JPH10100238A - Method for molding bottle with handle - Google Patents
Method for molding bottle with handleInfo
- Publication number
- JPH10100238A JPH10100238A JP8258298A JP25829896A JPH10100238A JP H10100238 A JPH10100238 A JP H10100238A JP 8258298 A JP8258298 A JP 8258298A JP 25829896 A JP25829896 A JP 25829896A JP H10100238 A JPH10100238 A JP H10100238A
- Authority
- JP
- Japan
- Prior art keywords
- bottle
- handle
- blow
- mold
- blow mold
- 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
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
- B29C49/20—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
-
- 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
- B29C49/20—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
- B29C2049/2021—Inserts characterised by the material or type
- B29C2049/2034—Attachments, e.g. hooks to hold or hang the blown article
- B29C2049/2039—Handles, e.g. handles or grips on bottles
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/06—Injection blow-moulding
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、把手付きボトルの
成形方法に係り、特に把手付きボトルの把手取り付け用
凹部に発生する成形時変形を防止する事ができる把手付
きボトルの成形方法である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a bottle with a handle, and more particularly to a method for forming a bottle with a handle, which can prevent deformation at the time of forming the recess for attaching a handle of the bottle with a handle.
【0002】[0002]
【従来の技術】従来、ブロー成形型内に加熱されたプリ
フォームと、あらかじめ成形された把手とを挿入し、延
伸ブロー成形してボトルを成形するとともにボトル壁と
把手とを係合させる把手付きボトルの成形方法におい
て、成形するボトルの品質を均一に保つために、水、加
熱油等の熱媒体をブロー成形型に設けた流路に流すこと
によってブロー成形型の温度コントロールを行い、又、
ブロー成形型の材料にアルミ合金等の熱伝導の高い材料
を使用し、ブロー成形型の温度分布を均一にすることは
広く知られている。2. Description of the Related Art Conventionally, a preform heated in a blow molding die and a preformed handle are inserted, stretch blow molded to form a bottle, and a handle for engaging the bottle wall with the handle is provided. In the bottle molding method, in order to keep the quality of the bottle to be molded uniform, water, a heat medium such as heating oil is flowed through a flow path provided in the blow mold to control the temperature of the blow mold, and
It is widely known that a material having high thermal conductivity, such as an aluminum alloy, is used as a material for a blow mold to make the temperature distribution of the blow mold uniform.
【0003】[0003]
【発明が解決しようとする課題】しかし、把手取り付け
用凹部を有するボトルを延伸ブロー成形する場合には、
把手取り付け用凹部がプリフォームから近く、ボトル壁
と把手とを係合させる時の抵抗もあって、延伸倍率はボ
トルの他の部分に比べ小さく、把手取り付け用凹部の樹
脂厚みが厚くなる結果、ボトルの他の部分に比べて把手
取り付け用凹部は樹脂がブロー成形型の凹部型部分に密
着してから固化するまでの冷却時間が長くなり、樹脂の
収縮が進行し、成形されたボトルの把手取り付け用凹部
に成形時変形が発生する。However, when stretch-blow molding a bottle having a recess for attaching a handle,
The grip mounting recess is close to the preform, and there is also resistance when the bottle wall and the grip are engaged, the draw ratio is smaller than the other parts of the bottle, and the resin thickness of the grip mounting recess becomes thicker, Compared with other parts of the bottle, the handle mounting recess has a longer cooling time until the resin solidifies from the close contact with the concave mold part of the blow mold, the resin shrinks, and the molded bottle handle The mounting recess is deformed during molding.
