CN103180143A - 生产复合多层印刷吸收制品的方法 - Google Patents
生产复合多层印刷吸收制品的方法 Download PDFInfo
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- CN103180143A CN103180143A CN2011800506520A CN201180050652A CN103180143A CN 103180143 A CN103180143 A CN 103180143A CN 2011800506520 A CN2011800506520 A CN 2011800506520A CN 201180050652 A CN201180050652 A CN 201180050652A CN 103180143 A CN103180143 A CN 103180143A
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Abstract
一种用于生产复合多层吸收制品的方法。这些层中的至少两个层包括着色区。
Description
技术领域
本发明公开了一种用于生产具有多个层的吸收制品的方法,其中这些层中的至少一个层为复合材料。
背景技术
纤维网复合材料诸如膜和纤维质纤维网被用于吸收制品中。例如,非织造纤维网常常与聚合物膜组合,使得它们适于用作吸收制品中的材料,诸如一次性吸收尿布上的底片。在此类复合材料中,非织造部分能够提供柔软性,而膜部分能够提供流体不可渗透性。
其中非织造纤维凸穿聚合物膜的复合材料能够适用于提供吸收结构,在所述吸收结构中,非织造材料用作将流体从聚合物膜的一侧传送至另一侧的传送装置。复合材料能够被构造成使得复合材料的流体收集侧为聚合物膜,并且非织造纤维凸穿聚合物膜而到达复合材料的流体收集侧。例如,在卫生巾或尿布中,这种复合材料能够适于用作顶片,所述顶片将流体从卫生巾的面向身体的表面朝吸收芯更深入地传送到卫生巾中。如果将复合材料用于吸收制品诸如卫生巾、尿布或棉塞,则这可导致所保持的流体在复合材料的面向身体的表面上显现为污渍。经液、***分泌物、尿液和粪便的污渍可能不是吸收制品的穿着者所愿意看到的。
已使用着色区来帮助掩蔽所吸收的体液,例如被吸收制品所收集的经液或尿液。这种掩蔽所吸收的体液的能力向穿着者提供了增加的清洁感并且保护了内衣以使它们不受脏污。此外,定位在吸收制品的中心区的第二层中的着色区还向穿着者提供所期望的视觉上的深度印象。这种对吸收制品深度的感知增加了穿着者对吸收制品的吸收容量的信心,从而导致增加的如下信心:体液将被成功地吸收并储存;因此减小了脏污内衣的可能性。
然而,一直难以生产出具有所期望的着色区的吸收制品。困难之一是提供具有着色区的吸收制品的中心区,所述着色区将提供所期望的覆盖率;因为一些穿着者将延伸超过中心着色区之外的污渍图案理解为是指示吸收制品的吸收容量已经用尽。在一些吸收制品中,中心着色区可小于吸收制品的吸收容量的25%。大多数的数字印刷机均缺乏宽向喷涂区域以向中心区提供所期望的着色区宽度,尤其是如果产品是以多巷道或宽前部方式生产的话,其中两个或更多个产品同时处在生产线上。尝试了一种改进方法,将多个数字印刷机布置成并列排列的以在吸收制品的宽向上提供增加的喷涂区域。数字印刷机的这种重新排列并未提供所期望的结果。该并列排列增加了数字印刷机的成本,并且还降低了该印刷方法的可靠性。如果宽度方向上的这些联接的印刷头之一失效了,则生产线就要停止。图像品质也不保险,因为所述多个数字印刷机必须协调一致以生产出在纵向上不明显偏移的着色区。由于着色区处在或靠近吸收制品表面,任何误差均会快速地被穿着者注意到,从而减小了或消除了着色区所提供的有益效果。
另一种旨在提供具有所期望的覆盖面积的着色区的尝试使用了接触印刷方法,诸如柔性版印刷法。接触印刷法在传统上一直是一种用以在吸收制品上印刷大图案或宽图案的经济型方法,具有可再现的结果。然而,接触印刷法可导致较高的初始费用,因为必须制造特定的图案辊、板或丝网。由于定制制造的缘故,对印刷图案的后续改变可能要求制造新的设备并且可能限制因特定要求或有限生产条件而需快速改变印刷图案的经济可行性。另一个问题是,接触印刷法不能够同样良好地用于所有基底。例如,为了产生视觉深度感,中心部分将被印刷以产生中心着色区。然而,为了产生视觉深度感,表面层(顶层)下面的层被印刷以产生中心着色区。一般来讲,表面层下面的层包括“多尘的”或“松散的”非织造的或含纤维素的材料纤维网,它们是不能够使用接触方法来印刷的,因为所述松散的纤维粘着到印刷板上而导致印刷得太轻微或印刷不上。
在另一种旨在为吸收制品提供所期望的着色区的尝试中,在生产吸收制品的过程中使用了多种印刷方法。这些多种印刷方法具有多个缺点。在一种方法中,在单一层上印刷多次。然而,在吸收制品的单一层上印刷多次并不能提供在多个层上印刷所提供的深度感。另一种方法涉及在吸收制品的多个层(在使它们彼此接触之后)上进行印刷。这减小了能够被印刷的表面,从而将印刷的纤维网限制为彼此接触的,因此失去了深度感。一种附加的方法使用预印刷的材料卷来生产吸收制品。然而,由于供应链的复杂性以及预印刷的卷材图像的限制而导致的产品废料增加,预印刷的卷材增加了吸收制品的成本。
因此,需要一种生产如下吸收制品的方法,所述吸收制品在多个层上具有着色区,所述多个层之一为复合材料层,使得这些着色区提供视觉深度感和足够的覆盖率以至少部分地掩蔽被吸收的体液。
发明内容
本发明提供了一种生产多层吸收制品的方法,所述吸收制品具有两个或更多个着色区。该方法包括以下步骤:提供吸收制品转换加工生产线;提供第一前体纤维网给转换加工生产线;使用接触印刷法在接触印刷工位将第一着色区印刷到第一前体纤维网上;提供第二前体纤维网给转换加工生产线;从第一和第二前体纤维网生产出复合基底;提供下层基底给转换加工生产线;使用非接触印刷法在非接触印刷工位将第二着色区印刷到下层基底上;并且组合具有第一着色区的复合基底与具有第二着色区的下层基底以生产出吸收制品。
本发明提供了一种生产多层吸收制品的方法,所述吸收制品具有两个或更多个着色区。该方法包括以下步骤:提供吸收制品转换加工生产线;提供前体膜纤维网给转换加工生产线;使用接触印刷法在接触印刷工位将第一着色区印刷到前体膜纤维网上;提供前体非织造纤维网给转换加工生产线;从前体膜纤维网和前体非织造纤维网生产出复合基底;提供非织造材料纤维网;使用非接触印刷法在非接触印刷工位将第二着色区印刷到非织造材料纤维网上;将复合基底切割成各个片材;将非织造材料纤维网切割成各个片材;并且组合单个复合基底片材和单个非织造材料片材以生产出吸收制品。
