JP2003104376A - Plastic bottle having hanger on bottom - Google Patents

Plastic bottle having hanger on bottom

Info

Publication number
JP2003104376A
JP2003104376A JP2001299959A JP2001299959A JP2003104376A JP 2003104376 A JP2003104376 A JP 2003104376A JP 2001299959 A JP2001299959 A JP 2001299959A JP 2001299959 A JP2001299959 A JP 2001299959A JP 2003104376 A JP2003104376 A JP 2003104376A
Authority
JP
Japan
Prior art keywords
hanger
preform
hanging
bottle
connecting portion
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.)
Pending
Application number
JP2001299959A
Other languages
Japanese (ja)
Inventor
Hideaki Koda
英明 甲田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aoki Technical Laboratory Inc
Original Assignee
Aoki Technical Laboratory Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Aoki Technical Laboratory Inc filed Critical Aoki Technical Laboratory Inc
Priority to JP2001299959A priority Critical patent/JP2003104376A/en
Publication of JP2003104376A publication Critical patent/JP2003104376A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B29C2949/072—Preforms or parisons characterised by their configuration having variable wall thickness
    • B29C2949/0723—Preforms or parisons characterised by their configuration having variable wall thickness 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
    • B29C2949/07—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
    • B29C2949/073—Preforms or parisons characterised by their configuration having variable diameter
    • B29C2949/0732—Preforms or parisons characterised by their configuration having variable diameter 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
    • B29C2949/07—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
    • B29C2949/078—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the bottom
    • 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
    • B29C2949/078—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the bottom
    • B29C2949/0781—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the bottom characterised by the sprue, i.e. injection mark
    • 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
    • B29C2949/079—Auxiliary parts or inserts
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To improve tensile and flexural strength of a hanger integrally formed on a bottom of a preform by thinning a coupling of the hanger by the drawing due to stretching for orientation. SOLUTION: A preform made of a crystalline resin and an annular hanger projecting from an outer bottom surface thereof are integrally formed by injection molding. A thin bottle is manufactured by blow-molding the preform. The hanger comprises an annular hanging portion and a thick coupling with such a quantity of heat that can be stretched after mold release. The coupling is drawn by stretching, thereby applying tensile and flexural strength to the hanger by orientation.

