CN112168498A - 一种轻薄透气纸尿裤弹性部件及生产工艺 - Google Patents
一种轻薄透气纸尿裤弹性部件及生产工艺 Download PDFInfo
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Abstract
本发明公开了一种轻薄透气纸尿裤弹性部件,上腰围无纺布与下腰围无纺布之间设有氨纶丝,上腰围无纺布和下腰围无纺布相对的一面上分别设有上腰围固定胶和氨纶丝固定加强胶,上腰围无纺布和下腰围无纺布均采用低定量中空纤维纺熔无纺布,上腰围无纺布和下腰围无纺布两端通过超声波热封连接;一种轻薄透气纸尿裤弹性部件的生产工艺:S1、上腰围无纺布放卷,施加上腰围固定胶;S2、对上腰围无纺布两端进行包折;S3、氨纶丝放卷,调整氨纶丝拉伸倍率;S4、下腰围无纺布放卷,施加氨纶丝固定加强胶;S5、传输至复合导辊复合;S6、进行热封。本发明的优点在于:不易渗胶、弹力不易衰减、氨纶丝蠕变率低、传送过程中弹性部件不易回弹。
Description
技术领域
本发明涉及弹性部件技术领域,具体是指一种轻薄透气纸尿裤弹性部件及生产工艺。
背景技术
现有纸尿裤弹性部件的材料用量过高,直接关联的成本过高。现有纸尿裤弹性部件的热熔胶用量高,非织造布纤维分布不均匀,导致了在设备上复合过程会产生渗胶现象,热熔胶透过非织造积在导辊上,形成积胶,设备长时间运转会粘粘非织造形成拉丝,严重时会导致断料,影响生产效率。
CN201920010738.4描述了一种纸尿裤弹性部件,目的是提高弹性部件的透气性,但有一个的缺点,其在生产过程中,在材料转移需要利用负压吸附,材料透气性的提升,弹性部件在转移过程中由于负压吸附的作用力降低,受弹性部件自身的弹性应力影响而产生回缩,导致弹性部件与纸尿裤主体复合时,弹性部件的实际宽度小于理论宽度,同时由于负压吸附的作用力降低,弹性部件转移过程中会提高吸附不良,从而提高弹性部件缺失的风险。
发明内容
本发明要解决的技术问题是,针对上述问题,提供一种不易渗胶、弹力不易衰减、氨纶丝蠕变率低、传送过程中弹性部件不易回弹的轻薄透气纸尿裤弹性部件及生产工艺。
为解决上述技术问题,本发明提供的技术方案为:一种轻薄透气纸尿裤弹性部件,包括上腰围无纺布和下腰围无纺布,所述上腰围无纺布与下腰围无纺布之间设有氨纶丝,所述上腰围无纺布和下腰围无纺布相对的一面上分别设有上腰围固定胶和氨纶丝固定加强胶,所述上腰围固定胶和氨纶丝固定加强胶与氨纶丝胶接,所述上腰围无纺布和下腰围无纺布均采用低定量中空纤维纺熔无纺布,所述上腰围无纺布和下腰围无纺布两端浸润有热熔胶,所述上腰围无纺布和下腰围无纺布两端通过超声波热封连接。
一种轻薄透气纸尿裤弹性部件的生产工艺,包括以下步骤:
S1、上腰围无纺布放卷,经上腰围无纺布胶机,通过夹缝式涂布刮枪施加上腰围固定胶;
S2、上腰围无纺布两端包折板对上腰围无纺布两端进行包折;
S3、氨纶丝放卷,经氨纶丝张力控制机构,调整氨纶丝拉伸倍率;
S4、下腰围无纺布放卷,经氨纶丝固定加强胶机,通过夹缝式涂布刮枪施加氨纶丝固定加强胶;
S5、上腰围无纺布、氨纶丝、下腰围无纺布传输至复合导辊复合;
S6、超声波热封机构进行热封,最终收卷生产出弹性部件成品。
