JP7414718B2 - エラストマ物品を製造する方法 - Google Patents
エラストマ物品を製造する方法 Download PDFInfo
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- JP7414718B2 JP7414718B2 JP2020532637A JP2020532637A JP7414718B2 JP 7414718 B2 JP7414718 B2 JP 7414718B2 JP 2020532637 A JP2020532637 A JP 2020532637A JP 2020532637 A JP2020532637 A JP 2020532637A JP 7414718 B2 JP7414718 B2 JP 7414718B2
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- film layer
- peak density
- inert
- piston
- elastomeric
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Description
以下の実施例1~4では、PTFEによるラミネートが施され(つまり、ピストンの本体を被覆し、もって、ピストン外側の側壁面および頂部面を形成するラミネートPTFEフィルム層)、ETFEリリースフィルム層を用いて図1に関して上で述べられたプロセスにより作製された4つのエラストマピストンを採用する。比較を目的として、PTFEバリア層を夫々有する、リリースフィルム層が用いられない点を除いて同じプロセスによる4つのエラストマピストン(以下「比較例1~4」という)を作製した。実施例1~4の(図5Aおよび5Cに示される)ピストン頂部および周囲のシーリング面、より具体的には、(図5Bおよび5Dに示される)第1シーリングリブは、表面に明らかな表面形状、傷跡または条痕のない、極めて滑らかなラミネートされたフィルム面を有する。これに対し、比較例1~4夫々の(図6Aおよび6Cに示される)ピストン頂部および周囲のシーリング面、より具体的には、(図6Bおよび6Dに示される)第1シーリングリブのラミネートフィルム面は、任意の深さおよび長さの破断された円、斜線および条痕、任意の寸法および深さの穴、平坦な領域、破断された浅い溝等の形態の顕著な特徴を表面に有する。
ラミネートPTFEバリア層を有する5mLのエラストマピストンを、図1に関して上で述べられたプロセスにより、2mil(~50μm)の厚さを有するETFEから形成されるリリースフィルム層を用いて作製した(分析は、表面全体に亘る変化を示すため、ピストンの第1リブ(つまり、医薬接触面に最も近いリブ)の異なる領域について実行し、よって、表1において、発明サンプルAおよびBとして参照する)。比較を目的として、ラミネートフィルム層またはリリースフィルム層が採用されなかったが、発明サンプルAおよびBを作製する際に使用されたのと同じプロセスパラメータを用いてむき出しのエラストマピストンを作製し(表1において、比較サンプル1として参照する)、リリースフィルム層が採用されなかった点を除き、発明サンプルAおよびBを作製する際に使用されたのと同じプロセスパラメータにより、ラミネートPTFEバリアフィルムが設けられたエラストマピストンを作製し(表1において、比較サンプル2として参照する)、さらに、成形前のPTFEフィルムを提供した(表1において、比較サンプル3として参照する)。
発明サンプルAおよびB、さらに、比較サンプル1から3に加え、外側の側壁面および頂部面全体にラミネートされたPTFEバリアフィルムを備える、多くの1mL長のエラストマピストンを、図1に関して上に述べられたプロセスにより、ETFEから形成された2mil(~50μm)の厚さを有するリリースフィルム層を用いて作製し(多様な試験をこの形式のピストンを用いて実施し、図14、15、17および18に発明サンプルCとして示す)(発明サンプルC)、外側の側壁面および頂部面全体にラミネートされたETFEバリアフィルムを備える、多くの1mL長のエラストマピストンを、発明サンプルCを作製するのに用いられたのと同じプロセスパラメータにより作製した(図16に発明サンプルDとして示す)(発明サンプルD)。比較を目的として、多くの1mL長のエラストマピストンを、発明サンプルCを作製するのに用いられたのと同じプロセスパラメータを用いるが(つまり、ラミネートPTFEバリアフィルムを有する)、リリースフィルム層を採用せずに作製し(図14に比較サンプル4として示される)(比較サンプル4)、さらに、多くの1mL長のエラストマピストンを、発明サンプルDを作製するのに用いられたのと同じプロセスパラメータを用いるが(つまり、ラミネートETFEフィルムを有する)、リリースフィルム層を採用せずに作製した(図16に比較サンプル5として示す)(比較サンプル5)。
Claims (18)
- エラストマ物品を製造する方法であって、
未硬化のエラストマシート、前記エラストマシートを完全に覆う、初期ピーク密度によって特徴付けられる初期表面粗さを有する不活性フィルム、および前記不活性フィルムを覆う剥離フィルム、のアセンブリを、前記剥離フィルムが前記不活性フィルムおよび型の開放凹部の内表面とそれぞれ接触しかつそれらの間に配置されるように、型に入れることと、
前記アセンブリが前記開放凹部に押し込まれ、前記エラストマシートが硬化され、前記不活性フィルムが前記エラストマシートに積層されて積層部品が形成されるように、前記型において前記アセンブリを圧縮成型することと、
前記不活性シートから前記剥離フィルムを除去することと
を含み、
前記アセンブリを圧縮成型する際に、前記不活性フィルムと前記剥離フィルムとの間の局所的な接触領域が、前記アセンブリが前記開放凹部に押し込まれるときに引き伸ばされて前記不活性フィルムの表面粗さが、前記初期ピーク密度よりも大きい第2ピーク密度によって特徴づけられる第2表面粗さまで増加する
方法。 - 前記第2ピーク密度が、前記初期ピーク密度に対して少なくとも3%だけ増大する、
請求項1に記載の方法。 - 前記第2ピーク密度が、前記初期ピーク密度に対して少なくとも25%だけ増大する、
請求項1に記載の方法。 - 前記第2ピーク密度が、前記初期ピーク密度に対して3%から165%だけ増大する、
