JP2021028153A - プリフォーム、合成樹脂製容器、及び合成樹脂製容器の製造方法 - Google Patents
プリフォーム、合成樹脂製容器、及び合成樹脂製容器の製造方法 Download PDFInfo
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- JP2021028153A JP2021028153A JP2019148052A JP2019148052A JP2021028153A JP 2021028153 A JP2021028153 A JP 2021028153A JP 2019148052 A JP2019148052 A JP 2019148052A JP 2019148052 A JP2019148052 A JP 2019148052A JP 2021028153 A JP2021028153 A JP 2021028153A
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- JP
- Japan
- Prior art keywords
- preform
- diameter portion
- neck ring
- synthetic resin
- mouth
- 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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- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2501/00—Containers having bodies formed in one piece
- B65D2501/0009—Bottles or similar containers with necks or like restricted apertures designed for pouring contents
- B65D2501/0018—Ribs
- B65D2501/0027—Hollow longitudinal ribs
Abstract
Description
外体と該外体の内面に積層された内体とを有し、延伸ブロー成形に用いられる合成樹脂製のプリフォームであって、
筒状の口部と、
該口部の下方に位置する胴部と、
該胴部の下端部を閉塞する底部と
を備え、
前記口部における前記内体は、上端部に設けられた大径部と、該大径部の下方に接続部を介して連なる小径部とを有し、
前記口部における前記外体には、該外体を貫通する外気導入孔と、前記小径部の高さ範囲内に位置するネックリングとが設けられており、
前記内体は結晶性樹脂により形成されており、前記内体の一部に結晶化度が他の領域より大きい結晶化領域が設けられ、
該結晶化領域の上端部は、前記接続部の上端部と前記ネックリングの上端部との間の高さ範囲内に位置し、
該結晶化領域の下端部は、前記ネックリングの下方に位置することを特徴とする。
外層体と該外層体の内面に剥離可能に積層された内層体とを有し、延伸ブロー成形により形成される合成樹脂製容器であって、
筒状の口部と、
該口部の下方に位置する胴部と、
該胴部の下端部を閉塞する底部と
を備え、
前記口部における前記内層体は、上端部に設けられた大径部と、該大径部の下方に接続部を介して連なる小径部とを有し、
前記口部における前記外層体には、該外層体を貫通する外気導入孔と、前記小径部の高さ範囲内に位置するネックリングとが設けられており、
前記内層体は結晶性樹脂により形成されており、前記内層体の一部に結晶化度が他の領域より大きい結晶化領域が設けられ、
該結晶化領域の上端部は、前記接続部の上端部と前記ネックリングの上端部との間の高さ範囲内に位置し、
該結晶化領域の下端部は、前記ネックリングの下方に位置することを特徴とする。
外体と該外体の内面に積層された内体とを有するプリフォームの延伸ブロー成形による合成樹脂製容器の製造方法であって、
前記プリフォームは、筒状の口部と、該口部の下方に位置する胴部と、該胴部の下端を閉塞する底部とを備え、
前記口部における前記内体は、上端部に設けられた大径部と、該大径部の下方に接続部を介して連なる小径部とを有し、
前記口部における前記外体には、該外体を貫通する外気導入孔と、前記小径部の高さ範囲内に位置するネックリングとが設けられており、
前記外体、及び結晶性樹脂である前記内体を成形するステップと、
前記内体の一部の再加熱及び冷却により、結晶化度が他の領域より大きい結晶化領域を形成するステップと、
前記外体の内周面に、前記結晶化領域を有する前記内体を嵌合させてプリフォームを形成するステップと、
前記プリフォームを延伸ブロー成形して合成樹脂製容器を形成するステップと
を含み、
前記結晶化領域の上端部は、前記ネックリングの上端部と前記接続部の上端部との間の高さ範囲内に位置し、
前記結晶化領域の下端部は、前記ネックリングの下方に位置することを特徴とする。
2 外層体
3 内層体
4 口部
4a 雄ねじ
4b 外気導入孔
4c フランジ
4d ビード
4e 周壁
4f 大径部
4g 接続部
4h 小径部
5 胴部
7 肩部
8 ネックリング
9 結晶化領域
9a 通気リブ
10 縦リブ
10B 下端部
10M 中央高さ
10T 上端部
11 プリフォーム
12 外体
13 内体
14 口部
14a 雄ねじ
14b 外気導入孔
14c フランジ
14d ビード
14e 周壁
14e1 環状溝
14f 大径部
14f1 環状突起
14g 接続部
14h 小径部
15 胴部
16 底部
18 ネックリング
19 結晶化領域
19a 通気リブ
O1,O2 中心軸線
S 収容部
Claims (9)
- 外体と該外体の内面に積層された内体とを有し、延伸ブロー成形に用いられる合成樹脂製のプリフォームであって、
筒状の口部と、
該口部の下方に位置する胴部と、
該胴部の下端部を閉塞する底部と
を備え、
