CN114767387B - 一种下渗性好的纸尿裤生产方法 - Google Patents
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Abstract
本发明涉及一种下渗性好的纸尿裤生产方法,包括以下方法:制造导流层、复合、切割,形成的纸尿裤本体包括由上而下设置的导流层、纤维层、吸收芯层、不透液性底层,导流层经过第一热压辊机构,导流层两侧形成多个向上凸起的导流条和向下凹陷的防漏孔,导流层中部形成向上凸起的第一凸部和向下凹陷的压孔,提高了导流层的导流、下渗、防侧漏的能力;纤维层代替透液无纺布顶层和绒毛浆纸层,纤维层纤维之间的间隔大,颗粒状的便便容易进入和穿过纤维层,提高了便液下渗的效果,解决了较大的颗粒状的便便难以下渗,液体容易发生侧漏,尿液和便液的下渗效果差的技术问题。
Description
技术领域
本发明涉及一次性卫生用品领域,尤其涉及一种下渗性好的纸尿裤生产方法。
背景技术
纸尿裤通常采用导流层、透液无纺布顶层、吸收芯层、不透液性底层,导流层具有导流的作用,吸收芯层顶部通常设有一层绒毛浆纸层,尿液和便液需经过导流层、透液无纺布顶层、绒毛浆纸层后,才能进入吸收芯层的高分子进行吸收,然而,较大的颗粒状的便便是难以穿过的透液无纺布顶层和绒毛浆纸层,较大的颗粒状的便便难以下渗;当短时间内液体较多时,导流层难以短时间下渗全部液体,部分液体会向两侧扩散,容易导致液体发生侧漏,尿液和便液的下渗效果差。
发明内容
因此,针对上述的问题,本发明提出一种下渗性好的纸尿裤生产方法。其解决了较大的颗粒状的便便难以下渗,液体容易发生侧漏,尿液和便液的下渗效果差的技术问题。
为实现上述目的,本发明采用了以下技术方案:
一种下渗性好的纸尿裤生产方法,包括以下方法:
(1)制造导流层:导流层输送过程中,经过第一热压辊机构,第一热压辊机构的第一凸条和第一凹槽在导流层顶部两侧形成多个向上凸起的导流条,第一打孔刀和第一打孔槽在导流层顶部两侧形成多个向下凹陷的防漏孔,第二凸部和第二凹槽在导流层上形成多个第一凸部,第一凸部密布于导流层中部,多个第一凸部之间形成导流槽,第二打孔槽和第二打孔刀在导流层上形成向下凹陷的压孔,压孔设于导流槽之间;
所述第一热压辊机构包括第一热压辊、第二热压辊、驱动第一热压辊和第二热压辊转动的热压电机,第一热压辊两侧设有第一凸条和多个第一打孔槽,第一凸条环布于第一热压辊上,第二热压辊上设有与第一凸条对应的第一凹槽和与多个第一打孔槽对应的第一打孔刀;第一热压辊中部设有多个向上凸起的第二凸部和多个第二打孔槽,第二凸部密布于第一热压辊中部;第二热压辊中部设有多个与第二凸部对应的第二凹槽和与多个与第二打孔槽对应的第二打孔刀;
(2)复合:将导流层、纤维层、吸收芯层、不透液性底层由上而下通过复合辊复合;
(3)切割:将复合后的材料进行翻折、切割,形成片状的纸尿裤本体。
进一步的:
纸尿裤通过驱动机构输送,系统设定驱动机构的线速度为V0,驱动机构设有驱动辊,驱动辊的半径为R0,纤维层通过纤维辊放卷,纤维辊通过旋转电机旋转,纤维辊上设有测量纤维层实时半径的距离检测装置,纤维层的实时半径为R1,纤维辊放卷纤维层的实时线速度为V1=f1*R1*V0/R0,f1为纤维辊速度调节系数,纤维层经过第一压力测量机构,第一压力测量机构包括辊座、可转动地设于辊座的测量辊、连接于辊座的压力传感器,纤维层经过测量辊,压力传感器测量的实时数值为F1,系统设定压力传感器的最大值为Fmax,系统设定压力传感器的最小值为Fmin,F1、Fmax、Fmin均为已扣除测量辊重量后的数值,f1的计算方法如下:
