JP6778355B1 - 樹脂製容器の製造装置、温度調整装置、樹脂製容器の製造方法、及び温度調整方法 - Google Patents
樹脂製容器の製造装置、温度調整装置、樹脂製容器の製造方法、及び温度調整方法 Download PDFInfo
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Abstract
Description
(第1実施形態)
図1は、本発明の第1実施形態に係るブロー成形装置(射出成形部、温度調整部、ブロー成形部、取出し部を有する)の斜視図を示し、図2は、温度調整部を正面から見た断面図を示している。
・条件1: 第1の段:30℃、第2の段:20℃、第3の段:20℃
・条件2: 第1の段:50℃、第2の段:40℃、第3の段:40℃
・条件3: 第1の段:70℃、第2の段:60℃、第3の段:60℃
また、成形条件は、次の通りである。
成形サイクル時間/15.0秒、射出成形部/射出時間(充填時間):9.2秒、冷却時間:1.8秒、ブロー成形部/ブロー型のチラーの冷媒温度:15℃、ブロー成形時間:7秒、プリフォーム/材料:PET、重量:約73グラム、胴部2bの平均厚さ:約4.2mm、容器/充填容量:750ml、平均延伸倍率/横方向:3.18、縦方向:1.37
・条件1:73.07℃
・条件2:81.15℃
・条件3:91.24℃
となった。
図3は、第2の段の断面図を示し、図4は、第2の段の上面図及び底面図を示し、図5は、温度調整部を正面から見た断面図を示す。図4において、図4(a)は、第2の段22dの上面図を示し、図4(b)は、第2の段22dの底面図を示す。なお、第2実施形態では第1実施形態と異なる部分について説明し、図中の第1実施形態と略同一の構成に対しては同一の符号を用いている。
図6は、第3実施形態に係る温度調整部の半分を正面から見た断面図を示し、図7は、温度調整部の第1の段を示し、図8は、温度調整部の第2の段を示し、図9は、温度調整部の第3の段を示し、図10は、温度調整部の固定板を示す。
まず、ブロー成形装置100は、プリフォーム1を射出成形部10で高温離型する。このとき、プリフォーム1の貯留部2の胴部の円周方向の一部に鉛直方向に延びる様態、すなわち縦縞状に分布する高温部位が生じている場合がある。
図11は、温度調整部を正面から見た断面図を示す。なお、第4実施形態では第1実施形態と異なる部分について説明し、図中の第1実施形態と略同一の構成に対しては同一の符号を用いている。
図12は、温度調整部を正面から見た断面図を示し、図13は、環状プレートの上面図及び断面図を示す。図13において、図13(a)は、環状プレートの上面図を示し、図13(b)は環状プレートの断面図を示す。なお、第5実施形態では第1実施形態と異なる部分について説明し、図中の第1実施形態と略同一の構成に対しては同一の符号を用いている。
図14は、第6実施形態に係る温度調整部の半分を正面から見た断面図を示す。なお、第6実施形態では第1実施形態と異なる部分について説明し、図中の第1実施形態と略同一の構成に対しては同一の符号を用いている。
1a…容器
2…貯留部
2a…胴部
2b…底部
3…ネック部
10…射出成形部
11…射出コア型
12…射出キャビティ型
20…温度調整部(温度調整装置)
21…温調用ブローコア
21a…温調ロッド
21b…第1の接続部
21c…第2の接続部
22…温調ポット
22a…第1の段(最上段)
22b…第2の段
22c…第3の段
22d…第2の段
22e…第1の段(最上段)
22f…第1の段(最上段)
23a…流路
23b…流路
23c…流路
24a…接続部
24b…接続部
24c…接続部
24d…接続部
24e…接続部
25…中空部
26…環状溝
27…環状溝
28…環状プレート28
29…内周面
30…ブロー成形部
31…ブロー型
40…取出部
50…ネック型
50…搬送部
60…リング
70…収容面
71…第1の段
72…第2の段
73…第3の段
73…拡径面
74…固定板
74a…嵌合穴
75…ピン
76…ピン
77…ピン
78…リング部材
80…温調ポット本体
81…第1の溝部
82…第2の溝部
83…第1の領域
84…第2の領域
85…第3の領域
86…スリット
100…ブロー成形装置(樹脂製容器の製造装置)
A…空気層
O…軸心
Z…軸心
Claims (13)
- プリフォームを射出成形し、射出成形した前記プリフォームを温度調整部で温度調整し、温度調整した前記プリフォームをブロー成形する、樹脂製容器の製造装置において、
前記温度調整部は、最上段が最も高温な多段式構造を有し、前記最上段以外の下段の型面温度は前記プリフォームのガラス転移温度よりも10℃以上低いことを特徴とする、
樹脂製容器の製造装置。 - 請求項1に記載の樹脂製容器の製造装置において、前記下段の型面温度は、前記プリフォームの肉厚が1.5mm以上3.0mm以下の場合に、30℃以上80℃以下であることを特徴とする、樹脂製容器の製造装置。
