JPS62253409A - 二軸延伸された合成樹脂製壜成形用中間素材 - Google Patents

二軸延伸された合成樹脂製壜成形用中間素材

Info

Publication number
JPS62253409A
JPS62253409A JP61302689A JP30268986A JPS62253409A JP S62253409 A JPS62253409 A JP S62253409A JP 61302689 A JP61302689 A JP 61302689A JP 30268986 A JP30268986 A JP 30268986A JP S62253409 A JPS62253409 A JP S62253409A
Authority
JP
Japan
Prior art keywords
bottle
forming part
thickness
intermediate material
shell
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.)
Granted
Application number
JP61302689A
Other languages
English (en)
Other versions
JPH0327369B2 (ja
Inventor
Yataro Yoshino
吉野　弥太郎
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.)
Yoshino Kogyosho Co Ltd
Original Assignee
Yoshino Kogyosho Co Ltd
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 Yoshino Kogyosho Co Ltd filed Critical Yoshino Kogyosho Co Ltd
Priority to JP61302689A priority Critical patent/JPS62253409A/ja
Publication of JPS62253409A publication Critical patent/JPS62253409A/ja
Publication of JPH0327369B2 publication Critical patent/JPH0327369B2/ja
Granted 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
    • B29C2949/072—Preforms or parisons characterised by their configuration having variable wall thickness
    • B29C2949/0724—Preforms or parisons characterised by their configuration having variable wall thickness 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
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/072—Preforms or parisons characterised by their configuration having variable wall thickness
    • B29C2949/0725—Preforms or parisons characterised by their configuration having variable wall thickness 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
    • B29C2949/07—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
    • B29C2949/073—Preforms or parisons characterised by their configuration having variable diameter
    • B29C2949/0733—Preforms or parisons characterised by their configuration having variable diameter 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
    • B29C2949/07—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
    • B29C2949/20—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)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 「産業上の利用分野」 本発明は、例えば炭酸ガス含有飲料水、或いは炭酸ガス
を含有しない清涼飲料水などを充填するに通した合成樹
脂製二軸延伸壜成形用の中間素材に関する。
「従来の技術」 上記飲料水等を充填する壜として従来ガラス壜が使用さ
れていたが、ｆｆｆｌがかさみ、コスト高となるため近
時合成樹脂製二軸延伸壜が使用されている。該壜の形成
は、有底かつ上端開口の管状をなす合成樹脂製中間素材
を設けておき、加熱状態でその中間素材上端部をＩ屋持
させて金型内に垂下させ、中間素材内に入れた押下げ棒
により中間素材の底部を押下げてまず縦軸方向への延伸
を行った後、その中間素材内へ高圧エアを吹込み横軸方
向への延伸を行って二輪延伸壜としていた。
上記中間素材は、壜の口頚部形成用の上端部だけは二軸
延伸することなく、そのまま増目頚部とすることが可能
な肉厚とし、その他の中間素材部分は二軸延伸して肉薄
の壜を成形することが可能に、上記上端部よりも厚肉か
つ均等肉厚とするものであった。
「発明が解決しようとする問題点」 上記中間素材を上記のように二輪延伸すると、槽底壁お
よび壜肩部の二軸延伸が不充分となり、強度が低下する
欠点があった。
本発明は上記槽底壁および壜ｎ部も壜胴部とほぼ同様に
延伸できるよう設けたものである。
「問題点を解決するための手段」 有底かつ上端開口の管状をなす、二軸延伸壜成形用の中
間素材であって、該中間素材のほぼ均等肉厚とした壜胴
部形成部分肉厚に対して、槽底部形成部分と槽周部形成
部分との各肉厚を、約８０％程度ないしは８０％以下の
肉厚とした。
「作用」 第１図が示すように、はぼ均等肉厚の壜胴皿形成部分２
に対して槽底部形成部分７および槽周部形成部分６の肉
厚を薄くした本発明中間素材ｌを加熱し、吹込み成形用
金型９内にセットさせておき、その場口頚部形成部分３
を型締めにより保持させた状態でその内部に押下げ棒を
入れ、底部を押下げして第２図のように縦軸方向へ延伸
させる。
該状態での延伸は、主として肉薄部分において行われる
こととなるため、第２図が示すように主として槽周一部
形成部分６と、槽底部形成部分７との部分が延伸され更
に肉薄化することとなる。該状態から押下げ棒ｌＯに設
けられた吹込み路１１を介して高圧エアを吹込み乍ら更
にキャビティ底面１２まで押下げすると、始めに肉薄化
された槽周部形成部分６と槽底部形成部分７とがキャビ
ティ内壁面１３に圧接され、続いて二軸延伸により胴部
がキャビティ内壁面へ圧接されて壜８が形成されること
となる。
「実施例」 ｌは本発明に係る二軸延伸された合成４Ｍ脂製壜成形用
の有底かつ上端開口で管状をなす中間素材で島る０合成
樹脂材としては、飽和ポリエステル樹脂がよいが、その
他ポリプロピレン、塩ビ等も二輪延伸させるに適する。
該中間素材は射出成形により形成できる。その形状は円
筒状にするとよい、上端部は増目頚部形成部分３とされ
ており、その外周にはキャップ螺合用のねし４が周設さ
せである。５はキャップ周壁の下端部係合用の外向きフ
ランジである。該外向きフランジよりも上方が１０１１
部形成部分であり、核部はそのまま槽目頚部にすること
が可能に設けておく。
増目ｙｎ部形成部分と壜胴皿形成部分との間の槽周部形
成部分６と、槽底部形成部分７とのそれぞれの肉Ｐ１は
、壜胴皿形成部分２の約８０％程度、ないしはそれ以下
の肉厚に形成させておく。
肩部形成部分６および槽底部形成部分７の胴部２に対す
る肉厚比は、壜の形状および所望される延伸倍率によっ
て異るが、要するに肩部形成部分と底部形成部分との二
輪延伸が不充分となり易いため、二輪延伸を、縦軸方向
へ延伸して延伸が不充分となり易い部分を伸ばした後、
横軸方向へ延伸させようとするものであるから、該目的
に適するよう、その肉厚比を定めればよい、尚その肉厚
比があまりに少い場合は縦軸方向への延伸の際に胴部が
共に延伸されて充分な効果をあげることが出来ない。
「発明の効果」 本発明は既述構成としたから、既述のように二輪延伸す
ることでほぼ均等に延伸された二輪延伸壜を成形するこ
とが掻めで容易である。又中間素材の構造は極めて簡易
であるから廉価に製作することが出来、従来に比べてコ
スト高となることもない。
【図面の簡単な説明】
第１図は本発明に係る中間素材の縦断面図、第２図は該
中間素材を金型内に入れて軸方向に延伸させた状態での
縦断面図、第３図は上記中間素材によって形成された壜
の縦断面図である。 ｌ・・・中間素材　　　　２・・・壜胴皿形成部分６・
・・壜ｈ１部形成部分　７・・・槽底部形成部分特許出
願人　株式会社　吉野工業所 代　　理　　人　　　弁理士　　今　　岡　　良　　夫
図面の浄書（内容に変更なし） 手ｖ５補正書（斌） 昭和６２年、５月１ｑ日 号゛ ！１寺３′「庁長官　　殿 ３、補正をする者 事件との関係　特許出願人 住所　東京都江東区大島３の２の６ 名　称　（６９０）　　株式会社　吉野工業所代表者吉
野弥太部 ４、代　理　人

