JPH0516244A - Method for mounting protective member on synthetic resin bottle - Google Patents

Method for mounting protective member on synthetic resin bottle

Info

Publication number
JPH0516244A
JPH0516244A JP3176850A JP17685091A JPH0516244A JP H0516244 A JPH0516244 A JP H0516244A JP 3176850 A JP3176850 A JP 3176850A JP 17685091 A JP17685091 A JP 17685091A JP H0516244 A JPH0516244 A JP H0516244A
Authority
JP
Japan
Prior art keywords
bottle
synthetic resin
uneven
uneven part
protector
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
Application number
JP3176850A
Other languages
Japanese (ja)
Inventor
Koji Niimi
美 宏 二 新
Tsutomu Moriwaki
脇 勉 森
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.)
Mitsui Petrochemical Industries Ltd
Original Assignee
Mitsui Petrochemical Industries 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 Mitsui Petrochemical Industries Ltd filed Critical Mitsui Petrochemical Industries Ltd
Priority to JP3176850A priority Critical patent/JPH0516244A/en
Publication of JPH0516244A publication Critical patent/JPH0516244A/en
Pending legal-status Critical Current

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Buffer Packaging (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)

Abstract

PURPOSE:To effectively put resources to practical use without imparing the quality as a recycle raw material of a synthetic resin bottle by easily and closely bonding a synthetic resin protective member to the bottle by fitting the uneven part of the bottle in the uneven part of the protective member and heating both parts to closely bond them. CONSTITUTION:The caliber of a synthetic resin protective member 4 at a part having an uneven part 12 formed thereto so as to be fitted in the uneven part 11 fumed to a bottle 1 at a predetermained position from the bottom surface thereof is formed so as to become smaller than the max. outer diameter of the region of the uneven part 12 of the bottle 1 by 0.2-5mm. Subsequently, the bottle 1 is slightly stretched outwardly in its diameter direction to make the caliber of the region of the uneven part 12 larger than the max. outer diameter of the region of the uneven part 11 of the bottle 1 by 1mm or less. Next, the uneven part 12 of the protective member 4 is instantaneously heated from the outside to be shrunk to closely bond the protective member 4 to the bottle 1. By this constitution, a rubber type adhesive can be made unnecessary and the quality as a recycle raw material of the bottle is not impaired.

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、炭酸飲料などを入れる
合成樹脂製ボトルの底部を保護する合成樹脂製保護具の
装着方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of mounting a synthetic resin protector for protecting the bottom of a synthetic resin bottle containing a carbonated beverage or the like.

【０００２】[0002]

【従来の技術】炭酸飲料などは、耐圧性の容器に入れら
れて市販されているが、従来から使用されている炭酸飲
料容器としては、ＰＥＴ樹脂（ポリエチレンテレフタレ
ート樹脂）を二軸延伸して成形したＰＥＴボトルが使用
されている。このＰＥＴボトルは、炭酸飲料など封入し
たときの内圧が、５〜６kg/cm2と高く、またその容量も
１．５リットルと大きいので、図２に示すように、独特
の耐圧形状に設計されている。つまり、本体１は全体的
に円筒状をしたものであるが、その底面２は半球形状に
形成されている。2. Description of the Related Art Carbonated beverages are put on the market in a pressure-resistant container and are commercially available. Conventionally used carbonated beverage containers are formed by biaxially stretching PET resin (polyethylene terephthalate resin). PET bottles are used. This PET bottle has a high internal pressure of 5 to 6 kg / cm 2 when it is filled with carbonated drinks, and has a large capacity of 1.5 liters, so it is designed to have a unique pressure-resistant shape as shown in FIG. ing. That is, the main body 1 has a cylindrical shape as a whole, but the bottom surface 2 thereof has a hemispherical shape.

【０００３】ところが、このような形状とすれば、ＰＥ
Ｔボトルを樹脂成形する場合に、底面２の中心にプリフ
ォーム成形時の射出ゲートとなる樹脂配向の少ない未配
向部３ができる。この部分はＰＥＴボトルを落下させた
場合に破壊し易すい。また、このボトルを使用する場合
に、ボトル自体を自立状態に置くことができないという
不具合もある。However, with such a shape, PE
When the T bottle is resin-molded, an unoriented portion 3 having a small resin orientation, which serves as an injection gate at the time of preform molding, is formed at the center of the bottom surface 2. This part is easy to break when the PET bottle is dropped. Moreover, when using this bottle, there is also a problem that the bottle itself cannot be placed in an independent state.