Description

【発明の詳細な説明】 【０００１】 【発明の属する技術分野】この発明は、プリフォームを
ブロー成形して製造した薄肉のボトルの底部に吊り具を
一体に有するプラスチックボトルに関するものである。 【０００２】 【発明が解決しようとする課題】輸液ボトル等の底部に
吊り具を設け、この吊り具より輸液ボトルを逆さに吊し
て点滴容器として使用できるようにしたボトルには、吊
り具を一体成形したものと後付けしたものとがある。後
付けによるものはボトルのブロー成形が容易に行え、吊
り具のデザインにも自由度がある点などで好ましいが、
吊り具の成形や取付けの工程が必要となることからコス
ト高となり、また吊り具の付け忘れや使用中の脱落など
の虞れがある。 【０００３】吊り具を一体成形したものでは、ボトルの
プリフォームを射出成形するときに、その外底面にフッ
ク状や環状の吊り具を一体に射出成形し、その吊り具を
付けたままプリフォームをボトルに延伸ブロー成形する
だけで済むので、コストの節減を図ることができ、また
吊り具の付け忘れや使用中の脱落は皆無となるなどのこ
とから、一体成形によるものが強く望まれている。 【０００４】環状の吊り掛け部と外底面に突設した連結
部とによる吊り具を、ボトル底部に一体成形によるもの
としては、プリフォームの射出成形時に吊り具も一体成
形することが知られている。この場合の課題は、吊り具
が射出成形されたままなので固くて折り曲げ難く使い勝
手が悪いということである。 【０００５】これを解決する手段として、連結部を圧縮
加工により偏平に薄肉化して可撓性を付与したり、プラ
スチックによっては連結部の一部をＶ状に圧縮して、ヒ
ンジに加工して折り曲げ易くしている。しかし連結部の
長さには制限があるので、その狭い部位に圧縮治具を当
てがって加工を施すには特別な装置と技術とが必要とな
る。 【０００６】この発明は、上記一体成形における連結部
の課題を解決するために考えられたものであって、その
目的は、連結部を引張りによる延伸により薄肉化して配
向するだけで、耐久性に優れた新たな構造の底部に吊り
具を有するプラスチックボトルを提供することにある。 【０００７】 【課題を解決するための手段】上記目的によるこの発明
は、結晶性樹脂によるプリフォームと、その外底面に突
設した環状の吊り具とを射出成形により一体成形し、そ
のプリフォームをブロー成形して製造した薄肉のボトル
であって、上記吊り具を環状の吊り掛け部と離型後に延
伸可能な熱量を有する厚肉の連結部とから構成し、その
連結部を引張りにより薄肉に延伸して、配向により吊り
具に引張及び曲げ強度を付与してなる、というものであ
る。 【０００８】上記結晶性樹脂としては、ポリエチレンテ
レフタレート（ＰＥＴ）、ポリプロピレン（ＰＰ）が好
ましく、或いはそれらの樹脂を適当な割合でブレンドし
たポリエステル樹脂であってもよい。 【０００９】またボトル成形は、射出成形したプリフォ
ームを射出コアと共にブロー金型に移行し、直ちにエア
ブローによりボトルに成形する射出ブロー成形、或いは
ブロー金型内に射出成形したプリフォームの延伸とエア
ブローとを行って、胴部が薄肉のボトルに成形する延伸
ブロー成形の何れでも行い得る。 【００１０】 【発明の実施の形態】図中１はポリプロピレン又はポリ
エチレンテレフタレートによるボトルで、射出成形され
たままの首部２を除き胴部３及び底部４を延伸ブロー成
形により薄肉に形成したものからなり、その底部４の下
側に吊り具５が一体形成してある。この吊り具５は、環
状の吊り掛け部５１と離型後に延伸可能な熱量を有する
厚肉の連結部５２を引張りにより薄肉に延伸して、配向
により吊り具５に引張及び曲げ強度を付与したものから
なる。 【００１１】上記吊り掛け部５１は面内に指先が収まる
程度の挿入穴５１ａを形成した肉厚１．５〜２．０mmほ
どのもので、その吊り掛け部５１とボトル底面４との間
に、上記連結部５２が延伸により長さ１０mm、 肉厚１．
０〜１．５mm程度に薄肉化されて一体成形された吊り具
５を構成している。 【００１２】このような吊り具５は、図２に示す射出金
型６によりプリフォーム１１と共に射出成形することが
できる。射出金型６は通常のプリフォームキャビティ７
の底部に連続して、ゲート９と接続した吊り具キャビテ
ィ８を備え、この吊り具キャビティ８の上記連結部５２
を成形する部位は、連結部５２が離型後にも延伸可能な
熱量を有する厚肉となるように球形の膨出部８ａに形成
してある。 【００１３】このような吊り具キャビティ８を備えた射
出金型６に、ゲート９にノズルタッチした射出装置のノ
ズル１０から溶融樹脂を射出充填すると、樹脂は吊り具
キャビティ８を通ってプリフォームキャビティ７に充填
され、その後に吊り具キャビティ８を満たして、球形に
膨出成形された厚肉の連結部５２を有する吊り具５がプ
リフォーム底部と一体に成形される。 【００１４】上記連結部５２の延伸は、離型後に延伸可
能な熱量を保有しているうち、図３に示すように、適当
な治具１２を吊り掛け部５１に引っ掛けて下方へ引っ張
ることで容易に行い得る。この延伸配向により連結部５
２は薄肉となって容易に折り曲げることができ、また引
張強度も著しく増加してボトル重量に吊り具５が十分に
耐えるようになる。 【００１５】連結部５２の延伸処理を完了した後のプリ
フォーム１１は、図４に示すように、ブロー金型２０の
キャビティ２１に収容されたのち、図では省略したが延
伸ロッドによる軸方向の延伸と、エアブローとによって
胴部３及び底部４が薄肉で底部に上記吊り具５を有する
ボトル１に成形される。また底型２２には吊り具５の収
容スリット２３が形成してあり、これにより吊り具５が
延伸ブロー成形の障害とならないようにしてある。 【００１６】この発明によれば吊り具５の連結部５２を
延伸配向するだけで、吊り具５に引張及び曲げ強度を付
与することができ、また連結部５２の可撓化により吊り
具５の折り曲げも容易となるので使用し易いものとな
る。延伸工程も治具を吊り掛け部５１に掛け止めて引っ
張るだけでよいので容易に行えるなどの利点を有する。Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a plastic bottle having a hanger integrated with the bottom of a thin-walled bottle manufactured by blow molding a preform. [0002] A hanging device is provided on the bottom of an infusion bottle or the like, and the infusion bottle is hung upside down from the hanging device so that the bottle can be used as a drip container. Some are integrally molded and some are retrofitted. It is preferable to use the retrofitting method because the bottle can be easily blow-molded and the design of the hanger has a certain degree of freedom.
The necessity of a step of forming and attaching the hanging tool increases the cost, and there is a risk of forgetting to attach the hanging tool or falling off during use. [0003] In the case where a hanging member is integrally molded, when a bottle preform is injection-molded, a hook-shaped or annular hanging member is integrally injection-molded on the outer bottom surface of the bottle, and the preform is attached with the hanging member. Since it is only necessary to stretch-blow mold the bottle, it is possible to save costs.In addition, since there is no forgetting to attach a hanging tool or dropping out during use, there is a strong demand for one-piece molding. I have. It has been known that, when a hanging device formed by an annular hanging portion and a connecting portion protruding from the outer bottom surface is integrally formed on the bottom of the bottle, the hanging device is also integrally formed during injection molding of a preform. I have. The problem in this case is that the hanging tool is hard to bend because it is still injection-molded and is inconvenient to use. [0005] As means for solving this problem, the connecting portion is flattened and thinned by compression to impart flexibility, or depending on the plastic, a part of the connecting portion is compressed into a V-shape and processed into a hinge. It is easy to bend. However, since the length of the connecting portion is limited, a special device and technique are required to apply a compression jig to the narrow portion