JPH0542945A - Bottle with base cup and manufacture thereof - Google Patents
Bottle with base cup and manufacture thereofInfo
- Publication number
- JPH0542945A JPH0542945A JP3224646A JP22464691A JPH0542945A JP H0542945 A JPH0542945 A JP H0542945A JP 3224646 A JP3224646 A JP 3224646A JP 22464691 A JP22464691 A JP 22464691A JP H0542945 A JPH0542945 A JP H0542945A
- Authority
- JP
- Japan
- Prior art keywords
- bottle
- base cup
- protrusion
- main body
- base
- 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.)
- Pending
Links
Classifications
-
- 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
- B65D23/001—Supporting means fixed to the container
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
- B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
- B29C66/545—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles one hollow-preform being placed inside the other
- B29C66/5452—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles one hollow-preform being placed inside the other joining hollow bottoms to bottom of 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
- B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- 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
- B29L2031/7158—Bottles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はベースカップ付プラスチ
ック製ボトル及びその製造方法に関し、さらに詳しく
は、接着剤を使用せずにベースカップを強固に装着した
ボトル、及びそのようなボトルを製造する方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic bottle with a base cup and a method for producing the same, and more particularly, to a bottle in which a base cup is firmly attached without using an adhesive, and such a bottle. Regarding the method.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】ポリエ
チレンテレフタレートにより代表される飽和ポリエステ
ル樹脂等からなる二軸延伸ブロー成形ボトルは、極めて
優れた透明性及び表面光沢を有し、美麗で、ガスバリヤ
ー性、水分不透過性、耐内容物性および保存性等に優れ
ている。また、可塑剤や安定剤等の添加物において有毒
ガスを発生せず、燃焼時の発熱も少なく、炉をいためる
こともないため易廃棄性である等、多くの利点を有して
いる。そのため、各種飲料水、調味料、酒類その他の食
品用の容器（ボトル）等に広く用いられている。BACKGROUND OF THE INVENTION Biaxially stretched blow-molded bottles made of saturated polyester resin represented by polyethylene terephthalate have excellent transparency and surface gloss, and are beautiful and have a gas barrier. Excellent in water resistance, water impermeability, content resistance and storage stability. Further, additives such as plasticizers and stabilizers do not generate toxic gas, generate little heat during combustion, and do not damage the furnace. Therefore, it is widely used in various drinking water, seasonings, containers (bottles) for foods such as alcoholic beverages, and the like.
【０００３】このような二軸延伸ブロー成形ボトルの中
に、底部にいわゆるベースカップを装着したものがあ
る。ベースカップはボトルに自立性を付与するために、
また場合によっては底部を補強するために装着するが、
これは、たとえば内容物が炭酸飲料等の高い内圧を有す
るボトルによく利用される。というのは、このようなボ
トルにおいては、耐内圧性を向上するためにボトル底部
を丸みを帯びる凸面状に成形するのが一般的であるから
である。Among such biaxially stretch blow-molded bottles, there is one in which a so-called base cup is attached to the bottom. The base cup adds self-reliance to the bottle,
Also, in some cases it is installed to reinforce the bottom part,
This is often used, for example, for bottles whose contents have a high internal pressure, such as carbonated drinks. This is because, in such a bottle, it is common to mold the bottom of the bottle into a rounded convex shape in order to improve the internal pressure resistance.
【０００４】従来のベースカップ付ボトルにおいては、
ポリエチレン、ポリプロピレン等の樹脂を用いて、射出
成形、真空成形、圧空成形等の方法で予め成形したベー
スカップを、二軸延伸ブロー成形したボトル本体部にホ
ットメルト接着剤等により固着していた。In the conventional bottle with a base cup,
A base cup previously molded using a resin such as polyethylene or polypropylene by a method such as injection molding, vacuum molding, or pressure molding is fixed to a bottle main body that has been biaxially stretch blow molded with a hot melt adhesive or the like.
