JPS6210818B2 - - Google Patents
Info
- Publication number
- JPS6210818B2 JPS6210818B2 JP60167331A JP16733185A JPS6210818B2 JP S6210818 B2 JPS6210818 B2 JP S6210818B2 JP 60167331 A JP60167331 A JP 60167331A JP 16733185 A JP16733185 A JP 16733185A JP S6210818 B2 JPS6210818 B2 JP S6210818B2
- Authority
- JP
- Japan
- Prior art keywords
- handle
- container
- polyester
- panel
- wall
- 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
Links
- 238000003825 pressing Methods 0.000 claims description 26
- 229920000728 polyester Polymers 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 15
- 230000009477 glass transition Effects 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 238000001953 recrystallisation Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000000071 blow moulding Methods 0.000 description 9
- -1 polyethylene terephthalate Polymers 0.000 description 9
- 229920000139 polyethylene terephthalate Polymers 0.000 description 7
- 239000005020 polyethylene terephthalate Substances 0.000 description 7
- 229920001225 polyester resin Polymers 0.000 description 4
- 239000004645 polyester resin Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000002087 whitening effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920000874 polytetramethylene terephthalate Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
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
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C49/4802—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D23/00—Details of bottles or jars not otherwise provided for
- B65D23/10—Handles
-
- 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
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C49/4802—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
- B29C2049/4807—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity by movable mould parts in the mould halves
-
- 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
- B29C49/04—Extrusion blow-moulding
-
- 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
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C49/4802—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
- B29C49/4812—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity and welding opposite wall parts of the parisons or preforms to each other
-
- 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
- B29L2031/46—Knobs or handles, push-buttons, grips
- B29L2031/463—Grips, handles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は把手付ポリエステル容器の製造方法に
関し、さらに詳しくは容器主部と連通する中空部
を有する把手を備えた２軸延伸吹込ポリエステル
容器の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for manufacturing a polyester container with a handle, and more specifically to a method for manufacturing a biaxially stretched blown polyester container having a handle having a hollow portion communicating with the main portion of the container. Regarding the manufacturing method.
（従来の技術）
従来提案されている２軸延伸吹込ポリエステル
容器であつて中空の把手を有するものの製造方法
は、例えば予備２軸延伸吹込成形体を半溶融の段
階でヒートシールして孔部を有する取手原形部を
形成し、次にこれを再び２軸延伸吹込成形して所
定の形状とすることであつた。(Prior Art) A conventionally proposed manufacturing method for a biaxially stretched blown polyester container having a hollow handle includes, for example, heat-sealing a preliminary biaxially stretched blown polyester container at a semi-molten stage to close the holes. The first step was to form a handle original shape having a handle shape, and then biaxially stretch blow mold this again to obtain a predetermined shape.
（発明が解決しようとする問題点）
このような方法で作られた容器は、把手の内側
（孔部側）におけるヒートシール部の完全なシー
ルを得ることが困難なため（ポリエステル樹脂は
融点が高いため、ポリオレフイン樹脂等にくらべ
て一般に熱融着が難しい）内容液の漏洩を招き易
く、さらに２軸延伸吹込成形を２度にわたつて行
なうので、工程が複雑で、そのため品質の安定性
に欠けるという問題を有する。(Problems to be Solved by the Invention) Containers made by this method are difficult to completely seal the heat-sealed part on the inside of the handle (hole side) (polyester resin has a low melting point). It is generally difficult to heat-seal (compared to polyolefin resins, etc.) because of its high temperature and is generally difficult to heat-seal.In addition, the process is complicated because biaxial stretch blow molding is performed twice, and the stability of quality is affected. There is a problem of chipping.
