JP2010527821A - 射出ブロー成形のための改良ホットランナシステム - Google Patents
射出ブロー成形のための改良ホットランナシステム Download PDFInfo
- Publication number
- JP2010527821A JP2010527821A JP2010509841A JP2010509841A JP2010527821A JP 2010527821 A JP2010527821 A JP 2010527821A JP 2010509841 A JP2010509841 A JP 2010509841A JP 2010509841 A JP2010509841 A JP 2010509841A JP 2010527821 A JP2010527821 A JP 2010527821A
- Authority
- JP
- Japan
- Prior art keywords
- preform
- container
- hot runner
- regular
- blow molding
- 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.)
- Granted
Links
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
- B29K2105/0032—Pigments, colouring agents or opacifiyng agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
- B29K2105/0044—Stabilisers, e.g. against oxydation, light or heat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
- B29K2105/0047—Agents changing thermal characteristics
- B29K2105/005—Heat sensitisers or absorbers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/16—Fillers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2667/00—Use of polyesters or derivatives thereof for preformed parts, e.g. for inserts
- B29K2667/04—Polyesters derived from hydroxycarboxylic acids
- B29K2667/043—PGA, i.e. polyglycolic acid or polyglycolide
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- 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
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7158—Bottles
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Abstract
【選択図】図1
Description
“結晶性ポリマー”は、融点以下の平衡状態に冷却されるときに非晶質および結晶領域の両方を示すポリマーを意味する。
“結晶化度”は、結晶状態に固まった結晶性ポリマーの体積分率を意味する。この体積分率は、Pが試験材料の密度、Pa純粋な非晶質材料の密度(例えば、PET:1.333g/cm3)、Pcが純粋な結晶材料の密度(例えば、PET:1.455g/cm3)として、P−Pa/PcPaにより計算される。
“前駆層状構造(Pre-stratified structure)”は、プリフォームの断面の異なる位置間における、分子のプリアライメント/配向(molecular pre-alignment/orientation)および/または結晶化度の変化の規則的または不規則な配列を意味する。“層状構造(Stratified structure)”は、容器の断面の異なる位置間における分子のプリアライメント/配向および結晶化度の変化の規則的または不規則な配列を意味する。
すなわち、本体部は、射出成形プロセス中に非晶質状態へと焼入れがなされ、加熱および延伸ブロー成形され、その結果、要望通り事実上、結晶性となった。
ネックフィニッシュは、射出成形プロセス中に非晶質状態へと焼入れがなされ、低温状態で放置され、延伸ブロー成形プロセス前および当該プロセス中に延伸が制限され、よって、事実上非晶質で、結晶化度の増加が全くないままとされた。
i)フローチャネルの直径を変える、
ii)溶融フローにベンチュリ制限を導入し、その後に、フローのその後の拡大を生成する設定長さのチャネルを続ける、
iii)前記制限または拡大の傾斜を使用する。
a.市販等級の結晶性ポリマー、PETが、M&G社のCobiter 80のように、0.78−0.82のクラスIV(classical IV)の範囲内で取り入れられる。
