JP3870651B2 - Blow container - Google Patents
Blow container Download PDFInfo
- Publication number
- JP3870651B2 JP3870651B2 JP2000023094A JP2000023094A JP3870651B2 JP 3870651 B2 JP3870651 B2 JP 3870651B2 JP 2000023094 A JP2000023094 A JP 2000023094A JP 2000023094 A JP2000023094 A JP 2000023094A JP 3870651 B2 JP3870651 B2 JP 3870651B2
- Authority
- JP
- Japan
- Prior art keywords
- container
- blow
- vertical
- vertical protrusions
- label
- 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.)
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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
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/081—Specified dimensions, e.g. values or ranges
- B29C2949/0811—Wall thickness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/081—Specified dimensions, e.g. values or ranges
- B29C2949/082—Diameter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/081—Specified dimensions, e.g. values or ranges
- B29C2949/0829—Height, length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/22—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at neck portion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/24—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at flange portion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/26—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at body portion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/28—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at bottom portion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/30—Preforms or parisons made of several components
- B29C2949/3024—Preforms or parisons made of several components characterised by the number of components or by the manufacturing technique
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/30—Preforms or parisons made of several components
- B29C2949/3032—Preforms or parisons made of several components having components being injected
Landscapes
- Containers Having Bodies Formed In One Piece (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Description
【0001】
【発明の属する技術分野】
本発明は、容器を成形する樹脂量を少なくして、軽量化したブロー容器に関する。
【0002】
【従来の技術】
最近、ゴミの減量化と資源の再利用を推進する目的で、通称、容器包装リサイクル法が施行され、ブロー容器の分野においても、樹脂量の低減化が望まれおり、ポリエステル、ポリプロピレン等の合成樹脂を使用したブロー容器で、同じ容量の容器であっても、使用する樹脂量を減らし、ブロー容器の軽量化が計られている。
【0003】
しかしながら、容器の成形に使用する樹脂量を減らせば、容器の軽量化ができるものの、容器の強度を維持することは難しいものであった。特に、口部にポンプデスペンサー等を取り付け、内容物を吐出した時の減量に伴う減圧変形が生じないことが求められる。
【0004】
これらの欠点を補うため、通常、容器の外面にリブやパネル部を形成して機械的強度を向上させていたが、容器の外観が悪く、また、シュリンクラベルやシルク印刷などの容器装飾に対して、適用上の制限が生じていた。
【0005】