to perform the processing. The present invention has been conceived in order to solve the problem of the connecting portion in the integral molding described above. The object of the present invention is to reduce the thickness of the connecting portion by stretching by pulling and to orient the connecting portion. An object of the present invention is to provide a plastic bottle having a hanger at the bottom of an excellent new structure. According to the present invention, there is provided a preform made of a crystalline resin and an annular hanging member projecting from an outer bottom surface of the preform, which are integrally formed by injection molding. A thin-walled bottle manufactured by blow molding, wherein the hanging member is constituted by an annular hanging portion and a thick-walled connecting portion having a calorific value capable of stretching after releasing from the mold, and the connecting portion is thinned by pulling. And imparts tensile and bending strength to the hanging tool by orientation. The crystalline resin is preferably polyethylene terephthalate (PET) or polypropylene (PP), or may be a polyester resin obtained by blending these resins at an appropriate ratio. In the bottle molding, the injection-molded preform is transferred to a blow mold together with an injection core, and is immediately molded into a bottle by air blow. And stretch blow molding in which the body is formed into a thin bottle. FIG. 1 shows a bottle 1 made of polypropylene or polyethylene terephthalate, which has a body 3 and a bottom 4 made thin by stretch blow molding except for a neck 2 which has been injection-molded. A hanging member 5 is integrally formed below the bottom portion 4. In this hanging device 5, the annular hanging portion 51 and the thick connecting portion 52 having a calorie that can be stretched after releasing from the mold are stretched to be thin by pulling, and the tensile and bending strength is given to the hanging device 5 by orientation. Consists of things. The hanging portion 51 has a thickness of about 1.5 to 2.0 mm with an insertion hole 51a formed so that a fingertip can be accommodated in the plane. The hanging portion 51 is located between the hanging portion 51 and the bottom surface 4 of the bottle. The connecting portion 52 has a length of 10 mm by stretching and a wall thickness of 1.
The hanging member 5 which is thinned to about 0 to 1.5 mm and integrally formed is constituted. Such a hanging tool 5 can be injection-molded together with the preform 11 using an injection mold 6 shown in FIG. The injection mold 6 is a normal preform cavity 7
The hanger cavity 8 connected to the gate 9 is provided continuously to the bottom of the hanger.
Is formed on the spherical bulging portion 8a so that the connecting portion 52 becomes thick having a calorie that can be stretched even after release from the mold. When the molten resin is injected and filled into the injection mold 6 having such a hanger cavity 8 from the nozzle 10 of the injection device in which the gate 9 is in contact with the nozzle, the resin passes through the hanger cavity 8 into the preform cavity. The hanger 5 having a thick connecting portion 52 which is filled into the hanger 7 and subsequently fills the hanger cavity 8 and is formed into a spherical shape is integrally formed with the bottom of the preform. The connecting portion 52 is stretched by holding a suitable jig 12 on the hanging portion 51 and pulling it downward as shown in FIG. Easy to do. Due to this stretching orientation, the connecting portion 5
2 is thin and can be easily bent, and the tensile strength is remarkably increased so that the hanging device 5 can sufficiently withstand the weight of the bottle. As shown in FIG. 4, the preform 11 after the completion of the stretching process of the connecting portion 52 is housed in the cavity 21 of the blow mold 20, and although not shown in the drawing, the preform 11 is moved in the axial direction by a stretching rod. By stretching and air blowing, the body 3 and the bottom 4 are formed into a thin bottle 1 having the hanging member 5 at the bottom. The bottom die 22 is provided with a slit 23 for accommodating the hanger 5 so that the hanger 5 does not hinder the stretch blow molding. According to the present invention, tension and bending strength can be imparted to the hanging member 5 only by extending and orienting the connecting portion 52 of the hanging member 5, and the connecting member 52 can be made flexible by making the connecting portion 52 flexible. Since bending is also easy, it is easy to use. The stretching step also has an advantage that it can be easily performed because the jig need only be hooked on the hanging portion 51 and pulled.

