CN109152680B - 吸收性物品 - Google Patents

吸收性物品 Download PDF

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Publication number
CN109152680B
CN109152680B CN201780029703.9A CN201780029703A CN109152680B CN 109152680 B CN109152680 B CN 109152680B CN 201780029703 A CN201780029703 A CN 201780029703A CN 109152680 B CN109152680 B CN 109152680B
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China
Prior art keywords
fiber
absorbent article
nonwoven fabric
organic cotton
fibers
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CN201780029703.9A
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English (en)
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CN109152680A (zh
Inventor
深山拓也
坂口智
宇田匡志
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Unicharm Corp
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Unicharm Corp
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Priority to CN202010373522.1A priority Critical patent/CN111481349A/zh
Publication of CN109152680A publication Critical patent/CN109152680A/zh
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    • A61F2013/51452—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a fibrous material being nonwovens
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F2013/530131—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium being made in fibre but being not pulp
    • A61F2013/530343—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium being made in fibre but being not pulp being natural fibres
    • A61F2013/53035—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium being made in fibre but being not pulp being natural fibres of cotton

Abstract

提供一种能够进一步给使用者带来安心感的吸收性物品。吸收性物品(1)具备无纺布(3、4)。无纺布(3、4)含有有机棉纤维(10)。有机棉纤维(10)在无纺布(3、4)内形成有多个纤维块(11)。纤维块(11)构成为能够从外部视觉识别。无纺布(3、4)中的纤维块(11)的部分的透光率比无纺布(3、4)中的不存在纤维块(11)的部分的透光率低。

