JP2013082084A - 網状体 - Google Patents
網状体 Download PDFInfo
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- JP2013082084A JP2013082084A JP2011221990A JP2011221990A JP2013082084A JP 2013082084 A JP2013082084 A JP 2013082084A JP 2011221990 A JP2011221990 A JP 2011221990A JP 2011221990 A JP2011221990 A JP 2011221990A JP 2013082084 A JP2013082084 A JP 2013082084A
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- thermoplastic resin
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- 239000010410 layer Substances 0.000 claims abstract description 80
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 69
- 239000012790 adhesive layer Substances 0.000 claims abstract description 30
- -1 polyethylene terephthalate Polymers 0.000 claims abstract description 20
- 238000002844 melting Methods 0.000 claims abstract description 15
- 230000008018 melting Effects 0.000 claims abstract description 15
- 229920000139 polyethylene terephthalate Polymers 0.000 claims abstract description 15
- 239000005020 polyethylene terephthalate Substances 0.000 claims abstract description 15
- 229920008790 Amorphous Polyethylene terephthalate Polymers 0.000 claims abstract description 5
- 238000003851 corona treatment Methods 0.000 claims description 16
- 238000009941 weaving Methods 0.000 claims description 8
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- 238000004804 winding Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 7
- 150000002009 diols Chemical class 0.000 description 6
- 239000004744 fabric Substances 0.000 description 6
- 239000000835 fiber Substances 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
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- YIMQCDZDWXUDCA-UHFFFAOYSA-N [4-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1CCC(CO)CC1 YIMQCDZDWXUDCA-UHFFFAOYSA-N 0.000 description 3
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
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- DNIAPMSPPWPWGF-VKHMYHEASA-N (+)-propylene glycol Chemical compound C[C@H](O)CO DNIAPMSPPWPWGF-VKHMYHEASA-N 0.000 description 1
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- 239000012779 reinforcing material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
