JP2013078647A - 吸収性の不連続的に分布している吸収性粒子状ポリマー材料を有する使い捨て吸収性物品を作製するための方法 - Google Patents
吸収性の不連続的に分布している吸収性粒子状ポリマー材料を有する使い捨て吸収性物品を作製するための方法 Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61F13/00—Bandages or dressings; Absorbent pads
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B5/30—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being formed of particles, e.g. chips, granules, powder
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- A—HUMAN NECESSITIES
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Abstract
【解決手段】印刷ロール内の複数のリザーバから支持体のグリッド上に配置された基材上に吸収性粒子状ポリマー材料を載置させ、複数のクロスバーの間を延びる溝を形成するように、互いに平行に延びると共に間隔をあけた複数のクロスバーを含み、複数のリザーバは平行に延びると共に間隔をあけた列を含む配列に配置される。支持体及び印刷ロールは、複数のクロスバーが複数のリザーバの列に平行になるように配列され、吸収性粒子状ポリマー材料が複数の第1クロスバーの間に第1基材上の列に集まるように基材上に載置される。熱可塑性接着剤材料は、吸収性粒子状ポリマー材料及び基材上に載置されて、基材上の吸収性粒子状ポリマー材料を覆い吸収層を形成する。
【選択図】図1
Description
「吸収性物品」とは、身体排出物を吸収しかつ封じ込める器具を指し、より具体的には、着用者の身体に接して又は近接して配置されて、身体から排出される排出物を吸収しかつ封じ込める器具を指す。吸収性物品としては、おむつ、トレーニングパンツ、成人用失禁下着、女性用衛生製品、胸パッド、ケアマット、よだれ掛け、創傷包帯製品、及び同種のものを挙げることができる。吸収性物品としては、床洗浄物品、食品産業物品などを更に挙げることができる。本明細書で使用するとき、用語「体液」又は「身体排出物」とは、尿、血液、膣排泄物、母乳、汗及び糞便を包含するが、これらに限定されない。
図1は、本発明のある実施形態によるおむつ10の平面図である。おむつ10は、その広げられた非収縮(弾性による収縮がない)状態で示され、おむつ10の一部は、おむつ10の下層構造をより明瞭に示すために、切り取られている。着用者に接触するおむつ10の部分は、図1において観察者の方を向いている。おむつ10は、通常、シャーシ12、及びシャーシに配置される吸収性コア14を含み得る。
本発明の一実施形態による吸収性コア14を作製するための印刷システム130は、図10に例示されており、一般に、吸収性コア14の第1吸収層60を形成するための第1印刷ユニット132と、吸収性コア14の第2吸収層62を形成するための第2印刷ユニット134と、を含み得る。
機器
・メスシリンダー
・ストップウォッチ(±0.1秒)
・はさみ
・ライトボックス
・ペン
・試験溶液:37℃の0.90%食塩水溶液
・NIST、DIN、JIS又はその他の同等の国家規格に準拠している金属定規
・内側が平らな表面であり、測定されるコアバッグの長さの最小長がn、最大長がn+30mm、幅が105±5mm、高さが30〜80mm、又はその等価値である、PVC/金属皿
・電子フォースゲージ(0〜50kgの範囲)
・湿潤不動化衝撃試験機(WAIIT)、デザインパッケージ番号BM−00112.59500−R01、T.M.G.Technisches Buero Manfred Grunaから入手可能。
標準実験室条件、温度:23℃±2℃、相対湿度:55%未満
1.トップシート側を上にして、製品を開ける。
2.おむつを広げ、およそ2.5cm毎にカフの弾性体を切って、シャーシの張力を無効にする。
3.プルアップ製品に関しては、サイドシームを開け、ウエストバンドを取り除く。
4.コアバッグを平らに長方形のトップシート側を上にして折り目なしにライトボックスの表面上に置く。
5.ライトボックスをオンにして、吸収性コアの外側縁部を明確に特定する。
6.定規を用いて、前部吸収性コア外側縁部及び後部吸収性コア外側縁部で線を引く。
7.2つの標線の間の距離(A)を測り、その値を2で割ると、距離(B)が計算される。