（発明の目的）
本発明は、１回の２軸延伸吹込成形によつて形
成可能で、しかも把手の内側から内容液が漏洩す
るおそれのない把手付２軸延伸吹込ポリエステル
容器の製造方法を提供することを目的とする。(Objective of the Invention) The present invention provides a method for manufacturing a biaxially stretched blown polyester container with a handle that can be formed by one-time biaxially stretched blow molding and that is free from the risk of leakage of the liquid content from the inside of the handle. The purpose is to
（発明の構成）
本発明は、容器主部と連通する中空部を有する
把手を備え、対向する接近した該容器の壁部より
なるパネル部によつて、該把手と該容器主部が連
接している把手付２軸延伸吹込ポリエステル容器
の製造方法であつて、該容器主部に対応する形状
のキヤビテイ主部、および該把手の外端面に対応
する面によつて画定され、該中空部の直径と厚さ
がほぼ等しい舌状部に形成された、該把手と該パ
ネル部に対応するキヤビテイ部分を有し、該舌状
部の該パネル部に対応する部分の壁面は、対向し
互に対応する形状の端面を有する押圧部材の該端
面によつて形成されている金型を用いて、該キヤ
ビテイ主部の壁面および該舌状部の該把手の外端
面に対応する部分の壁面が、該ポリエステルのガ
ラス転移点より低い温度に保持され、該舌状部の
該パネル部およびその周辺部に対応する部分の壁
面が該ガラス転移点以上で、該ポリエステルの再
結晶開始温度より低い温度に保持された状態にお
いて、ポリエステル有底パリソンを２軸延伸吹込
成形してプレフオームを形成し、直ちに該押圧部
材を互に接近せしめて該パネル部を形成すること
を特徴とする、把手付２軸延伸吹込ポリエステル
容器の製造方法を提供するものである。(Structure of the Invention) The present invention includes a handle having a hollow portion that communicates with the main portion of the container, and the handle and the main portion of the container are connected to each other by a panel portion consisting of opposing and close wall portions of the container. A method for manufacturing a biaxially stretched blown polyester container with a handle, the cavity being defined by a main part of the cavity having a shape corresponding to the main part of the container, and a surface corresponding to the outer end surface of the handle, It has a cavity portion formed in a tongue portion having approximately equal diameter and thickness and corresponding to the handle and the panel portion, and the wall surfaces of the portion of the tongue portion corresponding to the panel portion are opposite to each other. Using a mold formed by the end surface of a pressing member having a correspondingly shaped end surface, the wall surface of the cavity main portion and the wall surface of the portion of the tongue portion corresponding to the outer end surface of the handle are The temperature is maintained at a temperature lower than the glass transition point of the polyester, and the wall surface of a portion of the tongue portion corresponding to the panel portion and its peripheral portion is maintained at a temperature higher than the glass transition point and lower than the recrystallization start temperature of the polyester. In the held state, the polyester bottomed parison is biaxially stretched and blow molded to form a preform, and the pressing members are immediately brought close to each other to form the panel portion. A method of manufacturing a blown polyester container is provided.
本発明において、ポリエステルとは、ポリエチ
レンテレフタレート、ポリテトラメチレンテレフ
タレート等あるいはそれらの共重合体もしくはブ
レンド等の熱可塑性飽和ポリエステル樹脂を称す
る。 In the present invention, polyester refers to thermoplastic saturated polyester resins such as polyethylene terephthalate, polytetramethylene terephthalate, etc., or copolymers or blends thereof.
（本発明の方法で製造される容器の態様）
第１図、第２図の１は、本発明の把手付２軸延
伸吹込ポリエステル容器の第１の態様を示したも
のであつて、容器主部２と把手３の間に、パネル
部４が形成されており、そのためパネル部４を底
部とする凹部５がパネル部４の両側に形成され
て、把手３を手指で掴むのが容易となるように構
成されている。把手３には中空部６が形成されて
おり、中空部６は容器主部２の内部と連通してお
り、従つて液体等の内容物は把手３の内部すなわ
ち中空部６にも収容されるようになつている。パ
ネル部４は、容器主部２と把手３の各々の壁部２
ａおよび３ａに連接する２層の密接した壁部４ａ
よりなつている。(Aspects of the container manufactured by the method of the present invention) 1 in FIGS. 1 and 2 shows a first aspect of the biaxially stretched blown polyester container with a handle of the present invention, in which the main body of the container is A panel portion 4 is formed between the portion 2 and the handle 3, and therefore, recesses 5 with the panel portion 4 as the bottom are formed on both sides of the panel portion 4, making it easy to grasp the handle 3 with fingers. It is configured as follows. A hollow part 6 is formed in the handle 3, and the hollow part 6 communicates with the inside of the container main part 2, so that the contents such as liquid are also accommodated inside the handle 3, that is, the hollow part 6. It's becoming like that. The panel portion 4 includes wall portions 2 of each of the container main portion 2 and the handle 3.
two layers of close walls 4a connected to a and 3a;
It's getting more familiar.