【０００５】しかしながら、接着剤を用いてベースカッ
プをボトル本体部に固着するのは、接着剤の取り扱い等
煩雑な工程を含むので、製造上改善の余地が残る。However, fixing the base cup to the main body of the bottle using an adhesive involves complicated steps such as handling of the adhesive, and there is room for improvement in manufacturing.
【０００６】そこで、超音波等でスポット溶接すること
によりベースカップをボトル本体部に固着することが考
えられるが、単にベースカップをボトル本体部の底部に
被せてスポット溶接するのでは、ボトル又はベースカッ
プに穴が開いたり、外観が不良となることが多い。Therefore, it is conceivable to fix the base cup to the bottle body by spot welding with ultrasonic waves or the like. However, if the base cup is simply put on the bottom of the bottle body and spot welded, the bottle or the base is not welded. Cups often have holes or have a poor appearance.
【０００７】したがって、本発明の目的は、接着剤の使
用なしに良好な強度をもってベースカップがボトル本体
部に装着されたボトル、及びそのようなボトルの製造方
法を提供することである。Accordingly, it is an object of the present invention to provide a bottle having a base cup mounted on the bottle body with good strength without the use of an adhesive, and a method of manufacturing such a bottle.
【０００８】[0008]
【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、ベースカップのボトル
本体部側の面又はボトル本体部の底部外面に予め小さな
突起部を設けておき、ボトル本体部にベースカップを被
せた後に超音波を与えてこの突起部を溶融させることで
ベースカップをボトル本体部に固着すれば、ボトル又は
ベースカップに穴が開くようなことはなく強固にベース
カップを装着することができ、またボトルの外観も良好
となることを発見し、本発明を完成した。As a result of earnest research to solve the above-mentioned problems, the present inventor found that a small protrusion is previously provided on the surface of the base cup on the bottle main body side or the outer surface of the bottom of the bottle main body. If the base cup is placed on the bottle body and the base cup is fixed to the bottle body by applying ultrasonic waves to melt the protrusions, the bottle or base cup will not be punctured and will be strong. It was discovered that a base cup could be attached to the bottle and the appearance of the bottle would be good, and the present invention was completed.
【０００９】すなわち、ベースカップを装着した本発明
のプラスチック製ボトルは、前記ベースカップの底部内
面又はボトル本体部の底部外面のいずれか一方が平坦
で、他方には突起部が形成されており、両者は前記突起
部において超音波溶接されていることを特徴とする。That is, in the plastic bottle of the present invention equipped with the base cup, either the inner surface of the bottom portion of the base cup or the outer surface of the bottom portion of the bottle body is flat, and the other is provided with a protrusion. Both are characterized in that they are ultrasonically welded to each other at the protrusion.
【００１０】また、本発明のベースカップ付ボトルの製
造方法は、前記ベースカップの底部内面又はボトル本体
部の底部外面に突起部を形成し、前記ベースカップを前
記突起部で当接するように前記ボトル本体部の底部に装
着し、超音波により前記突起部を溶融させることにより
前記ベースカップを前記ボトル本体部に固着することを
特徴とする。Further, in the method for producing a bottle with a base cup of the present invention, a protrusion is formed on the inner surface of the bottom of the base cup or the outer surface of the bottom of the bottle body, and the base cup is brought into contact with the protrusion. It is characterized in that the base cup is fixed to the bottle main body by mounting the base cup on the bottom of the bottle main body and melting the projection by ultrasonic waves.
【００１１】[0011]
【実施例】以下本発明を詳細に説明する。まず本発明の
方法について説明する。図１は本発明の方法に用いるボ
トル本体部の一例を示す断面図である。The present invention will be described in detail below. First, the method of the present invention will be described. FIG. 1 is a sectional view showing an example of a bottle body used in the method of the present invention.