Description

吸收性物品
技术领域
本发明涉及一种具备含有有机棉纤维的无纺布的吸收性物品和包装该吸收性物品的包装体。
背景技术
专利文献1公开了一种具备含有疏水性合成纤维和亲水性纤维的无纺布的吸收性物品。亲水性纤维是天然纤维素纤维，例如棉花、人造丝。亲水性纤维的至少一部分成为集合体而在片材内分散。构成集合体的亲水性纤维的至少一部分熔接于疏水性纤维的表面。
现有技术文献
专利文献
专利文献1：日本特开2002-651号
发明内容
近年来，保护自然环境的意识提高，并且想要使用对肌肤温和的原材料的意识提高，因此，使用者对无农药栽培的源自自然的原材料的兴趣升高。对于特别是婴幼儿所使用的一次性尿布这样的吸收性物品，想要使用对肌肤温和的原材料的要求升高。然而，使用者自身确认吸收性物品的原材料较为困难，有时无法真实地感受到对产品的安心感。
由此，期望一种能够进一步给使用者带来安心感的吸收性物品。
一技术方案的吸收性物品具备无纺布，所述无纺布含有有机棉纤维，所述有机棉纤维在所述无纺布内形成有多个纤维块，所述纤维块构成为能够从外部视觉识别，所述无纺布中的所述纤维块的部分的透光率比所述无纺布中的不存在所述纤维块的部分的透光率低。
一技术方案的吸收性物品的包装体具有上述的吸收性物品和用于包装所述吸收性物品的包装袋，其中，在所述包装袋标注有使使用者识别到所述有机棉纤维的使用的标记。
附图说明
图1是一实施方式的吸收性物品的俯视图。
图2是从与图1相反的那一侧观察到的吸收性物品的俯视图。
图3是表示构成吸收性物品的无纺布的截面的示意图。
图4是表示一实施方式的吸收性物品的截面的示意图。
图5是表示一实施方式的吸收性物品的包装体的图。
具体实施方式
根据本说明书和所附附图的记载，至少以下的事项能够明确。
一种吸收性物品，其具备无纺布，其中，所述无纺布含有有机棉纤维，所述有机棉纤维在所述无纺布内形成有多个纤维块，所述纤维块构成为能够从外部视觉识别，所述无纺布中的所述纤维块的部分的透光率比所述无纺布中的不存在所述纤维块的部分的透光率低。
由有机棉纤维形成的纤维块的部分的透光率比其周围的部分的透光率低，因此使用者能够从外部容易地视觉识别纤维块。由此，使用者能够真实地感受到在使用有机棉纤维，对于产品能够进一步获得安心感。
根据优选的一技术方案，所述多个纤维块在所述吸收性物品的厚度方向上偏向所述吸收性物品的表面侧地设置。纤维块偏向于吸收性物品的表面侧地设置，因此使用者能够从外部更容易地视觉识别纤维块。
根据优选的一技术方案，吸收性物品具有与所述无纺布重叠的着色片，所述着色片在所述吸收性物品的厚度方向上设于比所述无纺布靠内侧的位置。在比无纺布靠内侧的位置设有着色片，因此能够使白色的纤维块从外部更加显眼。由此，使用者能够从外部更容易地视觉识别纤维块。
根据优选的一技术方案，所述纤维块的纤维密度为0.075g/cm3～0.2g/cm3。通过提高纤维块的纤维密度，能够使纤维块更加显眼。由此，使用者能够从外部更容易地视觉识别纤维块。
根据优选的一技术方案，所述无纺布还含有合成纤维，在所述纤维块的周围形成有具有比所述纤维块和所述合成纤维的密度小的密度的区域。在纤维块的周围存在密度较低的区域，因此能够使纤维块更加显眼。由此，使用者能够从外部更容易地视觉识别纤维块。
根据优选的一技术方案，所述无纺布含有合成纤维，所述有机棉纤维具有比所述合成纤维的平均纤维长度短的平均纤维长度。通过加长合成纤维12的平均纤维长度，能够提高无纺布和吸收性物品整体的强度，能够抑制纤维在制造中和使用中起毛。另一方面，通过缩短有机棉纤维10的平均纤维长度，能够减少合成纤维12彼此间的热熔接点，作为无纺布和吸收性物品实现适当的柔软性。
根据优选的一技术方案，所述有机棉纤维未与所述合成纤维热熔接。由有机棉纤维形成的纤维块未与合成纤维热熔接，因此纤维块与合成纤维之间的分界更加显眼。由此，使用者能够从外部更容易地视觉识别纤维块。
根据优选的一技术方案，一种吸收性物品的包装体，其具有上述形态的吸收性物品和用于包装所述吸收性物品的包装袋，其中，在所述包装袋标注有使使用者识别到所述有机棉纤维的使用的标记。
在包裹着吸收性物品的状态下，由于在包装袋标注有使使用者识别到有机棉纤维的使用的标记，因此也能够向使用者明示地告知在使用有机棉纤维。由此，能够给使用者带来对肌肤温和这样的安心感。