また、軽量化されたブロー容器の外側に、紙製外箱と組合わせて、複合容器として使用していたが、この容器は、使用後の廃棄処理時に、ブロー容器と紙製外箱とを分離し易い構造にしなければならないため、技術的に複雑なものとなっていた。
【0006】
【発明が解決しようとする課題】
本発明の目的は、合成樹脂製ブロー容器単独で使用しても、座屈強度等の強度が維持でき、合成樹脂の使用量を減少させたブロー容器を提供することである。
【0007】
【課題を解決するための手段】
本発明の第1の発明は、容器の満注量(Vml)と、容器の製造の使用樹脂量(Wg)との関係が、W=α×V2/3 で表され、前記αが0.3〜0.4の範囲内にある容器であって、容器の水平断面形状が楕円形で、容器の内面に複数の縦突条部を設け、かつ、前記複数の縦突状部が均一な大きさでなく、左右両側面部の所定箇所に設けられた縦突状部が、他の縦突状部より幅広又は高さが高いことを特徴とするブロー容器である。
【0008】
次に、本発明の第2の発明は、前記複数の縦突条部が少なくともパーティングラインと、このパーティングラインと交差する位置に設けたことを特徴とする第1の発明に記載のブロー容器である。
【0009】
次に、本発明の第3の発明は、前記複数の縦突状部を、母線方向に沿って全周に設けたことを特徴とする第1の発明に記載のブロー容器である。
【0010】
次に、本発明の第4の発明は、前記容器のブロー成形と同時に容器の胴部にラベルを一体化した第1の発明ないし第3の発明に記載のブロー容器である。
【0011】
次に、本発明の第5の発明は、前記ラベルが容器を構成する樹脂と同種の樹脂フィルムで形成された第4の発明に記載のブロー容器である。
【0012】
次に、本発明の第6の発明は、前記ラベルの側端縁に位置する容器の胴部内面に縦突条部を設けたことを特徴とする第4の発明または第5の発明に記載のブロー容器である。
【0013】
そして、第7の発明は、前記容器が延伸ブロー成形法により成形された第1の発明ないし第6の発明に記載のブロー容器である。
【0014】
【発明の実施の形態】
次に、本発明の実施形態のブロー容器について、図を用いて詳細に説明する。
図1は、本発明のそのブロー容器の正面図であり、図2又は図3は、図1に示したA−A線断面図である。複数の縦突状部は、偏平形状のブロー容器の内面に設けられ、図6では、12個の縦突状部が均一形状で30°ピッチの間隔に配置されている。また、縦突状部は、ブロー容器の母線方向に沿い図1に示す容器の肩部6から胴部1そして底部7の中心部へ形成されている。
【0015】
図1に示した容器は、ポリプロピレン、ポリエチレンテレフタレート等の合成樹脂の他、アクリロニトリル、メタクリロニトリルエチレン─酢酸ビニル共重合体ケン化物、芳香族ナイロンを前記合成樹脂に混合したり、前記合成樹脂と組合せ多層化して構成としてもよい。
【0016】
また、図1に示した容器は、容器の満注量(Vml)と、容器の製造の使用樹脂量(Wg)との関係が下記式で表される時に、αが0.3〜0.4の範囲であり、内面に複数の縦突条部5A、5B又は5Cを設けたブロー容器である。
W=α×V2/3
【0017】
本実施形態のブロー容器は、図2又は図3に示すように、容器の左右両側面部の所定位置に設けられた縦突状部5Bの幅又は縦突状部5Cの高さを他の縦突状部5Aよりも大きくしている。これは、通常のブロー容器では、容器の側面部が薄肉となるので、側面部に設けられる縦突状部を他の縦突状部より大きくして容器の側面部を補強し、製造時のライン適性や輸送時の変形を防止するためである。縦突状部の形状は、半円状に限定されるものでなく、台形状や矩形状などでもよく、また、配置位置も任意に設定することができる。
【0018】
なお、本発明のブロー容器を製造する方法としては、ダイレクトブロー成形法又は延伸ブロー成形法があるが、口元部及び胴部を一定の厚みで射出成形したプリフォームを二軸延伸ブロー成形する延伸ブロー成形法が、図1及び図7に示す口元部2及び胴部1の厚みが制御できるので好ましい。
【0019】
また、このプリフォームを成形する時、プリフォーム内面に予め縦突条部を形成しておくことにより、内面の所定位置に縦突条部を設けた容器が製造できる。
【0020】
例えば、図4は、本発明の容器を製造する一実施形態のプリフォームの縦断面図であり、図5又は図6は、そのプリフォームの横断面図である。図5又は図6から明らかなように、プリフォームの内面の所定箇所に複数の縦突条部5A、5B又は5A、5Cを設けることより、図2又は図3に示すような内面の所定位置に縦突条部5A、5B又は5A、5Cを形成するブロー容器が成形される。
【0021】
また、容器の胴部1の表裏には、図7に示すようにブロー成形時、一体成形したラベル3を表裏に貼付してもよい。ラベル3の材質は、容器と同一素材のものを用いる。さらに、容器の胴部1の側面には、図7に示すような凹部4を設けることも可能である。この凹部を設けることにより、容器の強度を向上させる効果がある。
【0022】
また、本発明の容器は、内面に縦突条部を設けただけの構成でもよいが、さらに成形と同時に容器胴部の外側にラベルを成形と同時に一体化する、いわゆるインモールド成形した容器としてもよい。
この時使用するラベルは、容器を構成する樹脂と同様の材質のフィルムを使用することが好ましい。
【0023】
ここで、ラベルを一体化した容器の場合、成形した容器の冷却時の収縮が、ラベルのある部分とラベルのない部分で異なるので、容器のラベルの両側境界付近に相当位置の内面に縦突条部を設けることが好ましい。
このようにラベルの両側境界付近に相当する位置に縦突条部を設けることで、冷却時のボトルの収縮の差により、ラベルの両側部分が、異常に薄くなることを防止することができる。
【0024】
【実施例】
次に、本発明の具体的実施例を以下に詳細に説明する。
【0025】
<実施例1>
