CN115337148A - 吸收芯体及卫生用品 - Google Patents
吸收芯体及卫生用品 Download PDFInfo
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Abstract
本发明涉及一种吸收芯体及卫生用品，包括：依次层叠设置的扩散吸收层、中间层和防渗吸收层；所述扩散吸收层为无纺布层，且所述扩散吸收层的纤维截面呈多叶形设置；所述防渗吸收层为分段式中空粘胶纤维无纺布。本发明所述吸收芯体采用复合芯体，克服了木浆芯体过厚，容易断层起坨的缺点，并结合了木浆芯体瞬时捕液快及现有复合芯体的透气轻柔等优点，改善了现有复合芯体的临时捕液能力差，扩散性能不强等缺点，极大的提高产品多次吸液能力，显著改善吸收芯体的扩散性，提高芯体利用率及干爽性，且兼具较好的吸收性能和防反渗性能。
Description
技术领域
本发明涉及卫生用品技术领域，特别是涉及吸收芯体及卫生用品。
背景技术
在卫生用品领域，例如尿不湿、卫生巾、护垫、防溢乳垫等一次性吸收用品凭借其方便、卫生、舒适等优点，得到应用广泛，同时其质量标准也非常高，而吸收芯体则是一次性吸收用品的核心部分，也是决定卫生用品产品质量的决定性因素。尿不湿、卫生巾等作为吸收***物或体液的产品，主要依靠其吸收芯体实现对液体的吸收和储存。目前市场上的吸收芯体主要有两种：一种是绒毛浆芯体，由湿强纸或亲水无纺布包裹绒毛浆及高吸水树脂，绒毛浆芯体的瞬时捕液能力优异，但吸收液体后，容易变形滑动，导致绒毛浆芯体堆积起坨，并容易断层。另一种是复合芯体，由两层非织造材料，中间层蓬松无纺布，以及两层高吸水树脂材料组成，复合芯体克服了木浆芯体过厚，容易断层等缺点，由于缺乏扩散性，复合芯体的瞬间捕获液体能力较差，同时由于高吸水树脂吸水膨胀后导致凝胶阻塞，导致下渗通道堵塞，发生漏液，芯体利用率低，液体难以向四周扩散。
因此，如何改善现有技术的吸收芯体的结构，满足不同使用者的不同需求，提升吸收芯体的吸液能力，以及提高穿戴者的舒适性和愉悦性，是本领域技术人员亟待解决的技术问题。
发明内容
基于此，有必要针对现有技术的吸收芯体吸收液体后容易变形滑动，导致起坨、断层，或是缺乏扩散性、捕获液体能力差、易导致漏液，芯体利用率低的问题，提供一种吸收芯体及卫生用品。
一种吸收芯体，包括：依次层叠设置的扩散吸收层、中间层和防渗吸收层；所述扩散吸收层为无纺布层，且所述扩散吸收层的纤维截面呈多叶形设置；所述防渗吸收层为分段式中空粘胶纤维无纺布。
在其中一个实施例中，所述分段式中空粘胶纤维无纺布中，纤维的中空段与实心段交错设置或间隔设置。
在其中一个实施例中，所述分段式中空粘胶纤维无纺布的克重范围为25gsm-50gsm；进一步地，所述分段式中空粘胶纤维无纺布的克重范围为30gsm-40gsm；或者，所述分段式中空粘胶纤维无纺布的克重为30gsm。
在其中一个实施例中，所述扩散吸收层的纤维截面呈三叶形设置。
在其中一个实施例中，所述扩散吸收层的纤维截面包括呈发散状间隔设置的多个叶片，多个叶片的一端连接成一体，多个叶片的另一端具有弧形弧度。
在其中一个实施例中，所述扩散吸收层的克重范围为25gsm-50gsm；进一步地，所述扩散吸收层的克重范围为30gsm-40gsm；或者，所述扩散吸收层的克重为30gsm。
在其中一个实施例中，所述中间层为蓬松无纺布层，且所述中间层还添加有高吸水性材料。
在其中一个实施例中，所述高吸水性材料为高吸水树脂。
在其中一个实施例中，所述高吸水树脂设于所述中间层的表层和底层。
在其中一个实施例中，所述扩散吸收层与中间层之间，中间层与防渗吸收层之间均设有胶粘剂。
在其中一个实施例中，所述扩散吸收层与中间层之间，中间层与防渗吸收层之间均设有高吸水性材料；或者，所述所述扩散吸收层与中间层之间，中间层与防渗吸收层之间均设有高吸水树脂。
本技术方案还提供一种卫生用品，包括透液面层和疏液底层，以及如上述任一项所述的吸收芯体；所述吸收芯体设于所述透液面层和所述疏液底层之间。
本技术方案的有益效果至少包括：