【０００４】したがって、従来から、プリフォーム成形
時ゲートの未配向部３の保護と、ボトルに自立性をもた
せるため、平坦な底面を有するポリエチレン製の保護具
４を本体１の外周に取付けている。この保護具４は、断
面が偏平な略Ｕ字状をしたものであり、この偏平な底面
４ａによりボトル本体１を自立状態とするとともに、外
的衝撃力に対し前記未配向部３を保護しており、前記ボ
トル本体１の下部にゴム系接着剤Ｓにより接着すること
により取付けている。Therefore, conventionally, in order to protect the non-oriented portion 3 of the gate at the time of molding the preform and to make the bottle self-supporting, the polyethylene protector 4 having a flat bottom surface is attached to the outer periphery of the main body 1. .. The protector 4 has a substantially U-shaped cross section, and the flat bottom surface 4a makes the bottle body 1 self-supporting and protects the non-oriented portion 3 against external impact force. It is attached to the lower portion of the bottle body 1 by being adhered by a rubber adhesive S.

【０００５】ここに、保護具４は、ボトル本体１の底面
から５０〜７０ｍｍの範囲を覆うように設けられ、下方
側部に膨出された足部５を有し、この足部５の近傍に
は、本体の球形底面２の外側面２ａと当接する第１荷重
応力緩和部６と、本体の球形底面２の未配向部３の外部
を覆う第２荷重応力緩和部７とが設けられている。ま
た、ボトル本体１には底面から所定位置に凸条８を付形
し、この凸条８と保護具４の凹溝９とが凹凸嵌合し、本
体１と保護具４との嵌合性を高めている。Here, the protector 4 is provided so as to cover a range of 50 to 70 mm from the bottom surface of the bottle body 1, and has a foot portion 5 bulging on the lower side portion, and the vicinity of the foot portion 5 Is provided with a first load stress relaxation portion 6 that abuts the outer surface 2a of the spherical bottom surface 2 of the main body, and a second load stress relaxation portion 7 that covers the outside of the non-oriented portion 3 of the spherical bottom surface 2 of the main body. There is. Further, a convex strip 8 is formed on the bottle main body 1 at a predetermined position from the bottom surface, and the convex strip 8 and the concave groove 9 of the protector 4 are fitted in a concavo-convex manner, so that the fitting property of the main body 1 and the protective gear 4 Is increasing.

【０００６】[0006]

【発明が解決しようとする課題】しかしながら、ボトル
本体１に保護具４をゴム系接着剤Ｓにより接着すると、
用済後にボトル本体１と保護具４とを別体に分離するこ
とが困難となる。このため、ボトル本体１を構成してい
るＰＥＴ樹脂をリサイクルする場合には、種々の問題が
生じる虞れがある。つまり、ＰＥＴ樹脂は、無機質ある
いは有機質からなる異質の成分との相容性が悪いことか
ら、リサイクル原料の成形工程において、結晶化（白
化）速度が著しく速まり、ボトルあるいは繊維、モノフ
ィラメント、結晶バンドなどの延伸性阻害の重大な要因
となる。However, when the protector 4 is bonded to the bottle body 1 with the rubber-based adhesive S,
After use, it becomes difficult to separate the bottle body 1 and the protector 4 separately. Therefore, when recycling the PET resin that constitutes the bottle body 1, various problems may occur. In other words, since PET resin is poorly compatible with foreign or inorganic components, the rate of crystallization (whitening) is significantly increased during the molding process of recycled raw materials, and bottles, fibers, monofilaments, and crystalline bands It becomes a serious factor of hindering stretchability.

【０００７】特に、最近は、環境汚染ならびに環境破壊
の防止が叫ばれ、廃棄物は極力減らし、廃棄されたもの
の中で再利用可能なものがあれば、これを積極的に利用
し、資源の有効利用を図ることが望ましいとされている
状況下において、大量に利用されているＰＥＴ樹脂ボト
ルが、ゴム系接着剤Ｓのために有効利用されなければ、
好ましくないことは明らかである。In particular, recently, there has been a call for prevention of environmental pollution and environmental destruction, the amount of waste is reduced as much as possible, and if any of the discarded items can be reused, they are actively used to save resources. Under circumstances where it is desirable to make effective use, if the PET resin bottles used in large quantities are not effectively used for the rubber-based adhesive S,
Obviously, this is not desirable.

