JPH05285944A - Preformed body and heat-resistant bottle - Google Patents

Preformed body and heat-resistant bottle

Info

Publication number
JPH05285944A
JPH05285944A JP11686992A JP11686992A JPH05285944A JP H05285944 A JPH05285944 A JP H05285944A JP 11686992 A JP11686992 A JP 11686992A JP 11686992 A JP11686992 A JP 11686992A JP H05285944 A JPH05285944 A JP H05285944A
Authority
JP
Japan
Prior art keywords
mouth
insert member
heat
section
preformed body
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
JP11686992A
Other languages
Japanese (ja)
Other versions
JP3099993B2 (en
Inventor
Kenichi Morizumi
憲一 森住
Yuuji Kameumi
裕司 亀海
Naoki Hosoi
直樹 細井
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.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing 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 Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP11686992A priority Critical patent/JP3099993B2/en
Publication of JPH05285944A publication Critical patent/JPH05285944A/en
Application granted granted Critical
Publication of JP3099993B2 publication Critical patent/JP3099993B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D1/00Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/02Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
    • B65D1/0223Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
    • B65D1/023Neck construction

Abstract

PURPOSE:To manufacture a preformed body with an insert component not to be separated from a cap section and also with the cap section of good heat resistance. CONSTITUTION:A preformed body 1 is used for forming a heat-resistant bottle by biaxially stretching blow molding and composed of a cap section 11 provided with a support ring section 14, a body section 12 and a bottom section 13. A ring heat-resistant insert component 15 constituting the outer shape of the cap section 11 is disposed integrally on the outer periphery of the cap section 11, and a spiral screw section 15a is formed on the outer face of the insert component 15, while a screw section 15b of spiral shape in the direction reverse to the spiral shape of the screw section 15a is formed at least on a part of the inner face of the insert component.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は口部が耐熱性に優れたボ
トルを製造することができる予備成形体及び耐熱性ボト
ルに関し、特に、口部の外周部に配置された耐熱性材料
からなるインサート部材が口部の内周部に強固に固着さ
れた予備成形体、及びそれから形成される耐熱性ボトル
に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a preform and a heat-resistant bottle capable of producing a bottle having a mouth with excellent heat resistance, and particularly to a heat-resistant material disposed on the outer periphery of the mouth. The present invention relates to a preformed body in which an insert member is firmly fixed to an inner peripheral portion of a mouth, and a heat resistant bottle formed from the preformed body.

【0002】[0002]

【従来の技術】近年、ポリエステル製ボトルに80〜95℃
の液体を充填するいわゆるホットフィルや、炭酸ガス入
りの果汁、乳酸菌飲料等を充填したボトルに対するホッ
トシャワーによるパステライジングが行われるようにな
り、そのため特に口部付近に優れた耐熱性が要求される
ようになった。というのは、ホットフィルでは口部が熱
い液体に最初にさらされ、またホットシャワーによるパ
ステライジングでも、ホットシャワーをボトル上方から
注ぐのが一般的であるからである。
2. Description of the Related Art In recent years, polyester bottles have a temperature of 80 to 95 ° C.
The so-called hot fill for filling the liquid of, the carbonated juice, bottles filled with lactic acid bacteria beverage, etc. will be subjected to pasteurizing by hot shower, so that particularly excellent heat resistance is required near the mouth. It became so. This is because in hot fill, the mouth is first exposed to hot liquid, and in pasteurizing with a hot shower it is common to pour the hot shower from above the bottle.

【0003】ところが、通常の二軸延伸ブロー成形によ
って得られるポリエステル製ボトルでは、口部は未延伸
のまま残されるために延伸による耐熱性の付与ができ
ず、80〜95℃の液体の充填には供し得ない。
However, in a polyester bottle obtained by ordinary biaxially stretch blow molding, the mouth portion is left unstretched, so that heat resistance cannot be imparted by stretching, and it is necessary to fill a liquid at 80 to 95 ° C. Can not serve.

【0004】このような事情により、ポリエステル製ボ
トルの特に口部付近に耐熱性を賦与するために種々の試
みがなされている。たとえば、口部を結晶化させること
により耐熱性を賦与する方法や、口部に耐熱性樹脂を多
く配置するように耐熱性樹脂とポリエステル樹脂等から
なる多層構造の予備成形体とする方法等が試みられてい
る。
Under these circumstances, various attempts have been made to impart heat resistance to polyester bottles, especially near the mouth. For example, a method of imparting heat resistance by crystallizing the mouth portion, a method of forming a preform having a multi-layered structure including a heat resistant resin and a polyester resin so as to dispose a large amount of the heat resistant resin in the mouth portion, and the like are available. Is being tried.