本技术方案所述吸收芯体采用复合芯体，克服了木浆芯体过厚，容易断层起坨的缺点，并结合了木浆芯体瞬时捕液快及现有复合芯体的透气轻柔等优点。具体地，本技术方案的吸收芯体的扩散吸收层为表层，采用纤维截面呈多叶形设置的水刺粘胶纤维制成，多叶形纤维横截面可形成毛细通道，实现高效的液体扩散效率，从而达到快速吸收扩散的效果，可迅速吸收并传导液体，同时降低材料中的回渗量，与使用者皮肤接触的液体量减少，有益于产品整体回渗量的降低，保持产品在使用过程中的干爽度，改善了现有复合芯体的临时捕液能力差，扩散性能不强等缺点，极大的提高产品多次吸液能力，显著改善吸收芯体的扩散性，提高芯体利用率及干爽性。同时，本技术方案的防渗层为底层，采用分段式中空粘胶纤维无纺布，分段式的中空结构即纤维部分中空，部分实心，中空部分提高抗压能力，防反渗，实心部分提高吸收能力，从而使底层保液性强，不仅可在纤维之间及限位内部储存液体，即使对吸收芯体施加压力，液体仍可保留在纤维内部，不会向上反渗到表层，从而降低芯体回渗量，有助于保持产品干爽，兼具较好的吸收性能和防反渗性能。
本技术方案的卫生用品，所述吸收芯体靠近透液面层的一侧为扩散吸收层所在侧，靠近疏液底层的一侧为防渗吸收层所在侧。当穿戴本技术方案所述的卫生用品时，透液面层用于与人体肌肤直接接触，将液体通过透液面层透入至吸收芯体的扩散吸收层，再由扩散吸收层逐级导入至中间层、防渗吸收层，从而使卫生用品兼具较好的吸收性能和防反渗性能。
附图说明
图1为本发明的实施方式的吸收芯体的截面示意图。
附图标记：10、扩散吸收层；11、叶片；20、中间层；21、高吸水性材料；30、防渗吸收层；31、中空部分；32、实心部分。
具体实施方式
为使本发明的上述目的、特征和优点能够更加明显易懂，下面结合附图对本发明的具体实施方式做详细的说明。在下面的描述中阐述了很多具体细节以便于充分理解本发明。但是本发明能够以很多不同于在此描述的其它方式来实施，本领域技术人员可以在不违背本发明内涵的情况下做类似改进，因此本发明不受下面公开的具体实施例的限制。
如图1所示的一种吸收芯体，包括：依次层叠设置的扩散吸收层10、中间层20和防渗吸收层30；所述扩散吸收层10为无纺布层，且所述扩散吸收层10的纤维截面呈多叶形设置；所述防渗吸收层30为分段式中空粘胶纤维无纺布。
本实施方式所述吸收芯体采用复合芯体，克服了木浆芯体过厚，容易断层起坨的缺点，并结合了木浆芯体瞬时捕液快及现有复合芯体的透气轻柔等优点。具体地，本实施方式的吸收芯体的扩散吸收层10为表层，采用纤维截面呈多叶形设置的水刺粘胶纤维制成，多叶形纤维横截面可形成毛细通道，实现高效的液体扩散效率，从而达到快速吸收扩散的效果，可迅速吸收并传导液体，同时降低材料中的回渗量，与使用者皮肤接触的液体量减少，有益于产品整体回渗量的降低，保持产品在使用过程中的干爽度，改善了现有复合芯体的临时捕液能力差，扩散性能不强等缺点，极大的提高产品多次吸液能力，显著改善吸收芯体的扩散性，提高芯体利用率及干爽性。同时，本实施方式的防渗层为底层，采用分段式中空粘胶纤维无纺布，分段式的中空结构即纤维部分中空，部分实心，中空部分31提高抗压能力，防反渗，实心部分32提高吸收能力，从而使底层保液性强，不仅可在纤维之间及限位内部储存液体，即使对吸收芯体施加压力，液体仍可保留在纤维内部，不会向上反渗到表层，从而降低芯体回渗量，有助于保持产品干爽，兼具较好的吸收性能和防反渗性能。
本实施方式所述分段式中空粘胶纤维无纺布中，纤维的中空段与实心段交错设置或间隔设置，从而尽量平衡防渗吸收层30的吸液能力和防渗能力。例如，分段式中空粘胶纤维无纺布中，包括纤维之间和纤维自身折叠的状况，中空段与实心段相邻(交错)设置或中空段与实心段之间间隔一个以上其他中空段，使在防渗吸收层30在某一局部的同一截面内既具备中空部分31又具备实心部分32，从而使该局部部位既能通过实心段快速捕液，又能通过中空段储存液体以及抗压反渗。
