JP2019528919A - pH制御トップシートを有する吸収性用品 - Google Patents
pH制御トップシートを有する吸収性用品 Download PDFInfo
- Publication number
- JP2019528919A JP2019528919A JP2019515578A JP2019515578A JP2019528919A JP 2019528919 A JP2019528919 A JP 2019528919A JP 2019515578 A JP2019515578 A JP 2019515578A JP 2019515578 A JP2019515578 A JP 2019515578A JP 2019528919 A JP2019528919 A JP 2019528919A
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- JP
- Japan
- Prior art keywords
- nonwoven web
- water
- web material
- soluble polymer
- topsheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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Abstract
Description
トップシートのpHは、以下の方法を用いて非常に正確に測定することができる。
使用したpHメーターは、PHメーター、VWR(商標) SYMPHONY、SB 80PIであり、使用したpH電極は、HAMILTON FLATTRODEであった。
各新しい測定の最初にpHメーターロッドを脱イオン水に浸漬し、電極から水の小さな液滴を垂らし、その液滴は、測定時に不織ウェブ材料を湿らすために使用した。pHは、23℃、約50%RHで測定した。
乳酸及び界面活性剤を用い、場合によっては水溶性ポリマー、ポリビニルピロリドン(PVP)を用い、不織布を製造した。目的は、水溶性ポリマーの添加により貯蔵安定性が改善するかどうかを測定することであった。
・ 不織布2:11:湿潤剤(標準pp/スパンボンド/17g/m2、PHP26カチオン性界面活性剤(約0.15重量%))を有する不織布、Berry Plastic社から市販されている。
・ 不織布2:3:不織布(標準pp/スパンボンド/17g/m2)、Berry Plastic社から市販されている、緩衝乳酸(0.8g乾燥重量/m2)及び湿潤剤PHP26カチオン性界面活性剤(約0.15重量%)でコーティングされている。
・ 緩衝乳酸:(乳酸/乳酸ナトリウム、Corbion社から入手可能)を混合して1%w/w溶液とし、pHは3.2であった。
・ PVP:ddH20に溶解した40kDa(Mw)ポリビニルピロリドンの10%w/w溶液。
・ pHメーター:VWR symphony SB80P1
・ 吸収性コア:セルロース繊維300g及びSAP30%
Claims (20)
- 液体透過性トップシート、バックシート及び前記トップシートと前記バックシートの間に配置される吸収性コアを含むディスポーザブル衛生吸収性用品であって、前記トップシートが、ドライコーティングを有する不織ウェブ材料からなり、前記コーティングが、
a.5.5を超えないpKa値を有する有機酸及び/又はその塩、
b.界面活性剤、及び
c.水溶性ポリマーであって、該水溶性ポリマーがポリアルキレングリコールを含む場合に、前記ポリアルキレングリコールが、5,000〜1,000,000Daの重量平均分子量を有することを条件とする、水溶性ポリマー
を含む、ディスポーザブル衛生吸収性用品。 - 前記有機酸及び/又はその塩が、乳酸、乳酸の緩衝溶液、乳酸ナトリウム、乳酸カリウム及び乳酸カルシウム又はそれらの組み合わせから選択される、請求項1に記載のディスポーザブル衛生吸収性用品。
- 前記有機酸及び/又はその塩が、前記トップシートの少なくとも0.1g/m2、好ましくは0.1〜10g/m2、より好ましくは0.5〜5g/m2の量で存在する、請求項1又は2に記載のディスポーザブル衛生吸収性用品。
- 前記界面活性剤が、前記トップシートの少なくとも0.01重量%、好ましくは0.01〜3重量%、より好ましくは0.1〜1重量%の量で存在する、請求項1から3のいずれか一項に記載のディスポーザブル衛生吸収性用品。
- 前記界面活性剤が、非イオン性界面活性剤、カチオン性界面活性剤、両性イオン性界面活性剤又はアミンオキシド型界面活性剤、又はそれらの組み合わせからなる群から選択され、好ましくはカチオン性界面活性剤である、請求項1から4のいずれか一項に記載のディスポーザブル衛生吸収性用品。
- 前記水溶性ポリマーが、ポリアルキレングリコールを含まない、好ましくはポリエチレングリコール及びポリプロピレングリコールを含まない、及び/又はポリアクリル酸及びポリアクリル酸のコポリマーを含まない、請求項1から5のいずれか一項に記載のディスポーザブル衛生吸収性用品。
- 前記水溶性ポリマーが、ポリアクリルアミド及びそのコポリマー、ポリビニルアルコール、ポリアルキレングリコール、ポリアミン、ポリエチレンイミン、ポリマー性第四級アンモニウム化合物、ポリビニルピロリドン及びそのコポリマー、ポリビニルメチルエーテル/無水マレイン酸、多糖類及びそれらの2つ以上の組み合わせからなる群から選択される、請求項1から6のいずれか一項に記載のディスポーザブル衛生吸収性用品。