ポリプロピレン樹脂を射出成形により図4及び図5に示す内面に縦突状部5Aと縦突状部5Bとを有する形状のプリフォームを作製し、これを二軸延伸ブロー成形して図1及び図2に示す内面に縦突状部5Aと縦突状部5Bとを有する実施例1の偏平ブロー容器を作製した。このときのプリフォームは、重量が28g、外径がφ30mm、全高が100mm、肉厚が4.1mmであり、内面の縦突状部は、本数が12本で、容器の左右両側面部に設ける縦突状部は、幅が4mm、高さが1mmであり、その他の縦突状部は、幅が2mm、高さが1mmであった。また、作製した偏平ブロー容器は、入れ目容量が640ml、幅が84mm、厚みが63mm、全高が190mmであった。
【0026】
<実施例2>
ポリプロピレン樹脂を射出成形により図4及び図6に示す内面に縦突状部5Aと縦突状部5Cとを有する形状のプリフォームを作製し、これを二軸延伸ブロー成形して図1及び図3に示す内面に縦突状部5Aと縦突状部5Cとを有する実施例5の偏平ブロー容器を作製した。このときのプリフォームは、重量が28g、外径がφ30mm、全高が100mm、肉厚が4.2mmであり、内面の縦突状部は、本数が12本で、容器の左右両側面部に設ける縦突状部は、幅が2mm、高さが1.5mmであり、その他の縦突状部は、幅が2mm、高さが1mmであった。また、作製した偏平ブロー容器は、入れ目容量が640ml、幅が84mm、厚みが63mm、全高が190mmであった。
【0027】
<比較例1>
プリフォームの内面に縦突状部がなく、プリフォームの肉厚が4.5mm以外は、実施例1と同様にして比較例1の偏平ブロー容器を作製した。
【0028】
作製した上述の実施例1、実施例2、及び比較例1の3種類のブロー容器について、容器強度を比較評価するため、下記の方法により落下強度、減圧強度、座屈強度及び側面の押圧強度を測定した。その容器強度評価結果を表1に示す。
【0029】
なお、落下強度の評価方法は、容器に水を640ml充填してキャップをし、5℃の環境下に24時間保存したのち、この容器を1.2mの高さから底部を下にして、コンクリート床上に10回落下させて、容器に生じる破損(クラック)の有無を確認した。減圧強度は、容器内に常温の水を充填し、容器内を5mmHgずつ減圧してゆき、容器が変形(反転)したときの減圧度を測定した。座屈強度は、圧縮試験機を使用して容器上部から圧縮速度20mm/minで容器を圧縮し、降伏点(容器のどこかが潰れた点)の荷重を側定した。押圧強度は、圧縮試験機を使用して容器側面を圧縮速度20mm/minで圧縮し、5mm変形させるまでの最大荷重を測定した。
【0030】
【表1】
【0031】
表1に示すように、内面に縦突状部を設けた実施例1及び実施例2のブロー容器は、内面に縦突状部を設けていない比較例1のブロー容器に比べて、減圧強度、座屈強度及び押圧強度において優れていた。また、容器の左右両側面部の縦突状部の幅又は高さを、他の縦突状部と変えることで強度の向上が認められた。なお、落下強度については、いずれの容器にも破損が認められなかった。
【0032】
【発明の効果】
本発明のブロー容器によれば、合成樹脂製ブロー容器単独で使用しても座屈強度等の強度が維持できる、合成樹脂の使用量を減少させたブロー容器およびその製造方法を提供することができる。
【0033】
また、縦突状部が容器内面に設けられているため、外観の見栄えが良好であり、容器デザインの自由度が大きい。さらに、容器外面にリブやパネル部を有しないため、従来からのシュリンクラベルやシルク印刷などによる装飾手段を適用可能である。
【図面の簡単な説明】
【図1】 本発明の他の一実施形態のブロー容器の正面図である。
【図2】 図1に示したブロー容器の一実施形態のA−A線断面図である。
【図3】 図1に示したブロー容器の他の一実施形態のA−A線断面図である。
【図4】 本発明のブロー容器を製造する一実施形態のプリフォームの縦断面図である。
【図5】 図4に示したプリフォームの一実施形態の横断面図である。
【図6】 図4に示したプリフォームの他の一実施形態の横断面図である。
【図7】 本発明の一実施形態のブロー容器を示す正面図である。
【符号の説明】
1……胴部
2……口元部
3……ラベル
4……凹部
5A,5B,5C……縦突条部
6……肩部
7……底部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a blow container that is reduced in weight by reducing the amount of resin forming the container.
[0002]
[Prior art]
In recent years, the Container Packaging Recycling Law has been enforced for the purpose of promoting the reduction of waste and the reuse of resources. In the field of blow containers, it is desired to reduce the amount of resin. Synthesis of polyester, polypropylene, etc. Even in the case of a blow container using a resin having the same capacity, the amount of resin to be used is reduced to reduce the weight of the blow container.
[0003]
