JP5085542B2 - 吸収用品 - Google Patents
吸収用品 Download PDFInfo
- Publication number
- JP5085542B2 JP5085542B2 JP2008521350A JP2008521350A JP5085542B2 JP 5085542 B2 JP5085542 B2 JP 5085542B2 JP 2008521350 A JP2008521350 A JP 2008521350A JP 2008521350 A JP2008521350 A JP 2008521350A JP 5085542 B2 JP5085542 B2 JP 5085542B2
- Authority
- JP
- Japan
- Prior art keywords
- web material
- absorbent article
- type absorbent
- elastic
- pants
- 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.)
- Expired - Fee Related
Links
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Images
Classifications
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- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/431—Joining the articles to themselves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/729—Textile or other fibrous material made from plastics
- B29C66/7294—Non woven mats, e.g. felt
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/48—Wearing apparel
- B29L2031/4871—Underwear
- B29L2031/4878—Diapers, napkins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2310/00—Treatment by energy or chemical effects
- B32B2310/028—Treatment by energy or chemical effects using vibration, e.g. sonic or ultrasonic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2555/00—Personal care
- B32B2555/02—Diapers or napkins
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Description
「吸収用品」との用語は、着用者の肌に接して配置され、尿、ふん便および月経液のような身体滲出物を吸収しかつ保持する製品を意味する。本発明は主として使い捨て式吸収用品に関係し、これは、使用後に洗濯されたり、さもなければ吸収用品として使える状態に戻すか、あるいは再利用したりすることを意図していない用品を意味する。本発明は「パンツ型吸収用品」に関する。そうしたパンツ型吸収用品の例は、パンツ型おむつ、サニタリーパンツおよび失禁用パンツである。
液体浸透性表面シート20は不織布材(たとえばスパンボンド、メルトブローン、毛羽立て、水中絡み合い(hydroentangled)、湿式積層(wetlaid)など)から形成できる。適当な不織布材は、木材パルプまたはコットン繊維のような天然繊維から、ポリエステル、ポリエチレン、ポリプロピレン、ビスコースなどのような人工繊維から、あるいは天然繊維と人工繊維の混合物から形成できる。表面シート材はさらにトウ繊維から形成されてもよく、このトウ繊維は、たとえば欧州特許出願公開第1 035 818号明細書(EP-A-1 035 818)に開示されるように、ある接合パターンで互いに接合できる。表面シート材のさらなる例は、多孔質フォーム、穿孔プラスチックフィルムなどである。表面シート材に適した素材は、柔軟でかつ肌を刺激せず、しかも体液、たとえば尿または月経液が容易に浸透するようになされたものであるべきである。表面シートはさらに、吸収用品の別の部分においては異なっていてもよい。
