JPH0549016B2 - - Google Patents

Info

Publication number
JPH0549016B2
JPH0549016B2 JP23000087A JP23000087A JPH0549016B2 JP H0549016 B2 JPH0549016 B2 JP H0549016B2 JP 23000087 A JP23000087 A JP 23000087A JP 23000087 A JP23000087 A JP 23000087A JP H0549016 B2 JPH0549016 B2 JP H0549016B2
Authority
JP
Japan
Prior art keywords
mold
cup
foot
main body
preform
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.)
Expired - Lifetime
Application number
JP23000087A
Other languages
English (en)
Other versions
JPS6472825A (en
Inventor
Eiko Tanaka
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP23000087A priority Critical patent/JPS6472825A/ja
Publication of JPS6472825A publication Critical patent/JPS6472825A/ja
Publication of JPH0549016B2 publication Critical patent/JPH0549016B2/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
    • B29C2949/0722—Preforms or parisons characterised by their configuration having variable wall thickness 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
    • B29C2949/07—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
    • B29C2949/0731—Preforms or parisons characterised by their configuration having variable diameter 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
    • B29C2949/07—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
    • B29C2949/0761—Preforms or parisons characterised by their configuration characterised by the shape characterised by overall the shape
    • 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
    • B29C2949/078—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
    • B29C2949/079—Auxiliary parts or inserts
    • B29C2949/0793—Transport means
    • 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
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7132—Bowls, Cups, Glasses

Landscapes

  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Description

【発明の詳細な説明】 （産業上の利用分野） この発明は本体がカツプ状で足部を有する
PETなどの合成樹脂製容器の射出延伸吹込成形
方法に関するものである。
（従来の技術） 一般に合成樹脂製容器を射出延伸吹込成形する
には、有底のプリフオームを射出成形し、そのプ
リフオームを吹込金型内にて軸方向に延伸すると
ともに、空気圧によりキヤビテイ一杯に膨張させ
て所望の形状に成形している。
（発明が解決しようとする問題点） 上記成形法では、延伸吹込成形時にプリフオー
ムが縦にも伸びることから、縦寸法に変化がない
射出吹込成形のように、予め把手や足部などをプ
リフオーム本体に成形して置くことができず、こ
のため延伸吹込成形で把手あるいはスタンドなど
の足を有するカツプを成形するには、更に改良が
必要とされている。
そこでこの発明者は、延伸吹込成形時における
プリフオーム本体の伸びに伴つて、予め一体成形
された足部をも移動さえすれば、射出延伸吹込成
形でも足付カツプを成形することができることを
見出したのである。
したがつてこの発明の目的は、吹込金型を改良
して足部に支障なくプリフオーム本体の延伸吹込
成形を可能となし、これにより射出延伸吹込成形
でも足付カツプを容易に成形できるようにしたこ
とにある。
（問題点を解決するための手段） 上記目的によるこの発明は、本体底部に足部を
一体に有するプリフオームを射出成形し、そのプ
リフオームをカツプ成形キヤビテイと足部収容部
とを備えた吹込金型に移し、本体をカツプ成形キ
ヤビテイに、かつ足部をカツプ成形キヤビテイか
ら足部収容部にわたり可動自在に位置させたのち
型締し、上記本体をカツプに延伸吹込成形するこ
とによつて、射出延伸吹込成形においても足付カ
ツプを成形することができるようにしてなる。
（実施例） 図中１は射出金型、２は吹込金型である。
射出金型１は割型で、第３図に示すプリフオー
ム３の本体３１と、底部の足部３２とを成形する
キヤビテイ１１，１２とを有する。またキヤビテ
イ１１にはコア型１３が挿入位置し、そのコア型
１３の周囲に本体３１が射出成形される。
上記吹込金型２も割型で、本体３１を収容する
とともに、第４図に示すカツプ４の本体４１を成
形するキヤビテイ２１と、足部３２の収容部２２
とを互いに接続して有する。またカツプ成形キヤ
ビテイ２１には、プリフオーム３の本体３１を軸
方向へ延伸するロツド２３を備えた吹込コア２４
が挿入位置する。
上記射出金型１及び吹込金型２は、公知の射出
延伸吹込成形機に取付けて使用される。成形は先
ず本体３１と本体底部に一体成形された足部３２
とを有するプリフオーム３を上記射出金型１をも
つて射出成形する。
次にプリフオーム３を公知手段により上記吹込
金型２のところまで移送する。そして本体３１を
カツプ成形キヤビテイ２１に、また足部３２をカ
ツプ成形キヤビテイ２１から足部収容部２２に位
置させてのち、型締を行ない、更に本体３１の開
口部に上記吹込コア２４を挿入して、本体口縁を
金型と吹込コアとにより挾持固定する。
しかるのち、上記延伸ロツド２３を伸長して本
体３１を軸方向に延伸するとともに、吹込コア２
４より本体内に空気を吹込んでキヤビテイ一杯に
膨張させ、カツプ状に成形する。上記延伸に際し
て、足部３２は金型内に可動自在に収納されてい
ることから、本体３１の軸方向の延伸に対して何
等障害となることがなく、本体３１の延伸を許容
して、そこに足部３２を本体４１の底部に一体に
有する足付カツプ４が成形される。
この発明においてプリフオーム３の本体３１及
び足部３２の形状は離型可能な範囲において任意
とする。また足部の冷却固化を目的として足部断
面を星形などに形成しもよい。
上記足付カツプ４の模様付は、吹込金型２のカ
ツプ成形キヤビテイ２１の型面を利用して行なう
ことができ、足部３２を結晶化して白化すること
もできる。
第５図から第８図は、この発明により成形可能
な幾つかの形態が異なる足付カツプの例を示すも
ので、第５図はゴブレツト状に形成した例を、第
６図はワイングラス風に形成した例をそれぞれ示
すものである。
また第７図及び第８図は、シヤーベツトやプリ
ンなどの食品用の足付容器として使用できるよう
に、本体４１の平面形状をハート形や花形に形成
した例を示すものである。
なお、上記実施例では延伸ロツド２３により延
伸をしているが、延伸は冷却固化した足部３２を
引張つて行なつてもよい。
（発明の効果） この発明は上述のように、足付のプリフオーム
を射出成形し、そのプリフオームの足部を、本体
の延伸に際して本体とともに移動するように吹込
金型に収容し、本体の軸方向延伸を自由に行なう
ことができるようにしたことから、従来困難とさ
れていた射出延伸吹込成形による足付カツプの成
形をきわめて容易に行なうことができる。また吹
込金型に足部収容部をカツプ成形キヤビテイに接
続して設けるだけでよく、延伸吹込に際しても特
に複雑な操作を要しないなどの特長を有する。
【図面の簡単な説明】
図面はこの発明に係る足付カツプの射出延伸吹
込成形方法の１実施例を示すもので、第１図は射
出金型の断面図、第２図は吹込金型の断面図、第
３図はプリフオームの断面図、第４図は足付カツ
プの断面図、第５図から第８図はこの発明により
成形できる足付カツプの斜視図である。 １……射出金型、２……吹込金型、３……プリ
フオーム、４……足付カツプ、２１……カツプ成
形キヤビテイ、２２……足部収容部、３１……プ
リフオーム本体、３２……足部、４１……本体。

