JP5972968B2 - ウェブを変形させるための方法及び装置 - Google Patents
ウェブを変形させるための方法及び装置 Download PDFInfo
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Description
用語「吸収性物品」とは、生理用ナプキン、パンティライナー、タンポン、陰唇間装置、創傷ドレッシング、おむつ、成人用失禁物品、拭きとり用品などの吸収性物品を含む。更にまた、本明細書において記載される方法及び装置によって製造される吸収性物品は、磨き粉パッド、ドライモップパッド(例えば、SWIFFER(登録商標)パッド)などの、他のウェブにおいて使用され得る。このような吸収性物品の少なくともいくつかは、経血、又は血液、膣排出物、尿、及び糞便などの、体液の吸収を意図されている。拭き取り用品は、体液を吸収するために使用されてもよく、又は洗浄表面などの他の目的のために使用されてもよい。上記の様々な吸収性物品は典型的には、液体透過性シート、トップシートに接合された液体不透過性バックシート、及びトップシートとバックシートとの間の吸収性コアを含む。
本発明は、変形したウェブ材料並びにウェブを変形させるための方法及び装置を対象とする。ウェブに追加的な特性をもたらす、ウェブ内の新しい構成を形成することができる、方法及び装置が開示される。用語「変形されたウェブ材料」が本明細書において使用されるとき、このような変形された材料による吸収性物品に関し、吸収性部材(又は非吸収性構成要素)などの構成要素を生成することが目的であることが理解されるべきである。このような場合、変形したウェブ材料は、吸収性物品のための個別の構成要素へと切断される。変形したウェブ材料はまた、包装材料及びゴミ袋が挙げられるがこれらに限定されない、吸収性物品以外の製品に使用され得る。
先行技術の手法は、機構の配置が制御された、明確に画定された混合機構を形成するために好適ではない。したがって、機構の2つ以上のセットの形成のより良い独立した制御を可能にするプロセスを設計することが望ましい。機構の各セットの形成のより良い独立した制御を達成するための2つの手法が提示される。1つの手法は、独立の雄型形成要素を含む2つのロールを備える単一のニップを利用し、少なくとも1つのロールが2つ以上の突出リッジを含む。第2手法は、マルチヒット(マルチニップ)構成を含み、これは機構の多数のセットの配置及び方向付けの制御を可能にする。これらの手法のそれぞれは、機構の所望の大きさ及び/又は形状が達成されるように、機構の各セットの形成に対する独立した制御、及びウェブのロールに対するより良好なパターン配置を可能にし得る。
以下の図は、特定のロール構成、及びこれにより形成され得る変形されたウェブ材料の非限定的な実施例を示す。
図14は、間に単一のニップNを形成する、ロールの単一のペアを含む、装置160の実施例を示す。ロールは、ウェブの表面に対して異なる方向で向けられた、少なくとも2つの変形部のセットを有するように、ウェブを変形させるように構成されている。これは、ロール162の1つに、ロール周辺部に延びる複数のリッジ164及び溝166、並びにリッジ164の上面から外側に延びる複数の第1の離間した形成要素168を提供する工程と、第2ロール170に複数の第2形成要素172をその表面上に提供することであって、第2形成要素の先端部が、第1ロール162のリッジ164の少なくともいくつかの上面を超える深さで第1ロールの軸に向かって、内側に延びる工程と、によって達成され得る。
本明細書における関心の方法はまた、多数の変形工程を使用し得る。このような多数の変形工程は、本記載の前の項において記載される任意の好適な装置によって実行され得る。多数の変形工程を使用する方法が、標準的なネスト状構成において比較的少数のロールを有するネスト化された装置において実行されるものとして示されるが、これは例示の単純化のために行われ、本明細書において記載される装置のいずれか(例えば、複合、閉ループ、及び共有バンク装置)が、所望の変形を実行するために任意の好適な数のロールで使用され得ることを理解するべきである。
変形されたウェブ材料の多くの別の実施形態、及びこれを作製する方法が可能である。
Claims (10)
- ロールの間にニップを形成する、2つの係合する逆回転ロールを含む装置であって、前記装置は、
a)ほぼ円筒形の第1ロールであって、前記第1ロールは表面、周辺部、及び軸を有し、前記第1ロールは、
前記ロールの前記表面上の複数のリッジ及び溝であって、前記リッジは上面を有し、前記溝は下面を有する、リッジ及び溝、並びに
前記リッジの前記上面から外側に延びる複数の第1の離間した形成要素であって、前記第1形成要素は先端部を有し、前記リッジの前記上面は前記形成要素の前記先端部と、前記溝の前記下面との間に配置される、複数の第1の離間した形成要素、を含む、第1ロールと、
b)ほぼ円筒形の第2ロールであって、前記第2ロールは前記第2ロールの表面上の複数の独立の第2形成要素を有し、前記第2形成要素は先端部を有し、前記第2形成要素の前記先端部は、前記第1ロールの前記リッジの少なくともいくつかの上面を超える深さまで、前記第1ロールの前記軸に向かって内側に延びる、第2ロールと、を含むことを特徴とする、装置。
- 前記リッジの前記上面と、前記溝の前記下面との間の距離が、前記第1ロールの周辺部で実質的に同じである、請求項1に記載の装置。
- 前記リッジの前記上面と、前記溝の前記下面との間の距離が、前記第1ロールの前記周辺部で異なる、請求項1に記載の装置。
- 装置を使用するウェブを変形させるためのプロセスであって、前記プロセスは、2つの係合ロールの間に形成されるニップに前駆体ウェブを送達する工程を含み、前記装置は、
