JP5950176B2 - Synthetic resin housing - Google Patents

Synthetic resin housing Download PDF

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JP5950176B2
JP5950176B2 JP2011166824A JP2011166824A JP5950176B2 JP 5950176 B2 JP5950176 B2 JP 5950176B2 JP 2011166824 A JP2011166824 A JP 2011166824A JP 2011166824 A JP2011166824 A JP 2011166824A JP 5950176 B2 JP5950176 B2 JP 5950176B2
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inclined panel
peripheral wall
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浩通 斉藤
浩通 斉藤
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Yoshino Kogyosho Co Ltd
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Description

本発明は合成樹脂製壜体に関するものであり、水を主成分とした内容液を凍結させて使用する用途向けの合成樹脂製壜体に関する。
The present invention relates to a synthetic resin casing, and more particularly to a synthetic resin casing for use in which a content liquid containing water as a main component is frozen.

従来、殺菌を必要とするたとえば果汁飲料やお茶等、ポリエチレンテレフタレート(以下、PETと記す。)樹脂製の壜体(ペットボトル)等の合成樹脂製壜体への充填方法として、所謂、高温充填と呼ばれる方法があるが、90℃前後の温度で内容液を壜体に充填し、キャップをして密封後、冷却するものであり、冷却後には壜体内がかなりの減圧状態となる。   Conventionally, so-called high temperature filling has been used as a filling method for synthetic resin casings such as polyethylene terephthalate (hereinafter referred to as PET) resin casings (pet bottles) that require sterilization, such as fruit juices and tea. However, the casing is filled with the content liquid at a temperature of about 90 ° C., sealed with a cap, and then cooled. After cooling, the casing is considerably decompressed.

このため、上記のような高温充填を伴う用途については、胴部に減圧吸収パネルを形成し、減圧に伴う壜体の減容変形を、壜体がいびつに変形した感じを与えることなく、目立たないように吸収(緩和)する機能、所謂、減圧吸収機能を発揮するようにした耐熱ボトルが用いられている。
たとえば、特許文献1には胴部に中心軸に対して軸対称に、6ケの縦長の減圧吸収パネルを凹状に陥没形成した丸形壜体に係る発明が記載されている。
Therefore, for applications involving high temperature filling as described above, a vacuum absorption panel is formed in the body, and the volume reduction deformation of the casing accompanying decompression is conspicuous without giving the feeling that the casing has been deformed. A heat-resistant bottle that exhibits a function of absorbing (relaxing) such as so-called reduced pressure absorption is used.
For example, Patent Document 1 describes an invention related to a round casing in which six vertically long vacuum absorption panels are recessed and formed in an axisymmetric manner with respect to a central axis.

一方、この種の壜体は、夏季に冷凍庫で水を主成分とした内容液を凍結させた状態のものを徐々に解かしながら飲用に供する等の用途にも使用されている。
On the other hand, this type of housing is also used for use in drinking while gradually thawing a liquid in which the content liquid mainly composed of water is frozen in a freezer in summer.

特開2003−63516号公報JP 2003-63516 A

ここで、図6、7は6ケの縦長の減圧吸収パネル111を凹状に陥没形成した丸形壜体の従来例を示すもので、図6は全体正面図、図7は図6中のD−D線に沿って示す平断面図であり、この壜体101は口筒部102、テーパー筒状の肩部103、円筒状の胴部104、底部105を有するペットボトルある。
胴部104の略全高さ範囲に亘って縦長の6ケの減圧吸収パネル111が並列状に陥没形成されており、また胴部104の上端と下端には周溝107が配設されており、胴部104はシュリンクフィルム21で外装されている。
Here, FIGS. 6 and 7 show a conventional example of a round casing in which six vertically long vacuum absorbing panels 111 are formed in a concave shape, FIG. 6 is an overall front view, and FIG. 7 is a diagram D in FIG. It is a plane sectional view shown along line -D, and this casing 101 is a plastic bottle having a mouth tube portion 102, a tapered tube-shaped shoulder portion 103, a cylindrical body portion 104, and a bottom portion 105.
Six vertically long vacuum absorption panels 111 are formed in a parallel manner over the entire range of the body portion 104, and circumferential grooves 107 are provided at the upper and lower ends of the body portion 104. The body portion 104 is covered with a shrink film 21.

このような壜体101に水を主成分とした内容液を充填して凍結すると、内容液の体積が略1.09倍となるが、図6、7に示した壜体101のように、減圧吸収パネル111のような凹状部分を形成しておけば、図7中、二点鎖線で表した凹状部分の膨出状の変形により凍結に伴う体積増加を吸収することができる。
しかし、凹状部分の膨出により壜体が歪な形状になり美観が大きく損なわれる等の問題がある。
When such a casing 101 is filled with a content liquid containing water as a main component and frozen, the volume of the content liquid becomes approximately 1.09 times, like the casing 101 shown in FIGS. If a concave portion such as the reduced pressure absorption panel 111 is formed, an increase in volume due to freezing can be absorbed by the bulging deformation of the concave portion represented by a two-dot chain line in FIG.
However, there is a problem that the bulge of the concave portion causes the housing to be distorted and the aesthetic appearance is greatly impaired.

そして、この種の壜体は図6に示したように商品名等の表示あるいは意匠の観点から胴部104を印刷したシュリンクフィルム21で外装した状態で製品化されているが、上記のような凍結に伴う胴部104の膨出変形に伴ってシュリンクフィルム21が伸び変形し、シュリンクラベル21に表記したバーコードを読み取れなくなったり、表示した成分表、使用説明、注意書き等が読み取れなくなってしまい店頭では商品価値のない壜体製品となってしまう恐れがある。   And this kind of housing is commercialized in a state where the body portion 104 is externally covered with the printed shrink film 21 from the viewpoint of display of the product name or the design or design as shown in FIG. The shrink film 21 expands and deforms along with the bulging deformation of the body portion 104 due to freezing, and the barcode printed on the shrink label 21 cannot be read, or the displayed component table, instructions for use, precautions, etc. cannot be read. There is a risk that it will become a box product with no commercial value at the store.