根据一技术方案，在所述吸收性物品标注有使使用者识别到所述有机棉纤维的使用的标记。
在从包装袋取出吸收性物品的状态下，由于在吸收性物品标注有使使用者识别到有机棉纤维的使用的标记，因此也能够向使用者明示地告知在使用有机棉纤维。由此，能够给使用者带来对肌肤温和这样的安心感。
以下，参照附图说明一实施方式的吸收性物品的详细情况。本发明的吸收性物品例如是一次性尿布、生理用卫生巾。在以下的实施方式中，列举一次性尿布为例进行详细说明。
此外，在以下的附图的记载中，对相同或者类似的部分标注相同或者类似的附图标记。但是，附图是示意性的，应留意各尺寸的比例等有时与现实是不同的。因而，应参考以下的说明来判断具体的尺寸等。另外，在附图相互之间也可能包含尺寸关系、比率互不相同的部分。
图1是一实施方式的吸收性物品1的俯视图。图2是从与图1相反的那一侧观察到的吸收性物品1的俯视图。吸收性物品1具有长度方向L和宽度方向W。长度方向L是从穿着者的前侧(腹侧)向后侧(背侧)延伸的方向、或者从穿着者的后侧向前侧延伸的方向。宽度方向W是与长度方向L正交的方向。以下，有时将使用时面向穿着者的肌肤的那一侧称为“肌肤面侧”。另外，有时将使用时朝向与穿着者的肌肤相反的方向的那一侧称为“非肌肤面侧”。
吸收性物品1具有表面片3、背面片4以及吸收体7。吸收体7设于表面片3与背面片4之间。表面片3由透液性的片材形成为佳。
在背面片4与吸收体7之间设有不透液性的防漏片5为佳。防漏片5至少覆盖吸收体7。背面片4覆盖防漏片5，延伸到比防漏片5靠外侧的位置。背面片4中的与防漏片5不重叠的区域在宽度方向W上的两外侧从长度方向L的前侧端部延伸至后侧端部。
表面片3和背面片4由无纺布形成。图3是表示表面片3或背面片4的截面的示意图。该无纺布包含有机棉纤维10和合成纤维12。此处，“有机棉”是指，在农业阶段基于国际基准(以CODEX为标准的各国的基准)对有机性进行认证，而证明了有机性的棉花。
合成纤维12是由热塑性树脂形成的纤维为佳。作为由热塑性树脂形成的纤维，例如可列举出烯烃系树脂、聚酯系树脂及聚酰胺系树脂以及它们的任意的组合。由热塑性树脂形成的纤维也可以利用亲水化剂进行亲水化处理。
合成纤维12的纤度没有特别限制，但从无纺布的强度、柔软性、肌肤触感、透液性等方面出发，优选的是处于1.1dtex～8.8dtex的范围，更优选为1.5dtex～4.6dtex的范围。
另外，也可以使用在具有2.0dtex以上的纤度的纤维中含有优选为10％～40％、更优选为20％～30％的具有小于2.0dtex的纤度的纤维而成的合成纤维。在该情况下，能够将平均纤维长度保持为较长，并且含有纤维长度较短的合成纤维。合成纤维12含有较细的支数的纤维，从而能够进一步抑制棉纤维的纤维块从无纺布脱落。
有机棉纤维10在无纺布内形成有多个纤维块11。有机棉纤维10具有比合成纤维12短的平均纤维长度为佳。由此，有机棉纤维10易于在无纺布内形成纤维块11。
由有机棉纤维10形成的纤维块11构成为能够从外部视觉识别。无纺布的纤维块11的部分的透光率比无纺布的不存在纤维块11的部分的透光率低。另外，在本说明书中，透光率是指可视透光率。
由有机棉纤维10形成的纤维块11的部分的透光率比其周围的部分的透光率低，因此使用者能够从外部容易地视觉识别纤维块11。由此，使用者能够真实地感受到在使用有机棉纤维10，对于产品能够进一步获得安心感。
另外，通过对无纺布照射光而利用肉眼进行确认，由有机棉纤维10形成的纤维块11的部分看起来比其周围的区域白，由此，能够确认纤维块11的部分的透光率与其周围的部分的透光率的不同。
如图3所示，多个纤维块11优选的是在吸收性物品1的厚度方向上偏向于吸收性物品1的表面侧地设置。此处，在厚度方向上将吸收性物品1三等分为表面侧的两层和中央的层，在多个纤维块11中的60％以上、优选为70％以上的纤维块存在于表面侧(外部侧)的层的情况下，认为多个纤维块11偏向于吸收性物品1的表面侧地设置。另外，纤维块存在于表面侧(外部侧)的层是指，纤维块的一部分存在于表面侧(外部侧)的层。
多个纤维块11偏向于吸收性物品1的表面侧地设置，由此，使用者能够从外部更容易地视觉识别纤维块。另外，从防止纤维块11从无纺布脱落的观点出发，优选的是，纤维块11未暴露于无纺布的表面。
