TW202211889A - 體液吸液性物品之表面材料 - Google Patents
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Abstract
本發明之課題係:在不降低體液吸液性物品抵接至肌膚面的肌膚觸感之情況下,提升表面材料抵接至肌膚面時的耐摩耗性。
本發明之耐摩耗性優異的體液吸液性物品之表面材料,係體液吸液性物品之表面材料,且表面材料係在長纖維網表面上積層木棉纖維網的積層體;其中,積層體係由構成長纖維網的長纖維、與構成木棉纖維網的木棉纖維相互交絡成一體化;長纖維網的表觀密度係未滿10g/m
2,長纖維的單纖維纖度係1分特克斯(dtex)以上且未滿3dtex;長纖維網與木棉纖維網的質量比(長纖維網:木棉纖維網)係1:1.5~3.5;積層體的表觀密度係20g/m
2~35g/m
2。
Description
本發明係關於生理用衛生棉或拋棄式尿布、失禁墊等體液吸液性物品中,使用於會抵接至肌膚處的表面材料。
習知以來,作為生理用衛生棉或拋棄式尿布、失禁墊等體液吸液性物品的表面材料,有採用短纖維不織布或長纖維不織布。由於表面材料係直接接觸至肌膚,因而要求肌膚觸感佳者,木棉纖維具較佳之傾向。但是,僅由木棉纖維構成的不織布,相較於長纖維不織布之下,由於強度較差,因而本案申請人提案了由木棉纖維與長纖維不織布積層而成的表面材料(專利文獻1)。
[專利文獻1]日本實用新案登錄第3218416號公報
(發明所欲解決之問題)
本發明係利用專利文獻1所記載發明進行改良,課題在於:在不降低體液吸液性物品抵接至肌膚面的肌膚觸感之情況下,提升表面材料抵接至肌膚面時的耐摩耗性。
(解決問題之技術手段)
本發明為了達成上述課題,作為主旨的耐摩耗性優異之體液吸液性物品之表面材料,係體液吸液性物品的表面材料,且表面材料係在長纖維網表面上積層木棉纖維網的積層體;其中,
積層體係由構成長纖維網的長纖維、與構成木棉纖維網的木棉纖維相互交絡成一體化;
長纖維網的表觀密度係未滿10g/m
2,長纖維的單纖維纖度係1dtex以上且未滿3dtex;
長纖維網與木棉纖維網的質量比(長纖維網:木棉纖維網)係1:1.5~3.5;
積層體的表觀密度係20g/m
2~35g/m
2。
本發明係生理用衛生棉或拋棄式尿布、失禁墊等體液吸液性物品的表面材料,且表面材料係在長纖維網表面上積層木棉纖維網的積層體。又,構成長纖維網的長纖維、與構成木棉纖維網的木棉纖維係利用相互交絡而一體化為積層體。
長纖維網係由連續的複數支長纖維堆積而成,構成長纖維網的長纖維較佳係由丙烯系聚合體構成。其理由係由丙烯系聚合體構成的長纖維容易撓曲、柔軟性良好,因而可與木棉纖維良好地交絡,成為耐摩耗性優異的表面材料。丙烯系聚合體係可舉例如:丙烯均聚物、丙烯・α-烯烴無規共聚合體、或丙烯・α-烯烴嵌段共聚合體等,α-烯烴係可舉例如:乙烯、1-丁烯、1-戊烯、1-己烯、1-辛烯、4-甲基-1-戊烯等丙烯以外的α-烯烴。
本發明中構成長纖維網的長纖維之單纖維纖度係1dtex以上且未滿3dtex。藉由設為1dtex以上,在與木棉纖維進行交絡處理時,長纖維不會輕易被切斷,可在維持長纖維形態下與木棉纖維良好地進行交絡。另一方面,藉由設為未滿3dtex,由於長纖維具有柔軟性,對彎曲不會產生抵抗容易撓曲,因而可提升與木棉纖維的交絡性,可橫跨面方向全體進行緻密且均勻的交絡。又,如後述,由於長纖維網的表觀密度未滿10g/m