【0005】しかしながら、口部に配置したポリエステ
ル等の樹脂を結晶化させる方法では、口部が白化した
り、口部の機械的強度が低下したりするおそれがある。
一方、予備成形体を多層化して、口部に耐熱性樹脂を多
く配置した予備成形体を用いる方法でも65〜80℃のホッ
トシャワーによるパステライジングを長時間行う場合
や、90℃以上の厳しいホットフィル条件下で連続使用で
きる耐熱性を得ることが難しい。
However, in the method of crystallizing the resin such as polyester disposed in the mouth, the mouth may be whitened or the mechanical strength of the mouth may be reduced.
On the other hand, even with the method of using a preform in which the preform is multi-layered and a large amount of heat resistant resin is placed in the mouth, pasteurizing with a hot shower of 65 to 80 ° C for a long time or a severe hot of 90 ° C or more It is difficult to obtain heat resistance that can be used continuously under fill conditions.

【0006】そこで、あらかじめ良好な耐熱性を有する
樹脂からなる環状のインサート部材を形成しておき、こ
れを予備成形体の口部に配置することにより、ボトルの
口部の耐熱性を向上する方法が検討されてきている。
Therefore, a method for improving the heat resistance of the mouth of the bottle by forming an annular insert member made of a resin having good heat resistance in advance and disposing it in the mouth of the preform. Is being considered.

【0007】[0007]

【発明が解決しようとする課題】しかしながら、耐熱性
に良好な樹脂等からなるインサート部材を口部に配置し
てなる二軸延伸ブロー成形ボトルでは、口部に設けたイ
ンサート部材がポリエステル樹脂からなるボトル本体部
の口部に被着される構造となっているが、一般に耐熱性
樹脂とポリエステル樹脂とは接着性が良好でない場合が
多く、このため耐熱性樹脂からなるインサート部材のボ
トル本体部の口部への固着が良好とはならない。このた
め、インサート部材の離脱を防止することが難しい。
However, in a biaxially stretched blow molded bottle in which an insert member made of a resin having good heat resistance is arranged at the mouth, the insert member provided at the mouth is made of polyester resin. Although it is structured to be attached to the mouth of the bottle body, in general, adhesiveness between heat-resistant resin and polyester resin is often not good, and therefore the bottle body of the insert member made of heat-resistant resin Sticking to the mouth is not good. Therefore, it is difficult to prevent the insert member from coming off.

【0008】したがって本発明の目的は、上記の不都合
を解消し、インサート部材が口部から離脱せず、かつ、
口部が良好な耐熱性を有する予備成形体、及び耐熱性ボ
トルを提供することである。
Therefore, an object of the present invention is to solve the above-mentioned inconvenience, the insert member does not come off from the mouth portion, and
It is an object to provide a preform having a good heat resistance in the mouth and a heat resistant bottle.

【0009】[0009]

【課題を解決するための手段】上記課題を解決するため
に鋭意研究の結果、本発明者は、予備成形体の口部の外
周部に耐熱性材料からなる環状のインサート部材を配置
し、このインサート部材が外面にらせん状のネジ部を設
けるとともに、内面に上記ネジ部と逆のらせん状のネジ
部を設ければ、インサート部材の離脱を防止することが
でき、かつインサート部材の口栓に追随する回転を防止
することができることを発見し、本発明を完成した。
As a result of earnest research for solving the above-mentioned problems, the present inventor has arranged an annular insert member made of a heat-resistant material on the outer peripheral portion of the mouth of the preform, and If the insert member is provided with a spiral screw part on the outer surface and a spiral screw part opposite to the above screw part is provided on the inner surface, the detachment of the insert member can be prevented, and the plug of the insert member can be prevented. The present invention has been completed by discovering that the following rotation can be prevented.