さらに膨出変形が大きくなる場合には、壜体製品の使用後にシュリンクラベル21を分別回収するため、多くの場合、シュリンクラベル21に壜体の軸方向に沿ってミシン目を入れているので、このミシン目に沿った破断が発生する恐れがある。また、破断まで至らなくとも、胴部104の減圧時における減容変形、あるいは内容液の凍結時における膨出変形によりシュリンクラベル21に皺やズレが発生し、いずれにしても美観が大きく損なわれてしまう恐れもある。   If the bulging deformation further increases, the shrink label 21 is separated and collected after the use of the casing product. In many cases, the perforation is made in the shrink label 21 along the axial direction of the casing. There is a risk of breakage along the perforation. Even if the rupture does not occur, the shrinkage deformation at the time of decompression of the body portion 104 or the bulging deformation at the time of freezing of the content liquid causes wrinkles and misalignment in the shrink label 21. There is also a risk.

本発明は、合成樹脂製壜体における上記したような問題点を解消すべく創案されたものであり、全体としては丸形壜体としての外観を保持しつつ、減圧吸収機能、および内容液の凍結時における体積の増加を、外観を損なうことなく十分吸収する機能(以下、体積増加吸収機能とする。)が十分に発揮されると共に、特に内容液の凍結時の壜体の膨張に伴う外装したシュリンクフィルムの伸び変形によりバーコード等の表示機能が損なわれることなく壜体製品として商品性が高度に保持することが可能な壜体形状を創出することを課題とするものである。
The present invention was devised to solve the above-mentioned problems in the synthetic resin casing, and while maintaining the appearance as a round casing as a whole, the vacuum absorption function, and the content liquid A function that sufficiently absorbs the increase in volume during freezing without damaging the appearance (hereinafter referred to as volume increase absorption function) is fully exhibited, and in particular, an exterior that accompanies expansion of the casing when the content liquid is frozen. It is an object of the present invention to create a casing shape that can maintain a high level of merchantability as a casing product without impairing the display function of a barcode or the like due to the stretch deformation of the shrink film.

上記技術的課題を解決する手段の内、本発明の主たる構成は、
水を主成分とした内容液を凍結させて使用する用途向けの口筒部、筒状の胴部、そして底部を有する合成樹脂製壜体において、
胴部上半部と下半部とを有し
一方周壁を円筒状とした円筒状領域を備え
他方壜体の中心軸に対して一定方向に傾斜した4ケあるいは5ケの傾斜パネルを並列状にして周壁の平断面形状を角部を円弧状に角取りした正四角形状あるいは正五角形状とした傾斜パネル領域を備え
傾斜パネル領域の周壁が上端及び下端から中央高さ位置に向けて緩やかに縮径する構成とする、
と云うものである。
Among the means for solving the above technical problems, the main configuration of the present invention is as follows.
In a synthetic resin housing having a mouth tube portion, a cylindrical body portion, and a bottom portion for use in which a content liquid containing water as a main component is frozen.
Body portion and a upper half and a lower half,
One is provided with a cylindrical area in which the peripheral wall and cylindrical,
The other is a regular quadrangular or regular pentagonal shape in which four or five inclined panels inclined in a fixed direction with respect to the central axis of the housing are arranged in parallel, and the flat cross-sectional shape of the peripheral wall is rounded at the corners in an arc shape. an inclined panel regions and,
The peripheral wall of the inclined panel region is configured to gradually reduce the diameter from the upper end and the lower end toward the center height position.
It is said.

上記した構成は、胴部上半部と下半部とを有し
一方円筒状領域を備えてシュリンクラベルの外装による表示や装飾機能を十分にかつ明確に発揮させる領域をなし、他方傾斜パネル領域を備えて減圧吸収機能と内容液の凍結時における体積増加吸収機能を十分に発揮させる領域をなし、それぞれの領域で機能を分担させようとしたものである。
Configuration described above, body portion and a upper half and a lower half,
One forms the region to sufficiently and clearly demonstrate the appearance and decorative function by exterior shrink label comprises a cylindrical region, volume increase absorption during freeze vacuum absorption functions and content liquid other is an inclined panel area There is an area where the functions are fully exhibited , and each area is intended to share functions.

円筒状領域では減圧時にも、内容液の凍結時にも周壁の平断面形状は変形することなく円形で一定の形状が保持されるため、外装されるシュリンクフィルムには、皺やズレの発生がないので、装飾的な美観を十分に発揮させることは勿論、
凍結時にも周壁の膨張はなく、シュリンクフィルムが伸び変形することもないのでバーコード等の表示機能を、損なうことなく明確に発揮させることができる。
In the cylindrical region, the flat cross-sectional shape of the peripheral wall is maintained in a circular and constant shape without deformation even during decompression or freezing of the content liquid. So, of course, to fully demonstrate the decorative beauty,
Even when frozen, there is no expansion of the peripheral wall, and the shrink film does not stretch and deform, so that the display function of a bar code or the like can be clearly exhibited without loss.

また、4ケあるいは5ケの傾斜パネルを並列状にした傾斜パネル領域の平断面形状は角部を円弧状に角取りした正四角形状あるいは五角形状であるが、壜体の軸線に対して一定方向に傾斜して4ケあるいは5ケの傾斜パネルが配設されるため、円筒状部と四角筒状部あるいは五角筒状部を継ぎ足したような違和感を与えることなく、肩部や底部も含めて全体として丸形壜体としての外観を現出させることができる。
Although a 4 Ke or 5 Quai flat cross-sectional shape of the inclined panel area where the inclined panels in parallel form the square shape and the corners were chamfered in a circular arc shape or a positive pentagonal shape, with respect to the axis of the bottle Since four or five inclined panels are inclined in a certain direction, the shoulders and the bottom part are also provided without giving a sense of incongruity that the cylindrical part and the square cylindrical part or the pentagonal cylindrical part are added. Including the whole, the appearance as a round frame can be revealed.