【００１２】本実施例においては、ボトル本体部２は、
サポートリング２１を有する口部２２と、肩部２３と、
円筒状の胴部２４と、ほぼ凸曲面状の底部２５とからな
るが、口部、肩部、胴部については、従来のプラスチッ
ク製ボトルにみられるような形状に適宜変更してよい。
本実施例では、ボトル本体部の底部２５の中央部２６は
実質的に平面となっており、この平面状の中央部２６の
外表面には環状の突起部２７が形成されている。この突
起部２７の高さは小さくてよく、この部分（平面状の中
央部２６）におけるボトル壁の厚さ程度又はそれ以下と
してよい。なお、胴部２４と底部２５との境界部分には
周方向の突条部２９が形成されており、この部分は後述
するベースカップ３の上端部が当接する部分となる。In this embodiment, the bottle body 2 is
A mouth portion 22 having a support ring 21, a shoulder portion 23,
Although it is composed of a cylindrical body portion 24 and a bottom portion 25 having a substantially convex curved surface, the mouth portion, the shoulder portion, and the body portion may be appropriately modified to have the shapes found in conventional plastic bottles.
In this embodiment, the central portion 26 of the bottom portion 25 of the bottle body is substantially flat, and an annular projection 27 is formed on the outer surface of the flat central portion 26. The height of the protrusion 27 may be small, and may be about the thickness of the bottle wall at this portion (planar central portion 26) or less. A circumferential ridge portion 29 is formed at a boundary portion between the body portion 24 and the bottom portion 25, and this portion is a portion to which an upper end portion of the base cup 3 described later abuts.
【００１３】このような形状のボトル本体部２は、通常
の二軸延伸ブロー成形法により製造することができる。The bottle body 2 having such a shape can be manufactured by a usual biaxial stretch blow molding method.
【００１４】なお、ボトル本体部２を形成する樹脂とし
ては、ポリエステル樹脂が好適である。ポリエステル樹
脂としては、飽和ジカルボン酸と飽和二価アルコールと
からなる熱可塑性樹脂が使用できる。飽和ジカルボン酸
としては、テレフタル酸、イソフタル酸、フタル酸、ナ
フタレン-1,4- 又は2,6-ジカルボン酸、ジフェニルエー
テル-4,4′- ジカルボン酸、ジフェニルジカルボン酸
類、ジフェノキシエタンジエタンジカルボン酸類等の芳
香族ジカルボン酸類、アジピン酸、セバチン酸、アゼラ
イン酸、デカン-1,10-ジカルボン酸等の脂肪族ジカルボ
ン酸、シクロヘキサンジカルボン酸等の脂環族ジカルボ
ン酸等を使用することができる。また飽和二価アルコー
ルとしては、エチレングリコール、プロピレングリコー
ル、トリメチレングリコール、テトラメチレングリコー
ル、ジエチレングリコール、ポリエチレングリコール、
ポリプロピレングリコール、ポリテトラメチレングリコ
ール、ヘキサメチレングリコール、ドデカメチレングリ
コール、ネオペンチルグリコール等の脂肪族グリコール
類、シクロヘキサンジメタノール等の脂環族グリコー
ル、2,2-ビス(4′- β- ヒドロキシエトキシフェニル）
プロパン、その他の芳香族ジオール類等を使用すること
ができる。好ましいポリエステルは、テレフタル酸とエ
チレングリコールとからなるポリエチレンテレフタレー
トである。A polyester resin is suitable as the resin forming the bottle body 2. As the polyester resin, a thermoplastic resin composed of saturated dicarboxylic acid and saturated dihydric alcohol can be used. Saturated dicarboxylic acids include terephthalic acid, isophthalic acid, phthalic acid, naphthalene-1,4- or 2,6-dicarboxylic acid, diphenyl ether-4,4'-dicarboxylic acid, diphenyldicarboxylic acids, diphenoxyethanediethanedicarboxylic acids And the like, aliphatic dicarboxylic acids such as adipic acid, sebacic acid, azelaic acid, decane-1,10-dicarboxylic acid and the like, alicyclic dicarboxylic acids such as cyclohexanedicarboxylic acid and the like can be used. As the saturated dihydric alcohol, ethylene glycol, propylene glycol, trimethylene glycol, tetramethylene glycol, diethylene glycol, polyethylene glycol,
Aliphatic glycols such as polypropylene glycol, polytetramethylene glycol, hexamethylene glycol, dodecamethylene glycol, neopentyl glycol, alicyclic glycols such as cyclohexanedimethanol, 2,2-bis (4'-β-hydroxyethoxyphenyl) )
Propane and other aromatic diols can be used. A preferred polyester is polyethylene terephthalate consisting of terephthalic acid and ethylene glycol.