附图说明
图1为本发明的一个实施例的示意图。
图2为本发明的柔性版印刷方法的示意图。
图3为本发明的照相凹版印刷方法的示意图。
图4为用于本发明的组合设备的透视图。
图5为复合基底的透视图。
图6为图5所示复合基底的一部分的放大视图。
图7为吸收制品的示意图。
图8为图7所示吸收制品的横截面。
图9为图7的吸收制品的下层基底的示意图。
图10为图7的吸收制品的复合基底的示意图。
具体实施方式
本发明涉及一种在转换加工生产线上生产印刷的多层吸收制品的方法。将第一前体纤维网提供给转换加工生产线并且使用如下接触印刷方法将其印刷上第一着色区:例如,柔性版印刷法、卷筒纸凹版印刷法、橡皮版印刷法、平板印刷法、丝网印刷法等。然后将第一前体与第二前体纤维网组合起来以形成复合基底,诸如顶片。也将下层基底诸如非织造材料或纤维素基第二顶片提供给转换加工生产线并且使用如下非接触印刷方法将其印刷上第二着色区:例如,蜡喷印法、喷墨印刷法、磁泡喷印法、激光喷印法等。在这些印刷步骤之后,在生产吸收制品诸如女性卫生巾的过程中将复合基底和下层基底组合起来。
如本文所用,术语“转换加工生产线”是指用来制备吸收制品的制造线。转换加工生产线的目的是利用原材料、方法和它们的组合来生产吸收制品。转换加工生产线包括用于生产吸收制品的各种单元操作。单元操作的范围可为简单动作诸如原材料传送(退绕、计量、重新定位等)至复杂的材料转化(熔融、切割、拉伸、流体施用(墨、乳液、粘合剂)等)。在转换加工生产线中,许多单元操作是并行发生以及依次发生的以生产出吸收制品。
如本文所用,术语“印刷”(print)或“印刷”(printing)是指在基底上产生着色区。在很多情况下,印刷涉及通过将墨、蜡、漆料等形式的颜料、着色剂或增白剂转移到基底上来形成着色区。所印刷的着色区是人眼可见的并且可包括例如形状、图案、设计、物体、真实或虚构人物的肖像等、或它们的组合。印刷方法的例子包括接触印刷法和非接触印刷法。接触印刷法包括将颜料从印刷辊、板或丝网上直接转移到基底上。在非接触印刷方法中,印刷设备不直接接触基底,例如当通过喷墨印刷机、蜡喷印机、磁泡印刷机、激光喷印机等或它们的组合来进行印刷时就是如此。
如本文所用,术语“基底”是指能够移动穿过转换加工生产线的材料纤维网。基底可包括邻接的材料,其中各个材料单元连接或直接接合到紧接在前的和后随的材料单元上。例如,基底可包括织造材料、非织造材料、膜等或它们的组合的连续纤维网。基底也可包括各种制造阶段中互连的吸收制品。基底也可包括被空间或其他材料隔开的离散材料单元的纤维网。例如,基底可包括经由一个或多个传送带或本领域已知的其他传送装置移动穿过转换加工生产线的离散的吸收制品。
如本文所用,短语“吸收制品”是指吸收和容纳包括体液在内的流体的装置。更具体地,是指可紧贴或靠近皮肤放置以吸收和容纳从身体排出的所述各种流体的装置。在典型的使用中,吸收制品在单次使用之后不旨在被洗涤或换句话讲复原或再使用。吸收制品的例子包括但不限于薄页卫生纸产品,例如面巾纸、卫生纸、纸巾、擦拭物;家庭护理产品,例如清洁擦拭物,诸如(The Procter&Gamble Company,Cinc.,OH);美容护理产品诸如擦拭物和清洁垫;女性卫生产品,例如卫生巾、卫生护垫、棉塞、***间装置等;婴儿尿布;儿童训练裤;成人失禁产品。可在复合基底上设置有第一着色区且在下层基底上设置有第二着色区的卫生护垫和卫生巾的非限制性例子包括由The Procter&Gamble Company(Cincinnati,Ohio)制造的那些,诸如ALWAYS ULTRA、ALWAYSINFINITY、和ALWAYS卫生护垫。吸收制品诸如公开于美国专利4,324,246、4,463,045、6,004,893、4,342,314、4,463,045、4,556,146、4,589,876、4,687,478、4,950,264、5,009,653、5,267,992、和Re.32,649也被认为是可受益于第一和第二着色区的吸收制品。
吸收制品以及它们的各个组件诸如液体可透过的顶片、第二顶片、吸收芯、和液体基本上不可透过的底片具有面向身体的表面和面向衣服的表面。如本文所用,“面向身体的表面”是指制品或组件在常规使用时旨在朝穿着者身体设置或邻近穿着者身体放置的表面;而“面向衣服的表面”位于相对侧,并且在常规使用时旨在背离穿着者的身体设置的表面。当吸收制品被穿着时,面向衣服的表面可被布置成面朝穿着者的内衣或邻近穿着者的内衣放置。一般来讲,顶片是让旨在由吸收制品保持或储存的液体能够可操作地渗透的,并且底片为所述预期的液体基本上不可渗透的或换句话讲可操作地不可渗透的。吸收制品也可包括组件,诸如液体芯吸层、液体分配层、阻挡层等、以及它们的组合。
如本文所称,术语“颜色”包括任何基色,例如白色、黑色、红色、蓝色、紫色、橙色、黄色、绿色、和靛色、以及它们的任何变化或它们的混合。术语‘非彩色’或‘非着色的’是指白色,它被进一步定义为L*值为至少80、a*值等于0±2、并且b*值等于0±2的那些颜色。
该方法的一个实施例示出于图1中,该图示出了根据本发明的方法的转换加工生产线100的示意图,其中第一前体纤维网101被提供给转换加工生产线100内的接触印刷工位103。接触印刷工位103在第一前体纤维网101上印刷至少一个第一着色区。然后在转换加工生产线100内的组合设备250处将第一前体纤维网101与第二前体纤维网102组合起来以形成复合基底270。下层基底141也被提供给转换加工生产线100内的非接触印刷工位143。非接触印刷工位143在下层基底141上印刷至少一个第二着色区。第一前体纤维网101、第二前体纤维网102、和下层基底141可同时被提供给转换加工生产线100。
参见图1,本发明的方法可具有在纵向上延伸的纵向(MD)、和在横向上延伸的横向(CD)。纵向为某个特定基底沿转换加工生产线传送并通过特定位置的方向。横向大致位于被传送穿过转换加工生产线的基底的平面内,并且对齐成垂直于纵向。