8.前部標線からコアバッグの中央に向かって、計算された距離(B)を測り、印をつける。この標線で横断方向に線を引く。
WAIIT較正:
1.スライド板が下部位置にあることを確認する。WAIIT試験機の前扉を開き、フォースゲージのフックをWAIITの上部サンプルクランプに接続させる。ばね秤を接続する前に、クランプが閉じていることを確認する。
2.ばね秤に両手を使って、スライド板を上部位置に向かって継続的に、またできるだけゆっくりと持ち上げる。実行中の平均値(m1)を0.02kg単位で記録する。
3.スライド板を下部位置までできるだけゆっくりと下ろし、実行中に読み取られた平均値(m2)を0.02kg単位で記録する。
4.m1〜m2のΔを計算し、0.01kgの単位で報告する。Δが0.6kg±0.3kgであるなら、測定を継続する。そうでない場合は、スライド板の調整が必要である。スライド板が下部位置にあることを確認し、汚染又は損傷に関してスライド通路を点検する。スライド通路に対するスライド板の位置が正しく調節されているかどうかを、板を振動させることによって点検する。容易な滑走のためには、いくらかの隙間が必要である。もしなければ、システムを再調整する。
・落高は50cmである。
・おむつの負荷(lD)はコア容量(cc)の73%である;lD=0.73×cc。
・コア容量(cc)は、cc=mSAP×SAPGVとして計算され、式中、mSAPは、おむつに存在する超吸収性ポリマー(SAP)の質量であり、SAPGVは、超吸収性ポリマーの自由膨潤容量である。超吸収性ポリマーの自由膨潤容量は、国際公開第2006/062258号に記載の方法で求められる。おむつに存在する超吸収性ポリマーの質量は、10個の製品に存在する平均質量である。
1.はかりを0にリセットし(風袋)、乾燥コアバッグをはかりに載せ、計量し0.1g単位で報告する。
2.メスシリンダーで適切な量の生理食塩水(脱イオン水中0.9%NaCl)を量る。
3.コアバッグをトップシート側を上にして平らにPVC皿内に置く。生理食塩水を均等にコアバッグの上に注ぐ。
4.PVC皿を取り、様々な方向に傾けて保持して、遊離した液体を吸収させる。ポリバックシートを有する製品は、バックシート下の液体が吸収されることができるように、2分間の最低待機時間後にひっくり返す必要がある。10分間(±1分間)待機して生理食塩水全てを吸収させる。何滴かはPVC皿に留まってもよい。均質の液体分配及びより少ない保留液体を確実にするために、規定されたPVC/金属皿のみを使用する。
5.はかりを0にリセットし(風袋)、湿潤したコアバッグをはかりに載せる。計量し0.1g単位で報告する。はかり上に納まるように、コアバッグを1回だけ折る。湿潤したコアバッグの重量が限界(「乾燥コアバッグの重量+おむつの負荷±4mL」として規定)外かどうかを確かめる。例えば、12gの乾燥コアバッグの重量+150mL負荷=162gの湿潤したコアバッグの重量。はかり上の実際の湿潤重量が、158gと166gとの間であるなら、そのパッドを振動に使用することができる。そうでなければ、そのパッドを廃棄し、次のパッドを使用する。
6.負荷されたコアバッグを取り、標線に沿って横断方向に切る。
7.湿潤したコアバッグの後部をはかりの上に載せる(m1)。計量し0.1g単位で報告する。
8.湿潤したコアを取り、末端封止側をWAIITのサンプルホルダーの上部クランプに固定する(コアの開放端は下に向く)。次に、製品が製品の全長に沿ってサンプルホルダーに固定されていることを確認しながら、コアの両側をサンプルホルダーの側部クランプで固定する。吸収性コア(不織布のみ)を固定しないよう確認するが、それは、一部の製品に関して、バリアレッグカフのみで製品を固定することを意味するためである。
9.スライド板が係合するまで、両手を使うことにより、スライド板を上部位置まで持ち上げる。
10.安全前扉を閉め、スライドブレードを解放する。
11.はかりを0にリセットし(風袋)、試験されたコアバッグをWAIITから取り出し、はかりに載せる(m2)。重量を0.1g単位で報告する。
12.工程7〜11を湿潤したコアバッグの前部で繰り返す。
1.乾燥コアバッグの重量を0.1g単位で記録する。
2.試験前(m1前部/後部)及び試験後(m2前部/後部)の湿潤重量を両方とも0.1g単位で記録する。
3.平均重量損失(Δm)をパーセントで計算し、0.1g単位で報告する:Δm=(m1前部+m1後部)−(m2前部+m2後部)
4.重量損失(Δmrel)をパーセントで計算し、1%単位で報告する:(Δmrel)=(((m1前部+m1後部)−(m2前部+m2後部))×100)/(m1前部+m1後部)
5.湿潤不動化(WI)をWI=100%−Δmrelとして計算し報告する。