当Fmax≥F1≥Fmin时,f1=1;当(5/3)*Fmax≥F1>Fmax时,f1=1+ (2F1-Fmax-Fmin)/(2*a*Fmax),直到F1=(Fmax+Fmin)/2时,f1=1;当2Fmax ≥F1>(5/3)*Fmax时,f1=1+(2F1-Fmax-Fmin)/(a*Fmax),当F1=(5/3) *Fmax时,f1=1+(2F1-Fmax-Fmin)/(2*a*Fmax),直到F1=(Fmax+Fmin)/2 时,f1=1;a为系统设定的速度变化系数,a为正整数,当F1>2Fmax时,系统报警设备停止运行。
当Fmin>F1≥(1/3)Fmin时,f1=1+(2F1-Fmax-Fmin)/(2*a*Fmin),直到F1=(Fmax+Fmin)/2时,f1=1;当(1/3)Fmin>F1≥(1/10)Fmin时, f1=1+(2F1-Fmax-Fmin)/(a*Fmin),直到f1=(1/3)Fmin,f1=1+(2F1-Fmax-Fmin) /(2*a*Fmin),直到F1=(Fmax+Fmin)/2时,f1=1;当(1/10)Fmin>F1时,系统报警设备停止运行。
吸收芯层经过高分子机构成型,高分子机构包括模轮、驱动模轮转动的模轮电机,模轮的系统设定的线速度也为VO,模轮实际线速度V2=f2*V0,V2也为吸收芯层出模轮的速度,f2为模轮速度调节系数,复合前,吸收芯层经过第二压力测量机构,第二压力测量机构的结构与第一压力测量机构的结构相同,V2的调节方法与V1的调节方法相同,系统设定第二压力测量机构的压力传感器的最大值小于第一压力测量机构的压力传感器的最大值Fmax。
第一压力测量机构还包括两个可转动的固定辊,两个固定辊位于同一水平面,两个固定辊与测量辊形成一等腰直角三角形,压力传感器测出的值F1为纤维层的张紧力。
所述第一打孔刀和所述第二打孔刀均为漏斗结构,所述第一打孔槽和所述第二打孔槽均为漏斗结构,所述第一打孔刀插入所述第一打孔槽后,同一横切面第一打孔刀的孔径小于第一打孔槽的孔径;所述第一热压辊中部为中空形成一吸附腔,所述第一热压辊连接于联轴器,所述联轴器连接一吸附装置,所述第一打孔槽端部为小孔,所述第一打孔刀的端部插入小孔延伸至吸附腔内,所述第二打孔刀与所述第二打孔槽的结构与第一打孔刀和第一打孔槽结构相同。
所述联轴器上固定一内管,所述内管外壁与所述第一热压辊内壁之间存在间隙,该间隙为1mm至10mm,所述内管顶部设有一吸附口,所述吸附口位于第一热压辊和第二热压辊连接处的正下方。
所述纤维层中部设有多个向上凸起的圆弧凸部,所述圆弧凸部等距紧密排列于纤维层顶部,所述圆弧凸部之间形成导流通道。
所述纤维层上设有多个通孔,所述通孔位于导流通道上。
所述圆弧凸部为弧面结构。
通过采用前述技术方案,本发明的有益效果是:
本发明采用纤维层代替透液无纺布顶层和绒毛浆纸层,纤维层纤维之间的间隔大,颗粒状的便便容易进入和穿过纤维层内,即使是颗粒较大的便便也容易下渗,纤维层对尿液和便液也具有一定的吸收的作用,提高了纸尿裤的下渗和吸收的效果,且纤维层具有一定的缓冲性,使得穿戴舒适;导流层两侧的导流条具有阻隔尿液和便液的作用,防漏孔可提高液体的下渗速度,且较大的颗粒状的便便也容易从防漏孔下落,导流条向上凸起,防漏孔向下凹陷,使得导流层两侧更具有层次感,增加了导流层两侧对液体的缓存空间,向下凹陷的结构有利于导流层上的液体便液往防漏孔和压孔方向流动;导流层中部密布第一凸部,第一凸部可增大导流层顶部的表面积,增加导流面积,有利于液体流到导流槽内的压孔,压孔向下凹陷,使得导流层中部更具有层次感,增加了导流层中部对液体的缓存空间,较大颗粒的便便可通过压孔下渗,提高了导流层的下渗能力;导流层只需通过第一热压