JP2023514468A - 弾性ラミネートを製造する方法、および該方法により得られるラミネート - Google Patents
弾性ラミネートを製造する方法、および該方法により得られるラミネート Download PDFInfo
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Abstract
Description
Claims (18)
- 少なくとも1つの第1の上張レイヤ(2)および弾性フィルム(3)を有する弾性ラミネート(1)を製造する方法であって、
a)前記第1の上張レイヤ(2)を、第1の材料ウェブとして生産方向に沿って第1の延伸装置(4)に供給し、
b)次に、前記第1の上張レイヤ(2)を、前記第1の延伸装置(4)を用いて前記生産方向に対して横方向に延伸し、その際にひだ付けし、および
c)次に、ひだ付けされた前記第1の上張レイヤ(2)と、前記弾性フィルム(3)の形成を目的とする押出ウェブ(8)とを、前記上張レイヤ(2)がその前記押出ウェブ(8)に向かい合った面で部分(11)でのみ前記押出ウェブ(8)と接合されるように接合するか、
または、
d)次に、ひだ付けされた前記第1の上張レイヤ(2)と、事前に作製された弾性フィルム(3)とを、前記弾性フィルム(3)をその前記第1の上張レイヤ(2)に向かい合った面で少なくとも部分的に溶融し、前記第1の上張レイヤ(2)を部分(11)でのみ前記弾性フィルム(3)の少なくとも部分的に溶融された面に対して押し付け、その際に前記第1の上張レイヤ(2)を少なくとも部分的に前記弾性フィルム(3)のポリマーマトリックス内に埋め込むことによって接合する、
方法。 - 前記第1の延伸装置(4)が、2つの噛合するリングロール(5a、5b)から形成されている、請求項1に記載の方法。
- 前記第1の材料ウェブおよび前記押出ウェブ(8)または前記弾性フィルム(3)が、前記リングロールの一方(5a)と対向ロール(10)との間のロール間隙内で接合される、請求項2に記載の方法。
- 第2の上張レイヤ(16)を、第2の材料ウェブとして第2の延伸装置(17)に供給し、前記第2の延伸装置(17)によって生産方向に対して横方向に延伸し、その際にひだ付けし、次に、前記第2の上張レイヤ(16)をひだ付けされた状態で前記押出ウェブ(8)または前記弾性フィルム(3)と接合する、請求項1~3のいずれか一つに記載の方法。
- 前記第1の材料ウェブを、前記第1の延伸装置(4)によって100%から400%の間の値だけ延伸する、請求項1~4のいずれか一つに記載の方法。
- 第1の材料ウェブとして不織布が供給される、請求項1~5のいずれか一つに記載の方法。
- 前記不織布が、少なくとも1つのスパンレース層を有する、請求項6に記載の方法。
- 前記不織布が、少なくとも1つのスパンボンド層を有することを特徴とする、請求項6または7に記載の方法。
- 前記スパンボンド層が、捲縮繊維を含み、特に捲縮繊維から形成されていることを特徴とする、請求項8に記載の方法。
- 前記不織布が、少なくとも300%の破断点伸びを有し、前記不織布の力-伸び図が、100%伸びから300%伸びの間の範囲内に変曲点(WP)を有する、請求項6~9のいずれか一つに記載の方法。
- 前記不織布が、2成分繊維を含む、請求項6~10のいずれか一つに記載の方法。
- 前記押出ウェブ(8)または前記弾性フィルム(3)が、熱可塑性エラストマーからの層および少なくとも1つの上張層(14)とともに多層で形成される、請求項1~11のいずれか一つに記載の方法。
- 前記押出ウェブ(8)、前記弾性フィルム(3)が、ポリオレフィンから形成されている、請求項1~12のいずれか一つに記載の方法。
- 前記第1の上張レイヤ(2)を前記第1の延伸装置(4)に、ラミネート加工時の前記押出ウェブ(8)または前記弾性フィルム(3)の幅の90%から110%の間に対応する幅で供給する、請求項1~13のいずれか一つに記載の方法。
- 前記第1の材料ウェブが、前記第1の延伸装置(4)においてその縁部で固定される、請求項1~14のいずれか一つに記載の方法。
- 不織布製の少なくとも1つの第1の上張レイヤ(2)および弾性フィルム(3)を有する、請求項1~15のいずれか一つに記載の方法により得られるラミネートであって、
i)前記第1の上張レイヤ(2)および弾性フィルム(3)が、長手方向(L)に沿って延びている部分(11)でのみ別個の接着剤なしで前記フィルム(3)と接合されており、
ii)前記第1の上張レイヤ(2)が、横方向(Q)に沿って、接合された前記部分(11)の間に離れて存在するアーチ部分(12)を伴って波形に前記フィルム(3)上に配置されており、
iii)前記第1の上張レイヤ(2)が、前記離れて存在するアーチ部分(12)を伴う波形を含めて前記横方向(Q)に沿って少なくとも前記フィルム(3)の2倍の幅を有し、
iv)前記フィルム(3)が、その形成後に延伸されていない、
ラミネート。 - 前記第1の上張レイヤ(2)が、引き伸ばされていない状態の前記ラミネートの基礎面積に対して15g/m2から80g/m2の間の目付け量を有する、請求項16に記載のラミネート。
- 前記第1の上張レイヤ(2)が、延伸によって波形が付けられている、請求項16または17に記載のラミネート。
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GB376846A (en) * | 1931-04-21 | 1932-07-21 | Harold Jackson | Improvements in methods for imparting elasticity or stretch to paper or fabric |
US5167897A (en) | 1991-02-28 | 1992-12-01 | The Procter & Gamble Company | Method for incrementally stretching a zero strain stretch laminate web to impart elasticity thereto |
US5681302A (en) * | 1994-06-14 | 1997-10-28 | Minnesota Mining And Manufacturing Company | Elastic sheet-like composite |
US6537930B1 (en) * | 2000-05-18 | 2003-03-25 | Tredegar Film Products Corporation | Three-dimensional highly elastic film/non-woven composite |
US7507680B2 (en) * | 2003-11-12 | 2009-03-24 | Tredegar Film Products Corporation | Composite elastic web |
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