【解決手段】スプリットウェブ1(縦ウェブ)とスリットウェブ6(横ウェブ)とは、各々が、第1の熱可塑性樹脂からなる層(主層)の両面に第2の熱可塑性樹脂からなる接着層を付与して形成された3層構造を有する。第2の熱可塑性樹脂は、第1の熱可塑性樹脂の融点より低温でヒートシール性を有する。不織布8は、縦ウェブの配向軸と横ウェブの配向軸とが交差するように各ウェブの接着層を介して経緯積層されて形成される。ここで、第1の熱可塑性樹脂はポリエチレンテレフタレート(PET)である。また、第2の熱可塑性樹脂は非晶性ポリエチレンテレフタレート共重合体である。縦ウェブと横ウェブとを経緯積層する前には、各々の表面(接着層)に対してコロナ処理が施される。
【選択図】図12
Description
本発明は、このような実状に鑑み、良好な配向性を有すると共に、比較的高い耐熱性を有するポリエチレンテレフタレート製の網状体を提供することを目的とする。
図1及び図2は、本発明の一実施形態における網状体の第1例を構成する一軸配向体を示す。
また、第2の熱可塑性樹脂は、第1の熱可塑性樹脂の融点より低温でヒートシール性を有する非晶性ポリエチレンテレフタレート共重合体(以下、「非晶性PET共重合体」と称する)である。
非晶性PET共重合体については、そのコモノマーの割合を高くするほど結晶化が抑制されるので、ウェブ相互の接着層としての機能を向上させることができる。
すなわち、非晶性PET共重合体については、層5の接着性と割繊(スプリット処理)の作業性とを考慮して、コモノマーの割合を設定する必要があることを本発明者らは見出した。
図3に示すスリットウェブ6は、本発明の一軸配向体に対応するものであり、熱可塑性樹脂製のフィルムに横方向(スリットウェブ6の配向軸6aの軸方向)に多数のスリットを入れた後に横方向に一軸延伸させて形成される。詳しくは、スリットウェブ6は、上記多層フィルムの両耳部を除く部分に、横方向(幅方向)に、例えば熱刃などにより平行に千鳥掛け等の断続したスリットを形成した後、横方向に延伸させて形成される。また、スリットウェブ6は、横方向に比較的高い強度を有する。
図5に示す一軸配向テープ7は、本発明の一軸配向体に対応するものである。一軸配向テープ7は、第1の熱可塑性樹脂と、第1の熱可塑性樹脂の融点より低温でヒートシール性を有する第2の熱可塑性樹脂とを用い、多層Tダイ法等の成形法により作製された少なくとも2層(図では3層)からなる多層フィルムを、縦又は横方向に一軸配向させ、裁断して多層の延伸テープとしたものである。図5に示す一軸配向テープ7は、スプリットウェブ1及びスリットウェブ6と同様に、第1の熱可塑性樹脂の層(主層)4”の両面に第2の熱可塑性樹脂の層5”を付与して形成された3層構造を有する。第2の熱可塑性樹脂の層5”は、後述する不織布9(網状体の第2例)の形成時に一軸配向テープ7を経緯積層する際のテープ相互の接着層として機能する。また、第2の熱可塑性樹脂の層5”は、後述する織布10(網状体の第3例)の形成時に一軸配向テープ7を織成する際のテープ相互の接着層として機能する。なお、図中の符号7aは一軸配向テープ7の配向軸に対応する。ここで、第1の熱可塑性樹脂の層4”は、第1の熱可塑性樹脂4と同じく、PETである。また、第2の熱可塑性樹脂の層5”は、第2の熱可塑性樹脂5と同じく、非晶性PET共重合体である。
図6は、本実施形態における網状体の第1例である不織布8を示す。不織布8は、スプリットウェブ1とスリットウェブ6とを経緯積層して形成される。不織布8では、スプリットウェブ1の配向軸1aとスリットウェブ6の配向軸6aとが互いに直交するように経緯積層されている。また、不織布8では、積層されたスプリットウェブ1の接触部位同士が面接着している。
図9は、一軸配向体であるスプリットウェブ1の製造方法の概略を示す。
図9に示すように、スプリットウェブ1は、主として、(1)多層フィルムの配向工程、(2)配向多層フィルムを配向軸と平行にスプリットするスプリット工程、及び、(3)スプリットしたフィルムを巻き取る巻取工程等を経て製造される。
図10は、本実施形態における網状体の製造方法の第1例として、スプリットウェブ1を2枚積層した不織布の製造方法を示す。
図11は、コロナ処理に用いられるコロナ処理装置を示す。
そして、横ウェブを縦ウェブの幅に等しい長さに切断し、縦ウェブの走行フィルムに対し直角の方向から供給して、積層工程112において接着層(第2の熱可塑性樹脂の層5)を介して各ウェブの配向軸が互いに直交するように経緯積層させる。経緯積層した縦ウェブ及び横ウェブを、熱圧着工程113において、外周面が鏡面である熱シリンダ113aと鏡面ロール113b,113cとの間に順次導いてニップ圧を加える。これにより、縦ウェブと横ウェブとが互いに熱圧着されて一体化される。また、縦ウェブと横ウェブとの接触部位同士が全面的に面接着する。このようにして一体化された縦ウェブ及び横ウェブは巻取工程にて巻き取られて、経緯積層不織布の巻取体114になる。
不織布8の製造方法は、主として、(1)多層フィルムの長手方向に対して直角にスリット処理を行うスリット工程、(2)多層スリットフィルムの配向工程、及び、(3)横ウェブ(スリットウェブ6)に縦ウェブ(スプリットウェブ1)を積層させて熱圧着する圧着工程を含む。
図13に示す部分拡大図は、図2に示した部分拡大図に対応するものであり、図1及び図2に示したスプリットウェブ1の変形例を示す。
