JP2014520589A - 弾性積層体を形成する方法 - Google Patents
弾性積層体を形成する方法 Download PDFInfo
- Publication number
- JP2014520589A JP2014520589A JP2014518484A JP2014518484A JP2014520589A JP 2014520589 A JP2014520589 A JP 2014520589A JP 2014518484 A JP2014518484 A JP 2014518484A JP 2014518484 A JP2014518484 A JP 2014518484A JP 2014520589 A JP2014520589 A JP 2014520589A
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- Prior art keywords
- elastic film
- elastic
- film
- stretching
- joining
- 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.)
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- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
- B29C55/06—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed
- B29C55/065—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed in several stretching steps
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- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F2013/15821—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing
- A61F2013/15934—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for making non-woven
- A61F2013/15991—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for making non-woven in making composite multi-layered product
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
-
- 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
- B29C66/71—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 composition of the plastics material of the parts to be joined
-
- 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
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
- B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
- B29C66/83411—Roller, cylinder or drum types
- B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
-
- 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
-
- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0253—Polyolefin fibres
-
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- 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
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/51—Elastic
-
- 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
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/514—Oriented
-
- 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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Abstract
Description
弾性フィルムを用意し、その弾性フィルムを接合ステーションの方へと機械方向に送る段階と、
前記弾性フィルムをその元の長さの1.5から8倍の延伸比で機械方向に延伸させ、それによって延伸フィルムを形成する段階と、
延伸フィルムと、少なくとも2つの不織ウェブとを積層させる段階と
を含み、
前記弾性フィルムを少なくとも2回の延伸段階で延伸させてから、前記弾性フィルムを前記少なくとも2つの不織ウェブと積層させ、全延伸の5から25%の間の延伸が、積層前の最後の延伸段階で行われる、方法が提供される。
用語「機械方向」または「MD」とは、材料、本発明の場合は弾性積層体が作製される方向を指す。用語「機械横断方向」または「CD」とは、機械方向に垂直な方向を指す。
弾性試験
この方法は、負荷除荷サイクルを繰り返したときに弾性材料がどのように振る舞うかを測定するものである。サンプルを所定の伸びまで延伸させ、0から前記所定の伸びまでの間で周期的な運動を実施する。所望の負荷除荷力が記録される。弛緩した材料の永久伸び、すなわち残留伸びを測定する。
・クロスヘッド速度:500mm/分
・クランプ間隔:50mm
・予荷重:0.05N
弾性フィルムと、弾性フィルムの各面に積層させた2つの不織層とを備える弾性積層体を作製した。弾性フィルムは、Berry Plasticsの、スチレンベースのコア層、およびポリオレフィンスキン層を有する30gsmの多層フィルムであった。不織層の一方は、Freudenbergの、コードLS4516(白)、グラメジ16gsm、繊度(titre)1.6〜1.8dtexのポリプロピレンスパンボンド不織層であり、不織層の他方は、Freudenbergの、コードLutrasil0519XF、グラメジ19gsm、繊度1.6〜1.8dtexのポリプロピレンスパンボンド不織層であった。
11 弾性フィルム
12、13 不織ウェブ(繊維不織層)
14 接合ステーション
15 超音波ホーン
16 パターン付きロール
17、18、19、20 延伸ロール
21、22、23 ガイドロール
24 接合要素
25 孔
26 パンツ型吸収性物品
27 シャシ
28 前部パネル
29 後部パネル
30 股部分
31 弾性腰部バンド
32 コア領域
33 吸収性コア
34 液体不浸透性バックシート
35 弾性部材
37 超音波溶接
38 弾性側部パネル
39 前部本体パネル
40 後部本体パネル
41 股部分
42 吸収性コア
Claims (8)
- 少なくとも1つの弾性フィルム(11)と、前記弾性フィルム(11)の各面に積層させた少なくとも2つの不織ウェブ(12、13)とを備える弾性積層体(10)を形成する方法であって、
弾性フィルム(11)を用意し、前記弾性フィルム(11)を接合ステーション(14)の方へと機械方向に送る段階と、
前記弾性フィルム(11)をその元の長さの1.5から8倍の延伸比で前記機械方向に延伸させ、それによって延伸フィルムを形成する段階と、
前記延伸フィルムと、前記少なくとも2つの不織ウェブ(12、13)とを前記接合ステーション(14)で積層させる段階と
を含む方法において、
前記弾性フィルム(11)を少なくとも2回の延伸段階で延伸させてから、前記弾性フィルム(11)を前記少なくとも2つの不織ウェブ(12、13)と積層させ、全延伸の5から25%の間の延伸が、前記接合ステーション(14)での積層の前の最後の延伸段階で行われることを特徴とする、方法。 - 前記弾性フィルム(11)と、前記少なくとも2つの不織ウェブ(12、13)とが、熱接合または超音波溶接によって、複数の接合要素(24)を備える、ある接合パターンで積層されることを特徴とする、請求項1に記載の方法。
- 前記接合要素(24)の少なくともいくつかのところで、またはその近傍で、前記弾性フィルム(11)に孔(25)が形成され、前記弾性フィルムが延伸の結果として破断することによって前記孔が生じることを特徴とする、請求項2に記載の方法。
- 前記弾性フィルム(11)が、少なくとも2個の延伸ロール(17〜20)を通過してから前記接合ステーション(14)に入り、前記最後の延伸段階が、最後の延伸ロール(20)と前記接合ステーション(14)との間で行われることを特徴とする、請求項1から3のいずれか一項に記載の方法。
- 前記弾性フィルム(11)が、少なくとも3個の延伸ロール(17〜20)を通過してから前記接合ステーション(14)に入ることを特徴とする、請求項4に記載の方法。
- 前記弾性フィルム(11)が、少なくとも3回の段階で延伸されてから前記接合ステーション(14)に入ることを特徴とする、請求項5に記載の方法。
- 隣接する延伸ロール(17〜20)間の自由長(a)が、10から150mmの間であることを特徴とする、請求項4から6のいずれか一項に記載の方法。
- 前記積層体(10)の坪量が、40から100g/m2の間であり、前記弾性フィルム(11)の坪量が、20から60g/m2の間であることを特徴とする、請求項1から7のいずれか一項に記載の方法。
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| PCT/SE2011/050878 WO2013002691A1 (en) | 2011-06-30 | 2011-06-30 | Method of forming an elastic laminate |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20140130956A1 (en) | 2014-05-15 |
| EP2726037A4 (en) | 2014-12-24 |
| RU2014103033A (ru) | 2015-08-10 |
| US9199410B2 (en) | 2015-12-01 |
| EP2726037A1 (en) | 2014-05-07 |
| EP2726037B1 (en) | 2018-11-21 |
| PL2726037T3 (pl) | 2019-03-29 |
| AU2011372077A1 (en) | 2013-12-19 |
| AU2011372077B2 (en) | 2016-05-12 |
| JP6392118B2 (ja) | 2018-09-19 |
| CN103635167A (zh) | 2014-03-12 |
| BR112013033633B1 (pt) | 2020-09-29 |
| RU2566929C2 (ru) | 2015-10-27 |
| CN103635167B (zh) | 2018-06-05 |
| WO2013002691A1 (en) | 2013-01-03 |
| BR112013033633A2 (pt) | 2017-01-24 |
| BR112013033633B8 (pt) | 2020-10-20 |
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