【０００８】[0008]

【発明の目的】本発明は、上述した従来技術が有する課
題を解決するためになされたもので、従来からの保護具
と同等のボトル底面保護性能を有しながら、ＰＥＴ樹脂
等からなるボトルに使用されているゴム系接着剤を廃止
し、ボトルのリサイクル原料としての品質を損なうこと
がないようにし、限りある資源の有効活用を図る点で著
しく貢献できる、合成樹脂製ボトルの保護具装着方法を
提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the above-mentioned prior art, and provides a bottle made of PET resin or the like while having the bottle bottom protection performance equivalent to that of a conventional protector. A method of wearing protective equipment for synthetic resin bottles that can contribute significantly to the effective use of limited resources by eliminating the use of rubber-based adhesives that are used and not impairing the quality of bottles as recycled materials. The purpose is to provide.

【０００９】[0009]

【発明の概要】かかる目的を達成するため、本発明に係
る合成樹脂製ボトルの保護具装着方法は、二軸延伸成形
してなる合成樹脂製ボトルの略半球形状の底部中心部に
おける、二軸配向が不充分な部分の落下衝撃破壊を防止
するために、合成樹脂製ボトルの下部に、クッション構
造の底面を有する合成樹脂製保護具を嵌合させて装着す
る方法において、ボトルの底面から所定位置に付形した
凹凸部に嵌合するように凹凸部が付形される合成樹脂製
保護具の部位の口径を、ボトルの凹凸部の部位の最大外
径より０．２乃至５ｍｍだけ、小さく形成し、この合成
樹脂製保護具の凹凸部が付形された部位を横軸に、即
ち、径方向外方に、僅かに延伸して、この合成樹脂製保
護具の凹凸部の部位の口径を、ボトルの凹凸部の部位の
最大外径より１ｍｍ以内の大きい口径にとどめ、ボトル
の凹凸部に合成樹脂製保護具の凹凸部を嵌合した後、こ
の合成樹脂製保護具の凹凸部を外側から瞬間的に加熱し
て収縮させ、合成樹脂製保護具をボトルに密着させるこ
とを特徴としている。SUMMARY OF THE INVENTION In order to achieve the above object, a method for mounting a synthetic resin bottle protector according to the present invention is a biaxially stretch-molded synthetic resin bottle having a substantially hemispherical bottom center portion with a biaxial. In order to prevent falling impact damage to the part with insufficient orientation, in the method of fitting the synthetic resin protective equipment having the bottom surface of the cushion structure to the lower portion of the synthetic resin bottle and mounting it, The diameter of the part of the synthetic resin protective equipment where the uneven part is shaped so as to fit into the uneven part that is shaped at the position is smaller than the maximum outer diameter of the uneven part of the bottle by 0.2 to 5 mm. The portion of the synthetic resin protector with the uneven portion formed is stretched slightly on the horizontal axis, that is, outward in the radial direction, and the caliber of the uneven portion of the synthetic resin protector is formed. Is 1 mm from the maximum outer diameter of the uneven part of the bottle Keep the inner diameter large, and fit the uneven part of the synthetic resin protector to the uneven part of the bottle, then heat the uneven part of the synthetic resin protector instantaneously from the outside to shrink it. The feature is that the protector is closely attached to the bottle.

【００１０】かかる構成によれば、合成樹脂製ボトル側
の凹凸部と合成樹脂製保護具側の凹凸部とを嵌合させ、
加熱して両者を密着させているため、ゴム系接着剤を使
用することなく、保護具をボトルに容易に密着すること
ができる。したがって、従来からの保護具と同等のボト
ル底面保護性能を有しながら、ＰＥＴ樹脂等からなるボ
トルに使用されているゴム系接着剤を廃止し、ボトルの
リサイクル原料としての品質を損なうことがないように
し、限りある資源の有効活用を図る点で著しく貢献でき
る。According to this structure, the concave-convex portion on the synthetic resin bottle side and the concave-convex portion on the synthetic resin protector side are fitted together,
Since both are heated and brought into close contact with each other, the protector can be easily brought into close contact with the bottle without using a rubber adhesive. Therefore, while having the bottle bottom protection performance equivalent to that of conventional protectors, the rubber-based adhesive used for bottles made of PET resin or the like is abolished, and the quality of the bottle as a recycled material is not impaired. By doing so, it can make a significant contribution to the effective use of limited resources.

