JP5631183B2 - プリフォーム - Google Patents
プリフォーム Download PDFInfo
- Publication number
- JP5631183B2 JP5631183B2 JP2010270311A JP2010270311A JP5631183B2 JP 5631183 B2 JP5631183 B2 JP 5631183B2 JP 2010270311 A JP2010270311 A JP 2010270311A JP 2010270311 A JP2010270311 A JP 2010270311A JP 5631183 B2 JP5631183 B2 JP 5631183B2
- Authority
- JP
- Japan
- Prior art keywords
- preform
- lightening
- peripheral surface
- outer peripheral
- circumferential ring
- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B11/00—Making preforms
- B29B11/14—Making preforms characterised by structure or composition
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/071—Preforms or parisons characterised by their configuration, e.g. geometry, dimensions or physical properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/072—Preforms or parisons characterised by their configuration having variable wall thickness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/073—Preforms or parisons characterised by their configuration having variable diameter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/076—Preforms or parisons characterised by their configuration characterised by the shape
- B29C2949/0768—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform
- B29C2949/0769—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the lip, i.e. very top of preform neck
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/076—Preforms or parisons characterised by their configuration characterised by the shape
- B29C2949/0768—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform
- B29C2949/077—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the neck
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/076—Preforms or parisons characterised by their configuration characterised by the shape
- B29C2949/0768—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform
- B29C2949/077—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the neck
- B29C2949/0772—Closure retaining means
- B29C2949/0773—Threads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/076—Preforms or parisons characterised by their configuration characterised by the shape
- B29C2949/0768—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform
- B29C2949/077—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the neck
- B29C2949/0777—Tamper-evident band retaining ring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/076—Preforms or parisons characterised by their configuration characterised by the shape
- B29C2949/0768—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform
- B29C2949/0779—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the body
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/22—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at neck portion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/24—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at flange portion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/26—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at body portion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/28—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at bottom portion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/30—Preforms or parisons made of several components
- B29C2949/3024—Preforms or parisons made of several components characterised by the number of components or by the manufacturing technique
Description
以下では、まず、プラスチックボトルについて簡単に説明し、その後、プラスチックボトルへと成形されるプリフォームについて詳細に説明する。また、以下の説明では、プリフォームにおいて、口部が存在する方を上側とし、プリフォーム本体部が存在する方を下側とする。高さとは、プリフォームの中心軸の方向(上下方向)に沿った長さを意味する。横断面形状とは、中心軸に直交する平面(横断面)における断面形状を意味する。
先ず、金型を使用して、金型内にポリエチレンテレフタレートを射出し、プリフォーム10を射出成形する。射出成形後、金型を開いて、プリフォーム10を取り出し、ブロー成形機にセットする。ブロー成形機にて、プリフォーム10のうち、プリフォーム本体部14のみを加熱し、延伸ロッドによってプリフォーム本体部14を縦方向に延伸させると共に、圧縮空気を吹き込んでプリフォーム本体部14を横方向に延伸させる。これにより、肩部3、胴部4及び底部5が成形される。一方、口部12はそのままの大きさ・形状を保ったまま口部2となり、プラスチックボトル1の一連の成形が完了する。