【図面の簡単な説明】 【図１】 この発明に係る底部に吊り具を有するプラス
チックボトルを一部切り欠いて示した正面図である。 【図２】 プリフォームと吊り具とを一体成形する射出
金型のキャビティ断面図である。 【図３】 吊り具の引張り延伸状態を示すプリフォーム
底部の正面図と側面図である。 【図４】 この発明に係る底部に吊り具を有するプラス
チックボトルのプリフォームの成形状態を示すブロー金
型のキャビティ断面図である。 【符号の説明】 １ ボトル ４ 底部 ５ 吊り具 ５１ 環状の吊り掛け部 ５２ 連結部 ６ プリフォームの射出金型 ７ プリフォームキャビティ ８ 吊り具キャビティ ８ａ 膨出部BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view, partially cut away, of a plastic bottle according to the present invention having a hanger at the bottom. FIG. 2 is a cross-sectional view of a cavity of an injection mold for integrally molding a preform and a hanger. 3A and 3B are a front view and a side view of a preform bottom showing a stretched state of the hanging tool. FIG. 4 is a cross-sectional view of a cavity of a blow mold showing a molded state of a preform of a plastic bottle having a hanger on the bottom according to the present invention. [Description of Signs] 1 Bottle 4 Bottom 5 Hanging tool 51 Annular hanging section 52 Connecting section 6 Preform injection mold 7 Preform cavity 8 Hanging tool cavity 8a Swelling section