そして、減圧時には傾斜パネル領域で、各傾斜パネルが陥没状に変形し、さらに周壁が捻れ変形すると共に縮径変形するため、この陥没状の変形と縮径変形により減圧吸収機能が十分に発揮される。
一方、内容液が凍結する際には傾斜パネル領域の周壁は、その平断面形状の周長を一定に保持しながら角部を円弧状に角取りした正四角形状あるいは五角形状から円形状に変形し、平断面の面積が増加し、体積増加吸収機能が発揮される。
When the pressure is reduced, each inclined panel is deformed into a depressed shape in the inclined panel region, and the peripheral wall is twisted and deformed to reduce the diameter, so that the reduced pressure absorption function is sufficiently exhibited by the depressed shape and the reduced diameter deformation. The
On the other hand, the peripheral wall of the inclined panel area when the content liquid is frozen, a circular shape from the rectangular-up in a circular arc corner portion while maintaining the circumferential length constant cross-sectional shape was a square shape or a positive pentagonal Deformation increases the area of the flat cross section, and exhibits the function of increasing volume absorption.

ここで、胴部の任意の高さにおける平断面積Saとこの平断面の周長と同じ長さの周長を有する真円の面積Scの比(Sc/Sa)であるRs値を指標とすることにより、胴部の周壁の変形によりどの程度の体積増加吸収機能が発揮されるかを予測することができる。
すなわち、このRs値は平断面形状が真円形であれば1であり、たとえばRs値が1.2であれば真円形に変形させることにより面積が1.2倍になることが予測され、この値を目安にしてどの程度、内容液の凍結による体積増加分を吸収できるかを予測することができ、
内容液の充填時のヘッドスペースによる吸収機能も考慮しながら、前述した凍結時の内容液の体積増加、1.09倍を吸収できるように、Rs値を目安に胴部全体の断面形状を設計することが可能となる。
Here, the Rs value which is the ratio (Sc / Sa) of the area Sc of the perfect circle having the same length as the circumference of the plane section Sa and the circumference of the plane section at an arbitrary height of the trunk is used as an index. By doing so, it is possible to predict how much the volume increase absorption function is exhibited by the deformation of the peripheral wall of the trunk portion.
That is, this Rs value is 1 if the plane cross-sectional shape is a perfect circle, and for example, if the Rs value is 1.2, it is predicted that the area will be increased by a factor of 1.2 by transforming to a true circle. You can predict how much the volume increase due to freezing of the content liquid can be absorbed using the value as a guide,
The cross-sectional shape of the entire body is designed based on the Rs value so that the volume increase of the content liquid at the time of freezing, 1.09 times, can be absorbed while considering the absorption function by the head space when filling the content liquid. It becomes possible to do.

正多角形についてRs値を算出すると、正3角形は1.62、正4角形は1.27、正5角形は1.16、正6角形は1.08、正8角形は1.05である。
勿論、実際の壜体では、その断面形状や周壁の肉厚の分布の影響により、自由な変形が制約されるので、上記の幾何学的に算出された値から予測されるよりも体積増加吸収機能を低く見積もる必要があるし、外観状の美観という点からどの程度まで膨出変形が許容されるのかを考慮する必要もある。
When the Rs value is calculated for a regular polygon, the regular triangle is 1.62, the regular tetragon is 1.27, the regular pentagon is 1.16, the regular hexagon is 1.08, and the regular octagon is 1.05. is there.
Of course, in an actual housing, free deformation is restricted due to the influence of the cross-sectional shape and the wall thickness distribution, so that the volume increase absorption is larger than expected from the above geometrically calculated values. It is necessary to underestimate the function and to what extent bulging deformation is allowed in view of the appearance appearance.

そして、本発明の上記主たる構成についてみると、円筒状領域のRs値は1で体積増加吸収機能を発揮させることができないが、
傾斜パネル領域を4ケあるいは5ケの傾斜パネルを並列状に配設して周壁を形成し、その平断面形状を正四角形状あるいは正五角形状とすることにより、Rs値を上記したように1.27あるいは1.16と十分大きくすることができ、円筒状領域を除く限られた領域、さらには変形に係る制約を考慮しても、内容液を凍結した場合の1.09倍と云う体積増加に対して、十分に体積増加吸収機能を発揮させることができる。
And as for the main configuration of the present invention, the Rs value of the cylindrical region is 1 and the volume increase absorption function cannot be exhibited.
By arranging four or five inclined panels in parallel in the inclined panel region to form a peripheral wall, and making the plane cross-sectional shape a regular square or a regular pentagon, the Rs value is 1 as described above. .27 or 1.16 can be made sufficiently large, and the volume is 1.09 times that when the content liquid is frozen even in consideration of a limited area excluding the cylindrical area, and even restrictions on deformation. with increasing, it is possible to sufficiently exhibit the body volume increase absorption function.

なお、円筒状領域と傾斜パネル領域の配設位置や、高さ幅についてはシュリンクラベルによる外装領域、必要とされる減圧吸収機能と体積増加吸収機能、さらには壜体としての全体的な外観デザイン性等を考慮して適宜選択することができる。
また上記構成で、上半部と下半部は、上下それぞれ1/2の領域を指すものではなく、単に上下に分割した上部と下部を指すものである。
In addition, the layout area of the cylindrical area and the inclined panel area, the height width, the exterior area by the shrink label, the required vacuum absorption function and the volume increase absorption function, and the overall appearance design as a housing It can be appropriately selected in consideration of the properties and the like.
Further, in the above configuration, the upper half and the lower half do not indicate the upper and lower regions, but simply indicate the upper and lower parts divided vertically.