プリフォーム本体部14の部位のうち、従来延伸されずに厚肉のまま残っていたサポートリング30の下部に肉抜き部50を部分的に形成しているので、プリフォーム10に使用する樹脂量(ポリエチレンテレフタレートの量)を削減することができる。また、サポートリング30の下部の全体の厚みを薄くする場合に比べて、強度低下を抑制することができる。特に、肉抜き部50を均等間隔で形成しているため、サポートリング30の下部の強度が周方向においてバランスが良くなり、強度面に配慮した樹脂量の削減となる。
プリフォーム10を射出成形する際、肉抜き部50を均等間隔で形成するため、射出された樹脂がバランス良く流動する。また、肉抜き部50を円弧形状の横断面形状に形成するので、樹脂の流動性も確保し易い。さらに、このような態様の肉抜き部50であるので、射出成形後においては、射出成形に用いた金型から製品(プリフォーム10)が抜き易くなり、成形不良が起こり難い。したがって、プリフォーム10の成形性を良好に維持することができ、プラスチックボトル1の生産性を向上することができる。
肉抜き部50とサポートリング30との間に凹凸のない外周面56が形成されているので、この外周面56及びサポートリング30を利用して、プリフォーム10及びプラスチックボトル1を安定してハンドリングすることができる。これにより、プリフォーム10及びプラスチックボトル1を取り扱う際のハンドリング性を適切に確保することができる。
上記したプリフォーム10の構造は、本発明の範囲を逸脱しない限り適宜設計変更することができる。例えば、肉抜き部50の個数は8個に限るものではなく、2以上の複数であればよい。また、肉抜き部50をネック部44の外周面ではなく、ネック部44の内周面に形成することも可能である。ただし、金型の型抜きのし易さの観点からすれば、外周面に形成した方が好ましい。
Claims (6)
- 口部と当該口部から延在する有底筒状のプリフォーム本体部とから構成され、二軸延伸ブロー成形によって前記口部が延伸されることなく前記プリフォーム本体部が延伸されてプラスチックボトルへと成形されるプリフォームにおいて、
前記プリフォーム本体部は、前記口部との境界部分であって且つ二軸延伸ブロー成形によって延伸される部分に、当該プリフォームの周方向に均等間隔で形成された複数の肉抜き部を有している、プリフォーム。 - 前記口部は、前記プリフォーム本体部との境界を画定する部分に、前記プリフォーム本体部よりも大径の周状リング部を有し、
前記プリフォーム本体部は、前記周状リング部の下端に連続する凹凸のない筒状の外周面を有していると共に、この凹凸のない筒状の外周面の下端に連続した外周面に前記肉抜き部を形成している、請求項1に記載のプリフォーム。 - 前記肉抜き部の高さは、前記凹凸のない筒状の外周面の高さよりも大きい、請求項2に記載のプリフォーム。
- 前記肉抜き部は、前記周状リング部に近い部位ほど肉抜き量が大きく、前記周状リング部から遠ざかるにつれて肉抜き量が徐々に減って最終的に消滅する、請求項2又は3に記載のプリフォーム。
- 前記口部は、前記周状リング部の上側に第2の周状リング部を、また、当該第2の周状リングの上側にねじ山を有し、且つ、前記周状リング部と前記第2の周状リング部との間の外周面には、前記プリフォーム本体部における複数の肉抜き部と同じ均等間隔で複数の肉抜き部が形成されている、請求項2ないし4のいずれか一項に記載のプリフォーム。
- 前記肉抜き部の横断面形状は、円弧形状である、請求項1ないし4のいずれか一項に記載のプリフォーム。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010270311A JP5631183B2 (ja) | 2010-12-03 | 2010-12-03 | プリフォーム |
PCT/JP2011/076828 WO2012073744A1 (ja) | 2010-12-03 | 2011-11-21 | プリフォーム |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010270311A JP5631183B2 (ja) | 2010-12-03 | 2010-12-03 | プリフォーム |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2012116160A JP2012116160A (ja) | 2012-06-21 |
JP5631183B2 true JP5631183B2 (ja) | 2014-11-26 |
Family
ID=46171687
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010270311A Active JP5631183B2 (ja) | 2010-12-03 | 2010-12-03 | プリフォーム |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP5631183B2 (ja) |
WO (1) | WO2012073744A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019246346A1 (en) * | 2018-06-22 | 2019-12-26 | Amcor Rigid Plastics Usa, Llc | Container preform |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014014144A1 (de) * | 2014-09-22 | 2016-03-24 | Mahir Aktas | Verfahren und Vorrichtung zur Herstellung einer optimierten Halskontur an Preformen |
JP6665034B2 (ja) * | 2016-05-25 | 2020-03-13 | サントリーホールディングス株式会社 | 樹脂製ボトル、及び、プリフォーム |
JP2018079574A (ja) * | 2016-11-14 | 2018-05-24 | 東洋製罐株式会社 | 合成樹脂製耐熱容器の二軸延伸ブロー成形用プリフォーム |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5843308B2 (ja) * | 1976-02-09 | 1983-09-26 | 株式会社吉野工業所 | 二軸延伸した容器 |
JPH01182022A (ja) * | 1988-01-18 | 1989-07-19 | Yoshida Kogyo Kk <Ykk> | ポリエステル樹脂製白濁模様入り容器の製造方法 |
JPH0624756B2 (ja) * | 1989-07-07 | 1994-04-06 | 日精エー・エス・ビー機械株式会社 | 延伸吹込成形におけるパリソン延伸方法 |
JPH0761674B2 (ja) * | 1990-08-06 | 1995-07-05 | 凸版印刷株式会社 | プラスチックボトルの製造方法 |
JP4169337B2 (ja) * | 2003-04-30 | 2008-10-22 | 株式会社青木固研究所 | プリフォーム及び薄肉容器 |
JP4292918B2 (ja) * | 2003-08-22 | 2009-07-08 | 東洋製罐株式会社 | プラスチックボトル容器用プリフォーム |
JP5329170B2 (ja) * | 2008-10-15 | 2013-10-30 | ザ コカ・コーラ カンパニー | プラスチックボトル及びプリフォーム |
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2010
- 2010-12-03 JP JP2010270311A patent/JP5631183B2/ja active Active
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2011
- 2011-11-21 WO PCT/JP2011/076828 patent/WO2012073744A1/ja active Application Filing
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019246346A1 (en) * | 2018-06-22 | 2019-12-26 | Amcor Rigid Plastics Usa, Llc | Container preform |
US11807412B2 (en) | 2018-06-22 | 2023-11-07 | Amcor Rigid Packaging Usa, Llc | Container preform |
Also Published As
Publication number | Publication date |
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JP2012116160A (ja) | 2012-06-21 |
WO2012073744A1 (ja) | 2012-06-07 |
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