2,因而若構成長纖維網的長纖維之單纖維纖度超過3dtex,則單位面積所佔的長纖維支數會相對地減少,因此導致長纖維與木棉纖維的交絡處亦會相對地減少,結果長纖維網與木棉纖維網的交絡性差,不易獲得本發明目的之耐摩耗性優異的表面材料。從此種觀點而言,長纖維的單纖維纖度更佳係1dtex以上且2dtex以下。
長纖維網的表觀密度係未滿10g/m
2。藉由未滿10g/m
2,厚度變小,亦具有貫穿厚度方向的空隙,因而長纖維與木棉纖維可橫跨面方向全體緻密且均勻地交絡,成為耐摩耗性優異者。前述單纖維纖度的長纖維,若長纖維網之表觀密度超過10g/m
2,便不易保持貫穿厚度方向的空隙,較難達成本發明之目的。
本發明中的長纖維網最好使用利用所謂的紡絲黏合法製造而成者,亦可使用利用熱軋花加工,部分熱壓接而成者。
本發明中的木棉纖維網係積層於上述長纖維網表面上,利用交絡進行一體化。構成木棉纖維網的木棉纖維可使用公知物,較佳係使用未脫脂棉。所謂未脫脂棉,係指天然木棉纖維所具有的棉籽油等油脂成分未被完全除去的木棉纖維。若使用棉籽油等油脂成分已完全除去的脫脂棉,則木棉纖維自體容易吸收體液,在使用時會出現黏膩傾向。所以,在未脫脂棉的情況,具有降低木棉纖維自體的吸液性、減少黏膩的優點。又,為了降低木棉纖維自體的吸液性,亦可對木棉纖維賦予撥水劑。撥水劑較佳係賦予後述之特定油劑。又,木棉纖維較佳係使用漂白棉,特別係未脫脂漂白棉。其理由係利用漂白,木棉纖維的色彩便呈白色,而呈現清潔感的緣故。
作為撥水劑的油劑,較佳係賦予:(1)含親油性單硬脂酸甘油酯與聚氧乙烯月桂醚的油劑、(2)含硬脂酸醯胺與牛脂硬化油的油劑、(3)含硬脂酸醯胺與棕櫚油的油劑中之任一者。該等油劑係可單獨或混合賦予。藉由使用該特定油劑,便可適度賦予親水性與撥水性二項性能,能點式吸收滲出的體液。油劑中的親油性單硬脂酸甘油酯與聚氧乙烯月桂醚的量之比例、硬脂酸醯胺與牛脂硬化油的量之比例、以及硬脂酸醯胺與棕櫚油的量之比例,較佳係同量程度。
為了賦予油劑,一般而言,係將油劑作成液狀才進行塗佈。在親油性單硬脂酸甘油酯與聚氧乙烯月桂醚的情況,由於聚氧乙烯月桂醚屬於液體,因而最好在其中溶解或分散親油性單硬脂酸甘油酯才進行塗佈。又,在硬脂酸醯胺與牛脂硬化油的情況,最好使二者溶解於醋酸等溶媒中才進行塗佈。塗佈時,在木棉纖維網與長纖維網一體化而成的積層體中,最好塗佈於木棉纖維網側之面。
油劑的賦予量係任意,一般而言,相對於木棉纖維網質量較佳係0.05~1.5質量%。藉由賦予量設為0.05質量%以上,便可有效地發揮體液的點吸液性。另一方面,若賦予量超過1.5質量%,則纖維彼此容易滑行,會產生纖維彼此的糾結容易解開的傾向。
本發明的表面材料係構成長纖維網的長纖維、與構成木棉纖維網的木棉纖維,相互交絡成一體化的積層體。積層體的表觀密度係20g/m
2~35g/m
2,長纖維網與木棉纖維網的質量比(長纖維網:木棉纖維網)係1:1.5~3.5。藉由屬於積層體的表面材料之表觀密度達20g/m
2以上,則與肌膚接觸之一側會充分感受到木棉纖維的良好觸感,又藉由設在35g/m