为了确认纤维块11在厚度方向上的偏向，能够使用X射线CT。具体而言，对于含有测量对象的纤维块11的部分的无纺布，从无纺布的一个面以拍摄另一个面的方式利用X射线CT(例如，株式会社BEAMSENSE公司制FLEX-M863)进行拍摄。使用通过拍摄得到的图像，对同一无纺布内的10个点的纤维块11进行确认，能够判断纤维块11的偏向。另外，拍摄后的样品中的纤维块11通过利用后述的基于KayastainQ的染色方法，能够确认是否是有机棉纤维的纤维块11。
无纺布通常来说优选的是具有10g/cm3～60g/cm3的范围的单位面积重量。无纺布的厚度优选为0.5mm～5.0mm，更优选为0.8mm～3.5mm。无纺布的厚度能够使用测量压3g/cm2、具有直径10mm的测量端子的厚度计(株式会社尾崎制作所公司制Peacock表盘式厚度规)来测量。具体而言，对对象的无纺布的不同的10个点的厚度进行测量，根据其平均值得到“厚度”。
在具有上述厚度的无纺布中，优选的是使有机棉纤维相对于合成纤维的重量比例比25％小。在该条件下，通过使纤维块11偏向于无纺布的厚度方向上的中央地设置，能够进一步抑制有机棉纤维在制造工序中和产品使用中脱落。
有机棉纤维相对于合成纤维的重量比例能够利用以下的方法计算。首先，从无纺布获取单位面积(例如，5cm×5cm)的试片。从该试片获取有机棉纤维，对获取的有机棉纤维的重量进行测量。由此，能够计算有机棉纤维相对于合成纤维的重量比例。
另外，在从试片获取有机棉纤维时，需要判断合成纤维和有机棉纤维之间的不同。无纺布中的纤维是由有机棉纤维形成还是由合成纤维形成能够利用以下的方法进行确认。首先，称量出与试片同量的KayastainQ(日本化药株式会社制)，在KayastainQ的100倍重量的离子交换水(60～70度)中溶解。将该溶液加热，在溶液即将沸腾之前，将利用中性洗涤剂进行了清洗的试片投入到溶液内。之后，将溶液煮沸五分钟之后，将试片迅速地水洗·干燥。在该时刻，纤维块被染色为与纤维的类别相应的颜色。之后，能够基于KayastainQ在各种纤维上的色相进行纤维块的鉴别。
无纺布所包含的有机棉纤维10优选具有比合成纤维12的平均纤维长度短的平均纤维长度，并且/或者，具有比合成纤维12的纤度细的纤度。通过加长合成纤维12的平均纤维长度，并且/或者，加粗合成纤维12的纤度，能够提高无纺布整体的强度，能够抑制纤维在制造中和使用中起毛。另一方面，通过缩短有机棉纤维10的平均纤维长度，并且/或者，使有机棉纤维10的纤度变细，能够减少合成纤维12彼此间的热熔接点，作为无纺布实现适当的柔软性。
“平均纤维长度”设为依照JIS L 1015：2010的附录A的“A7.1纤维长度的测量”的“A7.1.1A法(标准法)在带有刻度的玻璃板上测量各个纤维的长度的方法”测量得到的平均纤维长度。另外，上述方法相当于与在1981年发行的ISO 6989相当的试验方法。
图3中示出了构成表面片3或背面片4的单层的无纺布的截面。代替于此，表面片3或者背面片4也可以具有将多个无纺布叠合而成的多层构造。
图4表示吸收性物品的局部(例如图1的F3-F3线)的截面。吸收性物品1优选具有与构成表面片3和/或背面片4的无纺布重叠的着色片300。着色片300在吸收性物品1的厚度方向上设于比构成表面片3和/或背面片4的无纺布靠内侧的位置。在比含有有机棉纤维10的无纺布靠内侧的位置设有着色片300，因此能够使白色的纤维块11更加显眼。由此，使用者能够从外部更容易地视觉识别纤维块11。
优选的是，由有机棉纤维10形成的纤维块11的纤维密度为0.075g/cm3～0.2g/cm3。通过提高纤维块11的纤维密度，能够使纤维块11更加显眼。由此，使用者能够从外部更容易地视觉识别纤维块11。
另外，从使纤维块11显眼的方面考虑，纤维块11的纤维密度优选比合成纤维12的纤维密度大0.02g/cm3以上。
如图3和图4所示，优选的是，在纤维块11的周围形成有具有比纤维块11和合成纤维12的密度小的密度的区域15。在纤维块11的周围存在密度较低的区域15，因此能够使纤维块11更加显眼。由此，使用者能够从外部更容易地视觉识别纤维块11。
优选的是，有机棉纤维10不与合成纤维12热熔接。由有机棉纤维10形成的纤维块11未与合成纤维12热熔接，因此纤维块11与合成纤维12之间的分界更加显眼。由此，使用者能够从外部更容易地视觉识别纤维块11。