Claims (6)
- 複数の第1クロスバーの間を延びる溝を形成するように、互いに実質的に平行に延びると共に間隔をあけた前記複数の第1クロスバーを含む第1グリッドを含む第1支持体を準備する工程と、
第1外周面と、前記第1外周面において互いに実質的に平行に延びると共に間隔をあけた列を含む配列に配置された複数の第1リザーバと、を有する、第1印刷ロールを準備する工程と、
前記複数の第1クロスバーが前記複数の第1リザーバの前記列に実質的に平行になるように前記第1支持体及び前記第1印刷ロールが配列されて、前記複数の第1リザーバから前記第1グリッド上に配置された第1基材上に吸収性粒子状ポリマー材料を載置させる工程であって、前記吸収性粒子状ポリマー材料が前記複数の第1クロスバーの間に形成された前記第1基材上の列に集まるように、前記吸収性粒子状ポリマー材料が前記第1基材上に第1パターンで載置される工程と、
前記吸収性粒子状ポリマー材料及び前記第1基材上に熱可塑性接着剤材料を載置させて、前記第1基材上の前記吸収性粒子状ポリマー材料を覆い、第1吸収層を形成する工程と、
複数の第2クロスバーの間を延びる溝を形成するように、互いに実質的に平行に延びると共に間隔をあけた前記複数の第2クロスバーを含む第2グリッドを含む第2支持体を準備する工程と、
第2外周面と、前記第2外周面において互いに実質的に平行に延びると共に間隔をあけた列を含む配列に配置された複数の第2リザーバと、を有する、第2印刷ロールを準備する工程と、
前記複数の第2クロスバーが前記複数の第2リザーバの前記列に実質的に平行になるように前記第2支持体及び前記第2印刷ロールが配列されて、前記複数の第2リザーバから前記第2グリッド上に配置された第2基材上に吸収性粒子状ポリマー材料を載置させる工程であって、前記吸収性粒子状ポリマー材料が前記第2支持体の前記複数の第2クロスバーの間に形成された前記第2基材上の列に集まるように、前記吸収性粒子状ポリマー材料が第2基材上に第2パターンで載置される工程と、
前記吸収性粒子状ポリマー材料及び前記第2基材上に熱可塑性接着剤材料を載置させて、前記第2基材上の前記吸収性粒子状ポリマー材料を覆い、第2吸収層を形成する工程と、
前記第1吸収層の前記熱可塑性接着剤材料の少なくとも一部分が前記第2吸収層の前記熱可塑性接着剤材料の少なくとも一部分に接触するように前記第1吸収層及び前記第2吸収層を共に並列関係に組み合わせる工程であって、前記吸収性粒子状ポリマー材料が、吸収性粒子状ポリマー材料領域内の前記第1基材と前記第2基材との間に配置され、前記吸収性粒子状ポリマー材料が、前記吸収性粒子状ポリマー材料領域にわたって実質的に連続的に分布される工程と、
を含み、
前記第1支持体の前記第1グリッドが機械方向及び前記機械方向に対して実質的に垂直な横断方向に延び、前記溝が前記複数の第1クロスバーの間を前記第1グリッドの前記横断方向に延びるように前記複数の第1クロスバーが前記第1グリッドの前記横断方向に延びると共に間隔をあけ、
前記第2支持体の前記第2グリッドが機械方向及び前記機械方向に対して実質的に垂直な横断方向に延び、前記溝が前記複数の第2クロスバーの間を前記第2グリッドの前記横断方向に延びるように前記複数の第2クロスバーが前記第2グリッドの前記横断方向に延びると共に間隔をあけ、
前記第1印刷ロールの前記外周面が機械方向及び前記機械方向に対して実質的に垂直な横断方向に延び、前記複数の第1リザーバの列が前記第1外周面の前記横断方向に延びると共に、前記第1外周面の前記機械方向で互いに間隔をあけ、
前記第2印刷ロールの前記外周面が機械方向及び前記機械方向に対して実質的に垂直な横断方向に延び、前記複数の第2リザーバの列が前記第2外周面の前記横断方向に延びると共に、前記第2外周面の前記機械方向で互いに間隔をあけ、
前記複数の第1リザーバから前記吸収性粒子状ポリマー材料を載置させる工程が、前記第1グリッドの前記機械方向が前記第1外周面の前記機械方向に実質的に平行であり、前記第1グリッドの前記横断方向が前記第1外周面の前記横断方向に実質的に平行になるように前記第1支持体及び前記第1印刷ロールが配列されて、前記複数の第1リザーバから前記第1グリッド上に配置された前記第1基材上に前記吸収性粒子状ポリマー材料を載置させる工程を含み、
前記複数の第2リザーバから前記吸収性粒子状ポリマー材料を載置させる工程が、前記第2グリッドの前記機械方向が前記第2外周面の前記機械方向に実質的に平行であり、前記第2グリッドの前記横断方向が前記第2外周面の前記横断方向に実質的に平行になるように前記第2支持体及び前記第2印刷ロールが配列されて、前記複数の第2リザーバから前記第2グリッド上に配置された前記第1基材上に前記吸収性粒子状ポリマー材料を載置させる工程を含む、使い捨て吸収性物品の作製方法。 - 前記第1基材上の前記吸収性粒子状ポリマー材料の列が前記吸収性粒子状ポリマー材料の列の間の接合領域によって隔てられ、