在一个实施例中,在第一前体纤维网101上印刷第一着色区的接触印刷工位103可包括柔性版印刷方法105,如图2所示。柔性版印刷方法105可使用任何已知的柔性版印刷设备和装置,包括本领域已知的加工装置。如图所示,包括刮墨刀的室109中提供墨107,并且所述室与网纹辊111成可操作关系,随着网纹辊111在所示方向上旋转,源自室109的墨107以均匀的方式被转移到所述网纹辊上。网纹辊111与滚板机113成可操作关系,使得在转移辊隙115处,墨107从网纹辊111被转移到滚板机113上。滚板机113以如下图案从网纹辊111获取墨107,所述图案对应于印刷在第一前体纤维网101上的第一着色区。将第一前体纤维网101(要在其上印刷第一着色区)喂送到中心压印转筒117上(以任何常规方式),所述压印转筒在图2所示的方向上旋转。
当第一前体纤维网101进入到由滚板机113的表面和中心压印辊117的表面的操作关系所形成的印刷辊隙119中时,滚板机113的表面上的墨107接触并被转移到第一前体纤维网101上。
针对所述柔性版印刷方法的供选择的替代方案也能够用于本发明的接触印刷工位。例如,在某些实施例中,接触印刷工位可包括照相凹版印刷方法131,如图3所示。在照相凹版印刷方法131中,使第一前体纤维网101在橡胶压印辊132和照相凹版印刷滚筒133之间经过。照相凹版印刷滚筒133的表面包含大量孔室134,所述孔室被设计成容纳、保持并向第一前体纤维网101上转移墨。在辊隙137的下游将墨135施加到照相凹版印刷滚筒133的表面上,并且用刮墨刀138从照相凹版印刷滚筒133的着陆区域上移除。当第一前体纤维网101进入到辊隙137中时,其被橡胶压印辊132向照相凹版印刷滚筒133顶压,从而允许墨135从照相凹版印刷滚筒孔室134中转移并以小的着色区或增亮区域139被沉积在基底101的表面上,所述区域对应于所述各个照相凹版印刷滚筒孔室134。
如图1和4所示,在接触印刷之后,使第一前体纤维网101和第二前体纤维网102在MD上移动至组合设备250的反转互锁辊252,254的辊隙256。可通过织物处理领域中已知的方法使前体纤维网101,102保持足够的纤维网张力以便以大致平坦的状态进入到辊隙256中。随着每个前体纤维网101,102穿过辊隙256,图案辊254的齿260与非图案凹槽辊252的凹槽258互锁以将第二前体纤维网102的一些部分挤出第二前体纤维网102的平面外并且穿过第一前体纤维网101的平面以形成簇262。齿260将第二前体纤维网102的纤维“推过”或“冲过”第一前体纤维网101的平面。
如图4所示,在某些实施例中,组合设备250包括一对互锁辊252,254,它们各自围绕轴线A旋转,这些轴线A是在相同的平面中基本平行的。非图案凹槽辊252包括多个脊263和对应的凹槽264,所述凹槽围绕非图案凹槽辊252的整个周围不间断地延伸。图案辊254包括形成图案的多排环向间隔开的齿260,这些齿在图案辊254的至少一部分上延伸。各排齿260被对应的凹槽258隔开。在操作中,非图案凹槽辊252和图案辊254互锁使得非图案凹槽辊252的脊263延伸到图案辊254的凹槽258中;并且图案辊254的齿260延伸到非图案凹槽辊252的凹槽264中。非图案凹槽辊252、图案辊254或它们两者均能够通过本领域已知的方法加热,诸如通过使用热油填充辊或电加热辊来加热。
图4示出组合设备250为一个图案辊254和一个非图案凹槽辊252的构型。然而,在某些实施例中,可使用两个图案辊254,每个图案辊254在相应辊的相同或不同的对应区域中具有相同或不同的齿260的图案。这种组合设备能够生产出具有簇262的纤维网,所述簇从复合基底270的双侧突出。在某些实施例中,图案辊254的齿260对应于印刷在第一前体纤维网101上的着色区,使得在复合基底270中产生的簇262对应于印刷在复合基底270上的第一着色区。第一着色区帮助掩蔽由复合基底270的第二前体纤维网102所吸收的流体。
图5示出了复合基底270,其包括大致平面的二维前体纤维网,诸如第二前体纤维网102和第一前体纤维网101。第二前体纤维网102可为纤维质非织造网,并且第一前体纤维网101可为聚合物膜。前体纤维网101,102(和任何附加纤维网)能够通过粘合剂、热粘结、超声波粘结等来接合。如上所公开,复合基底270的前体纤维网101,102能够通过形成簇262的缠结的机械接合来接合。图6以进一步放大的视图示出了用于图5所示复合基底270的实施例的代表性簇262。簇可为与纤维网成一整体且处在纤维网的平面外的多个凸起的纤维环或纤维堆,所述环或堆从所述纤维网伸出。
复合基底270具有第一侧面272和第二侧面274,术语“侧面”用在大致平面的二维纤维网(诸如当处于基本平坦状态时具有两个侧面的纸和膜)的常见用法中。每个前体纤维网101,102均分别具有第一表面276和278,并且分别具有第二表面280和282(示出于图5中)。第一表面276和278可为面向身体的表面,并且第二表面280和282可为面向衣服的表面。复合基底270具有纵向(MD)、横向(CD)、和平面外Z方向,如纤维网制造领域已知的那样。
在一个实施例中,复合基底270的第一侧面272由第一前体纤维网101的第一表面276的暴露部分和至少一个,但在某些实施例中多个离散的簇262限定,所述簇为非织造第二前体纤维网102的纤维的整体伸出部。如图6所示,每个簇262均可包括延伸穿过第一前体纤维网101的第一表面276并从其第一表面276向外伸出的多个对齐的环状纤维284。
第二前体纤维网102可为纤维质织造或非织造纤维网,其所包括的纤维具有足够的伸长特性以使其一些部分形成簇。例如,在某些实施例中,第二前体纤维网102可为纤维质织造或非织造纤维网,其包括弹性或弹性体纤维,例如天然纤维诸如木纤维或棉纤维;合成纤维诸如聚合物纤维-例如聚酯、聚丙烯或聚乙烯纤维;或源自天然纤维和合成纤维的组合。弹性纤维或弹性体纤维可以被拉伸其原始尺寸的至少约50%并且可以恢复到其原始尺寸的10%以内。如果纤维在非织造材料中由于纤维的移动性被简单转移,或者如果纤维被拉伸超过它们的弹性极限并塑性变形,毛簇262可由上述弹性纤维形成。在某些实施例中,通过在第二前体纤维网102的离散的局部部分将纤维在Z方向上移出平面外来形成簇。移出平面外可由于纤维位移的缘故,即,所述纤维能够相对于其他纤维移动并且被“拉出”平面外。然而,在某些实施例中,非织造第二前体纤维网102的纤维至少部分地被拉伸出平面外并且永久地变形以产生簇262。因此,在一个实施例中,根椐所期望的簇262的高度,非织造物第二前体纤维网102的组分纤维能够表现出至少约5%,至少约10%,至少约25%,至少约50%,或至少约100%的断裂伸长率。断裂伸长率能够通过简单的拉伸测试来确定,诸如通过使用Instron拉伸测试设备来确定,并且一般能够在来自此类纤维或纤维网的供应商的材料数据表中找到。
