JP7342178B2 - マイクロセルフォームシートおよび作製プロセスおよび使用 - Google Patents
マイクロセルフォームシートおよび作製プロセスおよび使用 Download PDFInfo
- Publication number
- JP7342178B2 JP7342178B2 JP2022046204A JP2022046204A JP7342178B2 JP 7342178 B2 JP7342178 B2 JP 7342178B2 JP 2022046204 A JP2022046204 A JP 2022046204A JP 2022046204 A JP2022046204 A JP 2022046204A JP 7342178 B2 JP7342178 B2 JP 7342178B2
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- foam
- foamed
- foam sheet
- microcellular foam
- 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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Images
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Description
図1および図2を参照すると、本開示の一態様による多層シート20は、フォーム第1層またはコア層22と、任意に少なくとも1つの第2層または外側シート層24とを含む。多層シート20は、図1に示すように、「AB」構造でフォームコア層22の一方の側に隣接する単一の外側シート層24を含むことができる。任意に、図2に示すように、多層シート20は、「ABA」構造で、対向する第1および第2の外層24および26の間に配置されたフォームコア層22を含むことができる。任意に、フォームコア層22の片側または両側に複数の外層を設けることができる。本開示の一態様によれば、複数のフォーム層22および複数の外側層24および/または26を、任意の所望の層パターンに従って組み合わせて、所望の多層シートを提供することができる。
ここで図3を参照すると、本開示の一態様によるマイクロセルフォーム層を含む多層シートを形成するための固相発泡プロセス100を示す。固相発泡プロセス100は、多層シート20との関連で記載されているが、本明細書に記載のプロセスは、本明細書に明示的に記載されていない他の単一または多層シートを形成するために使用してもよく、異なる論理的順序で進めてもよく、または追加的または介在する工程を含んでもよい。例えば、固相発泡プロセス100を使用して、単層フォームシートまたは多層フォームシートを、任意に非発泡シート層と組み合わせて形成することができる。
本開示の別の態様によれば、マイクロセルフォーム層を形成するために使用する押出ブレンドは、予備発泡処理段階102において発泡剤の代わりに、または発泡剤と組み合わせて成核剤を含むことができる。押出ブレンドは、含浸および発泡段階104の含浸段階136中に非反応ガスの吸収を促進する、および/またはセル核形を促進することができる成核剤を含むことができ、したがって非処理サンプルと比較してより短い時間で所望の密度を有するマイクロセルフォームを提供することができる。
本開示の別の態様によれば、マイクロセルフォームシートは、図3の予備発泡処理段階102と、図3の予備発泡核形成処理段階300による成核剤の使用とを組み合わせたプロセスを用いて、形成することができる。成核剤は、図4の予備泡処理段階102の122で、発泡剤に加えて、第1の押出ブレンドに添加して、成核剤および発泡剤の両方を含む第1の押出ブレンドを形成することができる。図3の固相発泡プロセス100の含浸および発泡段階104は、予備発泡処理段階102を、予備発泡核形成処理段階300なしで単独で使用するプロセスを実施する方法に関して上述したのと同様の方法で、成核剤および発泡剤の両方を含む押出ブレンドを用いて実施することができる。成核剤は、図16の予備発泡核形成処理段階300に関して上述したのと同様の方法で、122で第1の押出ブレンドに添加する。
図25および図26は、本開示の固相発泡プロセス100の予備発泡処理段階102(「予備発泡処理」)に従って調製したマイクロセルPETシートおよび予備発泡処理段階102を含まない(「非処理」)マイクロセルPETシートを用いて作製したカップの断熱性能を比較する。予備発泡処理カップと非処理カップの両方を形成するために使用したシートは、予備発泡処理段階102を伴う場合と伴わない場合でそれぞれ、同じ固相発泡プロセスに従って発泡させた。予備発泡処理カップと非処理カップの両方を、同じ熱成形プロセスを用いてカップに成形した。予備発泡処理カップおよび非処理カップは、単一発泡層シートから成形した。