【0004】この樹脂の収縮により、凹部型部分との密
着性が低下し冷却時間が長くなりさらに成形時変形は助
長され、ついには、成形されたボトルをブロー成形型よ
り取り出すことができなくなるトラブルを引き起こす原
因となる。[0004] Due to the shrinkage of the resin, the adhesion to the recessed mold portion is reduced, the cooling time is prolonged, and deformation during molding is promoted, and finally, the molded bottle cannot be removed from the blow mold. Cause
【0005】特に、成形後のボトルの経時的自然収縮に
対する、保管場所の周囲温度の影響を少なくするために
は、ブロー成形型温度を60〜80℃の比較的高温に設
定する必要があり、把手取り付け用凹部の成形時変形が
ますます大きくなる。[0005] In particular, in order to reduce the influence of the ambient temperature of the storage place on the natural shrinkage of the bottle after molding over time, it is necessary to set the blow mold temperature to a relatively high temperature of 60 to 80 ° C. Deformation during molding of the handle mounting recess becomes even greater.
【0006】[0006]
【課題を解決するための手段】本発明は、ブロー成形型
内に加熱されたプリフォームと、あらかじめ成形された
把手とを挿入し、延伸ブロー成形してボトルを成形する
とともにボトル壁と把手とを係合させる把手付きボトル
の成形方法であって、ブロー成形型において成形するボ
トルの把手取り付け用凹部を形成する凹部型部分に、ブ
ロー成形型本体の温度コントロール用熱媒体回路とは分
離した冷却用熱媒体回路を設けることにより、ブロー成
形型本体よりも凹部型部分を低温に設定することによ
り、ボトルの把手取り付け用凹部に発生する成形時変形
を防止する把手付きボトルの成形方法であり、ボトル壁
が凹部型部分に密着してから固化するまでの冷却時間を
短くすることができ、樹脂の収縮が抑制され、良好なボ
トルをブロ−成形することが可能となる。SUMMARY OF THE INVENTION According to the present invention, a preform heated in a blow mold and a preformed handle are inserted, stretch blow-molded to form a bottle, and a bottle wall and a handle are formed. A method for molding a bottle with a handle, wherein a cooling medium separated from the heat medium circuit for controlling the temperature of the blow molding main body is formed in a concave mold portion forming a concave portion for attaching a handle of the bottle molded in the blow molding mold. By providing a heat medium circuit for the bottle, by setting the concave mold portion at a lower temperature than the blow mold body, it is a molding method of a bottle with a handle that prevents deformation at the time of molding generated in the concave portion for attaching the handle of the bottle, It is possible to shorten the cooling time from the time when the bottle wall is brought into close contact with the concave portion to the time when it is solidified, the resin shrinkage is suppressed, and a good bottle is blow-molded. It becomes possible.
【0007】[0007]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基ずいて説明する。Embodiments of the present invention will be described below with reference to the drawings.
【0008】図1は本発明の把手付きボトルの成形方法
を実施するブロー成形型の半割型を示す正面図、図2は
図1のII−II断面図であり、図3は図1のIII −III 断
面図である。FIG. 1 is a front view showing a half mold of a blow mold for carrying out the method for molding a bottle with a handle of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. It is III-III sectional drawing.
【0009】本発明は図1〜3に示されるように、ブロ
ー成形型1内に加熱されたプリフォーム2と、あらかじ
め成形された把手3とを挿入し、延伸ブロー成形してボ
トルを成形するとともにボトル壁と把手とを係合させる
把手付きボトルの成形方法であって、ブロー成形型1に
おいて成形するボトルの把手取り付け用凹部を形成する
凹部型部分11に、ブロー成形型本体12の温度コント
ロール用熱媒体回路121とは分離した冷却用熱媒体回
路111を設けることにより、ブロー成形型本体12よ
りも凹部型部分11を低温に設定して、ボトルの把手取
り付け用凹部に発生する成形時変形を防止する把手付き
ボトルの成形方法である。As shown in FIGS. 1 to 3, the present invention inserts a heated preform 2 and a preformed handle 3 into a blow mold 1 and stretch blow-molds it to form a bottle. A method for forming a bottle with a handle, wherein a bottle wall and a handle are engaged with each other, wherein a temperature control of a blow mold main body 12 is performed in a concave mold portion 11 forming a handle mounting concave portion of the bottle to be molded in the blow mold 1. By providing the cooling heat medium circuit 111 separated from the heat medium circuit 121, the concave mold portion 11 is set at a lower temperature than the blow mold main body 12, and the deformation at the time of molding generated in the concave portion for attaching the handle of the bottle. This is a method for molding a bottle with a handle for preventing the occurrence of a bottle.