辊机构后,即可形成防漏孔、导流条、压孔、第一凸部,一次成型,缩短了生产的流水线,降低了生产成本,提高了生产效率;进一步的,由于纤维层具有拉伸性,在复合过程中,若纤维层的拉伸较大时,纤维层的张紧力大于Fmax时,片状的纸尿裤本体成型后,使得片状的纸尿裤本体的纤维层的量偏小,纤维层会给整个纸尿裤向内缩回的作用力,纸尿裤各层复合后相互作用,有可能导致导流条、导流槽、第一凸部、防漏孔、压孔、通孔、圆弧凸部发生形变,影响纸尿裤的导流和下渗的效果,影响了纸尿裤的质量,因此,纤维层应在标准的张紧力范围内进行复合,即Fmax≥F1≥ Fmin时,才能提高纸尿裤的质量;当F1的值偏离较小时,即(5/3)*Fmax≥F1>Fmax 时,f1=1+(2F1-Fmax-Fmin)/(2*a*Fmax),此时,f1变化调节的速度较慢,当F1的值偏离较大时,即2Fmax≥F1>(5/3)*Fmax时,f1=1+(2F1-Fmax-Fmin) /(a*Fmax),此时,f1变化调节的速度较快,同时,调节过程中,f1的值也是实时变化的,随着F1的减小,f1的值随之减小,这种阶梯式调节方式,可防止速度调节变化过大,使得纤维层张紧力调节平稳,防止速度V1调节过小难以调节到正常范围内或调节过度,防止了系统的不稳定,当F1>2Fmax时,系统报警设备停止运行,防止纤维层张紧度过大导致纤维层的断裂;进一步的,若纤维层复合时的张紧力较小时,即F1小于Fmin值,片状的纸尿裤成型后,纤维层的量较多,增加了生产的成本,也采用阶梯式调节方式,使得调节更加稳定,当(1/10)Fmin>F1时,系统报警设备停止运行,防止F1过小,导致纤维层发生褶皱、翻折;进一步的,吸收芯层输送过程中,其张紧力也会影响到复合后纸尿裤的质量,因此,采用上述方法进行调节,由于吸收芯层可承受最大拉伸强度小于纤维层可承受最大拉伸强度,因此,系统设定第二压力测量机构的压力传感器的最大值小于第一压力测量机构的压力传感器的最大值Fmax,使得纤维层和吸收芯层在标准张紧力的范围内复合,提高了纸尿裤的质量;进一步的,两个固定辊与测量辊形成一等腰直角三角形,压力传感器测出的值F1为纤维层的张紧力,便于系统的计算,提高了调节的效率,降低系统出现故障;进一步的,打孔时,有可能切割成小碎片,小碎片通过小孔进入吸附腔,吸附装置将小碎片吸附,防止切割后的小碎片残留于第一打孔槽和第二打孔槽,影响压孔和防漏孔的形成,同时,也防止小碎片掉落至设备上导致设备的损坏,第一打孔刀的端部插入小孔延伸至吸附腔内,有利于将小碎片插入吸附腔内,同一横切面第一打孔刀的孔径小于第一打孔槽的孔径,防止第一打孔刀与第一打孔槽之间发生摩擦;进一步的,防漏孔和压孔为漏斗结构,颗粒状的便便进入防漏孔和压孔后,防漏孔和压孔对其有一定的作用力,使得颗粒状的便便只能单向下渗,难以返回导流层顶部,具有很好的防漏作用,且大大提高了导流层的下渗速度;进一步的,纤维层的圆弧凸部和通孔的设置,提高了纤维层的下渗导流效率,简单实用。
附图说明
图1是纸尿裤的结构示意图;
图2是导流条和防漏孔的局部放大图;
图3是导流条和防漏孔的局部;
图4是第一凸部和压孔的局部放大图;
图5是第一凸部和压孔的局部剖视图;
图6是纤维层的局部剖视图;
图7是纤维层的局部俯视图;
图8是本发明纸尿裤生产工艺的结构简图;
图9是第一热压辊机构的结构简图;
图10是第一热压辊的局部剖视简图;
图11是第一压力测量机构的结构简图。
具体实施方式
现结合附图和具体实施方式对本发明进一步说明。
参考图1至图11,本实施例提供一种下渗性好的纸尿裤生产方法,包括以下方法:
(1)制造导流层1:导流层1输送过程中,经过第一热压辊机构5,第一热压辊机构的第一凸条和第一凹槽在导流层顶部两侧形成多个向上凸起的导流条11,第一打孔刀和第一打孔槽在导流层顶部两侧形成多个向下凹陷的防漏孔 12,第二凸部和第二凹槽在导流层上形成多个第一凸部13,第一凸部密布于导流层中部,多个第一凸部之间形成导流槽10,第二打孔槽和第二打孔刀在导流层上形成向下凹陷的压孔14,压孔设于导流槽之间;形成压孔和防漏孔时,第一打孔刀和第二打孔刀有可能切割成小碎片,小碎片通过小孔进入吸附腔,吸附装置将小碎片吸附;
所述第一热压辊机构包括第一热压辊51、第二热压辊52、驱动第一热压辊和第二热压辊转动的热压电机53,第一热压辊两侧设有第一凸条和多个第一打孔槽,第一凸条环布于第一热压辊上,第二热压辊上设有与第一凸条对应的第一凹槽和与多个第一打孔槽对应的第一打孔刀;第一热压辊中部设有多个向上凸起的第二凸部和多个第二打孔槽,第二凸部密布于第一热压辊中部;第二热压辊中部设有多个与第二凸部对应的第二凹槽和与多个与第二打孔槽对应的第二打孔刀;
所述第一打孔刀和所述第二打孔刀均为漏斗结构,所述第一打孔槽和所述第二打孔槽均为漏斗结构,所述第一打孔刀插入所述第一打孔槽后,同一横切面第一打孔刀的孔径小于第一打孔槽的孔径;所述第一热压辊中部为中空形成一吸附腔510,所述第一热压辊连接于联轴器54,所述联轴器连接一吸附装置55,所述第一打孔槽端部为小孔,所述第一打孔刀的端部插入小孔延伸至吸附腔内,所述第二打孔刀与所述第二打孔槽的结构与第一打孔刀和第一打孔槽结构相同;
所述联轴器上固定一内管56,所述内管外壁与所述第一热压辊内壁之间存在间隙,该间隙为1mm至10mm,所述内管顶部设有一吸附口560,所述吸附口位于第一热压辊和第二热压辊连接处的正下方。
(2)纸尿裤通过驱动机构61输送,系统设定驱动机构的线速度为V0,驱动机构设有驱动辊,驱动辊的半径为R0,纤维层通过纤维辊62放卷,纤维辊通过旋转电机旋转,纤维辊上设有测量纤维层实时半径的距离检测装置,纤维层的实时半径为R1,纤维辊放卷纤维层的实时线速度为V1=f1*R1*V0/R0,f1为纤维辊速度调节系数,纤维层经过第一压力测量机构7,第一压力测量机构包括两个可转动的固定辊71、辊座72、可转动地设于辊座的测量辊73、连接于辊座的压力传感器74,两个固定辊位于同一水平面,两个固定辊与测量辊形成一等腰直角三角形,压力传感器测出的值F1为纤维层的张紧力,纤维层经过测量辊,压力传感器测量的实时数值为F1,系统设定压力传感器的最大值为Fmax,系统设定压力传感器的最小值为Fmin,F1、Fmax、Fmin均为已扣除测量辊重量后的数值,f1的计算方法如下:
当Fmax≥F1≥Fmin时,f1=1;当(5/3)*Fmax≥F1>Fmax时,f1=1+ (2F1-Fmax-Fmin)/(2*a*Fmax),直到F1=(Fmax+Fmin)/2时,f1=1;当2Fmax ≥F1>(5/3)*Fmax时,f1=1+(2F1-Fmax-Fmin)/(a*Fmax),当F1=(5/3) *Fmax时,f1=1+(2F1-Fmax-Fmin)/(2*a*Fmax),直到F1=(Fmax+Fmin)/2 时,f1=1;a为系统设定的速度变化系数,a为正整数,当F1>2Fmax时,系统报警设备停止运行。
当Fmin>F1≥(1/3)Fmin时,f1=1+(2F1-Fmax-Fmin)/(2*a*Fmin),直到F1=(Fmax+Fmin)/2时,f1=1;当(1/3)Fmin>F1≥(1/10)Fmin时, f1=1+(2F1-Fmax-Fmin)/(a*Fmin),直到f1=(1/3)Fmin,f1=1+(2F1-Fmax-Fmin) /(2*a*Fmin),直到F1=(Fmax+Fmin)/2时,f1=1;当(1/10)Fmin>F1时,系统报警设备停止运行。
