JP4601491B2 - Blow molded container made of synthetic resin - Google Patents

Blow molded container made of synthetic resin Download PDF

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JP4601491B2
JP4601491B2 JP2005152361A JP2005152361A JP4601491B2 JP 4601491 B2 JP4601491 B2 JP 4601491B2 JP 2005152361 A JP2005152361 A JP 2005152361A JP 2005152361 A JP2005152361 A JP 2005152361A JP 4601491 B2 JP4601491 B2 JP 4601491B2
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container
lip
synthetic resin
annular
thickness
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JP2006327616A (en
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淳一 糸川
高雄 飯塚
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Yoshino Kogyosho Co Ltd
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Yoshino Kogyosho Co Ltd
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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
    • B29C2949/20—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
    • 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
    • B29C2949/3032—Preforms or parisons made of several components having components being injected

Description

本発明は、ポリエチレンテレフタレート等の合成樹脂（熱可塑性樹脂）をブローあるいは射出成形することによって製造される容器に関するものであり、とくに容器の成形過程で起こりがちな口部における肉ひけを回避して成品品質の安定化を図ろうとするものである。   The present invention relates to a container manufactured by blowing or injection molding a synthetic resin (thermoplastic resin) such as polyethylene terephthalate, and in particular, avoids sink marks in the mouth that tend to occur during the molding process of the container. It is intended to stabilize product quality.

ペットボトルなどの合成樹脂製の容器は、効率的な生産が可能であるうえ、取り扱いも比較的容易であることから、近年、酒や飲料、調味材等を入れる容器として多用されており、そのサイズも多岐にわたっている。   Synthetic resin containers such as plastic bottles can be efficiently produced and are relatively easy to handle, so in recent years they have been widely used as containers for alcohol, beverages, seasonings, etc. There are various sizes.

かかる容器は射出成形や押し出し成形によって予め形成された一次成形品としてのプリフォームを、二軸延伸ブロー成形により所望の外観形状を呈するように仕上げることによって製造される（例えば特許文献１参照）が、とくに、清酒を入れる一升瓶のような大型の容器にあっては、成形の際に、口部における肉ひけが避けられないことから、一升瓶で通常使用されている栓体（圧入栓とこの圧入栓を口部とともに取り巻くバージンタイプの金属製のバージンラベル）を適用し難い不具合があり、その解決が望まれていた。
特開平6−127542号公報 Such a container is manufactured by finishing a preform as a primary molded product previously formed by injection molding or extrusion molding so as to exhibit a desired external shape by biaxial stretch blow molding (see, for example, Patent Document 1). Especially, in the case of large containers such as sake bottles that contain sake, it is inevitable that the meat sinks in the mouth during molding. There is a problem that it is difficult to apply a virgin type metal virgin label that surrounds the stopper together with the mouth part, and the solution has been desired.
JP-A-6-127542

本発明の課題は、とくに一升瓶のような大型の容器を成型する場合において生じていた口部における肉ひけを回避し得る新規な容器を提案するところにある。   The subject of this invention exists in the place which proposes the novel container which can avoid the meat sink in the opening | mouth part which had arisen in the case of shape | molding especially large sized containers, such as a bottle.

本発明は、ネックリングを介して容器の本体部分に一体的につながり、栓体を着脱自在に嵌合させるリップを注出端として内容物を注出する口部を備えた合成樹脂製容器であって、
前記リップとネックリングの相互間に、筒体を介してつながり少なくとも２つの山を形成する環状体を設け、
該環状体、及び該リップ部は、容器の軸心に沿う（容器の軸心に沿うとは、該軸心に平行であると同義）同一の直線上に存在する外縁を有するものであり、
前記環状体に、容器の軸心に沿う向きの中央部に環状溝からなる肉抜き部を設けた、ことを特徴とする合成樹脂製容器である。 The present invention is a synthetic resin container that is integrally connected to a main body portion of a container via a neck ring, and has a mouth portion for pouring contents with a lip for detachably fitting a plug body as a pouring end. There,
An annular body is formed between the lip and the neck ring, which is connected via a cylinder to form at least two peaks.
Annular body, and said lip, (A along the vessel axis, synonymous with the parallel to the axis center) along the axis of the container is intended to have the outer edge present in the same straight line ,
A synthetic resin container characterized in that the annular body is provided with a lightening portion made of an annular groove at a central portion in a direction along the axis of the container .