第一前体纤维网101可为聚合物膜纤维网,其具有足够的完整性以通过上述方法被成形为复合材料,例如开孔成形热塑性膜、开孔塑性膜、液压成形热塑性膜、和蜂窝状热塑性膜。在某些实施例中,第一前体纤维网101可相对于第二前体纤维网102具有足够较小的伸长特性,使得在由于第二前体纤维网102在第一前体纤维网101的方向上被移出平面外而经历纤维应变时,第一前体纤维网101将破裂,例如通过归因于延展失效的撕裂而破裂,使得第二前体纤维网102的部分能够延伸穿过第一前体纤维网101的第一表面276的平面以在复合基底270的第一侧面272上形成簇262,并且顶盖287将保留在每个簇262的远端部分上。
如图5和6所示,簇262在第一前体纤维网101中的开口286的上方延伸。开口286是通过用上述方法使第一前体纤维网101局部破裂来形成的。破裂可涉及简单地使第一前体纤维网101裂开,使得第一前体纤维网101的一部分或多部分能够偏转或移出平面外(第一前体纤维网101的平面)以形成本文称作顶盖287的顶盖结构。顶盖287为第一前体纤维网101(其可为聚合物膜)的整体伸出部。顶盖287的形式和结构可取决于第一前体纤维网101的材料特性。在某些实施例中,簇262各自的远端部分288的至少一部分被顶盖287覆盖。顶盖287可为具有第一开口290和第二开口292的隧道形顶盖287。第一开口290包括第一前体纤维网101中的破裂位置294,并且簇262在破裂位置294的上方延伸。顶盖287通过如下方式形成:使第一前体纤维网101在至少一个破裂位置294破裂,并且将聚合物膜拉伸出第一前体纤维网101的第一表面276的平面外,从而形成开口诸如第一开口290或第一开口290和第二开口292。破裂位置294能够限定开口286的边界的至少一部分。第一前体纤维网101在不存在破裂294的情况下可为流体不可透过的。
如图1所示,在本发明的方法中,转换加工生产线100也包括非接触印刷工位143。非接触印刷工位143可使用非接触方法在下层基底上印刷至少一个第二着色区。在一个实施例中,非接触印刷工位143可包括喷墨方法。在该实施例中,非接触印刷工位143包括喷墨印刷工位,所述工位能够在下层基底141诸如用作第二顶片的非织造纤维网或纤维素基纤维网上印刷着色区。下层基底141能够通过任何合适的方法被提供给非接触印刷工位143;例如,如图1所示,通过使用第一计量装置145(例如ω辊或s包裹装置)、一系列惰辊147和149、和第二计量装置151(例如真空传送装置)。计量装置145和151均在下层基底141中产生所期望的张力,并且以所期望的线速度V在纵向MD上移动下层基底141,所述线速度能够高达约10米/秒或甚至更高。然而,本发明可按下层基底的任何其他线速度V来应用,例如,至少5米/秒,至少4米/秒,至少3米/秒,至少2米/秒、以及更低的速度(这发生在转换加工生产线的启动期间,这时转换加工生产线速度,包括下层基底141的线速度V,从零向所期望的生产速度逐渐增加)。
如图1所示,喷墨印刷工位143在某些实施例中可包括双头排列,所述双头排列包括以在纵向MD上延伸的空间距离157设置的第一喷墨印刷头153和第二喷墨印刷头155。然而,应该指出的是,第一和第二印刷头153,155可被设置成彼此相距任何所期望的空间距离。在某些实施例中,第一喷墨印刷头153和第二喷墨印刷头155能够以并列方式设定方向,在横向上横跨下层基底。该并列方向设定提高了喷墨印刷头153,155的宽向覆盖率。
第一和第二印刷头153和155可为适于印刷着色区的任何类型,并且可被设置成与下层基底141相距某个合适的距离。在某些实施例中,该距离可为约0.5mm至约3mm,并且在某些其他实施例中为约1mm至约2mm。在某些实施例中,喷墨印刷工位可包括一个或多个数字印刷机诸如连续的二元阵列,从而允许具有比其他喷墨印刷机更大的墨滴速度,因此允许在印刷头和纤维网之间具有更宽的间隙以提供高品质的图像。
可从共同墨源为印刷头153和155供墨;虽然在某些实施例中,也可利用独立墨源。
印刷头153和155的每一个均包括分配多重基本均匀的墨点的多重喷嘴。在本发明的一个实施例中,印刷头153和155可各自包括256个喷嘴,从而在横向上形成约2英寸长(约50.8mm)的线性构型。因此,印刷头153和155能够各自印刷如下墨像,所述墨像包含横跨下层基底141线性地延伸约50.8mm的256个墨点。该排列足够用于印刷至多约50.8mm宽的任何图像,所述宽度在下层基底141的横向上测量。然而,可为每个印刷头提供任何数目的喷嘴以印刷所期望的宽度W的着色区,所述宽度的变化范围在某些实施例中,对于按本发明的方法生产的吸收制品,可为约5mm至约185mm,在某些其他实施例中为约20mm至约105mm。
对于具有256个喷嘴的印刷头,此类印刷头购自VideojetTechnologies,Inc.(Wood Dale,Ill.)。印刷工位143可为喷墨印刷***的一部分,所述喷墨印刷***也购自Videojet Technologies,Inc.,如包括墨源和用于提供墨并控制形成各个小墨滴的喷嘴的控制器的BX6000系列喷墨印刷***。
在该BX6000系列喷墨印刷***中,能够使用连续的二元阵列,其中小墨滴是从印刷头153和155的所有喷嘴连续地分配的,但仅允许某些小墨滴在所期望的位置到达下层基底141以形成印刷的图像。其他小墨滴能够通过将小墨滴偏转到用于连续重复使用的回收墨流中而被阻止到达下层基底141。每个印刷头的所述各个墨喷嘴的操作能够由该BX6000系列***中所包括的控制器来控制。
在某些实施例中,为替代连续类型的喷墨印刷***,喷墨印刷***可为按需型喷墨印刷***(诸如热喷墨或Peizo按需喷墨),其中墨通常不被回收利用并且小墨滴是按需并以所期望的顺序形成的以印刷出着色区。
再参见图1,第一和第二印刷头153和155能够各自彼此独立地印刷着色区。例如,在某些实施例中,当第一印刷头153处于印刷模式时,第二印刷头155能够处于待机或闲置模式(不在下层基底141上印刷图像)。相反,当第一印刷头153处于待机模式时,第二印刷头155能够处于印刷图像的印刷模式。如上所述,在印刷模式和待机模式这两种操作模式中,小滴在印刷头153和155中所述256个喷嘴中的每一个中连续地形成;然而,在待机模式中,所有分配的小滴均被偏转并被回收到回收墨流中,但在印刷模式中,未偏转的小滴被沉积在下层基底141上,并且偏转小滴被回收到回收墨流中。在某些其他实施例中,第一印刷头153和第二印刷头155能够同时印刷着色区以印刷出两种颜色。在另一个实施例中,第一印刷头153和第二印刷头155能够在CD上偏移以增加CD分辩率,例如从128dpi增加至256dpi。另一个实施例,第一印刷头153和第二印刷头155能够用来两次印刷相同的着色区以增加颜色强度。