正四角形や正五角形以外の正多角形状の平断面形状についてみると、たとえば平断面形状を正八角形とした場合のRs値は1.05、正6角形とした場合のRs値は1.08と1.09に比較して小さく、円筒状領域を十分な高さ範囲で配設することが困難となる。
一方、正三角形にするとRs値を1.62と大きくすることできるが、円筒状領域との組み合わせで形状的な違和感が大きくなるし、また壜体の容量が小さくなってしまうと云う問題がある。
また、平断面形状が3角形であると、減圧時、周壁の陥没変形に係る変形の自由度が小さく、減圧吸収機能を十分に発揮させることができなくなる、と云う問題もある。
When the flat cross-sectional shape of a regular polygon other than a regular square or a regular pentagon is viewed, for example, the Rs value when the flat cross-sectional shape is a regular octagon is 1.05, and the Rs value when a regular hexagon is 1.08 is 1.08. It is small compared to 1.09, and it becomes difficult to dispose the cylindrical region in a sufficient height range.
On the other hand, if an equilateral triangle is used, the Rs value can be increased to 1.62, but there is a problem that the combination with the cylindrical region increases the sense of discomfort in shape and the capacity of the housing decreases. .
In addition, when the flat cross-sectional shape is a triangle, there is a problem in that the degree of freedom of deformation related to the depressed deformation of the peripheral wall is small during decompression, and the decompression absorption function cannot be fully exhibited.

なお、シュリンクフィルムは円筒状領域を含む円筒状領域近傍だけに外装することもできるし、円筒状領域と傾斜パネル領域を含む胴部の全高さ範囲に亘って外装することも可能である。
前述したように、傾斜パネル領域の平断面形状は角部を円弧状に角取りした正四角形状あるいは五角形状で、平断面でみるとシュリンクフィルムはこの角部を円弧状に角取りした正四角形状あるいは五角形状の形状に沿って略密着状に外装されるので、内容液が凍結する際、傾斜領域の周壁が角部を円弧状に角取りした正四角形状あるいは五角形状からその周長を保持しながら円形状に変形するのに伴って、シュリンクフィルムも変形するため、シュリンクフィルムに引張り応力が作用したりすることもなく、その破断を心配する必要はない。
The shrink film can be covered only in the vicinity of the cylindrical region including the cylindrical region, or can be covered over the entire height range of the body including the cylindrical region and the inclined panel region.
As described above, the flat cross-sectional shape of the inclined panel region corners in a square shape or a positive pentagonal shape with chamfers in an arc shape, when viewed in plan sectional shrink film is positive that chamfering the corners in an arc since the exterior in a substantially close contact shape along the rectangular shape or a positive pentagonal shape, when the content liquid is frozen, the peripheral wall corner portion of the inclined area from the chamfers arcuately square shape or regular pentagonal As the film is deformed into a circular shape while maintaining the circumference, the shrink film is also deformed, so that no tensile stress acts on the shrink film, and there is no need to worry about the breakage.

さらに、角部を円弧状に角取りしたことにより、内容液の凍結時に平断面形状をスムーズに円形状に向かって変形させることができ、体積増加吸収機能をよりスムーズに発揮させることができ、周壁の歪な膨出変形を抑制することができる。
また、内容液の凍結時における周壁の膨張変形に際して、傾斜パネル領域の、変形に対する拘束力の作用が小さい中央高さ位置で変形が大きくなり、傾斜パネル領域がビア樽状になり易く、外観を損なう恐れがあるが、
傾斜パネル領域の周壁が上端及び下端から中央高さ位置に向けて緩やかに縮径する構成とし、中央高さ位置を予め縮径しておくことにより、このような外観の低下を抑制することが可能となる。
Furthermore , by rounding the corners in an arc shape, the flat cross-sectional shape can be smoothly deformed toward the circular shape when the content liquid is frozen, and the volume increase absorption function can be exhibited more smoothly. Distorted bulging deformation of the peripheral wall can be suppressed.
In addition, during expansion deformation of the peripheral wall during freezing of the content liquid, the deformation of the inclined panel region becomes large at the central height position where the action of the restraining force on the deformation is small, and the inclined panel region tends to be a beer barrel shape. There is a risk of damage,
The peripheral wall of the inclined panel region is configured to gradually reduce the diameter from the upper end and the lower end toward the center height position, and by reducing the diameter of the center height position in advance, it is possible to suppress such deterioration in appearance. It becomes possible.

本発明の他の構成は、上記主たる構成において、上半部円筒状領域を、下半部傾斜パネル領域を備える、と云うものである。 Another structure of the present invention, in the above-mentioned main component, the upper halves cylindrical surfaces, in which the lower half portion Ru an inclined panel area, and referred to.

上記構成は、円筒状領域と傾斜パネル領域の配設位置に係るもので、円筒状領域を上半分に配設することにより、円筒状領域と有底短円筒状の底部で傾斜パネル領域を挟むことにより、壜体全体を丸形壜体として違和感のない外観とすることができる。   The above configuration relates to the arrangement positions of the cylindrical region and the inclined panel region. By arranging the cylindrical region in the upper half, the inclined panel region is sandwiched between the cylindrical region and the bottom of the bottomed short cylindrical shape. Thereby, the whole housing can be made into a round-shaped housing and have an uncomfortable appearance.