【0010】ブロー成形型本体12の温調を行う、温度
コントロール用熱媒体回路121は、把手付ボトルの型
内面形状の周囲に設けてあり、ブロー成形されたボトル
全体を温調できる。[0010] A heat medium circuit 121 for controlling the temperature of the blow molding die body 12 is provided around the inner surface of the mold of the bottle with a handle, and can regulate the temperature of the entire blow molded bottle.
【0011】その温度は、油などの熱媒体の温度を調整
して、成形後のボトルの経時的自然収縮に対する、保管
場所の周囲温度の影響を少なくするためには、ブロー成
形型温度を60℃以上で80℃未満の比較的高温に設定
するのが好ましい。In order to reduce the influence of the ambient temperature of the storage location on the natural shrinkage of the bottle after molding over time by adjusting the temperature of the heat medium such as oil, the temperature of the blow mold is set at 60 ° C. It is preferable to set the temperature to a relatively high temperature of 80 ° C. or higher and lower than 80 ° C.
【0012】凹部型部分11に形成した冷却用流路11
1は、前記ブロー成形型本体12の温度コントロール用
熱媒体回路121と分離することにより、ブロー成形型
本体12よりも凹部型部分11を低温に冷却できるよう
にしておく。Cooling channel 11 formed in recessed portion 11
1 separates the concave mold portion 11 from the blow mold body 12 to a lower temperature than the blow mold body 12 by separating from the heat medium circuit 121 for temperature control of the blow mold body 12.
【0013】その温度は、水などの冷却用熱媒体の温度
を調整して、凹部型部分11を20℃以上で60℃未満
の低温に設定して、ブロー成形されたボトルの把手取り
付け用凹部を早く冷却するのが好ましい。The temperature of the cooling medium such as water is adjusted by adjusting the temperature of the concave portion 11 to a low temperature of 20 ° C. or higher and lower than 60 ° C. Is preferably cooled quickly.
【0014】この冷却用流路111は、図1に示すよう
に把手付ボトルの把手取り付け用凹部の壁面との距離d
1を、例えば2〜20mm程度に小さくして近付けるこ
とにより、その部分の製品面の温度を冷却用熱媒体の温
度に近づけることができ、また、冷却効果を上げること
ができ、好ましい。As shown in FIG. 1, the cooling channel 111 has a distance d from the wall surface of the handle mounting recess of the bottle with handle.
By setting 1 closer to, for example, about 2 to 20 mm, the temperature of the product surface in that portion can be made closer to the temperature of the cooling heat medium, and the cooling effect can be improved, which is preferable.
【0015】また、図2に示すように、ブロー成形型の
合わせ面からの距離d2を、例えば1〜20mm程度に
小さくして近付けることにより、プリフォームに近い部
分まで冷却し、加熱されたプリフォームから受ける熱負
荷による蓄熱による温度上昇を防止することができ、好
ましい。Further, as shown in FIG. 2, the distance d2 from the mating surface of the blow mold is reduced to, for example, about 1 to 20 mm so that the part close to the preform is cooled and heated. This is preferable because temperature rise due to heat storage due to a heat load received from the reform can be prevented.