本发明与现有技术相比的优点在于:结合现有的中空纤维技术,能够实现材料用量的降低,同时保证工艺稳定性,热熔胶与低定量中空纤维纺熔无纺布接触,由于选定的无纺布纤维成网与孔隙分布均匀,热熔胶能够更好的浸润无纺布,但不会浸透无纺布,材料之间更好地形成铆合,透气性和粘合效果比实心纤维无纺布要好,橡筋蠕变率更低;上腰围无纺布和下腰围无纺布两端浸润热熔胶后通过超声波热封连接,能让负压吸附应力更强,弹性部件不易回缩,降低掉片风险。
进一步的,所述上腰围固定胶和氨纶丝固定加强胶均采用点状胶型,所述上腰围固定胶和氨纶丝固定加强胶两个相邻施胶点的间距设置为2~3mm。
进一步的,所述低定量中空纤维纺熔无纺布,包括SMS、SMMS、SSMS、SSMMS类,主要为PP组分,其中中空纤维比例为100%,纺粘无纺布层(S层)比例在70%~80%,纤维直径约15~19μm,纤维细度1.5~2.5丹尼尔,熔喷无纺布层(M层)比例在20%~30%,纤维直径约2~5μm。
进一步的,所述氨纶丝之间的间距为6.0~6.5mm,拉伸倍率设置在1.9~2.1。
进一步的,所述上腰围固定胶的宽度为250~260mm,所述上腰围固定胶两端与上腰围无纺布两端的距离为35~45mm,所述氨纶丝固定加强胶有四条,外侧所述氨纶丝固定加强胶与下腰围无纺布两端的距离为35~45mm,内侧所述氨纶丝固定加强胶之间的距离为90~110mm,外侧与内侧所述氨纶丝固定加强胶之间的距离为15~25mm。
附图说明
图1是本发明一种轻薄透气纸尿裤弹性部件的拆分状态图。
图2是本发明一种轻薄透气纸尿裤弹性部件的剖视图。
图3是本发明一种轻薄透气纸尿裤弹性部件及生产工艺的对照例SSMS 13gsm腰围无纺布(原胶量)的数据表。
图4是本发明一种轻薄透气纸尿裤弹性部件及生产工艺的实施例SSMS 11gsm腰围无纺布(原胶量)的数据表。
图5是本发明一种轻薄透气纸尿裤弹性部件及生产工艺的对照例SSMS13gsm腰围无纺布(原胶量)的数据表。
图6是本发明一种轻薄透气纸尿裤弹性部件及生产工艺的实施例SSMS 11gsm腰围无纺布(降10%胶量)的数据表。
图7是本发明一种轻薄透气纸尿裤弹性部件及生产工艺的实施例SSMS 11gsm腰围无纺布(降20%胶量)的数据表。
附图说明:1、上腰围无纺布,2、下腰围无纺布,3、氨纶丝,4、上腰围固定胶,5、氨纶丝固定加强胶。
具体实施方式
实施例
S1、上腰围无纺布放卷,经上腰围无纺布胶机,通过夹缝式涂布刮枪施加上腰围固定胶,采用更加均匀的点状胶型,两个相邻施胶点的间距设置在2~3mm,胶丝重叠度为0,上腰围固定胶为250~260mm宽的连续刮胶,刮胶距离腰围无纺布两端约35~45mm;
S2、上腰围无纺布两端包折板对上腰围无纺布两端进行包折;
S3、氨纶丝放卷,氨纶丝间距设置为6.0~6.5mm,经氨纶丝张力控制机构,调整氨纶丝拉伸倍率,使得拉伸倍率设置在1.9~2.1;
S4、下腰围无纺布放卷,经氨纶丝固定加强胶机,通过夹缝式涂布刮枪施加氨纶丝固定加强胶,氨纶丝固定加强胶有四条,其宽度为15~25mm的连续刮胶,四条刮胶之间具有一定的间距,其中侧边最外侧刮胶距离腰围无纺布两端距离约35~45mm,两端相邻刮胶间距约15~25mm,中间相邻刮胶间距约90~110mm;