第３図は第１の態様と殆んど同じ構成である
が、パネル部４の対向する壁部４ａの間に若干の
間隙７が存する点のみが異なる第２の態様の容器
の要部を示したものである。凹部５をできるだけ
深くして把手３を掴み易くするという見地から
は、間隙７は存在しない方が好ましいのである
が、若干の間隙７（例えば１〜２mm程度の）が存
在しても特に大きな悪影響はない。 FIG. 3 shows the main parts of the container of the second embodiment, which has almost the same configuration as the first embodiment, but differs only in that there is a slight gap 7 between the opposing wall parts 4a of the panel part 4. This is what is shown. From the standpoint of making the recess 5 as deep as possible and making it easier to grip the handle 3, it is preferable that the gap 7 does not exist, but even if there is a slight gap 7 (for example, about 1 to 2 mm), it will have a particularly large negative effect. There isn't.
第４図は本発明の方法により製造される第３の
態様の容器を示したものであつて、把手３と容器
主部２の各中心線を結ぶ面の片側に寄つて、パネ
ル部４が設けられており、従つて凹部５はパネル
部４のほとんど片側（壁部４a2側）のみに形成さ
れており、反対側（壁部４a1側）は僅かに凹んで
いるにすぎない。またパネル部の対向する壁部４
a1と４a2は密接している。この場合は凹部５が第
２図、第３図の態様にくらべて、より深いので特
に左手での把持がより容易である。なお第４図と
同様の構成で、ただ凹部５を図の上方に設ける点
のみを異にするようにすれば、右手で把持し易く
することができる。 FIG. 4 shows a third embodiment of the container manufactured by the method of the present invention, in which the panel portion 4 is located on one side of the surface connecting the center lines of the handle 3 and the container main portion 2. Therefore, the recessed portion 5 is formed almost only on one side (wall portion 4a 2 side) of the panel portion 4, and the opposite side (wall portion 4a 1 side) is only slightly recessed. Also, the wall portion 4 facing the panel portion
a 1 and 4a 2 are close together. In this case, the concave portion 5 is deeper than the embodiments shown in FIGS. 2 and 3, so it is easier to grasp, especially with the left hand. It should be noted that if the configuration is the same as that in FIG. 4, but the only difference is that the recess 5 is provided above the figure, it can be made easier to hold with the right hand.
（実施例）
以下代表的なポリエステル樹脂であるポリエチ
レンテレフタレートの例によつて、第１図、第２
図に示される本考案の第１の態様の容器の製造方
法について説明する。(Example) The following is an example of polyethylene terephthalate, which is a typical polyester resin.
A method for manufacturing the container according to the first aspect of the present invention shown in the figures will be described.
（金型の構成）
第５図は本発明の第１の態様の容器を製造する
ために使用する２軸延伸吹込成形用金型８の内面
を示したものであつて、金型８はネツク型９、胴
型１０および底型１１よりなつている。胴型１０
は２個の半割型よりなり、１２はキヤビテイ、１
３は半割型同士の接触すべき面を示す。９ａ，１
０ａおよび１１ａは夫々、ネツク型９、胴型１０
の大部分および底面１１の内面（キヤビテイ壁
面）を、ポリエチレンテレフタレートの延伸後の
ガラス転移点（ほぼ80℃）より低い温度に保つた
めの冷却水を貫通させる冷却孔を示す。(Mold Configuration) FIG. 5 shows the inner surface of the biaxial stretch blow molding mold 8 used for manufacturing the container of the first embodiment of the present invention. It consists of a mold 9, a body mold 10 and a bottom mold 11. Torso type 10
consists of two half molds, 12 is the cavity, 1
3 indicates the surface where the half molds should come into contact with each other. 9a, 1
0a and 11a are neck type 9 and body type 10, respectively.