本発明は、上記した構成となっているので、以下に示す効果を奏する。
すなわち本発明の主たる構成を有する合成樹脂製壜体にあっては、
一方円筒状領域を備えてシュリンクラベルの外装による表示や装飾機能を十分にかつ明確に発揮させる領域をなし、他方傾斜パネル領域を備えて減圧吸収機能と内容液の凍結時における体積増加吸収機能を発揮させる領域をなし、それぞれの領域で機能を分担させようとしたものであり、
円筒状領域では減圧時にも内容液の凍結中にも周壁の平断面形状は変形することなく円形で一定の形状が保持されるため、外装されるシュリンクフィルムに皺やズレの発生がないので、装飾的な美観を十分に発揮させることは勿論、凍結時にも周壁の膨張はなく、シュリンクフィルムが伸び変形することもないのでバーコード等の表示機能を、損なうことなく明確に発揮させることができる。
また、4ケあるいは5ケの傾斜パネルを並列状にした傾斜パネル領域の平断面形状は角部を円弧状に角取りした正四角形状あるいは正五角形状であるが、壜体の軸線に対して一定方向に傾斜して4ケあるいは5ケの傾斜パネルが配設されるため、円筒状部と四角筒状部あるいは五角筒状部を継ぎ足したような違和感を与えることなく、肩部や底部も含めて全体として丸形壜体としての外観を現出させることができる。
Since the present invention has the above-described configuration, the following effects can be obtained.
That is, in the synthetic resin casing having the main configuration of the present invention,
One forms the region to sufficiently and clearly demonstrate the appearance and decorative function by exterior shrink label comprises a cylindrical region, volume increase absorption during freeze vacuum absorption functions and content liquid other is an inclined panel area There is an area where the functions are demonstrated , and each area is supposed to share functions.
In the cylindrical region, since the flat cross-sectional shape of the peripheral wall is maintained in a circular shape without deformation even during decompression or during freezing of the content liquid, there is no wrinkle or misalignment on the outer shrink film, Not only can the decorative aesthetics be fully exhibited, but also the peripheral wall does not expand even when frozen, and the shrink film does not stretch and deform, so the display function of barcodes can be clearly demonstrated without loss. .
In addition, the flat cross-sectional shape of the tilted panel region in which four or five tilted panels are arranged in parallel is a regular quadrangle or a regular pentagon with corners rounded into arcs. Since four or five inclined panels are inclined in a certain direction, the shoulders and the bottom part are also provided without giving a sense of incongruity that the cylindrical part and the square cylindrical part or the pentagonal cylindrical part are added. Including the whole, the appearance as a round frame can be revealed.

そして、減圧時には傾斜パネル領域で、各傾斜パネルが陥没状に変形し、さらに周壁が捻れ変形すると共に縮径変形するため、この陥没状の変形と縮径変形により減圧吸収機能が十分に発揮され、一方、内容液が凍結する際には傾斜パネル領域の周壁の平断面形状が周長を一定に保持しながら角部を円弧状に角取りした正四角形状あるいは五角形状から円形状に変形し、平断面の面積が増加し、十分な体積増加吸収機能が発揮される。
When the pressure is reduced, each inclined panel is deformed into a depressed shape in the inclined panel region, and the peripheral wall is twisted and deformed to reduce the diameter, so that the reduced pressure absorption function is sufficiently exhibited by the depressed shape and the reduced diameter deformation. while the content fluid is deformed into a circular shape from a square shape or a positive pentagonal shape with chamfered corners while maintaining constant the flat cross section circumference of the peripheral wall of the inclined panel area to an arc shape when frozen And the area of a plane cross section increases and sufficient volume increase absorption function is exhibited.

本発明の壜体の一実施例を示す全体正面図である。It is a whole front view which shows one Example of the housing of this invention. 図1の壜体の全体側面図である。It is a whole side view of the housing of FIG. 図1中の(a)はA−A線、(b)はB−B線、(c)はC−C線に沿って示す平断面図である。1A is a plan sectional view taken along line AA, FIG. 1B is line B-B, and FIG. 1C is line C-C. 図1の壜体の底面図である。It is a bottom view of the housing of FIG. 図1中のC−C線に沿った平断面で、(a)は減圧時の、(b)は凍結時の周壁の変形の態様を示す概略説明図である。1. It is a plane cross section along the CC line in FIG. 1, (a) is the time of pressure reduction, (b) is a schematic explanatory drawing which shows the aspect of a deformation | transformation of the surrounding wall at the time of freezing. 従来例の壜体を示す全体正面図である。It is a whole front view which shows the housing of a prior art example. 図6の壜体の、図6中のD−D線に沿って示す平断面図である。FIG. 7 is a plan sectional view of the housing of FIG. 6 taken along line DD in FIG.

以下、本発明の実施形態を、実施例に沿って図面を参照しながら説明する。
図1〜図4は本発明の合成樹脂製壜体の一実施例を示すものであり、図1は全体正面図、図2は側面図、図3は図1中のA−A線、B−B線、C−C線に沿って示す平断面図、図4は底面図である。なお、図3中の一点鎖線で示した円は胴部4の最外周面を示している。
本実施例の壜体1は、PET樹脂製の2軸延伸ブロー成形品で、口筒部2、テーパー筒状の肩部3、円筒状の胴部4、そして底部5から構成され、全高さが215mm、胴部4の最大径が68mm、通称容量が500mlのものである。
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, embodiments of the invention will be described with reference to the accompanying drawings.
1 to 4 show an embodiment of a synthetic resin casing of the present invention. FIG. 1 is an overall front view, FIG. 2 is a side view, and FIG. 3 is a line AA in FIG. FIG. 4 is a bottom sectional view taken along line -B and line CC, and FIG. 4 is a bottom view. In addition, the circle shown with the dashed-dotted line in FIG. 3 has shown the outermost peripheral surface of the trunk | drum 4. FIG.
The casing 1 of the present embodiment is a biaxial stretch blow-molded product made of PET resin, and is composed of a mouth tube portion 2, a tapered tubular shoulder portion 3, a cylindrical body portion 4, and a bottom portion 5, and has an overall height. Is 215 mm, the maximum diameter of the body 4 is 68 mm, and the nominal capacity is 500 ml.