另外，无纺布中的纤维块11是由有机棉纤维形成还是由合成纤维形成能够利用使用了上述的KayastainQ的方法进行。
图5是表示一实施方式的吸收性物品的包装体的图。包装体具有具备无纺布的吸收性物品1和用于包装吸收性物品1的包装袋100。吸收性物品1的结构如前述那样。
包装袋100收纳多个吸收性物品1。在包装袋100标注有使使用者识别到有机棉纤维10的使用的标记82。并且，优选的是，在吸收性物品1也标注有使使用者识别到有机棉纤维10的使用的标记84。标注于吸收性物品1的标记84是向使用者提供与标注于包装袋100的标记82同样的识别的标记。具体而言，标注于吸收性物品1的标记84是与标注于包装袋100的标记82相同或者类似的标记为佳。另外，只要能够使使用者识别到有机棉纤维10的使用，标注于吸收性物品1的标记84也可以与标注于包装袋100的标记82不同。
标记82、84也可以是由证明使用有机棉的情况的外部机构认定的标记。在该情况下，能够提高使用有机棉的可靠性，能够给使用者带来更高的安心感。
在图2和图5中，在吸收性物品1和包装袋100这两者标注完全相同的标记82、84。代替于此，标注于吸收性物品1的标记82不与标注于包装袋80的标记84完全相同，类似即可。在该情况下，也能够使使用者识别到有机棉纤维的使用。
由此，在利用包装袋100包裹着吸收性物品1的状态下，利用标注于包装袋100的标记82，能够使使用者识别到有机棉纤维的使用。另外，在从包装袋100取出吸收性物品1的状态下，也能够利用标注于吸收性物品1的标记84向使用者明示地通知使用有机棉纤维的情况。因而，能够给使用者带来对肌肤温和这样的安心感。
另外，多个吸收性物品1也可以在包装袋100内相互独立地包装。在该情况下，也可以在将吸收性物品1相互独立地包装的包装材料标注使使用者识别到有机棉纤维的使用的标记。
以上，采用上述实施方式对本发明进行了详细说明，但对于本领域的技术人员来说，本发明不限定于本说明书中所说明的实施方式是明确的。本发明能够在不脱离由权利要求书的记载规定的本发明的主旨和范围的前提下设为修改和变更技术方案进行实施。因而，本说明书的记载以例示说明为目的，对于本发明并不具有任何限制性的意义。
另外，2016年5月13日提出申请的日本特许出愿第2016-97495号的全部内容通过参照编入到本说明书中。
附图标记说明
1：吸收性物品
3：表面片
4：背面片
7：吸收体
10：有机棉纤维
11：纤维块
12：合成纤维
82：标记
84：标记
100：包装袋
300：有色片

Claims (5)

1.一种吸收性物品，其具备无纺布，其中，
所述无纺布含有有机棉纤维，
所述有机棉纤维在所述无纺布内形成有多个纤维块，
所述纤维块构成为能够从外部视觉识别，
所述无纺布中的所述纤维块的部分的透光率比所述无纺布中的不存在所述纤维块的部分的透光率低，
该吸收性物品具有与所述无纺布重叠的着色片，
所述着色片在所述吸收性物品的厚度方向上设于比所述无纺布靠内侧的位置，
所述无纺布含有合成纤维，
所述有机棉纤维未与所述合成纤维热熔接。
2.一种吸收性物品，其具备无纺布，其中，
所述无纺布含有有机棉纤维，
所述有机棉纤维在所述无纺布内形成有多个纤维块，
所述纤维块构成为能够从外部视觉识别，
所述无纺布中的所述纤维块的部分的透光率比所述无纺布中的不存在所述纤维块的部分的透光率低，
所述纤维块的纤维密度为0.075g/cm3～0.2g/cm3，
所述无纺布含有合成纤维，
所述有机棉纤维未与所述合成纤维热熔接。
3.一种吸收性物品，其具备无纺布，其中，
所述无纺布含有有机棉纤维，
所述有机棉纤维在所述无纺布内形成有多个纤维块，
所述纤维块构成为能够从外部视觉识别，
所述无纺布中的所述纤维块的部分的透光率比所述无纺布中的不存在所述纤维块的部分的透光率低，
所述无纺布含有合成纤维，
所述有机棉纤维具有比所述合成纤维的平均纤维长度短的平均纤维长度，
所述有机棉纤维未与所述合成纤维热熔接。
4.根据权利要求1～3中任一项所述的吸收性物品，其中，
所述多个纤维块在所述吸收性物品的厚度方向上偏向所述吸收性物品的表面侧地设置。
5.根据权利要求1～3中任一项所述的吸收性物品，其中，
在所述纤维块的周围形成有具有比所述纤维块和所述合成纤维的密度小的密度的区域。
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