上記の構成になるブロー成形容器においては、前記リップの肉厚をｔとし、前記筒体の肉厚をｔIn the blow molded container having the above configuration, the thickness of the lip is t, and the thickness of the cylinder is t. 11 とした場合に、前記筒体の肉厚ｔThe thickness t of the cylinder 11 が前記リップの肉厚ｔの３０〜７０％とするのが好ましい。Is preferably 30 to 70% of the wall thickness t of the lip.

環状体の間にリップ部に比べて薄肉の筒体を設けることでブロー成形の際の肉ひけが回避され、寸法精度が高まる。また、金属製のバージンラベルを、環状体を利用して固定保持できるので、栓体を容器の口部に確実に係止することができる。   By providing a thin cylindrical body between the annular bodies as compared with the lip portion, the sink mark during blow molding is avoided, and the dimensional accuracy is increased. In addition, since the metal virgin label can be fixed and held using an annular body, the stopper can be reliably locked to the mouth of the container.

以下、図面を用いて本発明をより具体手的に説明する。
図１は本発明に従う合成樹脂製容器の実施の形態を一升瓶に類似の形状として示したものであって、図における１は複数の環状溝を有する容器の本体部分（胴体）、２はネックリング、３はネックリング２を介して容器の本体部分１につながる口部である。この口部３は栓体４を着脱自在に嵌合させるリップ3aを有しており、このリップ3aを注出端として容器内の内容物を注出するものであって、本体部分１、ネックリング２及び口部３はブローあるいは射出成形によって一体的に成形される。 Hereinafter, the present invention will be described in more detail with reference to the drawings.
FIG. 1 shows an embodiment of a synthetic resin container according to the present invention having a shape similar to that of a single bottle. In FIG. 1, 1 is a main body (body) of a container having a plurality of annular grooves, and 2 is a neck ring. Reference numeral 3 denotes an opening connected to the main body portion 1 of the container via the neck ring 2. The mouth 3 has a lip 3a for detachably fitting the plug body 4. The lip 3a is used as a dispensing end to pour out the contents in the container. The ring 2 and the mouth 3 are integrally formed by blow or injection molding.

また、5a、5bはリップ3aとネックリング２との相互間で口部３の周り沿って配置された環状体、そして６は環状体5a、5bを相互につなぐ薄肉の筒体である。   Reference numerals 5a and 5b denote annular bodies arranged around the mouth 3 between the lip 3a and the neck ring 2, and 6 denotes a thin-walled cylinder that connects the annular bodies 5a and 5b to each other.

上記環状体5a、5bはリップ３の縁部3aに接する直線Ｌ（容器の軸心Ｙに沿って平行に伸びる直線）と同一の直線上に存在する外縁5a１、5b１を有しており、この環状体5a、5bが引きちぎり可能な金属製のバージンラベルの固着ベースとして機能する。 The annular bodies 5a and 5b have outer edges 5a 1 and 5b 1 existing on the same straight line as a straight line L (a straight line extending parallel to the container axis Y) contacting the edge 3a of the lip 3. The annular bodies 5a and 5b function as a fixing base for a metal virgin label that can be torn off.

上記の構成になる容器は、環状体5a、5bの間に薄肉の筒体６を設けるようにしたため、成形過程で成品劣化の原因となる肉ひけを起こすことがないばかりか、環状体5a、5bを使用して従来適用されている栓体、バージンラベルをそのまま適用することが可能となる。   Since the container having the above-described structure is provided with the thin cylindrical body 6 between the annular bodies 5a and 5b, not only does not cause a sink mark causing deterioration of the product during the molding process, but also the annular body 5a, It is possible to apply the plug body and the virgin label which are conventionally applied using 5b as they are.

図２は口部３のリップ3aに栓体４を圧入、嵌合させて該栓体４から環状体5a、5bにわたってバージンラベル７を装着した状態を示したものであり、図３は栓体４として環状凹部4aを有するものを適用して栓体４の環状凹部4ａをリップ3aに適合させるとともに、該栓体４から環状体5aにおいてバージンラベル７を装着した状態を示したものであって、何れのものにおいても容器は栓体４によって確実に封印される。   FIG. 2 shows a state in which the plug body 4 is press-fitted and fitted into the lip 3a of the mouth portion 3, and the virgin label 7 is mounted from the plug body 4 to the annular bodies 5a and 5b. 4 shows a state in which the annular recess 4a of the plug body 4 is adapted to the lip 3a by applying the one having the annular recess 4a, and the virgin label 7 is mounted on the annular body 5a from the plug body 4. In any case, the container is securely sealed by the stopper 4.