【００１５】ポリエスル樹脂は、固有粘度が 0.5〜1.5
、好ましくは0.55〜0.8 の範囲の値を有する。またこ
のようなポリエステルは、溶融重合で製造され、 180〜
250 ℃の温度下で減圧処理または不活性ガス雰囲気で熱
処理されたもの、または固相重合して低分子量重合物で
あるオリゴマーやアセトアルデヒドの含有量を低減させ
たものが好適である。Polyester resin has an intrinsic viscosity of 0.5 to 1.5.
, Preferably having a value in the range 0.55 to 0.8. In addition, such polyester is produced by melt polymerization,
Those that have been subjected to reduced pressure treatment or heat treatment in an inert gas atmosphere at a temperature of 250 ° C., or those that have reduced the content of oligomers and acetaldehyde which are low molecular weight polymers by solid-phase polymerization are suitable.
【００１６】なおポリエステル樹脂中には、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 polyester resin, additives such as stabilizers, pigments, antioxidants, heat deterioration inhibitors, UV deterioration inhibitors, antistatic agents, antibacterial agents, etc., and the like are included in the polyester resin within the range not impairing the object of the present invention. An appropriate amount of resin can be added.
【００１７】一方、ベースカップ３は、図２に示すよう
にほぼ円筒状の側面部３１と底部３２とからなる。本実
施例のベースカップ３においては、底部３２の周辺部
に、下方に凸状の接地部３３を形成している。また、こ
の環状の接地部３３の内側の底部はいわば上げ底状にな
っているが、そのうちで接地部３３に近い周辺部分は比
較的底の高い環状の台部３４を形成しており、その内側
に、台部３４より幾分低い平面状の底部中央部３５が形
成されている。On the other hand, the base cup 3 comprises a substantially cylindrical side surface portion 31 and a bottom portion 32 as shown in FIG. In the base cup 3 of this embodiment, a downwardly projecting grounding portion 33 is formed around the bottom portion 32. Further, the inner bottom portion of the annular grounding portion 33 is, so to speak, a raised bottom shape, of which the peripheral portion near the grounding portion 33 forms an annular base portion 34 having a relatively high bottom. In addition, a flat bottom central portion 35 that is somewhat lower than the base portion 34 is formed.
【００１８】台部３４の上面は、上述したボトル本体部
２の底部中央部２６の周囲部分と当接する部位となるの
で、ボトル本体部２の底部の当接する部分の曲率にあう
ように、中心方向に傾斜した上面を有する。また平面状
の底部中央部３５は、後述するようにボトル本体部２と
の固着部位となり、ボトル本体部２の底部中央部２６と
対向する部位となる。Since the upper surface of the base portion 34 comes into contact with the peripheral portion of the bottom central portion 26 of the bottle main body 2 described above, the center of the upper portion of the base 34 is adjusted so as to match the curvature of the contact portion of the bottom of the bottle main body 2. It has an upper surface inclined in the direction. Further, the flat bottom central portion 35 serves as a fixing portion to the bottle main body portion 2 as described later and is a portion facing the bottom central portion 26 of the bottle main body portion 2.
【００１９】ベースカップ３は、例えばポリエチレン、
ポリエステル等の樹脂を用い、公知の射出成形、真空成
形、圧空成形等により製造することができる。The base cup 3 is made of polyethylene, for example.
It can be manufactured by a known injection molding, vacuum molding, pressure molding or the like using a resin such as polyester.