胴部4の形状は大きく上半部と下半部に分けることができ、上半部周壁を円筒状とした円筒状領域Pcを備えており、この円筒状領域Pcには周リブとしての機能を発揮する周溝13が3ケ形成されている。 The shape of the body part 4 can be roughly divided into an upper half part and a lower half part, and the upper half part is provided with a cylindrical region Pc having a cylindrical peripheral wall, and this cylindrical region Pc has a peripheral rib as a peripheral rib. Three circumferential grooves 13 exhibiting the function are formed.

また下半部、壜体1の中心軸Axに対して、左下下がり状に傾斜した4ケの傾斜パネル11を、等中心角度で周方向に並列状にして周壁を構成している傾斜パネル領域Psを備えており、この傾斜パネル領域Psの下方には、周溝7をした短円筒部6を備え、さらに有底短円筒状の底部5に連結している。
そして、円筒状領域Pcと短円筒部6や有底円筒状の底部5で傾斜パネル領域Psを上下から挟むことにより、全体として違和感無く、丸形壜体としての外観としている。
The lower half portion with respect to the center axis Ax of the bottle 1, the inclined panel constituting the inclined panel 11 of 4 Ke inclined to the lower left edge shape, the peripheral wall and in parallel form at an equal center angle in the circumferential direction has a region Ps, below the inclined panel area Ps, includes a short cylindrical portion 6 which have a circumferential groove 7, and further connected to a bottom short cylindrical shaped bottom 5.
The inclined panel region Ps is sandwiched from above and below by the cylindrical region Pc, the short cylindrical portion 6 and the bottomed cylindrical bottom portion 5 so that the appearance as a round casing is obtained without any discomfort.

図3(b)、(c)に示すように傾斜パネル領域Psの平断面形状は正四角形状で、角部12を円弧状に角取りした形状としている。
また、傾斜パネル領域Psの上端及び下端から中央高さ位置に向けて緩やかに縮径する構成としている。
As shown in FIGS. 3B and 3C, the flat cross-sectional shape of the inclined panel region Ps is a regular square shape, and the corner portion 12 is rounded in an arc shape.
Further, the diameter of the inclined panel region Ps is gradually reduced from the upper end and the lower end toward the center height position.

なお、本実施例の壜体1の胴部4の高さ寸法は157mmで、そのうち円筒状領域Pcは45mm、傾斜パネル領域Psは86mmで、円筒状領域Pcおよび傾斜パネル領域Psは、それぞれ胴部4の29%、55%程度の高さ範囲としている。
また図1の正面図で、傾斜パネル領域Psの上端および下端の横幅は62mm、中央高さ位置であるC−C線の高さ位置での横幅は46mmである。
In addition, the height dimension of the trunk | drum 4 of the housing 1 of a present Example is 157 mm of which the cylindrical area | region Pc is 45 mm, the inclination panel area | region Ps is 86 mm, and the cylindrical area | region Pc and the inclination panel area | region Ps are respectively cylinders. The height range of the part 4 is about 29% and 55%.
In the front view of FIG. 1, the horizontal width at the upper end and the lower end of the inclined panel region Ps is 62 mm, and the horizontal width at the height position of the CC line, which is the central height position, is 46 mm.

図1では肩部3の下端から円筒状領域Pcの下端にかけての高さ範囲をシュリンクフィルム21で外装した状態を示しているが、このようにシュリンクフィルム21で外装した本実施例の壜体1に内容液として水を90℃前後の温度で高温充填し、キャップをして密封後、室温まで冷却し、さらに正立状態で−20℃の冷凍庫内に入れて中の水を凍結させる試験を行なった。
なお、20℃でのヘッドスペースが17mlになるように水を充填した。凍結時にはこのヘッドスペースの圧縮により水の体積増加の一部を吸収することが可能であるが、勿論、ヘッドスペースを大きくすると内容液が十分に充填されていない商品になってしまうので、ヘッドスペースによる体積増加吸収機能については自ずとその限界がある。
Although FIG. 1 shows a state in which the height range from the lower end of the shoulder portion 3 to the lower end of the cylindrical region Pc is covered with the shrink film 21, the casing 1 of the present embodiment covered with the shrink film 21 in this way. The test liquid is filled with water at a high temperature of about 90 ° C., sealed with a cap, cooled to room temperature, and placed in an upright freezer at −20 ° C. to freeze the water inside. I did it.
In addition, it filled with water so that the head space in 20 degreeC might be 17 ml. When freezing, it is possible to absorb a part of the volume increase of water by compressing the head space, but of course, if the head space is increased, the product will not be sufficiently filled with the liquid content. Naturally, there is a limit to the volume increase absorption function.

ここで図5は、図1中のC−C線に沿った平断面、すなわち傾斜パネル領域Psの最も縮径した中央高さ位置での平断面での周壁の変形の態様を示す概略説明図で、図5(a)は高温充填後、20℃まで冷却して壜体1が減圧した状態での変形態様を示す。
この図5(a)に示されるように、減圧度が上昇するに従ってまず角部12を起点として傾斜パネル11が図中の白抜き矢印の方向に陥没状に変形し、さらにこの陥没状の変形の進行に伴って、傾斜パネル領域Psで周壁が図中、黒塗り矢印印の方向に捻り変形しその結果、縮径変形する。
そしてこの陥没状の変形と縮径変形により、図中二点鎖線で示される変形態様となり、減圧吸収機能が十分に発揮される。
Here, FIG. 5 is a schematic explanatory view showing a deformation mode of the peripheral wall in a plane section along the line CC in FIG. 1, that is, a plane section at the center height position where the diameter of the inclined panel region Ps is most reduced. FIG. 5A shows a deformation mode in a state where the housing 1 is cooled to 20 ° C. and decompressed after the high temperature filling.
As shown in FIG. 5 (a), as the degree of decompression increases, the inclined panel 11 is first deformed into a depressed shape starting from the corner portion 12 in the direction of the white arrow in the figure, and this depressed shape is further deformed. As the process proceeds, the peripheral wall is twisted and deformed in the direction of the black arrow in the drawing in the inclined panel region Ps, and as a result, the diameter is reduced.
And by this depression-like deformation and reduced diameter deformation, it becomes a deformation mode shown by a two-dot chain line in the figure, and the reduced pressure absorption function is sufficiently exhibited.