a)ほぼ円筒形の第1ロールであって、前記第1ロールは表面、周辺部、及び軸を有し、前記第1ロールは、
前記ロールの前記表面上の前記ロールの前記周辺部で延びる複数のリッジ及び溝であって、前記リッジは上面を有し、前記溝は下面を有する、複数のリッジ及び溝、並びに
前記リッジの前記上面から外側に延びる複数の第1の離間した形成要素であって、前記第1形成要素は先端部を有し、前記リッジの前記上面は前記形成要素の前記先端部と、前記溝の前記下面との間に配置される、複数の第1の離間した形成要素、を含む、第1ロールと、
b)ほぼ円筒形の第2ロールであって、前記第2ロールは前記第2ロールの表面上に複数の独立の第2形成要素を有し、前記第2形成要素は先端部を有する、第2ロールと、を含み、
前記ウェブが前記ニップに送達されるとき、前記第2形成要素の前記先端部は前記第1ロールの前記リッジの少なくともいくつかの上面を超える深さまで、前記第1ロールの前記軸に向かって内側に延び、前記ウェブは(i)複数の離間した第1機構を形成するための、複数の離間した第1位置の前記第1形成要素、及び(ii)複数の離間した第2機構を形成するための、前記第1位置と異なる位置の前記第2形成要素により変形され、前記第2機構は前記第1機構の間に分布することを特徴とする、プロセス。
- 前記第2ロールは、
前記第2ロールの前記表面上の前記ロールの前記周辺部で延びる複数のリッジ及び溝であって、前記リッジは上面を有し、前記溝は下面を有する、複数のリッジ及び溝を更に含み、
前記第2形成要素は、互いに離間し、及び、前記第2ロールの前記リッジの前記上面から外側に延び、前記リッジの前記上面は、前記第2形成要素の前記先端部と、前記第2ロールの前記溝の前記底面との間に配置される、請求項4に記載のプロセス。 - 前記第1ロールはまた、追加的なロールとニップを形成し、前記第1ロールと前記追加的なロールとの間の前記ニップは、第1ニップを含み、前記第1ロールと前記第2ロールとの間の前記ニップは、第2ニップを含み、前記前駆体ウェブは、
a.最初に、前記第1ロールと前記追加的なロールとの間の前記第1ニップで、前記第1ロール上の前記第1形成要素によって変形され、
b.その後、前記第1ロールと前記第2ロールとの間の前記第2ニップで、前記第2ロール上の前記第2形成要素によって変形される、請求項4に記載のプロセス。 - 前記第1ロールはまた、追加的なロールとニップを形成し、前記第1ロールと前記第2ロールとの間の前記ニップは、第1ニップを含み、前記第1ロールと前記追加的なロールとの間の前記ニップは、第2ニップを含み、前記前駆体ウェブは、
a.最初に、前記第1ニップで、第1形成ロール及び第2形成ロール上の前記第1形成要素及び前記第2形成要素によって変形され、
b.その後、前記第1ロールと前記追加的なロールとの間の前記第2ニップで、前記第1ロール上の前記第1形成要素により、前記第1区域において更に変形される、請求項4に記載のプロセス。 - 第1および第2表面、機械方向および機械横方向の向きを有するウェブであって、該ウェブは、複数の離間した第1機構および複数の離間した第2機構を有し、前記複数の離間した第1機構は、前記機械方向および前記機械横方向において列に合わされ、前記複数の離間した第2機構は、前記機械方向および前記機械横方向において列に合わされ、前記複数の離間した第1機構は、前記ウェブの第1表面から外側に延び、前記複数の離間した第2機構は、前記ウェブの第2表面から外側に延びることを特徴とするウェブ。
- 前記複数の離間した第1機構および前記複数の離間した第2機構は、機械方向及び機械横方向の両方において、互いにオフセットしており、前記複数の離間した第1機構と前記複数の離間した第2機構との間の機械横方向間隔は1ピッチ未満である、請求項8に記載のウェブ。
- 前記リッジは、前記第1ロールの表面で、機械流れ方向または機械流れ方向に直交する方向に、連続して延びることを特徴とする、請求項1に記載の装置。
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CN103417337A (zh) | 2013-07-17 | 2013-12-04 | 厦门延江工贸有限公司 | 一种无纺布 |
US10258516B2 (en) | 2013-07-31 | 2019-04-16 | Kimberly-Clark Worldwide, Inc. | Treated three-dimensional apertured liners |
JP5960775B2 (ja) | 2013-12-27 | 2016-08-02 | 花王株式会社 | 立体シート及び立体シートの製造方法 |
EP3113741B1 (en) | 2014-03-06 | 2020-04-22 | The Procter and Gamble Company | Three-dimensional substrates |
CN203841923U (zh) | 2014-03-26 | 2014-09-24 | 厦门延江工贸有限公司 | 一种具有开孔结构的立体无纺布 |
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CN103717388A (zh) | 2014-04-09 |
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US9120268B2 (en) | 2015-09-01 |
JP2014516323A (ja) | 2014-07-10 |
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