It shows cooling holes through which cooling water passes to keep most of the surface and the inner surface of the bottom surface 11 (cavity wall surface) at a temperature lower than the glass transition point (approximately 80° C.) of polyethylene terephthalate after stretching.
容器１のパネル部４に対応する胴型１０の位置
に、１対の対向する押圧部材１４が設けられてお
り、押圧部材１４は図示されない駆動機構（例え
ば空圧シリンダー）によつて半割胴型の接触面１
３と直角方向にスリーブ１５に沿つて往復動可能
となつている（第６図）。スリーブ１５と胴型１
０の本体は耐熱性の断熱シート１６（例えば弗素
樹脂シート）によつて隔離されている。押圧部材
１４とスリーブ１５には夫々加熱体１８および１
９が内蔵されていて、押圧部材１４の押圧面（端
面）１４ａ（対応するパネル部４の壁面と等しい
形状を有し、相対する押圧面は互に対応する形状
を有する；第６図の場合は互に平方な平面）およ
びスリーブ１５の内面１５ａは、２軸延伸吹込成
形後のポリエチレンテレフタレートのガラス転移
点以上であつて好ましくは再結晶開始温度より低
い温度に保持される。 A pair of opposing pressing members 14 is provided at a position on the body mold 10 corresponding to the panel portion 4 of the container 1, and the pressing members 14 are driven by a drive mechanism (for example, a pneumatic cylinder) not shown to separate the half-shell Mold contact surface 1
3 and can reciprocate along the sleeve 15 in a direction perpendicular to the sleeve 15 (FIG. 6). Sleeve 15 and body mold 1
0 is isolated by a heat-resistant heat insulating sheet 16 (for example, a fluororesin sheet). The pressing member 14 and the sleeve 15 are provided with heating bodies 18 and 1, respectively.
9 is built-in, and the pressing surface (end surface) 14a of the pressing member 14 (has the same shape as the wall surface of the corresponding panel section 4, and the opposing pressing surfaces have shapes corresponding to each other; in the case of FIG. 6 (are mutually square planes) and the inner surface 15a of the sleeve 15 are maintained at a temperature that is higher than the glass transition point of polyethylene terephthalate after biaxial stretch blow molding and preferably lower than the recrystallization start temperature.
第６図より明らかのように、胴型内面１０ｂ、
断熱シートの内面１６ａ、スリーブ内面１５ａお
よび押圧面１４ａは、２軸延伸吹込成形時に、互
に段差のない連続した面を形成していることが好
ましい。容器１のできるたけ平滑な外面を確保す
るためである。１７は２軸延伸吹込成形体であつ
て、１７ａは容器１の容器主部の壁部２ａに対応
する壁部であり、１７ｂは把手の壁部３ａに対応
する壁部であつて、断面ほぼ半円状であり、何れ
も胴型内面１０ｂと接触している。上記壁部１７
ａと１７ｂの間の断面平行な（但し壁１７ａ側は
若干拡開している）中間壁部１７ｃは、スリーブ
内面１５ａおよび押圧面１４ａと接触している。 As is clear from FIG. 6, the trunk-shaped inner surface 10b,
It is preferable that the inner surface 16a of the heat insulating sheet, the inner surface 15a of the sleeve, and the pressing surface 14a form a continuous surface with no step difference during biaxial stretch blow molding. This is to ensure that the outer surface of the container 1 is as smooth as possible. Reference numeral 17 is a biaxially stretched blow-molded body, 17a is a wall corresponding to the wall 2a of the main part of the container 1, 17b is a wall corresponding to the wall 3a of the handle, and the cross section is approximately It has a semicircular shape, and both are in contact with the inner surface 10b of the barrel mold. The wall portion 17
An intermediate wall portion 17c between a and 17b whose cross section is parallel (however, the wall 17a side is slightly widened) is in contact with the sleeve inner surface 15a and the pressing surface 14a.
すなわちキヤビテイ１２は、容器主部に対応す
る形状のキヤビテイ主部と、把手３の外端面に対
応する面によつて画定され、中空部の直径と厚さ
がほぼ等しい舌状部を形成された、把手３とパネ
ル部４に対応するキヤビテイル部分よりなつてい
る。 That is, the cavity 12 is defined by a cavity main part having a shape corresponding to the container main part and a surface corresponding to the outer end surface of the handle 3, and a tongue-shaped part is formed in which the diameter and thickness of the hollow part are approximately equal. , consists of a handle 3 and a cavity tail portion corresponding to the panel portion 4.