【００２０】本発明の好ましい態様においては、このベ
ースカップ３をボトル本体部２と同一（又は同種）の樹
脂により形成する。ボトル本体部２を二軸延伸ブロー成
形法により形成する場合には、これを形成する樹脂とし
てポリエチレンテレフタレート等のポリエステル樹脂を
用いるのが一般的であるが、そのような場合には、ベー
スカップ３もポリエチレンテレフタレート等のポリエス
テル樹脂で形成するのがよい。このようにボトル本体部
とベースカップとを同種の樹脂（好ましくは同一樹脂）
で形成すると、使用済のボトルのリサイクルにおいて、
ベースカップをボトル本体部から離脱させる工程を必要
とせず、リサイクルがとても容易になる。In a preferred embodiment of the present invention, the base cup 3 is made of the same (or the same kind) resin as the bottle body 2. When the bottle body 2 is formed by the biaxial stretch blow molding method, a polyester resin such as polyethylene terephthalate is generally used as a resin forming the bottle body 2. In such a case, the base cup 3 is used. Also, it is preferable to use a polyester resin such as polyethylene terephthalate. In this way, the bottle body and the base cup are made of the same resin (preferably the same resin).
When formed with, in the recycling of used bottles,
Recycling is very easy because there is no need to remove the base cup from the bottle body.
【００２１】上述したベースカップ３及びボトル本体部
２をそれぞれ準備したら、ベースカップ３をボトル本体
部２の底部３２の下方から装着する。このとき、図３に
示すように、ベースカップ３の側面部３１の上端面はボ
トル本体部２の周方向の突条部２９に当接しない。さら
に、ベースカップ３の底部に設けた環状の台部３４はボ
トル本体部２の底部中央部２６の周囲部分２８に実質的
に接する。After preparing the base cup 3 and the bottle main body 2 described above, the base cup 3 is mounted from below the bottom portion 32 of the bottle main body 2. At this time, as shown in FIG. 3, the upper end surface of the side surface portion 31 of the base cup 3 does not come into contact with the circumferential ridge portion 29 of the bottle body portion 2. Further, the annular base portion 34 provided on the bottom portion of the base cup 3 substantially contacts the peripheral portion 28 of the bottom central portion 26 of the bottle body portion 2.
【００２２】ボトル本体部２の底部中央部２６はベース
カップ３の底部中央部３５と対向するが、ボトル本体部
２の底部中央部２６に設けた突起部２７がベースカップ
３の底部中央部３５の表面に当接する。The bottom center portion 26 of the bottle body 2 faces the bottom center portion 35 of the base cup 3, but the protrusion 27 provided on the bottom center portion 26 of the bottle body 2 has a bottom center portion 35 of the base cup 3. Abut the surface of.
【００２３】このようにベースカップ３をボトル本体部
２に装着したら、次に、図４に示すように、超音波ホー
ン４をベースカップ３の下方に設置し、超音波を発信す
る。適当なエネルギーを有する超音波を与えると、小さ
な突起部２７は容易に溶融する。溶融した樹脂は接着剤
の役目をし、この部分でベースカップ３がボトル本体部
２に固着される。なお、ホーン４としては、突起部２７
の形状に対応するようにリング状のフラットホーンを用
いるのがよい。このとき、突起部２７がホーン４の平ら
なリング状の端面４０の領域内に入るような大きさのホ
ーンとするのがよい。After the base cup 3 is mounted on the bottle body 2 in this manner, the ultrasonic horn 4 is installed below the base cup 3 to emit ultrasonic waves, as shown in FIG. The small protrusions 27 are easily melted when an ultrasonic wave having an appropriate energy is applied. The melted resin functions as an adhesive, and the base cup 3 is fixed to the bottle body 2 at this portion. As the horn 4, the protrusion 27
It is preferable to use a ring-shaped flat horn so as to correspond to the above shape. At this time, it is preferable to make the horn of such a size that the protrusion 27 is located within the area of the flat ring-shaped end face 40 of the horn 4.