再参见图1,在喷墨印刷之后,下层基底141行进至切割和放置装置159,所述装置能够将下层基底141分割成在该实施例中包括第二顶片41在内的各个片材,然后将第二顶片41以所期望的间距P放置到顶片纤维网270上,所述顶片纤维网是从在纵向MD上以所期望的速度移动的复合基底270生产的。顶片纤维网270可由本领域的技术人员已知的任何合适的部件以需要的速度提供和计量。然后,吸收芯纤维网160(其也能够由任何合适的装置提供和计量)被切割成各个吸收芯60,所述各个吸收芯随后被放置到先前设置在顶片纤维网270上的第二顶片41上。吸收芯60的切割和放置操作能够由切割和滑动或切割和放置装置161或本领域已知的任何合适的纤维网切割和放置装置来提供。此外,底片纤维网170(其也能够由任何合适的装置提供和计量)被沉积到吸收芯60上以提供夹层式纤维网175,所述夹层式纤维网随后被粘结在一起并被切割成各个吸收制品200。夹层式纤维网175的粘结、切割和放置操作也可由本领域已知的任何合适的部件提供,例如由最终刀176提供。可利用本领域的技术人员已知的多种合适的固定机构或***来获得任何粘结。此类固定机构的例子可包括但不限于以多种图案在所述两个邻接的表面之间施用粘合剂、缠结一个吸收体组件的至少一些部分与另一个组件的邻近表面的一些部分、或将一个组件的邻近表面的至少一些部分熔合到该吸收体的另一个组件的一些部分上。然后所述各个吸收制品(它们在该例子中为女性卫生巾200)能够被任何合适的装置诸如传送装置178传送至下游操作诸如折叠、包裹、和装填。
现在参见图7,示出了通过本发明的方法生产的吸收制品的顶视图,其在该所示的实施例中为女性卫生巾200。女性卫生巾200可具有基本上平面的构型和中心区202。中心区202为女性卫生巾200的平面内质心。中心区202位于纵向中心线L和横向中心线T之间的交会处。横向中心线T垂直于纵向中心线L。女性卫生巾200可关于横向中心线T为对称的或非对称的。女性卫生巾200具有包括从复合基底生产的顶片208的面向身体的表面204、吸收芯60、定位在顶片208和吸收芯60之间的从下层基底生产的第二顶片41、和包括液体不可透过的底片209的面向衣服的表面206。
在某些实施例中,第二顶片可为适形的、感觉柔软的、并且对穿着者的皮肤和毛发无刺激性。此外,第二顶片为液体可透过的,允许液体诸如经液或尿液容易地穿透其厚度。合适的第二顶片可由范围广泛的材料制成,诸如织造材料和非织造材料,例如非织造纤维网;聚合物材料诸如开孔成形热塑性膜、开孔塑性膜、和液压成形热塑性膜;多孔泡沫;蜂窝状泡沫;蜂窝状热塑性膜;和热塑性稀松布。合适的织造材料和非织造材料可包括:天然纤维,诸如木纤维或棉纤维;合成纤维,诸如聚合物纤维-例如聚酯,聚丙烯、或聚乙烯纤维;或由天然纤维和合成纤维的组合构成。当第二顶片包括非织造纤维网时,该纤维网可通过多种已知的技术来制造。例如,纤维网可纺粘、梳理成网、湿法成网、熔喷、水刺、上述技术的组合等。
底片为液体诸如经液或尿液基本上不可透过的,并且可由薄的塑料膜制成,虽然也可使用其他柔性的液体不可透过的材料。底片防止被吸收芯所吸收的流出物润湿穿着者的被褥或衣服例如床单、裤子、睡衣和内衣。在某些实施例中,底片能够可操作地允许空气和湿气足够地透出吸收制品尤其是透出吸收芯,同时阻止体液透过。因此底片可包括织造材料或非织造材料;诸如聚乙烯或聚丙烯的热塑性膜之类的聚合物薄膜;或诸如膜涂层的非织造材料之类的复合材料。在一个实施例中,底片可为能够透气的底片,诸如2003年9月23日公布的美国专利6,623,464(Bewick-Sonntag等人)所述的底片。
如图7所示,底片209和顶片208分别被定位成邻近吸收芯60的面向衣服的表面206和面向身体的表面204。在某些实施例中,吸收芯能够通过已知的连接部件诸如上述那些或本领域熟知的那些与顶片、底片或它们两者接合。然而,在某些实施例中,本发明的吸收芯不附接到顶片、底片或它们两者上。
图1中的吸收芯60一般设置在顶片208和底片209之间。吸收芯60可包括任何吸收材料,所述材料一般为可压缩的、适形的、对穿着者的皮肤无刺激性,并且能够吸收和保留液体诸如尿液和其他某些身体流出物诸如经液。吸收芯60可包括很多种液体吸收材料,这些材料通常用于女性护理制品和其他吸收制品,诸如一般称作透气毡的粉碎的木浆。其他合适的吸收材料的例子包括绉纱纤维素填料、熔喷聚合物(包括共成型的);化学硬化、改性或交联的纤维素纤维;薄纸,包括薄纸包裹物和薄纸层压材料;吸收泡沫,诸如由高内相乳液(HIPEs)形成的泡沫;吸收海绵;超吸收聚合物;吸收胶凝材料;或任何其他已知的吸收材料或材料组合。吸收芯还可包括少量(典型地少于10%)的非液体吸收材料,例如粘合剂、蜡、油以及类似材料。可用于本发明的吸收结构的例子存在于以下专利中:1989年5月30日公布的美国专利4,834,735(Alemany等人);1997年7月22日公布的美国专利5,625,222(DesMarais等人)。
吸收芯也可包括一种或多种超吸收材料。适用于本发明的超吸收材料是本领域的技术人员已知的,并且可呈任何可操作的形式,诸如颗粒形式,所述超吸收材料能够为水可溶胀的,大致水不溶性的、水凝胶成形聚合物吸收材料,其能够吸收至少约20倍,在某些实施例中约30倍,并且在附加的实施例中约60倍于其自身重量或更多的生理盐水(例如0.9wt%NaCl)。水凝胶成形聚合物吸收材料可由有机水凝胶成形聚合物材料形成,所述聚合物材料可包括天然材料诸如琼脂、果胶、和瓜尔胶;改性的天然材料诸如羧甲基纤维素、羧乙基纤维素、和羟丙基纤维素;和合成水凝胶成形聚合物。合成水凝胶成形聚合物包括例如聚丙烯酸的碱金属盐、聚丙烯酰胺、聚乙烯醇、乙烯马来酸酐共聚物、聚乙烯醚、聚乙烯吗啉代、乙烯基磺酸的聚合物和共聚物、聚丙烯酸酯、聚丙烯酰胺、聚乙烯吡啶等。其他合适的水凝胶成形聚合物包括水解丙烯腈接枝淀粉、丙烯酸接枝淀粉、和异丁烯马来酸酐共聚物以及它们的混合物。所述水凝胶成形聚合物优选地为略微交联的以使所述材料成为基本上水不溶解的。交联可例如通过照射或共价键、离子键、范德瓦尔斯键或氢键来实现。合适的材料购自各种商业销售商,诸如Dow Chemical Company and Stockhausen,Inc.。超吸收材料可被包括在吸收制品的指定的储存或保持部分中,并且可任选地用于吸收制品的其他组件或部分。