成形終了直後の成形体１７の壁部１７ａおよび
１７ｂは共に胴型内面１０ｂに急冷されて、ガラ
ス転移点より低い温度となり変形し難く、一方中
間壁部１７ｃはガラス転移点以上の温度に保持さ
れるので変形可能である。なお、押圧面１４ａお
よび内面１５ａを再結晶開始温度より低い温度に
保持することにより、中間壁部１７ｃの白化が防
止される。 Immediately after completion of molding, the walls 17a and 17b of the molded body 17 are both rapidly cooled by the inner surface 10b of the body mold and have a temperature lower than the glass transition point, making them difficult to deform, while the intermediate wall portion 17c is maintained at a temperature higher than the glass transition point. It is deformable because it is Note that whitening of the intermediate wall portion 17c is prevented by maintaining the pressing surface 14a and the inner surface 15a at a temperature lower than the recrystallization start temperature.
（作用）
以上の金型１１を用いて、第１の態様の容器１
は次のようにして製造される。(Function) Using the above mold 11, the container 1 of the first aspect
is manufactured as follows.
まずガラス転移点以上であつて再結晶開始温度
より低い温度、好ましくは約90〜110℃に加熱さ
れた射出成形有底ポリエチレンテレフタレートパ
リソン（図示せず）を、第５図の型式の金型内に
装入し、その頚部をネツク型９で保持する。この
さい中間壁部１７ｃと接触すべき胴型の押圧面１
４ａおよびスリーブ内面１５ａを延伸後のポリエ
チレンテレフタレートのガラス転移点（約80℃）
以上であつて好ましくはその再結晶開始温度より
低い温度に保持しておき、一方他の金型内面を上
記ガラス転移点（約80℃）より低い温度に保持し
ておく。その後延伸棒（図示せず）を圧入して、
常法により２軸延伸吹込成形を行なつて、成形体
１７を成形する。成形体１７の中間壁部１７ｃ以
外の胴壁部１７ａ，１７ｂが、胴型の内面１０ｂ
との接触により、上記ガラス転移点（約80℃）よ
り低温になつたら、直ちに対向する押圧部材１４
の各々を胴型１０の内部に等距離づつ押入して、
第７図に示すように押圧面１４ａと接触する中間
壁部１７c′（パネル部の壁部４ａに対応する）の
部分を密接せしめ、パネル部４を形成する。その
さい中間壁部のうち容器主部となるべき側の部分
１７c″および把手となるべき側の部分１７ｃも
ガラス転移点以上の温度にあるので、容易に変形
し、一方それ以外の胴壁部１７ａ，１７ｂはガラ
ス転移点より低い温度にあるので変形しないの
で、第７図に示されるように、パネル部４となる
べき部分の周辺の容器主部２と把手３が画定さ
れ、所定形状の延伸ポリエステル容器を形成でき
る。 First, an injection-molded polyethylene terephthalate parison (not shown) heated to a temperature above the glass transition point and below the recrystallization start temperature, preferably about 90 to 110°C, is placed in a mold of the type shown in Fig. 5. and hold the neck with a neck mold 9. At this time, the barrel-shaped pressing surface 1 that should come into contact with the intermediate wall portion 17c
Glass transition point of polyethylene terephthalate after stretching 4a and sleeve inner surface 15a (approximately 80°C)
Above this, the temperature is preferably kept lower than the recrystallization start temperature, while the other inner surface of the mold is kept at a temperature lower than the glass transition point (approximately 80° C.). After that, a stretching rod (not shown) is press-fitted,
A molded body 17 is formed by biaxial stretch blow molding using a conventional method. The body wall parts 17a and 17b other than the intermediate wall part 17c of the molded body 17 are the inner surface 10b of the body mold.