また、円筒状領域Pcでは、周溝13の作用効果も相俟って減圧による周壁の局部的な陥没変形はなく、円筒状の形状が保持され、シュリンクフィルム21での伸び変形の発生はなく、また皺やズレの発生も見られなかった。   Further, in the cylindrical region Pc, there is no local depression deformation of the peripheral wall due to the reduced pressure due to the action and effect of the peripheral groove 13, the cylindrical shape is maintained, and no elongation deformation occurs in the shrink film 21. Also, no wrinkles or deviations were observed.

一方、図5(b)は水が凍結した際の体積増加に伴う変形態様を示す概略説明図である。図中、元の平断面形状である正四角形と同じ周長を有する円を二点鎖線で示したが、凍結による体積増加に伴って、図中白抜き矢印に示したように正四角形状の平断面形状が、二点鎖線で示した円に向かうように膨出状に変形する。
この際、本実施例では正四角形の角部12を、二点鎖線で示した円の半径に近い曲率半径の円弧で角取りした形状とした点も相俟って、正四角形から円形に向かって周壁をスムーズに変形させることができた。
On the other hand, FIG.5 (b) is a schematic explanatory drawing which shows the deformation | transformation aspect accompanying the volume increase when water freezes. In the figure, a circle having the same circumference as the regular square, which is the original flat cross-sectional shape, is indicated by a two-dot chain line, but as the volume increases due to freezing, the regular square shape as indicated by the white arrow in the figure. The flat cross-sectional shape is deformed into a bulging shape so as to go to a circle indicated by a two-dot chain line.
At this time, in the present embodiment, the square portion 12 of the regular square is rounded from the regular square to the circle in combination with a shape obtained by chamfering with an arc having a radius of curvature close to the radius of the circle shown by the two-dot chain line. As a result, the peripheral wall could be smoothly deformed.

また、本実施例の壜体では、傾斜パネル領域Psの上端および下端から周壁の変形がもっとも進行し易い中央高さ位置に向かって緩やかに縮径する構成としており、膨出変形を目立たないようにすることが出来ると共に、変形を中央高さ位置から上端および下端に向けてスムーズに進行させることができた。
そして、傾斜パネル領域Psを変形のない円筒状領域Pcと短円筒部6や有底短円筒状の底部5で上下から挟むことにより、凍結時における膨出変形を目立たなくすることができ、凍結に伴う膨出変形により商品性を損なうこともなかった。
Further, in the casing of the present embodiment, the diameter is gradually reduced from the upper end and the lower end of the inclined panel region Ps toward the central height position where the deformation of the peripheral wall is most likely to proceed, so that the bulging deformation is not noticeable. In addition, the deformation could proceed smoothly from the central height position toward the upper and lower ends.
Further, by sandwiching the inclined panel region Ps from above and below between the cylindrical region Pc without deformation and the short cylindrical part 6 or the bottomed short cylindrical bottom part 5, the bulging deformation at the time of freezing can be made inconspicuous. The merchantability was not impaired by the bulging deformation associated with.

ここで、前述したように正四角形のRs値は1.27であり、図5(b)中、実線で示される正四角形はその周長を保持しながら、二点鎖線で示される円形にまで変形することができ、その平断面の面積は最大で1.27倍にまで大きくなる。従って、傾斜パネル領域Psの高さ寸法が胴部4の55%程度であることや、傾斜パネル領域Psの上端部や下端部では傾斜パネル11の自由な変形が拘束されること等を考慮しても、凍結に伴う水の体積増加(1.09倍)を十分に吸収することができる。   Here, as described above, the Rs value of the regular square is 1.27. In FIG. 5B, the regular square indicated by the solid line has a circular shape indicated by the two-dot chain line while maintaining the circumference. The area of the flat cross section can be increased up to 1.27 times at the maximum. Therefore, considering that the height dimension of the inclined panel region Ps is about 55% of that of the body portion 4, and that the free deformation of the inclined panel 11 is restricted at the upper and lower ends of the inclined panel region Ps. However, the volume increase (1.09 times) of water accompanying freezing can be sufficiently absorbed.

なお、上記実施例では傾斜領域Psでの平断面形状を正四角形状としたが、正五角形の場合も前述したようにそのRs値は1.16と十分大きな値を有しているので、5ケの傾斜パネル11を、等中心角度で周方向に並列状にして周壁を構成してその平断面形状を正五角形状とすることもできる
In the above-described embodiment, the flat cross-sectional shape in the inclined region Ps is a regular tetragonal shape. However, even in the case of a regular pentagon, as described above, the Rs value has a sufficiently large value of 1.16. It is also possible to form the peripheral wall by arranging the inclined panels 11 in parallel in the circumferential direction at equal central angles so that the flat cross-sectional shape is a regular pentagon .

因みに、6ケの傾斜パネルで傾斜パネル領域Psの周壁を形成する場合には、その平断面形状が正6角形状となるが、正6角形の場合そのRs値は1.08で、胴部4の全高さ範囲を傾斜パネル領域Psとし、ヘッドスペースでの吸収機能を考慮すると、なんとか凍結による体積増加に見合う変形を吸収することは可能ではあるが、本発明の壜体のようにシュリンクフィルム21による装飾機能や表示機能を十分に発揮させるために、円筒状領域Pcを配設する場合は、その体積増加吸収機能は不十分になってしまう。   Incidentally, when the peripheral wall of the tilted panel region Ps is formed with six tilted panels, the flat cross-sectional shape is a regular hexagon, but in the case of a regular hexagon, the Rs value is 1.08, In consideration of the absorption function in the head space with the entire height range of 4 as the inclined panel region Ps, it is possible to somehow absorb the deformation corresponding to the increase in volume due to freezing, but the shrink film like the casing of the present invention. When the cylindrical region Pc is disposed in order to fully exhibit the decoration function and display function by the 21, the volume increase absorption function becomes insufficient.