如图7所示,可认为女性卫生巾200具有作为面向身体的表面204的观测表面。虽然顶片位于观察者和第二顶片41之间,但当面向身体的表面204朝向观察者时,顶片208和第二顶片41是可见的(能够被观察者视觉感知到)。
当观察女性卫生巾200的面向身体的表面204时,女性卫生巾200可具有背景区214。背景区214为可在视觉上区别于第一着色区216和第二着色区218的区域。背景区214可为白色或任何其他颜色,所述颜色可在视觉上区别于第一着色区216和第二着色区218。如果在两种颜色之间存在至少约1的则所述两种颜色据信是在视觉上可分辨的。
顶片208包括第一着色区216。第一着色区216可为顶片208的组分颜色,其中背景区214被加工成具有不同于顶片208的组分颜色的颜色。第一着色区216能够对应于在顶片208中形成的簇262的图案。第一着色区216帮助掩蔽被吸收的体液,所述被吸收的体液由于由复合基底270形成的顶片208的第二前体纤维网102对所吸收的体液的保持而可被穿着者看见。第一着色区216能够设置在例如顶片208的面向身体侧或顶片208的面向衣服侧上。相似地,第二顶片41包括第二着色区218。第二着色区218可为第二顶片41的组分颜色,其中背景区214被加工成具有不同于第二顶片41的组分颜色的颜色。第二着色区218能够设置在例如第二顶片41的面向身体侧或第二顶片41的面向衣服侧上。第二着色区218能够与纵向中心线L重合。即,第二着色区218的一部分能够与纵向中心线L相交。
当观察面向身体的表面204时,观察者可观察到背景区214、第一着色区216和第二着色区218。第一着色区216和第二着色区218在视觉上不同于背景区214,因为第一着色区216和第二着色区218各自在颜色上不同于背景区214。第一着色区216和背景区214能够按至少约1的下文详述的在颜色上相区别。如果期望更大的视觉显著性,则第一着色区216和背景区214能够按至少约3的下文详述的在颜色上相区别。
相似地,第二着色区218和背景区214能够按至少约1的在颜色上相区别。第一着色区216和第二着色区218均能够按至少约1的在颜色上不同于背景区214。如果在所述两种颜色之间存在至少约3的则第一着色区216和第二着色区218能够在视觉上具有更大的可分辨性。
如图7所示,在某些实施例中,第一着色区216能够在垂直于纵向中心线L的方向上比第二着色区218横向延伸得更广。
第一着色区216能够被设计成在视觉上是与第二着色区218互补的,并且在面向身体的表面204的更宽/更广的部分上呈现给观察者。认为通过在与第二着色区218不同的材料层上具有第一着色区216能够在女性卫生巾200上产生更丰富的视觉印象。例如,由于第一着色区216和第二着色区218位于不同的材料层上,因此当被观察时,这些着色区中的至少一个将透过包括另一个着色区的层而被观察到。透过另一个层材料观察到的着色区可具有就图像的柔软性/漫射度而言显著不同的视觉印象,略微类似于糙面照片与光面照片之间的差别。
此外,如果第二着色区218是通过喷墨印刷提供的,则第二着色区218的设计能够轻易地改变,以便单一包装件或不同包装件内的女性卫生巾200可具有第二着色区218的不同设计。第一着色区216可由不能够被容易地改变的接触印刷设备来提供。因此,第一着色区216可为固定的设计,所述设计可被消费者识别为源自特定品牌的产品或具有特定品质的产品。
比第二着色区218横向延伸得更广的第一着色区216也能够向穿着者提供如下印象:女性卫生巾200的此类横向延伸得更广的部分能够收集并保留流体。例如,如果第一着色区在横向CD上横跨女性卫生巾200的主要部分延伸,则女性卫生巾200的观察者可将第一着色区216理解为阻挡流体流出第一着色区216的屏障或将其理解为如下边界,使用者不应当预期流体在女性卫生巾200的纵向MD上行进时将流出所述边界。
第二着色区218能够与中心区202重合。作为女性卫生巾200的平面内质心,中心区202可能被穿着者理解为女性卫生巾200的邻近其***口或尿道的位置。与其中第二着色区218相对于纵向中心线L不对称的设计相比,其中第二着色区218为关于纵向中心线对称的设计可提供更悦人的对女性卫生巾200的印象。
如图7所示,第二着色区218和第一着色区216能够沿纵向中心线彼此间隔开。通过使第一着色区216和第二着色区218间隔开,据信在制造期间当将所述两个基底放置在一起时可能发生顶片208和第二顶片41的不适当的不同步,这对于穿着者来讲可能不太明显,因为可能难以从一个衬垫至另一个衬垫感知到第一着色区216和第二着色区218之间的间隙的相对小的差别。第一着色区216和第二着色区218能够被背景区214彼此隔开。
如图7所示,女性卫生巾200具有周边220。背景区214能够位于第一着色区218和周边220之间。这种排列被认为提供了改善的视觉印象,因为周边220具有未被女性卫生巾200的着色区所中断的清晰线条。由于相同的原因,第一着色区216和第二着色区218能够基本上被背景区214围绕。例如,周边220的小于25%能够被第二着色区218或第一着色区216或第一着色区216和第二着色区218的组合中断。第二着色区218能够被背景区214围绕。
如图7所示,第二着色区218可为基本上细长的形状。不受理论的约束,据信与缺乏这种细长形状的女性卫生巾相比,对齐于或对齐在纵向中心线L上的基本上细长的形状可使得女性卫生巾200看起来似乎女性卫生巾200更纤细。穿着者可能将这种印象与如下想法相关联:明显窄的女性卫生巾200将舒适地贴合在她们女性内裤的裆部中。第二着色区218在某些实施例中可具有小于与横向中心线T重合的周边220的部分之间的最大距离的约50%的宽度。椭圆形和大致矩形的形状为基本上细长形状的一些例子。为了提供在视觉上更相关的设计,第一着色区216和第二着色区218能够处在小于约200的CIELab色彩空间体积内。下文更详细地讨论CIELab颜色空间体积。利用这种方法,第一着色区216的颜色和第二着色区218的颜色对于大多数观察者的眼睛来讲基本上没有差别,并且观察者可能将这些颜色感知为相同的或感知为色调或相同颜色的细微变型。颜色的细微变型被认为是悦目的,非常类似于家庭装修商店中所见到的具有轻微颜色变化的油漆样片,所述样片看起来可令人愉快且有趣。如果期望第一着色区216和第二着色区218之间的显著性较小,则第一着色区216和第二着色区218能够处在小于约50的CIELab色彩空间体积内。