As soon as the temperature becomes lower than the glass transition point (approximately 80°C) due to contact with the pressing member 14 facing the
Push each of them into the body mold 10 at equal distances,
As shown in FIG. 7, the panel portion 4 is formed by bringing the portion of the intermediate wall portion 17c' (corresponding to the wall portion 4a of the panel portion) in contact with the pressing surface 14a into close contact with each other. At this time, the portion 17c'' of the intermediate wall that is to become the main part of the container and the portion 17c that is to be the handle are also easily deformed because they are at a temperature above the glass transition point. 17a and 17b do not deform as they are at a temperature lower than the glass transition point, so as shown in FIG. Stretched polyester containers can be formed.
次いで押圧部材１４を原位置に戻し（後から戻
してもよい）、金型８を開いてパネル部４の形成
された成形体１７′を取出す。成形体１７′が第２
図の容器１となる。 Next, the pressing member 14 is returned to its original position (it may be returned later), the mold 8 is opened, and the molded body 17' having the panel portion 4 formed thereon is taken out. The molded body 17' is the second
This will be container 1 in the figure.
第３図の態様の容器１は、押圧部材１４を押入
するさい、中間壁部１７c′の内面間に若干の間隙
（間隙７と等しい）が生ずる位置で押圧部材１４
を停止させることによつて製造することができ
る。 In the container 1 of the embodiment shown in FIG. 3, when the pressing member 14 is pushed in, the pressing member 14 is inserted at a position where a slight gap (equal to the gap 7) is created between the inner surfaces of the intermediate wall portion 17c'.
It can be produced by stopping the
また第４図の態様の容器１は、対向する押圧部
材１４のうち、下方の押圧部材１４（第６図にお
いて）の押入量を多くし、上方の押圧部材１４の
押入量を僅小にすることによつて、第２図の態様
の場合と同様にして製造することができる。 Moreover, in the container 1 of the embodiment shown in FIG. 4, among the opposing pressing members 14, the pushing amount of the lower pressing member 14 (in FIG. 6) is increased, and the pushing amount of the upper pressing member 14 is minimized. In this case, it can be manufactured in a manner similar to that of the embodiment of FIG.
以上はポリエチレンテレフタレートを使用する
場合について述べたが、他の飽和ポリエステル樹
脂の容器も、加熱または冷却温度が異なる点を除
いてはほぼ同様にして製造することができる。 Although the case where polyethylene terephthalate is used has been described above, containers made of other saturated polyester resins can be manufactured in substantially the same manner except that the heating or cooling temperature is different.
なお押圧部材１４の押圧面（端面）１４ａを、
片方は若干突出した曲面状に、他方は前者に対応
する形状の若干凹んだ曲面にすることによつて、
パネル部４を曲面状に形成してもよい。 Note that the pressing surface (end surface) 14a of the pressing member 14 is
By making one side a slightly protruding curved surface and the other a slightly concave curved surface corresponding to the former,
The panel portion 4 may be formed into a curved shape.
（発明の効果）
本発明によれば、１回の２軸延伸吹込成形によ
つて、白化を生ずることなく、所定形状の把手付
延伸ポリエステル容器を製造されることができる
ので、従来の２回の２軸延伸吹込成形によつて製
造された把手付容器にくらべて、工程が簡単で品
質が安定しているという効果を奏する。(Effects of the Invention) According to the present invention, a stretched polyester container with a handle of a predetermined shape can be manufactured by one-time biaxial stretching blow molding without causing whitening. Compared to containers with handles manufactured by biaxial stretch blow molding, the process is simpler and the quality is more stable.
さらに把手がパネル部によつて容器主部と連接
しており、把手には孔部が形成されず、把手の壁
部には熱融着部等の継目を形成することがないの
で、不完全な継目にもとづく内容液の漏洩や外気
の侵入等が起ることがないという効果を有する。 Furthermore, since the handle is connected to the main part of the container through the panel, no hole is formed in the handle, and no joints such as heat-sealed parts are formed in the wall of the handle, so it is not perfect. This has the effect that leakage of the liquid content and intrusion of outside air due to joints will not occur.