2以下,被表面材料吸收的體液可迅速移往位於表面材料下的吸收體。又,本發明中,重要的是:積層體的表觀密度係20g/m
2~35g/m
2,且長纖維網與木棉纖維網的質量比(長纖維網:木棉纖維網)係1:1.5~3.5。相對於長纖維網的質量,木棉纖維網的質量為1.5以上,藉此可使長纖維網表面良好地覆蓋木棉纖維網,使與肌膚接觸之一側能保持木棉纖維的良好觸感。另一方面,相對於長纖維網的質量,木棉纖維網的質量為3.5以下,藉此構成長纖維網的長纖維、與構成木棉纖維網的木棉纖維便可緻密地交絡,藉由屬於短纖維的木棉纖維糾結於連續的長纖維,亦可對接觸至肌膚側的木棉纖維網側施加由摩擦生成的力,使木棉纖維的糾結成為不易解開之狀態,成為不易起毛球且耐摩耗性良好者。木棉纖維網的質量比,若相對於長纖維網的質量超過3.5,則木棉纖維的量會相對地增加,因而由與長纖維糾結而成的木棉纖維之比率亦會相對地減少,若施加表面摩擦力,便無法承受摩擦力,存在於表面側的木棉纖維容易移動,糾結被解開,而容易發生起毛球。
本發明的表面材料係具有上述構成,如圖1所示,可使用作為從體液滲出側起依序配置表面材料1、吸液體2及防漏材料3而成的體液吸液性物品。
(對照先前技術之功效)
根據本發明,可在不降低體液吸液性物品抵接至肌膚面的肌膚觸感之情況下,提升表面材料抵接至肌膚面時的耐摩耗性。
[實施例1]
[長纖維不織布之準備]
準備利用紡絲黏合法製成的聚丙烯長纖維不織布,係經施行熱軋花加工的長纖維不織布(表觀密度8g/m
2、長纖維之單纖維纖度1.5dtex、由熱軋花加工進行的壓接面積率18%)。另外,構成長纖維的聚丙烯之熔體流動速率(JIS-K7210 溫度230℃、荷重2.16kg)係60g/10分。
[木棉纖維網之準備]
準備表觀密度15g/m
2的木棉纖維網,係將平均纖維長25mm之漂白木棉,利用平行梳棉機施行開纖及集聚。
[積層體]
將上述準備的長纖維不織布與木棉纖維網施行積層,通過高壓水流噴出裝置(孔徑0.1mm的噴出孔依孔間隔0.6mm呈橫向一列配置的裝置),從木棉纖維網側依3MPa的噴出壓力施行高壓水流,接著依6MPa的噴出壓力施行高壓水流,接著反轉從長纖維不織布側依4MPa的噴射壓力施行高壓水流。此時,載置於由90篩目織物構成的支撐體上施行水流。然後,反轉載置於由15篩目織物構成的支撐體上,從木棉纖維網側施行4MPa的噴射壓力,藉此製成經交絡一體化的積層體。然後,依135℃加熱120秒,使積層體中含有的水分蒸發,獲得表面材料。
[實施例2]
在實施例1中,除了木棉纖維網係使用表觀密度20g/m
2者之外,其餘均依照與實施例1同樣的方式獲得表面材料。
[實施例3]
在實施例1中,除了木棉纖維網係使用表觀密度25g/m
2者之外,其餘均依照與實施例1同樣的方式獲得表面材料。
[實施例4]
在實施例2中,除了施行高壓水流時所使用的支撐體係在所有步驟中,均僅使用由90篩目織物構成的支撐體之外,其餘均依照與實施例2同樣的方式獲得表面材料。
[實施例5]
在實施例2所獲得的表面材料上,使用吻合式塗佈機塗佈含有親油性單硬脂酸甘油酯與聚氧乙烯月桂醚的油劑。該油劑的賦予量相對於表面材料質量係設為0.3質量%。另外,使用吻合式塗佈機施行塗佈時,塗佈面係設為長纖維網側之面,經賦予油劑後,依溫度130℃施行乾燥處理,獲得實施例5的表面材料。