第一着色区216能够为基本上弓形形状的。认为弓形形状的第一着色区216将被穿着者认知为吸收制品中的液体流动的屏障,或者被认知为对穿着者的如下提示:她们可能不希望流体流出这种着色区,或一旦发生了此类流体流出,他们可能希望准备在不久后穿着新的产品。
弓形形状包括但不限于大致对应于普通键盘上所见到的形状的形状,包括大于号、括号、长音符(也称作脱字符)、和方括号以及大致c形的形状、以及任何这些前述形状的略微的修改形式。如本文所定义,弓形形状可为大致弯曲的如同字母C或可为更具角度的诸如符号<。因此,弓形形状不是必定具有任何特定曲率。
图8示出了图7所示女性卫生巾200的横截面。可认为女性卫生巾200的每个组件均具有面向身体侧215和面向衣服侧217。当使用吸收制品时,面向身体侧215朝穿着者的身体定向,并且面向衣服侧217与面向身体侧215相对。
图9为具有第二着色区218的女性卫生巾的第二顶片41的示意图。图10为具有第一着色区216的女性卫生巾的顶片208的示意图。图9所示的第二顶片41能够与图10所示的顶片208对准以产生具有类似于图7所示的视觉印象的女性卫生巾200。
第一着色区216和第二着色区218以及背景区214的颜色根据颜色L*、a*和b*值通过反射分光光度计来测量。所述L*、a*和b*值是在女性卫生巾200的周边220的内侧从女性卫生巾200的面向身体的表面204测量的。色差使用L*、a*和b*值通过公式ΔE=[(L* X.-L* Y)2+(a* X.-a* Y)2+(b* X-b* Y)2]1/2来计算。在本文中,公式中的‘X’可表示第一着色区216、第二着色区218或背景区214,并且‘Y’可表示与此类区域的颜色对比的另一个区域的颜色。X和Y不应当同时为相同的两个测量点。换句话讲,就任何特定的色差比较而言,X的位置≠Y的位置。
如果使用两种以上的颜色,则‘X’和‘Y’值作为另外一种选择也在它们中包括测量点。在本文中,计算ΔE的关键是,‘X’和‘Y’值不应当出自观察表面上的相同的测量点。在那些其中在测量区域的范围内实际上不存在背景区214的情况下,‘X’值应当来自在空间关系上不同于‘Y’值,但在吸收芯周边范围内的点。
反射颜色使用获自Hunter Associates Laboratory(Reston,Va)的Hunter Lab LabScan XE反射分光光度计来测量。在介于65℉和75℉之间的环境温度和介于50%和80%之间的相对湿度下测试女性卫生巾200。
分光光度计被设置为CIELab比色刻度尺并采用D65照明。将观察仪设置在10°,将模式设置为45/0°。对于膜,将视域设定为0.125″,并且将孔口尺寸设定为0.20″。在进行样本分析之前,利用销售商随仪器提供的黑玻璃和白色基准瓷砖来校准分光光度计。校准按照制造商的说明书如LabScan XE用户手册中所述进行,用户手册版本1.1,2001年8月,A60-1010-862。如果要求清洁基准瓷砖或样本,则应当仅使用不包含压花、洗剂或增白剂的薄纸(例如,PUFFS薄纸)。可在要分析的包含所赋予的颜色的吸收制品上选择任何样本点。
将女性卫生巾200放置在分光光度计的样本孔口之上,其中将白色夹具盘放置在女性卫生巾200的后面。女性卫生巾200旨在处于基本上平坦的状态并且不含皱纹。
移除并重新定位女性卫生巾200以便获取面向身体的表面204的最少六个颜色读数。如果可能(例如,待测物件上所带颜色的尺寸对其拥有六个离散的、不重叠的不同样品点的能力不构成限制),每一读数均在所述外部可见表面上的一个充分不同的区域进行,从而使得没有两个样品点是重叠的。如果赋予的着色区的尺寸要求重叠样本点,则应当仅采用六个样本,并且选择样本点以最小化任何两个样本点之间的重叠。对于一个物件的外部可见表面上的一种特定颜色,将所述读数取平均值,得到L*、a*和b*的报告值。
在计算CIELab颜色空间体积V时,针对要测量的特定的一组区域,确定所报告的最大和最小L*、a*和b*值。根据以下公式使用所报告的最大和最小L*、a*和b*值来计算CIELab颜色空间体积V:
在以上公式中,ΔL*为被比较的所述两个着色区之间的L*值的差值,并且按下式计算:ΔL*=L* X-L* Y。Δa*为被比较的所述两个着色区之间的a*值的差值,并且按下式计算:Δa*=a* X-a* Y。Δb*为被比较的所述两个着色区之间的b*值的差值,并且按下式计算:Δb*=b* X-b* Y。CIELab颜色空间体积可得到某种大体上椭圆体形状的实体。如果ΔL*、Δa*和Δb*相等,则所述实体将为球形。如本文所用,“实体”是指具有长度、宽度和高度(或深度)的三维图形的数学概念。用椭圆体体积来计算体积是优选的,因为椭圆体一般要求ΔL*、Δa*和Δb*的尺寸差别比其他实体相对更均匀。此外,据信椭圆体体积在视觉上比球形体积更可接受(即,较少的被人感知的可觉察的颜色失配)。
在一些实施例中,离散的元件的至少两个外部可见表面的赋予的颜色将占据小于约200的CIELab颜色空间体积。根据下述测试方法对外部可见表面进行分析。在分析时,包括外部可见表面的元件的本色将产生L*、a*和b*坐标。然后使用上述公式计算CIELab颜色空间体积。所得体积可小于约200。所得体积可小于约50。
应当认识到,两个以上的具有可见表面的离散的着色区的赋予的颜色可占据前述CIELab颜色空间体积。在计算两个以上元件的CIELab颜色空间体积时,使用源自一组元件的最大和最小L*、a*和b*来计算CIELab颜色空间体积。最大色值和最小色值用于根据上述公式计算V。
本文所公开的量纲和值不旨在被理解为严格地限于所述的精确值。相反,除非另外指明,每个这样的量纲旨在表示所引用的值和围绕该值功能上等同的范围。例如,所公开的尺寸“40mm”旨在表示“约40mm”。
除非明确排除或另外限制,将本文引用的每篇文献,包括任何交叉引用或相关专利或专利申请,均据此全文以引用方式并入本文。任何文献的引用不是对其作为本文所公开的或受权利要求书保护的任何发明的现有技术,或者其单独地或者与任何其它参考文献的任何组合,或者参考、提出、建议或公开任何此类发明的认可。此外,当本发明中术语的任何含义或定义与以引用方式并入的文件中术语的任何含义或定义矛盾时,应当服从在本发明中赋予该术语的含义或定义。