請求項1に記載の方法。 - 前記第2ピーク密度が、前記初期ピーク密度に対して25%から35%だけ増大する、
請求項1に記載の方法。 - 前記第2ピーク密度は、2.0ミクロンのガウスフィルタが適用された場合の50000ピーク/mm2よりも大きく、または0.08ミクロンのガウスフィルタが適用された場合の300000ピーク/mm2よりも大きい
請求項1に記載の方法。 - 前記第2ピーク密度は、2.0ミクロンのガウスフィルタが適用された場合の100000ピーク/mm2よりも大きく、または0.08ミクロンのガウスフィルタが適用された場合の500000ピーク/mm2よりも大きい
請求項1に記載の方法。 - 前記第2ピーク密度は、2.0ミクロンのガウスフィルタが適用された場合の150000ピーク/mm2よりも大きく、または0.08ミクロンのガウスフィルタが適用された場合の600000ピーク/mm2よりも大きい
請求項1に記載の方法。 - 前記第2ピーク密度は、2.0ミクロンのガウスフィルタが適用された場合の200000ピーク/mm2よりも大きく、または0.08ミクロンのガウスフィルタが適用された場合の700000ピーク/mm2よりも大きい
請求項1に記載の方法。 - 前記エラストマ物品は、ピストンである、
請求項1に記載の方法。 - 前記エラストマ物品は、バイアルストッパである、
請求項1に記載の方法。 - 前記不活性フィルムの外表面は、鏡面状仕上げがなされている、
請求項1に記載の方法。 - 前記不活性フィルム層の外表面は、実質的に条痕を有しない
請求項1に記載の方法。 - 前記不活性フィルム層は、フルオロポリマからなる、
請求項1に記載の方法。 - 前記エラストマ物品は、シリコーンを含まないエラストマーストッパーまたはピストンとして利用されるように構成される
請求項1に記載の方法。 - 前記型が、複数の突出部を画定する上部型半体と、下部型半体とを備え、
前記開放凹部が、前記下部型半体に画定され、それぞれの前記突出部を有する複数の前記開放凹部のうちの1つであり、
前記複数の開放凹部のそれぞれは、前記上部型半体の複数の前記突起のうちの1つに対応する
請求項1に記載の方法。 - 前記型による前記アセンブリの前記圧縮成型は、熱および圧力を加えた状態で前記エラストマシートを加硫し、前記エラストマシートを前記不活性フィルムに取り外し不可能に結合させる
請求項1に記載の方法。 - 前記型による前記アセンブリの前記圧縮成型は、120℃から310℃の温度および40から350kg/cm2の圧力で、数秒から30分の持続時間に亘って実行される
請求項1に記載の方法。
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| NL2027599B1 (en) * | 2021-02-19 | 2022-09-19 | Instructure Labs B V | Biocompatible polymeric implant material having a textured surface |
| JP7243755B2 (ja) * | 2021-03-29 | 2023-03-22 | 大日本印刷株式会社 | 艶消物品 |
| JP2025105086A (ja) * | 2023-12-28 | 2025-07-10 | 住友ゴム工業株式会社 | シリンジ用ガスケット |
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2018
- 2018-12-17 EP EP18836313.9A patent/EP3723958A1/en active Pending
- 2018-12-17 CN CN201880081073.4A patent/CN111867797B/zh active Active
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- 2018-12-17 CN CN202210463397.2A patent/CN114953652B/zh active Active
- 2018-12-17 US US16/771,136 patent/US11325367B2/en active Active
- 2018-12-17 WO PCT/US2018/066078 patent/WO2019118983A1/en not_active Ceased
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2022
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014156722A1 (ja) | 2013-03-29 | 2014-10-02 | 住友ベークライト株式会社 | 工程フィルム、その使用方法、成型品の製造方法および成型体 |
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| Publication number | Publication date |
|---|---|
| CN114953652A (zh) | 2022-08-30 |
| US11945204B2 (en) | 2024-04-02 |
| JP2024026610A (ja) | 2024-02-28 |
| US20220227113A1 (en) | 2022-07-21 |
| CN114953652B (zh) | 2025-08-05 |
| WO2019118983A1 (en) | 2019-06-20 |
| CN111867797A (zh) | 2020-10-30 |
| CN111867797B (zh) | 2022-05-17 |
| JP2021506623A (ja) | 2021-02-22 |
| US20210162725A1 (en) | 2021-06-03 |
| EP3723958A1 (en) | 2020-10-21 |
| US11325367B2 (en) | 2022-05-10 |
| JP7824271B2 (ja) | 2026-03-04 |
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