【0016】さらに、図2、3に示すように、ブロー成
形型1外部から把手付ボトルの把手取り付け用凹部迄の
冷却用熱媒体の流路は、把手付ボトルの把手取り付け用
凹部以外のブロー成形型製品面の温度に冷却用熱媒体の
影響が出ないように、ブロー成形型製品面からの距離d
3を、例えば10〜40mmと離れた位置に設置し、か
つ、冷却用熱媒体の流入、流出の流路の間隔c1を、例
えば1〜15mmと近付けることにより、冷却用熱媒体
によるブロー成形型本体12の設定温度の低下の影響を
最小限にするとともに、ブロー成形型本体12から受け
る熱負荷による冷却用熱媒体の流入温度の上昇を低減す
ることができ、把手付ボトルの把手取り付け用凹部での
冷却用熱媒体の温度とブロー成形型1流入前の冷却用熱
媒体の温度との温度差を低減し、また、ブロー成形型か
ら受ける冷却用熱媒体の熱負荷を低減することにより、
冷却用熱媒体の冷却装置の冷却負荷を軽減され、ランニ
ングコストを最小限に押さえることができる。Further, as shown in FIGS. 2 and 3, the flow path of the cooling heat medium from the outside of the blow mold 1 to the recess for attaching the handle of the bottle with the handle is formed by a blower other than the recess for attaching the handle of the bottle with the handle. The distance d from the blow mold product surface should be such that the temperature of the mold product surface is not affected by the cooling medium.
3 is set at a position distant from 10 to 40 mm, for example, and the interval c1 between the flow paths of the inflow and outflow of the heat medium for cooling is made close to 1 to 15 mm, for example. In addition to minimizing the effect of the decrease in the set temperature of the main body 12, the rise in the inflow temperature of the cooling heat medium due to the heat load received from the blow molding main body 12 can be reduced. By reducing the temperature difference between the temperature of the cooling heat medium at the time and the temperature of the cooling heat medium before flowing into the blow mold 1 and reducing the heat load of the cooling heat medium received from the blow mold,
The cooling load of the cooling device for the cooling heat medium is reduced, and running costs can be minimized.
【0017】[0017]
【発明の効果】本発明は、ブロー成形型内に加熱された
プリフォームと、あらかじめ成形された把手とを挿入
し、延伸ブロー成形してボトルを成形するとともにボト
ル壁と把手とを係合させる把手付きボトルの成形方法で
あって、ブロー成形型において成形するボトルの把手取
り付け用凹部を形成する凹部型部分に、ブロー成形型本
体の温度コントロール用熱媒体回路とは分離した冷却用
熱媒体回路を設けることにより、ブロー成形型本体より
も凹部型部分を低温に設定して、ボトルの把手取り付け
用凹部に発生する成形時変形を防止する把手付きボトル
の成形方法であるので、ボトル壁が凹部型部分に密着し
てから固化するまでの冷却時間を短くすることができ、
樹脂の収縮が抑制され、良好なボトルをブロ−成形する
ことが可能となる。According to the present invention, a preform heated in a blow mold and a handle previously formed are inserted, stretch blow-molded to form a bottle, and the bottle wall is engaged with the handle. A method for molding a bottle with a handle, wherein a heat transfer medium circuit for cooling separated from a heat transfer medium circuit for temperature control of a blow molding main body is provided in a recessed portion for forming a handle mounting recess of a bottle to be formed in a blow molding die. Is provided, the concave portion is set at a lower temperature than the blow molding main body, and this is a method for molding a bottle with a handle that prevents deformation during molding that occurs in the concave portion for attaching the handle of the bottle. The cooling time from the close contact with the mold to the solidification can be shortened,
Resin shrinkage is suppressed, and a good bottle can be blow-molded.
【図1】本発明の把手付きボトルの成形方法を実施する
ブロー成形型の半割型を示す正面図FIG. 1 is a front view showing a half mold of a blow mold for carrying out a method for molding a bottle with a handle of the present invention.
【図2】図1のII−II断面図FIG. 2 is a sectional view taken along line II-II of FIG.