【0010】すなわち、本発明の予備成形体は、サポー
トリング部を有する口部、胴部及び底部からなる予備成
形体であって、前記口部の外周部には、耐熱性材料から
なり、口部の外形を構成する環状のインサート部材が一
体的に設けられており、前記インサート部材は外面にら
せん状のネジ部を有するとともに、内面の少なくとも一
部に前記ネジ部と逆方向のらせん状のネジ部を有するこ
とを特徴とする。
That is, the preformed product of the present invention is a preformed product comprising a mouth portion having a support ring portion, a body portion, and a bottom portion, and the outer peripheral portion of the mouth portion is made of a heat resistant material. An annular insert member that constitutes the outer shape of the part is integrally provided, and the insert member has a spiral screw part on the outer surface, and at least a part of the inner surface has a spiral part in the opposite direction to the screw part. It is characterized by having a screw part.

【0011】また、本発明の耐熱性ボトルは上記予備成
形体を二軸延伸ブロー成形してなることを特徴とする。
The heat-resistant bottle of the present invention is characterized in that the above preform is biaxially stretch blow molded.

【0012】以下本発明を詳細に説明する。まず、本発
明の予備成形体に用いる材料について説明する。本発明
の予備成形体の口部の外周部に配置するインサート部材
を形成する材料としては、耐熱性に優れたものを用い
る。このような耐熱性材料としては、(1)ポリアリレー
トとポリエチレンテレフタレートとのブレンドポリマ
ー、(2) ポリカーボネートとポリエチレンテレフタレー
トとのブレンドポリマー、(3) 熱可塑性ポリエステルと
ポリアリレート、ポリカーボネートとの共重合体、(4)
芳香族ポリカーボネート、(5) メチルメタクリレートと
グルタールイミドとの共重合体、(6) 耐熱性共重合ポリ
エステル、(7) 結晶化ポリエチレンテレフタレート及び
(8) マイカ、ガラス等の無機フィラーのブレンド樹脂等
を単独で又はこれらを組み合わせて使用し得る。
The present invention will be described in detail below. First, the materials used for the preform of the present invention will be described. A material having excellent heat resistance is used as a material for forming the insert member arranged on the outer peripheral portion of the mouth of the preform of the present invention. Such heat-resistant materials include (1) blend polymers of polyarylate and polyethylene terephthalate, (2) blend polymers of polycarbonate and polyethylene terephthalate, (3) copolymers of thermoplastic polyester and polyarylate, polycarbonate ,(Four)
Aromatic polycarbonate, (5) Copolymer of methyl methacrylate and glutarimide, (6) Heat resistant copolyester, (7) Crystallized polyethylene terephthalate and
(8) Blend resins of inorganic fillers such as mica and glass may be used alone or in combination.

【0013】具体的には、UポリマーU8400 、U8450 、
U8500 、U8600(ユニチカ株式会社製) 、J320(三井石油
化学工業株式会社製)、パンライト (帝人株式会社
製)、ケイマックスT-240 、T-150 ( 住友化学ハース株
式会社製)及びサーメックスPCTA6761 (イーストマンコ
ダック株式会社製)等を使用し得る。好ましくはUポリ
マーを使用する。
Specifically, U polymer U8400, U8450,
U8500, U8600 (manufactured by Unitika Ltd.), J320 (manufactured by Mitsui Petrochemical Co., Ltd.), Panlite (manufactured by Teijin Ltd.), Kaymax T-240, T-150 (manufactured by Sumitomo Chemical Haas Co., Ltd.) and THERMEX PCTA6761 (manufactured by Eastman Kodak Co., Ltd.) or the like can be used. U polymers are preferably used.

【0014】本発明の予備成形体の成形体本体部のう
ち、口部の内周部及び口部付近の胴部上部は、ボトルの
口部全体の耐熱性を高める目的で、主として耐熱性樹脂
からなるのが好ましい。具体的には、主として耐熱性樹
脂からなる口部の内周部は、(a) 耐熱樹脂とポリエチレ
ンテレフタレートとを共射出してなる多層構造、(b) ポ
リエチレンテレフタレートを結晶化したもの、あるいは
(c) 耐熱樹脂とポリエチレンテレフタレートとのブレン
ド樹脂等によって構成される。
In the main body of the preform of the present invention, the inner peripheral portion of the mouth and the upper part of the body near the mouth are mainly made of a heat-resistant resin for the purpose of increasing the heat resistance of the entire mouth of the bottle. Preferably consisting of Specifically, the inner peripheral portion of the mouth mainly composed of a heat-resistant resin has (a) a multilayer structure formed by co-injecting a heat-resistant resin and polyethylene terephthalate, (b) a crystallized polyethylene terephthalate, or
(c) Consists of a blended resin of heat-resistant resin and polyethylene terephthalate.