本实施方式所述分段式中空粘胶纤维无纺布的克重范围为30gsm-40gsm；在此克重范围内的防渗吸收层30，兼顾了防渗吸收性能和制作成本，吸液快，储液能力佳，同时保证了使用者穿戴的舒适度和轻盈度。优选地，所述分段式中空粘胶纤维无纺布的克重为30gsm。
本实施方式所述扩散吸收层10的纤维截面包括呈发散状间隔设置的多个叶片11，多个叶片11的一端连接成一体，多个叶片11的另一端具有弧形弧度。本实施方式以三叶形纤维截面为例进行说明，所述扩散吸收层10的纤维截面呈三叶形设置，本实施方式的纤维截面包括呈发散状间隔均匀设置的三个叶片11，三个叶片11的一端连接成一体，三个叶片11的另一端即自由端可设置为具有弧形弧度，从而减少叶片11自由端的应力集中，增加叶片11的结构强度，同时也能使扩散吸收层10的手感更加柔和。
在其他实施方式中，可采用其他截面呈放射状多叶形设置的纤维，例如四叶形截面、五叶形截面等。
本实施方式所述扩散吸收层10的克重范围为30gsm-40gsm,在此克重范围内的扩散吸收层10兼顾了扩散吸收性能和制作成本，同时保证了透气性、蓬松度以及使用者穿戴的舒适度。优选地，本实施方式所述扩散吸收层10的克重为30gsm。
本实施方式所述中间层20为蓬松无纺布层，具有蓬松度高、弹性好、手感柔软、透气透水性好等优点，且所述中间层20还添加有高吸水性材料21，即高吸水性材料21通过蓬松无纺布包裹，进一步加强了蓬松无纺布的吸液能力，当液体通过扩散吸收层10的导流扩散进入到中间层20时，可快速被包裹于蓬松无纺布内的高吸水性材料21吸收，大大提升中间层20的吸液能力。
优选地，所述高吸水性材料21为高吸水树脂，高吸水树脂成分安全无毒，且具有亲水基团，如羟基、羧基等，能大量吸收水分而溶胀又能保持住水分不外流，可以吸收相当于树脂体积100倍以上的水分最高的吸水率可达1000倍以上。并且，树脂具有交联型结构，在与水的相互作用时不被溶解成溶液。
本实施方式的高吸水树脂添加于中间层20的表层和底层，即中间层20靠近扩散吸收层10和靠近防渗吸收层30的面均添加有高吸水树脂，能够较好地保证快速捕获液体的性能以及保证产品整体的蓬松度和干爽性。
本实施方式所述扩散吸收层10与中间层20之间，中间层20与防渗吸收层30之间均设有胶粘剂，通过胶粘剂将各层粘合。
另外，为了提升本实施方式的的吸收芯体的吸液能力，所述扩散吸收层10与中间层20之间，中间层20与防渗吸收层30之间均设有高吸水性材料21，有利于提升吸水率和吸水速度，降低反渗量。
优选地，本实施方式所述所述扩散吸收层10与中间层20之间，中间层20与防渗吸收层30之间均设有高吸水树脂，高吸水树脂一旦吸足水分后，即形成溶胀的凝胶体，凝胶体的保水能力较强，即使在加压下也不易挤出，进一步提升反渗性能。
另外，还可在吸收芯体内添加吸附颗粒，例如可添加活性炭颗粒，活性炭颗粒均匀分布在吸收芯体内。所述吸附颗粒可设于扩散吸收层、中间层和防渗吸收层中的任意一层或几层。添加吸附颗粒的设置可吸收吸收芯体在吸收体液后产生的异味，提高使用者的舒适感和愉悦感。
本实施方式还提供一种卫生用品，具体地为一次性卫生用品，可为尿不湿、卫生巾、护垫和防溢乳垫等，所述卫生用品包括透液面层和疏液底层，以及如上述任一项所述的吸收芯体；所述吸收芯体设于所述透液面层和所述疏液底层之间。
所述疏液底层为不透液层，防止液体渗漏到外部造成漏液。所述疏液底层可为可降解防水薄膜，可为由聚乳酸和聚己二酸对苯二甲酸丁二脂混合制成的薄膜结构。其中，聚乳酸具有较高的模量和拉伸强度，但断裂伸长率较低，韧性较差；聚己二酸对苯二甲酸丁二脂柔软度和韧性均较佳，但模量和拉伸强度则较低。而由聚乳酸和聚己二酸对苯二甲酸丁二脂混合制成的薄膜结构兼顾高模量、高强度和高断裂伸长率、高韧性等多重优点，同时可生物降解，安全环保可持续，从而可使卫生用品在使用过程中，疏液底层能够承受住因吸收芯体吸收液体膨胀后所造成的膨胀压力，且能够防止液体渗漏到外部，避免弄脏衣物或床单等。
或者，所述疏液底层可为由至少一层经疏水处理的可降解无纺布组成，不仅能达到防渗漏效果，还能够带来柔软触感。