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） // Ｂ２９Ｌ 22:00 Ａ６１Ｊ 1/00 ３１３Ｊ Ｆターム(参考） 3E033 AA02 BA16 BA18 BB01 DA03 DB01 DD05 DD20 DE06 FA02 FA03 GA02 3E062 AA09 AB01 AC02 GA10 GB01 GC03 GC04 4F208 AG23 AG26 AH55 AH63 LA02 LA04 LG15 LG28 LN29 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) // B29L 22:00 A61J 1/00 313J F term (Reference) 3E033 AA02 BA16 BA18 BB01 DA03 DB01 DD05 DD20 DE06 FA02 FA03 GA02 3E062 AA09 AB01 AC02 GA10 GB01 GC03 GC04 4F208 AG23 AG26 AH55 AH63 LA02 LA04 LG15 LG28 LN29

Claims (1)

【特許請求の範囲】 【請求項１】 結晶性樹脂によるプリフォームと、その
外底面に突設した環状の吊り具とを射出成形により一体
成形し、そのプリフォームをブロー成形して製造した薄
肉のボトルであって、上記吊り具を環状の吊り掛け部と
離型後に延伸可能な熱量を有する厚肉の連結部とから構
成し、その連結部を引張りにより薄肉に延伸して、配向
により吊り具に引張及び曲げ強度を付与してなることを
特徴とする底部に吊り具を有するプラスチックボトル。Claims: 1. A thin wall formed by integrally molding a preform made of a crystalline resin and an annular hanger projecting from an outer bottom surface thereof by injection molding, and then blow molding the preform. The above-mentioned bottle, wherein the hanging tool is composed of an annular hanging portion and a thick connecting portion having a calorie that can be stretched after releasing from the mold, and the connecting portion is stretched to be thin by pulling and suspended by orientation. A plastic bottle having a hanger at the bottom, wherein the plastic bottle is provided with tensile and bending strength.
JP2001299959A 2001-09-28 2001-09-28 Plastic bottle having hanger on bottom Pending JP2003104376A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001299959A JP2003104376A (en) 2001-09-28 2001-09-28 Plastic bottle having hanger on bottom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001299959A JP2003104376A (en) 2001-09-28 2001-09-28 Plastic bottle having hanger on bottom

Publications (1)

Publication Number Publication Date
JP2003104376A true JP2003104376A (en) 2003-04-09

Family

ID=19120617

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001299959A Pending JP2003104376A (en) 2001-09-28 2001-09-28 Plastic bottle having hanger on bottom

Country Status (1)

Country Link
JP (1) JP2003104376A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012161150A1 (en) * 2011-05-24 2012-11-29 味の素株式会社 Preform, synthetic-resin container with hanging attachment, and method for forming container with hanging attachment
CN102951330A (en) * 2012-11-26 2013-03-06 中山环亚塑料包装有限公司 Reversed hanging type package bottle
CN105593002A (en) * 2013-09-24 2016-05-18 费森尤斯卡比德国有限公司 Method and apparatus for producing a filled sbm bottle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012161150A1 (en) * 2011-05-24 2012-11-29 味の素株式会社 Preform, synthetic-resin container with hanging attachment, and method for forming container with hanging attachment
JPWO2012161150A1 (en) * 2011-05-24 2014-07-31 エイワイファーマ株式会社 Preform, synthetic resin-made container with hanging tool, and method for forming container with hanging tool
EP2716430A4 (en) * 2011-05-24 2015-05-13 Nihon Yamamura Glass Co Ltd Preform, synthetic-resin container with hanging attachment, and method for forming container with hanging attachment
CN102951330A (en) * 2012-11-26 2013-03-06 中山环亚塑料包装有限公司 Reversed hanging type package bottle
CN105593002A (en) * 2013-09-24 2016-05-18 费森尤斯卡比德国有限公司 Method and apparatus for producing a filled sbm bottle
CN105593002B (en) * 2013-09-24 2018-11-16 费森尤斯卡比德国有限公司 Method and apparatus for manufacturing the stretch blow bottle being poured

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