- 請求項1に記載の樹脂製容器の製造装置において、前記下段の型面温度は、前記プリフォームの肉厚が3.0mm以上5.0mm以下の場合に、10℃以上60℃以下であることを特徴とする、樹脂製容器の製造装置。
- 請求項1に記載の樹脂製容器の製造装置において、前記温度調整部は、温調コア型と温調キャビティ型とで前記プリフォームを挟んで圧縮変形させることを特徴とする、樹脂製容器の製造装置。
- 請求項1に記載の樹脂製容器の製造装置において、前記温度調整部は、前記プリフォームの内側に空気を循環させることを特徴とする、樹脂製容器の製造装置。
- プリフォームを射出成形し、
射出成形した前記プリフォームを温度調整部で温度調整し、
温度調整した前記プリフォームをブロー成形する、ブロー成形方法において、
前記温度調整部は、最上段が最も高温な多段式構造を有し、前記最上段以外の下段の型面温度は前記プリフォームのガラス転移温度よりも10℃以上低いことを特徴とする、
樹脂製容器の製造方法。 - プリフォームのブロー成形に用いる温度調整方法において、
最上段が最も高温になるように多段式構造の温度調整装置を温度調整し、
前記最上段以外の下段の型面温度が前記プリフォームのガラス転移温度よりも10℃以上低い状態で前記プリフォームを温度調整することを特徴とする、
温度調整方法。 - 射出成形部でプリフォームを射出成形し、射出成形された前記プリフォームを温度調整部で温度調整し、温度調整した前記プリフォームをブロー成形部でブロー成形する、樹脂製容器の製造装置において、
前記射出成形部は、前記プリフォームの成形空間を画定する射出コア型と射出キャビティ型とネック型とを備えており、前記成形空間内で前記プリフォームを冷却する時間は、前記プリフォームに成形される樹脂材料を前記成形空間内に射出する時間の2/3以下であり、
前記温度調整部は、上下方向に配列された複数の段で構成されて前記段毎に独立して温度設定可能な多段式構造の温調ポットを備えており、前記温調ポットは、前記プリフォームの外表面に接触して前記プリフォームを上下方向に沿って異なる温度で冷却することを特徴とする、
樹脂製容器の製造装置。 - 請求項8に記載の樹脂製容器の製造装置において、前記温度調整部は、温調コア型と温調キャビティ型とで前記プリフォームを挟んで冷却させることを特徴とする、樹脂製容器の製造装置。
- 請求項8に記載の樹脂製容器の製造装置において、前記温度調整部は、前記プリフォームの内側に空気を循環させることを特徴とする、樹脂製容器の製造装置。
- 請求項10に記載の樹脂製容器の製造装置において、前記プリフォームの内側に空気を流入させる部位に近い前記段の温度設定は、空気を流出させる前記段の温度設定よりも高いことを特徴とする、樹脂製容器の製造装置。
- 請求項8に記載の樹脂製容器の製造装置において、前記温調ポットは、境目のない1つの面で形成された収容面で前記プリフォームの胴部と底部とに接しており、前記温調ポットの外側には、前記段どうしの間に溝部が形成されたことを特徴とする、樹脂製容器の製造装置。
- 射出成形部でプリフォームを射出成形し、射出成形された前記プリフォームを温度調整部で温度調整し、温度調整した前記プリフォームをブロー成形部でブロー成形する、樹脂製容器の製造方法において、
前記射出成形部は、前記プリフォームの成形空間を画定する射出コア型と射出キャビティ型とネック型とを備えており、前記成形空間内で前記プリフォームを冷却する時間は、前記プリフォームに成形される樹脂材料を前記成形空間内に射出する時間の2/3以下であり、
前記温度調整部は、上下方向に配列された複数の段で構成されて前記段毎に独立して温度設定可能な多段式構造の温調ポットを備えており、前記温調ポットは、前記プリフォームの外表面に接触して前記プリフォームを上下方向に沿って異なる温度で冷却することを特徴とする、
樹脂製容器の製造方法。
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| WO2022107851A1 (ja) * | 2020-11-18 | 2022-05-27 | 日精エー・エス・ビー機械株式会社 | 樹脂製容器の製造方法および製造装置 |
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| WO2023145775A1 (ja) | 2022-01-28 | 2023-08-03 | 日精エー・エス・ビー機械株式会社 | 温度調整用金型、樹脂製容器の製造装置 |
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| CN116901389B (zh) * | 2023-05-29 | 2025-12-23 | 浙江恒熙高新材料科技有限公司 | 抗静电防护透气膜的制备设备及控制方法 |
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