図28A~Cおよび図29A~Cは、本開示の予備発泡処理段階なしで作製した固相フォームと比較して、予備発泡処理段階102を含む図3の固相発泡プロセス100に従って製造したフォーム材料のセル構造を示す。図28A~Cは、本開示の予備発泡処理段階102を含まない固相発泡プロセスに従って作製されたフォームカップ(「未処理カップ」)の側壁断面の走査型電子顕微鏡(SEM)画像を示す。図29A~Cは、予備発泡処理段階102を含む、本開示の固相発泡プロセス100に従って作製したフォームカップ(「予備発泡処理カップ」)のカップ側壁断面のSEM画像を示す。図28A~Bおよび図29A~Cの設定は、2kV、WD12mm、SS30であり、図28Cは、WD13mmであった。
Claims (20)
- 容器の形成に使用するための固相発泡マイクロセルフォームシートであって、
前記マイクロセルフォームシート内のフォーム層を画定し、かつ第1のセル集団よりも小さいセルサイズを有する第2のセル集団が中に散在している第1のセル集団を有する中央発泡部分であって、前記第2のセル集団は、前記中央発泡部分内の前記第1のセル集団を画定する前記材料中に形成されている、中央発泡部分と、
1つもしくは複数の別個の発泡部分、スキン層を画定する1つもしくは複数の別個の非発泡部分、または前記中央発泡部分の片側もしくは両側の1つもしくは複数の別個の発泡部分と1つもしくは複数の別個の非発泡部分との組み合わせと
を含む、固相発泡マイクロセルフォームシート。 - ポリエチレンテレフタレート(PET)、ポリエーテルエーテルケトン(PEEK)、ポリエチレンナフタレート(PEN)、ポリブチレンテレフタレート(PBT)、ポリメチルメタクリレート(PMMA)、ポリ乳酸(PLA)、ポリヒドロキシ酸(PHA)、ポリプロピレン(PP)、ポリエチレン(PE)または熱可塑性ウレタン(TPU)を含むポリマー材料から作製される、請求項1に記載の固相発泡マイクロセルフォームシート。
- 前記マイクロセルフォームシートが多層シートの第1の層を形成している、請求項1に記載の固相発泡マイクロセルフォームシート。
- 前記第1の層が、追加の層と共押出、ラミネート、または押出コーティングされている、請求項3に記載の固相発泡マイクロセルフォームシート。
- 前記第1のセル集団が100マイクロメートルを超える平均直径を含む、請求項1に記載の固相発泡マイクロセルフォームシート。
- 前記第2のセル集団が10マイクロメートル未満の平均直径を含む、請求項5に記載の固相発泡マイクロセルフォームシート。
- 前記マイクロセルフォームシートが1g/cm3未満の密度を有する、請求項1に記載の固相発泡マイクロセルフォームシート。
- 前記マイクロセルフォームシートが少なくとも1つの成核剤を含むポリマー材料から作製される、請求項1に記載の固相発泡マイクロセルフォームシート。
- 前記少なくとも1つの成核剤が無機成核剤からなる、請求項8に記載の固相発泡マイクロセルフォームシート。
- 前記少なくとも1つの成核剤が有機成核剤からなる、請求項8に記載の固相発泡マイクロセルフォームシート。
- 前記少なくとも1つの成核剤が、無機成核剤、および有機成核剤の組み合わせから選択される、請求項8に記載の固相発泡マイクロセルフォームシート。
- 前記少なくとも一つの成核剤が、タルクおよびポリテトラフルオロエチレンからなる群から選択される、請求項8に記載の固相発泡マイクロセルフォームシート。
- 前記少なくとも1つの成核剤が、約0.5~5重量%の量で存在する、請求項8に記載の固相発泡マイクロセルフォームシート。
- 前記中央発泡部分の両側にある一対の非発泡部分を含む、請求項1に記載の固相発泡マイクロセルフォームシート。
- 前記中央発泡部分と前記一対の非発泡部分のそれぞれとの間にある少なくとも1対の別個の発泡部分を含む、請求項14に記載の固相発泡マイクロセルフォームシート。
- 前記マイクロセルフォームシートが、発泡剤からなるポリマー材料から作られる、請求項1に記載の固相発泡マイクロセルフォームシート。
- 前記発泡剤が、約0.1~5重量%の範囲の量で存在する、請求項16に記載の固相発泡マイクロセルフォームシート。
- 前記発泡剤が、物理発泡剤を含む、請求項16に記載の固相発泡マイクロセルフォームシート。
- 前記発泡剤が、化学発泡剤を含む、請求項16に記載の固相発泡マイクロセルフォームシート。
- 前記化学発泡剤が、
重炭酸ナトリウムとクエン酸との組み合わせ、
クエン酸ナトリウムと炭酸カルシウムとの組み合わせ、または
ジステアリン酸カルシウムと石灰石と酸化カルシウムとの組み合わせ
を含む、請求項19に記載の固相発泡マイクロセルフォームシート。
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US20200361127A1 (en) | 2020-11-19 |
CA3020607C (en) | 2023-02-21 |
MX2018012478A (es) | 2019-07-22 |
US11179871B2 (en) | 2021-11-23 |
CA3020607A1 (en) | 2019-04-13 |
JP2022087129A (ja) | 2022-06-09 |
US11890792B2 (en) | 2024-02-06 |
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