However, if the amount of resin used for forming the container is reduced, the weight of the container can be reduced, but it is difficult to maintain the strength of the container. In particular, a pump dispenser or the like is attached to the mouth, and it is required that no decompression deformation occurs due to the weight reduction when the contents are discharged.
[0004]
In order to compensate for these drawbacks, ribs and panels were usually formed on the outer surface of the container to improve the mechanical strength. However, the appearance of the container was poor, and it was not suitable for container decorations such as shrink labels and silk printing. Application restrictions.
[0005]
In addition, it was used as a composite container in combination with a paper outer box on the outside of a lighter blow container, but this container is used to dispose of a blow container and a paper outer box at the time of disposal after use. Since the structure must be easy to separate, it is technically complicated.
[0006]
[Problems to be solved by the invention]
An object of the present invention, be used in the synthetic resin blow molded container alone, buckling such as strength can be maintained, and is to provide a blow container having a reduced amount of the synthetic resin.
[0007]
[Means for Solving the Problems]
In the first aspect of the present invention, the relationship between the full volume of the container (Vml) and the amount of resin used (Wg) in the manufacture of the container is expressed as W = α × V 2/3 , where α is 0 .3 to 0.4, the container has an elliptical horizontal cross-sectional shape, a plurality of vertical protrusions provided on the inner surface of the container, and the plurality of vertical protrusions are uniform. The blow container is characterized in that the vertical protrusions provided at predetermined positions on both the left and right side surfaces are not wider than each other, but are wider or higher than the other vertical protrusions .
[0008]
Next, according to a second aspect of the present invention, there is provided the blow according to the first aspect, wherein the plurality of vertical protrusions are provided at least at a parting line and at a position intersecting with the parting line. Container.
[0009]
Next, a third aspect of the present invention is the blow container according to the first aspect, wherein the plurality of vertical protrusions are provided on the entire circumference along the generatrix direction.
[00 10 ]
Next, a fourth invention of the present invention is the blow container according to the first to third inventions, in which a label is integrated with the body of the container simultaneously with the blow molding of the container.