吸収コア2の着衣に面する側において吸収アセンブリ3に含まれる液体不浸透性背面シート19は、液体不浸透性素材、たとえば薄いプラスチックフィルム(例としてポリエチレンあるいはポリプロピレンフィルム)、液体不透過性物質で覆われた不織布材、疎水性の不織布材(これは液体の浸透に抗する)あるいはプラスチックフィルムおよび不織布材からなるラミネート(積層体)からなる。背面シート19は通気性を有していてもよく、これによって吸収コアから蒸気を逃がすことが可能となり、その一方で液体がそれを通過するのは依然として阻止される。通気性を有する背面シート材の例としては、多孔質高分子フィルム、スパンボンドおよびメルトブローン層からなる不織布ラミネート、多孔質高分子フィルムおよび不織布からなるラミネートが挙げられる。背面シート19は好ましくは弾力性を持たない。
「吸収コア」は吸収用品の吸収アセンブリ中に配置される吸収体である。吸収コア2は一般的な種類のものであってもよい。普通に見られる吸収材料の例は、セルロース系綿毛状パルプ、ティッシュ層、高吸収ポリマー(いわゆる超吸収体)、吸収発泡材料、吸収不織材料などである。セルロース系綿毛状パルプを吸収コア内の高吸収ポリマーと組み合わせるのは普通のことである。高吸収ポリマーは、その重量の少なくとも約20倍の0.9重量パーセントの塩化ナトリウムを含む水溶液を吸収することが可能な水膨張可能な水不溶性の有機または無機材料である。高吸収材料として使用するのに適切な有機材料としては、多糖類、ポリペプチドなどの天然材料、および合成ヒドロゲルポリマーなどの合成材料を挙げることができる。このようなヒドロゲルポリマーとしてはたとえば、ポリアクリル酸、ポリアクリルアミド、ポリビニルアルコール、ポリアクリレート、ポリアクリルアミド、ポリビニルピリジンなどのアルカリ金属塩が挙げられる。他の適切なポリマーとしては、加水分解されたアクリロニトリルグラフト化でんぷん、アクリル酸グラフト化でんぷん、イソブチレン無水マレイン酸共重合体、およびその混合物が挙げられる。ヒドロゲルポリマーは、材料を実質的に不溶性にするように軽度に架橋されることが好ましい。好ましい高吸収材料はさらに、表面架橋され、それによって高吸収性粒子、繊維、薄片、球体などの外側表面または外郭は、高吸収体の内部より高い架橋密度を有する。高吸収材料は、粒子、繊維、薄片、球体などを含む吸収複合物で使用するのに適切な、あらゆる形態をしていてもよい。
〔弾性試験〕
本方法は、反復負荷・無負荷サイクル時に弾性材がどのように振る舞うかを測定するものである。試料は所定の伸びまで延伸され、そして0と当該所定伸びとの間の周期的動作が実行される。所望の負荷・無負荷力が記録される。弛緩した材料の永久すなわち残留伸びが測定される。
クロスヘッド速度:500mm/min
クランプ距離 :50mm
予荷重 :0.05N
溶着継ぎ目の引っ張り強度は国際出願PCT2004/001004号明細書に開示された方法に基づいて測定される(ASTM D 882参照)。矩形状の試験標本は、補強された溶着継ぎ目が標本を横切って(標本の縁部と実質的に直角をなして)延在するよう吸収用品から切り取られる。試験標本の幅は25.4mmであり、そして長さは、もし可能であるならば、引っ張り試験機器Instron4301のクランプ間距離よりも50mm大きなものである。図6および図7は、試験標本が機器のクランプにどのように取り付けられるかを示している。
2 吸収コア
3 吸収アセンブリ
4 長手方向側方縁部
5 前部
6 後部
7 股部
8 超音波溶着継ぎ目
9 弾性ラミネート
10 第1の弾性ウエブ材
11 第1の外側層
12 第2の外側層
13 弾性フィルム層
14 付加的層
15 ウエスト用開口部
16 脚用開口部
17 前側ウエスト部
17a,18a 超音波溶着継ぎ目
18 後側ウエスト部
19 液体不浸透性背面シート
20 液体浸透性表面シート
21 第2のウエブ材
Claims (23)
- パンツ型おむつ、サニタリーパンツあるいは失禁用パンツのようなパンツ型吸収用品(1)であって、
前記パンツ型吸収用品は、横方向(x)及び長手方向(y)を有し、前記パンツ型吸収用品は、前部(5)および後部(6)を具備してなり、前記吸収用品(1)はさらに、当該用品の長手方向(y)において前記前部(5)と前記後部(6)との間に配置された股部(7)を具備してなり、前記前部および前記後部は二つの対向する長手方向側方縁部(4)に沿って互いに接合されてウエスト用開口部(15)と一対の脚用開口部(16)とを形成しており、前記前部および前記後部(5;6)の少なくとも一方は、前記パンツ型吸収用品の少なくとも前記横方向(x)において弾性とされる第1の弾性ウエブ材(10)を具備してなり、
前記第1の弾性ウエブ材(10)は、前記吸収用品の前記横方向(x)において延在している少なくとも一つの溶着継ぎ目(8)に沿って、少なくとも一つの第2のウエブ材(21)に対して超音波溶着されており、前記第2のウエブ材(21)は前記第1の弾性ウエブ材(10)とは異なるものであって、前記第2のウエブ材(21)は弾力性を持たないか、あるいは前記第1の弾性ウエブ材(10)の弾力性とは異なる度合いの弾力性を有しており、
前記第1の弾性ウエブ材(10)と前記第2のウエブ材(21)との間の超音波溶着継ぎ目(8,17a,18a)は、少なくとも5N/25.4mmである、前記溶着継ぎ目と交差する方向、すなわち前記吸収用品の前記長手方向(y)における溶着強度を有するよう補強されており、