Claims (1)

    【特許請求の範囲】
  1. １ 本体底部に足部を一体に有するプリフオーム
    を射出成形し、そのプリフオームをカツプ成形キ
    ヤビテイと足部収容部とを備えた吹込金型に移
    し、本体をカツプ成形キヤビテイに、かつ足部を
    カツプ成形キヤビテイから足部収容部にわたり可
    動自在に位置させたのち型締し、上記本体をカツ
    プに延伸吹込成形してなることを特徴とする足付
    カツプの射出延伸吹込成形方法。
JP23000087A 1987-09-14 1987-09-14 Injection stretching blow molding method for cup having stem Granted JPS6472825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23000087A JPS6472825A (en) 1987-09-14 1987-09-14 Injection stretching blow molding method for cup having stem

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23000087A JPS6472825A (en) 1987-09-14 1987-09-14 Injection stretching blow molding method for cup having stem

Publications (2)

Publication Number Publication Date
JPS6472825A JPS6472825A (en) 1989-03-17
JPH0549016B2 true JPH0549016B2 (ja) 1993-07-23

Family

ID=16901030

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23000087A Granted JPS6472825A (en) 1987-09-14 1987-09-14 Injection stretching blow molding method for cup having stem

Country Status (1)

Country Link
JP (1) JPS6472825A (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103448232A (zh) * 2013-09-12 2013-12-18 王磊 塑料红酒杯的成型工艺
US11235504B2 (en) 2018-01-26 2022-02-01 Nissei Asb Machine Co., Ltd. Method for manufacturing resin container part, mold unit, and blow molding machine including the mold unit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6541336B2 (ja) * 2014-11-13 2019-07-10 大成化工株式会社 少量化容器の製造方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103448232A (zh) * 2013-09-12 2013-12-18 王磊 塑料红酒杯的成型工艺
US11235504B2 (en) 2018-01-26 2022-02-01 Nissei Asb Machine Co., Ltd. Method for manufacturing resin container part, mold unit, and blow molding machine including the mold unit

Also Published As

Publication number Publication date
JPS6472825A (en) 1989-03-17

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