[00 11 ]
Next, 5th invention of this invention is a blow container as described in 4th invention in which the said label was formed with the same kind of resin film as resin which comprises a container.
[00 12 ]
Next, a sixth invention of the present invention is the fourth invention or the fifth invention, characterized in that a vertical protrusion is provided on the inner surface of the body portion of the container located at the side edge of the label. This is a blow container.
[00 13 ]
A seventh invention is the blow container according to the first invention to the sixth invention, in which the container is formed by a stretch blow molding method.
[00 14 ]
DETAILED DESCRIPTION OF THE INVENTION
Next, the blown container implementation form of the present invention will be described in detail with reference to FIG.
Figure 1 is a front view of the blow molded container of the present invention, FIG. 2 or FIG. 3 is a sectional view taken along line A-A shown in FIG. The plurality of vertical protrusions are provided on the inner surface of the flat blow container. In FIG. 6, twelve vertical protrusions have a uniform shape and are arranged at intervals of 30 °. Further, the vertical protruding portion is formed from the shoulder portion 6 of the container shown in FIG. 1 to the
[00 15 ]
In addition to synthetic resins such as polypropylene and polyethylene terephthalate, the container shown in FIG. 1 is a mixture of saponified acrylonitrile, methacrylonitrile ethylene-vinyl acetate copolymer, and aromatic nylon. It may be configured by combining multiple layers.
[00 16 ]
Further, in the container shown in FIG. 1, when the relationship between the full volume of the container (Vml) and the amount of resin used for manufacturing the container (Wg) is expressed by the following formula, α is 0.3 to 0.00. 4 is a blow container having a plurality of
W = α × V 2/3
[00 17 ]
As shown in FIG. 2 or FIG. 3 , the blow container of the present embodiment has a width of the
[00 18 ]
In addition, as a method for producing the blow container of the present invention, there is a direct blow molding method or a stretch blow molding method, but a stretch in which a preform in which a mouth portion and a body portion are injection-molded with a certain thickness is biaxially stretch blow molded. The blow molding method is preferable because the thickness of the
[00 19 ]
Moreover, when forming this preform, a container having a vertical ridge portion provided at a predetermined position on the inner surface can be manufactured by previously forming a vertical ridge portion on the inner surface of the preform.
[00 20 ]
For example, FIG. 4 is a longitudinal sectional view of a preform of an embodiment for producing the container of the present invention, and FIG. 5 or FIG. 6 is a transverse sectional view of the preform. As is clear from FIG. 5 or FIG. 6 , by providing a plurality of
[00 21 ]
Moreover, you may affix the
[00 22 ]
In addition, the container of the present invention may have a configuration in which a vertical ridge is provided on the inner surface, but as a so-called in-molded container that further integrates a label on the outside of the container body at the same time as molding. Also good.
The label used at this time is preferably a film made of the same material as the resin constituting the container.
[00 23 ]
Here, in the case of a container with an integrated label, the shrinkage when the molded container is cooled differs between the part with the label and the part without the label. It is preferable to provide a strip.
As described above, by providing the vertical protrusions at positions corresponding to the vicinity of both side boundaries of the label, it is possible to prevent the side portions of the label from becoming abnormally thin due to the difference in shrinkage of the bottle during cooling.
[00 24 ]
【Example】
Next, specific examples of the present invention will be described in detail below.
[00 25 ]
<Example 1 >
Polypropylene resin to prepare a preform shape having a
[00 26 ]
<Example 2 >
Polypropylene resin to prepare a preform shape having a
[00 27 ]
<Comparative Example 1 >
A flat blow container of Comparative Example 1 was produced in the same manner as in Example 1 except that there was no vertical protrusion on the inner surface of the preform and the thickness of the preform was 4.5 mm.
[00 28 ]
In order to compare and evaluate the container strength of the three types of blow containers of Example 1 , Example 2 , and Comparative Example 1 produced above, the drop strength, the reduced pressure strength, the buckling strength, and the side pressure strength were measured by the following methods. Was measured. The container strength evaluation results are shown in Table 1.