第１図は本発明の方法で製造された容器の正面
図、第２図は第１図の−線に沿う横断面図で
あつて、本発明の方法で製造された第１の態様の
容器の要部を示す図面、第３図は第１図−線
に沿う横断面図であつて、本発明の方法で製造さ
れた第２の態様の容器の要部を示す図面、第４図
は第１図の−線に沿う横断面図であつて、本
発明の方法で製造された第３の態様の容器の要部
を示す図面、第５図は本発明の実施に使用される
金型の例の胴割型の接触面に沿う縦断面図、第６
図は第５図の−線に沿う横断面図であつて、
２軸延伸吹込成形直後の状態を示す図面、第７図
は第６図の成形後、パネル部が形成された状態を
示す金型の横断面図である。
１……把手付２軸延伸吹込ポリエステル容器、
２……容器主部、２ａ……壁部、３……把手、３
ａ……壁部、４……パネル部、４ａ，４a1，４a2
……壁部、６……中空部、１４……押圧部材、１
４ａ……押圧面（端面）。
FIG. 1 is a front view of a container manufactured by the method of the present invention, and FIG. 2 is a cross-sectional view taken along the line - in FIG. 1, which is a first embodiment of the container manufactured by the method of the present invention. FIG. 3 is a cross-sectional view taken along the line of FIG. FIG. 1 is a cross-sectional view taken along line - in FIG. 1, showing the main parts of a third embodiment of the container manufactured by the method of the present invention, and FIG. 5 is a mold used for carrying out the present invention. A vertical cross-sectional view along the contact surface of the split-body mold of the example, No. 6
The figure is a cross-sectional view taken along the - line in FIG.
A drawing showing a state immediately after biaxial stretch blow molding, and FIG. 7 is a cross-sectional view of the mold showing a state in which a panel portion is formed after the molding shown in FIG. 6. 1... Biaxially stretched blown polyester container with handle,
2...Container main part, 2a...Wall part, 3...Handle, 3
a...Wall part, 4...Panel part, 4a, 4a 1 , 4a 2
... Wall part, 6 ... Hollow part, 14 ... Pressing member, 1
4a... Pressing surface (end surface).
Claims (1)
え、対向する接近した該容器の壁部よりなるパネ
ル部によつて、該把手と該容器主部が連接してい
る把手付２軸延伸吹込ポリエステル容器の製造方
法であつて、該容器主部に対応する形状のキヤビ
テイ主部、および該把手の外端面に対応する面に
よつて画定され、該中空部の直径と厚さがほぼ等
しい舌状部に形成された、該把手と該パネル部に
対応するキヤビテイ部分を有し、該舌状部の該パ
ネル部に対応する部分の壁面は、対向し互に対応
する形状の端面を有する押圧部材の該端面によつ
て形成されている金型を用いて、該キヤビテイ主
部の壁面および該舌状部の該把手の外端面に対応
する部分の壁面が、該ポリエステルのガラス転移
点より低い温度に保持され、該舌状部の該パネル
部およびその周辺部に対応する部分の壁面が該ガ
ラス転移点以上で、該ポリエステルの再結晶開始
温度より低い温度に保持された状態において、ポ
リエステル有底パリソンを２軸延伸吹込成形して
プレフオームを形成し、直ちに該押圧部材を互に
接近せしめて該パネル部を形成することを特徴と
する、把手付２軸延伸吹込ポリエステル容器の製
造方法。1. A biaxial stretch blower with a handle, which is provided with a handle having a hollow part that communicates with the main part of the container, and in which the handle and the main part of the container are connected by a panel part made of opposing and close walls of the container. A method for manufacturing a polyester container, the tongue being defined by a main cavity portion having a shape corresponding to the main portion of the container, and a surface corresponding to the outer end surface of the handle, and having a diameter and thickness of the hollow portion substantially equal to each other. A pressing member having a cavity portion formed in a shaped portion and corresponding to the handle and the panel portion, and wall surfaces of the portion of the tongue portion corresponding to the panel portion facing each other and having end surfaces having shapes corresponding to each other. Using a mold formed by the end surface of the member, the wall surface of the main cavity part and the wall surface of the portion of the tongue portion corresponding to the outer end surface of the handle are lower than the glass transition point of the polyester. In a state where the wall surface of the portion of the tongue portion corresponding to the panel portion and its peripheral portion is maintained at a temperature equal to or higher than the glass transition point and lower than the recrystallization start temperature of the polyester, the polyester A method for manufacturing a biaxially stretched blown polyester container with a handle, characterized in that a bottom parison is biaxially stretched blow molded to form a preform, and the pressing members are immediately brought close to each other to form the panel portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60167331A JPS6143535A (en) | 1985-07-29 | 1985-07-29 | Manufacture of polyester container with handle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60167331A JPS6143535A (en) | 1985-07-29 | 1985-07-29 | Manufacture of polyester container with handle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6143535A JPS6143535A (en) | 1986-03-03 |