前記補強は、前記溶着継ぎ目(8,17a,18a)に対して接合されたウエブ材の付加的層(14)によって、又は前記溶着継ぎ目(8,17a,18a)の長さの50〜100%に沿って塗布された接着剤によって、実現されていることを特徴とする吸収用品(1)。 - 前記股部(7)は前記第2のウエブ材(21)を具備してなり、前記股部(7)は、前記吸収用品の前記横方向(x)において延在している超音波溶着継ぎ目(8)を介して前記前部(5)および前記後部(6)に対して溶着されていることを特徴とする請求項1に記載のパンツ型吸収用品(1)。
- 前記前部(5)および前記後部(6)の両方は、前記第1の弾性ウエブ材(10)を具備してなることを特徴とする請求項2に記載のパンツ型吸収用品(1)。
- 用品は、その長手方向(y)において前記股部(7)から離れた位置にある前記前部(5)の縁部に配置された前側ウエスト部(17)を具備してなり、前記前部(5)は前記第1の弾性ウエブ材(10)を具備してなり、前記前側ウエスト部(17)は前記第2のウエブ材(21)を具備してなり、かつ前記前側ウエスト部(17)は、前記吸収用品の前記横方向(x)において延在している超音波溶着継ぎ目(17a)を介して前記前部(5)に対して溶着されていることを特徴とする請求項1ないし請求項3のいずれか1項に記載のパンツ型吸収用品(1)。
- 用品は、その長手方向(y)において前記股部(7)から離れた位置にある前記後部(6)の縁部に配置された後側ウエスト部(18)を具備してなり、前記後部(6)は前記第1の弾性ウエブ材(10)を具備してなり、前記後側ウエスト部(18)は前記第2のウエブ材(21)を具備してなり、かつ前記後側ウエスト部(18)は、前記吸収用品の前記横方向(x)において延在している超音波溶着継ぎ目(18a)を介して前記後部(6)に対して溶着されていることを特徴とする請求項1ないし請求項4のいずれか1項に記載のパンツ型吸収用品(1)。
- 前記第1の弾性ウエブ材(10)はラミネート材(9)であることを特徴とする請求項1ないし請求項5のいずれか1項に記載のパンツ型吸収用品(1)。
- 前記ラミネート材(9)は、繊維素材からなる第1および第2の層(11,12)と、前記第1および第2の繊維層間に配置された弾性フィルム層(13)とからなることを特徴とする請求項6に記載のパンツ型吸収用品(1)。
- 前記第1の弾性ウエブ材は、吸収用品の総表面積の少なくとも20%に関して、前記前部(5)および前記後部(6)のただ一つの構成要素であることを特徴とする請求項2ないし請求項7のいずれか1項に記載のパンツ型吸収用品(1)。
- 前記第1の弾性ウエブ材は、吸収用品の総表面積の少なくとも25%に関して、前記前部(5)および前記後部(6)のただ一つの構成要素であることを特徴とする請求項8に記載のパンツ型吸収用品(1)。
- 前記第1の弾性ウエブ材は、吸収用品の総表面積の少なくとも30%に関して、前記前部(5)および前記後部(6)のただ一つの構成要素であることを特徴とする請求項9に記載のパンツ型吸収用品(1)。
- 前記第1の弾性ウエブ材は、吸収用品の総表面積の少なくとも40%に関して、前記前部(5)および前記後部(6)のただ一つの構成要素であることを特徴とする請求項10に記載のパンツ型吸収用品(1)。
- 前記第1の弾性ウエブ材(10)は通気性を有することを特徴とする請求項1ないし請求項11のいずれか1項に記載のパンツ型吸収用品(1)。
- 前記第1の弾性ウエブ材(10)は、少なくとも1500g/m224hの、ASTM E96-00 Procedure Dに基づく水蒸気透過率を有することを特徴とする請求項12に記載のパンツ型吸収用品(1)。
- 前記第1の弾性ウエブ材(10)は、少なくとも3000g/m224hの、ASTM E96-00 Procedure Dに基づく水蒸気透過率を有することを特徴とする請求項13に記載のパンツ型吸収用品(1)。
- 前記第2のウエブ材(21)は、前記第1の弾性ウエブ材(10)の弾力性よりも低い弾力性を有することを特徴とする請求項1ないし請求項14のいずれか1項に記載のパンツ型吸収用品(1)。
- 前記第2のウエブ材(21)は不織布材であることを特徴とする請求項1ないし請求項15のいずれか1項に記載のパンツ型吸収用品(1)。
- 前記第1の弾性ウエブ材(10)と前記第2のウエブ材(21)との間の前記超音波溶着継ぎ目(8,17a,18a)は、少なくとも7N/25.4mmである、前記溶着継ぎ目と交差する方向における溶着強度を有するよう補強されていることを特徴とする請求項1ないし請求項16のいずれか1項に記載のパンツ型吸収用品(1)。
- 前記第1の弾性ウエブ材(10)と前記第2のウエブ材(21)との間の前記超音波溶着継ぎ目(8,17a,18a)は、少なくとも9N/25.4mmである、前記溶着継ぎ目と交差する方向における溶着強度を有するよう補強されていることを特徴とする請求項17に記載のパンツ型吸収用品(1)。