[比較例1]
在實施例1中,除了長纖維不織布係使用表觀密度16g/m
2的聚丙烯長纖維不織布之外,其餘均依照與實施例1同樣的方式獲得比較例1的表面材料。
針對所獲得實施例1~5、比較例1的表面材料,施行耐摩耗性評價。評價係如下述。
[耐摩耗性(次)之評價]
針對實施例及比較例所獲得各表面材料,根據JIS L 0849,安裝於學振型摩擦堅牢度試驗機(大榮科學精器製作所公司製、型式「RT-300」)上,測定耐摩耗性。另外,安裝測試片時,在測試片下方預先鋪設胺甲酸乙酯氈,並依不會出現起皺之方式,將試料固定於具備學振型摩擦堅牢度試驗機的固定器具中。又,利用布黏貼帶覆蓋摩擦端子表面,對摩擦端子施加荷重300g,使布黏貼帶與試料抵接。然後,將摩擦端子依30次/min的往復速度進行滑動,每往復50次便停止試驗機的往復動作,目視確認測試片的表面狀態,直至確認到破裂為止前均持續往復動作。耐摩耗性的次數係例如若200次時沒有確認到破裂,但250次時有確認到破裂,便將耐摩耗性設為200次。然後,針對實施例及比較例的各表面材料,分別針對測試片2處施行測定,將該等的平均值設為耐摩耗性(次)。另外,即使往復次數超過500次,但目視仍無法確認到破裂時,便中止測定,將往復次數設為500次。所以,耐摩耗性(次)之值的最大值便為500次。
經施行耐摩耗性評價的結果,實施例1的表面材料係500次,實施例2的表面材料係500次,實施例3的表面材料係500次,實施例4的表面材料係425次,實施例5的表面材料係200次,比較例1的表面材料係125次,本發明之表面材料的耐摩耗性優異。
1:表面材料
2:吸液體
3:防漏材料
圖1係本發明之一例的體液吸液性物品之示意剖面圖。
1:表面材料
2:吸液體
3:防漏材料
Claims (6)
- 一種耐摩耗性優異的體液吸液性物品之表面材料,係體液吸液性物品之表面材料,且表面材料係在長纖維網表面上積層木棉纖維網的積層體;其中 積層體係由構成長纖維網的長纖維、與構成木棉纖維網的木棉纖維相互交絡成一體化; 長纖維網的表觀密度係未滿10g/m 2,長纖維的單纖維纖度係1dtex以上且未滿3dtex; 長纖維網與木棉纖維網的質量比(長纖維網:木棉纖維網)係1:1.5~3.5; 積層體的表觀密度係20g/m 2~35g/m 2。
- 如請求項1之耐摩耗性優異的體液吸液性物品之表面材料,其中,長纖維係由丙烯系聚合體構成。
- 如請求項1或2之耐摩耗性優異的體液吸液性物品之表面材料,其中,木棉纖維網側係與肌膚接觸之一側。
- 如請求項1至3中任一項之耐摩耗性優異的體液吸液性物品之表面材料,其中,對積層體賦予油劑,該油劑係(1)含親油性單硬脂酸甘油酯與聚氧乙烯月桂醚之油劑、(2)含硬脂酸醯胺與牛脂硬化油之油劑、(3)含硬脂酸醯胺與棕櫚油之油劑中的任一者。
- 如請求項1至4中任一項之耐摩耗性優異的體液吸液性物品之表面材料,其中,木棉纖維係未脫脂且經漂白。
- 一種體液吸液性物品,係在請求項1至5中任一項之表面材料下方,依序配置吸液體、防漏材而成。
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