滤布。
发明内容
针对现有油滤材料存在的缺陷，本发明提供一种工艺简单，所用材料价格较低，且具有较高强力、较好过滤性能和安全的油滤布及其制备方法。本发明采用如下技术方案：湿法水刺油滤布，该油滤布具有三层结构，中间层为浆粕纤维层，上、下两层为疏水亲油层，所述的浆粕纤维层材质为100％的浆粕纤维或由80％的浆粕纤维与20％的短纤维混合组成；所述的疏水亲油层材质为丙烯酸、含氟丙烯酸、羟基硅油、乙烯酯中的一种或两种以上。
进一步的，所述短纤维包括木浆纤维、粘胶纤维、天丝、PVA纤维中的一种或两种以上。
上述湿法水刺油滤布的制备方法为：将100％的浆粕纤维或80％的浆粕纤维与20％的短纤维通过湿法成网经过均匀混合湿法成网而成。通过水刺固结、烘箱预烘干、浸渍后处理、烘箱烘燥、卷绕分切制成。
具体方法为：
S1.浆粕纤维层的湿法成网：将100％的浆粕纤维或80％的浆粕纤维与20％的短纤维均匀的混合在备浆罐体中，采用阶梯型或锥形布浆器将纤维层均匀铺设在成型网帘上，经过负压抽吸脱水，形成纤维网；该纤维网均匀分布，强度不高，不能承受额外的拉力。
S2.水刺固结：经高压水刺固结，使浆粕纤维层中的浆粕纤维或浆粕纤维与短纤维纤维缠结，形成湿法水刺无纺布。
S3.烘箱预烘干：水刺成型后的湿法水刺无纺布经过烘箱进行预烘干，烘箱循环风机及排气风机效率为50-70％，烘箱温度为80-100℃。
S4.浸渍后处理：烘燥后无纺布送入后处理设备中，加入整理剂，经过一浸一轧或两浸两轧，使无纺布两面均匀涂覆整理剂作为疏水亲油层。
S5.烘箱烘燥：后处理后的无纺布经过烘箱进行烘干，烘箱循环风机及排气风机效率为70-100％，烘箱温度为90-140℃。
S6.卷绕及分切：将烘燥后的湿法水刺油滤布材料分切成小幅宽并卷绕成卷。
优选的，浆粕纤维湿法成网的速度为100-200m/min，成型头内压力40-55bar，负压抽吸水箱压力值为：40-85％。
优选的，所述步骤S2中采用七道水刺头横向方向平行固结，高压水刺压力依次为：20bar、30bar、35bar、40bar、50bar、55bar、60bar。
本发明同时请求保护上述油滤布在油固分离中的应用。
本发明提供的湿法水刺油滤布是一款性能优异的过滤产品，其采用了湿法水刺无纺布为基材，在该水刺产品在浆粕纤维层两侧涂覆一层疏水亲油膜既保证了产品的拉伸强度，使产品具有高强力，又保证了产品的过滤性和安全性。因而，本发明产品可以应用于油固分离领域，如食用油过滤，导热油过滤等，是油固分离未来的发展趋势。
附图说明
图1为本发明湿法油滤布结构示意图。其中1、疏水亲油层，2、浆粕纤维层，3、疏水亲油层。
具体实施方式
下面通过附图和具体实施例详述本发明，但不限制本发明的保护范围。如无特殊说明，本发明所采用的实验方法均为常规方法，所用实验器材、材料、试剂等均可从化学公司购买。
本发明湿法水刺油滤布需要多种生产设备共同配合生产，包括备浆罐、湿法成网机、高压水刺机、烘箱、后处理设备、退卷设备、卷绕设备、分切设备等。上述设备均市售可得。
实施例1
该油滤布具有三层结构，中间层为浆粕纤维层，上、下两层为疏水亲油层，所述的浆粕纤维层材质为100％的浆粕纤维或由80％的浆粕纤维与20％的短纤维混合组成；所述的疏水亲油层材质为丙烯酸、含氟丙烯酸、羟基硅油、乙烯酯中的一种或两种以上。所述短纤维包括木浆纤维、粘胶纤维、天丝、PVA纤维中的一种或两种以上。
浆粕纤维层的湿法成网：先将100％的浆粕纤维或80％的浆粕纤维与20％的短纤维加入料罐中充分混合，通过冲浆泵将混合液输入到锥形布浆器中，在成型网帘上形成纤维网，纤维网在负压抽吸的作用下，迅速脱水，形成具有初步强力的浆粕纤维网。浆粕纤维层湿法成网的速度为80-160m/min，成型头压力45bar，负压抽吸箱压力值为：65％。