(3)吸收芯层经过高分子机构63成型,高分子机构包括模轮、驱动模轮转动的模轮电机,模轮的系统设定的线速度也为VO,模轮实际线速度 V2=f2*V0,V2也为吸收芯层出模轮的速度,f2为模轮速度调节系数,复合前,吸收芯层经过第二压力测量机构8,第二压力测量机构的结构与第一压力测量机构的结构相同,V2的调节方法与V1的调节方法相同,系统设定第二压力测量机构的压力传感器的最大值小于第一压力测量机构的压力传感器的最大值Fmax;
(4)复合:将导流层1、纤维层2、吸收芯层3、不透液性底层4由上而下通过复合辊64复合;
(5)切割:将复合后的材料进行翻折、切割,形成片状的纸尿裤本体。
所述纤维层2中部设有多个向上凸起的圆弧凸部21,所述圆弧凸部等距紧密排列于纤维层顶部,所述圆弧凸部之间形成导流通道22,所述纤维层上设有多个通孔23,所述通孔位于导流通道上,所述圆弧凸部为弧面结构。
上述纤维层也可不设置圆弧凸部和通孔,这种结构下渗效果较差,纤维层也可为其他结构,具体根据情况设置。
上述纤维层可采用密度较高的亲水纤维制成,如蚕丝纤维、棉纤维等,也可采用密度较高的木浆材料制成,也可采用其他纤维材料制成,具体根据情况设置。
上述系统设定的速度变化系数a通常设置为1和2,也可为其他数值,a的数值与纤维层的材质、厚度、宽度相关。
上述距离检测装置、压力传感器、吸附装置、联轴器为公知的装置,在此不再赘述。
纸尿裤进行翻折、切割为公知的工序,在此不再赘述。
上述驱动机构61、复合辊64、高分子机构63为公知的装置,在此不再赘述。
本发明可采用PLC或其他自动控制系统控制,为公知的控制系统,在此不再赘述。
尽管结合优选实施方案具体展示和介绍了本发明,但所属领域的技术人员应该明白,在不脱离所附权利要求书所限定的本发明的精神和范围内,在形式上和细节上可以对本发明做出各种变化,均为本发明的保护范围。
Claims (8)
1.一种下渗性好的纸尿裤生产方法,其特征在于:包括以下方法:
(1)制造导流层:导流层输送过程中,经过第一热压辊机构,第一热压辊机构的第一凸条和第一凹槽在导流层顶部两侧形成多个向上凸起的导流条,第一打孔刀和第一打孔槽在导流层顶部两侧形成多个向下凹陷的防漏孔,第二凸部和第二凹槽在导流层上形成多个第一凸部,第一凸部密布于导流层中部,多个第一凸部之间形成导流槽,第二打孔槽和第二打孔刀在导流层上形成向下凹陷的压孔,压孔设于导流槽之间;
所述第一热压辊机构包括第一热压辊、第二热压辊、驱动第一热压辊和第二热压辊转动的热压电机,第一热压辊两侧设有第一凸条和多个第一打孔槽,第一凸条环布于第一热压辊上,第二热压辊上设有与第一凸条对应的第一凹槽和与多个第一打孔槽对应的第一打孔刀;第一热压辊中部设有多个向上凸起的第二凸部和多个第二打孔槽,第二凸部密布于第一热压辊中部;第二热压辊中部设有多个与第二凸部对应的第二凹槽和与多个与第二打孔槽对应的第二打孔刀;
(2)复合:将导流层、纤维层、吸收芯层、不透液性底层由上而下通过复合辊复合;
纸尿裤通过驱动机构输送,系统设定驱动机构的线速度为V0,驱动机构设有驱动辊,驱动辊的半径为R0,纤维层通过纤维辊放卷,纤维辊通过旋转电机旋转,纤维辊上设有测量纤维层实时半径的距离检测装置,纤维层的实时半径为R1,纤维辊放卷纤维层的实时线速度为V1=f1*R1*V0/R0,f1为纤维辊速度调节系数,纤维层经过第一压力测量机构,第一压力测量机构包括辊座、可转动地设于辊座的测量辊、连接于辊座的压力传感器,纤维层经过测量辊,压力传感器测量的实时数值为F1,系统设定压力传感器的最大值为Fmax,系统设定压力传感器的最小值为Fmin,F1、Fmax、Fmin均为已扣除测量辊重量后的数值,f1的计算方法如下:
当Fmax≥F1≥Fmin时,f1=1;当(5/3)*Fmax≥F1>Fmax时,f1=1+(2F1-Fmax-Fmin)/(2*a*Fmax),直到F1=(Fmax+Fmin)/2时,f1=1;当2Fmax≥F1>(5/3)*Fmax时,f1=1+(2F1-Fmax-Fmin)/(a*Fmax),当F1=(5/3)*Fmax时,f1=1+(2F1-Fmax-Fmin)/(2*a*Fmax),直到F1=(Fmax+Fmin)/2时,f1=1;a为系统设定的速度变化系数,a为正整数,当F1>2Fmax时,系统报警设备停止运行;
当Fmin>F1≥(1/3)Fmin时,f1=1+(2F1-Fmax-Fmin)/(2*a*Fmin),直到F1=(Fmax+Fmin )/2时,f1=1;当(1/3)Fmin>F1≥(1/10)Fmin时,f1=1+(2F1-Fmax-Fmin)/(a*Fmin),直到f1=(1/3)Fmin,f1=1+(2F1-Fmax-Fmin)/(2*a*Fmin),直到F1=(Fmax+Fmin )/2时,f1=1;当(1/10)Fmin>F1时,系统报警设备停止运行;
(3)切割:将复合后的材料进行翻折、切割,形成片状的纸尿裤本体。
2.根据权利要求1所述的一种下渗性好的纸尿裤生产方法,其特征在于:吸收芯层经过高分子机构成型,高分子机构包括模轮、驱动模轮转动的模轮电机,模轮的系统设定的线速度也为VO,模轮实际线速度V2=f2*V0,V2也为吸收芯层出模轮的速度,f2为模轮速度调节系数,复合前,吸收芯层经过第二压力测量机构,第二压力测量机构的结构与第一压力测量机构的结构相同,V2的调节方法与V1的调节方法相同,系统设定第二压力测量机构的压力传感器的最大值小于第一压力测量机构的压力传感器的最大值Fmax。
3.根据权利要求1所述的一种下渗性好的纸尿裤生产方法,其特征在于:第一压力测量机构还包括两个可转动的固定辊,两个固定辊位于同一水平面,两个固定辊与测量辊形成一等腰直角三角形,压力传感器测出的值F1为纤维层的张紧力。
4.根据权利要求1所述的一种下渗性好的纸尿裤生产方法,其特征在于:所述第一打孔刀和所述第二打孔刀均为漏斗结构,所述第一打孔槽和所述第二打孔槽均为漏斗结构,所述第一打孔刀插入所述第一打孔槽后,同一横切面第一打孔刀的孔径小于第一打孔槽的孔径;所述第一热压辊中部为中空形成一吸附腔,所述第一热压辊连接于联轴器,所述联轴器连接一吸附装置,所述第一打孔槽端部为小孔,所述第一打孔刀的端部插入小孔延伸至吸附腔内,所述第二打孔刀与所述第二打孔槽的结构与第一打孔刀和第一打孔槽结构相同。
5.根据权利要求4所述的一种下渗性好的纸尿裤生产方法,其特征在于:所述联轴器上固定一内管,所述内管外壁与所述第一热压辊内壁之间存在间隙,该间隙为1mm至10mm,所述内管顶部设有一吸附口,所述吸附口位于第一热压辊和第二热压辊连接处的正下方。
6.根据权利要求1至5任一权利要求所述的一种下渗性好的纸尿裤生产方法,其特征在于:所述纤维层中部设有多个向上凸起的圆弧凸部,所述圆弧凸部等距紧密排列于纤维层顶部,所述圆弧凸部之间形成导流通道。
7.根据权利要求6所述的一种下渗性好的纸尿裤生产方法,其特征在于:所述纤维层上设有多个通孔,所述通孔位于导流通道上。
8.根据权利要求6所述的一种下渗性好的纸尿裤生产方法,其特征在于:所述圆弧凸部为弧面结构。
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