以上、実施例に沿って本発明の合成樹脂製壜体の実施の形態、およびその作用効果を説明したが、本発明は上記実施例に限定されるものではない。
たとえば、本発明の壜体はPET樹脂製の2軸延伸ブロー成形品に限定されることなく、従来から一般的に使用されているポロプロピレン樹脂製等の他の合成樹脂製のものとすることができる。
また、本実施例では円筒状領域Pc近傍だけをシュリンクフィルムで外装する例を示したが、傾斜パネル領域Psも含めて胴部の全高さを外装する構成とすることもできる。
この場合もシュリンクフィルムでの伸び変形の発生や、皺やズレの発生に大きく影響されるバーコード等の表示は円筒状領域Pcに配設すればよい。
As mentioned above, although embodiment of the synthetic resin casing of this invention and its effect were demonstrated along the Example, this invention is not limited to the said Example.
For example, the casing of the present invention is not limited to a biaxial stretch blow-molded product made of PET resin, but is made of another synthetic resin such as a commonly used polypropylene resin. Can do.
Moreover, although the example which coat | covers only the cylindrical area | region Pc vicinity with a shrink film was shown in the present Example, it can also be set as the structure which coat | covers the whole height of a trunk | drum also including the inclination panel area | region Ps.
In this case as well, the display of barcodes and the like that are greatly affected by the occurrence of stretch deformation in the shrink film and the occurrence of wrinkles and deviations may be arranged in the cylindrical region Pc.

また、胴部の全高さに対する、円筒状領域Pcあるいは傾斜パネル領域Psの高さの割合は、シュリンクフィルムの外装範囲、要求される減圧吸収機能や体積増加吸収機能、壜体の剛性や座屈強度、そして外観デザイン等を考慮し、適宜選択することができる。
また、本実施例とは逆に上半部傾斜パネル領域Psを、下半部円筒状領域Pcを備えた胴部とすることも可能である。
In addition, the ratio of the height of the cylindrical region Pc or the inclined panel region Ps to the total height of the body part is the shrinkage of the shrink film, the required vacuum absorption function, the volume increase absorption function, the rigidity and buckling of the housing. It can be selected as appropriate in consideration of strength, appearance design, and the like.
Contrary to the present embodiment, the upper half can be a tilted panel region Ps, and the lower half can be a body having a cylindrical region Pc.

以上説明したように本発明の合成樹脂製壜体は、水を主成分とした内容液の凍結において、体積の増加を十分吸収し、シュリンクフィルムを外装した場合でもその装飾や表示機能を高品位かつ十分に発揮させることができるものであり、内容液を凍結して使用する用途での幅広い使用が期待される。
As described above, the synthetic resin casing of the present invention sufficiently absorbs the increase in volume in freezing the content liquid mainly composed of water, and has a high-quality decoration and display function even when a shrink film is packaged. In addition, it can be sufficiently exhibited, and is expected to be used in a wide range of applications in which the content liquid is frozen and used.

1、101;壜体
2、102;口筒部
3、103;肩部
4、104;胴部
5、105;底部
6 ;短円筒部
7、107;周溝
11;傾斜パネル
12;角部
13;周溝
21;シュリンクフィルム
111;減圧吸収パネル
Ax;中心軸
Pc;円筒領域
Ps;傾斜領域
DESCRIPTION OF SYMBOLS 1,101; Housing 2,102; Mouth tube part 3,103; Shoulder part 4,104;
5, 105; bottom 6; short cylindrical portion 7, 107; peripheral groove 11; inclined panel 12; corner 13; peripheral groove 21; shrink film 111; reduced pressure absorption panel Ax;

Claims (2)

口筒部(2)、筒状の胴部(4)、そして底部(5)を有する合成樹脂製壜体であって、前記胴部(4)上半部と下半部とを有し、一方周壁を円筒状とした円筒状領域(Pc)を備え、他方前記壜体の中心軸(Ax)に対して一定方向に傾斜した4ケあるいは5ケの傾斜パネル(11)を並列状にして周壁の平断面形状を角部を円弧状に角取りした正四角形状あるいは正五角形状とした傾斜パネル領域(Ps)を備え、該傾斜パネル領域(Ps)の周壁が上端及び下端から中央高さ位置に向けて緩やかに縮径する構成としたことを特徴とする水を主成分とした内容液を凍結させて使用する用途向けの合成樹脂製壜体。 Mouth tube section (2), a tubular body portion (4) and bottom (5) A synthetic resin bottle body with said body portion (4) has an upper half portion and the lower half section , one with a cylindrical area in which the peripheral wall and cylindrical (Pc), the other is the central axis of the bottle body inclined in a certain direction with respect to (Ax) 4 Ke or 5 Quai inclined panel (11) parallel Jo to an inclined panel region corners a flat cross-sectional shape of the peripheral wall has an arc shape in the corner up to the square-shaped or pentagon-shaped (Ps), the peripheral wall of the inclined panel area (Ps) from the upper and lower ends A synthetic resin casing for use in which a liquid containing water as a main component is used by freezing, characterized in that the diameter gradually decreases toward the center height. 上半部円筒状領域(Pc)を、下半部傾斜パネル領域(Ps)を備えた請求項1記載の合成樹脂製壜体。 The upper halves cylindrical surfaces (Pc), synthetic resin bottle body according to claim 1, wherein the lower half portion has an inclined panel area (Ps).
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