【００１１】[0011]

【発明の具体的説明】以下、本発明を図面に示す実施例
に基づき詳細に説明する。図１は本発明の一実施例を示
すもので、合成樹脂ボトルの一部を破断した正面図であ
り、図２に示す部材と同一部材には同一符号を付してい
る。DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in detail below with reference to the embodiments shown in the drawings. FIG. 1 shows an embodiment of the present invention and is a front view in which a part of a synthetic resin bottle is cut away, and the same members as those shown in FIG. 2 are designated by the same reference numerals.

【００１２】本実施例の合成樹脂製ボトル１は、ＰＥＴ
樹脂を二軸延伸成形することにより形成され、ボトル１
の大部分は円筒状であり、このボトル１の底面２は略半
球形状とされているが、このボトルを使用時に自立状態
とするために、本体１の下部外周には、クッション構造
の底面４ａを有する合成樹脂製保護具４が装着されてい
る。The synthetic resin bottle 1 of this embodiment is made of PET.
Bottle 1 is formed by biaxially stretching resin
Is mostly cylindrical, and the bottom surface 2 of the bottle 1 has a substantially hemispherical shape. However, in order to make the bottle self-supporting at the time of use, the bottom surface 4a of the cushion structure is provided on the lower outer periphery of the main body 1. A synthetic resin protector 4 having is attached.

【００１３】本実施例では、保護具４の取付ける場合、
次のような方法で行う。ボトル１の底面から所定位置
（底面から５０乃至７０ｍｍの位置）に付形した凹凸部
１１に嵌合するように凹凸部１２が付形される合成樹脂
製保護具の部位の口径を、ボトル１の凹凸部１２の部位
の最大外径より０．２乃至５ｍｍだけ、小さく形成す
る。これら凹凸部１１，１２は、径が１０ｍｍ以内と
し、膨出高さが２ｍｍ以内とすることが望ましい。ま
た、これらの凹凸部１１，１２に関して、図示例では、
ボトル１側に凸部が形成してあり、保護具４側に凹部が
形成してあるが、逆に、ボトル１側に凹部が形成してあ
り、保護具４側に凸部が形成してあり、また、これらが
混在されていてもよい。In this embodiment, when the protector 4 is attached,
Use the following method. The diameter of the part of the synthetic resin protector in which the uneven portion 12 is shaped so as to fit into the uneven portion 11 shaped at a predetermined position (position of 50 to 70 mm from the bottom surface) from the bottom surface of the bottle 1 is It is formed to be smaller than the maximum outer diameter of the uneven portion 12 by 0.2 to 5 mm. It is desirable that the concavo-convex portions 11 and 12 have a diameter of 10 mm or less and a bulge height of 2 mm or less. Further, regarding these uneven portions 11 and 12, in the illustrated example,
The convex portion is formed on the bottle 1 side and the concave portion is formed on the protective equipment 4 side, but conversely, the concave portion is formed on the bottle 1 side and the convex portion is formed on the protective equipment 4 side. Yes, these may be mixed.

【００１４】次いで、この合成樹脂製保護具４の凹凸部
１２が付形された部位を横軸に、即ち、径方向外方に、
僅かに延伸して、この合成樹脂製保護具４の凹凸部１２
の部位の口径を、ボトル１の凹凸部１１の部位の最大外
径より１ｍｍ以内の大きい口径にとどめる。Next, the portion of the synthetic resin protector 4 on which the concavo-convex portion 12 is formed is plotted along the horizontal axis, that is, radially outward.
It is slightly stretched, and the uneven portion 12 of the synthetic resin protective equipment 4
The diameter of the portion of (1) is limited to a larger diameter within 1 mm than the maximum outer diameter of the portion of the uneven portion 11 of the bottle 1.