【0015】また、胴部及び底部は、ボトルに一般に使
用されるポリエステル樹脂、好ましくはポリエチレンテ
レフタレートから構成されるが、成形体全体の耐熱性を
高める目的で、部分的に耐熱性樹脂(好ましくは、上記
口部の内周部に用いるのと同様なもの)から構成されて
いてもよく、例えば耐熱性樹脂とポリエチレンテレフタ
レートとを共射出して、上記口部と一体的な多層構造と
してもよい。
The body and the bottom are made of a polyester resin generally used for bottles, preferably polyethylene terephthalate. For the purpose of increasing the heat resistance of the entire molded product, a partially heat resistant resin (preferably a resin) is used. , The same as that used for the inner peripheral portion of the mouth portion), for example, a heat-resistant resin and polyethylene terephthalate may be co-injected to form a multilayer structure integral with the mouth portion. ..

【0016】なお本発明で使用する耐熱性材料中には、
本発明の目的を損なわない範囲で安定剤、顔料、酸化防
止剤、熱劣化防止剤、紫外線劣化防止剤、帯電防止剤、
抗菌剤等の添加剤や、その他の樹脂を適量加えることが
できる。
In the heat resistant material used in the present invention,
Stabilizers, pigments, antioxidants, thermal deterioration inhibitors, ultraviolet deterioration inhibitors, antistatic agents, within the range that does not impair the object of the present invention,
Additives such as antibacterial agents and other resins can be added in appropriate amounts.

【0017】図1は本発明の一実施例による予備成形体
を示す概略断面図である。予備成形体1は口部11と、胴
部12と、底部13とからなり、口部11の外周部は、一体的
に設けられた耐熱性樹脂からなるインサート部材15によ
り形成されている。インサート部材15は、口部の上端付
近からサポートリング14の下端まで延在している。イン
サート部材15が口部の内周部16と接合する面 (以下イン
サート部材15の内面という)17は基本的には円筒状曲面
となっている。
FIG. 1 is a schematic sectional view showing a preform according to an embodiment of the present invention. The preform 1 is composed of a mouth portion 11, a body portion 12 and a bottom portion 13, and the outer peripheral portion of the mouth portion 11 is formed by an insert member 15 made of a heat resistant resin which is integrally provided. The insert member 15 extends from the vicinity of the upper end of the mouth portion to the lower end of the support ring 14. The surface 17 (hereinafter referred to as the inner surface of the insert member 15) where the insert member 15 is joined to the inner peripheral portion 16 of the mouth is basically a cylindrical curved surface.

【0018】インサート部材15は、外面にらせん状のネ
ジ部15a とサポートリング部14とを有するとともに、内
面にネジ部15a と逆方向のらせん状のネジ部15b を有す
る。図2は図1のインサート部材15の部分断面図であ
る。図2に示すように、内面のらせん状のネジ部15b は
外面のらせん状のネジ部15a と逆方向のらせん状に形成
されている。従って、インサート部材15の口部内周部16
からの離脱を防止するとともに、口栓の開閉時における
インサート部材15の口栓に追随する回転を防止すること
ができる。インサート部材15の離脱及び回転の防止を強
化するためには、ネジ部15b を複数段形成することが好
ましい。また、本実施例ではネジ部15b が雄ネジの場合
が示されているが、雌ネジとすることもできる。
The insert member 15 has a spiral screw portion 15a and a support ring portion 14 on the outer surface, and has a spiral screw portion 15b in the opposite direction to the screw portion 15a on the inner surface. FIG. 2 is a partial sectional view of the insert member 15 of FIG. As shown in FIG. 2, the spiral screw portion 15b on the inner surface is formed in a spiral shape in the opposite direction to the spiral screw portion 15a on the outer surface. Therefore, the inner peripheral portion 16 of the mouth of the insert member 15
It is possible to prevent the detachment of the insert member 15 and the rotation of the insert member 15 following the plug when the plug is opened and closed. In order to strengthen the prevention of the detachment and rotation of the insert member 15, it is preferable to form a plurality of screw portions 15b. Further, although the screw portion 15b is shown as a male screw in this embodiment, it may be a female screw.