前記口部における前記内体は、上端部に設けられた大径部と、該大径部の下方に接続部を介して連なる小径部とを有し、
前記口部における前記外体には、該外体を貫通する外気導入孔と、前記小径部の高さ範囲内に位置するネックリングとが設けられており、
前記内体は結晶性樹脂により形成されており、前記内体の一部に結晶化度が他の領域より大きい結晶化領域が設けられ、
該結晶化領域の上端部は、前記接続部の上端部と前記ネックリングの上端部との間の高さ範囲内に位置し、
該結晶化領域の下端部は、前記ネックリングの下方に位置することを特徴とするプリフォーム。 - 前記結晶化領域の上端部は、前記ネックリングの上方における前記小径部の高さ範囲内に位置する、請求項1に記載のプリフォーム。
- 前記外気導入孔は、前記ネックリングの上方における前記小径部の高さ範囲内に設けられており、
前記結晶化領域の上端部は、前記外気導入孔の下端部と前記ネックリングの上端部との間の高さ位置に位置する、請求項1又は2に記載のプリフォーム。 - 前記小径部には、周方向に間欠的に設けられ径方向外側に突出する通気リブが形成されている、請求項1から3のいずれか一項に記載のプリフォーム。
- 前記大径部の外面及び前記外体の内面の一方には、環状突起が設けられ、
前記大径部の外面及び前記外体の内面の他方には、前記環状突起に対向する環状溝が設けられ、
前記環状突起と前記環状溝とが係合することで前記外体に対して前記内体が上下方向に位置決めされる、請求項1から4のいずれか一項に記載のプリフォーム。 - 前記結晶化領域は、前記延伸ブロー成形時における非延伸部である、請求項1から5のいずれか一項に記載のプリフォーム。
- 外層体と該外層体の内面に剥離可能に積層された内層体とを有し、延伸ブロー成形により形成される合成樹脂製容器であって、
筒状の口部と、
該口部の下方に位置する胴部と、
該胴部の下端部を閉塞する底部と
を備え、
前記口部における前記内層体は、上端部に設けられた大径部と、該大径部の下方に接続部を介して連なる小径部とを有し、
前記口部における前記外層体には、該外層体を貫通する外気導入孔と、前記小径部の高さ範囲内に位置するネックリングとが設けられており、
前記内層体は結晶性樹脂により形成されており、前記内層体の一部に結晶化度が他の領域より大きい結晶化領域が設けられ、
該結晶化領域の上端部は、前記接続部の上端部と前記ネックリングの上端部との間の高さ範囲内に位置し、
該結晶化領域の下端部は、前記ネックリングの下方に位置することを特徴とする合成樹脂製容器。 - 外体と該外体の内面に積層された内体とを有するプリフォームの延伸ブロー成形による合成樹脂製容器の製造方法であって、
前記プリフォームは、筒状の口部と、該口部の下方に位置する胴部と、該胴部の下端を閉塞する底部とを備え、
前記口部における前記内体は、上端部に設けられた大径部と、該大径部の下方に接続部を介して連なる小径部とを有し、
前記口部における前記外体には、該外体を貫通する外気導入孔と、前記小径部の高さ範囲内に位置するネックリングとが設けられており、
前記外体、及び結晶性樹脂である前記内体を成形するステップと、
前記内体の一部の再加熱及び冷却により、結晶化度が他の領域より大きい結晶化領域を形成するステップと、
前記外体の内周面に、前記結晶化領域を有する前記内体を嵌合させてプリフォームを形成するステップと、
前記プリフォームを延伸ブロー成形して合成樹脂製容器を形成するステップと
を含み、
前記結晶化領域の上端部は、前記ネックリングの上端部と前記接続部の上端部との間の高さ範囲内に位置し、
前記結晶化領域の下端部は、前記ネックリングの下方に位置することを特徴とする合成樹脂製容器の製造方法。 - 前記内体における前記口部の少なくとも一部の冷却は、強制冷却を伴わない徐冷である、請求項8に記載の合成樹脂製容器の製造方法。
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JP2019148052A JP2021028153A (ja) | 2019-08-09 | 2019-08-09 | プリフォーム、合成樹脂製容器、及び合成樹脂製容器の製造方法 |
CA3147199A CA3147199A1 (en) | 2019-08-09 | 2020-07-14 | Preform, synthetic resin container, and method for manufacturing synthetic resin container |
US17/634,088 US20220315268A1 (en) | 2019-08-09 | 2020-07-14 | Preform, synthetic resin container, and method for manufacturing synthetic resin container |
KR1020227004245A KR20220031683A (ko) | 2019-08-09 | 2020-07-14 | 프리폼, 합성 수지제 용기, 및 합성 수지제 용기의 제조 방법 |
EP20853295.2A EP4011596A4 (en) | 2019-08-09 | 2020-07-14 | PREFORM, CONTAINER IN SYNTHETIC RESIN AND METHOD FOR MANUFACTURING CONTAINER IN SYNTHETIC RESIN |
CN202080056204.0A CN114206735B (zh) | 2019-08-09 | 2020-07-14 | 预塑形坯、合成树脂制容器、以及合成树脂制容器的制造方法 |
PCT/JP2020/027412 WO2021029175A1 (ja) | 2019-08-09 | 2020-07-14 | プリフォーム、合成樹脂製容器、及び合成樹脂製容器の製造方法 |
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