| JPS6210818B2 true JPS6210818B2 (en) | 1987-03-09 |
Family
ID=15847757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60167331A Granted JPS6143535A (en) | 1985-07-29 | 1985-07-29 | Manufacture of polyester container with handle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6143535A (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2890586B2 (en) * | 1990-01-12 | 1999-05-17 | 三菱電機株式会社 | Engine speed control device for internal combustion engine |
| JP3174375B2 (en) * | 1992-01-14 | 2001-06-11 | 株式会社吉野工業所 | Primary molded product of bottle with handle and method of molding bottle with handle |
| US6733716B2 (en) | 2001-05-21 | 2004-05-11 | Sabel Plastechs Inc. | Method of making a stretch/blow molded article (bottle) with an integral projection such as a handle |
| US7153455B2 (en) | 2001-05-21 | 2006-12-26 | Sabel Plastechs Inc. | Method of making a stretch/blow molded article (bottle) with an integral projection such as a handle |
| US6910596B2 (en) * | 2002-02-11 | 2005-06-28 | Harry M. Herckner | Water bottle with handle |
| WO2004085133A1 (en) * | 2003-03-28 | 2004-10-07 | Alpla-Werke Alwin Lehner Gmbh & Co. Kg | Plastic container, especially plastic bottle with integrated deformed portion and method for producing the same |
| JP4791163B2 (en) * | 2005-12-02 | 2011-10-12 | 日精エー・エス・ビー機械株式会社 | Heat-resistant container and heat-resistant container with contents |
| DE102008038781A1 (en) * | 2008-08-05 | 2010-02-11 | Khs Corpoplast Gmbh & Co. Kg | Method and apparatus for blow molding containers |
| ES2378746T3 (en) | 2009-09-04 | 2012-04-17 | The Procter & Gamble Company | Process to produce a blow molded and stretched container that has an integrally molded handle |
| JP5538302B2 (en) * | 2011-05-12 | 2014-07-02 | 日精エー・エス・ビー機械株式会社 | Heat-resistant container, heat-resistant container manufacturing method, and final blow mold |
| ES2424743T3 (en) * | 2011-05-18 | 2013-10-08 | The Procter & Gamble Company | Article with ergonomic integral handle |
| CN103935020A (en) * | 2014-04-06 | 2014-07-23 | 安徽省雅琪力天家居用品有限公司 | Method for manufacturing water-droplet-shaped laundry detergent bottle |
| CN105480541A (en) * | 2015-12-02 | 2016-04-13 | 王高杨 | Plastic container with through hole, and production method thereof |
| CH712555A1 (en) | 2016-06-06 | 2017-12-15 | Alpla Werke Alwin Lehner Gmbh & Co Kg | Stretch-blown plastic container with an integrally formed handle region and production method for the plastic container. |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5232969A (en) * | 1975-09-09 | 1977-03-12 | Ono Sangyo Kk | Blow molding method |
| JPS5574840A (en) * | 1978-12-01 | 1980-06-05 | Yoshino Kogyosho Co Ltd | Biaxial stretch blow moulding for polyethylene terephthalate resin bottle with handle |
-
1985
- 1985-07-29 JP JP60167331A patent/JPS6143535A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5232969A (en) * | 1975-09-09 | 1977-03-12 | Ono Sangyo Kk | Blow molding method |
| JPS5574840A (en) * | 1978-12-01 | 1980-06-05 | Yoshino Kogyosho Co Ltd | Biaxial stretch blow moulding for polyethylene terephthalate resin bottle with handle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6143535A (en) | 1986-03-03 |
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