b.以下の一般的な機械設定で操作されたHuskeyタイプのような標準的な射出成形機により、1aで言及したポリマー材料が加工される。
・押出機バレル :270−290℃
・ノズル :270−290℃
・マニホールド :275−295℃
・ゲート :280−300℃
・金型冷却水 :10−15℃
・サイクル時間 :10−60秒
c.M&G社のCleartuf Maxのように、0.82−0.86の増加したクラスIVの範囲内で、市販等級の結晶性ポリマー、PETによりポジション1bが繰り返される。
d.M&G社のCleartuf 8006のように、0.78−0.82の増加したクラスIVの範囲内で、市販等級の結晶性共重合体、PET系によりポジション1bが繰り返される。
a.射出されたプリフォームの製造用に通常の標準的なホットランナ構成で、ポジション1a−1dが実行される。
b.図2乃至9に示すような、特定のホットランナの改良品を組み込んで、ポジション1a−1dが繰り返される。
a.選択ボリュームサイズの射出延伸ブロー成形ボトルに適した工業利用可能なプリフォームを使用して、1および2で述べたポジションが実行される。
b.ポジション3aが繰り返される。しかし、その際に、射出延伸ブロー成形ボトルに適した工業利用可能なプリフォームであって、選択ボリュームサイズについて減少した軸延伸比を有するプリフォームが使用される。
c.ネックおよび/または本体領域について、8−60℃の範囲の適合したプリフォーム成形温度で、ポジション3aが繰り返される。
d.ネックおよび/または本体領域について、8−60℃の範囲の適合したプリフォーム成形温度で、ポジション3bが繰り返される。
a.ポジション3a−3dにより得られたプリフォームが、90−95℃のプリフォーム再加熱温度範囲下で操作されるSidelのような従来のブロー成形機上で再加熱される。
b.ポジション3a−3dにより得られたプリフォームが、100−110℃のプリフォーム再加熱温度範囲下で操作されるSidelのような従来のブロー成形機上で再加熱される。
c.ポジション3a−3dにより得られたプリフォームが、120−130℃のプリフォーム再加熱温度範囲下で操作されるSidelのような従来のブロー成形機上で再加熱される。
a.ポジション4a−4cにより得られたプリフォームが、23℃の成形温度で操作される選択サイズの射出延伸ブロー成形ボトルに適した従来のブロー成形金型内でブローされる。
b.ポジション4a−4cにより得られたプリフォームが、80℃の成形温度で操作される選択サイズの射出延伸ブロー成形ボトルに適した従来のブロー成形金型内でブローされる。
c.ポジション4a−4cにより得られたプリフォームが、160℃の成形温度で操作される選択サイズの射出延伸ブロー成形ボトルに適した従来の熱設定ブロー成形金型内でブローされる。
Claims (23)
- 容器を作るための射出ブロー成形方法であって、
ホットランナシステムを介してプリフォーム金型内に溶融した結晶性ポリマーを射出するステップと、
ブローイングによりプリフォームを二軸延伸して容器を形成するステップとを備え、
前記プリフォームが、その断面の異なる位置の間に、分子のプリアライメント/配向の変化の規則的または不規則な配列を有することを特徴とする方法。 - 容器を作るための射出ブロー成形方法であって、
ホットランナシステムを介してプリフォーム金型内に溶融した結晶性ポリマーを射出するステップと、
ブローイングによりプリフォームを二軸延伸して容器を形成するステップとを備え、
前記プリフォームが、その断面の異なる位置の間に、分子のプリアライメント/配向の変化の規則的または不規則な配列と、結晶化度の変化の規則的または不規則な配列とを有することを特徴とする方法。 - 容器を作るための射出ブロー成形方法であって、
ホットランナシステムを介してプリフォーム金型内に溶融した結晶性ポリマーを射出するステップと、
ブローイングによりプリフォームを二軸延伸して容器を形成するステップとを備え、
さらに、前記ホットランナシステム内で前記溶融した結晶性ポリマーの流路を選択的に変更するための手段を備えることを特徴とする方法。 - 容器を作るための射出ブロー成形方法であって、
ホットランナシステムを介してプリフォーム金型内に溶融した結晶性ポリマーを射出するステップと、
ブローイングによりプリフォームを二軸延伸して容器を形成するステップとを備え、
前記容器が、その断面の異なる位置の間に、分子のプリアライメント/配向の変化の規則的または不規則な配列と、結晶化度の変化の規則的または不規則な配列とを有することを特徴とする方法。 - 請求項1乃至4の何れか1項に記載の方法であって、
前記ホットランナシステムにおいて、ポリマ溶融流路が、ニードル内、バス内またはそれらの組合せにおいてプロファイリング(profiling)を備えることを特徴とする方法。 - 請求項1乃至4の何れか1項に記載の方法であって、
前記ホットランナシステムにおいて、ポリマ溶融流路が、前記ホットランナシステム内に配置インサート(placing insert)を備えることを特徴とする方法。 - 請求項2または3に記載の方法において、