図13に示すスプリットウェブ1’は第1の熱可塑性樹脂(PET)の層(主層)4の一方の面に第2の熱可塑性樹脂(非晶性PET共重合体)の層5を付与して形成された2層構造を有する。第2の熱可塑性樹脂の層5は、不織布8(網状体の第1例)の形成時にスリットウェブ6又は後述するスリットウェブ6’と共に経緯積層される際のウェブ相互の接着層として機能する。
この変形例(スリットウェブ6’)とスリットウェブ6との相違点について説明する。
この変形例(一軸配向テープ7’)と一軸配向テープ7との相違点について説明する。
図15に示す一軸配向テープ7’は第1の熱可塑性樹脂(PET)の層(主層)4”の一方の面に第2の熱可塑性樹脂(非晶性PET共重合体)の層5”を付与して形成された2層構造を有する。第2の熱可塑性樹脂の層5”は、不織布9(網状体の第2例)の形成時に一軸配向テープ7’を経緯積層する際のテープ相互の接着層として機能する。また、第2の熱可塑性樹脂の層5”は、織布10(網状体の第3例)の形成時に一軸配向テープ7’を織成する際のテープ相互の接着層として機能する。
1a 配向軸
2 幹繊維
3 枝繊維
4,4’,4” 第1の熱可塑性樹脂の層
5,5’,5” 第2の熱可塑性樹脂の層
6,6’ スリットウェブ
6a 配向軸
7,7’ 一軸配向テープ
7a 配向軸
8 不織布
9 不織布
10 織布
14 多層フィルム
15 オーブン
16 スプリッター
17 熱処理部
18 巻取体
110 スプリットウェブ(縦ウェブ)
110a 原反繰出しロール
111 拡幅工程
112 積層工程
113 熱圧着工程
113a 熱シリンダ
113b,113c 鏡面ロール
114 巻取体
210 スプリットウェブ(横ウェブ)
210a 原反繰出しロール
211 拡幅工程
314 多層フィルム
315 横スリット工程
316 横配向工程
317 熱圧着工程
317a 熱シリンダ
317b,317c 鏡面ロール
318 巻取体
410 スプリットウェブ(縦ウェブ)
410a 原反繰出しロール
411 拡幅工程
500 コロナ処理装置
501 高周波電源
502 コントローラ
503 電極
504 処理ロール
Claims (3)
- 第1の熱可塑性樹脂からなる主層の少なくとも一方の面に、前記第1の熱可塑性樹脂の融点よりも低温でヒートシール性を有する第2の熱可塑性樹脂からなる接着層を付与して形成した一軸配向体を、配向軸が交差するように前記接着層を介して経緯積層し又は織成してなる網状体であって、
前記第1の熱可塑性樹脂はポリエチレンテレフタレートであり、
前記第2の熱可塑性樹脂は非晶性ポリエチレンテレフタレート共重合体であることを特徴とする網状体。 - 前記一軸配向体は、前記主層の両面に前記接着層を付与して形成されたことを特徴とする請求項1記載の網状体。
- 前記経緯積層又は織成に先立って、前記接着層にコロナ処理を施したことを特徴とする請求項1又は請求項2に記載の網状体。
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JP2011221990A JP5946622B2 (ja) | 2011-10-06 | 2011-10-06 | 網状体の製造方法 |
CN201280049306.5A CN103857525B (zh) | 2011-10-06 | 2012-06-26 | 网状体 |
EP12838738.8A EP2762310A4 (en) | 2011-10-06 | 2012-06-26 | BODY OF MAILLAGE |
PCT/JP2012/066274 WO2013051312A1 (ja) | 2011-10-06 | 2012-06-26 | 網状体 |
US14/349,858 US20150004860A1 (en) | 2011-10-06 | 2012-06-26 | Mesh body |
MX2014004106A MX2014004106A (es) | 2011-10-06 | 2012-06-26 | Cuerpo de malla. |
EA201490742A EA201490742A1 (ru) | 2011-10-06 | 2012-06-26 | Сетчатый элемент |
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JP6845005B2 (ja) * | 2016-12-27 | 2021-03-17 | Eneos株式会社 | 粘着テープ |
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JPH08267638A (ja) * | 1995-03-31 | 1996-10-15 | Toppan Printing Co Ltd | 印刷層を設けたバリア性の優れた包装材料 |
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WO2013051312A1 (ja) | 2013-04-11 |
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