【００２４】なお、超音波を与えるときに、ベースカッ
プ３を下方から押し上げるように力を加えておけば、ベ
ースカップ３はしっかりとボトル本体部２に固着され、
図５に示すようなベースカップ付ボトル１が得られる。
ここで、ボトル本体部２の底部中央部２６とベースカッ
プ３の底部中央部３５は実質的に接し、その両方の面間
に突起部２７が溶融してなるごく薄い樹脂接着部４０が
形成される。When ultrasonic waves are applied, if a force is applied to push up the base cup 3 from below, the base cup 3 is firmly fixed to the bottle body 2,
The bottle 1 with a base cup as shown in FIG. 5 is obtained.
Here, the bottom central portion 26 of the bottle body 2 and the bottom central portion 35 of the base cup 3 are substantially in contact with each other, and a very thin resin adhesive portion 40 formed by melting the protrusion 27 is formed between both surfaces thereof. It
【００２５】以上、本発明を添付図面を参照して説明し
たが、本発明はこれに限定されず、本発明の思想を逸脱
しないかぎり、種々の変更を施すことができる。たとえ
ば、超音波により溶融して固着部となる突起部はボトル
本体部に形成しておく必要はなく、ベースカップ側に形
成しておいてもよい。また、先に示した実施例において
は、この突起部を環状としていたが、突起部は所望の線
状の突起部としてよい。また必ずしも突起部を線状とす
る必要はなく、スポット溶接に適用できるような突起状
としてよい。Although the present invention has been described above with reference to the accompanying drawings, the present invention is not limited to this, and various modifications can be made without departing from the concept of the present invention. For example, it is not necessary to form the protrusion that is melted by ultrasonic waves and becomes the fixing portion on the bottle main body, and may be formed on the base cup side. Further, in the above-described embodiment, the protrusion is annular, but the protrusion may be a desired linear protrusion. Further, the protrusion does not necessarily have to be linear, and may be a protrusion applicable to spot welding.
【００２６】[0026]
【発明の効果】以上詳述した通り、本発明の方法によれ
ば、ベースカップを接着剤なしで強固にボトル本体部に
装着することができる。また、ベースカップとボトル本
体部とを同種の樹脂より形成しておけば、使用後のボト
ルのリサイクルが非常に容易となる。というのは、本発
明では、従来のホットメルト接着剤のような、ボトル本
体部を形成する樹脂と異なる樹脂を用いてはおらず、リ
サイクル時に異種樹脂が混入することがないからであ
る。As described in detail above, according to the method of the present invention, the base cup can be firmly attached to the bottle body without using an adhesive. Further, if the base cup and the bottle body are made of the same kind of resin, it becomes very easy to recycle the bottle after use. This is because the present invention does not use a resin different from the resin forming the bottle body, such as a conventional hot melt adhesive, and does not mix different resins during recycling.
【００２７】本発明ではまた、ボトル本体部又はベース
カップにあらかじめ小さな突起部を形成しておき、その
突起部分を超音波により溶融し、それによりベースカッ
プとボトル本体部とを固着するので、ボトル本体部やベ
ースカップに穴が開いたり、固着部分の外観が悪くなっ
たりすることはない。Also, in the present invention, a small protrusion is formed in advance on the bottle body or the base cup, and the protrusion is melted by ultrasonic waves, and the base cup and the bottle body are fixed to each other by the ultrasonic wave. There is no hole in the main body or base cup, and the appearance of the fixed part does not deteriorate.
【００２８】本発明のボトルは、炭酸飲料をはじめとす
る各種飲食品等のボトルに好適である。The bottle of the present invention is suitable for bottles of various drinks and foods including carbonated drinks.
【図１】本発明の方法に用いることができるボトル本体
部の一例を示す断面図である。FIG. 1 is a cross-sectional view showing an example of a bottle body that can be used in the method of the present invention.
【図２】本発明の方法に用いることができるベースカッ
プの一例を示す断面図である。FIG. 2 is a cross-sectional view showing an example of a base cup that can be used in the method of the present invention.
【図３】ベースカップをボトル本体部の底部に装着した
状態の一例を示す部分断面図である。FIG. 3 is a partial cross-sectional view showing an example of a state in which the base cup is attached to the bottom of the bottle body.