- 前記水溶性ポリマーが、ビニルピロリドンのホモポリマー又はコポリマーである、請求項1から7のいずれか一項に記載のディスポーザブル衛生吸収性用品。
- 前記水溶性ポリマーが、5,000〜1,000,000Da、好ましくは10,000〜500,000Da、より好ましくは20,000〜100,000Daの重量平均分子量を有する、請求項1から8のいずれか一項に記載のディスポーザブル衛生吸収性用品。
- 前記水溶性ポリマーが、前記トップシートの0.05〜10g/m2、好ましくは0.1〜5g/m2、より好ましくは0.3〜3g/m2の量で存在する、請求項1から9のいずれか一項に記載のディスポーザブル衛生吸収性用品。
- 前記バックシートが、液不透過性及び好ましくは蒸気透過性である、請求項1から10のいずれか一項に記載のディスポーザブル衛生吸収性用品。
- ドライコーティングを有する液体透過性不織ウェブ材料であって、前記コーティングが、
a.5.5を超えないpKa値を有する有機酸及び/又はその塩、
b.界面活性剤、及び
c.水溶性ポリマーであって、該水溶性ポリマーがポリアルキレングリコールである場合に、前記ポリアルキレングリコールが、5,000〜1,000,000Daの重量平均分子量を有することを条件とする、水溶性ポリマー
を含み、
前記液体透過性不織ウェブ材料が、好ましくは請求項2から10のいずれか一項に規定されたものである、液体透過性不織ウェブ材料。 - ドライコーティングを有する液体透過性不織ウェブ材料を製造する方法であって、
a.液体透過性不織ウェブ材料を用意する工程と、
b.不織ウェブに
i.5.5を超えないpKa値を有する有機酸及び/又はその塩、
ii.界面活性剤、及び
iii.水溶性ポリマーであって、該水溶性ポリマーがポリアルキレングリコールである場合に、前記ポリアルキレングリコールが、5,000〜1,000,000Daの重量平均分子量を有することを条件とする、水溶性ポリマー
を塗付する工程と
を含み、
前記液体透過性不織ウェブ材料が、好ましくは請求項12に記載されたものである、方法。 - 工程b)が、前記各化合物のうち1つ又は複数の液体組成物、好ましくは水性組成物を前記不織ウェブ材料に塗付することを含み、そのように処理した前記不織ウェブ材料を乾燥する工程c)が続く、請求項13に記載の方法。
- 工程b)が、前記有機酸及び/又はその塩、前記界面活性剤及び前記水溶性ポリマーを含む水性組成物を前記不織ウェブ材料に塗布することを含む、請求項13又は14に記載の方法。
- 工程b)が、
i.前記界面活性剤を含む第1の液体組成物を前記不織ウェブ材料に塗布すること、及び
ii.次いで、前記有機酸及び/又はその塩並びに前記水溶性ポリマーを含む第2の液体組成物を前記不織ウェブ材料に塗布すること
を含む、請求項13又は14に記載の方法。 - 工程b)が、
i.前記界面活性剤並びに前記有機酸及び/又はその塩を含む第1の液体組成物を前記不織ウェブ材料に塗布すること、及び
ii.次いで、水溶性ポリマーを含む第2の液体組成物を前記不織ウェブ材料に塗布すること
を含む、請求項13又は14に記載の方法。 - 液体組成物、好ましくは水性組成物が、浸漬、ソーキング、スロットコーティング及び/又はキスローリングによって独立に前記不織ウェブ材料に塗布される、請求項13又は17に記載の方法。
- ディスポーザブル衛生吸収性用品、好ましくは請求項1から11のいずれか一項に記載のディスポーザブル衛生吸収性用品を製造する方法であって、
a.請求項12に記載の、又は請求項13から18のいずれか1項に記載の方法により得られる、ドライコーティングを有する液体透過性不織ウェブ材料を用意する工程、及び
b.前記不織ウェブ材料とバックシート材料の間に吸収性コアを配置する工程
を含む、方法。 - 請求項12に記載の、又は請求項13から18のいずれか1項に記載の方法から得ることができる、液体透過性不織ウェブ材料の、ディスポーザブル衛生吸収性用品のトップシートとしての使用。
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US4798306A (en) * | 1987-03-04 | 1989-01-17 | General Motors Corporation | Fuel tank venting |
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US6156024A (en) * | 1996-12-03 | 2000-12-05 | The Procter & Gamble Company | Absorbent articles having lotioned leg cuffs |
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US9084838B2 (en) * | 2011-02-04 | 2015-07-21 | Kimberly-Clark Worldwide, Inc. | Feminine care absorbent article for use in warm climates |
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