尽管举例说明和描述了本发明的特定实施例,但是对本领域的技术人员显而易见的是,在不脱离本发明的实质和范围的情况下可作出许多其它的改变和变型。因此,随附权利要求书中旨在涵盖本发明范围内的所有这些改变和变型。
Claims (15)
1.生产具有两个或更多个着色区的多层吸收制品的方法,所述方法包括以下步骤:
a.提供吸收制品转换加工生产线;
b.提供第一前体纤维网给所述转换加工生产线;
c.使用接触印刷法在接触印刷工位将第一着色区印刷到所述第一前体纤维网上;
d.提供第二前体纤维网给所述转换加工生产线;
e.由所述第一前体纤维网和第二前体纤维网生产复合基底;
f.提供下层基底给所述转换加工生产线;
g.使用非接触印刷法在非接触印刷工位将第二着色区印刷到所述下层基底上;以及
h.将具有第一着色区的所述复合基底与具有第二着色区的所述下层基底组合以生产吸收制品。
2.根据权利要求1所述的方法,其中所述第一前体纤维网为聚合物膜。
3.根据权利要求1或2所述的方法,其中所述第二前体纤维网包含纤维。
4.根据前述权利要求中任一项所述的方法,其中所述第二前体纤维网为气流成网纤维素垫。
5.根据前述权利要求中任一项所述的方法,其中所述第一着色区被印刷到面向所述下层基底的所述第一前体纤维网的表面上,并且所述第二着色区被印刷到面向所述复合基底的所述下层基底的表面上。
6.根据前述权利要求中任一项所述的方法,其中所述第一着色区和所述第二着色区彼此不重叠。
7.根据前述权利要求中任一项所述的方法,其中所述非接触印刷法是使用连续二元阵列喷墨来完成的。
8.根据前述权利要求中任一项所述的方法,其中所述吸收制品为下列中的至少一个:面巾纸、卫生纸、纸巾、清洁擦拭物、清洁垫、卫生巾、卫生护垫、棉塞、***间装置、婴儿尿布、儿童训练裤、成人失禁产品、或吸收性擦拭物。
9.根据前述权利要求中任一项所述的方法,其中所述第一前体纤维网为前体膜纤维网,其中所述第二前体纤维网为前体非织造纤维网,其中所述下层基底为非织造材料纤维网,并且其中所述方法还包括以下步骤:
a.将所述复合基底切割成单个片材;
b.将所述非织造材料纤维网切割成单个片材;以及
c.将复合基底的单个片材和非织造材料的单个片材组合以生产吸收制品,而不是将具有第一着色区的所述复合基底与具有第二着色区的所述下层基底组合以生产吸收制品。
10.根据权利要求9所述的方法,其中所述吸收制品包括吸收芯,并且所述单个非织造材料片材定位在所述单个复合基底片材和所述吸收芯之间。
11.根据前述权利要求中任一项所述的方法,其中所述复合基底使用组合设备生产,其中所述组合设备在所述复合基底中形成至少一个簇。
12.根据权利要求11所述的方法,其中所述组合设备包括图案辊和非图案化的凹槽辊。
13.根据权利要求10或11所述的方法,其中在所述第一着色区中形成至少一个簇。
14.根据前述权利要求中任一项所述的方法,其中所述吸收制品为女性卫生巾,所述女性卫生巾具有中心区、周边、和纵向中心线;并且其中所述单个复合基底片材与所述单个非织造材料片材对准以在所述女性卫生巾的中心区中提供第二着色区并且在所述第二着色区和所述女性卫生巾的周边之间提供第一着色区。
15.根据权利要求9至14所述的方法,其中所述前体膜纤维网、前体非织造纤维网、和下层基底同时被提供给所述转换加工生产线。
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US12/908,519 | 2010-10-20 | ||
US12/908,519 US8691041B2 (en) | 2008-08-08 | 2010-10-20 | Method of producing a composite multi-layered printed absorbent article |
PCT/US2011/056978 WO2012054662A1 (en) | 2010-10-20 | 2011-10-20 | Method of producing a composite multi-layered printed absorbent article |
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CN103180143B CN103180143B (zh) | 2015-08-26 |
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US (6) | US8691041B2 (zh) |
EP (1) | EP2629974B1 (zh) |
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WO (1) | WO2012054662A1 (zh) |
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CN103180143B (zh) | 2015-08-26 |
WO2012054662A1 (en) | 2012-04-26 |
US20140174651A1 (en) | 2014-06-26 |
US20110094669A1 (en) | 2011-04-28 |
US9642752B2 (en) | 2017-05-09 |
US20210039375A1 (en) | 2021-02-11 |
BR112013008344A2 (pt) | 2016-06-14 |
EP2629974B1 (en) | 2019-06-19 |
US9610200B2 (en) | 2017-04-04 |
US20190282409A1 (en) | 2019-09-19 |
US20170210110A1 (en) | 2017-07-27 |
EP2629974A1 (en) | 2013-08-28 |
US10252506B2 (en) | 2019-04-09 |
US8691041B2 (en) | 2014-04-08 |
US20140174648A1 (en) | 2014-06-26 |
US10836149B2 (en) | 2020-11-17 |
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