【００１５】このようにして別々に形成されたボトル１
と保護具４とを組合わすには、保護具４が固定されてい
るホルダー（図示せず）上にボトル固定のホルダーを機
械的に導入し、ボトル１を保護具４に挿入し、前記凹凸
部１１，１２を凹凸嵌合することにより行なう。Bottles 1 formed separately in this way
In order to combine the protection tool 4 with the protection tool 4, a holder for fixing the bottle is mechanically introduced onto a holder (not shown) to which the protection tool 4 is fixed, the bottle 1 is inserted into the protection tool 4, and This is done by fitting the parts 11 and 12 in a concavo-convex manner.

【００１６】次いで、この合成樹脂製保護具４の凹凸部
１２を外側から瞬間的に加熱して収縮させる。これによ
り、合成樹脂製保護具４をボトル１に密着させる。この
加熱バンドの温度は、１００〜１８０℃、好ましくは１
６０℃である。このようにすれば、ゴム系接着剤を廃止
することができ、ボトルのリサイクル原料としての品質
を損なうことはない。また、凹凸部１２を加熱して合成
樹脂製保護具４をボトル１に密着させているため、ボト
ル１に接触している保護具４の部位が応力緩和の役割を
果たしている。Next, the concave-convex portion 12 of the synthetic resin protector 4 is instantaneously heated from the outside to shrink it. As a result, the synthetic resin protector 4 is brought into close contact with the bottle 1. The temperature of this heating band is 100 to 180 ° C., preferably 1
It is 60 ° C. In this way, the rubber-based adhesive can be eliminated, and the quality of the bottle as a recycled material will not be impaired. In addition, since the uneven portion 12 is heated to bring the synthetic resin protector 4 into close contact with the bottle 1, the portion of the protector 4 in contact with the bottle 1 plays a role of stress relaxation.

【００１７】本発明は、上述した実施例のみに限定され
るものではなく、種々改変することができる。例えば、
凹凸部を付形する個数、大きさ、位置等はボトルの大き
さによって適宜選択することができる。The present invention is not limited to the above-mentioned embodiments, but can be variously modified. For example,
The number, size, position, etc. of shaping the uneven portion can be appropriately selected depending on the size of the bottle.

【００１８】また、ボトル１及び保護具４には、ポリエ
チレンテレフタレート樹脂、ポリエチレンナフタレート
樹脂、共重合ポリエステル樹脂など種々のものが用いら
れる。As the bottle 1 and the protector 4, various materials such as polyethylene terephthalate resin, polyethylene naphthalate resin, and copolyester resin are used.

【００１９】[0019]

【発明の効果】以上説明してきたように、本発明では、
合成樹脂製ボトル側の凹凸部と合成樹脂製保護具側の凹
凸部とを嵌合させ、加熱して両者を密着させているた
め、ゴム系接着剤を使用することなく、保護具をボトル
に容易に密着することができる。したがって、従来から
の保護具と同等のボトル底面保護性能を有しながら、Ｐ
ＥＴ樹脂等からなるボトルに使用されているゴム系接着
剤を廃止し、ボトルのリサイクル原料としての品質を損
なうことがないようにし、限りある資源の有効活用を図
る点で著しく貢献できる。As described above, according to the present invention,
Since the concavo-convex portion on the synthetic resin bottle side and the concavo-convex portion on the synthetic resin protective equipment side are fitted and heated to bring them into close contact, the protective equipment can be attached to the bottle without using a rubber adhesive. Can be adhered easily. Therefore, while having the bottle bottom protection performance equivalent to that of conventional protectors, P
Rubber-based adhesives used in bottles made of ET resin, etc. are abolished so that the quality of bottles as a recycling material is not impaired, and it is possible to make a significant contribution in effectively utilizing limited resources.

【００２０】[0020]

【実施例】別工程で成形された、ボトルの底面と嵌合す
る部分だけを５ｍｍ横軸に拡大延伸し、計算上ボトルの
最大部径より１ｍｍ程度内径が大きな保護具を、ボトル
の底面に装着し、１６０℃に温度をコントロールした割
型加熱バンドで瞬間的に加熱し、保護具の付形された部
分を収縮密着させ、炭酸飲料充填容器としての体裁を整
えた。これにより、ゴム系の接着剤が不要になった。[Examples] Protective equipment, which was molded in a separate process, was enlarged and stretched on the horizontal axis by 5 mm only on the part that fits with the bottom surface of the bottle. It was mounted and instantaneously heated with a split heating band whose temperature was controlled to 160 ° C., and the shaped portion of the protective equipment was contracted and brought into close contact with it to prepare a carbonated beverage filling container. This eliminates the need for a rubber adhesive.