- ウエブ材の前記付加的層(14)は、それが接合される前記溶着継ぎ目(8,17a,18a)の長さの少なくとも50%に沿って延在していることを特徴とする請求項1〜18のいずれか一項に記載のパンツ型吸収用品(1)。
- ウエブ材の前記付加的層(14)は、それが接合される前記溶着継ぎ目(8,17a,18a)の長さの少なくとも75%に沿って延在していることを特徴とする請求項19に記載のパンツ型吸収用品(1)。
- ウエブ材の前記付加的層(14)は、それが接合される前記溶着継ぎ目(8,17a,18a)の長さの少なくとも100%に沿って延在していることを特徴とする請求項20に記載のパンツ型吸収用品(1)。
- 前記補強は、前記溶着継ぎ目(8,17a,18a)の長さの70〜90%に沿って塗布された接着剤によって実現されていることを特徴とする請求項1ないし請求項21のいずれか1項に記載のパンツ型吸収用品(1)。
- 用品(1)はさらに吸収アセンブリ(3)を具備してなり、前記吸収アセンブリは、液体不浸透性背面シート(19)と、液体浸透性表面シート(20)と、両者間に封入された吸収コア(2)と、を具備してなることを特徴とする請求項1ないし請求項22のいずれか1項に記載のパンツ型吸収用品(1)。
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-
2005
- 2005-07-14 BR BRPI0520377-5A patent/BRPI0520377A2/pt not_active IP Right Cessation
- 2005-07-14 EP EP05758099.5A patent/EP1901691A4/en not_active Withdrawn
- 2005-07-14 CA CA002614723A patent/CA2614723A1/en not_active Abandoned
- 2005-07-14 AU AU2005334271A patent/AU2005334271B2/en not_active Ceased
- 2005-07-14 JP JP2008521350A patent/JP5085542B2/ja not_active Expired - Fee Related
- 2005-07-14 MX MX2007016475A patent/MX2007016475A/es active IP Right Grant
- 2005-07-14 CN CN2005800510535A patent/CN101222894B/zh not_active Expired - Fee Related
- 2005-07-14 WO PCT/SE2005/001160 patent/WO2007008128A1/en active Application Filing
-
2006
- 2006-04-24 TW TW095114528A patent/TW200701960A/zh unknown
- 2006-04-26 AR ARP060101675A patent/AR055921A1/es not_active Application Discontinuation
- 2006-07-13 MY MYPI20063346A patent/MY142964A/en unknown
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2008
- 2008-01-11 TN TNP2008000009A patent/TNSN08009A1/en unknown
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US8641695B2 (en) | 2014-02-04 |
MX2007016475A (es) | 2008-03-07 |
CN101222894B (zh) | 2011-03-02 |
US20080114325A1 (en) | 2008-05-15 |
JP2009501055A (ja) | 2009-01-15 |
EP1901691A4 (en) | 2013-07-10 |
MY142964A (en) | 2011-01-31 |
TW200701960A (en) | 2007-01-16 |
BRPI0520377A2 (pt) | 2009-05-05 |
AU2005334271A1 (en) | 2007-01-18 |
EP1901691A1 (en) | 2008-03-26 |
WO2007008128A1 (en) | 2007-01-18 |
CN101222894A (zh) | 2008-07-16 |
AU2005334271B2 (en) | 2012-02-02 |
CA2614723A1 (en) | 2007-01-18 |
TNSN08009A1 (en) | 2009-07-14 |
AR055921A1 (es) | 2007-09-12 |
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