【図４】ベースカップをボトル本体部に固着する操作に
おいて、超音波ホーンを配置した状態を示す部分断面図
である。FIG. 4 is a partial cross-sectional view showing a state in which an ultrasonic horn is arranged in the operation of fixing the base cup to the bottle body.
【図５】本発明の一実施例によるベースカップ付ボトル
を示す断面図である。FIG. 5 is a sectional view showing a bottle with a base cup according to an embodiment of the present invention.
１ ベースカップ付ボトル ２ ボトル本体部 ３ ベースカップ ４ 超音波ホーン ２２ 口部 ２３ 肩部 ２４ 胴部 ２５ 底部 ２６ ボトル本体部の底部中央部 ２７ 突起部 ３１ ベースカップ側面部 ３２ ベースカップ底部 ３３ 接地部 ３４ 台部 ３５ ベースカップの底部中央部 1 Bottle with Base Cup 2 Bottle Body 3 Base Cup 4 Ultrasonic Horn 22 Mouth 23 Shoulder 24 Body 25 Bottom 26 Bottle Center Bottom Bottom 27 Protrusion 31 Base Cup Side 32 Base Cup Bottom 33 Grounding Part 34 stand 35 central bottom of base cup
Claims (3)
トルにおいて、前記ベースカップの底部内面又はボトル
本体部の底部外面のいずれか一方が平坦で、他方には突
起部が形成されており、両者は前記突起部において超音
波溶接されていることを特徴とするベースカップ付ボト
ル。1. A plastic bottle equipped with a base cup, wherein either the inner surface of the bottom of the base cup or the outer surface of the bottom of the bottle body is flat, and the other is formed with a protrusion, both of which are A bottle with a base cup characterized in that the protrusion is ultrasonically welded.
おいて、前記ボトル本体部及び前記ベースカップがポリ
エステル樹脂からなることを特徴とするベースカップ付
ボトル。2. The bottle with a base cup according to claim 1, wherein the bottle body and the base cup are made of polyester resin.
トルを製造する方法において、前記ベースカップの底部
内面又はボトル本体部の底部外面に突起部を形成し、前
記ベースカップを前記突起部で当接するように前記ボト
ル本体部の底部に装着し、超音波により前記突起部を溶
融させることにより前記ベースカップを前記ボトル本体
部に固着することを特徴とするベースカップ付ボトルの
製造方法。3. A method of manufacturing a plastic bottle with a base cup attached, wherein a protrusion is formed on the inner surface of the bottom of the base cup or the outer surface of the bottom of the bottle body, and the base cup is brought into contact with the protrusion. A method for manufacturing a bottle with a base cup, which is characterized in that the base cup is fixed to the bottle main body by attaching the base cup to the bottom of the bottle main body and melting the protrusion by ultrasonic waves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3224646A JPH0542945A (en) | 1991-08-09 | 1991-08-09 | Bottle with base cup and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3224646A JPH0542945A (en) | 1991-08-09 | 1991-08-09 | Bottle with base cup and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0542945A true JPH0542945A (en) | 1993-02-23 |
Family
ID=16816984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3224646A Pending JPH0542945A (en) | 1991-08-09 | 1991-08-09 | Bottle with base cup and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0542945A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003181930A (en) * | 2001-12-18 | 2003-07-03 | Suzuka Fuji Xerox Co Ltd | Composite resin molded article and method for recycling the same |
| CN102941673A (en) * | 2012-11-08 | 2013-02-27 | 凡嘉科技（无锡）有限公司 | Ultrasonic welding jig of T25 cell culture bottle |
-
1991
- 1991-08-09 JP JP3224646A patent/JPH0542945A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003181930A (en) * | 2001-12-18 | 2003-07-03 | Suzuka Fuji Xerox Co Ltd | Composite resin molded article and method for recycling the same |
| CN102941673A (en) * | 2012-11-08 | 2013-02-27 | 凡嘉科技（无锡）有限公司 | Ultrasonic welding jig of T25 cell culture bottle |
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