【図3】図1のIII −III 断面図FIG. 3 is a sectional view taken along the line III-III in FIG. 1;
1 ブロー成形型 11 凹部型部分 111 冷却用熱媒体回路 12 ブロー成形型本体 121 温度コントロール用熱媒体回路 2 プリフォーム2 3 把手 DESCRIPTION OF SYMBOLS 1 Blow mold 11 Concave mold part 111 Heat medium circuit for cooling 12 Blow mold body 121 Heat medium circuit for temperature control 2 Preform 2 3 Handle
Claims (1)
ムと、あらかじめ成形された把手とを挿入し、延伸ブロ
ー成形してボトルを成形するとともにボトル壁と把手と
を係合させる把手付きボトルの成形方法であって、ブロ
ー成形型において成形するボトルの把手取り付け用凹部
を形成する凹部型部分に、ブロー成形型本体の温度コン
トロール用熱媒体回路とは分離した冷却用熱媒体回路を
設けることにより、ブロー成形型本体よりも凹部型部分
を低温に設定して、ボトルの把手取り付け用凹部に発生
する成形時変形を防止する把手付きボトルの成形方法。1. A pre-heated preform and a preformed handle are inserted into a blow mold, stretch blow-molded to form a bottle, and a bottle with a handle for engaging the bottle wall with the handle. In a molding method, a cooling heat medium circuit separated from a temperature control heat medium circuit of a blow molding main body is provided in a concave mold portion for forming a grip attaching concave portion of a bottle to be molded in a blow molding mold. A method for forming a bottle with a handle, wherein the temperature of the concave portion is set lower than that of the blow mold main body to prevent deformation at the time of forming the concave portion for mounting the handle of the bottle.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8258298A JP2960689B2 (en) | 1996-09-30 | 1996-09-30 | Molding method of bottle with handle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8258298A JP2960689B2 (en) | 1996-09-30 | 1996-09-30 | Molding method of bottle with handle |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH10100238A true JPH10100238A (en) | 1998-04-21 |
JP2960689B2 JP2960689B2 (en) | 1999-10-12 |
Family
ID=17318321
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8258298A Expired - Lifetime JP2960689B2 (en) | 1996-09-30 | 1996-09-30 | Molding method of bottle with handle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2960689B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013125401A1 (en) * | 2012-02-23 | 2013-08-29 | 日精エー・エス・ビー機械株式会社 | Blow molding method, blow mold, and blow-molded container |
KR101390703B1 (en) * | 2012-02-23 | 2014-04-30 | 새한프라텍 주식회사 | Pet bottle handle attaching method |
CN104875363A (en) * | 2015-05-28 | 2015-09-02 | 广州达意隆包装机械股份有限公司 | Thermal forming device for container with handle |
WO2021212622A1 (en) * | 2020-04-20 | 2021-10-28 | 广州达意隆包装机械股份有限公司 | Heating device for blowing bottle preform having handle |
-
1996
- 1996-09-30 JP JP8258298A patent/JP2960689B2/en not_active Expired - Lifetime
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013125401A1 (en) * | 2012-02-23 | 2013-08-29 | 日精エー・エス・ビー機械株式会社 | Blow molding method, blow mold, and blow-molded container |
KR101390703B1 (en) * | 2012-02-23 | 2014-04-30 | 새한프라텍 주식회사 | Pet bottle handle attaching method |
JPWO2013125401A1 (en) * | 2012-02-23 | 2015-07-30 | 日精エー・エス・ビー機械株式会社 | Blow molding method, blow mold and blow molded container |
AU2013223355B2 (en) * | 2012-02-23 | 2015-10-01 | Nissei Asb Machine Co., Ltd. | Blow molding method, blow mold, and blow-molded container |
US9802729B2 (en) | 2012-02-23 | 2017-10-31 | Nissei Asb Machine Co., Ltd. | Blow molding method, blow mold, and blow-molded container |
CN104875363A (en) * | 2015-05-28 | 2015-09-02 | 广州达意隆包装机械股份有限公司 | Thermal forming device for container with handle |
WO2021212622A1 (en) * | 2020-04-20 | 2021-10-28 | 广州达意隆包装机械股份有限公司 | Heating device for blowing bottle preform having handle |
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