具体地，所述吸收芯体靠近透液面层的一侧为扩散吸收层所在侧，靠近疏液底层的一侧为防渗吸收层所在侧。当穿戴本实施方式所述的卫生用品时，透液面层用于与人体肌肤直接接触，将液体通过透液面层透入至吸收芯体的扩散吸收层，再由扩散吸收层逐级导入至中间层、防渗吸收层。
所述透液面层可为无纺布层，还可设置压花结构，也可设置不同颜色、不同形状的印花，提升产品的趣味性和美感。
实施例一
本实施方式以卫生用品为尿不湿为实施例一进行说明。所述尿不湿包括前腰部、后腰部，以及连接所述前腰部和后腰部的裆部，所述透液面层、疏液底层，以及设于透液面层和疏液底层之间的吸收芯体所形成的复合结构至少设于所述裆部位置，且前腰部或者后腰部还设有用于对尿不湿进行固定的魔术贴或魔术扣等。所述魔术贴或者魔术扣可设置为具有弹性，使其具有收缩性，从而可适应不同体型的婴幼儿，使用时刻较好地贴合婴幼儿的腰臀部。
所述裆部位置的左右两侧边缘设置弹性腿围，可通过镶嵌松紧带等形式实现。通过弹性腿围勒紧大腿根部，使尿不湿边缘紧贴于使用者的身体上，进一步起到防止渗漏的效果。
本实施例所述的尿不湿包括裤型纸尿裤。
实施例二
本实施方式以卫生用品为卫生巾为实施例二进行说明。所述卫生巾包括卫生巾本体，设于所述卫生巾本体背面的背胶层，以及覆盖于所述背胶层上的离型纸。所述卫生巾本体包括中间裆部，以及设于所述中间裆部两相对侧的护翼，所述护翼用于固定卫生巾。所述透液面层、疏液底层，以及设于透液面层和疏液底层之间的吸收芯体所形成的复合结构设于所述中间裆部位置，背胶层可设于疏液底层的外侧。
另外，当吸收芯体用于卫生巾时，还可在卫生巾中添加一层中药层，可根据具体需求选择中药层设置的位置，例如可设于吸收芯体内，也可设于吸收芯体与透液面层之间。中药层所采用的重要以去除异味和缓解痛经或者其他在经期间的不适症状的成分为主，例如可为艾叶等。
另外，本实施方式的吸收芯体也适用于裤型卫生巾。在本发明中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。需要说明的是，当元件被称为“固定于”或“设置于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“上”、“下”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。
Claims (10)
1.一种吸收芯体，其特征在于，包括：依次层叠设置的扩散吸收层、中间层和防渗吸收层；所述扩散吸收层为无纺布层，且所述扩散吸收层的纤维截面呈多叶形设置；所述防渗吸收层为分段式中空粘胶纤维无纺布。
2.根据权利要求1所述的吸收芯体，其特征在于，所述分段式中空粘胶纤维无纺布的克重范围为30gsm-40gsm；或者，所述分段式中空粘胶纤维无纺布的克重为30gsm。
3.根据权利要求1所述的吸收芯体，其特征在于，所述扩散吸收层的纤维截面包括呈发散状间隔设置的多个叶片，多个叶片的一端连接成一体，多个叶片的另一端具有弧形弧度。
4.根据权利要求1所述的吸收芯体，其特征在于，所述扩散吸收层的克重范围为30gsm-40gsm；或者，所述扩散吸收层的克重为30gsm。
5.根据权利要求1所述的吸收芯体，其特征在于，所述中间层为蓬松无纺布层，且所述中间层还添加有高吸水性材料。
6.根据权利要求5所述的吸收芯体，其特征在于，所述高吸水性材料为高吸水树脂。
7.根据权利要求6所述的吸收芯体，其特征在于，所述高吸水树脂设于所述中间层的表层和底层。
8.根据权利要求1-7任一项所述的吸收芯体，其特征在于，所述扩散吸收层与中间层之间，中间层与防渗吸收层之间均设有胶粘剂。
9.根据权利要求1-7任一项所述的吸收芯体，其特征在于，所述扩散吸收层与中间层之间，中间层与防渗吸收层之间均设有高吸水性材料；或者，所述扩散吸收层与中间层之间，中间层与防渗吸收层之间均设有高吸水树脂。
10.一种卫生用品，包括透液面层和疏液底层，以及如权利要求1-9任一项所述的吸收芯体；所述吸收芯体设于所述透液面层和所述疏液底层之间。
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