JP6529543B2 - 織物の特性を示すフィルム材料、その製造のための方法および装置 - Google Patents
織物の特性を示すフィルム材料、その製造のための方法および装置 Download PDFInfo
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- JP6529543B2 JP6529543B2 JP2017132313A JP2017132313A JP6529543B2 JP 6529543 B2 JP6529543 B2 JP 6529543B2 JP 2017132313 A JP2017132313 A JP 2017132313A JP 2017132313 A JP2017132313 A JP 2017132313A JP 6529543 B2 JP6529543 B2 JP 6529543B2
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Description
(シンボルAおよびBの使用は、本発明の請求項での同じシンボルの使用とはもちろん異なる。)
図2 a、bおよびc、図4および図6は、説明をそれ以上要求しない。図1の顕微鏡写真は実施例1で説明されるように作成された単一のフィルムであり、直線的に伸びる領域(A)を示す。領域(A)は領域の幅全体にわたりそれぞれ波打っている。ウエブ(B)は図3に示されたインターメッシンググルーブドローラーで鋭い刃のクレスト間で薄く引っ張られている。ウエブ(B)はきわめて薄い「ネッキング−ダウン」ゾーン(C)を含む。写真には(A)の(B)の間に個別の分離帯があることを示す。高分子材料は白く着色され背景は黒い。
図8は、図2aおよびbの記述に関連して既に説明された。
平均ゲージ18.6ミクロン(測定値17.9g/m2)の、以下の組成を有するチューブラーフィルムが共押出された:
− 中央の層、合計の65%:
添加剤および白色マスターバッチを除いてはすべてHMWHDPE。
− 外側表面層、合計の15%:
m.f.iが1.0のLLDPE70%と、50−60℃の溶融するメタロセンPE 30%。
− 内側表面層、100%のLLDPE。
ブロー比率は2.7:1である。また、円弧ダイスオリフィスのギャップは1.0mmである。これは、約50の指数までチューブラーフィルムが薄くされ、強い主として長さ方向の溶融配向を得ることを意味する。
同じ押出フィルムを使用し、実施例1のように、45度の同じヘリカル切断、同じ直交積層、および横方向の延伸/積層プロセスが行われた。しかしヘリカル切断の前に、レイ−フラットチューブラーフィルムは、軸と平行に延びる歯を備えた溝が彫られたローラー間で、m.d.方向にシーケンシャルな方法で延伸された。これらの歯のクレストは、直径1.9mmの半円である。また、各ローラー上の溝のピッチは5.0mmである。フィルムへの入口および出口での張力、およびローラー間の互いの噛み合いにより、平均延伸比率は1.4:1とされた。延伸は、溝が彫られたローラーのうちの1つの丸い歯の上で起こる。一方、別のローラーの歯の上のフィルムは延伸されない。
生成された直交積層物の試験は以下に記録される。
2つの直交積層物および押し出されたチューブラーフィルムの引張試験がされた。また半球状の先端を有する直径10mmの「ホーン」の穴あけに対する穴あけ強度に関してテストされた。
相対的な試験の結果が次の表に示される。
押出フィルム、さらなる処理はない、ゲージ17.9g/m2
実施例1と同じ押出フィルムが使用され、実施例2と同じくシーケンシャルにm.d.方向に延伸された。ヘリカル切断は当初のm.d.に対して30度で行なわれる。30度配向のフィルムは、鋭い刃の溝が彫られたローラー間で一部分は単一のフィルムで一部分は直交ウエブで、横方向に延伸/エンボス加工された。溝が彫られたローラーおよび溝が彫られたローラープロセスは、以下の点でのみ実施例1に記載されたものと異なる:
2) 図9aの中で示された通りに、鋭い刃のクレストを備えた2つの溝が彫られたローラーのうちの1つは、波形の表面を有している。1.2mmの噛み合いは、波打ちのトップの部分に関する。
3) そのプロセスは外界温度25℃で行なわれる。生成された単一プライはゲージ9.5g/m2を有している。また、生成された直交積層物は19g/m2である。単一プライフィルムの顕微鏡写真は図12に示される。2つの生成物の構造は、顕微鏡で観察された時、図1に示される構造とほぼ同じに見えるが、以下の点で相違する:
2) 薄い「ウエブ」(B)は図1では(A)より狭いが、ここでは(A)よりわずかに広く、改良されたたわみ性を与える。
3) 波打ちの「振幅」、つまり一方の高い領域と反対側の隣接した高い領域の間の平均の垂直距離は、ここでは約0.5−0.6mmであり、フィルムに特に暖かい感触を与える。溝が彫られた鋭い刃のローラーのうちの1つの波打ちの「振幅」が、高々0.25mmであるので、この大きな「振幅」は注目すべきである。それは、ギヤーローラー延伸によって生産された各領域(A)内の、可変配向角度の結果である。
Claims (8)
- 以下の工程を含むバッグの製造方法:
互いの表面が重ねられた2以上の熱可塑性高分子のフィルムを、円またはヘリカルの溝が彫られたインターメッシングローラーを通して、延伸および積層を行うこと、
シーケンシャルにフィルムを横方向に延伸し、フィルムの互いに接触する表面層の間に中断された結合またはブロッキングを有するラミネートを形成すること、
ここで中断された結合またはブロッキングは、ローラーのクレスト上を通過した領域に局在化される、
ついで、フィルムの互いに接触する表面層の間の中断された結合またはブロッキングを保持しつつ、ラミネートをバッグにすること。 - フィルムの接触面の少なくとも1つが共押出層を含み、該層はフィルム間の結合を容易にするよう選択される、請求項1記載の方法。
- 溝が彫られたローラーは、平坦または鋭い端を有するクレストを備える、請求項1記載の方法。
- 中断された結合またはブロッキングは、鋭い端を有するクレスト上を通過した領域に局在化される、請求項3記載の方法。
- 溝が彫られたインターメッシングローラーの1つまたは両方のクレスト周縁が波打ち形状を有し、それぞれ横方向の幅の異なる延伸ゾーンを与え、異なる結合強度の中断された結合またはブロッキングの領域を与える、請求項1記載の方法。
- ローラーの軸に対して85度以下の角度で、フィルムが溝が彫られたインターメッシングローラーを通る、請求項1記載の方法。
- バッグがゴミ袋である、請求項1記載の方法。
- ラミネートされた層の配向方向が直交している、請求項1記載の方法。
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US20140138018A1 (en) | 2014-05-22 |
US8557364B2 (en) | 2013-10-15 |
TWI499497B (zh) | 2015-09-11 |
AU2009204794A1 (en) | 2009-07-23 |
JP6200006B2 (ja) | 2017-09-20 |
AU2009204794B2 (en) | 2014-07-10 |
EP2244874B1 (en) | 2012-08-29 |
RU2486058C2 (ru) | 2013-06-27 |
BRPI0906789A2 (pt) | 2015-07-14 |
CA2710689A1 (en) | 2009-07-23 |
CN101909856A (zh) | 2010-12-08 |
JP2018008517A (ja) | 2018-01-18 |
EP2244874B8 (en) | 2015-01-21 |
US20160023426A1 (en) | 2016-01-28 |
HK1151766A1 (en) | 2012-02-10 |
US20170136759A1 (en) | 2017-05-18 |
NZ587044A (en) | 2013-03-28 |
JP5873633B2 (ja) | 2016-03-01 |
CN101909856B (zh) | 2013-10-30 |
WO2009090208A1 (en) | 2009-07-23 |
US20100297387A1 (en) | 2010-11-25 |
US9108356B2 (en) | 2015-08-18 |
JP2016165885A (ja) | 2016-09-15 |
TW200948593A (en) | 2009-12-01 |
EP2244874A1 (en) | 2010-11-03 |
MX2010007733A (es) | 2010-11-12 |
US9815266B2 (en) | 2017-11-14 |
JP2011510835A (ja) | 2011-04-07 |
RU2010134368A (ru) | 2012-02-27 |
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