S5、上腰围无纺布、氨纶丝、下腰围无纺布传输至复合导辊复合;
S6、超声波热封机构进行热封,最终收卷生产出弹性部件成品。
本发明及其实施方式进行了描述,这种描述没有限制性,附图中所述的也只是本发明的实施方式之一,实际的结构并不局限于此。总而言之如果本领域的普通技术人员受其启示,在不脱离本发明创造宗旨的情况下,不经创造性的设计出与该技术方案相似的结构方式及实施例,均应属于本发明的保护范围。
Claims (6)
1.一种轻薄透气纸尿裤弹性部件,包括上腰围无纺布(1)和下腰围无纺布(2),其特征在于:所述上腰围无纺布(1)与下腰围无纺布(2)之间设有氨纶丝(3),所述上腰围无纺布(1)和下腰围无纺布(2)相对的一面上分别设有上腰围固定胶(4)和氨纶丝固定加强胶(5),所述上腰围固定胶(4)和氨纶丝固定加强胶(5)与氨纶丝(3)胶接,所述上腰围无纺布(1)和下腰围无纺布(2)均采用低定量中空纤维纺熔无纺布,所述上腰围无纺布(1)和下腰围无纺布(2)两端浸润有热熔胶,所述上腰围无纺布(1)和下腰围无纺布(2)两端通过超声波热封连接。
2.根据权利要求1所述的一种轻薄透气纸尿裤弹性部件,其特征在于:所述上腰围固定胶(4)和氨纶丝固定加强胶(5)均采用点状胶型,所述上腰围固定胶(4)和氨纶丝固定加强胶(5)两个相邻施胶点的间距设置为2~3mm。
3.根据权利要求1所述的一种轻薄透气纸尿裤弹性部件,其特征在于:所述低定量中空纤维纺熔无纺布,包括SMS、SMMS、SSMS、SSMMS类,主要为PP组分,其中中空纤维比例为100%,纺粘无纺布层(S层)比例在70%~80%,纤维直径约15~19μm,纤维细度1.5~2.5丹尼尔,熔喷无纺布层(M层)比例在20%~30%,纤维直径约2~5μm。
4.根据权利要求1所述的一种轻薄透气纸尿裤弹性部件,其特征在于:所述氨纶丝(3)之间的间距为6.0~6.5mm,拉伸倍率设置在1.9~2.1。
5.根据权利要求1所述的一种轻薄透气纸尿裤弹性部件,其特征在于:所述上腰围固定胶(4)的宽度为250~260mm,所述上腰围固定胶(4)两端与上腰围无纺布(1)两端的距离为35~45mm,所述氨纶丝固定加强胶(5)有四条,外侧所述氨纶丝固定加强胶(5)与下腰围无纺布(2)两端的距离为35~45mm,内侧所述氨纶丝固定加强胶(5)之间的距离为90~110mm,外侧与内侧所述氨纶丝固定加强胶(5)之间的距离为15~25mm。
6.一种轻薄透气纸尿裤弹性部件的生产工艺,其特征在于,包括以下步骤:
S1、上腰围无纺布(1)放卷,经上腰围无纺布(1)胶机,通过夹缝式涂布刮枪施加上腰围固定胶(4);
S2、上腰围无纺布两端包折板对上腰围无纺布(1)两端进行包折;
S3、氨纶丝(3)放卷,经氨纶丝张力控制机构,调整氨纶丝(3)拉伸倍率;
S4、下腰围无纺布(2)放卷,经氨纶丝固定加强胶机,通过夹缝式涂布刮枪施加氨纶丝固定加强胶(5);
S5、上腰围无纺布(1)、氨纶丝(3)、下腰围无纺布(2)传输至复合导辊复合;
S6、超声波热封机构进行热封,最终收卷生产出弹性部件成品。
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