前記複数の第1クロスバーがそれぞれ、実質的に前記第1グリッド全体にわたって延びる、実質的に直線的な外向き縁部を有し、
前記第1基材が前記複数の第1クロスバーの少なくともいくつかに直接接触するように、前記第1基材が前記第1グリッド上に配置され、
前記第1グリッドが、互いに間隔をあけ、前記複数の第1クロスバーの間を前記第1支持体の機械方向に延びる複数のスペーサを更に含む、請求項1に記載の方法。 - 前記第1基材及び前記第2基材上の前記吸収性粒子状ポリマー材料の列が前記吸収性粒子状ポリマー材料の列の間の接合領域によって隔てられ、前記組み合わせる工程が、前記第1基材上の前記吸収性粒子状ポリマー材料の列が前記第2基材上の吸収性粒子状ポリマー材料の列の間に実質的に列に平行に配置されるように、前記第1吸収層及び前記第2吸収層を共に組み合わせる工程を含む、請求項1又は2に記載の方法。
- 前記第1吸収層及び前記第2吸収層を組み合わせる工程が、前記吸収性粒子状ポリマー材料の前記第1パターン及び前記第2パターンが機械方向で互いにオフセットされるように前記第1吸収層及び前記第2吸収層を共に組み合わせる工程を含む、請求項1〜3のいずれか一項に記載の方法。
- 前記第1支持体が第1支持ロールであり、前記吸収性粒子状ポリマー材料を前記第1基材上に載置させる工程が、前記第1印刷ロールを回転させること及び前記第1支持ロールを回転させることによって前記第1基材上に前記吸収性粒子状ポリマー材料を載置させる工程を更に含み、
前記第2支持体が第2支持ロールであり、前記吸収性粒子状ポリマー材料を前記第2基材上に載置させる工程が、前記第2印刷ロールを回転させること及び前記第2支持ロールを回転させることによって前記第2基材上に前記吸収性粒子状ポリマー材料を載置させる工程を更に含む、請求項1〜4のいずれか一項に記載の方法。 - 前記複数の第1リザーバ及び前記複数の第2リザーバが円筒形又は円錘形である、請求項1〜5のいずれか一項に記載の方法。
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US20150075711A1 (en) | 2015-03-19 |
US8206533B2 (en) | 2012-06-26 |
US20180078426A1 (en) | 2018-03-22 |
CN102137647A (zh) | 2011-07-27 |
US20120325408A1 (en) | 2012-12-27 |
US10555840B2 (en) | 2020-02-11 |
WO2010027719A2 (en) | 2010-03-11 |
CA2735532A1 (en) | 2010-03-11 |
JP2012500669A (ja) | 2012-01-12 |
MX2011001979A (es) | 2011-04-05 |
CL2011000417A1 (es) | 2011-08-05 |
US8919407B2 (en) | 2014-12-30 |
RU2011103969A (ru) | 2012-10-10 |
BRPI0917994B1 (pt) | 2021-09-21 |
BRPI0917994A8 (pt) | 2021-02-17 |
US9849040B2 (en) | 2017-12-26 |
EP2317963A2 (en) | 2011-05-11 |
PL2317963T3 (pl) | 2022-01-31 |
JP5179666B2 (ja) | 2013-04-10 |
RU2479297C2 (ru) | 2013-04-20 |
BRPI0917994A2 (pt) | 2021-02-02 |
AU2009288466A1 (en) | 2010-03-11 |
CN102137647B (zh) | 2014-07-16 |
CA2735532C (en) | 2013-12-10 |
ZA201100806B (en) | 2014-07-30 |
EP2684548A1 (en) | 2014-01-15 |
EP2317963B1 (en) | 2021-12-01 |
US20100051166A1 (en) | 2010-03-04 |
AR074179A1 (es) | 2010-12-29 |
WO2010027719A3 (en) | 2010-06-03 |
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