Claims (1)

    【特許請求の範囲】
  1. 有底かつ上端開口の管状をなす、二軸延伸壜成形用の中
    間素材であって、該中間素材のほぼ均等肉厚とした壜胴
    部形成部分肉厚に対して、壜底部形成部分と壜肩部形成
    部分との各肉厚を、約８０％程度ないしは８０％以下の
    肉厚としたことを特徴とする合成樹脂製二軸延伸壜成形
    用中間素材
JP61302689A 1986-12-17 1986-12-17 二軸延伸された合成樹脂製壜成形用中間素材 Granted JPS62253409A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61302689A JPS62253409A (ja) 1986-12-17 1986-12-17 二軸延伸された合成樹脂製壜成形用中間素材

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61302689A JPS62253409A (ja) 1986-12-17 1986-12-17 二軸延伸された合成樹脂製壜成形用中間素材

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP15434578A Division JPS5579239A (en) 1978-12-13 1978-12-13 Innprocess material for making bottole of twooaxissextended synthetic resin and method of using said material

Publications (2)

Publication Number Publication Date
JPS62253409A true JPS62253409A (ja) 1987-11-05
JPH0327369B2 JPH0327369B2 (ja) 1991-04-15

Family

ID=17912006

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61302689A Granted JPS62253409A (ja) 1986-12-17 1986-12-17 二軸延伸された合成樹脂製壜成形用中間素材

Country Status (1)

Country Link
JP (1) JPS62253409A (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0572412U (ja) * 1992-03-04 1993-10-05 凸版印刷株式会社 二軸延伸ブロー成形容器用一次成形品
WO1995011791A3 (en) * 1993-10-27 1995-09-14 Bekum Maschf Gmbh Method of forming molecularly oriented containers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0572412U (ja) * 1992-03-04 1993-10-05 凸版印刷株式会社 二軸延伸ブロー成形容器用一次成形品
WO1995011791A3 (en) * 1993-10-27 1995-09-14 Bekum Maschf Gmbh Method of forming molecularly oriented containers

Also Published As

Publication number Publication date
JPH0327369B2 (ja) 1991-04-15

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