環状体5a、5bは容器の軸心Ｙに沿う向きの中央部（厚さ方向の中央部）に肉抜き部としての環状溝ｍを設けた例（図１の拡大部参照）で図示したが、かかる溝ｍは必要に応じて適宜設けられるものであって、この点についてはとくに限定されない。   The annular bodies 5a and 5b are illustrated in an example (see the enlarged portion in FIG. 1) in which an annular groove m as a lightening portion is provided in the center portion (center portion in the thickness direction) along the axis Y of the container. Such a groove m is appropriately provided as necessary, and this point is not particularly limited.

バージンラベル７は図示はしないが、摘み部と破断予定線が設けられていて、摘み部を引っ張り該破断予定線に沿ってラベルを引き千切ることで栓体４の取り外しを可能とする。   Although not shown, the virgin label 7 is provided with a knob and a planned break line. The stopper 4 can be removed by pulling the knob and tearing the label along the planned break line.

一升瓶のような大型の容器において従来不可避であった口部における肉ひけを回避できる合成樹脂製形容器が提供できる。   It is possible to provide a synthetic resin shaped container capable of avoiding meat sink in the mouth, which has been conventionally unavoidable in a large container such as a bottle.

本発明に従う容器の実施の形態を示した図である。It is the figure which showed embodiment of the container according to this invention. 本発明に従う容器の他の実施の形態を要部について示した図である。It is the figure which showed other embodiment of the container according to this invention about the principal part. 本発明に従う容器のさらに他の実施の形態を要部について示した図である。It is the figure which showed further another embodiment of the container according to this invention about the principal part.

符号の説明Explanation of symbols

１ 容器の本体部分
２ ネックリング
３ 口部
3a リップ
４ 栓体
4a 環状凹部
5a、5b 環状体
６ 筒体
７ バージンラベル 1 Body part 2 Neck ring 3 Mouth
3a Lip 4 Plug
4a Annular recess
5a, 5b Ring body 6 Tube body 7 Virgin label

Claims (2)

ネックリングを介して容器の本体部分に一体的につながり、栓体を着脱自在に嵌合させるリップを注出端として内容物を注出する口部を備えた合成樹脂製容器であって、
前記リップとネックリングの相互間に、筒体を介してつながり口部の周りに沿って配置された少なくとも２つの環状体を設け、
該環状体、及び該リップ部は、容器の軸心に沿う同一直線上に存在する外縁を有するものであり、
前記環状体の容器の軸心に沿う向きの中央部に環状溝からなる肉抜き部を設けてバージンラベルを固着する固着ベースとしての外縁を形成したことを特徴とする合成樹脂製容器。 A synthetic resin container that is integrally connected to the main body portion of the container via a neck ring, and has a mouth portion for pouring contents with a lip that allows the plug body to be detachably fitted,
Between the lip and the neck ring, there is provided at least two annular bodies arranged along the periphery of the connecting portion via a cylinder,
Annular body, and said lip is adapted to have the outer edge that is present on the same straight line along the axis of the container,
A synthetic resin container characterized in that an outer edge serving as a fixing base for fixing a virgin label is formed by providing a lightening part comprising an annular groove at a central part of the annular body along the axis of the container. 前記リップの肉厚をｔとし、前記筒体の肉厚をｔ1とした場合に、前記筒体の肉厚ｔ 1 が前記リップの肉厚ｔの３０〜７０％である、請求項１記載の合成樹脂製容器。 The thickness t 1 of the cylinder is 30 to 70% of the thickness t of the lip, where t is the thickness of the lip and t 1 is the thickness of the cylinder. Synthetic resin container.
JP2005152361A 2005-05-25 2005-05-25 Blow molded container made of synthetic resin Active JP4601491B2 (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL389393A1 (en) * 2009-10-28 2011-05-09 Maks Spółka Z Ograniczoną Odpowiedzialnością Premould and method for producing bottles
JP5737616B2 (en) * 2011-03-30 2015-06-17 大日本印刷株式会社 Preforms and containers
JP6351492B2 (en) * 2014-11-28 2018-07-04 株式会社吉野工業所 Synthetic resin bottle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60146057U (en) * 1984-03-07 1985-09-27 株式会社吉野工業所 Mouth structure of synthetic resin bottle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60146057U (en) * 1984-03-07 1985-09-27 株式会社吉野工業所 Mouth structure of synthetic resin bottle

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