射出成形キャビティが、前記プリフォームの断面の異なる位置間における前記分子のプリアライメント/配向の変化および結晶化度の変化の規則的または不規則な配列に影響を与える適当な冷却設備を有することを特徴とする方法。 - 請求項1乃至4の何れか1項に記載の方法において、
前記結晶性ポリマーがPET、高固有粘度PET(high IV PET)または変性PETまたはそれらの組合せであることを特徴とする方法。 - 請求項8に記載の方法において、
前記プリフォームの物理的特性を変更するのに適した共重合体、例えば、それに限定される訳ではないが、ポリアミド、PGA、PENまたはそれらの混合物を与えるステップをさらに備えることを特徴とする方法。 - 請求項8に記載の方法において、
抗酸化物質、紫外線吸収体、染料、顔料、核形成剤、賦形剤およびそれらの混合物のような添加物を与えるステップをさらに備えることを特徴とする方法。 - 結晶性ポリマーから作られるブロー成形に適したプリフォームであって、
分子のプリアライメント/配向の変化の規則的または不規則な配列を備えることを特徴とするプリフォーム。 - 結晶性ポリマーから作られるブロー成形に適したプリフォームであって、
当該プリフォームの断面の異なる位置の間に、分子のプリアライメント/配向の変化の規則的または不規則な配列と、結晶化度の変化の規則的または不規則な配列とを備えることを特徴とするプリフォーム。 - 請求項11または12に記載のプリフォームにおいて、
前記結晶性ポリマーがPET、高固有粘度PETまたは変性PETまたはそれらの組合せであることを特徴とするプリフォーム。 - 請求項13に記載のプリフォームにおいて、
前記容器の物理的特性を変更するのに適した共重合体、例えば、それに限定される訳ではないが、ポリアミド、PGA、PENまたはそれらの混合物を与えるステップをさらに備えることを特徴とするプリフォーム。 - 請求項13に記載のプリフォームにおいて、
抗酸化物質、紫外線吸収体、染料、顔料、核形成剤、賦形剤およびそれらの混合物のような添加物を与えるステップをさらに備えることを特徴とするプリフォーム。 - 結晶性ポリマーからブロー成形により作られる容器であって、
当該容器の断面の異なる位置の間に、分子のプリアライメント/配向の変化の規則的または不規則な配列と、結晶化度の変化の規則的または不規則な配列とを備えることを特徴とする容器。 - 請求項16に記載の容器において、
前記結晶性ポリマーがPET、高固有粘度PETまたは変性PETまたはそれらの組合せであることを特徴とする容器。 - 請求項17に記載の容器において、
当該容器の物理的特性を変更するのに適した共重合体、例えば、それに限定される訳ではないが、ポリアミド、PGA、PENまたはそれらの混合物を与えるステップをさらに備えることを特徴とする容器。 - 請求項17に記載の容器において、
抗酸化物質、紫外線吸収体、染料、顔料、核形成剤、賦形剤およびそれらの混合物のような添加物を与えるステップをさらに備えることを特徴とする容器。 - 請求項16に記載の容器において、
高温充填操作中の収縮割合が約4%未満であることを特徴とする容器。 - 請求項16または20に記載の容器において、
約1mm未満、好ましくは約0.2mmの壁厚の部分を有することを特徴とする容器。 - 請求項16または20に記載された容器の利用法であって、高温充填応用に利用されることを特徴とする利用法。
- 請求項16または20に記載された容器の利用法であって、炭酸または非炭酸飲料応用に利用されることを特徴とする利用法。
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JP2005162305A (ja) * | 2003-12-05 | 2005-06-23 | Mitsui Chemicals Inc | ポリエチレンテレフタレート製ボトル |
JP2006160336A (ja) * | 2004-12-09 | 2006-06-22 | Mitsui Chemicals Inc | ポリエステル樹脂製ボトル |
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JPH0163213U (ja) * | 1987-10-14 | 1989-04-24 | ||
JP2000516167A (ja) * | 1996-08-22 | 2000-12-05 | コンチネンタル ピー イー ティー テクノロジーズ,インコーポレイテッド | 充填および冷却段階時のプレフォームネック仕上における制御不能なポリマーの流れを防ぐ方法 |
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JP2021104678A (ja) * | 2015-07-09 | 2021-07-26 | ケイリョー パッケージング ソシエテ アノニムKeiryo Packaging SA | ポリエステルベースのポリマー物品の製造方法 |
JP7202027B2 (ja) | 2015-07-09 | 2023-01-11 | ケイリョー パッケージング ソシエテ アノニム | ポリエステルベースのポリマー物品の製造方法 |
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