水刺固结：将浆粕纤维层湿法成网送入高压水刺机，使其在高压水刺头的冲击和抽吸箱的抽吸下，将浆粕纤维层中的纤维与短纤维缠结，同时进行脱水，形成结合紧密，不起层、不掉屑的湿法水刺无纺布也就是浆粕纤维层。
预烘干：水刺成型后的浆粕纤维层经过烘箱进行预烘干，烘箱循环风机效率分别为60％，60％及排气风机效率分别为60％，55％，烘箱温度为100℃。
后整理：烘燥后无纺布送入后处理设备中，加入整理剂，整理剂为含氟丙烯酸，经过两浸两轧，轧余率70％-80％，使无纺布两面均匀涂覆整理剂。
烘干：水刺成型后的浆粕纤维层经过烘箱进行预烘干，烘箱循环风机效率分别为80％，80％，排气风机效率分别为70％，70％，烘箱温度为120℃。
最后经卷绕、分切形成最终产品。
以上所述，仅为本发明创造较佳的具体实施方式，但本发明创造的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明创造披露的技术范围内，根据本发明创造的技术方案及其发明构思加以等同替换或改变，都应涵盖在本发明创造的保护范围之内。

Claims (7)

1.湿法水刺油滤布，其特征在于，该油滤布具有三层结构，中间层为浆粕纤维层，上、下两层为疏水亲油层，所述的浆粕纤维层材质为100％的浆粕纤维或由80％的浆粕纤维与20％的短纤维混合组成；所述的疏水亲油层材质为丙烯酸、含氟丙烯酸、羟基硅油、乙烯酯中的一种或两种以上。
2.根据权利要求1所述的湿法水刺油滤布，其特征在于，所述短纤维包括木浆纤维、粘胶纤维、天丝、PVA纤维中的一种或两种以上。
3.如权利要求1所述的湿法水刺油滤布的制备方法，其特征在于，将100％的浆粕纤维或80％的浆粕纤维与20％的短纤维通过水刺固结、烘箱预烘干、浸渍后处理、烘箱烘燥、卷绕分切制成。
4.根据权利要求3所述的方法，其特征在于，具体包括以下步骤：
S1.浆粕纤维层的湿法成网：将100％的浆粕纤维或80％的浆粕纤维与20％的短纤维均匀的混合在备浆罐体中，采用阶梯型或锥形布浆器将纤维层均匀铺设在成型网帘上，经过负压抽吸脱水，形成纤维网；该纤维网均匀分布，强度不高，不能承受额外的拉力；
S2.水刺固结：经高压水刺固结，使浆粕纤维层中的浆粕纤维或浆粕纤维与短纤维纤维缠结，形成湿法水刺无纺布；
S3.烘箱预烘干：水刺成型后的湿法水刺无纺布经过烘箱进行预烘干，烘箱循环风机及排气风机效率为50-70％，烘箱温度为80-100℃；
S4.浸渍后处理：烘燥后无纺布送入后处理设备中，加入整理剂，经过两浸两轧，使无纺布两面均匀涂覆整理剂作为疏水亲油层；
S5.烘箱烘燥：后处理后的无纺布经过烘箱进行烘干，烘箱循环风机及排气风机效率为70-100％，烘箱温度为90-140℃；
S6.卷绕及分切：将烘燥后的湿法水刺油滤布材料分切成小幅宽并卷绕成卷。
5.根据权利要求4所述的方法，其特征在于，浆粕纤维湿法成网的速度为80-160m/min，成型头内压力40-55bar，负压抽吸水箱压力值为：40-85％。
6.根据权利要求4所述的方法，其特征在于，所述步骤S2中采用七道水刺头横向方向平行固结，高压水刺压力依次为：20bar、30bar、35bar、40bar、50bar、55bar、60bar。
7.如权利要求1所述的湿法水刺油滤布在油固分离中的应用。
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