[00 29 ]
The drop strength was evaluated by filling the container with 640 ml of water, capping it, and storing it in an environment of 5 ° C. for 24 hours. The sample was dropped 10 times on the floor, and the presence or absence of breakage (crack) occurring in the container was confirmed. The reduced pressure strength was measured by measuring the degree of vacuum when the container was deformed (inverted) by filling the container with water at room temperature and reducing the pressure in the container by 5 mmHg. The buckling strength was determined by compressing the container at a compression speed of 20 mm / min from the upper part of the container using a compression tester, and determining the load at the yield point (a point where some part of the container was crushed). The pressing strength was measured by measuring the maximum load until the container side surface was compressed at a compression speed of 20 mm / min using a compression tester and deformed by 5 mm.
[00 30 ]
[Table 1 ]
[00 31 ]
As shown in Table 1 , the blow containers of Example 1 and Example 2 in which the vertical protrusions are provided on the inner surface have a reduced pressure strength compared to the blow container of Comparative Example 1 in which the vertical protrusions are not provided on the inner surface. It was excellent in buckling strength and pressing strength. Moreover, the improvement of intensity | strength was recognized by changing the width | variety or height of the vertical protrusion part of the right-and-left both side surface part of a container with another vertical protrusion part. Regarding the drop strength, no damage was observed in any of the containers.
[00 32 ]
【The invention's effect】
According to the blow container of the present invention, it is possible to provide a blow container having a reduced amount of synthetic resin and a method for producing the same, which can maintain the strength such as buckling strength even when used alone. it can.
[00 33 ]
Moreover, since the vertical protrusion is provided on the inner surface of the container, the appearance is good and the degree of freedom in designing the container is great. Furthermore, since there are no ribs or panel portions on the outer surface of the container, conventional decoration means such as shrink labeling or silk printing can be applied.
[Brief description of the drawings]
FIG. 1 is a front view of a blow container according to another embodiment of the present invention.
2 is an A-A line cross-sectional view of one embodiment of a blow container shown in FIG.
3 is an A-A line cross-sectional view of another embodiment of a blow container shown in FIG.
FIG. 4 is a longitudinal sectional view of a preform according to an embodiment for producing the blow container of the present invention.
5 is a cross-sectional view of one embodiment of a preform shown in FIG.
6 is a cross-sectional view of another embodiment of a preform shown in FIG.
FIG. 7 is a front view showing a blow container according to an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2000023094A JP3870651B2 (en) | 1999-08-24 | 2000-01-31 | Blow container |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11-237471 | 1999-08-24 | ||
JP23747199 | 1999-08-24 | ||
JP2000023094A JP3870651B2 (en) | 1999-08-24 | 2000-01-31 | Blow container |
Publications (2)
Publication Number | Publication Date |
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JP2001130524A JP2001130524A (en) | 2001-05-15 |
JP3870651B2 true JP3870651B2 (en) | 2007-01-24 |
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JP2000023094A Expired - Fee Related JP3870651B2 (en) | 1999-08-24 | 2000-01-31 | Blow container |
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Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20020008092A (en) * | 2001-11-06 | 2002-01-29 | 김홍열 | Manufacture process of heatproof pet bottle and preform manufactured therewith and heatproof pet bottle |
JP3992989B2 (en) * | 2002-01-31 | 2007-10-17 | 株式会社吉野工業所 | Thin-walled blow bottle |
JP4556206B2 (en) * | 2004-05-31 | 2010-10-06 | 株式会社吉野工業所 | Liquid storage products |
US7982616B2 (en) * | 2008-02-14 | 2011-07-19 | 3M Innovative Properties Company | Radio frequency identification (RFID) tag including a three-dimensional loop antenna |
JP7154042B2 (en) * | 2018-05-31 | 2022-10-17 | 株式会社吉野工業所 | squeeze bottle |
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2000
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