【0019】図3は、本発明の別の実施例による予備成
形体3の口部付近を示す部分断面図である。この予備成
形体3は、図1に示す予備成形体1と同様に、口部の外
周部には、サポートリング部34を有する環状のインサー
ト部材35が配置されており、インサート部材35は外面に
ネジ部35a を有している。
FIG. 3 is a partial sectional view showing the vicinity of the mouth of the preform 3 according to another embodiment of the present invention. Similar to the preformed body 1 shown in FIG. 1, the preformed body 3 has an annular insert member 35 having a support ring portion 34 arranged on the outer peripheral portion of the mouth, and the insert member 35 is provided on the outer surface. It has a screw portion 35a.

【0020】この実施例では、インサート部材35の内面
の逆方向のらせん状のネジ部は、上方に拡開する複数段
のテーパ面37、38、39からなる。
In this embodiment, the reverse spiral threaded portion of the inner surface of the insert member 35 is composed of a plurality of tapered surfaces 37, 38, 39 which expand upward.

【0021】図4は図3のインサート35の部分断面図で
ある。図4に示すように、複数段37、38、39のテーパ面
からなるネジ部は、外面のらせん状のネジ部35a と逆方
向のらせん状に形成されている。このため、インサート
部材35の口部の内周部36からの離脱を防止するととも
に、口栓の開閉時におけるインサート部材35の口栓に追
随する回転を防止することができる。インサート部材35
の離脱及び回転の防止を強化するために、段数をより多
くすることもできる。
FIG. 4 is a partial cross-sectional view of insert 35 of FIG. As shown in FIG. 4, the screw portion formed of the tapered surface of the plurality of steps 37, 38, 39 is formed in a spiral shape in the opposite direction to the spiral screw portion 35a on the outer surface. For this reason, it is possible to prevent the mouth of the insert member 35 from being separated from the inner peripheral portion 36, and to prevent the insert member 35 from rotating following the mouth plug when the mouth plug is opened and closed. Insert member 35
It is also possible to increase the number of stages in order to strengthen prevention of separation and rotation of the.

【0022】また図4に示すように、インサート部材35
の内面の段全体は、基本的に上方に向かって拡開するよ
うなテーパ面となっている。インサート部材35の内面の
ねじ部をこのような複数段に連なるテーパ面とすること
により、インサート部材35の口部の内周部36の離脱の防
止を強化することができる。
Further, as shown in FIG. 4, the insert member 35
The entire inner surface of the step is basically a tapered surface that expands upward. By making the threaded portion on the inner surface of the insert member 35 into a taper surface that is continuous with such a plurality of steps, it is possible to strengthen the prevention of separation of the inner peripheral portion 36 of the mouth portion of the insert member 35.

【0023】なお、インサート部材と口部の内周部との
密着性をさらに高めるために、インサート部材の内面に
コロナ放電処理を施したり、接着剤を付着したりしても
よい。
Incidentally, in order to further improve the adhesion between the insert member and the inner peripheral portion of the mouth, corona discharge treatment may be applied to the inner surface of the insert member or an adhesive may be attached.

【0024】また、本発明の予備成形体を公知の二軸延
伸ブロー成形することにより耐熱性ボトルを得ることが
できる。
A heat-resistant bottle can be obtained by subjecting the preform of the present invention to known biaxial stretching blow molding.

【0025】[0025]

【発明の効果】以上詳述した通り、本発明の予備成形体
においては、口部の外周部に耐熱性材料からなるインサ
ート部材を配置し、インサート部材が外面にらせん状の
ネジ部を有するとともに、内面に前記ネジ部と逆方向の
らせん状のネジ部を有しているため、インサート部材が
離脱せず、かつ口栓開閉時におけるインサート部材の回
転を防止できる。
As described in detail above, in the preform of the present invention, an insert member made of a heat-resistant material is arranged on the outer peripheral portion of the mouth, and the insert member has a spiral screw portion on the outer surface. Since the inner surface has the spiral threaded portion in the opposite direction to the threaded portion, the insert member does not come off, and the rotation of the insert member at the time of opening / closing the spout can be prevented.

【0026】また、口部の内周部を主として耐熱性樹脂
で形成すれば、予備成形体の口部は主として耐熱性材料
から形成されることとなり、口部の耐熱性が保証され
る。
If the inner peripheral portion of the mouth portion is mainly made of a heat resistant resin, the mouth portion of the preform is mainly made of a heat resistant material, and the heat resistance of the mouth portion is guaranteed.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例による予備成形体を示す概略
断面図である。
FIG. 1 is a schematic sectional view showing a preform according to an embodiment of the present invention.

【図2】図1のインサート部材を示す部分断面図であ
る。
FIG. 2 is a partial cross-sectional view showing the insert member of FIG.