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

【図１】図１は本発明の一実施例を示すもので、合成樹
脂ボトルの一部を破断した正面図である。FIG. 1 shows an embodiment of the present invention and is a front view in which a part of a synthetic resin bottle is cut away.

【図２】図２は従来の製法に係る合成樹脂ボトルの一部
を破断した正面図である。FIG. 2 is a partially cutaway front view of a synthetic resin bottle according to a conventional manufacturing method.

【符号の説明】[Explanation of symbols]

１ 合成樹脂製ボトル ２ 底面 ３ 未配向部 ４ 保護具 １１，１２ 凹凸部 1 Synthetic resin bottle 2 Bottom surface 3 Unoriented portion 4 Protective equipment 11, 12 Concavo-convex portion

───────────────────────────────────────────────────── 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 // Ｂ２９Ｌ 22:00 4Ｆ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location // B29L 22:00 4F

Claims (1)

【特許請求の範囲】 【請求項１】 二軸延伸成形してなる合成樹脂製ボトル
の略半球形状の底部中心部における、二軸配向が不充分
な部分の落下衝撃破壊を防止するために、合成樹脂製ボ
トルの下部に、クッション構造の底面を有する合成樹脂
製保護具を嵌合させて装着する方法において、 ボトルの底面から所定位置に付形した凹凸部に嵌合する
ように凹凸部が付形される合成樹脂製保護具の部位の口
径を、ボトルの凹凸部の部位の最大外径より０．２乃至
５ｍｍだけ、小さく形成し、 この合成樹脂製保護具の凹凸部が付形された部位を横軸
に、即ち、径方向外方に、僅かに延伸して、この合成樹
脂製保護具の凹凸部の部位の口径を、ボトルの凹凸部の
部位の最大外径より１ｍｍ以内の大きい口径にとどめ、 ボトルの凹凸部に合成樹脂製保護具の凹凸部を嵌合した
後、この合成樹脂製保護具の凹凸部を外側から瞬間的に
加熱して収縮させ、合成樹脂製保護具をボトルに密着さ
せることを特徴とする合成樹脂製ボトルの保護具装着方
法。Claim: What is claimed is: 1. In order to prevent a drop impact fracture of a portion where the biaxial orientation is insufficient in the central portion of the substantially hemispherical bottom of a synthetic resin bottle formed by biaxial stretching. In the method of fitting and mounting the synthetic resin protective equipment having the bottom surface of the cushion structure on the lower portion of the synthetic resin bottle, the uneven portion is formed so as to fit to the uneven portion shaped at a predetermined position from the bottom surface of the bottle. The caliber of the part of the synthetic resin protector to be shaped is formed to be 0.2 to 5 mm smaller than the maximum outer diameter of the part of the uneven part of the bottle, and the rugged part of the synthetic resin protector is shaped. The part of the uneven part of this synthetic resin protective equipment is within 1 mm from the maximum outer diameter of the part of the uneven part of the bottle by slightly stretching the part on the horizontal axis, that is, outward in the radial direction. Keep the diameter large and keep synthetic resin on the uneven parts of the bottle. After fitting the uneven portion of the tool, the uneven portion of the synthetic resin protector is instantaneously heated from the outside to shrink, and the synthetic resin protector is brought into close contact with the bottle. How to wear protective equipment.
JP3176850A 1991-07-17 1991-07-17 Method for mounting protective member on synthetic resin bottle Pending JPH0516244A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3176850A JPH0516244A (en) 1991-07-17 1991-07-17 Method for mounting protective member on synthetic resin bottle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3176850A JPH0516244A (en) 1991-07-17 1991-07-17 Method for mounting protective member on synthetic resin bottle

Publications (1)

Publication Number Publication Date
JPH0516244A true JPH0516244A (en) 1993-01-26

Family

ID=16020928

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3176850A Pending JPH0516244A (en) 1991-07-17 1991-07-17 Method for mounting protective member on synthetic resin bottle

Country Status (1)

Country Link
JP (1) JPH0516244A (en)

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