【図3】本発明の別の実施例による予備成形体の口部付
近を示す概略部分断面図である。
FIG. 3 is a schematic partial cross-sectional view showing the vicinity of the mouth of a preform according to another embodiment of the present invention.

【図4】図3のインサート部材を示す部分断面図であ
る。
FIG. 4 is a partial cross-sectional view showing the insert member of FIG.

【符号の説明】[Explanation of symbols]

1・・・予備成形体 11・・・口部 12・・・胴部 13・・・底部 14、34・・・サポートリング部 15、35・・・インサート部材 15a 、15b 、35a ・・・ネジ部 16、36・・・口部の内周部 (成形体本体部) 17・・・インサート部材の内面 37、38、39・・・テーパ面の各段 1 ... Preform 11 ... Mouth 12 ... Body 13 ... Bottom 14, 34 ... Support ring 15, 35 ... Insert 15a, 15b, 35a ... Screw Part 16, 36 ... Inner peripheral part of mouth part (molded body main body) 17 ... Inner surface of insert member 37, 38, 39 ... Each step of tapered surface

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 FI 技術表示箇所 B65D 23/00 B 8111−3E // B29C 45/00 7344−4F B29L 22:00 4F ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification number Office reference number FI technical display location B65D 23/00 B 8111-3E // B29C 45/00 7344-4F B29L 22:00 4F

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 サポートリング部を有する口部、胴部及
び底部からなる予備成形体であって、前記口部の外周部
には、耐熱性材料からなり、口部の外形を構成する環状
のインサート部材が一体的に設けられており、前記イン
サート部材は外面にらせん状のネジ部を有するととも
に、内面の少なくとも一部に前記ネジ部と逆方向のらせ
ん状のネジ部を有することを特徴とする予備成形体。
1. A preformed body comprising a mouth portion having a support ring portion, a body portion, and a bottom portion, wherein the outer peripheral portion of the mouth portion is made of a heat resistant material and has an annular shape that constitutes the outer shape of the mouth portion. An insert member is integrally provided, and the insert member has a spiral threaded portion on an outer surface and has a spiral threaded portion in a direction opposite to the threaded portion on at least a part of an inner surface. Preformed body to be.
【請求項2】 請求項1に記載の予備成形体において、
前記逆方向のらせん状のネジ部が、上方に向かって拡開
する複数段のテーパ面からなることを特徴とする予備成
形体。
2. The preformed body according to claim 1, wherein
The preformed body, wherein the spiral screw portion in the opposite direction is formed of a plurality of tapered surfaces that widen upward.
【請求項3】 請求項1又は2に記載の予備成形体にお
いて、前記口部の内周部が主として耐熱性樹脂からなる
ことを特徴とする予備成形体。
3. The preformed body according to claim 1, wherein the inner peripheral portion of the mouth portion is mainly made of a heat resistant resin.
【請求項4】 請求項1乃至3のいずれかに記載の予備
成形体を二軸延伸ブロー成形してなる耐熱性ボトル。
4. A heat resistant bottle obtained by biaxially stretch blow molding the preform according to any one of claims 1 to 3.
JP11686992A 1992-04-09 1992-04-09 Preforms and heat resistant bottles Expired - Fee Related JP3099993B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11686992A JP3099993B2 (en) 1992-04-09 1992-04-09 Preforms and heat resistant bottles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11686992A JP3099993B2 (en) 1992-04-09 1992-04-09 Preforms and heat resistant bottles

Publications (2)

Publication Number Publication Date
JPH05285944A true JPH05285944A (en) 1993-11-02
JP3099993B2 JP3099993B2 (en) 2000-10-16

Family

ID=14697645

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11686992A Expired - Fee Related JP3099993B2 (en) 1992-04-09 1992-04-09 Preforms and heat resistant bottles

Country Status (1)

Country Link
JP (1) JP3099993B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002347061A (en) * 2001-05-23 2002-12-04 Shin Etsu Polymer Co Ltd Holding vessel and manufacturing method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002347061A (en) * 2001-05-23 2002-12-04 Shin Etsu Polymer Co Ltd Holding vessel and manufacturing method thereof
JP4596681B2 (en) * 2001-05-23 2010-12-08 信越ポリマー株式会社 Storage container and manufacturing method thereof

Also Published As

Publication number Publication date
JP3099993B2 (en) 2000-10-16

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